电力建设法制环境的调查与思考

通过到基层电力企业厂、局考察了解,目前电力事业呈现稳步快速发展趋势,但电力建设面临的法制环境还不尽人意。如执法体制不顺,执法难以到位,部门各自为政,支持配合不够:阻工现象严重,延误建设工期;冲击电力企业,扰乱工作秩序;设施破坏严重,危及电力安全,经济损失巨大等等,为此提出了一些改善环境的意见和建议。     

输电钢管杆稳定性分析的阶梯折算法

应用一维非均质体结构的阶梯折算法理论,建立了输电钢管杆的数值分析模型,推导了钢管杆的整体稳定计算方法,算法运用计算机易于实现,解决了荷载和刚度沿杆体变化的复杂杆结构整体稳定二阶计算问题,在电网工程建设和设计中有较好的实用价值。     

Cultural vs. operational market orientation and objective vs. subjective performance: Perspective of production and operations

The relationship between market orientation and organizational performance has been the focus of many studies for the last few years. The conclusions reported are very diverse and even contradictory. This ambiguity is reinforced to some extent by the high degree of methodological heterogeneity in the definition and measure of market orientation and organizational performance and the empirical formalization of the relationship between both concepts. This study tackles this question by comparing different methodological approaches. Three key aspects are considered: (1) cultural and operational approaches for measuring market orientation; (2) objective and subjective measures of performance; and (3) the source of information in the organization, specifically the perspective of production and operations. The results obtained from a sample of Spanish industrial firms show a stronger positive relationship for operational market orientation and subjective performance. Moreover, the adoption of ‘operational recipes’ of market orientation by the production and operations function seems to improve organizational performance regardless of the existence of any cultural support for market orientation.     

一起127.0×9.19mm IEU G105内涂层钻杆刺穿事故原因分析

对一起 12 7.0× 9.19mmIEUG10 5内涂层钻杆刺穿事故进行了调查 ,对刺穿钻杆的裂纹形貌进行了断口微观分析和金相分析 ,对刺穿钻杆的材质进行了全面检验。认为钻杆刺穿失效性质属于早期腐蚀疲劳破坏 ,井内泥浆pH偏低且含有较严重的腐蚀介质 ,最终导致钻杆产生早期腐蚀疲劳裂纹而失效     

创新驱动产业转型升级研究——基于中国1998-2016年省域面板数据

为了探究创新驱动产业转型升级的作用机制,构建了创新投入与创新产出对产业转型升级内涵质量与外显效应的影响模型,并提出研究假设。基于中国1998-2016年省域面板数据,借助Eviews 9.0计量软件,采用固定效应模型进行实证研究。结果表明,所提出的研究假设均得到验证。创新产出对产业转型升级内涵质量具有积极影响,创新产出的各表征变量(专利授权数、技术市场合同成交金额、新产品销售收入)每增长1%,产业转型升级内涵质量的表征变量人均国内生产总值将提高0.014 8%～0.051 1%。创新投入对产业转型升级外显效应具有积极影响,创新投入的各表征变量(R&D经费内部支出、R&D人员全时当量)每增加1%,产业转型升级外显效应的表征变量产业结构层次系数将提高0.007 1%～0.010 5%。因此,创新能够驱动产业转型升级,但创新投入与创新产出对产业转型升级的影响机制并不相同。研究结果为创新驱动产业转型升级问题的研究提供了一个新的研究范式,对实施创新驱动发展战略、促进产业转型升级有借鉴意义。     

资源环境约束下中国经济增长效率的异质性研究--基于Sequential Malmquist －Luenberger指数的分析

本文采用SML指数法测算了1998～2011年期间全国各地区的生产率指数和环境技术效率,进而在空间经济学框架下提出了经济关联、知识关联、规模收益和交通运输条件等可能引起效率集聚的因素,并运用“系统广义矩估计法”对这些因素的作用方向与方式作了实证检验。主要结论有：我国经济增长效率的空间分布具有明显集聚性;有限的技术效率是我国省域经济增长效率提升中的“短板”;中、西部地区具有以规模扩张为主要方向的粗放增长方式;经济关联、交通运输条件及产业结构等因素成为提升技术效率的“切入点”;FDI和资本密集型禀赋结构在经济增长效率提升中的作用具有“两面性”;我国省域经济增长效率表现出一定的趋同和溢出现象。     

Linkages between creativity and intention to quit: An occupational study of chefs

Human resource issues persist as a vexation for tourism managers. Foodservice is a core component of many tourism destinations and attractions yet the foodservice labour market is historically volatile. This article reports on the findings of a job satisfaction survey of chefs working in Australia's tourism and hospitality industry. This study's aim is to determine empirically whether there is a positive relationship between creativity and job and occupational satisfaction. A customised instrument is designed to mitigate the shortcomings of generalising scale items and findings of generic job satisfaction surveys to a single occupation. This paper focuses on identifying a range of dimensions of job satisfaction and occupational attributes connected to creativity and its associated dimensions. Reliability and data reduction analyses were conducted to validate the construction of composite ‘creativity’ variables for the basis of further comparisons. The findings indicate that the sample ranks creativity more highly than working conditions and that there is a clear relationship between creativity and both organisational and occupational satisfaction. Results vary as a function of gender. In conclusion, theoretical and practical implications for occupational and tourism management are discussed.     

Food industry structure in Norway and Denmark since the 1990s: Path dependency and institutional trajectories in Nordic food markets

Structural changes in Norwegian and Danish food industry since the 1990s is analysed as a path dependent response to the neo-liberal turn. Norway entered the 1990s as a protected market and Denmark as case of an export oriented industry. These developmental strategies are rooted in early 20th century industrialisation and influenced by institutional transformations in the 1990s, such as EU and WTO. Mergers and acquisitions (M&A) are studied in the context of changing political environments. Explaining two different trajectories, we combine path dependency theories and a Polanyi inspired ‘varieties of capitalism’ framework with corporate strategy theories on food industry M&As. We identify two different types of path dependent development, a self-reinforcing in Denmark and a transformative ‘breaking point’ in Norway.     

并行环境下Java哈希机制的对比及重构

针对并行环境下出现的非线程安全问题,以哈希机制的Hashtable和ConcurrentHashMap的线程安全问题为切入点,设计了可改变线程总数和读写线程数的测试程序,分析了线程安全的ConcurrentHashMap和Hashtable的性能差异。根据性能差异,设计了从Hashtable到ConcurrentHashMap的程序自动重构插件,进而在Hashtable封装数据的情况下,通过对比传统多线程处理方式和Java8中的并行流处理方式的性能差异,分析了流处理方式相对普通多线程处理方式的高效性。对比结果显示,ConcurrentHashMap在并行程序中的性能要优于Hashtable。研究结果为多线程程序开发提出了解决非线程安全提供了较为可行的新思路,对于并行编程具有借鉴意义。     

基于Node.js中间层Web开发的研究与实现——以微信图书借阅平台为例

针对Web研发领域一直面临前后端耦合问题,在充分分析传统的互联网前后端Web软件开发的基础上,提出了引入Node.js作为中间层来解除前、后端之间耦合关系的新解决方案。设计了新的架构模式指导Web软件开发,从而达到提高开发效率、提升代码灵活性、明确开发人员工作职责等目的。基于此研究,真实开发了一个基于微信的图书借阅平台,并以此作为可行性检验的依据,该图书借阅平台使用微信作为前端执行环境,提供图书借阅、图书归还、图书入库、图书浏览功能。系统采用B/S架构,Node.js中间层和后端程序在服务器中运行,用户关注微信公众号后,可以通过微信聊天窗口接收服务器端讯息,也可以通过公众号菜单导航到前端界面,完成图书借阅分享操作,交互方式高效简洁。