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Memristive crossbar array with applications in image processing

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Science china(Information Sciences) 2012年第2期55卷 461-472页

作者： HU XiaoFang,DUAN ShuKai,WANG LiDan & LIAO XiaoFeng school of Electronics and Information Engineering,southwest University,{2.,china 1. school of Electronics and Information Engineering Southwest University Chongqing 400715 China

A memristor is a kind of nonlinear resistor with memory *** resistance changes with the amount of charge or flux passing through *** the fourth fundamental circuit element,it has huge potential applications in many fields,and has been expected to drive a revolution in circuit *** numerical simulations and circuitry modeling,the basic theory and properties of memristors are analyzed,and a memristor-based crossbar array is then *** array can realize storage and output for binary,grayscale and color images.A series of computer simulations demonstrates the effectiveness of the proposed *** to the advantage of the memristive crossbar array in parallel information processing,the proposed method is expected to be used in high-speed image processing.

关键词： memristor crossbar array modeling and simulation image storage image output

Homochiral expression of proteins:a discussion on the natural chirality related to the origin of life

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Science china Chemistry 2010年第4期53卷 792-796页

作者： HU PingPing1,2. PENG Li2. ZHEN ShuJun3, CHEN LiQiang2. XIAO SaiJin1 & HUANG ChengZhi1,3 1Key Laboratory on Luminescence Real-Time Analysis, Ministry of Education College of Chemistry and Chemical Engineering, southwest University, chongqing 400715, {2. 2.ollege of Life Science, southwest University, chongqing 400715, {2. 3College of Pharmaceutical Sciences, southwest University, chongqing 400715, {2. 1. Key Laboratory on Luminescence Real-Time Analysis Ministry of Education Southwest University Chongqing 400715 China2. College of Life Science Southwest University Chongqing 400715 China4. College of Chemistry and Chemical Engineering Southwest University Chongqing 400715 China3. College of Pharmaceutical Sciences Southwest University Chongqing 400715 China

Homochirality in life has always been a driving force in scientific research and natural exploration. It has not been satisfactorily explained, and systematic investigations are necessary. This paper reported a homochiral expression of proteins dependent on the stirring direction of growing media. By controlling the stirring direction clockwise (CW) and anticlockwise (ACW) of the culture medium, proteins with distinct secondary structures were obtained, and D-amino acid may be included in the protein cultured with the stirring direction of ACW. Considering the effect of force fields, which might affect the process of folding and refolding of cellular protein in this report, the control of force fields might be a good way to prepare asymmetric drugs, and the rotational direction of the earth is possibly related to the chirality in primitive life molecules.

关键词： homochirality chiral expression prion protein fluorescence

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A method for solving Nash equilibria of games based on public announcement logic

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Science china(Information Sciences) 2010年第7期53卷 1358-1368页

作者： CUI JianYing & TANG XiaoJia Institute of Logic and Intelligence, southwest University, chongqing 400715, {2. 1. Institute of Logic and Intelligence Southwest University Chongqing 400715 China

Describing the interactional behavior of rational agents and seeking equilibria are two main domains of game theory. The epistemic foundation of the above two domains is based on the assumption that all players are rational. However, game theory itself cannot precisely model the higher-order information changes of mutual knowledge among players, so in the current studies of game theory the interpretations of rationality are vague. In this paper, a concept of the rationality is redefined through incorporating an epistemic ingredient. Then a method is proposed to solve and refine Nash equilibria which is grounded on public announcement logic, and it is proved that the iterated announcement of this rationality assertion characterizes the iterated admissibility algorithm in game theory, which offers a dynamic epistemic foundation for this algorithm. Finally, an implementation of this method, based on the extended DEMO, is shown to be correct.

关键词： iterated admissibility algorithm rationality public announce logic demo

Superconductivity of small metal grains

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Science china(Physics,Mechanics & Astronomy) 2005年第4期48卷 431-441页

作者： ZHENG Renrong1 CHEN Zhiqian2.& ZHU Shunquan1,3 1. Department of Physics, Shanghai Normal University, Shanghai 2.02.4, china 2. Department of Physics, southwest Normal University, {2., china 3. Department of Computer and Electric Technology, Shanghai Business school, Shanghai 2.1400, china 1. Department of Physics Shanghai Normal University 200234 Shanghai China 2. Department of Physics Southwest Normal University 400715 Chongqing China 3. Department of Computer and Electric Technology Shanghai Business School 201400 Shanghai China

The formulas of the energy gap and superconducting critical temperature appropriate for systems with both odd and even number of electrons are derived; the bases of the derivations are BCS theory and energy level statistics. Numerical results qualitatively agree with the experimental phenomena. i.e., the superconductivity of small metallic grains will first enhance then decrease to zero when the grain are getting smaller and smaller. The calculations indicate that the above phenomena happen in the metallic grains belonging to Gaussian Orthogonal Ensemble (GOE) and Gaussian Unitary ensemble (GUE) with zero spin; The superconductivity of small metallic grains in Gaussian Symplectic Ensemble (GSE) will monotonically decrease to zero with the decreasing of the grain size. The analyses suggest that the superconductivity enhancements come from pairing and the balance of the strengths between spin-orbital coupling and external magnetic field. In order to take the latter into account, it is necessary to include the level statistics given by Random Matrix Theory (RMT) in describing small metallic grains.

关键词： size effect, superconductivity enhancements, small metallic grains.

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The Willmore functional and the containment problem in R^4

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Science china Mathematics 2007年第3期50卷 325-333页

作者： Jia-zu ZHOU school of Mathematics and Statistics, southwest University, {2., china Department of Mathematics, Polytechnic University, Brooklyn, NY 112.1, USA school of Mathematics and Statistics Southwest University Chongqing 400715China

Let∑be a convex hypersurface in the Euclidean space R4 with mean curvature H. We obtain a geometric lower bound for the Willmore functional∫∑H2.σ. This bound is an invariant involving the area of∑, the volume and Minkowski quermassintegrals of the convex body that∑bounds. We also obtain a sufficient condition for a convex body to contain another in the Euclidean space R4.

关键词： mean curvature scalar curvature kinematic formula Minkowski quermassintegrals convex body convex hypersurface 52.2. 53C65 51C16

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Study of immunological activity of coarse polysaccharide of Agaricus blazei murrill

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西南师范大学学报(自然科学版) 1999年第5期24卷 594-600页

作者： Tang Wei 1,Wang Qijun 2.1 College of Physical Education,southwest china Normal University,{2. 2.southwest Agricultural University,chongqing 400716 西南师范大学体育学院重庆西南农业大学重庆

The coarse polysaccharide extracted from the mycelium of Agaricus blazei Murrill was served as our experimental materials. The results exhibited that it can significantly increase spleen index and phagocytic rate of macrophage and strengthen non specific immunological level of organism. It can obviously raise rosette formation percentage of active T lymphocytes(Ea%) to promote the cellular immunological level of organism. Besides, it can noticeably increase the content of haemolysin that is a circulating antibody to enhance the immunological level of body fluid. Therefore, coarse polysaccharide of A. blazei Murrill has wide applications in health care and medicine and it is a good immune strengthening agent.

关键词： Agaricus blazei Murrill polysaccharide immunological activity \

Path Selection for Increasing Peasants’ Income through the Practice of Narrowing "The Three Gaps" in chongqing

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Path Selection for Increasing Peasants’ Income through the ...

双向凝视：快门与心灵的旅程意大利摄影师埃琳娜·吉沃尼重庆南开两江中学艺术访问之旅

第十一届全国经济管理院校工业技术学研究会

作者： Lei NIU 1,Qing-hua HUANG 2.Jian-hui LIU 3,Yong-xiu SUN 4 1 College of Economics & Management,southwest University,chongqing,{2.,china 2.College of Economics & Management,southwest University,chongqing,{2.,china 3 College of Economics & Management,southwest University,chongqing,{2.,china

"The three gaps",differences between Urban-rural areas,the rich and poor and among regions,has become a major problem which plagued the Chinese economic,social and cultural *** a municipality,chongqing first to proposes a series of policies aiming at increasing peasants’ incomes to narrow the "three gaps",which can strengthen agricultural policy to benefit peasants,reform agriculture,promote farmers and improve the situation in rural *** measurements have played a positive and very important role in promoting the *** paper is focus on strengthening agricultural policy to enrich peasants,narrowing "The three gaps" in chongqing,the perspective of improving the path,explaining the policy background and significance of narrowing "the three gaps".In addition,this paper research in how to narrow "the three gaps",strengthen agricultural policy to enrich peasants and get the means and experience in reaching rich in common.

关键词： chongqing three gaps agriculture farmer and rural area

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重庆与世界 2024年第6期 62-63页

作者： chongqing Nankai Liangjiang Secondary school 重庆南开两江中学

3月12.至13日，意大利摄影师埃琳娜·吉沃尼访问重庆南开两江中学，为她的摄影全球项目“在寻常中发现非凡”取材，并开启一段文化艺术探索和交流之旅。两天时间里，埃琳娜通过互动研讨会、讲座及实践摄影课程，分享了她对“实践梦想...

3月12.至13日，意大利摄影师埃琳娜·吉沃尼访问重庆南开两江中学，为她的摄影全球项目“在寻常中发现非凡”取材，并开启一段文化艺术探索和交流之旅。两天时间里，埃琳娜通过互动研讨会、讲座及实践摄影课程，分享了她对“实践梦想”的独特见解。拥有全球视野、多元教育理念和美丽校园的重庆南开两江中学，为埃琳娜的创作提供了丰富的灵感。她以镜头为笔，以照片为语，讲述关于梦想、艺术和人生的美丽故事，也让南开两江中学的师生领略到了摄影艺术的魅力。

关键词：

A Distributed Computing Algorithm for Electricity Carbon Emission Flow and Carbon Emission Intensity

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Protection and Control of Modern Power Systems 2024年第2期9卷 138-146页

作者： Xingping Wu Wei Yang Ning Zhang Chunlei Zhou Jinwei Song chongqing Kang Big Data Center of china Network Chinese Society of Electrical Engineering State Network Big Data Center Department of Electrical Engineering Tsinghua UniversityBeijingChina 不详 Big Data Center State Grid Corporation of ChinaBeijing 100052China Department of Electrical Engi-neering Tsinghua UniversityBeijingChina

The calculation of the indirect carbon emis-sion is essential for power system policy making,carbon market development,and power grid *** em-bedded carbon emissions of the electricity system are commonly calculated by carbon emission flow ***,the calculation procedure is time-consuming,especially for a country with 500-1000 thousand nodes,making it challenging to obtain nationwide carbon emis-sions intensity ***,the calculation procedure requires to gather all the grid data with high classified levels from different power grid companies,which can prevent data sharing and cooperation among different *** paper proposes a distributed computing algorithm for indirect carbon emission that can reduce the time consumption and provide privacy *** core idea is to utilize the sparsity of the nodes’flow matrix of the nationwide grid to partition the computing procedure into parallel sub-procedures exe-cuted in multiple *** flow and structure data of the regional grid are transformed irreversibly for pri-vacy protection,when transmitted between terminals.A 1-master-and-N-slave layout is adopted to verify the *** algorithm is suitable for large grid compa-nies with headquarter and branches in provinces,such as the State Grid Corporation of china.

关键词： Carbon emission flow cooperative computing carbon emission intensity matrix block par-tition power flow tracing parallel computing privacy protection