Digital Commons Network^™

From Computer To Video, Susan Michelle Masters

Theses

None provided.

Arbol De La Vida, Carisa Cannan

Theses

None provided.

English-Spanish-American Sign Language Translation Program, Janise Maria Negron

Theses

None provided.

A Three Stage Large Dynamic Range Automatic Transimpedance Control Amplifier, Karim Joseph Sikias

Theses

Long haul fiber optic communication systems require extremely sensitive, low noise amplification of the weak photo diode currents generated by the received light power. Two types of amplifiers have been used for this application: a high input impedance integrating amplifier/differentiating equalizer combination or a transimpedance amplifier. Optical receivers designed with integrating amplifiers exhibit severe low frequency drift and overload problems and are not generally used in wide dynamic range receiver design. This thesis will describe an extremely wide dynamic range transimpedance amplifier incorporating unique methods to maintain stability, wide bandwidth low pulse width distortion during overload conditions.

Soft Decision Adaptive Multiuser Cdma Detector For Asynchronous Awgn Channels, Frank Viehofer

Theses

A multiuser detector in an asynchronous, additive white Gaussian noise, codedivision multipleaccess (CDMA) channel is proposed and analyzed. It employs a combination of a decorrelator and a nonlinear multiuser interference canceler that utilizes soft tentative decisions. The weights of the canceler are adaptively adjusted, in a manner that renders the knowledge of received signal energies and the use of training sequences unnecessary. The steady state error performance of the detector is obtained and found to be superior to the performance of the same detector that utilizes hard tentative decisions.

The Photolithographic Patterning Of Porous Silicon Using Silicon Nitride And Silicon Carbide Films As Masks, Hong Wang

Theses

In this study, a simple photolithographic pattern process for porous silicon is described. The process utilizes silicon nitride or silicon carbide coated on the top of silicon wafer as a masks. Then a test pattern was projected on the sample by illumination during anodic etching in HF:ethanol solution which produced microcracks in regions illuminated during anodization. Creation of these microcracks resulted in formation of porous silicon in the underlying regions. The cracking is related to the stress in the thin film. The films with tensile stress exhibit cracking while compressive stress samples do not. Compared to silicon carbide films, silicon …

A Pharmacokinetic Model Of The Liver, Samirbhai Rameshbhai Patel

Theses

The liver is the major organ where chemical breakdown of organic and inorganic compounds takes place. A pharmacokinetic heterogeneous model was developed for the local anesthetic and antiarrhythmic drug lidocaine. It was assumed that transport and elimination of lidocaine and its metabolites are linear with concentration. Simulations were done using VisSim software on a 486 based personal computer to obtain concentration profiles for hepatic clearance and for step input of the drug and its metabolites. It was found that the rate of uptake and rate of breakdown were 0.48 min^-1 and 0.49 min^-1 respectively for lidocaine. The results …

A Systematic Approach To Defense Diversification, Sathappan Venkatachalam

Theses

The decline in defense spending has resulted in defense dependent companies seeking new markets through re-designing existing products, developing new products and restructuring their businesses. Defense diversification is defined as the process of transitioning a defense company's core capabilities (technologies, products, services) into commercial and non-Department of Defense government markets. A combination of site visits and review of the literature on defense diversification demonstrates the need for diversifying companies to adopt a systematic approach.

A concurrent new product development/product redevelopment model is proposed, based on the principles of concurrent engineering. The model consists of an eight phase development cycle and …

Performance Evaluation And Sequence Control Of An Automatedmanufacturing System, Vijaykumar D. Desai

Theses

In an automated sequential manufacturing system Programmable Logic Controllers (PLC) are widely used. As the control specification varies, the control software needs to be rewritten to accommodate the new specification. Since PLC has high flexibility, one can update the current system while it is running thereby making easier implementation. In order to design flexible, reusable and maintainable control software, a good modeling tool is required. Petri nets are such a tool. Which facilitates analysis of behavioral properties, performance evaluation, and systematic construction of discrete event simulators and controllers. In this thesis a system with one robot and five sequential work …

Silicon Optical Fiber Pressure Sensor, Jian Pan

Theses

A novel optical fiber pressure sensor based on a micromachined thin silicon diaphragm is proposed. Detail descriptions of the sensor structure, modulation principle and fabrication process are given.

The device operates on the following principle: Pressure deflects a silicon diaphragm which moves the output end of a light source fiber. The emitted light intensity is picked up and shared by two receiving fibers placed side by side. The variation of the intensity ratio in the receiving fibers caused by the relative motion of the emitting fiber can be easily converted to a linear signal versus the deflection of the silicon …

Am/Fm Digital Audio Broadcasting In-Band On-Channel Transmission, Michael Meyer

Theses

This thesis examines the in-band on-channel transmission of digital audio data for application in Digital Audio Broadcasting (DAB). The premise is to use the existing FM channels for transmission of DAB. For the FM channel used for analog audio transmission, two different scenarios are suggested and investigated.

In the first scenario, to enable overlay of the new DAB and current FM transmissions, the digital data is modulated by a direct sequence spread spectrum signal to bring the average transmitted power below that of the FM signal using the same channel. The FM signal interferes with the digital transmission and it …

Scheduling Of Flexible Manufacturing Systems With Automated Guided Vehicles Using Petri Net Models, Hua-Sheng Chiu

Theses

In this thesis, Petri net models for Flexible Manufacturing Systems (EMS) are constructed. A firing sequence of the Petri net from the initial marking to the final marking can be seen as a schedule of the modeled FMS. By using the branch-and-bound algorithm, an optimal schedule of the FMS can be obtained.

Automated Guided Vehicle Systems (AGVS) are increasingly used for material handling in factories and warehouses. An AGVS can reduce labor costs and is ready to be integrated into an automated factory. This thesis presents two AGVS models (shared and duty) which integrate the control of AGVS with the …

An Adaptive Asynchronous Cdma Receiver And Its Convergence Analysis, Lizhi Zhong

Theses

An adaptive CDMA receiver scheme assuming perfect synchronization has been generalized in this thesis to the asynchronous channel, a much more practical assumption of the real system. Similar formulas are derived and as its synchronous version, it is still near-far resistant and requires no knowldge [sic] of received signal amplitudes and training sequences. Thus, sophisticated high-precision power control and user power estimation are not necessary and the receiver is particularly useful in mobile communications since it can adjust itself adaptively to changes in the power of the users. Tile convergence and transient behavior of the receiver are also investigated and …

Simulation Study Of Particle Tracking System, Prashant B. Patel

Theses

A particle tracking system is being developed in the Particle Technology Laboratory of the Mechanical Engineering Department, at NJIT, In this thesis, an attempt is made to understand the effect of various parameters on the errors in the computed position and orientation of the sphere being tracked. Simulation results for a single transmitter assembly as well as a three transmitter assembly with 6, 9 and 17 antennae are presented. The effects of the level of noise in the voltages on the solution for the single transmitter assembly and three transmitter assembly are discussed. The concept of virtual antenna is introduced …

Development Of An Expert System To Facilitate A Pump Manufacturing/Warehouse Facility, Muhammad Mutahir Ghauri

Theses

The objective of this study is to evaluate the effectiveness of utilizing an expert system technology as it relates to manufacturing. It appears that our industries are still uncertain about this technology. In the first phase of this study, procedure for deployment of this technology is discussed. Secondly a knowledge-based expert system is developed, using a VP-Expert microcomputer shell. The system is made of three modules, inventory module, cost analysis module, and decision making module (for the selection of pumps).

A warehouse was selected for the analysis, which carries the finished product in the form of pumps. The quantities and …

The Cyberspace Workplace : An Argument And Design For The Virtual Office, Richard C. Jones

Theses

The Virtual Office has become a viable solution to the need for a changing workplace. Technology, design, and a redefinition of work have combined to create something entirely new. An office not of walls and doors but of electronic peripherals, networks, and global digital communication. This concept allows workers to be free from their physical surrounding to conduct work from remote locations or in some instances in a totally electronic world commonly referred to as Cyberspace. Through research, interviews, and problem solving the virtual office concept presented will redefine the use of space as we know it. These concepts will …

The Mobile Satellite Service (Mss) Systems For Global Personal Communications, Kiho Lee

Theses

A worldwide interest has arisen on personal communications via satellite systems. The recently proposed mobile satellite service(MSS) systems are categorized four areas: geostationary earth orbit(GEO) systems, medium earth orbit(MEO) systems, low earth orbit(LEO) systems, and highly elliptical orbit(HEO) systems. Most of the systems in each category are introduced and explained including some technical details. The communication links and orbital constellations of some systems are analyzed and compared with different categories, and with different systems. Some economical aspects of the systems are mentioned. The regulatory issues about frequency spectrum allocation, and the current technical trends in these systems are summarized.

Ultra-Thin Silicon Wafer Bonding, Diyu Yan

Theses

In this thesis the history and recent developments on the silicon direct bonding technique are reviewed. The growing applications of this technique in SOI, SOS and MEMS areas, difficulties and disadvantages of various bonding processes are discussed. A direct bonding procedure for attaching ultra-thin wafers less than 200 μm thick to substrate wafers is developed and described in detail. Difficulties in handling, aligning and annealing ultra-thin wafers are reported. Wafers of different doping concentration, thickness, surface roughness and chemical characteristics are tested for bondability. Methods to minimize voids and other failure mechanisms are proposed. A photodetector is designed based on …

Requirements, Design And Business Process Reengineering As Vital Parts Of Any System Development Methodology, Alicja Ruszala

Theses

This thesis analyzes different aspects of system development life cycle, concentrating on the requirements and design stages. It describes various methodologies, methods and tools that have been developed over the years. It evaluates them and compares them against each other. Finally a conclusion is made that there is a very important stage missing in the system development life cycle, which is the Business Process Reengineering Stage.

Design Of A Lapd Interface Using The T7130 Multichannel Lapd Controller And The T715a Synchronous Protocol Data Formatter, Hopeton Saint John Walker

Theses

As the ISDN telecommunications standard gains acceptance, there is an ever increasing need for intelligent interfaces to implement the L2 protocol known as LAPD. The T7130 MLC, the T7115A SPYDER-T and the MC68020 microprocessor were used to design a LAPD Interface that conforms to the LAPD protocol as specified by CCITT.

The LAPD Interface utilizes a Shared Memory Array which is attached to the Data Link Processors in a single bus configuration. The SMA Arbitration Control allows access to the SMA on a prioritized basis and was implemented as a state machine using PAL's. L2 drivers and L3 management software …

The Baltic States And Tourism Development, Ann-Christine Hellstrand

Theses

Not listed.

Developing Career Satisfaction For Culinarians Through The American Restaurant 2000 A.D., Paul Sorgule

Theses

Not listed.

An Examination Of Service Quality: An Internal Study, Andrea Wolak

Theses

Customer service has been the focus of companies for the past decade. In Rochester, New York, businesses large and small have demonstrated concern for service excellence. Quality of service is defined by the customer. For one Rochester company, this case study will set parameters to determine whether gaps are present between corporate client expectations and employee perception. Tabulated gaps can be identified and narrowed to secure the company as a stronger competitor of customer satisfaction.

General Managers And Four-Year Students Evaluate Attributes, Qualities, Competence And Skills For Hotel Management Entry-Level Positions: A Case Study, Po-Fen Chen

Theses

The issues of curriculum relevancy and attitudinal learning outcomes in preparing hospitality management students to meet industry needs are the focuses of this study. This study attempts to assess whether or not attitudes and values offour-year hospitality program students change as a result of the learning processes in their curricula. A 40 item questionnaire was developed and used to survey the three populations in the study; freshmen and seniors of a four-year hospitality management program and hotel general managers who have hired Co-op students and graduates from the program. The survey results were compared between the groups as follows: Freshmen …

The Identification Of Work-Environment Factors Effecting Dysfunctional Employee Turnover At A Resort Property: A Case Study, Christopher Menna

Theses

The purpose of this study is to identify a list of work-environment factors present at a resort property that participant employees feel effect employee turnover, and consequently interfere with good customer service. This was accomplished through extensive in-depth interviews conducted with 28 systematically selected employees from all departments of the property studied. The interview schedule utilized was primarily unstructured to provide the respondents with the greatest latitude in expressing their impressions. The results of the interviews revealed specific patterns of responses relating only to the various departments of the participants. The results also revealed two general patterns of responses present …

Puerto Rico 2000: Building A New Future, Griselle Boria-Marcano

Theses

This study focuses on the identification of limiting conditions affecting the tourism industry in Puerto Rico. In order to provide a clear understanding of the tourism situation of the island, a broad outlook of the tourism performance is presented. It includes an economic background of Puerto Rico and the tourism activity, as well as a discussion of the areas involved and their problematic issues. The information gathered for this study was developed through personal interviews and primary data sources. While searching for problematic issues affecting the tourism industry, eight limits to growth were identified as most relevant: High Hotel Room …

A Model: An Organization That Fosters Internal Motivation, Sheila Barber

Theses

This thesis provides a model of an organization that can maintain a continuous level of employee internal motivation. It does this by comparing the current situation with a model of a new conceptualization. It then compares the current situation and the modeled perspective to decipher what gaps are preventing the model from being implemented. From here it defines action strategies that can be used to eliminate the gaps and make it a baseline to structure the model so that the tasks completed and the organization are able to enhance the members internal motivation. The model begins with motivated leaders and …

A Decision Making Environment The Healthcare Industry, Terry Ovenshire

Theses

This was a pilot study on the decision making environments in the health care industry. A critical incident questionnaire which was developed by Boone & Kilmann (1988) and later used by Janet Barnard (1992) in her research "Decision Environments of Small Firms" was adapted. The questionnaires were sent to 201 employees at the facility in the first sampling. A response of almost 50% was received, but the food service department was only represented by 3 respondents. It was decided that a second sampling would be sent to that department to assure a large enough set of respondents to use as …

The 1995 Corporate Travel Index In Taiwan, Mei-Hsiang Yu

Theses

With the growth of its economy. Taiwan has also become more of a business travel destination. In 1994, the Taiwan's government and the tourism industry have made great efforts in promoting the tourism trade. In addition, hotel capacity and airline accessibility into Taiwan have increased. These factors have generated new opportunities and competition in Taiwan's travel industry. Business travel is indeed a controllable expense, but efficient corporate travel management requires companies to do research in the marketplace, to negotiate effectively with travel suppliers, to plan their travel arrangements carefully, and to organize the payment reports and reimbursement. The Corporate Travel …

The Impact Of Videoconferencing On The Corporate Travel Industry, Mary Elizabeth Grieco

Theses

The wave of the future for businesses is technology. New technology is evolving everyday and in particular, the videoconferencing industry is steadily growing. The corporate travel industry may be influenced by videoconferencing. The focus of this study was to identify the impacts of videoconferencing on management decisions for employee travel. A review of literature, focusing on information technology and videoconferencing was completed. Information was gathered by studying industry journals and current publications. A questionnaire was used to collect further research. The survey was sent to decision makers for employee travel. The questionnaire was designed to capture both present and future …