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Antennas and propagation for millimeter wave radio systems for 5G mobile networks - the Tokyo Tech wireless fiber project

Antennas and propagation for millimeter wave radio systems f...

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International Workshop on Antenna technology: Small Antennas and Novel Metamaterials, iWAT

作者： M. Ando J. Hirokawa M. Zhang K. Toyosaki M. Ali K. Sakaguchi Tokyo Kogyo Daigaku Meguro-ku Tokyo JP Dept. of Electrical and Electronic Engineering Tokyo Institute of Technology Tokyo Japan Dep. of Information Communications Technology Osaka University Osaka Japan

The future mobile network called "5G" is becoming a hot topic. The heterogeneous networks using multi-band "HetNet" is one of the promising candidates which provide more than 1000 times system capacity. Millimeter-wave is expected to be utilized for the pico cell coverage as well as the fronthaul to connect these enhanced RRHs. This paper reviews the antennas and propagation research works developed in "Tokyo Tech wireless fiber project", where many of the project outputs are directly applicable for realization of multi-band HetNet utilizing millimeter wave. The 60GHz compact range communication is focused upon.

关键词： Millimeter wave communication Antennas Logic gates Millimeter wave propagation 5G mobile communication

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Time-series modeling of long-term weight self-monitoring data

Time-series modeling of long-term weight self-monitoring dat...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Elina Helander Misha Pavel Holly Jimison Ilkka Korhonen Personal Health Informatics Group Dep. of Signal Processing Tampere University of Technology Finland College of Computer and Information Science and Bouve College of Health Sciences at Northeastern University Boston MA USA

ISBN: (纸本)9781424492695

Long-term self-monitoring of weight is beneficial for weight maintenance, especially after weight loss. Connected weight scales accumulate time series information over long term and hence enable time series analysis of the data. The analysis can reveal individual patterns, provide more sensitive detection of significant weight trends, and enable more accurate and timely prediction of weight outcomes. However, long term self-weighing data has several challenges which complicate the analysis. Especially, irregular sampling, missing data, and existence of periodic (e.g. diurnal and weekly) patterns are common. In this study, we apply time series modeling approach on daily weight time series from two individuals and describe information that can be extracted from this kind of data. We study the properties of weight time series data, missing data and its link to individuals behavior, periodic patterns and weight series segmentation. Being able to understand behavior through weight data and give relevant feedback is desired to lead to positive intervention on health behaviors.

关键词： lead positive intervention health behaviors Health Behavior serial mode Lead Self Monitoring (Personality) Time series missing data

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Enhancing Fault Tolerance and Reducing Delay in Virtual Network Embedding using NSGA-II

Enhancing Fault Tolerance and Reducing Delay in Virtual Netw...

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International Conference on computer, Communication and Control

作者： Angel Bansal Omprakash Kaiwartya Ravindra K. Singh Shiv Prakash Computer Science and Eng. Jaypee University of Eng. and Tech. Faculty of Computing Universiti Teknologi Malaysia Dep. of Chemical Engineering Indian Institute of Technology Delhi

ISBN: (纸本)9781479981656

To improve utilization of resources, efficient resource sharing technique is the key requirement. Recently, Virtual Network Embedding (VNE) has been explored as a resource sharing technique for the modern Internet architecture. The VNE techniques suggested in literature, fault tolerance of connections and nodes of network has not been taken into account. Therefore, these techniques improve resource utilization but their performance is not reliable in realistic network scenario considering the presence of failure in real network environment. To incorporate fault tolerance into account while designing VNE technique, this paper proposes a method for enhancing fault tolerance and reducing delay using Non-dominated Sorting based Genetic Algorithm (NSGA-II). A multi-objective optimization problem is mathematically derived. The two objectives of the optimization problem are fault tolerance and delay of a network path. Modified NSGA-II is developed to solve the optimization problem. Analysis of simulation results confirms that M-NSGA-II effectively optimizes both the objectives of the problem of VNE.

关键词： Fault Tolerance Delay Virtual Network Embedding NSGA-II Optimization

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Spatial-spectral hyperspectral image clustering using cluster's bands box-plots

Spatial-spectral hyperspectral image clustering using cluste...

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European Conference on Data Mining 2014 and International Conferences on Intelligent Systems and Agents 2014 and Theory and Practice in Modern Computing 2014

作者： Al Moghalis, Mohamed A. Hegazy, Osman M. Imam, Ibrahim F. El-Bastawessy, Ali H. Dep. of Information Systems College of Computer and Information Systems Alyamamah University KSA Saudi Arabia Dep. of Information Systems Faculty of Computers and Information Cairo University Egypt Dep. of Computer Science College of Computing and Information Technology Arab Academy for Science Technology and Maritime Transport Egypt Dea. of Faculty of Computer Science MSA University Egypt

ISBN: (纸本)9789898704108

The attention given recently for Hyperspectral Images (HSI) in remote sensing was due to its spectral nature used in earth surface exploration. Recently, researches proposed approaches that combine features of spatial nature with spectral nature to enhance HSI analysis accuracy. The reason behind this orientation is that contiguous pixels mostly share spectral features due to the low spatial resolution. In this paper, authors follow this orientation in clustering HSI using K-means. The proposed approach uses kernels, group of spatially neighbored pixels, to build profile for each cluster. The profile preserves cluster's spectral nature through its bands' Box-Plots that were extracted from selected kernels. The approach starts by selecting K kernels from the given image scene randomly instead of generating random kernels. Then a profile for each cluster is built using the selected kernel pixels' spectrums. The profile consists of b box-plots, where b is the number of bands. Each band box-plot interprets the spread of contiguous pixels' reflectance values in that band. Each pixel in the image will join the nearest cluster. The distance to be measured between any given pixel spectrum and cluster's centroid is replaced by counting how many reflectance values have been considered outlier to their corresponding band's box-plot in that cluster profile. The pixel will join the cluster with minimum outlier count. The profiles are updated iteratively using the new pixels distribution. Data sets used in the experiments are captured by Hyperion Earth Observer 1 (EO-1) sensor. Copyright © 2014 IADIS Press All rights reserved.

关键词： Pixels

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Evaluation of context models to code wavelet-transformed hyperspectral images

Evaluation of context models to code wavelet-transformed hyp...

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作者： Aulí-Llinàs, Francesc Enfedaque, Pablo Serra-Sagristà, Joan Sanchez, Victor Dep. of Information and Communications Engineering Universitat Autónoma de Barcelona Spain Dep. of Computer Science University of Warwick United Kingdom

ISBN: (纸本)9781479957514

Context modeling is key in wavelet-based image coding schemes to achieve competitive coding performance. Commonly, context models are devised for a particular coding system and are employed for many different types of images. The aim of this work is to evaluate the suitability of three well-known context models for coding hyperspectral images, without focusing on a particular wavelet-based coding system. To do so, an entropy-based measure defined using the mechanisms utilized by modern image codecs is employed. The experimental results assess the appropriateness of the context models considering different coding rates and transform strategies. They reveal that some widely-used context models may not be as adequate as it is generally thought. The hints provided by this analysis may help to design simpler and more efficient wavelet-based codecs for hyperspectral images. © 2014 IEEE.

关键词： Wavelet transforms

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On representations of ternary order relations in numeric strings 2

On representations of ternary order relations in numeric str...

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2nd International Conference on Algorithms for Big Data, ICABD 2014

作者： Kim, Jinil Amir, Amihood Na, Joong Chae Park, Kunsoo Sim, Jeong Seop Dep. of Computer Science and Engineering Seoul National University Korea Republic of Department of Computer Science Bar-Ilan University Israel Johns Hopkins University United States Dep. of Computer Science and Engineering Sejong University Korea Republic of Dep. of Computer and Information Engineering Inha University Korea Republic of

Order-preserving matching is a string matching problem of two numeric strings where the relative orders of consecutive substrings are matched instead of the characters themselves. The order relation between two charac... 详细信息

关键词： Pattern matching

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Finite-time Convergence Policies in State-dep.ndent Social Networks

Finite-time Convergence Policies in State-dependent Social N...

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American Control Conference

作者： Daniel Silvestre Paulo Rosa Joao P. Hespanha Carlos Silvestre Dep. of Electrical and Computer Engineering Instituto Superior Tecnico ISR 1046-001 Lisboa Portugal Deimos Engenharia Lisbon Portugal Dept. of Electrical and Computer Eng. University of California Santa Barbara CA 93106-9560 USA Department of Electrical and Computer Engineering of the Faculty of Science and Technology of the University of Macau Macau China

ISBN: (纸本)9781479917730

This paper addresses the problem of finite-time convergence in a social network for a political party or an association, modeled as a distributed iterative system with a graph dynamics chosen to mimic how people interact. It is firstly shown that, in this setting, finite-time convergence is achieved only when nodes form a complete network, and that contacting with agents with distinct opinions reduces to a half the required interconnections. Two novel strategies are presented that enable finite-time convergence, even for the case where each node only contacts the two closest neighbors. These strategies are of prime importance, for instance, in a company environment where agents can be motivated to reach faster conclusions. The performance of the proposed policies is assessed through simulation, illustrating, in particular the finite-time convergence property.

关键词： Social Networks Converge political party Agents Policies Social Media Social Capital Ganglia

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Introduction for instructions hetero sensitivity of pheromone with ant colony optimization

Introduction for instructions hetero sensitivity of pheromon...

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6th International Conference on Agents and Artificial Intelligence, ICAART 2014

作者： Sasaoka, Hisayuki Dep. of Electronics and Computer Engineering Asahikawa National College of Technology Shunkoh-dai 2-2 Asahikawa Japan

ISBN: (纸本)9789897580161

We have known that Ant Colony System (ACS) is one of powerful meta-heuristics and some researchers have reported the effectiveness of some applications using the algorithm. On the other hand, we have known that the algorithms have some problems when we employed it in multi-agent system and we have proposed a new method which is based on Max-Min Ant System (MM-AS), which is improved on ACS. This paper describes results of evaluation experiments with agents implemented our proposed method. In these experiments, we have prepared some different types of agents, which have hetero sensitivity of pheromone. The pheromones are dep.sited by agents and they help to search the shortest path for agents. The reason that we employ the agents are inspired by the report by researcher in the field of biology. Then we have prepared some conditions for RoboCup Rescue Simulation system (RCRS). To confirm the effectiveness, we have considered agents' action in the simulation system. Copyright © 2014 SCITEPRESS.

关键词： Multi agent systems

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Energy-efficient HTTP adaptive streaming for high-quality video over HetNets

Energy-efficient HTTP adaptive streaming for high-quality vi...

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IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： Yunmin Go Oh Chan Kwon Hwanjun Song Div. of IT Convergence Enaineerina POSTECH (Pohang University of Science and Technolozv) Pohanz Republic of Korea Samsung Electronics Suwon Gyeonggi-do KR Dep. of Computer Science Engineering POSTECH (Pohang University of Science and Technology) Pohang Republic of Korea

In this work, we propose an energy-efficient HTTP adaptive streaming for high-quality video over heterogeneous networks (HetNets). To support high-quality video and overcome the limitations of a single network, the proposed system downloads the video segments by concurrently using the HetNets. In the proposed system, the segment bitrate, number of requested segments, network sleep time, and size of requested data through each wireless network are determined adaptively to provide seamless high-quality video streaming in an energy and cost efficient way. The proposed system is fully implemented in an Android-based mobile device and tested in an actual wireless network environments.

关键词： Artificial neural networks Land mobile radio Business Energy consumption Adaptive systems Heterogeneous networks Energy efficiency

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A-Class: A novel classification method 14

A-Class: A novel classification method

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18th Panhellenic Conference on Informatics, PCI 2014

作者： Tsoulos, Ioannis G. Tzallas, Alexandros T. Glavas, Evripidis Dep. of Computer Engineering Technol Educ. School of Applied Technology Institute of Epirus ArtaGR-47100 Greece

ISBN: (纸本)1595930361

A new method based on the well-known technique of Grammatical Evolution, is introduced for data classification. The method constructs classification programs in a C - like programming language in order to classify the input data, producing simple if - else rules. The method is executed in mobile (Android/IOS) environments and the final classification program is displayed on the mobile device screen. © 2014 ACM.

关键词： Genetic programming

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