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Articles 5401 - 5430 of 5975
Full-Text Articles in Entire DC Network
Three Installations: A Thesis Chronicle, Jonathan F. Kline
Photographs 1982-1983, Barbara Bosworth
Taking My Father's Pictures, Carl Raphael Yusavitz
Comparison Of Methods Of Mtf/Otf Analysis For Optical Systems, Jean Croteau
Comparison Of Methods Of Mtf/Otf Analysis For Optical Systems, Jean Croteau
Theses
A comparison study for the methods of obtaining the MTF of optical systems was performed. It is demonstrated that non-Fourier methods are as good predictors of the MTF as are the Fourier methods. A new technique based on the moment theorem is introduced and is found to be a good predictor. A computer algorithm has been written to perform all the necessary operations.
Behavior Of Joints Using Reinforced Polymer Concrete Under Seismic Loading, Ishac H. Kafrouni
Behavior Of Joints Using Reinforced Polymer Concrete Under Seismic Loading, Ishac H. Kafrouni
Theses
This report describes the analysis and testing of two types of exterior beam-column joints conducted at New Jersey Institute of Technology. The testing program consisted of six beam column joints with varying strength cementing agents in the joint region: normal, high strength and polymer concrete. Half of the specimens contained 1.5 percent by volume of hooked end fibers. The study of the behavior of these beam column joints has indicated 2 cases of failures: a critical region in which the inelastic behavior was controlled by bending and, a critical region in which the inelastic behavior was controlled by high shear. …
Design Of A Photoreactor For The Oxidation Of Toxic Pollutants In Water By Ozone And Ultraviolet Radiation, Shahab Rashid Khan
Design Of A Photoreactor For The Oxidation Of Toxic Pollutants In Water By Ozone And Ultraviolet Radiation, Shahab Rashid Khan
Theses
A photoreactor has been designed to oxidize refractory chemicals found in water using ozone and ultraviolet radiation. The feasibility of the ozone/UV process has been examined by conducting experiments with three model compounds, namely, (1) o-chlorophenol (2) m-chlorophenol and (3) p-chloro phenol. For o-chlorophenol and p-chloro-phenol, reactions were very fast with ozone/UV oxidation and somewhat slower with m-chlorophenol. It is concluded that UV irradiation increases the decomposition of ozone and the resulting unstable intermediates are much more reactive than ozone. Ultraviolet light also helps in decomposing the substrate molecules. The effect of UV upon decomposition of ozone is more pronounced …
High Speed Puncture Impact Studies Of Structural Foam Plaques, Shashi B. Kumar
High Speed Puncture Impact Studies Of Structural Foam Plaques, Shashi B. Kumar
Theses
The constant velocity high speed impact study was conducted on different thermoplastic and thermoset structural foam plaques to study their impact behavior. Plaques of Noryl, Polycarbonate, Polystyrene and Polyurethane were carefully chosen to represent a true sample of the manufactured product. Test plaques were marked such that specimens could be tested for variation in location, thickness of the plaque and variation between plaques. High speed puncture impact experiment was conducted on each specimen and the results were analysed.
The test results showed that the impact performance varied significantly over the plaque. Noryl and Polycarbonate did not exhibit any correlation for …
Measurement Of Thermal Conductivity Of Polymers Using Line Source Method, Manojkumar C. Patel
Measurement Of Thermal Conductivity Of Polymers Using Line Source Method, Manojkumar C. Patel
Theses
The purpose of this investigation was to evaluate the Line Source technique to measure the thermal conductivity of different molten polymers. Although the results obtained using this method are within acceptable experimental error limits, due to tec reasons explained, the results are not as accurate as claimed in the literature which describe this technique.
Radiation Heat Transfer Analysis Of A Czochralski Furnace With A Radiation Shield, Frederick A. Merz
Radiation Heat Transfer Analysis Of A Czochralski Furnace With A Radiation Shield, Frederick A. Merz
Theses
This paper reports on the radiation heat transfer from the melt in a Czochralski crystal growing furnace in the presence of a radiation shield The change of radiation heat transfer effects three basic areas, the cooling rate of the crystal, the bulk flow and the bulk temperature of the melt. The shield is installed above the melt to inhibit the heat transfer from the melt to the cooling crystal, allowing the crystal to grow 40% faster. Radiation is the primary mode of heat transfer in the furnace where the temperature to grow silicon crystals is around 1773K. The governing equations …
A Literature Review On Radioactive Interactions With Real Molecular Gases In Laminar And Turbulent Flow In Circular Pipes, Robert P. Quinn
A Literature Review On Radioactive Interactions With Real Molecular Gases In Laminar And Turbulent Flow In Circular Pipes, Robert P. Quinn
Theses
A literature review is provided concerning the subject of radiative heat transfer interactions of real molecular gases with the additional modes of heat transfer, conduction and convection, in laminar and turbulent flow in circular pipes. The review is composed of four sections. Section 1 provides basic heat transfer theory for laminar and turbulent flow in circular pipes. The differential equations for conservation of mass, momentum, and energy are briefly developed. Heat transfer solutions and techniques are discussed for cases where radiative heat transfer is neglected. Section 2 provides basic transport theory for radiative heat transfer in participatory media. A macroscopic …
The Contemporary Platinotype, John Hafey
Lifo Perishable Inventory (S,S,T) Model And Its Related Discount Policy, Yuan-Shyi Chiu
Lifo Perishable Inventory (S,S,T) Model And Its Related Discount Policy, Yuan-Shyi Chiu
Theses
The objective of this thesis is to determine the optimal (s,S,T) ordering policy for a perishable inventory system with a fixed product lifetime and Poisson demand. The simulation technique is utilized to identify the optimal ordering policy which minimizes the total cost consisted of ordering, holding, shortage, and outdate costs. Upon the establishment of the optimal ordering policy, a discount policy on the outdating items is proposed to provide decision maker(s) with tradeoff between the profit and the average outdate cost.
The computer programs written in FORTRAN are designed to generate the optimal (s,S,T) ordering policy of any above-mentioned inventory …
Mathematical Model Of Temperature Profiles And Coking In A Crude Oil Heater Tube, Joseph C. Polimeni
Mathematical Model Of Temperature Profiles And Coking In A Crude Oil Heater Tube, Joseph C. Polimeni
Theses
A mathematical model to predict temperature profiles and coking of crude oil in furnace tubes is presented. The model assumes that the coking mechanism is due to a reaction in the laminar sublayer, whose rate depends upon the temperature profile. That profile is obtained by a numerical solution of the appropriate transport equations, with velocity profiles that may be laminar or turbulent, and including the temperature dependence of the crude oil properties. In addition, velocity and temperature profiles were adjusted when necessary to ensure closure of the heat and material balances. As a by-product of this study, a correction was …
An Experimental Investigation Of Round Normal Impinging Jet Of Water, Dipendra Saharay
An Experimental Investigation Of Round Normal Impinging Jet Of Water, Dipendra Saharay
Theses
The various flow parameters of round jets of water impinging normally on a flat plate are measured experimentally. The velocity and pressure distribution along the axis of the jet at various sections of the jet parallel to the horizontal lucite striking plate and along the impinging surface was found. The nozzles used were 1/4 inch and 1/2 inch in diameter. The Reynolds number based on the nozzle diameter was 15,000 to 25,000. The distance from the jet origin to the deflecting boundary ranged from thrice the diameter of the jet to twelve and sixteen times the diameter of the jet. …
On The Stability Of Columns Of Varying Cross-Sections, Vallanore K. Suresh
On The Stability Of Columns Of Varying Cross-Sections, Vallanore K. Suresh
Theses
The purpose of this thesis is to study the stability of columns with axially varying cross-sections using approximate Methods. Much of the work has been done on the stability of the columns by using various techniques. This study, in part, verifies some of the above theories by Numerical Computations. Solutions for the optimal dimensions of columns to withstand a particular load without buckling are shown for a variety of columns,viz.,column bounded by linear taper, paraboloid of revolution and in general a column bounded by a curve of n'th degree.
The problem of columns of varying cross-sections can be solved by …
Preparation And Characterization Of Blocked Diisocyanate Monomers For Dental Applications, Stephen Richard Angeli
Preparation And Characterization Of Blocked Diisocyanate Monomers For Dental Applications, Stephen Richard Angeli
Theses
Six new monomers were prepared and characterized. The six monomers are blocked diisocyanate compounds. In the preparation 2,4-tolylene diisocyanate was first blocked with 2=hydroxyethyl methacrylate in the para NCO position. Six different blocking agents were then used to block the ortho NCO in the preparation of the monomers: (1) p-methoxyphenol, (2) m-methoxyphenol, (3) o-methoxyphenol, (4) p-chlorophenol, (5) m-chlorophenol, and (6) o-chlorophenol. The six monomers were characterized by mp, liquid chromatography, IR, NMR, and elemental analysis. All the characterizations show that the monomers are indeed the desired products.
Experimental Investigation Of An Axisymmetric Air Jet Impinging On A Flat Plate, Saibal Basu
Experimental Investigation Of An Axisymmetric Air Jet Impinging On A Flat Plate, Saibal Basu
Theses
Experimental investigation was carried out on a circular, submerged, axisymmetric turbulent air jet-with normal impingement on a smooth, flat, square lucite plate, The flow was considered to be incompressible because the velocity of the jet was not too high, with Mach Number of the order of 0.3. Three nozzle diameters of 0.375" (9,525 mm), 0.250" (6.35 mm) and 0.125" (3.175 mm) were used with Reynolds number ranging from 7,000 to 70,000.
Various flow parameters were measured to obtain the velocity and pressure distributions at the surface of the flat lucite plate and along the centerline of the normal impinging air …
A Marketing Plan For The Graduate Computer Graphics Design Program At Rit, Gary Hemdal
A Marketing Plan For The Graduate Computer Graphics Design Program At Rit, Gary Hemdal
Theses
None provided.
The Pot As Nurturer: An Approach To Functional Pottery, Marian L. Baker
The Pot As Nurturer: An Approach To Functional Pottery, Marian L. Baker
Theses
What is meant by life in pots? Animals drawn on the sides? Arms and legs sprouting out from the clay walls? a big face on the side like those horrible mugs you see in tacky gift shops? Is it a quality in the throwing? A tiny piece of clay frozen out of place on the wall? A fat round shape that may speak of pregnancy or over-eating? Gooey slip dripping off the sides? A distorted portion: lip, foot, wall? A disoriented pot, leaning on its left foot? A drunk pot, ready to fall over? It it none of these, but …
Landscape: Inside And Out, Linda E. Mccausland
East Hill Farm, Stephen Kurtz
A Writing Curriculum For Grade Five Using Literary Models, Virginia Ann Smith
A Writing Curriculum For Grade Five Using Literary Models, Virginia Ann Smith
Theses
Three major areas of concern influenced this writer's decision to investigate writing and develop a writing curriculum for fifth grade children based on the use of literary models as springboards for writing .
Recognition of the importance of adequate writing skills in order to participate in various functions of our society provided the first area of concern. The second major concern was related to the apparent difficulties and failures experienced by students in coping with the complexities of the writing process. This concern stemmed from classroom experiences while trying to help children learn writing skills. A third area of concern …
Effect Of Title Iv-B Funding In St. Charles County Public Libraries, 1976-1982, Lucinda Menkhus
Effect Of Title Iv-B Funding In St. Charles County Public Libraries, 1976-1982, Lucinda Menkhus
Theses
In 1974 Congress consolidated several existing educational programs into the Elementary and Secondary Education Act Title IV. Part B of that bill was designed to provide instructional materials for schools. A majority of Title IV-B money nationwide was used to purchase library books, audiovisual hardware, and audiovisual software.
This study was designed to examine the possible benefits Title IV-B funding had on St. Charles j County school libraries. Between 1976 and 1982, 15 school libraries were able to meet Missouri State standards in the size of the collection category. This study was needed to show that Title IV-B played an …
Geometric Abstract Design, Sanghye Han
Geometric Abstract Design, Sanghye Han
Theses
This thesis is a presentation of four grid designs. They are woven on a multi-harness loom and utilize a strip-weaving technique. The designs are based on a series of colors, and consist of three grid elements; the line, the square and the rectangle. Through the variation of colors and the repeated arrangement of patterns consisting of the aforementioned grid elements, my intention is to have a form of geometric abstraction result from my designs.
A Literature Curriculum For Developing Concepts, Vocabulary And Literature Skills In Second Grade, Merry Sue Schmidt
A Literature Curriculum For Developing Concepts, Vocabulary And Literature Skills In Second Grade, Merry Sue Schmidt
Theses
Children's literature doesn't just happen, To make the best use of instructional time and assure the quality of children's literary experiences, this author feels, a planned program is necessary. This curriculum was developed to be used with second grade students in the regular classroom. It provides a specific set of goals and objectives , as well as questions, activities, a bibliography of children's books and methods of evaluation.
The guided literature experiences provided by this curriculum will stimulate the imagination, enhance productive and critical thinking skills, improve comprehension and increase the child's understanding and use of vocabulary. By increasing these …
Photo Constructions, Silvia Lizama
Magenta Nights, Thomas Shillea
An Experimental System For Observation Of The Rat Coronary Microcirculation Using Digital Image Processing, Wolfgang Braun
An Experimental System For Observation Of The Rat Coronary Microcirculation Using Digital Image Processing, Wolfgang Braun
Theses
A system was constructed which allows direct observation of the coronary microcirculation of the beating rat heart. An EKG triggered strobe is used on the microscope light source to "stop" the action of the beating heart so the surface microvessels can be observed di rectly under the microscope. Experimental results are recorded on videotape and played back for frame-by-frame analysis of the data using digital Image processing techniques such as digital filtering, image extraction, image enhancement and edge detection.
The application of image enhancement techniques (high order and low order enhancement methods ) as well as edge detection using a …
Industrial Parameters For Applying New Technology, Michael Cimino
Industrial Parameters For Applying New Technology, Michael Cimino
Theses
Industrial Parameters for Applying New Technology is a paper devoted to the study of the role 'of' robots in today's manufacturing environment. Industry looks forward to robotic technology to solve, its declining productivity dilemma. The purpose of this paper is to' aid a Prospective robot buyer in selecting the appropriate application and in particular a suitable robot for that application. A listing of robot performance characteristics, criteria chart, and evaluation table were developed to guide the engineer through the necessary steps required in selecting a successful robot application.
The history of robotics is discussed briefly along with an explanation of …
Selection And Problems Faced By The Handicapped In An Industry, Hemank Babulal Dharia
Selection And Problems Faced By The Handicapped In An Industry, Hemank Babulal Dharia
Theses
This thesis reports on the problems faced by handicapped workers placed in an industrial situation. It discusses some of the frustrations, aspirations and hopes of the disabled to find suitable work as well as the fears and misconceptions of employers who consider the employment of the handicapped.
There is discussed the work done by the author in designing jigs and fixtures to assist handicapped workers in production as well as the models of placement, job understanding and rehabilitation efforts.
The work was done at the Delaware County Branch of the Pennsylvania Association for the Blind, Chester, Pennsylvania where the author …