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基于区块链的可搜索属性加密技术应用综述

计算机科学 2024年第S1期51卷 870-883页

作者：兰亚杰马自强陈嘉莉苗莉许新宁夏大学信息工程学院银川750021 宁夏大数据与人工智能省部共建协同创新中心银川750021 清华大学电子工程系北京100084

随着信息共享的蓬勃发展,数据隐私安全问题逐渐凸显,催生了区块链技术和可搜索属性加密技术的迅速发展。区块链作为一种去中心化、不可篡改的技术,保障了搜索数据的安全性和完整性,可搜索属性加密技术可以有效地防止非法用户的访问查询... 详细信息

随着信息共享的蓬勃发展,数据隐私安全问题逐渐凸显,催生了区块链技术和可搜索属性加密技术的迅速发展。区块链作为一种去中心化、不可篡改的技术,保障了搜索数据的安全性和完整性,可搜索属性加密技术可以有效地防止非法用户的访问查询。然而随着数据规模和复杂性的增加,出现了检索效率低、查询结果验证复杂、属性权限分发困难等问题。首先,针对以上问题,分别总结了基于区块链的可搜索加密技术、基于区块链的属性加密技术以及基于区块链的可搜索属性加密技术应用的研究现状。其次,对三者之间的优势和侧重点进行了比较分析。最后,重点总结了基于区块链的可搜索属性加密技术在关键字检索、属性权限管理以及数据完整性验证方面的应用,以及所面临的问题和挑战。希望为实现更安全、高效、去中心化的数据存储与共享提供更加安全的技术应用支持。

关键词：区块链属性加密可搜索加密隐私保护数据共享

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Entanglement of two Jaynes-Cummings atoms in single-excitation space

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Communications in Theoretical Physics 2021年第2期73卷 52-58页

作者： Ya Yang Yan Liu Jing Lu lan Zhou Key Laboratory of Low Dimensional Quantum Strncures and Quantum Control of Ministry of Education Department of Phlysics and Synergetic Innovation Center of Quantum Effects and ApplicationsKey Laboratory for Matter Microstructure and Function of Hunan ProvinceHunan Normal UniversityChangsha 410081China Collge of Physics and electronic engineering Hengyang Normal UniversityHengyang 421002China

We study the entanglement dynamics of two atoms coupled to their own Jaynes-Cummings cavities in single-excitation ***,we use concurrence to measure atomic entanglement,and consider the Bell-like states to be initial *** analysis suggests that collapse and revival take place in entanglement *** physical mechanism behind entanglement dynamics is periodic information and energy exchange between atoms and light *** the initial Bell-like states,evolutionary periodicity of the atomic entanglement can only be found if the ratio of the two atom-cavity coupling strengths is a rational ***,whether there is a time translation between two kinds of initial Bel-like state depends on odd versus even numbers of the coupling strength ratio.

关键词： cavity optomechanics Jaynes-Cummings cavities single excitation entanglement dynamics

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Design of Energy Modulation Massive SiMO Transceivers via Machine Learning

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Journal of Communications and information Networks 2020年第3期5卷 358-368页

作者： Muhang lan Jianhao Huang Han Zhang Chuan Huang national Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of ChinaChengdu 611731China The Future Network of intelligence institute and the School of Science and engineering the Chinese University of Hong KongShenzhen 518172China department of Electrical and Computer engineering University of CaliforniaDavis 95616USA

This paper considers a massive single-input multiple-output(SiMO)system,where multiple singleantenna transmitters simultaneously communicate with a receiver equipped with a large number of *** from the conventional noncoherent transceivers which require a certain level of the statistical information on the channel fading,we propose a joint transceiver design method based on machine learning,requiring a limited number of channel *** the proposed method,the multiple transmitters,the channel,and the receiver are represented with a deep neural network(NN),and an autoencoder is adopted to minimize the end-to-end transmission error ***,the relationship between the number of training samples and the transmission error probability is analyzed based on the confidence interval *** results show that the proposed NN-based transceiver achieves lower transmission error probability in typical scenarios,and is more robust against the channel parameters variation compared with the existing methods.

关键词： neural network(NN) energy modulation massive single-input multiple-output(SiMO) joint transceiver design confidence interval

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用SC方法实现状态变量振荡器

天津大学学报 1985年第3期 123-130页

作者：刘印华兰桂芬天津大学电子工程系

本文说明了开关电容(SC)积分器和有源RC积分器的等效原理,以及SC网络的一些优点。这种网络除了便于采用MOS技术集成以外,还具有高精度和高稳定度的特点。文中给出两种SC状态变量振荡器电路,该电路的输入信号为钟脉冲,输出信号为取样—... 详细信息

本文说明了开关电容(SC)积分器和有源RC积分器的等效原理,以及SC网络的一些优点。这种网络除了便于采用MOS技术集成以外,还具有高精度和高稳定度的特点。文中给出两种SC状态变量振荡器电路,该电路的输入信号为钟脉冲,输出信号为取样—保持正弦波,振荡频率与钟脉冲频率成正比,且比例系数仅与电路中的电容比有关而与钟脉冲频率无关,因而在一定电容比下,不需改变振荡电路元件即可在很宽频率范围内改变振荡频率。给出了模拟实验结果,结果与所推导公式的理论值相符。

关键词：振荡器电子设备开关电容反相积分器脉冲频率起搏频率状态变量 SC

Glucose measurement via Raman spectroscopy of graphene:Principles and operation

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Nano Research 2022年第10期15卷 8697-8704页

作者： Alireza Ahmadianyazdi Ngoc Hoang lan Nguyen Jie Xu Vikas Berry department of Mechanical and industrial engineering University of Illinois at ChicagoChicagoIllinois 60607USA department of Chemical engineering University of Illinois at ChicagoChicagoIllinois 60607USA

The sensitivity of graphene’s Raman characteristics to external perturbations can be exploited for sensing *** apply this principle,Raman spectroscopy of graphene in contact with a chemical/biological analyte is recorded to unravel a correlation between analyte’s physical/chemical/biological properties and electronic properties(Fermi energy and dopants level)of *** an example,we demonstrate the principle and operation of glucose measurement using graphene’s Raman spectroscopy,utilizing both affinity and enzymatic detection *** the affinity detection,we monitor Raman spectrum of graphene in contact with a glucose containing sample to quantify the attachment of glucose onto 1-pyrene boronic acid(PBA)functionalized *** is revealed that glucose covalent bond to PBA induces n-type doping in graphene and increases its Fermi level following the Hill–langmuir *** the enzymatic detection,we show that graphene’s Fermi energy shifts due to the biocatalytic oxidation of glucose by immobilized glucose oxidase(GOx)*** a result,graphene becomes p-doped with increasing glucose *** attribute this sensitivity to a re-distribution of ionic charges within the electric double layer(EDL)of graphene upon introducing the glucose *** model explains both our affinity and enzymatic glucose detection *** glucose detection,our graphene Raman spectroscopy-based sensor(GRS)may extend its applications to a broader range of remote and non-invasive detection without the need to employ electronics such as field-effect transistors.

关键词： graphene Raman spectroscopy glucose affinity detection glucose oxidase

Two-dimensional materials for light emitting applications:Achievement,challenge and future perspectives

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Nano Research 2021年第6期14卷 1912-1936页

作者： Yi Zhu Xueqian Sun Yilin Tang lan Fu Yuerui Lu engineering and Computer Science the Australian National UniversityCanberraACT2601Australia department of electronic Materials engineering Research School of Physics and Engineeringthe Australian National UniversityCanberraACT2601Australia

The two-dimensional(2D)materials have been widely developed recently in material characteristics with advanced optical and electrical properties,and they have been extensively studied as candidates for the next generation of optoelectronic *** review will mainly focus on the preparation methods and the light emitting applications of 2D transition metal dichalcogenides(TMDs),2D black phosphorene(BP)and 2D *** review will first introduce the preparation methods for TMDs and *** to the variations of band structure,exciton binding energies and light-matter interaction in TMDs and BP,the different light emitting devices(LEDs)designs based on TMDs and BP will be discussed and *** the review will turn the focus to 2D perovskites,starting with a description of the preparation methods for the different structural *** order to review and summarize the achievements of 2D perovskites-based LEDs,the high efficiency perovskites LEDs are ***,the review will present challenges,opportunities,and outlook for the future development of 2D materials-based light emitting applications.

关键词： two-dimensional materials light emitting devices optoelectronic devices perovskite transition metal dichalcogenides(TMDs) perovskite light emitting device(LED)

Hierarchical Ni-plated melamine sponge and MXene film synergistically supported phase change materials towards integrated shape stability,thermal management and electromagnetic interference shielding

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Journal of Materials Science & Technology 2023年第1期132卷 132-143页

作者： Ziling Cheng Guojun Chang Bai Xue lan Xie Qiang Zheng State Key Laboratory of Public Big Data Guizhou UniversityGuiyang 550025China department of Polymer Materials and engineering College of Materials and MetallurgyGuizhou UniversityGuiyang 550025China national engineering Research Center for Compounding and Modification of Polymer Materials National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane ProcessesGuiyang 550014China College of Polymer Science and engineering Zhejiang UniversityHangzhou 310000China

Along with the integrated and miniaturized development of advanced electronic devices,phase change materials(PCMs)simultaneously with efficient thermal management and high electromag-netic interference(EMi)shielding effectiveness(SE)are ungently ***,the shape-stabilized MXene/Ni-platted melamine sponge/Regenerated cellulose/Graphene nanoplate/Polyethylene glycol(MX/Ni@MS/RCG/PEG)composite PCMs comprising hierarchical Ni@MS/RCG and MXene film were fabricated via a facile encapsulation *** Ni@MS/RCG hybrid aerogel was prepared by electroless plating and sol-gel methods,and MXene film was obtained using vacuum-assisted filtra-tion *** synergistic effect of conductive Ni@MS/RCG networks and tight MXene film endows MX/Ni@MS/RCG/PEG composite PCMs with good shape stability,high cyclic reliability,large latent heat of phase change(154.3 J g^(–1)),excellent thermal conductivity(TC,0.47 W m^(–1)K^(–1))and favorable EMi shield-ing performance(32.7 dB).The TC of acceptable 0.47 W m^(–1)K^(–1)is observed for MX/Ni@MS/RCG-5/PEG at a rather low GNP content of merely 0.39 wt%.in addition,the temperature variation of MX/Ni@MS/RCG-5/PEG is a lot faster than that of pure PEG in the heating/cooling process,revealing the remarkable energy storage and release efficiency for the composite *** investigation has taken an important step to-wards shape-stabilized composite PCMs with both effective thermal management and high EMi SE for promising applications in electronic packaging and advanced energy.

关键词： Phase change material Thermal management Electromagnetic interference shielding Shape stability Encapsulation

Using an electronic Nose to Rapidly Assess Grandlure Content in Boll Weevil Pheromone Lures

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Journal of Bionic engineering 2011年第4期8卷 449-454页

作者： Charles P.-C. Suh Ningye Ding Yubin lan USDA-ARS Areawide Pest Management Research Unit College Station TX 77845 USA College of engineering Northeast Agriculture University Harbin 150030 P. R. China

Samples of pheromone lures used in boll weevil, Anthonomus grandis （Boheman）, eradication programs are routinely analyzed by Gas Chromatography （GC） to ensure lures are adequately dosed with grandlure, the synthetic aggregation phero- mone produced by male weevils. However, preparation of GC samples is tedious, time consuming, and requires a moderate level of experience. We examined the use of a commercially-available electronic nose （e-nose） for rapidly assessing the grandlure contents of lures. The e-nose was trained to recognize headspace collections of grandlure emitted from new lures and after lures were aged under field conditions for 4 d, 7 d, 10 d, and 14 d. Based on cross-validation of the training set, the e-nose was 82% accurate in discriminating among the different age classes of lures. Upon sampling headspace collections of pheromone from a different set of field-aged lures, the e-nose was 〈50% accurate in discriminating 4 d, 7 d, and 10 d aged lures from the other age classes of lures. However, the e-nose identified new and 14 d aged lure samples with 100% accuracy. in light of these findings, e-nose technology shows considerable promise as an alternative approach for rapidly assessing the initial grandlure contents of lures used in boll weevil eradication programs.

关键词： electronic nose Cyranose 320 boll weevil grandlure pheromone lure

Causes and statistical characteristics of bridge failures:A review

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Journal of Traffic and Transportation engineering(English Edition) 2022年第3期9卷 388-406页

作者： Guojing Zhang Yongjian Liu Jiang Liu Shiyong lan Jian Yang School of Highway Chang'an UniversityXian 710064China Research Center of Highway Large Structure engineering on Safety of Ministry of Education Chang'an UniversityXi'an 710064China AECOM New YorkNY 10158USA

Bridge failure, which is generally associated with serious economic and life losses, is defined as the incapacity of a constructed bridge or its components to perform as specified in the design and construction requirements. This paper presents an overview of current researches on the typical characteristics and causes of bridge failures based on 10 former investigations. Principal causes can be divided into internal causes and external causes or natural factors and human factors. Design error, construction mistakes, hydraulic, collision, and overload are the top 5 leading causes of bridge failures, resulting in more than70% of the bridge failures. Causes of bridge failures are closely related to regional economy,structural type, type of use, material type, and service age. The failure rate is very high for steel bridges, which is inseparable from excessive emphasis on structure strength but lack of consideration on structure stability and fatigue in early years. Researchers need to strengthen their research on the stability and fatigue of steel bridges, as well as inspection and maintenance. Extreme loads such as flood, collision, and overload contribute to a large number of bridge failures because of the lack of extreme loads data and design theory defects. it is critical for such bridges to have sufficient redundancy and capacity protection measures to reduce the probability of bridge failure due to extreme loads. Previous statistical methods and classification methods for the characteristics and causes of bridge failures lack unified standards, and a more scientific method needs to be established. A comprehensive electronic database on bridge damage and failures needs to be developed to establish damage models and conduct forensic studies to improve the design theory and specifications.

关键词： Bridge engineering Bridge failure Statistical characteristic Failure cause Case study

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