Timothy J. Callahan
- Fluid Flow and Transfer Processes top 0.5%
- Biomedical Engineering top 5%
- Hardware and Architecture top 1%
- Computational Mechanics top 2%
- Computer Networks and Communications top 5%
- Co-authors
- Thomas W. RyanJohn WawrzynekJohn R. HauserLee G. DodgeSeth Copen GoldsteinC. A. MosesAndré DeHonGirish Venkataramani
- Topics
- Advanced Combustion Engine Technologies (25 papers)Biodiesel Production and Applications (15 papers)Vehicle emissions and performance (15 papers)
- Partner nations
- United StatesUnited KingdomPoland
In The Last Decade
Timothy J. Callahan
64 papers receiving 1.4k citations
Peers
Comparison fields: 5 of 90
- Fluid Flow and Transfer Processes 806
- Biomedical Engineering 557
- Hardware and Architecture 499
- Computational Mechanics 451
- Computer Networks and Communications 407
Countries citing papers authored by Timothy J. Callahan
This map shows the geographic impact of Timothy J. Callahan'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 Timothy J. Callahan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Timothy J. Callahan more than expected).
Fields of papers citing papers by Timothy J. Callahan
This network shows the impact of papers produced by Timothy J. Callahan. 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 Timothy J. Callahan. The network helps show where Timothy J. Callahan may publish in the future.
Co-authorship network of co-authors of Timothy J. Callahan
This figure shows the co-authorship network connecting the top 25 collaborators of Timothy J. Callahan. A scholar is included among the top collaborators of Timothy J. Callahan 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 Timothy J. Callahan. Timothy J. Callahan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 1 | |
| 2 | 11 | |
| 3 | 7 | |
| 4 | 4 | |
| 5 | 8 | |
| 6 | 5 | |
| 7 | 8 | |
| 8 | Hydrologic Processes of Forested Headwater Watersheds Across a Physiographic Gradient in the Southeastern United States | 2 |
| 9 | 68 | |
| 10 | Technical Path Evaluation for High Efficiency, Low Emission Natural Gas Engine | 2 |
| 11 | Solvent removes downhole NORM-contaminated BaSO{sub 4} scale | 5 |
| 12 | 11 | |
| 13 | 375 | |
| 14 | Free-piston engine linear generator for hybrid vehicles modeling study | 4 |
| 15 | Effects of gas composition on engine performance and emissions | 6 |
| 16 | 3 | |
| 17 | Combustion of fourteen different vegetable oils in two different diesel engines | 3 |
| 18 | 6 | |
| 19 | Characterization of vegetable oils for use as fuels in diesel engines | 23 |
| 20 | 56 |
About Timothy J. Callahan
Timothy J. Callahan is a scholar working on Fluid Flow and Transfer Processes, Hardware and Architecture and Automotive Engineering, having authored 68 papers that have together received 1.6k indexed citations. Recurring topics across this work include Advanced Combustion Engine Technologies (25 papers), Biodiesel Production and Applications (15 papers) and Vehicle emissions and performance (15 papers). The work is most often cited by research in Fluid Flow and Transfer Processes (806 citations), Hardware and Architecture (499 citations) and Automotive Engineering (310 citations). Timothy J. Callahan has collaborated with scholars based in United States, United Kingdom and Poland. Frequent co-authors include Thomas W. Ryan, John Wawrzynek, John R. Hauser, Lee G. Dodge, Seth Copen Goldstein, C. A. Moses, André DeHon, Girish Venkataramani, Darius Mehta and Tiberiu Chelcea. Their work appears in journals such as Environmental Health Perspectives, Optics Express and Journal of Applied Crystallography.
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.