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Articles 10051 - 10080 of 10267
Full-Text Articles in Entire DC Network
Genre Painting, Lydia Mugambi
The Season Of Man, Karl Schantz
Hand Puppets, Robert Knorr
Gorillas Garbage And Girls, Peter Maurer
Eroticism, Dream Imagery And Symbolism, Denny Immergut
Pattern Recognition By Means Of Electric Stimuli, Melvyn Kreitzer
Pattern Recognition By Means Of Electric Stimuli, Melvyn Kreitzer
Theses
None provided.
Covered Containers And Serving Pieces, Robert C. Palusky
A Geometric/Symmetric Series, Charles Zuill
Aerial Oxidation Of Lith Developers, Joe Smith
Aerial Oxidation Of Lith Developers, Joe Smith
Theses
Lith developers, unlike conventional developers, lose alkalinity when aerially oxidized. This is attributed to the alkaline reaction of the formaldehyde-bisulfite compound (FBS) commonly employed in lith developers as a "sulfite buffer". Conventional chemical analysis methods are used to obtain data and experimentally derive an equilibrium constant for the alkaline disassociation of FBS. Chemical and sensitometric data are presented that indicate that the alkalinity loss contributes significantly to the overall loss of developer activity. It is also shown that aeriating a lith developer quantitatively converts hydroquinone to hydroquinone monosulfonate that, in turn, is a measurably active developing agent. Additional data are …
Slab Construction In Earthenware, Edward Myron Mcendarfer
The Inhibition Of Aerial Fog, John Levisky
Illustration For Childrens' Literature, Edward Parker
Application Of S-Parameter Techniques To Amplifier Design, Frank Sulak
Application Of S-Parameter Techniques To Amplifier Design, Frank Sulak
Theses
1. Discussion of s parameters and their applicability to high frequency design. 2. Measurement of s parameters and evaluation of stable operating regions. 3. Synthesis of high frequency transistor circuitry with the aid of scattering parameter design equations. 4. Verification of design theory by evaluating the performance of bread-board models.
Noise Power Ratio Testing Of Multichannel Single Sideband Communication Equipment, Per Vinther
Noise Power Ratio Testing Of Multichannel Single Sideband Communication Equipment, Per Vinther
Theses
It is shown, that Noise Power Ratio (NPR) testing of multichannel Single Sideband (SSB) transmitters should be performed loading all channels with identical white, gaussian, zero-mean noise signals in order to obtain the worst case result. A theoretical analysis of bichannel equipment under the two different input conditions: (a) statistically independent noise signals, and (b) statistically dependent noise signals; shows that the intermodulation distortion on the output of the transmitter is the same for either case. This result is extended for an arbitrary number of channels to the point of showing that the test results obtained for statistically dependent noise …
The Modulation Transfer Function Of The Human Visual System At Selected Spectral Frequencies, George L. Ayers
The Modulation Transfer Function Of The Human Visual System At Selected Spectral Frequencies, George L. Ayers
Theses
The Modulation Transfer Function of the human visual system has been determined with a sin usoidal test target, by measuring the threshold contrast as a function of spatial frequency, for monochromatic light of constant average luminace. Data were obtained for a broad band range and wavelengths of 538 and 617 nm. It is shown that a maximum MTF occurs at frequencies between 2 0 - 3 0 cycles/mm on the retina and that this sensitivity decreases for both lower and higher frequencies. Small but discrete differences appear in the curves for broad-band radiation and the green and red filtration at …
Selected Poems Of Robert Frost, Peter Basti
Polychromatic Mtf Of A Pinhole Camera, Arthur Messenger
Polychromatic Mtf Of A Pinhole Camera, Arthur Messenger
Theses
Polychromatic MTFs based on the work of Hopkins and Sayanagi are developed for a pinhole camera using standard 5500°K daylight and a black and white, and a color reversal film. On and off-axis MTF were developed for the radial and tangential cases. Conclusions are drawn about the depth of focus and "best" focal position. A monochromatic depth of field study was done, showing both the need to focus and the infinite character of the pinhole camera.
Empty Environments, Dorothy Zinker
Environmental Relationships, Michael Cotsworth
Cantilevered Chairs, William Alvut
The Black Man And The American City, Gene De Prez
Figure And Environment, Carol Davis
Functional Forms In Polyurethane Foam, Ian Walker
Series Of Modular Paintings, Kenneth Bliss
The Individual Piece, Edward Jajosky
Effect Of Column Diameter On The Frequency Response Of Water Fluidized Beds, Edward C. Maiuro
Effect Of Column Diameter On The Frequency Response Of Water Fluidized Beds, Edward C. Maiuro
Theses
The effect of column diameter on the frequency response of water fluidized beds was investigated.
Studies were made on four columns ranging from four to ten inches in diameter. Water was used to fluidize the beds which consisted of spherical glass beads .0185 inches in diameter. A trace solution of sodium chloride was sinusoidally introduced into the beds. Inlet and outlet concentrations were continuously measured by an electrical conductivity recorder. Separate frequency response tests were conducted on the inlet calmning section in an attempt to obtain the frequency response of this region alone. Results of the tests were expressed as …
Evaluation Of An Alphanumeric Target As A Means Of Determining The "Resolution" Of A Photographic Reconnaissance System, Mark Underhill
Evaluation Of An Alphanumeric Target As A Means Of Determining The "Resolution" Of A Photographic Reconnaissance System, Mark Underhill
Theses
This experiment relates three forms of resolution as predictors of recognition and identification of objects that could be of interest in a military photo-reconaissance situation. Of the three forms of resolution, two are based on existing types of resolution target currently used for assesment purposes and the third, being evaluated under this experiment, is based on a Block Letter (alphanumeric) target. The results and conclusions of this experiment will show that at a confidence of 90%, the Block Letter target provides a significantly better resolution value for the prediction of recognition and identification of the type of objects used in …
Ceramic Planters, Robert Forrest Garren
Environmental Sculptural Furniture And Furnishings, Bobby Falwell
Design In Motion: An Animated Study, David S. Porter