面向双智城市基础设施建设的标准化设计探讨

随着智慧城市基础设施与智能网联汽车协同发展的加速推进,智慧交通、城市治理、5G通讯、无人驾驶等领域的迅猛发展,使交通路口处出现杆体林立错综复杂、箱体分散杂乱无章的现象。通过创新首个多杆合一、多感合一、多箱合一的“双智标准路口”设计方法,实现智慧城市基础设施和智能网联设备的系统化布局。该设计理念已在北京市高级别无人驾驶示范区落地实施完成,于60 km2内城市道路实现车路云一体化功能覆盖。     

高新区与经开区的趋同趋势及两区合一的管理模式研究

本文从地理位置、发展方向、产业结构、管理模式等4个方面分别论述了经济技术开发区和高新技术产业开发区的趋同趋势,并从它们的历史根源、宏观环境和理论基础3个方面深入地分析了产生这种趋势的原由,以及对地区经济发展的负面影响。最后,在对广州、佛山和济南等国家级开发区管理体制改革经验的基础上提出了“两区合一”的解决方案。     

Complex Network of Aviation E-Services in the Belt and Road Initiative: A Heuristic Study of Small Data based on Block Modeling

ABSTRACT

The aviation e-service system is an important part of support for business communication in regions covered by Belt and Road initiative. In exploring the role of airline companies in this system, we examine the structure of the network, which consists of airlines interconnections based on small data of individual attributes of aviation companies in aviation e-services, and study these interconnections across different groups using block modeling. The heuristic solution of airline companies in development of international communication and cooperation is further discussed. Among our policy implications for global managers, we suggest the enhancement of cross-regional cooperation among airlines.     

Value,rareness, competitive advantage,and performance: a conceptual‐level empirical investigation of the resource‐based view of the firm

The resource‐based view of the firm (RBV) hypothesizes that the exploitation of valuable, rare resources and capabilities contributes to a firm's competitive advantage, which in turn contributes to its performance. Despite this notion, few empirical studies test these hypotheses at the conceptual level. In response to this gap, this study empirically examines the relationships between value, rareness, competitive advantage, and performance. The results suggest that value and rareness are related to competitive advantage, that competitive advantage is related to performance, and that competitive advantage mediates the rareness‐performance relationship. These findings have important academic and practitioner implications which are then discussed. Copyright © 2008 John Wiley & Sons, Ltd.     

大股东地位、产权属性与控制权利益获取——基于大宗股权交易视角的分析

文章利用2006-2010年发生的大宗股权交易事件,对大股东获取控制权利益行为进行分析。研究结论表明,大股东在所有权结构中的控制能力越强,能够获取的控制权利益水平就越高,但是与非控股大股东相比,处于控股地位的大股东更倾向于以私有收益的方式实现控制权利益;与非国有股东相比,国有性质的股东更倾向于以私有收益的方式实现控制权利益;较好的市场环境能够有效抑制获取控制权私利行为,尤其是对控股大股东和国有性质股东获取私利行为的作用程度和效果更明显。     

社会保障基金入市风险分析

社保基金入市后,由于自身特殊性质以及我国股票市场的特殊环境,面临着诸多风险,为了实现社保基金入市后盈利性与安全性的均衡,必须实行有效的风险管理。均值一方差模型、β系数模型、VaR模型和CVaR模型在度量资产的风险中有着广泛的应用。均值一方差和β系数分析均表明,社保基金组合的系统性风险小于整个大盘的风险;各股VaR和CVaR值加权明显大于组合的值,也说明了投资组合可分散风险。     

Causality: a Statistical View

Statistical aspects of causality are reviewed in simple form and the impact of recent work discussed. Three distinct notions of causality are set out and implications for densities and for linear dependencies explained. The importance of appreciating the possibility of effect modifiers is stressed, be they intermediate variables, background variables or unobserved confounders. In many contexts the issue of unobserved confounders is salient. The difficulties of interpretation when there are joint effects are discussed and possible modifications of analysis explained. The dangers of uncritical conditioning and marginalization over intermediate response variables are set out and some of the problems of generalizing conclusions to populations and individuals explained. In general terms the importance of search for possibly causal variables is stressed but the need for caution is emphasized.     

我国内部控制与公司治理机制的有效对接

内部控制的深层次问题在于我国许多企业缺乏完善、健全的公司治理机制以及有效的公司治理机制与内部控制的互动和对接。因此,只有立足于我国的社会基础、制度体系和文化特征,构筑有中国特色的公司治理机制,才能培育出中国的现代企业。     

基于现代服务业发展人才需求的高职院校办学模式探讨

伴随我国经济的快速转型和升级,现代服务业日益受到重视,并得到了迅速发展。大力培养适应现代服务业发展需求的高素质人才,是高职教育目前面临的重要课题。由于高职教育起步较晚、重视程度不高,高职教育还没有形成稳定而有效的办学模式,尤其是对于高职院校个体而言,积极探索适应当前现代服务业发展的办学模式具有重要意义。因此,从现代服务业内涵和人才需求特点分析出发,提出了校企紧密结合型高职院校办学模式,期望为当前高职院校办学模式探索提供有益的借鉴和思考。     

浅析高等职业教育改革中的“工学结合”

作为我国高等职业教育改革的重要切入点,“工学结合”人才培养模式为学生提供了一条接受职业技能教育的新途径。它不但有利于提高学生的职业能力,还可以使学生获得必要的社会经验,是一种实用性和针对性很强的人才培养模式。但由于“工学结合”人才培养模式在我国起步较晚,目前在实施过程中面临许多问题。因此,探索有效的实施对策是非常必要的。