Digital Commons Network^™

Water Treatment Plant Sludge As Sanitary Landfill Liner, Sinnadurai Sockanathan

Theses

This study was performed to explore the possibility of using the sludge waste from the water treatment plant at Boonton New Jersey as a containment material for the sanitary landfills or as a fill material. At present natural clay is being used as a containment liner for the landfills and by using this sludge, recycling of a waste product will be achieved in an economical manner.

As a first part of this studies, efforts were made to utilize the liquid sludge having a solid content of about 3%. Attempts to dewater the liquid sludge to a workable mix by adding …

Controlling Hazards Associated With Confined Spaces, Srinivas S. Varahabhotla

Theses

Work in Confined Spaces poses special health and safety problems. To avoid the serious consequences which may follow poorly planned or poorly supervised confined space work, a comprehensive program of recognition, evaluation and control of potential dangers must be developed.

The work force should be aware of the extreme dangers associated with confined space and of the procedures and equipment used to overcome these dangers effectively and safely.

The purpose of this thesis is to present the hazardous conditions in a confined space and different means of overcoming these dangers which are not readily apparent. It shows how confined spaces …

Automated Computer Drafting Of Precision Tooling For Drawing Operation, Basani Venkateswarlu

Theses

Based on customer requirements of components, design engineers create the necessary tooling using CAD to produce the exact part desired by the customer. A software package using CARL is developed to help the design engineer to create the drawings of Pinch off Punch and Pinch off for both rectangular/square and round punches. A variety of hole patterns for the punches are automatically created through the software, along with a possibility of selecting one of the standard patterns automatically for a drawing. The drawings are created such that the dimensions and the notes are automatically generated with the input of the …

Development Of Plasma Ion Nitriding Process Parameters To Increase Durability Of Machine Components, Wenge Yang

Theses

In this work glow discharge ion nitriding process was selected to increase durability of machine components. To achieve this goal, the process parameters were designed, established and optimized based on the desired surface properties. The orthogonal experiment method is used to optimize multifactors process parameters. Using the image analyzing approach the microstructure of differently treated materials were obtained and analyzed. Developed coating layers, including different nitrides such as Fe3N, Fe4N, and diffusion zone were controlled by the optimized process parameters. Analysis of the obtained microstructure and microhardness showed the improvement of surface mechanical properties. Performed wear testing experiments showed increased …

Determination Of Water-Cement Ratio In Cement Paste By Atomic Absorption Spectrometry, Jiong Zhao

Theses

As one of the important characteristics of concrete, water-cement ratio controls porosity and thus strength and corrosion resistance of hardened concrete.

This paper presents a laboratory observation for determination of water-cement ratio of fresh concrete for quality control and quality assurance. The atomic absorption spectrophotometer and the flouresence spectrophtometer were used to determine the calcium concentration in cement solution of various water-cement ratio. The level of water-cement ratio investigated ranged from 0.4 to 0.55 which covers the most range of water-cement ratios in present practice. The result of lab experiments shows an immediate relation between the water-cement ratio and the …

Primitive Dreams: In Search Of Judgment, Catherine Lasch Ramdin

Theses

None provided.

Homelink, Catherine K. Hu

Theses

None provided.

Way To The Absolute, Gonca Ilbeyi

Theses

Nowadays more and more people, especially who live in large cities, suffer from a terrible emptiness and boredom, as if they are waiting for something that never arrives. Within modern civilization, its people lose the meaning of their lives, values, and they find themselves in morally decayed. My main purpose, through the medium of art, is to express the complexities and paradoxes of human existence in modern industrial societies- not from a pessimistic, but a skeptical perspective. Alienation, depersonalization, loss of identity in this world by bureaucratic rules and regulations are central problems of all modern industrial societies. The rise …

Computer Graphics Archive: Prototype 1, Malinda D'Attilio

Theses

None provided.

Information Retrieval, Paul Bartow

Theses

My time spent here at RIT has taken me many places within the understanding of art. I can honestly say the time was well worth it. I can't help but realize that an education is a wonderful thing and that having to pay for it is excluding many who could use it. I had no expectations coming to graduate school, which might have been a good thing. My main concern was to prepare myself for a life without school, where I could guide myself on my own thoughts and feel secure doing so. The work I've done here has gone …

The Effects Of Blanket Tension And Squeeze Pressure On Slur And Doubling Using Conventional And Compressable Blankets In Sheetfed Offset Lithography, Alexander M. Voutsas

Theses

Dot gain is a printing characteristic which has an effect on printing quality, if it is not controlled. It refers to the physical increase in size for a printed dot during the transfer process between the film and the printed sheet. The purpose of this experiment was to determine whether varying squeeze pressure and blanket tension settings significantly affected directional dot gain (slur and doubling), therefore printing quality, using conventional and compressible types of offset lithographic blankets. The experiment was performed on the second unit of a two-color Heidelberg MOZP sheetfed offset lithographic press, bypassing the first unit. Directional dot …

A Study Of Mechanical Dot Gain For Different Dot Shapes Based On The Border Zone Thoery, Kuang-Hua Sun

Theses

Mathematical equations have been derived to calculate the relationship of the dot area and the radius or diameter of a halftone dot . Dot gain is directly associated with the perimeter and the shape of a halftone dot. It is important to study the relationship between dot gain and dot shape, and to understand how each affects the printing result . The border zone theory explains that when dot gain occurs, the width of the border zone around the dot is constant and is independent of the dot shape and dot area. Four halftone gray scales with different dot shapes …

Image Quality Metrics For Visual Optical Instruments, Hongping Zhang

Theses

The effect of coma and astigmatism on subjective quality of image of sinusoidal and square-bar targets is simulated by using digital processing system. A suprathreshold method is employed in psychophysical discrimination experiments. We determine the robustness of some image quality metrics that can be employed during automated production of visual instruments by examining the correlation between subjective results and objective measures. These include the variance of the wavefront aberration, the Strehl ratio, the radius of 84% encircled energy of the point spread function (R84), the modulation transfer function (MTF) and the integral of the MTF across the frequency range of …

Evaluation Of Lowtran And Modtran For Use Over High Zenith Angle/Long Path Length Viewing, Jonathan Wright

Theses

LOWTRAN and MODTRAN were evaluated in the 2.0-5.5 micron region against field collection data at high zenith angle/long path lengths to determine the degree of uncertainty associated with these models under these conditions. Matching data sets were developed using data from the Air Force Geophysics Laboratory Flying Infrared Signatures Technology Aircraft (FISTA) as the field reference. The Kolmogorov-Smirnov test was applied to determine the degree to which the outputs of LOWTRAN and MODTRAN follow the same distribution as the field data. The percent difference between the model and field data was also studied. Agreement between the model and field data …

Pixel Classification By Morphological Granulometric Features, John T. Newell

Theses

Pixel classification systems rely on a certain set of features that are sufficient to classify a given pixel into a class defined within a database. Unlike brightness and spectral signature features commonly used in remote sensing applications, texture-based features cannot be defined for a single pixel and must be derived from an area or window surrounding that pixel. In this research, all features are derived from binary morphological granulometries. Once generated, these features comprise a database which can be used to classify images. A Gaussian Maximum Likelihood Classifier is trained with this data base for subsequent classification of both dependent …

Interculturism, Shigeki Ito

Theses

None provided.

A Conceptual Look At Hodgkin's Disease, Todd K. Smith

Theses

None provided.

An Analytical Model For The Colorimetric Characterization Of Color Crts, Ricardo J. Motta

Theses

To be a viable instrument for color appearance research, the color Cathode Ray Tube has to be very well calibrated and characterized. The purpose of this research was to develop the techniques and methods used to carry out such characterization, and also to evaluate to what degree of precision and accuracy can such a characterization be performed. A new model for predicting the CRT behavior is presented along with the experimental results that validate it.

A Study Of How Coated Paper's Roughness, Gloss And Absorptivity Affect On Side And Print Gloss, Jimmy Jeng-Rung Ho

Theses

None provided.

Treatment, Ann Satterfield

Theses

None provided.

Threshold Modulation In 1-D Error Diffusion, Katrien Daels

Theses

Error diffusion (ED) is widely used in digital imaging as a binarization process which preserves fine detail and results in pleasant images. The process resembles the human visual system in that it exhibits an intrinsic edge enhancement An additional extrinsic edge enhancement can be controlled by varying the threshold. None of these characteristics has yet been fully explained due to the lack of a suitable mathematical model of the algorithm. The extrinsic sharpening introduced in 1-D error diffusion is the subject of this thesis. An available pulse density modulation(PDM) model generated from a frequency modulation is used to gain a …

Establishing A Bipolar Fabrication Service For Analog Circuit Realization At The Rochester Institute Of Technology, Andrew La Pietra

Theses

A bipolar fabrication service has been developed at the Rochester Institute of Technology to service students and faculty from the Microelectronic, Electrical and Computer Engineering departments wanting to realize designed integrated circuits. The fabrication technique combined Implanted N-Well and double diffusion processes. Phosphorous was implanted into a p-type substrate, oxidized for eight hours and diffused in nitrogen for another 40 hours to create isolated n-wells. Devices were then fabricated using a double diffusion process. The CAD tool used for the service is the Integrated Circuit Editor, ICE, which has campus wide accessibility through the RIT VAX system. Designed standard cells …

Analysis Of Random Halftone Dithering Using Second Order Statistics, Eran Steinberg

Theses

An analytical approach is proposed to explain the appearance of unwanted low frequency artifacts during the random dithering halftoning process. The solution uses a theorem which relates the correlation of the input gray level (continuous) signal to the correlation of the output (halftone) binary signal. The numerical solution of the above relationship suggests that: 1. Introduction of low frequency artifacts is inevitable. 2. The effect is enhanced for mean gray levels farther from mid-gray. 3. High frequency information in the input signal is attenuated more than low frequency information.

Simulation Of An Electrophotographic Halftone Reproduction, Alfonse Nazzaro

Theses

The robustness of three digital halftoning techniques are simulated for a hypothetical electrophotographic laser printer subjected to dynamic environmental conditions over a copy run of one thousand images. Mathematical electrophotographic models have primarily concentrated on solid area reproductions under time-invariant conditions. The models used in this study predict the behavior of complex image distributions at various stages in the electrophotographic process. The system model is divided into seven subsystems: Halftoning, Laser Exposure, Photoconductor Discharge, Toner Development, Transfer, Fusing, and Image Display. Spread functions associated with laser spot intensity, charge migration, and toner transfer and fusing are used to predict the …

A Study On Mentorship Within The Appraisal Profession, Kenneth M. Jenkins

Theses

The purpose of the study of mentorship within the appraisal profession is to determine the extent and perceived value of any existing mentorship within the profession in the Northern Virginia area. Employees indicate that of those persons having mentors, they advance professionally and monetarily more rapidly than those employees who don't have mentors. The employees who have no mentors indicate that the system is unfair, in that, the mentored employees are better "taken care of" when it comes to promotions, project selection, and training.

The literature bears out the employee comments . Many articles have been written extolling the virtues …

Negative Feedback Control Of The Visual System And Systematic Color Vision Model, Yan Liu

Theses

This thesis presents a physiological hypothesis of a systematic negative feedback control mechanism of the human visual system and a corresponding systematic color vision model. This model is based on the physiological hypothesis of systematic negative-feedback control of the visual system and both the stage color vision theory and Land's theory. According to this systematic color vision model, the color vision is processed as described by the stage theory, the negative feedback of the visual system adjusts the sensitivities of the cone photoreceptors and controls the visual system to adapt to the visual surroundings . The dynamic ranges of relative …

Multiple Expert System, Umesh Kumar Mittal

Theses

In many domains, for example medical diagnosis, there are several sources of knowledge, e.g., several domain experts. These domain experts may have disagreements over some issues in the domain. Research in the area of human decision making suggests that a human decision is not always made based on the advice of a single expert. Many current expert systems, however, expect consistency in their knowledge bases. An expert system does not deliberate by reasoning that "on one hand..." but "on the other hand..." The knowledge engineer, who is not necessarily an expert in the same domain, ensures consistency by eliminating all …

Multiresolution Techniques : Laplacian Pyramid Coding And Its Comparison With Subband Coding, Danmei Chang

Theses

The multiresolution pyramid and related structures have been developed as intermediate representations between the purely frequency domain and purely spatial domain. In this thesis. we discuss two important pyramid structures which are often used in multiresolution representation: Laplacian pyramid and subband coding.

Laplacian pyramid. a typical pyramid structure, is studied in detail. By means of software implementation. we obtain a comprehensive understanding of its features and applications in image representation and data compression. Several modifications of pyramid structure are used to compress the data dynamic range, reduce the computational complexity and improve performance. Performance of the conventional Laplacian pyramid and …

Comparative Study Of Prediction Gain Based On Neural Network Architecture, Prashant M. Shah

Theses

This thesis describes the Neural Network approach to design predictor using Delta and Generalized Delta Rule. The predictor is designed by supervised training based on the typical sequence of pixel values. Neural Network is used to find the coefficients of the predictor. Both 1-D and 2-D scheme of the pixels as well as linear and non-linear correlations are used to find the coefficients by training. Different combinations of pixels are used to find the "best" combination among the order of the predictor.

Integrated Digital Speech System With Pc, Zhen Zhu

Theses

A PC-based real-time digital speech processing system is designed. Speech synthesis, analysis, storage and retrieval are implemented in the system with intelligent telephone functions. Speech data are stored on floppy disk and easy to retrieve. Though floppy disk is slow in speed, real-time processing is achieved with low bit rate coding. The computer gets speech data from a digital speech processing unit or send data to it through a synchronous seiial communication port. The analog input of digital speech processing unit can be selected from the telephone line or the microphone, and output of the digital speech processing unit can …