专业模型成果数据是油田重要的数据资产,但该类数据格式多样、数据量大,且以数据体方式存储,难以适应大数据应用场景,建立一套油田模型成果数据解析技术体系,解析地震解释模型、地质模型、数值模拟等成果数据为明码可读模式,制定成果数...专业模型成果数据是油田重要的数据资产,但该类数据格式多样、数据量大,且以数据体方式存储,难以适应大数据应用场景,建立一套油田模型成果数据解析技术体系,解析地震解释模型、地质模型、数值模拟等成果数据为明码可读模式,制定成果数据统一存储格式标准规范,采用层次性数据格式第5版(hierarchical data format version 5,HDF5)存储技术统一存储,提供公共数据接口服务,有效支持结构化成果、半结构化成果和非结构化成果的多源异构数据融合处理,成为大数据研究场景中需要的可靠的样本数据资源。展开更多
In this paper,using the input-output model,the author first calculated the CO 2 emissions embodied in exports of China in 2002 and 2007.Then,the author empirically analyzed problems existing in the composition of expo...In this paper,using the input-output model,the author first calculated the CO 2 emissions embodied in exports of China in 2002 and 2007.Then,the author empirically analyzed problems existing in the composition of exported products and analyzed its possible reasons.The research results of this paper are as follows:Since China's entry into WTO,the CO 2 emissions embodied in exports of China have been increasing rapidly;the value of exported products of high-carbon emissions industries accounts for a relatively higher proportion to China's total exports value because China's carbon intensive products have a certain competitive advantage.Additionally,this paper has put forward relevant suggestions based on these results.展开更多
Recently the content centric networks(CCNs) have been advocated as a new solution to design future networks. In the CCNs, content and its interest are delivered over the content store and pending interest table, respe...Recently the content centric networks(CCNs) have been advocated as a new solution to design future networks. In the CCNs, content and its interest are delivered over the content store and pending interest table, respectively, where both have limited capacities. Therefore, how to design the corresponding algorithms to efficiently deliver content and inertest over them becomes an important issue. In this paper, based on the analysis of content distribution, status of content store, and pending interest, we propose a novel caching algorithm with which the resources of content store and pending interest table can be efficiently used. Simulation results prove that the proposal can outperform the conventional methods.展开更多
The creative talents are of constructive significance to the development of the country. Starting from the early exploration and the scientific definition of the creativity of the talents, this article summarizes the ...The creative talents are of constructive significance to the development of the country. Starting from the early exploration and the scientific definition of the creativity of the talents, this article summarizes the research achievements of the creativity of talents in China from three aspects of the determination of the nature and the research of the structural model, the research of the relationship between creativity and other factors, and the development and research of the cross cultural creativity. And from the perspective of the theory and the practice, the author puts forward the ways to cultivate the creativity of the talents from the five dimensions of optimizing the development of the brain functions, improving the abilities of the thinking, judgment and control, debugging the emotional stability and the creative personality, striving to improve the teachers＇ creativity, and drawing lessons from the practical experience of training innovative talents in western countries.展开更多
The scheduling utility plays a fundamental role in addressing the commuting travel behaviours. A new scheduling utility,termed as DMRD-SU, was suggested based on some recent research findings in behavioural economics....The scheduling utility plays a fundamental role in addressing the commuting travel behaviours. A new scheduling utility,termed as DMRD-SU, was suggested based on some recent research findings in behavioural economics. DMRD-SU admitted the existence of positive arrival-caused utility. In addition, besides the travel-time-caused utility and arrival-caused utility, DMRD-SU firstly took the departure utility into account. The necessity of the departure utility in trip scheduling was analyzed comprehensively,and the corresponding individual trip scheduling model was presented. Based on a simple network, an analytical example was executed to characterize DMRD-SU. It can be found from the analytical example that: 1) DMRD-SU can predict the accumulation departure behaviors at NDT, which explains the formation of daily serious short-peak-hours in reality, while MRD-SU cannot; 2)Compared with MRD-SU, DMRD-SU predicts that people tend to depart later and its gross utility also decreases faster. Therefore,the departure utility should be considered to describe the traveler's scheduling behaviors better.展开更多
In order to improve the dynamic response bandwidth of three-stage electro-hydraulic servo valve,a new method,speed-feedback control is presented in this paper.The construction and principle of three-stage electro-hydr...In order to improve the dynamic response bandwidth of three-stage electro-hydraulic servo valve,a new method,speed-feedback control is presented in this paper.The construction and principle of three-stage electro-hydraulic servo valve are explained,and the mathematical model of three-stage electro-hydraulic servo valve is built in frequency domain.Experimental and simulation results show that the bandwidth compared with proportional control is improved under speed-feedback control.Moreover,the research results play an important role in developing high performance three-stage electro-hydraulic servo valve.展开更多
文摘专业模型成果数据是油田重要的数据资产,但该类数据格式多样、数据量大,且以数据体方式存储,难以适应大数据应用场景,建立一套油田模型成果数据解析技术体系,解析地震解释模型、地质模型、数值模拟等成果数据为明码可读模式,制定成果数据统一存储格式标准规范,采用层次性数据格式第5版(hierarchical data format version 5,HDF5)存储技术统一存储,提供公共数据接口服务,有效支持结构化成果、半结构化成果和非结构化成果的多源异构数据融合处理,成为大数据研究场景中需要的可靠的样本数据资源。
基金funded by 2011 the Humanities and Social Sciences Research Program of Education Ministry of P.R.China (Grant No.11YJA790229)
文摘In this paper,using the input-output model,the author first calculated the CO 2 emissions embodied in exports of China in 2002 and 2007.Then,the author empirically analyzed problems existing in the composition of exported products and analyzed its possible reasons.The research results of this paper are as follows:Since China's entry into WTO,the CO 2 emissions embodied in exports of China have been increasing rapidly;the value of exported products of high-carbon emissions industries accounts for a relatively higher proportion to China's total exports value because China's carbon intensive products have a certain competitive advantage.Additionally,this paper has put forward relevant suggestions based on these results.
基金supported in part by the fundamental key research project of Shanghai Municipal Science and Technology Commission under grant 12JC1404201the Ministry of Education Research Fund-China Mobile(2012) MCM20121032
文摘Recently the content centric networks(CCNs) have been advocated as a new solution to design future networks. In the CCNs, content and its interest are delivered over the content store and pending interest table, respectively, where both have limited capacities. Therefore, how to design the corresponding algorithms to efficiently deliver content and inertest over them becomes an important issue. In this paper, based on the analysis of content distribution, status of content store, and pending interest, we propose a novel caching algorithm with which the resources of content store and pending interest table can be efficiently used. Simulation results prove that the proposal can outperform the conventional methods.
文摘The creative talents are of constructive significance to the development of the country. Starting from the early exploration and the scientific definition of the creativity of the talents, this article summarizes the research achievements of the creativity of talents in China from three aspects of the determination of the nature and the research of the structural model, the research of the relationship between creativity and other factors, and the development and research of the cross cultural creativity. And from the perspective of the theory and the practice, the author puts forward the ways to cultivate the creativity of the talents from the five dimensions of optimizing the development of the brain functions, improving the abilities of the thinking, judgment and control, debugging the emotional stability and the creative personality, striving to improve the teachers＇ creativity, and drawing lessons from the practical experience of training innovative talents in western countries.
基金Projects(71131001,71271023,71471014)supported by National Natural Science Foundation of ChinaProject(2012CB725403)supported by National Basic Research Program of ChinaProject(2011AA110303)supported by National High Technology Research and Development Program of China
文摘The scheduling utility plays a fundamental role in addressing the commuting travel behaviours. A new scheduling utility,termed as DMRD-SU, was suggested based on some recent research findings in behavioural economics. DMRD-SU admitted the existence of positive arrival-caused utility. In addition, besides the travel-time-caused utility and arrival-caused utility, DMRD-SU firstly took the departure utility into account. The necessity of the departure utility in trip scheduling was analyzed comprehensively,and the corresponding individual trip scheduling model was presented. Based on a simple network, an analytical example was executed to characterize DMRD-SU. It can be found from the analytical example that: 1) DMRD-SU can predict the accumulation departure behaviors at NDT, which explains the formation of daily serious short-peak-hours in reality, while MRD-SU cannot; 2)Compared with MRD-SU, DMRD-SU predicts that people tend to depart later and its gross utility also decreases faster. Therefore,the departure utility should be considered to describe the traveler's scheduling behaviors better.
基金Ministry of Science and Technology of China(No.2006BAF01B12-03)
文摘In order to improve the dynamic response bandwidth of three-stage electro-hydraulic servo valve,a new method,speed-feedback control is presented in this paper.The construction and principle of three-stage electro-hydraulic servo valve are explained,and the mathematical model of three-stage electro-hydraulic servo valve is built in frequency domain.Experimental and simulation results show that the bandwidth compared with proportional control is improved under speed-feedback control.Moreover,the research results play an important role in developing high performance three-stage electro-hydraulic servo valve.
