电气继电保护装置的检修和运行维护探讨

在当前社会经济高速运转的时代,电力资源的需求量与日俱增,电力安全问题也越来越受到人们的重视,这就对电气继电保护装置提出了更高的要求,加强继电保护装置的检修和运行维护,可以极大地提升电力系统的运行效率,并保证电力运行的安全性.但是,就目前情况来说,我国电气继电保护装置的运行过程中还是存在一些故障问题,需要采取措施加以改进.基于此,本文将围绕电气继电保护装置运行中的常见故障展开分析,然后对继电保护装置的检修方法以及运行维护措施进行了详细的探讨与研究,以供相关人员参考.     

Shareholder Activism and Voluntary Disclosure Initiation: The Case of Political Spending

Demand for disclosures on environmental, social, and governance (ESG) issues has increased dramatically. Using corporate political spending disclosures as our setting, we conduct a detailed inquiry of 541 political spending‐related shareholder proposals from 2004 to 2012 to highlight the role of shareholder activism as a mechanism to motivate ESG disclosure. Unlike earlier studies, we examine both proposals that went to a vote and proposals that were withdrawn by the activist, allowing us to assess more comprehensively the success of shareholder activism. We find that 20 percent of firms targeted by disclosure proposals begin disclosing in the subsequent year, although implementation rates vary by proposal type—8 percent for proposals subject to a vote versus 56 percent for proposals withdrawn. The sponsor is also important: unions and public pension funds are less likely than other activists to target firms with agency problems and are less successful in having proposals withdrawn, and the implementations they obtain are viewed more negatively by the broader investor base. Our findings highlight shareholder proposals as one mechanism through which investors can successfully express their preferences for corporate disclosure policies. Given activists' long‐standing interest in environmental and social disclosure policies, we believe our findings generalize to a broader set of ESG disclosures.     

互联网金融规制与市场有效性改善*——来自中国网络借贷行业的证据

中国的互联网金融经历了一个先创新发展后监管规制的过程，本文通过对网络借贷行业的实证研究，分析监管规则的出台实施对新型互联网融资市场有效性的影响。实证结果表明，网络借贷平台资金的银行存管、持有ICP证等强制性规定缓解了投资者、平台企业与借款人之间的信息不对称，对克服早期平台间通过竞相承诺高回报率来吸引投资者导致的“柠檬市场”问题、对解决网贷市场上缺乏平台风险性高低有效信号的问题都起到了正向作用，有助于互联网融资市场的有效性提高。     

Risk-Adjusted Discount Rates and Projects of Unequal Lives

When evaluating mutually exclusive projects of unequal lives and with differing risk, standard approaches such as the constant chain of replacement, lowest common multiple and equivalent annual value techniques are usually applied. In using these techniques to rank projects, a critical issue is the manner in which uncertainty in the cashflows is resolved through time. We explore the applicability of net present value techniques to the problem of valuing assets with unequal lives, emphasising the use of equivalent annual value and lowest common multiple methods, and the correct choice of discount rate. Our results have direct application to practical capital budgeting problems such as choosing the optimum lifespan for a single asset, choosing between assets with different lifespans, and deciding whether to "run an asset for another year".     

关于编写期货投资分析实验教材的思考

该文主要介绍了期货投资分析实验教材编写的意义、框架和思路,以及该实验教材在编就后所体现出的特点,和我们在编写过程中的一些思考。     

堵住信用卡套现出路

近来，由于部分城市刷卡套现增多，已经引起监管部门及商业银行的高度警惕。部分银行已经对刷卡交易进行跟踪监控，以防范愈演愈烈的信用卡套现风险。     

An Australian Response to Recent Developments in the Market for Audit Services

Where the quality (both competence and independence) of an audit is tested, often in the circumstance of a corporate failure, auditors frequently have good defences as to their competency but rarely do they have equally convincing defences for the objectivity of their decisionmaking or the independence of their audit. This paper recommends that large audit firms establish an independence board with the authority to define, review and decide upon all threats and potential threats to independence. It would also have responsibility for quality-control and educational programs in respect of audit firm's independence decision-making.     

鸡蛋壳制备乙酸钙冰雪融化剂的研究

以鸡蛋壳为原料,对高温煅烧分解蛋壳、中和法制备乙酸钙(CA)的最佳反应条件进行了研究,试验结果表明:在所选参数下,其产量最大.即反应温度为50℃,配料摩尔比为CaO:HAc=1:2.8,乙酸浓度为15 mol/L,石灰乳浓度(以氧化钙计)为1.3 mol/L.产品融冰试验表明:CA在环境温度为-10℃以上使用时,其融冰效果较好.     

南中国海次区域自由贸易区可行性探讨

随着亚洲区域经济合作浪潮的高涨,中国大陆港澳台(以下简称四地)区域经济合作作为其中重要组成部分,日益引起国际关注.四地实质上的相互密切经贸关系为四地实现某种形式的区域经济集团奠定了深厚的基础,但由于四地特殊的政治关系,使得四地经济一体化进程充满坎坷,台湾与祖国大陆甚至至今尚未实现经贸关系正常化.面对因不能深化经济整合而无法产生的政治经济利益,诸多专家学者和爱国人士提出了各种变通或过渡性方案,其中有关推动"南中国海次区域经济合作"的方案是提得最多和最重要的.这类方案形式多样,虽然在区域划分和内容设定上有所不同,但其共同实质是一样的,即在南中国海地区选择一定范围的行政区划(例如:粤港、闽台、粤港澳、闽粤港澳台、闽粤琼港澳台等等),组成某种形式(以契约方式固定)的经济合作体,实行不同于整个国家的独立经贸政策.这种次区域经济合作构想在过去有较多的带有理想化色彩的设计和提法,但近年来被基本锁定在"自由贸易区"的范畴之内.这种构想的目的在于:1.深化区内产业分工和经济合作,加速提升区域国际竞争力;2.整合中国最具经济实力的地区,应对世界经济一体化和亚洲区域经济合作;3.以次区域合作推动整个中国的区域经济一体化,最终达成国家统一.     

The economics of shortage and problems of reform in Chinese industry

This paper employs the economics of shortage framework to examine post-Mao reforms in Chinese state-owned industry. Performance has been disappointing because reforms through 1985 failed to fundamentally alter economic agent behavior. The “soft” budget constraints at the enterprise and local government levels continue to generate “quantity” and “expansion” drives. The resultant inflationary pressures have necessitated administrative interventions and thwarted reform progress. The Maoist legacy of active participation by local governments in economic management is high-lighted as a major obstacle to the elimination of paternalism in state-enterprise relations.