浅谈化学教学中学生化学乐趣的培养

学生对化学的兴趣是推动他们愉快主动学习的内在动力,教师要充分利用这些学习兴趣组织教学。同时,学生学习化学的兴趣也需要在教学过程中有意识地培养与激发,使直接兴趣发展到间接兴趣,形成乐趣。那么在教学过程中如何培养学生的化学乐趣呢?文章加以阐述。     

高职汽车运用技术专业教学改革的思考

文章通过对职业院校当前汽车专业教学的现状进行分析,提出该专业教学改革的一些设想,深化改革和创新,突出高职特色,确立以“素质教育为核心,能力培养为基础”的人才培养模式。     

浅析大学公共英语中的翻译能力培养

本文从高校公共英语教学指导和高校公共英语教学实践中存在的问题,浅析了在大学公共英语中,必须重视对于学生翻译能力的培养,以及提出了对于公共英语中翻译教学革新的几点建议。     

浅析高校信息素养教育

21世纪将是知识创新和应用的可持续发展的新世纪.也是以数字技术为支撑的信息时代,它将改变我们的学习方式、工作方式、娱乐方式.为了适应数字化、信息化时代的要求,以培养新世纪人才为己任的高校必须进行一场信息素养教育革命.本文试从四个方面来浅析高校信息素养教育这个问题.     

Stress concentration factors at welds in pipelines and tanks subjected to internal pressure and axial force

In this paper, analytical expressions for stress concentration factors in pipes subjected to internal pressure and axial force are derived for a number of design cases based on classical shell theory. The effect of fabrication tolerances in simple butt welds is assessed. Analyses based on classical mechanics are compared with results from axisymmetric finite element analyses for verification of the presented methodology. Stress concentration factors are presented for circumferential butt welds in pipes welded together from pipes with different thicknesses, welds at buckling arrestors, welds at flanged connections in pipelines, and welds at ring stiffeners on the inside and the outside of the pipes. It also includes stress concentration factors at end closures in pipes for gas storage. Larger pipes are fabricated from plates with a longitudinal weld. This fabrication process introduces out-of-roundness in the pipes. The actual out-of-roundness is a function of internal pressure. An analytical expression for the bending stress in the pipe wall due to this out-of-roundness is presented. The derived stress concentration factors can be used together with a hot spot stress S–N curve for calculation of fatigue damage.     

高职教育课堂教学设计的两个误区

高职教育是我国高等教育的重要组成部分,课堂教学设计的优劣严重的影响高职教育的教学效果。在日常课堂教学中存在着将课堂教学程序替代课堂教学设计,忽视或难以准确进行学习需要分析等两种错误现象,如不正确予以分析更正,必将导致我国高等职业教育走向歧路。     

港口枢纽集装箱运输的协调评价

港口枢纽集装箱运输的协调程度对该系统的发展有着很大的促进或制约作用。通过建立港口枢纽集装箱运输的协调评价指标体系和协调评价模型,找出影响系统协调的主要因素和薄弱环节,从而对港口管理部门采取有力措施进行经营决策以争取系统的最大利益,以及制定港口发展规划具有一定的指导意义。     

Multiagent architectures for intelligent traffic management systems

This paper reports our experiences with agent-based architectures for intelligent traffic management systems. We describe and compare integrated TRYS and TRYS autonomous agents, two multiagent systems that perform decision support for real-time traffic management in the urban motorway network around Barcelona. Both systems draw upon traffic management agents that use similar knowledge-based reasoning techniques in order to deal with local traffic problems. Still, the former achieves agent coordination based on a traditional centralized mechanism, while in the latter coordination emerges upon the lateral interaction of autonomous traffic management agents. We evaluate the potentials and drawbacks of both multiagent architectures for the domain, and develop some conclusions respecting the general applicability of multiagent architectures for intelligent traffic management.     

桥梁受船只撞击的安全稳定性计算判别模式

桥—船相撞是困扰工程界已久的复杂灾害性问题,虽然其发生频率较低,但一旦出现即会带来桥梁或船只的损伤甚至毁灭。现有对这一问题的理论分析和处理手段还很不完善。针对这一严峻现实,在前人已有成果的基础上,探讨了桥梁抗撞稳定性判别模式。     

高职院校非焊割专业焊割实训教学探讨

随着焊割工艺的发展和社会对焊割作业人员技能要求的不断提高,焊割实训教学环节显得越来越重要。文章通过对非焊割专业的焊割实训教学现状的分析,进而从课题制定、教学实施和教学发展等方面提出一些有效的建议和措施。