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医疗云平台中个人健康档案转诊时的安全共享方案

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湖北民族大学学报（自然科学版） 2024年第2期42卷 198-204页

作者：吕晨雨沈济南邓学剑陈鑫朋杜秋阳梁芳湖北民族大学智能科学与工程学院湖北恩施445000

为解决医疗云平台共享个人健康档案(personal health record,PHR)存在的隐私泄露和加解密效率不理想的问题,以医疗云平台中帕金森病患者的转诊场景为例,提出了一种基于线性秘密共享的改进密文属性代理重加密方案(improved linear secret... 详细信息

为解决医疗云平台共享个人健康档案(personal health record,PHR)存在的隐私泄露和加解密效率不理想的问题,以医疗云平台中帕金森病患者的转诊场景为例,提出了一种基于线性秘密共享的改进密文属性代理重加密方案(improved linear secret sharing based ciphertext attribute proxy re-encryption scheme,LCPS)。该方案利用线性秘密共享技术来隐藏访问策略中的隐私属性,降低因访问策略暴露引发的隐私泄露风险;该方案还对代理重加密算法进行改进,通过减少复杂的双线性运算,提高了加解密效率。结果表明,LCPS在加解密方面的表现要优于其他方案。在判定性q-BDHE(q-decisional bilinear Diffie-Hellman exponent)困难假设下具有选择明文攻击时的不可区分性(indistinguishability under chosen-plaintext attack,IND-CPA)。该方案具有可移植性,同样适用于医疗云中其他病症转诊时的个人健康档案安全共享。

关键词：医疗云属性加密线性秘密共享策略隐藏代理重加密个人健康档案隐私保护

A Protective Mechanism for the Access Control System in the Virtual Domain

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China Communications 2016年第11期13卷 129-142页

作者： jinan shen Deqing Zou Hai Jin Kai Yang Bin Yuan Weiming Li Services Computing Technology and System Laboratory Cluster and Grid Computing LaboratorySchool of Computing Science and TechnologyHuazhong University of Science and Technology School of Information Engineering Hubei University for Nationalities

In traditional framework,mandatory access control(MAC) system and malicious software are run in kernel mode. Malicious software can stop MAC systems to be started and make it do invalid. This problem cannot be solved under the traditional framework if the operating system(OS) is comprised since malwares are running in ring 0 level. In this paper,we propose a novel way to use hypervisors to protect kernel integrity and the access control system in commodity operating systems. We separate the access control system into three parts: policy management(PM),security server(SS) and policy enforcement(PE). Policy management and the security server reside in the security domain to protect them against malware and the isolation feather of the hypervisor can protect them from attacks. We add an access vector cache(AVC) between SS and PE in the guest OS,in order to speed up communication between the guest OS and the security domain. The policy enforcement module is retained in the guest OS for performance. The security of AVC and PE can be ensured by using a memory protection mechanism. The goal of protecting the OS kernel is to ensure the security of the execution path. We implementthe system by a modified Xen hypervisor. The result shows that we can secure the security of the access control system in the guest OS with no overhead compared with modules in the latter. Our system offers a centralized security policy for virtual domains in virtual machine ***: hypervisor; virtualization; memo-

关键词：访问控制系统内存保护机制拟域操作系统内核系统管理程序安全服务器强制访问控制恶意软件

High-performance flexible semiconductor fibres for multi-scenario communication applications

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Science China Materials 2024年第7期67卷 2363-2364页

作者： Qinghui Lin Yang Li Guozhen shen School of Information Science and Engineering University of JinanJinan 250022China School of Microelectronics Shandong UniversityJinan 250101China School of Integrated Circuits and Electronics Beijing Institute of Technology Beijing 100081China

With the advances in the field of flexible fibre technology in recent years,a variety of flexible fibres with different preparation processes have emerged[1,2].However,most of the flexible fibres in the past have structural breaks,making them unsuitable for long-term use as wearable fabrics[3,4].Glass semiconductors are widely used in thermally stretched fibres due to their advantages such as controllable fluidity,but they suffer from electronic defects compared with crystalline semi conductors in electronic semiconductors such as silicon(Si)and germanium(Ge)[5].Obviously,the semiconductor component in flexible optic fibres is a key component in regulating their mechanical and electrical properties[6].

关键词： wear fibres fibre

Lightweight Intrusion Detection Using Reservoir Computing

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Computers, Materials & Continua 2024年第1期78卷 1345-1361页

作者： Jiarui Deng Wuqiang shen Yihua Feng Guosheng Lu Guiquan shen Lei Cui Shanxiang Lyu Joint Laboratory on Cyberspace Security China Southern Power GridGuangzhou510080China College of Cyber Security Jinan UniversityGuangzhou510632China Guangdong Power Grid Company Limited Guangzhou510663China School of Computer Science and Technology Guangdong University of TechnologyGuangzhou510006China China Southern Power Grid Extra High Voltage Transmission CompanyGuangzhouChina

The blockchain-empowered Internet of Vehicles(IoV)enables various services and achieves data security and privacy,significantly advancing modern vehicle ***,the increased frequency of data transmission and complex network connections among nodes also make them more susceptible to adversarial *** a result,an efficient intrusion detection system(IDS)becomes crucial for securing the IoV *** IDSs based on convolutional neural networks(CNN)often suffer from high training time and storage *** this paper,we propose a lightweight IDS solution to protect IoV against both intra-vehicle and external *** approach achieves superior performance,as demonstrated by key metrics such as accuracy and ***,our method achieves accuracy rates ranging from 99.08% to 100% on the Car-Hacking dataset,with a remarkably short training time.

关键词： Echo state network intrusion detection system Internet of Vehicles reservoir computing

Second-order error analysis of the averaged L1 scheme L1 for time-fractional initial-value and subdiffusion problems

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Science China Mathematics 2024年第7期67卷 1641-1664页

作者： Jinye shen Fanhai Zeng Martin Stynes School of Mathematics Southwestern University of Finance and EconomicsChengdu611130China School of Mathematics Shandong UniversityJinan250100China Applied and Computational Mathematics Division Beijing Computational Science Research CenterBeijing100193China

Fractional initial-value problems(IVPs) and time-fractional initial-boundary value problems(IBVPs), each with a Caputo temporal derivative of order α ∈(0, 1), are considered. An averaged variant of the well-known L1 scheme is proved to be O(N^(-2)) convergent for IVPs on suitably graded meshes with N points, thereby improving the O(N^(-(2-α))) convergence rate of the standard L1 scheme. The analysis relies on a delicate decomposition of the temporal truncation error that yields a sharp dependence of the order of convergence on the degree of mesh grading used. This averaged L1 scheme can be combined with a finite difference or piecewise linear finite element discretization in space for IBVPs, and under a restriction on the temporal mesh width, one gets again O(N^(-2)) convergence in time, together with O(h^(2)) convergence in space,where h is the spatial mesh width. Numerical experiments support our results.

关键词： time-fractional subdiffusion averaged L1 scheme

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用LVDT式针入度仪研究沥青的流变特性

公路交通科技 1989年第3期6卷 10-19页

作者：沈金安

用LVDT式针入度仪可以测定不同荷重、不同温度、不同贯入时间的沥青针入度变化情况,设备简单、操作方便、数据可靠。本文介绍仪器的结构,测定沥青流变参数的方法和对国内外6种沥青的评定结果。

关键词：针入度仪沥青流变特性测定

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深度捕食二次梯度加速差分进化算法

华中科技大学学报（自然科学版） 2014年第11期42卷 23-27,33页

作者：沈济南梁芳郑明辉湖北民族学院计算机科学与技术系湖北恩施445000

针对标准差分进化算法自身存在的贪婪而易于早熟的问题,提出一种深度捕食二次梯度加速差分进化算法.混合算法首先把整个搜索空间作为整体进行广泛搜索,并预设一个梯度加速触发参数,对种群中较优的个体采用基于梯度加速的局部搜索,使算... 详细信息

针对标准差分进化算法自身存在的贪婪而易于早熟的问题,提出一种深度捕食二次梯度加速差分进化算法.混合算法首先把整个搜索空间作为整体进行广泛搜索,并预设一个梯度加速触发参数,对种群中较优的个体采用基于梯度加速的局部搜索,使算法能够快速收敛到全局最优值.同时为了保持种群的多样性,设计了一种差分变异算子.通过与已有的改进算法仿真对比可知:该算法能够有效地跳出局部极值,防止算法早熟,且收敛速度快.结合相关文献对深度捕食二次梯度加速差分进化算法的工程应用进行了仿真研究,仿真结果验证了该方法的可行性和有效性.

关键词：深度捕食二次梯度加速差分进化多样性变异负荷分配

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一种新的混合差分粒子群优化算法及其应用

四川大学学报（工程科学版） 2014年第6期46卷 38-43页

作者：沈济南梁芳郑明辉湖北民族学院计算机科学与技术系湖北恩施445000

针对B2C电子商务物流配送优化精度不高的问题,提出基于一种新的混合差分粒子群启发式优化算法的B2C电子商务物流配送优化方案。首先,将粒子群种群作为辅助变异算子与差分进化算法种群进行交叉操作,产生的新子代继承了父代和母代的优势特... 详细信息

针对B2C电子商务物流配送优化精度不高的问题,提出基于一种新的混合差分粒子群启发式优化算法的B2C电子商务物流配送优化方案。首先,将粒子群种群作为辅助变异算子与差分进化算法种群进行交叉操作,产生的新子代继承了父代和母代的优势特性,从而避免了单一算法的早熟收敛和收敛速度过慢的问题。通过与已有的改进算法仿真对比,该算法能够有效地跳出局部极值,防止算法早熟且收敛速度很快。其次,借鉴已有文献方法对混合算法在B2C路径优化问题中的工程应用进行了实验研究,通过仿真显示所设计配送方案具有更快的计算速度和更优的目标收敛值。

关键词：混合差分粒子群定向变异物流路径优化

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网红代言人温暖特质对品牌幸福感的影响

经济与管理 2024年第2期38卷 58-67页

作者：聂烜许基南沈鹏熠江西财经大学工商管理学院江西南昌330013

基于模仿理论和动机改变理论,深入探究网红代言人温暖特质对品牌幸福感的影响机制及作用边界。三个实验的结果表明:网红代言人温暖特质显著正向影响品牌幸福感;共情、顾客公民行为分别起到中介作用,且二者共同起到链式中介作用;社会距... 详细信息

基于模仿理论和动机改变理论,深入探究网红代言人温暖特质对品牌幸福感的影响机制及作用边界。三个实验的结果表明:网红代言人温暖特质显著正向影响品牌幸福感;共情、顾客公民行为分别起到中介作用,且二者共同起到链式中介作用;社会距离负向调节了网红代言人温暖特质对共情的正向影响和共情的中介作用,以及共情与顾客公民行为的链式中介作用。

关键词：网红代言人温暖特质品牌幸福感共情顾客公民行为社会距离

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