Faculty

Dr. Eileen M. Ahlin is an associate professor of criminal justice in the School of Public Affairs at Penn State Harrisburg. She joined the faculty in 2013 after 15 years with a private corporation, where she conducted criminal justice research at the federal, state, and local levels. Her teaching and research interests include violence, neighborhood effects, corrections, research methods, and criminological theory.

Dr. Jennifer Gibbs' research interests focus on policing topics, including violence against police, public attitudes toward police, diversity in recruitment and retention, and terrorism. Her work on social distance and attitudes toward police, co-authored with Dr. Jonathan Lee, received recognition in the 2016 Emerald Literati Network Awards for Excellence. At Penn State World Campus, Dr. Gibbs typically teaches courses on policing (CRIMJ 210: Policing in America; CRIMJ 408: Police Administration) and ethics (CRIMJ 465: Ethics in Criminal Justice).

Dr. Ahmet Guler, associate teaching professor in the Department of Sociology and Criminology at Penn State, is director of graduate studies in criminal justice policy and administration. His research focuses on criminal justice policy, policing, terrorism, criminal justice reform, information technology in criminal justice, and transnational crime.

Dr. Don Hummer is co-author/editor of The Culture of Prison Violence, Handbook of Police Administration, and the forthcoming The Technology Revolution in Criminal Justice. His work, focused primarily on offender treatment and control, has appeared in peer-reviewed outlets such as Aggression and Violent Behavior, Probation Journal, Law & Policy, and The Prison Journal.

Dr. Jonathan Lee is an associate professor of criminal justice at Penn State Harrisburg's School of Public Affairs. He specializes in quantitative research on sociology and psychology of deviance, police-public relations, and police decision-making. He is associate editor of International Journal of Offender Therapy and Comparative Criminology, a consultant to Dauphin County DA's Office and police agencies, and principal investigator of criminal justice projects funded by U.S. Department of Justice.

Dr. Siyu Liu specializes in quantitative research on the topic of criminal desistance, police legitimacy and the Forth Amendment process, and the death penalty in China. Dr. Liu is an active member of the Association of Chinese Criminology and Criminal Justice based in the U.S. and has been presenting her research projects in more than eight prestigious universities in China.

Dr. Jennifer L. Schally joined the faculty at Penn State Harrisburg in 2014 after earning her Ph.D. in sociology at the University of Tennessee. Her research interests are mainly in green criminology and crimes by the powerful, including harms to nonhuman animals. She regularly teaches courses in criminology and race and crime. Dr. Schally’s work has appeared in the Journal of Sociology and Social Welfare, the American Journal of Community Psychology, and the Journal of Interpersonal Violence. Her book, Legitimizing Corporate Harm: The Discourse of Agribusiness, was published by Palgrave in 2018.

Dr. Emily Strohacker joined the School of Public Affairs at Penn State Harrisburg in August 2017 as an assistant professor of criminal justice. Her areas of research interest include criminology, deviance, and victimology, specifically in the areas of cyber victimization and sexual victimization. She regularly teaches courses in victimology, research methods, and criminology. Her published works have appeared in Crime & Delinquency, Journal of Psychoactive Drugs, and Police Quarterly.

Dr. Jeffery T. Ulmer is a professor of sociology and criminology at Penn State, and serves as associate department head. His work spans such topics as courts, criminal case processing, sentencing, and corrections, as well as criminological theory, religion and crime, and violent crime.