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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.
21

The protection of transfrontier access rights : a comparative analysis of the relevant international legal frameworks

Büchele, Sandra January 2004 (has links)
No description available.
22

Ascertaining the effects of malevolent acts in a developing market on the stock returns of firms operating in those markets

Wapiennik, Zdzislaw 10 1900 (has links)
Experiencing malevolent acts is a common feature when conducting business in parts of the developing world, but the effects that these acts have on a firm’s stock price have not received sufficient attention by the literature. Filling the gap, this thesis looks at the oil industry in Nigeria and the effects of multiple malevolent acts over a five year period (ranging from 2006 to 2010) on the stock prices of the four major international oil firms operating therein: Shell, Chevron, Exxon, and Total. The stock price data was presented in the form of abnormal returns, the difference in stock price from the expected price. Ordinary least squares regression as well as Wilcoxian sign-rank techniques were used to test the abnormal returns data for our firms. This data was segregated by firm name as well as by event types to isolate the effects that each has on the returns of the firms under study. This thesis raises several hypotheses, such as that a negative event in general will lead to negative returns and that negative events affecting one firm will lead to positive returns for that firm’s competitors. We managed to determine that the only event types that had a significant impact on any firm’s returns were kidnappings and government policies (either political or economic) targeted to harm the firms. We discovered that kidnapping events affected Shell’s returns negatively, whereas they have positive impact on the returns of Chevron and Exxon. We postulate that the latter results are a reaction to the relatively strong negative effect on Shell’s returns. In response to negative government actions, Shell and Total experienced positive returns , we postulate that this is due to the market’s perception that these policies will lead to less supply and consequently to higher prices for Nigerian oil. Our results indicate that violent events have no impact, at least on the four major firms, whereas kidnappings and government policies do.
23

The protection of transfrontier access rights : a comparative analysis of the relevant international legal frameworks

Büchele, Sandra January 2004 (has links)
"Internal globalization" has become a common phenomenon which, among other things, has increased the number of mixed-national couples due to the greater mobility of people and the globalization of trade and commerce. Unanticipated difficulties can follow from the breakdown of such relationships for both children and parents if the custodial parent leaves the family's former habitual residence with the child. This is especially true for the left-behind parent. / The starting point for this study was the discussion among experts as to whether an Additional Protocol to the 1980 Child Abduction Convention might resolve the inherent weak protection of access rights. To answer this question concerning the necessity of such an Additional Protocol, this thesis provides an overview of the relevant existing and future international legal frameworks that address child protection and parental responsibilities and shows the evolution in child law from a formerly neglected issue to a high-profile topic. (Abstract shortened by UMI.)
24

Ascertaining the effects of malevolent acts in a developing market on the stock returns of firms operating in those markets

Wapiennik, Zdzislaw 10 1900 (has links)
Experiencing malevolent acts is a common feature when conducting business in parts of the developing world, but the effects that these acts have on a firm’s stock price have not received sufficient attention by the literature. Filling the gap, this thesis looks at the oil industry in Nigeria and the effects of multiple malevolent acts over a five year period (ranging from 2006 to 2010) on the stock prices of the four major international oil firms operating therein: Shell, Chevron, Exxon, and Total. The stock price data was presented in the form of abnormal returns, the difference in stock price from the expected price. Ordinary least squares regression as well as Wilcoxian sign-rank techniques were used to test the abnormal returns data for our firms. This data was segregated by firm name as well as by event types to isolate the effects that each has on the returns of the firms under study. This thesis raises several hypotheses, such as that a negative event in general will lead to negative returns and that negative events affecting one firm will lead to positive returns for that firm’s competitors. We managed to determine that the only event types that had a significant impact on any firm’s returns were kidnappings and government policies (either political or economic) targeted to harm the firms. We discovered that kidnapping events affected Shell’s returns negatively, whereas they have positive impact on the returns of Chevron and Exxon. We postulate that the latter results are a reaction to the relatively strong negative effect on Shell’s returns. In response to negative government actions, Shell and Total experienced positive returns , we postulate that this is due to the market’s perception that these policies will lead to less supply and consequently to higher prices for Nigerian oil. Our results indicate that violent events have no impact, at least on the four major firms, whereas kidnappings and government policies do.
25

Economics theory of political kidnapping : theory and evidency for the case of the FARC in Colombia

Castillo Valencia, María del Pilar January 2015 (has links)
O objetivo desta tese é explicar a redução nas taxas de sequestros políticos na Colômbia nos últimos anos a partir da análise do comportamento estratégico dos criminosos. Pontos de vista convencionais explicam a diminuição dos sequestros como o resultado exitoso da política de segurança democrática do presidente Álvaro Uribe Vélez. No entanto, até agora, tem sido desconsiderada a busca de explicações alternativas à já existente, que bem poderiam ser encontradas a partir da perspectiva de análise dos dilemas organizacionais produzidos pelos sequestros nas FARC – Forças Armadas Revolucionárias da Colômbia –, da sua interação estratégica com o governo e, em particular, de seus efeitos sobre sua atividade global e na decisão de pôr fim a essa ação criminosa. O interesse dos três ensaios que compõem esta tese é estudar as motivações deste grupo rebelde, sob o enfoque da teoria da agência, dividindo sua estrutura organizativa entre líderes (principal), que tomam as decisões estratégicas, e os combatentes (agentes), que as realizam, em um contexto de informação assimétrica, para tomar decisões racionais. Cada ensaio desenvolve a partir de diferentes perspectivas, mas tendo como base o enfoque racional de principal-agente, as razões que levaram a organização a renunciar a uma de suas atividades criminosas, considerada no princípio como uma ação estratégica eficiente que obrigaria o governo colombiano a negociar. O primeiro ensaio está focado em mostrar os custos de transação que gerou essa estratégia para os agentes e o principal. Esta análise faz uso dos mesmos instrumentos analíticos empregados para analisar os custos de qualquer transação econômica que leva a cabo uma organização legal. Mostrando que os custos dessa atividade foram altos, expressados, primeiro, em um conflito de interesses entre o líder, encarregado de esquematizar e designar tarefas, e os agentes, responsáveis por sua execução. A divergência entre estas duas partes teve origem em uma mudança nas expectativas dos agentes, que preferiam mais atividades de combate às relacionadas com o sequestro, em um contexto de perseguição constante do exército colombiano. O segundo ensaio estuda como essa mesma estratégia afetou o contexto no qual os agentes definem suas preferências. Através do uso de três enfoques diferentes da teoria econômica se expõem três interpretações diversas da mudança nas preferências dos agentes: a) uma mudança no risco; b) uma divergência entre as preferências subjacentes e induzidas; c) a presença de dimensões motivacionalmente salientes. E o terceiro ensaio apresenta um modelo formal para estabelecer um sistema de compensações eficiente que o principal oferece ao agente para atenuar o que sobre seu comportamento gerou o sequestro. Os resultados mostram que, considerando que os recursos das organizações armadas ilegais são escassos, quanto maiores são os incentivos oferecidos aos agentes para evitar que desertem, menor é a capacidade da organização para penalizar os desertores e menor a utilidade do principal. Simulando o modelo para um conjunto específico de parâmetros se conclui que a incorporação do mecanismo de autocumprimento (self-enforcing) dentro da função de utilidade do principal aumenta seus custos e propicia o baixo esforço do agente e seu comportamento oportunista. / The objective of this thesis is to explain the reduction in the rate of political kidnapping in Colombia in recent years by means of analyzing the strategic behavior of its perpetrators. This is the basic question addressed in this thesis. Conventional views interpret the fall in the kidnapping rate as an outcome of President Álvaro Uribe’s democratic security policy. I will argue, however, that this is not the whole story, since political kidnapping led Farc [for its acronym in Spanish, Fuerzas Armadas Revolucionarias de Colombia] into an unprecedented strategic situation that induced a breach between leader (principal) and combatant (agent) concerns with strong effects on its overall activity and its decision to stop that criminal action. The focus of three essays making up this thesis is on studying FARC’s motivations from the perspective of agency theory, by splitting its organizational structure into principals and agents who are acting on a setting of asymmetrical information. Each essay develops, from different perspectives, the reasons that led the organization to give up that criminal activity due to the substantial political and organizational risks involved. The first essay is focused on the transactions costs generated by the kidnapping strategy both for agents and principals. This analysis is based on the same theoretical tools used to study the costs held by any legal organization. I found that the costs of kidnapping were high, expressed first in a conflict of interest between the leader –responsible for designing and assigning tasks—and the agents in charge of its implementation. The divergence was due to a shift in the expectations of agents who preferred combat activities over the menial tasks associated with kidnapping, in a context of heavy pressure by the Colombian Army. In contradistinction to legal organizations in which such type of divergence can be solved, in part, by paying higher wages to agents in order to extract their best effort, this alternative is not feasible for FARC, for those who joined the organization are supposed to have an ideological and political commitment. The second essay studies how the kidnapping strategy affected the preferences of agents and their behavior by means of using three different approaches from economic theory: (a) a change in risk, (b) a divergence between underlying and induced preferences and, (c) the presence of salient motivational dimensions. The third essay examines, through a principal-agent model, the nature of the trade-off between incentives and enforcing mechanisms that the leadership of an Armed illegal organization offers to its agents. Using a MATLAB’s optimization tool-box, I computed the optimal transfer system for a given parameterization of the model, and analyzed its properties. The numerical analysis shows that the inclusion of a self-enforcing mechanism on the leader’s objective function increases the costs for the principal and could lead agents to choose low efforts and engage in opportunistic behavior.
26

Economics theory of political kidnapping : theory and evidency for the case of the FARC in Colombia

Castillo Valencia, María del Pilar January 2015 (has links)
O objetivo desta tese é explicar a redução nas taxas de sequestros políticos na Colômbia nos últimos anos a partir da análise do comportamento estratégico dos criminosos. Pontos de vista convencionais explicam a diminuição dos sequestros como o resultado exitoso da política de segurança democrática do presidente Álvaro Uribe Vélez. No entanto, até agora, tem sido desconsiderada a busca de explicações alternativas à já existente, que bem poderiam ser encontradas a partir da perspectiva de análise dos dilemas organizacionais produzidos pelos sequestros nas FARC – Forças Armadas Revolucionárias da Colômbia –, da sua interação estratégica com o governo e, em particular, de seus efeitos sobre sua atividade global e na decisão de pôr fim a essa ação criminosa. O interesse dos três ensaios que compõem esta tese é estudar as motivações deste grupo rebelde, sob o enfoque da teoria da agência, dividindo sua estrutura organizativa entre líderes (principal), que tomam as decisões estratégicas, e os combatentes (agentes), que as realizam, em um contexto de informação assimétrica, para tomar decisões racionais. Cada ensaio desenvolve a partir de diferentes perspectivas, mas tendo como base o enfoque racional de principal-agente, as razões que levaram a organização a renunciar a uma de suas atividades criminosas, considerada no princípio como uma ação estratégica eficiente que obrigaria o governo colombiano a negociar. O primeiro ensaio está focado em mostrar os custos de transação que gerou essa estratégia para os agentes e o principal. Esta análise faz uso dos mesmos instrumentos analíticos empregados para analisar os custos de qualquer transação econômica que leva a cabo uma organização legal. Mostrando que os custos dessa atividade foram altos, expressados, primeiro, em um conflito de interesses entre o líder, encarregado de esquematizar e designar tarefas, e os agentes, responsáveis por sua execução. A divergência entre estas duas partes teve origem em uma mudança nas expectativas dos agentes, que preferiam mais atividades de combate às relacionadas com o sequestro, em um contexto de perseguição constante do exército colombiano. O segundo ensaio estuda como essa mesma estratégia afetou o contexto no qual os agentes definem suas preferências. Através do uso de três enfoques diferentes da teoria econômica se expõem três interpretações diversas da mudança nas preferências dos agentes: a) uma mudança no risco; b) uma divergência entre as preferências subjacentes e induzidas; c) a presença de dimensões motivacionalmente salientes. E o terceiro ensaio apresenta um modelo formal para estabelecer um sistema de compensações eficiente que o principal oferece ao agente para atenuar o que sobre seu comportamento gerou o sequestro. Os resultados mostram que, considerando que os recursos das organizações armadas ilegais são escassos, quanto maiores são os incentivos oferecidos aos agentes para evitar que desertem, menor é a capacidade da organização para penalizar os desertores e menor a utilidade do principal. Simulando o modelo para um conjunto específico de parâmetros se conclui que a incorporação do mecanismo de autocumprimento (self-enforcing) dentro da função de utilidade do principal aumenta seus custos e propicia o baixo esforço do agente e seu comportamento oportunista. / The objective of this thesis is to explain the reduction in the rate of political kidnapping in Colombia in recent years by means of analyzing the strategic behavior of its perpetrators. This is the basic question addressed in this thesis. Conventional views interpret the fall in the kidnapping rate as an outcome of President Álvaro Uribe’s democratic security policy. I will argue, however, that this is not the whole story, since political kidnapping led Farc [for its acronym in Spanish, Fuerzas Armadas Revolucionarias de Colombia] into an unprecedented strategic situation that induced a breach between leader (principal) and combatant (agent) concerns with strong effects on its overall activity and its decision to stop that criminal action. The focus of three essays making up this thesis is on studying FARC’s motivations from the perspective of agency theory, by splitting its organizational structure into principals and agents who are acting on a setting of asymmetrical information. Each essay develops, from different perspectives, the reasons that led the organization to give up that criminal activity due to the substantial political and organizational risks involved. The first essay is focused on the transactions costs generated by the kidnapping strategy both for agents and principals. This analysis is based on the same theoretical tools used to study the costs held by any legal organization. I found that the costs of kidnapping were high, expressed first in a conflict of interest between the leader –responsible for designing and assigning tasks—and the agents in charge of its implementation. The divergence was due to a shift in the expectations of agents who preferred combat activities over the menial tasks associated with kidnapping, in a context of heavy pressure by the Colombian Army. In contradistinction to legal organizations in which such type of divergence can be solved, in part, by paying higher wages to agents in order to extract their best effort, this alternative is not feasible for FARC, for those who joined the organization are supposed to have an ideological and political commitment. The second essay studies how the kidnapping strategy affected the preferences of agents and their behavior by means of using three different approaches from economic theory: (a) a change in risk, (b) a divergence between underlying and induced preferences and, (c) the presence of salient motivational dimensions. The third essay examines, through a principal-agent model, the nature of the trade-off between incentives and enforcing mechanisms that the leadership of an Armed illegal organization offers to its agents. Using a MATLAB’s optimization tool-box, I computed the optimal transfer system for a given parameterization of the model, and analyzed its properties. The numerical analysis shows that the inclusion of a self-enforcing mechanism on the leader’s objective function increases the costs for the principal and could lead agents to choose low efforts and engage in opportunistic behavior.
27

Crime and press in Lima: Analysis of the role of the press during a «wave» of kidnappings (September-October 2003) / Crimen y prensa en Lima: Análisis del papel de la prensa escrita durante una «ola» de secuestros (septiembre-octubre 2003)

Dargent Bocanegra, Eduardo January 2015 (has links)
El artículo analiza una supuesta «ola de secuestros» que la prensa escrita limeña reportó entre septiembre y octubre de 2003, y cuyo punto más alto fue el secuestro, por más de un mes, del menor Luis Guillermo Ausejo (LGA). Este evento permite documentar y analizar la forma en que se construye desde la prensa una imagen distorsionada del crimen y cómo puede afectar la percepción del público y las autoridades. En este caso se aprecia cómo la prensa seria de Lima exageró al reportar algunos secuestros producidos en la ciudad, incrementando la emergencia social, además de atraer el interés político sobre el tema.
28

Economics theory of political kidnapping : theory and evidency for the case of the FARC in Colombia

Castillo Valencia, María del Pilar January 2015 (has links)
O objetivo desta tese é explicar a redução nas taxas de sequestros políticos na Colômbia nos últimos anos a partir da análise do comportamento estratégico dos criminosos. Pontos de vista convencionais explicam a diminuição dos sequestros como o resultado exitoso da política de segurança democrática do presidente Álvaro Uribe Vélez. No entanto, até agora, tem sido desconsiderada a busca de explicações alternativas à já existente, que bem poderiam ser encontradas a partir da perspectiva de análise dos dilemas organizacionais produzidos pelos sequestros nas FARC – Forças Armadas Revolucionárias da Colômbia –, da sua interação estratégica com o governo e, em particular, de seus efeitos sobre sua atividade global e na decisão de pôr fim a essa ação criminosa. O interesse dos três ensaios que compõem esta tese é estudar as motivações deste grupo rebelde, sob o enfoque da teoria da agência, dividindo sua estrutura organizativa entre líderes (principal), que tomam as decisões estratégicas, e os combatentes (agentes), que as realizam, em um contexto de informação assimétrica, para tomar decisões racionais. Cada ensaio desenvolve a partir de diferentes perspectivas, mas tendo como base o enfoque racional de principal-agente, as razões que levaram a organização a renunciar a uma de suas atividades criminosas, considerada no princípio como uma ação estratégica eficiente que obrigaria o governo colombiano a negociar. O primeiro ensaio está focado em mostrar os custos de transação que gerou essa estratégia para os agentes e o principal. Esta análise faz uso dos mesmos instrumentos analíticos empregados para analisar os custos de qualquer transação econômica que leva a cabo uma organização legal. Mostrando que os custos dessa atividade foram altos, expressados, primeiro, em um conflito de interesses entre o líder, encarregado de esquematizar e designar tarefas, e os agentes, responsáveis por sua execução. A divergência entre estas duas partes teve origem em uma mudança nas expectativas dos agentes, que preferiam mais atividades de combate às relacionadas com o sequestro, em um contexto de perseguição constante do exército colombiano. O segundo ensaio estuda como essa mesma estratégia afetou o contexto no qual os agentes definem suas preferências. Através do uso de três enfoques diferentes da teoria econômica se expõem três interpretações diversas da mudança nas preferências dos agentes: a) uma mudança no risco; b) uma divergência entre as preferências subjacentes e induzidas; c) a presença de dimensões motivacionalmente salientes. E o terceiro ensaio apresenta um modelo formal para estabelecer um sistema de compensações eficiente que o principal oferece ao agente para atenuar o que sobre seu comportamento gerou o sequestro. Os resultados mostram que, considerando que os recursos das organizações armadas ilegais são escassos, quanto maiores são os incentivos oferecidos aos agentes para evitar que desertem, menor é a capacidade da organização para penalizar os desertores e menor a utilidade do principal. Simulando o modelo para um conjunto específico de parâmetros se conclui que a incorporação do mecanismo de autocumprimento (self-enforcing) dentro da função de utilidade do principal aumenta seus custos e propicia o baixo esforço do agente e seu comportamento oportunista. / The objective of this thesis is to explain the reduction in the rate of political kidnapping in Colombia in recent years by means of analyzing the strategic behavior of its perpetrators. This is the basic question addressed in this thesis. Conventional views interpret the fall in the kidnapping rate as an outcome of President Álvaro Uribe’s democratic security policy. I will argue, however, that this is not the whole story, since political kidnapping led Farc [for its acronym in Spanish, Fuerzas Armadas Revolucionarias de Colombia] into an unprecedented strategic situation that induced a breach between leader (principal) and combatant (agent) concerns with strong effects on its overall activity and its decision to stop that criminal action. The focus of three essays making up this thesis is on studying FARC’s motivations from the perspective of agency theory, by splitting its organizational structure into principals and agents who are acting on a setting of asymmetrical information. Each essay develops, from different perspectives, the reasons that led the organization to give up that criminal activity due to the substantial political and organizational risks involved. The first essay is focused on the transactions costs generated by the kidnapping strategy both for agents and principals. This analysis is based on the same theoretical tools used to study the costs held by any legal organization. I found that the costs of kidnapping were high, expressed first in a conflict of interest between the leader –responsible for designing and assigning tasks—and the agents in charge of its implementation. The divergence was due to a shift in the expectations of agents who preferred combat activities over the menial tasks associated with kidnapping, in a context of heavy pressure by the Colombian Army. In contradistinction to legal organizations in which such type of divergence can be solved, in part, by paying higher wages to agents in order to extract their best effort, this alternative is not feasible for FARC, for those who joined the organization are supposed to have an ideological and political commitment. The second essay studies how the kidnapping strategy affected the preferences of agents and their behavior by means of using three different approaches from economic theory: (a) a change in risk, (b) a divergence between underlying and induced preferences and, (c) the presence of salient motivational dimensions. The third essay examines, through a principal-agent model, the nature of the trade-off between incentives and enforcing mechanisms that the leadership of an Armed illegal organization offers to its agents. Using a MATLAB’s optimization tool-box, I computed the optimal transfer system for a given parameterization of the model, and analyzed its properties. The numerical analysis shows that the inclusion of a self-enforcing mechanism on the leader’s objective function increases the costs for the principal and could lead agents to choose low efforts and engage in opportunistic behavior.
29

Claims making in the case study of missing children: A case study

Griggs, James Leonard 01 January 1990 (has links)
No description available.
30

Historical Research on Boko Haram: a Debate : The Cases of Ansaru and the Chibok Kidnapping

Camurri, Tommaso January 2019 (has links)
The thesis focuses on the phenomenon of Boko Haram in Nigeria, attempting to give an understanding of the group based on the academical analysis that has been elaborated through time. A contextualisation of the movement’s evolution introduces two cases of study, currently under scholars’ scrutiny: the birth of the splinter-cell Ansaru and the Chibok kidnapping. The work is integrated by on-going debates among scholars and the most recently published contributions to the research.

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