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Threat-Based Declassification and Endorsement for Mobile Computing

Chinese Journal of Electronics 2019年第5期28卷 1041-1052页

作者： YIN Lihua GUO Yunchuan ZHANG Huibing HUANG Wenting FANG Binxing Cyberspace Institute of Advanced Technology Guangzhou University The State Key Laboratory of Information Security Institute of Information Engineering CAS Guangxi Key Lab of Trusted Software Guilin University of Electronic Technology The National Computer Network Emergency Response Technical Team/Coordination Center of China

Declassification and endorsement can efficiently improve the usability of mobile ***, both declassify and endorse operations in practice are often ad-hoc and nondeterministic, thus, being insecure. From a new perspective of threat assessments,we propose the Threat-based typed security π-calculus(πTBTS) to model declassification and endorsement in mobile computing. Intuitively, when relaxing confidentiality policies and/or integrity policies, we respectively assess threats brought by performing these two relaxes. If these threats are acceptable, the declassification and/or endorsement operations are permitted; Otherwise, they are denied. The proposed assessments have explicit security conditions, results and less open parameters,so our approach solves the problem of the ad-hoc and nondeterministic semantics and builds a bridge between threat assessments and declassification/endorsement.

关键词： Declassification Endorsement Threat assessment Mobile computing π-Calculus

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An adaptive admission control mechanism for a cluster-based web server system 16

An adaptive admission control mechanism for a cluster-based ...

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16th International Parallel and Distributed Processing Symposium, IPDPS 2002

作者： Lim, Sang Seok Lee, Chul Ahn, Chul Woo Lee, Chang Gyu Park, Kyu Ho Computer Engineering Research Lab. EECS Department Korea Advanced Institute of Science and Technology CORE Lab. KAIST 373-1 Taejon Korea Republic of

ISBN: (纸本)0769515738

For QoS, we propose a new admission control mechanism called Q-PID, with which a web server system provides an user with satisfactory service by guaranteeing the bounded and predictive response time. The Q-PID controller is based on a feedback method that current output of the system is fed back into the input so that the system controls the next output properly. The controller accepts or rejects a new incoming request according to the accept ratio which is estimated dynamically at runtime by averaging the response times of previously accepted requests. Even though the system is under heavy load, the controller can sustain the bounded response time. We designed and implemented the controller for a cluster-based web server system. The experimental results indicate that the controller provides bounded response time. © 2002 IEEE.

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Contribution of non-scrambled chroma information in privacy-protected face images to privacy leakage

Contribution of non-scrambled chroma information in privacy-...

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10th International Workshop on Digital-Forensics and Watermarking, IWDW 2011

作者： Sohn, Hosik Lee, Dohyoung De Neve, Wesley Plataniotis, Konstantinos N. Ro, Yong Man Image and Video Systems Lab. Department of Electrical Engineering Korea Advanced Institute of Science and Technology Korea Republic of Multimedia Lab. Department of Electrical and Computer Engineering University of Toronto Canada

ISBN: (纸本)9783642322044

To mitigate privacy concerns, scrambling can be used to conceal face regions present in surveillance video content. Given that lightweight scrambling tools may not protect chroma information in order to limit bit rate overhead in heterogeneous usage environments, this paper investigates how the presence of non-scrambled chroma information in face regions influences the effectiveness of automatic and human face recognition (FR). To that end, we apply three automatic FR techniques to face images that have been privacy-protected by means of a layered scrambling technique developed for Motion JPEG XR, testing the effectiveness of automatic FR and layered scrambling using various experimental conditions. In addition, we investigate whether agreement exists between the judgments of 32 human observers and the output of automatic FR. Our experimental results demonstrate that human observers are not able to successfully recognize face images when simultaneously visualizing scrambled luma and non-scrambled chroma information. However, when an adversary has access to the coded bit stream structure, the presence of non-scrambled chroma information may significantly contribute to privacy leakage. By additionally applying layered scrambling to chroma information, our experimental results show that the amount of privacy leakage can be substantially decreased at the cost of an increase in bit rate overhead, and with the increase in bit rate overhead dependent on the number of scalability layers used. © 2012 Springer-Verlag.

关键词： Scalability

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ZERO-POWER MULTI-THRESHOLD TEMPERATURE SENSOR BASED ON SHAPE MEMORY ALLOY ANTENNA

ZERO-POWER MULTI-THRESHOLD TEMPERATURE SENSOR BASED ON SHAPE...

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2022 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2022

作者： Zeng, Wenxin Wang, Wei Sonkusale, Sameer Department of Electrical and Computer Engineering Tufts University United States Nano Lab. Advanced Technology Laboratory Tufts University United States

ISBN: (纸本)9781940470047

Monitoring critical temperature transition events is essential for perishable goods during transportation. However, conventional sensors require expensive electronics and continuous power sources for their functioning, which makes it impractical for cost and logistical reasons for monitoring a large number of goods. Based on our previous work using shape memory alloy or SMA, we propose a zero-power multi-section SMA-wire-based antenna that can record multiple levels of critical temperature crossing events without any need for peripheral electronic components or batteries. This paper presents details of fabrication and test/validation efforts of the shape memory effect of the conjoined multi-section SMA antenna for the recording of temperature violation events. © 2022 TRF.

关键词： Antennas

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User interface specification in complex web-based information spaces

User interface specification in complex web-based informatio...

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3rd IASTED International Conference on Human-computer Interaction, HCI 2008

作者： Memmel, Thomas Ziegler, Heiko Oed, Richard Reiterer, Harald Human-Computer Interaction Lab. University of Konstanz Germany Daimler AG Group Research and Advanced Engineering GR/ESP Ulm Germany

ISBN: (纸本)9780889867253

The development of complex web-based information spaces faces very demanding challenges. Requirements analysis and design demands interdisciplinary modelling approaches. When using typical paper-based methods, an IT organization often experiences frustrating communication issues between teams as well as with suppliers. We present a toolkit for XML-based prototyping of corporate websites at Daimler AG. The approach beats a new path towards interactive specifications of user interface (UI) requirements and the substitution of paper-based artifacts.

关键词： Websites

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Design and analysis of an axial flux magnetically geared generator 7

Design and analysis of an axial flux magnetically geared gen...

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7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015

作者： Johnson, Matthew Gardner, Matthew C. Toliyat, Hamid A. Advanced Electric Machines and Power Electronics Lab Department of Electrical and Computer Engineering Texas AandM University College StationTX United States

ISBN: (纸本)9781467371506

Axial flux magnetically geared machines offer the potential to achieve exceptional torque densities at high diameters. This work proposes a topology for an axial flux magnetically geared machine, in which the electric machine is placed in the bore of the axial flux magnetic gear. This new topology offers the advantage of correctly matching the size of the electric machine to its required torque without increasing the volume of the system beyond that of the magnetic gear. A proof of concept prototype with a torque density of 7.8 kNm/m3 was designed, fabricated, and tested to evaluate the novel topology. A less conservative alternate design capable of achieving 60.6 kNm/m3 was also simulated to demonstrate the topology's potential for high torque densities, and even higher torque densities can be reached at larger scale designs. © 2015 IEEE.

关键词： Finite element method

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A work domain analysis for network management

A work domain analysis for network management

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Proceedings of the XIVth Triennial Congress of the International Ergonomics Association and 44th Annual Meeting of the Human Factors and Ergonomics Association, 'Ergonomics for the New Millennnium'

作者： Burns, Catherine M. Barsalou, Ed Handler, Cynthia Kuo, Johnson Harrigan, Kevin Advanced Interface Design Lab Dept. of Systems Design Engineering University of Waterloo Canada Department of Computer Science University of Waterloo Canada

computer networks are pervasive and critical to the operation of today's businesses. While most of us take computer networks for granted, network managers who must configure, operate, and fix faults in computer networks face a daunting task that becomes more complex everyday. Ecological interface design has been shown to be a promising approach for complex systems such as power plants or petrochemical systems. computer networks are a very different work domain characterized by rapid technological change, extreme decentralization, and the existence of "soft" components. This paper presents the first work domain analysis of this new domain creating an abstraction hierarchy for general signal transfer systems and general computing networks. It shows how the abstraction hierarchy can be applied to this new domain and presents the initial work on an ecological interface design for network management.

关键词： computer networks

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IP traffic monitoring: An overview and future considerations 2nd

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2nd IEEE Pacific-Rim Conference on Multimedia, IEEE-PCM 2001

作者： Wei, Dong Ansari, Nirwan Advanced Networking Lab Department of Electrical and Computer Engineering New Jersey Institute of Technology University Heights NewarkNJ07102 United States

ISBN: (纸本)3540426809

An overview on emerging IP traffic monitoring is presented. Important parameters to characterize the traffic, network and QoS, are discussed. The infrastructure and methodology to measure those parameters directly or to compute them based on other measurements are described. We also present a discourse on coping with the challenge of new transport architectures and technologies. In summary, a framework of IP traffic monitoring is presented. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Parameter estimation

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Multi-Task Learning for Alzheimer's Disease Diagnosis and Mini-Mental State Examination Score Prediction

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Big Data Mining and Analytics 2024年第3期7卷 828-842页

作者： Jin Liu Xu Tian Hanhe Lin Hong-Dong Li Yi Pan Hunan Provincial Key Lab on Bioinformatics School of Computer Science and EngineeringCentral South UniversityChangsha 410083China Xinjiang Engineering Research Center of Big Data and Intelligent Software School of SoftwareXinjiang UniversityUrumqi 830091China School of Science and Engineering University of DundeeDundeeDD14HNUK Faculty of Computer Science and Control Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Accurately diagnosing Alzheimer's disease is essential for improving elderly ***,accurate prediction of the mini-mental state examination score also can measure cognition impairment and track the progression of Alzheimer's ***,most of the existing methods perform Alzheimer's disease diagnosis and mini-mental state examination score prediction separately and ignore the relation between these two *** address this challenging problem,we propose a novel multi-task learning method,which uses feature interaction to explore the relationship between Alzheimer's disease diagnosis and minimental state examination score *** our proposed method,features from each task branch are firstly decoupled into candidate and non-candidate parts for ***,we propose feature sharing module to obtain shared features from candidate features and return shared features to task branches,which can promote the learning of each *** validate the effectiveness of our proposed method on multiple *** Alzheimer's disease neuroimaging initiative 1 dataset,the accuracy in diagnosis task and the root mean squared error in prediction task of our proposed method is 87.86%and 2.5,*** results show that our proposed method outperforms most state-of-the-art *** proposed method enables accurate Alzheimer's disease diagnosis and mini-mental state examination score ***,it can be used as a reference for the clinical diagnosis of Alzheimer's disease,and can also help doctors and patients track disease progression in a timely manner.

关键词： multi-task learning Alzheimer's disease diagnosis mini-mental state examination score prediction

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Investigating the Use of Ray Tracing for Signal-Level Radar Simulation in Space Surveillance 5

Investigating the Use of Ray Tracing for Signal-Level Radar ...

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5th International Conference on Information Communication and Signal Processing, ICICSP 2022

作者： Martin, Mogamat Yaaseen Winberg, Simon Gaffar, Yunus Abdul MacLeod, David University of Cape Town Department of Electrical Engineering Cape Town South Africa Advanced Computer Engineering Lab Centre for High Performance Computing Cape Town South Africa

ISBN: (纸本)9781665485890

The growing number of objects in the Low Earth Orbit is becoming increasingly concerning to astronomers and space missions - particularly due to the limitations in tracking accuracy due to the availability and placements of surveillance sensors. This paper connects to this issue, presenting the development of an open-source, ray-traced, signal-level pulsed radar simulator for use in exploring and planning space monitoring solutions without using real-time data feeds. The simulator was also developed around the use of the NVIDIA® OptiX™ engine to accommodate its ray-tracing features and accelerate performance. This was designed to aid astronomers and researchers in space situational awareness applications through the simulation of radar designs for orbital surveillance experiments. The developed tool was also compared against a more streamlined application that used point-model approximations for quick-look simulations, and the trade-offs between both simulators were evaluated. While the use of ray tracing resulted in significant speed costs, it was found that the algorithm also introduced more realistic results relative to point-model simulations - providing various advantages in scenarios involving shadowing and multiscatter. © 2022 IEEE.

关键词： Ray tracing

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