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22nd Annual International Conference on Mobile Computing and Networking, MobiCom 2016

作者： Wang, Wei Liu, Alex X. Sun, Ke State Key Laboratory for Novel Software Technology Nanjing University China Dept. of Computer Science and Engineering Michigan State University United States

ISBN: (纸本)9781450342261

In this demo, we present LLAP, a hand tracking system that uses ultrasound to localize the hand of the user to enable devicefree gesture inputs. LLAP utilizes speakers and microphones on Commercial-Off-The-Shelf (COTS) mobile devices to play and record sound waves that are inaudible to humans. By measuring the phase of the sound signal reflected by the hands or fingers of the user, we can accurately measure the gesture movements. With a single pair of speaker/microphone, LLAP can track hand movement with accuracy of 3.5 mm. For devices with two microphones, LLAP enables drawing-in-the air capability with tracking accuracy of 4.6 mm. Moreover, the latency for LLAP is smaller than 15 ms for both the Android and the iOS platforms so that LLAP can be used for real-time applications. © 2016 Copyright held by the owner/author(s).

关键词： Palmprint recognition

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On the parikh-de-bruijn grid

arXiv

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arXiv 2017年

作者： Burcsi, Péter Lipták, Zsuzsanna Smyth, W.F. Dept. of Computer Algebra Eötvös Loránd Univ. Budapest Hungary Dip. di Informatica University of Verona Verona Italy Dept. of Computing and Software McMaster University Hamilton Canada School of Engineering and Inf. Techn. Murdoch University Perth Australia

68R15 (Primary), 68W32 (Secondary)We introduce the Parikh-de-Bruijn grid, a graph whose vertices are fixed-order Parikh vectors, and whose edges are given by a simple shift operation. This graph gives structural insight into the nature of sets of Parikh vectors as well as that of the Parikh set of a given string. We show its utility by proving some results on Parikh-de-Bruijn strings, the abelian analog of de-Bruijn sequences. Copyright © 2017, The Authors. All rights reserved.

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Performance analysis of electrical parameters of PKL electricity (An experimental analysis on discharge rates, capacity and discharge time, pulse performance and cycle life & deep discharge of Pathor Kuchi Leaf (PKL) electricity cell)

Performance analysis of electrical parameters of PKL electri...

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2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016

作者： Khan, Kamrul Alam Rahman, Akhlaqur Rahman, Md. Siddikur Tahsin, Aniqa Jubyer, Kazi Md. Paul, Shuva Dept. of Physics Dept. of Chemistry Jagannath University Dhaka Bangladesh School of Software and Electrical Engineering Swinburne University of Technology HawthornVIC Australia Dept. of Electrical and Electronic Engineering American International University-Bangladesh Dhaka Bangladesh Dept. of Electrical Engineering and Computer Science South Dakota State University BrookingsSD United States

ISBN: (纸本)9781509043033

Battery/cell has some important parameters which make it unique to operate. PKL Electricity Cell is a voltaic/quasi galvanic cell, which has also some important parameters to make it unique from traditional cell/battery. In this paper, some important parameters e.g., Discharge rates, Pulse performance etc. of PKL Electricity Cell are analysed in experimentally. Since resources of hydrocarbon of Bangladesh are limited, it's better to think about the significant availability of Renewable energy based development. PKL Electricity Cell is a new form of Biomass energy. Biomass energy is the next potential technology of power generation of the third world countries like Bangladesh. Electricity generation from Biomass energy can be used to electrify the off-grid region of Bangladesh. The objective of this paper as follows: Introduce a new form of Biomass energy, Inspect some important parameters of PKL Electricity Cell which have significant impact for generating Electricity and experimental results are shown the impact of PKL Electricity Cell's parameters. © 2016 IEEE.

关键词： Electric power generation

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Detecting "Smart" Spammers on Social Network: A Topic Model Approach

Detecting "Smart" Spammers on Social Network: A Topic Model ...

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2016 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, NAACL HLT 2016 - Student Research Workshop, SRW 2016

作者： Liu, Linqing Lu, Yao Luo, Ye Zhang, Renxian Itti, Laurent Lu, Jianwei iLab Tongji School of Software Engineering Tongji University China Dept. of Computer Science and Technology Tongji University China Dept. of Computer Science and Neuroscience Program University of Southern California United States Institute of Translational Medicine Tongji University China

ISBN: (纸本)9781941643815

Spammer detection on social network is a challenging problem. The rigid anti-spam rules have resulted in emergence of "smart" spammers. They resemble legitimate users who are difficult to identify. In this paper, we present a novel spammer classification approach based on Latent Dirichlet Allocation (LDA), a topic model. Our approach extracts both the local and the global information of topic distribution patterns, which capture the essence of spamming. Tested on one benchmark dataset and one self-collected dataset, our proposed method outperforms other state-of-the-art methods in terms of averaged F1-score. © 2016 Association for Computational Linguistics.

关键词： Statistics

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Imaging device identification using sensor pattern noise based on wiener filtering

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Transactions of the Korean Institute of Electrical Engineers 2016年第12期65卷 2153-2158页

作者： Lee, Hae-Yeoun Dept. of Computer Software Engineering Kumoh National Institute of Technology Korea Republic of

Multimedia such as image, audio, and video is easy to create and distribute with the advance of IT. Since novice uses them for illegal purposes, multimedia forensics are required to protect contents and block illegal usage. This paper presents a multimedia forensic algorithm for video to identify the device used for acquiring unknown video files. First, the way to calculate a sensor pattern noise using Wiener filter (W-SPN) is presented, which comes from the imperfection of photon detectors against light. Then, the way to identify the device is explained after estimating W-SPNs from the reference device and the unknown video. For the experiment, 30 devices including DSLR, compact camera, smartphone, and camcorder are tested and analyzed quantitatively. Based on the results, the presented algorithm can achieve the 96.0% identification accuracy. Copyright © 2013 The Korean Institute of Electrical Engineers.

关键词： Crime

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Additional transmission protocol for fairness enhancement in IEEE 802.11 wireless LANs

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Transactions of the Korean Institute of Electrical Engineers 2016年第12期65卷 2262-2269页

作者： Kang, Tae-Uk Kim, Sunmyeng Dept. of Computer Software Engineering Kumoh National Institute of Technology Korea Republic of

In IEEE 802.11 wireless LANs, when a source node with low data rate occupies the channel resource for a long time, network performance degrades. In order to improve performance, the cooperative communication has been proposed. In the previous cooperative communication protocols, relay nodes deliver data packets only for a source node. In this paper, we propose an additional transmission scheme in which relay nodes select an additional source node based on several information and deliver data packets for the original source node and the selected additional source node. The proposed scheme improves performance and provides fairness among source nodes. Performance of the proposed scheme is investigated by simulation. Our results show that the proposed scheme outperforms the previous protocol in terms of fairness index and throughput.0 Copyright © 2013 The Korean Institute of Electrical Engineers.

关键词： Cooperative communication

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Channel reservation based DCF MAC protocol for improving performance in IEEE 802.11 WLANs

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Transactions of the Korean Institute of Electrical Engineers 2016年第12期65卷 2159-2166页

作者： Hyun, Jong-Uk Kim, Sunmyeng Dept. of Computer Software Engineering Kumoh National Institute of Technology Korea Republic of

In the IEEE 802.11 DCF (Distributed Coordination Function) protocol, the binary exponential backoff algorithm is used to avoid data collisions. However, as the number of stations increases of, the collision probability tends to grow and the overall network performance is reduced. To solve this problem, this paper proposes a data transmission scheme based on the channel reservation method. In the proposed scheme, channel time is divided into reservation period and contention period. During the reservation period, stations succeeded in channel reservation transmit their own data packets in sequence without contention. During the contention period, each station sends its data packets through contentions as in DCF. During both the reservation period and the contention period, each station sends a request for channel reservation for the next reservation period to an AP (Access Point). After receiving such a channel reservation request from each station, the AP decides whether the reservation is succeeded and sends the result via a beacon frame to each station. Performance of the proposed scheme is analyzed through simulations. The simulation results show that the proposed scheme tends to reduce the collision probability of DCF and to improve the overall network performance. Copyright © 2013 The Korean Institute of Electrical Engineers.

关键词： IEEE Standards

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A fast systolic priority queue architecture for a flow-based Traffic Manager

A fast systolic priority queue architecture for a flow-based...

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Annual IEEE Northeast Workshop on Circuits and Systems (NEWCAS)

作者： Imad Benacer François-Raymond Boyer Normand Bélanger Yvon Savaria Dept. of Computer Engineering Polytechnique Montréal Montréal Canada

This paper presents a fast systolic priority queue architecture usable in a traffic manager. The purpose of the traffic manager is to schedule the departure of packets on egress ports in a network processing unit. In the context of this work, this scheduling should ensure that packets are sent in such a way to meet the allowed bandwidth quotas for each packet flow. Also, an important goal is to reduce latency to a minimum in order to best support the upcoming 5G wireless standards. The proposed hardware architecture of the systolic priority queue enables pipelined en/dequeue operations at constant time rate. Detailed description of this processing module is provided, together with the associated algorithm, and the architecture of the traffic manager. The implemented architecture is based on the C coding language and is synthesized with the Vivado High Level Synthesis tool. The obtained results are compared across a range of priority queue dept.s and performance metrics with existing approaches. A throughput improvement of 44% is claimed over best previously reported results. The proposed design of the traffic manager works at 118 MHz when implemented on a Kintex-7 FPGA from Xilinx.

关键词： computer architecture Bandwidth Ports (computers) Hardware Field programmable gate arrays Decision trees Context

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Joint Offloading Decision and Resource Allocation for Multi-user Multi-task Mobile Cloud

Joint Offloading Decision and Resource Allocation for Multi-...

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Ad-Hoc and Sensor Networks Symposium

作者： Meng-Hsi Chen Ben Liang Min Dong Dept. of Electrical and Computer Engineering University of Toronto Dept. of Electrical Computer and Software Engineering University of Ontario Institute of Technology

ISBN: (纸本)9781479966653

We consider a general multi-user mobile cloud computing system where each mobile user has multiple independent tasks. These mobile users share the communication resource while offloading tasks to the cloud. We aim to jointly optimize the offloading decisions of all users as well as the allocation of communication resource, to minimize the overall cost of energy, computation, and delay for all users. The optimization problem is formulated as a non-convex quadratically constrained quadratic program, which is NP-hard in general. An efficient approximate solution is proposed by using separable semidefinite relaxation, followed by recovery of the binary offloading decision and optimal allocation of the communication resource. For performance benchmark, we further propose a numerical lower bound of the minimum system cost. By comparison with this lower bound, our simulation results show that the proposed algorithm gives nearly optimal performance under various parameter settings.

关键词： communication resources Resource utilization UNLOADING Mobile parameter setting CLOUDS Clouds Performance metrics Consumers optimal allocation optimum performance

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Enhancement of WNCS Response using Packet Priority

Enhancement of WNCS Response using Packet Priority

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Al-Sadeq International Conference on Multidisciplinary in IT and Communication Science and Applications

作者： Dhulfiqar S. Aldeen A. Alwahab Computer and Software Dept. Engineering College AL-Mustansiryah University

ISBN: (纸本)9781509032488

The Wireless Network Control System (WNCS) is a new field that merges between wireless sensor network (WSN) and motor control system, this merge has all the advantages of the two fields. But on the other side, will create a new challenge because it accumulates the disadvantages of both. In these systems, sensors and actuators are connected to the controller by a wireless network that presents an additional delay. This delay has a negatory effect because it increases the actuator steady state time. This paper studies the effect of packets delay caused by wireless sensor network (802.11b) on the plant response using TrueTime. The study shows wireless network rapidly raise the steady state time of the actuator when the wireless channel loaded, also it shows that sensor packets delay have more impact on the control system than controller packets. Preemptive schedule type is used to enhance the motor response based on packet priority. Increasing the priority of the sensor packets is a solution that will reduce the steady state time of the motor and increase of the stability time of the system in a wireless network without any additional cost or hardware.

关键词： WNCS WSN PD controller Steady state time Truetime Priority IEEE 802.11b

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