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Research and Development, 2003. SCORED 2003. Proceedings. Student Conference on

Date 25-26 Aug. 2003

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Displaying Results 1 - 25 of 91
  • GUI for PC auto-shutdown

    Publication Year: 2003 , Page(s): 372 - 375
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (251 KB) |  | HTML iconHTML  

    This paper presents the development of graphical user interface (GUI) for auto-shutdown of personal computer using Microsoft Visual Basic 6.0. The software monitors the status of power supply of the personal computer through peripherals device such as uninterrupted power supply (UPS). When the power goes out, the UPS supplies the power to the PC for a limited period of time. Before the UPS reaches its limit it sends a signal to the PC through RS-232 serial port and the software detects the signal and executes for saving all the programs opened by user and give the PC auto-shutdown. An application programming interface (API) function is used in the Visual Basic program. The software developed in this project is capable of saving all the programs opened by the users and shutdown the PC safely when the power goes out. It saves from corruption of all software and hardware in the PC. View full abstract»

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  • Development of a scheduler for quality of service support in IP-based networks

    Publication Year: 2003 , Page(s): 97 - 101
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (219 KB) |  | HTML iconHTML  

    The current IP-based networks are described as best effort. When a packet arrives at a router, the router looks at the destination address, checks with the routing-table entries, then selects the best match and sends the packet to the output queue. The routing is dynamic where the packets in a single flow may take different paths to the destination. Also packets in the output queues are serviced based on first-come-first-serve order. The best effort mechanism of the IP-based networks worked very well in an end-to-end data transfer environment, which contributes to the success of the Internet this far. However, to support real-time multimedia applications over the IP-based networks such as streaming video, IP telephony, Internet radio, teleconferencing, interactive games, etc, would require necessary services that could guarantee the end-to-end delay required by the applications. New service architectures have been recently introduced to support real-time multimedia networking in IP-based networks. Differentiated services (DiffServ) architecture combined with multi protocol label switching (MPLS) have become a promising mechanism of achieving quality of service (QoS) with the scalability required by the Internet. Scheduling mechanisms at the network nodes can give fairness and protection according to the requirements of the traffic. This paper proposes a dynamic scheduler based on fuzzy logic at the DiffServ-enabled MPLS edge node. The fuzzy logic scheduler uses the maximum bandwidth allocation scheme. View full abstract»

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  • A review of image watermarking

    Publication Year: 2003 , Page(s): 381 - 384
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (191 KB) |  | HTML iconHTML  

    Editing, reproduction and distribution of the digital multimedia are becoming extremely easier and faster with the existence of the Internet and the availability of pervasive and powerful multimedia tools. However, these advances have their drawbacks as well, for example unauthorized tampering of images. Digital watermarking has emerged as a possible method to tackle these issues. A digital watermark is created by inserting a digital signal, or pattern within multimedia content. This embedded information can be used to determine whether the host data are being tampered with or not. This paper presents a review of watermarking where watermarking processes are described briefly and the appropriate properties for different applications are discussed. View full abstract»

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  • Production of hydrogen using photovoltaic electrolysis

    Publication Year: 2003 , Page(s): 282 - 285
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (185 KB) |  | HTML iconHTML  

    Fossil fuels had been used for centuries and the usage of those fuels had made their supplies limited. Solar energy is one of the most promising solutions, which offer an actual clean, environmental friendly, renewable and alternative energy option. The main objective of this project is to store the energy from the sun in another form of energy. Hydrogen storage is chosen for its potential to make a clean energy option and low cost in construction. The development for hydrogen-fuel economy which had rapid increase in industrial application had also influent the decision of this project. In this work, the solar energy applications in Malaysia have been investigated and converted to an electric energy by using the photovoltaic cells. Electrolysis, which is the simplest process to generate hydrogen, is powered by the DC voltage from the photovoltaic cell instead of using the battery as power supply. View full abstract»

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  • Voltage regulation of uninterrupted power supplies

    Publication Year: 2003 , Page(s): 385 - 389
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (221 KB) |  | HTML iconHTML  

    Uninterrupted power supply (UPS) systems are used as one solution of power quality problems and to provide ultimate protection for power disturbances such as power blackouts and brownouts. Many UPS systems suffer from poor output voltage regulation especially with heavy loads. This work is aimed to design and implement the UPS hardware system capable of producing continuous and constant 230 Vac, 50 Hz output supply. A feedback loop has been implemented using microcontroller to adjust the dc level supplying the UPS inverter. At the end of the hardware implementation, tests have been carried out to determine the reliability and effectiveness of the designed system, and good results have been obtained in improving the voltage regulation. View full abstract»

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  • Multimedia based virtual learning system - a feasibility study in Malaysia

    Publication Year: 2003 , Page(s): 368 - 371
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (183 KB) |  | HTML iconHTML  

    In the current decade, technology for individual learning has changed from intelligent tutorial learning systems and multimedia information systems to virtual learning environment. The concept of "smart school", one of the main flagship applications in the multimedia super corridor (MSC) is to target the students to learn through self-directed and self-accessed studies. This paper focuses on the feasibility study for multimedia based virtual learning system (MVLS) in Malaysia for educating adults in learning English language which is essential for the development of Malaysia's information based economy to have a global communication. The system provides virtual based environment, an environment similar to real life activities, which makes the learner's attention span longer and enables them to learn faster without having problem to explore the system. View full abstract»

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  • Driver fatigue detection using steering grip force

    Publication Year: 2003 , Page(s): 45 - 48
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (173 KB) |  | HTML iconHTML  

    This paper describes an automobile driver fatigue detection method by monitoring the driver's grip force on the steering wheel, based on the variation in steering grip force due to fatigue or loosing alertness. Steering grip force data is obtained by using two resistive force sensors attached to the steering wheel and connected to a personal computer with the aid of a data acquisition module. The alertness of the driver is then assessed by utilizing change detection algorithm based on log-likelihood ratio. The aforementioned system is a module of a driver safety system for smart vehicle, which uses sensor fusion technology to prevent driver-related road accidents. View full abstract»

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  • Towards an optimal feature subset selection

    Publication Year: 2003 , Page(s): 376 - 380
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB) |  | HTML iconHTML  

    The problem of feature selection is fundamental in a number of different tasks like classification, data mining, image processing, conceptual learning, etc. In recent times, the growing importance of knowledge discovery and data-mining approaches in practical applications has made the feature selection problem a quite hot topic. Choosing a subset of the features may increase accuracy and reduce complexity of the acquired knowledge. This paper, proposes a new feature subset selection approach by using slicing techniques, which was originally proposed for programming languages. Slicing means that we are interested in automatically obtaining that portion 'features' of the case responsible for specific parts of the solution of the case at hand. The paper presented the proposed approach based on slicing techniques improved the feature subset selection for classification task in data mining. View full abstract»

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  • A novel feature selection and extraction method for neural network based transfer capability assessment of power systems

    Publication Year: 2003 , Page(s): 401 - 406
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (316 KB) |  | HTML iconHTML  

    A new feature selection and extraction method is presented in this paper for the neural network (NN) based available transfer capability assessment in the deregulated power system. The objective of feature selection and extraction is to speed up the NN training process and to achieve a more accurate NN results. The proposed method is known as the SDFT method in which it is a combination of the sensitivity and discrete Fourier transform methods. The sensitivity analysis is first used in selecting the input features and then followed by the discrete Fourier transform (DFT) method for extracting NN input features. The hypothesis set of pre-selected data performed by the sensitivity method only offers no improvement in the NN training performance in such cases where many features are highly correlated. Thus, the DFT method is considered so as to extract the pre-selected data to a set of meaningful extracted data. To illustrate the effectiveness of the proposed method, a comparative study of the SDFT, DFT and sensitivity methods is made so as to investigate the effectiveness of the methods in extracting and selecting the NN features. In this study, the NN based available transfer capability assessment has been performed on the Malaysian power system. View full abstract»

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  • Micro controller based adjustable closed-loop dc motor speed controller

    Publication Year: 2003 , Page(s): 59 - 63
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB) |  | HTML iconHTML  

    The speed control of dc motor is very crucial, especially in applications where precision and protection are of essence. Different methods employing solid-state switches are available for a precise control for speed and protection of dc motor. In this paper, the use of micro controller for speed control and protection of dc motor is presented. The peculiarity of this method is its adaptability to different ratings of motors. Experimental results have been obtained which show the employment of microcontroller for acceleration, speed reversal, and deceleration and over current protection of a dc motor. View full abstract»

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  • Developments in control of switched reluctance motor drives

    Publication Year: 2003 , Page(s): 212 - 217
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (310 KB) |  | HTML iconHTML  

    Switched reluctance motor (SRM) as the name indicates is a machine in which torque is produced by the tendency of its moveable part to move to a position where the inductance of the excited winding is maximized (T.J.E. Miller, 2002). Thus far, SRMs are not established successfully in industry compared to brushless DC motors and induction motors. As per construction of the SRM, there shall not be any reasons as it is simple, ruggedness and winding-less rotor makes it easy for cooling process. However, the primary disadvantages of SRM being torque ripple and acoustic noise. Torque ripple stops SRM to secure place in industry. This problem has to be tackled by introducing appropriate control methods. Many efforts have been put on by researcher around the globe and it seems the problem remain unsolved. In this paper, we are to look at the development on control methodologies introduced and applied, and their success story and the future trends as far as the SRM drives is concern. View full abstract»

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  • Fast power system computation using multiprocessor

    Publication Year: 2003 , Page(s): 262 - 266
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB) |  | HTML iconHTML  

    The system being developed is a power system module that will calculate load flow processes and outputting results for better understanding of the grid being analyzed. A dedicated multiprocessors system is developed to suit the purpose. The multiprocessors will utilize low-cost and readily available processors. At the moment, there are only three (3), computers will be connected as a multiprocessors system. Beowulf Linux clustering is implemented to create a 'supercomputer' like environment of the multiprocessor system. Through Linux stable operating system environment, the program would simulate the network using Newton-Raphson iterations to produce results. Fast solutions are enabled using parallel programming and load balancing technique among the multiprocessors system. User-friendly interface is created for easy access and easy interaction with the program and data input. Any trained personnel can monitor the system using the wide 21" screen that will also display the status of other processors currently working. View full abstract»

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  • The observation and simulation of the airplane flutter on low band television broadcasting signal

    Publication Year: 2003 , Page(s): 118 - 122
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (271 KB) |  | HTML iconHTML  

    The paper studies the effect of quasi-periodic or airplane flutter phenomenon on television broadcasting. Airplane flutter is a very important problem. It causes the receiving antenna to receive both direct signal by the Tx (transmitter antenna) and reflected signal scattered by the airplane with phase delay. The sum of two signals results in fading, sometime collapse and distortion of picture on TV screen. We performed measurement and modeling of this phenomenon on TV signal when the airplane flew across and the range Tx and Rx (receiver antenna). The 60.75 MHz frequency (aural frequency of CH3) is used under tests. A single scatter multipath model is introduced. It is used to duplicate some of the measured data and show the dependence of power variation on the airplane fluttering. The fluctuation of the airplane flutter phenomenon was calculated to be around 2-4 dB. View full abstract»

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  • Optical fiber communications planning with the use of Pascal probability for forecasting traffic limitation

    Publication Year: 2003 , Page(s): 334 - 337
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (162 KB) |  | HTML iconHTML  

    The objective of this paper is to improve the calculation method of WDM traffic in optical fiber network. At present, the requirement of traffic is random even and the problem of the planned engineering is to make the flexible model to be stood data for planning and developing the existing optical communication network system. The most of appropriate models of the optical fiber network, therefore, should be able to reproduce the aforesaid type and the quantity of applicable graphic. The model should be suitable for the presentation of Pascal distribution because it is a new alternative for planning of communication network that is able to adjust the value to quantities of wavelength graphics by the analysis of the traffic limitation probability that is to compare the Poisson distribution with wavelength converter in order to improve the system performance. View full abstract»

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  • An interactive environment for a mobile robot using skin detection

    Publication Year: 2003 , Page(s): 64 - 68
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (357 KB) |  | HTML iconHTML  

    This paper presents an interactive computer environment to be implemented on a mobile robot for human-robot interface (HRI) by incorporating skin detection technique. Human face detection yielded by visual sensor is the core towards an interaction between human and robots. Hence, efficient skin detection can serve as the basis towards producing fast face feature extraction for robotics application. The proposed skin detection method is based on color space analysis. The goal is to demonstrate that a common pattern exists among human skin color. In order to support the human-robot interaction application, a hardware and software structure is proposed for the HRI. View full abstract»

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  • Remote data acquisition through Internet based telemetry

    Publication Year: 2003 , Page(s): 237 - 244
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (457 KB) |  | HTML iconHTML  

    This experiment is to develop and implement an Internet based telemetry system. Telemetry is a science of automatically measuring or recording data from one or more instruments and transmitting them over a distance. The transmission of the data can be done over wires or radio waves but this experiment is implementing transmission of the data through the Internet. The system is consisting of local portion and remote portion. In the local portion, data are collected from external measuring devices (EMD) and interfaced to be stored into a local computer, which is connected to the Internet and functions as a server. In the remote portion, it consists of any remote computer that can access to the Internet and are able to access to the data from the local computer (the server) through the Internet. Hardware comprising a PIC microcontroller applied in interfacing circuits is developed to enable communication between the EMD and the local computer. Software programs are also developed for getting data and presenting Web pages to the user at both the local and remote computers. With the Internet based telemetry system, measured data can be accessed globally. View full abstract»

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  • A special library for supporting Jawi fonts in BGI mode

    Publication Year: 2003 , Page(s): 141 - 145
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (282 KB) |  | HTML iconHTML  

    This paper introduces a method of writing Jawi script in Borland graphic mode (BGI); something that is not handled effectively with modern computer systems. The encoding algorithm of this method works by spanning the keyboard keys sequentially from left to right and top to bottom and outputting a numerical value for each key on the keyboard so that each key on the keyboard has a numerical code value. Special drawing functions are designed to draw the different Jawi letters. A Set is used to store the value (shape) of each letter including the letters that fall in the beginning, middle, and end of words as the letters in Jawi change their appearance depending on their position in the word. All the sets and the procedures that correspond to the Jawi letters are stored in one library file. This writing method was tested and it achieved a good, easy, and relatively speedy typing. View full abstract»

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  • New concepts of optimizing unit commitment and economic load dispatch costs in large scale power systems

    Publication Year: 2003 , Page(s): 407 - 412
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (258 KB) |  | HTML iconHTML  

    Using suitable solution techniques to the unit commitment (UC) and economic load dispatch (ELD) problems play major role on finding an optimal power scheduling in electrical power system. The UC and ELD problems are to decide when and which generating units to commit and decommit, in order to minimize the total fuel cost over specified period subject to a large number of difficult constraints. Lagrangian relaxation (LR) has been widely used to solve UC and ELD. Recently bundling method (BM) has appeared to be one of the best multipliers updated techniques for LR. This method has promising and the fastest convergence characteristics for UC and ELD problems. For that reason, this paper is to solve the UC and ELD problems via LR, BM and interior point method. This paper explores also the best possible way of updating Lagrangian multipliers with minimum computation time using fast programming techniques. View full abstract»

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  • Implementation of Internet protocol security in video conferencing over IPV4/V6 on the Linux platform

    Publication Year: 2003 , Page(s): 338 - 340
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (155 KB) |  | HTML iconHTML  

    This paper outlines the architectural principles of secured video conferencing using Internet protocol security (IPSec) over IPv4 and IPv6. In the non-secured video conferencing, an attacker can sniffed, eavesdropped unauthorized interception and spoofed the packet sender/receiver address. A secured video conferencing test-bed consisting two PCs with IPv4/IPv6 stack has been implemented on the Linux platform using IPSec protocol. The security test includes FTP and PING/PING6 between two PCs. The result shows that the sniffer cannot sniff the packets transfer between two PCs. View full abstract»

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  • A GUI based per-unit representation of power system with symmetrical components: an e-learning approach

    Publication Year: 2003 , Page(s): 257 - 261
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (244 KB) |  | HTML iconHTML  

    Every textbook on power system analysis discusses the per-unit system, varying in depth with problems and solutions. However, it is still not an interactive method for teaching and learning the per-unit representation. Thus, it needs a new approach to make teaching and learning process more interactive and interesting for students. The graphical user interface (GUI) provides the user with interactive visual communication to analyze the power systems. This paper presents the GUI based per-unit representation of power systems with symmetrical components in the visual basic (VB) environment. The software allows the user to draw the single line diagram representing the power system with ratings of each component. This GUI based per-unit system is developed for the teaching and learning environment of the power system analysis. The user can make use of this interactive software to calculate the per-unit impedance with respect to the system common MVA base. The reactance diagram of the three sequence impedances, namely, the zero-, positive-, and negative- sequence impedances, can be drawn either manually or automatically. It is hoped that this GUI software will enhance the learning process and make it more interactive, interesting and user friendly. View full abstract»

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  • A study on characterization of gate oxide shorts using non-split model

    Publication Year: 2003 , Page(s): 188 - 192
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (257 KB) |  | HTML iconHTML  

    The integrity of gate oxide shorts (GOS) model is a key factor as quality and reliability indicator of CMOS. Gate oxide defects in MOS transistors can be considered as the layout and technology dependent failures for which logic fault models are not always available, requiring electrical models to simulate the defect characteristics. Previously the GOS have been modeled with split transistors technique using two minor transistors and lumped elements. However, it is problematic to study minimum size transistors affected by GOS failures using the existing unidirectional split model as the channel length is designed at minimum size in particular technology process. This paper presents a study to compare and correlate between split model and non-split model of GOS. View full abstract»

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  • Energy conservation from retrofit 'exit' sign in public premises

    Publication Year: 2003 , Page(s): 279 - 281
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (181 KB) |  | HTML iconHTML  

    This paper presents the energy conservation study for 'exit' sign fittings in the public premises. The 'exit' sign fittings are mandatory requirement by local Malaysia Fire Authority to comply the uniform building byelaws requirement in order to obtain certificate of fitness (C.F) for public premises. The conventional 'exit' sign is mostly installed in the industries and commercial buildings, using conventional filament bulb elements, which are on throughout the year to indicate emergency direction signs. This paper analyses the energy conservation and cost saving by retrofitting the light emitting diode (LED) 'exit' signs. The current measurement drawn by each 'exit' sign is carried out for current consumption. A simple payback period is also calculated to measure the effectiveness of return investment cost. The 'exit' sign maintenance aspects are also included in this paper. View full abstract»

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  • Music synthesis: physical modeling technique

    Publication Year: 2003 , Page(s): 69 - 73
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB) |  | HTML iconHTML  

    This paper deals with the artificial sound production of musical instrument using a computer or simply computer music synthesis. In this work, guitar tones are reproduced using the physical modeling (PM) technique to produce synthetic tones that sound very similar to the original sound. View full abstract»

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  • Modelling and machining of complex mechanical parts using CAD/CAM systems

    Publication Year: 2003 , Page(s): 183 - 187
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (233 KB) |  | HTML iconHTML  

    In the design world, complex parts are commonly used for both functional and ergonomics purposes. These parts are difficult to machine due to its irregular surface curvatures and the complex features. This paper presents the application of CAD/CAM in modelling, process planning and fabrication of a complex mechanical part called "landing gear connector fitting". The part is modelled using UniGraphics CAD/CAM system. The process planning is developed and tool path simulation is carried out. NC codes are then generated for machining using CNC milling machine. The best modelling method and tool path sequence for the part are determined. The recommended cutting parameters are also highlighted. View full abstract»

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  • Student Conference on Research and Development SCOReD 2003 Proceedings

    Publication Year: 2003 , Page(s): 0_3
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