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51. A Logical Characterization of a Reactive System Language

Author

Kowalski, Robert, Sadri, Fariba, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Bikakis, Antonis, editor, Fodor, Paul, editor, and Roman, Dumitru, editor

Published
2014
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52. Logic Programming in the 1970s

Author

Kowalski, Robert, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Cabalar, Pedro, editor, and Son, Tran Cao, editor

Published
2013
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53. A Logic-Based Framework for Reactive Systems

Author

Kowalski, Robert, Sadri, Fariba, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Bikakis, Antonis, editor, and Giurca, Adrian, editor

Published
2012
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54. WUENIC – A Case Study in Rule-Based Knowledge Representation and Reasoning

Author

Kowalski, Robert, Burton, Anthony, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Okumura, Manabu, editor, Bekki, Daisuke, editor, and Satoh, Ken, editor

Published
2012
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55. Teleo-Reactive Abductive Logic Programs

Author

Kowalski, Robert A., Sadri, Fariba, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Artikis, Alexander, editor, Craven, Robert, editor, Kesim Çiçekli, Nihan, editor, Sadighi, Babak, editor, and Stathis, Kostas, editor

Published
2012
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56. The Scientific Contribution of Marek Sergot

Author

Barker, Steve, Jones, Andrew J. I., Kakas, Antonis, Kowalski, Robert A., Lomuscio, Alessio, Miller, Rob, Muggleton, Stephen, Sartor, Giovanni, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Artikis, Alexander, editor, Craven, Robert, editor, Kesim Çiçekli, Nihan, editor, Sadighi, Babak, editor, and Stathis, Kostas, editor

Published
2012
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59. Predicting Functional Dependency in Patients with Disorders of Consciousness: A TBI-Model Systems and TRACK-TBI Study

Author

Snider, Samuel B., Temkin, Nancy R., Barber, Jason, Edlow, Brian L., Giacino, Joseph T., Hammond, Flora M., Izzy, Saef, Kowalski, Robert G., Markowitz, Amy J., Rovito, Craig A., Shih, Shirley L., Zafonte, Ross D., Manley, Geoffrey T., and Bodien, Yelena G.

Subjects
Article
Abstract

IMPORTANCE: There are currently no models that predict long-term functional dependency in patients with disorders of consciousness (DoC) after traumatic brain injury (TBI). OBJECTIVE: Fit, test, and externally validate a prediction model for 1-year dependency in patients with DoC 2 or more weeks after TBI. DESIGN: Secondary analysis of patients enrolled in TBI Model Systems (TBI-MS, 1988-2020, Discovery Sample) or Transforming Research and Clinical Knowledge in TBI (TRACK-TBI, 2013-2018, Validation Sample) and followed 1-year post-injury. SETTING: Multi-center study at USA rehabilitation hospitals (TBI-MS) and acute care hospitals (TRACK-TBI). PARTICIPANTS: Adults with TBI who were not following commands at rehabilitation admission (TBI-MS; days post-injury vary) or 2-weeks post-injury (TRACK-TBI). EXPOSURES: In the TBI-MS database (model fitting and testing), we screened demographic, radiological, clinical variables, and Disability Rating Scale (DRS) item scores for association with the primary outcome. MAIN OUTCOME: The primary outcome was death or complete functional dependency at 1-year post-injury, defined using a DRS-based binary measure (DRS (Depend) ), indicating need for assistance with all activities and concomitant cognitive impairment. RESULTS: In the TBI-MS Discovery Sample, 1,960 subjects (mean age 40 [18] years, 76% male, 68% white) met inclusion criteria and 406 (27%) were dependent at 1-year post-injury. A dependency prediction model had an area under the receiver operating characteristic curve (AUROC) of 0.79 [0.74, 0.85], positive predictive value of 53%, and negative predictive value of 86% for dependency in a held-out TBI-MS Testing cohort. Within the TRACK-TBI external validation sample (N=124, age 40 [16], 77% male, 81% white), a model modified to remove variables not collected in TRACK-TBI, had an AUROC of 0.66 [0.53, 0.79], equivalent to the gold-standard IMPACT (core+CT) score (0.68; 95% AUROC difference CI: -0.2 to 0.2, p=0.8). CONCLUSIONS AND RELEVANCE: We used the largest existing cohort of patients with DoC after TBI to develop, test and externally validate a prediction model of 1-year dependency. The model’s sensitivity and negative predictive value were greater than specificity and positive predictive value. Accuracy was diminished in an external sample, but equivalent to the best-available models. Further research is needed to improve dependency prediction in patients with DoC after TBI.

Published
2023

60. Abstract 17: Ultra-early Activation Of Neuroinflammatory Cascade Following Acute Stroke: Plasma And Extracellular Vesicle Biomarkers From A Mobile Stroke Unit

Author

Kowalski, Robert, primary, Ledreux, Aurelie, additional, Violette, John E, additional, Neumann, Robert T, additional, Grotta, James C, additional, Ornelas, David, additional, Yu, Xiaoli, additional, Griffiths, Steven G, additional, Lewis, Scott, additional, Nash, Priscilla, additional, Monte, Andrew A, additional, Coughlan, Christina M, additional, Deighan, Clayton, additional, Jones, William J, additional, and Graner, Michael W, additional

Published
2023
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61. An Agent Language with Destructive Assignment and Model-Theoretic Semantics

Author

Kowalski, Robert, Sadri, Fariba, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Dix, Jürgen, editor, Leite, João, editor, Governatori, Guido, editor, and Jamroga, Wojtek, editor

Published
2010
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64. Integrating Logic Programming and Production Systems in Abductive Logic Programming Agents

Author

Kowalski, Robert, Sadri, Fariba, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Polleres, Axel, editor, and Swift, Terrance, editor

Published
2009
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67. The Logical Way to Be Artificially Intelligent

Author

Kowalski, Robert, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Dough, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Carbonell, Jaime G., editor, Siekmann, Jörg, editor, Toni, Francesca, editor, and Torroni, Paolo, editor

Published
2006
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68. Phenotype and Neuronal Cytotoxic Function of Glioblastoma Extracellular Vesicles

Author

Zhou, Wenbo, primary, Lovasz, Daniel, additional, Zizzo, Zoë, additional, He, Qianbin, additional, Coughlan, Christina, additional, Kowalski, Robert, additional, Kennedy, Peter, additional, Graner, Arin, additional, Lillehei, Kevin, additional, Ormond, D., additional, Youssef, A., additional, Graner, Michael, additional, and Yu, Xiaoli, additional

Published
2022
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70. Buttercups and Daisies: Building a Community of Practice amongst Teachers in a Brazilian University

Author

do Nascimento Botelho, Marcel, Kowalski, Robert, and Bartlett, Steve

Abstract

This article examines the promotion and adoption of action research as an instrument of institutional change by academic staff in a Brazilian rural university. The results of the research are presented showing the mobilisation of a group of volunteers, the implementation of their action research projects and the sustainability of the process. Particular attention is drawn to the significance of an insider change agent/facilitator as the initiator of the action research process and how his role became superfluous as the networks evolved into true communities of practice. On reflection the original composite daisy model of Melrose and Reid has been discarded in favour of a simpler buttercup-type flower model of analysis to describe the process. (Contains 2 tables and 5 figures.)

Published
2010
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73. Directions for Logic Programming

Author

Kowalski, Robert A., Goos, G., editor, Hartmanis, J., editor, van Leeuwen, J., editor, Carbonell, Jaime G., editor, Siekmann, Jörg, editor, Kakas, Antonis C., editor, and Sadri, Fariba, editor

Published
2002
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76. Orthoses

Author

Woodard, Eric J., primary, Kowalski, Robert J., additional, Marcotte, Nicolas, additional, and Benzel, Edward C., additional

Published
2017
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77. Contributors

Author

Abbed, Khalid M., primary, Abdullah, Kalil G., additional, Ackerman, Paul D., additional, Alapan, Yunus, additional, Alentado, Vincent J., additional, Alvin, Matthew D., additional, Ames, Christopher P., additional, Anand, Neel, additional, Anderson, Paul A., additional, Angelov, Lilyana, additional, Anissipour, Alireza K., additional, Anson, John A., additional, Apfelbaum, Ronald I., additional, Archdeacon, Michael, additional, Arnold, Paul M., additional, Arun, Mike W.J., additional, Arzi, Harel, additional, Awad, Ahmed J., additional, Awad, Basem I., additional, Bahuleyan, Biji, additional, Bain, Mark D., additional, Baird, Lissa C., additional, Baisden, Jamie, additional, Baldwin, Nevan G., additional, Ball, Perry A., additional, Balsara, Karl E., additional, Baron, Eli M., additional, Batjer, H. Hunt, additional, Bauer, Andrew M., additional, Bauer, Thomas W., additional, Beckman, Joshua M., additional, Bell, Gordon R., additional, Bellabarba, Carlo, additional, Bennett, E. Emily, additional, Benzel, Edward C., additional, Bergey, Darren L., additional, Bhalla, Tarun, additional, Bierbrauer, Karin S., additional, Bilsky, Mark, additional, Birk, Harjus, additional, Bisson, Erica F., additional, Bono, Christopher, additional, Bransford, Richard J., additional, Brodke, Darrel S., additional, Brooks, Nathaniel, additional, Brotea, Cristian, additional, Brougham, Jared R., additional, Browd, Samuel R., additional, Buckley, Robert T., additional, Burch, Shane, additional, Butler, John, additional, Bydon, Mohamad, additional, Casha, Steven, additional, Ceuppens, Jeroen, additional, Chan, Andrew K., additional, Chen, Thomas C., additional, Cheng, Joseph, additional, Chou, Dean, additional, Choudhri, Tanvir, additional, Clark, Aaron J., additional, Conley, Adam M., additional, Cooper, Paul R., additional, Coric, Domagoj, additional, Corriveau, Mark, additional, Côté, Ian P., additional, Coumans, Jean-Valery C.E., additional, Crawford, Charles H., additional, Curry, William T., additional, Daffner, Scott D., additional, Dalbayrak, Sedat, additional, DeMicco, Russell C., additional, Deutsch, Harel, additional, Dhall, Sanjay S., additional, DiAngelo, Denis J., additional, Dickman, Curtis A., additional, Dodwad, Shah-Nawaz M., additional, Duarte, Siena M., additional, Ebrahim, Zeyd, additional, Eckardt, Gerald W., additional, Ehni, Bruce L., additional, Eichholz, Kurt M., additional, Eichler, Marc, additional, Elbabaa, Samer K., additional, Elder, Benjamin D., additional, Elder, James B., additional, Ellenbogen, Richard G., additional, Epstein, Nancy, additional, Errico, Thomas J., additional, Esquenazi, Yoshua, additional, Fahim, Daniel K., additional, Farag, Ehab, additional, Farley, Chad W., additional, Fehlings, Michael G., additional, Feigenbaum, Frank, additional, Fenton, Eoin, additional, Ferrara, Lisa A., additional, Fessler, R. David, additional, Fessler, Richard G., additional, Finn, Michael A., additional, Finnan, Ryan, additional, Fischgrund, Jeffrey S., additional, Foley, Kevin T., additional, Fontes, Ricardo B.V., additional, Francis, Todd B., additional, Freedman, Brett A., additional, Frost, Frederick, additional, George, John, additional, German, John W., additional, Gerszten, Peter C., additional, Ghobrial, George M., additional, Ghogawala, Zoher, additional, Gibson, Justin L., additional, Gillis, Christopher C., additional, Goel, Vijay K., additional, Goffin, Jan, additional, Gokaslan, Ziya L., additional, Gollogly, Sohrab, additional, Goodwin, C. Rory, additional, Goulart, Carlos R., additional, Goz, Vadim, additional, Gozal, Yair M., additional, Graham, Randall B., additional, Grant, Gerald A., additional, Guan, Jian, additional, Gulec, Ilker, additional, Gussous, Yazeed M., additional, Guyer, Richard D., additional, Gwinn, David, additional, Ha, Sung, additional, Hadar, Eldad, additional, Haldeman, Clayton L., additional, Halim, Alexander Y., additional, Hamilton, Kimberly M., additional, Hammer, Christine L., additional, Hanbali, Fadi, additional, Hann, Shannon W., additional, Harms, Jurgen, additional, Harrop, James S., additional, Hart, Blaine L., additional, Hart, David J., additional, Harwell, Daniel, additional, Hayek, Reyaad A., additional, Heary, Robert F., additional, Henderson, Fraser C., additional, Hitchon, Patrick W., additional, Hoh, Daniel J., additional, Holman, Paul J., additional, Hosono, Noboru, additional, Houseman, Clifford, additional, Houten, John K., additional, Hsieh, Joseph C., additional, Hsu, Wellington K., additional, Huang, Meng, additional, Hurlbert, R. John, additional, Hwang, Lee, additional, Hwang, Steven, additional, İnceoğlu, Serkan, additional, Infinger, Libby Kosnik, additional, de Oliveira, Tatiana von Hertwig Fernandes, additional, Jalan, Devesh, additional, Jha, Neilank, additional, Johnson, J. Patrick, additional, Jones, Charles I., additional, Jones, G. Alexander, additional, Jones, Michael, additional, Juthani, Rupa G., additional, Kager, Christopher D., additional, Kalani, Maziyar A., additional, Kalani, M. Yashar S., additional, Kalfas, Iain H., additional, Kalra, Ricky R., additional, Karimi, Reza J., additional, Kashlan, Osama, additional, Kasliwal, Manish K., additional, Kaul, Vikas, additional, Kaushal, Mayank, additional, Kenning, Tyler J., additional, Khairi, Saad, additional, Khalaf, Tagreed, additional, Khalil, Jad G., additional, Khoo, Larry T., additional, Kiapour, Ali, additional, Kim, Daniel H., additional, Kim, David H., additional, Kimmell, Kristopher T., additional, Kirshblum, Steven, additional, Kitab, Sameer A., additional, Klimo, Paul, additional, Klineberg, Eric O., additional, Koski, Tyler R., additional, Kosztowski, Thomas A., additional, Kowalski, Robert J., additional, Krishnaney, Ajit A., additional, Krupa, Kelly, additional, Krupa, Kristin, additional, Kshettry, Varun R., additional, Kukreja, Sunil, additional, Kuntz, Charles, additional, Kurpad, Shekar N., additional, Kusuma, Srinivasu, additional, LaBagnara, Michael, additional, La Marca, Frank, additional, Laufer, Ilya, additional, Lavelle, Elizabeth Demers, additional, Lavelle, William F., additional, Lawrence, W. Thomas, additional, Lebl, Darren R., additional, Lee, Bryan S., additional, Lee, Sun-Ho, additional, Lenke, Lawrence G., additional, Leon, Steven P., additional, Li, Amy, additional, Li, Yiping, additional, Lieberman, Isador H., additional, Liu, James K.C., additional, Lo, Victor P., additional, Lollis, S. Scott, additional, Lopez-Gonzalez, Miguel, additional, Lubelski, Daniel, additional, Luciano, Mark G., additional, Machado, Andre G., additional, Maddela, Raghu, additional, Madineni, Ravichandra A., additional, Madura, Casey, additional, Maiman, Dennis J., additional, Malone, David G., additional, Mammis, Antonios, additional, Marawar, Satyajit, additional, Marcotte, Nicolas, additional, Maroon, Joseph C., additional, Martin, Michael D., additional, Martinez-del-Campo, Eduardo, additional, Massicotte, Eric M., additional, Mattei, Tobias A., additional, Maurer, Paul K., additional, Mayer, Eric A.K., additional, del Valle, Miguel Mayol, additional, Mazanec, Daniel J., additional, McCormick, Paul C., additional, McCormick, William, additional, Medress, Zachary A., additional, Mendel, Ehud, additional, Metkar, Umesh S., additional, Miele, Vincent J., additional, Mohyeldin, Ahmed, additional, Monsef, Jad Bou, additional, Moore, Timothy A., additional, Morisue, Hikaru, additional, Morone, Peter, additional, Mroz, Thomas E., additional, Mullin, Jeffrey P., additional, Murtagh, F. Reed, additional, Murtagh, Ryan D., additional, Naderi, Sait, additional, Nagaraj, Usha D., additional, Nalley, Charles C., additional, Nanda, Anil, additional, Nasca, Richard J., additional, Nater, Anick, additional, Neal, Matthew T., additional, Nockels, Russ P., additional, Norwig, John A., additional, Ondoma, Solomon M., additional, Oni-Orisan, Akinwunmi, additional, Oren, Jonathan H., additional, Orning, Jennifer, additional, Orr, R. Douglas, additional, Orrico, Katie, additional, Osorio, Joseph A., additional, Otero-Lopez, Ernesto, additional, O'Toole, John, additional, Park, Paul, additional, Parmar, Vikas, additional, Pashman, Robert S., additional, Patel, Rakesh D., additional, Patel, Smruti K., additional, Perez-Cruet, Mick J., additional, Perin, Noel I., additional, Pettigrew, David B., additional, Phillips, H. Westley, additional, Placide, Rick, additional, Porensky, Paul, additional, Prager, Joshua P., additional, Prasad, Srinivas, additional, Prasarn, Mark L., additional, Ramakrishnan, Rakesh, additional, Ramayya, Ashwin G., additional, Rampersaud, Y. Raja, additional, Rasmussen, Peter A., additional, Ratliff, John K., additional, Rauschning, Wolfgang, additional, Rechtine, Glenn R., additional, Recinos, Pablo F., additional, Resnick, Daniel K., additional, Rhee, Jay, additional, Rhines, Laurence D., additional, Riccio, Alexander R., additional, Richardson, Marlin Dustin, additional, Richter, Bertram, additional, Riesenburger, Ron, additional, Riew, K. Daniel, additional, Rogers, Matthew, additional, Saavedra, Fanor M., additional, Safain, Mina G., additional, Saigal, Rajiv, additional, Sawin, Paul D., additional, Scheer, Justin K., additional, Scheidler, Joshua, additional, Schippert, David W., additional, Schlenk, Richard, additional, Schmidt, Bradley, additional, Schmidt, Meic H., additional, Sciubba, Daniel M., additional, Shaffrey, Christopher I., additional, Shaffrey, Mark E., additional, Shah, Anoli, additional, Sharan, Alok, additional, Sharan, Ashwini D., additional, Shedid, Daniel, additional, Shook, Steven, additional, Silverstein, Michael P., additional, Simpson, Venita M., additional, Sin, Anthony, additional, Singh, Harminder, additional, Smith, Donald A., additional, Smith, Gabriel A., additional, Smith, Justin S., additional, Smith, Kyle A., additional, Sonntag, Volker K.H., additional, Soriano-Baron, Hector, additional, Spetzler, Robert F., additional, Spiker, W. Ryan, additional, Staub, Blake, additional, Steinmetz, Michael P., additional, Stillerman, Charles B., additional, Strayer, Andrea, additional, Subramaniam, Gandhivarma, additional, Sukkarieh, Hamdi G., additional, Sumich, Andrew, additional, Sun, Derrick Y., additional, Sunna, Tarek P., additional, Sure, Durga R., additional, Tallarico, Richard A., additional, Tan, Lee A., additional, Tatsui, Claudio E., additional, Techy, Fernando, additional, Theodore, Nicholas, additional, Theologis, Alexander A., additional, Thomas, Nicholas W.M., additional, Thorp, Brian D., additional, Tintle, Scott, additional, Tjoumakaris, Stavropoula, additional, Tobler, William D., additional, Togawa, Daisuke, additional, Traul, David, additional, Traynelis, Vincent C., additional, Tritle, A. Sophia, additional, Trost, Gregory R., additional, Tsai, Eve C., additional, Ugokwe, Kene, additional, Uluc, Kutlauy, additional, Uribe, Juan S., additional, Vaccaro, Alexander R., additional, Valadka, Alex, additional, Vedantam, Aditya, additional, Veeravagu, Anand, additional, Verma, Kushagra, additional, Vitaz, Todd, additional, Voyadzis, Jean-Marc, additional, Wagner, Scott, additional, Wahlquist, Trevor C., additional, Waldrop, Robert, additional, Walsh, Kevin M., additional, Wang, Jeffrey C., additional, Wang, Michael Y., additional, Wang, Patrick T., additional, Ward, John D., additional, Wardak, Zabi, additional, Wathen, Connor, additional, Weinstein, Philip R., additional, Weisman, Michael, additional, Welch, William C., additional, Weller, Simcha J., additional, Westerlund, L. Erik, additional, White, Jonathan A., additional, Whitmore, Robert G., additional, Wilberger, Jack E., additional, Williams, Kim A., additional, Winkler, Ethan A., additional, Witiw, Christopher D., additional, Wolfla, Christopher E., additional, Wolinsky, Jean-Paul, additional, Wong, Cyrus, additional, Woodard, Eric J., additional, Yanamadala, Vijay, additional, Yanni, Daniel S., additional, Yazbak, Philip A., additional, Yen, Chun-Po, additional, Yilmaz, Mesut, additional, Yoganandan, Narayan, additional, Yonemura, Kenneth S., additional, Yonenobu, Kazuo, additional, Yuan, Hansen A., additional, Yue, John K., additional, Zanation, Adam M., additional, Zavarella, Salvatore M., additional, Zeidman, Seth M., additional, Zileli, Mehmet, additional, Zuckerman, Scott, additional, and Zywicke, Holly, additional

Published
2017
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81. Comparison of Common Outcome Measures for Assessing Independence in Patients Diagnosed with Disorders of Consciousness: A Traumatic Brain Injury Model Systems Study

Author

Snider, Samuel B., primary, Kowalski, Robert G., additional, Hammond, Flora M., additional, Izzy, Saef, additional, Shih, Shirley L., additional, Rovito, Craig, additional, Edlow, Brian L., additional, Zafonte, Ross D., additional, Giacino, Joseph T., additional, and Bodien, Yelena G., additional

Published
2022
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82. Anisotropy Identification for Electromechanical Flight Actuators With Sensorless Rotor Angle Detection

Author

Kowalski, Robert and Windelberg, Jens

Subjects
Physics, Energy Engineering and Power Technology, Transportation, Topology (electrical circuits), Flight control surfaces, multiple saliencies, permanent magnet synchronousmotor (PMSM), Concentrated windings, Finite element method, Inductance, Control theory, Electromagnetic coil, Magnet, Automotive Engineering, sensorless control, Electrical and Electronic Engineering, Synchronous motor, Actuator, electromechanical actuator (EMA)
Abstract

Electromechanical actuation of flight control surfaces based on permanent magnet synchronous motors (PMSMs) becomes an important technology for more electric aircraft architectures. Demanding requirements for fault tolerance and small space envelopes make sensorless control modes a promising technology in this field. However, sensorless rotor angle detection is not always feasible because it requires differential magnetic anisotropy properties of the motor. This article investigates this prerequisite for a PMSM with flux concentrating magnet topology and fractional slot concentrating windings. A nonlinear model that approximates inductance with respect to current and in particular rotor angle variations is identified. The observable anisotropic operating domain is conservatively determined through testing and finite element analysis (FEA).

Published
2020
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90. Legislation as logic programs

Author

Kowalski, Robert A., Siekmann, J., editor, Goos, G., editor, Hartmanis, J., editor, Comyn, G., editor, Fuchs, N. E., editor, and Ratcliffe, M. J., editor

Published
1992
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92. Comparison of common outcome measures for assessing independence in patients diagnosed with disorders of consciousness: A Traumatic Brain Injury Model Systems Study

Author

Snider, Samuel, primary, Kowalski, Robert G, additional, Hammond, Flora, additional, Izzy, Saef, additional, Shih, Shiley, additional, Rovito, Craig, additional, Edlow, Brian L, additional, Zafonte, Ross, additional, Giacino, Joseph T, additional, and Bodien, Yelena L, additional

Published
2022
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98. Computational Logic

Author

Kowalski, Robert and Commission Of The European Communities Directorate-General Telecommunications, Information Industries And Innovation

Published
1990
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