产业集群可持续成长的战略选择

产业集群作为一种新的竞争单元,其优势越来越被理论界和各级政府部门所认可,成为推动区域经济发展的重要动力。我国产业集群在获得快速发展的同时,表现出技术、功能、结构、环境、机制的成长缺陷。实现产业集群的可持续发展是区域经济发展的重要课题。在分析产业集群成长及其竞争优势的同时,分析了区域产业集群发展的内在缺陷,并着眼于产业集群可持续成长,提出了构建地方产业集群的相关建议。     

Analysis of the response structure to a set of questions with large number of scale points: a new combined metric and categorical approach

In the field of social sciences, certain tasks, such as the identification of typologies and the characterization of groups of individuals according to a set of questions, tend to pose a challenge for researchers. Further complications arise if the chosen rating scale is from 0 to 10, since the responses can be treated either as metric or categorical variables. This paper shows that neither treatment is able on its own to capture all the inherent properties of this type of data, and goes on to propose a bicriteria clustering approach, which captures both perspectives and enables the simultaneous analysis of mixed data using multiple tables.     

From Support to Control: A Configurational Perspective on Conjugal Quality

The topic of conjugal quality provides an empirical illustration of the relevance of the configurational perspective on families. On the basis of a longitudinal sample of 1,534 couples living in Switzerland drawn from the study “Social Stratification, Cohesion and Conflict in Contemporary Families,” we show that various types of interdependencies with relatives and friends promote distinct conflict management strategies for couples as well as unequal levels of conjugal quality. We find that configurations characterized by supportive and noninterfering relationships with relatives and friends for both partners are associated with higher conjugal quality, whereas configurations characterized by interference are associated with lower conjugal quality.     

再论肃慎、挹娄的关系

肃慎和挹娄之间的关系一直是东北民族史中的重要议题。通过对文献的梳理,先秦、秦汉时期有关古肃慎的记载虽多,但实际上中原王朝对其知之甚少,这一时期的文献都未将古肃慎与东北之间建立直接的联系。到了魏晋南北朝时期,随着中原王朝与东北关系的密切,魏晋史家以"楛矢石砮"为依据,断定古肃慎位于东北的北部。而中原王朝更是根据自己的政治需要,将进贡"楛矢石砮"的挹娄认定为肃慎,导致肃慎与挹娄两个族称并存于魏晋南北朝的文献之中。     

我国竞争优势提升策略问题研究——论产业集群在吸引外商直接投资方面的优势

产业集聚发展有利于经济要素的集约和优化配置,企业、行业间的相互协作、融合和提高,有利于资源的共享和循环利用。面对资源紧缺和当今经济危机困境,外商直接投资成为资本跨国界流动的重要方式,并凭借在促进区域经济发展方面的显著优势成为各个国家和地区关注的焦点。外商直接投资的集中化布局趋势进一步彰显了产业集群在吸引外商直接投资方面的优势。因此,为了提升我国竞争优势,我们必须积极培育发展产业集群,借助集群优势进一步提高吸引和利用外商直接投资的效率。     

集群企业外迁及其效应研究

集群中的企业外迁是与企业向某一区域聚集相逆的企业区位选择现象.相对于非集群企业,集群企业可以享受到集群共享性资源提供的非对称竞争优势.但是,企业集群在其自身演化过程中产生的集群网络失灵、聚集不经济,以及集群企业的战略重定位可能导致集群共享性资源相对吸引力下降.而集群企业外迁则正是基于与此环境基础变迁相匹配的企业战略选择.集群企业外迁可能有利于集群网络的成长,也可能导致集群网络的裂断,引发一定的企业集群风险,关键在于集群内部是否形成了梯队式的企业成长机制.     

Generalized estimator for the estimation of rare and clustered population variance in adaptive cluster sampling

Adaptive cluster sampling (ACS) is considered to be the most suitable sampling design for the estimation of rare, hidden, clustered and hard-to-reach population units. The main characteristic of this design is that it may select more meaningful samples and provide more efficient estimates for the field investigator as compare to the other conventional sampling designs. In this paper, we proposed a generalized estimator with a single auxiliary variable for the estimation of rare, hidden and highly clustered population variance under ACS design. The expressions of approximate bias and mean square error are derived and the efficiency comparisons have been made with other existing estimators. A numerical study is carried out on a real population of aquatic birds together with an artificial population generated by Poisson cluster process. Related results of numerical study show that the proposed generalized variance estimator is able to provide considerably better results over the competing estimators.     

武陵山经济协作区的旅游产业协调发展

产业集聚是当今旅游产业发展最主要的特征之一,是提升区域旅游产业竞争力的重要途径,是增强区域经济综合竞争力的主要方式。运用区位商和产业集聚绩效增长指数．分别测定武陵山经济协作区各主体城市的旅游产业集聚程度和增长态势发现,武陵山经济协作区各主体城市的旅游发展极不平衡。需要从旅游产业空间布局、政府合作以及旅游产品多样化等方面进行战略和结构调整,从而提升该地区旅游产业集聚竞争力,带动区域经济的全面综合发展。     

度假酒店产业集群结构与发展模式研究

度假旅游是西方流行近百年的传统旅游方式,最早的度假酒店起源于欧洲.目前,中国的度假酒店发展正处于初级阶段,虽然总体水平不高,但一些沿海城市的度假酒店也显示出良好的发展势头.以产业集群理论为基础,研究了度假酒店产业集群的结构和发展模式.首先从度假酒店的概念分析入手,归纳度假酒店的类型;然后研究酒店业产业集群结构,进而指出度假酒店产业集群的一般性结构.最后,分析了集群效应在度假酒店业中的作用,并归纳国际度假酒店业发展模式,得出度假酒店适于产业集群的结论.     

产业价值链式集群的技术学习研究

产业价值链式集群是针对产业集群联结模式而言的最为常见的一种产业集群,其技术学习的系统性研究对提升产业集群的竞争优势具有重要的理论和现实意义。产业价值链式集群内部的竞争子群、供应商子群、客户子群以及公共机构子群等四个子群是集群内主要的知识来源。从纵向和横向两个维度分析了集群的技术学习过程和潜在的问题,针对各种问题,提出了“构建技术协会网络”和“培育知识密集型服务业”的学习策略,以期提升产业价值链式集群的整体学习绩效。