Showing papers by "Brigham Young University published in 1975"

Effects of Speech Rate on Personality Perception

Abstract: Using the voices of six subjects, representing various social and educational backgrounds, fifty-four synthetic voices were generated by computer. Each normal voice was both increased and decreased in rate by 121/2, 25, 371/2, and 50 per cent. Judges evaluated the fifty-four voices using a series of adjectives representing two major personality factors of " competence " and " benevolence ".Several statistical analyses were performed, and it was found that the competence factor was much more sensitive to rate manipulations than was the benevolence factor. Ratings of competence were found to increase as rate increases and decrease as rate decreases, in a linear fashion. Benevolence had an inverted U-relationship with speech rate; the highest benevolence ratings occurred with normal speech rate.

Jupiter's Magnetic Field. Magnetosphere, and Interaction with the Solar Wind: Pioneer 11

Abstract: Measurements of the magnetic field vector were obtained continuously throughout the encounter of the spacecraft with the planet Jupiter. Effects of Jupiter on the solar wind are considered along with the characteristics of the magnetopause at both low and intermediate latitudes, the three basic regions within the magnetosphere, and a spherical harmonic analysis of the Pioneer 11 measurements. The spherical harmonic representation has been used to derive contours of the magnetic field strength at the surface of Jupiter.

Comparing the Box-Jenkins Approach with the Exponentially Smoothed Forecasting Model Application to Hawaii Tourists:

Abstract: This article compares the forecasting accuracy of two forecasting techniques: (1) Box-Jenkins, and (2) exponential smoothing. The comparison is made using the tourist to Hawaii time series. An anal...

Learner Control: Beyond Aptitude-Treatment Interactions

Abstract: Cronbach and Snow (in press) have prepared an extensive review of the theoretical orientation and methodology of an aptitude-treatment interaction (ATI) approach to revision of curriculum and instructional methods, and have summarized related research. In this paper, I attempt to state briefly their theoretical position and examine some of the premises that seem to provide the basis for their argument. Following a synopsis of their views, I propose alternative premises which seem to be less limiting than those of Cronbach and Snow. This paper is not a critique of ATI research. It discusses the philosophy and premises underlying the ATI approach, not ATI procedure and methodology. I have attempted to substantiate that ATI does represent a philosophy. And I suggest an alternative theoretical methodology that follows from revised premises. In my view, the study of aptitudeEditor's Note. The material in this article was prepared pursuant to a contract with the National Institute of Education, U.S. Department of Health, Education and Welfare. Contractors undertaking such projects under government sponsorship are encouraged to express freely their judgment in professional and technical matters. Points of view or opinions do not necessarily represent the official view or opinions of the National Institute of Education.

High thermal conductivity substrate

Abstract: A high thermal conductivity substrate is formed by making a sintered diamond composite and thereafter modifying the electrical properties of the composite by leaching graphite and other non-diamond materials from the composite and subsequently infusing the leached composite with material having known electrical properties. Alternatively, a diamond composite having high thermal conductivity known electrical properties if prepared and subsequently leached to remove graphite and other materials which interfere with the known electrical properties of the composite material.

Close coupling test of classical and semiclassical cross sections for rotationally inelastic Ar-N2 collisions

Abstract: Accurate quantum mechanical close coupling (CC) integral cross sections are reported for rotationally inelastic Ar–N2 collisions at room temperature using an empirical intermolecular potential. These cross sections are used to test the infinite order sudden (IOS) approximation and the results of several methods [classical trajectories (CT), full sudden (SA), generalized phase shift (GPS), and classical limit generalized phase shift (CGPS)] as reported in the preceding paper by Pattengill. The IOS approximation works very well for cross sections involving low rotational states. The CT method works well for all the cross sections examined, justifying the popular belief that the rotational motion of N2 is essentially classical at room temperature.

Migration of hydrous fluids in the upper mantle and potassium variation in calc-alkalic rocks

Abstract: None of the existing explanations for increase in potassium in calc-alkalic rocks away from convergent plate boundaries is entirely satisfactory, and a new model is proposed for future testing based on a demonstrable mobility of incompatible constituents in the upper mantle It is postulated that hydrous fluids derived from the descending oceanic crust migrate upward into the overlying wedge of mantle, thereby scavenging and zone melting potassium and other incompatible elements from peridotite during ascent Progressively greater amounts of potassium are abstracted from increasingly thicker vertical sections of the mantle wedge It is immaterial to the model whether the fluids are hydrous silicate melts derived by partial melting of the crust, which subsequently become calc-alkalic magma, or whether they are subsolidus aqueous solutions derived by dehydration of the crust, which eventually are assimilated by partial melts of the mantle and yield calc-alkalic magma The scavenging-zone-melting process is an efficient mechanism for irreversible chemical differentiation of the upper mantle

Effect of high pressure on the crystal structures of lanthanide trialuminides

Abstract: The effect of high pressure on the crystal structures of LnAl 3 (Ln = Lanthanide) compounds has been determined by exposing LnAl 3 compounds or stoichiometric mixtures of the elements, to high-pressure and high-temperature conditions in a tetrahedral-anvil apparatus. In accordance with considerations of relative compressibilities, the application of high pressure tends to make the lower-atomic-weight lanthanides behave more like those of higher atomic weight. Thus, high-pressure-induced polymorphic changes were in the direction of structures with increased cubic character. Polymorphs or compounds first reported in this paper are BaPb 3 -type GdAl 3 , HoAl 3 -type TbAl 3 and Cu 3 Au-type LuAl 3 . The first two are hexagonal with lattice parameters α = 6.231, c = 21.173 A , and α = 6.095, c = 35.96 A , respectively. The third compound is cubic, with lattice parameter α = 4.186 A .

Middle Cambrian Stratigraphy of the House, Wah Wah, and Adjacent Ranges in Western Utah

Abstract: Geologic mapping and paleontologic evaluation of Middle Cambrian strata in western Utah have extended the usage of several formations first defined in the House Range by Walcott and have shown that new units are needed outside of the House Range for upper Middle Cambrian strata of different facies. The following usage is proposed for the House Range: Lower Cambrian — Prospect Mountain Quartzite and the lower member of the Pioche Formation; Middle Cambrian — Tatow Member of the Pioche Formation, Millard Member and upper members of the Howell Limestone, Chisholm Formation, Dome Limestone, Whirlwind Formation, Swasey Limestone, Wheeler Shale, Marjum Formation, and the lower part of the Weeks Limestone. New formations defined in the Wah Wah Mountains include the Eye of Needle Limestone (Wheeler Shale equivalent), Pierson Cove Formation (lower Marjum Formation equivalent), and the Wah Wah Summit Formation (Weeks Limestone near equivalent). The Trippe Limestone is extended from the Deep Creek Range into west-central Utah, and a new member, Fish Springs Member, is defined as a thin but widely mappable unit. The House Range contains the most continuously fossiliferous trilobite sequence, but most ranges in western Utah contain the following faunas: Albertella , Glossopleura , Ehmaniella , Ptychagnostus gibbus , Bathyuriscus fimbriatus , and Eldoradia .

Evolutionary studies of atriplex: a relic gigas diploid population of atriplex canescens

Abstract: chromosomes; the gigas form has 2n = 18 chromosomes. Several lines of evidence suggest that the gigas form is a relic diploid and the normal form is an autotetraploid derived from it. The growth rate of seedlings and new twigs is nearly twice as great in the diploid as in the tetraploid. Seed germination is faster and much better in the diploid. The tetraploid is reproductively isolated from the diploid because of a much earlier flowering period. The diploid plants possess many attributes which make them uniquely adapted to the drifting sand dune

Spinturnicid mites of Venezuela (Acarina: Spinturnicidae)

Abstract: The results of an extensive survey of spinturnicid mites of bats from Venezuela are presented in this paper. Approximately 30,000 bats were collected from a wide variety of life zones and localities. A representative sample was searched for ectoparasites. There are 3 genera of the family Spinturnicidae in Venezuela: Cameronieta , Periglischrus , and Spinturnix . Three previously described species of Cameronieta were found in the Venezuelan collection. Of the 7 species of Spinturnix previously described from the New World, 4 are reported from Venezuela. The genus Periglischrus constitutes by far the most significant segment of the Venezuelan collection. It is represented by 20 species. Of these, 15 were previously described and reported from Venezuela, and 5 are described here as new. Previously unknown males and immatures of several species are described. Keys on both generic and specific levels are included. Discussions of distinguishing morphological characters and variability, where pertinent, as well as collection data and discussions of host-parasite relationships are given for each species. Complete illustrations of 7 species are provided.

Particle‐gas dispersion effects in confined coaxial jets

Abstract: The objective of this study was to determine the mixing characteristics of two-phase, confined, coaxial jets. Gas composition, gas velocity, and particle mass flux radial profiles were obtained at different axial stations using 20% by weight of 6 or 30 μm spherical aluminum particles in the primary stream. Additional tests were conducted without particles. Radial profiles for gas composition, velocity, and particle flux were correlated using the principle of similarity. In the gas phase, mass mixed more rapidly than momentum, and the 6 μm particles mixed less rapidly than mass or momentum. Systems with low primary density and low secondary velocity mixed most rapidly. An implicit numerical model was developed to predict the rate of mixing of the gas/particle mixture. The model included coupled dynamic and thermal nonequilibrium effects between the gas and solid phases. Comparisons of model predictions and experimental results were good.

The Collection of Sensitive Information Using a Two-Stage, Randomized Response Model:

Abstract: This article extends the randomized response sampling design to find the intensity of positive action on a sensitive topic among those who have taken a positive action. Sampling properties of the r...

A polyhedron clipping and capping algorithm and a display system for three dimensional finite element models

Abstract: This paper describes an algorithm for clipping and capping polyhedrons and a display system for three-dimensional finite element math models to facilitate viewing internal surfaces in the form of continuous tone computer generated color images. A plane is passed through the model with the result that the elements (or portions thereof) on one side of the plane may be eliminated. A new grid is generated for the cutting plane to include the prediction of such quantities as displacements, stresses, and temperatures. The Cutting plane is colored and/or warped to indicate the variation of selected scalar functions.

Transitional and Turbulent Pipeflow of Pseudoplastic Fluids

Abstract: A modified mixing length model is developed which permits the computation of velocity distributions and frictional pressure losses for transitional and turbulent pipe flow of viscous, inelastic non-Newtonian fluids. The rheological model assumed is the empirical power law. The method represents an improvement over previous workers' results. The data of several authors, most of which could not be harmonized by previous models, are shown to be fully compatible with the present method. The Dodge-Metzner-Reed, "generalized Reynolds number" method of correlation is shown to be inappropriate for transitional and turbulent flow. It is further shown that acceptable models of transitional and turbulent flow must correctly account for Theological behavior of the fluid. The proposed method expressly excludes viscoelastic effects. The method is suitable for engineering pipeline design computations and requires only a knowledge of power-law index n to permit computation of velocity profiles and friction factors.

A list of Venezuela chiggers, particularly of small mammalian hosts (Acarina: Trombiculidae)

Abstract: Detailed or summarized records of 136 species in 38 genera with a key to the latter are provided. Of 86 described forms, 49 are new for Venezuela; the remaining undescribed taxa are coded for purposes of this report. A classified host-parasite list is appended.

Eliminating self-defeating behaviors and change in locus of control.

Abstract: Summary This study investigated changes in locus of control occurring among participants in a workshop designed to eliminate self-defeating behaviors. Experimental (n = 18) and control (n = 18) groups were composed of male and female university students. An analysis of covariance indicated that the treatment group moved significantly more than the control group (p < .001) on the Rotter I-E Scale, and movement was in the anticipated direction, toward greater internal control. The increased internal control was maintained in a follow-up administration of the I-E Scale four months later. It was concluded that the workshop brought relatively stable changes toward greater perceived internal control. Implications were discussed.

Imagery of women in television drama: 1974

Abstract: Taking up a somewhat differing point of view in this dialogue which began on page 259 is Dr. Seggar, a member of the sociology faculty at Brigham Young University in Provo, and a previous Journal contributor.