Digital Commons Network^™

Weighted Least Square State Estimation In Power System, Jinn-I. Wu

Theses

In this thesis two methods for power system real-time monitoring are presented, programed and tested. Method 1 is not new and method 2 is a modification of method 1. The two methods are comparable in performance and they solve the problem satisfactorily.

These methods are iterative and the problem of choosing a convergence criterion is unexplored yet. This problem has been discussed, guidelines are presented to select an optimal convergence criterion.

The concept of confidence level and techniques for error detection are investigated. programs to detect bad data and to establish a confidence level have been written and some tests …

The Sunlight Effect On Trace Pollutants In Wastewater, Alan R. Sheu

Theses

In order to study the sunlight effect on the degradation rate of trace pollutants, ortho-cresol was selected to serve as a model compound in our studies. Solution of ortho-cresol alone, methylene blue alone, and the mixture of ortho-cresol and methylene blue were exposed to sunlight for more than four hours and aliquots analyzed with a spectrophotometer in order to follow the changes in absorption. Rate data were obtained for these three cases as a function of pH.

The results indicate that methylene blue does catalyze the degradation of ortho-cresol in the presence of sunlight with lower pH's affording higher reaction …

An Investigation Of Quantification Of Image Quality With Respect To Screen Ruling On The Appearance Of Multicolor Print, Yi-Sheng Lu

Theses

Using a finer screen ruling will result in an improved final image quality in the color printing process. Studies have shown that beyond certain screen frequencies any further increase in the number of lines per inch has negligible benefit on multicolor process printing when using the half-tone printing precess. The objective of this research is to quantify the image quality of multicolor process printing by comparing the results of using several different screen rulings. The final image quality was subjectively evaluated based on the appearance of otherwise identical reproductions with the only difference being the screen ruling. The results of …

A Study Of The Discernibility Of Electrophotostatic Copied Typestyles As Compared With Non-Electrophotostatic Copied Typefaces, Laura A. Melchionne

Theses

This paper reports the results of an investigation into the discernibility of seven typefaces when overlayed by 15 different gauges brought into contact with each type face. Discernibility was tested under two conditions; standard (original typeset words) and electrophotostatically copied (second generation copies of the original typeset words) . The question that this investigation was attempting to answer was whether or not certain typefaces are more discernible after electrophotostatic copying than other typefaces. The seven typefaces were chosen because they have a known aesthetic preference that can be catergorized in three groups; most preferred, inbetween and least pre ferred. Preference …

Characterization Of Ion Implanted Antimony, Michael J. Cumbo

Theses

Ion implanted antimony (121Sb) is characterized as an n-type dopant in single crystal (100) oriented silicon. The required implantation equipment and critical parameters are discussed. The experimental procedures used in this study are presented along with the resulting data on dopant distribution and crystal damage annealing. The tradeoffs between antimony and arsenic, the more commonly used heavy n-type dopant, are examined from both a process end a device perspective. The context of this comparison is in applications that require a heavily doped layer beneath a thin deposit of epitaxial silicon. Results of a specific buried layer process characterization are included.

A Performance Comparison Between A Wide-Hinged Endpaper Construction And The Library Binding Institute Standard Endpaper Construction, Claudia Chaback

Theses

For the last fifty years , library binders have employed a standard endpaper construction for all of its bindings. Now, because of new binding techniques and the deterioration of paper some preservationists have placed a demand on library binders to develop an alternate endpaper construction. The purpose of this study was to determine the hinge strength and openability performance of the two most conmon library binding techniques, oversewing and Singer side sewing, which were flat backed and rounded/backed in relation to the currently used the LBI Standard endpaper as compared to the wide-hinged endpaper construction. It was questioned if there …

Thermal Degradation Of Polymer Blends Containing The Poly(Hydryoxy Ether Of Bisphenol-A), Joseph S. Formosa

Theses

The thermal degradation of blends of phenoxy with polycaprolactone , poly ( 1 , 4-butylene adipate), poly(l,4-cyclohexane-dimethylene succinate), poly( 2 , 2-dimethyl-l , 3-propylene succinate), and poly( hexamethylene sebacate) has been studied using thermogravimetric analysis, direct-pyrolysis mass spectrometry, and infrared spectroscopy. For each blend, the polyester componenent was less thermally stable in the blend compared to the pure state. The thermal stability of the phenoxy was not affected by the presence of the polyesters in the blends. Blends of phenoxy with polycaprolactone and with poly ( 1 , 4-butylene adipate) degrade in two-step mechanisms where the amount of weight loss …

A Digital Indicator Diagram Generation System For The Ricardo E6 Engine, Peggy A. Faber

Theses

This paper explains and evaluates an indicator diagram generation system for a single cylinder, internal combustion, research engine. The apparatus is digital and consists of a piezo-electric pressure transducer with charge amplifier, a shaft encoder, a digital oscilloscope, and a computer with printer. Motoring data provides valuable information on the performance of the system which is used in the computer software to produce results accurate to 5.4 percent. Results include the indicator diagram itself, the work produced, the horsepower, and the indicated mean effective pressure. Included are an overview of indicator diagram theory, discussion of the apparatus, evaluation of the …

Four Input Nor Gate Array For Emcr210, Theodore Lemmond

Theses

At the Rochester Institute of Technology, a freshmen laboratory project, utilizing a NOR logic array and the existing PMOS process, has been successfully incorporated into the microelectronic engineering curriculum. This paper outlines the structure of this new course. Students are introduced to digital logic and I.C. fabrication by designing a simple digital circuit and realizing it in the gate array. Completion of the circuit is accomplished by making a mask and photolithographically defining the metal layer. The circuits are then tested for functionality.

Biotechnology & Plant Agriculture: "Steps In Developing A New Product", Kevin G. Mallon

Theses

Unavailable.

A Study Of Toray's Negative Working Driographic Printing Plate And The Effect Ink Tack Has On Toning In The Non-Image Area, Larry M. Capitano

Theses

Driography is a planographic printing process. A driographic printing plate differs from a conventional offset lithographic plate in that water is not required to keep the non-image area clean of ink during printing. Water, or fountain solution, is not required during printing because a silicone rubber coating which repels ink is used for the non-image area of a driographic plate. The first driographic plate was introduced in the early 1970's by the 3M Company. The plate was a positive working printing plate and has since been discontinued. Driography has since been researched by a number of companies but only one …

Psyxpert: An Expert System For Aiding Psychiatrists In The Diagnosis Of Psychotic Disorders, Mary A. Overby

Theses

Psyxpert is an expert computer system designed to aid psychiatrists in the diagnosis of mental disorders when psychotic features are the prominent part of the presenting clinical picture. The knowledge base contains psychiatric knowledge in the form of production rules. The system uses a backward-chaining control strategy to guide the consultation. Psyxpert provides a menu-driven user interface and an explanation subsystem. The system uses certainty and importance measures to produce a diagnosis with an attached certainty factor and recommendations for further evaluation or therapy. Psyxpert is written in Virginia Tech HC Prolog and runs on Digital Equipment Corporation's VAX 11/780 …

A Finite Element Solution Of Thermal Wave Propagation In Elastic Media, Dominic N. Dalo

Theses

The rational theory of thermodynamics is used to develop equations governing the propagation of thermal waves. A new vector quantity is introduced to account for the thermal waves. The phenomenon of thermal wave propagation is illustrated by considering the problem of one-dimensional heat conduction in a finite slab subjected to a heat flux pulse. The solution is obtained via the finite element method. A discussion of the results and their significance is also presented.

Man And Nature - Enlightenment Of Zen, Tsai-Jung Chiang

Theses

Not Included

An Expert System To Optimize Combinational Logic, Gu-Ching Lin

Theses

Twenty to fifty percent of the active area of most semicustom integrated circuits is devoted to combinational logic. Automating the synthesis and optimization of combinational circuitry can result in significant improvements in both the design cycle time and the overall area of the implementation. This thesis presents a rule-based system that optimizes combinational logic for a given technology. By performing Boolean function minimization, decomposition, logic synthesis and a series of local transformations4, the system achieves area reductions and saves valuable design time.

The Effect Of S-Donor Ligands On The Sensation Of Silver Bromide Crystals With Iridium (Iii), Juan A. Zuleta

Theses

Different concentrations of potassium thiocyanate (SCN) were used in combination with Iridium (III) hexachloride (Ir) to surface sensitize an octahedral silver bromide emulsion. Surface sensitivity increased by 0.90 log H over the unsensitized emulsion when Ir and SCN were added during sensitization compared to 0.45 log H when the iridium salt was used alone. A decrease of 2.40 log H was observed when an Ir-SCN complex was formed and then added to the emulsion. An increase of 1.05 log H was obtained if gold, thiocyanate and iridium were used. Similar results were obtained using tetramethylthiourea (TMT) or thiodiglycol (TG) instead …

Research And Development Of A Computer Program For Calculating Rotor System Dynamic Response Including Foundation And Pedestal Flexibility Effects, Shixiang Zhou

Theses

Details are presented of the research and development of a computer program for the calculation of Rotor System Dynamic Response including foundation and pedestal flexibility effects. Eight-coefficient bearings are used to permit elliptical orbit rotor motions. The bearings are mounted in massive, damped flexible pedestals, which are themselves mounted upon a foundation structure with distributed mass and stiffness properties. The foundation is in turn, supported on a number of flexible-damped supports. Different foundation properties in the horizontal and vertical directions are included. The results obtained are compared with data by other investigations. Applications of the code are described which validate …

The Design And Fabrication Of Dielectric Waveguides For Use With High Power Carbon Dioxide Lasers At 10.6 Microns, Jong Min Kim

Theses

The feasibility of constructing a feasible transission system to propagate 10.6 microns energy from a CO₂ laser is explored. The system is to be used in a clinical surgical setting to deliver as much as 100 watts of CW power from a surgical CO₂. laser to a surgical target.

The optimal transmission system is a slender flexible cylindrical structure, 1 mm in diameter and 1.5 m long. The structure should be sufficiently flexible to be bent into a 5 to 10 cm radius without a significant increase in the attenuation constant. For clinical applications the system must …

Evaluation Of Numerical Inversion Of Laplace Transformed Solutions, Yu-Chwin Lin

Theses

Here, some linear physical systems are analyzed by using the standard Numerical Laplace Transformation and Inversion method, including undamped and damped systems:

1. Undamped system: A bar clamped at one end and at one end free.

2. Damped system: Viscously damped linear discrete system.

The advantage of the Numerical Laplace Transformation method is that it reduces the inversion of the Laplace transformed solution to numerical integration; it makes the problem much easier to solve. In the present work, we also studied a new Numerical Laplace Transformation Inversion method by Wilcox (App.0 and Ref.l). The merit of this new method is …

Digital Signal Processing Implementing The C Language With Graphics Spectrum Analysis Display, Anuraksa Mahanirananda

Theses

Digital Signal Processing discussed in this thesis is concerned with the transformation of signals or complex wave forms From time domain to frequency domain and vise-versa, implemented on microcomputer systems. The primary principles are: speed of transformation, ease of usage as an application program, capabilities of graphics displaying transformed data (such as power spectrum analysis), storing these data onto record files, and capability of using these data Files and programs with other application programs.

We begin by discussing briefly, the concepts of Fourier theory, Discrete and Fast Fourier Transform, algorithms of Fast Fourier Transform and bit-reversal. Then we implement these …

Automated Manufacturing Technology As A Factor In Production Planning And Control, Henry Steven Nicholas

Theses

The field of automated manufacturing technology is examined. The physical hardware is described, including transfer systems, feeder systems, placing devices, automated work stations, sensors, and actuators. The interrelation of the hardware elements is described and various applications are identified. The role of the control system and its interaction with the hardware is examined. The data communications network required for the control system is considered. Various types of computers, computer network structures, and process control strategies are examined.

The use of automated manufacturing technology requires a new approach to production planning and control. The traditional approach is described and several problem …

Alternatives To Lay Off, Davidson Nwaneri Okere

Theses

In the recent years, there have been some changes in the American corporate life. These changes have been occasioned by some external factors which adversely affect the profitability of the companies. In order to address this problem, many corporations have resorted to cutbacks which more often than not, affect a great bulk of the human resources.

The purpose of this study therefore, is to explore the strategies which companies could use, rather than lay off, during business downturns; and still remain competitive and profitable.

Chapter one of this study focuses on what companies should do to help the affected workers …

The Feasibility And Economics Of Resource Recovery Using Municipal Solid Waste, Joachim Aloysius Pinto

Theses

This thesis gives an overview of the feasibility and economics of a resource recovery project. The feasibility study of a resource recovery project is done by analyzing its markets, economics, and environmental aspects. The use of market development, accurate capital and operating cost estimation procedures and environmental impact analysis help in predicting fairly accurately the feasibility of a resource recovery facility and also gives a good estimate of the economics of the project.

The thesis also discusses the different system design that are or were used in waste-to-energy conservation. It is quite evident from the discussion that the only two …

Microcomputer-Based Automated Feeding And Monitoring System For Eating Behavior Studies On Rats, Tseng-Huang Shih

Theses

An instrumentation system has been designed to monitor feeding behavioral experiments on rats. This instrumentation system is capable of performing these experiments in an automated manner without any human intervention. It is capable of monitoring these experiments concurrently in six cages. It exhibits several features that make it more versatile than previous feeding & monitoring systems. It is also capable of storing the data generated on to a floppy disk and later printing out the data for analysis.

Another feature that makes it more versatile is the flexibility of the system. Construction of a parameter file before doing the experiment …

Analysis And Evaluation Of The "Pay For Savings" Concept : The Residential Energy Conservation Action Program (Recap), Glenn Owen Steiger

Theses

Recently, electric utilities have developed and implemented many methods to induce their customers to reduce consumption of electricity. One of the most unique concepts was developed by the General Public Utilities Corporation. Simply, it is the "Pay for Savings" concept which pays energy conservation contractors for actual (measured) energy saved, and not for the retrofit measures used to accomplish the savings. GPU has developed a program, Residential Energy Conservation Action Program, as a vehicle for this concept.

This thesis has attempted to describe the methodology used in implementing RECAP. More importantly, it has analyzed actual results of the program and …

Performance Of Second Order Delta Modulation System, Reza Aghazadeh Alavi

Theses

The performance of an ordinary delta modulation (DM) system under three types of input signals was investigated. These signals were band limited Gaussian noise, 800 Hz sine wave, and speech signal. The affects of 2nd DM added to the ordinary DM in improving the performance of the system were researched. This is called a Second Order Delta Modulation System. The obtained data showed an increase of about 3dB in the overall Signal to Noise Ratio (SNR) of the system, in the worse case.

Input to the 2nd DM is the band limited error of the first DM. A linear phase …

Stress And Today's Working Woman, Tommie Mae Byers

Theses

The eighth wonder of the world is fast becoming the great American job machine The employment rate has declined in most industrial nations while 20 million jobs have been created in the U. S. during the past 10 years. The principal reason for this rise in job placements is the large influx of women into the labor force.

Two-thirds of the jobs created over the past decade have been seized by women. The post-industrial environment which has produced an extensive number of service-type businesses has substantially opened the job market for women. Financial experts will contend that an expanding labor …

Mrp Ii As A Tool For Inventory Management : Application, Implementation, And Its Alternatives, Yi-Hsin Chiu

Theses

MRP II has been used universally as a tool for production planning in various manufacturing systems. Its foundation of success is based on an accurate inventory management. Due to the rational pricing of computer hardware and software, the selection of an appropriate off-the-shelf MRP II package has become an important topic. Moreover, implementation of a commercial MRP II package significantly affects its capability of handling an assigned task. The scope of this thesis is to discuss how to successfully implement MRP II through a design and development of a proper inventory data base in order to expand its application. The …

Reflections On Solid Modeling In Cad/Cam System, Yuh-Hwa Chyr

Theses

In this thesis, we will first study the mathematical fundamental for geometric modeling. It includes modeling space, representation scheme, and various characteristics for solid modeling. Then we discuss how a solid modeling system is integrated into an overall CAD/CAm system. What functions it performs, and what fuctions must be performed with other parts of the CAD/CAM systems. And how data can be transfered between solid modeling system and other CAD/CAM system.

Solid modeling has created a new era in CAD/CAM. A solid model is an unambiguous, three-dimensional, geometric representation of a design. The more design information a model can represent, …

Mathematical Modelling Of The Simultaneous Diffusion Of Egta And Caegta And Ca2+ In A Two-Compartment System Representing Skinned Smooth Muscle, Roderick Jon Hausser

Theses

Smooth muscle strips "chemically skinned" with Triton X-100 represent a two-compartment system consisting of the extracellular space (ECS) and the cytosolic space (CS) bounded by the permeabilized plasma membrane. Free [Ca²⁺] in such systems must be controlled with sufficiently high concentrations of Ca-buffers (EGTA). The presence of Ca-buffers, however, will oppose and delay any changes in [Ca²⁺] in both compartments. We have developed a model describing the simultaneous diffusion of Ca 2+ , EGTA and CaEGTA between bath and ECS, and ECS and CS and the chemical reaction between ligand and metal species in each compartment. …