表面贴装技术在电子工艺教学实践中的应用

简述表面贴装技术(SMT)的特点。介绍表面贴装技术在调频(FM)收音机中的应用、装配的工艺流程,以及自动搜索调频收音机在电子工艺实习中的示范作用,总结了教学经验和体会。     

搅拌站混凝土施工工艺控制浅议

混凝土的生产和施工的过程直接影响整个工程质量。混凝土生产应在材料的储备、设备的完好程度、技术人员素质和技能、天气的变化、交通状态的影响、现场施工部位和施工条件等方面综合考虑,合理地指挥和调动机械与人力,以满足工程项目的需要。文章就如何保证混凝土施工质量,对混凝土施工工艺进行了探讨。     

SH6型转换锁闭器底壳的加工

文章主要介绍了SH6型转换锁闭器重要零件——底壳的加工工艺过程,包括工艺路线的制定、工艺结构分析、工装设计、使用中的注意事项、刀具和切削参数的选择方面等内容,着重分析了机加工过程中的重点、难点,并对影响加工精度的外在和内在因素进行了归纳分析,总结了加工底壳类零件的一些方法和经验。     

简易防盗报警器实习电路的故障浅析

根据华南理工大学的电子工艺实习课程特点和教学实践,文章介绍了对学生在简易防盗报警器实习中的常见错误进行分析,并提出常见故障的解决方法。强化学生对理论知识的综合应用,提高学生的分析能力和解决实际问题的能力,为培养具有勇于创新、认真严谨的综合人才而努力。     

不同施工工艺水泥土搅拌桩的试验研究

通过对采用不同施工工艺生产的水泥土搅拌桩的芯样抗压强度、复合地基承载力特征值和单桩竖向承载力特征值的对比分析，得出了相同地质条件下，施工工艺对水泥土搅拌桩工程性状影响较大，并证明采用改进后的六叶片搅拌头、二喷六搅工艺施工的水泥土搅拌桩成桩质量好。     

文泡间电酸洗净化工艺在西宁地区的设计探讨

对文泡间电酸洗净化工艺在西宁地区的循环回路、工艺参数及净化效率进行了探讨。     

提高水泥混凝土路面平整度的工艺措施

水泥砼路面平整度的好坏直接影响路面的使用质量和行车的舒适性,因此提高其平整度问题便成为施工控制关注的重点,文章论述了影响水泥砼路面平整度的因素及提高路面平整度的施工工艺.     

The Dark Side of the Moon—Unilluminated Dimensions of Systems Practice

This paper explores some of the unilluminated or less explicit aspects of issues faced by those using systems approaches in real-world problem situations. The paper contends that discourse on systems approaches tends to be dominated by rational logical aspects of methodology, though other aspects of the intervention process, such as political dimensions of legitimacy, have become more important in the last 10–15 years. Unsurprisingly the discourse has been different for different methods. Method has been largely invisible in the hard systems area (or at least relatively little discussed), and although it has been the subject of much debate in the soft systems area, the debate has been nonetheless narrowly defined. It is narrowly defined in its relative neglect of process aspects for conducting a systems study. Since the nature of these processes (for example, the client/consultant relation) changes from hard systems to soft systems to critical systems in a way that makes social process progressively a more important dimension of each approach, this aspect has featured more in discourse on critical systems, but in general it remains a curious area of neglect. There is increasing interest in this area, and some signs that relevant theory and practice from closely related domains is being accessed to strengthen these approaches. This paper attempts to make a contribution by outlining and discussing some areas that could usefully complement existing systems approaches. The paper considers the following areas: (a) client relations, (b) analyst role, (c) language and communication, (d) group processes, (e) culture (and rationalities), (f) information gathering techniques and processes, and (g) change management or implementation. The paper draws on experiences of systems practices in the literature, interviews with systems practitioners, and writings in related areas. The paper ends by discussing some of the implications of these issues for the development of well-rounded systems approaches.     

工艺路线可变车间作业调度的两级遗传算法

车间作业调度问题是一个著名的NP难题，而工艺路一可变的车间作业调度是一个更一航意义的问题，算法研究是车间作业调度问题的一个重要研究方向，最近几年，遗传算法开始在调度问题中得到广泛应用，分析了工艺路线可变的车间作业调度问题的特点，并建立了相应的优化模型，提出了一种两级遗传算法，重新设计了算法的遗传编码方案以及选择、交叉和交异算子，通过实例仿真，表明了用两级遗传算法求解工艺路线可变的车间作业调试问题是有效和可行的。     

桥梁高强度灰岩碎石混凝土的配制

对华容注滋口大桥C50T型梁试制中出现的问题进行了深入分析,通过改变集料的破碎工艺、优化混凝土的配合比,改进施工工艺等措施成功配制了C50高强度混凝土,取得了较好的效果。