期刊文献+
共找到20篇文章
< 1 >
每页显示 20 50 100
Distributed Plume Source Localization Using Hierarchical Sensor Networks 被引量:1
1
作者 匡兴红 刘雨青 +1 位作者 吴燕翔 邵惠鹤 《Journal of Donghua University(English Edition)》 EI CAS 2009年第1期56-61,共6页
A hierarchical wireless sensor networks(WSN) was proposed to estimate the plume source location.Such WSN can be of tremendous help to emergency personnel trying to protect people from terrorist attacks or responding t... A hierarchical wireless sensor networks(WSN) was proposed to estimate the plume source location.Such WSN can be of tremendous help to emergency personnel trying to protect people from terrorist attacks or responding to an accident.The entire surveillant field is divided into several small sub-regions.In each sub-region,the localization algorithm based on the improved particle filter(IPF) was performed to estimate the location.Some improved methods such as weighted centroid,residual resampling were introduced to the IPF algorithm to increase the localization performance.This distributed estimation method eliminates many drawbacks inherent with the traditional centralized optimization method.Simulation results show that localization algorithm is efficient for estimating the plume source location. 展开更多
关键词 wireless sensor networks source localization distributed localization improved particle filter
下载PDF
DISTRIBUTION AND ULTRASTRUCTURAL LOCALIZATION OF CARCINOEMBRYONIC ANTIGEN (CEA) IN SIGNET RING CELLS OF GASTRIC CANCER
2
作者 杨光霖 董聿明 +2 位作者 吴继锋 胥爱莲 张平 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 1989年第4期36-39,共4页
The distribution and ultrastructural localization of CEA in signet-ring cells of 15 gastric cancer specimens were observed by PAP and immunoelectron microscopic methods. The mechanism of abnormal distribution of CEA i... The distribution and ultrastructural localization of CEA in signet-ring cells of 15 gastric cancer specimens were observed by PAP and immunoelectron microscopic methods. The mechanism of abnormal distribution of CEA in the signet-ring cell and its biological significance are discussed. The results showed that the CEA positive rate in signet-ring cells was 100% with the polarity lost in distribution. Under the light microscope, the CEA stain patterns were of two types: cytoplasmic and membranous types. The former was predominant. Under the electron microscope, most of the CEA was distributed on the cell membrane and cytoplasm. CEA was found in intracellular membranous structure of the cancer cells, especially in protein synthesis and transport organellae (RER, Golgi Complex etc.). The synthesis of CEA in cancer cells increased, yet its elimination was somewhat hampered. The result was that the RER became extended and were full of CEA (+) material. In the free signet-ring cell, there was a small and short contact plane. The tight junction was severed as the cell junction reduced. The antigenic determinant of CEA was glycoprotein. The abnormal distribution of CEA in signet-ring cells might be the morphologic reflection of the glycosylation of surface glycoprotein of tumor cells. 展开更多
关键词 CEA DISTRIBUTION AND ULTRASTRUCTURAL localization OF CARCINOEMBRYONIC ANTIGEN IN SIGNET RING CELLS OF GASTRIC CANCER
下载PDF
A Survey on Distributed Network Localization from a Graph Laplacian Perspective
3
作者 HAN Zhimin LIN Zhiyun FU Minyue 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2024年第1期273-293,共21页
Network localization serves as a fundamental component for enabling various position based operations in multi-agent systems,facilitating tasks like target searching and formation control by providing accurate positio... Network localization serves as a fundamental component for enabling various position based operations in multi-agent systems,facilitating tasks like target searching and formation control by providing accurate position information for all nodes in the network.Network localization focuses on the challenge of determining the positions of nodes within a network,relying on the known positions of anchor nodes and internode relative measurements.Over the past few decades,distributed network localization has garnered significant attention from researchers.This paper aims to provide a review of main results and advancements in the field of distributed network localization,with a particular focus on the perspective of graph Laplacian.Owning to its favorable characteristics,graph Laplacian unifies various network localization,even when dealing with diverse types of internode relative measurements,into a unified protocol framework,which can be constructed by a linear method and ensure the global convergence. 展开更多
关键词 Distributed network localization graph Laplaian sensor network
原文传递
Adiabatic shear sensitivity of ductile metal based on gradient-dependent JOHNSON-COOK model
4
作者 王学滨 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第6期1355-1361,共7页
Based on the expression proposed by WANG for the local plastic shear deformation distribution in the adiabatic shear band(ASB) using gradient-dependent plasticity,the effects of 10 parameters on the adiabatic shear ... Based on the expression proposed by WANG for the local plastic shear deformation distribution in the adiabatic shear band(ASB) using gradient-dependent plasticity,the effects of 10 parameters on the adiabatic shear sensitivity were studied.The experimental data for a flow line in the ASB obtained by LIAO and DUFFY were fitted by use of the curve-fitting least squares method and the proposed expression.The critical plastic shear strains corresponding to the onset of the ASB for Ti-6Al-4V were assessed at different assigned ASB widths.It is found that the proposed expression describes well the non-linear deformation characteristics of the flow line in the ASB.Some parameters in the JOHNSON-COOK model are back-calculated using different critical plastic shear strains.The adiabatic shear sensitivity decreases as initial static yield stress,work to heat conversion factor and strain-rate parameter decrease,which is opposite to the effects of density,heat capacity,ambient temperature and strain-hardening exponent.The present model can predict the ASB width evolution process.The predicted ASB width decreases with straining until a stable value is reached.The famous model proposed by DODD and BAI only can predict a final stable value. 展开更多
关键词 adiabatic shear band TI-6AL-4V JOHNSON-COOK model WIDTH gradient-dependent plasticity theory local plastic shear deformation distribution
下载PDF
Measurement-Device-Independent Quantum Key Distribution with Two-Way Local Operations and Classical Communications 被引量:1
5
作者 谭勇刚 刘强 《Chinese Physics Letters》 SCIE CAS CSCD 2016年第9期10-13,共4页
Measurement-device-independent quantum key distribution (MDI-QKD) is proven to be immune to all the de- tector side channel attacks. With two symmetric quantum channels, the maximal transmission distance can be doub... Measurement-device-independent quantum key distribution (MDI-QKD) is proven to be immune to all the de- tector side channel attacks. With two symmetric quantum channels, the maximal transmission distance can be doubled when compared with the prepare-and-measure QKD. An interesting question is whether the transmission distance can be extended further. In this work, we consider the contributions of the two-way local operations and classical communications to the key generation rate and transmission distance of the MDI-QKD. Our numerical results show that the secure transmission distances are increased by about 12kin and 8 km when the 1 13 and the 2 B steps are implemented, respectively. 展开更多
关键词 QKD MDI is on Measurement-Device-Independent Quantum Key Distribution with Two-Way Local Operations and Classical Communications EPR QBER of with
下载PDF
EXACT CONTROLLABILITY FOR FIRST ORDER QUASILINEAR HYPERBOLIC SYSTEMS WITH VERTICAL CHARACTERISTICS 被引量:1
6
作者 李大潜 饶伯鹏 《Acta Mathematica Scientia》 SCIE CSCD 2009年第4期980-990,共11页
We consider first order quasilinear hyperbolic systems with vertical characteristics. It was shown in [4] that such systems can be exactly controllable with the help of internal controls applied to the equations corr... We consider first order quasilinear hyperbolic systems with vertical characteristics. It was shown in [4] that such systems can be exactly controllable with the help of internal controls applied to the equations corresponding to zero eigenvalues. However, it is possible that, for physical or engineering reasons, we can not put any control on the equations corresponding to zero eigenvalues. In this paper, we will establish the exact controllability only by means of physically meaningfnl internal controls applied to the equations corresponding to non-zero eigenvalues. We also show the exact controllability for a very simplified model by means of switching controls. 展开更多
关键词 quasilinear hyperbolic systems exact controllability local distributed con-trol switching controls
下载PDF
Electric field distribution and effective nonlinear AC and DC responses of graded cylindrical composites 被引量:1
7
作者 丁霞 贾艳霞 魏恩泊 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第5期569-576,共8页
The perturbation method is used to study the localization of electric field distribution and the effective nonlinear response of graded composites under an external alternating-current(AC) and direct-current(DC) e... The perturbation method is used to study the localization of electric field distribution and the effective nonlinear response of graded composites under an external alternating-current(AC) and direct-current(DC) electric field E app = E 0(1 + sin ωt).The dielectric profile of the cylindrical inclusions is modeled by function ε i(r) = C k r k(r ≤ a),where r is the radius of the cylindrical inclusion,and C k,k,a are parameters.In the dilute limit,the local potentials and the effective nonlinear responses at all harmonics are derived.Meanwhile,the general effective nonlinear responses are also derived and compared with the effective nonlinear responses at harmonics under the AC and DC external field.It is found that the effective nonlinear AC and DC responses at harmonics can be calculated by those of the general effective nonlinear of the graded composites under the external DC electric field.Moreover,the obtained local electrical fields show that the electrical field distribution in the cylindrical inclusions is controllable,and the maximum of the electric field inside the cylinder is at its center. 展开更多
关键词 graded composite effective nonlinear alternating-current and direct-current response local electric field distribution
下载PDF
DISTRIBUTED OPTIMAL LOCAL DOUBLE LOOP NETWORK
8
作者 李腊元 《Acta Mathematica Scientia》 SCIE CSCD 1992年第3期248-259,共12页
A distibuted optimal local double loop(DOLDL) network is presented. Emphasis is laid on the topology and distributed routing algorithms for the DOLDL. On the basis of building an abstract model, a set of definitions a... A distibuted optimal local double loop(DOLDL) network is presented. Emphasis is laid on the topology and distributed routing algorithms for the DOLDL. On the basis of building an abstract model, a set of definitions and theorems are described and proved. An algorithm which can optimize the double loop networks is presented. The optimal values of the topologic parameters for the DOLDL have been obtained by the algorithm, and these numerical results are analyzed. The study shows that the bounds of the optimal diameter (d) and average hop distance (a) for this class of networks are [square-root 3N -2] less-than-or-equal-to d less-than-or-equal-to [square-root 3N+1] and (5N/9(N-1)) (square-root 3N-1.8) < a < (5N/9 (N-1)). (square-root 3N - 0.23), respectively (N is the number of nodes in the network. (3 less-than-or-equal-to N less-than-or-equal-to 10(4)). A class of the distributed routing algorithms for the DOLDL and the implementation procedure of an adaptive fault-tolerant algorithm are proposed. The correctness of the algorithm has been also verified by simulating. 展开更多
关键词 NODE DISTRIBUTED OPTIMAL LOCAL DOUBLE LOOP NETWORK LINK
下载PDF
Rolling velocity and relative motion of particle detector in local granular flow
9
作者 Ran Li Bao-Lin Liu +1 位作者 Gang Zheng Hui Yang 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第11期388-394,共7页
The velocity of a particle detector in granular flow can be regarded as the combination of rolling and sliding velocities.The study of the contribution of rolling velocity and sliding velocity provides a new explanati... The velocity of a particle detector in granular flow can be regarded as the combination of rolling and sliding velocities.The study of the contribution of rolling velocity and sliding velocity provides a new explanation to the relative motion between the detector and the local granular flow.In this study,a spherical detector using embedded inertial navigation technology is placed in the chute granular flow to study the movement of the detector relative to the granular flow.It is shown by particle image velocimetry(PIV)that the velocity of chute granular flow conforms to Silbert’s formula.And the velocity of the detector is greater than that of the granular flow around it.By decomposing the velocity into sliding and rolling velocity,it is indicated that the movement of the detector relative to the granular flow is mainly caused by rolling.The rolling detail shown by DEM simulation leads to two potential mechanisms based on the position and drive of the detector. 展开更多
关键词 local velocity distribution rolling velocity inertial navigation technology relative velocity dependent(RVD)rolling friction
下载PDF
Mathematical Analysis of Energy Efficiency in IEEE 802.11 DCF
10
作者 高波 杨宇航 马惠业 《Transactions of Tianjin University》 EI CAS 2005年第5期332-337,共6页
The standardized IEEE ,802. II distributed coordination function ( DCF) provides a contention-based distributed channel access mechanism for mobile stations to share the wireless medium. However, when stations are m... The standardized IEEE ,802. II distributed coordination function ( DCF) provides a contention-based distributed channel access mechanism for mobile stations to share the wireless medium. However, when stations are mobile or portable units, power consumption becomes a primary issue since terminals are usually battery driven. This paper proposes an analytical model that calculates the energy efficiency of both the basic and the RTS/CTS access mechanisms of the IEEE 802. II protocol. The model is validated with simulation results using NS-2 simulation package. The effects of the network size, the average packet length, the initial contention window and maximum backoff stages on the energy efficiency of both access mechanisms are also investigated. Results show that the basic scheme has low energy efficiency at large packet length and large network size, and depends strongly on the number of stations and the backoff procedure parameters. Conversely, the RTS/CTS mechanism provides higher energy efficiency when the network size is large, and is more robust to variations in the backoff procedure parameters. 展开更多
关键词 energy efficiency: IEEE 802. 11: wireless local area networks (WLANs) distributed co ordination function (DCF)
下载PDF
Distributed sound source localization algorithm with sound velocity calibration in windy environments 被引量:3
11
作者 YAN Qingli CHEN Jianfeng 《Chinese Journal of Acoustics》 CSCD 2018年第1期35-44,共10页
A new sound source localization method with sound speed compensation is proposed to reduce the wind influence on the performance of conventional TDOA (Time Difference of Arrival) algorithms. First, the sound speed i... A new sound source localization method with sound speed compensation is proposed to reduce the wind influence on the performance of conventional TDOA (Time Difference of Arrival) algorithms. First, the sound speed is described as a set of functions of the unknown source location, to approximate the acoustic velocity field distribution in the wind field. Then, they are introduced into the TDOA algorithm, to construct nonlinear equations. Finally, the particle swarm optimization algorithm is used to estimate the source location. The simulation results show that the proposed algorithm can significantly improve the localization accuracy for different wind velocities, source locations and test area sizes. The experimental results show that the proposed method can reduce localization errors to about 40% of the original error in a four nodes localization system. 展开更多
关键词 Distributed sound source localization algorithm with sound velocity calibration in windy environments
原文传递
Experimental analysis of considering the sound pressure distribution pattern at the ear canal entrance as an unrevealed head-related localization clue
12
作者 TONG Xin QI Na MENG Zihou 《Chinese Journal of Acoustics》 CSCD 2018年第1期110-128,共19页
By analyzing the differences between binaural recording and real listening, it was deduced that there were some unrevealed auditory localization clues, and the sound pressure distribution pattern at the entrance of ea... By analyzing the differences between binaural recording and real listening, it was deduced that there were some unrevealed auditory localization clues, and the sound pressure distribution pattern at the entrance of ear canal was probably a clue. It was proved through the listening test that the unrevealed auditory localization clues really exist with the reduction to absurdity. And the effective frequency bands of the unrevealed localization clues were in- duced and summed. The result of finite element based simulations showed that the pressure distribution at the entrance of ear canal was non-uniform, and the pattern was related to the direction of sound source. And it was proved that the sound pressure distribution pattern at the entrance of the ear canal carried the sound source direction information and could be used as an unrevealed localization clue. The frequency bands in which the sound pressure distribution patterns had significant differences between front and back sound source directions were roughly matched with the effective frequency bands of unrevealed localization clues obtained from the listening tests. To some extent, it supports the pattern could be a kind of unrevealed auditory hypothesis that the sound pressure distribution localization clues. 展开更多
关键词 Experimental analysis of considering the sound pressure distribution pattern at the ear canal entrance as an unrevealed head-related localization clue
原文传递
Serrated flow accompanied with dynamic type transition of the Portevin-Le Chatelier effect in austenitic stainless steel
13
作者 Seung-Yong Lee Sita Chettri +3 位作者 Ritupan Sarmah Chikako Takushima Jun-ichi Hamada Nobuo Nakada 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第2期154-164,共11页
In order to further understand high-temperature deformation behavior and its-related mechanical prop-erties,the Portevin-Le Chatelier(PLC)effect in an Fe-19Cr-13Ni-0.2C austenitic stainless steel was in-vestigated usi... In order to further understand high-temperature deformation behavior and its-related mechanical prop-erties,the Portevin-Le Chatelier(PLC)effect in an Fe-19Cr-13Ni-0.2C austenitic stainless steel was in-vestigated using high-temperature digital image correlation(DIC)analysis.Under the tensile testing at temperatures from 473 to 623 K,different types of serrated flow appeared even at a constant applied strain rate,and the type transition took place dynamically in a certain order with deformation time.DIC analysis revealed that the dynamic type transition of the serrated flow obeys the PLC band propagation behavior,and that the transition of the PLC band propagation behavior could be attributed to the PLC band nucleation manner.Numerical modeling also proved that the nucleation manner of PLC band nu-cleation is determined by the spatial-temporal coupling effect. 展开更多
关键词 Dynamic strain aging(DSA) Austenitic stainless steel(γ-STS) Portevin-Le Chatelier(PLC)effect Digital image correlation(DIC) Local strain distribution
原文传递
Enhancement of Soil Discharge Channels on Potential Surrounding Buried Cables Under Impulsive Currents 被引量:1
14
作者 Wenxia Sima Xiaochuan Li +3 位作者 Tao Yuan Ming Yang Donghui Luo Jialun Li 《CSEE Journal of Power and Energy Systems》 SCIE EI CSCD 2022年第6期1794-1803,共10页
Substations have a large number of signal transmission cables beneath the ground.Both the insulation safety and signal reliability of the cables are affected severely by the electromagnetic field.Under high-amplitude ... Substations have a large number of signal transmission cables beneath the ground.Both the insulation safety and signal reliability of the cables are affected severely by the electromagnetic field.Under high-amplitude impulsive currents,the dispersion of currents can cause soil discharge and thus cause unexpected distortions in an electromagnetic field.This paper focuses on the distortions of the electric field.In general,soil discharge channels occur in the vicinity of the independent rod.Closer development of the channel might enhance the electric field distribution and the potential surrounding the outer insulation of the cables(i.e.the surface potential on the cable).Therefore,this paper establishes a platform for observing the soil discharge channel and measuring the surface potential.Direction characteristic of the channel is extracted from the captured image of soil discharge channels and the surface potential is obtained by the measured coupling capacitive current on the shield experimentally.This paper also presents an improved model considering a dynamic growing discharge channel for the transient analysis of the grounding electrode.Study results show the surface potential increases as the discharge channel approaches the cable.To quantify this enhancement effect,the ratio of the highest to the lowest value of surface potential in different directions is taken as the multiple of the surface potential increase.The calculated multiples of the surface potential increase are in the range of 1 to 1.64 times under different conditions by the improved model.Therefore,taking the soil discharge channel into account is helpful to accurately analyze the impulsive interference of buried cables. 展开更多
关键词 Coupling current grounding electrode impulsive current local potential distribution soil discharge channel
原文传递
EQUIVALENCE BETWEEN EXACT INTERNAL CONTROLLABILITY OF THE KIRCHHOFF PLATE-LIKE EQUATION AND THE WAVE EQUATION 被引量:1
15
作者 LIU KANGSHENG YU XINHUI 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2000年第1期71-76,共6页
When the rotatory inertia is taken into account, vibrations of a linear plate can be described by the Kirchhoff plate equation. Consider this equation with locally distributed control forces and some boundary conditio... When the rotatory inertia is taken into account, vibrations of a linear plate can be described by the Kirchhoff plate equation. Consider this equation with locally distributed control forces and some boundary condition which is the simply supported boundary condition for a rectangular plate. In this paper, the authors establish exact controllability of the system in terms of the equivalence to exact internal controllability of the wave equation, by means of a frequency domain characterization of exact controllability introduced recently in [11]. 展开更多
关键词 Kirchhoff plate equation Locally distributed control Exact controllability Wave equation Frequency domain condition
原文传递
STABILIZATION OF EULER-BERNOULLI BEAM WITH A NONLINEAR LOCALLY DISTRIBUTED FEEDBACK CONTROL 被引量:1
16
作者 Qingxu YAN Shuihung HOU Lanlan ZHANG 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2011年第6期1100-1109,共10页
This paper studies the stabilization problem of uniform Euler-Bernoulli beam with a nonlinear locally distributed feedback control. By virtue of nonlinear semigroup theory, energy-perturbed approach and polynomial mul... This paper studies the stabilization problem of uniform Euler-Bernoulli beam with a nonlinear locally distributed feedback control. By virtue of nonlinear semigroup theory, energy-perturbed approach and polynomial multiplier skill, the authors show that, corresponding to the different values of the parameters involved in the nonlinear locally distributed feedback control, the energy of the beam under the proposed feedback decays exponentially or in negative power of time t as t →∞. 展开更多
关键词 Energy perturbed method nonlinear locally distributed feedback control nonlinear semigroups polynomial multiplier uniform Euler-bernoulli beam.
原文传递
Locally distributed control of wave equations with variable coefficients 被引量:1
17
作者 冯绍继 冯德兴 《Science in China(Series F)》 2001年第4期309-315,共7页
For wave equations with variable coefficients on regions which are not necessarily smooth, we obtain a sufficient condition for the subregion on which the application of control will yield the exact controllability pr... For wave equations with variable coefficients on regions which are not necessarily smooth, we obtain a sufficient condition for the subregion on which the application of control will yield the exact controllability property by using piecewise multiplier method and Riemannian geometry method. Some examples are presented. 展开更多
关键词 wave equations exact controllability locally distributed control Riemannian manifold.
原文传递
STABILIZATION OF NONUNIFORM TIMOSHENKO BEAM WITH COUPLED LOCALLY DISTRIBUTED FEEDBACKS
18
作者 YANQingxu HOUShuiHung +1 位作者 HUANGGuangdong WANLi 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2005年第3期419-428,共10页
The stabilization problem of a nonuniform Timoshenko beam system With coupled locally distributed feedback controls is studied. First, by proving the uniqueness of the solution to the related ordinary differential equ... The stabilization problem of a nonuniform Timoshenko beam system With coupled locally distributed feedback controls is studied. First, by proving the uniqueness of the solution to the related ordinary differential equations, we establish the asymptotic decay of the energy corresponding to the closed loop system. Then, by virtue of piecewise multiplier method, we prove the exponential decay of the closed loop system. 展开更多
关键词 locally distributed feedback control timoshenko beam C_0 semigroups exponential stability piecewise multiplier
原文传递
Stabilization of Nonuniform Euler-Bernoulli Beam with Locally Distributed Feedbacks
19
作者 Xian-bing CAO Qing-xu YAN 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2012年第1期131-138,共8页
In this article, we study the stabilization problem of a nonuniform Euler-Bernoulli beam with locally distributed feedbacks. Firstly, using the semi-group theory, we establish the well-posedness of the associated clos... In this article, we study the stabilization problem of a nonuniform Euler-Bernoulli beam with locally distributed feedbacks. Firstly, using the semi-group theory, we establish the well-posedness of the associated closed loop system. Then by proving the uniqueness of the solution of a related ordinary differential equations, we derive the asymptotic stability of the closed loop system. Finally, by means of the piecewise frequency domain multiplier method, we prove that the corresponding closed loop system can be exponentially stabilized by only one of the two distributed feedback controls proposed in this paper. 展开更多
关键词 nonuniform Euler-Bernoulli beam linear locally distributed feedback control linear semigroup exponential stability piecewise multiplier method
原文传递
Privacy Preserving Query over Encrypted Multidimensional Massive Data in Cloud Storage
20
作者 XIANG Guangli LIN Xiang +1 位作者 WANG Hao LI Beilei 《Wuhan University Journal of Natural Sciences》 CAS CSCD 2018年第2期163-170,共8页
Cloud storage is widely used in massive data outsourcing, but how to efficiently query encrypted multidimensional data stored in an untrusted cloud environment remains a research challenge. We propose a high performan... Cloud storage is widely used in massive data outsourcing, but how to efficiently query encrypted multidimensional data stored in an untrusted cloud environment remains a research challenge. We propose a high performance and privacy-preserving query(p LSH-PPQ) scheme over encrypted multidimensional data to address this challenge. In our scheme, for a given query, the proxy server will return K top similar data object identifiers. An enhanced Ciphertext-Policy Attribute-Based Encryption(CP-ABE)policy is used to control access to the search results. Therefore, only the requester with the permission attribute can obtain correct secret keys to decrypt the data. Security analysis proves that the p LSH-PPQ scheme achieves data confidentiality and reserves the data owner's privacy in a semi-trusted cloud. In addition, evaluations demonstrate that the p LSH-PPQ scheme can significantly reduce response time and provide high search efficiency without compromising on search quality. 展开更多
关键词 cloud storage privacy preservation Locality Sensi-tive Hashing Scheme based on p-stable distributions (p-LSH) permission attribute
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部