排序方式: 共有29条查询结果,搜索用时 734 毫秒
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Marianne Junger Lynette Feder Joy Clay Sylvana M. Côté David P. Farrington Kate Freiberg Vicente Garrido Genovés Ross Homel Friedrich Lösel Matthew Manning Paul Mazerolle Rob Santos Martin Schmucker Christopher Sullivan Carole Sutton Tom van Yperen Richard E. Tremblay 《European Journal on Criminal Policy and Research》2007,13(3-4):327-356
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A positive, statistical and economic significant relation between growth, income level and the Economic Freedom of the World (EFW) index has been amply documented. Most analyses, however, use OLS methods which, in the presence of endogenous variables do not establish causality and produce biased and inconsistent estimates. This paper uncovers the exogenous component of EFW using IV methods and finds a robust channel from economic freedom to prosperity. The findings, including instrument validity tests, support the importance of policies and institutions for development and warrants policy advice aimed at increasing economic freedom to foster prosperity. 相似文献
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Violence, bribery, and fraud: the political economy of?elections in Sub-Saharan Africa 总被引:1,自引:0,他引:1
Post-Soviet African democratization has introduced elections into contexts that often lack restraints upon the behavior of candidates, resulting in the emergence of voter intimidation, vote-buying, and ballot fraud. We propose a model of electoral competition where, although some voters oppose violence, it is effective in intimidating swing voters. We show that in equilibrium a weak challenger will use violence, which corresponds to a terrorism strategy. Similarly, a nationally weak incumbent will use repression. However, a stronger incumbent facing local competition will prefer to use bribery or ballot fraud. We discuss the applicability of the model to several African elections. 相似文献
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Rubén González‐Vicente 《拉美政治与社会》2013,55(1):46-72
This article analyzes the developmental impact of two of the earliest investments made by Chinese companies in South America, the Shougang Corporation's mining activities in Peru and Andes Petroleum's oil extraction operations in Ecuador. The article draws attention to the importance of contextualizing and disaggregating instances of Chinese resource‐based investment in order to adequately grasp the complexity of processes that are contingent to particular regimes of natural resource governance, companies' backgrounds, and the strength and nature of local reactions, among other factors. It thereby encourages a critical examination of Chinese investment in South America that explores how the characteristics of that investment are reshaped by the long and contested histories of resource extraction in the region, the promotion of and resistance to particular visions of development, the agency of multiply situated and complex actors, and the wider transnational production networks in which resource extraction processes are embedded. 相似文献
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Vicente Chua Reyes Jr 《Asian Journal of Political Science》2013,21(1):97-125
Corruption is a perennial obstacle to the Philippines’ pursuit of development. The Department of Education (DepEd) is considered to be one of the most corrupt agencies in the Philippines. However, there are two DepEd programmes with different levels of effectiveness in controlling corruption. The Textbook Delivery Programme has been ineffective while the Programme on Basic Education has been successful. The article explains the different levels of implementing these programmes by using local perspectives via the ‘narratives of implementation actors’. Apart from providing insights on the challenges facing the evolving educational bureaucracy in the Philippines, this article also demonstrates the utility of network actor perspectives in appreciating the many concerns that determine and impede implementation performance and discusses the causes and impact of corruption and policy implementation on two public educational programmes. 相似文献
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Bernardino Benito Francisco Bastida Ana-María Ríos Cristina Vicente 《Public Choice》2014,161(3-4):367-383
This paper analyzes the causes of legal political rent extraction by using a direct measure of it, namely, local top politicians’ wages. In particular, we investigate whether local politicians’ incentives to extract rents by setting their own wages are influenced by the degree of political competition and voter information. We use a sample of the largest Spanish municipalities over the years 2008–2010. The results indicate that weaker political competition and lesser voter information are related to more rent extraction. In an additional analysis, we show that higher wages do not ensure better financial management. These findings confirm that when politicians can set their own salaries, higher wages do not mean better management, but they are just political rents. 相似文献
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Ana Claudia Martins Ciconelle BSc MSc Renan Lucio Berbel da Silva DDS MSc Jun Ho Kim DDS MSc PhD Bruno Aragão Rocha MD Dênis Gonçalves dos Santos BSc Luis Gustavo Rocha Vianna BSc MSc Luma Gallacio Gomes Ferreira BSc Vinícius Henrique Pereira dos Santos Jeferson Orofino Costa DDS Renato Vicente BSc MSc PhD 《Journal of forensic sciences》2023,68(6):2057-2064
The objective of this study is to assess the performance of an innovative AI-powered tool for sex determination using panoramic radiographs (PR) and to explore factors affecting the performance of the convolutional neural network (CNN). The study involved 207,946 panoramic dental X-rays and their corresponding reports from 15 clinical centers in São Paulo, Brazil. The PRs were acquired with four different devices, and 58% of the patients were female. Data preprocessing included anonymizing the exams, extracting pertinent information from the reports, such as sex, age, type of dentition, and number of missing teeth, and organizing the data into a PostgreSQL database. Two neural network architectures, a standard CNN and a ResNet, were utilized for sex classification, with both undergoing hyperparameter tuning and cross-validation to ensure optimal performance. The CNN model achieved 95.02% accuracy in sex estimation, with image resolution being a significant influencing factor. The ResNet model attained over 86% accuracy in subjects older than 6 years and over 96% in those over 16 years. The algorithm performed better on female images, and the area under the curve (AUC) exceeded 96% for most age groups, except the youngest. Accuracy values were also assessed for different dentition types (deciduous, mixed, and permanent) and missing teeth. This study demonstrates the effectiveness of an AI-driven tool for sex determination using PR and emphasizes the role of image resolution, age, and sex in determining the algorithm's performance. 相似文献
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The search for improvements in the management and quality of public services seems to be a constant in all public administrations, and there is an ever-increasing use of management techniques and models from the business sector. The aim of this paper is to show which management systems are being used by Spanish local governments to improve their management in terms of economy, quality and the environment. Our analysis is based on a questionnaire sent to Spanish local governments about the tools they use and the factors that influence their implementation. The results show that more efforts are necessary to implement performance measurement and total quality management, but they also show some positive aspects, such as the usefulness of performance measurement and its application to decisions in those local governments that have implemented it. 相似文献