二茂铁的合成方法

本文总结了二茂铁从发现至今的七种合成方法,并简单评述了各种合成方法的优缺点。     

初等r-循环矩阵的几个性质

给出了初等ｒ－循环矩阵可逆的充要条件及逆矩阵的表达式;对奇异的初等ｒ－循环矩阵给出了Ａ的一个ｇ－逆Ｇ（满足ＡＧＡ＝Ａ,ＧＡＧ＝Ｇ）及Ｍｏｏｒｅ－ｐｅｎｒｏｓｅ广义逆矩阵的表达式．     

A gold key to initiate a new situation in family planning work]

Because of the popularization of a responsible agricultural production system, the livilihood of peasants has been improving greatly, while the demands and needs of the general public are also increasing at the same time. Still under the influence of the traditional belief of carrying on one's family line and emphasis on having male children, married people prefer to have more childre, and the birth rate is now rising again. In order to solve this new problem, we need to teach the peasants national policies on population, land utilization, and food supply. In order to initiate a new situation in family planning work, we need to control this "gold key" of ideological education and propaganda. The emphasis should be placed on ideological education for cadres at all levels as well as the general public in order that they may understand the Party's strategy. Education on the national strategy should be combined with material interests of the peasants, and reward and punishment in production should also be linked up with that of family planning. Social measures are needed to reduce economic burdens of the peasants, offer better treatment for single-child households, and provide adequate care for old and retired people. Family planning projects should be consolidated and improved. Scientific management, facilities and techniques for birth control, compensation for working personnel in family planning, and other practical problems deserve immediate attention and solution.     

Analytical network process for software selection in product development: A case study

Application of software for manufacturing processes is one of the resolutions many enterprises have resorted to in the 21st century. This has been a result of increased complexity of products, globalization, rapid changes in technology and so on. The idea was that application of software especially for product development would increase the competitive advantage of industry nevertheless the irony has been that most of the investment in software has not achieved the expected results. We carry out a case study to introduce a methodology, the analytical network process as a multiattribute strategic decision making approach to help in the selection of appropriate software to suit the product development process of a particular product.     

Energy conservation through resource-aware movement in heterogeneous mobile ad hoc networks

Energy conservation in mobile ad hoc networks is of paramount importance because most mobile nodes usually have very limited energy supply. Previous research on this issue focused on the design at the network or MAC or physical layer. In this paper, we study this problem from the new perspective of node mobility, i.e., analyzing the impact of node movement on energy conservation. In particular, armed with the inherent resource heterogeneity in mobile ad hoc networks, we propose a novel resource-aware movement strategy to make better use of some powerful nodes to achieve energy conservation. We also formulate the resource-aware movement as a NP-complete distance-constrained least-cost (DCLC) routing problem and propose an efficient heuristic solution. Extensive simulations have been used to demonstrate the effectiveness of the proposed schemes.     

A Conceptual Model for Researching the Creation and Operation of Supply Networks1

This paper presents a conceptual model for the creation and operation of supply networks. Existing conceptual research relating to interorganizational relationships and networks is reviewed in terms of its relevance to understanding supply networks; this research is drawn from the fields of strategic management, channel management, industrial marketing and purchasing, organizational behaviour and supply‐chain management. The different perspectives each field has on networks are highlighted. Contributions made by each in assisting to understand supply networks are discussed and synthesized. Findings from an exploratory survey are used to structure the design of a conceptual model for analysing the processes involved in the creation and operation of supply networks. The authors identify nine different types of networking activities and discuss the nature of these activities in the context of supply. Four different types of contextual factors relating to supply networks are identified. The model is tested in eight in‐depth case studies and a validating survey of 58 focal firm networks. It is concluded that it provides a robust structure that enabled complex, cross‐case analysis of multi‐variable, multi‐disciplinary data from interorganization product/service supply networks, but that further testing by other researchers is required.     

会议外交与中国参与全球卫生治理的思考

在全球卫生领域以大型会议为代表的国际会议外交已成为全球卫生治理的一种重要形式和载体。文章梳理了全球卫生治理中会议外交的两方面体现,一是以国际会议为代表的会议外交与全球卫生治理,二是以国家行为体为代表的会议外交与全球卫生治理,并进一步归纳了会议外交促成的全球卫生治理进程,包括多次会议促成了全球卫生安全的国际规则《国际卫生条例》,以及历经多年会议磋商促成了全球人口覆盖范围广的《烟草控制框架公约》。中共的十九大报告中对外交工作和健康中国战略有了明确表述,由此需要卫生与外交工作者审时度势、认清角色,通过会议外交表明态度,并以全球卫生会议外交为起点,促进国内立法接续。     

铝钢异种金属CMT焊接变形研究

针对目前使用冷金属过度焊（CMT）对铝钢异种金属薄板进行焊接时,存在焊接质量差,焊接热变形及使用性能低等缺点,对薄板件焊接过程采用SYSWELD软件进行模拟。通过不同的试验参数进行组合,得出金属薄板在X,Y以及整体方向上的焊接变形量,分析不同焊接参数对焊接热变形的影响规律。结果表明：在达到焊接要求的前提下,应尽量减少焊接时间和焊接电流;在一定焊接电压范围内,焊接电压越大,相同时间内焊接变形量就越大,Y方向焊接变形值约为X方向的1.5倍;为了避免焊接变形量过大,宜选用相对较大的焊接速度。     

“学习投入”与“学习性投入”的关系辨析

“学习投入”与“学习性投入”均是以学生为主体的研究,由于两者中文相似、英文相同,容易混淆,所以有必要澄清两者间的差异及联系.研究发现两者在研究目的、理论、方法、应用及相关研究方面均有差异,但两者在研究内容、研究方法及理论基础方面又存在一定的继承性.可见,两者既有联系又有区别,学习性投入是对学习投入的发展,且其研究内容包含学习投入.     

文化软实力视域下的地域文化与大学文化融合研究

我国当前正处于社会转型期,将地域文化与大学文化进行有效融合,是未来一个阶段培育社会主义核心价值体系和提升国家文化软实力的有效途径。在分析地域文化和大学文化的内涵和特征的基础上,阐述了地域文化与大学文化融合的作用机理,最后提出推进地域文化与大学文化有效融合的路径。