Thesis (M.S. in Modeling, Virtual Environments and Simulation)--Naval Postgraduate School, September 2002. / Thesis advisor(s): Rudolph P. Darken, Joe Sullivan. Includes bibliographical references (p. 65-66). Also available online.

Thesis (M.S. in Modeling, Virtual Environments and Simulations)--Naval Postgraduate School, September 2002. / Thesis advisor(s). Includes bibliographical references (p. 79-80). Also available online.

Thesis (M.S.)--University of Wisconsin--Madison, 1968. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

The field of computer graphics has continued to provide an efficient means of depicting information about complex phenomena for its users. It has become a widely used tool through which the user may manipulate data to generate a different perspective of the problem at hand and, hence, offers a solution to many varied problems. One area of the application for computer graphics is the field of flight simulation. At the University of Central Florida, research is being conducted in the area of computer graphics simulation to develop a method through which a pictorial representation of the outline of a small airport runway may be modified to appear as viewed by a pilot in a defined airspace. The purpose of this paper is to provide a means of interfacing a small computer to a flight simulator device as well as a graphics terminal. This new implementation of the software will allow a pictorial display to be continuously modified by the changing positional and attitudinal parameters provided from a flight simulator's input. Another goal of this paper is to generate faster display turnaround times by programming the computer in assembly language. Further, the hardware that accomplishes this task is discussed. Finally, suggestions for continued research in this area conclude the report.

The flight simulator display peripheral, described herein, provides the visual aide necessary for observation of effects due to operator responses for any aircraft simulator which prohibits the observers from occupying space within the cockpit of the simulator. This display peripheral is provided by a three-dimensional, computer-controlled, motor-driven model which duplicates the angular movements generated by the aircraft simulator by moving a model aircraft mounted within a clear plastic ball. The display utilizes a Motorola 68000 educational computer board to translate the three aircraft angles. pitch, yaw and roll received from the aircraft simulator via an RS-232C compatible serial asynchronous communication interface at a rate of three hertz, into signals used to drive the stepper motors, mounted in a fixed coordinate frame along the three principal axes, to simulate the aircraft orientation.

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Research, pilot scale and field developments of In-Situ Combustion (ISC) for enhanced oil recovery (EOR) in shallow, low pressure, heavy oil reservoirs intensified between the first and the second oil crisis from 1973 to 1981. A decline of interest in EOR followed the collapse of the oil prices in 1986. Renewed interest on in-situ combustion EOR research in the late 1980’s and beginning of the 1990’s was expanded and focused on high pressure medium and light oil reservoirs. The applicability of air injection in deep high pressure light petroleum reservoirs was established by research work of Greaves et al. in 1987 & 1988, Yannimaras et al. in 1991 and Ramey et a l in 1992. Accelerating rate calorimeter (ARC) tests were used to screen the applicability of various types of light oil reservoirs for in-situ combustion EOR by Yannimaras and Tiffin in 1994. The most successful light oil air injection project in the 1990s in the Medicine Pole Hills Unit, Williston Basin, N. Dakota started in 1987 and was reported by Kumar, Fassihi & Yannimaras, in 1994. Low temperature oxidation of light North Sea petroleum was studied at the University of Bath. A high-pressure combustion tube laboratory system was built at Bath University to evaluate performance of medium and light petroleum in-situ combustion processes. Gravity effects and the impact of horizontal wells in Forced Flow In-Situ Combustion Drainage Assisted by Gravity (FFISCDAG) were studied with three-dimensional combustion experiments. In this study, the university of Bath combustion tube experiments have been simulated and history matched. The tube experiments were up-scaled and field simulation studies were performed. A generic PVT characterization scheme based on 5 hydrocarbon pseudo-components was used, which was validated for light Australian and medium ‘Clair’ oil. A generic chemical reaction characterization scheme was used, which was validated for light Australian and medium ‘Clair’ oil. Advanced PVT and chemical reaction characterizations have been recommended for future work with more powerful hardware platforms. Extensive front track and flame extinction studies were performed to evaluate the performance of currently available non-iso-thermal simulators and to appraise their necessity in air injection processes. Comparative ISC field scale numerical simulation studies of Clair medium oil and light Australian petroleum were based on up-scaled combustion tube experimental results. These studies showed higher than expected hydrocarbon recovery in alternative EOR processes for both pre and post water flood implementation of ISC. Further in this study field scale numerical simulation studies revealed high incremental hydrocarbon recovery was possible by gravity assisted forced flow. The applicability of light oil ISC to gas condensate and sour petroleum reservoirs has been examined in this study with promising results. Light petroleum ISC implemented by a modified water flood including oxidants such as H2O2 and NH4NO3 are expected to widen the applicability of ISC processes in medium and light petroleum reservoirs, especially water flooded North Sea reservoirs.

<p>Developing software for mobile terminals is a challenging task because the actual hardware is </p><p>not available at the beginning of the software development phase. Once a hardware prototype is </p><p>available the software development can continue on that platform. But before that a need for a </p><p>model of the actual hardware is needed, hence some kind of emulator or simulator needs to be the </p><p>developed to give the software developers a head start. The aim of this master thesis is to do a </p><p>market survey of the available simulators for the ARM9E CPU and attached devices in a base- </p><p>band chip and test their flexibility in terms of adding additional devices (both external and on </p><p>chip), and also to implement a simulator using the C++ language. The goal is a modular structure </p><p>for easy addition of certain components such as memory-interfaces, external devices etc. Another </p><p>important part is the profiling of the executed code to instrument the execution in different ways, </p><p>and efficiency to allow fast execution. The conclusion of the market study is that due to the high </p><p>price of these simulators (1.5K€-40k€), we need to design our own simulator. Our simulator </p><p>consists of different blocks; some of them are merely stubbed while others like the memory and </p><p>CPU core are modelled more in detail. The performance of the simulator is around 200 KIPS due </p><p>to the overhead in the debugging functionality. By removing the debugging overhead and </p><p>optimizing the memory handling we could achieve at least 1 MIPS on the ARM execution and 5 </p><p>MIPS on the Thumb execution.</p>

Developing software for mobile terminals is a challenging task because the actual hardware is not available at the beginning of the software development phase. Once a hardware prototype is available the software development can continue on that platform. But before that a need for a model of the actual hardware is needed, hence some kind of emulator or simulator needs to be the developed to give the software developers a head start. The aim of this master thesis is to do a market survey of the available simulators for the ARM9E CPU and attached devices in a base- band chip and test their flexibility in terms of adding additional devices (both external and on chip), and also to implement a simulator using the C++ language. The goal is a modular structure for easy addition of certain components such as memory-interfaces, external devices etc. Another important part is the profiling of the executed code to instrument the execution in different ways, and efficiency to allow fast execution. The conclusion of the market study is that due to the high price of these simulators (1.5K€-40k€), we need to design our own simulator. Our simulator consists of different blocks; some of them are merely stubbed while others like the memory and CPU core are modelled more in detail. The performance of the simulator is around 200 KIPS due to the overhead in the debugging functionality. By removing the debugging overhead and optimizing the memory handling we could achieve at least 1 MIPS on the ARM execution and 5 MIPS on the Thumb execution.