4,583 Works

Fail Better: The Aesthetics of Contemporary Criticism

Though literature and literary study have needed defense for most of their respective histories, the current crisis in academic literary study and the humanities more generally has forced scholars into the uncomfortable position of selling their disciplines and simultaneously warning students about the risks involved in earning what the dominant public considers to be "useless" degrees. The paradox, of course, is that dissuading would-be studiers is both ethical and destructive: it is necessary to inform...

Natural Play, Healthy Play: Environmental Determinants of Young Children's Outdoor Physical Activity

The prevalence of obesity among young children has markedly increased over the past two decades, with more than one-third of American preschoolers now overweight or obese and at risk for lifelong health problems. Physical activity is a recommended obesity prevention strategy, yet preschoolers typically fail to meet recommended daily physical activity guidelines, spending just 15 minutes engaged in moderate to vigorous physical activity, compared to six sedentary hours daily. Unstructured play in settings with varied...

PARTNERS AS SUPPLIERS FOR INNOVATION: THE DEVELOPMENT OF NEW SERVICES BY AMERICAN DESTINATION MARKETING ORGANIZATIONS

Extant literature identified the value of innovative firm behavior for organizational success for manufacturers and service providers (Christensen, 1998; Damanpour, 1991; de Brentani, 1993; Easingwood, 1986; Schumpeter, 1939; Senge, 1994). Increasing complexity of consumer markets, information technologies and an economic environment that forces organizations to rethink their business strategies are especially characteristic for service providers, making the development of new services an essential, but also risky task. A series of organizational conditions, such as a...

HETEROGENEITY OF NEUROPSYCHOLOGICAL PROFILES IN OLDER ADULTS WITH VASCULAR DISEASE: A LATENT CLASS ANALYSIS APPROACH

Despite the common co-occurrence of the two main pathological processes in aging, vascular disease and Alzheimer's disease (AD), they are often examined in isolation. Increasing evidence of a mutually enhancing relation between these processes is supported by common risk factors including hypertension and diabetes. Therefore, both processes must be considered in characterizing the cognitive performance of older adults, particularly given high rates of vascular disease. The heterogeneity of cognitive deficits has not been systematically examined...

Using Geophysics and Terrestrial LiDAR to Assess Stormwater Parameters in Vacant Lots in Philadelphia

Managing stormwater volume and quality has become an important issue in urban hydrology. Impervious cover associated with urbanization increases surface runoff volumes and degrades the water quality of urban streams and rivers. Cities with combined stormwater and sewer lines such as Philadelphia, have been tasked with decreasing runoff volumes to help reduce combined sewer overflows and improve the water quality of local waterways. The Philadelphia Water Department uses the Environmental Protection Agency’s Storm Water Management...

Regulation of cellular glucose metabolism by HIV-1 infection

Regulation of Glucose metabolism is known to play an important role in pathogenesis of many diseases. Primarily because deregulation of this metabolic pathway can lead to either apoptosis or extended life span of the cells involved. Viruses are parasitic in nature, they utilize the host cellular pathways to support their own progeny; hence it is expected that viruses would regulate the central glucose metabolism of infected host cells. Human immunodeficiency virus type 1 (HIV-1) causes...

EMERGENCY DEPARTMENT CROWDING: EXPLORING BIAS AND BARRIERS TO EQUITABLE ACCESS OF EMERGENCY CARE

The emergency department (ED) has often been considered the safety net of the American healthcare system. It earned this distinction because every person in the United States has access to a medical screening exam and stabilization at an ED regardless of their ability to pay. Unfortunately, over the past several decades, decreasing numbers of EDs and inpatient beds, coupled with increasing rates of ED usage, has led to crowding of EDs across the country. Crowding...

Teaching Developmental English: Perceptions and Motivations of One Adjunct Faculty Group

This qualitative study describes members of the Liberal Arts/English adjunct faculty at one mid-Atlantic urban community college (MAUCC), their perceptions of the organizational climate of their program, and their satisfaction and motivation patterns. The study was designed as a case study focusing on one MAUCC department. Adjunct faculty members constitute a growing percentage of the teaching force in higher education institutions--particularly in community colleges (Eagan, 2007; National Center for Educational Statistics, 2011). With rising economic...

My Name is a Blackbird: Dancing Toward a Productive Ontology of Change

The dissertation is a theoretical autobiography weaving personal narrative, reflective practice, and engagement with extant sources, emphasizing somatic innovators and French philosophers Giles Deleuze and Felix Guattari. Rhizomatically structured, the dissertation takes as its locus of content My Name is a Blackbird, an extended choreographic project and series of performances I enacted between 2006 and 2010. Research begun during Blackbird further bled into subsequent years of solo and ensemble dance practice and performance, teaching, and...

A Model of Workplace Anger Response Cycles

Anger is considered a basic emotion, evoked typically by something that interferes with the person's execution of plans or attainment of goals, as well as the perception of harm and unfair circumstances or behavior (Shaver, Schwartz, Kirson, & O'Connor, 1987). Research examining anger is largely focused on negative individual and organizational outcomes, such as raised blood pressure and heart disease, decreased productivity, reduced job satisfaction and increased job stress, and aggressive responses (Geddes & Callister,...

Entity Information Extraction using Structured and Semi-structured resources

Among all the tasks that exist in Information Extraction, Entity Linking, also referred to as entity disambiguation or entity resolution, is a new and important problem which has recently caught the attention of a lot of researchers in the Natural Language Processing (NLP) community. The task involves linking/matching a textual mention of a named-entity (like a person or a movie-name) to an appropriate entry in a database (e.g. Wikipedia or IMDB). If the database does...

HYPOCRETIN/OREXIN AND THE VENTRAL MIDBRAIN: TOPOGRAPHY AND FUNCTION ASSOCIATED WITH PSYCHOSTIMULANT-TAKING AND AFFECT

Abuse of psychostimulants including cocaine and new synthetic formulations remains an international public health problem and economic burden. Addiction develops consequential to positive and negative drives that underlie “getting” and “staying” high. Dopamine (DA), arising from ventral tegmental area (VTA), projects to ventral striatal targets to encode reward signals and reward prediction. Mesolimbic DA is implicated in both the immediate rewarding effects of psychostimulants, and its hypoactivity underlies negative affect as drug levels decline. Accordingly,...

HYPERHOMOCYSTEINEMIA ACCELERATES STROKE-INDUCED BRAIN INJURY VIA PROMOTING ENDOTHELIAL ACTIVATION AND INFLAMMATORY CELL INFILTRATION: THE ROLE OF ICAM1-MEDIATED NEUTROPHIL AND MONOCYTE INFILTRATION

Background: Epidemiology, clinical trials and meta-analysis studies have established that Hyperhomocysteinemia (HHcy) is an independent risk factor for stroke. However, the exact molecular mechanism underlying the HHcy-induced risk of stroke is unclear. Our study aims to investigate the role of HHcy in stroke. Methods and results: We established a mice mode of focal ischemic stroke, termed transient Middle Cerebral Artery Occlusion (tMCAO) and conducted surgery on a mice model of HHcy (plasma homocysteine level ~150μM),...

DESIGN, DEVELOPMENT AND APPLICATION OF ANALYTICAL APPARATUSES FOR LASER ELECTROSPRAY MASS SPECTROMETRY ANALYSIS

With any analytical technique, there are inherent deficiencies that can be improved upon for optimizing sensitivity, ease of analysis, reproducibility, etc. The unifying goal of this work is the design and implementation of apparatuses to improve the capabilities of laser-electrospray hybrid based mass spectrometry techniques, with laser electrospray mass spectrometry (LEMS) serving as the experimental subject for projects discussed in this thesis. In LEMS, ~60 fs laser pulses centered at 800 nm are used to...

HEAT PUMP AND AIR CONDITIONING SYSTEM ANALYSIS BASED ON VARIABLE SPEED COMPRESSOR

Experiments were carried out to investigate the effect of ambient air temperatures on the heat pump performance using a variable speed compressor. Ambient air temperatures were varied from 40 to 60 °F to simulate different seasons. The compressor frequencies of 45 Hz, 50 Hz, 55 Hz, and 60 Hz were studied to determine the optimal frequency under various heating loads. The investigation was carried out by showing the compressor power input, heating output, and coefficient...

The Art of the Airport: Using Public History and Material Culture to Humanize and Interpret the American Airport

In recent decades, government officials and social scientists have increased their study of American airports and their relationship to security and national defense. Despite the growing attention, airports remain interpreted primarily as homogenized, transient spaces deprived of any culturally unique qualities. This thesis will study American airports as historical artifacts with significant layers of meaning. If contextualized and situated within a broader historical framework, then airports expose larger trends throughout American history including resistance to...

DEGREES OF AUTHENTICITY AT WORK: REFUTING THE EITHER/OR PARADIGM

Some would argue that authenticity is a characteristic that is encouraged by managers and leaders in the workplace. But what does it mean to be “authentic” at work today? Does it mean bringing your “whole self” to work every day? And do people want to do that? Should they? And are there limits to their authentic expression? To better understand the concept of authenticity in the workplace, two studies (one qualitative – semi-structured interviews and...

Underground Banks: The Perspectives of Chinese Illegal Immigrants in Understanding the Role of Chinese Informal Fund Transfer Systems in the United States

The financial link in the process of illegal immigration is a little researched domain in the literature. This research is the first exploratory study to examine the role of Chinese-operated informal fund transfer systems in the U.S. in the lives of Chinese illegal migrant workers and their families who remained in China. The primary source of data was in-depth interviews with thirty illegal immigrants in New York City and Philadelphia. The findings show that the...

Learning Top-N Recommender Systems with Implicit Feedbacks

Top-N recommender systems automatically recommend N items for users from huge amounts of products. Personalized Top-N recommender systems have great impact on many real world applications such as E-commerce platforms and social networks. Sometimes there is no rating information in user-item feedback matrix but only implicit purchase or browsing history, that means the user-item feedback matrix is a binary matrix, we call such feedbacks as implicit feedbacks. In our work we try to learn Top-N...

An ex post facto evaluation of the Philadelphia GunStat model

In January of 2012, Philadelphia Mayor Michael Nutter outlined the crime fighting measures that his administration would pursue during his second term as mayor. Included was a plan to introduce a multi-agency crime reduction program, which Philadelphia Police Commissioner Charles Ramsey and District Attorney Seth Williams would co-chair, called GunStat. GunStat was described as a collaborative effort to reduce gun violence through (1) identifying locations with a high incidence of violent crime, (2) pinpointing violent...

SPEAKING ABOUT RACE: BIOPOWER AND RACISM IN THE VIDEOGAME LANDSCAPE

This dissertation explores how discourses surrounding race and economics inform the way in which videogame creators understand their world and use that understanding to create content. Employing a Foucauldian discourse analysis, the content of two videogames, Skyrim and Max Payne 3, were analyzed. The analysis of Skyrim revealed that race is constructed as an inherently biological phenomenon. Moreover, culture is constructed as emerging from biology. The analysis of Max Payne 3 revealed that capitalism grounds...

Analysis of the Inflammatory and Degenerative State of Osteoarthritic Joints

Development of disease modifying osteoarthritis drugs has been hindered by an inability to diagnose osteoarthritis prior to structural changes and by animal models that cannot predict human responses to disease modifying interventions. The first part of this dissertation evaluated if a novel nonsurgical-voluntary animal model was capable of producing joint inflammation and degeneration as well as if ibuprofen could attenuate these outcomes. Spraque-Dawley rats were divided among 7 groups. The four experimental groups consisted of...

Citizenship, support, and fit: exploring the generalizability of these concepts to the occupational domain

This study explored the generalizability of citizenship behavior, support, and fit to the occupational domain. In doing so, arguments to include occupation constructs in organizational analyses were offered, reliability and validity testing of the occupation constructs was performed, and relationships among the occupation constructs, their respective organizational counterparts, occupation-related outcomes, and organization-related outcomes were explored. Results of the assessments demonstrated that occupational citizenship behavior, perceived occupational support, and person-occupation fit are distinguishable from their organizational...

An Evaluation of Meaningful Learning in a High School Chemistry Course

This study utilized an action research methodology to examine students' understandings of science knowledge, and meaningful learning using the SLD (Science Lecture Demonstration) and laboratory instructional method in a high school chemistry classroom. This method was a modification of the Science Lecture Demonstration Method as developed by Majerich and Schmuckler (2004, in press), the modification due to the addition of a laboratory component. The participants in this study represented a convenience sample which included one...

Relationship Between Leisure Sport and Exercise Participation and Psychological Benefits for Horsemen

This study was a description of horsemen's perceived psychological benefits and liabilities derived from leisure sport and exercise participation. The horsemen that participated in this study were active trainers or grooms who stabled their horses at a training center. Sixty-six horsemen completed the Tennessee Self-Concept Scale: 2, Stress Profile, and this researcher's inventory of horsemen's activities entitled Samaha Horsemen's Activities Questionnaire (SHAQ). Seven horsemen were interviewed to obtain qualitative data. Two of the seven horsemen...

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