Digital Commons Network^™

Computerized Instrumentation System For Indirect Measurement Of Metabolic Changes In Rats, Holger Tebbje

Theses

This work describes the further development of a system for the measurement of the energy expenditure of rats. Based on the concept of indirect calorimetry the respiratory exchange is monitored in a controlled experiment. Rats are held in cages through which air is drawn and analyzed. Transducers and sensors, interfaced to the computer, are measuring the composition and the physical parameters of the gas entering and leaving the chambers. The data recieved is processed, displayed on a screen, printed and stored for later analysis.

The accuracy and repeatability of the system improved by measuring additional parameters like barometric pressure and …

The Quantitative Analysis Of Airborne Particulates By X-Ray Flourescence, George C. Asteriou

Theses

Airborne particulate matter from the New Jersey State area collected on Quartz Microfiber filters was analyzed by X-Ray Fluorescence spectroscopy. The quantitative analysis of the samples against N. B. S. standards produced results which were compared with Atomic Absorption analysis

The results from the two methods were correlated by the introduction of empirical factors for each element.

However, a larger number of analyzed standards of varied composition, along with the creation of a spectral library, can minimize the need for empirical factors and yield accu¬rate results.

Digital Fm-Demodulation Using Digital Signal Processing Techniques, Peter Wagner

Theses

This thesis presents the results of research in the area of digital demodulation of FM signals. The first part of the thesis describes the performance of digital Hilbert-transformers and Differentiators that are optimized in a determined bandwidth. These digital filters are used to build a digital Klapper-Kratt detector. According to this procedure, the coefficients of the digital Klapper-Kratt detectors up to the filter length N=25 are calculated and the resulting discriminator ripple computed and evaluated. One suggested algorithm gives the opportunity to balance the detector at a certain center-frequency. The major part of this thesis describes a new approach towards …

Cross-Cultural Study Of Maslow's Need Theory Of Motivation, Jitendra N. Mishra

Theses

Abraham H. Maslow's Need Theory of Motivation was subjected to a cross-cultural scrutiny to see if his theory has universal application. It was thus also intended, to make a contribution to his theory since today, global interdependence is no longer a matter of belief, preference or choice. Rather, it is an inescapable reality.

To achieve this goal, an extensive Literature Survey was undertaken. It was found that his theory is more consistent with American value system. Nevertheless, if care is exercised, his theory can be useful in International context too, with some necessary modifications.

This paper is directed to save …

Reaction Of Atomic Hydrogen With Chloroform In A Discharge Flow Reactor, Wan-Kuen Jo

Theses

The reactions of atomic hydrogen with chloroform were studied in a tubular flow reactor both in a 4 cm i.d. and 2.6 i.d. discharge flow reactor at pressure of 2.22 to 2.82 mmHg and room temperature using GC and GC/MS for analysis of the reaction. The hydrogen atom concentration at the reaction flame was measured by Chemiluminescence titration with nitrogen dioxide. The hydrogen concentrations are in the 2.48 x 10⁺¹⁴ to 4.83 x 10⁺¹⁴ atoms/cc range at six different hydrogen flow rates. Evidence was found for the formation of atomic carbon intermediate in the reaction, but methane was …

Preparation And Testing Of Blocked Isocyanate Dental Adhesives, George W. Sweitzer

Theses

Three monomers were used in this study. Two were prepared from 2,4-toluene diisocyanate (TDI),2 hydroxyethyl methacrylate (HEMA), and either o-methoxyphenol, or o-chlorophenol. The third monomer was prepared from pentaerythritol, TDI, HEMA, and p-cresol.

These monomers were bonded to dentin slices, and then combined with an adhesive copolymer consisting of methyl methacrylate and poly(methyl methacrylate). This mixture was polymerized at room temperature by addition of N,N-dimethyl-p-toluidine, and benzoyl peroxide. This adhesive copolymer was applied to monomer coated slices of dentin, and to aluminum coupons already fixed in a jig. The monomer-coated dentin slices (treated with the adhesive copolymer) were then placed …

Human Factors In The Design Of Computer Graphics Input/Output Interfaces, Michael Uche Amadi

Theses

Computers are used for solving problems of various kinds and therefore, if the users are to fully benefit from the systems, they must be considered during the earliest stages of the system development. There are three major classes of computer users namely: naive, managerial, and scientific-technical. These users have different characteristics that the designer must consider within his/her system. Only by including such distinctions will these user groups each be able to perform at their respective optimum levels. Just as there are different users, there are also numerous applications to which computers can be applied. This thesis will be restricted …

Standardization, Certification Its Impact On Electronic Systems Manufacturing, Lawrence M. Johmann

Theses

This thesis is a result of an in-depth study of the standardization and certification process in various countries throughout the world. The study was undertaken due to the general lack of readily available information on the subject and problems the author encountered while involved in standardization and certification activities at his previous place of employment.

The thesis discusses product and process standardization and certification and its impact on electronic systems manufacturers. First, the need for standardization and certification is established and its history is reviewed, then the various types and classifications are addressed. Subsequently, standardization in the United States, in …

Dot Structure Analysis Of Film And Developer Combinations To Optimize Lof For The Dc-300b/L Scanner, Randy Demuth

Theses

The purpose of this research was to evaluate the two current systems which are presently industry standards for judging test exposures which are used to determine an optimum exposure value for the Hell DC 300B/L electronic dot generating scanner: 1. The Hell System 2. The Kodak System The Hell System uses aim density measurements of specific percent dot area's or integral dot densities to obtain an optimum exposure value. The Kodak System compares the dot shape and size of complementary 95 percent and 5 percent dots to obtain an optimum exposure value. The Hell computer program test tape number 149 …

Two Dimensional Diffusional Model For Leakage Of Macromolecules In The Interstitial Space, Suthiluk Dumrongsiri

Theses

Two dimensional diffusion of macromolecules through the interstitial in the hamster cheek pouch was studied with intravital fluorescence microscopy. After topical application of Bradykinin, the movement of Fluorescein isothiocyanate (FITC)-labeled dextrans of average molecular weight 150,000 daltons (Dextran 150) was recorded on videotape which latter was played back frame-by-frame for analysis by digital image processing. Leakage of macromolecules in response to topical application of Bradykinin occurs at discrete leakage site in post caplillary venules of 15-25 um diameter, rather than in the capillary themselves. A mathematical model of two dimensional convection plus diffusion was used to simulate the macromolecule transport. …

Automated Arrhythmia Detection In The Exercise Electrocardiogram, Gregory Ciurpita

Theses

A self-adapting, non-real time method for detecting arrhythmias in single channel Exercise ECG is described. Linear and non-linear digital filtering techniques are used to remove additive noise. A time-varying threshold technique is used to detect R-waves based on amplitude. Feature extraction and matched filter methods are used to classify QRS-waves into existing types, or to create new types. The program works on digitized data from floppy disk and plots all data along with classification results on ReGis graphics terminal or printer. This work will continue so that the system will be capable of processing three-channel ECG in real-time.

Automated Eeg Spectrum Analysis System, Marinela C. Laguna

Theses

A computer system has been designed to acquire EEG data from monkeys and to perform the spectral and statistical analysis. The system is capable of processing two channels simultaneously, acquire 64 Kbytes of EEG data for each channel on floppy disk, do the spectrums and averages of the spectrums, and calculate the histogram amplitudes of 13 frequency bands in a range of 0-71.1 Hz.

The software gives the user a lot of choices with respect to data acquisition and processing. The relative spectral power differences between "no-drug" and "drug" experiments give information about the drug effects on the central nervous …

Computer Simulation Of A Batch Distillation Column With A Reflux Divider, Michael Gerard Clarke

Theses

The operation of a batch distillation column with a reflux divider has been mathematically simulated to reproduce operational equipment.

The operation of the column consists of one or more product recoveries. During each product recovery period the column alternates between total reflux and total product withdrawal, with the product withdrawal period being 2 — 5 seconds. Between product recoveries the column operating conditions can be reset.

The basic assumption of this batch distillation simulation is that the column completely equilibrates during the period of total reflux. The determination of the total reflux condition is obtained computationally using the iterative Newton—Raphson …

Vapor Pressures Of Some Coal Oil Fractions, David G. Gaydos

Theses

New data on coal tar oils and data from the literature on pure compounds and oils derived from coal were used for testing the predictions by the correlation of Maxwell—Bonnell. Based on the observation that the discrepancies between the predicted values and the data are systematic, recommendations were deduced on needed modifications to the correlation. A proposal for modification to the Maxwell and Bonnell correlation to improve prediction of vapor pressures of highly aromatic fuel fractions with characterization factors of8 UOPK 10.5 was made.

Experimental data were taken on vapor pressures of fractions of coke oven coal tar oils and …

An Integrated, Interactive Analysis And Design Of High-Rise Buildings On Micro-Computers, Vijayakumar Balusu

Theses

The implementation of Computer-Aided-Software, coupled with matrix and finite element techniques permitted the analysis and design of structures to the desired degree of accuracy and modelling. The successfulness of micro-computers in a vastly business oriented market has prompted the structural engineer to take advantage of cheaper and efficient micro-computers in the analysis and design of structures particularly the high-rise buildings. The availability of a comprehensive, integrated software for the analysis and design of high-rise building frames that can be operated on a micro-computer is either not currently available in the market or the available software programs do not fulfill the …

A Parameter Identification System For The Human Electroretinogram, Yu-Huai Hsiao

Theses

The human Electroretinogram (ERG) is obtained in a clinical test to detect physiological abnormalities in the eye. A mathematical model of the ERG has been developed, as well as a system to identify its parameters. The system utilizes several computers. The data acquisition and initial processing is done on a previously developed system at the Eye Institute of New Jersey and the University of Medicine and Dentistry of New Jersey, which has been modified to provide the facility for further processing. Software was developed to use a MINC-11/23 computer at New Jersey Institute of Technology to transfer data between the …

Experimental Investigation Of Heat Transfer From An Array Of Air Jets Impinging Normally On A Flat Plate, Deniz Metin Kaya

Theses

Heat transfer from submerged, turbulent, circular and axisymmetric array of air jets impinging normally on a hot flat plate has been studied experimentally. Jets issued from an array of five nozzles 6.35 mm (0.25 in.) in diameter. The ratio of nozzle center-to-center distance to the nozzle diameter, given by C_n/D, of 2, 3 and 4 were considered. Nozzle exit Reynolds Numbers 14000, 26000 and 54000 were employed. The ratio of distance between the test plate and nozzle diameter (Z_n/D) varied from 5 to 15.

Two experimental arrangements, one with a segmented brass plate heated by a …

Managing The Transition Of An Army Program From Engineering Development Into Production, Thomas Joseph Thomas

Theses

An overview of the entire Army Research, Development, and Acquisition process is presented. The research, development, test and evaluation phases are detailed. Special emphasis is placed on the Army Producibility Engineering and Planning Program. Examples of the different elements of our Army Production program are described. Finally, the focal point during the transition, the Milestone III and the events surrounding it, are discussed.

Free Convection Boundary Layer Heat Transfer Analysis Of Isothermal Horizontal Square Plates, Konstantinos E. Tsouras

Theses

The theoretical study presented here examines free convective boundary layer flow and heat transfer over isothermal horizontal square plates.

The boundary layer equations subjected to the appropriate boundary conditions were solved by using Von Karman's approximate integral technique. The analysis was performed by considering an axisymmetric boundary layer because the analyzed phenomenon is three-dimensional in nature. Three-dimensional boundary layer analysis, however, is complicated and the work involved is rather tedious. Consequently, the axisymmetric boundary layer offers a useful alternative. Unfortunately, it was found that this type of analysis is applicable to the case of an upward-facing heated plate only; for …

Preparation And Properties Of Novel Dental Adhesives Based Upon Pentaerythritol, Yuan-Yuan Su

Theses

Urethane methacrylates were synthesized from Pentaerythritol, TDI, HEMA and four phenolic blocking agents or from hydroxypropyl methacrylatel TDI and two phenolic blocking agents. All the products were characterized by melting pointy infrared spectroscopy, NMR spectra, and elemental analysis. The bonding of these materials to dentin slices was also investigated. Such materials are supposed to not only react with the organic constituent of dentin but also polymerized with restorative resin. It was found that bond strength was enhanced by the use of the urethane methacrylates, resulting in best mean bonding strengths of 2400 psi.

The Effects On Hue Resulting From Black Overprinting In Halftone Reproductions, Brian Philippsen

Theses

A type of black printer that only existed in theory is now being applied in the printing industry. The process which makes use of this black printer is known as gray-component replacement. Developed from the extension of the undercolor removal process, the use of gray-component replacement in printing halftone reproductions is said to result in numerous technical and cost benefits. When used to the maximum, the process eliminates one of the three process color inks in a given unit area and prints black ink from highlight to shadow. A problem can result from the use of this process as it …

An Examination Of Modulation In Shipley S1400 Positive Photoresist As Resist Thickness Varies, Mary Kay Swan

Theses

A method of determining photoresist image modulation was investigated and utilized, in determining the effect of varied resist thicknesses on modulation for both a high and low contrast system. Modulation is defined in terms of maximum and minimum energy required to clear a line/space pattern in the resist image. In This study, useing the resist as the threshold detector, chemical contrast is compared to physical contrast in terms of modulation. Shipley's MF314 and MF312 are the two different contrast development systems used. This study has shown that beyond 11700 Å of resist thickness, physical modulation is reduced to a measure …

Psychic Expression Through Image-Making, Donna De Palma

Theses

None provided.

Terrestrial Invertebrates Of The Virgin Islands, Wendy Jackelow

Theses

None provided.

The Pathological Indications Of Diabetes Mellitus, Patricia Gast

Theses

None provided.

Color: A Semiotic Approach (A Video Tape Presentation), Michele Italiano

Theses

None provided.

An Automated Tungsten Source Sensitometer, Michael L. Rudolph

Theses

The design and evaluation of an automated tungsten source sensitometer are described. Design considerations are outlined. Equipment performance is evaluated and found to exceed the specifications developed. The unit is currently being used to support production testing.

Fuzzy Data And Logical Data Base Design, Karen Steelman

Theses

None provided.

Ceremonial Vessels, Paul Sherman

Theses

Not Included

Identity Mark Evaluation And Organization Project, Brian Bennett

Theses

None provided.