企业多角化经营战略研究

系统地研究了企业多角化经营战略在世界范围内的发展过程和产生的原因，从多个角度对企业多角化经营战略进行了系统的分类，并深入分析了影响企业选择多角化经营战略的因素     

Power variation control of a wind generator by using feed forward control

The pitch control of wind generators is usually made by a feed back control concept. However, under the conditions where a wind speed changes very frequently due to geographic reasons of the site and the target system has large rotor inertia, the feed back signal which is applied to the control system to compensate disturbance such as wind speed variations is delayed, and consequently the control strategy to keep the generated power at a constant value does not work well. If the wind speed shows too much variation, this will cause a violent variation of power and result in step out operation of the generator from the power system due to magnetic saturation. This paper proposes a control strategy to reduce the power variations by introducing feed forward control combining with the conventional feed back control.     

基于Powermill刀具路径区域控制策略

结合典型案例,阐述了采用Powermill应用残留边界、浅滩边界、曲面边界和无碰撞边界进行数控编程时刀具路径区域控制策略,保证加工质量,提高加工效率.     

A roadmap towards intelligent net zero- and positive-energy buildings

Buildings nowadays are increasingly expected to meet higher and more complex performance requirements: they should be sustainable; use zero-net energy; foster a healthy and comfortable environment for the occupants; be grid-friendly, yet economical to build and maintain. The essential ingredients for the successful development and operation of net zero- and positive-energy buildings (NZEB/PEB) are: thermal simulation models, that are accurate representations of the building and its subsystems; sensors, actuators, and user interfaces to facilitate communication between the physical and simulation layers; and finally, integrated control and optimization tools of sufficient generality that using the sensor inputs and the thermal models can take intelligent decisions, in almost real-time, regarding the operation of the building and its subsystems. To this end the aim of the present paper is to present a review on the technological developments in each of the essential ingredients that may support the future integration of successful NZEB/PEB, i.e. accurate simulation models, sensors and actuators and last but not least the building optimization and control. The integration of the user is an integral part in the dynamic behavior of the system, and this role has to be taken into account. Future prospects and research trends are discussed.     

德国汉堡的创意城市发展策略

从城市规划建设的实践角度入手,论文总结和归纳了创意城市汉堡通过弘扬文化创意产业、打造创意城区、吸引创意人群等途径推进城市发展的具体策略,如港城建设、传统工人街区改造、IBA项目、创意公司等,并综合评述了这些策略的成败得失.     

新型城镇化背景下开发区转型发展的模式与策略探讨* ——基于苏州案例的比较

开发区转型是推进新型城镇化的重要内容之一,如何提高转型发展的质量,需要进一步明确转型的路径、模式及相关策略.本文回溯苏州开发区发展的历程,通过案例比较总结开发区发展的两种模式,提出以建设“综合性城区”为目标,构建产业、人居、生态三相互动的转型发展模式,并提出转型中若干具体的优化策略.     

矿业棕地公园景观建构策略研究

本文在研究现有矿山公园问题的基础上,为使其适应生态化改造,提出了矿业棕地公园的概念,并从景观基础设施、景观生态功能、生态安全格局三方面对其景观建构策略进行了分析,以期为中国大量现存的矿业棕地的修复和矿业城市的生态文明建设提供参考.     

跨国收购理论对于石油资源海外开发的启示

首先从理论上介绍跨国收购的重要意义．然后比较详细地阐述中国石油资源的现状，最后通过对现状的分析，提出石油资源海外开发的战略选择并且从地缘政治经济的角度比较详细地介绍国内三大石油巨头的海外收购行为。     

山西"德元府"品牌下的产品战略--推出"德元府"地特产品品牌战略研究之三

用全新的理念，分析、策划了在山西“德元府”强大品牌下粗杂粮食品、醋业、乳业、豆制品、食用油、干鲜果、调味品、纯净水系列产品族中，从产品开发、生产到价格、包装、服务等方面的产品战略。     

部分国家能源战略及对我国的启示

本文通过对美国、日本、英国、俄罗斯、伊朗、印尼的能源发展对比分析，分别归纳出了发达国家、资源大国、发展中国家在新时期的能源战略特点，并对我国未来一段时间能源战略提出了相关建议。