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Grid Security Interoperation between CGSP and VEGA

Grid Security Interoperation between CGSP and VEGA

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international conference on Future Generation communication and networking (FGCN)

作者： Deqing Zou Hai Jin Xueguang Chen Zongfen Han Cluster and Grid Computing Laboratory Services Computing Technology and System Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9780769530482;0769530486

Grid computing emerges as an effective technology to couple geographically distributed resources and solve large-scale computational problems in wide area networks. There are several popular grid platforms, such as UNICORE and Globus Toolkit. Many famous grid projects are constructed with these platforms, each of which manages different distributed resources. In order to aggregate resources managed by different grid platforms, it is necessary to implement the interoperation among these grid platforms. Security interoperation is one of key issues for the interoperation. CGSP (ChinaGrid Support Platform) and VEGA are two popular grid platforms in China. To achieve security interoperation between these two platforms, four mapping policies, including user-user mapping, user-agora mapping, role-user mapping, role-agora mapping, are proposed in this paper. The security interoperation process is proposed based on SAML specification and the mapping policies. We also analyze the flexibility of mapping policies and the security of the interoperation process.

关键词： Security Resource management Grid computing Authentication Large-scale systems Computer networks Distributed computing Wide area networks Web services Middleware

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Optimization of Clustering, and QOS Routing in Wireless Multicast Ad-Hoc Networks with Topology control

Optimization of Clustering, and QOS Routing in Wireless Mult...

引用

Smart Generation computing, communication and networking (SMART GENCON), international conference on

作者： Sukhman Ghumman Centre for Interdisciplinary Research in Business and Technology Chitkara University Institute of Engineering and Technology Chitkara University Punjab India

In this study, we provide a novel approach to multicast wireless ad hoc network routing with cluster QoS optimization. The notion of topology compression is used to quantify the effect of multicast heterogeneity on scheduling by use of a compressed multiplex topology matrix. Topology matrices are defined by first identifying all feasible multicast pathways, including network-coded paths. In a conflict-free environment provided by careful scheduling, a selection of these pathways with optimal rates is selected to optimize feasible throughput and capacity per sum of transmission powers along the route. As a result, this optimization yields not one but two improvements: one in the form of performance enhancement due to planning on a condensed network topology, and another in the form of mixed route selection optimizations that strike a fine balance between multicast variety and network coding. As an example, we provide the numerical findings for a basic wireless butterfly network. If throughput is the only metric of importance, then either a network coded design or simple routing may be optimal, depending on the specifics of the system. However, a collection of simple routing pathways is optimal if throughput is prioritized above power consumption. In this study, we examine the problem of energy-efficient topology management in ad hoc wireless connections. We create an Energy Effective Topology controller method that incorporates a pertinent QoS Routing system in order to identify a network architecture that has maximum network lifespan fulfill QoS criteria, which includes traffic needs, hop bound, and bandwidth. The combined analytical along with numerical findings show that, when compared to algorithms that are solely concerned with reducing energy consumption, this optimal method can achieve the optimum network lifespan, which is a genuine period of time and more important and reasonable than merely reducing energy consumption.

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An Efficient control Method of Multi-copy Routing in DTN

An Efficient Control Method of Multi-copy Routing in DTN

引用

international conference on Networks Security, Wireless communications and Trusted computing, NSWCTC

作者： Hong Bian Haizheng Yu School of Maths-physics and Information Sciences Xinjiang Normal University Urumqi P.R.China Key Laboratory of Computer Network and Information Security Xidian University Xi'an P.R.China

ISBN: (纸本)9781424465972;9780769540115

Delay/Disruption Tolerant Networks (DTN) often use multi-copy routing protocols to improve the efficiency that the messages are delivered successfully, but the network load is increased by vast message copies. A new scheme is presented using threshold method on multi-copy routing protocol. The all nodes are added an encounter counter in the message transferred. If the counter reaches the set threshold of counter, the node removes the message copy. With the proper threshold, the message copies decrease obviously and are removed completely in the end, at the same time the successful delivery efficiency is still the same as the Epidemic Routing. In some environments we can abandon TTL or anti-packet approach about redundancy removing of message copies. In simulation, we compare variation trend of the message copies among vary threshold in two scenes.

关键词： Disruption tolerant networking Routing protocols Counting circuits Delay Information security Computer networks Redundancy Computer security Wireless communication communication system control

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Camera based face tracking for enhancing surgical teamwork training with non-verbal communication

Camera based face tracking for enhancing surgical teamwork t...

引用

international conference on Image and Vision computing New Zealand, IVCNZ

作者： S. Marks J. Windsor B. Wunsche Department of Computer Science University of Auckland New Zealand Department of Surgery University of Auckland New Zealand

In recent years, the increased use of simulation for the training of surgical skills has improved the medical curriculum and the overall patient outcome. advances in hardware and simulation techniques have resulted in many commercial applications for training technical skills. However, most of these simulators are extremely expensive and do not consider non-technical skills like teamwork and communication. This is a major drawback since recent research suggests that a a large percentage of mistakes in clinical settings are due to communication problems. In addition training teamwork can also improve the efficiency of a surgical team and as such reduce costs and workload. We present an inexpensive camera-based system for the acquisition of aspects of non-verbal communication of users participating in virtual environment-based teamwork simulations. This data can be used for the enhancement of virtual-environment-based simulations to increase the realism and effectiveness of team communication.

关键词： Cameras Surgery Teamwork Medical simulation Computational modeling communication system control Virtual environment Military computing Network servers Engines

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An Improved Designated-Verifier Proxy Signature Scheme

An Improved Designated-Verifier Proxy Signature Scheme

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international conference on networking, Architecture, and Storage (NAS)

作者： Jianhong Zhang College of Science North-China University of Technology Beijing China Institute of Software of Chinese Academy of Sciences State Key Laboratory of Information Security Beijing China

As a special signature, proxy signature allows a entity called original signer to delegate his signing capability to another entity to produce signature on behalf of him. By combining the ideas of proxy signatures and designated-verifier signatures, *** ***. proposed a strong designated-verifier proxy signature scheme (for short DVP) and claimed that the security of their scheme was based on the computational Diffie- Hellman assumption. Unfortunately, in the paper, we give security analysis of Wang ***'s strong designated-verifier proxy signature scheme and show that their scheme is forgeable. Namely, an adversary can forge a DVP signature on arbitrary message m without the knowledge of the proxy secret key x P or the designated verifier's secret key x C - At the same time, we give two attacks on the Strong designated-verifier proxy signature scheme. Finally, we give an improved scheme to overcome the above forgery attacks, and show the scheme to be secure in random oracle model .

关键词： Voltage control Educational institutions Laboratories Information security Forgery Digital signatures Distributed computing Grid computing Mobile agents Mobile communication

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Time-Sensitive Semantic communication Using Dynamic Spiking Neural Networks

Time-Sensitive Semantic Communication Using Dynamic Spiking ...

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Memristive computing and Applications (ICMCA), IEEE international conference on

作者： Daojun Liang Bingzheng Zhang Dongfeng Yuan Shenzhen Research Institute of Shandong University Shenzhen China School of Information Science and Engineering Shandong University Qingdao China Shandong Key Laboratory of Wireless Mobile Communication Technologies Jinan China School of Control Science and Engineering Shandong University Jinan China School of Qilu Transportation Shandong University Jinan China

Semantic communication aims to extract and trans-mit the semantic information of objects to greatly reduce the transmission of redundant information. This means that termi-nals need to deploy large and deep models to extract semantic features, which greatly exacerbates the computational overhead on the terminal. This prevents many time-sensitive scenarios, such as industrial IoT and vehicular networking, from achieving satisfactory QoS. To alleviate this issue, we propose a Time-Sensitive Semantic communication paradigm (TSSC) that fulfills the latency requirements of the tasks by balancing the computational and communication overhead at the terminal. To achieve this purpose, we design a Dynamic Spiking Neural Networks (DSNNs). DSNNs can dynamically adjust the timing of semantic feature acquisition to meet the task's latency constraints. And DSNNs can be applied directly to digital channels, thus avoiding the quantization process. Furthermore, the leaky integrate and fire characteristics of DSNNs enable hardware acceleration on memristors to further reduce computing latency. Experiments demonstrate that DSNNs can be well adapted to TSSC tasks, which can achieve high accuracy in semantic communication tasks while maintaining low latency.

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Moving Objects Databases In Space Applications

Moving Objects Databases In Space Applications

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international conference on Recent advances in Space Technologies (RAST)

作者： Perihan Kilimci Oya Kalipsiz Computer Engineering Department Yesilyurt Turkish Air Force Academy Istanbul Turkey Head of Computer Engineering Department Yildiz Technical University Istanbul Turkey

Determining moving objects for example spacecraft and visualizing them in defense simulation rapidly and correctly are important research issues in national defense. In US military C4ISR systems -command, control, communications, computers, intelligence, surveillance and reconnaissance- produce objects distance by layers of systems that combine surveillance with weapons control In military command and control situations the technical requirements of surveillance and reconnaissance involve vast systems and architectures. In this work, moving objects description of geometry over time is concerned in such a military command Moving objects are basically geometries changing over time; hence, this is accomplished in moving object databases which deal with spatial and temporal databases. Spatial databases concern descriptions of geometry in databases and temporal databases address the development of data over time. In specific time or time interval, moving object or objects can be queried in moving object databases efficiently. Moving objects capabilities are researched and an example application is described in this work.

关键词： Spatial databases Military computing Surveillance Geometry Military communication communication system control control systems Visual databases Application software Space vehicles

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NLP-Based Microblogging Post Filtering for Disaster-Related Content

NLP-Based Microblogging Post Filtering for Disaster-Related ...

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advances in Data Engineering and Intelligent computing Systems (ADICS), international conference on

作者： Ajay Singh B N P Anila Krishna Lalithya ThangaKumar J Department of CSE Hindustan Institute of Technology and Science Chennai India

ISBN: (数字)9798350364828

ISBN: (纸本)9798350364835

During times of tragedy, when the usual channels for emergency communication are overwhelmed, people are forced to utilize any means at their disposal in order to reach out and seek assistance from others. In case of a disaster, it's crucial to precisely gather and share information to reduce the impact. Twitter has evolved as a medium, to share information during disasters and the widespread usage of cellphones enables people to share information about crises in real time. As a result, lots of organizations such as rescue groups and media organizations are more intrigued, in monitoring Twitter. However, determining whether a person's statements truly indicate the occurrence of a disaster is not always straightforward. The study explores how advanced natural language processing techniques, Transformer models are used to detect and classify emergency messages, in tweets related to disasters. Our method achieves a 96% accuracy showcasing its reliability and effectiveness, in real world scenarios.

关键词： Training Social networking (online) Disasters Blogs Organizations Disaster management Transformers

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A hybrid transformation with a filter for advanced video coding

A hybrid transformation with a filter for advanced video cod...

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international conference on computing, communication and networking, ICCCN

作者： M. Ezhilarasan P. Thambidurai G. Harish M. Muthuraman R. Arulsezhian A. Arun V. Vijay Anand S. Dhinesh Kumar P. Navaneetha Krishnan Department of Computer Science & Engineering and Information Technology Pondicherry Engineering College Puducherry India

H.264/AVC is the most recent video coding standard developed by the ITU-T Video Coding Experts Group and the ISO/IEC Moving Picture Experts Group. The main goal of the H.264/AVC standard has been to provide enhanced compression performance and provision for network friendly video representation addressing conversational and non-conversational applications. This paper mainly concentrates on two modules of the existing advanced video coding standard. The H.264 in-loop deblocking filter is one of the several complex techniques that have realized this superior coding quality. The deblocking filter is a computationally and data intensive tool resulting in increased execution time of both the encoding and decoding processes. The existing filter of the H.264 video codec is not capable of smoothing the video thereby creating an unacceptable blurring phenomenon. In this paper, a new deblocking filter has been used to overcome this drawback. It has a non-linear operator that is able to effectively attenuate the noise that corrupts the quality of the video. The existing system uses discrete cosine transformation which is proved to have several drawbacks. Hence a hybridization method has been incorporated in transformation module of video encoder. This paper presents an hybridization in the transformation module by incorporating DCT as transformation technique for inter frames and a combination of wavelet filters for intra frames of video sequence. This proposal is also applied in the recent H.264/AVC standard and is proved to have better results.

关键词： Filters Video coding Automatic voltage control IEC standards ISO standards Standards development MPEG standards Video compression Encoding Decoding

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Inter-networking security

Inter-networking security

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international conference on communication Systems

作者： G.W. Wang Inf. Technol. Inst. Nat. Comput. Board Singapore

Inter-networking security in a multi-vendor heterogeneous network environment is a critical problem for IT professionals. This paper analyzes the security threats in a multi-vendor network environment and proposes a network security architecture for building a secure distributed network. It also discusses various information security packages including crypto-systems, network authentication, and security control software. The paper attempts to provide readers a systematic way for securing inter-network environment.< >

关键词： Information security Computer security Cryptography Authentication Protection National security Computer crime Distributed computing communication system security Data security

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