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A One-Time Pad Encryption Scheme Based on Efficient Physical-Layer Secret Key Generation for Intelligent IoT System

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China Communications 2022年第7期19卷 185-196页

作者： Liquan Chen Kailin cao Tianyu lu Yi lu Aiqun Hu School of Cyber Science and Engineering Southeast UniversityNanjing 210096China Purple Mountain Laboratories Nanjing 211189China National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China

The one-time pad(OTP)is an applicationlayer encryption technique to achieve the informationtheoretic security,and the physical-layer secret key generation(SKG)technique is a promising candidate to provide the random keys for *** this paper,we propose a joint SKG and OTP encryption scheme with the aid of a reconfigurable intelligent surface(RIS)to boost secret key *** maximize the efficiency of secure communication,we divide the process of secure transmission into two stages:SKG and then encrypted packet ***,we design an optimal algorithm for allocating time slots for SKG to maximize SKG efficiency without security ***,we design a key updating protocol based on our SKG scheme for OTP *** results verify that our scheme can generate keys securely and efficiently,and significantly improve the secure communication performance in an intelligent IoT system.

关键词： physical layer security intelligent internet of things one-time pad reconfigurable intelligent surface

Analytic Formulae for Estimating Motor Proportion of Load Model Under Small Disturbance

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1599-1607页

作者： Ping Ju Shiqiu Xia Yuqing Jin lu cao School of Electrical and Power Engineering Hohai UniversityNanjing 211100China the East China Branch of the State Grid Corporation of China Shanghai 200120China

In the composite load model(CLM),which is commonly used in China,an equivalent motor and equivalent static load are used to represent all electrical equipment and networks connected to a load *** research has determined typical values of electrical and mechanical parameters for load models of different load types,which improves the basis for load ***,the motor proportion parameter is not the same for different load buses or at different times;therefore,obtaining the actual motor proportion is key to establishing an accurate load *** the existing load modeling method,motor proportion is commonly identified along with other parameters under rare large disturbances;therefore,the value of the motor proportion is fixed by the time when a large disturbance *** this paper,formulae are derived to estimate motor proportion under small disturbances,and these formulae allow direct calculation of motor proportion without using any optimization *** proposed estimation formulae do not rely on any parameters of load model or power system but instead rely only on measurement of the voltage and active power at steady-state points before and after a small *** of universality of small disturbances in power systems,estimating time-varying motor proportion under small disturbances will be helpful for solving the time-varying problem of load ***,the proposed motor proportion estimation formulae are validated by simulations,physical experiments,and field experiments.

关键词： Composite load model load modeling motor proportion parameter estimation

An upper bound for the generalized adiabatic approximation error with a superposition initial state

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Science China(Physics,Mechanics & Astronomy) 2015年第3期58卷 1-7页

作者： WANG WenHua cao HuaiXin lu Ling YU BaoMin College of Mathematics and Information Science Shaanxi Normal University Section of Military Operation Research Border Defence Academy College of Mathematics and Information Science Weinan Normal University

The classical adiabatic approximation theory gives an adiabatic approximate solution to the Schr6dinger equation （SE） by choosing a single eigenstate of the Hamiltonian as the initial state. The superposition principle of quantum states enables us to mathematically discuss the exact solution to the SE starting from a superposition of two different eigenstates of the time-dependent Hamiltonian H（0）. Also, we can construct an approximate solution to the SE in terms of the corresponding instantaneous eigenstates of H（t）. On the other hand, any physical experiment may bring errors so that the initial state （input state） may be a superposition of different eigenstates, not just at the desired eigenstate. In this paper, we consider the generalized adiabatic evolution of a quantum system starting from a superposition of two different eigenstates of the Hamiltonian at t = 0. A generalized adiabatic approximate solution （GAAS） is constructed and an upper bound for the generalized adiabatic approximation error is given. As an application, the fidelity of the exact solution and the GAAS is estimated.

关键词： upper bound error quantum adiabatic approximation

Towards energy-efficient storage placement in large scale sensor networks

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Frontiers of Computer Science 2014年第3期8卷 409-425页

作者： Lei XIE Sanglu lu Yingchun cao Daoxu CHEN State Key Laboratory for Novel Software Technology Nanjing University Nanjing 210023 China

Data storage has become an important issue for energy efficient data management in sensor networks. In this paper, we investigate the optimized storage placement problem in large scale sensor networks, aiming to achieve minimized energy cost. In order to efficiently deal with large scale deployment areas with irregular shape, we propose to utilize the hop as the computation unit instead of the node, such that computation complexity can be greatly reduced. We propose methodologies to solve the optimization problem both in situations for limited and unlimited numbers of storage units. The ultimate goal of this paper is to give fundamental guidance for optimized storage placement in large scale sensor networks. Simulation results show that our methodologies can greatly reduce the overall energy consumption compared to other strategies.

关键词： data storage optimization storage placement,sensor network large scale

Synthesis of TiO_2/ZnSn(OH)_6 Hollow Nano-composite via a Simultaneous Crystallization-etching Route as Photocatalyst

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Chinese Journal of Structural Chemistry 2013年第12期32卷 1829-1834页

作者： YU Han LI Chang-Rong cao Zhou-Ming ZHANG zi-Zhong College of Materials Science and Engineering Fuzhou University College of Chemistry and Chemical Engineering Fuzhou University

We report the synthesis of TiO2/ZnSn（OH）6 as a novel nano-composite material via a simultaneous crystallization-etching route with cubic nano-ZnSn（OH）6 and TiF4 as the precursors. The structure, composition and morphology of the composite were characterized by XRD, EDS, FETEM and FESEM, which showed the prepared TiO2/ZnSn（OH）6 had a unique morphology of hollow cubic nano-ZnSn（OH）6 attached with rutile TiO2 nanoparticles. The results of photocatalytic activity measurement indicated the photocatalytic activity of the prepared composite was better than that of nano-ZnSn（OH）6. This study may be helpful for the design and fabrication of functional comoosite materials.

关键词： ZnSn(OH)6 rutile TiO2 nano-composite photocatalysis

In vitro porcine brain tubulin assembly inhibition by water extract from a Chinese medicinal herb,Tripterygium hypoglaucum Hutch

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World Journal of Gastroenterology 2006年第7期12卷 1133-1135页

作者： zi-Qin Liang Neng cao Zhong-Kui Song Xu Wang School of Life Sciences Yunnan Normal University Kunming 650092Yunnan Province China

AIM： To investigate the effect of Tripterygium hyp-oglaucum Hutch （THH） on the assembly and disassembly process of tubulin and its possible mode of action.METHODS： In vitro porcine brain tubulin assembly assay was employed to analyze the inhibitory effects of THH at different concentrations （0.05 μg/L, 0.07 μg/L, 0.09μg/L）. Colchicine （0.0025 mmol/L, 0.0050 mmol/L, 0.0075 mmol/L） was used as a positive control.RESULTS： THH could significantly inhibit the assembly of isolated porcine brain tubulin at all tested concentrations.CONCluSION： THH is capable of inducing aneuploidy in mammals via tubulin polymerization inhibition pathway and may pose a genetic risk to human beings.

关键词： Tripterygium hypoglaucum (level) Hutch Tubulin assembly-disassembly

Vulnerability analysis of the Chinese coupled aviation and high-speed railway network

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Chinese Journal of Aeronautics 2022年第12期35卷 189-199页

作者： Yiqiao WANG Xianbin cao Fangyun QIN lu(Carol)TONG School of Electronic and Information Engineering Beihang UniversityBeijing 100191China School of Information Engineering Capital Normal UniversityBeijing 100191China

The integrated aviation and High-Speed Railway(HSR)transportation system plays a vital role for today’s inter-city transportation ***,an increasing number of unexpected disruptions(such as operation failures,natural disasters,or intentional attacks)pose a considerable threat to the normal operation of the system,especially on ground transfer,leading to the extensive research on its *** approaches mainly focus on interruptions within a single transportation mode,neglecting the role of ground transfer which serves as a coupled connection between aviation and High-Speed *** paper proposes a network-based framework for evaluating the vulnerability of the Chinese Coupled Aviation and High-Speed Railway(CAHSR)network from the viewpoint of ground transfer *** the end-to-end travel time and passenger flow information into consideration as an evaluation measure and analyzing from the perspective of urban agglomerations,an adaptive method is developed to identify the critical cities and further investigate their failure impacts on the geographic distribution of *** addition,the proposed model explores variations of vulnerability under different failure time *** on the empirical study,some major conclusions are highlighted as follows:(A)Only a few cities show significant impacts on the network’s vulnerability when ground transfer interruptions occurred.(B)The distribution of vulnerability is not proportional to the distance between failure city and influenced city.(C)The vulnerability is more serious in the morning and evening when the ground transfer is *** findings may provide new insights for maintenance and optimization of the CAHSR network and other real-world transportation networks.

关键词： Air transportation Complex networks Railway network Transfer Vulnerability

Metal-organic frameworks derived transition metal phosphides for electrocatalytic water splitting

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Journal of Energy Chemistry 2022年第5期31卷 494-520页

作者： Li-Ming cao Jia Zhang Li-Wen Ding zi-Yi Du Chun-Ting He Key Laboratory of Functional Small Molecules for Ministry of Education College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang 330022JiangxiChina Key Laboratory for Green Chemistry of Jiangxi Province Nanchang 330022JiangxiChina

It is critical to synthesize high-efficiency electrocatalysts to boost the performance of water splitting to meet the requirements of industrial applications. Metal-organic frameworks(MOFs) can function as ideal molecular platforms for the design of highly reactive transition metal phosphides(TMPs), a kind of candidates for high-efficiently electrocatalytic water splitting. The intrinsic activity of the electrocatalysts can be greatly improved via modulating the electronic structure of the catalytic center through the MOF precursors/templates. Moreover, the carbon layer converted in-situ by the organic ligands can not only protect the TMPs from being degraded in the harsh electrochemical environments, but also avoid agglomeration of the catalysts, thereby promoting their activities and stabilities. Furthermore,heteroatom-containing ligands can incorporate N, S or P, etc. atoms into the carbon matrixes after conversion, regulating the coordination microenvironments of the active centers as well as their electronic structures. In this review, we first summarized the latest developments in MOF-derived TMPs by the unique advantages in metal, organic ligand, and morphology regulations for electrocatalytic water splitting. Secondly, we concluded the critical scientific issues currently facing for designing state-of-the-art TMP-based electrocatalysts. Finally, we presented an outlook on this research area, encompassing electrocatalyst construction, catalytic mechanism research, etc.

关键词： Metal-organic framework Transition metal phosphide Water splitting Electrocatalyst Electronic structure

人工智能文生视频大模型Sora对科技伦理的冲击及应对

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新疆师范大学学报（哲学社会科学版） 2025年第1期46卷 142-148页

作者：曹贤平南昌工程学院马克思主义学院江西南昌330099

Sora的推出是人类社会发展和人工智能进步的标志性事件,凸显出生成式人工智能的强大功能。Sora的爆火离不开规模化数据、先进算法和规模化算力,其内在运行机制紧扣文本输入、文本编码、视频生成和视频输出的基本逻辑,在人类社会具有广... 详细信息

Sora的推出是人类社会发展和人工智能进步的标志性事件,凸显出生成式人工智能的强大功能。Sora的爆火离不开规模化数据、先进算法和规模化算力,其内在运行机制紧扣文本输入、文本编码、视频生成和视频输出的基本逻辑,在人类社会具有广阔应用前景。但Sora在技术更迭和运用过程中可能给科技伦理带来诸如冲击人的主体性地位、导致人们认知的混乱性、冲击伦理规则的适用性、冲击数字隐私伦理并造成数字歧视等风险。因此,要坚持以人为本,运用技术手段增强Sora的数据筛选力度和敏捷治理效度,防止数据泄露和侵犯隐私,进行伦理设计实现科技伦理与时俱进,辅之必要的教育培训,以此提升全民运用人工智能技术的能力。

关键词： Sora 生成式人工智能科技伦理