We present a scheme for remotely preparing a state via the controls of many agents in a network.In thescheme,the agents' controls are achieved by utilizing quantum key distribution.Generally,the original state can...We present a scheme for remotely preparing a state via the controls of many agents in a network.In thescheme,the agents' controls are achieved by utilizing quantum key distribution.Generally,the original state can berestored by the receiver with probability 1/2 if all the agents collaborate.However,for certain type of original states therestoration probability is unit.展开更多
The technology of pressure relief gas drainage is one of the most effective and economic for preventing gas emissions in underground mines.Based on current understanding of strata breakage and fracture development in ...The technology of pressure relief gas drainage is one of the most effective and economic for preventing gas emissions in underground mines.Based on current understanding of strata breakage and fracture development in overlying strata,the current study divides the overlying strata into the following three longitudinal zones in terms of the state of gas flow:a turbulent channel zone,a transitional circulation channel zone and a seepage channel zone.According to the key strata discrimination theory of controlling the overlying strata,the calculation method establishes that the step-type expansion of the mining gas channel corresponds to the advancing distance of working face,and this research also confrms the expanding rule that the mining gas channel in overlying strata follows the advancing distance of mining working face.Based on the geological conditions of Xinjing Coal Mine of Yangquan,this paper researches the expanding rule of mining gas channel as well as the control action of the channel acting on the pressure relief flow under the condition of the remote protective layer,and got the distance using inversion that the step-type expanding of mining gas channel is corresponding to the advancing distance of working face,which verifes the accuracy and feasibility of theoretical calculation method proposed in this study.The research provides the theoretical basis for choosing the technology of pressure relief gas drainage and designing the parameters of construction.展开更多
Based on the quadratic supply rate, the problem of robust dissipative control for a class of uncertain nonlinear system with sector nonlinear input is discussed. The uncertainty is described by bounded norm. It is sho...Based on the quadratic supply rate, the problem of robust dissipative control for a class of uncertain nonlinear system with sector nonlinear input is discussed. The uncertainty is described by bounded norm. It is shown that the robust dissipative control problem can be resolved for all admissible uncertainty, if there exists a storage function such that Hamilton Jacobi inequality holds. When the uncertainties of the system satisfy the matching condition, and input function within the boundedness of the sector, the closed loop system will be stronger dissipativeness, and the controller which we obtained in the paper is more flexible, because it contains an adjustable parameter for some certain range.展开更多
User Objects are the basement in developing distributed PowerBuilder applications. There are two kinds of PowerBuilder objects: visual objects and non-visual objects. Usually we use non-visual objects to perform the P...User Objects are the basement in developing distributed PowerBuilder applications. There are two kinds of PowerBuilder objects: visual objects and non-visual objects. Usually we use non-visual objects to perform the PowerBuilder distriuted application. This paper introduces the method of developing PowerBuilder distributed application program, mainly discusses the application of nonvisual objects when developing PowerBuilder distributed application programs.展开更多
Improving the Quality of Service (QoS) of Internet traffic is widely recognized as a critical issue for the next-generation networks. In this paper, we present a new algorithm for the active queue management, namely R...Improving the Quality of Service (QoS) of Internet traffic is widely recognized as a critical issue for the next-generation networks. In this paper, we present a new algorithm for the active queue management, namely RED-DTB. This buffer control technique is used to enforce approximate fairness among a large number of concurrent Internet flows. Like RED (Random Early Detection) algorithm, the RED-DTB mechanism can be deployed to actively respond to the gateway congestion, keep the gateway in a healthy state, and protect the fragile flows from being stolen bandwidth by greedy ones. The algorithm is based on the so-called Dual Token Bucket (DTB) pattern. That is, on the one hand, every flow is rate-limited by its own token bucket, to ensure that it can not consume more than its fair share of bandwidth; On the other hand, to make some compensations to less aggressive flows, such as connections with larger round trip time or smaller sending window, and to gain a relatively higher system utilization coefficient, all flows, depending on their individual behavior, may have a chance to fetch tokens from the public token bucket when they run out of their own share of tokens. The algorithm is analyzed and evaluated by simulations, and is proved to be effective in protecting the gateway buffer and controlling the fair allocation of bandwidth among flows.展开更多
Objective To observe the efficacy of treating vascular dementia gait disorder with electroacupuncture （EA） on Jiaji （夹脊EX-B2） along the lumbar vertebra combined with scalp acupuncture, in order to explore a more...Objective To observe the efficacy of treating vascular dementia gait disorder with electroacupuncture （EA） on Jiaji （夹脊EX-B2） along the lumbar vertebra combined with scalp acupuncture, in order to explore a more effective therapeutic method. Methods Forty-two patients were divided into an acupuncture group and a drug group according to the method of random number table, with 21 cases in each group. EA on EX-B2 from L2 to L5 （bilateral） and scalp acupuncture on Baihui （百会 CV 20） and Sishencong （四神聪EX-HN 1） were applied in the acupuncture group, once a day the course of treatment was 30 days; Duxil was taken orally by the drug group, one pill twice a day for 30 days as a course of treatment. After treatment was completed, the efficacy was evaluated and activities of daily living （ADL） were compared between the two groups. Results The total effectiveness rate for the acupuncture group was 90.5%, which was significantly better than that of the drug group （61.9%）, and the differences were statistically significant （P〈0.05）; ADL was compared before and after treatment, and the differences were statistically significant （the acupuncture group： 24.52±9.34 vs 32.85±13.56; the drug group： 25.47±10.04 vs 29.99±13.87, both P〈0.01）; after treatment, ADL, including gait disorders, in the acupuncture group was more significantly improved than that of the drug group, and the differences were statistically significant （32.85±13.56 vs 29.99± 13.87, P〈0.01）. Conclusion The efficacy of treating vascular dementia gait disorder with electro-acupuncture （EA） on EX-B2 along lumbar vertebra combined with scalp acupuncture was superior to orally administered Duxil.展开更多
基金Supported by the program for New Century Excellent Talents at the University of China under Grant No.NCET-06-0554the National Natural Science Foundation of China under Grant Nos.60677001,50672001,10874122,and 10747146+2 种基金the Science-Technology Fund of Anhui Province for Outstanding Youth under Grant No.06042087the Key Fund of the Ministry of Education of China under Grant No.206063the Natural Science Foundation of Guangdong Province under Grant Nos.06300345 and 7007806
文摘We present a scheme for remotely preparing a state via the controls of many agents in a network.In thescheme,the agents' controls are achieved by utilizing quantum key distribution.Generally,the original state can berestored by the receiver with probability 1/2 if all the agents collaborate.However,for certain type of original states therestoration probability is unit.
基金the National Basic Research Programs of China (No. 2011CB201204)the National Natural Science Foundation of China (Nos. 51074160)+1 种基金the Fundamental Research Funds for the Central Universities (No. 2010QNA03)Project Funded by the Priority Academic Program Development of Jiangsu Higher Education institutions for their support for this project
文摘The technology of pressure relief gas drainage is one of the most effective and economic for preventing gas emissions in underground mines.Based on current understanding of strata breakage and fracture development in overlying strata,the current study divides the overlying strata into the following three longitudinal zones in terms of the state of gas flow:a turbulent channel zone,a transitional circulation channel zone and a seepage channel zone.According to the key strata discrimination theory of controlling the overlying strata,the calculation method establishes that the step-type expansion of the mining gas channel corresponds to the advancing distance of working face,and this research also confrms the expanding rule that the mining gas channel in overlying strata follows the advancing distance of mining working face.Based on the geological conditions of Xinjing Coal Mine of Yangquan,this paper researches the expanding rule of mining gas channel as well as the control action of the channel acting on the pressure relief flow under the condition of the remote protective layer,and got the distance using inversion that the step-type expanding of mining gas channel is corresponding to the advancing distance of working face,which verifes the accuracy and feasibility of theoretical calculation method proposed in this study.The research provides the theoretical basis for choosing the technology of pressure relief gas drainage and designing the parameters of construction.
基金the National Natural Science Foundation of China(6987401569934030)and Foundation of the Education Department of Hubei Province(99A121)
文摘Based on the quadratic supply rate, the problem of robust dissipative control for a class of uncertain nonlinear system with sector nonlinear input is discussed. The uncertainty is described by bounded norm. It is shown that the robust dissipative control problem can be resolved for all admissible uncertainty, if there exists a storage function such that Hamilton Jacobi inequality holds. When the uncertainties of the system satisfy the matching condition, and input function within the boundedness of the sector, the closed loop system will be stronger dissipativeness, and the controller which we obtained in the paper is more flexible, because it contains an adjustable parameter for some certain range.
文摘为使智能机器人远程控制更加方便、快捷、人性化,设计并实现了一种智能机器人的语音远程控制系统方案。该方案利用微软语音开发包Microsoft SpeechS DK,构建基于听写模式的大词汇量语音识别模块和语音合成模块,利用海量中文智能分词组件构建关键词检测模块,结合VFW(Video For Windows)技术与无线网络技术构建信息传输模块。实验表明,该系统语音识别准确率高,识别范围广,语音输入灵活。
文摘User Objects are the basement in developing distributed PowerBuilder applications. There are two kinds of PowerBuilder objects: visual objects and non-visual objects. Usually we use non-visual objects to perform the PowerBuilder distriuted application. This paper introduces the method of developing PowerBuilder distributed application program, mainly discusses the application of nonvisual objects when developing PowerBuilder distributed application programs.
基金the National Natural Science Foundation of China(60132030)and the National Education Department Doctorial Foundation Project(RFDP1999048602)
文摘Improving the Quality of Service (QoS) of Internet traffic is widely recognized as a critical issue for the next-generation networks. In this paper, we present a new algorithm for the active queue management, namely RED-DTB. This buffer control technique is used to enforce approximate fairness among a large number of concurrent Internet flows. Like RED (Random Early Detection) algorithm, the RED-DTB mechanism can be deployed to actively respond to the gateway congestion, keep the gateway in a healthy state, and protect the fragile flows from being stolen bandwidth by greedy ones. The algorithm is based on the so-called Dual Token Bucket (DTB) pattern. That is, on the one hand, every flow is rate-limited by its own token bucket, to ensure that it can not consume more than its fair share of bandwidth; On the other hand, to make some compensations to less aggressive flows, such as connections with larger round trip time or smaller sending window, and to gain a relatively higher system utilization coefficient, all flows, depending on their individual behavior, may have a chance to fetch tokens from the public token bucket when they run out of their own share of tokens. The algorithm is analyzed and evaluated by simulations, and is proved to be effective in protecting the gateway buffer and controlling the fair allocation of bandwidth among flows.
基金Supported by the first batch of research projects of the studio of "Henan SHAO’s acupuncture stream",one of the nationally recognized schools of traditional Chinese medicine
文摘Objective To observe the efficacy of treating vascular dementia gait disorder with electroacupuncture （EA） on Jiaji （夹脊EX-B2） along the lumbar vertebra combined with scalp acupuncture, in order to explore a more effective therapeutic method. Methods Forty-two patients were divided into an acupuncture group and a drug group according to the method of random number table, with 21 cases in each group. EA on EX-B2 from L2 to L5 （bilateral） and scalp acupuncture on Baihui （百会 CV 20） and Sishencong （四神聪EX-HN 1） were applied in the acupuncture group, once a day the course of treatment was 30 days; Duxil was taken orally by the drug group, one pill twice a day for 30 days as a course of treatment. After treatment was completed, the efficacy was evaluated and activities of daily living （ADL） were compared between the two groups. Results The total effectiveness rate for the acupuncture group was 90.5%, which was significantly better than that of the drug group （61.9%）, and the differences were statistically significant （P〈0.05）; ADL was compared before and after treatment, and the differences were statistically significant （the acupuncture group： 24.52±9.34 vs 32.85±13.56; the drug group： 25.47±10.04 vs 29.99±13.87, both P〈0.01）; after treatment, ADL, including gait disorders, in the acupuncture group was more significantly improved than that of the drug group, and the differences were statistically significant （32.85±13.56 vs 29.99± 13.87, P〈0.01）. Conclusion The efficacy of treating vascular dementia gait disorder with electro-acupuncture （EA） on EX-B2 along lumbar vertebra combined with scalp acupuncture was superior to orally administered Duxil.
