电化学储能(electrochemical energy storage,EES)内部的多种功能性老化行为是影响EES规划决策以及经济性评估的重要因素。针对独立运营模式下EES同时参与电能量和调频市场的容量配置问题,首先提出计及功能性衰减的EES两阶段容量优化配...电化学储能(electrochemical energy storage,EES)内部的多种功能性老化行为是影响EES规划决策以及经济性评估的重要因素。针对独立运营模式下EES同时参与电能量和调频市场的容量配置问题,首先提出计及功能性衰减的EES两阶段容量优化配置决策模型。第一阶段模型以EES期望寿命周期内收益最大化为目标进行EES容量优化配置;第二阶段模型考虑EES寿命和功能性老化行为约束,以日运行利润最大化为目标优化各运行年内EES运营决策。然后采用多参数规划理论方法对两阶段模型进行联合优化求解,以获得独立运营模式下EES的配置容量及其期望寿命。最后通过算例仿真分析了EES的功能性老化行为对其经济寿命及容量配置的影响,验证了所提模型和方法的有效性。展开更多
miR-142 and miR-223 have been identified as hematopoietic specific microRNAs, miR-223 has crucial functions in myeloid lineage development. However, the function of miR-142 remains unclear. In this study, we found tha...miR-142 and miR-223 have been identified as hematopoietic specific microRNAs, miR-223 has crucial functions in myeloid lineage development. However, the function of miR-142 remains unclear. In this study, we found that both miR-142 and miR-223 attenuated the proliferation of hematopoietic cells, and that miR-223 up-regulated miR-142 expression through the LMO2-L/-S isoforms and CEBP-p. miR-223 negatively regulated both LMO2-L/-S isoforms and CEBP-β post-transcriptionally, while CEBP-βpositively regulated the LMO2-L/-S isoforms and both of the LMO2-L/-S isoforms negatively regulated miR-142. These results reveal a novel miR-223--CEBP-β-LMO2-- miR-142 regulatory pathway, which has pivotal functions in hematopoiesis.展开更多
Energy consumption is a crucial design concern in Mobile Ad hoc NETworks (MANETs) since nodes are powered by batteries with limited energy, whereas Dynamic Source Routing (DSR) protocol does not take the energy limita...Energy consumption is a crucial design concern in Mobile Ad hoc NETworks (MANETs) since nodes are powered by batteries with limited energy, whereas Dynamic Source Routing (DSR) protocol does not take the energy limitation of MANET nodes into account. This paper proposes an energy-saving routing algorithm based on DSR: Power Aware Routing protocol based on DSR (PAR-DSR). The design objective of PAR-DSR is to select energy-efficient paths. The main features of PAR-DSR are: (1) Nodes use the Signal Attenuation Rate (SAR) to conduct power control operations; (2) Minimum path cost as metric to balance the traffic and energy consumption of wireless nodes. The simulation results show that PAR-DSR can greatly reduce the energy consumption of MANET nodes. The average node lifetime of PAR-DSR is 50%-77% longer than that of DSR.展开更多
The authors prove the global exact boundary controllability for the cubic semilinear wave equation in three space dimensions,subject to Dirichlet,Neumann,or any other kind of boundary controls which result in the well...The authors prove the global exact boundary controllability for the cubic semilinear wave equation in three space dimensions,subject to Dirichlet,Neumann,or any other kind of boundary controls which result in the well-posedness of the corresponding initial-boundary value problem.The exponential decay of energy is first established for the cubic semi-linear wave equation with some boundary condition by the multiplier method,which reduces the global exact boundary controllability problem to a local one.The proof is carried out in line with [2,15].Then a constructive method that has been developed in [13] is used to study the local problem.Especially when the region is star-complemented,it is obtained that the control function only need to be applied on a relatively open subset of the boundary.For the cubic Klein-Gordon equation,similar results of the global exact boundary controllability are proved by such an idea.展开更多
文摘电化学储能(electrochemical energy storage,EES)内部的多种功能性老化行为是影响EES规划决策以及经济性评估的重要因素。针对独立运营模式下EES同时参与电能量和调频市场的容量配置问题,首先提出计及功能性衰减的EES两阶段容量优化配置决策模型。第一阶段模型以EES期望寿命周期内收益最大化为目标进行EES容量优化配置;第二阶段模型考虑EES寿命和功能性老化行为约束,以日运行利润最大化为目标优化各运行年内EES运营决策。然后采用多参数规划理论方法对两阶段模型进行联合优化求解,以获得独立运营模式下EES的配置容量及其期望寿命。最后通过算例仿真分析了EES的功能性老化行为对其经济寿命及容量配置的影响,验证了所提模型和方法的有效性。
基金This work was supported by the National Natural Science Foundation of China （Grant No. 30771054）.
文摘miR-142 and miR-223 have been identified as hematopoietic specific microRNAs, miR-223 has crucial functions in myeloid lineage development. However, the function of miR-142 remains unclear. In this study, we found that both miR-142 and miR-223 attenuated the proliferation of hematopoietic cells, and that miR-223 up-regulated miR-142 expression through the LMO2-L/-S isoforms and CEBP-p. miR-223 negatively regulated both LMO2-L/-S isoforms and CEBP-β post-transcriptionally, while CEBP-βpositively regulated the LMO2-L/-S isoforms and both of the LMO2-L/-S isoforms negatively regulated miR-142. These results reveal a novel miR-223--CEBP-β-LMO2-- miR-142 regulatory pathway, which has pivotal functions in hematopoiesis.
文摘Energy consumption is a crucial design concern in Mobile Ad hoc NETworks (MANETs) since nodes are powered by batteries with limited energy, whereas Dynamic Source Routing (DSR) protocol does not take the energy limitation of MANET nodes into account. This paper proposes an energy-saving routing algorithm based on DSR: Power Aware Routing protocol based on DSR (PAR-DSR). The design objective of PAR-DSR is to select energy-efficient paths. The main features of PAR-DSR are: (1) Nodes use the Signal Attenuation Rate (SAR) to conduct power control operations; (2) Minimum path cost as metric to balance the traffic and energy consumption of wireless nodes. The simulation results show that PAR-DSR can greatly reduce the energy consumption of MANET nodes. The average node lifetime of PAR-DSR is 50%-77% longer than that of DSR.
基金supported by the National Natural Science Foundation of China (No. 10728101)the 973 Project ofthe Ministry of Science and Technology of China+1 种基金the Doctoral Program Foundation of the Ministry of Ed-ucation of Chinathe "111" Project and the Postdoctoral Science Foundation of China (No. 20070410160)
文摘The authors prove the global exact boundary controllability for the cubic semilinear wave equation in three space dimensions,subject to Dirichlet,Neumann,or any other kind of boundary controls which result in the well-posedness of the corresponding initial-boundary value problem.The exponential decay of energy is first established for the cubic semi-linear wave equation with some boundary condition by the multiplier method,which reduces the global exact boundary controllability problem to a local one.The proof is carried out in line with [2,15].Then a constructive method that has been developed in [13] is used to study the local problem.Especially when the region is star-complemented,it is obtained that the control function only need to be applied on a relatively open subset of the boundary.For the cubic Klein-Gordon equation,similar results of the global exact boundary controllability are proved by such an idea.
