失地农民就业培训支持系统

以西安城郊失地农民316人为调查样本,对失地农民就业培训现状进行了分析。分析认为,失地农民就业培训状况不容乐观;在此基础上,提出了失地农民就业培训支持系统构建的思路,并从就业培训准备支持、就业培训实施支持、就业培训服务支持3个方面构建了失地农民就业培训支持系统。     

基于支持向量机的中国股指期货回归预测研究

本文针对股指期货预测的特点,选择对股指期货指数有重要影响的相关指标,首次提出用支持向量机(SVM)方法对其进行回归预测,并用遗传算法(GA)和粒子群算法(PSO)分别优化四种不同核函数的支持向量机,构建了八种不同的中国股指期货回归预测方案,用实证研究的方法对这八种方案的准确性和时效性进行了比较。实验结果表明粒子群算法优化的线性核函数支持向量机作为中国股指期货回归预测的模型,具有更好的预测效果。     

五四运动后至建党前马克思主义大众化进程的历史考察

五四运动后至建党前,各地共产主义小组成员加强以马克思主义的学习和研究;以通俗易懂的方式传播马克思主义,大力开展工人工作;积极推进工人阶级对马克思主义的学习和运用。马克思主义大众化结出了丰硕成果,工会组织纷纷成立。考察五四运动后至建党前马克思主义大众化的进程,总结规律性,对推动当代中国马克思主义大众化的工程,具有重要的理论意义和实践意义。      

Rivalry and strategic groups: what makes a company a rival?

Strategic group literature has generated a significant amount of research over recent decades. However, the rivalry implications of strategic group have remained unclear. This paper analyses rivalry and strategic groups in the house building industry in a small town from a cognitive approach. We consider rivalry as a subjective and directional phenomenon. Estimating rivalry as the direct identification of competitors we try to explain whether similarity affects rivalry and what factors make a company a “rival”. Results show that perceived rivalry is strongly related to size, past performance, subjective similarity and strategic group structure.

From social ties to embedded competencies: the case of business groups

Our current views of economic competition are still rooted in the imagery of the isolated firm that transacts with its buyers, suppliers, and competitors via largely anonymous factor and product markets. Yet this view is fundamentally at odds with the growing importance of business groups in the global economy. We thus need a reconceptualized version of our idea of economic competition, which is capable of explaining competitive advantage at the group-versus-group rather than firm-versus-firm level of analysis. In the present paper we build on insights derived from organizational sociology and organizational economics to develop a business group-level theory of competition and competitive advantage based on embedded competencies.

Asymptotic Properties for a Class of Partially Identified Models

We propose inference procedures for partially identified population features for which the population identification region can be written as a transformation of the Aumann expectation of a properly defined set valued random variable (SVRV). An SVRV is a mapping that associates a set (rather than a real number) with each element of the sample space. Examples of population features in this class include interval‐identified scalar parameters, best linear predictors with interval outcome data, and parameters of semiparametric binary models with interval regressor data. We extend the analogy principle to SVRVs and show that the sample analog estimator of the population identification region is given by a transformation of a Minkowski average of SVRVs. Using the results of the mathematics literature on SVRVs, we show that this estimator converges in probability to the population identification region with respect to the Hausdorff distance. We then show that the Hausdorff distance and the directed Hausdorff distance between the population identification region and the estimator, when properly normalized by , converge in distribution to functions of a Gaussian process whose covariance kernel depends on parameters of the population identification region. We provide consistent bootstrap procedures to approximate these limiting distributions. Using similar arguments as those applied for vector valued random variables, we develop a methodology to test assumptions about the true identification region and its subsets. We show that these results can be used to construct a confidence collection and a directed confidence collection. Those are (respectively) collection of sets that, when specified as a null hypothesis for the true value (a subset of values) of the population identification region, cannot be rejected by our tests.     

Decision support system for the batching problems of steelmaking and continuous-casting production

This paper investigates two batching problems for steelmaking and continuous-casting (SCC) production in an integrated iron and steel enterprise. The tasks of the problems are to make the decisions as how to consolidate ordered slabs into charges, and then how to group charges into casts. The effective decisions on these batching problems can help to balance the requirements of materials in downstream production lines, improve the customer satisfaction levels, and reduce production costs (including reduction of open ordered slabs, less slabs quality upgrading, reduction of steel-grade changeovers, and reduction of inefficient utilization of tundishes lives). We first formulate the problems as integer-programming models by consider practical constraints and requirements, and then develop the two heuristic algorithms for the corresponding batching problems. By embedding above models and algorithms, we develop decision support system (DSS) software with interactive planning editor. The DSS has been tested by using practical data set collected from the steelmaking plant in Baosteel which is one of the most advanced iron and steel enterprises in China. Computational experiments demonstrate that the models and algorithms developed can generate the satisfactory solutions when they work together with the planning editor in the DSS.     

Firm-level correlates of emergent green supply chain management practices in the Chinese context

Greening the supply chain is increasingly a concern for many business enterprises and a challenge for logistics management in the 21st century. Of particular concern is how to arouse organizational environmental awareness and put environmental activities into practice in the logistics activities of their supply chains. This paper investigates the correlation of two major factors, organizational learning and management support, with the extent of adoption of green supply chain management (GSCM) practices in Chinese manufacturing firms, where their inbound and outbound logistics activities are potential polluters to the environment. Organizational and operational learning was derived from the firm's experience with programs such as total quality management and environmental management systems. Management support included support for GSCM ideas and practices from top and middle-level management and cooperation across organizational functions. We find significant positive relationships between organizational learning mechanisms, organizational support and the adoption of GSCM practices, after controlling for a number of other influences including regulations, marketing, supplier, cost pressures, industry levels of the relevant practice and organizational size. Implications of our findings on logistics management are discussed.     

Income support for Australian carers since 1983: social justice,social investment and the cloak of gender neutrality

Income support for carers has been available in Australia since the early 1980s. In contrast to most other forms of income support, eligibility for Carer Payment has been progressively expanded in recent years, and increasing numbers of carers are claiming the payment as a result. This article examines the history of income support for carers by reviewing changes in eligibility criteria in the social security legislation and considering how those changes were framed. We argue that reforms to carers' income support have developed within competing frames of social justice and social investment, with an increasing emphasis on a social investment discourse, which prioritises paid work over care. Neither of the dominant frames addresses gender equality, and in practice, income support policy has reinforced familial (women's) responsibility for caring. Given the gendered nature of caring in Australia, gender equality issues must be considered in future policy reforms to ensure that the competing pressures on women to care and to engage in paid work do not lead to greater disadvantage and inequality for women and the people for whom they care.     

布努瑶对喀斯特地区非木材林产品的利用

布努瑶作为典型的山地民族,生息地是典型的喀斯特地区。布努瑶在适应所处生态环境的过程中积累了丰富的地方性生态知识和形成了特殊的技能,对非木材林产品的保护与利用有自己独特的经验。只有发掘和利用布努瑶传统的生态智慧和技能,逐步改变布努瑶的资源利用方式,当地脆弱生态系统才可能支持布努瑶的可持续发展。