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international conference on science and Technology-computer (ICST)

作者： Krisostomus Nova Rahmanto Mardhani Riasetiawan Department of Computer Sciences and Electronics Universitas Gadjah Mada Yogyakarta Indonesia

Data preservation deals with ensuring that digital data stored today can be read and interpreted tens or hundreds of years from now. As the amount of data that needs to be preserved has been growing significantly, thus a standardized preservation process into big data environment is required. One of the standardized process recognized by ISO 14721:2012 is Open Archival Information system (OAIS). This research proposed a framework for data preservation process in big data architecture by using OAIS main components: Ingest, Archival Storage, Preservation Planning, Access, and Data Management. Based on the analysis, four out of five OAIS main components working in the proposed framework in the big data environment, which are Archival Storage, Preservation Planning, Data Management, and Access.

关键词： Big Data Planning Cloud computing Media Metadata computer architecture

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The Impact of Community Care service system on the Quality Life of the Elderly

The Impact of Community Care Service System on the Quality L...

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2018 2nd international conference on Social sciences, Arts and Humanities (SSAH 2018)

作者： Jinbin Hao Jiangpeng Zhang School of Economics and Management Inner Mongolia university of Science and Technology

Compared with institutional pension and home-based care, community care system has an obvious advantage in the psychological cognition and service acceptance of the elderly. Based on the system theory, the effect of community care service system on the quality of life of the elderly is analysed empirically. The study found that community infrastructure, community life care services, community self-governing services, and medical care services were positively correlated with the quality of life in the elderly. In this paper, the corresponding countermeasures are put forward.

关键词： Community endowment Quality of life Influence Community service system

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An Effective Approach to Controller Placement in Software Defined Wide Area Networks

An Effective Approach to Controller Placement in Software De...

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作者： Wang, Guodong Zhao, Yanxiao Huang, Jun Wu, Yulei Department of Electrical and Computer Engineering South Dakota School of Mines and Technology Rapid CitySD57701 United States School of Computer Science and Technology Chongqing University of Posts and Telecom Chongqing400065 China College of Engineering Mathematics and Physical Sciences University of Exeter ExeterEX4 4QF United Kingdom

One grand challenge in software defined networking is to select appropriate locations for controllers to shorten the latency between controllers and switches in wide area networks. In the literature, the majority of approaches are focused on the reduction of packet propagation latency, but propagation latency is only one of the contributors of the overall latency between controllers and their associated switches. In this paper, we explore and investigate more possible contributors of the latency, including the end-To-end latency and the queuing latency of controllers. In order to decrease the end-To-end latency, the concept of network partition is introduced and a clustering-based network partition algorithm (CNPA) is then proposed to partition the network. The CNPA can guarantee that each partition is able to shorten the maximum end-To-end latency between controllers and switches. To further decrease the queuing latency of controllers, appropriate multiple controllers are then placed in the subnetworks. Extensive simulations are conducted under two real network topologies from the Internet Topology Zoo. The results verify that the proposed algorithm can remarkably reduce the maximum latency between controllers and their associated switches. © 2004-2012 IEEE.

关键词： Controllers

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A hardware-in-the-loop experimental platform for power grid security 125

A hardware-in-the-loop experimental platform for power grid ...

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125th ASEE Annual conference and Exposition

作者： Kollmer, James Dylan Biswas, Saroj K. Bai, Li Sarwat, Arif I. Saad, Walid Electrical and Computer Engineering Temple University United States United States Department of Electrical and Computer Engineering Virginia Tech. United States

This paper presents the development of a hardware-in-the-loop testbed for a three-bus power grid interfaced with a simulated networked control system (NCS) for studying cyber security threats and their possible impacts on the power grid. The three-bus grid consists of two generator buses, configured as slack bus (constant voltage and angle) and PV bus (constant power and constant voltage), and a load bus (PQ bus). The synchronous generators are driven by dynamometers serving as prime movers, and the field circuits controlled by insulated gate bipolar junction transistor (IGBT) DC/DC choppers. The load bus operates switchable resistors, capacitors, and inductors that are connected to the generator buses through transmission lines. The simulated NCS is implemented on an Opal real-time (Opal-RT) platform, which is a PC/FPGA based real-time simulator that can integrate hardware with software simulations, commonly referred to as hardware-in-the-loop (HIL). In general, HIL setups have the advantage that physical elements under test interact in real time with a simulated model of a large scale system and provide a better insight of performance of both the physical system and the controller. In this HIL experiment, the data acquisition unit (DAQ), and the controller are both implemented on the Opal-RT platform. The controller determines the duty cycle of the pulse width modulated (PWM) signals applied to the gate of the IGBT which controls the voltage applied the generator field circuits, thus producing desired terminal voltages of the generators. Experimental results are presented that show the effects of cyber-attacks on a generator control system. A baseline for the behavior of the three-bus system is first established by operating the generator under various load conditions for which the controller maintains the desired terminal voltage. Then, a series of denial-of-service (DoS) attacks in the feedback loop were launched. With no attack prevention mechanism in place, th

关键词： Cyberattacks Data acquisition system Hardware-in-the-loop Networked control system Synchronous generator control

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Guest Editorial: Special Issue on AI Powered Network Management: Data-Driven Approaches Under Resource Constraints

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IEEE INTERNET OF THINGS JOURNAL 2018年第6期5卷 4233-4236页

作者： Cui, Shuguang Yang, Liuqing Cheng, Xiang Univ Calif Davis Dept Elect & Comp Engn Davis CA 95616 USA Colorado State Univ Dept Elect & Comp Engn Ft Collins CO 80523 USA Peking Univ Sch Elect Engn & Comp Sci State Key Lab Adv Opt Commun Syst & Networks Beijing 100871 Peoples R China

In recent years, the explosive development of mobile communications and networking, together with the wave of Internet of Things (IoT), has led to super-complex systems, which are difficult to model and manage. At the same time, such systems are generating a large amount of data on a real-time basis, from both the user and network sides. How to utilize such data to relieve the dependence on restrictive, sometimes even unrealistic, system models are the key leading to more efficient and effective future networks, especially when under various resource constraints as in IoT systems. Fortunately, recent advancements in artificial intelligence (AI), empowered by modern machine learning algorithms, have demonstrated remarkable success in a variety of fields and are stimulating numerous data-driven approaches as well as applications. Combining the availability of big data in complex IoT communication networks and the recent advancements in AI, it now comes the time to renovate how we resolve network management issues to more efficiently and effectively fulfill the dynamic demands of network subscribers, especially in the presence of stringent network resource constraints. With the fuel (IoT data) and the engine (AI), data-driven network management will enable us to dynamically and adaptively meet the spatio-temporal network demands in the most resource-aware and resource-smart manner.

关键词： Special issues and sections Resource management Data models Machine learning Mobile communication computer network management Internet of Things

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Filter bank multicarrier in massive MIMO: Analysis and channel equalization

Filter bank multicarrier in massive MIMO: Analysis and chann...

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作者： Aminjavaheri, Amir Farhang, Arman Farhang-Boroujeny, Behrouz Electrical and Computer Engineering Department University of Utah Salt Lake CityUT84112 United States School of Electrical and Electronic Engineering University College Dublin Dublin 4 Ireland

We perform an asymptotic study of the performance of filter bank multicarrier in the context of massive multi-input multi-output. We show that the effects of channel distortions, i.e., intersymbol interference and intercarrier interference, do not vanish as the base station (BS) array size increases. As a result, the signal-to-interference-plus-noise ratio (SINR) cannot grow unboundedly by increasing the number of BS antennas, and is upper bounded by a certain deterministic value. We show that this phenomenon is a result of the correlation between the multiantenna combining tap values and the channel impulse responses between the mobile terminals and the BS antennas. To resolve this problem, we introduce an efficient equalization method that removes this correlation, enabling us to achieve arbitrarily large SINR values by increasing the number of BS antennas. We perform a thorough analysis of the proposed system and find analytical expressions for both equalizer coefficients and the respective SINR. © 1991-2012 IEEE.

关键词： Orthogonal frequency division multiplexing

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Container-as-a-service architecture for business workflow

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international Journal of Simulation and Process Modelling 2018年第2期13卷 102-115页

作者： Tao, Ye Wang, Xiaodong Xu, Xiaowei Liu, Guozhu School of Informatics Science and Technology Qingdao University of Science and Technology Qingdao Shandong China Department of Computer Science and Technology Ocean University of China Qingdao Shandong China

The massive amount of data makes the work of building a smart city more data-driven. However, due to volume, security and privacy reasons, data migration can be difficult in a large system. To build a bridge between data owners and data analysers, we present a container-as-a-service (CaaS) framework for service migration, which forms the infrastructures, applications and services for different vendors. By using containers, resources are virtualised and isolated to simplify the creation and deployment of multiple applications autonomously across multiple vendor systems. Inside a container, computational tasks and worker processes are encapsulated into web services, in order to leverage service-based workflow technologies to develop timely and effective workflows for a smart city environment. A use case of smart transportation is studied to evaluate the performance of the presented architecture. Results show that the approach can be beneficial to business workflow orchestration in regard to its flexibility and re-usability. Copyright © 2018 Inderscience Enterprises Ltd.

关键词： Containers

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The system Supervising and Warning the Agricultural Meteorological Disaster of Zhejiang Based on WebGIS* Sponsored by Zhejiang science and technology plan project (2015C02048, 2015C33055), “12th Five-Year” National science and technology support program topic (2012BAD20B02) and China Meteorological Administration climate change special issue (CCSF201427).

The System Supervising and Warning the Agricultural Meteorol...

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international conference on Agro-Geoinformatics

作者： Fenfen Guo Yiping Yao Jingjing Xiao Zhifeng Jin Dehui Yuan Zhihai Wang Second Institute of Oceanography State Oceanic Administration Hangzhou China Zhejiang Meteorological Bureau Zhejiang Climate Center Hangzhou China

The monitoring and warning system of main agro-meteorological disasters in Zhejiang Province is researched and developed herein based on technology of WebGIS. According to SOA and B/S structure, the system is constructed on *** development platform by using C# and Java computer language, and applied in in Zhejiang Meteorological Department as a subsystem of “Zhejiang Modern Agricultural Meteorology Business system”.

关键词： Meteorology Monitoring Indexes Agriculture Servers Tools

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Spatio-temporal analysis of river morphological changes and erosion detection using very high resolution satellite image 9

Spatio-temporal analysis of river morphological changes and ...

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9th IGRSM international conference and Exhibition on Geospatial and Remote Sensing: Geospatial Enablement, IGRSM 2018

作者： Mohamad, N. Khanan, M.F.A. Musliman, I.A. Kadir, W.H.W. Ahmad, A. Rahman, M.Z.A. Jamal, M.H. Zabidi, M. Suaib, N.M. Zain, R.M. Faculty of Geoinformation and Real Estate Universiti Teknologi Malaysia Johor Bahru81310 Malaysia Faculty of Civil Engineering Universiti Teknologi Malaysia Johor Bahru81310 Malaysia Faculty of Electrical Engineering Universiti Teknologi Malaysia Johor Bahru81310 Malaysia Faculty of Computer Universiti Teknologi Malaysia Johor Bahru81310 Malaysia

Spatio-temporal analysis of Kilim River using Very High-Resolution (VHR) satellite image between the years of 2005 and 2012 are vital to assess river morphological changes and erosion detection over the specific time duration. Therefore, this study utilizes remote sensing and Geographical Information system (GIS) capabilities to identify the channel migration and shifting as well as to calculate the rate of erosion and accretion. Classification of the river from Quickbird and WorldView-2 images is carry out using Maximum Likelihood Classification (MLC) technique whereas feature selection tool performs to extract river feature from the raw image. Subsequently, river feature been overlaid to identify the changes of riverbank pattern and to calculate the rate of riverbank erosion in terms of area. The result shows the total area of erosion is 27252.959 m2 and the total area of accretion is 6079.999 m2. A maximum erosion of 6993.102 m2 detected at Section E while maximum accretion of 681.026 m2 spotted at Section D. The rates of riverbank erosion are 3406.62 m2/year while the rates for accretion are 759.999 m2/years between 2005 and 2012. Hence, the output of this study enables Langkawi Development Authority (LADA) and other stakeholders to recognize the specific location, which severely affected by erosion and accretion as well as to spot the area experienced huge river channel shifting. © Published under licence by IOP Publishing Ltd.

关键词： Rivers

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Reliability-aware test methodology for detecting short-channel faults in on-chip networks

Reliability-aware test methodology for detecting short-chann...

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作者： Bhowmik, Biswajit Biswas, Santosh Deka, Jatindra Kumar Bhattacharya, Bhargab B. Department of Computer Science and Engineering IIT Guwahati Guwahati781039 India Advanced Computing and Microelectronics Unit Indian Statistical Institute Kolkata Kolkata700108 India

With the advent of rapidly evolving nanoelectronic systems, compact implementation of versatile and dense network-on-chips (NoCs) on a die has emerged as technology-of-choice for multicore computing. However, because of the increased density, NoCs often suffer from various types of manufacturing faults, which degrade the yield and jeopardize the reliability of the overall system. For example, short-channel faults in an NoC often cause system-level failures that may have significant impact on its performance. This paper proposes a cluster-based distributed scheme for online testing of short faults in NoC channels. The proposed algorithm detects both intra and interchannel short faults and identifies the underlying faulty channel-wires connected to a node. The nodes in a cluster-set are appropriately scheduled to reduce test time. The approach scales to larger NoCs irrespective of size of the network and channel width. The proposed scheme also extends its application from regular to irregular NoCs, and to other channel faults like open. Fault simulation shows that the proposed cluster-driven scheme is capable of detecting all modeled short-channel faults. Online evaluation of the scheme also reveals the extent of impact that the short faults impart on various performance metrics for large traffic. Compared to prior work, it reduces hardware area overhead up to 27% and test time by more than 21 × on several test cases. In addition, packet latency and energy consumption are reduced by 19.47%-40.16% and 17.57%-34.20%, respectively. © 1993-2012 IEEE.

关键词： Network-on-chip

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