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Informatics, Electronics & Vision (ICIEV), 2012 International Conference on

Date 18-19 May 2012

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Displaying Results 1 - 25 of 231
  • Improved algorithm for estimating state variables in power system with highly integrated renewable energy sources

    Page(s): 267 - 270
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1002 KB) |  | HTML iconHTML  

    Now-a-days renewable sources are connected to the main grid which creates bi-directional power flow in the network. These sources can have variable and unpredictable impact on the system which can produce variable outputs. So, real and reactive power becomes variable throughout the hybrid power system. As a consequence the voltage and angle of the system diverges. Thus a faster technique is needed to compute these state variables for different buses. This paper introduces a modified Newton-Raphson (MNR) method along with modified LU decomposition, optimized acceleration factor and sparse memory allocation to reduce cost and increase speed which is even faster than conventional fast decoupled method. This modified algorithm is highly suitable for hybrid power system for its fast execution. View full abstract»

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  • Series joint coordination using single actuator

    Page(s): 1044 - 1049
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1291 KB) |  | HTML iconHTML  

    This paper reports a novel technique of controlling individual or any set of series joints, using only one actuator. Electromagnetic Lock System, a key feature of the project, has been employed at each joint to lock or unlock it during coordination. As an example an anthropomorphic finger is constructed and a stepper motor is used as an actuator. View full abstract»

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  • Electronic voting - Scopes and limitations

    Page(s): 525 - 529
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (432 KB) |  | HTML iconHTML  

    Unlike traditional systems, electronic voting (e-voting) systems exploit computerized voting equipments, computer networks and cryptographic protocols to conduct elections. They possess the ability to merge both verifiability and ballot secrecy successfully at the same time, a combination that cannot be achieved by other means. Hence, elections conducted by e-voting systems are expected to be efficient, accurate, secure and convenient. However, potential problems associated with e-voting systems may degrade their acceptance. To establish e-voting systems as a reliable tool to conduct elections, already extensive research has been proposed. This paper proposes an analysis of existing e-voting schemes along with their scopes and limitations. View full abstract»

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  • Latency analysis of metallic single walled Carbon nanotube (SWCNT) in circuit interconnections for VLSI

    Page(s): 160 - 165
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (486 KB) |  | HTML iconHTML  

    The Resistor Capacitor (RC) model is used to analyze circuit parameters for a CNT-bundle interconnects. In this paper the performance of the single CNT interconnection with Cu and Au using predetermined equations was attempted first. Due to poor yield of single CNT, bundle of CNT was analyzed and eventually the performance of the CNT-bundle, copper and gold interconnects was compared respectively at local, intermediate and global lengths. Finally it has been shown that the metallic SWCNT gives better performance than copper and gold interconnects for both the intermediate and global dimension. View full abstract»

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  • Probabilistic e-epidemic model on computer worms

    Page(s): 1091 - 1096
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (695 KB) |  | HTML iconHTML  

    In epidemiology, several mathematical models are developed by using the system of differential equations and many of them have used the parameters traditionally as deterministic variables. In this paper, the variables, which are used in the system, are considered as random variables with specified distributions because the equations with random coefficients are well suited in describing the real behavior of the parameters as compared to deterministic coefficients. A stochastic spectral representation of the parameters is used. Numerical methods and polynomial chaos method are used to solve and simulate the system of equations and analysis of the spread of worms in computer network with respect to time is done. View full abstract»

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  • Optimized Local Directional Pattern for robust facial expression recognition

    Page(s): 560 - 564
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (663 KB) |  | HTML iconHTML  

    A novel low-cost highly discriminatory feature space is introduced for facial expression recognition, which incorporates weight with the Optimized Local Directional Pattern (OLDP), capable of robust performance over a range of image resolutions. In addition, we use Adaboost to pick a small set of high-flying features, which are used by the Support Vector Machine (SVM) to classify facial expressions proficiently. Experimental results show that the proposed technique improves both the accuracy and the speed of the final classifier compares to other existing state-of-the-art methods. View full abstract»

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  • An intelligent approach to recognize touchless written bengali characters

    Page(s): 711 - 715
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (651 KB) |  | HTML iconHTML  

    This paper proposes a touchless written Bengali character recognizer (TBR), a new touchless approach to write and an intelligent approach to recognize Bengali characters. In TBR, the inputs of Bengali characters have been taken by touchless fashion i.e. by sensing specific color object with a moving hand tracking in front of a webcam. Then they have been recognized by efficient Artificial Neural Network (ANN). Like the application of other traditional computer input devices such as mouse or keyboard, TBR can be extended to write and recognize Bengali words and sentences by adding characters one by one to the text editor. Proposed TBR has been applied for several different forms of touchless writings, namely 49 Bengali characters and 10 Bengali digits. Here for training, ANN with Scale Conjugate Gradient (SCG) method has been used that converges the training time faster and recognizes with good generalization ability. TBR can be useful for the disabled person who wants to write Bengali but cannot write even by any hand. View full abstract»

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  • A proposed framework for full automation of software testing process

    Page(s): 436 - 440
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (696 KB) |  | HTML iconHTML  

    Writing software is a difficult and expensive task. The large volume of software, lack of or partial software requirement and frequent update in software requirement makes software vulnerable without rigorous testing. Manual testing is infeasible in such an arena and lead to unwanted changes in code and specification. Because of increasing use of software in industry, automation of the software testing process has thrown a challenge to the researchers in this field. In this paper, we have presented a comprehensive guideline to tackle the challenge. View full abstract»

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  • Skin infection detection using Dempster-Shafer theory

    Page(s): 1147 - 1151
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1516 KB) |  | HTML iconHTML  

    Skin infections still remain common in many rural communities in developing countries, with serious economic and social consequences as well as health implications. Directly or indirectly, skin infections are responsible for much disability (and loss of economic potential), disfigurement, and distress due to symptoms such as itching or pain. In this research, we built a Skin Infection Expert System for detecting skin infections and displaying the result of detection process. We describe five symptoms as major symptoms which include blister, itch, scaly skin, fever, and pain in the rash. Dempster-Shafer theory to quantify the degree of belief as inference engine in expert system, our approach uses Dempster-Shafer theory to combine beliefs under conditions of uncertainty and ignorance, and allows quantitative measurement of the belief and plausibility in our identification result. View full abstract»

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  • Future of multiprocessors: Heterogeneous Chip Multiprocessors

    Page(s): 372 - 376
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (637 KB) |  | HTML iconHTML  

    As computer applications are becoming complex, large and versatile; the advent of Chip multiprocessor is ubiquitous. There are numerous researches going on about the core architectures within the chip. Heterogeneous Chip Multiprocessor (CMP) is leading the innovation. Heterogeneous CMP is composed of cores of varying performance, and complexity. It gives better area to performance ratio, high throughput, and higher speed up and mitigates Amdahl's bottleneck to some extent. There are three major issues to Heterogeneous CMP- scheduling applications to different cores, configuration of cores, and Amdahl's law utilization. This paper discusses recent researches of these three issues in details and finally, some recommendations are drawn from the study. View full abstract»

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  • Design and construction of single phase pure sine wave inverter for photovoltaic application

    Page(s): 190 - 194
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1585 KB) |  | HTML iconHTML  

    This paper discusses the design and construction scheme of an inverter system which converts the DC voltage collected from a photovoltaic (PV) array into AC voltage. The output is a pure sine wave, with the voltage and frequency of the standard grid output. The system consists of a Switch Mode Power Supply (SMPS) and full bridge inverter circuit with a passive filter. The power supply supplies the DC voltage needed to activate the optocouplers, which are connected to the switches of the full bridge circuitry. The optocouplers work as an isolation for the full bridge circuit. High frequency Pulse Width Modulated (PWM) pulses are generated by a microcontroller (PIC18F4431) and provided to the switches of full bridge connection. The full bridge inverter outputs a PWM sine which is later conditioned to pure sine by an L-C filter. Finally, the output voltage and current is measured and displayed on an LCD (Liquid Crystal Diode) display. View full abstract»

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  • Mental states estimation with the variation of physiological signals

    Page(s): 800 - 805
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2594 KB) |  | HTML iconHTML  

    In this paper, we describe the consequences of mental conditions due to the variation of electrocardiogram, electroencephalogram and blood pressure using BIOPAC system. The different data sets are collected using BIOPAC system in which subjects were induced to undergo the specific sequence of mental condition or cognitive state. For getting physiological signals during different affective condition, we utilized power point slide show, video clips and question-answer method which elicit mental reactions from the subjects. Data was taken before and after four tasks that encompassed the Motor Action (MA), Thought (TH), Memory Related (MR), Emotion (EM). These measured values were analyzed using BIOPAC AcqKnowledge software. It was found that the effect of motor action and thought states are mainly on blood pressure while memory related and emotion state mainly affect the ECG measurement. The EEG mainly detects the signal of task performed by the specific brain region where the electrodes are placed. Here the electrodes are placed in occipital lobe region which gives mainly the variation in alpha amplitude of EEG with eyes closed and eyes opened. Alpha wave amplitudes vary with the subjects attention to mental tasks performed with eyes closed. View full abstract»

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  • An infrared based intelligent Traffic System

    Page(s): 57 - 60
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1549 KB) |  | HTML iconHTML  

    An efficient traffic system is needed for safety of lives, property, time and economy. Here we present a design and implementation of low cost, low power consummated and more reliable an Infrared based intelligent Traffic System. The system is a wireless network based which contains infrared transmitter with a unique identification number and infrared receiver. The system can response rapidly with the violation of traffic rules and shows the result as a tracked ID of the violated vehicle on the LCD (Liquid Crystal Display). This system describes a highly accurate Traffic system using infrared communication. This system achieves high accuracy and more efficiency at Four Way Terminals. This system can be applied in case of both Road divider and Four Way Terminals. View full abstract»

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  • Estimation of important parameters of photovoltaic modules from manufacturer's datasheet

    Page(s): 571 - 576
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1811 KB) |  | HTML iconHTML  

    To analyze the performance of photovoltaic (PV) module, the estimation of important parameters of PV module from manufacturer's datasheet has been done. So it is necessary to estimate the parameters of a PV module with changing weather conditions. The parameters are light current, reverse saturation current, ideality factor, series resistance, and shunt resistance. In this paper, the parameters of a PV module are estimated from manufacturer's datasheets by analytical method. The estimation of these parameters by analytical method helps to know the approximate values of these parameters for a particular module and their variations in different conditions. These discussions give an idea to design more efficient PV module. View full abstract»

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  • Classification of captured and recaptured images to detect photograph spoofing

    Page(s): 1027 - 1032
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1096 KB) |  | HTML iconHTML  

    In this paper, a new face anti-spoofing approach, which is based on analysis of contrast and texture characteristics of captured and recaptured images, is proposed to detect photograph spoofing. Since photo image is a recaptured image, it may show quite different contrast and texture characteristics when compared to a real face image. In a spoofing attempt, image rotation is quite possible. Therefore, in this paper, a rotation invariant local binary pattern variance (LBPV) based method is selected to be used. The approach is tested on the publicly available NUAA photo-impostor database, which is constructed under illumination and place change. The results show that the approach is competitive with other existing methods tested on the same database. It is especially useful for conditions when photos are held by hand to spoof the system. Since an LBPV based method is used, it is robust to illumination changes. It is non-intrusive and simple. View full abstract»

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  • Improvement of In-service Education and Training on Medical Imaging Equipment of Bangladesh

    Page(s): 536 - 541
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1018 KB) |  | HTML iconHTML  

    This paper deals with the development of standard In-service Training and Education of Users and Maintenance personnel on Medical Imaging Equipment in the health services of Bangladesh. Users and Maintenance personnel of equipment should be trained to do routine simple maintenance on equipment. This will increase user care of equipment and cooperation with maintenance technicians to reduce equipment breakdowns. At the same time, this will promote the culture of equipment care and maintenance to improve the quality of health care. Proper use and maintenance of medical equipment are essential to obtain sustained benefits and to preserve capital investment. In-service education and training have a direct impact on the quality of care. Various obstacles for expanding medical equipment use and maintenance capabilities in Bangladesh have been discussed. Proper operation and maintenance problems are complicated by the ever-increasing use of medical imaging equipment as health care is modernized. To date, the operation and maintenance situation in Bangladesh are getting worse and requires special attention. Use and maintenance capabilities are considered during the initial stage of making a decision to acquire equipment. Proper use and maintenance problems can be minimized through in-service training and education. The mission is to ensure that equipment used for patient care is safe, available, accurate, and affordable. In this paper, it has been described the problems and methodology to improve the existing in-service training and education of users and maintenance personnel on MIE. In this study, we designed a framework of in-service training and education of medical imaging equipment (MIE) uses and maintenance system used for in-house clinical engineering department. View full abstract»

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  • On discriminative properties of TPS warping parameters for 3D face recognition

    Page(s): 225 - 230
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1499 KB) |  | HTML iconHTML  

    Due to the advances in the acquisition systems, three-dimensional (3D) facial shape information has been increasingly used for human face recognition. In order to be able to compare different facial surfaces, various registration approaches have been proposed, including Thin Plate Spline (TPS) based algorithms. In this paper, instead of adopting the TPS for registration purposes, we analyze the discriminative properties of the parameters obtained by deforming a generic face model onto target faces using TPS. The warping parameters (WP) that describe the non-global and non-linear transformations and represent the deviations from the common geometric structure are given to the classifier for face recognition. The descriptiveness of those vectors is analyzed on the FRGC database where total of 4569 3D face models are utilized. In spite of its low complexity compared to other proposed approaches, this method yields promising accuracy rates. View full abstract»

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  • Control of autonomous cars for intelligent transportation system

    Page(s): 377 - 382
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (870 KB) |  | HTML iconHTML  

    This work concentrates on establishing a technology to develop a unique approach for the integration of intelligent system control into transportation systems. We have implemented an algorithm [1] that controls a car to track a predefined track which integrates a human driver with computer control to increase human performance while reducing reliance on detailed driver attention. Knowledge obtained from the optical tracking system about vehicle position and orientation provides the automatic decision making intelligence needed to follow a virtual vehicle moving on track. The result shows good performance of this model independent algorithm with fairly cheap RC cars. View full abstract»

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  • Microcontroller based high precision PSO algorithm for maximum solar power tracking

    Page(s): 292 - 297
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3378 KB) |  | HTML iconHTML  

    In this paper, a high precision robust algorithm incorporated with Microcontrollers for tracking maximum power point of PV panel based on particle swarm optimization has been proposed. Steady state error problems as well as problems related to sampling points and sampling direction of traditional swarm chasing algorithm have been successfully encountered in the proposed algorithm. Several swarms based on their decision and neighbor's decision try to converge through the lowest minimum path to reach the maximum power point. The Simulation, performed with MATLAB & PSIM, showed that individual swarm tracks MPPT point with efficiency more than 98%. The response is fast, robust and precise than traditional Algorithms. Step by step procedure of practical realization of the proposed algorithm using ATMEGA8 Microcontroller has been discussed thoroughly. View full abstract»

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  • Collaborative swarm intelligence based Trusted Computing

    Page(s): 1 - 6
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (564 KB) |  | HTML iconHTML  

    Security is one of major barriers for cloud computing popularity. For a secured system, along with protection of data storage it is also important to take rapid action to prevent evolving attacks and maintain a self-healing infrastructure. In this paper a security framework has been proposed, where cognitive and cooperative swarm intelligences are used in order to implement reputation system for establishing self-defensive secured multi-layered cloud systems. To implement the reputation system we have devised algorithms to provide better security solution. The uniqueness of our proposed security framework is its cognitive and self-healing nature with the scope of handling data leakage and data availability issue. View full abstract»

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  • Production of MHD power from municipal waste & algal biodiesel

    Page(s): 1097 - 1100
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (564 KB) |  | HTML iconHTML  

    Accumulation of municipal waste in Dhaka city has given rise to waste management problems. A large component of this waste is organic which produces biomethane by anaerobic digestion. Also load-shedding is a daily misery in Dhaka. But the good thing is that biomethane can be used as fuel for producing electricity. If properly utilized this bio-fuel can reduce both waste management and power management problems. In this paper we aim at establishing a renewable energy power plant that uses biomethane as its primary fuel source. The generator used for producing electricity works on the principle of magneto hydrodynamics (MHD). But the combustion of biomethane emits harmful CO2. To reduce emissions substantially, an algae pond is proposed where the exhaust carbon dioxide is sequestered by the algae. But algae has other attributes- it is potential producer of biodiesel and biomethane; so it secondary renewable energy source for our power plant. Input to our MHD generator is thus the thermal energy obtained from combustion of biomethane& biodiesel. The installation cost of our unique power plant is high, but it offers two big advantages-significant reductions in fuel cost and secondly substantial revenue earned from selling fertilizer. Our studies show that if the MHD generator works at 60% thermal efficiency, over 80MW power can be produced throughout the day. View full abstract»

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  • Development of a transformer oil tester: Capacitance a testing criterion

    Page(s): 108 - 112
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (649 KB) |  | HTML iconHTML  

    Transformers are used extensively for power generation and distribution. Core and winding of these transformers are immersed in mineral oil that works both as an insulator and coolant. But as transformer continues service, its oil is subjected to degradation and should be checked regularly. When a potential difference exists between the winding and tank, which are separated by the dielectric- oil, transformer acts as a capacitor. In this paper, influence of oil degradation level on transformer capacitance is analyzed. Based on analysis and mathematical modeling, correlation between power rating of unused transformer and its capacitance is established. Then a non-destructive oil testing kit is developed which utilizes the obtained relation to determine the insulating oil quality based on the measured value of transformer capacitance. This device is tested on several transformers and results suggest that power transformer capacitance is a potential indicator of its oil quality. View full abstract»

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  • Design and development of a grid tied solar inverter

    Page(s): 1054 - 1058
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1572 KB) |  | HTML iconHTML  

    In this paper a microcontroller based grid tied solar inverter (GTSI) has been designed and developed. Keeping in mind that solar PV power is expensive MOSFET switching has been used for higher DC to AC conversion efficiency. Here, PIC16F88 microcontroller has been used. In order to synchronize the output voltage of the inverter with the Grid voltage, sinusoidal reference voltage for the microcontroller has been taken from the grid line. The microcontroller generates PWM signal which is modulated by the grid voltage. Solar PV power is stored in a 24 V lead-acid battery which can be replaced by using maximum power point tracker. Solar DC power from the battery is feed to a switching circuit which is driven by the PWM signal. The output of the switching circuit is applied to the primary of a 500W step-up transformer. Finally, the output of the step-up transformer is filtered by a capacitor. View full abstract»

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  • Modeling and computation of a solar-piezoelectric hybrid power plant for railway stations

    Page(s): 155 - 159
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1043 KB) |  | HTML iconHTML  

    In this paper, we propose a new model of environment friendly solar-piezoelectric hybrid power plant that solely uses renewable energy to generate electricity and is capable of being practically implemented in railway stations. This model plant utilizes both photovoltaic panels which convert sunlight directly into electricity and piezoelectric pads which convert the mechanical stress exerted on it by moving train into electricity. In piezoelectric pads, lead zirconate titanate (PZT) is used. PZT can tolerate the extreme weight of the train and also accumulate fair amount of charge at the two opposite faces of the pad. The association of PV panels and piezoelectric pads increases the overall efficiency of the generation unit. We have taken Kamlapur Railway station, Bangladesh as a representative of a typical railway station. Nevertheless, this model is equally applicable to any typical railway station situated anywhere in the world and it can support the electricity demand of railway stations with high reliability and storage capacity. View full abstract»

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  • Cost analysis of PV/Wind/diesel/grid connected hybrid systems

    Page(s): 727 - 730
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1559 KB) |  | HTML iconHTML  

    This paper is based on the techno-economic analysis of a several hybrid energy system models for optimization. The analysis of the hybrid systems are based on the logistic type numerical models implemented in the HOMER (Hybrid Optimization Model for Electric Renewables) software package developed by National Renewable Energy Laboratory (NREL), Colorado, USA. This software package is used to analyze the Wind and solar data of a tourist spot in Bandarban, Bangladesh. Analysis of only renewable based hybrid systems have been done as well as grid connected systems. A comparison is shown based on per unit cost of electricity production, operating cost found by simulation results and traditional fossil fuel based energy sources. View full abstract»

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