激光相变硬化层预测与控制简易模型

根据激光扫描时工件内温度场及硬化层的分布特征，提出了简便实用的硬化层预测计算公式。并在此基础上，提出了以硬化层分布均匀性最佳为目标的激光参数优化模型。     

HCZX1340数控钻铣床升级改造

针对一台HCZK1340数控钻铣床进行了升级改造。对机床导轨及丝杠的状况进行了检查,在此基础上进行了改造方案的设计,保留了原机床的主体,更换了数控系统。经分析,此次改造增强了系统各轴的稳定性,提高了主轴转速,且扩大了加工范围。     

永磁直流电动机的有限元分析

采用Visual Basic语言,编制了有限元分析软件,并对永磁直流电动机进行空载计算．得出了空载状态下的磁场分布图和气隙磁密分布曲线,并提出了减少电动机漏磁的改进方法。     

苏氨酸氮甲基化及量子化学计算研究

采用还原胺化法将苏氨酸成功转变成了其氮二甲基衍生物,通过1H-NMR和13C-NMR证实了其结构,采用量子化学方法在DFT-B3LYP/6-31G*水平上计算了该化合物的反应热、电荷分布和前线轨道能级。     

The Politics of Value in French Funeral Arrangements

This paper draws upon the history of the funeral market over two centuries to examine three major devices which have played a central role in the funeral economy, both in terms of defining the nature of the ‘goods’ and their attendant value but also in regulating the relations between the Pompes Funèbres and the other institutional actors involved. It highlights the ways in which these devices provide a ‘politics of value’ performing the articulation between the formatting of economic value and the pursuit of political concerns. First, observing the constitutional phase of the private industry, it examines the ‘system of the classes’ as a central device of managing dissonance between conflicting interests. Then, a historical jump leads us to half way through the twentieth century to the market infrastructure formed by the management of ‘care for the deceased’. As a third point, the exponential development of death insurance in recent years appears as an expression of rationalization of funeral arrangement. The analysis of the market devices will highlight an essential property, that is, the incorporation of a ‘calculation formula’ which set up both the profit sharing and the handling of moral and political issues.     

CALCULATING ECONOMIC LIFE

The rediscovery of the economy as a legitimate object of sociological and cultural enquiry is in full swing. This is long overdue, and follows a remarkable neglect of such issues for many decades. Organization theorists, sociologists and others have long studied organizations, institutions and networks. But a focus on the constitutive or performative role of calculative practices, and their role in the formation of markets and market relations, is more recent. This paper endorses much of the spirit of this recent rediscovery of the economy and economic relations, and suggests a framework for taking forward this overall agenda. First, the paper offers a brief reminder of the curiously punctuated history of sociological concerns with economic calculation. Second, it draws attention to the specificity of accounting as one particular mode of calculation, and reviews the range of studies that have sought to understand and analyse its constitutive capacities. Rather than appealing to economics as the sole or primary constitutive machine for the construction of the economy, it suggests a more differentiated and nuanced view of the range of expertises and modes of calculation that constitute the economy, markets and associated modes of power. Finally, the paper argues for a particular way of analysing the economy and its constituent practices. Most generally, this means suggesting a focus on the governing of economic life, the linkages and interdependencies between calculative practices and programmes for governing, and the assemblages formed.     

《计算方法》课程教学改革的探索与实践

《计算方法》课程是数学学科中重要的一门分支课程,对于培养学生分析问题、解决问题的能力有着重要的意义,也为其他科学的研究发展,提供了简洁明了、更直观的解决手段。由于目前各个学校的师资、硬件设备存在着不足,大多采用和其他数学基础课一样的讲授模式,普遍仅仅注重理论知识和方法的讲授,缺少实际应用的指导,造成了学生解决实际问题的能力较弱的情况。本文针对《计算方法》课程目前存在的问题,结合二十多年的教学经验,提出了本课程一系列的教学改革思路。     

谈二重积分计算中的教材处理

备课是教学中的重要环节,教材处理是备课中的重要组成部分。以二重积分计算中的教材处理为例讨论教材处理过程中应该注意的问题,以进一步加深教师对于教材处理的理解,提高教学效果。     

数控车锥体零件编程R值巧算方法

文章针对FANUC系统数控车床锥体加工编程格式指令G90、G92、G76中R值的技巧性计算,使编程人员在程序编写时能够快速、准确计算出该值,避免了复杂耗时且容易导致不精确的计算。具有事半功倍效果。在实际编程应用中准确、灵活、方便、好用,深得业内人士的认可。具有较高的参考价值。     

工件的定位误差分析及计算方法

分析了定位误差的概念及产生原因,给出了定位误差的5种计算方法：矢量合成法,几何分析法、图解法、全微分法、尺寸链法,为正确选择定位误差的计算方法提供了依据。