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101.
CAO Hong-yi 《中国经济评论(英文版)》2007,6(3):34-40,54
The problem of risk-based partner selection of virtual enterprise is investigated. By choosing optimal partner for each project task, the project risk is minimized. The risk parameters are expressed in the form of interval numbers when the precise values are difficult to obtain, and the model is formulated into a 0-1 nonlinear programming with interval coefficients in its objective function. In order to solve the problem, the definition of order relation between interval numbers is given, and the original model is converted into an equivalent crisp bi-objective programming model. Because of the highly constrained nature and multiple objective of the model, a genetic algorithm is proposed to find the set of Pareto or near Pareto optimal solutions. The approach is demonstrated by some numerical examples, and the result shows that the suggested approach has high efficiency and the model has potential to practical applications. 相似文献
102.
中国农产品出口市场结构的实证分析及国际比较 总被引:3,自引:0,他引:3
使用了出口市场集中度指数等分析工具,对我国农产品出口市场结构进行实证分析.结果表明,与世界主要农产品出口国相比,我国农产品的出口市场结构比较集中,在1993~2006年期间经历了先恶化后改善的过程;与肉类产品和水产品相比,我国蔬菜水果产品的出口市场结构相对较为合理. 相似文献
103.
给出了一种采用信干噪比准则的、集成了预多波束天线与LMS自适应天线的软件天线方案,该方案采用开关合并方法,把软件天线输出接到最大输出信噪比的算法输出,实现算法分集.在TD-SCDMA动态模型上对提出的方法进行了仿真,结果表明,采用集成软件天线方案的误码率性能要优于单纯的预多波束天线或LMS自适应智能天线.仿真过程考虑了用户来波方向和用户到基站距离的动态变化,以及功率控制算法和系统同步过程的影响. 相似文献
104.
Douglas G. Pearce 《Annals of Tourism Research》1980,7(1):69-82
Research on tourism and regional development should include a temporal perspective, for studies of contemporary and economic impact are, by themselves, insufficient to explain tourism's contribution to regional development. Such a genetic approach is used to examine the growth and impact of tourism in Queenstown, New Zealand. Events and interrelationships are examined over the last twenty-five years to show the process of growth, changes in the patterns of local and outside involvement and the increasing sophistication of a resort once based largely on scenic factors alone. Certain sectors of the industry have been developed primarily by individuals and companies from the local region, while others have been dominated by outsiders. Although the former contribute the most to regional development through local participation in the development process, external developments have also generated complementary growth. A consideration of events over a certain time span allows these different factors to be placed more clearly in the context of regional development. 相似文献
105.
全球化是一个历史范畴,是世界各国各地区的经济、政治、文化等领域超越国界、扩大联系的历史进程和历史趋势。全球化加速了强势文化的扩张和弱势文化的萎缩,各种文化在融合的过程中趋同,全球化不断吞噬文化多元性。因此从对全球化、文化、文化的多样性及民族文化的概念界定,探析全球化对民族文化的影响及冲击。 相似文献
106.
对多无人机任务分配问题进行了研究,在重量和路径负载均衡的基础上建立了带有攻击顺序的01决策变量的模型,运用分布式的人工免疫算法对该模型进行仿真实验,最终得到每个无人机攻击的目标顺序以及目标函数值,实验证明该方法在得到不劣于遗传算法结果的同时,提高了寻找最优解的收敛速度。 相似文献
107.
Hilla Peretz Ariel Levi Yitzhak Fried 《International Journal of Human Resource Management》2015,26(6):875-903
This study examined data from over 5000 organizations in 22 countries to address three complementary issues: (1) the influence of national culture on the adoption of diversity programs aimed at recruiting, training and promoting individuals from specific target groups; (2) the moderating effect of national cultural practices on the relationship between these diversity programs and the organizational outcomes of absenteeism and turnover; and (3) the mediating effect of absenteeism and turnover on the relationship between diversity programs and organizational performance and innovation. National cultural values and practices were taken from the GLOBE study and assigned respectively to the organizations in our sample. A multilevel path analysis supported the hypothesized effects of national cultural values on organizational diversity programs. Moreover, cultural practices were found to moderate the relationship between diversity programs and absenteeism and turnover. Our hypotheses on the role of absenteeism and turnover as mediators of the relationship between diversity programs and organizational performance and innovation were also supported. Our findings may help guide managers' decisions on the adoption of diversity programs in units operating in different national cultures. We discuss the implications of our findings for scholars and practitioners concerned with diversity management issues in a global context. 相似文献
108.
109.
虚拟企业伙伴选择方法的研究 总被引:2,自引:0,他引:2
选择正确的合作伙伴是虚拟企业组建的关键步骤之一,也是虚拟企业成功运作的首要前提。针对某一具体案例,从目前虚拟企业伙伴选择的几种典型方法入手,运用系统研究方法,对各方法的具体思路作一总结,并提出了各方法的适用范围、优势与弊端,同时,找出了它们之间的差异所在。 相似文献
110.