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Multi-policy threshold signature with distinguished signing authorities

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The Journal of China Universities of Posts and Telecommunications 2011年第1期18卷 113-120页

作者： WANG Feng zhou You-sheng gu Li-ze ZHENG Shi-hui YANG yi-xian Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China Key Laboratory of Network and Information Attack and Defence Technology Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

Threshold signature plays an important role to distribute the power of a single authority in modem electronic society. In order to add functions and improve efficiency of threshold signatures, a multi-policy threshold signature scheme with distinguished signing authorities is proposed. In the scheme two groups can sign and verify each other, so the scheme is two-way signing and verifying. Moreover, the threshold values of the two groups can change with the security classification of the signing document, every discretionary signatory only signs a small part of the document instead of the whole one, so the bandwidth of data transmission for group signature construction can be reduced and the size of group signature is equivalent to that of any individual signature.

关键词： threshold signature multi-policy group verified distinguished signing authorities

Nanopore sensing system for high-throughput single molecular analysis

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Science China Chemistry 2018年第12期61卷 1483-1485页

作者： Zhen gu yi-Lun ying yi-Tao Long Key Laboratory for Advanced Materials & School of Chemistry and Molecular EngineeringEast China University of Science and Technology Shanghai 200237China

Nanopore technique enables a sensitive, label free, low cost and high throughput method for single-molecule analysis[1–4]. Usually, the nanopore is fabricated on an insulating membrane with electrolyte solution in two sides, which can act as the only pathway for the ionic flow. When a single molecule enters the pore under the applied biased potential, it will temporarily block the ionic current flow through the nanopore. By analyzing the amplitude, duration, shape and frequency spectra of ionic current modulations, nanopore detection could provide the characteristics of the analytes.

关键词： Nanopore sensing system high-throughput single molecular analysis

Impacts of household living consumption on energy use and carbon emissions in China based on the input–output model

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Advances in Climate Change Research 2020年第2期11卷 118-130页

作者： zhou Xiao-Yu gu A-Lun Institute of Energy Environment and EconomyTsinghua UniversityBeijing100084China

China must urgently accelerate its decrease of energy use,optimize its energy structure,reduce CO2 emissions,and promote the early realization of an ecological ***,meeting the growing consumer demand is one of the reasons for the increase in energy *** study investigates the impacts of household consumption on energy use and CO2 emissions from the perspective of the lifestyle of Chinese *** the basis of the input–output model of 30 provinces,we analyze the current situation of energy use and CO2 emissions in different regions(spatial scale)with economic development and income improvement(time scale),investigate the pulling effect of household consumption in different provinces on industrial sectors,examine the influencing factors of indirect CO2 emissions from food,clothing,housing,and transportation in key regions,and explore the policy implications of the transition to a low-carbon lifestyle in different *** show that the fuel structure of Chinese residents should be optimized *** household energy consumption and total CO2 emissions considerably *** 2012,total household energy consumption accounted for nearly 30%of total energy consumption,while indirect CO2 emissions accounted for 66.3%of total household *** regard to the structures of indirect household energy consumption,the housing sector accounted for the largest proportion,reaching 23.4%in indirect energy consumption in *** pulling effect of the housing sector on industrial sectors was also *** decomposition analysis showed that the rapid increase in indirect household CO2 emissions was primarily due to the increase in per capita living *** consumption structures in different provinces produced various impacts,and the energy intensity effect was identified as an important factor for reducing indirect household CO2 emissions.

关键词： Household living consumption CO2 emissions Input–output model Logarithmic mean divisia index(LMDI)decomposition Regional differences

GdCl₃ abates hepatic ischemia-reperfusion injury by inhibiting apoptosis in rats

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Hepatobiliary & Pancreatic Diseases International 2009年第5期8卷 518-523页

作者： Jian-yi Li Xi gu Wen-Hai Zhang Shi Jia Yong zhou Department of General Surgery Shengjing Hospital China Medical University Shenyang 110004 China.

BACKGROUND:Gadolinium chloride(GdCl3)is a specific inhibitor of Kupffer cells(KCs),which are important promoters of various liver *** is therefore of interest to explore the role of KCs in liver ischemia-reperfusion injury and their relations with apoptosis caused by ischemia-reperfusion injury. METHODS:One hundred male Wistar rats(190-210 g, 6-7 weeks old)were divided into two groups at random, GdCl3 group and control *** were collected at 0.5,1,6,12,and 24 hours from each group after *** alanine aminotransferase(ALT)and aspartate aminotransferase(AST)were measured by an automatic biochemical ***-αin serum was measured by enzyme-linked immunosorbent assay(ELISA). Malondialdehyde(MDA)in the liver mitochondria was measured by a colorimetric *** changes in the liver and immunohistochemical staining for caspase-3 were observed under an optical *** ratio of apoptotic cells was measured by TdT-mediated dUTP nick-end labeling(TUNEL),and ultrastructural features of apoptosis were observed with a transmission electron microscope(TEM). RESULTS:The levels of ALT in the GdCl3 group were lower than those in the control group after reperfusion for 0.5, 1,6 and 12 hours(P<0.05);and the levels of AST in the GdCl3 group were lower than those in the control group after reperfusion for 6 and 12 hours(P<0.05).The levels of TNF-αin the GdCl 3 group were lower than those in the control group after reperfusion for each time(P<0.05). The concentrations of MDA after reperfusion in the GdCl3 group were lower than those in the control group after reperfusion for 6,12 and 24 hours(P<0.05).After reperfusion for 0.5,1,6 and 12 hours,the integral optical density(IOD)of caspase-3-positive cells was lower in theGdCl3 group than in the control group(P<0.05).After reperfusion for 1,6,and 12 hours,the IOD of cells stained by TUNEL in the GdCl3 group was lower than that in the control group(P<0.05). CONCLUSIONS:GdCl3

关键词： gadolinium chloride Kupffer cell ischemia-reperfusion injury caspase-3 apoptosis

Development and characterization of interspecific hybrids between Oryza sativa and O. latifolia by in situ hybridization

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Chinese Science Bulletin 2008年第19期53卷 2973-2980页

作者： yi ChuanDeng TANG ShuZhu zhou Yong LIANG guoHua GONG ZhiYun gu MingHong Jiangsu Province Key Laboraty of Crop Genetics and Physiology/Key Laboraty of Plant Functional Genomics of Ministry of Education Yangzhou University Yangzhou 225009 China

Oryza sativa and O. latifolia belong to the AA and CCDD genomes of Oryza, respectively. In this study, interspecific hybrids of these species were obtained using the embryo rescue technique. Hybrid panicle traits, such as long awns, small grain, exoteric large purple stigma, grain shattering and dispersed panicles, resemble that of the paternal parent, O. latifolia, whereas there is obvious heterosis in such respects as plant height, tillering ability and vegetative vigor. Chromosome pairing and the genomic components of the hybrid were subsequently investigated using genomic in situ hybridization (GISH) and fluorescent in situ hybridization (FISH) analysis. Based on the mitotic metaphase chromosome numbers of the root tips investigated, the hybrid is a triploid with 36 chromosomes. The genomic constitution of the hybrid is ACD. In the meiotic metaphase I of the hybrid pollen mother cell, poor chro- mosome pairing was identified and most of the chromosomes were univalent, which resulted in com- plete male sterility in the hybrid.

关键词：漂白亚麻纤维卷胚芽种间杂交技术

A Class of Large Solutions to the 3D Incompressible MHD and Euler Equations with Damping

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Acta Mathematica Sinica,English Series 2018年第1期34卷 63-78页

作者： yi zhou yi ZHU School of Mathematical Sciences Fudan University

In this paper, we derive the global existence of smooth solutions of the 3D incompressible Euler equations with damping for a class of large initial data, whose Sobolev norms H8 can be arbitrarily large for any s ≥0. The approach is through studying the quantity representing the difference between the vortieity and velocity. And also, we construct a family of large solutions for MHD equations with damping.

关键词： Large solutions euler equations MHD equations damping

Source-Load Coordinated Optimal Scheduling Considering the High Energy Load of Electrofused Magnesium and Wind Power Uncertainty

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Energy Engineering 2024年第10期121卷 2777-2795页

作者： Juan Li Tingting Xu yi gu Chuang Liu guiping zhou guoliang Bian School of Electrical Engineering Northeast Electric Power UniversityJilin132013China Ministry of Science and Technology Communication State Grid Liaoning Electric Power Co.Ltd.Shenyang110000China

In fossil energy pollution is serious and the“double carbon”goal is being promoted,as a symbol of fresh energy in the electrical system,solar and wind power have an increasing installed capacity,only conventional units obviously can not solve the new energy as the main body of the scheduling *** enhance the systemscheduling ability,based on the participation of thermal power units,incorporate the high energy-carrying load of electro-melting magnesiuminto the regulation object,and consider the effects on the wind unpredictability of the ***,the operating characteristics of high energy load and wind power are analyzed,and the principle of the participation of electrofusedmagnesiumhigh energy-carrying loads in the elimination of obstructedwind power is ***,a two-layer optimization model is suggested,with the objective function being the largest amount of wind power consumed and the lowest possible cost of system *** the upper model,the high energy-carrying load regulates the blocked wind power,and in the lower model,the second-order cone approximation algorithm is used to solve the optimizationmodelwithwind power uncertainty,so that a two-layer optimizationmodel that takes into account the regulation of the high energy-carrying load of the electrofused magnesium and the uncertainty of the wind power is ***,the model is solved using gurobi,and the results of the simulation demonstrate that the suggested model may successfully lower wind abandonment,lower system operation costs,increase the accuracy of day-ahead scheduling,and lower the final product error of the thermal electricity unit.

关键词： High energy load of electrofused magnesium wind energy consumption thermal power unit wind power uncertainty two-layer optimization

Synthesis and properties of novel thermotropic liquid crystalline copoly(ester-imide)s

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Chinese Chemical Letters 2009年第12期20卷 1510-1513页

作者： guo Yao yi gu State Key Laboratory of Polymer Materials Engineering of China College of Polymer Science and Engineering Sichuan University Chengdu 610065 China

Four novel copoly（ester-imide）s based on 3,3′,4,4′-biphenyltetracarboxylic dianhydride, bis（trimellitic acid anhydride） phenyl ester and di-p-aminophenyl ester of dicarboxylic acids were synthesized via two-step method in order to investigate whether two imide mesogenic units with different conformation and polarity could control the formation of LC-phase. Polarizes light microscopy （PLM） and differential scanning calorimetry （DSC） have shown that three polymers formed the nematic phase with ＂thread schlieren texture＂ and a polymer formed the nematic phase with ＂Inversion walls texture＂.

关键词： Copoly(ester-imide) Inversion walls texture Mesogenic unit Thermotropic liquid crystalline

Grouping response method for equivalent static wind loads based on a modified LRC method

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Earthquake Engineering and Engineering Vibration 2012年第1期11卷 107-119页

作者： zhou Xuanyi gu Ming Li Gang State Key Laboratory of Disaster Reduction in Civil Engineering Tongji UniversityShanghai 200092China

Wind loading is one of the most important loads for controlling the design of large-span roof structures. Equivalent static wind loads, which can generally aim at determining a specific response, are widely used by structural designers. A method for equivalent static wind loads applicable to multi-responses is proposed in this paper. A modified load- response-correlation （LRC） method corresponding to a particular peak response is presented, and the similarity algorithm implemented for the group response is described. The main idea of the algorithm is that two responses can be put into one group if the value of one response is close to that of the other response, when the structure is subjected to equivalent static wind loads aiming at the other response. Based on the modified LRC, the grouping response method is put forward to construct equivalent static wind loading. This technique can simultaneously reproduce peak responses for some grouped responses. To verify its computational accuracy, the method is applied to an actual large-span roof structure. Calculation results show that when the similarity of responses in the same group is high, equivalent static wind loads with high accuracy and reasonable magnitude of equivalent static wind distribution can be achieved.

关键词： large-span roof equivalent static wind loads modified LRC method grouping response similarityalgorithm