高铁开通、要素禀赋与区域经济增长——以贵州省为例

基于2008-2018年贵州省9个地级市和自治州的面板数据,实证检验高铁开通对区域要素禀赋与经济增长的影响。结果表明:高铁开通在总体上促进了贵州省区域经济增长,提高了劳动力要素的相对丰裕程度。然而,高铁开通并未表现出技术溢出作用,反而降低了劳动力和资本要素的边际生产率,对要素禀赋结构优化和区域经济长期发展产生不利影响。基于此提出,应因地制宜科学规划高铁建设,推进科学技术创新,加强高素质人才培养与引进,优化营商环境,提升社会保障水平,以发挥高铁的扩散效应,降低聚集效应,进而改善要素禀赋结构,促进区域经济协调发展。     

Selection of influential variables in ordinal data with preponderance of zeros

Presence of excess zero in ordinal data is pervasive in areas like medical and social sciences. Unfortunately, analysis of such kind of data has so far hardly been looked into, perhaps for the reason that the underlying model that fits such data, is not a generalized linear model. Obviously some methodological developments and intensive computations are required. The current investigation is concerned with the selection of variables in such models. In many occasions where the number of predictors is quite large and some of them are not useful, the maximum likelihood approach is not the automatic choice. As, apart from the messy calculations involved, this approach fails to provide efficient estimates of the underlying parameters. The proposed penalized approach includes ?₁ penalty (LASSO) and the mixture of ?₁ and ?₂ penalties (elastic net). We propose a coordinate descent algorithm to fit a wide class of ordinal regression models and select useful variables appearing in both the ordinal regression and the logistic regression based mixing component. A rigorous discussion on the selection of predictors has been made through a simulation study. The proposed method is illustrated by analyzing the severity of driver injury from Michigan upper peninsula road accidents.     

越南昆江2水电站埋藏式压力钢管设计

越南昆江2水电站二级电站为典型的高水头水电站,其埋藏式压力钢管段是该电站设计施工重点部位.文章就管径管材选用、高压管道钢衬起点位置、抗内外压力稳定以及灌浆排水等方面进行了计算分析。     

后疫情时代我国数字经济高质量发展战略对策

数字经济是有效统筹疫情防控和经济社会发展的重要路径.目前,我国数字经济总体规模不断扩大,产业数字化成为我国数字经济的主引擎,我国数字经济有望呈现快速且高质量发展态势.我国数字经济之所以取得巨大成就,主要归因于国家高度重视与审慎包容支持、数字经济综合市场优势显著以及拥有一批能力较强的数字企业等.但我国数字经济领域仍存在产...     

城乡要素自由流动促进新发展格局形成的路径研究

城乡要素自由流动是畅通国民经济循环、构建“双循环”新发展格局的内在要求。从需求端看,城乡要素自由流动既有利于劳动力等要素流向城市、推进新型城镇化;也有利于高端要素回流乡村,激发乡村蛰伏的发展潜能、促进乡村振兴,从而为构建“双循环”新发展格局拓展新的内需空间。从供给端看,城乡要素自由流动有利于畅通生产、分配、流通和消费各环节,平衡城乡要素结构,提升要素配置效率,为构建“双循环”新发展格局培植新动能。因此,要发挥“有效市场”在要素配置中的决定性作用,深化城乡要素市场化配置改革,消除阻碍城乡要素自由流动和高效配置的各种体制障碍,打通“双循环”新发展格局中城乡要素流动的关键堵点。要发挥“有为政府”在乡村基础设施和政策体系制度供给中的作用,深化户籍、土地等制度改革,使城乡人口流动摆脱户籍制约,构建城乡统一的建设用地出让机制。要加大对要素返乡的支持力度,全面推进城乡新型基础设施建设,为形成“双循环”新发展格局提供有力的要素支撑。     

副省级城市创新型城市建设比较研究——兼论大连市创新能力的成长与提升

以在我国城市体系和国家创新体系中占有重要地位的15个副省级城市为研究对象,通过构建科学、规范的评价指标体系,采用主客观相结合的评价方法,对样本城市的创新要素和能力进行了比较分析,揭示这些城市创新状况的共性与差异;并通过对大连的重点剖析,分析其创新型城市建设的优势与不足,针对其创新能力成长与提升的关键,提出了针对性的对策建议。     

国际资金循环测度的统计方法及应用

研究目标：本文研究如何测量国际资金循环（Global Flow of Funds,GFF）,试图整合国际金融相关数据源,创建GFF统计矩阵。研究方法：讨论了GFF的基本概念,确定了国际资金循环的统计范围。按照2008SNA所提倡的From Whom to Whom 的统计基准,建立了GFF的统计框架,据此框架整合了国际金融组织之间的数据系统关系和现有的国际金融统计数据源。研究发现：利用相关统计创建了GFF矩阵模型表,试编了一个包含中国在内的由11个国家所构成的“国家×国家”的GFF统计矩阵表。研究创新：创建了GFF矩阵表,展开了以中国为主要观测对象的国际跨境资本比较分析。研究价值：建立了观测GFF统计,开辟了新的分析视野,客观揭示了中国在GFF中的状况及现存的主要问题。     

High‐Performance Work Systems in Professional Service Firms: Examining the Practices‐Resources‐Uses‐Performance Linkage

Professional service firms (PSFs) play an important role in the knowledge‐based economy. Their success is highly dependent on their people, the knowledge resources they possess, and how they use these resources. However, how to systematically manage human resources to attain high performance is not fully understood. This study addresses this issue by investigating the linkage mechanisms through which high‐performance work systems (HPWS) influence the performance of PSFs. We integrate resource‐based and dynamic capability theories in order to identify and investigate two intervening mechanisms that link HR practices to firm performance. The first mechanism is the intellectual capital resources comprising the human, social, and organizational capital that HPWS create. The second mechanism is the uses to which both HPWS and resources can be applied, operationalized as organizational ambidexterity, the simultaneous exploitation of existing knowledge and exploration of new knowledge. These mechanisms are hypothesized to link HPWS to firm performance in the form of a practices‐resources‐uses‐performance linkage model. Results from a longitudinal study of 93 accounting firms support this linkage model. © 2015 Wiley Periodicals, Inc.     

Career Management in High‐Performing Organizations: A Set‐Theoretic Approach

The aim of this study is to investigate the elements of organizational career management (OCM) that can lead to strong organizational performance. The growing unpredictability of careers requires a different organizational approach of careers. Yet, new career models all focus on the individual as the central actor, leaving the role of the organization rather underdeveloped. Based on a combined perspective integrating insights from the literature on careers, high performance work systems, and idiosyncratic deals (I‐deals), we address four dimensions of OCM: supportive and developmental practices, development I‐deals, individual responsibility, and consensus. We study their relationships with company performance, thereby including the firm's human capital composition. Surveys were administered to the HR directors of 293 organizations. We apply a relatively new method, fsQCA (fuzzy‐set qualitative comparative analysis), and complement this with more conventional structural equation modeling (SEM). The SEM analyses suggest that only supportive and developmental practices are positively associated with high performance. However, based on the fsQCA, three configurations are identified in which OCM is associated with high performance. The most prevalent configuration combined supportive and developmental practices with I‐deals and individual responsibility for career management. We conclude with a discussion of the implications of our findings, and address the utility of adopting a configurational approach in career research. © 2016 Wiley Periodicals, Inc.     

The High‐Rise Home: Verticality as Practice in London

This article investigates the relationship between verticality and home. It develops the idea of ‘verticality as practice'. This appreciates verticality not as something that takes place in three‐dimensional landscapes, but as the outcome of everyday practical activity. Examining a modernist high‐rise estate, the Aylesbury Estate in London, the article identifies and examines a range of vertical practices, illustrating how they are intertwined with home. Vertical practices, such as those associated with the view, help to make a unique and special home, becoming intensely meaningful to residents. However, they also unmake dimensions of home when they interact with the estate's marginality.