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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
191

The influence of support on divorce adjustment : an evaluation

Bearden, Stephen R. 03 May 1994 (has links)
Many divorcing persons turn to treatment programs hoping for assistance in managing the process of divorce. Treatment programs include individual as well as group process models. One of the goals of most group process programs is to generate peer support which in turn is hoped to facilitate the process of divorce adjustment. Evaluations of such programs are few and limited. This study is an evaluation of a group process divorce adjustment intervention entitled, Divorce Recovery Workshop. This intervention includes education and support components. Two different methods of workshop delivery are compared and analyzed to determine the influence of support on the process of divorce adjustment. One method includes a small group component, the other does not. This workshop, offered during 1992/3, drew participants from the greater Salem, Oregon area who had recently divorced. This study examines four areas of divorce adjustment, comparing the two methods of workshop delivery, as well as participant experiences of support. These four included depression, degree of control, self-esteem, and persistence of attachment. Participants were administered pre-workshop and post-workshop questionnaires. Standardized measures included the Center for Epidemiological Studies Depression Scale (Radloff, 1977), the Rosenberg Scale (Rosenberg, 1965) for assessing self-esteem, and the Acceptance of Marital Termination Scale (Thompson and Spanier, 1983). Nonstandardized measures included the Degree of Control After Divorce Scale, the Support List adapted from a social support measure (Bengtson and Mangen, 1988), the Support Scale adapted from a medical intervention peer support measure (Pratt, 1984), and a brief Satisfaction with Support Scale. This evaluation revealed positive outcomes for participants in the four areas of divorce adjustment regardless of method of program delivery. Participants also showed increased experiences of support attributable to the intervention. However, additional research is needed to establish the relationship between support and divorce adjustment. The lack of a control group should lead to caution to generalizing these results. / Graduation date: 1994
192

Essays on the Influence of Social Networks on the Marketing Distribution Channel and New Product Diffusion

Li, Shenyu 06 1900 (has links)
The first essay studies the channel relationship between the reseller and the manufacturer based on a social network theory framework. We propose a conceptual model that approaches this topic from a relational embeddedness perspective. Our analysis shows how the reseller can strategically develop relational ties with a manufacturer that transform the latters common marketing mix into unique resources that enhance the resellers own profit. Results from a large scale survey of beer resellers in a local Chinese market suggest that in a channel setting, social norms (e.g. communication effectiveness and conflict resolution) and social relations influence the resellers access to the manufacturers valuable resources. Furthermore, we find that over embeddedness affects the resellers profit in a non-linear manner. That is, a resellers effort to develop a relationship with a particular manufacturer may generate information that lacks freshness, objectivity or usefulness, thereby diminishing the resellers profitability. Theory of social contagion states that individuals adoption of new product depends on the adoption of his immediate neighbors in a social network in addition to the influence from other sources. This research models the dynamic diffusion process of new drug in a social network of physicians. We simulated the information transmission process in a social network, where each network entity repetitively influences the probability of connected entitys new product adoption. The simulation approach integrates two seemingly contradictive concepts of cohesion and structural equivalence into a single modeling framework. Besides, it incorporates a coefficient that describes an individual entitys efficiency of information transmission. On the one extreme it assumes that information transmits to only one of the network neighbors and on the other extreme it assumes that information transmits to all of the network neighbors. We revisited Medical Innovation data and empirically find an optimum point for each of the four cities in this data set, using a discrete time hazard model. The four cities demonstrate different patterns of information transmission. Managerially, we suggest different ways of pinpointing initial adopters in different types of social networks. / Marketing
193

Smallholder farmers response to changes in the farming environment in Gokwe-Kabiyuni, Zimbabwe

Simbarashe Chereni. January 2010 (has links)
<p>Following Bryceson&rsquo / s article, &lsquo / De-agrarianisation in Sub-Saharan Africa: Acknowledging the Inevitable&rsquo / , and other related writings in the volume Farewell to Farms, rural development has become a contested academic and policy domain. One side of the debate is characterized by &lsquo / agrarian optimism&rsquo / , mirrored in various state policies and advice from the World Bank / the other side is typified by the de-agrarianisation thesis, which is sceptical regarding the agrarian path to rural development, because it doesn&rsquo / t accord with dominant trends. The main reasons given for the trend of de-agrarianisation are: unfavourable climatic trends, economic adjustments, and population growth. While the de-agrarianisation thesis seems to be a sensible proposition, it has failed to attract many disciples, evidenced by the continuation of current policy directions towards the agrarian optimistic path. The purpose of this study was to assess the applicability of the de-agrarianisation thesis in the Gokwe-Kabiyuni area of Zimbabwe, during a time when the nation went through climatic, economic and political crises. The idea was to assess the influence of such an environment to smallholder farmers in terms of livelihood strategies by observing trends in climate, education, occupation, and crop yields over the period. Both qualitative and quantitative methods were used to establish whether the de-agrarianisation process can be noted in two villages over the period 1990-2008. A comparative analysis of the experiences of smallholder farmers in these two villages revealed the existence of a cultivation culture and differential agrarian resilience depending on natural resource endowment and levels of infrastructural development, notwithstanding the involvement of the villagers in non-farm activities to diversify their livelihood portfolios.</p>
194

The Effect of Social Relationships on Company Internationalization

AL-QAISI, HANNEY, KURRE, BHUPESH REDDY January 2010 (has links)
ABSTRACT Title: The Effect of Social Relationships on Company Internationalization Course: Master’s level Thesis (EFO705) in International Business and Entrepreneurship 10 Swedish credit points  (15 ECTS) Authors: Hanney Al-Qaisi &amp; Bhupesh Reddy Kurre Tutor: Leif Linnskog Problem: How did social relationships affect the internationalization of a German IVF centre to the UAE? Using this case example, the thesis will be focused on studying the different social factors that could have affected the internationalization process. Purpose: The aim of this thesis was to describe the way that a local company in Germany went through internationalization to become a successfulmultinational company. We wanted to find out if there were any social factors that influenced the company. In particular, we wanted to investigate whether there were any entrepreneurial activities or barriers that influenced the company’s internationalisation and why it chose to open its subsidiary in the United Arab Emirates (UAE), which is far from Germany. Methods: This thesis is based on a qualitative methodology for gathering and analysis of the data around the internationalization of the German company.Qualitative methods are the best techniques for looking into social relationships and whether they have an effect on the internationalization process. Theories: Uppsala-Model; Network Theory; Social, Business &amp; Professional Relationships and International Entrepreneurship Target Group: This research provides knowledge and information to entrepreneurs businessowners, managers, general readers, and academics who would like to understand the influence of social relationships on internationalization.  Conclusion: Having searched through the published literature for relevant articles on the internationalization process, social relationships and entrepreneurial activities, we were able to inform our thesis with a theoretical framework for analyzing social relationships and internationalization. Social relationships do indeed have an influence on the internationalization process, and using our case example, it was possible to outline the patterns and nature of the influence. The theories (and patterns) are interlinked, and could be related in practical terms to the establishment of a satellite fertility centre in the UAE by a German head company.
195

Essays in Strategy

Galperin, Inna 15 February 2011 (has links)
My research examines how different organizational phenomena function under psychological and cognitive constraints. My first study examines how audiences evaluate an established or taken-for-granted category in negative moods. Categories facilitate exchange by serving as mental models or schemas that substitute for an organization’s attributes to help audiences make sense of what they see. Established categories are further postulated to be legitimized and taken for granted by audiences. Both organizations and audiences are thought to place a high value on category membership, preferring the schema-based category to the individual attributes underlying the category. Considering the preferences of a broad audience segment about an established category, I examine the boundary conditions that can cause the schemas of a legitimized category to fail. I propose that negative mood or affect will blur the category boundary causing it to no longer be preferred to the individual attributes. I further hypothesize that negative affect will induce a reversal of preferences, and offer a unified theory as to why negative affect can cause audiences to prefer the attributes underlying the category over the category itself in their evaluations. Results from data on a representative sample of individuals support these hypotheses. In my second study, I examine how social capital accrues to individuals who were part of a group from which a member achieved prominence only after the dismantlement of the group. I employ a difference-in-differences estimation strategy to identify endogenous social effects in the context of the Hollywood film industry and find significant positive results for egos who worked with ex-post Oscar winning alters within four to six years prior to the alters’ Oscar win. Social capital effects break down, however, for length of prior years in either the too recent or too distant past. I attribute these findings to individuals’ incorrect recall of past events.
196

Semantic social routing in Gnutella

Upadrashta, Yamini 18 February 2005
The objective of this project is to improve the performance of the Gnutella peer-to-peer protocol (version 0.4) by introducing a semantic-social routing model and several categories of interest. The Gnutella protocol requires peers to broadcast messages to their neighbours when they search files. The message passing generates a lot of traffic in the network, which degrades the quality of service. We propose using social networks to optimize the speed of search and to improve the quality of service in a Gnutella based peer-to-peer environment. Each peer creates and updates a friends list from its past experience, for each category of interest. Once peers generate their friends lists, they use these lists to semantically route queries in the network. Search messages in a given category are mainly sent to friends who have been useful in the past in finding files in the same category. This helps to reduce the search time and to decrease the network traffic by minimizing the number of messages circulating in the system as compared to standard Gnutella. This project will demonstrate by simulating a peer-to-peer type of environment with the JADE multi-agent system platform that by learning other peers interests, building and exploiting their social networks (friends lists) to route queries semantically, peers can get more relevant resources faster and with less traffic generated, i.e. that the performance of the Gnutella system can be improved.
197

Membership Change: A Network Perspective

Stuart, Helen Colleen 31 August 2011 (has links)
This dissertation theorizes about why a team’s network structure might affect team performance immediately and over time when membership changes. I propose that the low substitutability of a central team member immediately disrupts the structure of interactions between remaining members and leaves the team without an important resource that is relied upon to facilitate team process. This performance loss is expected to decay as time elapses because the saliency of the event creates the focus and urgency required for the team to implement widespread systemic change. Dense interaction and task redundancy among core members in a centralized structure is expected to help offset this performance loss both immediately and over time. I examine the effect of network structure on initial team performance (performance immediately following member exit and entry) and performance over time (the rate of performance change following exit and entry) in professional hockey teams experiencing membership change due to player injury. Results show that the departure of a central player has a significant and negative effect on a team’s immediate performance, but the centrality of the absent member has a curvilinear effect on team performance over time. Teams that lost a central player experienced a drop in performance immediately after that player’s exit; but subsequently demonstrated an improvement in performance over time. Teams that lost a peripheral player experienced a more positive performance trajectory over time when compared with their performance before the exit, while the performance of teams that lost a mid-central player remains constant over time. While team centralization had no influence on initial team performance, over time it dramatically altered team outcomes such that, regardless of the departing player’s network position, teams with a centralized structure improved over time, whereas decentralized teams performed more poorly over time.
198

Essays in Strategy

Galperin, Inna 15 February 2011 (has links)
My research examines how different organizational phenomena function under psychological and cognitive constraints. My first study examines how audiences evaluate an established or taken-for-granted category in negative moods. Categories facilitate exchange by serving as mental models or schemas that substitute for an organization’s attributes to help audiences make sense of what they see. Established categories are further postulated to be legitimized and taken for granted by audiences. Both organizations and audiences are thought to place a high value on category membership, preferring the schema-based category to the individual attributes underlying the category. Considering the preferences of a broad audience segment about an established category, I examine the boundary conditions that can cause the schemas of a legitimized category to fail. I propose that negative mood or affect will blur the category boundary causing it to no longer be preferred to the individual attributes. I further hypothesize that negative affect will induce a reversal of preferences, and offer a unified theory as to why negative affect can cause audiences to prefer the attributes underlying the category over the category itself in their evaluations. Results from data on a representative sample of individuals support these hypotheses. In my second study, I examine how social capital accrues to individuals who were part of a group from which a member achieved prominence only after the dismantlement of the group. I employ a difference-in-differences estimation strategy to identify endogenous social effects in the context of the Hollywood film industry and find significant positive results for egos who worked with ex-post Oscar winning alters within four to six years prior to the alters’ Oscar win. Social capital effects break down, however, for length of prior years in either the too recent or too distant past. I attribute these findings to individuals’ incorrect recall of past events.
199

Membership Change: A Network Perspective

Stuart, Helen Colleen 31 August 2011 (has links)
This dissertation theorizes about why a team’s network structure might affect team performance immediately and over time when membership changes. I propose that the low substitutability of a central team member immediately disrupts the structure of interactions between remaining members and leaves the team without an important resource that is relied upon to facilitate team process. This performance loss is expected to decay as time elapses because the saliency of the event creates the focus and urgency required for the team to implement widespread systemic change. Dense interaction and task redundancy among core members in a centralized structure is expected to help offset this performance loss both immediately and over time. I examine the effect of network structure on initial team performance (performance immediately following member exit and entry) and performance over time (the rate of performance change following exit and entry) in professional hockey teams experiencing membership change due to player injury. Results show that the departure of a central player has a significant and negative effect on a team’s immediate performance, but the centrality of the absent member has a curvilinear effect on team performance over time. Teams that lost a central player experienced a drop in performance immediately after that player’s exit; but subsequently demonstrated an improvement in performance over time. Teams that lost a peripheral player experienced a more positive performance trajectory over time when compared with their performance before the exit, while the performance of teams that lost a mid-central player remains constant over time. While team centralization had no influence on initial team performance, over time it dramatically altered team outcomes such that, regardless of the departing player’s network position, teams with a centralized structure improved over time, whereas decentralized teams performed more poorly over time.
200

Youtube: A New Ground For Advertising

Paranthaman, Ayilan 18 December 2009 (has links)
Faculty of Criminology, Justice and Policy Studies

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