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Blockchain-Based Trusted Electronic Records Preservation in Cloud Storage

Computers, Materials & Continua 2019年第1期58卷 135-151页

作者： Zhiliang Deng Yongjun Ren Yepeng Liu xiang yin Zixuan Shen Hye-Jin Kim School of Information and Control Nanjing University of Information Science&TechnologyNanjing210044China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing210044China Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science&TechnologyNanjing210044China School of Computer and Software Nanjing University of Information Science&TechnologyNanjing210044China College of Information Engineering Yangzhou UniversityYangzhou225127China Business Administration Research Institute Sungshin W.UniversitySeoulKorea

Cloud storage represents the trend of intensive,scale and specialization of information technology,which has changed the technical architecture and implementation method of electronic records ***,it will provide a convenient way to generate more advanced and efficient management of the electronic data ***,in cloud storage environment,it is difficult to guarantee the trustworthiness of electronic records,which results in a series of severe challenges to electronic records *** from the definition and specification of electronic records,this paper firstly analyzes the requirements of the trustworthiness in cloud storage during their long-term preservation according to the information security theory and subdivides the trustworthiness into the authenticity,integrity,usability,and reliability of electronic records in cloud ***,this paper proposes the technology framework of preservation for trusted electronic ***,the technology of blockchain,proofs of retrievability,the open archival information system model and erasure code are adopted to protect these four security attributes,to guarantee the credibility of the electronic record.

关键词： Trusted electronic record blockchain cloud storage

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Dyson–Maleev theory of an X X Z ferrimagnetic spin chain with single-ion anisotropy

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Chinese Physics B 2018年第12期27卷 466-470页

作者： yin-xiang Li-Jun Tian Bin Chen Yu-Ge Chen College of Sciences Shanghai UniversityShanghai 200444China Tin Ka-Ping College of Science University of Shanghai for Science and TechnologyShanghai 200093China

We use the mean-field approximation of Dyson–Maleev representation to study an XXZ Heisenberg ferrimagnetic spin chain with single-ion anisotropy. By solving the self-consistent equations with different anisotropies, λ and D respectively,the energy spectrums, internal energy, static susceptibility and specific heat are calculated. Especially, the quantum phase transition of the magnetization plateau induced by single-ion anisotropy D is obtained in the model of the ferrimagnetic spin chain by using Dyson–Maleev mean-field theory.

关键词： Dyson–Maleev mean-field theory XXZ anisotropy Single-ion anisotropy ferrimagnetic spin chain

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A new synthetic route to MgO–MgAl2O4–ZrO2 highly dispersed composite material through formation of Mg5Al2.4Zr1.7O12 metastable phase: synthesis and physical properties

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International Journal of Minerals,Metallurgy and Materials 2017年第3期24卷 332-341页

作者： Peng Jiang Guo-xiang yin Ming-wei Yan Jia-lin Sun Bin Li Yong Li School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Collaborative Innovation Center of Steel Technology University of Science and Technology Beijing Beijing 100083 China

Mg_5Al_(2.4)Zr_(1.7)O_(12) metastable phase was successfully synthesized from analytical-grade Mg O,α-Al_2O_3,MgAl_2O_4,and ZrO_2 under an N_2 *** sintering temperature was varied from 1650 to 1780°C,and the highest amount of Mg_5Al_(2.4)Zr_(1.7)O_(12) appeared in the composite material when the sintering temperature was 1760°*** to our research of the formation mechanism of Mg_5Al_(2.4)Zr_(1.7)O_(12),the formation and growth of MgAl_2O_4 dominated when the temperature was not higher than 1650°*** the temperature was higher than 1650°C,MgO and ZrO_2 tended to diffuse into MgAl_2O_4 and the Mg_5Al_(2.4)Zr_(1.7)O_(12) solid solution was *** the temperature reached 1760°C,the formation of Mg_5Al_(2.4)Zr_(1.7)O_(12) was *** effect of Mg Al_2O_4 spinel crystals was also studied,and their introduction into the composite material promoted the formation and growth of Mg_5Al_(2.4)Zr_(1.7)O_(12).A highly dispersed MgO–Mg Al_2O_4–ZrO_2 composite material was prepared through the decomposition of the Mg_5Al_(2.4)Zr_(1.7)O_(12) metastable *** as-prepared composite material showed improved overall physical properties because of the good dispersion of MgO,MgAl_2O_4,and ZrO_2 phases.

关键词： metastable phases formation mechanisms composite materials refractory materials synthesis physical properties

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Two new species of the genus Sinopodisma(Orthoptera:Acridoidea:Catantopidae:Podisminae) from China

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Zoological Systematics 2015年第3期40卷 349-354页

作者： xiang-Chu yin Yong-Chao Zhi Zhan yin College of Life Sciences Hebei University College of Plant Protection Shandong Agricultural University Northwest Plateau Institute of Biology Chinese Academy of Sciences

Two new species of the genus Sinopodisma Chang, 1940 from Guizhou, China are described in this paper. S. xiai sp. nov. is similar to S. keloggii （Chang, 1940）, but differs from the latter by the length of a segment in antennae 2.5 times width in the middle part, median keel ofpronotum distinct, cercus of male very wide at basal part, its maximum width 2.2 times width of middle part and ancorae of epiphallus oblique inward, lower margin straight. S. fanjingshana sp. nov. is similar to S. wulingshana Peng ＆ Fu, 1992, but differs from the latter in hind margin of pronotum with small hollow slightly in the middle, tegmina of male extending over the hind margin of first abdominal tergum distinctly, interspace of mesosternum narrow at the middle in male, ancorae of epiphallus lower than anterior projection, length of subgenital plate 1.5 times width in female. Type specimens are deposited in the Natural Museum of Hebei University, Baoding, Hebei, China.

关键词： Orthoptera Catantopidae Sinopodisma new species Guizhou.

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Development of the electric automatic steering system for agricultural vehicles

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 209-214页

作者： Guangshun An Chong Yu Juan Du xiang yin Youliang Ni Chengqian Jin School of Agricultural Engineering and Food Science Shandong University of TechnologyZibo 255000ShandongChina Nanjing Research Institute for Agricultural Mechanization of Ministry of Agriculture and Rural Affairs Nanjing 210014China

Automatic guidance of agricultural vehicles requires automatic execution of operation commands received from the navigation controller by using electronically controlled mechanisms for wheel steering,speed changing and work *** steering contributes as a prerequisite technique in automatic and semi-automatic agricultural *** research aimed to develop an electric automatic steering system that was compact in its structure and integrated into original steering mechanism in a simply and convenient way for aftermarket modification.A brushless motor and reducer assembly was utilized to provide an adequate steering torque instead of manual maneuver.A rapid assembling approach was proposed by passing the steering shaft through the hollow output shaft.A digital proportional-integral-differential(PID)algorithm was implemented to calculate the rotation speeds and directions by comparing the desired angle and the actual angle,which was implemented in a printed circuit board with a microcontroller unit(MCU)and interface *** unmanned wheeled tractor was applied as test platform to integrate the newly developed electric automatic steering *** were conducted to evaluate its performance in terms of stability and *** autonomous navigation system guided the tractor along target paths in the field by sending steering commands to the electric automatic steering *** results show that the steering angle error was less than 0.81°when desired steering angle was less than 10°.The lateral error difference was no more than 4.76 cm when repeating following the same target path,which indicated that the electric automatic steering system responded accurately and robustly to steering commands.

关键词： automatic steering automatic navigation agricultural vehicles

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p + ip-wave pairing symmetry at type-Ⅱ van Hove singularities

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Frontiers of Physics 2021年第5期16卷 183-189页

作者： yin-xiang Li Xiao-Tong Yang Tin Ka-Ping College of Science University of Shanghai for Science and Technology

Based on the random phase approximation calculation in two-orbital honeycomb lattice model, we investigate the pairing symmetry of Ni-based transition-metal trichalcogenides by electron doping access to type-Ⅱ van Hove singularities(vHs). We find that chiral even-parity d + id-wave(Eg) state is suppressed by odd-parity p + ip-wave(Eu) state when electron doping approaches the type-Ⅱ *** type-Ⅱ vHs peak in density of states(DOS) enables to strengthen the ferromagnetic fluctuation,which is responsible for triplet pairing. The competition between antiferromagnetic and ferromagnetic fluctuation results in pairing phase transition from singlet to triplet pairing. The Ni-based transitionmetal trichalcogenides provide a promising platform to unconventional superconductor emerging from electronic DOS.

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考虑信息隐藏策略的反恐应急设施选址模型

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系统工程理论与实践 2019年第5期39卷 1164-1177页

作者：项寅上海财经大学商学院上海200433

恐怖袭击常以人流密集地区的平民对象作为袭击目标,极易造成严重后果.通过反恐应急设施的合理布局可以缩短救援时间并降低袭击损失.在设施选址过程中,政府还可通过选址信息的隐藏来获取信息优势,误导恐怖分子的袭击策略并改善效用.首先... 详细信息

恐怖袭击常以人流密集地区的平民对象作为袭击目标,极易造成严重后果.通过反恐应急设施的合理布局可以缩短救援时间并降低袭击损失.在设施选址过程中,政府还可通过选址信息的隐藏来获取信息优势,误导恐怖分子的袭击策略并改善效用.首先,对考虑信息隐藏策略的反恐应急设施选址问题进行描述,结合随机选择模型刻画恐怖分子的有限理性行为,并将该问题构建为一类双层规划模型;随后,针对模型分别设计精确解算法和遗传算法,并结合喀什地区交通网络进行仿真分析.结果发现:恐怖分子理性程度已知时,相比于选址信息的完全公开,隐藏部分信息后更有利于降低政府损失,信息隐藏的最优数量与恐怖分子理性程度相关;恐怖分子理性程度未知时,在其理性程度被低估的情形下,选址信息隐藏策略更能发挥作用.

关键词：设施选址信息隐藏恐怖分子有限理性双层规划

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Rh-Cu alloy nano-dendrites with enhanced electrocatalytic ethanol oxidation activity

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Journal of Energy Chemistry 2023年第7期82卷 343-349,I0008页

作者： Di Liu Zhejiaji Zhu Jiani Li Li-Wei Chen Hui-Zi Huang Xiao-Ting Jing An-xiang yin Ministry of Education Key Laboratory of Cluster Science Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsAdvanced Technology Research Institute(Jinan)School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

The application of direct ethanol fuel cell(DEFC)has been bottlenecked by the sluggish ethanol oxidation reaction(EOR).Efficient electrocatalysts for the C-C bond cleavage are essential to promote EOR with high efficiency and C1 ***,we prepared Rh-Cu alloy nano-dendrites(RhCu NDs)with abundant surface steps through controlled co-reduction,which exhibited significantly enhanced activity and C1 selectivity(0.47 m A cm_((ECSA))^(-2),472.4 mA mg_(Rh)^(-1),and 38.9%)than Rh NDs(0.32 mA cm((ECSA))-2,322.1 mA mgRh-1,and 21.4%)and commercially available Rh/C(0.18 mA cm_((ECSA))^(-2),265.4 mA mg_(Rh)^(-1),and 14.9%).Theoretical calculations and CO-stripping experiments revealed that alloying with Cu could modulate the surface electronic structures of Rh to resist CO-poisoning while strengthening ethanol *** situ Fourier transform infrared spectroscopy(FTIR)indicated that the surface steps on RhCu NDs further promoted the C-C bond cleavage to increase the C1 ***,optimizing the surface geometric and electronic structures of nanocrystals by rational composition and morphology control can provide a promising strategy for developing practical DEFC devices.

关键词： Rh-Cu alloy Nano-dendrites Electrocatalysis Ethanol oxidation reaction In situ FTIR

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Effect of Mo content on the thermal stability of Ti-Mo-bearing ferritic steel

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International Journal of Minerals,Metallurgy and Materials 2021年第3期28卷 412-421页

作者： Yao Huang Wei-ning Liu Ai-min Zhao Jun-ke Han Zhi-gang Wang Hong-xiang yin China Electric Power Research Institute Beijing 100192China Institute of Engineering Technology University of Science and Technology BeijingBeijing 100083China State Grid Corporation Beijing 100031China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou 341000China Metal and Chemistry Research Institute China Academy of Railway Sciences Corporation LimitedBeijing 100081China

The effects of tempering holding time at 700℃on the morphology,mechanical properties,and behavior of nanoparticles in Ti-Mo ferritic steel with different Mo contents were analyzed using scanning electron microscopy and transmission electron *** equilibrium solid solution amounts of Mo,Ti,and C in ferritic steel at various temperatures were calculated,and changes in the sizes of nanoparticles over time at different Mo contents were *** experimental results and theoretical calculations were in good agreement with each other and showed that the size of nanoparticles in middle Mo content nano-ferrite(MNF)steel changed the least during *** Mo contents inhibited the maturation and growth of nanoparticles,but no obvious inhibitory effect was observed when the Mo content exceeded 0.37wt%.The tensile strength and yield strength continuously decreased with the tempering *** of the strengthening and toughening mechanisms showed that the different mechanical properties among the three different Mo content experiment steels were mainly determined by grain refinement strengthening(the difference range was 30-40 MPa)and precipitation strengthening(the difference range was 78-127 MPa).MNF steel displayed an ideal chemical ratio and the highest thermodynamic stability,whereas low Mo content nano-ferrite(LNF)steel and high Mo content nano-ferrite(HNF)steel displayed relatively similar thermodynamic stabilities.

关键词： ferritic steel nanoparticles interphase precipitation thermal stability ostwald ripening rate

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Detection of Ultra Trace Amount Gossypol with Chemiluminescence Using Capillary Electrophoresis as Injection Techniques

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Chinese Chemical Letters 2005年第12期16卷 1649-1651页

作者： Er Bao LIU Min ZHANG Bing Chun XUE Peng xiang ZHAO yin LIU School of Chemistry and Life Sciences Tianjin Normal University Tianjin 300074

Detection of ultra trace amount gossypol is reported. It is based on luminolhexacyanoferrate（Ⅲ） chemiluminescence reaction with gossypol as a sensitizer. The detection limit （3 σ ）of gossypol reaches 5.21 × 10^... 详细信息

关键词： Capillary electrophoresis chemiluminescence gossypol

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