University of Charleston

About: University of Charleston is a education organization based out in Charleston, West Virginia, United States. It is known for research contribution in the topics: Pharmacy & Health care. The organization has 288 authors who have published 357 publications receiving 8241 citations. The organization is also known as: Morris Harvey College & UC.

Identifying potential keystone species from field data – an example from temporary ponds

Abstract: Identifying keystone species is essential for understanding community dynamics and preserving species richness. However, few studies have used quantitative, a priori methods to identify potential keystone species. Species known to act as keystones in North Carolina (NC) temporary ponds (Notophthalmus viridescens, eastern newt, and Siren intermedia, lesser siren) were tested to see whether they played the same role in similar habitats in South Carolina (SC). Newts and sirens had no effect on anuran species richness in SC. Instead, another salamander (Ambystoma talpoideum, mole salamander) absent from the NC ponds was identified as a strong keystone in SC. It functioned independently of environmental factors and the densities of other predators. Larval dragonflies (Tramea carolina, Carolina saddlebag) were identified as weak, context-dependent keystones in SC, supporting anuran richness in isolated ponds with very low pH. The results suggest that the identity of keystone species varies, even in similar habitats within a physiographic region.

Self-similarity in inverse limit spaces of the tent family

Abstract: Taking inverse limits of the one-parameter family of tent maps of the interval generates a one-parameter family of inverse limit spaces. We prove that, for a dense set of parameters, these spaces are locally, at most points, the product of a Cantor set and an arc. On the other hand, we show that there is a dense Gδ set of parameters for which the corresponding space has the property that each neighborhood in the space contains homeomorphic copies of every inverse limit of a tent map. In 1967, R. F. Williams ([10]) proved that hyperbolic one-dimensional attractors are inverse limits of maps on branched one-manifolds. These attractors have the solenoid-like property of being everywhere locally homeomorphic with the product of a Cantor set and an arc. Also, for dissipation parameter near zero, most of the full attracting sets for maps in the Hénon family are homeomorphic with inverse limits of unimodal maps of the interval ([1]). Except at finitely many points (the points of a stable periodic orbit), these sets are locally homeomorphic with the product of a Cantor set and an arc (see the comment following Theorem 1). Computer-generated pictures, at first glance, suggest that other one-dimensional (but non-hyperbolic) attractors might have a similar local structure. In particular, the transitive Hénon attractors appear to be, at most points, locally the product of a Cantor set and an arc. However, ‘blowing up’ computer pictures of these attractors usually indicates the presence of ‘hooks’ in the midst of regions that, under less scrutiny, look like a Cantor set of nearly parallel arcs. In this paper we consider the local topological properties of a one-parameter family of conceptual models for the Hénon attractors, inverse limits of tent maps. We find the following: for a dense set of parameters, the inverse limit space is, except at finitely many points, the product of a Cantor set and an arc (Theorem 1). However, for a dense Gδ set of parameters, the inverse limit space is nowhere locally homeomorphic with the product of a Cantor set and an arc. In this second case, the inverse limit spaces display a remarkable form of self-similarity and local recapitulation of the entire family: not only does every open set in each space contain a homeomorphic copy of the entire space, each open set also contains a homeomorphic copy of every other inverse limit space appearing in the tent family (Corollary 6). In a forthcoming paper, we prove that the set of parameters for which this holds has full measure. Received by the editors May 16, 1995. 1991 Mathematics Subject Classification. Primary 54F15, 58F03, 58F12. The first author was supported in part by NSF-DMS-9404145. c ©1996 American Mathematical Society

Viewing Children's Exposure to Intimate Partner Violence Through a Developmental, Social-Ecological, and Survivor Lens: The Current State of the Field, Challenges, and Future Directions.

Abstract: Although some children exposed to intimate partner violence (IPV) demonstrate resilience, the population-level health consequences of exposure across the lifespan and the related social and economic costs of such exposure are enormous. Using a developmental and social-ecological perspective, this article summarizes the literature examining the effects of IPV exposure on children, reviews key underlying mechanisms, and suggests the use of a public health prevention approach. It presents a discussion of next steps and identification of key challenges. One of the authors, a survivor of child exposure to IPV, presents a vignette that augments key sections and highlights children's resilience.

Caring relationships in science classrooms: A symbolic interaction study

Abstract: This symbolic interaction study was designed to identify and discover key components about caring science teachers. Grounded theory was generated that emphasizes the notion that caring is important in today's schools and provides insight into what happens in science classrooms. A key pattern that emerged regarding science teachers who are perceived to be caring is that they build a variety of relationships. The kinds of relationships described as caring by the teachers in this study include teacher-student, student-student, and teacher-content. The interaction and integration of these three kinds of relationships results in teacher-student-content relationships. The emergence of relationships and illustrations of the importance of these relationships is described herein. © 1996 John Wiley & Sons, Inc.

Credentialing of pharmacy technicians in the USA.

Abstract: Objective This review will compare the USA and UK regarding pharmacy technicians' roles, it will summarize the current roles and responsibilities of pharmacy technicians in the USA, public perception of pharmacy technicians, pharmacy organizations' perspectives on pharmacy technician credentialing, academic programmes for pharmacy technicians, accreditation of pharmacy technician programmes, pharmacy technician certification exams and differing perspectives on the push for standardized technician training It will conclude with observations regarding the importance of standardized pharmacy technician training Methods Articles were identified via searches of PubMed and IPA from inception to November 2010 related to credentialing of pharmacy technicians Search terms included pharmacy technician, pharmacy technician certification, pharmacy registration, technician education and technician requirements Articles describing the roles and responsibilities of a technician, public perception of technicians, demographics, certification processes and the future of technician roles were included An Internet search was also performed to identify articles in the lay press related to this topic Key findings Providing a pharmacy technician with proper training and education is necessary for operating a successful pharmacy In the USA, mandating a national standardized training programme is the source of the debate Current rules and regulations regarding the training and education needed for a pharmacy technician vary from state to state in the USA Attitudes of technicians towards standardized training may be difficult to change Conclusion This paper provides a review of pharmacy technicians' roles and responsibilities across different pharmacy settings Although the literature provides some insight, more studies are needed to assess the value and impact of the knowledge and skills possessed by certified pharmacy technicians with standardized training compared with technicians with site-specific or limited training