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991.
Inverse Productivity or Inverse Efficiency? Evidence from Mexico 总被引:2,自引:0,他引:2
Using a unique panel data set from rural Mexico, we find strong evidence of a negative relationship between farm size and both productivity and technical efficiency: large farms not only have a lower value of output per hectare than small farms, they also produce further from the efficiency frontier. Our findings suggest that, in spite of the ongoing transformation of agricultural supply chains and economists’ recommendations for small farmers to exit crop production, there may be sustained advantages for smallholder farms. Our analysis offers new insights into inverse-farm size relationship, the productivity–efficiency relationship, and the use of stochastic frontier techniques. 相似文献
992.
In recent years, scholars have pointed to the politically demobilizing effects of means-tested assistance programs on recipients. In this study, we bridge the insights from policy feedback literature and adolescent political socialization research to examine how receiving means-tested programs shapes parent influence on adolescent political participation. We argue that there are differences in pathways to political participation through parent political socialization and youth internal efficacy beliefs for adolescents from households that do or do not receive means-tested assistance. Using data from a nationally representative sample of 536 Black, Latino, and White adolescents (50.8% female), we find that adolescents from means-tested assistance households report less parent political socialization and political participation. For all youth, parent political socialization predicts adolescent political participation. Internal political efficacy is a stronger predictor of political participation for youth from a non-means-tested assistance household than it is for youth from a household receiving means-tested assistance. These findings provide some evidence of differential paths to youth political participation via exposure to means-tested programs. 相似文献
993.
Kimberly L. Henry Peter J. Lovegrove Michael F. Steger Peter Y. Chen Konstantin P. Cigularov Rocco G. Tomazic 《Journal of youth and adolescence》2014,43(2):221-232
Adolescent bullying is a common problem in schools across America. The consequences of bullying are significant, and can include severe psychological trauma and suicide. A better understanding of the mechanisms that link bullying and suicidal ideation is needed in order to develop effective prevention and intervention initiatives. Meaning in life is a potential mechanism that has not been studied in this context. It was hypothesized that meaning in life could serve as both a mediator and a moderator of the relationship between bullying victimization and suicidal ideation. As a mediator, meaning in life is considered to explain why bullying victimization leads to suicidal ideation. As a moderator, meaning in life is considered to buffer the ill effect of bullying victimization on suicidal ideation. Data collected from an ethnically diverse sample of 2,936 (50 % female), 6th–12th grade students from one urban school district in the Northeastern US were used to examine the hypotheses. The model for girls was consistent with mediation (i.e., meaning in life may explain how victimization leads to suicidal ideation). The model for boys was consistent with moderation (i.e., the ill effect of victimization on suicidal ideation was attenuated as meaning in life increased). Implications for prevention are discussed. 相似文献
994.
Kubo S Orihara Y Kitamura O Ikematsu K Tsuda R Nakasono I 《Forensic science international》2001,115(1-2):155-158
Neuroleptic malignant syndrome (NMS) is a rare but potentially fatal disorder. In forensic cases, post-mortem diagnosis of NMS is sometimes difficult if ante-mortem information, such as neuroleptic ingestion or signs and symptoms, cannot be obtained. A 39-year-old Japanese male on a neuroleptic treatment regimen suddenly became agitated and died. Autopsy revealed muscle rigidity and hyperthermia. Post-mortem examination of blood revealed elevation of creatine phosphokinase-MM (CK-MM) and lactate dehydrogenase-4 and dehydrogenase-5 (LDH-4 and LDH-5). In renal glomeruli and tubules, myoglobin was stained immunohistochemically. From these findings, the cause of death was considered to be NMS. To support the diagnosis of NMS, both skeletal and cardiac muscles were stained with actin, myoglobin, desmin and mitochondria antibodies immunohistochemically. Actin, myoglobin, desmin, and mitochondria had been lost from skeletal, but not from the cardiac muscle, which suggested that only the skeletal muscle was damaged. Moreover, because mitochondria had disappeared only from the skeletal muscle, it was considered that skeletal muscle degeneration was caused by mitochondrial damage. Therefore, it is suggested that immunostaining of skeletal muscle by antibodies for muscle-associated proteins and mitochondria is useful to corroborate a diagnosis of NMS. 相似文献
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997.
India, Brazil and South Africa constitute an important subset of Brazil, Russia, India, China and South Africa (BRICS) and emerging powers at large in a shifting global order. The article examines the capacity of these democratic BRICS to serve as a role model to the rest of the developing world, at a time when liberal democracy seems to be experiencing serious challenges and dislocations in the Global North. The article considers the important achievements of democratic BRICS, in terms of their individual performances as well as through active cooperation strategies through organisations such as the India, Brazil and South Africa (IBSA) Dialogue Forum. Attention is drawn to the inherent structural dilemmas confronted by democratic BRICS to serve as genuine role models, given their domestic weaknesses as well as inherent constraints on their collective action strategies. Our central argument is that these countries, individually and collectively, are likely to have a crucial bearing on the future of liberal democracy on a global scale. 相似文献
998.
Mariya Y. Omelicheva 《Terrorism and Political Violence》2013,25(3):369-393
This work examines differences in the level of violence of counterterrorism measures adopted by Central Asian states. Why do some Central Asian governments opt for wanton repression in the name of the struggle with terrorism, while others adopt less severe methods of control and prevention? To answer this question, this study draws on a synthesis of rationalist and constructivist explanations. Like rationalists, it posits that the magnitude of terrorism and states' material capabilities affect governments' responses to terrorism. Following constructivists, the study stresses the impact of ideas about the nature of terrorist threats and views on the appropriateness of the use of force on the counterterrorism policies of Central Asian states. 相似文献
999.
1000.
Allan Y. Jiao 《国际比较与应用刑事审判杂志》2013,37(1):79-89
Police officers in Western countries do not run day‐to‐day security operations in private companies and corporations. In contrast, Chinese police are directly involved in corporate security management. Responding to the criticisms that comparative studies in the West have overemphasized general and macro‐sociological analyses, this paper will introduce a specific Chinese corporate policing model based on the researcher's two‐month field research recently. The corporation under study is managed through a score keeping system, where security scores are concretely established, and a comprehensive approach is utilized which embodies the use of technical, formal, administrative, educational, and community control measures. 相似文献