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.
Ultrahigh resolution topographic mapping of Mars with MRO HiRISE stereo images: Meter‐scale slopes of candidate Phoenix landing sites
This map shows the geographic impact of Jim Chapel'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 Jim Chapel with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Jim Chapel more than expected).
This network shows the impact of papers produced by Jim Chapel. 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 Jim Chapel. The network helps show where Jim Chapel may publish in the future.
Co-authorship network of co-authors of Jim Chapel
This figure shows the co-authorship network connecting the top 25 collaborators of Jim Chapel.
A scholar is included among the top collaborators of Jim Chapel 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 Jim Chapel. Jim Chapel is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Chapel, Jim, et al.. (2019). GOES-R Series GEO Side-Lobe Capable GPSR Post-Launch Refinements and Operational Capabilities. NASA Technical Reports Server (NASA).2 indexed citations
3.
Chapel, Jim, et al.. (2019). In-Flight Line-Of-Sight Pointing Performance for the GOES-16 and GOES-17 Spacecraft. NASA Technical Reports Server (NASA).1 indexed citations
4.
Chapel, Jim, et al.. (2017). In-Flight Guidance, Navigation, and Control Performance Results for the GOES-16 Spacecraft. NASA Technical Reports Server (NASA).1 indexed citations
5.
Chapel, Jim, et al.. (2017). GPS Receiver On-Orbit Performance for the GOES-R Spacecraft. NASA Technical Reports Server (NASA).18 indexed citations
Chapel, Jim, et al.. (2015). GOES-R Dual Isolation.1 indexed citations
8.
Chapel, Jim, et al.. (2014). Guidance, Navigation, and Control Performance for the GOES-R Spacecraft. NASA Technical Reports Server (NASA).2 indexed citations
Chapel, Jim. (1989). Performance limitations of bilateral force reflection imposed by operator dynamic characteristics. NASA STI Repository (National Aeronautics and Space Administration).9 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.