The IGU-2006 Brisbane Conference was convened on 3-7 July 2006 in Queenland University of Technology, Brisbane, Australia. Approximately 1000 geographers from nearly 50 countries and regions participated in the IGU-20...The IGU-2006 Brisbane Conference was convened on 3-7 July 2006 in Queenland University of Technology, Brisbane, Australia. Approximately 1000 geographers from nearly 50 countries and regions participated in the IGU-2006 Brisbane Conference, which was sponsored by International Geographical Union （IGU）, and organized by the Institute of Australian Geographers （IAG） and the New Zealand Geographical Society （NZGS）.展开更多
Despite of the fact that knowledge sharing has become the focus of current literature and management practice, the core process of knowledge sharing has not been identified. What are the main barriers and incentives f...Despite of the fact that knowledge sharing has become the focus of current literature and management practice, the core process of knowledge sharing has not been identified. What are the main barriers and incentives for people to share their knowledge, what is the internal mechanism of knowledge sharing, and how people evaluate the benefit coming from knowledge sharing are the core areas in knowledge management. In this paper, we reexamine the knowledge sharing based on knowledge convening and fermenting model. After comparing the process of knowledge movement with that of biotic fermenting, several important attributes that knowledge owns are discovered, they are existence of origination, inheritance and variation, the need of assembly for knowledge evolution and medium for knowledge assemblage. Furthermore, the authors put forward a new model--knowledge convening and fermenting model and in this way consider knowledge sharing as a process of knowledge fermenting. The authors thoroughly analyze the biotic attributes of knowledge, the elements of knowledge share fermenting model, and typical knowledge share fermenting.展开更多
正The 3rd Plenary Session of the 10th Executive Council of CAFIU was convened in the morning of May 11th in Beijing. Nearly a hundred participants were present at the Session, including Vice-Chairman of the NPC Standing
研究的DC/DC变换器技术已用于国际空间站上的一个大型科学实验,即阿尔法磁谱仪。由于太空装置受太阳光的辐射,位置变化时温度变化也非常大,而太空装置内仪器传感系统的温度必须保持在10℃～20℃内,因而必须研制一种热控制系统(Thermal C...研究的DC/DC变换器技术已用于国际空间站上的一个大型科学实验,即阿尔法磁谱仪。由于太空装置受太阳光的辐射,位置变化时温度变化也非常大,而太空装置内仪器传感系统的温度必须保持在10℃～20℃内,因而必须研制一种热控制系统(Thermal Control System,简称TCS)。这里介绍的TCS DC/DC变换器,就是针对TCS的需求,使DC/DC变换器输出可变的直流电压,以此控制TCS的制冷和加热装置,使装置内的温度达到预期要求。基于实验和理论分析结果,分析了Buck变换器作为一类典型的电力电子电路所具有的固有非线性和不确定性现象,揭示了电路和器件的寄生参数是引起Buck变换器非线性的主要原因。展开更多
文摘The IGU-2006 Brisbane Conference was convened on 3-7 July 2006 in Queenland University of Technology, Brisbane, Australia. Approximately 1000 geographers from nearly 50 countries and regions participated in the IGU-2006 Brisbane Conference, which was sponsored by International Geographical Union （IGU）, and organized by the Institute of Australian Geographers （IAG） and the New Zealand Geographical Society （NZGS）.
基金This research has been sponsored by National Natural Science Foundation of China （NSFC） （No.70272044） and Ph. D Research Fund （No, 20030056014）.
文摘Despite of the fact that knowledge sharing has become the focus of current literature and management practice, the core process of knowledge sharing has not been identified. What are the main barriers and incentives for people to share their knowledge, what is the internal mechanism of knowledge sharing, and how people evaluate the benefit coming from knowledge sharing are the core areas in knowledge management. In this paper, we reexamine the knowledge sharing based on knowledge convening and fermenting model. After comparing the process of knowledge movement with that of biotic fermenting, several important attributes that knowledge owns are discovered, they are existence of origination, inheritance and variation, the need of assembly for knowledge evolution and medium for knowledge assemblage. Furthermore, the authors put forward a new model--knowledge convening and fermenting model and in this way consider knowledge sharing as a process of knowledge fermenting. The authors thoroughly analyze the biotic attributes of knowledge, the elements of knowledge share fermenting model, and typical knowledge share fermenting.
文摘正The 3rd Plenary Session of the 10th Executive Council of CAFIU was convened in the morning of May 11th in Beijing. Nearly a hundred participants were present at the Session, including Vice-Chairman of the NPC Standing
文摘The 27th Meeting of the Sino-U.S. Joint Committee on High Energy Physics took place on 17 and 18 November at the CAS Institute of High Energy Physics
文摘研究的DC/DC变换器技术已用于国际空间站上的一个大型科学实验,即阿尔法磁谱仪。由于太空装置受太阳光的辐射,位置变化时温度变化也非常大,而太空装置内仪器传感系统的温度必须保持在10℃～20℃内,因而必须研制一种热控制系统(Thermal Control System,简称TCS)。这里介绍的TCS DC/DC变换器,就是针对TCS的需求,使DC/DC变换器输出可变的直流电压,以此控制TCS的制冷和加热装置,使装置内的温度达到预期要求。基于实验和理论分析结果,分析了Buck变换器作为一类典型的电力电子电路所具有的固有非线性和不确定性现象,揭示了电路和器件的寄生参数是引起Buck变换器非线性的主要原因。
