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.     

The heterogeneous relationship between board social ties and corporate environmental responsibility in an emerging economy

Firms in emerging economies are faced with multiple, incompatible institutional forces in their environmental activities. Which of these forces will be dominant and instantiated within an organization is partly determined by the social relationships that a firm maintains with external actors. This paper investigates the relationship between board social ties and the level of environmental responsibility undertaken by firms in China, an emerging economy, by categorizing board social ties into three types in terms of the three isomorphic forces in the institutional field (coercive, normative and mimetic). Drawing on institutional and agency theories, using a sample of listed firms in environmentally sensitive industries, and a generalized least squares regression method, the results provide empirical evidence that ties that are linked to coercive and normative forces (i.e., political organizations and universities) are related to a higher level of environmental responsibility; however, those that are linked to mimetic forces (i.e., industrial peers) have a negative association with environmental responsibility, which is mitigated by CEO power. These findings suggest that the heterogeneous effects of board social ties on environmental responsibilities experienced by firms in a context of environmentalism are at an early stage.     

设计部门现场管理的建设方案与实施

开展现场管理是提高企业管理水平、提高生产效率、提升产品质量、提升人员素质的有效途径.本文针对设计部门现场管理的建设思路与目标、实施过程进行了研究与实践,取得了良好的效果,为设计部门现场管理与建设提供了参考.     

生态护坡特点及关键技术探讨

随着我国基础设施建设深入践行"两山"生态环境理论,传统边坡防护不能满足新时代生态文明建设要求.文章介绍了植被对边坡的影响及岩质边坡生态护坡的常用方法,对岩质边坡的生态护坡特点进行了分析,对固土结构、基层材料、非生态装饰等关键问题进行了分析探讨,得到支护结构应与基层进行耦合分析、基层材料采用多孔材料有利于植被生长,基层填固应考虑与岩体嵌固附着作用,辅助装饰材料可达到较好的景观效果,具有一定工程社会意义,同时为类似生态护坡工程提供参考.     

工资对个人劳动供给的非线性影响：部门市场化程度差异视角

从市场经济体制的建立到经济社会高质量发展，我国不同部门市场化程度有所差异，劳动供给的部门异质性随之体现。基于中国劳动力动态调查数据，结合汉森门槛回归模型和劳动供给模型，依托部门市场化程度的差异性，文章探讨了工资对劳动力个人供给的非线性影响及其部门异质性。主要得出以下研究结论：第一，我国市场部门与公共部门劳动力的个人劳动供给有所差异。第二，工资与个人劳动供给呈现非线性关系并且存在部门异质性。实证分析结果显示，工资对个人劳动供给的影响存在三个"突变点"，工资门槛均使得工资"激励效应"加强并呈现逐步增加的趋势。第三，劳动供给的工资门槛存在性别、城乡和行业异质性。第四，随着年龄增长、人力资本积累，个人劳动时间供给趋于降低，签署书面劳工合同使得市场部门劳动力工作时间显著增加，而政治面貌显著影响公共部门劳动供给。总体来看，无论是市场部门还是公共部门，我国劳动力个人供给曲线均未"向后弯曲"，国民经济高质量发展、改善收入分配格局、提升居民幸福感等议题需持续关注。     

股价信息含量与投资-股价敏感性——基于融资融券的准自然实验

本文利用2006-2015年间的数据研究了融资融券对投资-股价敏感性的影响。利用融资融券作为股价信息含量的一个外生冲击变量,本文研究发现,我国A股市场确实存在反馈效应,融资融券政策的实施增强了标的公司投资-股价敏感性,这个结论在采用倾向得分模型(PSM)配对后依然成立,说明融资融券使股价融入了更多有利于管理层投资决策的信息。其次,融资融券对投资-股价敏感性的影响在机构投资者比例高、流动性高、处于新兴行业的这类管理层反馈效应更强的股票组中更显著。参照以往研究考虑了融资约束对反馈效应的调节作用,同样发现融资融券对投资-股价敏感性的影响在国有企业和规模较大的企业组中更显著。最后,融资融券交易规模越大,投资对股价的敏感性越强。     

How is Benevolent Leadership Linked to Employee Creativity? The Mediating Role of Leader–Member Exchange and the Moderating Role of Power Distance Orientation

Previous research has shown that virtuous leader behavior in the form of benevolent leadership has considerable impact on employee creativity. However, little is known as to how and under what conditions these constructs are linked. In the current research, we proposed and tested a moderated mediation model positing leader–member exchange (LMX) as a mediator, and employee power-distance orientation as a moderator of this relationship. Two studies were conducted to test our hypothesized model. In Study 1, repeated measured data collected from 284 Chinese employees in an information technology company demonstrated that benevolent leadership had a lagged effect on LMX. In Study 2, analyses of multisource and lagged data from 391 Chinese employees in 42 research and development teams, and their direct supervisors indicated that benevolent leadership was positively related to supervisor-rated employee creativity via LMX. In addition, the relationship between benevolent leadership and LMX was stronger for employees high in power-distance orientation. Theoretical implications of benevolent leadership’s research and practical contributions concerning promoting creativity in organizations where benevolent leaders prevail are also discussed.     

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。     

双向八车道水稳基层平整度控制技术要点

随着国内车辆的井喷式增多,传统的四车道高速公路难以满足通行要求,目前八车道高速公路日益增多,同时大家对行车的舒适度也有了较高的要求.本文依托江苏省五峰山路面22标工程实例,对双向八车道高速公路水稳基层施工平整度控制要点,主要从原材料及混合料级配的选择对平整度的影响、施工工艺控制要点进行重点介绍,以供修建类似工程参考.     

Sybase数据库的磁盘镜像及故障恢复机制

数据库的可靠性是权衡数据库系统安全性的重要指标 ,数据库容错技术和有关故障 (包括系统故障、存储介质故障 )恢复决定了信息系统设计的规模和性能 ,特别是随着系统大型化 ,对数据库系统的联机处理性能提出了较高的要求 ,在故障恢复期间仍需具备一定的在线恢复 ( Non-Stop Recovery)能力。本文从故障恢复、磁盘镜像等方面讨论了Sybase数据库的有关机制