This map shows the geographic impact of Umar Hamzah'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 Umar Hamzah with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Umar Hamzah more than expected).
This network shows the impact of papers produced by Umar Hamzah. 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 Umar Hamzah. The network helps show where Umar Hamzah may publish in the future.
Co-authorship network of co-authors of Umar Hamzah
This figure shows the co-authorship network connecting the top 25 collaborators of Umar Hamzah.
A scholar is included among the top collaborators of Umar Hamzah 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 Umar Hamzah. Umar Hamzah is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Samsudin, Abdul Rahim, et al.. (2012). Gravity investigation of the bukit bunuh impact crater at Lenggong, Perak, Malaysia. Sains Malaysiana. 41(12). 1629–1634.2 indexed citations
5.
Hamzah, Umar, et al.. (2012). Kajian migrasi bahan larut resap di tapak pelupusan sampah sungai sedu, telok datuk dengan kaedah geofizik dan geokimia. Sains Malaysiana. 41(7). 829–840.
Samsudin, Abdul Rahim, et al.. (2011). Mapping of faults in the Libyan Sirte basin by magnetic surveys. Sains Malaysiana. 40(8). 853–864.4 indexed citations
8.
Hamzah, Umar, et al.. (2010). Sifat-sifat fizik dan kandungan kimia lempung kaolin Segamat, Johor. Sains Malaysiana. 39(1). 31–38.2 indexed citations
Hamzah, Umar, et al.. (2009). Kepekatan kandungan logam berat dalam tanih di tapak pelupusan sampah Sg. Kembong, Bangi, Selangor. Sains Malaysiana. 38(6). 841–850.3 indexed citations
11.
Hamzah, Umar, et al.. (2009). Kemasinan air perigi dan subpermukaan Lembangan tuba Langkawi dengan analisis hidrokimia dan survei keberintangan elektrik menegak. Sains Malaysiana. 38(6). 851–856.1 indexed citations
12.
Yaacob, Wan Zuhairi Wan, et al.. (2008). 2D electrical resistivity investigation at Ampar Tenang landfill site, Selangor D.E. Sains Malaysiana. 37(1). 33–37.1 indexed citations
13.
Samsudin, Abdul Rahim, et al.. (2007). An integrated geophysical study of the quaternary Basin at Olak Lempit - Banting Area, Selangor, Malaysia. Sains Malaysiana. 36(2). 159–163.3 indexed citations
Hamzah, Umar, et al.. (2006). Pemetaan akuifer dengan teknik geoelektrik di Sungai Kelambu, Banting, Selangor. Sains Malaysiana. 35(2). 35–40.1 indexed citations
16.
Hamzah, Umar, et al.. (2006). Soil and groundwater investigation in Kuala Selangor coastal plain using geoelectrical and geochemical surveys. Sains Malaysiana. 35(1). 11–18.1 indexed citations
Hamzah, Umar, et al.. (1996). Application of Shallow Seismic Reflection in Delineating Bacok Groundwater Aquifers.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.