螺旋振子谐振腔滤波器的设计与应用

简要介绍了螺旋振子式腔体滤波器的原理及设计方法，给出了一个100MHz滤波器实例和在频标比对器中具体应用电路。     

流通领域重点监测商品品类的筛选方法——以深圳为例的静态研究

在市场蓬勃发展、商品品种繁多、流通渠道多样的情况下,采取有效的方法确定需要重点进行质量监测的商品范围将有助于工商行政管理部门履行好国务院赋予的流通领域商品质量监测职能。本文以深圳为例介绍了一种静态的筛选方法。     

Stress and consumer behavior

Although stress research has received increased attention in the behavioral and social sciences, it has been virtually ignored by marketing researchers. This paper attempts to advance the stress perspective as a useful framework in consumer research. First, the author presents theoretical and conceptual foundations of stress research. Second, the author develops a general conceptual model of the causes and consequences of stress on the basis of theory and research. The model serves as a blueprint for presenting theory and research on stress, organizing and interpreting findings of consumer studies in the context of stress theory, and developing propositions for needed research. Finally, the author provides a research agenda to guide future studies in this area.     

Management under Stress and Cultural Differences

With cultural differences in perceptions of stressors and coping skills, how do managers make the job sound appealing to different types of workers？ This subject has been explorative investigated in Western countries, particularly in the United States. Very little work has been carded out in Asia. This Study has shown that there are specific job stressors and job stress effects in each culture. In addition, there is evidence of differences in stress strategy to face job stress attributed to culture. So, this context is the basis to research on the nature and magnitude of job stress experiences by people from different cultural backgrounds, and taking into account all the previous arguments. This study compares stress perception, stressful experiences and stress management strategies in studies of both Chinese and western managers.     

双层组合梁应力分析与试验研究

对由两种材料组合而成的梁的弯曲正应力计算方法进行了研究，发现由于连接件剪切面上存在较大的剪力，使上下层梁同时受弯矩和轴力的共同作用。在建立合理假定的基础上。提出了完全刚性连接和自由叠舍两种极端情况下的弯曲正应力计算方法，并制作了钢-铝两种材料楔块连接、自由叠合两种形式的双层组合梁进行了试验验证，结果表明理论分析与实验结果吻舍较好。     

Consuming stress: exploring hidden dimensions of consumption-related strain at the intersection of gender and poverty

Abstract

Consumer stress as experienced at the nexus of gender and poverty, has received limited attention in marketing and consumer research. This empirical study applies the theoretical lens of social stress to explore gendered aspects of poverty, consumption and marketplace activity. It demonstrates that for women in poverty, consumer stress is a relational issue, involving marketplace and interpersonal (dis)connections. In particular, it surfaces the hidden, often, nuanced power relations that place additional strain on women with limited finances, as they oscillate between marketplace and intra-household pressures. By applying social stress theory, the study offers a new way of thinking about the unequal social relations and associated consumption strains bound up with the disadvantaged position of an intersectional group of women experiencing poverty.     

节能灯照明系统谐波电流问题研究

随着现代电力电子和建筑智能化的迅速发展和普及,电网谐波污染的问题越来越严重。由于谐波危害很大,而且谐波源分布广泛,因此对不同谐波源产生的谐波电流应逐个分析。本文针对商业建筑中大量使用节能灯作为照明灯具的情况,结合工程实际,对25W以下的具有代表性的节能灯进行实验数据采集和分析,并得到重要结论。     

基于Multisim的555定时器与运放构成的矩形波发生器比较分析

为了详细分析目前比较常用的555定时器和运放构成的矩形波发生器,填补其他文章仅单单分析一种电路的空白,利用Multisim强大的仿真分析功能,结合理论计算,对这两种方波发生器进行输出电压特性、占空比调节、输出频率、电源电压范围等方面的比较分析,希望给制作矩形波发生器的读者提供一定的参考价值。     

产品市场竞争与资本结构的战略决策

“有限负债效应”理论指出,企业提高财务杠杆导致了产出的增加,但很多实证研究却难以支持这一结论。本文分析了在上游企业外部规模效应较强的情况下,企业债务融资战略效应为负的理由,证明了不存在外部规模效应是债务融资战略的重要条件。企业的融资行为深受财务危机的影响,其中企业规模、产业集中度、产品专用性、R&D支出和行业前景是决定财务危机成本大小的关键变量,因此,以财务危机成本为依据进行决策,企业会自我限制债务水平。由此,企业资本结构的决策应从产品市场竞争状况去考虑,这对我国企业融资决策有重要意义。     

振动应力筛选

本文介绍了振动应力筛选技术,讨论了建立振动应力筛选的益处,应考虑的主要问题以及应牢记的关键因素。