信息量模型在地质灾害调查与区划中的应用研究

以浙江省仙居县地质灾害调查与区划项目为例,在分析当地实际地质情况的基础上结合信息论原理,对仙居县进行了基于多因素分析的地质灾害预测区划。经分析计算．得出的区划结果基本符合仙居县的实际情况。故用信息量模型进行地质灾害区划是可行的。     

个人因素事故致因模型的探讨

从个人因素事故致因模型出发．探讨了潜在危险存在的情况下．个人因素与事故发生之间的联系;分析了不同的个人因素对于潜在危险的感知认识的作用和影响以及由此而决定的工作行为的安全程度;讨论了以控制导致事故发生的个人因素为出发点．用以预防事故发生的对策措施;提出在现代安全科学领域中,不仅要解决职工安全生产技术方面的问题．更要强调职工个人的社会性,在工作之中的成就感,被尊重的程度．这样才能达到充分激励职工、加强安全生产的目的。     

生态示范区建设的模式及其实践的几点思考

就生态示范区建设的重要性、生态示范区建设模式进行探讨,分析了生态示范区建设模式的成功范例,最后提出创建生态示范区的建议。     

张北地震序列的尾波Qc值研究

采用尾波单次散射模型,选取张北地震序列70条波形记录,计算了张北地区t=58.88s时的尾波QC值:QC(f)=132.6±20f0.96±0.14。研究中发现,随流逝时间的增加QC逐渐增大,当流逝时间>120s时,出现逆转,QC迅速减小。文中采用频率域方法计算QC值,尾波功率谱计算自t>2ts开始,选用垂直向波形记录,取时间窗长为5.12s,步长2.56s向前滑动,每个时间窗两端5%的数据与余弦函数相乘,然后做FFT变换,分别计算9个中心频点各时间窗的能量密度谱,尾波流逝时间取各时间窗的中心点。当信号的能量密度<4倍的背景噪声能量密度时,尾波能量密度取值结束。求得能量密度谱后,线性拟合可求得不同流逝时间各频点的QC值。     

Developing and validating a scientific model for exploring safe work practices in interdisciplinary teams

Health research literature on quality and safety in recent years has pointed to a need to explore the characteristics of interdisciplinary team work unique to the health care sector and the particular organization. The literature also has identified a need for scientific models that explore and integrate existing findings concerning team dynamics. In this article, I attempt to address these concerns by developing and validating a scientific model for exploring safe work practices of interdisciplinary OR teams. Specifically, existing health research literature on quality and safety is reviewed to identify and incorporate various team-related aspects into dimensions of the proposed model. To further validate the model, I conduct an ethnographic study of safe work practices within an interdisciplinary OR setting. I find that safe work practices can be viewed as a product of the individual’s and team’s ability to draw on and combine explicit and tacit knowledge repertoires, which again is a product of the particular inner and outer structural conditions of a system. While the findings add their own unique distinctiveness to the scientific model, the findings also compare to the existing aspects and dimensions of the model. I conclude that the fit of the empirical data to the model improves the validity of the model, and also the potential application of the model in ethnographic research within different medical and/or team settings.     

Assessing safety culture in the Spanish nuclear industry through the use of working groups

This paper presents the design and the implementation of a methodology for measuring and improving safety culture at a nuclear power plant (NPP). The study has involved the completion of a pilot project aimed at seeing how to make use of the RADAR logic (Results, Approach, Deployment, Assessment and Review) of the EFQM model as a tool for the self assessment of safety culture in a nuclear power plant. The work was aimed at finding evidence of the safety culture that was in place at the plant and at identifying both the strengths of that culture and any areas in which it could be improved. The score obtained from an analysis of those strengths and areas for improvement has made it possible to prioritise the actions to be taken. The identification of perceptions and evidence, the agreement on the strong points and areas for improvement and the quantification of the safety culture have been performed by groups comprising volunteers who work at the NPP. The advantages of this methodology are assessed in the paper.     

电絮凝技术处理洗车废水试验

采用电絮凝技术处理洗车废水,以保证处理后出水能够循环利用。考察电流密度、初始pH值、NaCl浓度及电解时间等操作因素对COD与浊度去除效果的影响。结果表明,在最佳处理条件下,出水达到生活杂用水水质标准;另外,去除COD过程符合一级动力学模型,去除单位浓度COD产生4.02×10-3kg湿污泥、3.10×10-4kg干污泥。     

电除尘器分布板孔形对气流分布影响的仿真研究

针对不同气流分布板孔形,采用欧拉-拉格朗日多相流模型,应用CFX软件对电除尘器内部流场进行数值模拟计算,获得气流分布板孔形对气流均匀性影响的关系规律。仿真结果表明,孔形为方形的气流分布板能获得较佳的气流分布均匀性。     

丁坝对河流污染物迁移扩散的影响模拟研究

以深度平均的水流和污染物迁移扩散的通用微分方程为控制方程建立数学模型。设置上游丁坝,模拟分析丁坝长度占河宽的不同比例(10%、20%、40%)以及污水口在坝前2m的位置条件下,丁坝对水流流场及污染物迁移扩散的影响。结果表明:当丁坝长度达到河宽的40%的时候,污染带的宽度最大,而出口端面污染物浓度较低。通过设置合理的丁坝长度比例,可以在一定程度上降低沿程污染物的浓度。     

[HPMo][OTAC]2/SiO2的制备及其催化柴油氧化脱硫的研究

采用溶胶-凝胶法制备不同负载量的[HPMo][OTAC]2/SiO2,通过红外光谱、比表面积和孔结构分析对[HPMo][OTAC]2/SiO2进行表征,考察负载量、催化剂用量、氧化剂用量、反应温度和反应时间对模拟柴油脱硫效果的影响。结果表明,掺杂后的催化剂保持了Keggin结构,[HPMo][OTAC]2/SiO2在最佳反应条件下,苯并噻吩的脱除率达到48.3%,二苯并噻吩的脱除率达到67.2%。