Taking overall planning of tour routes as the guiding concept of regional tourism development,one core,three subjects,three sections and three levels in the overall planning of tour routes were explored. Range,plannin...Taking overall planning of tour routes as the guiding concept of regional tourism development,one core,three subjects,three sections and three levels in the overall planning of tour routes were explored. Range,planning principle,optimized layout of travel channels,construction of tourist towns,construction of scenic areas,construction of highway landscapes along travel channels,construction of tourist distribution centers in the overall planning of tourist routes for Panzhihua City,Sichuan Province were elaborated. Signifi cance of the overall planning of tour routes was summarized.展开更多
The Burst Time Plan(BTP) generation is the key for resource allocation in Broadband Satellite Multimedia(BSM) system.The main purpose of this paper is to minimize the system response time to users' request caused ...The Burst Time Plan(BTP) generation is the key for resource allocation in Broadband Satellite Multimedia(BSM) system.The main purpose of this paper is to minimize the system response time to users' request caused by BTP generation as well as maintain the Quality of Service(QoS) and improve the channel utilization efficiency.Traditionally the BTP is generated periodically in order to simplify the implementation of the resource allocation algorithm.Based on the analysis we find that Periodical BTP Generation(P-BTPG) method cannot guarantee the delay performance,channel utilization efficiency and QoS simultaneously,especially when the capacity requests arrived randomly.The Optimized BTP Generation(O-BTPG) method is given based on the optimal scheduling period and scheduling latency without considering the signaling overhead.Finally,a novel Asynchronous BTP Generation(A-BTPG) method is proposed which is invoked according to users' requests.A BSM system application scenario is simulated.Simulation results show that A-BTPG is a trade-off between the performance and signaling overhead which can improve the system performance insensitive to the traffic pattern.This method can be used in the ATM onboard switching satellite system and further more can be expended to Digital Video Broadcasting-Return Channel Satellite(DVB-RCS) system or IP onboard routing BSM system in the future.展开更多
文摘Taking overall planning of tour routes as the guiding concept of regional tourism development,one core,three subjects,three sections and three levels in the overall planning of tour routes were explored. Range,planning principle,optimized layout of travel channels,construction of tourist towns,construction of scenic areas,construction of highway landscapes along travel channels,construction of tourist distribution centers in the overall planning of tourist routes for Panzhihua City,Sichuan Province were elaborated. Signifi cance of the overall planning of tour routes was summarized.
基金Supported by the National Natural Science Foundation ofChina (No. 60972061,60972062,and 61032004)the Na-tional High Technology Research and Development Program of China ("863" Program) (No. 2008AA12A204,2008AA12Z307)+1 种基金Natural Science Foundation of Jiangsu Province (BK2009060)the"Triple Three" High Level Talent Development Plan of Jiangsu Province
文摘The Burst Time Plan(BTP) generation is the key for resource allocation in Broadband Satellite Multimedia(BSM) system.The main purpose of this paper is to minimize the system response time to users' request caused by BTP generation as well as maintain the Quality of Service(QoS) and improve the channel utilization efficiency.Traditionally the BTP is generated periodically in order to simplify the implementation of the resource allocation algorithm.Based on the analysis we find that Periodical BTP Generation(P-BTPG) method cannot guarantee the delay performance,channel utilization efficiency and QoS simultaneously,especially when the capacity requests arrived randomly.The Optimized BTP Generation(O-BTPG) method is given based on the optimal scheduling period and scheduling latency without considering the signaling overhead.Finally,a novel Asynchronous BTP Generation(A-BTPG) method is proposed which is invoked according to users' requests.A BSM system application scenario is simulated.Simulation results show that A-BTPG is a trade-off between the performance and signaling overhead which can improve the system performance insensitive to the traffic pattern.This method can be used in the ATM onboard switching satellite system and further more can be expended to Digital Video Broadcasting-Return Channel Satellite(DVB-RCS) system or IP onboard routing BSM system in the future.
