Student Conference on Research and Development
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Worst month rain statistics measurement in Malaysia
- Trang 12-14
Excess attenuation due to rainfall is one of the most important constraints to the performance of microwave radio links. In temperate climates at frequencies above 10 GHz, rainfall rates have significant effects on the performance of microwave radio links. Therefore, the behavior of radio communication links varies seasonally over a year. This paper presents on the results obtained from the analys......
#Rain #Statistics #Probability #Statistical distributions #Radio link #Attenuation measurement #Calendars #Statistical analysis #Time measurement #Frequency
A motion region estimation technique for Web camera application
- Trang 352-355
This paper presents the steps involved in processing the output image obtained from image subtraction. A Web camera or Web cam is used as a video clip capture device and MATLAB version 6.01 with Image Processing Toolbox is used as the analysis software. Image frames extracted from the video clips undergo image subtraction for motion detection purposes. The continuous steps presented in this paper ......
#Motion estimation #Cameras #Motion detection #Application software #MATLAB #Image processing #Image analysis #Software tools #Pixel #Filtering
Iris recognition using self-organizing neural network
- Trang 169-172
Among biometric systems for user verification, iris recognition systems represent a relatively new technology. Our system consists of two main parts: a localizing iris and iris pattern recognition. The raw image is captured using a digital camera. The iris is then extracted from the background after enhancement and noise elimination. Due to noise and the high degree of freedom in the iris pattern,......
#Iris recognition #Neural networks #Information technology #Biometrics #Eyelids #Pattern recognition #Digital cameras #Image reconstruction #Shape #Fingerprint recognition
Flight schedule query system based on natural language processing
- Trang 80-82
Natural language processing is part of the artificial intelligence domain. Basically, natural language is the language used everyday in our communication either in the form of writing or speech. Thus, this paper attempts to apply natural language to a machine (computer), so that it can be processed and interpreted in a human-like manner. However, up to now, this goal has not been achieved. This re......
#Natural language processing #Natural languages #Prototypes #Humans #Processor scheduling #Writing #Speech processing #Computer science #Information systems #Artificial intelligence
Simulation of signal-to-interference ratio performance in GSM system employing switched beam smart antenna system
- Trang 422-425
Signal-to-interference ratio (SIR) is a major limitation factor in cellular radio systems. Capacity, coverage and quality are general key drivers in deploying any wireless system and they are all a function of SIR. Expanding capacity through conventional methods such as deploying new cell sites or new equipment upgrading is expensive and not always effective as it will introduce more interference ......
#GSM #Communication switching #Directive antennas #Land mobile radio cellular systems #Mobile antennas #Mobile communication #Interchannel interference #Pattern analysis #Performance analysis #Directional antennas
Performance of TCP on Mobile IP network during handoffs
- Trang 390-393
Mobile IP solves the primary problem of routing IP packets to mobile nodes. However due to the host motion, some segments may be dropped or lost during handoff. We analyze the effects of the retransmission timeout (RTO) on the TCP performance and propose a new timeout algorithm to reduce long pauses in communication. The new timeout algorithm, fixed RTO (FxRTO) has been written at the transport la......
#TCPIP #IP networks #Jacobian matrices #Home automation #Routing #Delay estimation #Performance analysis #Algorithm design and analysis #Mobile communication #Transport protocols
Performance evaluation of wideband CDMA air interface
- Trang 145-148
The mobile community is currently gearing towards third-generation (3G) and beyond, promising upgraded and seamless integration of a wide variety of communication services for consumers worldwide. 3G systems have been implemented in some European and Asian countries but the development in Malaysia is still in its infancy. The 3G system is based on the wideband code division multiple access (WCDMA)......
#Wideband #Multiaccess communication #GSM #Diversity reception #Mobile communication #Matched filters #Filtering #RAKE receivers #Error correction codes #Forward error correction
Development of simple PWM inverter using photovoltaic cells
- Trang 297-300
This paper presents the development of a simple 1.5 kW single-phase sinusoidal pulse width modulation (PWM) inverter. This inverter is designed to be either a stand-alone or grid connected inverter from a direct supply of photovoltaic (PV) cells. The developed inverter unit converts the DC input supply from the PV cells into a clean sinusoidal voltage output. This power inverter is also capable of......
#Pulse width modulation inverters #Photovoltaic cells #Pulse width modulation #Pulse inverters #Photovoltaic systems #Solar power generation #Energy consumption #Topology #Feeds #Bridge circuits
Nonlinear function approximation using radial basis function neural networks
- Trang 326-329
Radial basis function neural networks (RBFNN) which are best suited for nonlinear function approximation, have been successfully applied to a wide range of areas including system modeling. The two-stage training procedure adapted in numerous RBFNN applications usually provides satisfactory network performance. Though this method is proven to allow faster training and improves convergence, the init......
#Function approximation #Radial basis function networks #Least squares methods #Least squares approximation #Clustering methods #Clustering algorithms #Intelligent networks #Modeling #Convergence #Multi-layer neural network
Development of an adaptive business insolvency classifier prototype (AVICENA) using hybrid intelligent algorithms
- Trang 173-176
Confronted by an increasingly competitive environment and chaotic economic conditions, businesses are faced with the need to accept greater risk. Businesses do not become insolvent overnight, rather creditors, investors and the financial community will receive either direct or indirect indications that a company is experiencing financial distress. Thus, this paper analyzed the ability of AVICENA t......
#Prototypes #Multi-layer neural network #Neural networks #Predictive models #Chaos #Economic forecasting #Environmental economics #Companies #Performance analysis #Association rules