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Search Results: 1 - 10 of 3202 matches for " Madihah Mohd Saudi "
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STAKCERT Worm Relational Model for Worm Detection
Madihah Mohd Saudi,Andrea J Cullen,Mike E Woodward
Lecture Notes in Engineering and Computer Science , 2010,
Statistical Analysis in Evaluating STAKCERT Infection, Activation and Payload Methods
Madihah Mohd Saudi,Andrea J Cullen,Mike E. Woodward
Lecture Notes in Engineering and Computer Science , 2010,
EDOWA Worm Classification
Madihah Mohd Saudi,Emran Mohd Tamil,Siti Aishah Md Nor,Mohd Yamani Idna Idris
Lecture Notes in Engineering and Computer Science , 2008,
Worm Analysis through Computer Simulation (WAtCoS)
Madihah Mohd Saudi,Kamaruzzaman Seman,Emran Mohd Tamil,Mohd Yamani Idna Idris
Lecture Notes in Engineering and Computer Science , 2008,
Flood Risk Pattern Recognition Using Chemometric Technique: A Case Study in Muda River Basin  [PDF]
Ahmad Shakir Mohd Saudi, Hafizan Juahir, Azman Azid, Mohd Khairul Amri Kamarudin, Mohd Ekhwan Toriman, Nor Azlina Abdul Aziz
Computational Water, Energy, and Environmental Engineering (CWEEE) , 2014, DOI: 10.4236/cweee.2014.33011

This study constructs downscaling statistical model in analyzing the hydrological modeling in the study area which faces the risk of flood occurrence as the impact of climate change. The combination of chemometric method and time series analysis in this study show that even during the monsoon season, rainfall and stream flow are not the major contribution towards the changing of water level in the study area. Based on Correlation Test, it shows that suspended solid and water level show high correlation with p-value < 0.05. Factor Analysis being carried out to determine the major contribution to the changes of Water Level and the result show that Suspended Solid shows a strong factor pattern with value 0.829. Based on Control Chat Builder for time series analysis, the Upper Control Limit for water level and suspended solid are 7.529 m and 1947.049 tons/day and the Lower Control Limit are 6.678 m and 178.135 tons/day. This shows that human development in the area gives high impact towards climate change and risk of flood in the study area which commonly faces flood during monsoon season.

Dynamic Evolution Control for Fuel Cell DC-DC Converter
Ahmad Saudi Samosir,Tole Sutikno,Abdul Halim Mohd Yatim
Abstract: Fuel cells are new alternative energy resource that has a great promise for distributed generation and electric vehicle application. However, fuel cells have a slow response due to their slow internal electromechanical and thermodynamic response. To optimize the fuel cell system performance, a fuel cell DC-DC converter with an appropriate controller which can regulate the power flow and automatically adjust the converter output voltage is needed. This paper proposes a new control technique for fuel cell DC-DC power converter. Design of the proposed control method for fuel cell DC-DC power converter is provided. A new approach for converter controllers synthesis based on dynamic evolution control theory is presented. In this paper, synthesis example of boost DC-DC converter is discussed. Performance of the proposed dynamic evolution control under step load variation condition is simulated under Matlab-Simulink environment. Simulation results show that the proposed techniques are capable for controlling fuel cell DC-DC converter.
Simulation and Implementation of Interleaved Boost DC-DC Converter for Fuel Cell Application
Ahmad Saudi Samosir,NFN Taufiq,Abdul Halim Mohd Yatim
International Journal of Power Electronics and Drive Systems , 2011, DOI: 10.11591/ijpeds.v1i2.126
Abstract: This paper deals with a boost dc-dc converter for fuel cell application. In fuel cell electric vehicles application, a high power boost dc-dc converter is adopted to adjust the output voltage, current and power of fuel cell engine to meet the vehicle requirements. One of challenge in designing a boost converter for high power application is how to handle the high current at the input side. In this paper an interleaved boost dc-dc converter is proposed for current sharing on high power application. Moreover, this converter also reduces the fuel ripple current. Performance of the interleaved boost converter is tested through simulation and experimental results. Keywords: component; Interleaved Boost Converter; Fuel Cell Electric Vehicle; high power application.
Red-Black Strategy for Mobile Robot Path Planning
Azali Saudi,Jumat Sulaiman
Lecture Notes in Engineering and Computer Science , 2010,
Study of 18-Pulse Rectifier Utilizing Hexagon Connected 3-Phase to 9-Phase Transformer
Ahmad Saudi Samosir
Abstract: The 18-pulse converter, using Y or -connected differential autotransformer, is very interesting since it allows natural high power factor correction. The lowest input current harmonic components are the 17th and 19th. The Transformer is designed to feed three six-pulse bridge rectifiers displaced in phase by 200. This paper present a high power factor three-phase rectifier bases on 3-phase to 9-phase transformer and 18-pulse rectifier. The 9-phase polygon-connected transformer followed by 18-pulse diode rectifiers ensures the fundamental concept of natural power factor correction. Simulation results to verify the proposed concept are shown in this paper.
Development of a Current Control Ultracapacitor Charger Based on Digital Signal Processing
Ahmad Saudi Samosir
Abstract: Ultracapacitor usually use as a short-term duration electrical energy storage because it has several advantages, like high power density (5kW/kg), long lifecycle and very good charge/discharge efficiency. Unlike batteries, ultracapacitors may be charged and discharged at similar rates. This is very useful in energy recovery systems such as dynamic braking of transport systems. Here are a few characteristics of ultracapacitors that should be kept in mind when integrating/designing a charging system for the intended application. An ultracapacitor with zero charge looks like a short circuit to the charging source. Most of low cost power supplies fold back the output current in response to a perceived short circuit, making them unsuitable for charging of ultracapacitors. Ultracapacitors have a low series inductance allowing easy stabilizing with switch mode chargers. The RC time constant of passive charging networks is usually too long. Therefore, linear regulators are inefficient components for ultracapacitor charging. In this paper, the development of a current control ultracapacitor charger based on Digital Signal Processing (DSP) is presented.
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