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
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
Mã hóa video MPEG-2 phân tán trên nền tảng Microsoft Windows Dịch bởi AI
- Trang 502-504
Tiêu chuẩn video MPEG-2 được phát triển bởi Nhóm Chuyên gia Hình ảnh Động (MPEG) quy định dòng bit đã mã hóa cho video kỹ thuật số chất lượng cao. Việc mã hóa video MPEG-2 cần rất nhiều công suất xử lý và chủ yếu phụ thuộc vào bộ xử lý của PC và tốc độ xung nhịp của nó. Để làm cho quá trình mã hóa nhanh hơn và tốt hơn trên nền tảng Microsoft Windows, một kiến trúc hệ thống máy tính phân tán có thể......
#Encoding #Code standards #Standards development #MPEG standards #Streaming media #Clocks #Distributed computing #Computer architecture #Costs #Laboratories
Radio resource and mobility management in GPRS network
- Trang 132-135
The General Packet Radio Service (GPRS) is a complex data network which upgrades current second generation GSM networks, offering true high-speed Internet (IP) and X.25 network connectivity over existing GSM cellular networks. The key benefits of GPRS are better use of radio and network resources and completely transparent IP support. The increasing population of mobile users leads to congestion p......
#Mobile radio mobility management #Ground penetrating radar #Radio spectrum management #Resource management #GSM #Packet radio networks #IP networks #Web and internet services #Land mobile radio cellular systems #Delay
Processing the signals from an optical fibre pH sensor by using an artificial neural network
- Trang 340-343
The optimisation of response range of an optical fibre pH sensor based on immobilized bromophenol blue (BPB) in silicone rubber membrane has been studied by using an artificial neural network (ANN). The absorbance spectra of the immobilized BPB were scanned out by using an optical fibre spectrophotometer at different pH values. The-absorbance data were used as an input data for the ANN training. A......
#Signal processing #Optical fibers #Optical fiber sensors #Artificial neural networks #Chemical sensors #Biomembranes #Rubber #Neurons #Chemical technology #Food technology
Detection of migraine in EEG by joint time-frequency representation
- Trang 494-497
Discusses the use of a common joint time-frequency representation, the spectogram, in detection of migraine. Spectogram are computed from electroencephalogram (EEG) obtained by measuring electric potentials on the scalp. Migraine patients often have symptoms of visual and auditory dysfunction, e.g. photophobia and phonophobia. Psychophysical discomfort thresholds to light and sound stimuli are als......
#Electroencephalography #Time frequency analysis #Electric variables measurement #Electric potential #Scalp #Psychology #Lighting control #Signal analysis #Acoustic scattering #Light scattering
Bộ điều khiển tốc độ nhị phân cho động cơ không đồng bộ ba pha Dịch bởi AI
- Trang 200-203
Động cơ không đồng bộ ba pha là loại máy phổ biến và được sử dụng rộng rãi trong ngành công nghiệp. Một động cơ không đồng bộ về cơ bản là động cơ có tốc độ không đổi, tuy nhiên trong nhiều ứng dụng, cần thiết phải có nhiều tốc độ hoặc một dải tốc độ có thể điều chỉnh liên tục. Mục tiêu của dự án này là áp dụng một phương pháp mới gọi là kỹ thuật nhị phân để điều khiển tốc độ của động cơ không đồn......
#Induction motors #Induction generators #Pulse width modulation inverters #AC motors #Synchronous motors #Voltage control #Microcontrollers #Harmonic distortion #Space vector pulse width modulation #Pulse modulation
Fingerprint identification and recognition using backpropagation neural network
- Trang 98-101
Biometrics is a technology which identifies a person based on his physiology or behavioral characteristics. Fingerprint identification and recognition is a biometrics method that has been widely used in various applications because of its reliability and accuracy in the process of recognizing and verifying a person's identity. The main purpose of this paper is to develop a fingerprint identificati......
#Fingerprint recognition #Backpropagation #Neural networks #Biometrics #Image recognition #Image matching #Physiology #Image databases #Spatial databases #Image processing
Modelling and simulation of a single-phase AC-AC matrix converter using SPWM
- Trang 286-289
This paper presents work carried out in developing computer simulation models using the Power System Block Set (PSB) within the MATLab/Simulink (MLS) environment. Its powerful filter design tools, signal processing capabilities are used to illustrate the convenience of modelling and simulation. The SPMC as a direct frequency changer were used in this work with the output being synthesized using th......
#Matrix converters #Power system modeling #Mathematical model #Power system simulation #Computational modeling #Computer simulation #Multilevel systems #Filters #Process design #Signal design
Utilising object oriented approach in a knowledge based system development for an engineering design
- Trang 460-463
The object oriented concept portrays the element of interest as objects. It defines the properties and behaviour associated with the objects. The object-oriented paradigm thus enables objects to be regarded as independent entities where control of the system can be obtained by direct communication between objects. This paper presents the application of object oriented principles to the development......
#Knowledge based systems #Design engineering #Knowledge engineering #Internet #Computer aided manufacturing #Maintenance engineering #Systems engineering and theory #Software prototyping #Prototypes #Data engineering