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Blockchain-Based Certificateless Bidirectional Authenticated Searchable Encryption Scheme in Cloud Email System

Computer Modeling in Engineering & Sciences 2024年第6期139卷 3287-3310页

作者： Yanzhong Sun Xiaoni Du Shufen Niu xiaodong yang College of Mathematics and Statistics Northwest Normal UniversityLanzhou730070China College of Computer Science and Engineering Northwest Normal UniversityLanzhou730070China

Traditional email systems can only achieve one-way communication,which means only the receiver is allowed to search for emails on the email *** this paper,we propose a blockchain-based certificateless bidirectional authenticated searchable encryption model for a cloud email system named certificateless authenticated bidirectional searchable encryption(CL-BSE)by combining the storage function of cloud server with the communication function of email *** the new model,not only can the data receiver search for the relevant content by generating its own trapdoor,but the data owner also can retrieve the content in the same ***,there are dual authentication functions in our ***,during encryption,the data owner uses the private key to authenticate their identity,ensuring that only legal owner can generate the keyword ***,the blockchain verifies the data owner’s identity by the received ciphertext,allowing only authorized members to store their data in the server and avoiding unnecessary storage space *** obtain a formal definition of CL-BSE and formulate a specific scheme from the new system *** the security of the scheme is analyzed based on the formalized security *** results demonstrate that the scheme achieves multikeyword ciphertext indistinguishability andmulti-keyword trapdoor privacy against any adversary *** addition,performance evaluation shows that the new scheme has higher computational and communication efficiency by comparing it with some existing ones.

关键词： Cloud email system authenticated searchable encryption blockchain-based designated server test multi-trapdoor privacy multi-ciphertext indistinguishability

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Zincophilic Ti_(3)C_(2)Cl_(2)MXene and anti-corrosive Cu NPs for synergistically regulated deposition of dendrite-free Zn metal anode

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Journal of Materials Science & Technology 2024年第2期169卷 137-147页

作者： Yunfei Shen Yi Liu Kaisheng Sun Tiantian Gu Gang Wang Yue yang Jianxiang Pang yang Zheng xiaodong yang Long Chen Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832003China Institute for Chemistry Chemnitz University of TechnologyChemnitz 09107Germany CAS Key Laboratory of Functional Materials and Devices for Special Environments Xinjiang Key Laboratory of Electronic Information Materials and DevicesCenter of Materials Science and Optoelectronics EngineeringXinjiang Technical Institute of Physics and Chemistry of CASUrumqi 830011China Key Laboratory of Ecophysics and Department of Physics College of ScienceShihezi UniversityShihezi 832003China

Dendrites growth,chemical corrosion,and hydrogen evolution reaction(HER)on zinc anodes are the main barriers for the development of aqueous zinc-ion batteries(AZIBs).Constructing interfacial protec-tive layer is an effective way to alleviate the side reactions on the ***,Cu/Ti_(3)C_(2)Cl_(2)MXene(CMX)with high zincophilic and hydrophobic property is prepared by the lewis molten salts etching method,and the CMX interface protection layer is constructed by a simple spin *** CMX coat-ing layer can provide abundant nucleation sites and uniformize the charge distribution through the zin-cophilic Ti_(3)C_(2)Cl_(2)MXene matrix,leading to homogenous Zn *** addition,the hydrophobic coat-ing contained anti-corrosive Cu nanoparticles can prevent the Zn anode from the electrolyte,beneficial for suppressing the chemical corrosion and ***,the stable and reversible Zn plating/stripping is achieved for the Zn anode coated by the CMX,which exhibits the lifespan of over 1400 h at 0.5 mA cm^(−2),and even can steadily run for 700 h with 65 mV at 10 mA cm^(−2).Furthermore,CMX@Zn shows a high coulombic efficiency of over 100%for 3800 cycles,which indicates that the CMX@Zn electrode has excellent stability and reversibility of Zn stripping/*** full batteries assembled with ZnCoMnO/C(ZCM)cathodes also exhibits higher capacity(450.6 mAh g^(−1)at 0.1 A g^(−1))and cycle stability(capacity retention of 70%after 1500 cycles).This work enhanced the lifespan of AZIBs and broaden the research of multifunctional coating layer to other secondary batteries based on metal anodes.

关键词： Zinc anode Spin coating Zincophilic MXene Anti-corrosive Cu NPs Multifunctional coating

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Electricity Carbon Quota Trading Scheme based on Certificateless Signature and Blockchain

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Computer Modeling in Engineering & Sciences 2024年第2期138卷 1695-1712页

作者： xiaodong yang Runze Diao Tao Liu Haoqi Wen Caifen Wang College of Computer Science and Engineering Northwest Normal UniversityLanzhou730070China Institute of China TelecomWanwei China TelecomWanwei Information Technology Co.Ltd.Lanzhou730030China College of Big Data and Internet Shenzhen Technology UniversityShenzhen518118China Key Laboratory of Cryptography and Data Analytics Northwest Normal UniversityLanzhou730070China

The carbon tradingmarket can promote“carbon peaking”and“carbon neutrality”at low cost,but carbon emission quotas face attacks such as data forgery,tampering,counterfeiting,and replay in the electricity trading *** signatures are a new cryptographic technology that can address traditional cryptography’s general essential certificate requirements and avoid the problem of crucial escrowbased on identity ***,most certificateless signatures still suffer fromvarious security *** present a secure and efficient certificateless signing scheme by examining the security of existing certificateless signature *** ensure the integrity and verifiability of electricity carbon quota trading,we propose an electricity carbon quota trading scheme based on a certificateless signature and *** scheme utilizes certificateless signatures to ensure the validity and nonrepudiation of transactions and adopts blockchain technology to achieve immutability and traceability in electricity carbon quota *** addition,validating electricity carbon quota transactions does not require time-consuming bilinear pairing *** results of the analysis indicate that our scheme meets existential unforgeability under adaptive selective message attacks,offers conditional identity privacy protection,resists replay attacks,and demonstrates high computing and communication performance.

关键词： Electricity carbon trading certificateless signature blockchain forgery attack carbon quota

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In-situ template etching synthesis of BiON/BiOCl_(0.9)I_(0.1) heterojunction for photocatalytic degradation of tetracycline

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ChemPhysMater 2024年第1期3卷 103-110页

作者： xiaodong yang Qi Shen Wenwen Cao Bo Xu Yiqiang Sun Cuncheng Li School of Chemistry and Chemical Engineering University of JinanJinan 250022China

Hierarchical heterostructures have emerged as promising candidates for the efficient photocatalytic degradation of antibiotics owing to their matched energy levels and tunable absorption ***,we report the facile synthesis of a heterojunction photocatalyst composed of basic bismuth nitrate(BiON)and BiOCl_(0.9)I_(0.1) using a simple room-temperature hydrolysis *** results demonstrate that the BiON/BiOCl_(0.9)I_(0.1) composite exhibits superior photodegradation performance compared to pure-phase materials owing to the catalytic enhancement at the heterointerface and the effective separation of the photogenerated ***,the unique three-dimensional microsphere morphology of the synthesized composite enhances its specific surface area and light absorption,further enhancing its photocatalytic *** the tetracycline(TC)photodegradation reaction as a model reaction,the catalyst could degrade 88%of TC in just 25 ***,this work provides a promising strategy for the facile and low-cost synthesis of heterogeneous photocatalytic degradation materials.

关键词： Heterojunction Tetracycline reduction Visible light Photocatalysis

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Imaging the western boundary of the Sichuan Craton from multiple geophysical observations

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Journal of Earth Science 2024年

作者： Qihang Yin Xi Xu xiaodong yang Xuhua Shi Lei Wu Andrew V.Zuza Liu yang Hefeng Tian Yuanhai Shu Shufeng yang Nevada Bureau of Mines and Geology University of Nevada China Aero Geophysical Survey and Remote Sensing Center for Natural Resources China Geological Survey School of Earth Sciences Zhejiang University Research Center for Structures in Oil and Gas Bearing Basins Ministry of Education Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of Oceanology Innovation Academy of South China Sea Ecology and Environmental Engineering Chinese Academy of Sciences School of Mechanical and Electrical Engineering Hubei Open University

The boundary between the cratonic and orogenic lithospheres is one of the most significant seismogenic zones characterized by strong lithospheric deformation. As the essential tectonic block bounding the eastern Tibetan Plateau， the Sichuan Craton (SCC) resists the eastward escape of Plateau’s crustal materials， resulting in the uplift of the Songpan-Ganzi Block (SGB) and the crustal deformation of the Longmenshan tectonic belt (LMTB). To uncover the compressional structures and deformational mode of the LMTB and SCC， it is crucial to determine the precise location and geometry of the western boundary of the SCC. To address this issue， the lithospheric properties of the obduction SGB， the underthrusting SCC， and the LMTB were analyzed using a series of geophysical data， including seismic reflection profiles， magnetotellurics， aeromagnetics， gravity， and seismic tomography. The crust of the SGB is characterized by low magnetism， low seismic velocity， low resistivity and low Bouguer gravity， while that of the SCC features non-uniform high magnetism， high seismic velocity， high resistivity and high Bouguer gravity. The LMTB， as the boundary between the SGB and SCC， shows the geophysical characteristics similar to the SCC along the southern and central segments. The integration of all these geophysical observations suggests that the SCC’s western boundary follows the Yingxiu-Beichuan fault along the northern segment， without obvious underthrust. However， this boundary is located west of the Wenchuan-Maoxian fault zone along the southern and central segments， with distinct westward wedging/underthrusting. The irregular geometry of the SCC’s western boundary can further explain the variation in structural deformation along the LMTB. By comparing the differences in crustal thickness and lithospheric strength between the SGB and SCC， this study suggests that the varying crustal strength between tectonic blocks may be the controlling factor for the irregular geometry of the

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Quantum control for time-dependent noise by inverse geometric optimization

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Science China(Physics,Mechanics & Astronomy) 2024年

作者： xiaodong yang Yingcheng Li Ran Liu Xinfang Nie Tao Xin Dawei Lu Jun Li Institute of Quantum Precision Measurement State Key Laboratory of Radio Frequency Heterogeneous IntegrationCollege of Physics and Optoelectronic Engineering Shenzhen University State Key Laboratory of Surface Physics Department of Physics Center for Field Theory and Particle Physics and Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and Technology Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and Technology Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong)

Quantum systems are exceedingly difficult to engineer because they are sensitive to various types of noises. In particular, timedependent noises are frequently encountered in experiments but how to overcome them remains a challenging problem. In this work, we propose a flexible robust control technique to resist time-dependent noises based on inverse geometric optimization working in the filter-function formalism. The basic idea is to parameterize the control filter function geometrically and minimize its overlap with the noise spectral density. This then effectively reduces the noise susceptibility of the controlled system evolution. We show that the proposed method can produce high-quality robust pulses for realizing desired quantum evolutions under realistic noise models. Also, we demonstrate this method in examples including dynamical decoupling and quantum sensing protocols to enhance their performances.

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壳聚糖-SiO_(2)气凝胶/纤维素/聚丙烯复合水刺材料的制备及其吸附染料性能

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纺织学报 2024年第2期45卷 179-188页

作者：肖昊孙辉于斌朱祥祥杨潇东浙江理工大学纺织科学与工程学院(国际丝绸学院) 浙江杭州310018 浙江省现代纺织技术创新中心浙江绍兴312000

为制备用于有机染料废水处理的生物质材料,以纤维素纤维/聚丙烯(CF/PP)为基材,经氧化后与以壳聚糖(CS)和硅酸四乙酯(TEOS)为原料制备的CS-SiO_(2)混合溶液进行反应,再通过冷冻干燥得到CS-SiO_(2)气凝胶/氧化纤维素(OCF)/PP复合水刺非织... 详细信息

为制备用于有机染料废水处理的生物质材料,以纤维素纤维/聚丙烯(CF/PP)为基材,经氧化后与以壳聚糖(CS)和硅酸四乙酯(TEOS)为原料制备的CS-SiO_(2)混合溶液进行反应,再通过冷冻干燥得到CS-SiO_(2)气凝胶/氧化纤维素(OCF)/PP复合水刺非织造材料。对复合材料的形貌、结构和其对有机染料吸附性能进行测试与表征,结果表明:相较于CF/PP水刺非织造材料,CS-SiO_(2)气凝胶/OCF/PP复合水刺非织造材料表面出现明显的微孔结构,在OCF/PP水刺非织造材料表面出现了归属于CS和SiO_(2)的红外特征峰;当TEOS体积分数为25%时,制得的样品在30℃、pH值为7的条件下对亚甲基蓝(MB)的吸附效率可达99.63%,经5次重复使用后,其对MB的吸附效率仍保持在80.59%左右;相比于CF/PP水刺非织造材料,CS-SiO_(2)气凝胶/OCF/PP复合水刺非织造材料的拉伸强度和断裂伸长率略有下降。

关键词：纤维素纤维/聚丙烯水刺非织造材料壳聚糖二氧化硅气凝胶有机染料吸附

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复振型的物理意义——以两自由度陀螺系统为例

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力学与实践 2024年第2期46卷 432-434页

作者：杨晓东商林源北京工业大学材料与制造学部北京100124 沈阳航空航天大学航空宇航学院沈阳110136

在传统振动力学教学中,复振型主要用于振动方程解耦的数学操作,对其物理意义阐述不清楚。本文从简单的旋转框架下两自由度线性系统入手,阐述了模态振动中复振型表征各振子位移与速度组合的比例关系,而非实振型所表征的位移比例关系。本... 详细信息

在传统振动力学教学中,复振型主要用于振动方程解耦的数学操作,对其物理意义阐述不清楚。本文从简单的旋转框架下两自由度线性系统入手,阐述了模态振动中复振型表征各振子位移与速度组合的比例关系,而非实振型所表征的位移比例关系。本文明确了复振型振动的非同时性及伴随性,引导振动力学的初学者深刻理解复振型的直观物理意义。

关键词：振动复振型陀螺效应两自由度系统

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大型矿用齿轮传动系统宏观参数动力学优化

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振动与冲击 2024年第2期43卷 179-186页

作者：杨孝新肖鹿杨晓东李奇奇高晓鑫金鹏程中国矿业大学矿业学院江苏徐州221116 新疆天池能源有限责任公司新疆昌吉831100 新疆维吾尔自治区科技发展战略研究院乌鲁木齐830000 新疆大学机械工程学院乌鲁木齐830017

为研究多级定轴齿轮传动系统的动态特性优化方法,以大型矿用齿轮箱为对象,利用广义有限元思想建立包含齿轮设计参数与系统布局参数的宏观参数动力学模型,采用Newmark-β时域积分法对额定转速工况下的动力学方程进行求解,在此基础上建立... 详细信息

为研究多级定轴齿轮传动系统的动态特性优化方法,以大型矿用齿轮箱为对象,利用广义有限元思想建立包含齿轮设计参数与系统布局参数的宏观参数动力学模型,采用Newmark-β时域积分法对额定转速工况下的动力学方程进行求解,在此基础上建立优化模型,在优化过程中实现了一个基于势能法的可优化的动态方程中的时变啮合刚度计算程序,同时提出了包含系统动态特性与体积优化在内的多目标优化方法,并与单一目标的优化方法进行比较。研究结果可为矿用齿轮传动系统的宏观参数设计提供理论参考。

关键词：多目标优化参数化动力学模型布局参数动态特性宏观参数

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偶氮苯磺酸薄膜的光致取向可重复性

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液晶与显示 2024年第5期39卷 553-560页

作者：杨小东彭增辉穆全全刘怀宇中国科学院长春光学精密机械与物理研究所吉林长春130033

偶氮苯磺酸SD1作为一种液晶光致取向材料,具有强锚定、可再次重新取向等优点。本文研究了偶氮苯磺酸光取向材料SD1薄膜在405 nm线偏振光辐照下的光致取向重复写入性能。研究发现,在线偏振光重复擦写曝光SD1膜的过程中,随擦写次数增加,... 详细信息

偶氮苯磺酸SD1作为一种液晶光致取向材料,具有强锚定、可再次重新取向等优点。本文研究了偶氮苯磺酸光取向材料SD1薄膜在405 nm线偏振光辐照下的光致取向重复写入性能。研究发现,在线偏振光重复擦写曝光SD1膜的过程中,随擦写次数增加,膜饱和有序度持续下降。经过200次重复擦写后(累计能量密度1200 J/cm^(2)),饱和有序度(S)从0.78下降到0.3,取向速度从0.39 s^(-1)下降到0.08 s^(-1)。对重复取向过程中SD1膜的紫外可见(UV-Vis)吸收光谱进行了实时监测,发现在单次取向过程中SD1膜的UV-Vis吸收光谱峰值吸光度先快速下降再缓慢回升后达到饱和,并整体呈现吸收下降的趋势。经历200次重取向后,吸光度从0.10下降到0.03。这表明重取向过程中面内反式SD1的分子数量逐渐减少导致取向能力减弱,因而重写次数受限。在关闭辐照光一段时间后,面内分子数量有一定程度的回升。总之,SD1薄膜在线偏振光重复擦写过程中出现面内分子数量持续下降的现象,由于SD1薄膜面内分子数量直接影响着其取向能力,这种部分可逆的面内分子数量变化导致SD1可重复取向能力有限。

关键词：偶氮苯磺酸 SD1 光致取向

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