New Philadelphia, PA, United States

Chestnut Hill College
New Philadelphia, PA, United States

Chestnut Hill College is a coeducational Roman Catholic college in the Chestnut Hill section of Philadelphia, Pennsylvania, USA. It was founded in 1924, as a women's college, by the Sisters of St. Joseph. It was originally named Mount Saint Joseph College. In 1980, the college established a coeducational graduate education program and started to admit male students to its undergraduate programs in 2003. As of 2012, a total of 2,318 students were enrolled in Chestnut Hill College's three constituent schools, with fewer than 900 as undergraduates. Wikipedia.

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Annunziato A.T.,Chestnut Hill College
Biochimica et Biophysica Acta - Gene Regulatory Mechanisms | Year: 2012

It has been over 35. years since the acceptance of the "chromatin subunit" hypothesis, and the recognition that nucleosomes are the fundamental repeating units of chromatin fibers. Major subjects of inquiry in the intervening years have included the steps involved in chromatin assembly, and the chaperones that escort histones to DNA. The following commentary offers an historical perspective on inquiries into the processes by which nucleosomes are assembled on replicating and nonreplicating chromatin. This article is part of a Special Issue entitled: Histone chaperones and Chromatin assembly. © 2011 Elsevier B.V.

Jiang H.,Chestnut Hill College
IEEE Transactions on Pattern Analysis and Machine Intelligence | Year: 2011

A novel consistent max-covering method is proposed for human pose estimation. We focus on problems in which a rough foreground estimation is available. Pose estimation is formulated as a jigsaw puzzle problem in which the body part tiles maximally cover the foreground region, match local image features, and satisfy body plan and color constraints. This method explicitly imposes a global shape constraint on the body part assembly. It anchors multiple body parts simultaneously and introduces hyperedges in the part relation graph, which is essential for detecting complex poses. Using multiple cues in pose estimation, our method is resistant to cluttered foregrounds. We propose an efficient linear method to solve the consistent max-covering problem. A two-stage relaxation finds the solution in polynomial time. Our experiments on a variety of images and videos show that the proposed method is more robust than previous locally constrained methods. © 2011 IEEE.

The early-life social environment has profound effects on brain development and subsequent expression of social behavior. Oxytocin and vasopressin are expressed and released in the brain and are important regulators of social behavior. Accordingly, the early social environment may alter social behaviors via changes in the oxytocin and/or vasopressin systems. To test this hypothesis, and to gain mechanistic insights, rodent models mimicking either a deprived (e.g. maternal separation) or enriched (e.g. neonatal handling) early social environment have been utilized. Findings indeed show that differences in the quality of the early social environment are associated with brain region-specific alterations in oxytocin and vasopressin expression and oxytocin receptor and vasopressin 1a receptor binding. Early social environment-induced changes in oxytocin and vasopressin systems were associated with changes in several forms of social behavior, including maternal care, aggression, play-fighting, and social recognition. First studies provide evidence for a causal link between altered vasopressin responsiveness and impairments in social recognition in rats exposed to maternal separation and a role for epigenetic mechanisms to explain persistent increases in vasopressin expression in mice exposed to maternal separation. Overall, initial findings suggest that oxytocin and vasopressin systems may mediate early social environment-induced alterations in social behavior. Additional comprehensive studies will be necessary to advance our understanding to what extent changes in oxytocin and vasopressin underlie early social environment-induced alterations in social behavior.This article is part of a Special Issue entitled Oxytocin, Vasopressin, and Social Behavior. © 2011 Elsevier Inc.

This article reports on a small set of community-based participatory projects designed collaboratively by and for survivors directly affected by armed conflict in Guatemala and some of their family members in the North (i.e., in New Orleans, Louisiana, and New England). Local protagonists deeply scarred by war and gross violations of human rights drew on indigenous beliefs and practices, creativity, visual performance arts, and participatory and action research strategies to develop and perform collaborative communitybased actions. These initiatives constitute a people's psychosocial praxis. Through their individual and collective narratives and actions, Mayan and African American women and Latinas perform a psychology from the "two-thirds world," one that draws on postcolonial theory and methodology to retheorize trauma and resilience. These voices, creative representations, and actions of women from the Global South transform earlier, partial efforts to decenter EuroAmerican epistemologies underlying dominant models of trauma that reduce complex collective phenomena to individual pathology, refer to continuous trauma as past, are ahistorical, and universalize culturally particular realities.

Shrekenhamer D.,Chestnut Hill College | Chen W.-C.,Chestnut Hill College | Padilla W.J.,Chestnut Hill College
Physical Review Letters | Year: 2013

We present an experimental demonstration of electronically tunable metamaterial absorbers in the terahertz regime. By incorporation of active liquid crystal into strategic locations within the metamaterial unit cell, we are able to modify the absorption by 30% at 2.62 THz, as well as tune the resonant absorption over 4% in bandwidth. Numerical full-wave simulations match well to experiments and clarify the underlying mechanism, i.e., a simultaneous tuning of both the electric and magnetic response that allows for the preservation of the resonant absorption. These results show that fundamental light interactions of surfaces can be dynamically controlled by all-electronic means and provide a path forward for realization of novel applications. © 2013 American Physical Society.

Kane G.C.,Chestnut Hill College | Alavi M.,Emory University | Labianca G.,University of Kentucky | Borgatti S.P.,University of Kentucky
MIS Quarterly: Management Information Systems | Year: 2014

In recent years, we have witnessed the rapid proliferation and widespread adoption of a new class of information technologies, commonly known as social media. Researchers often rely on social network analysis (SNA) when attempting to understand these technologies, often without considering how the novel capabilities of social media platforms might affect the underlying theories of SNA, which were developed primarily through studies of offline social networks. This article outlines several key differences between traditional offline social networks and online social media networks by juxtaposing an established typology of social network research with a well-regarded definition of social media platforms that articulates four key features. The results show that at four major points of intersection, social media has considerable theoretical implications for SNA. In exploring these points of intersection, this study outlines a series of theoretically distinct research questions for SNA in social media contexts. These points of intersection offer considerable opportunities for researchers to investigate the theoretical implications introduced by social media and lay the groundwork for a robust social media agenda potentially spanning multiple disciplines.

Ransbotham S.,Chestnut Hill College | Kane G.C.,Chestnut Hill College
MIS Quarterly: Management Information Systems | Year: 2011

Firms increasingly turn to online communities to create valuable information. These communities are empowered by new information technology-enabled collaborative tools, tools such as blogs, wikis, and social networks. Collaboration on these platforms is characterized by considerable membership turnover, which could have significant effects on collaborative outcomes. We hypothesize that membership retention relates in a curvilinear fashion to effective collaboration: positively up to a threshold and negatively thereafter. The longitudinal history of 2,065 featured articles on Wikipedia offers support for this hypotheses: Contributions from a mixture of new and experienced participants both increases the likelihood that an article will be promoted to featured article status and decreases the risk it will be demoted after having been promoted. These findings imply that, contrary to many of the assumptions in previous research, participant retention does not have a strictly positive effect on emerging collaborative environments. Further analysis of our data provides empirical evidence that knowledge creation and knowledge retention are actually distinct phases of community-based peer production, and that communities may on average experience more turnover than ideal during the knowledge retention phase.

McDannald M.A.,Chestnut Hill College
Current Biology | Year: 2015

A new study in mice demonstrates that stimulating dorsal raphe serotonin boosts patient waiting but stimulation itself is not rewarding. Dorsal raphe serotonin's unique contribution provides a neural locus for impulsivity and related failures of patience. © 2015 Elsevier Ltd

Bartunek J.M.,Chestnut Hill College
BMJ Quality and Safety | Year: 2011

Background: Intergroup problems among physicians, nurses and administrators in healthcare settings sometimes retard such settings' ability to foster enhanced quality of care. Without knowledge of the social dynamics that generate the difficulties, it is impossible to address some crucial issues that may affect quality initiatives. Methods: This paper reviews three types of dynamics, social identity, communities of practice and socialisation into particular professional identities that affect relationships among professional groups in healthcare settings. Recommendations: A suggestion is made for the creation of cross-boundary communities of practice, socialisation into them and dual, superordinate identities as a means to foster more effective intergroup dynamics and, thus, contribute to a greater quality of care.

Agency: NSF | Branch: Standard Grant | Program: | Phase: FED CYBER SERV: SCHLAR FOR SER | Award Amount: 235.98K | Year: 2016

Chestnut Hill College (CHC) in Philadelphia, Pennsylvania, is designing, developing, and implementing a new degree program to produce cybersecurity professionals, an employment sector with a critical shortage throughout the country. CHCs cybersecurity program will be the first undergraduate degree to be offered in the Philadelphia region. Fifteen students are expected to enroll as new cybersecurity majors each year. The unique factors of the program are: (1) involving industry experts with real-world experience in the creation and implementation of the academic curriculum, (2) wide-ranging infusion of cybersecurity principles in all information technology and computer science curricula offered by CHC, and (3) hands-on skills development with actual hardware and software, not just virtual environments.

The interaction with the cybersecurity community will allow CHC to incorporate state-of-the art applications, based on real world situations, into the development of the new academic program. In addition to assisting with curriculum design, subject matter experts will serve as adjunct teachers. All recruited subject matter experts have extensive backgrounds in cybersecurity and are recognized as leaders in the industry and government agencies, such as the FBI and DHS. The opportunities for students to work with real-world experts will enhance their understanding of the role of cybersecurity in todays complicated technology environment. CHC will share the process of creating the new curriculum through the academic--industry expert partnership with other colleges throughout the nation. In addition, the team will apply for the designation as a National Centers of Academic Excellence (CAE) program, jointly sponsored by The Department of Homeland Security (DHS) and The National Security Agency (NSA).

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