Digital Commons Network^™

Teletype Network Communication Device, Mark Clyman

Theses

None provided.

Pattern, The Visual Mathematics: A Search For Logical Connections In Design Through Mathematics, Science, And Multicultural Arts, Seung-Eun Lee

Theses

None provided.

The Reactions Of Nox With Diesel Soot Over Cu-Zsm-5 Catalyst, Shu Sun

Theses

Air pollution from the exhaust of Diesel engines consisting of relatively high concentrations of NO_x and particulates is a difficult problem to overcome because no fully effective technology to control these emission is available. The existing methods to reduce NO_x and soot can not satisfy the provisions of the 1990 CAAA (Clean Air Act Amendment). Cu-ZSM-5, a catalyst in which Cu has been ion-exchanged with H+, can catalyze the decomposition of NO to N₂ and O₂ and reduction to N₂ and O₂ with light hydrocarbons such as propene or Diesel soot in the presence …

Oxidation Of Isobutane And Isobutene Reaction Pathways And Detailed Mechanism, Chiung-Ju Chen

Theses

A reaction mechanism consisting of 248 elementary reactions and 138 species has been developed to model experimental systems - decomposition of 2,2,3,3 tetramethylbutane in the presence of oxygen and oxidation of isobutene. This elementary reaction mechanism based on two important reaction systems: tert-butyl radical with O₂ and allylic isobutenyl radical with O₂, plus their subsystems, such as isobutene + HO₂, isobutene + OH and allylic isobuteny1hydroxy + O₂. Thermochernical kinetic parameters are developed for each elementary reaction and a chemical activation kinetic analysis using quantum RiceRamsperger-Kassel (QRRK) theory for k(E) and modified strong …

Bringing Ideas Back To The Evolution Of Design, Ayca Tuzmen

Theses

This thesis is an exploration into the evolution of design. It attempts to develop an awareness of the effectiveness of what we do as designers and users to improve design. To achieve this purpose, it elaborates on some of the implications of paradigms which have emerged in design evolution. It presents some of the evolutionary theories and their analogies. These theories and analogies develop a view of design evolution - a conception of design as a process which moves from a lower to a higher state. With this conception, concern is directed at the identification of past and current design …

Usability Of Hypertext : Factors Affecting The Construction Of Meaning, Kathryn L. King

Theses

One type of hypertext application, information retrieval, has become increasingly popular and accessible due to the explosion of activity occurring on the World Wide Web. These hypertext documents are referred to as web sites. Readers can now access a multitude of web sites and retrieve a wide variety of information.

The uniqueness of a hypertext document centers around the concept that text is broken into an array of non-sequential text chunks, or nodes, which are connected through links. The hypertext reading can be considered an interactive experience requiring the reader to effectively navigate the document. The potentially complex link and …

Measurement Of The Electroencephalogram (Eeg) Coherence, Atmospheric Noise, And Schumann Resonances In Group Meditation, Douglas A. Newandee

Theses

Electrical activity in the human body was investigated using EEG and ECG measurements while subjects remained with eyes open, eyes closed and in a meditation state. During these measurements, additional antennas were attached to the equipment to record atmospheric noise and signal activity simultaneously. The obtained data was analyzed and various observations were made. Processed data based on antenna signals clearly showed the presence of man-made signals, having narrow spectral widths that could be treated as atmospheric noise in the frequency range up to 50 Hz. In addition, signals clustered around 7.8, 14.1, 20.3, 26.4, and 32.5 Hz were observed …

Stratospheric Ozone Layer Depletion : A Computer Aided Case Study, James M. Lipuma

Theses

In industries today, there is a desire to stop pollution before it starts, through the process of pollution prevention. Unfortunately, many university level students are not exposed to the thinking process involved in environmental problem solving early enough in their academic career, if they are exposed to it at all. The goal of this thesis is to develop and to evaluate an interdisciplinary case-study about the depletion of the stratospheric ozone layer by chlorofluorocarbons (CFCs). This case-study will be used to teach first year chemistry students about environmental problem solving. The case study was assembled from existing literature according to …

Relay Ladder Logic And Petri Nets For Discrete Event Control Design : A Comparative Study, Edward Twiss

Theses

In the 1960's and earlier discrete event systems (DES) were controlled by hardwired electromechanical relay systems. In 1969 an electronic programmable logic controller (PLC) was introduced. PLC's have been programmed utilizing relay ladder logic (RLL). RLL is a graphical programming language with software "devices" used to emulate electromechanical devices. RLL programs, however, often become large and difficult to understand because its graphical representation of physical switching devices obscures the discrete event dynamics inherent in the process to be controlled. Petri nets are a methodology for modeling discrete event systems (DES). Using a Petri net based controller, a control strategy could …

Environmental Communication : Theory And Practice, Mary Mccarney Mcmanus

Theses

The present study examines the relationship between environmental communication theory and practice. The focus of the case study is to examine the formal elements of an environmental document--the Industrial Pollution Prevention Planning guidelines published by the New Jersey Department of Environmental Protection (NJDEP)--and the process by which this document was created. This study of product and process allows a methodology to be developed by which the complexities of environmental communication may be better understood.

Dynamic Mechanical Analysis Of Particulate Dental Composites, Minu Parekh

Theses

Typically, dental composites are used in different configurations and situations. When a cavity forms at the occlusal surface of a posterior tooth, a class I and class II filling is used, depending on the extent and nature of the cavity formed. These fillings have to be designed to resist mechanical abrasion and occlusal stress during chewing, bruxing and other tooth functions. Class IV fillings are also designed to resist biting stress. In these applications composites with high filler loading with filler particles of size >0.6μm are used. These composites are typically known as minifill or midifill composites. When more than …

A Theoretical And Empirical Analysis On Efficiency Of The Foreign Exchange Markets : An Empirical Evaluation Of The British Pound, French Franc And Canadian Dollar Testing For Cointegration And Unbiasedness, Panagiotis Paleologos

Theses

This paper discusses the important aspects of efficiency, expectations, and risk in the foreign exchange market. First, a brief presentation of the existing single-equation structural models of exchange-rate determination is given. A mathematical efficiency specification model is defined which employs of a system of interrelated equations testing the random walk and unbiasedness hypothesis. The model is validated by analyzing fluctuations in the spot and forward foreign exchange rates. Utilizing a regression estimation and many different specification and diagnostic tests for the series and the error terms (residuals), this study addresses the efficiency of the English, Canadian and French foreign exchange …

Mass Transfer Of Pryene Between A Solid Phase And Oil/Water Suspensions, Sachin Ashok Purekar

Theses

This study dealt with understanding the partitioning of pyrene between water and mineral oil, and the mass transfer of pyrene from solid particles to oil/water suspensions.

It was found that when pyrene is dissolved in mineral oil, the amount transferred to water is negligible even after 10 days of phase contact.

Glass beads and sand were used as model solid phases to simulate soil and PAH (pyrene)-contaminated industrial sludges.

The transfer of pyrene from glass beads to mineral oil when no water phase is present was quantified. Mass transfer coefficients, and their dependence on the rate of environment shaking were …

A New Concept In Artificial Ligament And Tendons Modeling : Finite Element Analysis, Miroslaw Sokol

Theses

Reconstruction of the Anterior Cruciate Ligament (ACL) has been a major focus in sports medicine for over twenty years. Severe or unrepairable damage of the ACL due to sport injury is a major problem faced by orthopedic surgeons and engineers. To successfully replace or reconstruct an injured ACL, the mechanical properties as well as the dimensional limitation of the material used must be similar to the biological ligaments. Although excessive literature describes experimental investigation on the mechanical property and clinical application of the ligament material, there is no analytical study that describes strains, stresses, and endurance in the bone/ligament/bone complex. …

Design And Fabrication Of A Miniature Pressure Sensor Head Using Direct Bonded Ultra-Thin Silicon Wafers, Chad Eugene Statler

Theses

A miniature pressure sensor head is designed and fabricated using an ultra-thin silicon membrane directly bonded to an excimer laser micromachined substrate. The pressure sensor head has its intended implementation as part of an optically interrogated device with sensitivity to pressures ranging from 0.5 to 4.0 MPa. The pressure range design is shown to be easily adjusted by tailoring the thickness of the membrane wafer. The fabrication process features numerous advantages over existing pressure sensor construction technology including a maskless procedure and no chemical etching or mechanical thinning necessary to form the membrane after bonding. An optic lever is constructed …

Pollution Prevention In The New Jersey Chemical Industry : Motivations And Barriers To Commitment, Judith A. Thornton

Theses

This study of the New Jersey Chemical Industry identifies the primary elements that lead to or inhibit company commitments to pollution prevention. A direct measure of facility pollution prevention commitment is developed that takes into account: organizational support attributes, past reductions achievements, current methods implementation, process reduction goals, and special environmental initiatives. The "P2 Commitment Index" allows for categorization of facilities so that the needs and interests of varying groups may be differentiated.

Higher level commitments are associated with: establishment of company pollution prevention policy, setting of prioritized facility goals, and measurement and reporting on pollution prevention progress. Facilities at …

Simple Fast Vector Quantization Of The Line Spectral Frequencies, Jin Zhou

Theses

Speech coding has been of interest to communication specialists for years. A number of technologies for describing and transmitting the speech spectral envelope have been studied. Among them, the Vector Quantization (VQ) of Line Spectral Frequencies (LSF) is receiving more attention because of its good rate-distortion performance. Typically, about 30 bits are assigned to code 10-dimensional LSF vectors with a resulting spectral distortion of less than ldB. However, 30-bit full-search VQ is totally impractical in terms of both computational complexity and memory space. Various standard suboptimal, low-complexity VQ techniques have been used for coding the LSF's in the literature. The …

Advanced Characterization And Leaching Behavior Of Hexavalent And Trivalent Chromium From Waste Material, Erik Moerman

Theses

In this thesis we employed advanced characterization techniques such as XRF, XRD, XPS, SEM, and EDS to provide detailed information about the chromium waste _ specifically chromium valence states (Cr(VI) and Cr(III)), and their chemical association with other phases in the waste matrix.

The removal of Cr(VI) was accomplished by leaching with aqueous solutions containing inorganic anions such as Cl^-, SO₄^2-, PO₄^3- and others. Cr(VI) can be released from the waste by a combination of desorption and ion exchange processes. The efficiency and kinetics of displacing CrO₄^2- from the waste by …

Remote Measurement Calibration In Power System, Xiaofeng Li

Theses

Power system reliability and economy of operation require accurate measurements of current, voltage, real and reactive powers. These measurements are transmitted to a control center of a power system for monitoring, display, and use in power system real-time analysis. The number of measurements is in thousands. Routinely field technicians must calibrate transducers and/or determine other sources of metering errors. Due to the large number of measurements and the time required to check each individual measurement, field calibration procedures are impractical, expensive, and not timely.

There has been a need for a more efficient approach to measurement calibration and identification of …

Beef You Feel Good About, Courtney Grim

Theses

None provided.

One, C. (Catherine Jaruzel

Theses

None provided.

Tashlich - "And You Shall Cast", Rachel Kanter

Theses

Art is my means of communication. It is a visual statement of my conscience and soul. Clay is the medium I use, to help me create my statement. I use it as my visual typewriter. It is how I speak without writing, and communicate to people through their eyes. Clay is an extension of my mind and hands. The development of the initial idea, to the actual work of art, happens naturally when I use clay. It enables my ideas to become dimensional realities. The following thesis is a documentation of the process I used, from the preliminary thoughts, to …

208 Mill Street: An Historical Renovation, Lisa Ilene Studint

Theses

None provided.

Digital Archiving And Reproduction Of Black And White Photography, Susan J. Hicks

Theses

Capturing and reproducing black and white images are common problems for high quality print reproduction. This study compared the monotone reproduction quality of the Kodak Photo CD Master technology to the standard methods currently being employed using high resolution scanners such as the Agfa Horizon Scanner and the Optronics ColorGetter II. The Kodak Photo CD Master and the Optronics ColorGetter II were used to scan the original 35mm black and white film negatives. The negatives selected represent the various tonal ranges encountered by professional photographers. High key and low key images were included in the selection since these are the …

Facsimile Reproductions Of Art With The Use Of A Digital Camera System, Jamisen Gingerelli

Theses

Reproductions of original works of art have played a major role in the existence and growth of the graphic arts over the centuries. The one concept that has not changed over time is the difficulty in reproducing art that is true to the original. Using a high-end scanning system is one known method that is able to achieve high quality reproductions. However, it has several limitations. The purpose of this research was to verify that a digital camera system combined with color separation software can be used as an alternative technique to create facsimile reproductions of art. Five pieces of …

Investigation Into The Capturing, Manipulating, Calibrating And Outputting Of Black And White Images On A Xerox Docutech, Sebastian Schwarz

Theses

It is the purpose of this investigation to determine whether or not the output quality of black and white images on a Xerox Docutech can be enhanced. The Docutech is a black and white digital printing device. In times of a growing demand for on-demand printing and publishing, the Docutech not only has to reproduce text and graphics properly but also has to cope with the increasing task of rendering images. Although there are multiple options to improve the output quality, this project focuses on the impact of image capturing on the output. As a result of this investigation, a …

An Investigation Into The Cost Justification Of Computer-To-Plate Systems, Jessica Murphey

Theses

In the history of technological development, it is usually the case that the technology is available before mankind understands the full potential of its use. Thus it should come as no surprise that CTP (Computer-to Plate) technology is currently waiting for its advantages to be exploited by the graphic arts' market. This was evidenced by the heavy saturation of platesetters presented at DRUPA 1995 (the largest printing trade show in the world), which demonstrated that CTP is no longer a research and development experiment but a marketplace reality and the topic of considerable discussion. Surprisingly, the response of the printing …

Balance In Memory, Junichiro Baba

Theses

None provided.

A Conservation Plan For The Juan Mendez Photographic Collection, Fernando Osorio

Theses

This thesis is put forth to document not only the outcome of two years worth of intensive investigation and preparation on the Juan Mendez Photographic Collection, but more importantly it offer viable conservation measures. The first two chapters describe the context of the life and work of Juan Mendez, a Mexican photographer who was active in the City of Puebla, Mexico during the years of 1926 to 1962. The third and fourth chapters are a report of the conservation survey that took place through various visits to the collection of his works during the course of one year. With the …

The Life Of Mariano Payeras: A Study In Church/State Relations, Douglas Anthony Cutter

Theses

To understand the role of Mariano Payeras as Father President of the California Franciscan Missions, it is necessary to place the historiography of the mission in its perspective. Literature abounds regarding California's Franciscan missionaries and their charges--the missions and Indian neophytes. Few historical arenas can claim such easily traceable roots as California and its mission period. In many ways the early Franciscans emerge as the creators of a new civilization, largely because the aborigines kept no written records and because centuries of cultural change, disease, persecution and censure have limited what anthropologists and historians can create of the native past.