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检索条件"任意字段=IEEE Conference on Local Computer Networks"

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Sensor Placement Based on an Improved Genetic Algorithm for Connected Confident Information Coverage in an Area with Obstacles 42

Sensor Placement Based on an Improved Genetic Algorithm for ...

引用

ieee 42nd conference on local computer networks (ieee LCN)

作者： Dai, Lu Wang, Bang Huazhong Univ Sci & Technol Sch Elect Informat & Commun Wuhan Hubei Peoples R China

ISBN: (纸本)9781509065226

This paper studies how to place the least number of sensor nodes to ensure confident information coverage in an area with obstacles, while maintaining the connectivity of the placed nodes. For this constrained optimization problem, we propose a sensor placement scheme based on an improved genetic algorithm with our new problem-specific operations, including the Delaunay triangulation-based population initialization, the chromosome correction operation with new gene insertion and redundant gene removal to produce a valid chromosome ensuring both coverage and connectivity, the chromosome mirror-crossover operation to enable the production of better offsprings. Simulation results show that the proposed algorithm can find better placement schemes in terms of much fewer deployed nodes, compared with the peer algorithms.

关键词： Sensor placement confident information coverage network connectivity gene algorithms wireless sensor networks

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Low-Dose CT Image Denoising Using Cycle-Consistent Adversarial networks

Low-Dose CT Image Denoising Using Cycle-Consistent Adversari...

引用

ieee Symposium on Nuclear Science (NSS/MIC)

作者： Zeheng Li Junzhou Huang Lifeng Yu Yujie Chi Mingwu Jin Computer Science and Engineering Department University of Texas at Arlington Arlington TX USA Department of Radiology Mayo Clinic Rochester MN USA Physics Department University of Texas at Arlington Arlington TX USA

ISBN: (数字)9781728141640

ISBN: (纸本)9781728141657

Computed tomography (CT) has been widely used in modern medical diagnosis and treatment. However, ionizing radiation of CT for a large population of patients becomes a concern. Low-dose CT is actively pursued to reduce harmful radiation, but faces challenges of elevated noise in images. To address this problem and improve low-dose CT image quality, we develop an image-domain denoising method based on cycle-consistent adversarial networks (CycleGAN). Different from previous deep learning based denoising methods, CycleGAN can learn data distribution of organ structures from unpaired full-dose and low-dose images, i.e. there is no one-to-one correspondence between full-dose and low-dose images. This is an important development of learning-based methods for low-dose CT since it enables the model growth using previously acquired full-dose images and later acquired low-dose images from different patients. As a proof-of-concept study, we used the NIH-AAPM-Mayo Clinic Low Dose CT Grand Challenge data to test our CycleGAN denoising method. The results show that the proposed method not only achieves better peak signal-to-noise ratio (PSNR) for quarter-dose images than non-local mean and dictionary learning denoising methods, but also preserves more details reflected by images and structural similarity index (SSIM). Our investigation also reveals that a larger sample size leads to a better denoising performance for CycleGAN.

关键词： Computed tomography Training Noise reduction Gallium nitride Image denoising Machine learning PSNR

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Distributed System for Detecting the Malware in LAN

Distributed System for Detecting the Malware in LAN

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International Scientific and Technical conference on computer Science and Information Technologies

作者： George Markowsky Oleg Savenko Anatoliy Sachenko Department of Computer Science Missouri University of Science and Technology Rolla USA Department of Computer Engineering and System Programming Khmelnytsky National University Khmelnytsky Ukraine Department of Informatics Kazimierz Pulaski University of Technology and Humanities in Radom Radom Poland

The paper proposes the architecture of distributed multilevel detection system of malicious software in local area networks. Its feature is the synthesis of its requirements of distribution, decentralization, multilevel. This allows you to use it autonomously. In addition, the feature of autonomous program modules of the system is the same organization, which allows the exchange of knowledge in the middle of the system, which, unlike the known systems, allows you to use the knowledge gained by separate parts of the system in other parts. The developed system allows to fill it with subsystems of detection of various types of malicious software in local area networks.

关键词： Architecture Distributed system Malware local area networks

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Repair Scheme for Wireless Coded Storage networks 42

Repair Scheme for Wireless Coded Storage Networks

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ieee 42nd conference on local computer networks (ieee LCN)

作者： Zhan, Cheng Wen, Zhe Southwest Univ Sch Comp & Informat Sci Chongqing 400715 Peoples R China

ISBN: (纸本)9781509065226

In wireless coded cache network, data contents are cached in a number of mobile devices using an erasure correcting code, and a user retrieves content from other mobile devices using device-to-device communication. In this paper, we consider the repair problem when multiple devices that cache data contents fail or leave the network. By exploiting the wireless broadcast nature, we formulate the repair problem over the broadcast channels using an integer linear programming formulation, aiming at minimizing the number of necessary broadcast transmissions. We also study the construction of repair codes and propose a decentralized repair coding method. Simulation results show that the performance using our method outperforms the basic cooperative repair scheme for wired distributed storage systems.

关键词： Maintenance engineering Wireless communication Device-to-device communication Mobile handsets Mobile communication Encoding Mobile computing

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Utility-Gradient Implicit Cache Coordination Policy for Information-Centric Ad-hoc Vehicular networks 42

Utility-Gradient Implicit Cache Coordination Policy for Info...

引用

ieee 42nd conference on local computer networks (ieee LCN)

作者： Modesto, Felipe Boukerche, Azzedine Univ Ottawa PARADISE Res Lab Ottawa ON Canada

ISBN: (纸本)9781509065226

Increased Caching Capability is one of the main benefits of Information-Centric Networking and a necessity for highly mobile ad-hoc networks such as VANETs. Hence, it is crucial to efficiently store items to improve resource utilization, increasing cache efficiency, reducing network load. In this paper, we propose a cache content insertion policy, UG-Cache, for ICN-VANETs. In UG-Cache, cache insertion decisions are made based on recommendations from content sender dependent on request frequency and cache distance. Numerical results denote the benefits of increased control over cache variety via application of UG-Cache. Simulation results reveal increased delivery rates and reduced average hop count of content delivery of UG-Cache over other schemes. UG-Cache also achieves higher cache hit ratio than other on-demand caching strategies.

关键词： Vehicular Ad-hoc networks Vehicular networks Information-Centric networks ICN Caching In-Network Caching Distributed Cache Implicit Cache Coordination

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Optimal and Cost Efficient Algorithm for Virtual CDN Orchestration 42

Optimal and Cost Efficient Algorithm for Virtual CDN Orchest...

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ieee 42nd conference on local computer networks (ieee LCN)

作者： Khedher, Hatem Abd-Elrahman, Emad Afifi, Hossam Marot, Michel Telecom SudParis IMT Saclay France NTI Comp & Syst Dept Cairo Egypt

ISBN: (纸本)9781509065226

Virtual Content Delivery Network (vCDN) orchestration is necessary to optimize the use of resources and improve the performance of the overall SDN/NFV-based CDN function in terms of network operator cost reduction and high streaming quality. It requires intelligent and enticed joint SDN/NFV orchestration algorithm due to the evident huge amount of traffic to be delivered to end customers of the network. In this paper, a global vCDN architecture and an exact approach for finding the optimal path orchestration(s) and vCDN component instantiation(s) (OCPA) are proposed. Moreover, several scenarios are considered to quantify the OCPA behavior and to compare its efficiency in terms of caching and streaming cost, orchestration time, vCDN replication number, and other cost factors. Then, it is implemented and evaluated under different deployment flavors. Several scenarios are considered to study the algorithm's behavior and to quantify the impact of both network and system parameters.

关键词： Servers computer architecture Optimization Software Virtual machining Virtualization Streaming media

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An Algorithm for Alleviating the Effect of Hotspot on Throughput in Wireless Sensor networks 42

An Algorithm for Alleviating the Effect of Hotspot on Throug...

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ieee 42nd conference on local computer networks (ieee LCN)

作者： Rehman, Abdul Din, Sadia Paul, Anand Ahmad, Waqar Kyungpook Natl Univ Sch Comp Sci & Engn Daegu South Korea Natl Text Univ Faisalabad Pakistan

ISBN: (纸本)9781509065837

Multilayer Clustered Designing Algorithm is exploited to present MCDA - Hot Spot algorithm;a technique to increase the network throughput by alleviating the impact of hotspot issue on network lifetime. The network nodes in the hot spot region are in a flat layer form in contrast to rest of the network nodes that are grouped into clusters. This design substantially helps in achieving goal above. This claim is proved by making its simulation-based comparison with other competing algorithms on various performance evaluation parameters.

关键词： Hotspot MCDA Cluster Throughput Energy

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Scheduling Methods to Improve the Performance of Heterogeneous Periodic Flows in Wireless Sensor networks 42

Scheduling Methods to Improve the Performance of Heterogeneo...

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ieee 42nd conference on local computer networks (ieee LCN)

作者： Anh Huy Nguyen Tanigawa, Yosuke Tode, Hideki Osaka Prefecture Univ Dept Comp Sci & Intelligent Syst Sakai Osaka 5998531 Japan

ISBN: (纸本)9781509065226

Recently, the demand for wireless networks to treat periodic traffic is increasing, which includes healthcare wireless sensor networks. This tendency causes the problem of continual packet collisions among different periodic flows. In this paper, we propose a new formula for predicting whether two heterogeneous periodical flows from different source nodes have overlapping packet transfer durations. From this formula, we propose a transfer scheduling method that shifts the packet generation phase (timing) to avoid future collisions. This method adopts naive random access control, like DCF, for the MAC layer process. In addition, source nodes do not require significant computational power, because only the sink intensively schedules the timing and informs them to the corresponding source. Therefore, compared to existing methods in which each source node completely schedules the timing of creating packets based on time division multiple access (TDMA), our method requires less functional expansion, complexity, and computational power. Finally, we demonstrate the effectiveness of our method through computer simulations.

关键词： wireless sensor network collision avoidance periodic flow scheduling

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Distributed Network Mobility Management Scheme for Network Mobility 4

Distributed Network Mobility Management Scheme for Network M...

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4th International conference on computer and Information Sciences, ICCOINS 2018

作者： Jung, Low Tang Ali Wagan, Asif Computer and Information Sciences Department Universiti Teknologi PETRONAS Seri Iskandar Perak Darul Ridzuan32610 Malaysia

ISBN: (纸本)9781538647431

The exponential growth in the mobile internet traffic is creating challenges for the present service providers to provide quality network mobility management to fulfil the user bandwidth demand. The network mobility management scheme is therefore responsible to provide seamless connection between heterogeneous and homogeneous domains for mobile networks and mobile nodes. Basically, the network mobility management technique uses the similar IP mobility procedure as in the MIPv6. However, these NEMO IP mobility solutions are lacking in good QoS especially in terms of packet delivery cost and end-to-end delay. Moreover, the traversal tunnel between the active nodes are creating additional tunnel cost. Meanwhile, the PMIPv6 scheme is suffering from the single node failure and the packets drop issues. The research community has introduced a new Distributed Mobility Management (DMM) scheme as a promising IP mobility solution to address mobility issues in the conventional IP mobility schemes. We are proposing a new DNMM scheme in this paper that aims to reduce the overall packet delivery cost with the aids of Distributed local Fix Router (DLFRs) and Regional Access Router (RAR). Our results analysis is focusing on the Packet Delivery Cost (PDC) and Location Update Cost (LUC). The results obtained show that the proposed scheme is more promising than other known schemes. © 2018 ieee.

关键词： Quality of service

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SDN-based Attack Detection in Wireless local Area networks

SDN-based Attack Detection in Wireless Local Area Networks

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ieee conference on Network Softwarization (NetSoft)

作者： Radoslaw Cwalinski Hartmut Koenig Computer Networks Group Brandenburg University of Technology Cottbus

ISBN: (纸本)9781538646342

In this paper we propose an novel approach to secure enterprise Wireless local Area networks (WLANs) by leveraging the Software-defined Networking (SDN) paradigm to detect and mitigate attack attempts in WLANs. We extend our SDN platform from [1] to implement a client localization mechanism that exploits information from the physical and MAC layers offered by current wireless chipsets to localize transmitting clients. Based on location information, we create a “virtual perimeter” to prevent WLAN access for clients from outside of the defined area. We further introduce a single-channel WLAN model as a possible solution optimization. Our evaluation shows that the proposed solution succeeds in identifying WLAN Denial-of-Service attacks, such as ieee 802.11 deauthentication.

关键词： Wireless LAN ieee 802.11 Standard computer architecture Encryption Measurement Hardware

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