Student Conference on Research and Development
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Các bài báo tiêu biểu
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
Vibration faults simulation system (VFSS): a system for teaching and training on fault detection and diagnosis
- Trang 15-18
Machine condition monitoring is vital in many plants as any shutdown can lead to both materials and financial losses. Since vibration fault signals and their causes are important for fault detection and diagnosis, a vibration faults simulation system (VFSS) is developed to gain good understanding of vibration faults signals. This paper is aimed at simulating and analyzing vibration fault signals, ......
#Education #Fault detection #Fault diagnosis #Condition monitoring #Analytical models #Predictive models #Signal analysis #Predictive maintenance #Signal design #Rotating machines
Design and analysis of extended mutual authentication scheme for the virtual home environment in 3G mobile network
- Trang 245-248
In the virtual home environment (VHE), which was proposed to offer global roaming and personal service environment portability, user profiles and service logic are conveyed from home network to visited network to provide services at the visited network. Because user profiles and service logic may contain confidential information, some procedures for mutual authentication among entities for offerin......
#Authentication #Logic #Relays #Protocols #Intelligent networks #Protection #Home automation #Tin #Mobile computing #Computer networks
Analysis and design of EMI filters to mitigate conducted emissions
- Trang 204-207
Most applications engineers in the field or designers of EMI devices call EMI filters black magic because: (1) there has not been a proper-design method; (2) the input and output impedances are not constant over the band of interest. This impedance is usually a good guess because the measurements are costly to make and are rarely repeatable; and (3) the filter insertion loss test method specificat......
#Electromagnetic interference #Band pass filters #Voltage #DC motors #TV #Wires #Delta modulation #Impedance measurement #Power supplies #Brushes
Protection of power transformer using microcontroller-based relay
- Trang 224-227
This paper describes the design and implementation of the micro controller-based system for protecting power transformer. The system includes facilities for discrimination between internal fault current and magnetizing inrush current, differential protection, over current protection, over voltage protection and under voltage protection. In this paper, software and hardware of micro controller base......
#Power transformers #Protective relaying #Power system protection #Control systems #Power system relaying #Fault currents #Surge protection #Voltage control #Hardware #System testing
Tổng quan về hạ tầng mạng di động 3G Dịch bởi AI
- Trang 228-232
Sự chuyển đổi từ hệ thống di động thế hệ thứ hai (2G) sang thế hệ thứ ba (3G) (ví dụ: từ GSM sang UMTS) đang diễn ra tại Châu Âu và khu vực Châu Á - Thái Bình Dương. Các nhà điều hành 3G đang triển khai cơ sở hạ tầng mới để cung cấp dịch vụ Internet di động cho người dùng cuối. Ericsson cam kết thực hiện chuyển đổi này một cách thuận lợi nhất có thể cho các nhà điều hành và người dùng cuối. Bài bá......
#3G mobile communication #Network servers #GSM #Web server #Ground penetrating radar #Asynchronous transfer mode #Multiaccess communication #Control systems #IP networks #Streaming media
Predicting transmittance, absorptions and reflectance characteristics for the design of transparent dome passive daylight collector
- Trang 208-212
Daylighting systems are a particular type of solar collector which may be used to provide illumination for the interior of a building by directing daylight into the building. Daylighting and thermal loads are very important design issues for passive daylight collector design. A mathematical model has been developed to predict the visible solar transmittance, absorptance and reflectance of a transp......
#Absorption #Reflectivity #Daylighting #Buildings #Mathematical model #Geometrical optics #Lighting #Thermal loading #Shape #Solar heating
Designing a fault-tolerant architecture for real-time distributed control system
- Trang 23-26
Distributed control systems play major roles in real-time applications. In some circumstances human lives may depend on these systems. Hence, they should be highly dependable. Since there is no specific way to forecast a failure, the systems should have fault-tolerant features to allow them to continue to operate in the presence of fault. In this research, a fault-tolerant architecture for real-ti......
#Fault tolerant systems #Real time systems #Distributed control #Fault tolerance #Humans #Modems #Computer architecture #Media Access Protocol #Access protocols #Telecommunication network reliability
Active network implementations
- Trang 371-374
Active networks have been described as networks that allow routing elements to be extensively programmed by the packets passing through them. This allows computation previously possible only at endpoints to be carried out within the network itself, thus enabling optimizations and extensions of current protocols as well as the development of fundamentally new protocols (see "The Switchware Homepage......
#Computer networks #Protocols #Delay #Educational institutions #Routing #Computer architecture #Explosives #Web and internet services #Laboratories #Search engines
Evaluation of multicasting in WDM optical network
- Trang 257-260
In this paper, we evaluate the performance of multicasting in a single-hop local lightwave network based on a broadcast-and-select system. We use an approximate analytical solution and Markov model to show the effect of tuning time on the average packet delay and offered load. We also show the trade-off between the average packet delay and the number of wavelengths for the network.
#Intelligent networks #Wavelength division multiplexing #WDM networks #Optical fiber networks #Optical receivers #Laser tuning #Optical buffering #Optical filters #Optical transmitters #Broadcasting