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241.
Public procurement is a large sector of the economy with most procurement going to the defense sector. Procurement by the defense sector includes purchases made through contracts to private businesses that manufacture durable goods. Manufacturing of these goods results in pollution production with toxic wastes being among the most dangerous pollutants for public health. Despite green purchasing policy goals, most transactions in the United States through defense contracts result in disproportionately high-toxic pollution releases by manufacturers. We find that persistent exemptions granted defense agencies from following green purchasing policy result in a landscape where contractor environmental performance is unchanging with defense contractors persistently polluting in high amounts. Further, we find that defense contractors are linked to most toxic releases from procurement meaning that exemptions may be hindering potential advancements from green purchasing policy. Results can inform the design of new guidance about procurement and expand understanding of environmental inequality. 相似文献
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Abstract. This article argues that constitutional courts in Western European parliamentary systems should be integrated into discussions of how public policies are changed, rather than being viewed as an external veto point. It attempts to bridge a gap between a judicial politics literature that focuses on the micro–level of individual judges' votes and comparative scholarship that operates at the macro–level. A model for viewing constitutional courts as veto players, as a third institutional actor, is proposed and is then illustrated using the cases of legalizing divorce and blocking the executive reissuing decree laws in Italy. The model considers both the indirect and direct influences that constitutional courts can exert on the policy–making process. It also facilitates understanding and explaining the role of courts, as well as legislatures and executives, in conducting the interactions and bargaining that result in policy change. 相似文献
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This article expands understanding of gender and advancement in academic science by going into a new dimension of inquiry: Focusing on women associate professors in computing, it assesses the relationship between perceived chances for promotion to full professor and indicators of entrepreneurship, as part of key sets of individual and departmental independent variables that are also addressed. Data from a national survey of women in academic computing indicate that time spent in entrepreneurial activity does not predict excellent/good (compared to fair/poor) chances for promotion perceived by these women faculty, nor does the quantity/quality of entrepreneurial activity that they report for their home units. Departmental reward structures reported as favoring entrepreneurial activity negatively predict perceived chances for promotion. Other key individual and departmental characteristics also predict chances for promotion: faculty members’ age, collaboration, family characteristics, departmental climate, and US (compared to Canadian) location. Findings from interviews with a small subset of respondents to the survey illuminate the survey findings on the role of entrepreneurial factors in perceived chances for advancement. 相似文献
247.
目的探讨在环境温度变化条件下,人体静脉血ATP降解与死亡时间的关系。方法健康志愿者48名,随机分为6组,肱静脉取静脉血,置于10℃、15℃、20℃、25℃、30℃和35℃下保存;每4h应用ATP检测仪对不同温度下的ATP含量进行检测;应用SPSS统计软件进行回归分析,MATLAB软件进行差值函数分析拟合。结果各温度组ATP值随死亡时间延长均呈下降趋势,从取血即刻的1 573.683 E-13mol/L,降至6.00 E-13mol/L左右,所经历的时间分别为236h(10℃)、163h(15℃)、124h(20℃)、92h(25℃)、72h(30℃)和64h(35℃),对所得数据进行回归分析,得到各温度组下ATP含量变化与PMI关系的二元三次曲线方程(R2范围为0.976~0.990);进行差值拟合,得到10~35℃范围内ATP含量变化与PMI关系的三元四次曲面方程。结论在不同温度下,人体静脉血ATP降解与PMI关系符合三元四次方程分布,利用差值函数拟合的方法可在温度变化条件下进行死亡时间推断。 相似文献
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Avulsed teeth can be difficult if not impossible to recover in the outdoor environment, yet are important for victim identification. This study assessed dog teams as a resource to locate human teeth in a field setting and related performance in training with field capability. Standardized, objective training data were recorded and analyzed followed by double-blind capability trials. In the double-blind trials, 10 teeth were placed in each of six (10 m(2)) plots. Search time per plot ranged from 27 to 50 min, and the proportion of teeth found by the teams varied between 0.20 and 0.79. Using 0.45 m as a distance criterion for a "find," the proportion of false positives ranged between 0.07 and 0.75. Results show that dog teams are capable of recovering individual human teeth in the field setting with high precision although capability varies. Training records support a team's expected field performance. Additional studies are needed. 相似文献
249.
Forensic personnel generally use basic all-metal detectors for weapon searches because of their ease of use and cost efficiency. For ferromagnetic targets, an alternative easy to use and low-cost geophysical tool is a magnetic locator. The following study was designed to demonstrate the effectiveness of a common, commercially available magnetic locator in forensic weapon searches by determining the maximum depth of detection for 32 metallic forensic targets and testing the effects of metallic composition on detection. Maximum depth of detection was determined for 16 decommissioned street-level firearms, six pieces of assorted scrap metals, and 10 blunt or bladed weapons by burying each target at 5-cm intervals until the weapons were no longer detected. As expected, only ferromagnetic items were detected; weapons containing both ferromagnetic and nonferromagnetic components were generally detected to shallower depths. Overall, the magnetic locator can be a useful addition to weapon searches involving buried ferromagnetic weapons. 相似文献
250.
Mary Njenga Nancy Karanja Gordon Prain Diana Lee-Smith Michael Pigeon 《Development in Practice》2011,21(3):379-391
Despite increased attention to gender issues in the international development arena since the rise of feminism in the 1970s, few agricultural research organisations have integrated gender in their problem diagnosis and technology development. Gender mainstreaming can significantly enhance the impact of research and technology development. Entrenching gender mainstreaming in organisations and their research agendas remains a challenge. To overcome it requires political will, accountability, a change in organisational culture, and technical capacity within an organisation. This article presents an experience of gender-mainstreaming practice in the institutional culture and agricultural research processes by Urban Harvest and the International Potato Centre (CIP). 相似文献