R. Ghajar

1.3k total citations
30 papers, 1.1k citations indexed

About

R. Ghajar is a scholar working on Electrical and Electronic Engineering, Safety, Risk, Reliability and Quality and Renewable Energy, Sustainability and the Environment. According to data from OpenAlex, R. Ghajar has authored 30 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Electrical and Electronic Engineering, 18 papers in Safety, Risk, Reliability and Quality and 6 papers in Renewable Energy, Sustainability and the Environment. Recurrent topics in R. Ghajar's work include Power System Reliability and Maintenance (18 papers), Optimal Power Flow Distribution (10 papers) and Electric Power System Optimization (10 papers). R. Ghajar is often cited by papers focused on Power System Reliability and Maintenance (18 papers), Optimal Power Flow Distribution (10 papers) and Electric Power System Optimization (10 papers). R. Ghajar collaborates with scholars based in Lebanon, Canada and China. R. Ghajar's co-authors include R. Billinton, Hua Chen, Hua Chen, R. Chedid, J. Oteng-Adjei, Paul M. Anderson, Edward Chan, E. A. Badr, Joe Khalife and Samer S. Saab and has published in prestigious journals such as Applied Energy, IEEE Transactions on Power Systems and Energy Policy.

In The Last Decade

R. Ghajar

28 papers receiving 970 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
R. Ghajar Lebanon 14 785 730 187 145 134 30 1.1k
G. Papaefthymiou Netherlands 11 1.4k 1.8× 416 0.6× 286 1.5× 196 1.4× 100 0.7× 27 1.6k
A.A. Chowdhury Canada 19 993 1.3× 861 1.2× 333 1.8× 54 0.4× 145 1.1× 75 1.3k
N. Chowdhury Canada 15 1.2k 1.5× 1.2k 1.7× 253 1.4× 67 0.5× 247 1.8× 43 1.7k
Juan Pérez‐Ruiz Spain 9 1.7k 2.2× 451 0.6× 348 1.9× 63 0.4× 101 0.8× 16 1.8k
Morteza Aien Iran 11 1.1k 1.4× 320 0.4× 409 2.2× 34 0.2× 94 0.7× 16 1.2k
Nader Samaan United States 21 1.4k 1.7× 459 0.6× 653 3.5× 66 0.5× 62 0.5× 92 1.5k
D.O. Koval Canada 22 1.2k 1.6× 859 1.2× 454 2.4× 28 0.2× 131 1.0× 97 1.5k
Zhouyang Ren China 21 952 1.2× 153 0.2× 359 1.9× 141 1.0× 76 0.6× 56 1.2k
Mikael Amelin Sweden 19 1.2k 1.6× 260 0.4× 231 1.2× 33 0.2× 30 0.2× 100 1.3k
Changzheng Shao China 23 1.4k 1.8× 325 0.4× 446 2.4× 61 0.4× 107 0.8× 93 1.7k

Countries citing papers authored by R. Ghajar

Since Specialization
Citations

This map shows the geographic impact of R. Ghajar'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 R. Ghajar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. Ghajar more than expected).

Fields of papers citing papers by R. Ghajar

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R. Ghajar. 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 R. Ghajar. The network helps show where R. Ghajar may publish in the future.

Co-authorship network of co-authors of R. Ghajar

This figure shows the co-authorship network connecting the top 25 collaborators of R. Ghajar. A scholar is included among the top collaborators of R. Ghajar 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 R. Ghajar. R. Ghajar 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.
2.
Fawaz, Wissam, R. Ghajar, Chadi Abou‐Rjeily, et al.. (2020). Toward an Improvement of Engineering Teaming Skills Through an In-House Professionalism Course. IEEE Transactions on Education. 63(4). 273–282. 7 indexed citations
3.
Ghajar, R., et al.. (2012). A simulation model for reliability-based appraisal of an energy policy: The case of Lebanon. Energy Policy. 45. 293–303. 18 indexed citations
4.
Ghajar, R. & E. A. Badr. (2008). An Experimental Study of a Collector and Diffuser System on a Small Demonstration Wind Turbine. International Journal of Mechanical Engineering Education. 36(1). 58–68. 13 indexed citations
5.
Chedid, R., et al.. (2007). The potential of gas-to-liquid technology in the energy market: The case of Qatar. Energy Policy. 35(10). 4799–4811. 19 indexed citations
6.
Chedid, R., et al.. (2006). A supply model for crude oil and natural gas in the Middle East. Energy Policy. 35(4). 2096–2109. 26 indexed citations
7.
Ghajar, R. & R. Billinton. (2005). Economic costs of power interruptions: a consistent model and methodology. International Journal of Electrical Power & Energy Systems. 28(1). 29–35. 66 indexed citations
8.
Billinton, R. & R. Ghajar. (2005). A Practical Approach To Evaluating The Marginal Outage Costs In Generating Systems. 2. 786–790. 1 indexed citations
9.
10.
Chedid, R. & R. Ghajar. (2003). Assessment of energy efficiency options in the building sector of Lebanon. Energy Policy. 32(5). 647–655. 22 indexed citations
11.
Ghajar, R., et al.. (2000). Design and cost analysis of an automatic meter reading system for Electricité du Liban. Utilities Policy. 9(4). 193–205. 5 indexed citations
12.
Anderson, Paul M., et al.. (1997). An improved reliability model for redundant protective systems-Markov models. IEEE Transactions on Power Systems. 12(2). 573–578. 66 indexed citations
13.
Billinton, R., Hua Chen, & R. Ghajar. (1996). A sequential simulation technique for adequacy evaluation of generating systems including wind energy. IEEE Transactions on Energy Conversion. 11(4). 728–734. 218 indexed citations
14.
Billinton, R., Hua Chen, & R. Ghajar. (1996). Time-series models for reliability evaluation of power systems including wind energy. Microelectronics Reliability. 36(9). 1253–1261. 380 indexed citations
15.
Ghajar, R., R. Billinton, & Edward Chan. (1996). Distributed nature of residential customer outage costs. IEEE Transactions on Power Systems. 11(3). 1236–1244. 26 indexed citations
16.
Ghajar, R. & R. Billinton. (1995). Evaluation of the marginal outage costs in interconnected and composite power systems. IEEE Transactions on Power Systems. 10(2). 753–759. 7 indexed citations
17.
Ghajar, R. & R. Billinton. (1994). Utilisation of quantitative reliability concepts in evaluating the marginal outage costs of electric generating systems. Reliability Engineering & System Safety. 46(1). 93–100. 2 indexed citations
18.
Ghajar, R. & R. Billinton. (1994). Evaluation of the marginal outage costs in composite generation and transmission systems. Electric Power Systems Research. 31(2). 79–86. 1 indexed citations
19.
Ghajar, R. & R. Billinton. (1993). Comparison of alternative techniques for evaluating the marginal outage costs of generating systems. IEEE Transactions on Power Systems. 8(4). 1550–1556. 9 indexed citations
20.
Billinton, Roy, J. Oteng-Adjei, & R. Ghajar. (1987). Comparison of Two Alternate Methods to Establish an Interrupted Energy Assessment Rate. IEEE Power Engineering Review. PER-7(8). 53–53. 1 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.

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