Showing papers by "University of Wisconsin–Milwaukee published in 1983"
TL;DR: In this article, a constitutive relation for active nucleation site density is developed in pool boiling and extended to forced convective nucleate boiling, which is in relatively good agreement with direct measurements available in the literature.
318 citations
TL;DR: In this article, the authors investigated the use of reduction in intended effort as a strategy for protecting self-esteem from the threat of anticipated failure and found that people reduce the amount of effort they intend to exert when they expect a low probability of success on a highly ego-relevant task.
129 citations
TL;DR: In this paper, the X-ray-induced photoelectron lines and Auger transitions of metallic vanadium and two vanadium oxides are compared and discussed for vanadium in the maximal valence state, with a 3 d 0 electron configuration, and in the state with 3 d 1 electron configuration.
118 citations
TL;DR: In this paper, the chemisorption of O2 and NO was investigated at −78 °C and at room temperature using pulse-flow and volumetric techniques. But the results were not consistent with the anion vacancy concentration, and the results could be rationalized by assuming that these chemisors took place on Mo2+ centers (two anion vacancies on the same Mo).
115 citations
TL;DR: Bubble departure diameters have been correlated for water over a wide range of pressures and the averaged deviation of the experimental data from the proposed correlation is approximately ±33% and is typical of most boiling correlations as discussed by the authors.
110 citations
TL;DR: In this article, a series of rhenia-alumina catalysts were made using an equilibrium adsorption technique using laser Raman, infrared, and visible reflectance spectroscopy.
93 citations
TL;DR: In this paper, the Flambeau River Hemlock-Hardwood Scientific Area (Sawyer County, Wisconsin) was leveled by a downburst of hurricane-force winds.
Abstract: On 4 July 1977, the Flambeau River Hemlock–Hardwood Scientific Area (Sawyer County, WI) was leveled by a downburst of hurricane-force winds. This paper documents preblowdown and postblowdown composition in a 61-ha portion of a state Scientific Area. Total stand basal area after the blowdown was reduced to 6% of prestorm levels. Total seedling density increased greatly following the blowdown, especially that of Betula alleghaniensis Britt. Acer saccharum Marsh, continued to dominate the relatively unaffected sapling layer. A dense shrub layer of Sambucus pubens Michx. developed. Such massive blowdowns do not appear uncommon in northern Wisconsin. Implications for forest regeneration and structure are discussed.
86 citations
TL;DR: In this article, the problem of classifying pairs of n × n complex matrices (A, B) under the simultaneous similarity (TAT−1, TBT−1) was solved completely and explicitly.
83 citations
TL;DR: In this article, a more general melting and solidification model is proposed to account for an interesting phenomenon, namely, the existence of a two-phase zone in which partial phase change can occur.
83 citations
TL;DR: Although most observations are qualitatively similar to data from heterotrophic microbial chemostat studies, a close fit to the rotifer steady state observations was obtained only when K was assumed to be variable rather than constant and Numerical simulations of the same model only approximately reproduced transient data.
Abstract: The population dynamics of Bruchionus calyc$orus were studied in two-stage chemostat cultures. Chlorelln pyrenoidosu was supplied continuously from a steady state culture growing with constant illumination on limiting nitrate. Rotifer growth in the second stage (in the dark) was limited by the rate of supply of algae. The algal supply rate and rotifer specific growth rate, p, were determined by the second-stage dilution rate, D (p = D in the steady state). Population densities and size-age structures were determined with an electronic particle counter. Small body size and obligate amictic females apparently were selected in these chemostats. The growth rates observed were the highest yet recorded for any species of Brachionus. The chemostat system facilitated unambiguous determinations of rotifer growth and fecundity, since food was supplied and wastes were removed at continuous, controlled rates. Specific ingestion and loss rates, yield (net rotifers produced/algae ingested), production (rotifers producedah-I), and rotifer standing crop increased directly with CL. Although most observations arc qualitatively similar to data from heterotrophic microbial chemostat studies, a close fit to the rotifer steady state observations was obtained only when K was assumed to be variable (an inverse function of p) rather than constant. Numerical simulations of the same model only approximately reproduced transient data. Microbial growth models may be useful to represent rotifer growth at or near steady state but are inadequate to explain moderate to large transient fluctuations of populations.
80 citations
TL;DR: This article examined the social and cultural factors which bind gang members together and look at the way non-residents join gangs in Chicano gangs in Los Angeles, finding that the widespread pattern of non-resident gang membership reflects the nature of impoverished Chicano settlements.
Abstract: Researchers have long assumed that gang members live in the territory they defend as their turf. Our research into two Chicano gangs in East Los Angeles show that many do not. We examine the social and cultural factors which bind gang members together and look at the way non-residents join gangs. The widespread pattern of non-resident gang membership reflects the nature of impoverished Chicano settlements in Los Angeles. Our findings suggest that the ecological premises of the old Chicago school of sociologists no longer apply to gangs in modern U.S. cities.
TL;DR: In this paper, the scaling behavior of interacting quantum field theory in curved space-time may be obtained from the effective action using the background-field method, and the behaviour of a non-abelian gauge theory with fermions is studied in the high curvature limit.
01 Jan 1983
TL;DR: In Barbados, dolines developed on an uplifted series of raised reef terraces provide a unique opportunity to investigate the long-term formation and change of karstic depressions as mentioned in this paper.
Abstract: In Barbados, dolines developed on an uplifted series of raised reef terraces provide a unique opportunity to investigate the long-term formation and change of karstic depressions. In a 124.5 km2 area, 1179 dolines were located and 360 surveyed. Dolines occupy only about 1 percent of the total area. There are spatial controls on doline development, but dolines in areas of different elevation and age differ from one another in a way that suggests sequential development. Doline densities increase up to an altitude of 150 m and decline thereabove. Distributions indicate clustering, but there is little evidence of structural controls producing preferred long-axis orientation. Doline and dry valley development is competitive, and there are two doline subpopulations: a larger one in interfluve areas and a smaller one in valleys. Doline complexes develop through time partly by expansion, interference, and coalescence and partly by subdivision.
TL;DR: In this paper, the response of a small metal sphere to a uniform electrostatic field is calculated within density-functional theory, where gradient-expansion approximation is used for the kinetic energy functional, while exchange and correlation are treated in the local density approximation.
Abstract: The response of a small metal sphere to a uniform electrostatic field is calculated within density-functional theory The gradient-expansion approximation is used for the kinetic-energy functional, while exchange and correlation are treated in the local-density approximation A jellium model is assumed and the electron density is determined by a variational method Calculations were performed for spheres containing between 5 and 8000 electrons The applied field was found to induce a substantial amount of charge outside the sphere This causes the electronic polarizability $\ensuremath{\alpha}$ to be larger than the classical value ${R}^{3}$, where $R$ is the radius of the sphere Our calculations give $\ensuremath{\alpha}={(R+\ensuremath{\delta})}^{3}$, where $R+\ensuremath{\delta}$ plays the role of an effective radius, and $\ensuremath{\delta}$ is approximately 20 au for the electron-radius parameter ${r}_{s}=2$ and is approximately 10 au for ${r}_{s}=4$ Our calculated values of $\ensuremath{\delta}$ are nearly independent of $R$ As $R$ approaches infinity, $\ensuremath{\delta}$ approaches the image-plane distance for the problem of a flat surface It is shown that there is a force sum rule that is not well satisfied by previous calculations, and is approximately satisfied by most of our calculations
TL;DR: The ability to filter confers a competitive advantage on alewife when small prey are abundant as they were in the mid 1960s in Lake Michigan, and if the zooplankton are large, bloater young-of-year do not suffer this relative disadvantage.
Abstract: Alewife, Alosa pseudoharengus, and bloater, Coregonus hoyi, are common planktivores in Lake Michigan. Both alewife and bloater use a variety of feeding modes. Alewives can filter, gulp and particulate feed; bloaters can only gulp and particulate feed. We examined handling time per prey and probability of capture for alewife and bloater particulate feeding on Mysis relicta. Using these estimates and available data for filtering alewives, cost curves were derived for alewife and bloater particulate feeding and for alewife using all three modes of feeding. Alewives filter small prey relative to their own body size and particulate feed on larger prey. Feeding mode appears to be dependent on prey size and density and shifts in feeding mode are apparently based on maximizing biomass eaten per time. The ability to filter confers a competitive advantage on alewife when small prey are abundant as they were in the mid 1960s in Lake Michigan. If the zooplankton are large, bloater young-of-year do not suffer this relative disadvantage. In fact, large bloaters can consume prey on the bottom not available to alewife. This shifting competitive balance may explain, in part, the observed dynamics of alewife and bloater.
TL;DR: In this paper, the authors present preliminary findings of recent field studies on Miocene Lower Siwaliks deposits of southwestern Nepal, showing that the fauna is largely aquatic, being dominated by fish, turtles, crocodiles and aquatic snakes.
Abstract: We present here preliminary findings of recent field studies on Miocene Lower Siwaliks deposits of southwestern Nepal. Twenty-four vertebrate taxa are now represented from over 50 localities. The fauna is largely aquatic, being dominated by fish, turtles, crocodiles and aquatic snakes. Lithologies indicate deposition in sluggish streams and associated environments. Biostratigraphy indicates correlation between the composite Nepal fauna and Lower Siwaliks faunas of India and Pakistan, a conclusion corroborated by a palaeomagnetic study showing an age of 9–10 Myr for some of the fossil sites. A hominoid specimen, found in Tinau Khola, is 9.0–9.5-Myr old. It is similar to several specimens of small Miocene hominoids from Pakistan and India, and helps fill the geographical gap between hominoids collected previously in northwestern India and southern China.
TL;DR: In this article, the stability and behavior of CuY in the redox cycles with COO2, H2O2, and CONO have been studied using a microbalance operating in the flow mode and with a standard (BET) volumetric system.
TL;DR: In this paper, it was shown that a class of pulsars with nearly identical frequencies may result from the collapse of rapidly rotating white dwarfs, and it is likely that the fast pulsar, PSR 1937+214, rotates more slowly than this.
Abstract: Neutron stars for which the ratio T/Vertical BarWVertical Bar of kinetic to gravitational potential energy exceeds approx.0.08 are likely to be unstable and to spin down by gravitational-wave--driven oscillations. A class of pulsars with nearly identical frequencies may thus result from the collapse of accreting, rapidly rotating white dwarfs. It is likely that the fast pulsar, PSR 1937+214, rotates more slowly than this, but the question remains open partly because of uncertainty in the equation of state.
TL;DR: In this article, a pseudo-first principles technique for Auger quantitation was used to calculate relative Auger yields, compared to the experimental sensitivity factors found in the Handbook of Auger Electron Spectroscopy, and plots of the calculated yields for 3, 5 and 10 kV primary beams were superimposed upon the Handbook sensitivity factor graphs.
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01 Aug 1983TL;DR: In this article, a variational calculation based on the density functional formalism is performed for small metal spheres, where the electron density is expressed in terms of two variational parameters chosen to minimize the energy.
TL;DR: In this article, the impact of highway runoff on benthic macroinvertebrate abundance and composition was studied in a southeastern Wisconsin USA, stream during 1980-81, and the authors found that highway runoff had minimal effect on stream macroinverses.
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01 Jan 1983TL;DR: Addams and her daughters tackled issues of suffrage, workers rights, child labor laws, juvenial deliquency, prostitution, and immigration as mentioned in this paper, and Edith helped found the University of Chicago School of Social Service Administration.
Abstract: Contemporaries of Jane Addams, tackled issues of suffrage, workers rights, child labor laws, juvenial deliquency, prostitution, and immigration. Grace worked with the U.S. Children's Bureau and Edith helped found the University of Chicago School of Social Service Administration.
TL;DR: It is suggested that ASL-8052 is an ultra-short acting β receptor blocking agent with vasodilator effects in rabbits, and the liver may play a significant role in the clearance of ASL -8052 from circulation.
TL;DR: In this article, the authors define a model that covers the multimachine extensions of all existing flow shop problems with time lags as well as flow-shop problems where setup, processing and release times are separated.
Abstract: This paper defines a model that covers the multimachine extensions of all existing flow-shop problems with time lags as well as flow-shop problems where setup, processing and release times are separated. Approximate solutions and lower completion time bounds are developed for the restricted and unrestricted cases.