Digital Commons Network^™

The Development Of An Embedded Wireless Modem Conforming To Advanced Mobile Phone System And Cellular Digital Packet Data Standards, Xin Ren

Theses

Introduced by AT&T Bell Labs in 1970s, today Advanced Mobile Phone Systems (AMPS) - a first generation analog cellular system serve millions of customers in the United States and 55 other countries, and the number of subscribers is still rapidly increasing. Although digital cellular systems are emerging in recent years, research efforts are still being made to the enhancement of AMPS systems because of their popularity. An example is the new Cellular Digital Packet Data (CDPD) standard announced in 1994. CDPD is an overlay of the existing AMPS, and has the capability of transmitting data packets over such an analog …

Remediation And Reuse Of Chromium Contaminated Soils Through Cold Top Ex-Site Vitrification, Wiwat Kamolpornwijit

Theses

More than 150 sites in Hudson County, New Jersey are identified as chromium contaminated sites. Hexavalent chromium, highly soluble in water, is considered as an environmental and health hazard, classified as a group A human carcinogen. In this research, the feasibility was performed to study the possibility of remediation of chromium contaminated soil by ex-situ vitrification and to evaluate reuse potential of vitrified products as highway construction aggregate. A series of physical and chemical analysis was conducted on nine soil samples collected from different chromium contaminated sites. Results were analyzed for their compatibility for vitrification. Sand and carbon were added …

The Effects Of Chromated Copper-Arsenate (Cca) Pressure-Treated Wood On Local Sediments And Benthos In A Freshwater Lake, William A. Romeo

Theses

This study looked at the sediment and benthic organism effects of exposure to a Chromated Copper-Arsenate (CCA) treated wood bulkhead in a lake environment with respect to 1) the leaching and accumulation of chromium, copper and arsenic in the nearby sediments, 2) accumulation of these metals in local benthic organisms and 3) the effects of these metals on the local benthic community structure. Sediment samples, taken at regular distances away from a CCA bulkhead and three reference areas in a freshwater lake in Wayne, NJ, were sieved to remove the fine particle fraction (<70µm) which was then analyzed for the metals of concern. Benthic organisms were sampled at the same locations, enumerated, identified, dried and also analyzed for the metals in question. Analysis of sediment metal concentrations revealed high levels of copper at all sampling locations. This was attributed to the annual addition and accumulation Of CuS0₄ added to the lake. There …

Comparison Of Adaptive Radar Algorithms : Transformed Smi, Eigencanceler, And Smi, Chaitanya H. Kathiari

Theses

Advanced airborne radars must perform target detection in the presence of interference and heavy clutter. In many applications, the practical usefulness of adaptive arrays is limited by their convergence rate. In this paper, we first analyze the performance of the SMI method. Then, two other methods, the transformed SMI and the eigencanceler, both based on the principle component inversion (PCI) technique, are described and analyzed by simulation. It is shown by simulation based comparison that the transformed SMI and the Eigencanceler outperform the SMI method. It is also shown that the transformed SMI and the eigencanceler has higher convergence rate …

Sensivity Analysis And Design Calculations With Biofiltration Models, Michael Lawrence Cohen

Theses

Biofiltration is a new technology for biological treatment of volatile organic compounds present in airstreams. It is a complex process and thus, engineering models which attempt to describe it are by necessity very involved and contain a large number of parameters.

In this study, two models describing biofiltration of airstreams carrying a single pollutant (VOC) were used in detailed parameter-sensitivity studies. One model concerned biofiltration under steady-state conditions, while the second described the transient behavior of the process. The intent of the sensitivity studies was to determine which model parameters need to be known with accuracy in order to allow …

Comparison Of Reductive Dehalogenation By Microbial Populations On Adsorptive Versus Non-Adsorptive Bioreactor Support Materials, Linda S. Colella

Theses

The overall performance of two bioreactors was studied. The reactor with a wood-based activated carbon as a biosupport completely dehalogenated a higher feed concentration of trichlorophenol than that with Manville beads. The carbon reactor was further characterized by the development of adsorption isotherms for most of the class of chlorophenols. Competitive adsorption wag investigated using an anaerobic medium, and a lignite-based carbon was studied for comparison. The order of adsorption strength on both carbons is trichloropenols> dichlorophenols> monochlorophenols, with the wood-based carbon having higher overall adsorption than the lignite-based carbon. The presence of the anaerobic medium decreased the extent of …

Implementation Of A Three-Dimensional Non-Intrusive Particle Tracking System, Vivek Gupta

Theses

A Three-Dimensional Non-Intrusive Particle Tracking System has been developed at NJIT's Particle Technology Center to provide experimental results for validating theories being developed in the field of Particle Technology. The system utilizes the principle of magnetic induction between several high-frequency miniature transmitters mounted inside a sphere and a set of receiving loop antennae mounted outside the experimental apparatus. Basic theories and algorithms for the tracking system have already been developed. The focus of this thesis is to make the tracking system more accurate, reliable and user-friendly and to apply it to the study of vibrated beds and chute flows. Various …

Characterization Of Low Pressure Chemically Vapor Deposited Boron Nitride Films As Low Dielectric Constant Materials, Manish Narayan

Theses

Boron nitride thin films were synthesized on Si and quartz wafers by low pressure chemical vapor deposition using borane triethylamine complex and ammonia as precursors. The films were processed at 400°C, 475°C and 550°C at a constant pressure of 0.5 Torr and at different precursor flow ratios.

The films deposited were uniform, amorphous and the composition of the films varied with deposition temperature and precursor flow ratios. The thickness of the film increased with increasing flow ratio, but, decreased with increasing temperature. The stresses in the film were either mildly tensile or compressive.

The least dielectric constant for the films …

Construction Of Accurate Molecular Models Using Laser Stereolithography And Determination Of Nmr Spectra For Amiloride Hydrochloride And Its Free Base, Ana Deborah Ofsievich

Theses

Accurate molecular models were constructed by a rapid prototyping process, called stereolithography. This process uses a computer-controlled laser to cure and solidify a photosensitive liquid polymer. Using a computer-aided design (CAD) program, spheres of appropriate van der Waals or CPK radii were drawn and placed in the three dimensional CAD space, in accordance with the atomic coordinates obtained from quantum mechanical calculations and from neutron diffraction data. These design data were used to drive the stereolithography system where the models were built in the same shape as the CAD image. The models built for the purpose of this work consisted …

Continuous Monitoring Of Volatile Organic Compound Emissions Using Microtrap Based Injection Technique And Gas Chromatography, Wenjun Chen

Theses

A microtrap is made by packing a small diameter tubing with an adsorbent. The microtrap can be rapidly heated with a pulse of electrical current resulting in a sharp desorption that can act as an injection for GC separation. The microtrap can be used in several configurations to concentrate and inject sample in continuous, on-line monitoring system.

In this research a laboratory scale catalytic incinerator was set up and volatile organic compounds in the incinerator effluents were monitored using the microtrap based injection systems. The detection systems used were gas chromatography and nonmethane organic carbon (NMOC) analyzer. Conventional sample valve, …

Determination Of Physical Parameters Affecting Biofiltration Of Vocs, Steven Matthew Wojdyla

Theses

This study dealt with the determination of physical and design parameters affecting the transient behavior of classical biofilters employed in removal of VOCs from airstreams. The column packing material consisted of a mixture of peat and perlite particles (2:3, v:v). The design parameters investigated were the density of the packing material, its porosity, and the void fraction of the filter-bed. The physical parameters investigated were the characteristics of adsorption equilibrium between VOCs and packing material, and the mass transfer coefficients of VOCs to the packing material.

The density of the packing material was found to be 0.679 x 106 g-packing/ …

Analysis Of Calibration, Robustness, Detection Of Space-Time Adaptive Rada Using Experimental Data, Murat O. Berin

Theses

Signal cancellation effects in adaptive array radar are studied under non ideal conditions when there is a mismatch between the true desired signal and the presumed theoretical desired signal. This mismatch results in decreased performance when the estimated correlation matrix has a large desired signal component. The performance of the sample matrix inversion (SMI) method is compared to the eigenanalysis-based eigencanceler method. Both analytical results and the processing on the experimental data from the Mountaintop Program, show that eigenanalysis-based adaptive beamformers have greater robustness to signal cancellation effects than the SMI method. Also, the calibration of the recorded data, and …

Investigation Of Potential Oxygen Defect Mechanism Of Persistent Photoconductivity And Photoinduced Superconductivity In Yba2cu3ox, Denise Catherine Chew

Theses

In this thesis work, we conclude that oxygen vacancy defects play a fundamental role in the PPC/PISC mechanism and identify the oxygen defects as F centers (an oxygen vacancy which traps two electrons) or F⁺ centers. Also, the correlation between the peaks observed in the luminescence spectra and those observed in the wavelength dependence of PPC suggest that the photogeneration of charges and their annihilation via luminescent recombination occur in the same level (Cu-O chains) of the YBa₂Cu₃O_x crystal. Previous models had assigned the peaks in the PPC excitation spectrum to charge transfer in …

A Study Of Curriculum Development And Style: Implemented In Culinary Arts, Karen Leach

Theses

Not listed.

What Are The Impediments To The Effective Transfer Of Training Information Of Technology Advanced Equipment In The Food Service Industry, Kenneth Megarr

Theses

Increasingly, commercial food equipment manufacturers are producing products that operate using electronic touch controls and microprocessors to assist in the production of food. The purpose of this study is to determine if impediments of the transfer of information in the care, maintenance and most importantly use and operation of technologically advanced food service equipment exist. And, if in fact they do, what can be done to eliminate these impediments. It is the opinion of the author that there may lie an inherent rift between the advancement of technology on food service equipment and either the training that accompanies such equipment …

Impact Of A Hospital-Based Department Of Food And Nutrition Newsletter In Changing Eating Behaviors Of Hospital Employees, Mary M. Crockett

Theses

The impact of a weekly nutrition newsletter upon the eating behavior of hospital employees was examined in this study. Ten percent (175) of employees who eat in a hospital cafeteria were surveyed before, and three months after, the initiation of a nutrition newsletter. Each survey had two parts. The first part was designed to gather demographic information and to assess employee satisfaction with the cafeteria. The second part was a self-reported eating behavior questionnaire comprised of seventeen questions with three possible scores for each response. Information gathered in part one of the first survey was used to make changes to …

Comparative Analysis Of Airline Reservation Systems On The Internet In Terms Of Convenience, Somyot Wattanakamolchai

Theses

The Internet is expanding at a rapid pace every day as well as various groups of people are trying to put their transactions on the Net including travel industry's people. Many travel agencies and airline companies today launch their travel services on the Web. These services include checking flight schedule and availability and ticket reservations and purchases. The focus of this study was to analyze these travel services on the Internet to find out whether they were convenient for public users. A review of literature, focusing on travel agencies and the Internet and the dimension of convenience for using the …

Effectiveness Of The Sanitation Certification Process, Ronald Manfredo

Theses

The objective of the survey was to illustrate that sanitation certification leads to a cleaner kitchen. Questionnaires were sent to 180 commercial establishments varying from restaurants, hotels, hospitals, and resorts. Statistical analysis results were calculated using Minitab statistical analysis computer program. Results from the survey indicated that 69 percent of the respondents were self-operated. Management in over 58 percent of the response didn't require their staff to be certified in a sanitation program. However, 57 percent of the managers were required to be certified in some type of program. Sixty nine percent of the respondents felt a course and an …

Ontario Superhost... What Is Its Value To Service Providers?, Susan Hamer

Theses

The purpose of this study is to examine the Ontario SuperHost Seminar and determine the value of its content, in the workplace, according to the surveyed participants. The sample group included employees from various businesses and companies who held positions at levels ranging from President and C.E.O., department managers, municipal government employees to fast-food counter staff, and general citizens. The surveyed participants live and work in villages, towns and cities in South Central Ontario. The results of the survey indicate that the Ontario SuperHost Seminar is beneficial to improving a number of interpersonal skills required by service providers in order …

Measuring The Effectiveness Of Service Management On Priority Assessment: A Case Study For The Ritz-Carlton Hotel Company, Andrew Jacobson

Theses

This study addresses three main questions of how effective is the Ritz-Carlton on service process management. They are 1) What process management do they use, 2) What are the top three priorities and 3) How do they measure what they are measuring against. These three questions were asked how the Ritz-Carlton were able to maintain their excellent quality after winning the Malcolm Baldridge National Quality Award. To address these questions, two main approaches were taken. Two interviews were conducted, On March 29th, 1995 with Mr. Patrick Mene, Director of Quality Control, at the Corporate Office in Buckhead, Georgia and August …

Assessment Of Changes In The Decision Making Environment In A Rochester, Ny Hotel: A 1996 Case Study, Salaya Chermsirivattana

Theses

This was a third year case study on the detection of changes in the structures and processes that support effective decision making within a hotel in Rochester, NY The case study is considered to be a developmental research using a longitudinal approach in a present perspective. The purpose for this case study was to look at changes that occurred in these two sets of years: (1) 1994 and 1996; and (2) 1995 and 1996. The results found in 1996' s study were compared to those found by Koo in 1994 and Stubblebine in 1995 with the use of the "Organizational …

Post Service Customer Satisfaction Measurement, Jason Karr

Theses

This study provides restauranteurs with information on how to create, implement and evaluate a strategy of customer satisfaction measurement after the service has been delivered and the respective patrons have left the establishment. By measuring and evaluating customers perceptions of the quality of service they received, an organization can determine how they are doing both internally and externally. Application of this information into the business environments will ultimately effect the "moments of truth" with the customers by promoting a better organizational understanding of the customers' wants and needs as well as identifying areas of service that require adjustments.

Deconstruction, Existentialism, And Art, Ryutaro Furuhashi

Theses

My thesis is about deconstruction of existentialism through visual images, or more precisely, deconstructive visual representations of existential themes. The question of human existence has been a primal interest in my work. What is the meaning of existence? How can I make sense of man's unique intellectual capacity to question one's own existence? My concern is not so much about coming up with the answer, but to have a language to disclose the condition. In the past, my work was merely the ambiguous expression of the existential feeling without any particular conceptual foundation. My work is now a manifestation of …

Rit Center For Digital Media: An Imperative For Change, James Parasole

Theses

Not provided.

Investigation Into The Use Of The World Wide Web As An Interface For Distributing Electronic Documents To And From A Remote Digital Color Printing Site, Ronald J. Recene

Theses

The World Wide Web and Internet are the most talked-about and fastest-growing mediums for information and electronic document distribution. Their growth has, and will continue to have, a great impact on all forms of media, due to their potential to reach millions of individuals. This project demonstrates the capabilities of the World Wide Web to perform, not only as a publishing vehicle, but as a means for communication and document distribution to a digital color printing facility. In order to show this, a Web site was built that incorporated the utilities needed for the successful exchange of data, such as …

Flash Adc Using 2Μm Cmos P-Well Technology : Design And Test, Joseph E. Levinson

Theses

This thesis describes the design, implementation and test for a new CMOS analog-to-digital converter IC chip. In designing the analog-to-digital converter in this thesis a radically different comparator design that is only available with CMOS logic. The design utilizes a single CMOS inverter as an ultra-high gain amplifier. This approach reduces the circuit dependence upon matching of the transistors similar to the traditional method. This new design requires less area since the comparator utilizes fewer transistors.

Flash analog-to-digital converters use 2" - 1 comparators to do a single conversion where n is the number of bits used. These comparators are …

Acidic Marine Biotoxins Implicated In Diarrhetic Shellfish Poisoning, Eoin P. Carmody

Theses

An okadaic acid (OA) etiology has been demonstrated for most outbreaks of diarrhetic shellfish poisoning (DSP) in Europe, An isomer of OA, dinophysistoxin-2 (DTX-2), has recently been found in Irish waters and, in 1991 and 1994, was the major toxin during prolonged infestations in cultivated mussels (Mytilus edulis) along the south-west coast of Ireland.

The OA class of DSP toxins have been analysed by HPLC using modified versions of three established fluorescent derivatisation methods. A ‘dual tag’ method for the confirmation of specific toxins has also been developed.

Survey work has been carried out over the past four years on …

The Effect Of Participation In An Academic Support Group In Combination With Individual Mentoring Upon At Risk Students Grade Point Average, Robyn Greene

Theses

Studies involving the use of small groups as an academic tool have indicated success in the student's academic and social advancement. It is a widely held belief that self-concept or self-esteem is involved centrally in the learning process either as a contributing cause or an important outcome (O'Dell, Rak, Chermont, & Hamlin; 1994). According to systems theorists the implementation of group intervention will allow an increase of self-concept which constitutes a first order change (Bateson, 1972; Watzlwick, Weakland & Fisch, 197 4; Beckvar & Beckvar, 1991). Students who participate in an academic support group which results in an increased grade …

The Relationship Between Announced Layoffs And Financial Performance, Carol E, Goldman

Theses

This thesis focuses on the impact of downsizing on financial performance. Downsizing has become a catchall term for plant closures, eliminating entire layers of management, and even subcontracting large amounts of a firm's operations. Although many American firms are downsizing they often do hot consider what they are trying to achieve by cutting jobs or closing plants. Generally, U.S. companies are eliminating - jobs in their organizations in an attempt to cut costs believing that to do so will increase profitability and result in more efficient organizations. It is naturally assumed that any strategic change in a corporation, such as …

Telecomuting, Donna Marie Cunningham Baringer

Theses

Telecommuting is a form of working from a remote location that relies on telecommunications. Technological progress has resulted in an increasing number of personnel who are now able to telecommute from home. The rising numbers of telecommuters has resulted in an increase of published studies on this topic. This project relies on these and on interviews with several people actively involved in the field.

A telecenter is a type of telecommuting which offers companies the opportunity to lease workspace for their employees. The Midwest region is not familiar with telecenters which are more prominent in the state of California. The …