WorldCat Identities

OhioLINK Electronic Theses and Dissertations Center

Overview
Works: 9,425 works in 9,452 publications in 1 language and 11,828 library holdings
Genres: Academic theses  Case studies 
Classifications: BV4637,
Publication Timeline
.
Most widely held works by OhioLINK Electronic Theses and Dissertations Center
Information culture and belief formation in religious congregations by Darin Freeburg( )

1 edition published in 2013 in English and held by 63 WorldCat member libraries worldwide

This qualitative study investigated the information culture and beliefs within two United Church of Christ congregations in Northeast Ohio. One congregation was Open and Affirming (ONA), and one congregation was not. ONA refers to a congregation's decision to be listed as a place where LGBT individuals--in particular--are welcomed and accepted. Using a purposive sampling technique, 8 focus groups of 4-8 participants each were asked to discuss content derived from three research question areas: participant beliefs, information that participants used to inform these beliefs, and how this information was used. Analysis found that both congregations espoused the superiority of their beliefs about inclusivity, thus creating a paradox whereby their inclusivity involved excluding beliefs of exclusion. Because the ONA congregation preferred a personal expression of belief, they were more comfortable with the potential divisions caused by this paradox than the non-ONA congregation, which preferred a communal expression of belief. Analysis also found that most participants relied heavily and placed great authority in information from internal sources, e.g., prayer, meditation, and emotion. The ONA congregation reflected the presence of more unique information, indicating that they approached the Bible and other common religious information critically and with more freedom to come to different conclusions than fundamentalists and biblical literalists. Despite these differences in belief expression and information type, the analysis found that both groups showed evidence of Chatman's Small Worlds theory. First, participants showed evidence of unmet information needs. Many lacked confidence in the ability to articulate personal beliefs. Second, participants noted the presence of long-term attendees who determined the relevancy of incoming information. Finally, participants tended to guard against disclosing information about personal problems to other congregants, preferring to anonymously seek out answers. The research highlights the social nature of belief formation and the impact of religious tradition, pastoral sermons, and external information on these beliefs. It contains important implications for pluralistic communication and the social nature of organizational legitimization. It extends the literature on belief formation and information science by developing mid-range theories about the processes by which individuals in religious communities use information to form beliefs
The nature of cognitive chunking processes in rat serial pattern learning by Karen E Doyle( )

1 edition published in 2013 in English and held by 61 WorldCat member libraries worldwide

Rats appear to use a cognitive chunking strategy during the presentation of an interleaved pattern where two distinct subpatterns are interleaved within one another (Fountain, Rowan, & Benson, 1999) . However, it is unclear how these distinct subpatterns are cognitively represented. Experiment 1 was designed to determine the extent to which rats may be chunking the subpatterns in an interleaved pattern. Groups were presented with a target subpattern (123456) akin to the second experiment of Fountain et al. (1999), and an interleaved subpattern (787878) which was manipulated between groups. Following acquisition, groups were transferred to a new interleaved subpattern (878787). Results from both initial acquisition and transfer conditions indicate that although the presence of pattern structure and cueing did improve initial pattern acquisition, rats did not solely employ a chunking strategy. Experiment 2 was designed to replicate Experiment 1 and to further explore possible interleaved pattern learning strategies. Rats were presented a target subpattern (123456) and a manipulated interleaved subpattern. Subpattern manipulations included changes in structure, cueing, and complexity of the interleaved subpattern. A transfer presented rats with the same interleaved pattern in a novel context. Results replicated Experiment 1 as structure and cueing manipulations affected interleaved pattern acquisition. Complexity of the subpattern did not show a consistent effect. Pattern performance was also affected during transfer to a novel context. The results from these experiments indicate that rats may be using a complex cognitive strategy to acquire and produce interleaved patterns. Rats may be combining several strategies including ordinal position, conditional discrimination learning, rule abstraction and chunking in order to complete this difficult task
Question development by individuals in therapeutic assessment : does it result in more positive outcomes? by Lesley Ann Friedhoff( )

1 edition published in 2013 in English and held by 61 WorldCat member libraries worldwide

In Therapeutic Assessment individuals are given feedback based on questions developed prior to administration of psychological testing. It is hypothesized that feedback delivered in this manner results in greater therapeutic outcomes than standard feedback administration. This study compared the therapeutic outcomes of individuals who received Minnesota Multiphasic Personality Inventory Second Edition - Restructured Form (MMPI-2-RF; Ben-Porath & Tellegen, 2008) feedback based on personally-developed questions to the outcomes of individuals who received standard MMPI-2-RF feedback. The study utilized a two (group) by three (time) design; the sample consisted of 39 undergraduate university students (17 men, 22 women). Nineteen participants received feedback based on their questions, while 20 participants received standard feedback. Symptoms of distress and self-esteem were assessed prior to MMPI-2-RF administration, immediately after MMPI-2-RF feedback, and two weeks after feedback. Participants also rated their perceptions of the assessment process at the final two time points. Results indicated that all participants, regardless of feedback style, experienced statistically significant decreases in anxiety and depressive symptoms two weeks after feedback. There were no differences in self-esteem or perceptions about the assessment process between groups or across time. This study provides further evidence of the therapeutic utility of feedback, but does not suggest that basing feedback on client-developed questions results in a greater magnitude of therapeutic benefits than standard feedback. An additional finding was that all participants were engaged in the assessment process as evidenced by a 100 percent valid MMPI-2-RF profile rate, which speaks to the importance of making individuals aware they will receive feedback prior to testing as it may lead to increased engagement in the assessment process
Success of developmental readers : an examination of factors affecting attrition and institutional practices which support retention by Katherine F O'Brien( )

1 edition published in 2013 in English and held by 55 WorldCat member libraries worldwide

Students who enter higher education requiring reading remediation have poor institutional persistence. This study examined the course success and first-year institutional persistence of six women enrolled in a developmental reading course at a regional campus of a state university. Data sets were comprised of classroom observation, review of academic records, and interviews with students and their instructor. Three of the women were successful in the course while three were not. The cross-participant analysis revealed five factors associated with student success and institutional persistence. Successful students had more frequent attendance and were more engaged with their professors outside of class than unsuccessful students. Those who were recent high school graduates were less likely to succeed than students who had a gap between high school and college. While adult responsibilities such as raising children impacted students' progress, these factors did not affect success in developmental reading. Most notably, students who were successful in the course and persisted through the first year had support systems both off-campus and on-campus including a college employee
A feminist case study of five women preschool practitioners' engagement in the collaborative inquiry process by Felicia V Black( )

1 edition published in 2013 in English and held by 55 WorldCat member libraries worldwide

The purpose of this feminist case study was two-fold: (1) to describe the ways that Collaborative Inquiry (CI) can be proposed as a counter-discourse of professional development that acknowledges the multiple forms of personal and professional knowledge among five women preschool practitioners, and (2) to explore alternative constructs of the preschool practitioner that seek to disrupt the preschool teacher/child care worker dichotomy. Data were collected through transcripts of CI group meetings, semi-structured participant interviews, selected researcher field notes, and participant observations during select classroom visits and meetings with participants. Feminist and poststructural perspectives set forth by Butler (1990), Osgood (2010), and Foucault (1977), among others, were utilized to interpret the data. Findings from the CI process included the importance of conversation and 'small talk,' informal and shared readings, the use of student documentation and artifacts, and collaboration as important tools and processes of the group. Findings from the case included the positioning of the Center and its staff within a business discourse. Data revealed how these preschool practitioners complied with and/or negotiated the discursive practices of power relations, regulation, normalization, and surveillance, as the Center participated in the voluntary Step Up to Quality accreditation process to increase Center funding
Electromagnetic field determination of antenna systems in complex structural environments by the spherical harmonic interface procedure by Jeanne T Rockway( )

1 edition published in 2005 in English and held by 48 WorldCat member libraries worldwide

Many modern antenna systems radiate in a complex structural environment such as a ship, an aircraft, or the rooftop of a building. Usually, the computation of the direct fields from the antenna is straightforward. However, the calculation of the fields scattered by the structural environment is often more difficult, and requires far more computational resources. It is therefore important to develop a procedure, which can utilize the best techniques in combination with one another, for the calculation of the radiating fields of these modern antenna systems in an accurate manner. Typically, electromagnetic codes are available to analyze both the direct radiation from the antenna and the scattering from the structural environment. The issue to be addressed is an efficient method for transferring information from the antenna code to the environmental code
A numerical and experimental investigation for the modification and design of a Gerolor using low viscosity fluids by Frank Horvat( )

1 edition published in 2012 in English and held by 47 WorldCat member libraries worldwide

A Gerolor or Gerotor is a positive displacement device which typically functions as either a pump or a motor. This variation in energy input depends on whether the working fluid is driving or being driven by a set of meshing internal gears connected to an input/output shaft. This work proposes a method for the design and performance analysis of a Gerolor pump using low variable viscosity (2-8 cP) oil. The design methodology will detail the modification and redesign of internal rotor/stator components for a commercially available Gerolor. These proposed modifications are limited to (i) rotor profile design and (ii) enhancement of the fluid film layer for seven circumferentially spaced rollers. The two operational parameters used for the experimental work are (i) oil viscosity and (ii) pump flow rate. The experimental work utilizes a test loop specifically designed for the use of multiple original and modified Gerolor test heads. This test loop will function as a means to compare any of the proposed modifications and allow insight into the internal components functionality. One of the studied test heads was remanufactured out of acrylic and used for qualitative purposes to determine component function and to visualize flow paths internally and identify leakage sources and paths. A transient analysis was performed numerically using a commercially available computational fluid dynamics (CFD) package ANSYS CFX, which couples both a fluid solid interaction (FSI) with the full three-dimensional Navier-Stokes equations for an incompressible and constant property, Newtonian fluid. The purpose of this numerical simulation is to model and validate the leakage paths identified experimentally and to model the transient orbit of the inner rotor with respect to the stationary stator. The geometry for this simulation will use one of the experimental pumps where the internal rotor profiles will be created using an in-house developed GerolorGeometryGen (G³) code. The numeric results to be presented will contain both transient velocity and pressure development within the Gerolor
Strategic objectives, alignments, and firm performance by Kun Chen( )

1 edition published in 2014 in English and held by 47 WorldCat member libraries worldwide

This dissertation is on mergers and acquisitions (M&A). Two studies are proposed to examine what factors impact performance and partner selection in the context of M&A. Event study methodology is used to capture the capital market effects of announcements of M&A in both studies. Four hundred and eighty two announcements are identified from 1980 to 2011 from the SDC M&A database. Other data sources include CRSP and COMPUSTAT. The Wall Street Journal and PR Newswire are used to specify the announcement dates. Previous research examines the impact of corporate strategy on performance. Study one extends previous research by introducing the notion of alignment between corporate strategy and strategic objective. Corporate strategy is of two types -- value creation (emphasis on R&D) or value appropriation (emphasis on marketing). Strategic objectives are operationalized as either enhancement or diversification. The study proposes that firms whose corporate strategies are aligned with strategic objectives are better performers than those that are not aligned. Empirical findings based on capital market reactions strongly support this proposition. Study two accesses the effect of capability alignment between acquiring and acquired firms. Capability alignment between strategic partners is operationalized along marketing and R&D. Empirical results show that the capital market favors acquiring firms that have strong R&D capability. Although technological innovation is a motivating factor in a firm's acquisition, capital market actually favors acquiring firms that have weak R&D capability but strong marketing capability and acquired firms that have weak R&D but strong marketing capability for their enhancement objective
Invasive plants and native amphibians : the implications for amphibian conservation in Eastern North America by Lisa Regula Meyer( )

1 edition published in 2013 in English and held by 47 WorldCat member libraries worldwide

Humans introduce non-native plants to new areas at an increasing rate with the increased movement across the globe. These invasive species can become mono-cultures and extremely different from the native floral community. Amphibians, at the same time, are facing global declines with approximately one-third of all amphibians threatened or endangered. Due to the importance of amphibians as prey items for many vertebrates including small birds, mammals, and reptiles, and also predator controls over many invertebrates, including some pest species, the decline of amphibians has large implications for many environments. This study looks at a range of interactions between two invasive plants (Typha angustifolia and Phragmites australis) and two native anurans (Lithobates clamitans and Lithobates catesbeianus). As ecosystem engineers, plants form the basis of many communities, and sculpt the physical environment by adding complexity to the earth's surface. They also add chemical constituents either actively or passively too ward off other competitors. This change in the environment on both the chemical and physical level leads to complex possibilities for a changed plant community to impact the rest of the ecosystem, including amphibians. I focus on the physical changes by looking at behavior of amphibians in these invasive plant mono-cultures and non-invaded controls, and their appearance in invaded and non-invaded wetlands, both constructed and naturally occurring. On the chemical side of the matter, I monitor water chemistry measures in natural and constructed wetlands that are either lacking invasive plants or have a substantial presence of these plants, and correlate those measures with tadpole growth and survival
The effects of soil properties and clay minerals on the bioremediation of soils contaminated with pentachlorophenol by Esther A Don-Pedro( )

1 edition published in 2005 in English and held by 47 WorldCat member libraries worldwide

"There are over 400 old wood preservative sites scattered all over the United States of America with established pentachlorophenol (PCP) contamination of soils, ground and surface water. PCP is a very toxic, high molecular weight chlorinated organic compound. The role of the physical properties of soil on the bioremediation of PCP was investigated. When compared to soil excavation and incineration, bioremediation, the breakdown of contaminants by bacteria, is a cost effective, less intrusive remediation method. However, this method is limited by our inability to predict its effectiveness in the field because biodegradation efficiency is site specific and dependent on local hydrology, soil characteristics and indigenous microbial activity. Experimental results showed that clay minerals and certain soil properties play a very important role in sorption and desorption of pentachlorophenol and, subsequently bioremediation of the compound. The Colorado soil sample, which was obtained from a wetland, contained only 9% clay but was shown to have great sorbing power (about 80%) when compared to the other soils like the Iowa soil which had almost the same amount of clay (7%). The ability of the Colorado soil to be able to sorb more of the PCP than the Iowa soil could be attributed to the presence of a swelling clay, iron and aluminum oxides and soil organic matter it contains as shown in the results from the pshsiochemical properties analysis. The Colorado, Iowa and Ohio samples were used for the biodegradation experiments and the Colorado soil showed the least overall degradation (10%). This was expected based on the sorption and desorption results, which showed the Colorado soil desorbing only 2% of the contaminant, and since bioavailability is important for biodegradation, less desorption ultimately would affect degradation. The Ohio soil had the most degradation (about 60%) by the end of the third week and the Iowa soil had about half that of the Ohio soil (about 34%). Therefore, the contribution of clay minerals and soil properties such as SOM, exchangeable iron and aluminum oxides, organic carbon and grain size should be taken into account in the understanding of contaminant availability to biodegradation."--Abstract
Do feature importance and feature relevance differentially influence lexical semantic knowledge in individuals with aphasia? by Lucia Scheffel( )

1 edition published in 2013 in English and held by 47 WorldCat member libraries worldwide

This study investigated two classifications of semantic features, feature importance and feature relevance, to verify if they differentially influence lexical semantic knowledge in individuals with aphasia. Feature importance is defined as "how important a feature is in defining a concept" (Hampton,1979), while feature relevance represents the "core meaning of a concept" (Sartori, Lombardi & Mattiuzi, 2005). A sorting task was used with 20 volunteer participants with aphasia to investigate the semantic processing involved in the association of semantic features with nouns. A corpus of 18 nouns was displayed in front of each participant in groups of three along with a card containing the word "UNRELATED." The participants were given a deck of 18 cards containing features corresponding to the nouns and to the unrelated category, and were verbally instructed to sort the deck of cards into each of the four designated piles. The semantic features on the cards were rated as high, mid and low importance (HI, MI, LI) and high, mid and low relevance (HR, MR, LR). Analysis was completed using a two-way between-subjects ANOVA to determine was whether the mean scores at the three different levels (e.g., low, mid and high) of importance and relevance differed, and to analyze if there was an interaction between the two classifications. The participants were able to assign high importance features with nouns more accurately than they did mid and low importance features. Feature relevance did not differentially influence noun-feature association. These results indicated that the ability of individuals with aphasia to accurately associate features with nouns is influenced by levels of feature importance. In conclusion, this study found that individuals with aphasia are more cognitively sensitive to high level versus low level feature importance and the effect does not extend to a mid level of importance. The study also demonstrated that the levels of feature relevance did not differentially influence the ability of individuals with aphasia to associate semantic features with their appropriate nouns. Potential clinical implications and study limitations were discussed
Acoustic based condition monitoring by Chia-Hsuan Shen( )

1 edition published in 2012 in English and held by 47 WorldCat member libraries worldwide

Acoustic/vibration signal has traditionally benefited the condition monitoring of machinery. It can be further implemented in other field of applications as long as patterns associated with the conditions can be established. The dissertation consists of two areas of study, namely the gearbox condition monitoring and heart sound based diagnosis. The gearbox in a helicopter is a critical component with little response time prior to the failure. Therefore constant monitoring is necessary to prevent catastrophes. The developments of indicative parameters for condition monitoring of the gearbox remains to be a research of interest. Approximately more than 90% of heart murmurs are diagnosed to be normal and can be effectively determined by cardiac auscultation alone. However, current cardiology practices have been heavily relying on the expensive imaging equipment. With ever increasing national medical cost, a more optimized use of the high tech equipment is necessary. From the different sources of the acoustics, the objectives of the present dissertation concerned the analysis, the development of feature/parameter extractions, and/or the development of a pattern classifier for condition monitoring. In the gearbox condition monitoring, the vibration signatures of different gear and bearing damage scenarios were used to develop potential indicative parameters to detect gearbox faults. In heart murmur diagnosis, the study introduced a modular approach to computer-aided auscultation (CAA), where an alternative murmur characterization based on their acoustic qualities could be used. The analysis, the numerical characterizations, and the classifications for different types of the acoustic quality of murmurs as well as the classifications of the innocent murmurs and the pathological murmurs were carried out. In each of the topics of interest, analysis was performed in the time domain, the frequency domain and the time-frequency domain to acquire insights into the nature of the acoustic patterns under different conditions. Techniques such as the Fourier Transform (FT), the Continuous Wavelet Transform (CWT), and the Wigner-Ville distribution (WVD) were used for analysis for different signal domains. Possible features were than extracted to classify different representing conditions. The types of parameters/features extracted include the FT based features, the CWT based features, the Discrete Wavelet Transform (DWT) based features, and the Singular Spectrum Analysis (SSA) based features. The suitable features were selected based on techniques such as the Receiver Operating Characteristic (ROC) curve analysis and the Sequential Floating Forward Selection (SFFS) algorithm. The pattern classifiers used in the present dissertation include the K-Nearest Neighbor (KNN) classifier and the Classification and Regression Trees (CART). In gearbox condition monitoring, time-frequency analysis based on the CWT was considered a better visual examination solution among other considered techniques. Parameters based on the frequency components associated with the operating conditions were developed for damage identifications. In heart murmur diagnosis, different heart murmur qualities were quantitatively characterized by four extracted parameters based on their frequency characters and signal structure features. The parameters were able to correlate with the hemodynamics and physiology of the heart. Using the ROC curve analysis and the KNN classifier, an overall average accuracy of 87% was achieved. By using Sequential Floating Forward Selection (SFFS) and CART classifier, the average classification performance of different murmur qualities of up to 92% could be achieved. 90% accuracy was achieved for innocent murmur classification
Ecological, taphonomic, and paleoecological dynamics of an ostracode metacommunity by Andrew V Michelson( )

1 edition published in 2012 in English and held by 47 WorldCat member libraries worldwide

The modern synthesis of paleontology with evolutionary biology has successfully integrated population ecology into the study of the fossil record. While it may prove impossible to measure and account for the important processes that structure communities through time, the integration of community ecology into paleoecology remains to be done to further the modern synthesis. This dissertation attempts to integrate community ecology into the study of a lacustrine ostracode metacommunity across space today and through the mid Holocene on San Salvador Island, Bahamas. Patterns of community change across space today are investigated by comparing the live/dead agreement in taxonomic composition and rank-abundance of species in seven lakes. This taphonomic study establishes that live/dead agreement of ostracode assemblages is high in all lakes save one. Therefore, sampling of death assemblages, as is common in many paleolimnolgical studies, can be used to investigate changes in alpha and beta diversity of assemblages across time and space. Death assemblages were then sampled from thirty-two lakes on San Salvador to investigate the metacommunity dynamics that explain patterns of beta diversity of communities. I found that beta diversity was most strongly controlled by the local environment in which communities live with the change in communities most strongly correlated with changes in a complex hydrological gradient of: conductivity, dissolved oxygen, and alkalinity. After establishing that the metacommunity dynamics conformed to a species sorting model, I exploited the association between ostracode assemblages and conductivity to create a statistical model that used changes in ostracode assemblages to predict changes in conductivity within individual lakes on San Salvador. This model was then applied to archives of ostracode assemblages from the mid-Holocene to today to create a record of changing conductivity through time in three lakes. The model reveals large, high-frequency fluctuations in conductivity controlled by regional changes in precipitation/evaporation ratios, controlled by similarly high frequency climate oscillations. Finally, I use the metacommunity concept of community ecology as a theoretical tool to explain how changes in communities through time are related to ecosystem dynamics. Ostracodes, as easily-dispersed organisms who respond to changes in their local environment through habitat-tracking, prove to be consistently useful proxies of environmental changes. In this way, neontological principles are successfully applied to the paleoecological record demonstrating the seamless application of community ecology to the fossil record
Impact of corporate governance, excess CEO compensation, and CEO stock option grants on firm performance during recessionary periods by Robert P Antenucci( )

1 edition published in 2013 in English and held by 47 WorldCat member libraries worldwide

There is much debate over the efficacy of corporate governance in mitigating agency costs and improving the correlation between firm performance and Chief Executive Officer (CEO) pay. Research on this topic ranges from theories which maintain that CEO compensation in the U.S. is commensurate with CEO ability, and is therefore justified, to theories which maintain that CEOs are little more than overpaid rent extractors. I investigate the above dichotomy in the executive compensation literature by examining the impact of corporate governance on excess CEO compensation and firm performance during recessions. Business cycle contractions are challenging times for firms, and arguably a period when stronger corporate governance and CEO ability is significant to the success of the firm. I posit that better governed firms with lower levels of excess compensation outperform their peers in subsequent challenging recessionary periods. Stock option grants, a frequently used component of CEO pay packages, are thought to better align CEO and shareholder interests. However, with recent financial scandals there is much concern over this form of equity compensation. I examine the use of employee stock option grants in CEO compensation packages and whether such stock option compensation improves the relationship between CEO compensation and firm performance. My research achieves several aims: it extends the literature on the impact of corporate governance on firm performance by using a recessionary period metric, it examines the effectiveness of corporate governance in mitigating agency costs, it examines excess CEO compensation and this excess compensation connection with CEO ability or CEO rent extraction during recessionary periods, and it examines the impact of stock option grants in CEO pay packages on firm performance during recessionary periods. I find support for a decrease in abnormal return associated with trading on stronger corporate governance and support for rent extraction in the CEO compensation process during the 2001 recession
The use of reflection and inquiry in an online clinical post-conference by Karen A Zapko( )

1 edition published in 2013 in English and held by 47 WorldCat member libraries worldwide

An important goal of nursing education is to produce graduates who are problem solvers and competent clinical practitioners able to practice in a very complicated health care environment; reflection and inquiry are two ways to accomplish this goal. This qualitative study explored how eight senior baccalaureate nursing students developed in their ability to utilize reflection and inquiry at higher stages over time through the use of the online clinical post-conference conducted as an asynchronous discussion board. Transcripts of participant postings were examined weekly to determine the stage of reflection and inquiry displayed and a comparison was done to determine if the stages increased over time. Boud's model of the reflective process and the practical inquiry model of Garrison, Anderson, and Archer provided the theoretical framework for this study. Findings from this study demonstrated that participants developed in their ability to utilize reflection and inquiry at higher stages over time by engaging in the online clinical post-conference and that the online clinical post-conference was an effective venue that encouraged the use of reflection and inquiry. The social aspect of the online clinical post-conference (reading others' posts, having others read and comment on their posts, and asking each other questions) was seen as promoting learning from peers. Findings of this study could be used by nurse educators to change their pedagogy to produce nurses who learn from experiences and are lifelong learners. Nurse faculty should consider incorporating the use of reflection, inquiry, and the online clinical post-conference in all clinical courses
The power of the provocative : exploring world history content by Bryan L Ashkettle( )

1 edition published in 2013 in English and held by 47 WorldCat member libraries worldwide

This study addresses how my freshman world history students come to understand controversial issues as provocative within the secondary social studies classroom, and in what ways does their engagement with provocative issues influence their understanding of the content and the world around them. In addition, this research study seeks to discover in what ways does the teaching of these provocative materials inform and influence my curricular decisions, my pedagogy, and my relationship with my students. The three research questions were established to guide this study. 1. How do my world history freshman students come to understand provocative materials in regards to the historical content? 2. How does my students' engagement with these provocative materials influence their understanding of historical events and the world around them? 3. In what ways does the teaching of these provocative materials inform and influence my curricular decisions, my pedagogy, and my relationship with my students? Self-Study methodology was selected as a way to personally explore and examine my students understanding of provocative issues as well as my instruction. Grounded theory was utilized exclusively as a coding and analyzing device. To address these questions, thirteen student participants were selected for this study based on the criteria assumed by the questions. Data was collected from individual interviews, group interviews, student blog posts, and my own journal. As the data was analyzed and coded, nuanced constructs of the students' thinking began to coalesce on three distinct perceptions of provocative issues which evolved into the findings of this study. The first finding involved students who advocated for the inclusion of provocative issues. Their rationales for this inclusion were; Real World Phenomenon, Provocative for Grade Sake, Provocative for Interest Sake. A second finding involved a student who opposed the inclusion of provocative issues. This student's rationales were labeled Oppositional. The first two findings were partnered with the six students' rationales. The third finding involved the other seven students who had a varying range of nuanced articulation, varied their opinion across time, or lacked a clear robust rationale. This finding was labeled developing rationales. These students' perspectives were labeled other voices. These students' perspectives were labeled other voices. In addition to the student data, journaling was utilized to explore my own rationale for using provocative issues within my world history classroom. These journals provided a space for reflection on my practice in regards to the teaching of provocative issues, thus addressing my third research question. The journals, like the other data sources, were coded using grounded theory as the main analytical device. Upon completion of the data analysis of my journals, themes began to emerge that progressed into findings. The self-study findings were categorized as; The Closed Space of Sexuality, The Banality of Violence, and Anti-Americanism Linked to Racism to Foster Critical Thinking
Physiological differences between fit and unfit college-age males during exercise in normobaric hypoxia by Matthew Vern Bliss( )

1 edition published in 2013 in English and held by 47 WorldCat member libraries worldwide

Previous research suggests that physical activity may result in to decreases in arterial saturation (SaO2) and cerebral blood flow when exposed to a low oxygen environment between aerobically fit and unfit males. Purpose: The purpose of this study was to determine differences in SaO2, cerebral blood flow, minute ventilation (VE), and blood lactate between fit and unfit young males during exercise in hypoxia compared to normoxia. Methods: Apparently healthy college age males took part in two trials consisting of normobaric normoxia and normobaric hypoxia (12% oxygen). Fit (n = 3; VO2max = 51.5 ml x kg-1 x min-1 ± 3.1) and Unfit (n = 3; VO2max = 34.4 ml x kg-1 x min-1 ± 5.6) males cycled at 50% of their altitude adjusted VO2max (-26% of normoxia VO2max) for one hour after a two-hour baseline. Results: SaO2, cerebral blood flow, and RER were significantly decreased during hypoxia in all subjects (P < 0.05), but did not differ between groups. An interaction showed that Fit subjects had a higher SaO2 during exercise in hypoxia (P < 0.05). VE and lactate was greater during hypoxia (P < 0.05). The Fit group demonstrated a higher VE during exercise in hypoxia (P < 0.05). No differences in blood lactate were found between the two groups. Conclusion: The data suggests that when exposed to hypoxia aerobically unfit males may demonstrate decrements in oxygen utilization which may lead to decreases in physical activity and/or performance
Large scale message dissemination in mobile opportunistic networks by Boying Zhang( )

1 edition published in 2012 in English and held by 47 WorldCat member libraries worldwide

Large scale message dissemination is important in our daily life. Typical examples include emergency notifications and advertisements. However, traditional approaches for large scale message dissemination, e.g., the Internet and cellular networks often incur high communication and maintenance costs. With the proliferation of mobile handsets and their powerful communication technologies, e.g., Wi-Fi and Bluetooth, large scale message dissemination becomes feasible and affordable. We can envision such a mechanism originating at a source, e.g., a base station, and propagating via interactions among human forwarders’ mobile handsets. This creates much opportunity for large scale message dissemination; however, it also introduces new challenges. The message source might deliver irrelevant messages to receivers, irritating them and wasting time. Therefore, the first key challenge is to ensure the efficiency of message delivery in such mobile opportunistic networks. Generally, large scale message dissemination needs to involve many participants. Some might not forward the message unless appropriate incentives are provided. Hence, the second key challenge is proving such incentives for message forwarding. In this dissertation, we will study the two challenges. Our aim is to provide efficient message delivery and message forwarding incentives in large scale message dissemination in these networks
Role of TRPA1 and TRPV1 in propofol induced vasodilation by Sayantani Sinha( )

1 edition published in 2013 in English and held by 47 WorldCat member libraries worldwide

Aims: Propofol, clinically named as Diprivan is an intravenous anesthetic known to cause hypotension in patients presenting for surgery. We have investigated the vasodilatory signaling cascade by which propofol causes hypotension using both in vivo and in vitro experimental approaches. Methods and Results: Using high-fidelity microtip transducer catheter, mean arterial blood pressure (MAP) was measured in control, transient receptor potential ankyrin subtype 1 knock-out (TRPA1-/-), transient receptor potential vanilloid 1 knock-out (TRPV1-/-) and TRPA1-TRPV1 double-knockout mice (TRPAV-/-) in the presence and absence of L-NAME (an endothelial nitric oxide synthase inhibitor) and penitrem A [a big-conductance calcium gated (BKCa) channel inhibitor]. To further support our in-vivo data, murine coronary microvessels were isolated and cannulated for vasoreactivity studies. Furthermore, NO production from endothelial cells isolated from mouse aorta was also measured and immunocytochemical (ICC) studies were performed to show the intracellular localization of TRPA1 and TRPV1. Our in-vivo data shows that the characteristic propofol-induced depressor response is dependent on TRPA1-NO-BKCa pathway. Interestingly, vasoreactivity studies in isolated murine left anterior ascending (LAD) arteries demonstrate that TRPA1 and TRPV1 communicate with each other and propofol-induced vasodilation is dependent on both TRPA1 and TRPV1. Moreover our data also suggest that NO production and BK channel activation are the downstream mediators in this pathway. Finally, we demonstrate that NO production is attenuated in primary endothelial cells isolated from TRPAV-/- mice. ICC data also shows the co-localization of these channels in mouse aortic endothelial cells. Conclusions:This is the first study which has shown that propofol-induced vasodilation involves TRPA1 in-vivo and also there is an implication of cross-talk between TRPA1 and TRPV1 in the coronary bed. Furthermore by understanding the mechanisms by which this anesthetic causes hypotension and coronary dilation will help to mitigate the potential harmful side-effects of anesthesia in patients with little cardiovascular reserve. This will in turn ensure a better and faster post-operative recovery in patients, especially benefiting those suffering from diabetes and other cardiovascular disorders
The development of a gridded weather typing classification scheme by Cameron C Lee( )

1 edition published in 2014 in English and held by 47 WorldCat member libraries worldwide

Since their development in the 1990s, gridded reanalysis data sets have proven quite useful for a broad range of synoptic climatological analyses, especially those utilizing a map pattern classification approach. However, their use in broad-scale, surface weather typing classifications and applications have not yet been explored. This research details the development of such a gridded weather typing classification (GWTC) scheme using North American Regional Reanalysis data for 1979-2010 for the continental United States. Utilizing eight-times daily observations of temperature, dew point, pressure, cloud cover, u-wind and v-wind components, the GWTC categorizes the daily surface weather of 2,070 locations into one of 11 discrete weather types, nine core types and two transitional types, that remain consistent throughout the domain. Due to the use of an automated deseasonalized z-score initial typing procedure, the character of each type is both geographically and seasonally relative, allowing each core weather type to occur at every location, at any time of the year. Diagnostic statistics reveal a high degree of spatial cohesion among the weather types classified at neighboring locations, along with an effective partitioning of the climate variability of individual locations (via a Variability Skill Score metric) into these 11 weather types. Daily maps of the spatial distribution of GWTC weather types across the United States correspond well to traditional surface weather maps, and comparisons of the GWTC with the Spatial Synoptic Classification are also favorable. While the potential future utility of the classification is expected to be primarily for the resultant calendars of daily weather types at specific locations, the automation of the methodology allows the classification to be easily repeatable, and therefore, easily transportable to other locations, atmospheric levels, and data sets (including output from gridded general circulation models). Further, the enhanced spatial resolution of the GWTC may also allow for new applications of surface weather typing classifications in mountainous and rural areas not well represented by airport weather stations
 
moreShow More Titles
fewerShow Fewer Titles
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.37 (from 0.35 for The nature ... to 0.40 for Electromag ...)

Alternative Names
Ohio Library and Information Network. Electronic Theses and Dissertations Center

OhioLINK ETD Center

Languages
English (20)