ISO/TC59拟成立WG4（1）工作组名称建筑和土木工程的恢复力Resilience of buildings and civil engineering works（2）成立背景TC59建筑和土木工程技术委员会在2016柏林的咨询组会议中讨论并通过了决议,成立新的工作组WG4——建筑和土...ISO/TC59拟成立WG4（1）工作组名称建筑和土木工程的恢复力Resilience of buildings and civil engineering works（2）成立背景TC59建筑和土木工程技术委员会在2016柏林的咨询组会议中讨论并通过了决议,成立新的工作组WG4——建筑和土木工程的恢复力。现提名工作组召集人和专家。展开更多
To solve the problem of supporting three downhill coal structures in the Yongan Coal Mine of Shanxi Jincheng, we studied the regular development of stress and plastic zones and characteristics of deformation of rock s...To solve the problem of supporting three downhill coal structures in the Yongan Coal Mine of Shanxi Jincheng, we studied the regular development of stress and plastic zones and characteristics of deformation of rock surrounding roadway groups after a period of roadway driving, mining one side as well as mining both sides, we used FLAC 3D for our numerical and theoretical analyses. Field test were carried out, where we revealed the deformation mechanism of roadways and its coal pillars in complex stress conditions. We proposed a roadway stability control technology using backwall grouting with high-water rapid hardening material and combined support with bolt and cable anchoring after mining both sides. Our field practices showed that deformation of rock surrounding roadways can be controlled with this technology.展开更多
With the increase of network complexity,the flexibility of network control and management becomes a nontrivial problem.Both Software Defined Network(SDN) and Autonomic Network technologies are sophisticated technologi...With the increase of network complexity,the flexibility of network control and management becomes a nontrivial problem.Both Software Defined Network(SDN) and Autonomic Network technologies are sophisticated technologies for the network control and management.These two technologies could be combined together to construct a software defined self-managing solution for the future network.An autonomic QoS management mechanism in Software Defined Network(AQSDN) is proposed in this paper.In AQSDN,the various QoS features can be configured autonomically in an OpenFlow switch through extending the OpenFlow and OF-Config protocols.Based on AQSDN,a novel packet context-aware QoS model(PCaQoS) is also introduced for improving the network QoS.PCaQoS takes packet context into account when packet is marked and managed into forwarding queues.The implementation of a video application's prototype which evaluates the self-configuration feature of the AQSDN and the enhancement ability of the PCaQoS is presented in order to validate this design.展开更多
文摘ISO/TC59拟成立WG4（1）工作组名称建筑和土木工程的恢复力Resilience of buildings and civil engineering works（2）成立背景TC59建筑和土木工程技术委员会在2016柏林的咨询组会议中讨论并通过了决议,成立新的工作组WG4——建筑和土木工程的恢复力。现提名工作组召集人和专家。
基金Financial support for this work,provided by the National Natural Science Foundation of China (No.50774077)the Research Foundation of the State Key Laboratory of Coal Resources and Mine Safety (No.SKLCRSM08X04)+3 种基金the National Basic Research Program of China (No.2007CB209401)the Foundation for the Author of National Excellent Doctoral Dissertation of China (No.200760)the Program for New Century Excellent Talents in University (No.NCET-06-0475)the Science Foundation for Youth of China University of Mining and Technology (No.2008A002)
文摘To solve the problem of supporting three downhill coal structures in the Yongan Coal Mine of Shanxi Jincheng, we studied the regular development of stress and plastic zones and characteristics of deformation of rock surrounding roadway groups after a period of roadway driving, mining one side as well as mining both sides, we used FLAC 3D for our numerical and theoretical analyses. Field test were carried out, where we revealed the deformation mechanism of roadways and its coal pillars in complex stress conditions. We proposed a roadway stability control technology using backwall grouting with high-water rapid hardening material and combined support with bolt and cable anchoring after mining both sides. Our field practices showed that deformation of rock surrounding roadways can be controlled with this technology.
基金This work was supported in part by the National High Technology Research and Development Program （863 Program） of China under Grant No. 2011AA01A101, No.2013AA013303, No.2013AA013301and National Natural science foundation of China No. 61370197 ＆ 61271041.
文摘With the increase of network complexity,the flexibility of network control and management becomes a nontrivial problem.Both Software Defined Network(SDN) and Autonomic Network technologies are sophisticated technologies for the network control and management.These two technologies could be combined together to construct a software defined self-managing solution for the future network.An autonomic QoS management mechanism in Software Defined Network(AQSDN) is proposed in this paper.In AQSDN,the various QoS features can be configured autonomically in an OpenFlow switch through extending the OpenFlow and OF-Config protocols.Based on AQSDN,a novel packet context-aware QoS model(PCaQoS) is also introduced for improving the network QoS.PCaQoS takes packet context into account when packet is marked and managed into forwarding queues.The implementation of a video application's prototype which evaluates the self-configuration feature of the AQSDN and the enhancement ability of the PCaQoS is presented in order to validate this design.
