Roslan Umar

1.5k total citations · 1 hit paper
107 papers, 1.1k citations indexed

About

Roslan Umar is a scholar working on Astronomy and Astrophysics, Aerospace Engineering and Electrical and Electronic Engineering. According to data from OpenAlex, Roslan Umar has authored 107 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Astronomy and Astrophysics, 25 papers in Aerospace Engineering and 15 papers in Electrical and Electronic Engineering. Recurrent topics in Roslan Umar's work include Radio Astronomy Observations and Technology (19 papers), Radio Wave Propagation Studies (14 papers) and Water Quality and Pollution Assessment (10 papers). Roslan Umar is often cited by papers focused on Radio Astronomy Observations and Technology (19 papers), Radio Wave Propagation Studies (14 papers) and Water Quality and Pollution Assessment (10 papers). Roslan Umar collaborates with scholars based in Malaysia, United Kingdom and Indonesia. Roslan Umar's co-authors include Hafizan Juahir, Azman Azid, Azizah Endut, Sharifah Hanis Yasmin Sayid Abdullah, Nur Hanis Mohamad Hanapi, Helena Khatoon, Mohd Khairul Amri Kamarudin, Zainol Abidin Ibrahim, Zainal Abidin and Mohd Ekhwan Toriman and has published in prestigious journals such as SHILAP Revista de lepidopterología, Renewable and Sustainable Energy Reviews and The Astrophysical Journal.

In The Last Decade

Roslan Umar

93 papers receiving 1.1k citations

Hit Papers

A review of biomass-derived heterogeneous catalyst for a ... 2016 2026 2019 2022 2016 100 200 300
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. A review of biomass-derived heterogeneous catalyst for a sustainable biodiesel production
    2016 372 citations Roslan Umar et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Roslan Umar Malaysia 15 393 276 180 134 97 107 1.1k
Pengfei Li China 20 212 0.5× 139 0.5× 46 0.3× 265 2.0× 44 0.5× 98 1.4k
Andong Hu China 22 186 0.5× 99 0.4× 278 1.5× 163 1.2× 109 1.1× 70 1.4k
Masahiro Nishio Japan 16 96 0.2× 258 0.9× 295 1.6× 25 0.2× 92 0.9× 52 1.1k
M.E. Emetere Nigeria 18 193 0.5× 179 0.6× 17 0.1× 79 0.6× 31 0.3× 292 1.6k
Tong United States 16 92 0.2× 111 0.4× 17 0.1× 47 0.4× 177 1.8× 172 1.0k
Jean–Claude André France 16 196 0.5× 256 0.9× 14 0.1× 70 0.5× 39 0.4× 73 1.2k
Xiaoning Chen China 16 103 0.3× 122 0.4× 26 0.1× 121 0.9× 9 0.1× 81 898
Qiao Wang China 26 119 0.3× 196 0.7× 14 0.1× 76 0.6× 27 0.3× 100 1.7k

Countries citing papers authored by Roslan Umar

Since Specialization
Citations

This map shows the geographic impact of Roslan Umar's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Roslan Umar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roslan Umar more than expected).

Fields of papers citing papers by Roslan Umar

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roslan Umar. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Roslan Umar. The network helps show where Roslan Umar may publish in the future.

Co-authorship network of co-authors of Roslan Umar

This figure shows the co-authorship network connecting the top 25 collaborators of Roslan Umar. A scholar is included among the top collaborators of Roslan Umar based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Roslan Umar. Roslan Umar is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Umar, Roslan, et al.. (2024). New crescent moon detection using Circular Hough Transform (CHT). Astronomy and Computing. 51. 100902–100902.
2.
Ya’acob, Norsuzila, et al.. (2024). A review on features and methods of potential fishing zone. International Journal of Power Electronics and Drive Systems/International Journal of Electrical and Computer Engineering. 14(3). 2508–2508.
3.
Hassan, Abdul Rahman, et al.. (2023). Elucidation on Performance and Structural Properties of Skinned Asymmetric Nanofiltration Membrane Based on Theoretical Models. Periodica Polytechnica Chemical Engineering. 67(3). 460–471. 1 indexed citations
4.
Umar, Roslan, et al.. (2023). Modelling of ULF Pc4 - Pc5 Pulsations with solar winds and geomagnetic storm for ULF earthquake precursor. Advances in Space Research. 73(3). 1814–1830.
5.
Umar, Roslan, et al.. (2023). A REVIEW INFLUENCE OF LIGHT ON INSECT ACTIVITY AND BEHAVIOUR: SUSTAINABLE LIGHTING AND LIGHT POLLUTION. Journal of Sustainability Science and Management. 18(2). 232–248. 1 indexed citations
6.
Umar, Roslan, et al.. (2023). Revealing trends: A bibliometric analysis of 28 years of space weather event research publications using the Scopus databases (1994–2022). Advances in Space Research. 72(12). 5753–5766. 4 indexed citations
7.
Khairuldin, Wan Mohd Khairul Firdaus Wan, et al.. (2022). Ethical Issues in Academic Authorship: A Study on Group Writing. Academic Journal of Interdisciplinary Studies. 11(1). 226–226. 3 indexed citations
8.
Umar, Roslan, et al.. (2022). ASSESSMENT OF LIGHT POLLUTION AND SUSTAINABILITY USING GEOSPATIAL APPROACHES: A CASE STUDY IN UITM SHAH ALAM SELANGOR. Journal of Sustainability Science and Management. 17(2). 158–169. 1 indexed citations
9.
Yussof, Wan Nural Jawahir Hj Wan, et al.. (2022). Enhancing Moon Crescent Visibility Using Contrast-Limited Adaptive Histogram Equalization and Bilateral Filtering Techniques. SHILAP Revista de lepidopterología. 1(2022). 3–13. 7 indexed citations
10.
Umar, Roslan, et al.. (2022). ASSESSMENT OF RADIO TELECOMMUNICATION COVERAGE SIGNAL USING GEOSPATIAL ANALYSIS. Jurnal Teknologi. 84(2). 59–69. 1 indexed citations
11.
Umar, Roslan, et al.. (2021). ADJUSTABLE ANTENNA USING PLASMA MEDIUM. 3(4). 21–32.
12.
Kamarudin, Mohd Khairul Amri, et al.. (2020). Potential of field turbidity measurements for computation of total suspended solid in Tasik Kenyir, Terengganu, Malaysia. Desalination and Water Treatment. 187. 11–16. 4 indexed citations
13.
Chong, Ju Lian, et al.. (2020). COVID-19 AND CREMATION OF HUMAN CORPSE DURING DISASTER: NATIONAL SECURITY VS RELIGION BELIEF. Journal of Sustainability Science and Management. 16(1). 38–45. 2 indexed citations
14.
Umar, Roslan, et al.. (2020). Structural analysis and luminescence studies of Eu3+ doped magnesium borophosphate ceramic. Malaysian Journal of Fundamental and Applied Sciences. 16(5). 524–529. 3 indexed citations
15.
Umar, Roslan, et al.. (2019). Burst-Finder: burst recognition for E-CALLISTO spectra. Indian Journal of Physics. 94(7). 947–957. 4 indexed citations
16.
Umar, Roslan, et al.. (2018). The influence of solar radiation on radio signal at UHF band. Journal of Fundamental and Applied Sciences. 10. 268–277. 1 indexed citations
17.
Umar, Roslan, et al.. (2018). Pendekatan Konsep Tabayyun dalam Isu Falak Kontemporari. 1(2). 36–43. 4 indexed citations
18.
Umar, Roslan, et al.. (2016). Assessment of economic feasibility for grid-connected renewable energy system for a household application in Terengganu. International Journal of Energy Production and Management. 1(3). 223–232. 3 indexed citations
19.
Umar, Roslan, et al.. (2016). Temperature Effect on the Tropospheric Radio Signal Strength for UHF Band at Terengganu, Malaysia. International Journal on Advanced Science Engineering and Information Technology. 6(5). 770–770. 19 indexed citations
20.
Abidin, Zainal, et al.. (2016). Implementation of Frequency Drift for Identification of Solar Radio Burst Type II. International Journal on Advanced Science Engineering and Information Technology. 6(5). 775–775. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Pengfei Li Breakdown of academic impact, for papers by Andong Hu Breakdown of academic impact, for papers by Masahiro Nishio Breakdown of academic impact, for papers by M.E. Emetere Breakdown of academic impact, for papers by Tong Breakdown of academic impact, for papers by Jean–Claude André Breakdown of academic impact, for papers by Xiaoning Chen Breakdown of academic impact, for papers by Qiao Wang
Rankless by CCL
2026