爆破工程课程知识点互联教学

目前爆破工程教学中,知识点联系不紧密、教学理念与模式传统化,造成缺少综合运用知识解决实际问题能力的培养。通过对该课程构建多层次、多方位的知识点综合教学,提出以设计为主导的指导思想,改善学生的课外学习方式。这种新的教学内容体系和教学方式有利于提高学生自主解决问题的能力。     

安全技术及工程专业煤矿课程教学方式

介绍安全技术及工程专业关于煤矿方向教学过程中存在的问题,提出相关教学内容的一些想法,以期通过相关改革形成主专业干课程层次分明,以实践为导向的教学模式。     

Food Safety Objectives Should Integrate the Variability of the Concentration of Pathogen

The World Trade Organization introduced the concept of appropriate level of protection (ALOP) as a public health target. For this public health objective to be interpretable by the actors in the food chain, the concept of food safety objective (FSO) was proposed by the International Commission on Microbiological Specifications for Foods and adopted later by the Codex Alimentarius Food Hygiene Committee. The way to translate an ALOP into a FSO is still in debate. The purpose of this article is to develop a methodological tool to derive a FSO from an ALOP being expressed as a maximal annual marginal risk. We explore the different models relating the annual marginal risk to the parameters of the FSO depending on whether the variability in the survival probability and in the concentration of the pathogen are considered or not. If they are not, determination of the FSO is straightforward. If they are, we propose to use stochastic Monte Carlo simulation models and logistic discriminant analysis in order to determine which sets of parameters are compatible with the ALOP. The logistic discriminant function was chosen such that the kappa coefficient is maximized. We illustrate this method by the example of the risks of listeriosis and salmonellosis in one type of soft cheese. We conclude that the definition of the FSO should integrate three dimensions: the prevalence of contamination, the average concentration per contaminated typical serving, and the dispersion of the concentration among those servings.     

量纲分析在化学工程中的应用

用具体的示例探讨了量纲分析在化学工程中的应用     

绍兴平原区地基基础方法的分析与研究

通过对绍兴平原区的地基基础形式进行调查、分析与评价,提出了平原区地基基础类型、水泥搅拌桩和大直径预应力管桩的应用,为今后绍兴平原区地基基础处理提供参考.     

化学反应工程教学体会

文章以提高化学反应工程教学质量为目标,介绍了一些提高化学反应工程教学效果的个人体会,希望能为化学反应工程教学改革提供参考。     

Probabilistic-Based Structural Specifications

The construction industry is both the largest civilian industry and the most unique in terms of fragmentation and its approach to controlling risk. Structural specifications establish nominal safety factors and design criteria for engineered structures such as buildings, bridges, dams, and power facilities. The goal is satisfactory strength capacity to safely and economically meet the demands of structural performance. Structures must resist the highly uncertain effects of combined gravity, earthquakes, wind, and snow loads supported by natural and human-made materials. The public's expectation is that structures should last a long time and have low lifetime risk of structural failure. Historically, specifications have contained safety factors which evolved from past experiences and provided adequate safety or low risk. Due to pressures of economy and the need to optimize structural performance, structural specifications have recently been developed and accepted by industry based on structural reliability and risk-assessment principles. This paper reviews developments of probabilistic applications in structural specifications including specification format, database, implementation examples, target risk levels, present research activities, and future goals for establishing optimal risk-design procedures.     

收费公路总量控制分析

基于对收费公路总量控制的思考,选择GDP增长率、汽车保有量增长率和人口分布密度增长率作为影响收费公路总量的因素,分别建立东、中、西部三大区域回归模型,得出收费公路总量规模。通过相关分析发现:未来20年中国收费公路总体增长明显,2029年将达到收费公路总量最高峰,但是增长幅度将明显减慢,其最终退出历史舞台还需要经历长期的历史发展过程。     

师范院校发展应用型工科专业的策略分析

当前，许多师范院校的工科专业实力不强，在办学模式、师资队伍、社会认可度、实践教学等方面存在诸多问题．因此，必须采取措施，调整创新，加强师资建设，解决实践问题，整合学校优势，以使师范院校工科专业可持续地发展．     

放电加工实训教学新思路

随着放电加工工程实训教学在培训对象、内容要求及课时等方面的诸多变化,如何开拓一条新的教学思路,以适应新的教学要求就显得非常关键。文章通过运用工业工程理论,优化实训教学流程,探索出一套创新训练方法,开拓了一条新的教学思路。