THE reforms in the Decision on Major Issues Concerning Comprehensively Deepening Reforms - as well as the actions on the part of the CPC and its Central Commission for Discipline Inspection （CCDI） since the election...THE reforms in the Decision on Major Issues Concerning Comprehensively Deepening Reforms - as well as the actions on the part of the CPC and its Central Commission for Discipline Inspection （CCDI） since the election of the new leadership in 2012 - clearly demonstrate a strong emphasis by the CPC on addressing corruption, building a clean government, and intensifying anti-corruption efforts by going after both ＂tigers＂ and ＂flies＂ - high- and low-ranking corrupt officials. The Decision highlights the determination of the Party to institutionalize anti-corruption efforts.展开更多
The Anhui Flying Tiger(Feihu)Automobile Group Corporation is composedof 81 enterprises and institutions forproduction and coordination.The AnhuiHuaihai Machinery Factory—the coreenterprise—is the key national automo...The Anhui Flying Tiger(Feihu)Automobile Group Corporation is composedof 81 enterprises and institutions forproduction and coordination.The AnhuiHuaihai Machinery Factory—the coreenterprise—is the key national automobilemanufacturer.The factory has total assets ofRMB480 million,staff of 3,400,including500 medium-to-senior technical people,annual production capacity of 50,000 forautomobiles,with their quality proven to beClass A for seven years running.Since1992,the factory has been aiming at theinternational market,exporting more展开更多
Volume instability of expansive soils due to moisture fluctuations is often disastrous,causing severe damages and distortions in the supported structures.It is,therefore,necessary to adequately improve the performance...Volume instability of expansive soils due to moisture fluctuations is often disastrous,causing severe damages and distortions in the supported structures.It is,therefore,necessary to adequately improve the performance of such soils that they can favorably fulfil the post-construction stability requirements.This can be achieved through chemical stabilization using additives such as lime,cement and fly ash.In this paper,suitability of such additives under various conditions and their mechanisms are reviewed in detail.It is observed that the stabilization process primarily involves hydration,cation exchange,flocculation and pozzolanic reactions.The degree of stabilization is controlled by several factors such as additive type,additive content,soil type,soil mineralogy,curing period,curing temperature,delay in compaction,pH of soil matrix,and molding water content,including presence of nano-silica,organic matter and sulfate compounds.Provision of nano-silica not only improves soil packing but also accelerates the pozzolanic reaction.However,presence of deleterious compounds such as sulfate or organic matter can turn the treated soils unfavorable at times even worser than the unstabilized ones.展开更多
The previous studies of time delay compensation in flight control systems are all based on the conventional aerodynamic derivative model and conducted in longitudinal motions at low angles of attack.In this investigat...The previous studies of time delay compensation in flight control systems are all based on the conventional aerodynamic derivative model and conducted in longitudinal motions at low angles of attack.In this investigation,the effects of time delay on the lateral-directional stability augmentation system in high-a regime are discussed based on theβmodel,which is proposed in our previous work and proved as a more accurate aerodynamic model to reveal the lateraldirectional unsteady aerodynamic characteristics at high angles of attack.Both theβmodel and the quasi-steady model are used for simulating the effects of time delay on the flying qualities in high-a maneuvers.The comparison between the simulation results shows that the flying qualities are much more sensitive to the mismatch of feedback gains than the state errors caused by time delay.Then a typical adaptive controller based on the conventional dynamic derivative model and a gain-prediction compensator based onβmodel are designed to address the time delay in different maneuvers.The simulation results show that the gain-prediction compensator is much simpler and more efficient at high angles of attack.Finally,the gain-prediction compensator is combined with a linearizedβmodel reference adaptive controller to compensate the adverse effects of very large time delay,which exhibits excellent performance when addressing the extreme conditions at high angles of attack.展开更多
On March 28,Chinese Vice Premier Liu Yandong attended the opening of the Flying Tiger Guilin Heritage Park in Guilin,southwest China’s Guangxi Zhuang Autonomous Region whose construction started in July 2011.Located ...On March 28,Chinese Vice Premier Liu Yandong attended the opening of the Flying Tiger Guilin Heritage Park in Guilin,southwest China’s Guangxi Zhuang Autonomous Region whose construction started in July 2011.Located at the former site of Yang Tang Airport,it has such historical relics as the Command展开更多
Aceremony was held at the Flying Tiger Guilin Heritage Park on March 25,2017 for the donation of a World War II-era aircraft—a Douglas C-47.CPAFFC Vice-President Xie Yuan read a message from Chinese Vice-Premier Liu ...Aceremony was held at the Flying Tiger Guilin Heritage Park on March 25,2017 for the donation of a World War II-era aircraft—a Douglas C-47.CPAFFC Vice-President Xie Yuan read a message from Chinese Vice-Premier Liu Yandong,in which she extended her sincere welcome and best wishes to the family of General Claire Lee Chennault,veterans of the Flying Tigers and their families。展开更多
文摘THE reforms in the Decision on Major Issues Concerning Comprehensively Deepening Reforms - as well as the actions on the part of the CPC and its Central Commission for Discipline Inspection （CCDI） since the election of the new leadership in 2012 - clearly demonstrate a strong emphasis by the CPC on addressing corruption, building a clean government, and intensifying anti-corruption efforts by going after both ＂tigers＂ and ＂flies＂ - high- and low-ranking corrupt officials. The Decision highlights the determination of the Party to institutionalize anti-corruption efforts.
文摘The Anhui Flying Tiger(Feihu)Automobile Group Corporation is composedof 81 enterprises and institutions forproduction and coordination.The AnhuiHuaihai Machinery Factory—the coreenterprise—is the key national automobilemanufacturer.The factory has total assets ofRMB480 million,staff of 3,400,including500 medium-to-senior technical people,annual production capacity of 50,000 forautomobiles,with their quality proven to beClass A for seven years running.Since1992,the factory has been aiming at theinternational market,exporting more
文摘Volume instability of expansive soils due to moisture fluctuations is often disastrous,causing severe damages and distortions in the supported structures.It is,therefore,necessary to adequately improve the performance of such soils that they can favorably fulfil the post-construction stability requirements.This can be achieved through chemical stabilization using additives such as lime,cement and fly ash.In this paper,suitability of such additives under various conditions and their mechanisms are reviewed in detail.It is observed that the stabilization process primarily involves hydration,cation exchange,flocculation and pozzolanic reactions.The degree of stabilization is controlled by several factors such as additive type,additive content,soil type,soil mineralogy,curing period,curing temperature,delay in compaction,pH of soil matrix,and molding water content,including presence of nano-silica,organic matter and sulfate compounds.Provision of nano-silica not only improves soil packing but also accelerates the pozzolanic reaction.However,presence of deleterious compounds such as sulfate or organic matter can turn the treated soils unfavorable at times even worser than the unstabilized ones.
基金the National Natural Science Foundation of China(No.11872209)。
文摘The previous studies of time delay compensation in flight control systems are all based on the conventional aerodynamic derivative model and conducted in longitudinal motions at low angles of attack.In this investigation,the effects of time delay on the lateral-directional stability augmentation system in high-a regime are discussed based on theβmodel,which is proposed in our previous work and proved as a more accurate aerodynamic model to reveal the lateraldirectional unsteady aerodynamic characteristics at high angles of attack.Both theβmodel and the quasi-steady model are used for simulating the effects of time delay on the flying qualities in high-a maneuvers.The comparison between the simulation results shows that the flying qualities are much more sensitive to the mismatch of feedback gains than the state errors caused by time delay.Then a typical adaptive controller based on the conventional dynamic derivative model and a gain-prediction compensator based onβmodel are designed to address the time delay in different maneuvers.The simulation results show that the gain-prediction compensator is much simpler and more efficient at high angles of attack.Finally,the gain-prediction compensator is combined with a linearizedβmodel reference adaptive controller to compensate the adverse effects of very large time delay,which exhibits excellent performance when addressing the extreme conditions at high angles of attack.
文摘On March 28,Chinese Vice Premier Liu Yandong attended the opening of the Flying Tiger Guilin Heritage Park in Guilin,southwest China’s Guangxi Zhuang Autonomous Region whose construction started in July 2011.Located at the former site of Yang Tang Airport,it has such historical relics as the Command
文摘Aceremony was held at the Flying Tiger Guilin Heritage Park on March 25,2017 for the donation of a World War II-era aircraft—a Douglas C-47.CPAFFC Vice-President Xie Yuan read a message from Chinese Vice-Premier Liu Yandong,in which she extended her sincere welcome and best wishes to the family of General Claire Lee Chennault,veterans of the Flying Tigers and their families。
