成长型资源型城市转型路径研究——以榆林市为例

成长型资源型城市良性运行是我国新型工业和城镇化的保障.为了避免成长型资源型城市陷入“资源诅咒”,文章从资源型城市的衰退路径分析入手,认为特殊的要素流动导致了资源型城市衰退路径的资本形成机制,提出成长型资源型城市经济转型成功的关键在于构建可递进的资本形成机制,完善规范资源收益、建设人才与创新递进机制和生态环境建设等保障手段,通过优化产业体系、参与区域分工和参与城市群建设,实现要素优化配置和对物质资本、人力资本的深度利用,最终走上不依赖资源的经济发展路径.     

When Will Employees Embrace Managers' Technological Innovations? The Mediating Effects of Employees' Perceptions of Fairness on Their Willingness to Accept Change and its Legitimacy

Innovation researchers have thoroughly discussed how attitudes toward innovation influence people's intentions to use it. Most prior research tried to explore employees' acceptance of technological change through the lens of change initiators; however, using a manager's or the “great man's” perspective to explain change recipients' reaction to an innovation is indirect and peripheral. This paper argues that innovation should be studied directly from the perspective of change recipients, and that their perceptions of fairness in the wake of an innovation become a key factor in their willingness to accept it. More specifically, this paper argues that the recipients' fairness perceptions mediate the impact of innovation characteristics (operationalized as “usefulness” and “ease of use”) and implementation approach on their acceptance and belief in the legitimacy of the innovation. Two studies investigated the hypothesized mediating effects of procedural fairness/outcome fairness. The field study was conducted in a real‐world technological innovation setting, but raised questions about whether the causal effect of the mediating model really existed. The scenario study was conducted in a semi‐experimental condition which had high internal validity and guaranteed the cause–effect relation. Hence, the research design of the two studies complemented each other. The multiple regression analyses using the criteria proposed by Baron and Kenny were used to test the mediating models in the paper. Moreover, both Sobel tests and bootstrapping methods were used to guarantee that the mediating paths do exist among the independent variables, mediators, and the dependent variables. Both the field study and the scenario study showed that most of our hypotheses were supported, and change recipients had strong psychological reactions to the innovation and how the innovation was implemented in terms of fairness perceptions. Change recipients' perception of procedural and outcome fairness mediated the impact of innovation characteristics and implementation approach on their acceptance of the innovation and the perceived legitimacy of the innovation. The results disclosed that the change recipients' fairness perceptions were a key step for their sense‐making process of an innovation and its implementation. The results also indicated that studying change from recipients' perspective, as well as trying to understand their fairness perceptions, can broaden our knowledge about change. Other theoretical and practical implications were also discussed.     

碳排放约束视角下产业智能化对区域经济差距的影响研究

本文利用2003~2019年中国省级面板数据,从碳排放约束视角出发,实证考察了产业智能化对区域经济差距影响的差异性和产业智能化影响区域经济差距的机制。研究表明,产业智能化对缩小全国、东、中和西部地区省域间经济差距具有显著的正向效应;进一步考虑碳排放约束,发现碳排放约束正向调节了产业智能化对区域经济差距的正向效应,西部地区由于自身产业结构和区位因素,抑制了产业智能化对区域经济差距的正向效应;最后,对产业结构升级的两个子维度在产业智能化和区域经济差距间的中介效应检验,发现产业结构升级的中介效应存在,且主要是通过产业结构高级化实现,产业结构合理化发挥的作用较小。     

LNG接收站计量撬设计探讨

系统介绍了计量撬装系统概念、组成及国内外计量相关的天然气计量标准,通过对天然气计量中流量计的简要分析对比,针对目前浙江LNG接收站贸易交接要求,选用气体超声波流量计计量撬装系统,并分析了浙江LNG贸易计量系统的工艺流程及计量管路尺寸设计的依据。     

大鼠脑缺血后缺血区VEGF表达变化及通心络的影响

目的观察大鼠脑缺血后缺血区VEGF mRNA及蛋白水平随时间表达的变化及通心络对其的影响。方法制备大鼠大脑中动脉梗塞局灶性脑缺血模型,采用RT—PCR法及免疫组化法检测脑缺血后每组实验动物不同时间缺血区VEGFmRNA及蛋白表达的变化以及通心络的作用。结果1、正常大鼠脑缺血后脑组织中VEGFmRNA表达很少,大鼠局灶性脑缺血后VEGF mRNA表达逐渐增强,3d达高峰,缺血7d后叉降至约正常水平。VEGF主要在神经元阳性表达,表达趋势与mRNA基本吻合。2、通心络高剂组VEGF mRNA表达显著增强（p〈0.01,p〈0.05）;通心络各组vEGF阳性神经元数量增加：结论局灶性脑缺血可促进缺血区内源性神经保护因子VEGF高表达;通心络可增强和延长缺血区VEGF高表达,发挥对脑缺血的保护作用.     

财政外溢下的地方政府公共服务提供——以教育为例

主流财政分权和公共服务提供理论在强调地方政府竞争效率的同时,较少考虑联邦体制与单一集权体制的制度差异,而且忽视了地方政府在提供一些公共服务时面临着巨大的财政外溢。考虑到我国单一集权的政体背景,应用多任务代理框架来构建理论模型,可以发现。地方政府会忽视产出不易测量的文教卫生等社会民生类公共服务的提供。在人口大规模迁移使得教育支出具有显著财政外溢情况下,地方政府将进一步削减教育支出,并向居民转嫁。未来的政策调整方向是,淡化地方政府经济活动激励的同时,加大对社会民生类公共服务的激励强度,并增加对具有财政外溢的教育的专项转移支付,使其经费负担主体逐步上移。     

对我国资本市场体制问题的分析

以国有股和国有法人股为主体的政府垄断型结构,是我国资本市场自开办以来就具有的一个最显著、最基本的特点,它排斥市场机制的作用,并严重扭曲了资本市场的各种功能。我国资本市场能否成为一个真正市场经济意义上的市场,能否真正步入健康、规范的发展之路,将取决于对这一不合理体制结构的彻底改革。     

实施退市风险警示股票交易特性及交易策略——基于2008年11月～2009年11月＊ST股票交易数据分析

退市风险警示是我国证券市场对投资者的一种风险提示,即该类股票的风险很大。但通过对2008年11月-2009年11月的交易数据进行分析发现,整个实施退市风险警示板块的上涨幅度远远大于沪深300指数的上涨幅度。这对于中国证券市场投资者来说非常重要,通过了解该类股票交易特性来改变投资者自己的交易策略,增加获利的机会,但一定要注意可能的风险。     

货币政策有效性研究的最新文献述评

本文从常见研究视角和常用研究方法两个角度,对货币政策有效性研究的最新文献展开综述。通过综述本文发现,参考最优货币政策规则理论的模型设定思路和量化方法,不仅可以避免以多元线性回归模型和S-VAR模型作为重要工具的相关研究中存在的诸如价格之谜和产出之谜等问题,而且其研究结论与政策建议更有利于宏观经济的长期稳定发展。