idahwati sarudin, mohamad haniff junos, nurul shazana abdul hamid, mardina abdullah, logesh kumar selvakumar.  (2025).  aplikasi pendekatan hibrid dalam pengesanan struktur gelembung plasma khatulistiwa berdasarkan roti keogram.  - 9th international conference on space science and communication (iconspace 2025).  . 

idahwati sarudin, nurul shazana abdul hamid, mardina abdullah, suhaila m. buhari.  (2025).  new insights on the characteristics of equatorial plasma bubbles: a case study.  - .  211 - 217. 

idahwati sarudin, nurul shazana abdul hamid, mardina abdullah, suhaila m. buhari.  (2025).  new insights on the characteristics of equatorial plasma bubbles: a case study.  - .  211 - 217. 

nurumira ashikin, wai-leong teh, mardina abdullah.  (2025).  magnetic reconnection characteristics and their influence on the reconnection rate in the earth’s magnetotail.  - jurnal kejuruteraan.  3219 - 3226. 

siti aminah bahari, suhaila m buhari, mardina abdullah dan nurul shazana abdul hamid.  (2025).  pemetaan roti bagi mengesan impak letusan gunung berapi hunga tonga-hunga ha’apai ke atas lapisan ionosfera di malaysia.  - 9th international conference on space science and communication (iconspace 2025).  . 

siti aminah bahari, mardina abdullah, suhaila m buhari .  (2025).  the impact of hunga tonga-hunga ha’apai volcanic eruption on the ionosphere over malaysia.  - european space weather week.  . 

norsuzlin mohd sahar, noridawaty mat daud, mardina abdullah, siti aminah bahari, roslinda rosli , nurul shazana abdul hamid, badariah bais, gan kok beng, sabirin abdullah & lilia halim.  (2025).  ukm sidtm : pemerkasaan pembelajaran sains angkasa.  - .  140 - 161. 

kasyful qaedi, mardina abdullah, khairul adib yusof, masashi hayakawa, nur fatin irdina zulhamidi.  (2025).  multi-class classifcation automated machine learning for predicting earthquakes using global geomagnetic field data.  - natural hazards.  1 - 14. 

longjiang li, kefei zhang, hong zhang, suqin wu minghao zhang, dongsheng zhao, xiaoming wang and mardina abdullah.  (2025).  a gru-based model using gnss-pwv and meteorological data for forecasting rainfalls.  - ieee journal of selected topics in applied earth observations and remote sensing.  18316 - 18329. 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid, khairul adib yusof, siti aminah bahari, septi perwitasari.  (2025).  a comprehensive study of geomagnetic and tec disturbances in relation to m> 5.0 earthquakes.  - advances in space research.  2837 - 2849. 

d. j. ang, s. m. buhari, m. abdullah and s. a. bahari.  (2025).  the effects of solar flares and geomagnetic storm on the upper and lower ionosphere across the malay archipelago between 8th and 15th may 2024.  - journal of geophysical research: space physics.  1 - 10. 

zulhamidi, nur fatin irdina; abdullah, mardina; hamid, nurul shazana abdul; yusof, khairul adib.  (2025).  monitoring surface deformation before the m7.0 kumamoto and m6.6 chitose earthquakes for precursor.  - e3s web of conferences.  1 - 8. 

mardina abdullah.  (2025).  ramal petanda gempa bumi dengan teknologi di angkasa.  - tv sarawak.  . 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid, khairul adib yusof, siti aminah bahari, akimasa yoshikawa.  (2025).  precursor signature of the 2025 myanmar earthquake m7.7 observed in geomagnetic and tec variations in malaysia.  - the 8th asia-oceania space weather alliance.  . 

suryadi suryadi, mariyam jamilah homam, rohaida mat akir, mardina abdullah.  (2024).  disturbance detection due to lightning at ionospheric d-region over malaysia.  - international journal of advances in applied sciences.  821 - 829. 

sulaiman ali mohammmad, mardina abdullah, siti aminah bahari, mohd riduan ahmad, sang-jong park.  (2024).  variation of vertical total electron content due to lightning occurrences in tropical and polar region.  - 10th malaysian international seminar on antarctica (misa10).  . 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid, khairul adib yusof.  (2024).  monitoring surface deformation before the m7.0 kumamoto and m6.6 chitose earthquakes for precursor.  - 6th international conference on science and technology applications in climate change (staclim 2024).  . 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid, khairul adib yusof, siti aminah bahari, septi perwitasari.  (2024).  earthquake precursor identification from simultaneous geomagnetic and ionospheric data variations.  - the 7th aoswa (asia-oceania space weather alliance) workshop.  . 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid, khairul adib yusof.  (2024).  monitoring surface deformation and geomagnetic disturbances to identify earthquake precursor.  - ieee workshop on geoscience and remote sensing 2024 (iwgrs2024).  . 

rasheduzzaman sifat, mohammad rashed iqbal faruque, tayaallen ramachandran, mardina abdullah, mohammad tariqul islam, k s al mugren.  (2024).  srr inspired inversion symmetry shaped left handed metamaterial with a high effective medium ratio for asr and wlan applications.  - heliyon.  1-17. 

mohammad rashed iqbal faruque, air mohammad siddiky, rasheduzzaman sifat, mardina abdullah, mohammad tariqul islam, sabirin abdullah.  (2024).  crossed arm based quad t shaped metallic arm with a circular loop resonator with wider bandwidth for high frequency based wireless communication.  - applied physics a-materials science & processing.  1-14. 

rasheduzzaman sifat, mohammad rashed iqbal faruque, tayaallen ramachandran, mardina abdullah, mohammad tariqul islam, k s al-mugren.  (2024).  development of double-layer metamaterial with high effective medium ratio values for s and c band applications.  - helioyon.  1-17. 

brelveenraj kaur rajwant singh, aiffah mohd ali, siti aminah bahari, mardina abdullah.  (2024).  a review on gbas: ionospheric effects at low-latitude regions.  - proceedings of the 8thinternational conferenceon space science and communication.  337-346. 

sulaiman ali mohammmad, mardina abdullah, siti aminah bahari, mohd riduan ahmad.  (2024).  vertical total electron content variation due to lightning activities near malaysia.  - proceedings of the 8th international conference on space science and communication.  219-225. 

khairul adib yusof, syamsiah mashohor, mardina abdullah, mohd amiruddin abd rahman, nurul shazana abdul hamid, kasyful qaedi, khamirul amin matori, masashi hayakawa.  (2024).  earthquake prediction model based on geomagnetic field data using automated machine learning.  - ieee geoscience and remote sensing letters.  1-5. 

imran md jelas, mohd asyraf zulkifley, mardina abdullah, martin spraggon.  (2024).  deforestation detection using deep learning-based semantic segmentation techniques: a systematic review.  - frontiers in forests and global change.  1-24. 

navaniswaran tharumen, mahendran sithamparam, nirmell satthiyasilan, siti aminah bahari, puvaneswaran chelvanathan, jalifah latip, afifuddin husairi mat jusoh hussaina, mardina abdullah & kuhan chandru.  (2024).  peranan matahari muda yang malap dalam kimia pra-biotik: dari perspektif kimia tentang polimerisasi pra-biotik.  - jurnal kejuruteraan.  1311 - 1321. 

raja adibah raja halim shah, nurul shazana abdul hamid, mardina abdullah, adlyka annuar, idahwati sarudin, zahira mohd radzi, akimasa yoshikawa.  (2024).  a comprehensive classification and analysis of geomagnetic storms over solar cycle 24.  - research in astronomy and astrophysics.  1 - 10. 

muhammad haziq mohammad sabri, mohd riduan ahmad, yuji takayanagi, shamsul ammar shamsul baharin, takeshi morimoto, zen-ichiro kawasaki, mohd zafri baharuddin, mohamad zoinol abidin abd. aziz, mardina abdullah, vernon cooray.  (2024).  temporal characteristics of positive cloud-to-ground flashes from tropical thunderstorms.  - atmospheric research.  1 - 9. 

kasyful qaedi, mardina abdullah, khairul adib yusof and masashi hayakawa.  (2024).  feasibility of principal component analysis for multi-class earthquake prediction machine learning model utilizing geomagnetic field data.  - geosciences (switzerland).  1 - 11. 

nasser said saif al hashimi, aiffah mohd ali, siti aminah bahari, mardina abdullah.  (2024).  ionospheric scintillation and solar activity relation in east malaysia during solar maximum 2014.  - advances in space research.  3504 - 3514. 

imran md jelas; mohd asyraf zulkifley; mardina abdullah.  (2024).  forest segmentation: spatio-temporal ground truth labelling via assisted annotation.  - proceedings of the 2024 ieee 8th international conference on signal and image processing applications (icsipa).  1 - 5. 

raja adibah raja halim shah, nurul shazana abdul hamid, mardina abdullah, adlyka annuar, farahana kamarudin, idahwati sarudin.  (2024).  an occurrence rate analysis of geomagnetic storms and coronal mass ejection over the solar cycle-24.  - jurnal fizik malaysia.  10039 - 10045. 

idahwati sarudin, nurul shazana abdul hamid, mardina abdullah, suhaila m buhari, yuichi otsuka, septi perwitasari, clara yatini.  (2024).  permulaan gelembung plasma khatulistiwa semasa angin neutral kuat dan lemah di asia tenggara.  - jurnal kejuruteraan.  1281 - 1289. 

khairul adib yusof, mardina abdullah, nurul shazana abdul hamid, suaidi ahadi.  (2024).  pengesanan denyutan pi2 hampir masa nyata berdasarkan model pembelajaran mesin terautomatik.  - jurnal kejuruteraan.  1301 - 1310. 

raja adibah raja halim shah, nurul shazana abdul hamid, mardina abdullah, adlyka annuar, idahwati sarudin, zahira mohd radzi, akimasa yoshikawa.  (2024).  a case study on magnetic signature of ionospheric disturbance dynamo during an intense geomagnetic storm on 6 august 2011.  - proceedings of the 8th international conference on space science and communication.  227 - 233. 

r. a. r. h. shah, n. s. a. hamid, m. abdullah, a. annuar, i. sarudin.  (2024).  temporal variation of the ionospheric disturbance dynamo in response to geomagnetic storms event based on observation data in malaysia.  - the 7th aoswa (asia-oceania space weather alliance) workshop.  . 

n. s. a. hamid, r. a. r. h. shah, m. abdullah, a. annuar, i. sarudin, z. m. radzi.  (2024).  in-depth analysis and categorization of geomagnetic storms throughout solar cycle 24.  - the 7th aoswa (asia-oceania space weather alliance) workshop.  . 

ao afolayan, js mandeep, m abdullah, n s a hamid, t yokoyama.  (2023).  effect of the seed perturbation amplitude on the equatorial spread f initiation during solar minimum.  - advances in space research.  255-267. 

mohamad zulfahmi bin mohamad izham, mardina binti abdullah, siti aminah binti bahari, gan kok beng & sabirin bin abdullah.  (2023).  development of graphical interface software for solar flare monitoring system.  - jurnal kejuruteraan.  257-264. 

nurul shazana binti abdul hamid;mardina bt. abdullah;siti aminah binti bahari.  (2023).  causality between equatorial plasma bubbles phenomenon and counter electrojet current over different solar activity levels.  - .  . 

ungku azmi iskandar ungku chulan, mardina abdullah, nor fadzillah abdullah, abdullah ramli.  (2023).  machine learning of irreducible error floor in the space-time trellis code.  - international journal of intelligent engineering informatics.  290-312. 

muhammad khairul adib muhammad yusof, nurul shazana abdul hamid, mardina abdullah, siti aminah bahari.  (2023).  petanda gempa bumi siap siaga dengan teknologi sains angkasa.  - majalah impak kluster tse bil1/2023.  18-19. 

khairul afifi nasuddin, mardina abdullah, nurul shazana abdul hamid.  (2023).  correlation analysis of geomagnetic parameter with south atlantic anomaly region.  - jurnal kejuruteraan.  237-246. 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid, khairul adib yusof, siti aminah bahari.  (2023).  investigating short-term earthquake precursors detection through monitoring of total electron content variation in ionosphere.  - frontiers in astronomy and space sciences.  1-7. 

s a bahari, s r s husin, m abdullah, e ghamry.  (2023).  preliminary study of topside ionospheric variations using swarm satellites over the malaysia region.  - 2022 international conference on science & technology applications in climate change (staclim 2022).  1-8. 

k.a. yusof, m. abdullah, n. s. abdul hamid.  (2023).  geomagnetic signal processing system for pre-earthquake anomaly detection.  - .  1-15. 

s.a. bello, m. abdullah, n.s.a. hamid, k.a. yusuf, a. yoshikawa, a. fujimoto.  (2023).  robust least square modelling for selected daytime ionospheric parameters using geomagnetic observations at low latitudes.  - advances in space research.  1615-1633. 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid, khairul adib yusof.  (2023).  comparative analysis of variants of geomagnetic diurnal variation ratio method for earthquake precursor detection.  - jurnal kejuruteraan.  881-888. 

sadia mostafa, mardina abdullah, siti aminah bahari, mohammad tariqul islam.  (2023).  analysis of the regional ionospheric disturbance index during geomagnetic storm in 2012.  - ieee access.  94742-94752. 

imran md jelas; mohd asyraf zulkifley; mardina abdullah.  (2023).  automated ground truth annotation for forest and non-forest classification in satellite remote sensing images.  - proceedings of 2023 4th international conference on artificial intelligence and data sciences (aidas).  331-336. 

mardina bt. abdullah;lilia bt. halim;badariah binti bais;mohd azlan shah bin jaafar;noridawaty binti mat daud;roslinda binti rosli;siti aminah binti bahari;gan kok beng;nurul shazana binti abdul hamid;nurul hajijah binti hair;sabirin bin abdullah;norsuzli.  (2023).  pengembangan profesionalisma guru dalam sains angkasa melalui aktiviti pengalamian sistem ukm-sidπ™.  - .  . 

mardina bt. abdullah;mohd azlan shah bin jaafar;siti aminah binti bahari;mohd shahrul bin mohd nadzir.  (2023).  characteristic of lighting flashes over antarctica peninsular and it’s respond to the upper atmosphere.  - .  . 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid , khairul adib yusof.  (2023).  monitoring geomagnetic disturbances and surface deformation for earthquake precursor detection.  - international geoscience and remote sensing symposium (igarss).  1. 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid & khairul adib yusof.  (2023).  detecting possible earthquake precursors through geomagnetic and ionospheric total electron content disturbances.  - the 6th asia-oceania space weather alliance workshop (aoswa).  1. 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid, khairul adib yusof.  (2023).  analysis of geomagnetic and ionospheric total electron content disturbances for earthquake precursor detection.  - ieee workshop on geoscience and remote sensing (iwgrs).  1-10. 

sulaiman ali mohammmad, mardina abdullah, siti aminah bahari , mohd riduan ahmad.  (2023).  vertical total electron content variation due to lightning activities near malaysia.  - 8th international conference on space science and communication (iconspace 2023).  1-11. 

khairul adib yusof, mardina abdullah, nurul shazana abdul hamid, suaidi ahadi, essam ghamry.  (2022).  statistical global investigation of pre-earthquake anomalous geomagnetic diurnal variation using superposed epoch analysis.  - ieee transactions on geoscience and remote sensing.  1-13. 

idahwati sarudin, nurul shazana abdul hamid, mardina abdullah, fatin nur syakirah mohd rusli, yuichi otsuka, kazuo shiokawa, clara yatini, siramas komonjinda, ekkarach somboon.  (2022).  variations of zonal wind velocity in the thermosphere observed at southeast asian sector during quiet and active geomagnetic days.  - jurnal fizik malaysia.  10025-10035. 

mardina abdullah.  (2022).  cuaca angkasa kesan kepada langit dan bumi.  - .  101. 

sulaiman ali mohammad, mohd riduan ahmad, mardina abdullah, park sangjong, shamsul ammar shamsul baharin, norbayah yusop, gaopeng lu and vernon cooray.  (2022).  characteristics of lightning electromagnetic fields produced by antarctica storms.  - atmosphere.  1-17. 

rasheduzzaman sifat,mohammad rashed iqbal faruque, md bellal hossain, mardina abdullah, mohammad tariqul islam,mayeen uddin khandaker,nissren tamam, abdelmoneim sulieman.  (2022).  development ofdouble c shaped left-handed metamaterial for dual band wifi and satellite communication application with high effective medium radio and wide bandwidth.  - crystals.  1-20. 

nur izzati mohd rosli, nurul shazana abdul hamid, aimi azizan, idahwati sarudin, mardina abdullah, kornyanat hozumi.  (2022).  epb occurrence in southeast asian sector based on solar activity level and season over solar cycle 24.  - jurnal fizik malaysia.  10151-10156. 

nur izzati mohd rosli, nurul shazana abdul hamid, mardina abdullah, khairul adib yusof, akimasa yoshikawa, teiji uozumi, babatunde rabiu.  (2022).  the variation of counter-electrojet current at the southeast asian sector during different solar activity levels.  - applied sciences.  1-11. 

nurul shazana binti abdul hamid;mardina bt. abdullah;wan mohd aimran bin wan mohd kamil.  (2022).  identification of stratospheric quasi biennal oscillation impact on equatorial electrojet current .  - .  . 

rohaida mat akir, mardina abdullah, kalaivani a/p chellapan, siti aminah bahari.  (2022).  meramal ionosfera dengan pendekatan rangkaian neural.  - .  127. 

sadia mostofa, mardina abdullah, mohammad tariqul islam, siti aminah bahari, mohammad badal ahmmed.  (2022).  variations of total electron content during quiet and disturbed geomagnetic conditions over malaysia.  - 2022 ieee 6th international symposium on telecommunication technologies (istt).  97-101. 

sadia mostofa, mardina abdullah, mohammad tariqul islam, siti aminah bahari, mohammad badal ahmmed.  (2022).  a gps tec-based ionospheric-m index over malaysia.  - 2022 ieee 20th student conference on research and development (scored).  185-189. 

mardina abdullah, roslinda rosli, siti aminah bahari, noridawaty mat daud, nor syaidah bahri, sabirin abdullah, badariah bais, gan kok beng, lilia halim, nurul shazana abdul hamid.  (2022).  modul, kit aktiviti dan program pemantauan nyalaan suria bagi pengajaran dan pembelajaran sains angkasa di sekolah menengah.  - .  112-124. 

khairul adib yusof, mardina abdullah, nurul shazana abdul hamid, suaidi ahadi, akimasa yoshikawa.  (2021).  correlations between earthquake properties and characteristics of possible ulf geomagnetic precursor over multiple earthquakes.  - universe.  1-17. 

wan nur izzaty ismail, nurul shazana abdul hamid, mardina abdullah, akimasa yoshikawa, teiji uozumi, zahira mohd radzi.  (2021).  comparison of eej longitudinal variation from satellite and ground measurements over different solar activity levels.  - universe.  1-13. 

montadar abas taher, mandeep singh jit singh, mardina abdullah.  (2021).  wireless communication system : power reduction energy consumption.  - .  139. 

mardina bt. abdullah;lilia bt. halim;badariah binti bais;rosadah binti abd majid;mohd azlan shah bin jaafar;noridawaty binti mat daud;roslinda binti rosli;gan kok beng;nurul shazana binti abdul hamid;nurul hajijah binti hair;sabirin bin abdullah.  (2021).  program pemantauan suar matahari menggunakan ukm-sidÏ€.  - .  . 

teh wai leong;mardina bt. abdullah.  (2021).  exploring magnetic reconnection in space.  - .  . 

teh wai leong;mardina bt. abdullah;sabirin bin abdullah.  (2021).  magnetic classification and structure of sunspots in the active regions associated with solar flares.  - .  . 

idahwati sarudin, nurul shazana abdul hamid, mardina abdullah, suhaila m buhari, kazuo shiokawa, yuichi otsuka, kornyanat hozumi, punyawi jamjareegulgarn.  (2021).  influence of zonal wind velocity variation on equatorial plasma bubble occurrences over southeast asia.  - journal of geophysical research: space physics.  1-10. 

sabirin bin abdullah;mardina bt. abdullah;mohammad rashed iqbal faruque;teh wai leong.  (2021).  metamaterial based invisibility cloak for electromagnetic radiation control in space applications.  - .  . 

n i m rosli, n s a hamid, m abdullah, a yoshikawa.  (2021).  defining different type of cej currents based on ground-based geomagnetic data record at langkawi station, malaysia.  - 2nd international conference on space weather and satellite application (icessat) 2020.  1-5. 

mohammad rashed iqbal faruque;mardina bt. abdullah;norbahiah binti misran;mohammad tariqul islam;sabirin bin abdullah.  (2021).  development of open mesh meta-atom mirror for solar radiation absorption.  - .  . 

nouf abd elmunim, mardina abdullah, siti aminah bahari.  (2021).  evaluating the performance of iri-2016 using gps-tec measurements over the equatorial region.  - atmosphere.  1-17. 

n.a. elmunim, m. abdullah.  (2021).  ionospheric delay investigation and forecasting.  - springerbriefs in applied sciences and t.  100. 

mardina abdullah.  (2021).  cakna petanda semula jadi, ramal gempa bumi lebih awal.  - berita harian.  1. 

bello saeed abioye, mardina abdullah, nurul shazana abdul hamid.  (2021).  characteristic of ionospheric parameters over equator region.  - .  148. 

mardina bt. abdullah;alina marie binti hasbi;mohd azlan shah bin jaafar;siti aminah binti bahari;teh wai leong.  (2021).  development of malaysia ionosperic tec model using spherical harmonic analysis.  - .  . 

rafidah abd malik, mardina abdullah, sabirin abdullah.  (2021).  komunikasi hf: hubungan ionosfera dan matahari.  - .  193. 

sarani zakaria, andanastuti muchtar, aisyah abdul rahman, wan hanna melini wan mohtar, babul airianah othman, norazlin hassim, abdul munir abd. murad,.  (2021).  peraturan-peraturan universiti kebangsaan malaysia (pengajian siswazah) 2021.  - .  57. 

khairul adib yusof, mardina abdullah, nurul shazana abdul hamid, suaidi ahadi, essam ghamry.  (2021).  statistical significance of geomagnetic diurnal variation anomalies prior to worldwide earthquake.  - geografia: malaysian journal of society & space.  366-377. 

khairul adib yusof, mardina abdullah, nurul shazana abdul hamid.  (2021).  isyarat geomagnet untuk peramalan gempa bumi.  - .  135. 

s a mohammad, m r ahmad, m abdullah, s a s baharin, s j park, v cooray.  (2021).  azimuth and elevation factors correction for single station lightning electromagnetic field sensor.  - geografia malaysian journal of society and space.  378-392. 

roslinda rosli, mardina abdullah, nur choiro siregar, siti aminah bahari, nurul shazana abdul hamid, sabirin abdullah, gan kok beng, lilia halim, noridawaty mat daud, badariah bais.  (2021).  raising students' awareness and achievement in space science with solar flare monitoring project-based approach.  - 2021 7th international conference on space science and communication.  1-4. 

sarani zakaria, aisyah abdul rahman, jaharah a. ghani, zarina abdul latiff, mardina abdullah, abdul munir abd. murad, wan hanna melini wan mohtar, ermy azziaty rozali, mohd hizam hanafiah, kartini aboo talib, mohd aladib samuri, rozainee khairudin, (9).  (2021).  guidelines for conducting oral examination for dissertation/thesis.  - .  1-46. 

saeed abioye bello, nurul shazana abdul hamid, mardina abdullah, akimasa yoshikawa, kornyanat hozumi, takuya tsugawa.  (2021).  equatorial electrojet and electron density over southeast asian region during moderate solar activity condition.  - indian journal of radio and space physics.  125-131. 

siti aminah bahari, nurul shazana abdul hamid, mardina abdullah, sabirin abdullah.  (2021).  examination of solar flare monitoring using a low cost vlf receiver.  - 7th international conference on space science and communication (iconspace).  5-10. 

roslinda rosli, mardina abdullah, nur choiro siregar, siti aminah bahari, nurul shazana abdul hamid, sabirin abdullah, gan kok beng, lilia halim, noridawaty mat daud, badariah bais.  (2021).  raising students' awareness and achievement in space science with solar flare monitoring project- based approach.  - 7th international conference on space science and communication (iconspace).  290-293. 

nur izzati mohd rosli, nurul shazana abdul hamid, mardina abdullah, suhaila m buhari, idahwati sarudin.  (2021).  seasonal variation of post-sunset and post-midnight equatorial plasma bubble in malaysia during moderate solar activity level.  - 7th international conference on space science and communication (iconspace 2021).  294-297. 

nur fatin irdina zulhamidi, mardina abdullah, nurul shazana abdul hamid, khairul adib yusof.  (2021).  possible earthquake precursors observed in geomagnetic variations in the east coast of honshu, japan.  - 7th international conference on space science and communication (iconspace 2021).  71-76. 

wan nur izzaty ismail, nurul shazana abdul hamid, mardina abdullah.  (2021).  impact of the quasi biennial oscillation on the eej intensity.  - 7th international conference on space science and communication (iconspace 2021).  11-15. 

n.a. elmunim, m. abdullah, s.a. bahari.  (2021).  comparison of ionospheric vtec predictions using the holt-winter and iri-2016 model in equatorial region.  - 34th general assembly and scientic symposium of the international union of radio science, ursi gass 2021.  1-4. 

nurliyana abdul rahim, mohd hezri mokhtar, muhammad raziq mohd rosli, mardina abdullah, siti aminah bahari.  (2021).  the effects of x-class solar flare monitored by ground-based gps receivers.  - 2021 7th international conference on space science and communication (iconspace).  211-214. 

rohaida mat akir, kalaivani chellappan, noraide md yusop, mardina abdullah, mariyam jamilah homam.  (2021).  prediction of tec at low latitudes station using neural network model.  - 2021 7th international conference on space science and communication (iconspace).  94-98. 

sulaiman ali mohammad; mardina abdullah; mohd riduan ahmad; shamsul ammar shamsul baharin; sang-jong park; gaopeng lu; vernon cooray.  (2021).  observation of lightning occurrence surrounding antarctica peninsula.  - 2021 35th international conference on lightning protection (iclp) and xvi international symposium on lightning protection (sipda).  1-4. 

n.s.arshad, m.abdullah, s.a.samad, n.abdullah.  (2021).  high-intensity lightning recognition system using very low frequency signal features.  - journal of atmospheric and solar-terrestrial physics.  1-9. 

roslinda rosli, mardina abdullah, nur choiro siregar, nurul shazana abdul hamid, sabirin abdullah, gan kok beng, lilia halim, noridawaty mat daud, siti aminah bahari, rosadah abd majid, badariah bais.  (2020).  student awareness of space science: rasch model analysis for validity and reliability.  - world journal of education.  170-177. 

mohd faisal ibrahim, aqilah baseri huddin, fazida hanim hashim, mardina abdullah, ashrani aizzuddin abd rahni, seri mastura mustaza, aini hussain, mohd hairi mohd zaman.  (2020).  strengthening programming skills among engineering students through experiential learning based robotics project.  - international journal of evaluation and research in education.  939-946. 

wan nur arina wan mohd nor, mardina abdullah, mohd riduan ahmad, siti khalijah zainudin, norbayah yusop, wayan suparta, adriana maria gulisano.  (2020).  the response between vtec and lightning activity over the antarctic peninsula.  - polar science.  1-17. 

a.o. afolayan, j.s. mandeep, m. abdullah, s.m. buhari.  (2020).  observation of the north-south asymmetry in the equatorial spread f intensity at the brazilian longitude.  - advances in space research.  50-63. 

suhaila m buhari, mardina abdullah.  (2020).  gelembung plasma ruang angkasa aplikasi gps.  - .  145. 

siti aminah bahari, mardina abdullah, tajul ariffin musa, zahra bouya.  (2020).  modelling and mapping ionosphere over malaysia.  - .  117. 

nouf abd elmunim, mardina abdullah, siti aminah bahari.  (2020).  characterization of ionospheric delay and forecasting using gps-tec over equatorial region.  - annals of geophysics.  1-17. 

nurul hajijah hair, badariah bais, mardina abdullah.  (2020).  2019 6th international conference on space science and communication (iconspace2019).  - earth to space bulletin.  5-7. 

sabirin abdullah, roslinda rosli,gan kok beng, mardina abdullah, lilia halim, norisza dalila ismail.  (2020).  stem outreach program of smart control helicopter competition in malaysia: a descriptive analysis.  - jurnal kejuruteraan.  29-34. 

mardina abdullah, mohd riduan ahmad,mohd shahrul mohd nadzir, siti aminah bahari, mona riza mohd esa, earle williams, gaopeng lu.  (2020).  characteristic of lighting flashes over antarctica peninsular and its respond to the upper atmosphere progress report 2.  - .  1-10. 

nurliyana abdul rahim, mohd hezri mokhtar, nadirul hasraf mat nayan, muhammad yusof ismail, suhaila m. buhari, mardina abdullah, siti aminah bahari.  (2020).  l-band amplitude scintillations during solar maximum at a low latitude station.  - international journal of advanced trends in computer science and engineering.  465-470. 

mardina abdullah, siti aminah bahari.  (2020).  what works well (www) during covid19: shifting to virtual.  - asia-oceania space weather alliance online conference on 2020.  1-17. 

mardina abdullah, mohd riduan ahmad,mohd shahrul mohd nadzir, siti aminah bahari, mona riza mohd esa, earle williams, gaopeng lu, norbayah yusop.  (2020).  characteristic of lighting flashes over antarctica peninsular and its respond to the upper atmosphere progress report 3.  - .  1-11. 

mohammad tariqul islam;mardina bt. abdullah;sabirin bin abdullah;mohammad rashed iqbal faruque.  (2020).  development of a new double-negative metamaterial inspired multi-band antenna for satellite communication.  - .  . 

mohd. nizam bin mohd. said;mardina bt. abdullah;khairul nizam abdul maulud;mohd azlan shah bin jaafar;noridawaty binti mat daud;farhanah binti md isa;rawshan ara begum;siti aminah binti bahari;muhamad roszaini bin roslan;nurul hajijah binti hair;sabirin b.  (2020).  low cost earth-space monitoring system.  - .  . 

i. sarudin, n. s. a. hamid, m. abdullah, s. m. buhari, k. shiokawa, y. otsuka, c. y. yatini.  (2020).  equatorial plasma bubble zonal drift velocity variations in response to season, local time, and solar activity across southeast asia.  - journal of geophysical research - space physics.  1-12. 

nurul shazana abdul hamid, khairul adib yusof, mardina abdullah.  (2020).  geomagnetic field observation for deeper understanding of space and ground phenomena.  - iugonet.  -. 

khairul adib yusof, mardina abdullah, nurul shazana abdul hamid, suaidi ahadi, akimasa yoshikawa.  (2020).  normalized polarization ratio analysis for ulf precursor detection of the 2009 m7.6 sumatra and 2015 m6.8 honshu earthquakes.  - jurnal kejuruteraan.  35-41. 

muhammad khairul adib, mardina abdullah, nurul shazana abdul hamid.  (2020).  ramalan gempa bumi mencari keseimbangan dengan medan geomagnet.  - dewan kosmik.  42-45. 

s. a. bello, m. abdullah, n. s. a. hamid, b. w. reinisch, a. yoshikawa, a. fujimoto.  (2019).  response of ionospheric profile parameters to equatorial electrojet over peruvian station.  - earth and space science.  617-628. 

wan nur izzaty ismail, nurul shazana abdul hamid, mardina abdullah, akimasa yoshikawa.  (2019).  longitudinal profile of equatorial electrojet derived from ground and satellite based magnetometers.  - the 2018 ukm fst postgraduate colloquium: proceedings of the universiti kebangsaan malaysia, faculty of science and technology 2018 postgraduate colloquium.  1-5. 

idahwati sarudin, nurul shazana abdul hamid, mardina abdullah, suhaila m buhari.  (2019).  equatorial plasma bubbles zonal velocity in the monthly variations over southeast asia.  - the 2018 ukm fst postgraduate colloquium: proceedings of the universiti kebangsaan malaysia, faculty of science and technology 2018 postgraduate colloquium.  1-4. 

idahwati sarudin, nurul shazana abdul hamid, mardina abdullah, suhaila m buhari.  (2019).  comparison of equatorial plasma bubble zonal drifts and neutral winds velocity over southeast asia.  - journal of physics: conference series.  1-5. 

saeed abioye bello, mardina abdullah, nurul shazana abdul hamid, tatsuhiro yokoyama.  (2019).  seaiono: a windows software tool to extract ionogram dataset from south east asia low-latitude ionospheric observation network.  - journal of physics: conference series.  1-6. 

khairul adib yusof, mardina abdullah, nurul shazana abdul hamid, suaidi ahadi.  (2019).  on effective ulf frequency ranges for geomagnetic earthquake precursor.  - journal of physics: conference series.  1-8. 

wan nur izzaty ismail, nurul shazana abdul hamid, mardina abdullah, nurul hafizah mohd shukur, akimasa yoshikawa.  (2019).  variation of equatorial electrojet current profiles over solar phases.  - asm science journal.  125-133. 

khairul adib yusof, nurul shazana abdul hamid, mardina abdullah, suaidi ahadi, akimasa yoshikawa.  (2019).  assessment of signal processing methods for geomagnetic precursor of the 2012 m6.9 visayas, philippines earthquake.  - acta geophysica.  1297-1306. 

khairul afifi nasuddin, mardina abdullah, nurul shazana abdul hamid.  (2019).  characterization of the south atlantic anomaly.  - nonlinear processes in geophysics.  25-35. 

mardina bt. abdullah;mohd azlan shah bin jaafar;noridawaty binti mat daud;siti aminah binti bahari.  (2019).  ionospheric environment characterization for biomass calibration over south east asia (ibisco).  - .  . 

nurul shazana binti abdul hamid;mardina bt. abdullah;sabirin bin abdullah;teh wai leong.  (2019).  investigation of the ionospheric bottom-side profile parameters along the equatorial sector.  - .  1-6. 

mardina bt. abdullah;mohd azlan shah bin jaafar;siti aminah binti bahari;nurul shazana binti abdul hamid;sabirin bin abdullah;teh wai leong.  (2019).  investigation of ionospheric plasma bubbles occurrence due to wavelike structure modulation.  - .  1-5. 

sabirin bin abdullah;mardina bt. abdullah;mohammad tariqul islam.  (2019).  modeling of maximum useable frequency (muf) for hf communication in malaysia.  - .  1-5. 

mardina bt. abdullah;mohd azlan shah bin jaafar;nurul hajijah binti hair.  (2019).  bicara matahari : pembangunan sistem pemantauan aktiviti matahari.  - .  1-6. 

syahril amir mohd, kok beng gan, sabirin abdullah, mardina abdullah.  (2019).  the use of raspberry pi and high resolution sound card for very low frequency signal detection.  - proceeding of the 2019 6th international conference on space science and communication (iconspace).  261-266. 

m. azman, m. abdullah, s. a. bahari, k. a. yusuf, n. s. h. harith.  (2019).  preliminary result of seismic response prior to mw 9.0 of tohoku earthquake in japan.  - proceeding of the 2019 6th international conference on space science and communication (iconspace).  197-200. 

a. w. nurumira, w.-l. teh, m. abdullah.  (2019).  preliminary results on favorable conditions for electron heating and acceleration during magnetic reconnection.  - proceeding of the 2019 6th international conference on space science and communication (iconspace).  108-111. 

mardina abdullah, badariah bais, nurul hajijah hair, siti aminah bahari, muhamad roszaini roslan..  (2019).  laporan selepas mengadakan persidangan 2019 6th international conference on space science and communication (iconspace2019).  - .  1-22. 

rafidah abd malik, mardina abdullah, sabirin abdullah, yokoyama tatsuhiro & clara y. yatini.  (2019).  development of hf modelling in peninsular malaysia during the rise of solar cycle 24.  - defence s & t technical bulletin.  51-60. 

mardina abdullah, mohd riduan ahmad, mohd shahrul mohd nadzir, mona riza mohd esa, earle williams, gaopeng lu, siti aminah bahari.  (2019).  characteristic of lighting flashes over antarctica peninsular and its respond to the upper atmosphere progress report 1.  - .  1-6. 

roslinda rosli,mardina abdullah, nur choiro siregar, nurul shazana abdul hamid, sabirin abdullah, gan kok beng, lilia halim,noridawaty mat daud, siti aminah bahari, rosadah abd majid, badariah bais.  (2019).  exploring space science through the ukm-sid pi outreach program.  - proceeding of the 2019 6th international conference on space science and communication (iconspace).  253-256. 

zainuddin mz, abdullah m, abidin zz, bahari sa, asillam mf, hashim mh, radzi z.  (2019).  review on space science research in malaysia.  - asm science journal.  107-124. 

norbayah yusop, mohd riduan ahmad, mardina abdullah, siti khalijah zainudin, wan nur arina wan mohd nor, kemal maulana alhasa, mona riza mohd esa, muhammad haziq mohamad sabri, wayan suparta, adriana maria gulisano, vernon cooray.  (2019).  cloud-to-ground lightning observations over the western antarctic region.  - polar science.  84-91. 

abimbola o. afolayan, mandeep jit singh, mardina abdullah, suhaila m. buhari, tatsuhiro yokoyama, pornchai supnithi.  (2019).  observation of seasonal asymmetry in the range spread f occurrence at different longitudes during low and moderate solar activity.  - annales geophysicae.  733-745. 

mardina abdullah, siti aminah bahari.  (2019).  gnss and ionosphere.  - spirent gnns seminar : timing, navigation & timing solutions.  1-60. 

a.o. afolayan, j.s. mandeep, m. abdullah, s.m. buhari.  (2019).  statistics of spread f characteristics across different sectors and iri 2016 prediction.  - advances in space research.  2154-2163. 

mardina abdullah & siti aminah bahari.  (2019).  space weather research in ukm.  - international symposium on space science(isss).  1-43. 

norbayah yusop, mohd riduan ahmad, mardina abdullah, mona riza mohd esa, sulaiman ali mohammad, wayan suparta, adriana maria gulisano and vernon cooray.  (2019).  seasonal analysis of cloud-to-ground lightning flash activity in the western antarctica.  - atmosphere.  1-16. 

n.s. arshad, m. abdullah, s.a. samad & n.m. hatta.  (2019).  lightning severity classification technique using very low frequency signal feature extraction.  - journal of atmospheric and solar-terrestrial physics.  1-10. 

mardina abdullah, badariah bais, mohd hezri mokhtar, alina marie hasbi.  (2019).  sistem penderiaan suar matahari dan cuaca angkasa.  - .  126. 

wayan suparta, mardina abdullah & mahamod ismail.  (2018).  space science and communication for sustainability.  - .  348. 

m. abdullah, r.a. majid, b. bais, n.s. bahri, m.f. asillam.  (2018).  fostering research aptitude among high school students through space weather competition.  - advances in space research.  478-486. 

rafidah abd malik, mardina abdullah, sabirin abdullah & mariyam jamilah homam.  (2018).  comparison of measured and predicted hf pperating frequencies during low solar activity.  - international conference on space science and communication (iconspace2017).  . 

wan nur izzaty ismail, nurul shazana abdul hamid, mardina abdullah & akimasa yoshikawa.  (2018).  variation of eej longitudinal profile during maximum phase of solar cycle 24.  - proceedings of ipi research colloquium 2017.  . 

idahwati sarudin, nurul shazana abdul hamid, mardina abdullah & suhaila m buhari.  (2018).  zonal velocity drift of equatorial plasma bubbles calculated over southeast asia.  - proceedings of ipi research colloquium.  . 

liliahalim,kalaivanichellappan,ruhizanyasin,kamisahosman,zanatoniksan,azminshamrambely,wjulianawahmad,effandizakaria,hafizahhusain,mardinaabdullah,rizafizahothaman,mdizwanmahmud,roslindarosli,ayazidabakar,tmastura tsoh,m.sattar rasul,sabirinab&sitimistima.  (2018).  futuristic multidiscipline stem mentoring program.  - the 17th international expo on inventions and innovations.  . 

mardina abdullah, rosadah abd majid, badariah bais, nor syaidah bahri & mohd hezri mokhtar.  (2018).  space weather monitoring system competition for secondary school students in malaysia.  - international conference on space science and communication (iconspace2017).  . 

rafidah abd malik, mardina abdullah, sabirin abdullah & mariyam jamilah homam.  (2018).  comparison of measured and predicted hf operating frequencies during low solar activity.  - international conference on space science and communication (iconspace2017).  . 

rohaida mat akir, mardina abdullah, kalaivani chellappan and siti aminah bahari.  (2018).  ionospheric tec response to the partial solar eclipse over the malaysian region.  - international conference on space science and communication (iconspace2017).  87-95. 

siti aminah bahari & mardina abdullah.  (2018).  a brief review: response of the ionosphere to solar activity over malaysia.  - international conference on space science and communication (iconspace2017).  . 

siti aminah bahari, mardina abdullah, zahra bouya & tajul ariffin musa.  (2018).  determination of the gps satellite elevation mask angle for ionospheric modeling the ionosphere over malaysia.  - proceeding of ipi research colloquium 2017.  35-38. 

norbayah yusop, mardina abdullah & mohd riduan ahmad.  (2018).  observations of lightning and background electric field in antarctica peninsula.  - proceedings of ipi research colloquium 2017.  75-77. 

suhaila m buhari, mardina abdullah & tajul ariffin musa.  (2018).  large scale wave structure prior to the developmet of equatorial plasma bubbles.  - proceedings of ipi research colloquium 2017.  46-48. 

rohaida mat akir, mardina abdullah, kalaivani chellappan & siti aminah bahari.  (2018).  comparison of the neural network and the iri model for forecasting tec over ukm station.  - proceedings of ipi research colloquium 2017.  . 

siti aminah bahari, mardina abdullah, zahra bouya, tajul ariffin musa, robyn fiori & suhaila m buhari.  (2018).  mapping the regional ionosphere over malaysia using spherical cap harmonic analysis.  - international school on equatorial and low latitude ionosphere (iselion 2018).  . 

suhaila m buhari, roland t. tsunoda, mardina abdullah, tajul ariffin musa & tulasi ram sundarsanam.  (2018).  equatorial plasma bubble for space weather monitoring : spatial relation between large scale wave structures (lswss) and successive equatorial plasma bubbles (epbs) in malaysia.  - international school on equatorial and low-latitude ionosphere (iselion) 2018.  . 

wan nur izzaty ismail, nurul shazana abdul hamid, mardina abdullah, akimasa yoshikawa & teiji uozumi.  (2018).  the longitudinal profile of eej during three phases of solar cycle-24.  - international school on equatorial and low latitude ionosphere.  . 

saeed abioye bello, mardina abdullah & nurul shazana abdul hamid.  (2018).  ionospheric bottomside electron density thickness parameter over southeast asian sector.  - proceedings of ipi research colloquium 2017.  . 

muhammad khairul adib bin muhammad yusof, mardina abdullah, nurul shazana abdul hamid & suaidi ahadi.  (2018).  research proposal presentation - geomagnetic earthquake prediction in southeast asia region.  - japan-malaysia joint seminar on space weather and electromagnetism and intensive course on space magnetohydrodynamics.  . 

nurul shazana binti abdul hamid;geri kibe anak gopir;mardina bt. abdullah;teh wai leong.  (2018).  determination of equatorial electrojet current variability using ground based magnetometer data.  - .  . 

takuya tsugawa, michi nishioka, mamoru ishi, kornyanat hozumi, susumu saito, atsuki shinbori, yuichi otsuka, akinori saito, suhaila m. buhari, mardina abdullah, pornchai supnithi.  (2018).  total electron content observations by dense regional and worldwide international networks of gnss.  - journal of disaster research.  . 

lilia h., kalaivani c., ruhizan m.yasin, kamisah o., zanaton h.iksan, azmin sham r., w.juliana w.ahmad, effandi z., hafizah h., mardina a, rizafizah o., m.izwan mahmud,roslinda r.,abu yazid a.bakar, t.mastura t.soh, m.sattar rasul,sabirin a, s.mistima.  (2018).  futuristic multidiscipline stem mentoring program.  - rampai penyelidik siri 6.  . 

sabirin bin abdullah;mardina bt. abdullah;mohammad tariqul islam;mohammad rashed iqbal faruque.  (2018).  development of a small satellite with novel compact microstrip patch antenna for high speed communication.  - .  . 

s. bohanudin, m. ismail, m. abdullah, and f. adlan.  (2018).  minimizing mobile location error based on hybrid toa-cta for heterogeneous network.  - journal of telecommunication, electronic and computer engineering.  . 

alfonsi, l., povero, g., luca, s., cesaroni, c., forte, b., mitchell, c. n., burston, r., veettil, s. v., aquino, m., klausner, v., muella, m. t. a. h., pezzopane m., giuntini a., hunstad, i., franceschi, g. d., musico, e., pini, m. & nine others.  (2018).  analysis of the regional ionosphere at low latitudes in support of the biomass esa mission.  - ieee transactions on geoscience and remote sensing.  . 

mohammad rashed iqbal faruque;mardina bt. abdullah;mohammad tariqul islam;wayan suparta;mandeep singh a/l jit singh.  (2018).  development of a new metamaterial based wideband uhf rfid tag sensor for humidity sensing applications.  - .  . 

rosadah abd majid, mardina abdullah, badariah bais, nor syaidah bahri, mohd hezri mokhtar, siti aminah bahari.  (2018).  relationship between students' attitudes in space science with their achievements in the field.  - creative education.  . 

mohamad fakhari mehrjardi, hilmi sanusi, mohd. alauddin mohd. ali, mardina abdullah.  (2018).  integrated attitude-orbit dynamics and control of spacecraft systems: state of the art and future trends.  - ieee aerospace & electronic systems magazine.  . 

siti fatimah azzahra ahmad noh, nurul shazana abdul hamid, mardina abdullah, suhaila m buhari, idahwati sarudin, & wan nur izzaty ismail.  (2018).  kebergantungan gelembung plasma khatulistiwa dan arus tentangan elektrojet di sektor barat asia tenggara.  - undergraduate research journal for applied physics and novel materials.  . 

badariah bais, rosadah abd majid, mardina abdullah, nor syaidah bahri.  (2018).  validity and reliability of students perception and attitude towards space science instrument.  - prosiding peka2017.  . 

mohd faisal ibrahim, aqilah baseri huddin, fazida hanim hashim, mardina abdullah, ashrani aizuddin abd rahni, seri mastura mustaza, hafizah husain, jamaliah abu bakar.  (2018).  pemantapan kemahiran pengaturcaraan melalui pembelajaran berasaskan pengalaman bagi pelajar kejuruteraan elektrik dan elektronik.  - prosiding peka 2017. k-novasi pengajaran dan pembelajaran ukm 2018: pendidikan 4.0: graduan kalis masa depan.  . 

dr. sabirin abdullah, nurul hajijah hair & prof. ir. dr. mardina abdullah.  (2018).  mengawal helikopter dengan alat kawalan mikro.  - impak sekolah @ ukm.  . 

mardina abdullah, rosadah abd majid, nor syaidah bahri, badariah bais.  (2017).  pemupukan kemahiran abad ke-21 melalui aktiviti pemantauan cuaca angkasa.  - seminar pendidikan transdisiplin (sted2017).  . 

nurul hajijah hair, mardina abdullah.  (2017).  dewan kosmik.  - bengkel dan pertandingan helikopter kawalan pintar.  17. 

ungku azmi ungku chulan, mardina abdullah, nor fadzilah abdullah.  (2017).  towards the prediction of irreducible error floor in space time trellis code.  - ieee communications letters.  . 

jamaludin badusah, norazah nordin, nor fariza mohd nor, kamal halili hassan, mardina abdullah, mohd juzaiddin ab aziz, marlia mohd hanafiah, helmi norman, wan muna ruzanna wan mohammad, nurul aisyah kamrozzaman.  (2017).  ukm 21st century tr model: membangunkan kemahiran penyelidikan transdisiplin untuk graduan abad ke-21.  - prosiding seminar pendidikan transdisiplin (sted 2017).  1-8. 

saeed abioye bello ,mardina abdullah , nurul shazana abdul hamid.  (2017).  investigation of ionospheric minimum frequency near dip equator.  - advanced science letters.  1329-1332. 

hafizah husain, noorfazila kamal, mohd faisal ibrahim, ashrani aizuddin abd rahni dan mardina abdullah.  (2017).  penggunaan scratch sebagai pengenalan pembelajaran pengaturcaraan tahun satu universiti.  - prosiding knovasi pengajaran dan pembelajaran ukm (pendidikan kejuruteraan dan alam bina) 2016.  20-29. 

w.-l. teh, w. s. chen, and m. abdullah.  (2017).  derivation of gps tec and receiver bias for langkawi station in malaysia.  - international conference on space science and communication: space science for sustainability, iconspace 2017 (journal of physics: conf. series).  1-6. 

s.a. bello, m. abdullah, n.s.a. hamid, a. yoshikawae, a.o. olawepo.  (2017).  variations of b0 and b1 with the solar quiet sq- current system and comparison with iri-2012 model at ilorin.  - advances in space research.  307-316. 

mohammed saeed mohammed, mandeep jit singh, mardina abdullah.  (2017).  new transmitted reference receiver technique to lessen the mui at wpan.  - sylwan.  1-9. 

s.m buhari, m. abdullah, t. yokoyama, y.otsuka, m. nishioka, a.m hasbi, s.a bahari and t.tsugawa.  (2017).  climatology of successive equatorial plasma bubbles observed by gps roti over malaysia climatology.  - journal of geophysical research: space physics.  1-11. 

s a bello, m abdullah, n s a hamid and b w reinisch.  (2017).  comparison of ionospheric profile parameters with iri-2012 model over jicamarca.  - international conference on space science and communication: space science for sustainability, iconspace 2017 (journal of physics: conference series).  1-7. 

w n i ismail, n s a hamid, m abdullah, a yoshikawa and t uozumi.  (2017).  longitudinal variation of eej current during different phases of solar cycle.  - international conference on space science and communication: space science for sustainability, iconspace 2017 (journal of physics: conference series).  1-6. 

t v omotosho, s a akinwumi, m r usikalu, o o ometan, m o adewusi and m abdullah.  (2017).  analysis of non-rainy attenuation on earth-space path in ota, southwest nigeria.  - international conference on space science and communication: space science for sustainability, iconspace 2017 (journal of physics: conference series).  1-6. 

i sarudin, n s a hamid, m abdullah and s m buhari.  (2017).  investigation of zonal velocity of equatorial plasma bubbles (epbs) by using gps data.  - international conference on space science and communication: space science for sustainability, iconspace 2017 (journal of physics: conference series).  1-5. 

malik, r. a, abdullah, m, abdullah, s, homam, m. j, yokoyama, t, yatini, c. y.  (2017).  prediction and measurement of high frequency radio frequencies in peninsular malaysia and comparisons with the international reference ionosphere model.  - advanced science letters.  1294-1298. 

rohaida mat akir, mardina abdullah, kalaivani chellapan, alina marie hasbi and siti aminah bahari.  (2017).  comparative study of tec for gistm stations in the peninsular malaysia region for the period of january 2011 to december 2012.  - advanced science letters.  1304-1309. 

ahmad ridzuan mohammed shariff, norhazlina harun, mandeep singh jit singh, kalaivani chellappan, wayan suparta, fredolin t. tangang, maszidah muhammad, mardina abdullah, and mohammad tariqul islam.  (2017).  utilization of wind steadiness index for identification of malaysian northeast monsoon onset and withdrawal from 2011 to 2015.  - advanced science letters.  1440-1443. 

nouf abd elmunim, mardina abdullah, alina hasbi, and siti aminah bahari.  (2017).  investigation on the implementation of the holt-winter method for ionospheric delay forecasting.  - advanced science letters.  1325-1328. 

mardina abdullah, badariah bais, nurul hajijah hair, noor hayati ahmad rasol & noridawaty mat daud.  (2017).  laporan 2017 international conference on space science and communication (iconspace2017).  - .  . 

noridawaty mat daud dan mardina abdullah.  (2017).  penerokaan dan perkembangan angkasa.  - dewan kosmik.  47. 

a o afolayan, j s mandeep & m abdullah.  (2017).  equatorial spread f and evening vertical drift variability across the solar epoch.  - 2016 angkasa research colloquium.  10-12. 

n.a. elmunim, m. abdullah, a.m. hasbi, s.a. bahari.  (2017).  comparison of gps tec variations with holt-winter method and iri-2012 over langkawi, malaysia.  - advances in space research.  276-285. 

suhaila m buhari, mardina abdullah, yuichi otsuka, tatsuhiro yokoyama, michi nishioka, alina marie hasbie and takuya tsugawa.  (2017).  pengesanan gelembung plasma di dalam lapisan ionosfera menggunakan penerima gps di asia tenggara.  - sains malaysiana.  879-885. 

tam dao, yuichi otsuka, kazuo shiokawa, michi nishioka, mamoru yamamoto, suhaila m. buhari, mardina abdullah and asnawi husin.  (2017).  coordinated observations of postmidnight irregularities and thermospheric neutral winds and temperatures at low latitudes.  - journal of geophysical research: space physics.  7504-7518. 

n yusop, w suparta, s k zainudin, w n a w m nor, a m gulisano, h ochoa & m abdullah.  (2017).  association of the atmospheric electric field and thunderstorm activity in antarctic peninsula.  - 7th malaysian international seminar on antarctica (misa 7).  . 

n.a.elmunim, m.abdullah and a.m.hasbi.  (2017).  improving ionospheric forecasting using statistical method for accurate gps positioning over malaysia.  - 2016 international conference on advances in electrical, electronic and system engineering (icaeese 2016).  352-355. 

suparta w, ismail m, abdullah m, faruque m r i, khairul nizam abdul maulud, mohd shahrul mohd nadzir, mandeep singh jit singh, zamri zainal abidin,sabirin abdullah,teh wai leong, md firoz khan, islam m t, bahari s a, daud n m.  (2017).  2017 international conference on space science and communication.  - 2017 international conference on space science and communication.  1-337. 

mohammed saeed mohammed, mandeep jit singh, mardina abdullah.  (2017).  new tr-uwb receiver algorithm design to mitigate mui in concurrent schemes.  - wireless personal communications.  4431-4450. 

nurul shazana abdul hamid, wan nur izzaty ismail, mardina abdullah and akimasa yoshikawa.  (2017).  latitudinal and longitudinal profile of eej current during different phases of solar cycle.  - jpgu-agu joint meeting 2017.  . 

nurul shazana abdul hamid, saeed abioye bello, mardina abdullah, bodo reinisch, akimasa yoshikawa.  (2017).  the sq-current and ionospheric profile parameters during solar minimum.  - jpgu agu joint meeting 2017.  . 

idahwati sarudin, nurul shazana abdul hamid, mardina abdullah, suhaila m buhari and kazuo shiokawa.  (2017).  zonal drift velocities of equatorial plasma bubble and neutral winds over southeast asia.  - cospar symposium 2017.  . 

wan nur izzaty ismail, nurul shazana abdul hamid, mardina abdullah, akimasa yoshikawa.  (2017).  longitudinal profile of eej during two peaks of sc 24.  - 2nd national school on space and earth electromagnetism (nsosee) 2017.  . 

saeed abioye bello, mardina abdullah, nurul shazana abdul hamid.  (2017).  estimation of ionospheric b- parameter over south-east asia sector using nequick model.  - 2nd national school on space and earth electromagnetism (nsosee) 2017.  . 

tv omotosho, sa akinwumi, oo ometan, mo adewusi, js mandeep, m abdullah.  (2017).  earth-space rain attenuation prediction: its impact at ku, ka and v-band over some equatorial stations.  - journal of informatics and mathematical sciences.  359-374. 

siti aminah bahari, mardina abdullah, baharudin yatim.  (2017).  variasi jumlah kandungan elektron ionosfera di malaysia ketika solar minimum.  - sains malaysiana.  1987-1995. 

mardina abdullah, rosadah abd majid, nor syaidah bahri, badariah bais.  (2017).  pemupukan kemahiran abad ke-21 melalui aktiviti pemantauan cuaca angkasa.  - prosiding seminar pendidikan transdisiplin (sted 2017).  . 

r.a. malik,m. abdullah, s. abdullah, m.j. homam.  (2016).  comparison of maximum usable frequency (muf) variability over peninsular malaysia with iri model during the rise of solar cycle 24.  - journal of atmospheric and solar-terrestrial physics.  87-92. 

mardina abdullah, kok beng gan, sabirin abdullah, badariah bais, rosadah abd majid.  (2016).  ionospheric flare detection using raspberry pi.  - iswi newsletter.  . 

wayan suparta, maszidah muhammad, mandeep singh jit singh, fredolin t. tangang, mardina abdullah, mohammad tariqul islam.  (2016).  variability of gps water vapor associated with warming activity in peninsular malaysia during the period of 2008 - 2011.  - journal of water and climate change.  240-250. 

mardina abdullah,badariah bais,nurul hajijah hair,noridawaty mat daud,noor hayati ahmad rasol.  (2016).  laporan selepas persidangan iconspace 2015.  - .  . 

m. abdullah, n.a. elmunim, a.m. hasbi and s.a. bahari.  (2016).  statistical approaches of ionospheric correction to improve the accuracy of the gps positioning over malaysia.  - .  . 

s.a. bahari, m. abdullah, a.m. hasbi, b. yatim, w. suparta, a. kadokura, g. bjornsson.  (2016).  study of high-latitude ionosphere: one-year campaign over husafell, iceland.  - journal of atmospheric and solar-terrestrial physics.  45-52. 

khairul nizam abdul maulud, mardina abdullah, wayan suparta, sabirin abdullah, mohammad rashed iqbal furuque, teh wai leong, farhanah md isa, nurul hajijah hair, muhamad roszaini roslan, mohd sayuti c.  (2016).  laporan konsolidasi program pengajian siswazah sarjana sains secara penyelidikan, institut perubahan iklim.  - .  . 

khairul nizam abdul maulud, mardina abdullah, wayan suparta, sabirin abdullah, mohammad rashed iqbal furuque, teh wai leong, farhanah md isa, nurul hajijah hair, muhamad roszaini roslan, mohd sayuti c.  (2016).  laporan konsolidasi program pengajian siswazah doktor falsafah secara penyelidikan, institut perubahan iklim.  - .  . 

mardina abdullah, noridawaty mat daud.  (2016).  the ukm-sid space weather monitoring programme.  - earth to space: institute of climate change bulletin.  . 

farah aniza mohd nazri, j.s mandeep, hafizah hussain & mardina abdullah.  (2016).  evolution of satellite technology for global communication.  - the ingenieur.  . 

malik, r. a., abdullah, m., abdullah, s., homam, m. j., yokoyama, t., yatini, c.y..  (2016).  correlation of the ionospheric f2-layer parameters with muf during the rise of solar cycle 24.  - .  . 

mardina abdullah, suhaila m. buhari.  (2016).  gelembungan plasma di angkasa.  - dewan kosmik.  . 

siti aminah bahari, mardina abdullah, tajul ariffin musa, zahra bouya, alina marie hasbi.  (2016).  climatology of total electron content over malaysia for the period of 2003-2014.  - 16th australian space research conference.  46. 

siti aminah bahari,mardina abdullah,tajul ariffin musa,zahra bouya,alina marie hasbi.  (2016).  climatology of total electron content over malaysia for the period of 2003-2014.  - 16th australian space research conference, australia.  . 

mardina abdullah, badariah bais, rosadah abd majid, gan kok beng, sabirin abdullah, noridawaty mat daud, siti aminah bahari, nor syaidah bahri.  (2016).  raspberry pi: green technology for space weather monitoring.  - impact.  . 

mardina abdullah.  (2016).  investigation of ionospheric delay forecasting using gps tec measurements over malaysia.  - research bulletin-innovate.  . 

m. abdullah, n.a. elmunim and s.a. bahari.  (2016).  ionospheric regional forecasting using statistical method for gps application.  - 2016 the 4th aoswa workshop, asia oceania space weather alliance.  . 

rosadah abd majid, mardina abdullah, badariah bais, gan kok beng, sabirin abdullah, nor syaidah bahri.  (2016).  pengayaan pembelajaran sains angkasa menggunakan raspberry pi.  - kongres knovasi pnp ukm 2016.  . 

rohaida mat akir, mardina abdullah, kalaivani chellappan, alina marie hasbi, siti aminah bahari.  (2016).  comparative study of tec for gistm station in the peninsular malaysia region for the period of january 2011 to december 2012.  - 2016 international conference on science and technology applications in climate change.  . 

nouf abd elmunim, mardina abdullah, alina marie hasbi, siti aminah bahari.  (2016).  investigation on the implementation of the holt-winter method for ionospheric delay forecasting.  - 2016 international conference on science and technology applications in climate change.  . 

n a elmunim, m abdullah, s a bahari.  (2016).  variations of the ionospheric delay over malaysia.  - 1st international research conference on engineering, science and humanities 2016 (ircesh).  . 

jamaludin badusah, norazah mohd nordin, mardina abdullah, kamal halili hasan, fariza mohd nor, azmi baharudin, marlia hanafiah, wan muna ruzanna wan mohammad, helmi norman, aisyah kamarozzaman.  (2016).  pembangunan modul pembelajaran, model penyelidikan transdisplin abad ke 21, ukm 21st century tr model.  - knovasi pengajaran dan pembelajaran 2016.  . 

n a elmunim, m abdullah, s a bahari.  (2016).  variations of the ionospheric delay over malaysia.  - 1st international research conference on engineering, science and humanities (ircesh 2016).  208-210. 

norbaizura yaso, alina marie hasbi & mardina abdullah.  (2016).  investigation of ionospheric and geomagnetic response during 2011 tohoku earthquake using ground based measurement.  - indian journal of radio & space physics.  115-125. 

siti nurbaiti ibrahim, mohamad huzaimy jusoh, ahmad asari sulaiman, siti noor aisyah ahmad, mohd zul hilmey makmud, baba musta, mardina abdullah, mhd fairos asillam, nyanasegari bhoo pathy, mohd helmy hashim, yoshikawa akimasa.  (2016).  first geomagnetic observation at sabah, malaysia by using magdas array.  - international journal of simulation: systems, science & technology.  1-8. 

s. a. bahari, m. abdullah, t. a. musa & z. bouya.  (2016).  development of regional ionospheric model using spherical cap harmonic analysis over malaysia : pleminary result.  - 2016 angkasa research colloquium.  15-17. 

s. m. buhari & m. abdullah.  (2016).  the occurrence of an individual structure of equatorial plasma bubble in southeast asian sector.  - 2016 angkasa research colloquium.  1-2. 

t.afifah, f.ramli, s.n.a.ahmad, m.h.jusoh & m.abdullah.  (2016).  daytime and nighttime variations of vlf signal during quiet period.  - 2016 ieee asia-pacific conference on applied electromagnetics, apace 2016.  . 

jamaludin badusah, nor fariza mohd nor, mardina abdullah, mohd juzaiddin abd aziz, norazah nordin, azmi baharudin, marlia mohd hanafiah, wan muna ruzanna wan mohammad, helmi norman,kamal halili hassan.  (2015).  pembangunan kemahiran insaniah melalui modul kemahiran penyelidikan graduan ukm penyelidik mahir.  - .  . 

mardina abdullah, siti aminah bahari, badariah bais, alina marie hasbi, rosadah abd majid, mohd hezri mokhtar, nor syaidah.  (2015).  space weather innovation competition for school stedents in malaysia.  - international journal of humanities, arts and social sciences.  70-74. 

bohanudin s., ismail m., abdulah m..  (2015).  the accuracy of time-based hybrid localization technique in heterogenous wireless network.  - journal of theoretical and applied information technology.  35-42. 

aramesh seif, roland t. tsunoda, mardina abdullah, alina marie hasbi.  (2015).  daytime gigahertz scintillations near magnetic equator: relationship to blanketing sporadic e and gradient-drift instability.  - earth, planets and space.  1-13. 

b. bais, m. abdullah, a. mohamed.  (2015).  development of online project registration and management system (eprm) for masters by coursework.  - journal of engineering science and technology.  18-27. 

siti sarah nik zulkifli, rosdiadee nordin, mahamod ismail, mardina abdullah.  (2015).  investigation of bandwidth allocation based on rat selection in a wireless heterogeneous network for smart home application.  - journal of theoretical and applied information technology.  94-100. 

shariff, ahmad ridzuan mohammed; singh, mandeep singh jit; chellappan, kalaivani; suparta, wayan; tangang, fredolin t.; salimun, ester; muhammad, maszidah; abdullah, mardina; islam, mohammad tariqul.  (2015).  a preliminary study of cold surges and precipitation during the northeast monsoon season over malaysia.  - advanced science letters.  185-188. 

teh w.-l., abdullah m., hasbi a.m..  (2015).  lack of relationship between geoeffectiveness and orientations of magnetic clouds with bipolar b z and unipolar southward b z.  - planetary and space science.  27-34. 

n a elmunim1, m abdullah, a m hasbi1, s a bahari.  (2015).  comparison of statistical holt-winter models for forecasting the ionospheric delay using gps observations.  - indian journal of radio & space physics.  28-34. 

w.-l. teh & m. abdullah.  (2015).  mhd reconstruction of a magnetic cloud in the solar wind.  - 2015 international conference on space science and communication.  . 

rosadah abd majid, mardina abdullah, badariah bais, alina marie hasbi, nor syaidah bahri, siti aminah bahari, mohd hezri mokhtar.  (2015).  malaysian students` perception and attitude towards space science: a pilot study.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  297-301. 

m.e. emetere, t.v. omotosho, j.s. mandeep and m. abdullah.  (2015).  modeling of magnetic loop antenna for an improved rockets/spacecraft communication operation.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  149-151. 

i. abba, t. masri, w.a.w.z. abidin, k.h. ping,v.p. bong, n.b. hussaini, m. abdullah.  (2015).  external antenna design for gps signal reception enhancement.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  . 

t. v. omotosho, o. o. obiyemi, j. s. mandeep, m. abdullah, s. a. akinwumi, a. a. willoughby, o. o. ometan, m. o. adewusi.  (2015).  review of rain attenuation measurements on earth-space links in nigeria.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  . 

s. n. a. ahmad, m. h. jusoh, f. a. m. kasran, m. abdullah, b. veenadhari, t. uozumi, s. abe, a. yoshikawa and m. g. cardinal.  (2015).  variations of ulf and vlf during moderate geomagnetic storm at equatorial region.  - proceeding of the 2015 international conference on space science and communication (iconspace).  256-261. 

malik r. a., abdullah m., abdullah s., homam m. j., yokoyama t., michi, n..  (2015).  ionospheric empirical model: initial approach to muf modeling in the malaysian region.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  252-255. 

n.a.elmunim, m.abdullah, a.m.hasbi and a.zaharim.  (2015).  forecasting ionospheric delay during quiet and disturbed days using the holt-winter method.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  132-135. 

t.v. omotosho, m.e. emetere, m.l. akinyemi, m. abdullah, jit .s, mandeep.  (2015).  mathematical investigations of gas flare constituents in oil producing regions of malaysia.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  111-116. 

s. a. akinwumi, t. v. omotosho, a. a. willoughby, j. s. mandeep, m. abdullah.  (2015).  seasonal variation of surface radio refractivity and water vapour density for 48 stations in nigeria.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  . 

s. m. buhari, m. abdullah, t. yokoyama, a. m. hasbi, y. otsuka, m. nishioka, s.a. bahari, t. tsugawa.  (2015).  climatology of equatorial plasma bubble observed by myrtknet over the years 2008-2013.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  101-105. 

s.a. bahari, m. abdullah, a.m. hasbi.  (2015).  a review of ionospheric studies in malaysia using gps.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  95-100. 

v. p. bong, w. a. wan zainal abidin, m. abdullah, k. hong ping, t. masri, s. a. bahari, and i. abba.  (2015).  gps signal strength due to ionospheric scintillation: preliminary models over sarawak.  - proceeding of the 2015 international conference on space science and communication (iconspace), 10-12 august 2015, langkawi, malaysia.  89-94. 

rohaida mat akir, mardina abdulla, kalaivani chellappan, alina marie hasbi.  (2015).  preliminary vertical tec prediction using neural network: input data selection and preparation.  - 2015 international conference on space science and communication (iconspace).  283-287. 

malik r.a., abdullah m., abdullah s., homam m.j..  (2015).  the influence of sunspot number on high frequency radio propagation.  - 2014 ieee asia-pacific conference on applied electromagnetics, apace 2014 - proceeding.  107-110. 

shariff, a.r.m.; singh, m.s.j.; chellappan, k.; suparta, w.; tangang, f.t.; salimun, e.; muhammad, m.; abdullah, m.; islam, m.t..  (2015).  initial observations of cold surge frequency over southeast asia in relation to enso-induced anomalies.  - 2015 international conference on space science and communication (iconspace), langkawi, malaysia.  453-458. 

khairul afifi nasuddin, mardina abdullah, nurul shazana abdul hamid, alina marie hasbi.  (2015).  preliminary study on the near equatorial magnetic field model and south atlantic anomaly.  - 2015 international conference on space science and communication (iconspace), langkawi, malaysia.  310-313. 

y.l. soon, k.b. gan & m. abdullah.  (2015).  development of very low frequency (vlf) data acquisition system using raspberry pi.  - the international conference on space science and communication (iconspace).  485 - 488. 

saeed abioye bello, mardina abdullah, nurul shazana abd hamid & isaac abiodun adimula.  (2015).  comparison between bottomside parameter b0, b1 and iri-2012 model: b0,b1 and ah at an equatorial electrojet station.  - international reference ionosphere 2015 workshop (iri2015).  . 

sr. dr. khairul nizam abdul maulud, prof. ir. dr. mardina abdullah, prof. madya dr. wayan suparta, dr. sabirin abdullah, dr. mohammad rashed iqbal furuque, dr. teh wai leong, farhanah md isa.  (2015).  laporan semakan program pengajian siswazah doktor falsafah (pengurusan angkasa dan polisi) secara penyelidikan, institut perubahan iklim.  - .  . 

sr. dr. khairul nizam abdul maulud, prof. ir. dr. mardina abdullah, prof. madya dr. wayan suparta, dr. sabirin abdullah, dr. mohammad rashed iqbal furuque, dr. teh wai leong, farhanah md isa.  (2015).  laporan semakan program pengajian siswazah doktor falsafah (astronautik) secara penyelidikan, institut perubahan iklim.  - .  . 

sr. dr. khairul nizam abdul maulud, prof. ir. dr. mardina abdullah, prof. madya dr. wayan suparta, dr. sabirin abdullah, dr. mohammad rashed iqbal furuque, dr. teh wai leong, farhanah md isa.  (2015).  laporan semakan program pengajian siswazah sarjana sains (pengurusan angkasa dan polisi) secara penyelidikan, institut perubahan iklim.  - .  . 

sr. dr. khairul nizam abdul maulud, prof. ir. dr. mardina abdullah, prof. madya dr. wayan suparta, dr. sabirin abdullah, dr. mohammad rashed iqbal furuque, dr. teh wai leong, farhanah md isa.  (2015).  laporan semakan program pengajian siswazah sarjana sains (astronautik) secara penyelidikan, institut perubahan iklim.  - .  . 

sr. dr. khairul nizam abdul maulud, prof. ir. dr. mardina abdullah, prof. madya dr. wayan suparta, dr. sabirin abdullah, dr. mohammad rashed iqbal furuque, dr. teh wai leong, farhanah md isa.  (2015).  laporan semakan program pengajian siswazah doktor falsafah (sains angkasa) secara penyelidikan, institut perubahan iklim.  - .  . 

sr. dr. khairul nizam abdul maulud, prof. ir. dr. mardina abdullah, prof. madya dr. wayan suparta, dr. sabirin abdullah, dr. mohammad rashed iqbal furuque, dr. teh wai leong, farhanah md isa.  (2015).  laporan semakan program pengajian siswazah sarjana sains (sains angkasa) secara penyelidikan, institut perubahan iklim.  - .  . 

mardina abdullah, rosadah abd majid, badariah bais, alina marie hasbi, nor syaidah bahri.  (2015).  fostering research aptitude to high school students through space weather competition.  - .  . 

nouf abd elmunim, mardina abdullah, alina marie hasbi.  (2015).  comparison of gps tec variations with holt-winter method and iri- 2012 over langkawi during high solar activity.  - .  . 

zahira radzi, nouf .a. elmunim, mardina abdullah,alina m. hasbi, mandeep singh.  (2015).  comparison of gps-tec with iri/nequick model over malaysia.  - .  . 

suhaila m buhari, mardina abdullah, tatsuhiro yokoyama, alina marie hasbi, yuichi otsuka, michi nishioka, takuya tsugawa.  (2015).  a statistical study of equatorial plasma bubble observed by gps roti measurement along 96 to 120 east longitude over the years 2008 to 2013..  - .  . 

mardina abdullah, siti aminah bahari.  (2015).  space weather research development in ukm through international collaboration.  - .  . 

wayan suparta, mardina abdullah, mohd alauddin mohd ali, siti aminah bahari, mhd fairos asillam, zahira mohd radzi.  (2015).  understanding equatorial environment (in and from space).  - .  . 

nurul hajijah hair, mardina abdullah.  (2015).  iconspace2015: space technology for humanity.  - earth to space institute of climate change bulletin.  1-5. 

nurul hajijah hair, mardina abdullah.  (2015).  an introduction to angkasa, ukm.  - aoswa link (issue 5, mac 2015).  . 

mandeep singh jit singh, mardina abdullah, masoud shakiba.  (2015).  intelligent items traceability system rfid vs qr.  - the ingenieur magazine of the board engineers malaysia.  . 

ahmad s.n.a., jusoh m.h., shariff k.k.m., abdullah m., asillam m.f., veenadhari b., uozumi t., abe s., yoshikawa a., cardinal m.g..  (2014).  data processing method to classify pc5 ulf pulsations due to solar wind perturbations at equatorial region.  - wseas transactions on signal processing.  337 - 344. 

s. m. buhari, m. abdullah, a.m. hasbi, y. otsuka, t. yokoyama, m. nishioka, and t. tsugawa.  (2014).  continuous generation and two-dimensional structure of equatorial plasma bubbles observed by high-density gps receivers in southeast asia.  - journal of geophysical research:space physics.  10,569-10,580. 

wai leong, teh; mardina, abdullah; alina, hasbi.  (2014).  evidence for the core field polarity of magnetic flux ropes against the reconnection guide field.  - journal of geophysical research: space physics.  1-5. 

tv omotosho, js mandeep, m abdullah.  (2014).  cloud cover cloud liquid water and cloud attenuation at ka and v bands over equatorial climate.  - meteorological applications.  21:777-785. 

tv omotosho, ml akinyemi, js mandeep, m abdullah.  (2014).  total atmospheric absorption of fixed satellite communication signal due to oxygen and water vapor in nigeria.  - ieee antennas and propagation magazine.  56(2):108-121. 

ibrahim y. sokar, md. yusoff jamaluddin, mardina abdullah.  (2014).  short-term performance prediction model for aviation job-shop.  - journal of applied sciences, engineering and technology.  7(7):1256-1261. 

malik, r. a., abdullah, m., abdullah, s., homam, m. j..  (2014).  the influence of sunpsot number on high frequency radio propagation.  - 2014 ieee asia-pacific conference on applied electromagnetics (apace).  . 

suhaila m buhari,mardina abdullah,alina marie hasbi,yuichi otsuka,siti aminah bahari,mohd hezri mokhtar, michi nishioka and takuya tsugawa.  (2014).  the observation of equatorial plasma bubble using all sky imager and gps tec measurement.  - 2014 xxxist ursi general assembly and scientific symposium (ursi gass 2014).  2805-2808. 

fredolin tangang @ tajudin mahmud, liew ju neng, mohd. alauddin mohd. ali, abdul aziz jemain, sahibin @ sahibini abd rahim, mohammad tariqul islam, wayan suparta, muzzneena ahmad mustapha, et. al..  (2014).  the science od tropical climate change.  - .  . 

mardina bt. abdullah, badariah binti bais, baharudin bin yatim, mohd. alauddin bin mohd. ali, rosadah binti abd majid, siti aminah binti bahari, alina marie binti hasbi, noridawaty binti mat daud.  (2014).  pemantapan pembelajaran sains angkasa kepada pelajar sekolah melalui pemantauan cuaca angkasa dengan alat penerima vlf.  - .  . 

mohammad nukman bin mohamad nordin, nur hanisah binti ismail, muhd nur iqbal bin yunus, salleh huddin bin abdul rashid, afifah binti mohamad radzi, norfiza binti apfandi, mardina binti abdullah.  (2014).  the impact of solar flare towards technology.  - future scientists conference 2014.  . 

suhaila m buhari, mardina abdullah, alina marie hasbi, yuichi otsuka.  (2014).  two-dimensional structure of equatorial plasma bubble observed using gps networks in south east asia region.  - 2014 international conference on electronics, information and communications (iceic).  . 

mardina abdullah, siti aminah bahari, badariah bais, alina marie hasbi, rosadah abd majid, mohd hezri mokhtar, norsyaidah bahri.  (2014).  space weather innovation competition for school students in malaysia.  - multidisciplinary innovation for sustainability and growth (misg-2014).  . 

suhaila m buhari,mardina abdullah, alina marie hasbi, yuichi otsuka, michi nishioka, takuya tsugawa.  (2014).  the spatial and temporal evolution of equatorial plasma bubble observed using ground based gps tec measurement.  - japan geoscience union meeting 2014.  . 

zahira mohd radzi, mardina abdullah, alina marie hasbi, mandeep singh jit singh.  (2014).  variability of vertical total electron content (vtec) at bangi, malaysia.  - .  . 

mardina abdullah, alina marie hasbi and badariah bais.  (2014).  space weather innovation competition.  - iswi newsletter.  . 

intan izafina idrus, mardina abdullah, alina marie hasbi, asnawi husin, baharuddin yatim.  (2013).  large-scale traveling ionospheric disturbances observed using gps receivers over high-latitude and equatorial regions.  - journal of atmospheric and solar-terrestrial physics.  102:321-328. 

mustafa dh. hassib, j.s. mandeep, mahamod ismail, rosdiadee nordin, mardina abdullah, m.t. islam.  (2013).  adaptive modulation for space-time block code ofdm systems based on evm.  - ieice communications express.  2(2):74-79. 

t.v. omotosho, j.s mandeep, mardina abdullah.  (2013).  impact of cloud, on fixed satellite communication links on earth-space-path, at ka, and v-band in the africa continent.  - international journal of engineering and technology.  3(1):11-20. 

wayan suparta, faizatul noor abu bakar, mardina abdullah.  (2013).  remote sensing of antarctic ozone depletion using gps meteorology.  - international journal of remote sensing.  34(7):2519-2530. 

intan izafina idrus, mardina abdullah, alina marie hasbi, asnawi husin.  (2013).  observation of large-scale traveling ionospheric disturbance over peninsular malaysia using gps receivers.  - international journal of electrical, electronic science and engineering.  . 

temidayo victor omotosho, jit singh mandeep, mardina abdullah.  (2013).  cloud attenuation studies of the six major climatic zones of africa for ka and v satellite system design.  - annals of geophysics.  56(5):1-18. 

tv omotosho, js mandeep, m abdullah, at adediji.  (2013).  distribution of one-minute rain rate in malaysia derived from trmm satellite data.  - annales geophysicae.  31(11):2013-2022. 

mustafa dh. hassib, js mandeep, rosdiadee nordin, mahamod ismail, mardina abdullah and m.t. islam.  (2013).  adaptive modulation for space-time block code ofdm systems based on the dispersion of symbol.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

tv omotosho, aa willoughby, ml akinyemi, js mandeep, m.abdullah3.  (2013).  one year results of one minute rainfall rate measurement at covenant university southwest nigeria.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

muhammad, maszidah ; abdullah, mardina ; singh, mandeep jit ; suparta, wayan ; islam, mohammad tariqul ; tangang, fredolin.  (2013).  characterization of gps pwv during flooding event over keningau, sabah.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

abdullah m., bais b., hasbi a. m., abd m. r., yatim b., mohd a. m. a, bahari s.a., mat d. n., mokhtar m. h., mohd z. a. f., asillam m.f..  (2013).  development of ukm-sid teaching module for space science education.  - procedia social and behavioral sciences - 6th international forum on engineering education (ifee 2012).  80-85. 

zahira m. radzi, mardina abdullah, alina marie hasbi,js mandeep,siti aminah bahari.  (2013).  seasonal variation of total electron content at equatorial station, langkawi, malaysia.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

nouf abd elmunim ahmed ismail; mardina abdullah; alina marie hasbi; siti aminah bahari.  (2013).  short-term forecasting ionospheric delay over ukm, malaysia, using the holt-winter method.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

siti nurbaiti ibrahim; khairul khaizi mohd shariff; ahmad asari sulaiman; mohamad fahmi hussin; syed abdul mutalib al junid; mardina abdullah.  (2013).  locating tweeks atmospherics source using world-wide lightning location network (wwlln) data.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

aramesh seif; mardina abdullah; alina marie hasbi.  (2013).  seasonal variations of amplitude scintillation events using gps data at malaysia.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

mohd masri abd rashid; mahamod ismail; mohammad mohammadpour salut; alina marie hasbi; mardina abdullah.  (2013).  vlf observation of d-region disturbances associated with solar flares at ukm selangor malaysia.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

omotosho temidayo victor; alex a. willoughby; akinyemi marvel lola; mandeep singh; mardina abdullah.  (2013).  one year results of one minute rainfall rate measurement at covenant university, southwest nigeria.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

norbaizura yaso, alina marie hasbi, mardina abdullah.  (2013).  investigation of ionospheric response due to tohoku earthquake using gps satellite measurements.  - proceeding of the 2013 ieee international conference on space science and communication (iconspace).  . 

mardina abdullah.  (2013).  how does it work : space-based navigation system - gps.  - the ingenieur- magazine of the board of engineers malaysia.  . 

mardina abdullah.  (2013).  melancong ke angkasa.  - dewan kosmik.  . 

salut, m.m. , abdullah, m, graf, k.l, cohen, m.b, cotts, b.r.t., kumar.s,.  (2012).  long recovery vlf perturbations associated with lightning discharges.  - journal of geophysical research a: space physics.  117(8):Art.no A08311. 

norbahiah misran, baba mohd. deros, zahira yaacob, shahrom abdullah, n. e. shanmugam, siti kartom kamaruddin, zamri chik, mardina abdullah, wardah fatimah mohd yusoff, ahmad ashrif a. bakar, farizah ansarudin, mohd fairus awang, arif mohd sham.  (2012).  jurnal kejuruteraan.  - jurnal kejuruteraan.  1-43. 

mustafa dh. hassib, js mandeep, mardina abdullah, mahamod ismail, rosdiadee nordin and mt islam.  (2012).  improved concatenated (rs-cc) for ofdm systems.  - ieice electronics express.  9(6):538-543. 

aramesh seif, mardina abdullah, alina marie hasbi, yuhua zou.  (2012).  investigation of ionospheric scintillation at ukm station, malaysia during low solar activity.  - acta astronautica.  81:92-101. 

mardina abdullah, alina marie hasbi, siti aminah bahari, muhammad norshafiq abd kadir.  (2012).  forecasting ionospheric delay at ukm using statistical method.  - aogs-agu (wstp) joint assembly.  . 

wong pik wah, mardina abdullah, alina marie hasbi, siti aminah bahari.  (2012).  development of a vlf receiver system for sudden ionospheric disturbances (sid) detection.  - 2012 5th ieee asia-pacific conference on applied electromagnetics, apace 2012; melaka; malaysia.  . 

m. m. salut, m. abdullah and m. a. mohd ali.  (2012).  vlf observation of lightning-induced perturbations at ukm, malaysia.  - international conference on engineering and built environment (icebe 2012).  . 

badariah bais, mardina abdullah, azah mohamed.  (2012).  initial development of project monitoring system for masters coursework.  - procedia - social and behavioral sciences.  . 

mardina abdullah, badariah bais, alina marie hasbi, rosadah abd majid, baharudin yatim, mohd alauddin mohd ali, siti aminah bahari, noridawaty mat daud, mohd hezri mokhtar and mhd fairos asillam..  (2012).  development of ukm-sid teaching module for space science education.  - international forum on engineering education 2012 (ifee 2012).  . 

mardina abdullah, m.m. salut.  (2012).  very low frequency remote sensing of ionosheric disturbances caused by lightning discharges.  - innovate : research bulletin engineering and built engineering.  . 

m.m. salut, mardina abdullah.  (2012).  detecting subionospheric eraly vlf pertubations at malaysia.  - innovate : research bulletin engineering and built engineering.  . 

mardina abdullah.  (2012).  space science community program with school students.  - angkasa bulletin.  . 

mardina abdullah, badariah bais, azah mohamed.  (2012).  pembangunan sistem pengurusan dan penilaian projek sarjana kerja kursus secara atas talian.  - kongres pengajaran & pembelajaran ukm2012 15-18 disember 2012, awana, genting, penerbit ukm.  . 

mardina abdullah, siti aminah bahari and mohd alauddin mohd ali.  (2012).  space science research at ukm toward space weather initiative.  - the 1st aoswa workshop.  . 

wayan suparta, faizatul noor abu bakar and mardina abdullah.  (2012).  coreless winter characteristics observed with global positioning system receivers over antarctic and arctic regions.  - american journal of applied sciences.  9(8):1203-1213. 

siti aminah bahari, mardina abdullah and baharudin yatim.  (2011).  the response of tec at quasi-conjugate point gps stations during solar flares.  - acta geophysica.  59(2): 407-427. 

wayan suparta, faizatul noor abu bakar, mardina abdullah.  (2011).  detection of coreless winter in bipolar regions using gps pwv observation.  - fifth malaysia international seminar on antarctica (misa5).  . 

faizatul noor abu bakar, wayan suparta, mardina abdullah.  (2011).  the gps signals affected by the 2010 eyjafjallajökull eruption: an abundant of atmospheric water vapor studies.  - fifth malaysia international seminar on antarctica (misa5).  . 

mardina abdullah, siti aminah bahari, azami zaharim, ahmad faizal mohd zain, siti nor afzan abdul habib and cheak bi yi.  (2011).  forecasting of ionospheric delay using the holt-winters method.  - xxx ursi general assembly and scientific symposium of international union of radio science.  . 

siti aminah bahari, mardina abdullah, alina marie hasbi and baharudin yatim.  (2011).  diurnal, seasonal and geographic location effects on tec variation over malaysia.  - xxx ursi general assembly and scientific symposium of international union of radio science.  . 

mardina abdullah.  (2011).  pemantauan suar matahari.  - dewan kosmik.  . 

cheng chen yee, js mandeep, m abdullah, m tariqul.  (2011).  weather data processing for tropospheric scintillation analysis for year 2008 and 2009.  - regional engineering postgraduate conference 2011, universiti kebangsaan malaysia.  . 

jit singh mandeep, anthony cheng chen yee, mardina abdullah and mohammad tariqul islam.  (2011).  tropospheric scintillation measurements in ku-band satellite signals on earth-space paths with low elevation angle.  - idojaras.  115(4):265-273. 

mahamod ismail, mardina abdullah, wayan suparta, and duratul ain yahya.  (2011).  2011 ieee international conference on space science and communication (iconspace) proceeding.  - 2011 ieee international conference on space science and communication (iconspace) proceeding.  . 

ibrahim y sokar, md yusoff jamaluddin, mardina abdullah, zayed alarabi khalifa.  (2011).  kpis target adjustment based on trade-off evaluation using fuzzy cognitive maps.  - australian journal of basic and applied sciences.  5(12):2048-2053. 

b. voon pai, w.a.w.z. abidin, h. zen, t. masri, a. k. othman, m. abdullah.  (2011).  ionospheric total electron content modelling using gps in equatorial region.  - proceedings of encon2011 4th engineering conference, kuching, sarawak, malaysia..  . 

siti sarah nik zulkifli, mardina abdullah, mahamod ismail.  (2011).  simulation of ionospheric error on gps signals due to changes in the direction of mobile station positions in differential gps.  - annals of geophysics.  54(6):756-760. 

t.v omotosho, j. s. mandeep and m.abdullah.  (2011).  atmospheric gas impact on fixed satellite communication link a study of its effects at ku, ka and v bands in nigeria.  - proceeding of the 2011 ieee international conference on space science and communication (iconspace).  . 

js mandeep, ooi wen hui, m abdullah, m tariqul, m ismail, w suparta, baharudin yatim, p. susthitha menon, h. abdullah.  (2011).  modified itu-r rain attenuation model for equatorial climate.  - 2011 ieee international conference on space science and communication: "towards exploring the equatorial phenomena", iconspace 2011; penang.  . 

anthony cheng chen yee, js mandeep , m abdullah, m tariqul, m ismail, w suparta , baharudin yatim, h abdullah.  (2011).  development of new tropospheric scintillation prediction model for country in tropical climate.  - 2011 ieee international conference on space science and communication: "towards exploring the equatorial phenomena", iconspace 2011; penang.  . 

temidayo victor omotosho, jilt singh mandeep and mardina abdullah.  (2011).  cloud-cover statistics and cloud attenuation at ka-and v-bands for satellite systems design in tropical wet climate.  - ieee antenna and wireless propagation letters.  10:1194-1196. 

ibrahim y sokar, mardina abdullah, md. yusoff jamaluddin.  (2011).  analyzing trade-off issues among key performance indicators using fuzzy cognitive maps.  - epc 2011 regional engineering postgraduate conference 2011, ukm, bangi, selangor d.e.  . 

intan izafina idrus, mardina abdullah, alina marie hasbie, asnawi husin.  (2011).  detection of large scale travelling ionospheric disturbances using myrtknet data.  - epc 2011 regional engineering postgraduate conference 2011, ukm, bangi, selangor d.e.  . 

m. m. salut, mardina abdullah.  (2011).  observation of early vlf perturbations at malaysia.  - indo-us workshop on advancing vlf science through the global awesome network.  . 

m. m. salut, k. k. m. shariff, mardina abdullah.  (2011).  investigation of the d-region ionosphere characteristics using tweek sferics at low latitudes.  - seminar penyelidikan siswazah angkasa (spsa 2011).  . 

aramesh seif, mardina abdullah, alina marie hasbi.  (2011).  investigation of ionospheric scintillation using gps sensing.  - seminar penyelidikan siswazah angkasa (spsa 2011).  . 

suhaila m buhari, mardina abdullah, alina marie hasbi.  (2011).  the investigation of plasma bubbles occurrence in the equatorial, and middle latitude region associated with space weather events.  - seminar penyelidikan siswazah angkasa (spsa 2011).  . 

mardina abdullah, badariah bais & azah mohamed.  (2011).  pembangunan awal sistem pemantauan projek kerja kursus sarjana.  - prosiding kongres pengajaran & pembelajaran ukm 2011 / ukm.  . 

asnawi and mardina abdullah.  (2011).  tec variation duringlow solar activity : a preliminary result of ionosphere tec monitoring using gps over ukm bangi, malaysia.  - international southeast asia low-latitude ionospheric observation network symposium 2011.  . 

mardina abdullah, siti aminah bahari, asnawi.  (2011).  development of ionospheric studies in malaysia particularly in ukm - the national university of malaysia.  - international southeast asia low0latitude ionospheric observation network symposium 2011.  . 

rizal munadi, mahamod ismail, mardina abdullah, norbahiah misran.  (2011).  location management cost strategies in cellular networks.  - int. j. comp. tech. appl.  2(1):188-192. 

asnawi husin, m. abdullah, m. a. momani.  (2011).  observation of medium-scale traveling ionospheric disturbances over peninsular malaysia based on ipp trajectories.  - radio science.  46(2):RS2018. 

j.s. mandeep, anthony cheng chen yee, m. abdullah, m tariqul.  (2011).  comparison and analysis of tropospheric scintillation models for northern malaysia.  - acta astronautica.  69(1-2):2-5. 

m. abdullah, j.s. mandeep, s. zainuddin, s. abdullah and a.f.m. zain.  (2011).  variation of fof2 prior to earthquakes.  - journal of metrology society of india.  26(2):97-103. 

mardina abdullah.  (2011).  suar matahari: letupan terbesar dalam sistem suria.  - dewan kosmik.  . 

mardina abdullah.  (2011).  suar matahari:bila-bila masa.  - dewan kosmik.  . 

mardina abdullah, siti sarah nik zulkifli dan mahamod ismail.  (2011).  kesan perubahan tec, profil ionosfera dan arah kedudukan stesen penerima terhadap ralat ionosfera isyarat gps.  - jurnal kejuruteraan.  23:27-36. 

mohd raihan taha, baba mohd. deros, zahira yaacob, shahrom abdullah, n. e. shanmugam, siti kartom kamaruddin, zamri chik, mardina abdullah, wardah fatimah mohd yusoff, nangkula utaberta, ahmad ashrif a. bakar, aida baharuddin, arif mohd sham.  (2011).  jurnal kejuruteraan.  - jurnal kejuruteraan.  1-68. 

abba, i., abidin, w.a.w.z., othman, a.k., ping, k.h., abdullah, m., pai, b.v..  (2011).  best position method for experimental data acquisition systems using low-cost gps receiver.  - 2011 ieee international conference on space science and communication: "towards exploring the equatorial phenomena",iconspace 2011; penang.  . 

shariff, k.k.m., salut, m.m., abdullah, m., graf, k.l..  (2011).  investigation of the d-region ionosphere characteristics using tweek atmospherics at low latitudes.  - 2011 ieee international conference on space science and communication: "towards exploring the equatorial phenomena", iconspace 2011; penang.  . 

munadi, r., ismail, m., abdullah, m., misran, n..  (2011).  location management cost reduction using fuzzy logic in cellular radio network.  - 2011 2011 ieee international conference on space science and communication: "towards exploring the equatorial phenomena", iconspace 2011; penang.  . 

suryadi, abdullah, m., husain, h..  (2011).  prediction of vlf propagation signal jji japan disturbed by lightning using artificial neural networks: preliminary results.  - 2011 ieee international conference on space science and communication: "towards exploring the equatorial phenomena", iconspace 2011; penang.  . 

seif a., abdullah m., hasbi a.m., zou y..  (2011).  observation of gps ionospheric scintillation at ukm, malaysia.  - 2011 ieee international conference on space science and communication: "towards exploring the equatorial phenomena", iconspace 2011; penang.  . 

pai b.v., abidin w.a.w.z., zen h., masri t., abdullah m..  (2011).  open space mathematical model for the mobile satellite l-band signal in sarawak using global positioning system technology.  - 2011 ieee international conference on space science and communication: "towards exploring the equatorial phenomena", iconspace 2011; penang.  . 

abdullah m., abdullah s., bahari s.a., asnawi, suparta w., zain a.f.mohd., kadokura a., bjornsson g..  (2011).  tec variations at gps stations over high-latitude and at the equatorial region.  - 2011 ieee international conference on space science and communication: "towards exploring the equatorial phenomena", iconspace 2011; penang.  . 

abushagur, aag; abbou, fm; abdullah, m; misran, n.  (2011).  performance analysis of a free-space terrestrial optical system in the presence of absorption, scattering, and pointing error.  - optical engineering.  50(7):075007. 

mardina abdullah, d.a.a. mat dan s.s.n. zulkifli.  (2010).  perbandingan jumlah kandungan elektron di atas variasi longitud khatulistiwa dan latitud menggunakan model iri, nequick dan data ionex.  - journal of the institution of engineers, malaysia.  71(2):9-17. 

y. norsuzila, m. abdullah, m. ismail, m. ibrahim, z. zakaria.  (2010).  total electron content (tec) and estimation of positioning error using malaysia data.  - proceedings of the world congress on engineering 2010 vol i wce 2010, june 30 - july 2, 2010, london, u.k..  . 

m. abdullah, h.j. strangeways, s.s.n. zulkifli.  (2010).  ionospheric differential error determination using ray tracing for a short baseline.  - advances in space research.  46:1326-1333. 

mandeep jit singh, mardina abdullah, baharudin yatim, mahamod ismail and wayan suparta.  (2010).  earth to space link.  - .  253-281. 

mohammad m.p. salut, mardina abdullah and kevin l. graf.  (2010).  detecting subionospheric early vlf perturbations at malaysia.  - asia-pacific symposium on applied electromagnetics and mechanics 2010 (apsaem 2010).  . 

a. seif, m. abdullah, a.m. hasbi.  (2010).  observation of ionospheric scintillation activity during quiet and disturbed days.  - seminar penyelidikan siswazah angkasa (spsa 2010), universiti kebangsaan malaysia.  . 

asnawi, m. abdullah, m.a. momani.  (2010).  analisis variasi tec terhadap kejadian gangguan ionosfera bergerak skala sederhana.  - seminar penyelidikan siswazah angkasa (spsa 2010), universiti kebangsaan malaysia.  . 

w.a. mubarak, m. abdullah, n. misran, a.m. hasbi.  (2010).  study of the ionospheric tec variations prior to strong earthquakes in the sumatra region.  - seminar penyelidikan siswazah angkasa (spsa) 2010, universiti kebangsaan malaysia.  . 

suryadi, m. abdullah, h. husain.  (2010).  observation of sferic effect on vlf signal propagation using line receiver at ukm malaysia.  - seminar penyelidikan siswazah angkasa (spsa) 2010, universiti kebangsaan malaysia.  . 

m.m. salut, m. abdullah.  (2010).  vlf monitoring of subionospheric perturbations observed at malaysia.  - seminar penyelidikan siswazah angkasa (spsa) 2010, universiti kebangsaan malaysia.  . 

suryadi, m. abdullah, h. husain.  (2010).  measured early/fast event using vlf line receiver at ukm site.  - regional engineering postgraduate conference (epc) 2010, universiti kebangsaan malaysia.  . 

riri darwanisari didong, mohammad awad momani, mardina abdullah.  (2010).  the behavior of ionospheric total electron content during annular solar eclipse on 15th january 2010.  - regional engineering postgraduate conference (epc) 2010, universiti kebangsaan malaysia.  . 

s. bohanudin, m. ismail, m. abdullah.  (2010).  location determination technologies in low hearability for third generation cellular system and beyonds.  - regional engineering postgraduate conference (epc) 2010, universiti kebangsaan malaysia.  . 

mohd raihan taha, zahira yaacob, shahrom abdullah, amiruddin ismail, zuhairuse md. darus, siti kartom kamaruddin, baba mohd deros, badariah bais, zamri chik, muhammad farihan irfan mohd nor, mardina abdullah, aida baharuddin & arif mohd sham.  (2010).  jurnal kejuruteraan.  - jurnal kejuruteraan.  1-113. 

mardina abdullah, norbahiah misran, nor nadira m. ariff dan m. fazrin abdullah.  (2010).  perbandingan ralat `multipath` bagi data cerapan gps stesen mass dan stesen rtk.  - jurnal kejuruteraan.  22:11-22. 

mardina abdullah, dayang azra awang mat, ahmad faizal mohd zain, sabirin abdullah, asnawi & siti sarah nik zulkifli.  (2010).  jumlah kandungan elektron sewaktu gangguan ionosfera bergerak di parit raja, johor.  - jurnal kejuruteraan.  22:23-30. 

mardina abdullah, norbahiah misran & nor nadira mohammad ariff.  (2010).  penentuan ralat multipath bagi data cerapan gps julat pseudo di stesen rujukan rtk (real time kinematic) di malaysia.  - jurnal kejuruteraan.  22:31-42. 

mardina abdullah.  (2010).  characterization of polar-equatorial geospace.  - prosiding seminar pemantauan projek penyelidikan gup 2008, pusat pengurusan penyelidikan dan inovasi (crim).  . 

j. s. mandeep & y. y. ng & h. abdullah & m. abdullah.  (2010).  the study of rain specific attenuation for the prediction of satellite propagation in malaysia.  - journal of infrared, millimeter, and terahertz waves.  31(6):681-689. 

norsuzila yaacob, mardina abdullah and mahamod ismail.  (2010).  gps total electron content (tec) prediction at ionosphere layer over the equatorial region.  - .  485-508. 

mardina abdullah.  (2010).  satelit navigasi gps: teknik penjejakan pintar.  - dewan kosmik.  . 

wayan suparta, faizatul noor abu bakar, mardina abdullah.  (2010).  impact of the 2010 icelandic eyjafjallajökull volcanic eruptions on the gps signals.  - 2010 international conference on environmental and engineering applications (iceea 2010).  . 

wayan suparta, faizatul noor abu bakar , mardina abdullah, akira kadokura, natsuo sato and gunnlaugur bjornsson.  (2010).  observations of gpw pwv variability during the sequence of 2010 eyjafjallajökull eruption.  - the 33rd symposium on polar meteorology and glaciology.  . 

f. n. a. bakar, w. suparta, m. abdullah, n. h. a. aziz.  (2010).  troposheric ash response on gps pwv during the 2010 eyjafjallajökull eruption.  - regional engineering postgraduate conference (epc) 2010, universiti kebangsaan malaysia.  . 

f. n. a. bakar, w. suparta, m. abdullah, n. h. a. aziz.  (2010).  response of ozone holes on gps pwv during antarctic winter in 2009.  - seminar penyelidikan siswazah angkasa (spsa) 2010.  . 

wayan suparta, mardina abdullah, baharudin yatim, mohd alauddin mohd ali.  (2009).  upper-lower atmospheric coupling observation at arctic keyhole for advancement global climate change model.  - international seminar on "climate change impacts on water resources and coastal management in developing countries".  . 

wayan suparta, mardina abdullah, baharudin yatim, mohd alauddin mohd ali, akira kadokura, gunnlaugur bjornsson.  (2009).  the first measurements of lower and upper levels of the atmosphere using gps sensing during the september 2008 campaign at husafell, iceland, north pole.  - 4th malaysian international seminar on antarctica (misa4).  . 

wayan suparta, mardina abdullah, mohd alauddin mohd ali, baharudin yatim, natsuo sato, akira kadokura, gunnlaugur bjornsson, grahame j. fraser.  (2009).  solar-terrestrial observations at bipolar conjugate points using global positioning system.  - international conference on instrumentation, communications, information technology and biomedical engineering (icici-bme) 2009.  . 

m. a. momani, b. yatim, m. a. m. ali, m. abdullah.  (2009).  observation of travelling ionospheric disturbances during storm events over antarctica.  - asm science journal.  121-130. 

norsuzila, y., m. abdullah and m. ismail.  (2009).  improving ambiguity resolution for short and medium baseline with an accurate ionospheric modelling.  - the online journal on electronics and electrical engineering (ojeee).  1(1):58-62. 

abu bakar mohamad, zahira yaacob, shahrom abdullah, mardina abdullah, amiruddin ismail, zuhairuse md. darus, siti kartom kamaruddin, baba mohd deros, badariah bais, zamri chik, muhammad farihan irfan mohd nor, aida baharuddin.  (2009).  jurnal kejuruteraan.  - jurnal kejuruteraan.  1-116. 

fares sayadi, mahamod ismail, norbahiah misran, kasmiran jumari and mardina abdullah.  (2009).  efficient detection algorithm for a multiple-input and multiple-output multiuser multi-carrier code division multiple access in time-varying channels.  - american j. of engineering and applied sciences.  2(4):635-643. 

fares sayadi, mahamod ismail, norbahiah misran, kasmiran jumari, mardina abdullah.  (2009).  an efficient hybrid detection algorithm for a full rate quasi-orthogonal prolonged mimo mc-cdma systems.  - proceeding 2009 ieee 9th malaysia international conference on communication (micc 2009), kuala lumpur malaysia.  . 

mardina abdullah, hal j. strangeways, david m. a. walsh.  (2009).  improving ambiguity resolution rate with an accurate ionospheric differential correction.  - journal of navigation.  62(1):151-166. 

m. abdullah, a.f.m. zain, m.h. jusoh, n. misran and w.a. mubarak.  (2009).  ionospheric total electron content response to the december 26, 2004 north sumatra earthquake.  - american journal of applied sciences.  6(4):685-690. 

muhammad saadi, mardina abdullah.  (2009).  development of tec map over equatorial anomaly using gps data.  - international journal of college science in india (ijcsi).  3:24-36. 

mardina abdullah.  (2009).  cuaca di angkasa lepas.  - dewan kosmik.  . 

mardina abdullah.  (2009).  gps penjejak cerdik.  - dewan kosmik.  . 

mardina abdullah.  (2009).  mengesan pratanda gempa bumi.  - dewan kosmik.  . 

asnawi, m. abdullah, m.a momani.  (2009).  observation of medium scale travelling ionospheric disturbance using gps suger.  - 2009 international conference on electrical engineering and informatics 5-7 august 2009, selangor, malaysia.  . 

shahrir abdullah, norhamidi muhamad, riza atiq abdullah o.k. rahmat, baba md. deros, noorhisham tan kofli,mardina abdullah, mazlan mohd. tahir, andanastuti muchtar.  (2009).  penilaian objektif dan hasil program pendidikan berasaskan hasil (obe): soal selidik majikan industri dan alumni.  - asean journal of teaching and learning in higher education.  1(2):1-8. 

norsuzila ya`acob, mardina abdullah, mahamod ismail dan azami zaharim.  (2009).  model validation for gps total electron content using 10th polynomial function technique at an equatorial region.  - wseas transactons on computers.  8(9):1533-1542. 

norsuzila ya`acob, mardina abdullah dan mahamod ismail.  (2009).  gps vertical total electron content (tec) dual frequency technique and map at ionosphere layer using malaysian data.  - international conference on future computer and communication (icfcc 2009)/ kuala lumpur, malaysia.  . 

ya`acob, n; abdullah, m; ismail, m
.  (2009).  multipath mitigation of global positioning system (gps) signal using wavelet technique.  - international conference on digital image processing (icdip 2009)/ bangkok, thailand.  . 

norsuzila ya`acob, mardina abdullah dan mahamod ismail.  (2009).  malaysia precise positioning.  - coordinates.  . 

mardina abdullah.  (2009).  aurora: cahaya yang menakjubkan.  - dewan kosmik.  . 

norsuzila ya`acob, mardina abdullah and mahamod ismail.  (2009).  determination of gps total electron content (tec) at ionosphere layer using malaysian data.  - masaum journal of basic and applied sciences.  1(3):431-435. 

norsuzila ya`acob, mardina abdullah and mahamod ismail.  (2009).  multipath mitigation from gps carrier phase observations using wavelet technique.  - masaum journal of basic and applied sciences.  1(3):426-430. 

norsuzila ya`acob, mardina abdullah and mahamod ismail.  (2009).  ionospheric delay model and application for precise positioning.  - seminar penyelidikan siswazah angkasa (spsa 2009), pulau tioman, pahang, malaysia.  . 

siti aminah bahari, mardina abdullah, baharudin yatim.  (2009).  the variations of tec map over different regions.  - seminar penyelidikan siswazah angkasa (spsa 2009), pulau tioman, pahang..  . 

mardina abdullah, siti aminah bahari, and baharudin yatim.  (2009).  variations of tec over different regions during ionospheric storms.  - 2009 international symposium on gps/gnss, international convention center jeju, south korea.  . 

siti sarah nik zulkifli, mardina abdullah, mahamod ismail, and ahmad faizal mohd zain.  (2009).  comparison of ionospheric delays between 3d ray-tracing and gps-tec measurements.  - 2009 international symposium on gps/gnss, international convention center jeju, south korea.  . 

widdy aulia mubarak, mardina abdullah, norbahiah misran.  (2009).  kajian ionosfera terhadap gempa bumi menggunakan data gps dan pengesan digisonde.  - seminar penyelidikan siswazah angkasa (spsa 2009), pulau tioman, pahang.  . 

fares sayadi, mahamod ismail, norbahiah misran, kasmiran jumari,mardina abdullah.  (2009).  detection algorithm development for 4g applications: mimo mc-cdma communication system.  - seminar penyelidikan siswazah angkasa (spsa 2009), pulau tioman, pahang, malaysia.  . 

suryadi, mardina abdullah, hafizah husain.  (2009).  prediction of vlf propagation disturbance the associated with lightning discharge using artificial neural network.  - seminar penyelidikan siswazah angkasa (spsa 2009), pulau tioman, pahang, malaysia.  . 

asnawi, m. abdullah,m.a momani.  (2009).  analysis of tec variation with the occurrence of medium scale travelling ionospheric disturbance (mstid).  - seminar penyelidikan siswazah angkasa (spsa 2009), pulau tioman, pahang, malaysia.  . 

khairi abdul rahim, mahamod ismail, mardina abdullah.  (2009).  satellite link margin prediction and performance of astro malaysia.  - proceeding of the 2009 international conference on space science and communication, 26-27 october 2009, port dickson, negeri sembilan, malaysia.  . 

asnawi, m. abdullah, m.a momani.  (2009).  medium scale travelling ionospheric disturbance detection using gps myrtknet.  - proceeding of the 2009 international conference on space science and communication, 26-27 october 2009, port dickson, negeri sembilan, malaysia.  . 

siti aminah bahari, mardina abdullah, baharudin yatim.  (2009).  variations of ionospheric tec at geomagnetic conjugate points during solar minimum.  - proceeding of the 2009 international conference on space science and communication, 26-27 october 2009, port dickson, negeri sembilan, malaysia.  . 

ng yoke wei, siti aminah bahari, mardina abdullah, baharudin yatim.  (2009).  regional ionosphere maps over malaysia during solar minimum.  - proceeding of the 2009 international conference on space science and communication, 26-27 october 2009, port dickson, negeri sembilan, malaysia.  . 

widdy aulia mubarak, mardina abdullah, norbahiah misran.  (2009).  ionospheric tec response over simeulue earthquake of 28 march 2005.  - proceeding of the 2009 international conference on space science and communication, 26-27 october 2009, port dickson, negeri sembilan, malaysia.  . 

w. suparta, f. n. a. bakar, m. abdullah, n. sato, a. kadokura, g. bjornsson.  (2009).  monitoring of gps pwv variability at bipolar conjugate points.  - proceeding of the 2009 international conference on space science and communication, 26-27 october 2009, port dickson, negeri sembilan, malaysia.  . 

suryadi, mardina abdullah, hafizah husain, hee teck siang.  (2009).  development of vlf receiver for remote sensing of low atmospheric activities.  - proceeding of the 2009 international conference on space science and communication, 26-27 october 2009, port dickson, negeri sembilan, malaysia.  . 

asnawi, m. abdullah, m.a momani.  (2009).  analysis of tec variation with the occurrence of medium scale travelling ionospheric disturbance (mstid).  - regional engineering postgraduate conference (epc) 2009 / faculty of engineering and build environment.  . 

m. abdullah, a.f.m. zain, y.h. ho and s. abdullah.  (2009).  tec and scintillation study of equatorial ionosphere: a month campaign over sipitang and parit raja stations, malaysia.  - american journal of engineering and applied sciences.  2(1):44-49. 

m. abdullah, a. zaharim, a.f.m. zain, s. abdullah, s.a. bahari, s.n.a.a. habib.  (2009).  forecasting of ionospheric delay obtained from gps observations using holt-winter method.  - european journal of scientific research.  37(3):471-480. 

norsuzila ya`acob, mardina abdullah, mahamod ismail, kamaruzaman jusoff.  (2009).  ionospheric correction and ambiguity resolution in dgps with single frequency.  - applied physics research (apr).  1(2):83-91. 

mardina abdullah, norbahiah misran, nurul shazana abdul hamid, syuhaila mustafa, noor shuhaira rejab, mohd azlan shah jaafar, tuan nuramalina tuan ali.  (2009).  prosiding seminar penyelidikan siswazah angkasa.  - prosiding seminar penyelidikan siswazah angkasa, 6-8 ogos 2009, berjaya tioman beach resort, pulau tioman, pahang (isbn: 97808344827).  . 

ya`acob n., abdullah m., ismail m., zaharim a..  (2009).  improving ambiguity resolution using an ionospheric differential correction.  - european journal of scientific research.  29(1):6-12. 

ya`acob n., abdullah m., ismail m., zaharim a..  (2009).  model validation for total electron content (tec) at an equatorial region.  - european journal of scientific research.  28(4):643-649. 

abdullah s., rahmat r.a.a.o.k., zaharim a., muhamad n., deros b.m., kofli n.t., abdullah m., mohd. tahir m., muchtar a., azhari c.h..  (2009).  implementing continual review of programme educational objectives and outcomes for obe curriculum based on stakeholders` input.  - european journal of scientific research.  29(1):89-99. 

zulkifli s.s., abdullah m., zaharim a., ismail m..  (2009).  ionospheric effects on gps range finding using 3d ray-tracing and nelder-mead optimisation algorithm.  - wseas transactions on mathematics.  8(1):1-10. 

ya`acob n., abdullah m., mahamod i., zaharim a..  (2009).  model validation for gps total electron content (tec) using 10th polynomial function technique at an equatorial region.  - wseas transactions on computers.  8(9):1533-1542.