装备工业的快速发展与产业结构的优化升级

落后的技术装备水平是导致我国工业粗放型增长并进而导致结构性矛盾的重要原因。在新的发展阶段 ,优化产业结构 ,淘汰落后技术 ,全面更新技术手段和生产设备 ,加快装备工业发展 ,推进关键设备国产化 ,成为提高国民经济运行质量和效益的战略性环节     

战略联盟--企业竞争新模式

战略联盟是企业之间为了一定目的 ,通过一定方式组成的网络式联合体。面对日趋激烈的市场竞争和外部环境的变化 ,企业之间既竞争又合作 ,战略联盟是一种全新的企业竞争模式     

浅析建筑市场监理运行现状与对策

文章透析了监理单位的外部管理现状 ,内部运行机制及监理业务的竞争环境 ,并提出了相应的对策与建议     

公司竞争情报系统观念群体论

21世纪的情报观 ,是一个需要不断完善的观念体系 ,面对严峻的市场竞争 ,必须建立一个能对企业实施有效控制的、能充分蕴含情报价值的系统。     

市场竞争条件下成人高等教育发展的困境与突破

改革开放以来，我国经济体制从计划走向市场，并逐步趋于完善。经济体制的转变带来了成人高等教育活动的变革。市场竞争条件下成人高等教育发展呈现出竞争性、合作性、品牌化、多样性和适应性等特征。然而，我国成人高等教育却存在着地位不明、竞争力弱、质量偏低、单一化、趋同化等问题。我们只有对成人高等教育进行系统改革，才能建立与现代市场经济体系相适应的成人高等教育体系。     

基于RSA的电子商务信息加密技术研究

21世纪是网络信息时代,电子商务的迅猛发展和普及打破了人们传统的经营和消费理念,网上消费已成为一种新的消费形式,但随之而来的便是电子商务赖以生存和发展的安全问题。文章主要通过对电子商务安全隐患的分析,论证了数据加密技术在电子商务安全中的作用,重点探讨了RSA公钥加密算法,并通过实例对其加密原理、计算复杂性等安全性问题作了详尽的分析和阐述。     

先进制造业基本特征刍议

本文结合当今先进制造业已具备的几个基本特征分析了我国制造业发展中存在的一些问题 ,并对如何解决这些问题提出了自己的观点与见解     

奇正相生 意趣盎然——当代西方建筑赏析

当代西方一些著名的建筑大师时常在自己的作品中运用斜向构图要素插入到方正的网络之中,并借正和斜的强烈对比而取得意想不到的效果。这种手法不仅有悖于我国传统的审美观念,而且就是在西方传统的建筑构图法则中也不多见。本文就具有代表性的作品作深入细致的分析,以期阐明这种方法的运用是如何赋予作品以生机和活力的。应放手吸取西方当代建筑师行之有效的观念与方法,以使建筑创作更富有时代性。     

Effects of gall volume on survival and fecundity of gall-making aphidsAdelges japonicus (Homoptera: Adelgidae)

Summary The number of larvae reaching maturity within the gall ofAdelges japonicus was positively related to gall volume, and the relationship between the number of mature larvae and gall volume did not change with different densities of colonized larvae. The population changes in the bud galls ofA. japonicus were surveyed by collecting the galls, which did not suffer predation or parasitism within the galls, from young artificial plantations ofPicea jezoensis over two years. In the year when the density of colonized larvae was high, they suffered a 42% mortality within the galls, whereas mortality was nearly zero in the low density year. The numbers of larvae per gall were positively correlated with gall volume. The regression lines of the number of colonized larvae on gall volume did not differ significantly in the regression coefficients between the two years, whereas the intercept was significantly higher in the year when the density of colonized larvae was higher. However, different within-gall mortality nullified this difference, and the regression lines of the number of mature larvae on gall volume had no significant difference both in the regression coefficients and the intercepts. This suggests that the number of mature larvae per gall was limited by available resources within the gall which were positively related to gall volume. In 25% of the galls in which mature larvae inhabited, the space within the galls were completely filled by the larvae, indicating that space was one of the limiting resources. Gall volume also affected the number of adults that emerged from the gall and the potential number of their progeny.     

资本结构研究的新发展:基于战略视角

从战略的角度看,企业的资本结构决策是基于公司战略、竞争战略以及企业所面临的竞争环境所作出的理性选择。把战略与资本结构连接,开辟了资本结构研究的新领域。企业的战略类型、企业管理者对风险的态度、企业所面临的竞争环境等战略因素对资本结构有着重要影响。