The three aspects of construction, investment and operation belong to systematic projects of smart cities. Smart cities could not be fully accomplished merely with any single aspect being well done. Feasible and effic...The three aspects of construction, investment and operation belong to systematic projects of smart cities. Smart cities could not be fully accomplished merely with any single aspect being well done. Feasible and efficient models lay the foundation to set up modern smart cities. Standardized models arouse various intellectualized conceptions, and fulfill concrete practices. Reasonable operation modes make smart city system to be organic and dynamic, so that various intelligent attributes of smart cities would be fully exerted. The operation process promotes sustainable development of smart cities, on the condition of which intelligentized services be provided to urban residents. This aspect accounts for different results of different cases at home and abroad. By comparing different operation modes of smart city construction at home and abroad, this thesis focuses on backgrounds, contents and successful operations of typical urban constructions. Several chief operation modes of foreign smart city constructions are researched, thus provids references for the construction of smart cities in China, so that innovations of operation and management modes of smart cities in China are expected to occur, and hence push forward construction and development of smart cities in China.展开更多
Epi-up and epi-down bonding of high power 980nm lasers have been studied in terms of bonding process, thermal behavior, optical performances, thermal stress effects and long-term laser reliability. We demonstrated tha...Epi-up and epi-down bonding of high power 980nm lasers have been studied in terms of bonding process, thermal behavior, optical performances, thermal stress effects and long-term laser reliability. We demonstrated that epi-down bonding can offer lower thermal resistance and improved optical performances without significantly degrading the long-term laser reliability.展开更多
基金supported by the Graduate Research Projects of Guizhou University of Finance and Economics titled with "Study on the PPP mode of Characteristic Towns Construction"
文摘The three aspects of construction, investment and operation belong to systematic projects of smart cities. Smart cities could not be fully accomplished merely with any single aspect being well done. Feasible and efficient models lay the foundation to set up modern smart cities. Standardized models arouse various intellectualized conceptions, and fulfill concrete practices. Reasonable operation modes make smart city system to be organic and dynamic, so that various intelligent attributes of smart cities would be fully exerted. The operation process promotes sustainable development of smart cities, on the condition of which intelligentized services be provided to urban residents. This aspect accounts for different results of different cases at home and abroad. By comparing different operation modes of smart city construction at home and abroad, this thesis focuses on backgrounds, contents and successful operations of typical urban constructions. Several chief operation modes of foreign smart city constructions are researched, thus provids references for the construction of smart cities in China, so that innovations of operation and management modes of smart cities in China are expected to occur, and hence push forward construction and development of smart cities in China.
文摘Epi-up and epi-down bonding of high power 980nm lasers have been studied in terms of bonding process, thermal behavior, optical performances, thermal stress effects and long-term laser reliability. We demonstrated that epi-down bonding can offer lower thermal resistance and improved optical performances without significantly degrading the long-term laser reliability.
