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Title: Performance impairments of Bluetooth systems specified by external EMI and transmissions from piconet neighbors.
Creator: Gadda, Victor Daniel., Florida Atlantic University, Neelakanta, Perambur S.
Abstract/Description: This study presents computer simulations directed to address the performance of a baseband Bluetooth system. These simulations help to understand the performance impairments experienced by the Bluetooth systems in the presence of external electromagnetic interference (EMI) and interference that arises from piconet neighbors. The simulation results show that the effect of small scale fading is an important factor that decides the performance of a Bluetooth system. Additionally, it is shown...
Show moreThis study presents computer simulations directed to address the performance of a baseband Bluetooth system. These simulations help to understand the performance impairments experienced by the Bluetooth systems in the presence of external electromagnetic interference (EMI) and interference that arises from piconet neighbors. The simulation results show that the effect of small scale fading is an important factor that decides the performance of a Bluetooth system. Additionally, it is shown that the interference from piconet neighbors or the interference that stems from devices belonging to the same piconet can be reduced by using frequency-hoping and time synchronization improvised within the same piconets. The test simulations were performed using MatlabRTM and SimulinkRTM tools.
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Date Issued: 2001
PURL: http://purl.flvc.org/fcla/dt/12836
Subject Headings: Bluetooth technology, Electromagnetic interference
Format: Document (PDF)

Title: Performance evaluation of blind equalization techniques in the digital cellular environment.
Creator: Boccuzzi, Joseph., Florida Atlantic University, Sudhakar, Raghavan
Abstract/Description: This thesis presents simulation results evaluating the performance of blind equalization techniques in the Digital Cellular environment. A new method of a simple zero memory non-linear detector for complex signals is presented for various forms of Fractionally Spaced Equalizers (FSE). Initial simulations are conducted with Binary Phase Shift Keying (BPSK) to study the characteristics of FSEs. The simulations are then extended to complex case via $\pi/$4-Differential Quaterny Phase Shift...
Show moreThis thesis presents simulation results evaluating the performance of blind equalization techniques in the Digital Cellular environment. A new method of a simple zero memory non-linear detector for complex signals is presented for various forms of Fractionally Spaced Equalizers (FSE). Initial simulations are conducted with Binary Phase Shift Keying (BPSK) to study the characteristics of FSEs. The simulations are then extended to complex case via $\pi/$4-Differential Quaterny Phase Shift Keying ($\pi/$4-DQPSK) modulation. The primary focus in this thesis is the performance of this complex case when operating in Additive White Gaussian Noise (AWGN) and Rayleigh Multipath Fading channels.
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Date Issued: 1992
PURL: http://purl.flvc.org/fcla/dt/14859
Subject Headings: Equalizers (Electronics), Computer algorithms, Data transmission systems, Programming electronic computers
Format: Document (PDF)

Title: Performance evaluation of a DS/CDMA packet transmission system under Rician fading channel conditions.
Creator: Argyrides, Christodoulos., Florida Atlantic University, Aalo, Valentine A.
Abstract/Description: This thesis is concerned with the performance analysis of a DS/CDMA packet radio system under Rician fading channel conditions. Analytic expressions are derived for the probability density functions and cumulative distribution functions of the total signal-to-interference ratio when considering mixed-type of interference sources. The users are divided into two groups: those that apply closed-loop power control and those that apply open-loop power control. Four different scenarios of power...
Show moreThis thesis is concerned with the performance analysis of a DS/CDMA packet radio system under Rician fading channel conditions. Analytic expressions are derived for the probability density functions and cumulative distribution functions of the total signal-to-interference ratio when considering mixed-type of interference sources. The users are divided into two groups: those that apply closed-loop power control and those that apply open-loop power control. Four different scenarios of power control were studied. The outage probability is evaluated for the four different cases of power control. A packet transmission protocol with forward error correction capabilities is considered, and the probability density functions of the signal-to-interference ratio are used to calculate the average block error probability as well as the outage probability of the system.
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Date Issued: 2001
PURL: http://purl.flvc.org/fcla/dt/12825
Subject Headings: Code division multiple access, Packet switching (Data transmission)
Format: Document (PDF)

Title: Performance evaluation of Bluetooth(TM) network in the presence of self-interference.
Creator: Gandhi, Viraf Rusi., Florida Atlantic University, Pandya, Abhijit S.
Abstract/Description: Wireless personal area networks (WPAN) are becoming more and more popular for use by mobile professionals in areas like airports, hotels, or convention centers. The demand for wireless networks is expected to undergo an explosive growth as Bluetooth(TM) capable devices become more and more popular. In such a scenario, it is imperative that designer are aware of the performance characteristics of several Bluetooth(TM) networks operating within the same area. There are several issues that need...
Show moreWireless personal area networks (WPAN) are becoming more and more popular for use by mobile professionals in areas like airports, hotels, or convention centers. The demand for wireless networks is expected to undergo an explosive growth as Bluetooth(TM) capable devices become more and more popular. In such a scenario, it is imperative that designer are aware of the performance characteristics of several Bluetooth(TM) networks operating within the same area. There are several issues that need consideration like security, self-interference and adjacent network interference. The objective of this research is to evaluate the performance of a Bluetooth(TM) network in the presence of self-interference which included adjacent and co-channel interference from neighboring Bluetooth(TM) networks. Specific to the above topics of interest, the following research tasks are performed: (1) The magnitude of self-interference problem in Bluetooth(TM) networks. (2) The system throughput is evaluated by varying duty cycles of the various networks. (3) The pathloss difference is measured between the desired and the interfering device.
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Date Issued: 2000
PURL: http://purl.flvc.org/fcla/dt/12679
Subject Headings: Bluetooth technology, Telecommunication--Equipment and supplies, Computer network protocols
Format: Document (PDF)

Title: Photochemical Iron-Mediated Aeration Treatment of Landfill Leachate.
Creator: Gasnier, Francois, Meeroff, Daniel E., Florida Atlantic University
Abstract/Description: Landfilling is the most common method of solid waste disposal in the United States. However, a reported issue with landfill management is the production of leachate, which is a wastewater that is typically too strong to be discharged to municipal wastewater treatment facilities. After reviewing the performance of existing leachate treatment methods, it is clear that an understanding of emerging issues and an all-inclusive solution to long-term management of leachate is currently not available...
Show moreLandfilling is the most common method of solid waste disposal in the United States. However, a reported issue with landfill management is the production of leachate, which is a wastewater that is typically too strong to be discharged to municipal wastewater treatment facilities. After reviewing the performance of existing leachate treatment methods, it is clear that an understanding of emerging issues and an all-inclusive solution to long-term management of leachate is currently not available. The goal of this project is to address the lack of viable and sustainable engineering alternatives for handling leachate. One such futuristic technology is called Photochemical Iron Mediated Aeration (PIMA). Based on the Iron Mediated Aeration process, the PIMA process involves the combined oxidation effect of hydroxyl radicals and ultraviolet radiation with the air stripping potential of aeration. The experiments conducted demonstrated promising results but also the lack of maturity of this technique.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012518
Subject Headings: Sanitary landfills--Leaching--Environmental aspects, Refuse and refuse disposal--Environmental aspects, Water--Purification--Filtration, Integrated solid waste management
Format: Document (PDF)

Title: PRESSURE FLUCTUATION MEASUREMENT TECHNIQUES IN A CIRCULAR DUCT WITH INCOMPRESSIBLE TURBULENT FLOW (FREQUENCY-WAVENUMBER SPECTRA).
Creator: DAVIS, HARRY LEE., Florida Atlantic University, Cuschieri, Joseph M.
Abstract/Description: Turbulent pressure fluctuations and acoustical shock waves formed at pipe discontinuities are the primary source of flow noise. fhe pipe response is excited by the fluctuating forces associated with the turbulent pressure fluctuations. The forcing functions can be determined from the frequency-wavenumber spectrum of the pressure fluctuations. A procedure is developed here to obtain the frequency-wavenumber spectrum due to fully developed turbulent flow. The data analysis procedures developed...
Show moreTurbulent pressure fluctuations and acoustical shock waves formed at pipe discontinuities are the primary source of flow noise. fhe pipe response is excited by the fluctuating forces associated with the turbulent pressure fluctuations. The forcing functions can be determined from the frequency-wavenumber spectrum of the pressure fluctuations. A procedure is developed here to obtain the frequency-wavenumber spectrum due to fully developed turbulent flow. The data analysis procedures developed in this study to analyze the pressure fluctuations provide a good means to determine the frequency-wavenumber spectrum and represent this data in a clear form. Frequency-wavenumber spectra have been obtained for simulated pressure data. In the experimental system designed to collect turbulent pressure data, it was determined that a recessed transducer configuration cannot be used in water pipe flow turbulent pressure fluctuation studies because of the enhanced turbulence created by the upstream holes. Therefore, flush mounted transducers are required.
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Date Issued: 1986
PURL: http://purl.flvc.org/fcla/dt/14330
Subject Headings: Turbulence--Measurement, Fluid dynamics
Format: Document (PDF)

Title: Optimal planning of robot calibration experiments by genetic algorithms.
Creator: Huang, Weizhen., Florida Atlantic University, Wu, Jie
Abstract/Description: In this thesis work, techniques developed in the science of genetic computing is applied to solve the problem of planning a robot calibration experiment. Robot calibration is a process by the robot accuracy is enhanced through modification of its control software. The selection of robot measurement configurations is an important element in successfully completing a robot calibration experiment. A classical genetic algorithm is first customized for a type of robot measurement configuration...
Show moreIn this thesis work, techniques developed in the science of genetic computing is applied to solve the problem of planning a robot calibration experiment. Robot calibration is a process by the robot accuracy is enhanced through modification of its control software. The selection of robot measurement configurations is an important element in successfully completing a robot calibration experiment. A classical genetic algorithm is first customized for a type of robot measurement configuration selection problem in which the robot workspace constraints are defined in terms of robot joint limits. The genetic parameters are tuned in a systematic way to greatly enhance the performance of the algorithm. A recruit-oriented genetic algorithm is then proposed, together with new genetic operators. Examples are also given to illustrate the concepts of this new genetic algorithm. This new algorithm is aimed at solving another type of configuration selection problem, in which not all points in the robot workspace are measurable by an external measuring device. Extensive simulation studies are conducted for both classical and recruit-oriented genetic algorithms, to examine the effectiveness of these algorithms.
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Date Issued: 1995
PURL: http://purl.flvc.org/fcla/dt/15186
Subject Headings: Genetic algorithms, Robots--Calibration, Combinatorial optimization
Format: Document (PDF)

Title: Optimizing C for the M68HC11 processor.
Creator: Holzschuh, Susan M., Florida Atlantic University, Levow, Roy B.
Abstract/Description: The outputs of two available cross compilers for the M68HC11 processor are examined to develop an understanding of the conditions affecting the object code size efficiency of an optimizing C compiler for the M68HC11 processor. The types of optimizations that reduce the size of the code and are not currently implemented by these compilers are described and quantified. In addition, since the object code sizes of the C programs compiled by these compilers are considerably larger than the object...
Show moreThe outputs of two available cross compilers for the M68HC11 processor are examined to develop an understanding of the conditions affecting the object code size efficiency of an optimizing C compiler for the M68HC11 processor. The types of optimizations that reduce the size of the code and are not currently implemented by these compilers are described and quantified. In addition, since the object code sizes of the C programs compiled by these compilers are considerably larger than the object code sizes of comparable assembly language programs, these differences are also examined. The reasons for these differences are also described and quantified. Implementation recommendations are then presented.
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Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14745
Subject Headings: C (Computer program language), Compilers (Computer programs), Motorola 68000 series microprocessors
Format: Document (PDF)

Title: Numerical solution of two-dimensional incompressible flow about an airfoil.
Creator: Barnes, Robert Stuart., Florida Atlantic University, Bober, William
Abstract/Description: A numerical scheme for determining the two dimensional, incompressible flow field about an airfoil is described. The scheme combines two methods: the Neumann (panel) method to determine the potential flow and a hybrid numerical method to determine the boundary layer flow. In the panel method, the fundamental theorems of potential theory are employed to derive the pressure and velocity fields around and along the airfoil. The velocity field obtained in the panel method is used in the hybrid...
Show moreA numerical scheme for determining the two dimensional, incompressible flow field about an airfoil is described. The scheme combines two methods: the Neumann (panel) method to determine the potential flow and a hybrid numerical method to determine the boundary layer flow. In the panel method, the fundamental theorems of potential theory are employed to derive the pressure and velocity fields around and along the airfoil. The velocity field obtained in the panel method is used in the hybrid method to determine the boundary layer thickness along the surface of the airfoil. The hybrid numerical method is an implicit finite difference numerical scheme which combines central and upwind differencing for the convective terms. The boundary layer thickness obtained is introduced back into the panel method to determine new pressure and velocity fields, thus imposing the effects of laminar, viscous flow on the solution. Lift coefficients for various angles of attack are derived and compared with experimental data presented in appropriate NACA technical reports. Reasonable agreement was obtained.
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Date Issued: 1988
PURL: http://purl.flvc.org/fcla/dt/14428
Subject Headings: Aerofoils--Aerodynamics
Format: Document (PDF)

Title: PERFORMANCE EVALUATION OF INTERCONNECTED TOKEN-RING LOCAL AREA NETWORKS.
Creator: DA RE, MARIA., Florida Atlantic University, Ilyas, Mohammad
Abstract/Description: This thesis gives an approximate analytical solution in terms of mean end-to-end delay of a system of token-ring local area networks interconnected via a backbone ring. The solution is based on an existing approximation (see chapter 2) of the mean end-to-end delay in a stand-alone token ring LAN, and it is extended by approximating the arrival rates at the bridges (that are function of the throughput of each subnetwork and the percentage of it that is directed to the other subnetworks). A new...
Show moreThis thesis gives an approximate analytical solution in terms of mean end-to-end delay of a system of token-ring local area networks interconnected via a backbone ring. The solution is based on an existing approximation (see chapter 2) of the mean end-to-end delay in a stand-alone token ring LAN, and it is extended by approximating the arrival rates at the bridges (that are function of the throughput of each subnetwork and the percentage of it that is directed to the other subnetworks). A new packet-length distribution is defined and its detailed derivation is described in Appendix B.
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Date Issued: 1986
PURL: http://purl.flvc.org/fcla/dt/14309
Subject Headings: Local area networks (Computer networks)
Format: Document (PDF)

Title: PERFORMANCE ANALYSIS OF TOKEN-RING LOCAL AREA NETWORK WITH GATED SERVICE DISCIPLINE (LAN).
Creator: HUYNH, LAP THIET., Florida Atlantic University, Ilyas, Mohammad
Abstract/Description: This thesis investigates the waiting-time in a token-ring local area network (LAN) with gated service discipline. It gives an analytical approximati.on for a network with an arbitrary number of stations, non-identical Poisson arrival streams and general service time distributions at each station, and non-zero switch-over time (also referred to as walking time) between adjacent stations. This approximation method is an alternative to the complicated O(N^2) numerical evaluation of the waiting...
Show moreThis thesis investigates the waiting-time in a token-ring local area network (LAN) with gated service discipline. It gives an analytical approximati.on for a network with an arbitrary number of stations, non-identical Poisson arrival streams and general service time distributions at each station, and non-zero switch-over time (also referred to as walking time) between adjacent stations. This approximation method is an alternative to the complicated O(N^2) numerical evaluation of the waiting-time currently available in the literature. Extensive simulation results with different parameters are presented to show the degree of accuracy of the approximation, which is generally good for a practical range of parameters.
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Date Issued: 1987
PURL: http://purl.flvc.org/fcla/dt/14364
Subject Headings: Local area networks (Computer networks), Queuing theory
Format: Document (PDF)

Title: Prestressing steel to concrete bond degradation due to cathodic polarization.
Creator: Joubert, Emmanuel., Florida Atlantic University, Hartt, William H.
Abstract/Description: Experiments were conducted to evaluate occurrence of any deterioration of prestressing steel tendon to concrete bond as a consequence of cathodic polarization. Pretensionned concrete specimens were cathodically polarized with current densities ranging from 50 to 5000 m^2 of steel while exposed to a constant flow of natural sea water. The concrete and steel dimensional changes were monitored by strain gages mounted on the tendons and embedded in the concrete. Contractions of the steel of 25 to...
Show moreExperiments were conducted to evaluate occurrence of any deterioration of prestressing steel tendon to concrete bond as a consequence of cathodic polarization. Pretensionned concrete specimens were cathodically polarized with current densities ranging from 50 to 5000 m^2 of steel while exposed to a constant flow of natural sea water. The concrete and steel dimensional changes were monitored by strain gages mounted on the tendons and embedded in the concrete. Contractions of the steel of 25 to 50 percent of the initial tensioning were recorded after 17 to 36 MC/m^2 were transferred to the tendons on specimens polarized at the highest currents. This corresponds to 54 to 114 years of polarization at 10mA/m^2 if bond loss was solely dependent on the charge transfer. It was noticed that the smaller the current, the more the charge that was transferred before steel contraction began. These results imply that cathodic polarization should impose no threat to the prestressing steel-to-concrete bond on typical structures over their expected lifetime.
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Date Issued: 1995
PURL: http://purl.flvc.org/fcla/dt/15209
Subject Headings: Prestressed concrete, Steel--Corrosion, Cathodic protection
Format: Document (PDF)

Title: Prediction of crude oil product quality parameters using neural networks.
Creator: Bawazeer, Khalid Ahmed., Florida Atlantic University, Zilouchian, Ali
Abstract/Description: Inferential analysis using neural networks technology is being proposed for the Ras Tanura Refinery crude fractionation section. Plant data for a three month operation period is analyzed in order to construct a neural network model with backpropagation training algorithm. The proposed neural network model can predict various properties associated with crude oil products. The simulation results for modeling Naphtha 95% cut point and Naphtha Reid vapor pressure properties are analyzed. A fuzzy...
Show moreInferential analysis using neural networks technology is being proposed for the Ras Tanura Refinery crude fractionation section. Plant data for a three month operation period is analyzed in order to construct a neural network model with backpropagation training algorithm. The proposed neural network model can predict various properties associated with crude oil products. The simulation results for modeling Naphtha 95% cut point and Naphtha Reid vapor pressure properties are analyzed. A fuzzy neural network model is also proposed that takes into account the fuzziness in both process variables and the corresponding product quality parameter. The training algorithm is derived based on the backpropagation technique. The results of the proposed study can ultimately enhance the on-line prediction of crude oil product quality parameters for crude fractionation processes in the Ras Tanura Oil Refinery.
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Date Issued: 1996
PURL: http://purl.flvc.org/fcla/dt/15302
Subject Headings: Petroleum products--Analysis, Petroleum products--Testing, Petroleum industry and trade--Quality control, Neural networks (Computer science)
Format: Document (PDF)

Title: Obstacle avoidance for AUVs.
Creator: Gan, (Linda) Huilin., Florida Atlantic University, Ganesan, Krishnamurthy
Abstract/Description: This thesis describes a general three-dimensional Obstacle Avoidance approach for the Autonomous Underwater Vehicle (AUV) using a forward-looking high-frequency active sonar system. This approach takes into account obstacle distance and AUV speed to determine the vehicle's heading, depth and speed. Fuzzy logic has been used to avoid the abrupt turn of the AUV in the presence of obstacles so that the vehicle can maneuver smoothly in the underwater environment. This approach has been...
Show moreThis thesis describes a general three-dimensional Obstacle Avoidance approach for the Autonomous Underwater Vehicle (AUV) using a forward-looking high-frequency active sonar system. This approach takes into account obstacle distance and AUV speed to determine the vehicle's heading, depth and speed. Fuzzy logic has been used to avoid the abrupt turn of the AUV in the presence of obstacles so that the vehicle can maneuver smoothly in the underwater environment. This approach has been implemented as an important part of the overall AUV software system. Using this approach, multiple objects could be differentiated automatically by the program through analyzing the sonar returns. The current vehicle state and the path of navigation of the AUV are self-adjusted depending on the location of the obstacles that are detected. A minimum safety distance is always maintained between the AUV and any object. Extensive testing of the program has been performed using several simulated AUV on-board systems undergoing different types of missions.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15451
Subject Headings: Submersibles--Automatic control, Fuzzy logic, Neural networks (Computer science)
Format: Document (PDF)

Title: Object-oriented process planning system for printed circuit boards fabrication (OOPP).
Creator: Alif, Nidal M., Florida Atlantic University, Han, Chingping (Jim)
Abstract/Description: An Object-Oriented Process Planning (OOPP) system that generates a particular process plan for Printed Circuit Board (PCB) fabrication is developed. The OOPP is an integrated system that access the manufacturing database, which includes the fabrication processes and the main parameters of Printed Circuit Boards. An Object-Oriented approach has several benefits which include a modular system structure that combine procedures (programs) with data values, improving the communication among...
Show moreAn Object-Oriented Process Planning (OOPP) system that generates a particular process plan for Printed Circuit Board (PCB) fabrication is developed. The OOPP is an integrated system that access the manufacturing database, which includes the fabrication processes and the main parameters of Printed Circuit Boards. An Object-Oriented approach has several benefits which include a modular system structure that combine procedures (programs) with data values, improving the communication among different manufacturing activities, and achieving less system maintenance and down stream errors. OOPP system based on Group Technology (GT) concept and PCB fabrication rules. Applying Group Technology within Object Oriented process planning structure is a new application in this field. This gives more flexibility to the system and presents a technique that intends future reuse.
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Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14761
Subject Headings: Production planning--Data processing, Object-oriented programming (Computer science), Printed circuits
Format: Document (PDF)

Title: Obstruction of chloride diffusion in concrete by embedded reinforcing bars.
Creator: Cros, Pascal., Florida Atlantic University, Hartt, William H.
Abstract/Description: A study was performed of the effect of reinforcing bars on chloride diffusion into concrete. These bars act as obstacles to chloride movement, and this obstruction allows the chloride concentration to build-up faster along the top of the reinforcing bar than elsewhere. As a consequence, the critical chloride threshold to initiate corrosion of the steel is reached sooner than otherwise expected. This research was performed using two different methods. First, chloride analyses were performed on...
Show moreA study was performed of the effect of reinforcing bars on chloride diffusion into concrete. These bars act as obstacles to chloride movement, and this obstruction allows the chloride concentration to build-up faster along the top of the reinforcing bar than elsewhere. As a consequence, the critical chloride threshold to initiate corrosion of the steel is reached sooner than otherwise expected. This research was performed using two different methods. First, chloride analyses were performed on chloride exposed concrete blocks by taking cores in the concrete and drillings along the trace of the top bars. Second, concrete blocks models were analyzed by finite element analysis and the effect of the obstruction by the bar quantified. The role of the reinforcing bar in the chloride diffusional flow is discussed considering these two methods.
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/13239
Subject Headings: Reinforcing bars--Corrosion, Reinforced concrete construction--Corrosion, Concrete--Additives, Chlorides--Diffusion rate
Format: Document (PDF)

Title: Mutual interference in a Bluetooth Scatternet under different environmental conditions.
Creator: Godani, Amee Mahendrabhai., Florida Atlantic University, Mahgoub, Imad
Abstract/Description: Wireless Personal Area Networks (WPANs) are becoming popular with mobile professionals. Bluetooth is a Wireless Protocol proposed by the Bluetooth SIG (Special Interest Group). Bluetooth allows a user to create a WPAN just by inserting a chip into a mobile device. Such devices are called Bluetooth enabled devices. The market for Bluetooth enabled devices is going to boom in the coming few years. For this reason, it is important to analyze the performance of a Bluetooth network in proximity to...
Show moreWireless Personal Area Networks (WPANs) are becoming popular with mobile professionals. Bluetooth is a Wireless Protocol proposed by the Bluetooth SIG (Special Interest Group). Bluetooth allows a user to create a WPAN just by inserting a chip into a mobile device. Such devices are called Bluetooth enabled devices. The market for Bluetooth enabled devices is going to boom in the coming few years. For this reason, it is important to analyze the performance of a Bluetooth network in proximity to other Bluetooth networks. Important issues addressed by such analysis include data security and interference caused by other Bluetooth devices and non-Bluetooth devices. The objective of this research is to evaluate the performance of a Bluetooth network in the presence of interference caused by neighboring Bluetooth networks. This is called mutual interference. The simulation is done with consideration of different packet lengths, where packet lengths are distributed geometrically. The research also considers the near-far effect on the throughput of a Bluetooth unit. The effect of environmental conditions on the performance of Bluetooth Scatternet is also examined.
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Date Issued: 2001
PURL: http://purl.flvc.org/fcla/dt/12744
Subject Headings: Bluetooth technology, Wireless Application Protocol (Computer network protocol)
Format: Document (PDF)

Title: Object-oriented models for material requirements planning systems.
Creator: Jamnongpipatkul, Alisa., Florida Atlantic University, Han, Chingping (Jim)
Abstract/Description: The Material Requirement Planning System (MRP) is a key module in the Enterprise Resources Planning (ERP) systems. Finding better ways of developing systems leads to a robust MRP system and provides prototypes which can be expanded to other modules of the ERP systems. This thesis will provide an object-oriented model of a MRP system which was created and presented by using the Object Modeling Technique (OMT). The model consisted of three parts, the object model, dynamic model, and functional...
Show moreThe Material Requirement Planning System (MRP) is a key module in the Enterprise Resources Planning (ERP) systems. Finding better ways of developing systems leads to a robust MRP system and provides prototypes which can be expanded to other modules of the ERP systems. This thesis will provide an object-oriented model of a MRP system which was created and presented by using the Object Modeling Technique (OMT). The model consisted of three parts, the object model, dynamic model, and functional model. An innovative way to handle the static bill of materials (BOM) data with a more flexible dynamic item class was developed. To demonstrate the flexibility, extendability, and reusability of the object-oriented MRP model, two major business change scenarios were applied to the model. Minor changes to the design were required to accommodate major changes on the functionality of the MRP system.
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Date Issued: 1999
PURL: http://purl.flvc.org/fcla/dt/15653
Subject Headings: Object-oriented methods (Computer science), Material requirements planning
Format: Document (PDF)

Title: Object-oriented modeling of multimedia conferencing systems.
Creator: Chien, Pei-Der., Florida Atlantic University, Fernandez, Eduardo B.
Abstract/Description: Multimedia conferencing has been making significant progress in recent years. There are many research projects and prototypes of this advance in interactive communications, however there is still no general abstract model. This thesis is primarily concerned with developing such a model that covers the major functions employed in a conference. Object Modeling Technique (OMT) is adopted here in describing both the static and dynamic aspects of this model. A relevant authorization system is also...
Show moreMultimedia conferencing has been making significant progress in recent years. There are many research projects and prototypes of this advance in interactive communications, however there is still no general abstract model. This thesis is primarily concerned with developing such a model that covers the major functions employed in a conference. Object Modeling Technique (OMT) is adopted here in describing both the static and dynamic aspects of this model. A relevant authorization system is also considered in this thesis. This system includes the description of an authorization model with general administration policies.
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Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/15070
Subject Headings: Teleconferencing--Computer programs, Telecommunication systems, Multimedia systems--Computer programs, Object-oriented programming (Computer science)
Format: Document (PDF)

Title: Object-oriented design of flexible manufacturing systems.
Creator: Abou-Haidar, Bassam., Florida Atlantic University, Fernandez, Eduardo B.
Abstract/Description: This thesis presents a systematic method for the design and modeling of flexible manufacturing systems, using object-oriented concepts and Petri nets. In the method proposed, we first define the system components in terms of an object model consisting of hierarchical sets of classes and operations. Secondly, we model the dynamic aspects of the system using statecharts, including exceptions. As a third step, we derive Petri nets from those statecharts to realize the concurrency present in the...
Show moreThis thesis presents a systematic method for the design and modeling of flexible manufacturing systems, using object-oriented concepts and Petri nets. In the method proposed, we first define the system components in terms of an object model consisting of hierarchical sets of classes and operations. Secondly, we model the dynamic aspects of the system using statecharts, including exceptions. As a third step, we derive Petri nets from those statecharts to realize the concurrency present in the system. Finally we develop a hierarchy of controllers, corresponding to the layers of the object model, for the independent components of the system based on the Petri nets obtained in the previous step.
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Date Issued: 1993
PURL: http://purl.flvc.org/fcla/dt/14989
Subject Headings: Petri nets, Flexible manufacturing systems, Object-oriented programming (Computer science), Real-time control
Format: Document (PDF)

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