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2019 International Conference on Industrial Control Network and system engineering research, ICNSEr 2019

作者： Miao, Liren Hu, Hongchao Cheng, Guozhen National Digital Switching System Engineering R and D Center Zhengzhou Henan China

ISBN: (纸本)9781450366274

IP address dynamic protection techniques will introduce additional overhead. Therefore, the performance of normal network transmission decreases. In order to deal with this problem, we design and implement a dynamic IP address defense system accelerated by Vector Packet Processing (VPP). Using VPP's flexibility and extensibility, we change the packet's IP in the gateway. We derive the dynamic IP strategy profiles based on the optimization analysis, and design the fast and slow forwarding logic based on VPP's graph processing to reduce the overhead. The experimental results show that the system can hide the real IP address and enhance the system's data processing ability effectively. It can also control the potential detection attack hit rate below 5%, which significantly improved compared with existing technologies. © 2019 Association for Computing Machinery.

关键词： Gateways (computer networks)

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Context-Based Synthetic data for Logo recognition

Context-Based Synthetic Data for Logo Recognition

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2019 International Conference on Artificial Intelligence and Advanced Manufacturing, AIAM 2019

作者： Jiang, Yuchao Gao, Chao Ji, Lixin Wu, Yancheng National Digital Switching System Engineering and Technological R and D Center Zhengzhou China

ISBN: (纸本)9781728146911

In order to solve the problem of sparse training samples in logo recognition task, a multi-type context-based logo data synthesis algorithm is proposed. The algorithm comprehensively utilizes the local and full context of the logo object and the scene image to guide the synthesis of the logo image. The experimental results on the FlickrLogos-32 show that the proposed algorithm can greatly improve the performance of the logo recognition algorithm without relying on additional manual annotation, verify the validity of the synthesis algorithm, and further prove that multi-type context can improve the performance of the object recognition algorithm. © 2019 IEEE.

关键词： deep learning

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A Novel Preprocessing Methodology for dNN-Based Intrusion detection

A Novel Preprocessing Methodology for DNN-Based Intrusion De...

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International Conference on Computer and Communications (ICCC)

作者： Peng Chen Yunfei Guo Jianpeng Zhang Yawen Wang Hongchao Hu Information Engineering University Zhengzhou China National Digital Switching System Engineering & Technological R&D Center Zhengzhou China

ISBN: (数字)9781728186351

ISBN: (纸本)9781728186368

Intrusion detection system (IdS) plays a vital role in cybersecurity. One major challenge in state-of-the-art IdS is that the Advanced Persistent Threats (APTs) cannot be well detected. deep Neural Networks (dNNs) extract latent features of input data, which is considered to be able to capture intrinsic property of APTs, to detect APTs. However, dNN is not well used in APT detection. In this paper, a dNN model is utilized for intrusion detection and a novel method of preprocessing is proposed to improve the performance of the detection algorithms. We consider the statistical characteristics of training set to be the statistical characteristics of test set and detection set. Experiment results show that our preprocessing methodology achieves a better performance in terms of accuracy, recall and F1 Score than traditional preprocessing methods, which means a better detection for APTs.

关键词： Training Machine learning algorithms Neural networks Intrusion detection Feature extraction Throughput real-time systems

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Software-defined protocol independent parser based on FPGA 2019

Software-defined protocol independent parser based on FPGA

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2019 International Conference on Industrial Control Network and system engineering research, ICNSEr 2019

作者： Lixin, Miao Qingrang, Liu Xin, Wang National Digital Switching System Engineering R and D Center Zhengzhou Henan China

ISBN: (纸本)9781450366274

With the boom of information technology, heterogeneous networks with various functions emerge in endlessly, heterogeneous fusion network has become the inevitable trend of the development of the next generation network. To realize communication between heterogeneous networks, network forwarding equipment is essential. Traditional forwarding devices only support fixed protocol configuration and lack scalability, so they cannot support new network protocols. In view of this situation, this paper proposes a software defined protocol independent parser based on FPGA. The software defines the parsing process, giving the parser flexible and programmable features. It can analy multiple protocol packets and extract key information needed for protocol conversion without changing hardware devices. We implemented the parser through a high-performance FPGA platform and evaluated hardware resource overhead and performance. Experimental results show that our parser can perform protocol parsing operations that are protocol independent. Although the throughput is slightly lower than other parsers, there is less resource overhead. © 2019 Association for Computing Machinery.

关键词： Heterogeneous networks

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Application of improved feature pre-processing method in prevention and control of electricity charge risk

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International Journal of Performability engineering 2019年第9期15卷 2453-2461页

作者： Wu, Huaiguang Shi, Yongsheng Qian, Shenyi Tao, Hongwei Ma, Jiangtao Zhengzhou University of Light Industry Zhengzhou450001 China National Digital Switching System Engineering and Technological R and D Center Zhengzhou450001 China

With the increase in power data, past data processing technologies cannot meet the needs of rapid processing and intelligent analysis of massive data. In order to solve the problems of current performance bottleneck in the calculation of power big data and recover users' electricity tariff arrears in a timely manner, we use the technology of combining parallel computing with feature expansion to establish a feature expansion method based on Spark distributed computing (FESdC). According to the data generated by the proposed method, we use a parallel logistic regression model to predict the arrears probability of future electricity users, which can effectively prevent and resolve the risk of electricity tariff recovery (ETr). Compared with the data processing method for single process (dPSP), the proposed method not only increased the accuracy of prediction, but also improved the performance of processing data. © 2019 Totem Publisher, Inc. All rights reserved.

关键词： recovery

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Triple-Cladding Ytterbium doped Fiber for 12 kW Single Module

Triple-Cladding Ytterbium Doped Fiber for 12 kW Single Modul...

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Asia Communications and Photonics Conference and Exhibition (ACP)

作者： Yue Meng Zuying Xu Xudong Shi Yu Li Tianying Liu Can Li Xiao Yan Wei Zheng Heng Wang Jiangang Yu Zhiyong Zhao Ming Tang Optical fiber R&D center Everfoton Technologies Corp oration Limited State Key Laboratory of Optic al Fiber and Cable Manufactu re Technology Yangtze Optical Fibre and Cable Joint Stock Limited Company Wuhan 4 China Optical fiber R&D center Everfoton Technologies Corp oration Limited Wuhan China Wuhan National Lab for Optoelectronics (WNLO) & National Engineering Laboratory for Next Generation Internet Access System School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan China

High power continuous-wave ytterbium-doped fiber lasers have unique advantages such as high electro-optical efficiency, excellent beam quality and good thermal management, and are widely used in industrial materials processing and scientific research. However, multi-kW $(\geqslant$ 10kW) high-power fiber lasers has encountered numerous technology challenges in double-cladding fibers. In this work, we designed and fabricated a triple-cladding ytterbium doped fiber with large core diameter by using Modified Chemical Vapor deposition (MCVd) combined with all-gas-phase doping method. An excellent laser performance could be demonstrated for such a fiber with an output power of more than 10 kW and a slope efficiency of 82%, no Transverse Mode instability (TMI) is observed. Long-term laser stability at 12 kW-level was carried out in a master oscillator power amplifier (MOPA) laser system for 500 hours with power degradation less than 1%, meanwhile a stimulated raman scattering (SrS) suppression ratio that is larger than 45dB was obtained.

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Fused Tapered Fan-in/Fan-out device of 6-Mode 7-Core Fiber Based On OM3 Multimode Fiber

Fused Tapered Fan-in/Fan-out Device of 6-Mode 7-Core Fiber B...

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Asia Communications and Photonics Conference and Exhibition (ACP)

作者： Chen Yang Haoze du Yuanhui Shao Fengming Zhang Zhuyixiao Liu Senyu Zhang Zhiyong Zhao Ming Tang State Key Laboratory of Optical Fiber and Cable Manufacture Technology Yangtze Optical Fiber and Cable Joint Stock Limited Company (YOFC) R&D Center & Optics Valley Laboratory Wuhan China Wuhan National Lab for Optoelectronics (WNLO) & National Engineering Laboratory for Next Generation Internet Access System School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan China

Fused tapered Fan-in/Fan-out devices of few-mode multi-core fiber have received attentions in recent ten years. Most devices are based on special designed fibers which are called “bridge fiber”. A low insertion loss and low-cost Fan-in/Fan-out device using OM3 fiber as the bridge fiber is fabricated and demonstrated in this paper. The insertion losses of LPOl, LPlla, LPllb, and LP2la are less than 1dB, and the insertion loss of LP2lb and LP02 are 2.02dB and 2.2dB.

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dIN: A Bio-Inspired distributed Intelligence Networking 16th

DIN: A Bio-Inspired Distributed Intelligence Networking

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16th IFIP WG 10.3 International Conference on Network and Parallel Computing, NPC 2019

作者： Li, Yufeng du, Yankang Cao, Chenhong Qiu, Han School of Computer Engineering and Science Shanghai University Shanghai200023 China National Digital Switching System Engineering and Technology R&D Center Zhengzhou450002 China

ISBN: (纸本)9783030307080

Software-defined Networking (SdN) is a promising method to simplify network management and facilitate network evolution. However, SdN is a logically centralized technology with global network-wide view. It faces the problem of scalability and reliability. In this paper, we propose a novel method termed as distributed Intelligence Networking (dIN). dIN optimizes network management based on distributed coordination of multiple forwarding nodes like the coordination in bird flocking motion, it is a fully physically and logically distributed structure based on neighbor network-wide view. This architecture naturally has the advantage of scalability and reliability. © 2019, IFIP International Federation for Information Processing.

关键词： Software defined networking

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Effect of Surface Activation on the Corrosion resistance of a MAO/Ni-P Composite Coating on LZ91 Magnesium Alloy

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Journal of the Taiwan Institute of Chemical Engineers 2023年第1期147卷

作者： Chen, Chi-An Lee, Jeou-Long Jian, Shun-Yi Lee, Chia-Yu Ger, Ming-der Combination Medical Device Technology Division Medical Devices R&D Service Department Metal Industries Research & Development Centre Kaohsiung802 Taiwan Department of Chemical and Materials Engineering Lung Hwa University of Science and Technology Taoyuan330 Taiwan Department of Material Engineering Ming Chi University of Technology New Taipei City Taiwan Center for Plasma and Thin Film Technologies Ming Chi University of Technology New Taipei Taiwan Graduate School of Defense Science Chung Cheng Institute of Technology National Defense University Taoyuan Taiwan Department of Chemical & Materials Engineering Chung Cheng Institute of Technology National Defense University Taoyuan Taiwan System Engineering and Technology Program National Chiao Tung University Hsin-Chu Taiwan

Background: LZ91 Magnesium alloy with a dual-phase structure has improved mechanical properties and a low density of about 1.48 g/cm3 but their limited resistance to corrosion limits their application. Therefore, it is a great challenge to increase the stability of LZ91 alloys under corrosive factors and environments. Methods: This study uses micro-arc oxidation (MAO) and an electroless nickel-phosphorus (Ni-P) plated composite film to increase the corrosion resistance of LZ91 magnesium alloy. Before electroless Ni-P plating, the MAO layers are activated by palladium catalysts at different pH values to produce composite coatings. SEM, EdS and Image J are used to determine the surface properties and elemental composition of the samples. The corrosion resistance is measured using a potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS) in 3.5 wt.% NaCl solution. Findings: The results show that the MAO coating is activated by an acid catalyst and the surface is obviously corroded. The electroless Ni-P plating grows into the MAO coating and the substrate corrodes. Therefore, corrosive medium (chloride ion) easily enter to the substrate and pitting corrosion occurred. On the contrary, activation by a neutral catalyst (pH=7) maintains the original structure of the MAO coating and provides a good bonding interface for the Ni-P coating. Form the potentiodynamic analysis can be finds that the corrosion potential for the neutral catalyst treated sample is -0.35V and the corrosion current density value is 1.77×10−6 A/cm2, so the corrosion characteristic become better than the acid catalyst treated samples. In terms of the long-term resistance after 48 h, EIS analysis shows that the resistance value remains at about 7.6×104 Ω•cm2. A composite coating that is compact and with excellent resistance to corrosion resistance is produced, which provides better protection for LZ91 magnesium alloys. © 2023 Taiwan Institute of Chemical Engineers

关键词： Corrosion resistance

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dual-Polarized Microstrip Antenna with Cross Grid Structure radiating Towards the Edge of the Substrate in the d-Band

Dual-Polarized Microstrip Antenna with Cross Grid Structure ...

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European Conference on Antennas and Propagation, EuCAP

作者： ryosuke Hasaba Ken Takahashi Tomoki Abe Tomohiro Murata Yoichi Nakagawa Koji Takinami Hiroshi Taneda Takashi Tomura Issei Watanabe Engineering Division Panasonic Industry Co. Ltd. Yokohama Japan Development Center Panasonic System Networks R&D Lab. Co Kanazawa Japan Research & Development Div. Shinko Electric Industries Co. Ltd. Nagano Japan Department of Electrical and Electronic Engineering Institute of Science Tokyo Tokyo Japan Advanced ICT Research Institute National Institute of Information and Communications Technology Tokyo Japan

ISBN: (数字)9788831299107

ISBN: (纸本)9798350366327

This paper proposes a dual-polarized antenna for d-band applications, which radiates in the substrate end direction. The antenna's radiating elements and ground are formed using vias, via lands, and copper foil. The radiating element features a cross-grid design, which combines both cross and grid shapes. This allows for the adjustment of the resonant frequency for each polarization, even under manufacturing rule constraints. The characteristics and operation of a singleelement antenna were demonstrated through simulations. Subsequently, the gain of an 8-element array was compared between measured and calculated values, demonstrating the effectiveness of the proposed antenna.

关键词： Antenna measurements Shape resonant frequency Microstrip antennas directive antennas Gain measurement Manufacturing Microstrip Substrates Antenna arrays

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