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International Conference on Communication Systems and Network Technologies

作者： Amit Kumar Sharma Renuka Yadav Assistant Professor Department of Computer Science & Engineering The ICFAI University Jaipur Rajasthan India Associate System Engineer IBM India Pvt. Ltd. Pune Maharashtra India

ISBN: (纸本)9781479917983

The continuous growth of email users has resulted in the increasing of unsolicited emails also known as Spam. In current, server side and client side anti spam filters are introduced for detecting different features of spam emails. However, recently spammers introduced some effective tricks consisting of embedding spam contents into digital image, pdf and doc as attachment which can make ineffective to current techniques that is based on analysis digital text in the body and subject fields of email. Many of proposed working strategy provides an anti spam filtering approach that is based on data mining techniques which classify the spam and ham emails. The effectiveness of these approaches is evaluated on large corpus of simple text dataset as well as text embedded image dataset. But most of the filtering techniques are unable to handle frequent changing scenario of spam mails adopted by the spammers over the time. Therefore improved spam control algorithms or enhancing the efficiency of various existing data mining algorithms to its fullest extent are the utmost requirement. A comparative study is presented on various spam filtering techniques adopted on the basis of various attributes to find best among all to extract the best results.

关键词： Component Analysis Correlation Feature Selection PCA Bayesian Classifiers SVM J48 LMT Stemming TFIDF

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Abstracts and Workshops 7th National Spinal Cord Injury Conference November 9-11, 2017 Fallsview Casino Resort Niagara Falls, Ontario, Canada Abstracts

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JOURNAL OF SPINAL CORD MEDICINE 2017年第6期40卷 813-869页

作者： [Anonymous] a NET Team Toronto Rehabilitation Institute - University Health Network Toronto ON Canada. fo Neural Engineering and Therapeutic Team Lyndhurst Centre Toronto Rehabilitation Institute - University Health Network Toronto ON Canada. c Rick Hansen Institute Vancouver BC Canada. ev Rick Hansen Institute Vancouver BC Canada. fc Stan Cassidy Hospital University of New Brunswick Fredericton NB Canada. fd Dalhousie University Halifax NS Canada. e University of Saskatchewan Saskatoon SK Canada. aa University of Calgary Calgary AB Canada. y Dalhousie University Halifax NS Canada. fa Health Sciences Centre Winnipeg MB Canada. fb University of Manitoba Winnipeg MB Canada. h University of Alberta Edmonton AB Canada. i Universite Laval Quebe c City QC Canada. bd Rick Hansen Institute Vancouver BC Canada. fz Clinician Investigator Lyndhurst Centre Toronto Rehabilitation Institute University Health Network and Assistant Professor Department of Medicine Division of Physical Medicine and Rehabilitation University of Toronto. v University of Toront o Toronto ON Canada. n Institute of Biomaterials and Biomedical Engineering University of Toronto Toronto ON Canada. o Toronto Rehabilitation Institute - University Health Network Toronto ON Canada. ga Clinical Scientist Lyndhurst Centre Toronto Rehabilitation Institute University Health Network and Assistant Professor Department of Physical Therapy University of Toronto. dx Department of Electrical and Computer Engineering University of Toronto Toronto ON Canada. fm Lawson Health Research Institute London ON Canada. r Parkwood Institute London ON Canada. bi Parkwood Institute London ON Canada. s University of British Columbia Vancouver BC Canada. t Simon Fraser University Burnaby BC Canada. u DeltaQuest Foundation Concord MA USA. z Institut national d'excellence en santé et en services sociaux (INESSS) Quebec City QC Ca

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Numerical and Neural Network Modeling of Motors of a Robot

Numerical and Neural Network Modeling of Motors of a Robot

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RSI/ISM International Conference on Robotics and Mechatronics

作者： H. Tourajizadeh S. Manteghi S. R. Nekoo Assistant professor Department of Mechanical Engineering Faculty of Engineering Kharazmi University Tehran Iran M. Sc. College of Computer and Mechatronics Engineering Islamic Azad University Branch of Science and Research Tehran Iran PhD Student School of Mechanical Engineering Iran University of Science and Technology (IUST) Tehran Iran

ISBN: (纸本)9781467372350

In this paper, parametric and numerical model of the motors of a robot are extracted. A method is proposed here to control the torque and velocity of the motor simultaneously using the extracted dynamics of the motor and consequently control the robot motion more accurately. Parametric model of the motors are derived by conducting standard tests like locked rotor test and step and sine wave input test. In order to derive the neural network and numerical models, a set of sinusoidal, triangular, and random steps signal, are applied as the input to the motor and its speed is recorded as the output. Neural network model of the motors is extracted by using these dataset and considering the MLP neural network structure with Levenberg _Marquardt training method. Results of the numerical model and parametric models are compared and validated by experimental tests.

关键词： Robot Modeling of DC motor Torque-speed control Training algorithm Levenberg-Marquardt

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Four New Protocols for achieving Better Correction Capability of APC Scheme

Four New Protocols for achieving Better Correction Capabilit...

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International Conference on Communications and Signal Processing

作者： Ranita Khumukcham Abhinandan Goswami Yang Saring National Institute of Technology Arunachal Pradesh India-791112.She is Mtech student Department of Computer Science and Engineering National Institute of Technology Arunachal Pradesh India-791112. He is Mtech student Electronics and Communication Engineering department Assistant Professor of Electronics and Communication Engineering department National Institute of Technology Arunachal Pradesh India-791112

ISBN: (纸本)9781479980826

In this paper we analyzed the performance of Aggressive Packet Combining (APC) scheme. Various researchers have already suggested some protocols or schemes for the improvement of performance and correction capability of APC. Here we proposed four new protocols for improving the correction capability of APC. The four new protocols have been studied numerically and presented in this paper.

关键词： Aggressive Packet Combining Correction capability Four bits left/right shift alternate bit reversal half byte reversal full byte reversal

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Nonlinear Control of UAVs using Multi-Layer Perceptrons with Off-Line and On-Line Learning

Nonlinear Control of UAVs using Multi-Layer Perceptrons with...

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American Control Conference

作者： Subodh Bhandari Amar Raheja Daisy Tang Kevin Ortega Ohanes Dadian Ajay Bettadapura Cal Poly Pomona Pomona CA 91768 Professor Department of Aerospace Engineering AIAA Senior Member Cal Poly Pomona Pomona CA 91768 Professor Department of Computer Science Cal Poly Pomona Pomona CA 91768 Associate Professor Department of Computer Science Cal Poly Pomona Pomona CA 91768 Graduate Student Department of Computer Science Cal Poly Pomona Pomona CA 91768 Graduate Research Assistant Department of Computer Science Cal Poly Pomona Pomona CA 91768 Undergraduate Research Assistant Department of Aerospace Engineering AIAA Student Member

ISBN: (纸本)9781479932757

This paper presents the research on the development of neural network based non-linear controllers for an airplane UAV. Multi-layer perceptrons are used for the training of networks, both off-line and on-line. The data required for off-line training is generated from a validated non-linear flight dynamics model of the Cal Poly Pomona 12' Telemaster UAV. The off-line trained network using multilayer perceptrons replaces the inverse transformation required for feedback linearization. On-line training is then accomplished to account for the inversion and modeling error. The controllers are tested in the software-in-the-loop simulation environment using FlightGear Flight Simulator. Simulation results compared with flight data are shown. Also shown are the results in the presence of sensor noise.

关键词： UAV Nonlinear Control using Multi-Layer Perceptrons nonlinear control Unmanned Aerial Vehicle drone honey bees OFF LINE Neural Networks (computer) IN-LINE Simulated Environment Multilayer perceptrons flight data

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Investigation of Mechanical Properties, Microstructure and Wear Rate of High Leaded Tin Bronze after Multidirectional Forging

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Procedia Materials science 2014年 5卷 1081-1089页

作者： Rahul Gupta Sanjay Srivastava G.V. Preetham Kumar Sanjay K. Panthi Ph.D Research Scholar Department of Material Science & Metallurgical Engineering Maulana Azad National Institute of Technology Bhopal 462003 India Associate Professor Department of Material Science & Metallurgical Engineering Maulana Azad National Institute of Technology Bhopal 462003 India Assistant Professor Department of Metallurgical & Materials Engineering National Institute of Technology Karnataka Surathkal Mangalore 575025 India Scientist Computer Simulation & Design Center Advanced Materials and Processes Research Institute (AMPRI) Near Habibganj Naka Hoshangabad Road Bhopal 462064 India

In this work, the change in mechanical properties, microstructure and wear rate of high leaded tin bronze material was studied after multidirectional forging (MDF) process. The total equivalent strain of 0.75 was applied during MDF process result in the improvement of ultimate tensile strength, yield strength, hardness and wear rate along with maintained ductility with the increase in the number of MDF pass. The initial average grain size of 120 nm was refined to the final grain size of 37 nm. The transmission electron microscope, scanning electron microscope and optical microscope was used for the microstructure study of the undeformed, MDForged and wear worn surfaces.

关键词： Multidirectional forging high leaded tin bronze mechanical properties microstructure wear

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Does Portfolio Mix Influence the Mutual Fund Performance?

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Asia-Pacific Journal of Management Research and Innovation 2013年第4期9卷 413 - 421页

作者： Nidhi Walia Ravinder Kumar Assistant Professor University School of Applied Management Punjabi University Patiala. E-mail: Assistant Professor Department of Computer Science and Engineering Thapar University Patiala. E-mail:

Mutual funds put forward a way out to investors to approach maximum securities and get well-diversified portfolio, as investors with small savings neither have sufficient expertise nor have the means for diversification. Fund managers have responsibility to satisfy investors by offering them maximum return at calculated risk. In the anticipation of earning maximum return on investment, fund managers start working on the philosophy of ‘higher the risk, higher the return’ and accordingly focus mainly on equity stock in the portfolio. Whereas in reality the portfolio returns are influenced by many other funds that include market conditions, timings of investment and investment skills of managers. The results highlighted in this article are based on study of absolute returns and risk measures of four mutual funds studied for a period of 36 months. The findings of our analysis provide that fund managers cannot maximise their RoI by investing heavily in the risky securities. Instead the fund managers’ abilities to select quality stock and the appropriate timing determine the risk return trade-off attached with the funds. The article presents the investment styles of various fund managers that they apply to design varied portfolio mix by picking up different securities and the results highlighted provide that fund managers’ superior strategies to select stock alongwith the fund composition enhances the returns and reduces the impact of market volatility.

关键词： Return on investment (RoI) investment strategies volatility risk

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MRI Image Retrieval based on Texture Spectrum and Edge Histogram Features

MRI Image Retrieval based on Texture Spectrum and Edge Histo...

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International Conference on Communication and Signal Processing

作者： N. Kumaran R. Bhavani E. Elamathi the Assistant Professor Department of Computer Science and Engineering Annamalai University Annamalainagar the Professor Department of Computer Science and Engineering Annamalai University Annamalainagar the P.G.Student Department of Computer Science and Engineering Annamalai University Annamalainagar

ISBN: (纸本)9781467348652

The increased need of content based image retrieval technique can be found in a number of different domains such as Data Mining, Education, Medical Imaging, Crime Prevention, Weather forecasting, Remote Sensing and Management of Earth Resources. This proposed paper presents the content based image retrieval for medical applications, using texture features and shape. This method uses a texture spectrum to extract texture features and edge histogram to extract shape features of MRI medical images. Then K-mean cluster and Manhattan distance is used for medical image retrieval.

关键词： Edge histogram K-mean cluster Manhattan distance MRI images

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Toward a Better Understanding of Population Genetics: Pop!World-a Virtual, Inquiry-Based Tool for Teaching Population Genetics

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Journal of College science Teaching 2013年第3期42卷 32-37页

作者： Poulin, Jessica Ramamurthy, Bina Dittmar, Katharina Assistant research professor Department of Biological Sciences University at Buffalo The State University of New York Research associate professor Department of Computer Science and Engineering University at Buffalo The State University of New York Associate professor Department of Biological Sciences University at Buffalo The State University of New York

Population genetics is fundamental to understanding evolutionary theory, and is taught in most introductory biology/evolution courses. Many students are unaware that understanding this topic requires pertinent knowledge of mathematics and consequently struggle with the subject. As a response to this problem, a virtual tool (Pop!World) was developed that teaches introductory population genetics through intuitive, inquirybased visual discoveries. In seven modules students test hypotheses pertaining to the tenants of Mendelian and population genetics. The use of these exercises in a large introductory evolution (1,500+) course as part of a lab unit is described. Survey responses indicate that students perceive the tool as helpful, and a significantly higher interest in the field of evolution is reported after completion of the Pop!World section. Evaluations of multiple student assessments suggest an increased performance in the population genetics section of the course. Generally, we conclude that the visual and modular nature of PopWorld! represents a valuable approach to improving the understanding of the concepts of population genetics. [PUBLICATION ABSTRACT]

关键词： Population genetics Inquiry method science education Higher education Educational materials

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State Estimation for the discretized LWR PDE using explicit polyhedral representations of the Godunov scheme

State Estimation for the discretized LWR PDE using explicit ...

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American Control Conference

作者： JEROME THAI BORIS PRODHOMME ALEXANDRE M. BAYEN Department of Electrical Engineering and Computer Science University of California Berkeley Assistant Specialist at UC Berkeley Institute of Transportation Studies Berkeley Associate Professor Systems Engineering Department of Electrical Engineering and Computer Sciences Department of Civil and Environmental Engineering University of California Berkeley

ISBN: (纸本)9781479901777

This article investigates the problem of estimating the state of discretized hyperbolic scalar partial differential equations. It uses a Godunov scheme to discretize the socalled Lighthill-Whitham-Richards equation with a triangular flux function, and proves that the resulting nonlinear dynamical system can be decomposed in a piecewise affine manner. Using this explicit representation, the system is written as a switching dynamical system (hybrid system), with an exponential number of modes. The estimation problem is posed using Kalman filtering in each of the linear mode, and the approach becomes computationally tractable by tracking the mode evolution as the estimation is performed at each time step. Numerical results are presented using the Mobile Millennium data set, and compared to results obtained using ensemble Kalman filtering, which is used for estimation in traffic monitoring.

关键词： Godunov scheme problem estimating

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