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Vladimir Kogan Stéphane Lavertu Zachary Peskowitz 《Journal of policy analysis and management》2016,35(3):639-661
Public education has been transformed by the widespread adoption of accountability systems that involve the dissemination of school district performance information. Using data from Ohio, we examine if elections serve as one channel through which these accountability systems might lead to improvements in educational quality. We find little evidence that poor performance on widely disseminated state and federal indicators has an impact on school board turnover, the vote share of sitting school board members, or superintendent tenure, suggesting that the dissemination of district performance information puts little (if any) electoral pressure on elected officials to improve student achievement. 相似文献
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Vladimir Kontorovich 《欧亚研究》2014,66(5):811-829
A substantial body of literature argues that government funding motivated by the Cold War shaped (or distorted) the content of the American academic disciplines. This article tests the impact of such funding on the academic study of the Soviet economy, a small field created to help fight the Cold War. It documents the amount of attention given by researchers to the military sector of the Soviet economy, the topic of central importance for the Cold War, and finds that their publications largely ignored it. Considerations other than the interests of the sponsors determined the choice of topics in the discipline. 相似文献
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Vladimir G. Treml 《后苏联事务》2013,29(3):277-282
Reflecting Gorbachev's demands for glasnost' (openness), the Central Statistical Administration recently published several key statistical series which had not been available in the USSR for the last 5 to 35 years. These included data on grain harvests, life expectancy and infant mortality, and production and consumption of alcohol. The article shows that the newly available data compare well with estimates made by Western specialists. Journal of Economic Literature, Classification Numbers: 052, 124, 225. 相似文献
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Vladimir G. Treml 《后苏联事务》2013,29(1):65-94
The impact of perestroyka and glasnost' on the diversity and credibility of statistical coverage of the Soviet economy is discussed and analyzed. Included in the up-to-date review of such topics as reform desiderata, the institutional anatomy, key problem areas, criticism and control, and rapid advances in the release of previously unavailable statistics, is a detailed chronicle of pertinent developments since April, 1985. It is suggested that very little improvement has been observed in the quality and reliability of Soviet economic statistics, particularly in the area of prices and in the methodology of national income accounting. Journal of Economic Literature, Classification Numbers: 052, 124, 221, 225, 227. 相似文献
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Zivković V Nikolić S Babić D Djonić D Atanasijević T Djurić M 《Journal of forensic sciences》2012,57(3):654-657
Brainstem pontomedullary laceration (PML) in falls from a height appears as isolated cases and usually in feet-first impacts with a ring fracture. The aim of this study was to determine the frequency of PML in falls from a height, as well as the frequency of concomitant head and neck injuries. Out of 261 cases, PML was present in 40. An impact to the chin, as well as a feet- or buttocks-first impact, most often led to PML owing to transmission of the impact force. Also, a lateral, frontal, or posterior head impact, with subsequent hinge fracture, as well as the frontoposterior hyperextension of the head associated with an upper spine fracture, could be possible mechanisms of PML in falls from a height. The jawbone and other facial bones act as shock absorbers, and their fracture diminishes energy transfer toward the skull and protects the brain and brainstem from injury. 相似文献
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Pontomedullary lacerations in unhelmeted motorcyclists and bicyclists: a retrospective autopsy study
Zivković V Nikolić S Strajina V Babić D Djonić D Djurić M 《The American journal of forensic medicine and pathology》2012,33(4):349-353
ABSTRACT: Pontomedullary lacerations (PMLs) have often been reported in car occupants and pedestrians, are less frequently described in motorcyclists, and are very rarely described in bicyclists. The aim of this study was to determine the frequency of brainstem PMLs among fatally injured motorcyclists and bicyclists as well as the frequency of concomitant cranial, facial, and cervical spine injuries in such cases. A possible underlying mechanism of PML in fatally injured motorcyclists and bicyclists might thus be established. Of 443 cases of fatally injured motorcyclists and bicyclists, a sample of 381 cases of fatally injured motorcyclists and bicyclists with head injury of Abbreviated Injury Scale score of 3 or greater was formed and further analyzed. This group was composed of 345 men and 36 women. The average age was 48.8 ± 20.8 years (range, 15-99 years). In the analyzed sample group, there were 158 motorcyclists and 223 bicyclists. Partial PMLs were present in 44 cases (12%) within the sample of 381 head injuries, which breaks down to 40 men and 4 women. In our study, the impact area on the head and the specific skull base fracture type were good predictors of either PML occurrence or absence (B = -2.036, Wald = 161.312, P < 0.01, for the whole model). Impact to the chin, with or without a skull base fracture, most often led to this fatal injury due to impact force transmission, either through jawbone or vertebral column. Also, lateral head impact, the most frequent in bicyclists, with subsequent hinge fracture, PML, and frontoposterior hyperextension of the head that is associated with upper spine fracture, could be possible mechanisms of brainstem injury in fatally injured motorcyclists or bicyclists. Our study showed that the jawbone, as well as other facial bones, could act as shock absorbers, and their fracture could diminish energy transfer toward the skull and protect the brain and brainstem from injury. 相似文献
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