Environmental regulation and competitive performance: new evidence from a sectoral study

Economic theory provides different perspectives on the relationship between environmental regulation and company environmental and competitive performance. A frequently analysed issue refers to the impact of environmental regulation on company performance. Using qualitative data collected within the recently completed Environmental regulation and Market forces Providing Incentives for Resource Efficiency (EMPIRE) project, we analysed the relationship between environmental regulation and company competitiveness, operating in the building and construction (B&C) sector. Empirical evidence from the correlation analysis emphasises that environmental regulation can be an important driver of competitive performance improvements in relevant segments of the European B&C sector.     

加速溶剂萃取-固相萃取净化-超高效液相色谱串联质谱法测定土壤中11种全氟化合物

采用超高效液相色谱-串联质谱联用法（UPLC-ESI-MS/MS）,建立了分析土壤中11种全氟化合物（PFCs）的方法.以甲醇作为萃取剂,样品经加速溶剂萃取仪（ASE）萃取,固相萃取净化后,使用UPLC-ESI-MS/MS联用仪分析样品中11种PFCs.在6 min内就可快速稳定地将所选取的11种全氟化合物分离,且最低检测浓度为0.518—3.520 pg.g-1之间,这些化合物在土壤中的平均添加回收率在71.2%—119.2%之间.应用此方法测得宜兴市水稻土样品中所选取的PFCs含量为0.006—0.780 ng.g-1之间.     

基于液相色谱法分析水环境中大环内酯类抗生素污染的研究进展

大环内酯抗生素广泛使用,在水环境中的残留越来越引起世界关注.本文综述了国内外基于液相色谱技术分析水环境中大环内酯的方法,比较不同预处理法以及分析方法的灵敏度和检出限.固相萃取法可以同时富集和净化,消耗试剂少,方便,野外操作可行,是理想的预处理技术.液相色谱串联质谱技术选择性好、特异性高、灵敏度高,可以检测浓度低于ng.L-1的目标物,是一种可靠理想的分析方法.最后对大环内酯分析研究进行了展望.     

水中痕量阿特拉津的测定方法研究

采用固相萃取与高效液相色谱结合的方法测定了水样中痕量阿特拉津的含量,研究了最佳固相萃取条件:选择洗脱液为乙腈,过样流速为5.0 mL/min。最佳的色谱条件:流动相为乙腈和水,温度为25℃,流速为1.0 mL/min,检测波长为222 nm。阿特拉津质量浓度在0.05～5 mg/L范围内线性关系良好,回归方程y=219.71x+2.2343,回收率平均值为98.46%,将该方法应用于实际环境水样的分析测定,操作简单,结果准确。     

Financial incentives,professional values and performance: A study of pay‐for‐performance in a professional organization

We investigated the effect of financial incentives on performance in a professional organization. Whereas agency theory treats tangible rewards such as money as a potentially powerful motivator for improving performance, the professional control perspective posits that the motivational effects of financial incentives will depend on the intended recipients attitudes toward the incentives relative to their professional values. The study setting was a large network of physician practices that adopted a financial incentive program to improve physician performance in the management of diabetic patients. Consistent with agency theory, performance did improve following the introduction of the incentive. However, consistent with the professional control perspective, physicians' psychologically based attitudes toward the incentive program regarding its impact on their own work autonomy and the importance of the performance goals moderated the effect of the incentive on performance. Study findings indicate that agency theory and professional control are complementary theoretical perspectives for understanding how professionals will respond to the imposition of performance‐related financial incentives. In terms of practice, pay‐for‐performance programs aimed at professional organizations should be designed to take into account the values and goals of an organization's professionals to maximize the effect of financial incentives on performance. Copyright © 2012 John Wiley & Sons, Ltd.     

Does process fairness affect job performance? It only matters if they plan to stay

Incorporating a social exchange perspective, we examined the joint impact of process fairness and turnover intentions on job performance. Results from two independent samples suggest that employee turnover intentions moderate relations between process fairness perceptions and employee job performance. Specifically, the positive effects of the two types of process fairness on performance were stronger for employees who planned to stay with the organization than for those who intended to leave. Copyright © 2012 John Wiley & Sons, Ltd.     

通用桥式起重机驾驶员操作可靠度研究

为有效改善桥式起重机驾驶员的操作水平,通过分析和确定这种起重机的工作流程,建立驾驶员基本动作序列。采用第二代人因可靠性分析(HRA)模型,按正常工作状态与紧急工作状态2种情况,对驾驶员操作可靠度进行全面、定量的分析与研究。结果表明,驾驶员操作可靠度定量研究中,重要的是要考虑起重机机型和基本操作动作序列、工作状态、动作时间、人机工效、作业环境等复杂因素。建立驾驶室人机工效定量分析与评价机制,加强驾驶员专业教育培训及考核制度、改善工作环境等技术措施,从根本上提高驾驶员操作可靠度等级,才能符合起重机械安全的发展趋势。     

热固性树脂对芳纶复合材制防弹性能的影响

采用环氧树脂对酚醛树脂进行改性,树脂的粘结强度明显提高,当环氧树脂含量保持在6％时,防弹复合板的防弹性能最优,复合板的安全裕度更高。而当树脂固含量在15％-25％,复合板的最大粘结力为37．8-40．1N,其中,当树脂固含量为20％时,防弹复合板的防弹性能最优。同时研究了增塑剂对复合板防弹性能的影响,结果显示,当增塑剂含量为15％时,防弹复合板的防弹性能最优。     

滚筒式制动试验台检验能力的比对试验及评价

制动性能是机动车安全技术性能检验工作中的重要项目,多采用滚筒反力式制动试验台.该种台试检验方法的评价指标较多,重复性不好,且影响检测结果的因素各异,因此其检验能力的比对试验及评价困难.通过比对试验的实施,讨论确定了进行比对的检测参量,分析了车辆技术状况变化对比对的影响.然后,分别采用经典统计法和稳健统计Z比分数方法对滚筒台式制动性能比对试验数据进行处理,对计算结果进行了分析讨论,并就结果的评价问题进行了进一步的探讨.本研究有助于促进和提升机动车安全技术检验机构的检验工作,对于保障道路交通安全具有积极地意义.     

袋式除尘器脉冲阀性能评价方法及选型计算

披露了“863”课题的最新研究成果.阐述了袋式除尘器脉冲阀喷吹性能的评价指标和评价方法,并从工程应用的角度提出了对脉冲阀清灰能力的评价方法,介绍了一种简便实用的脉冲阀选型计算方法,供设计选型时参考.