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901.
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
902.
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
903.
226 cases of psychosis involved in lawsuit were investigated. The problem of forensic identification was discussed. Some suggestions were given to raise the quality of the forensic identification in psychosis. 相似文献
904.
The survey studied 100 dependence about their age, marriage, occupation, the way of heroin taking, history of heroin taking, and the reason of the first heroin taking. The data showed that most dependence were young or middle aged men, or people unable to graduate from junior middle school, self-employed laborers and unemployed. Dependence of cadres and people with better education were increasing. The heroin injection is becoming popular. 相似文献
905.
AbstractThis paper examines the ideology of Cecilia Lillian Tshabalala who spent 18 years in the United States from 1912 to 1930. Within two years of returning to South Africa, she founded the self-help group, the Daughters of Africa in 1932. Tshabalala used the Daughters and the widely read newspapers—Bantu World and Ilanga laseNatal—to define, construct, and diagnose the African nation she found materially and socially wanting upon her return. Tshabalala’s experience abroad and her exposure to African-American women’s clubs and her participation at the annual Chautauqua conferences in upstate New York provided the platform for her to conduct her own social service gospel in segregated South Africa. This essay, which argues that religion served as Tshabalala’s antidote to all the social ills plaguing the African nation, traces the evolution of her ideology by discussing how she was in conversation with African-American and South African male movements, and also women on the African continent. 相似文献
906.
Joseph L Verheijde M Y Rady Joan L McGregor 《The Journal of law, medicine & ethics》2007,35(4):515; author reply 515-515; author reply 516
907.
Kevin P. Weinfurt Ph.D. Joëlle Y. Friedman M.P.A. Michaela A. Dinan B.S. Jennifer S. Allsbrook B.S.P.H. Mark A. Hall J.D. Jatinder K. Dhillon B.S.P.H. Jeremy Sugarman M.D. M.P.H. M.A. 《The Journal of law, medicine & ethics》2006,34(3):581-591
Strategies for disclosing investigators' financial interests to potential research participants have been adopted by many research institutions. However, little is known about how decisions are made regarding disclosures of financial interests to potential research participants, including what is disclosed and the rationale for making these determinations. We sought to understand the attitudes, beliefs, and practices of institutional review board chairs, conflict of interest committee chairs, and investigators regarding disclosure of financial interests to potential research participants. Several themes emerged, including general attitudes toward conflicts of interest, circumstances in which financial interests should be disclosed, rationales and benefits of disclosure, what should be disclosed, negative effects of and barriers to disclosure, and timing and presentation of disclosure. Respondents cited several rationales for disclosure, including enabling informed decision making, promoting trust in researchers and research institutions, and reducing legal liability. There was general agreement that disclosure should happen early in the consent process. Respondents disagreed about whether to disclose the amounts of particular financial interests. Clarifying the goals of disclosure and understanding how potential research participants use the information will be critical in efforts to ensure the integrity of clinical research and to protect the rights and interests of participants. 相似文献
908.
Y.W. Peter Chiu 《当代中国》2006,15(47):275-295
Since 1979, when Mainland China began to open up its economy, a process of economic integration has been going on between Hong Kong and Mainland China. The return of Hong Kong to Mainland China in 1997 speeded up the integration process. China's entry into the World Trade Organization (WTO) at the end of 2001 further intensified the integration process. In June 2003, CEPA (Closer Economic Participation Arrangement) was signed between Mainland China and Hong Kong, which set a further important milestone in the economic integration between them. In June 2004, the concept of regional economic integration was inaugurated in the Pan-Pearl River Delta Regional Cooperation and Development Forum. This article attempts to review the economic integration process after the signing of CEPA. Issues related to the implementation of CEPA are also examined and discussed. It is hoped that both the Hong Kong business sector and potential foreign investors can have a comprehensive picture of CEPA so that they can design appropriate actions to benefit most from CEPA. 相似文献
909.
Ivan Y. Sun 《Journal of criminal justice》2007,35(6):581-595
This research assessed whether female officers respond to domestic violence differently from male officers. Though many studies had analyzed police responses to domestic violence since the 1980s, very few had empirically examined different types of actions, especially noncoercive actions, employed by women and men in handling domestic violence. Using data collected by a large-scale observational project, this research analyzed police supportive and control actions toward citizens involved in domestic violence. Findings showed that female officers were more likely than male officers to provide support to citizens involved in domestic violence. Female and male officers, however, did not differ significantly in exercising control actions toward citizens. Regression results from separate models for female and male officers revealed that some of the variables are predictive of police actions for one gender but not the other. Implications for policy and future research are discussed. 相似文献
910.