This project investigated the integration of computer-assisted education at Pinelands High School. A literature search was done on the definition of, the infrastructure for and models of, the integration of computer-assisted education. A new model, the Evolutionary Model, of computer-assisted education was developed, Computer-assisted education at Pinelands High School was measured in terms of the necessary infrastructure and the five phases of the Evolutionary Model. The school has integrated computer-assisted education and many of the teachers are involved at the second phase of the Evolutionary Model. The staff of the Computer and Mathematics departments are ahead of the general staff in the integration of computer-assisted education. / Dissertation (MEd)--University of Pretoria, 2004. / Humanities Education / MEd / Unrestricted

Prior research has established that idiosyncratic volatility of the securities prices exhibits a positive trend. This trend and other factors have made the merits of investment diversification and portfolio construction more compelling. A new optimization technique, a greedy algorithm, is proposed to optimize the weights of assets in a portfolio. The main benefits of using this algorithm are to: a) increase the efficiency of the portfolio optimization process, b) implement large-scale optimizations, and c) improve the resulting optimal weights. In addition, the technique utilizes a novel approach in the construction of a time-varying covariance matrix. This involves the application of a modified integrated dynamic conditional correlation GARCH (IDCC - GARCH) model to account for the dynamics of the conditional covariance matrices that are employed. The stochastic aspects of the expected return of the securities are integrated into the technique through Monte Carlo simulations. Instead of representing the expected returns as deterministic values, they are assigned simulated values based on their historical measures. The time-series of the securities are fitted into a probability distribution that matches the time-series characteristics using the Anderson-Darling goodness-of-fit criterion. Simulated and actual data sets are used to further generalize the results. Employing the S&P500 securities as the base, 2000 simulated data sets are created using Monte Carlo simulation. In addition, the Russell 1000 securities are used to generate 50 sample data sets. The results indicate an increase in risk-return performance. Choosing the Value-at-Risk (VaR) as the criterion and the Crystal Ball portfolio optimizer, a commercial product currently available on the market, as the comparison for benchmarking, the new greedy technique clearly outperforms others using a sample of the S&P500 and the Russell 1000 securities. The resulting improvements in performance are consistent among five securities selection methods (maximum, minimum, random, absolute minimum, and absolute maximum) and three covariance structures (unconditional, orthogonal GARCH, and integrated dynamic conditional GARCH).

<p>Disertacija obuhvata opis tradicionalne nastave engleskog jezika kao podsistema sistema obrazovanja i tradicionalne nastave engleskog jezika: jezičke sposobnosti i jezički elementi, nastavne metode, oblici i sredstva. Dostignuća informatičke tehnologije utiču na neophodne promene u obrazovanju. Model računarski podržane nastave engleskog jezika dat je kroz primenu servisa Interneta i kibernetskih i posebnih metoda nastave u računarskoj laboratoriji.</p> / <p>The dissertation presents a description of the traditional English Language teaching as a subsystem of the educational system: langauge skills and elements, methods, forms, aids.<br />The achievments of information technology make influence on necessary changes in education. It also presents model of Computer Assisted English Language Teaching and Learning applying the Internet services and kibernetics and special teaching methods in a<br />computer laboratory.</p>

Improved knowledge of human nerve function and recruitment would enable innovation in the Biomedical Engineering field. Better understanding holds the potential for greater integration between devices and the nervous system as well as the ability to develop therapeutic devices to treat conditions affecting the nervous system. This work presents a three-dimensional volume conductor model of the human arm for coupling with code describing nerve membrane characteristics. The model utilizes an inhomogeneous medium composed of bone, muscle, skin, nerve, artery, and vein. Dielectric properties of each tissue were collected from the literature and applied to corresponding material subdomains. Both a fully anatomical version and a simplified version are presented. The computational model for this study was developed in COMSOL and formatted to be coupled with SPICE netlist code. Limitations to this model due to computational power as well as future work are discussed. The final model incorporated both anatomically correct geometries and simplified geometries to enhance computational power. A stationary study was performed implementing a boundary current source through the surface of a conventionally placed electrode. Results from the volume conductor study are presented and validated through previous studies.

This thesis is concerned with identification of key characteristics and latest trends in the area of utilisation and functionality of e-shops, and the consecutive proposal of a database model of a system which will reflect on these characteristics. The proposal will encompass complex functionality for the administrator of the database as well as for the end users.

This master´s thesis deals with Ultra-wideband and reveals present stage of this technology and situation on marketplace. In this work I will mention the milestones of its history and describe main fundamentals of communication and modulation methods in UWB systems. This work provides an overview of methods in pseudo-noise code design. The practical part includes UWB system simulation based on BPSK modulation and Directsequence multi-access scenario. This work presents BPSK modulated signal behavior in UWB channel model, where AWGN noise and multi-path energy is taken into account. Only physical layer was tested. At the end of this thesis, the summary and conclusion simulation results will be discussed. Bit error rate characteristic is a product of this testing.

Theme of this thesis is practical realization of so-called Island model which is one of way of parallel genetic programming. First part is theoretical. This part is describing terms of genetic programming, age-layered population structure and island model. In second part of thesis is described realization of island model in Java language.

This work deals with behavior of the temperature dependent element that makes a part of thermodynamics system. The aim of this work is to analyze the behavior of that element and to solve the virtual model in PC program ANSYS.

The main goal of the master’s thesis SIMULATION OF INTERCONNECTION OF SOLAR CELLS IN MATLAB is introduction of conversion principle of solar radiation into electrical energy in photovoltaic cells. The thesis deals with mathematical models and equations that describe the solar cell and their interconnection. The main task was to develop a user interface program using MATLAB. The produced program is intended to simulate a single cells or series connection, parallel or in series – parallel cells, and so simulate a photovoltaic panel.

Content of this work is of practical use of EFQM model using self-assessment criteria in the selected company. Work takes into account the individual elements in the functioning of the company to identify gaps in the organization and the discovery of hidden potentials of the company.