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unimem: Runtime Data Management on Non-Volatile Memory-BasedHeterogeneous Main Memory for High Performance Computing

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Journal of Computer Science & Technology 2021年第1期36卷 90-109页

作者： kai Wu Dong Li Department of Electrical Engineering and Computer Science University of California MercedMerced 95343U.S.A.

Non-volatile memory(NVM)provides a scalable and power-efficient solution to replace dynamic random access memory(DRAM)as main ***,because of the relatively high latency and low bandwidth of NVM,NVM is often paired with DRAM to build a heterogeneous memory system(HMS).As a result,data objects of the application must be carefully placed to NVM and DRAM for the best *** this paper,we introduce a lightweight runtime solution that automatically and transparently manages data placement on HMS without the requirement of hardware modifications and disruptive change to *** online profiling and performance models,the runtime solution characterizes memory access patterns associated with data objects,and minimizes unnecessary data *** runtime solution effectively bridges the performance gap between NVM and *** demonstrate that using NVM to replace the majority of DRAM can be a feasible solution for future HPC systems with the assistance of a software-based data management.

关键词： data management non-volatile memory runtime system

Q-Learning-Based Target Selection for Bearings-Only Autonomous Navigation

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Journal of Systems Science & Complexity 2021年第4期34卷 1401-1425页

作者： XIONG kai WEI Chunling Science and Technology on Space Intelligent Control Laboratory Beijing Institute of Control EngineeringBeijing 100094China

This paper presents a Q-learning-based target selection algorithm for spacecraft autonomous navigation using bearing observations of known visible *** the considered navigation system,the position and velocity of the spacecraft are estimated using an extended Kalman filter(EKF)with the measurements of inter-satellite line-of-sight(LOS)vectors obtained via an onboard star *** paper focuses on the selection of the appropriate target at each observation period for the star camera adaptively,such that the performance of the EKF is *** derive an effective algorithm,a Q-function is designed to select a proper observation region,while a u-function is introduced to rank the targets in the selected *** the Q-function and the u-function are constructed based on the sequence of innovations obtained from the *** efficiency of the Q-learning-based target selection algorithm is illustrated via numerical simulations,which show that the presented algorithm outperforms the traditional target selection strategy based on a Cramer-Rao bound(CRB)in the case that the prior knowledge about the target location is inaccurate.

关键词： Bearings-only autonomous navigation convergence analysis extended Kalman filtering Q-Learning target selection

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资本主义社会片面追求效率与休闲的异化

消费经济 2005年第6期21卷 68-71页

作者：周觉北京信息科技大学经贸系北京100085

追求劳动效率推动了资本主义社会由追求绝对剩余价值向相对剩余价值转变,马克思指出这种转变给劳动者所带来的后果是劳动强度的增加与劳动的异化。劳动的异化会导致休闲的异化,表现为休闲的“物化”与“工作化”;劳动生产效率提高要求... 详细信息

追求劳动效率推动了资本主义社会由追求绝对剩余价值向相对剩余价值转变,马克思指出这种转变给劳动者所带来的后果是劳动强度的增加与劳动的异化。劳动的异化会导致休闲的异化,表现为休闲的“物化”与“工作化”;劳动生产效率提高要求休闲效率也相应提高,追求休闲效率在加剧时间稀缺性的同时导致休闲异化,表现为自由时间之不可能。

关键词：效率休闲异化

A ROOT-based detector test system

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Nuclear Science and Techniques 2021年第10期32卷 50-58页

作者： Huang-kai Wu Chen Li Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China university of Chinese Academy of Sciences Beijing 100049China Shanghai Synchrotron Radiation Facilitiy Zhangjiang LaboratoryShanghai Advanced Research InstituteShanghai 201204China

Most detectors for nuclear physics experiments are detector arrays composed of numerous *** each detector unit is a major part of the research work on detector *** save time and simplify the research process,a ROOT-based detector test system was designed for detector unit *** test system is a general pur-pose and expandable software system that can support most of the hardware devices in the *** can easily build a complete detector test system using the required hardware *** software is based on the ROOT framework and is operated on the Linux *** software of the test system consists of four parts:the controller,data acquisition(DAQ),high-voltage power supply,and online monitoring and *** addition,a user-friendly graphical user interface(GuI)was designed for user ***,the online analysis func-tion of the software can implement automatic peak searching and spectrum fitting for different radioactive sources,and the results under different conditions can be shown *** completion of the test system could greatly simplify the development process of the detector.

关键词： Detector test Data analysis ROOT

Deletion of a Stay-Green Gene Associates with Adaptive Selection in Brassica napus

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Molecular Plant 2016年第12期9卷 1559-1569页

作者： Lunwen Qian kai Voss-Fels Yixin Cui Habib u. Jan Birgit Samans Christian Obermeier Wei Qian Rod J. Snowdon Department of Plant Breeding IFZ Research Centre for Biosystems Land Use and Nutrition Justus Liebig University Heinrich-Buff-Ring 26-32 35392 Giessen Germany College of Agronomy and Biotechnology Southwest University 400716 Chongqing China

Chlorophyll levels provide important imrormation about plant growth and physiological plasticity in response to changing environments. The stay-green gene NON-YELLOWING 1 （NYE1） is believed to regu-late chlorophyll degradation during senescence, concomitantly affecting the disassembly of the light- harvesting complex and hence indirectly influencing photosynthesis. We identified Brassica napus acces- sions carrying an NYE1 deletion associated with increased chlorophyll content, and with upregulated expression of light-harvesting complex and photosynthetic reaction center （PSI and PSII） genes. Compar- ative analysis of the seed oil content of accessions with related genetic backgrounds revealed that the B. napus NYE1 gene deletion （bnnyel） affected oil accumulation, and linkage disequilibrium signatures suggested that the locus has been subject to artificial selection by breeding in oilseed B. napus forms. Comparative analysis of haplotype diversity groups （haplogroups） between three different ecotypes of the allopolyploid B. napus and its A-subgenome diploid progenitor, Brassica rapa, indicated that introgres- sion of the bnnyel deletion from Asian B. rapa into winter-type B. napus may have simultaneously improved its adaptation to cooler environments experienced by autumn-sown rapeseed.

关键词： rapeseed breeding chlorophyll photosynthesis presence-absence variation PAV

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驾驶员情绪状态研究

心理科学 2003年第3期26卷 438-440页

作者：朱国锋何存道浙江交通职业技术学院杭州311112 华东师范大学心理系上海200062

采用驾驶员情绪状态量表(DPOMS),对265名客车驾驶员的情绪状态进行了问卷调查。结果表明:(1)年龄对驾驶员的疲劳状态有显著影响,对其余各种情绪状态没有显著影响;(2)女驾驶员的紧张情绪显著高于男驾驶员,积极情绪(精力)显著于低于男驾驶... 详细信息

采用驾驶员情绪状态量表(DPOMS),对265名客车驾驶员的情绪状态进行了问卷调查。结果表明:(1)年龄对驾驶员的疲劳状态有显著影响,对其余各种情绪状态没有显著影响;(2)女驾驶员的紧张情绪显著高于男驾驶员,积极情绪(精力)显著于低于男驾驶员;(3)出租汽车驾驶员的愤怒、疲劳、紧张等消极情绪显著高于公交大客车驾驶员,积极情绪(精力)显著低于公交大客车驾驶员;(4)事故组驾驶员的愤怒、疲劳、紧张、慌乱等消极情绪显著高于安全组驾驶员,积极情绪(精力)显著低于安全组驾驶员。

关键词：女性驾驶员情绪状态 DPOMS 交通事故疲劳状态男性积极情绪出租汽车愤怒情绪疲劳情绪紧张情绪公交大客车消极情绪慌乱情绪

Asymptotically Good Additive Cyclic Codes

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Chinese Journal of Electronics 2020年第5期29卷 859-864页

作者： YAO Ting zhu Shixin kai Xiaoshan School of Mathematics Hefei University of Technology

ZPZPs-additive cyclic codes have been proved to be asymptotically good by Yao and *** binary Hamming scheme,we introduce a type of Z2（Z2+uZ2）-additive cyclic codes generated by pairs of *** R be the chain ring Z2+uZ2,where u2=*** asymptotic rates and relative distances of this class of codes are presented by establishing the relationship between the random Z2-R-additive cyclic code and random binary quasi-cyclic code of index *** show that Z2-Radditive cyclic codes are asymptotically good.

关键词： Additive cyclic codes Random codes Relative minimum distance Asymptotically good codes

A fully nonlinear approach for efficient ship-wave simulation

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Journal of Hydrodynamics 2023年第6期35卷 1027-1040页

作者： kai-yuan Shi Ren-chuan zhu School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China

This paper presents an efficient time-domain method for simulating nonlinear ship *** proposed method,implemented in an earth-fixed coordinate system,integrates a compact boundary element domain within a high-order spectral layer,enabling accurate modeling of both near-field and far-field ship *** overset mesh method and an attention mechanism are employed to track the moving *** effectiveness of the method is validated through simulations of Wigley and Series 60 ships sailing at various *** numerical results,including the nonlinear wave run-up at the ship bow,surface pressure distribution on the hull,and the ship resistance,agree well with experimental data and published numerical results,confirming that the method is capable of accurately simulating the nonlinear ship waves.

关键词： Fully nonlinear ship wake potential flow spectral coupled method wave-making resistance

A FAMILY OF CONSTACYCLIC CODES OVER F_2+μF_2+ vF_2+ uvF_2

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Journal of Systems Science & Complexity 2012年第5期25卷 1032-1040页

作者： Xiaoshan kai Shixin zhu Liqi WANG School of Mathematics Hefei University of Technology National Mobile Communications Research Laboratory Southeast University

This paper studies （1 ＋ u）-constacyelic codes over the ring F2 ＋ uF2 ＋ vF,2 ＋ uvF2. It is proved that the image of a （1 ＋ u）-constacyclic code of length n over F2 ＋ uF2 ＋ vF2 ＋uvF2 under a Gray map is a distance invariant binary quasi-cyclic code of index 2 and length 4n. A set of generators of such constacyclic codes for an arbitrary length is determined, Some optimal binary codes are obtained directly from （1 ＋ u）-constacyclic codes over F2 ＋ uF2 ＋ vF2 ＋ uvF2.

关键词： Constacyclic code generator polynomial Gray distance Gray map.