共查询到20条相似文献,搜索用时 609 毫秒
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对UG参数化设计的定义、方法进行简单介绍,主要对UG在参数化设计过程中的常见问题及注意要点进行分析讲解,并针对问题提出相应的解决方案。 相似文献
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我国大多数配电间的实际运行条件与管理水平比较低,传统的变压器测量采用人员定时巡回手工抄表来记录耗电情况,具有工作强度大、效率低等缺点。为此,现进行了以单片机为控制核心的变压器电气运行参数测量系统的设计,阐述了系统的硬件结构原理和软件设计。该装置利用交流直接采样技术和单片机8051先进的存储功能对变压器完成了电气参数测量,对变压器运行参数如电压、电流、功率、功率因素等进行了记录,实现了测量、存储、显示、打印于一体的变压器参数测量系统。 相似文献
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在制图软件中,参数化设计方法的研究已成为研究和开发的热点,参数化建模,参数化分析,逐渐成为一种趋势。而基于VBA的SolidWorks二次开发应用更为普遍,简单的开发环境让很多用户使得繁琐、机械的日常办公实现自动化,从而提高办公效率。本文在参阅了大量对参数化设计的文献基础之上,以液压缸的参数化设计为例,进一步探讨了参数化的发展和过程。并根据参数化过程中的API函数来阐述设计方法,使得设计人员能够从繁琐的绘图工作中解脱出来,集中精力选择和优化设计参数,以提高产品质量,缩短产品设计周期。 相似文献
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Theresa M. Welbourne 《人力资源管理》2009,48(3):339-340
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Patricia Werhane 《Employee Responsibilities and Rights Journal》1990,3(2):87-90
Workfare programs are state-instituted programs that require able-bodied persons with children of school age who wish to claim welfare payments to participate in job training programs, and, eventually, to enter the work force. The philosophy of workfare is based on the value of work and the goal of self-determination. However, as a mandatory program for welfare recipients, workfare requires of those recipients certain duties which, according to those who challenge workfare, interfere with the freedom to choose what one will do with one's life. Whether some form of workfare will be adopted as part of our national welfare system remains to be seen. What the debate about such a program suggests is that welfare, in itself, by ignoring the necessity of security and education for full human agency, neither satisfies basic needs nor prepares its recipients for any life other than that of dependency. With all its difficulties workfare nevertheless presents an alternative to welfare that, at least in theory, more closely identifies its purpose with the values of our society. 相似文献
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In this paper we argue that the impact of external scale economies and diseconomies on city size is not nearly as clear-cut as it is tacitly believed in urban economics. Similarly, city-size distortions are not caused by externalities alone. Indivisibility and nonreplicability, which prevent establishing the “right” number of cities, may represent a source for city-size distortions which can be stronger than the standard resource misallocation resulting from external scale economies and diseconomies. It follows that a direct population dispersion policy is not just an inferior substitute to Pigouvian taxes and subsidies but rather a useful complement. 相似文献
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