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Full-Text Articles in Engineering
Broadband Rf Current Detector, George Cabrera
Broadband Rf Current Detector, George Cabrera
FIU Electronic Theses and Dissertations
The problems to be solved in this thesis were 1) development of a broadband RF preamplifier to be used with non-ferrous current probes so that the amplified signal exceeds the errors due to cable pickup, no detection is needed in this application, and 2) development of a self-contained device that amplifies and detects the output from a nonferrous current probe, providing a digital readout of the current. These instruments have been completed and are being tested for use by the National Institutes of Occupational Safety and Health (NIOSH). The self-contained current meter operates at frequencies up to 600 MHz, and …
Gradient Based Fuzzy C-Means Algorithm, Issam J. Dagher
Gradient Based Fuzzy C-Means Algorithm, Issam J. Dagher
FIU Electronic Theses and Dissertations
A clustering algorithm based on the Fuzzy c-means algorithm (FCM) and the gradient descent method is presented. In the FCM, the minimization process of the objective function is proceeded by solving two equations alternatively in an iterative fashion. Each iteration requires the use of all the data at once. In our proposed approach one datum is presented at a time to the network and the minimization is proceeded using the gradient descent method. Compared to FCM, the experimental results show that our algorithm is very competitive in terms of speed and stability of convergence for large number of data.
Optimal Kernel Development For Real-Time Communications, Monica G. Beltran
Optimal Kernel Development For Real-Time Communications, Monica G. Beltran
FIU Electronic Theses and Dissertations
The purpose of this research is to develop an optimal kernel which would be used in a real-time engineering and communications system. Since the application is a real-time system, relevant real-time issues are studied in conjunction with kernel related issues. The emphasis of the research is the development of a kernel which would not only adhere to the criteria of a real-time environment, namely determinism and performance, but also provide the flexibility and portability associated with non-real-time environments. The essence of the research is to study how the features found in non-real-time systems could be applied to the real-time system …