Study of haze emission efficiency based on new co-opetition data envelopment analysis

As haze intensifies in China, controlling haze emission has become the country's top priority for environmental protection. Because haze moves across different regions, it is necessary to develop a data envelopment analysis (DEA) model underpinned by both competition and cooperation to evaluate the haze emission efficiency in different provinces. This study innovatively adopts the spatial econometrics to construct the co-opetition matrices of Chinese provinces, then builds the co-opetition DEA model to evaluate the haze emission efficiency of them, and finally uses the haze data of 2015 as an example to assess the applicability of the model. The results of the study include the following: First, compared with the traditional CCR (A. Charnes & W. W. Cooper & E. Rhodes) model, this study constructs the co-opetition DEA cross-efficiency model that integrates haze's feature of cross-border moving; thus, it is more in line with the reality of haze emission and movement. Second, compared with the efficiency value gained from the CCR model, the haze emission efficiency values for Tianjin and Guangdong, two decision-making units, register greater variance when using the DEA model. The reason might lie in that they have a different spatial transportation relationship with their surrounding provinces. Third, the haze emission efficiency of provinces, according to the evaluation based on the co-opetition DEA method, varies greatly: Those with high efficiency are mostly inland provinces with slow economic growth and adverse climatic conditions, whereas many of the provinces with low efficiency are located in the relatively prosperous East China. The specific co-opetition DEA model constructed in this study enriches the research on the DEA model, which can be applied to the emission efficiency evaluation of similar pollutants around the world and can contribute empirical support to the haze reducing efforts of the government with its empirical results.     

高密度城区公共绿地游憩服务能力评价——以成都市中心城区为例

[目的]公共绿地作为公共健康基础设施与提供游憩服务的重要载体,是城市居民身心健康的重要支撑之一。科学评价公共绿地游憩服务能力,尽可能全面把握游憩服务能力情况,可有效服务于高密度城区游憩服务供给的优化。[方法]以成都市中心城区为例,通过梳理游憩需求理论,系统反演游憩服务应供给的功能,制定评价指标体系,分别测度单体公共绿地游憩服务能力、全域公共绿地总体游憩服务能力及公共绿地之间的竞合关系。[结果]研究发现:1)个体公共绿地游憩服务能力呈现“中心低四周高”的特征;2)总体服务能力呈现“中心高四周低”的特征,并显现出“极核-组团-扇形-环带-散点”多模式综合的游憩空间结构;3)公共绿地之间不同的竞合关系形成了差异化的游憩服务供需模式与服务效益。[结论]从衡量标准、评估尺度、认知对象3个方面优化了公共绿地游憩服务能力的评价方法,并根据分析结果提出打造游憩网络体系、全力提升公共绿地的多维可达性、搭建多元游憩服务供给主体的协同供给平台等优化策略。     

产业聚集对企业竞合及绩效的影响研究

以"作为行业的细胞"企业为出发点,探讨产业集聚对集聚后企业间竞合关系和企业绩效的影响.研究结论表明:产业集聚与企业间的良性竞合关系具有正向相关关系,但是产业集聚和企业绩效并没有正相关关系.同时,中心企业与买方的竞合和企业绩效成正相关关系,而企业与其他关联企业的竞合和企业绩效并无显著的正相关关系.     

Organisational resilience and relational dynamics in triadic networks: a multiple case analysis

This study aims to analyse resilience and relational dynamics (competitive, cooperative and co-opetitive) within a triadic buyer–supplier–supplier context. Our central goal is to show how a buyer’s supplier–supplier relational behaviour leads to and shapes resilience of this triad. We utilised a multiple-design case approach and selected eight buyers and their suppliers from the textile industry in Turkey. By analysing a triadic context from another industry, we conducted validation analyses. Our findings showed a pattern of relationship between the resilience and the relational dynamics of a triad. Built on theory and insights from the cases, we proposed three propositions. We argued that when co-opetition prevails in a triadic context of relations, the triad resilience level is highest. In competitive relational settings the triad resilience level is lowest, and when the relational dynamics are cooperative, the triad resilience level is moderate. This study is the first to introduce and discuss organisational resilience at triadic level. Furthermore, to our knowledge, our insights from cases are among the first attempts to link three types of supplier–supplier relational dynamics to triad resilience via the use of a multiple-design case approach. Therefore, our contributions are likely to extend the organisational resilience and buyer–supplier–supplier relations research.     

基于ISM和DEMATEL的石油企业合作竞争战略影响因素分析

合作竞争是我国石油企业持续发展、国际化经营的必由之路,也是获取国外油气资源,缓解目前我国油气资源供需矛盾的有效途径,然而其影响因素是错综复杂的。文章从国际环境、国内环境、企业环境、合作联盟、替代能源等5个方面构建了石油企业合作竞争战略的影响因素集,基于ISM方法,建立了石油企业合作竞争战略影响因素的层次结构;基于DEMATEL方法,分析了因素间的相互作用,并判定出了影响石油企业合作竞争战略的重要因素,为石油企业合作竞争战略的实施提供了决策支持。     

基于进化博弈的企业合作竞争ESS分析

近十年,关于企业的合作竞争问题日益引起广泛的关注。基于博弈参与人有限理性的假设前提,运用进化博弈的基本分析框架,分别构建2×2支付矩阵条件下,两人对称合作博弈与两人非对称合作博弈的模仿者复制动态模型,并分析相应的进化稳定策略。以此描述两企业间合作竞争博弈之长期演化趋势,对企业合作竞争行为提出对策建议。