衬砌混凝土的裂缝成因及修复方法

隧道工程衬砌结构由于长期处于复杂地层中,衬砌结构混凝土除了受到周围土质对其挤压作用外,还受到非荷载因素的影响,从而导致衬砌内表面出现类型各异的裂缝。文章介绍了隧道衬砌结构在非荷载作用下产生裂缝的原因,以及适用于裂缝修复的技术方法。     

浅谈高校机房管理与维护

当前,各高校规模都在不断扩大,高校计算机机房也随之不断增加,学校机房的硬件设施也越来越好。高校计算机机房是教学,培训,科研的重要场所,为了能使其更好的服务于教学,保障科研工作和培训工作的进行,让机房的最大限度的发挥其作用,对机房的管理将是一个挑战和机遇。文章从设立制度、设备采购、日常管理、软硬件维护等方面介绍机房管理的方法。     

Centered but not Caught in the Middle: Stepchildren's Perceptions of Dialectical Contradictions in the Communication of Co-Parents

The researchers adopted a dialectical perspective to study how stepchildren experience and communicatively manage the perception of feeling caught in the middle between their parents who are living in different households. The metaphor of being caught in the middle is powerful for stepchildren and this metaphor animated their discourse. A central contribution of the present study was to understand the alternative to being caught in the middle and what this alternative means to stepchildren. Reflected in the discourse of stepchildren is that to feel not caught in the middle is to feel centered in the family. Stepchildren's desire to be centered in the family was animated by the dialectic of freedom-constraint, which co-existed within the contradictions of openness-closedness and control-restraint. These contradictions are detailed in the analysis, along with advice to parents from the perspective of stepchildren. Implications for the interaction of stepchildren and their parents are discussed.     

体能训练与保持游泳行进时的身体姿势

本文通过文献资料法与教学实践法,对游泳训练过程中的体能训练与保持行进时的身体姿势之间的关系进行分析和探讨,强调了在游泳技术教学和训练中,正确实施体能训练对保持游泳行进时的身体姿势的合理性、有效性和重要性。     

利用XML技术实现异构数据库数据转换

随着Internet的快速发展,本地数据库需要借助Web相互交换大量的数据,而数据结构的不一致又给交换带来了问题。XML由于自身的优点就成了解决这个问题的好技术,本文详细介绍了如何以XML为中间数据实现交换的方法。     

提高DHCP服务器安全性的若干策略

目前局域网在众多单位已广泛使用,其网络管理现状是让DHCP服务器为相应的终端机分配相应的TCP/IP地址。这种方式在一定程度上减轻了网管人员的维护工作量,提高了网络的安全性。但由于计算机病毒、计算机犯罪和管理员意外事故的发生,都有可能对DHCP服务器的安全性构成威胁。本文通过启用DHCP审核记录、制定DHCP管理用户和对DHCP管理用户进行限制等方法在现场长期实际应用中在不增加网管维护工作量的前提下,使得DHCP服务器运行的安全性获得一定程度的提高。     

关注校园暴力的旁观者

旁观者是指某起事件的知情者、目睹者及干预者,根据其行为类型可以分为四类：协同欺负者、煽风点火者、置身事外者和保护者.旁观者的行为受到四个因素的影响：旁观者效应,与受害者、施暴者的关系,社会规则以及自我效能感.而对于旁观者校级不作为的行为,亲社会反应五步模型和计划行动理论分别给出了理论的解释.发挥旁观者在校园暴力干预中的积极作用,需要评估他们的行为、建立明确的干预规则与社会期望,并建立保护机制.     

电视台硬盘播出系统的使用与维护

分析了电视台硬盘播出系统的原理及使用中问题的处理及维护。针对具体操作中遇到的实际问题给出了解决思路和办法。     

运用灰色关联分析湖南经济的增长因素

影响区域经济发展的因素有很多,各个因素对其影响的程度也不完全一样。如何避重就轻,扬长避短是每个区域经济发展所关注的。引用灰色系统的分析方法,从投入因素、产业因素,制度因素、消费因素等四个方面分析影响湖南经济增长的关键因素。结果表明,当前湖南经济的增长以产业因素和消费因素为主要增长因素,投入因素也产生了很重要的拉动力,制度因素的影响不大。在以后的发展中必须重视产业因素、消费因素以及投入因素。加快工业和第三产业的有序发展、提高对重点经济部门的投资、优化市场环境,刺激消费。     

Interorganizational information systems visibility and supply chain performance

Despite growing emphasis on the importance of supply chain visibility, few companies to date have fully benefited from the information resources of their supply chain partners. A review of existing literature about supply chain visibility reveals that there are two essential forces at work, namely (1) collaborative behavior – i.e., firms willing to share information with supply chain partners in order to leverage social capital, and (2) opportunistic behavior – i.e., firms wanting to maintain some degree of information asymmetry in order to manage the behaviors of their supply chain partners. In order to identify the antecedents of IOS visibility, our operational definition of supply chain visibility, the two theories – resource dependence theory (RDT) and relational view (RV) – are used to cobble together a set of variables in a framework to investigate their relationships to IOS visibility. The data used in this study was collected from 124 intermediate component manufacturers in three different manufacturing industries. The results show that IOS visibility positively influences overall supply chain performance, as measured by operational performance. Regarding the antecedents of IOS visibility, factors including asset specificity, interorganizational trust, complementary resources, and joint governance structures are significant, whereas environmental uncertainty and interdependence are not significant.