ADSL常见故障分类及其处理

<正>ADSL故障分为用户端故障和局端(运营商)故障。局端故障较少,下面主要介绍用户端故障及故障处理。一、ADSL常见故障分类从ADSL终端用户使用的角度可以将ADSL常见故障分为线路故障、设备故障(主要是ADSL Modem或网卡)、软件故障。1.线路故障。(1)电话线故障或线路质量差:ADSL是以     

继电保护隐性故障下的电力系统连锁故障浅谈

由继电保护隐性故障引发的电力系统连锁故障会对电力系统产生极大的危害。通过对继电保护隐性故障发生的影响因素进行分析,评价隐性故障的重要性,并讨论隐性故障下的电力系统连锁故障,对其进行风险评估,找出系统薄弱环节,有助于对隐性故障采取相应的预防措施,降低隐性故障发生的概率,达到防止电力系统连锁故障发生或降低连锁故障发生概率的目的。     

浅谈变压器的运行检查维护及其故障处理

变压器在发生事故之前,通常都会有异常情况,因为变压器内部故障是由轻微发展为严重的。变压器的故障常被分为内部故障和外部故障两种。内部故障为变压器油箱内发生的各种故障;外部故障为变压器油箱外部绝缘套管及其引出线上发生的各种故障。文章主要分析变压器运行的检查维护及故障处理的方法,可供广大同行技术参考。     

谈农垦通信传输设备故障处理

农垦通信传输设备故障处理,其中包括常见故障处理的业务中断故障处理、复用段故障处理、通道层故障处理、误码故障处理等,以及对日常故障案例分析与处理。     

ASON跨域保护恢复技术分析

在多域AS0N网络中需考虑的故障场景包括域内故障和域间故障,域间故障又包括域问链路故障和边界节点故障。文章通过对多域ASON网络中的故障场景进行分析,提出了跨域保护恢复对RSVP-TE信令协议的要求,并给出了不同故障场景下RSVP-TE协议的信令流程示例。     

浅谈如何对汽车ABS故障的诊断

一、ABS故障现象 ABS故障的诊断步骤一般是：分析故障现象－初步直观检查－读解故障代码－利用工具仪器深入检查．确定故障部位和原因一一排除故障。常见ABS故障现象有：     

基于继电保护隐性故障的电力系统连锁故障探讨

继电保护隐性故障对于电力系统的正常运行有着非常大的影响,在我国电力系统中继电保护工作并没有达到相关的要求,那么就会使得继电保护隐性故障的数量明显增加,而继电保护装置的故障无疑会给电力系统的正常运行带来较大的影响,因此对于继电保护隐性故障而引起的电力系统连锁故障要较好的解决,本文将针对继电保护隐性故障的电力系统连锁故障进行分析以及探讨如何解决继电保护隐性故障的电力系统连锁故障。     

典型10 kV配网线路单相故障分析

电缆作为现代城市10 kV供配电系统网架的重要组成部分,其发生故障时的影响并不局限于单一线路故障,而是需综合判断该电缆故障所引起的系统内相关电气量的变化,分析其对系统内其余线路的运行影响。文章通过分析一起发生在城区10 kV不接地系统中的配网电缆线路单相接地故障及因该点接地故障引起的两起继发性故障,收集其故障发生时故障特征反映、电气量变化、保护动作变化,结合该起典型故障发生后的故障处理情况,分析其故障发生过程、同母线配网线路的系统波动影响及由此可能引发的一些继发性故障,希望能够为电力工作人员在电缆故障快速查找定位、故障原因分析、线路运行维护带来一定启发,为配网提高供电可靠性提供帮助。     

基于模糊推理的变电站设备故障信号分析与合并技术

为快速区别变电站设备故障信号类别和实现同类故障信号合并,本文借助历史工作经验事先划分故障信号类别、整理关联的故障内容和建立模糊规则集,通过引进模糊隶属度函数实现同类故障信号合并。该技术的实施可以针对故障信号进行规范和管理,提高处理故障信号的人工智能性。     

浅析农用拖拉机常见故障的检测与排除

拖拉机的故障是多种多样的,产生故障的原因也较复杂.有些故障是较长时间内逐渐形成的;有些故障是在短时间内偶然形成的.一种故障可能表现出多种征象,一种征象可能反映多种故障.这样就给故障分析带来了一定的困难.对于某一故障,原因可能是多方面的,但由于拖拉机是许多零件协调工作的统一体,它们之间的有机联系决定了各种故障原因存在着一定的规律性.因此,可根据拖拉机的具体情况和使用经验,通过科学的分析判断查明故障的原因.     

中国行业报营销策略研究

文中立足中国行业报现状,存在的问题及原因,提出中国行业报营销策略的研究.通过中国行业报理论的四要素阐述.根据现代市场营销理论的研究成果.把商品和服务整体地销售给消费者的一系列经营管理活动,展现了行业报面临的形势和挑战.文中针对行业报面临的形势、挑战和现状,提出了行业报的发展趋势及主要对策.     

武汉光电子产业标准与专利现状及推进策略研究

在全球市场竞争中,技术标准已成为企业抢占国际分工的关键环节及重要手段。在信息产业领域,专利借助技术标准这一载体与平台,逐渐成为国际贸易的游戏规则及非关税壁垒,谁控制了专利,谁就可以控制国际市场和国际贸易,技术标准与专利的结合是发展的必然趋势。文章在调研的基础上,对武汉光电子产业的的标准与专利现状进行了分析,并结合实际问题,站在企业的视角,对企业最为关注的专利进入标准的问题,提出了在实际操作过程中应注意的一些问题及对策建议。     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

国内门户网站品牌塑造及模型构建——基于国内外门户网站的比较研究

互联网是全球化的虚拟化,虚拟体验直接影响顾客的认知与行为,从而影响网站的品牌。基于受众体验的国内门户网站品牌塑造模型的构建,是国内门户网站在参考国外先进的网站建设的成功经验的基础上,塑造适合国内门户网站的品牌策略和一项重要的竞争策略。     

中世纪的骑士精神及其衰落

在学习西欧中世纪骑士制度过程中,了解到了骑士制度在中世纪历史上所占据的历史地位。骑士制度被誉为"封建制度之花",是社会中坚力量,骑士精神对国王到最低等贵族的统治阶级产生了巨大影响。庄园经济的衰落使骑士制度逐步瓦解;战争的平民化和雇佣军的盛行使骑士队伍萎缩;基督教的腐朽弱化了"骑士精神";不适应军事和战争变革的需要,几个方面解释在政治和社会上拥有如此高地位的骑士阶层从繁荣到衰落的原因。     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

The clash of managerial and professional logics in public procurement: Implications for innovation in the health-care sector

This article addresses the enactment of public procurement and its influence on adoption and diffusion of innovation, using a case study of public procurement of a low-tech medical device innovation in Swedish healthcare. Based on interviews and documentation, the article illustrates the various perspectives of the different professions involved in the complex task of setting the requirement specification for the tender. The technology identities of the medical device (innovation) are constructed and negotiated by the actors: procurement administrators, health-care professionals and suppliers within the adoption space. Examining the enactment of the procurement process as part of the adoption space is a way to deepen our understanding of the social component within public procurement.     

浅谈纺织面料特性与服装设计的关系

面料、款式、色彩是构成服装的三要素.而每一次掀起服装改革浪潮的都是面料.文中阐述了面料与服装的搭配.要抓住面料的特点,与设计的服装款式相结合,借助面料的特点,突出设计主题.表现服装风格.     

Swedish tribalism and Tanzanian entrepreneurship: preconditions for trust formation

The aim of this paper is to explore the relationship between entrepreneurship and the structure of the periphery. The objective is to reach an understanding of the entrepreneurial process within the context of the periphery, which is traditionally seen as a poor environment. The paper considers the concept of peripherality and identifies a process of gravitation that drains higher order services towards the core. However, this deterministic model does not correspond with the realities of the Scottish Highlands. The paradox is that new businesses are being created that appear to use old redundant peripheral values such as tradition. It is argued that it is the social construction of the periphery that produces this post-modern change. The qualitative methodology indicates the emergence of a new spatial paradigm of aesthetic consumption. Two indicative case studies are presented which show that entrepreneurship is the creation and extraction of value from the environment. Their businesses are the commodification of non-material and aesthetic values. Further analysis of these data demonstrates that entrepreneurs interpret their own version of the environment, rather than merely reacting to it. In turn, they enact this interpretation which forms the basis of their businesses.     

科技是绿色建筑发展的基础

近年来,全球气候恶化,温室气体效应危害了全人类的生存环境。随着我国城市化进程的加速,相应的建筑物和设施将大幅增加,建筑能耗随之加大。一种能节约能源及资源、减轻环境负荷的绿色建筑应运而生,成为我国建设小康社会的必由之路。文章认为,日新月异的科技进步必然是绿色建筑发展的坚实基础和唯一途径。