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28th International Ocean and Polar engineering Conference, ISOPE 2018

作者： Wang, Shuangqiang Zhang, Guiyong Yan, Boqian Zhang, Zhiqian Zong, Zhi School of Naval Architecture Engineering Dalian University of Technology Liaoning Engineering Laboratory for Deep-Sea Floating Structures Dalian China State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Dalian China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration Shanghai China Institute of High Performance Computing A*STAR Singapore

ISBN: (纸本)9781880653876

A novel method of coupled SPH with smoothed point interpolation method (S-PIM) has been employed to simulate the 2-D problem of liquid sloshing with multiple flexible baffles. In this simulation, the exciting force enforces a rectangular tank to move in a horizontal direction periodically. And multiple baffles with different defamations and location arrangements have been investigated to present the complex mechanism of sloshing mitigation. Copyright © 2018 by the International Society of Offshore and Polar Engineers (ISOPE)

关键词： Interpolation

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Enhancing Traffic Performance of Scale-free Networks by Employing Hybrid-information-based Queuing Strategy

Enhancing Traffic Performance of Scale-free Networks by Empl...

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2018 International Conference on Mechanical,Electrical,Electronic engineering & Science(MEEES 2018)

作者： Yulin Lu Fenlin Liu State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou Science and Technology Institute

ISBN: (纸本)9781510868755

Traffic congestion problem has become a bottleneck restricting the development of modern transportation systems, and accordingly the networked traffic system has drawn lots of researcher's attention. To enhance transportation efficiency on scale-free networks, we proposed a hybridinformation-based(HIB) queuing strategy, where one packet's priority is related to its available transmission resource in the surplus path and current distance to destination. Numerical results show that the HIB queuing strategy perform much better than the traditional first-in-first-out(FIFO) queuing strategy in the congestion state, and the average travelling time, the rate of waiting time to travelling time Pwt and the packet arrived rate which can reflect transportation efficiency are improved remarkably. Our work should be valuable and helpful for research on networked traffic systems.

关键词： Scale-free network queuing strategy networked traffic system

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An Efficient Improved Model for Tor Anonymous Network

An Efficient Improved Model for Tor Anonymous Network

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2017 4th International Conference on engineering Technology and Application (ICETA 2017)

作者： Yitong Meng Yimin Liu Jinlong Fei Yuefei Zhu State Key Laboratory of Mathematical Engineering and Advanced Computing

In order to improve the transmission efficiency, security and anonymity of Tor anonymous communication system, this paper analyzes the efficiency of Tor anonymous system through research and analysis of the security and vulnerability of transmission mechanism, encryption rules and node distribution of Tor anonymous network system, and then proposes an efficient improved model EFTAN for Tor anonymous network, and finally obtains a network system that can improve the efficiency, security and anonymity of the anonymous communication.

关键词： Tor efficiency security anonymity vulnerability improved model

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Cross-Platform Embedded-System Dynamic Information Acquisition Method

Cross-Platform Embedded-System Dynamic Information Acquisiti...

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2017 2nd International Conference on Computer engineering,Information Science and Internet Technology(CII 2017)

作者： YISEN WANG JING JING JIANJING SHEN WEIYU DONG State Key Laboratory of Mathematical Engineering and Advanced Computing

With the widespread application of embedded devices,embedded software vulnerabilities and oriented attacks to embedded system are also *** being wellknown,the hardware architecture of the embedded devices is heterogeneous,and the software stacks on them are customizable and flexible as *** dynamic information extraction and analysis technologies have been successfully used for general platform in vulnerability mining,malicious code detection and so on,its usage on embedded system lags behind *** paper provides(1) a CrossPlatform-Dynamic Instrumentation Framework,which,by leveraging an extensible intermediate code module and a semantic constraint database,decouples the instrumentation plugins from underlying hardware and OS;(2) a set of instrumentation interfaces which may be implemented by plugins to extract runtime state of various code granularity;(3) ability of system semantic introspection to extract processes and modules information(system semantic views),by using system attribute description files and abstract state extraction *** with TEMU and DECAF,our method shows more advantages in performance of abstract state extraction,and reducing the time and memory overhead.

关键词： Cross-Platform Embedded-System Dynamic Information Acquisition Method

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VBD-MF:A Block Device to Monitor the File System of Virtual Machine

VBD-MF:A Block Device to Monitor the File System of Virtual ...

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2017 International Conference on Mathematics, Modelling and Simulation Technologies and Applications（MMSTA 2017)

作者： Rui LOU Lie-hui JIANG Yi-sen WANG State Key Laboratory of Mathematical Engineering and Advanced Computing

The virtual block device is the data carrier of virtual machine(VM) and user information,while the file system is the ultimate goal of many *** proposed a security device named virtual block device mapping to file(VBD-MF) that can translate block-level operations into file-level ones by building a mapping from blocks to ***-MF could provide an out-of-VM way to monitor the file system with no modification on the code of virtual machine monitor(VMM)and guest OS,and it also provided other security tools and methods with direct interface to operate the file *** implemented a prototype on Linux and *** evaluation shows that VBD-MF has a better capability of monitoring with some loss on performance of read and *** to the traditional monitoring of host-based file system,VBD-MF has a better hidden and safety property.

关键词： Virtualization Virtual block device File system monitoring File access control

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A Technique for Bytecode Decompilation of PLC Program

A Technique for Bytecode Decompilation of PLC Program

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2017 IEEE 第2届先进信息技术,电子与自动化控制国际会议(IAEAC 2017)

作者： Xuefeng LV Yaobin Xie Xiaodong Zhu Lu Ren State Key Laboratory of Mathematical Engineering and Advanced Computing

Program logical controllers(PLCs) are the kernel equipment of industrial control system(ICS) as they directly monitor and control industrial processes. Recently, ICS is suffering from various cyber th

ISBN: (纸本)9781467389808

关键词： Programmable logical controller Bytecode Decompilation Mapping rules address byte decompilation Programmable logic controllers Integrated circuits

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Intrusion Detection Algorithm Based on Convolutional Neural Network

Intrusion Detection Algorithm Based on Convolutional Neural ...

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2017 4th International Conference on engineering Technology and Application (ICETA 2017)

作者： Yuchen Liu Shengli Liu Xing Zhao State Key Laboratory of Mathematical Engineering and Advanced Computing

A periodic load balancing method is proposed according to the load imbalance of network server in a clustered system of high concurrency. It is divided into different load periods based on the load condition of server node. Corresponding load balancing strategy is adopted for each period that the strategy of fast select is used in the period of small load while the server node with stable response time is first adopted in the period of large load. Periodic load strategy avoids the load imbalance caused by the single load strategy. It can be known from the experimental comparison that the improved periodic load balancing strategy is superior to the load balancing strategy of weighted least connection.

关键词： intrusion detection system deep learning convolution neural network

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Route Intrusion Detection Based on Long Short Term Memory Recurrent Neural Network

Route Intrusion Detection Based on Long Short Term Memory Re...

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2017 2nd International Conference on Computer engineering,Information Science and Internet Technology(CII 2017)

作者： YUCHEN LIU SHENGLI LIU YANG WANG State Key Laboratory of Mathematical Engineering and Advanced Computing

With the rapid development and extensive use of the Internet,network security is the key point of the current research of computer *** router is the key interconnection equipment in the Internet system,and it is necessary to improve the security of the router *** routing protocol is used in the packet switching *** communication is implemented by each switching node in the network to forward data *** present,most of the router intrusion detection systems are based on the machine learning *** paper proposes a Long Short Term Memory(LSTM) architecture applied to the Recurrent Neural Network(RNN),and uses the KDD Cup 1999 data set to train the IDS *** performance testing,the ability to efficiently and accurately classify network traffic into attacks and normal capabilities.

关键词： Router Intrusion Detection Long Short Term Memory KDD99 dataset Recurrent Neural Network

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SDNGuardian: Secure your REST NBIs with API-grained permission checking system 12th

SDNGuardian: Secure your REST NBIs with API-grained permissi...

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12th EAI International Conference on Security and Privacy in Communication Networks, SecureComm 2016

作者： Ren, Kailei Wei, Qiang Wu, Zehui Wang, Qingxian State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450001 China China National Digital Switching System Engineering and Technological Research Center Zhengzhou450001 China

ISBN: (纸本)9783319596075

REST NBI (REST Northbound API) is the mainstream NBI implementation method of current SDN controllers, but none of them has achieved authorization management, which leads to serious privilege abuse problems. In this paper, we propose SDNGuardian, an API-grained permission checking method based SDN REST NBI security defense system that achieves API level REST NBI authorization and effectively solves the problem of privilege abuse. Comparing with current authorization enhanced SDN controllers, our system is able to defend against attacks via REST NBIs within the same permission group. © ICST Institute for Computer Sciences, Social Informatics and Telecommunications engineering 2017.

关键词： Computers

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Boosting Electrocatalytic Activity of 3d-Block Metal (Hydro)oxides by Ligand-Induced Conversion

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Angewandte Chemie 2021年第19期133卷

作者： Dr. Wenxian Liu Dong Zheng Dr. Tianqi Deng Dr. Qiaoli Chen Chongzhi Zhu Chengjie Pei Dr. Hai Li Dr. Fangfang Wu Dr. Wenhui Shi Dr. Shuo-Wang Yang Prof. Yihan Zhu Prof. Xiehong Cao College of Materials Science and Engineering State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology Center for Electron Microscopy Center for Membrane Separation and Water Science & Technology College of Chemical Engineering Zhejiang University of Technology 18 Chaowang Road Hangzhou Zhejiang 310014 P. R. China Institute of High Performance Computing Agency for Science Technology and Research 1 Fusionopolis Way #16-16 Connexis Singapore 138632 Singapore Key Laboratory of Flexible Electronics and Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 P. R. China

The 3d-transition-metal (hydro)oxides belong to a group of highly efficient, scalable and inexpensive electrocatalysts for widespread energy-related applications that feature easily tailorable crystal and electronic structures. We propose a general strategy to further boost their electrocatalytic activities by introducing organic ligands into the framework, considering that most 3d-metal (hydro)oxides usually exhibit quite strong binding with reaction intermediates and thus compromised activity due to the scaling relations. Involving weakly bonded ligands downshifts the d-band center, which narrows the band gap, and optimizes the adsorption of these intermediates. For example, the activity of the oxygen evolution reaction (OER) can be greatly promoted by ≈5.7 times over a NiCo layered double hydroxide (LDH) after a terephthalic acid (TPA)-induced conversion process, arising from the reduced energy barrier of the deprotonation of OH* to O*. Impressively, the proposed ligand-induced conversion strategy is applicable to a series of 3d-block metal (hydro)oxides, including NiFe 2 O 4 , NiCo 2 O 4 , and NiZn LDH, providing a general structural upgrading scheme for existing high-performance electrocatalytic systems.

关键词： electronic-structure engineering flexible Zn–air batteries layered double hydroxides metal–organic frameworks oxygen evolution reaction

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