空间视角下R&D投入对区域创新能力的影响研究——基于科技政策组合的调节作用

基于知识生产函数模型和创新地理学理论,本文利用我国30个省(区、市)2008~2020年的面板数据,通过空间计量模型实证分析R&D投入对区域创新能力的影响及空间溢出效应,并从政策目标与政策工具的耦合协调性视角理解科技政策组合,分析科技政策组合的调节效应。研究发现,我国省域创新能力呈现由东向西逐渐减弱的“梯形”分布特征;R&D资金和R&D人员对于本地区域创新能力提升具有显著的正向影响,但空间溢出效应均不显著;科技政策组合正向调节R&D投入对区域创新能力的促进作用。对此,国家应制定适宜的区域创新战略,地方政府应探索差异化创新驱动发展路径并提升科技政策组合的耦合协调性。     

资本监管对我国银行业市场竞争度的影响研究

2004年《商业银行资本充足率管理办法》颁布后,我国开始真正意义上的资本监管。统一的资本监管标准．有利于银行业市场竞争的公平性。本文通过对资本监管与银行业市场竞争度的相关性分析和Granger因果检验,探讨了资本监管对我国银行业市场竞争度的影响。结果发现,资本监管与银行业市场竞争度存在相关性,但相关系数较低,且他们之间没有明显的因果关系,我国商业银行资本监管还有待进一步的改进和完善。     

Reconsidering the Relationship between Inflation and Relative Price Variability

It has long been popularly believed that the relationship between inflation and relative price variability (RPV) is positive and stable. Using disaggregated CPI data for the United States and Japan, however, this study finds that the relationship is neither linear nor stable over time. The overall relationship is approximately U‐shaped around a nonzero threshold inflation rate. RPV therefore changes not with the inflation rate per se, but with the deviation of inflation from the threshold inflation rate. More importantly, the relationship is by no means stable over time but instead varies significantly in a way that coincides with regime changes of inflation or monetary policy. The relationship was positive during the period of high inflation of the 1970s and the early 1980s, as has been documented by a number of previous studies, whereas it takes a U‐shape profile during the Great Moderation. The results are robust to the use of core inflation, which excludes the traditionally volatile prices of food and energy. This paper then presents a modified version of the Calvo‐type sticky price model to describe the observed empirical regularities. Simulation experiments show that the modified Calvo model fits the data well, and that the underlying relationship hinges upon the degree of price rigidity, which is systematically related to inflation regime. For countries and periods with low inflation rates, the relationship takes a U‐shape as price adjustment is more sticky. In a high‐inflation environment, when price setting becomes more flexible, the U‐shaped profile vanishes.     

Innovation and the circular economy: A systematic literature review

The circular economy emerged as an alternative model to the linear system, which now appears to be reaching its physical limitations. To transition to a circular economy, companies must not only be aware of but also engage in more sustainable practices. For such a transition, companies must rethink and innovate their business models and the ways they propose value to their clients while simultaneously considering environmental and social facets. This systematic literature review sought to map out from the company perspective the key topics interrelated with innovation and the circular economy, describing the internal and external factors to consider in such transition processes. Key lines of research were identified, and suggestions for future research and for facilitating movement toward a circular economy are provided. This work contributes to deepening the literature by identifying the priority areas concerning the circular economy and encouraging future research that meets international standards of excellence.     

研究生就业观的调查与思考——以西安电子科技大学为例

研究生就业竞争日趋激烈,就业工作面临严峻挑战。就业观是研究生就业的基本导向。调研发现研究生在择业过程中心态积极、地域选择理性、单位选择多元、薪资期望偏高、个人主义倾向严重,同时创业意识淡薄,期望深入有效的就业指导。因此,就业工作中应进一步通过思想政治教育、精细化的就业指导服务、开设创新创业教育和做好信息服务体系建设,帮助研究生树立高远的职业理想、建立合理的就业期望、搭建良好的就业平台,提升研究生就业满意度。     

博乐市土地集约程度综合评价方法

简述了博乐市城镇土地集约利用评价指标体系遵循的原则,并分析如何做好土地集约程度评价工作。     

Changes in risk and strategic interaction

In this paper we study the comparative statics of Nth degree stochastic dominance shifts in a large class of non-cooperative games. We consider symmetric equilibria as well as asymmetric equilibria in which the risk changes are idiosyncratic and not necessarily of the same stochastic order. Furthermore, we establish conditions for risk changes to produce multiplier effects on equilibrium strategies. Finally, we evaluate the comparative statics of stochastic dominance shifts in supermodular games, which may feature multiple equilibria and non-convex strategy sets.     

城市区域交通状态判别方法研究

随着新一代智能化交通控制系统的出现,城市区域交通状态判别方法的研究显得尤为重要。本文在已知各个子区交通状态的基础上,用层次分析法确定出各个子区在区域中所占的权重,然后用加权平均法得出区域的交通状态。最后利用VISSIM软件模拟验证了本文算法的合理性。     

区域经济增长与建筑业技术效率耦合的空间差异

首先计算各地区的经济综合发展水平,然后基于随机前沿生产函数模型,计算1997—2007年不同地区的建筑业技术效率,最后借鉴物理学中的耦合度函数,测度出不同地区经济增长与建筑业技术效率的耦合协调程度,结果显示:我国各省区经济增长与建筑业技术效率耦合协调程度存在明显的空间差异,可分为优质协调、良好协调、中级协调、初级协调和勉强协调五种类型,且大部分省区处于初级协调阶段。     

对抗震验算公式γ_0s≤R的探讨

文章通过对截面抗震验算公式和非抗震承载力设计的一般公式中系数的不同的比较,对构件承载力抗震调整系数作出解释,并说明结构构件重要性系数不出现在结构构件的截面抗震验算公式中的原因。