汽车左/右后轮罩冲压工艺及翻边、斜楔翻边模具设计

根据制件的特点 ,分析了其冲压成形的工艺难点 ,制定了合理的工艺 ,简化了模具设计和制造 ,并画出了制件的综合工序图 ,分析了各工序内容和工艺特点 ,说明了各工序模具设计的关键问题。同时以第 5道工序为例 ,重点分析了斜楔翻边、翻边模的结构、工作原理及设计要点     

污水处理工艺系统优化设计理论的研究与发展

综述了污水处理工艺系统优化设计理论研究的发展历史 ,分析总结了优化设计模型研究的发展规律以及需要解决的关键性问题 ;详细介绍了几个具有典型代表性的非线性系统优化模型的结构及寻优方法 ;从 6个特征方面横向比较了部分优化数学模型的研究成果 ;结合国内研究动态提出了对该领域研究前景的展望     

从绿色消费到绿色技术到绿色设计

分析了绿色消费、绿色技术、绿色设计的内涵；阐述了由绿色消费引起绿色技术和绿色设计的链式反应过程；讨论了“绿色浪潮”的成因。     

低影响开发对城市内涝节点雨洪控制效果研究——不同降雨特性下的情景模拟

以中国福建省福州市晋安区解放溪流域高密度居民住宅区为例,针对不同降雨重现期、降雨历时和雨峰系数的降雨情景,利用PCSWMM模型模拟该地区的雨洪情况,并运用模型的低影响开发（LID）模块,研究7种不同LID用地布局情景对研究区内涝节点的雨洪控制效果.情景模拟结果表明：在不同降雨情景下,各LID用地布局情景会使节点的洪峰流量减小、积水时间减少、积水深度变小;植被浅沟措施和植被浅沟&绿色屋顶组合措施会使节点SS峰值浓度高于现状用地,其余布设情景下,SS峰值浓度均减小.LID措施对节点流量和水质的控制效果在低降雨重现期和长降雨历时的降雨情景下较为有效.在单个LID布设情景中,渗透铺装措施控制最佳,而组合LID布设情景中,渗透铺装&植被浅沟&绿色屋顶是最佳的组合控制措施.研究结果可为南方城市居民区实施海绵城市建设提供技术支持,并为地方制定相关规范和标准提供参考和借鉴.     

构建湿地系统水力学参数的设计模型研究

构建湿地污水处理系统的水力学参数对于其功能的发挥起着非常重要的作用。在探讨构建湿地主要水力学设计参数的基础上,根据描述构建湿地污染物去除的几类机理模型:一级动力学模型、连续完全混合反应器模型、Monod动力学模型、Ergun公式以及对流-弥散模型,分别导出了相应的构建湿地污水处理系统水力学设计参数的计算模型并分析了不同设计模型的特点。     

生态浮床的结构设计

目前生态浮床已经成为一项重要的水质修复技术。文章对生态浮床的生态功能、分类、应用等做出介绍,重点描述了浮床的结构和设计,并对生态浮床今后的发展方向作出展望。     

耐淋雨试验系统的研制

对自行研制的耐淋雨试验系统进行了介绍。设备研制中对试验系统的试验台升降及旋转系统、降雨强度调节系统和控制系统进行了优化设计,同时根据环境试验要求,指出了该试验设备研制过程中所遇到的淋雨滴雨合一、受试面转换和温度调控等技术难点,并给出了解决途径。该试验系统研制成功,为考核装备的环境适应性和产品可靠性提供了科学的试验手段。     

关于环境风险评价中事故池容积的探讨

通过对建设项目环境风险评价的分析,提出事故池是环境风险评价中的一项重要防范措施,其容积既要满足事故状态下对消防水的收集又要体现经济合理性。对环境风险评价中的事故池的容积设置进行了探讨。     

电磁混响室的理论设计与场均匀性仿真

总结了混响室腔室和搅拌器的设计准则,并依此完成了最低可用频率为400MHz的混响室腔室和搅拌器的设计。利用FEKO软件对混响室建模,进行场均匀性仿真,计算工作区8个位置的电场,得到场标准偏差。仿真结果表明,设计的混响室性能完全符合标准IEC61000-4-21的规定,电场均匀性小于3dB。     

The effect of contextual information on professional judgment: Reliability and biasability of expert workplace safety inspectors

Introduction: A critical aspect of occupational safety is workplace inspections by experts, in which hazards are identified. Scientific research demonstrates that expectation generated by context (i.e., prior knowledge and experience) can bias the judgments of professionals and that individuals are largely unaware when their judgments are affected by bias. Method: The current research tested the reliability and biasability of expert safety inspectors’ judgments. We used a two-study design (Study 1, N = 83; Study 2, N = 70) to explore the potential of contextual, task-irrelevant, information to bias professionals’ judgments. We examined three main issues: (1) the effect that biasing background information (safe and unsafe company history) had on professional regulatory safety inspectors’ judgments of a worksite; (2) the reliability of those judgments amongst safety inspectors and (3) inspectors’ awareness of bias in their judgments and confidence in their performance. Results: Our findings establish that: (i) inspectors’ judgments were biased by historical contextual information, (ii) they were not only biased, but the impact was implicit: they reported being unaware that it affected their judgments, and (iii) independent of our manipulations, inspectors were inconsistent with one another and the variations were not a product of experience. Conclusion: Our results are a replication of findings from a host of other professional domains, where honest, hardworking professionals underappreciate the biasing effect of context on their decision making. The current paper situates these findings within the relevant research on safety inspection, cognitive bias and decision making, as well as provides suggestions for bias mitigation in workplace safety inspection. Practical Application: Our results have implications for occupational health and safety given that inspection is an integral aspect of an effective safety system. In addition to our findings, this study contributes to the literature by providing recommendations regarding how to mitigate the effect of bias in inspection.