论企业战略联盟

作为现代企业组织制度最重要的创新形式——企业战略联盟，已成为现代企业提升国际竞争力，参入全球竞争的重要方式之一。本主要论述了什么是企业战略联盟、企业为什么要建立战略联盟及企业怎样建立有效的战略联盟。     

基于微分竞争学习的参数估计器

推导了基于微分竞争学习的参数估计器（ＤＣＬＰＥ），为解决没有统计先验信息、线性或非线性观测过程以及待估参数属于多类统计模式的参数估计问题提供了一种有效方法．应用实例仿真验证了ＤＣＬＰＥ的全局搜索寻优与自适应参数估计能力     

Enhanced flocculation of colloidal dispersions by polymer mixtures

Bridging flocculation and electrolyte coagulation of negatively charged colloidal dispersions in the presence and absence, respectively, of uncharged polymers and polymer mixtures were studied. The relative coagulation and flocculation rates of particles in the presence of electrolyte and small polymer amounts were measured and the stability ratios have been calculated at various ionic strengths. Also, the structure of polymer layers formed in individual adsorption of polymers and in simultaneous competitive adsorption from binary polymer mixtures at particle/solution interfaces was investigated. The electrophoretic mobility and the diffusion coefficient of particles with and without adsorbed polymer were measured by laser Doppler-electrophoresis and photon correlation spectroscopy, respectively, and the electrophoretic and the hydrodynamic thickness of adsorbed polymer layers have been calculated. It was found that the adsorbed polymers may enhance or diminish the rate of successsful encounters between particles, even at low surface coverages, depending on the magnitude of the interparticle electrostatic repulsion. In addition, competitive adsorption of chemically different polymers for particle surfaces may result in considerable alteration in the conformation of macromolecules in the mixed adsorption layer. Close correlation was found between the effectiveness of polymers as flocculants and the thickness of adsorbed polymer layers formed at optimum polymer dosages on the particle surfaces. Binary mixtures of suitable polymers proved to be very efficient flocculants for the dispersions. The enhanced flocculating effect of some mixtures can be ascribed to extended polymer layers formed in competitive adsorption of chemically different macromolecules at particle/solution interfaces. These findings have relevance in many environmental technologies and offer a way of improving the effectiveness of solid–liquid separation processes.     

全业务环境下移动运营商的竞争策略

面对全业务竞争,移动运营商必须把握市场发展的趋势,针对不同的客户群采用不同的竞争策略。对传统的个人移动市场,在客户发展几近饱和的情况下,可以考虑提高网络与服务质量,采用优惠价格政策稳定客户群;对家庭和政企客户,在发展客户的同时,应以开发具备吸引力的业务为主,同时改变营销模式,通过积极的行商方式推动两大客户群的发展。此外,移动运营商可以充分借助自身在移动通信技术上的优势,大力推广移动互联网业务的发展。     

省级电力市场竞标及结算模式研究

电力市场的竞标及结算模式是建立一套完整的市场机制的核心部分.作者针对电网发展的现状和特点,以促进竞争、降低电价、体现公平为目的,以鼓励竞争、平稳过渡为原则,建立了一套适合省级电网在市场化改革初期的市场交易模式.该模式提出了限量竞标、分类结算的方法,对电力市场的构成模式、市场成员、竞标方式以及结算方式等方面进行了详细的论述.针对目前省级电网中普遍存在的系统调频容量不足、无功电能难以结算等问题,综合机组的运行特性,制定了一套辅助服务的结算模式;通过公平合理的结算方式,鼓励发电机组参与调频调压.文章的算例选取了广东电网典型参数进行竞标模拟,结果表明,所提出的交易模式切实可行,具有良好的推广前景.