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Efficient Attribute-Based Encryption from R-LWE

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Chinese Journal of Electronics 2014年第4期23卷 778-782页

作者： zhu weiling YU Jianping WANG Ting ZHANG Peng XIE Weixin ATR Key Laboratory of National Defense Technology Shenzhen University

Attribute-based encryption(ABE) has been an active research area in cryptography due to its attractive applications. But almost all attribute-based encryption schemes are based on bilinear maps, which leave them vulnerable to quantum cryptanalysis. The latticebased ABE schemes from the Learning with errors(LWE)have appeared, but they are not efficient enough for practical applications. Thus we propose an efficient attributebased encryption based on the Learning with errors over Rings(R-LWE), which is called ABE R-LWE. The security analysis shows that ABE R-LWE scheme is secure in the selective-set model under the R-LWE assumption, whose security can reduce to the hardness of the shortest vector problem in the worst case on ideal lattices. The efficiency analysis indicates that ABE R-LWE is more efficient than previous ABE cryptosystems on lattices.

关键词： Attribute-based encryption Lattice RLWE

Study of transient luminescence of three kinds of Ru complexes bound to DNA

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Science China(Physics,Mechanics & Astronomy) 2008年第2期51卷 133-139页

作者： zhu weiling LIU XueWen WANG Hui YU HuiJuan LI AiZheng CHAO Hui ZHENG KangCheng JI LiangNian State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen UniversityGuangzhou 510275China College of Chemistry and Chemical Engineering Sun Yat-sen UniversityGuangzhou 510275China Department of Technical Physics Maoming CollegeMaoming 525000China

The transient luminescence of three kinds of ruthenium complexes [Ru(bpy)2(7-CH3-dppz)]2+, [Ru(bpy)2(7-F-dppz)]2+ and [Ru(phen)2(7-F-dppz)]2+ bound to calf thy-mus DNA (ctDNA) has been studied by using the time-resolved spectroscopy. The results show that the luminescence is due to the radiative decay from the charge-transfer states to the ground state. By the interaction with DNA, the radia-tiveless rate of the photoexcited Ru complex molecules decreases, which results in the increase of luminescence lifetime and efficiency. The structure of the Ru com-plex has an important impact on the interaction with DNA. The [Ru(bpy)2(7-CH3-dppz)]2+ shows the longest luminescence lifetime (about 382 ns), while the [Ru(bpy)2(7-F-dppz)]2+ shows the shortest lifetime (about 65 ns). The possible origin of the luminescence dynamics is discussed.

关键词： ultrafast photoelectronics transient luminescence DNA and Ru complex ultrafast spectroscopic technology

Enhanced piezoelectric properties in low-temperature sintered Pb(Zr,Ti)O_(3)-based ceramics via Yb_(2)O_(3)doping

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Journal of Advanced Dielectrics 2024年第4期14卷 30-37页

作者： Wanfeng zhuang weiling Wang Yaxia Luo Hong Liu Jianguo zhu College of Materials Science and Engineering Sichuan University Chengdu 610065 P.R.China

Pb(Mg_(0.5)W_(0.5))O_(3)–Pb(Ni_(1/3)Nb_(2/3))O_(3)–Pb(Zr_(0.5)Ti_(0.5))O_(3)(PNN–PMW–PZT)piezoceramics were sintered at a low temperature of 900℃by the mixed metal oxide powder solid-state reaction ***_(3)and Li_(2)CO_(3)as sintering aids and Yb_(2)O_(3)as a dopant were added into the PNN–PMW–PZT ceramic system for low-temperature sintering and enhancement of electrical properties,*** effects of different Yb_(2)O_(3)doping amounts on the microstructure,dielectric,piezoelectric and ferroelectric properties of the samples were systematically *** piezoceramics doped with 0.1 mol%Yb_(2)O_(3)have optimal electrical properties(d_(33)=563 pC/N,k_(p)=0.66,ε_(r)=2728(1 kHz),tanδ=0.0176(1 kHz),and T_(C)=301℃).While the piezoceramics doped with 0.3 mol%Yb_(2)O_(3)have optimal energy conversion properties:the piezoelectric voltage coefficient g_(33)=26.7×10^(-3)Vm/N and the effective piezoelectric energy conversion coefficient d_(33)×g_(33)=14366×10^(-15)m^(2)/N.

关键词： Piezoelectric properties ferroelectric properties low-temperature sintering PZT energy conversion coefficient

New insights into the correlations between circulating tumor cells and target organ metastasis

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Signal Transduction and Targeted Therapy 2024年第1期9卷 211-233页

作者： Qinru Zhan Bixia Liu Xiaohua Situ Yuting Luo Tongze Fu Yanxia Wang Zhongpeng Xie Lijuan Ren Ying zhu weiling He Zunfu Ke Department of Pathology The First Affiliated Hospital of Sun Yat-sen University510000 GuangzhouGuangdongP.R.China Institute of Precision Medicine The First Affiliated Hospital of Sun Yat-sen University510000 GuangzhouGuangdongP.R.China Zhongshan School of Medicine Sun Yat-sen University510000 GuangzhouGuangdongP.R.China Department of Radiology The First Affiliated Hospital of Sun Yat-sen University510000 GuangzhouGuangdongP.R.China Department of Microbiology and Immunology Weill Cornell MedicineNew YorkNY 10065USA School of Medicine Xiang’an Hospital of Xiamen UniversityXiamen University361000 XiamenFujianP.R.China

Organ-specific metastasis is the primary cause of cancer patient *** distant metastasis of tumor cells to specific organs depends on both the intrinsic characteristics of the tumor cells and extrinsic factors in their *** an intermediate stage of metastasis,circulating tumor cells(CTCs)are released into the bloodstream from primary and metastatic *** harboring aggressive or metastatic features can extravasate to remote sites for continuous colonizing growth,leading to further *** the past decade,numerous studies demonstrated that CTCs exhibited huge clinical value including predicting distant metastasis,assessing prognosis and monitoring treatment response et ***,increasingly numerous experiments are dedicated to identifying the key molecules on or inside CTCs and exploring how they mediate CTC-related organ-specific *** on the above molecules,more and more inhibitors are being developed to target CTCs and being utilized to completely clean CTCs,which should provide promising prospects to administer advanced ***,the application of various nanomaterials and microfluidic technologies in CTCs enrichment technology has assisted to improve our deep insights into the phenotypic characteristics and biological functions of CTCs as a potential therapy target,which may pave the way for us to make practical clinical *** the present review,we mainly focus on the role of CTCs being involved in targeted organ metastasis,especially the latest molecular mechanism research and clinical intervention strategies related to CTCs.

关键词： metastasis organs insight

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气相二氧化硅对环氧填料体系流变性的影响

硅酸盐学报 2005年第5期33卷 547-552页

作者：杨晓鸿朱薇玲武汉工业学院生物与化学工程系武汉430023

采用AR500流变仪,测量了气相法制备的二氧化硅的环氧填料体系的剪切弹性模量G′、剪切粘性模量G″及其随角频率ω的变化曲线。发现当气相二氧化硅质量分数较小时,lgG′,lgG″lgω相互关系基本上呈直线,在高频部位lgG′,lgG″开始微微向... 详细信息

采用AR500流变仪,测量了气相法制备的二氧化硅的环氧填料体系的剪切弹性模量G′、剪切粘性模量G″及其随角频率ω的变化曲线。发现当气相二氧化硅质量分数较小时,lgG′,lgG″lgω相互关系基本上呈直线,在高频部位lgG′,lgG″开始微微向下偏离直线形态;随着气相二氧化硅质量分数的增加,直线整体向上平移的同时斜率降低。从分子物理学观点分析认为,气相二氧化硅的增稠性和触变性可以归因于气相二氧化硅原始颗粒表面氢键的相互作用以及与环氧分子之间的作用,引入氢键效应建立理论模型,推得的数学公式拟合了实验曲线。

关键词：气相二氧化硅环氧填料体系流变性

Proactive Caching at the Wireless Edge:A Novel Predictive User Popularity-Aware Approach

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Computer Modeling in Engineering & Sciences 2024年第8期140卷 1997-2017页

作者： Yunye Wan Peng Chen Yunni Xia Yong Ma Dongge zhu Xu Wang Hui Liu weiling Li Xianhua Niu Lei Xu Yumin Dong College of Computer Science Chongqing UniversityChongqing400044China School of Computer and Software Engineering Xihua UniversityChengdu610039China School of Computer and Information Engineering Jiangxi Normal UniversityNanchang330022China Electric Power Research Institute of State Grid Ningxia Electric Power Co. Ltd.Yinchuan750002China College of Mechanical and Vehicle Engineering Chongqing UniversityChongqing400030China School of Computer Science and Technology Beijing Institute of TechnologyBeijing100083China School of Computer Science and Technology Dongguan University of TechnologyDongguan523808China School of Emergency Management Xihua UniversityChengdu610039China College of Computer and Information Science Chongqing Normal UniversityChongqing401331China

Mobile Edge Computing(MEC)is a promising technology that provides on-demand computing and efficient storage services as close to end users as *** an MEC environment,servers are deployed closer to mobile terminals to exploit storage infrastructure,improve content delivery efficiency,and enhance user ***,due to the limited capacity of edge servers,it remains a significant challenge to meet the changing,time-varying,and customized needs for highly diversified content of ***,techniques for caching content at the edge are becoming popular for addressing the above *** is capable of filling the communication gap between the users and content providers while relieving pressure on remote cloud ***,existing static caching strategies are still inefficient in handling the dynamics of the time-varying popularity of content and meeting users’demands for highly diversified entity *** address this challenge,we introduce a novel method for content caching over MEC,i.e.,*** synthesizes a content popularity prediction model,which takes users’stay time and their request traces as inputs,and a deep reinforcement learning model for yielding dynamic caching *** results demonstrate that PRIME,when tested upon the MovieLens 1M dataset for user request patterns and the Shanghai Telecom dataset for user mobility,outperforms its peers in terms of cache hit rates,transmission latency,and system cost.

关键词： Mobile edge computing content caching system average cost deep reinforcement learning collaborative mechanism

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网络环境下高校图书馆期刊剔旧新探

图书馆杂志 2005年第8期24卷 44-45页

作者：朱伟玲浙江工业大学图书馆杭州310014

分析了网络环境下高校图书馆藏刊饱和趋势与信息周期缩短、馆藏标准交叉和不同载体交叉、学术研究滞后与剔旧工作紧迫等新情况,提出应用“零增长”理论、树立馆藏特色及确定剔旧标准等对策。

关键词：高校图书馆期刊剔除期刊剔旧网络环境 “零增长”理论新探图书馆藏剔旧工作学术研究馆藏特色

Land use land cover changes(LULCC) analysis using geospatial data(2000-2020) in Karak Pakistan

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Land use land cover changes(LULCC) analysis using geospatial...

2023年中国地球科学联合学术年会

作者： Haris Faheem Zeeshan Khattak Yingfeng Ji weiling zhu Rui Qu Ye zhu Institute of Tibetan Plateau Research Chinese Academy of Sciences University of Chinese Academy of Sciences

Due to increased population, drastic changes occurred in the land use pattern in Karak Pakistan, as well as the land use land cover variations in the time span 2000–2020. We identify different land use land cover classes in area of interest and find the remarkable variations in land use land cover pattern through GIS and remote sensing technique.

关键词： LULCC Land use land cover changes analysis using geospatial data in Karak Pakistan

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光纤拉曼放大器的最大拉曼增益特性

红外与激光工程 2016年第1期45卷 236-241页

作者：龙青云胡素梅朱伟玲广东石油化工学院计算机与电子信息学院广东茂名525000 广东石油化工学院广东省石化装备故障诊断重点实验室广东茂名525000 广东石油化工学院理学院广东茂名525000

为了分析同向抽运与反向抽运光纤拉曼放大器的最大拉曼增益,基于耦合微分方程,采用理论推导的方法,根据不同抽运结构下信号光放大的不同实际情况定义并推导出同向抽运光纤拉曼放大器和反向抽运光纤拉曼放大器的最大拉曼增益公式。然后,... 详细信息

为了分析同向抽运与反向抽运光纤拉曼放大器的最大拉曼增益,基于耦合微分方程,采用理论推导的方法,根据不同抽运结构下信号光放大的不同实际情况定义并推导出同向抽运光纤拉曼放大器和反向抽运光纤拉曼放大器的最大拉曼增益公式。然后,详细分析了各个参数对两种抽运方式下光纤拉曼放大器的最大拉曼增益的影响。对两种抽运方式下相同参数引起的最大拉曼增益进行了比较。结果表明,同样的参数对同向抽运与反向抽运光纤拉曼放大器最大拉曼增益的影响有相同的地方,也有不同的地方。最后,将最大拉曼增益和常用的开关增益进行了比较。对光纤拉曼放大器的实验、成本估计和器件效率等研究有重要参考意义。

关键词：光纤通信光纤拉曼放大器理论推导最大拉曼增益同向抽运反向抽运