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Articles 9931 - 9960 of 10267
Full-Text Articles in Entire DC Network
Thesis Diary: September 1971- May 1972, Bonnie Johanna Gisel
Plastics In Art, Patricia Hincks
The Evolution Of The Crafts From Function To Pure Sculpture, Elaine Martin
The Evolution Of The Crafts From Function To Pure Sculpture, Elaine Martin
Theses
None provided.
Liberated Paintings, Susan Russo
Coffee, Chocolate, And Liqueur Sets, Carolyn Law
Graphic Image And Ceramic Form, Sandra Butler
Surface Enhancement Of Handbuilt Forms, Sara Rubin
Wood Firing, Robert Woo
Landscape Forms, Colleen Kuntz
Landscapes In Gum, Barbara Johnson
Research And Exploration Of Stone Settings, Jonathan O. Parry
Personalized Glazes For My Work, Robert Black
Salt Glazed Clay Surfaces, Brian Williams
The Carousel: An Exploration Of Etching And Drypoint Techniques Through Integration Of Organic And Mechanical Symbols, Paul Porter
The Carousel: An Exploration Of Etching And Drypoint Techniques Through Integration Of Organic And Mechanical Symbols, Paul Porter
Theses
None provided.
Flow Behavior Of Molten Polymer Blends, Kryspin Pawel Maciejewski
Flow Behavior Of Molten Polymer Blends, Kryspin Pawel Maciejewski
Theses
An experimental study of molten polymer blends was made using the Instron Capillary Rheometer. The materials investigated were two phase blends of non-crystalline polymers (poIymethylmethacrystate-low Mw-polyvinylacetate, polyvinylacetate-polystyrene, polymethylmethacrylate-low Mw-polystyrene, polymethylmethacrylate-high Mw-polystyrene), crystalline polymers (polyethylene-polypropylene) and combinations of non-crystalline-crystalline polymers (polyethylene-polystyrene). Two methods of sample preparation were used, blending of a polymer pair in a molten state by the use of Brabender blender, and a simple manual blending of pellets in desired proportion. The Brabender blended polymer pairs show lower viscosities, this is interpreted molecularly as a result of a reduction of the amount of chain entanglement on shearing of the …
Photographic Documentation: A Personal Development And Refinement Of A Photographic Approach In Making Visual Documentary Statements, Michael Robert Soluri
Photographic Documentation: A Personal Development And Refinement Of A Photographic Approach In Making Visual Documentary Statements, Michael Robert Soluri
Theses
Not provided.
Pulse-Width-Modulation Control For Second Order Plants Via A Quadratic Criterion, Charles Gebo
Pulse-Width-Modulation Control For Second Order Plants Via A Quadratic Criterion, Charles Gebo
Theses
This paper presents a mathematical study of the control of a second order plant having real distinct roots by use of pulse -width-modulation. An integrator connected between the pulse-width-modulator and the plant is a fixed element of the control loop. The integral-square error is used as the Index of performance. The ISE is minimized with the constraint that the pulse modulator is limited to a maximum of one output reversal for a step change in input. Derivation of the equation which will predict the exact switching time of the modulator output to minimize the performance index for any step amplitude …
Treatise On Combined Metalworking Techniques: Forged Elements And Chased Raised Shapes, Bonnie Gallagher
Treatise On Combined Metalworking Techniques: Forged Elements And Chased Raised Shapes, Bonnie Gallagher
Theses
Not listed.
A Study Of The Kinetics Of "Lith" Development, David Turbide, Michael Williams
A Study Of The Kinetics Of "Lith" Development, David Turbide, Michael Williams
Theses
A kinetic infrared scanning densitometer was used to study lithographic development in real-time. The instrument proved very effective after several slight improvements to increase sensitivity and obtain Density vs Time of Development curves directly- It was noted that this apparatus could also be used lot a study of the penetration of solutions into an emulsion. An exposure series on a normal Kodalith system indicates a decrease in induction time and an increase in maximum rate (up to diffusion limit) with increasing exposure. A series of sulfite concentrations shows that the lith effect becomes detectable only below a sulfite concentration of …
Digital Executive Control Of A Hybrid Computing System, Glenn Kauffman
Digital Executive Control Of A Hybrid Computing System, Glenn Kauffman
Theses
This is a paper describing an interface system integrating an HP 2116B digital computer and an EAI TR-48' analog computer. The interface system provides the digital computer with the capability to control the analog computer operational modes, to read the output signals on the analog computer amplifiers and coefficient settings of the potentiometers, and to control and sense numerous interface trunks.
Design And Construction Of A Digital Pulse Generator, David Myer
Design And Construction Of A Digital Pulse Generator, David Myer
Theses
This pulse generator was built to complement the Stroboscope 501, a high speed multi-flash unit capable of producing up to 6000 flashes per second. The Stroboscope is equipped with a electro-mechanical frequency generator, however a solid state pulse generator has the advantages of being highly accurate and repeatable. The basic design criteria were that the generator have several selectable frequencies within the limit of the Stroboscope, be able to count several different amounts of pulses and then close off automatically and be triggerable from an exterior source. The unit designed meets all these specifications. A high speed multi-flash strobe has …
Automatic Design Of Switching Networks, Darryl Dhein
Automatic Design Of Switching Networks, Darryl Dhein
Theses
This thesis develops a method for automatically selecting an optimum set of prime implicants of a Boolean function. The optimization algorithm is based on a minimum cost of mechanization of the simplified function. A FORTRAN IV computer program to implement this approach was written and is included as part of this thesis. This program was developed within the framework of an overall theory for the automation of the design of switching networks. A programing structure as well as the theory for the automation of design is given. Also included is an outline of further areas of study which would be …
Print Quality Measurement: The Application Of Instrumental Analysis To Graphic Arts, John Kuder
Print Quality Measurement: The Application Of Instrumental Analysis To Graphic Arts, John Kuder
Theses
Instrumental analysis is a powerful tool when evaluation of print quality is desired. Traces of prints were obtained "by scanning them with a microdensitometer equipped with a reflection reading head attachment. The ability of newsprint to produce a good print under specified printing conditions is evaluated by measuring the uniformity of the contrast between dots and backgrounds, as well as the uniformity of the dots. A method of evaluation for these scans is formulated and discussed. Conclusions and reccomendations are made.
Relaying Pannel Road 345 Kv, Robert Jones
Relaying Pannel Road 345 Kv, Robert Jones
Theses
The protective relay schemes for the new Rochester Gas and Electric 's 345 kV tie at Pannell Road are described. The line protection consists of two sets of permissive overreaching, direct underreaching, transferred trip schemes; one being electromechanical and one being solid state. A brief description of the basic relay schemes, a list of relays and an elementary diagram is included.
A Photomicrographic Method For The Detection Of Oxygen Content In The Hemoglobin Of The Red Blood Cell, Bruce Martin Levine, Craig Sager
A Photomicrographic Method For The Detection Of Oxygen Content In The Hemoglobin Of The Red Blood Cell, Bruce Martin Levine, Craig Sager
Theses
Previous attempts at photographing the hemoglobin in the red blood cells have been confined to the making of two separate images of the same blood sample; one image is recorded using a wavelength band in the isobestic point region of the spectral distribution of oxygenated and reduced blood, and the other image is made using a wavelength band of radiation in the area of greatest difference in absorption between the two blood states. The method described here attempts to obtain a measurement of oxygenation by means of only one exposure using both regions of wavelengths simultaneously. The response is the …
Design And Construction Of A Standard Planetary Microfilming Camera Target Array (Pmta), Bruno Glavich, Richard Johnson
Design And Construction Of A Standard Planetary Microfilming Camera Target Array (Pmta), Bruno Glavich, Richard Johnson
Theses
After researching the current applications, problems, and evaluation techniques of planetary microfilming systems, the authors designed and constructed a standard Planetary Microfilming camera Target Array (PMTA) that essentially satisfied three criteria, i.e. 1) inexpensive to produce, 2) simple to use, and 3) satisfies testing criteria for both microfilming equipment manufacture and user. Ten evaluation parameters were incorporated in two targets PMTA-I and PMTA-II. PMTA-I includes tests for 1) resolution, 2) readability of printed matter, 3) reduction ratio, 4) exposure and processing, 5) full field visual distortion, and finally 6) corner visual distortion. PMTA-II was designed to evaluate, 7) quatitative distortion, …
Optical Measurement Techniques For Blanket Release Characteristics On Web Presses, Joseph Griggs, Ronald Sandford
Optical Measurement Techniques For Blanket Release Characteristics On Web Presses, Joseph Griggs, Ronald Sandford
Theses
Offset printing involves the transfer of ink from the image areas of the printing plate to the paper through an intermediate blanket. The blanket is usually composed of synthetic fiber materials (e.g. nylon). Blanket-paper-ink characteristics contribute to limits of printing quality and mechanical press operation. Paper and blanket physical surface characteristics and also ink tackiness contribute to adhesion between the paper and blanket. If the adhesion is sufficiently large, the force required to separate the paper from the blanket may cause deterioration of print quality or press operational problems. Deterioration of the printed quality may include picking of coating from …
Design, Fabrication And Evaluation Of A Monochromatic Sensitometer, Jay Johnson
Design, Fabrication And Evaluation Of A Monochromatic Sensitometer, Jay Johnson
Theses
An intensity scale monochromatic sensitometer was constructed using a Bausch and Lomb single-pass diffraction-grating monochromator as the dispersing device. A ribbon-filament tungsten lamp was used to supply the radiant energy to the monochromator. The instrument was calibrated 2 radiometrically and was shown to have a maximum irradiance of 10 ergs/cm 2 2 at 425 nm, 43.7 ergs/cm at 550 nm and 26.1 ergs/cm at 700 nm. Exposure is accomplished by transporting the film and step tablet past a slit at a constant velocity. Several film velocities and slit widths are available to produce exposure times ranging from 0.003 to 2.0 …
A Study Of Latent Image Formation In Photographic Emulsions Subjected To A Combination Of High And Low Intensity Exposures, George Macmanus
A Study Of Latent Image Formation In Photographic Emulsions Subjected To A Combination Of High And Low Intensity Exposures, George Macmanus
Theses
None provided.
A Study Of Zoomorphic Abstractions With Raku Sculpture, Andrew Krouse
A Study Of Zoomorphic Abstractions With Raku Sculpture, Andrew Krouse
Theses
None provided.