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Materials Data Sharing and Service safety Assessment Platform in MSAF

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Materials Data Sharing and Service Safety Assessment Platfor...

第二届亚洲材料数据库会议

作者： Dongbai Sun Lijun Zhang Peng Shi Weidong Zhang Qiang Feng national center for Materials Service safety university of Science and Technology Beijing Beijing 100083 china

＜正＞Background of the project Materials performance and safety assessment is an important issue for public and national *** depends on sufficient scientific data and various assessment *** organizations and projects... 详细信息

关键词： engineering materials data sharing service safety assessment MSAF

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地面灌溉土壤入渗参数时空变异性试验研究

水土保持学报 2005年第5期19卷 120-123,151页

作者：白美健许迪李益农李久生中国水利水电科学研究院水利研究所国家节水灌溉工程技术研究中心北京100044

基于典型田块的试验观测数据,开展地面灌溉条件下冬小麦生长期间土壤入渗性能时空变异性的试验研究,描述土壤入渗参数的时空变异分布特征,分析各参数间存在的相关关系。结果表明,在冬小麦生长期内,土壤入渗参数的空间变异强度呈持续性... 详细信息

基于典型田块的试验观测数据,开展地面灌溉条件下冬小麦生长期间土壤入渗性能时空变异性的试验研究,描述土壤入渗参数的时空变异分布特征,分析各参数间存在的相关关系。结果表明,在冬小麦生长期内,土壤入渗参数的空间变异强度呈持续性减弱趋势,其时间变异性逐渐下降并趋于稳定。土壤入渗性能在冬灌后各时段间的差异并不显著,故在此后的灌溉试验设计与管理或地面灌溉模拟中,可基本无需考虑土壤入渗性能的时间变异性影响。考虑到土壤入渗参数f0和Z180之间存在着强烈的互相关性和非常相近的时空变异分布特征,可借助f0的时空变异分布特点达到描述土壤入渗性能、衡量土壤入渗能力的目的。

关键词：试验入渗地面灌溉时空变异性

Identification of QTLs for grain size and characterization of the beneficial alleles of grain size genes in large grain rice variety BL129

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Journal of Integrative Agriculture 2016年第1期15卷 1-9页

作者： GAO Xua ZHU Xu-dong FANG Na DUAN Peng-gen WU Ying-bao LUO Yue-hua LI Yun-hai Hainan Key Laboratory for Sustainable utilization of Tropical Bioresources/Agricultural College Hainan UniversityHaikou 570228P.R.China State Key Laboratory of Rice Biology China National Rice Research InstituteChinese Academy of Agricultural SciencesHangzhou 310006P.R.China State Key Laboratory of Plant Cell and Chromosome engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101P.R.China

Grain size is one of the most important agronomic components of grain yield. Grain length, width and thickness are controlled by multiple quantitative trait loci （QTLs）. To understand genetic basis of large grain shape and explore the beneficial alleles for grain size improvement, we perform QTL analysis using an F2 population derived from a cross between the japonica variety Beilu 129 （BL129, wide and thick grain） and the elite indica variety Huazhan （HZ, narrow and long grain）. A total number of eight major QTLs are detected on three different chromosomes. QTLs for grain width （qGW）, grain thickness （qGT）, brown grain width （qBGW）, and brown grain thickness （qBGT） explained 77.67, 36.24, 89.63, and 39.41% of total phenotypic variation, respectively. The large grain rice variety BL129 possesses the beneficial alleles of GW2 and qSW5/ GW5, which have been known to control grain width and weight, indicating that the accumulation of the beneficial alleles causes large grain shape in BL129. Further results reveal that the rare gw2 allele from BL129 increases grain width, thickness and weight of the elite indica variety Huazhan, which is used as a parental line in hybrid rice breeding. Thus, our findings will help breeders to carry out molecular design breeding on rice grain size and shape.

关键词： rice quantitative trait grain size GW2 GW5

PRCA： A highly efficient computing architecture

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engineering Sciences 2014年第4期12卷 38-47页

作者： Luo Xingguo national Digital Switching System engineering & Technological R&D center Zhengzhou 450002 China

Applications can only reach 8 %~15 % of utilization on modern computer systems. There are many obstacles to improving system efficiency. The key root is the conflict between the fixed general computer architecture and the variable requirements of applications. Proactive reconfigurable computing architecture(PRCA) is proposed to improve computing efficiency. PRCA dynamically constructs an efficient computing architecture for a specific application via reconfigurable technology by perceiving requirements,workload and utilization of computing resources. Proactive decision support system(PDSS),hybrid reconfigurable computing array(HRCA) and reconfigurable interconnect(RIC) are intensively researched as the key technologies. The principles of PRCA have been verified with four applications on a test bed. It is shown that PRCA is feasible and highly efficient.

关键词： PRCA efficient computing challenges

The Feasibility Analysis of Decrease the Reverse Reaction Rate in the Carbothermic Reduction of Magnesia in a Vacuum

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The Feasibility Analysis of Decrease the Reverse Reaction Ra...

Mechanical engineering and Material Science—2012 International Conference on Mechanical engineering and Material Science(MEMS 2012)

In the present work,the behavior of un-coagulable CO was experimentally investigated during the condensation process of carbothermic reduction of magnesia at condensing zone temperatures ranging from 923 K to 1223 *** powders and magnesium lump condensates were produced under different conditions and characterized by scanning electron microscopy and energy-dispersive X-ray *** reverse reaction products C and MgO were formed following the process of magnesium vapor condensation and we just found the nearer the temperature of the condensation zone approached the liquid transition temperature,the lower the rate of the reverse reaction between CO and magnesium ***,decreases in the rate of the reverse reaction of magnesium were possible by controlling the condensation temperature in experiments.

关键词： Magnesium Vapor Vacuum Reverse reaction Carbothermic reduction.

The New Architecture with Time-Spatial Consistency for 5G Networks

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china Communications 2016年第1期13卷 68-79页

作者： SUN Zhennian XU Xu CHAI Xiaomeng ZHANG Tianyu TIAN Lin ZHANG Zhongshan Beijing engineering and Technology center for Convergence Networks and Ubiquitous Services University of Science and Technology Beijing (USTB) Beijing China 100083 NEC Laboratories china (NLC) Beijing 100084 China Institute of Computing Technology Chinese Academy of Sciences Beijing China 100190

While operators have started deploying fourth generation(4G) wireless communication systems,which could provide up to1 Gbps downlink peak data rate,the improved system capacity is still insufficient to meet the drastically increasing demand of mobile users over the next *** main causes of the above-mentioned phenomenon include the following two aspects:1) the growth rate of the network capacity is far below that of user's demand,and 2) the relatively deterministic wireless access network(WAN) architecture in the existing systems cannot accommodate the prominent increase of mobile traffic with space-time domain *** order to address the above-mentioned challenges,we investigate the time-spatial consistency architecture for the future WAN,whilst emphasizing the critical roles of some spectral-efficient techniques such as Massive multiple-input multiple-output(MIMO),full-duplex(FD)operation and heterogeneous networks(HetNets).Furthermore,the energy efficiency(EE)of the HetNets under the proposed architecture is also evaluated,showing that the proposed user-selected uplink power control algorithm outperforms the traditional stochastic-scheduling strategy in terms of both capacity and EE in a two-tier *** other critical issues,including the tidal effect,the temporal failure owing to the instantaneously increased traffic,and the network wide load-balancing problem,etc.,are also anticipated to be addressed in the proposed architecture.(Abstract)

关键词： wireless access network spectral efficiency energy efficiency super base station heterogeneous network

基于IITAE评价指标的交流伺服系统参数自动整定研究

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微电机 2010年第2期43卷 70-73页

作者：陈鹏展唐小琦任清荣华中科技大学国家数控系统工程技术研究中心武汉430074

根据交流伺服系统的控制性能评价需求,在综合比较了ISE,IAE,ITAE等性能评价指标的特性后,设计了一种IITAE(改进的ITAE指标)作为伺服系统的控制性能评价指标,利用该指标设计了基于坐标轮换算法的伺服控制参数自整定模型,并进行了实时仿... 详细信息

根据交流伺服系统的控制性能评价需求,在综合比较了ISE,IAE,ITAE等性能评价指标的特性后,设计了一种IITAE(改进的ITAE指标)作为伺服系统的控制性能评价指标,利用该指标设计了基于坐标轮换算法的伺服控制参数自整定模型,并进行了实时仿真研究,结果表明:IITAE性能评价指标具有较好的适用性,坐标轮换算法是获取伺服系统优化控制参数的高效途径。

关键词：伺服性能评价指标坐标轮换算法自整定

OsVPE1,a vacuolar processing enzyme,is required for efficient processing of glutelins in rice

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OsVPE1,a vacuolar processing enzyme,is required for efficien...

2008中国作物学会学术年会

作者： Yihua Wang~1 Susong Zhu~2 Shijia Liu~1 Ling Jiang~1 Liangming Chen~1 Yulong Ren~1 Xiaohua Han~1 Feng Liu~1 Sulan Ji~1 Xi Liu~1 Jianmin Wan~(1,2,*) (1 national Key Laboratory for Crop Genetics and Germplasm Enhancement,Jiangsu Plant Gene engineering research center,nanjing Agricultural university,nanjing 210095,china,and 2 national Key Facility for Crop Gene resources and Genetic Improvement,Institute of Crop Science,Chinese Academy of Agricultural Sciences,Beijing 100081,china)

Rice(Oryza sativa L.)accumulates prolamines and glutelins as major storage *** latter is synthesized on rough endoplasmic reticulum(rER)as a 57kD precursor and then sorted into protein storage vacuoles(PSVs),where it is processed into acidic and basic *** report here a novel rice glutelin mutant,W379,which accumulates higher levels of the 57kD glutelin *** analysis revealed that the phenotype of W379 is controlled by a single recessive nuclear *** a map-based cloning strategy,we identified the corresponding gene of the W379 mutant,OsVPE1,a homoiog of the Arabidopsisβ***1 encodes a polypeptide of 497 amino *** sequence analysis revealed a mis-sense alteration in the mutant W379,resulting in an amino acid substitution of Cys269 to

关键词：

Randomized Algorithms for Optimal Robust Performance Controller Design

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Randomized Algorithms for Optimal Robust Performance Control...

第十九届中国控制会议

作者： Chunlei Song Long Wang Lin Huang center for Systems and Control Department of Mechanics and engineering Science Peking university, Beijing, 100871, P.R.china

＜正＞In this paper efficient randomized algorithms are constructed to solve optimal robust performance controller design problems. The randomized algorithms here are based on a property from statistical learning theory known as uniform convergence of empirical means （UCEM）. It is argued that in order to assess the performance of a controller as the plant varies over a prespecified family, it is better to use the average performance of the controller as the objective function to be minimized, rather than its worst-case performance. The approach is illustrated to be efficient through an example.

关键词： randomized algorithms statistical learning theory optimal robust performance controller design