A Study of a Method to Predict Printing Quality of Paper by Means of Smoothness and Elongation Test Results

The object of this thesis is to investigate the use of smoothness and elongation test results as criterion for evaluating the printing quality of paper. The relationship of smoothness and printing quality has been known for many years and in all previous work it has been shown to be influential to printing quality. The relationship of elongation and printing quality has never been investigated. The experimental procedure consisted of testing the paper samples for smoothness and elongation, and determining the printing quality of the different papers with the I. G. T. Printability Tester. The results of the analysis of the experimental data can be used to indicate good or poor printing quality of paper

Improved electrodes for skin contacts

Design is described of thick, flexible electrodes with appropriate metal surfaces which prevent unnecessary skin motion. Electrodes provide sufficient radial pressure directed toward body surface to depress skin a noticeable portion of its normal resilient thickness

Age and Sex Differences in the Responses of Adolescents to the Hand Test

The purpose of the present study was to investigate age and sex differences in the responses of adolescents to the Hand Test (Wagner, 1962). This instrument was administered to 44 14-year olds (26 males and 18 females), 40 15-year-olds (23 males and 17 females), 45 16-year-olds (19 males and 26 females), and 34 17-year-olds (13 males and 21 females) who were enrolled in grades 9, 10, 11, and 12 of a public high school. Data for the 24 Hand Test variables was normalized using a Z-score transformation on the group mean of all subjects to allow for simultaneous analysis of the effects of age, sex, and interactions. Each of the 24 variables was analyzed separately with 4 (Age) X 2 (Sex) analysis of variance. From the results of the analysis of variance, it appeared that there was an age difference for the variable of Exhibition: F = 3.22, p. \u3c.01. However, post hoc analyses involving a oneway test for trends and a Scheffe\u27s multiple comparison found a significant nonlinear trend for this variable: F = 4.78, p. \u3c .03. The Scheffe\u27s comparison indicated that none of the four age group means were significantly different from one another. Thus, the raw score mean for the variable of Exhibition increased across the 14-year-old, 15-year-old, and 16-year-old group, and then decreased at the 17-year-old level. A significant difference with regard to the main effect of sex of subject was found for the variables of Exhibition and Crippled. Males gave both more Exhibition and Crippled responses. Three Hand Test variables exhibited Age X Sex interactions: Direction, Tension, and Environmental. Fourteen-year-old females gave the most responses scored as Direction, while 14-year-old and 17-year-old males gave the least. With regard to Tension responses, 15-year-old males gave the least responses, and 17-year-old females gave the most. For the Environmental variable, 15-year-old females gave the least responses, and 17-year-old males gave the most. The small number of sex differences in responses found in this investigation suggests that sex roles may be changing, in that our society is becoming more androgynous, and thus differences in sex roles are becoming less pronounced. The lack of age differences and the small number of interactions found in this study indicates that the personality, as measured by the Hand Test, is relatively stable across the late adolescent years

1918-11-16, William to Robert

https://digitalcommons.chapman.edu/lindstadt_brothers_collection/1065/thumbnail.jp

Parallel Deterministic and Stochastic Global Minimization of Functions with Very Many Minima

The optimization of three problems with high dimensionality and many local minima are investigated under five different optimization algorithms: DIRECT, simulated annealing, Spall’s SPSA algorithm, the KNITRO package, and QNSTOP, a new algorithm developed at Indiana University

Solar concentrator technology development for space based applications, volume 2

Thermoelectric conversion using a radio-isotope heat source has been used where outer planetary space craft are too far away for absorbing significant solar energy. Solar dynamic power (SDP) conversion is one technology that offers advantages for applications within the inner planet region. Since SDP conversion efficiency can be 2 to 3 times higher than photovoltaic, the collecting surfaces are much reduced in area and therefore lighter. This becomes an advantage in allocating more weight to launched payloads. A second advantage results for low earth orbit applications. The reduced area results in lower drag forces on the spacecraft and requires less reboost propellant to maintain orbit. A third advantage occurs because of the sun-to-shade cycling while in earth orbit. Photovoltaic systems require batteries to store energy for use when in the shade, and battery life for periods of 10 to 15 years is not presently achievable. For these reasons the Solar Dynamics and Thermal Systems Branch at NASA LeRC has funded work in developing SDP systems. The generic SDP system uses a large parabolic solar concentrator to focus solar energy onto a power conversion device. The concentrators are large areas and must therefore be efficient and have low specific weights. Yet these surfaces must be precise and capable of being stowed in a launch vehicle and then deployed and sometimes unfurled in space. There are significant technical challenges in engineering such structures, and considerable investigation has been made to date. This is the second of two volumes reporting on the research done by the Advanced Manufacturing Center at Cleveland State University to assist NASA LeRC in evaluating this technology. This volume includes the appendices of selected data sets, drawings, and procedures. The objective of the grant was to restore the solar concentrator development technology of the 1960s while improving it with advances that have occurred since then. This report summarizes the work done from January 1989 through December 1991

Solar concentrator technology development for space based applications, volume 1

Thermoelectric conversion using a radio-isotope heat source has been used where outer planetary space craft are too far away for absorbing significant solar energy. Solar dynamic power (SDP) conversion is one technology that offers advantages for applications within the inner planet region. Since SDP conversion efficiency can be 2 to 3 times higher than photovoltaic, the collecting surfaces are much reduced in area and therefore lighter. This becomes an advantage in allocating more weight to launched payloads. A second advantage results for low earth orbit applications. The reduced area results in lower drag forces on the spacecraft and requires less reboost propellant to maintain orbit. A third advantage occurs because of the sun-to-shade cycling while in earth orbit. Photovoltaic systems require batteries to store energy for use when in the shade, and battery life for periods of 10 to 15 years is not presently achievable. For these reasons the Solar Dynamics and Thermal Systems Branch at NASA LeRC has funded work in developing SDP systems. The generic SDP system uses a large parabolic solar concentrator to focus solar energy onto a power conversion device. The concentrators are large areas and must therefore be efficient and have low specific weights. Yet these surfaces must be precise and capable of being stowed in a launch vehicle and then deployed and sometimes unfurled in space. There are significant technical challenges in engineering such structures, and considerable investigation has been made to date. This is the first of two volumes reporting on the research done by the Advanced Manufacturing Center at Cleveland State University to assist NASA LeRC in evaluating this technology. The objective of the grant was to restore the solar concentrator development technology of the 1960s while improving it with advances that have occurred since then. This report summarizes the work done from January 1989 through December 1991

In-flight absolute radiometric calibration of the thematic mapper

The TM multispectral scanner system was calibrated in an absolute manner before launch. To determine the temporal changes of the absolute radiometric calibration of the entire system, spectroradiometric measurements of the ground and the atmosphere were made simultaneously with TM collections over White Sands, New Mexico. By entering the measured values in an atmospheric radiative transfer program, the radiance levels of the in four of the spectral bands of the TM were determined. Tables show values for the reflectance of snow at White Sands measured by a modular 8 channel radiometer, and values for exoatmospheric irradiance within the TM passbands, calculated for the Earth-Sun distance using a solar radiometer