William D. Ray

913 total citations
20 papers, 790 citations indexed

About

William D. Ray is a scholar working on Automotive Engineering, Health, Toxicology and Mutagenesis and Fluid Flow and Transfer Processes. According to data from OpenAlex, William D. Ray has authored 20 papers receiving a total of 790 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Automotive Engineering, 10 papers in Health, Toxicology and Mutagenesis and 10 papers in Fluid Flow and Transfer Processes. Recurrent topics in William D. Ray's work include Vehicle emissions and performance (18 papers), Advanced Combustion Engine Technologies (10 papers) and Air Quality and Health Impacts (9 papers). William D. Ray is often cited by papers focused on Vehicle emissions and performance (18 papers), Advanced Combustion Engine Technologies (10 papers) and Air Quality and Health Impacts (9 papers). William D. Ray collaborates with scholars based in United States, Ireland and Spain. William D. Ray's co-authors include Fred D. Stump, Silvestre B. Tejada, Roy B. Zweidinger, John E. Sigsby, Kenneth T. Knapp, William R. Pierson, Gary A. Bishop, Donald H. Stedman, John M. Lang and Norman F. Robinson and has published in prestigious journals such as Environmental Science & Technology, Atmospheric Environment and SAE technical papers on CD-ROM/SAE technical paper series.

In The Last Decade

William D. Ray

20 papers receiving 677 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
William D. Ray United States 13 509 479 357 163 110 20 790
Thomas Lanni United States 14 547 1.1× 622 1.3× 429 1.2× 195 1.2× 108 1.0× 15 842
Paul Rieger United States 15 736 1.4× 744 1.6× 645 1.8× 186 1.1× 108 1.0× 22 1.0k
Andrew J. Kean United States 9 456 0.9× 572 1.2× 545 1.5× 198 1.2× 66 0.6× 16 877
Gary R. Kendall United States 7 372 0.7× 423 0.9× 351 1.0× 105 0.6× 40 0.4× 10 589
Kevin Whitney United States 9 309 0.6× 399 0.8× 222 0.6× 82 0.5× 124 1.1× 12 577
Frank Black United States 15 309 0.6× 230 0.5× 151 0.4× 79 0.5× 160 1.5× 38 560
Ronald L. Bradow United States 13 300 0.6× 235 0.5× 159 0.4× 66 0.4× 113 1.0× 29 547
Anna-Maria Forss Switzerland 16 818 1.6× 626 1.3× 515 1.4× 294 1.8× 230 2.1× 18 1.1k
John E. Sigsby United States 12 206 0.4× 230 0.5× 161 0.5× 83 0.5× 85 0.8× 23 541
Joel F. O. Richert United States 10 289 0.6× 176 0.4× 174 0.5× 65 0.4× 169 1.5× 19 558

Countries citing papers authored by William D. Ray

Since Specialization
Citations

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

Fields of papers citing papers by William D. Ray

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by William D. Ray. 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 William D. Ray. The network helps show where William D. Ray may publish in the future.

Co-authorship network of co-authors of William D. Ray

This figure shows the co-authorship network connecting the top 25 collaborators of William D. Ray. A scholar is included among the top collaborators of William D. Ray 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 William D. Ray. William D. Ray 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.
Stump, Fred D., Kenneth T. Knapp, & William D. Ray. (1996). Influence of Ethanol-Blended Fuels on the Emissions from Three Pre-1985 Light-Duty Passenger Vehicles. Journal of the Air & Waste Management Association. 46(12). 1149–1161. 31 indexed citations
2.
Pierson, William R., Alan W. Gertler, Norman F. Robinson, et al.. (1996). Real-world automotive emissions—Summary of studies in the Fort McHenry and Tuscarora mountain tunnels. Atmospheric Environment. 30(12). 2233–2256. 259 indexed citations
3.
Bishop, Gary A., Scott E. McLaren, Donald H. Stedman, et al.. (1996). Method comparisons of vehicle emissions measurements in the fort mchenry and Tuscarora mountain tunnels. Atmospheric Environment. 30(12). 2307–2316. 26 indexed citations
4.
Stump, Fred D., et al.. (1994). Influence of Oxygenated Fuels on the Emissions from Three Pre-1985 Light-Duty Passenger Vehicles. 44(6). 781–786. 30 indexed citations
5.
Gabele, Peter A., et al.. (1993). Ambient temperature and driving cycle effects on CNG motor vehicle emission. Technical paper series (Final). OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). 1 indexed citations
6.
Stump, Fred D., Kenneth T. Knapp, William D. Ray, Richard E. Snow, & Leslie Eudy. (1992). The Composition of Motor Vehicle Organic Emissions Under Elevated Temperature Summer Driving Conditions (75 to 105 °F)—Part II. Journal of the Air & Waste Management Association. 42(10). 1328–1335. 2 indexed citations
7.
Stump, Fred D., et al.. (1992). The Composition of Motor Vehicle Organic Emissions Under Elevated Temperature Summer Driving Conditions (75 to 105°F). Journal of the Air & Waste Management Association. 42(2). 152–158. 12 indexed citations
8.
Gabele, Peter A., et al.. (1990). Ambient Temperature and Driving Cycle Effects on CNG Motor Vehicle Emission. SAE technical papers on CD-ROM/SAE technical paper series. 1. 5 indexed citations
9.
Stump, Fred D., et al.. (1990). The Seasonal Impact of Blending Oxygenated Organics with Gasoline on Motor Vehicle Tailpipe and Evaporative Emissions - Part II. SAE technical papers on CD-ROM/SAE technical paper series. 1. 6 indexed citations
10.
Stump, Fred D., Kenneth T. Knapp, & William D. Ray. (1990). Seasonal Impact of Blending Oxygenated Organics with Gasoline on Motor Vehicle Tailpipe and Evaporative Emissions. Journal of the Air & Waste Management Association. 40(6). 872–880. 40 indexed citations
11.
Stump, Fred D., Silvestre B. Tejada, William D. Ray, et al.. (1990). The influence of ambient temperature on tailpipe emissions from 1985 to 1987 model year light-duty gasoline motor vehicles—II. Atmospheric Environment Part A General Topics. 24(8). 2105–2112. 34 indexed citations
12.
Snow, Richard, et al.. (1989). Characterization of Emissions from a Methanol Fueled Motor Vehicle. JAPCA. 39(1). 48–54. 10 indexed citations
13.
Stump, Fred D., Silvestre B. Tejada, William D. Ray, et al.. (1989). The influence of ambient temperature on tailpipe emissions from 1984–1987 model year light-duty gasoline motor vehicles. Atmospheric Environment (1967). 23(2). 307–320. 35 indexed citations
14.
Zweidinger, Roy B., John E. Sigsby, Silvestre B. Tejada, et al.. (1988). Detailed hydrocarbon and aldehyde mobile source emissions from roadway studies. Environmental Science & Technology. 22(8). 956–962. 71 indexed citations
15.
Ray, William D., et al.. (1987). Motor vehicle emissions under reduced ambient temperature idle operating conditions. Atmospheric Environment (1967). 21(10). 2077–2082. 36 indexed citations
16.
Sigsby, John E., et al.. (1987). Volatile organic compound emissions from 46 in-use passenger cars. Environmental Science & Technology. 21(5). 466–475. 149 indexed citations
17.
Gabele, Peter A., et al.. (1986). Emissions from a Light-Duty Diesel: Ambient Temperature and Fuel Effects. SAE technical papers on CD-ROM/SAE technical paper series. 1. 4 indexed citations
18.
Black, Frank, et al.. (1984). Emission from In-Use Heavy-Duty Gasoline Trucks. SAE technical papers on CD-ROM/SAE technical paper series. 8 indexed citations
19.
Ray, William D., et al.. (1983). Renorming and the theory of phi-accretive set-valued mappings. Pacific Journal of Mathematics. 106(1). 73–85. 18 indexed citations
20.
Stump, Fred D., Ronald L. Bradow, William D. Ray, et al.. (1982). Trapping Gaseous Hydrocarbons for Mutagenic Testing. SAE technical papers on CD-ROM/SAE technical paper series. 1. 13 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 Thomas Lanni Breakdown of academic impact, for papers by Paul Rieger Breakdown of academic impact, for papers by Andrew J. Kean Breakdown of academic impact, for papers by Gary R. Kendall Breakdown of academic impact, for papers by Kevin Whitney Breakdown of academic impact, for papers by Frank Black Breakdown of academic impact, for papers by Ronald L. Bradow Breakdown of academic impact, for papers by Anna-Maria Forss Breakdown of academic impact, for papers by John E. Sigsby Breakdown of academic impact, for papers by Joel F. O. Richert
Rankless by CCL
2026