Physical Sciences and Mathematics Commons^™

Distribution Of Stream Pollution In Lake Water, Richard W. Tew, Samuel S. Egdorf, James E. Deacon

Publications (WR)

Wastewater effluent-laden waters from Las Vegas Wash (LVW) form a density current that may be detected in Boulder Basin of Lake Mead at considerable distances from the wash estuary. This led to the suspicion that water from the inflowing stream [40 mgd (1.5 X 10⁵ cu m/day)] might not be rapidly diluted in the enormous volume of the lake [19 mil acre-ft (2.3 X 10¹⁰ cu m)], but might persist as a recognizable entity to the vicinity of the intake of a major water source for populous Clark County, Nev.

Because of the detection sensitivity implicit in the …

A Hierarchical Access Model For Data Base Organizations, S. B. Yao

Department of Computer Science Technical Reports

No abstract provided.

The Quick Instructional System, Sharon Fletcher

Department of Computer Science Technical Reports

No abstract provided.

Levels Of Abstraction For Determining Data Requirements, Thomas I. M. Ho

Department of Computer Science Technical Reports

No abstract provided.

Experiments With Computer Aided Self-Paced Instruction For Mathematical Programming Education, Thomas Ho, A. Ravindran, Arthur Sinensky

Department of Computer Science Technical Reports

No abstract provided.

Conservation Of Natural Resources--Ecology, Economics And Energy, Harold W. Young

West Virginia Law Review

No abstract provided.

Adaptive Quadrature Algorithms For Illiac Iv., James M. Lemme

Department of Computer Science Technical Reports

No abstract provided.

Irrigation Scheduling Program For Sugarcane, Terence L. Pearse

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An estimate of potential evapotranspiration is acquired to implement an irrigation scheduling program. Four equations, which estimate potential evapotranspiration (evaporation) were evaluated for prediction of Class "A" Pan evaporation. The equations used were Penman's combination equation, the Jensen-Haise temperature and radiation equation, and two of the Christiansen-Hargreaves polynomial regression type equations. Measured and calculated radiation was used together with two values of albedo. Four years of daily climate data from Rhodesia was evaluated by general linear regression methods.

Despite the significant variations between the four annual regression lines of each equation, the use of confidence intervals indicate that the Penman …

Positive Controllability Of Systems With Nearly-Non-Negative Matrices, Theodore Sonne Perry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This paper analyzes the controllability of constant coefficient linear differential equations and presents two proofs of a major theorem on controllability. Properties of nearly-non-negative matrices are discussed and in particular a theorem on the behavior of the exponential matrix of nearly-non-negative matrices is proven. These results are then used to prove that the reachable set for systems with nearly-non-negative matrices is limited to the positive hyperoctant.

Interpretation And Application Of Elements Of Differential Geometry And Lie Theory, James R. Brannan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Basic concepts of differential geometry and Lie theory are introduced. Lie transformation groups are applied to linear systems of differential equations and the problem of describing rigid body orientation. Linear Hamiltonian systems are then treated as a Lie system of differential equations. This theory is applied to a particular Hamiltonian system arising from a problem in control theory, the linear state regulator problem.

Shooting Method For Two-Point Boundary Value Problems, John D. Baumann

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to develop the shooting method as a technique for approximating the solution to the two-point boundary value problem on the interval [a,b] with the even order differential equation {i.e. n is even)

u⁽ⁿ⁾(t) + f(t, u(t), u⁽ⁱ⁾(t, ),..., u^(n-1)(t)) = 0

and boundary conditions

u(a) = A

u(b) = B

and with at most n-2 other boundary conditions specified at either a or b. The basic proceedure will be illustrated by the following example.

Consider the two-point boundary value problem (0.1) (0.2) (0.3) with the additional boundary conditions …

Feeding Behavior Of Pen Reared Mule Deer Under Winter Range Conditions, Michael A. Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined the feeding responses of mule deer to a system of spring livestock grazing. The specific purposes were 1) to determine botanical composition of diets selected by mule deer on a winter range subjected to previous spring grazing by sheep compared to one with no sheep grazing and 2) to develop a basis for predicting selection of individual plants by deer, based on physical characteristics of the plants and the species and physical proximity of associated plants.

The study was conducted within the framework of a completely randomized experimental design with two treatments. Variables controlled for each unit …

Some Aspects Of The Salinity Of Mancos Shale And Mancos Derived Soils, James C. Whitmore

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Initial studies to determine the thermodynamic solubility product (K_sp) of gypsum and CaCO₃ were conducted. The influence of different electrolyte salts at different concentrations upon the solubility of gypsum and CaCO₃ was then tested. Analytical data was utilized in conjunction with a computer to calculate the activity of CaCO₃ and gypsum, the ion pair concentration and the solubility product. Indifferent salts increased the solubility of gypsum and CaCO₃, and salts with a common ion decreased the solubility of gypsum and CaCO₃.

Lithium was found to be the dominant monovalent cation present …

The Accuracy Of Soil Mapping Units Of Certain Pachic And Cumulic Soils In Northern Utah, Behjat Badamchian

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to determine the accuracy of mapping of pachic and cumulic soils in Cache County. The soil maps that were used for this study as the basemap were the Atlas sheets of the published soil survey of Cache County.

Five map units from Mendou, Nebeker, Avon, Hendricks and Winn which include almost 52 percent of the pachic and cumulic soils in the survey area were selected for this study. These five soils cover large areas when compared to other soil series and they are distributed throughout the county. All these map units were recognized as …

Modeling Spring Wheat Production As Influenced By Climate And Irrigation, V. Philip Rasmussen Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A model has been developed that predicts spring wheat grain and dry matter yield. Preliminary tests show very favorable results when predicting grain yield in two different climatic regimes, one being a dryland and another being an irrigated area. The strengths of the model lie in its simplicity, relatively available input data, and low computer processing time cost. Weakness of the model stem from the assumptions that allow its simplicity. The basic assumption in the model is that grain and dry matter yield can be related to the ratio of actual to potential transpiration, computed for each of five phenological …

Dikes Of The Clear Creek Area, Wasatch Plateau, Utah, William Dennis Thomas

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The area, covered by this report, includes about 108 square miles in the northeastern part of the Wasatch Plateau in central Utah. Clear Creek, Utah, is near the center of the area.

Stratigraphy of the area is characterized by 18,000 to 20,000 feet of sedimentary rocks above the Precambrian basement. The oldest exposed stratigraphic unit is the 11ancos Formation of late Cretaceous age; the youngest exposed stratigraphic unit is the North Horn Formation of Cretaceous-Tertiary age. The sedimentary rocks are mainly sandstone, shale, and coal. Sandstone and shale are the most abundant.

Structure of the area is characterized by folds …

Forage Selection And Nutrition Of Sheep And Goats Grazing In The Tunisian Pre-Sahara, Rudolfo Ricardo Griego

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nomadic pastoralism has been the traditional method of utilizing grazing resources in arid and semi-arid regions of Africa. However, increased sedentarization accompanied by growing human and animal populations during the past two decades is thought to be accelerating the desertification process, or desert expansion. The specific interactions of the grazing animal with this process has been speculated upon but not studied in detail. A comparative study was initiated during the spring grazing season of 1974 to determine sheep and goat nutritional and production responses, as well as patterns of vegetative selection and utilization under the pastoral system currently employed in …

The Geology Of The Caballo Peak Quadrangle, Sierra County, New Mexico, James Trimble Mason

Earth and Planetary Sciences ETDs

The Caballo uplift, along the east side of the southern end of the Rio Grande depression, is comprised of rocks which range in age from Precambrian to Recent. The northern Caballo Mountains do not contain rocks of Silurian, Devonian, Mississippian, Triassic, Jurassic, or Lower Cretaceous ages. The Precambrian rocks consist mainly of granite which encloses small rounded bodies (possibly roof pendants) of biotite-hornblende gneiss and schist, granitic gneiss, and metasediments. The Lower Paleozoic is comprised of the Cambro-Ordovician Bliss Formation, the Ordovician El Paso Group, and the Ordovician Montoya Group. These marine sediments are overlain unconformably by the Pennsylvanian Magdalena …

Debye–Hückel Theory For Rigid‐Dipole Fluids, John D. Ramshaw

Physics Faculty Publications and Presentations

The dipolar analog of classical linearized Debye–Hückel theory is formulated for a finite fluid system of arbitrary shape composed of rigid polar molecules. In contrast to the ionic case, the dipolar Debye–Hückel (DDH) theory is nonunique due to an inherent arbitrariness in the choice of a local field E*. This nonuniqueness is expressed in terms of a parameter ϑ related to the ellipticity of the spheroidal cavity used to define E*. The theory then leads to an expression for the direct correlation function c (ϑ) as a function of ϑ. Only the short‐range part of c (ϑ) depends upon ϑ; …

A Computerized Marine Data And Information System-Endex/Oasis, Steven J. Tibbitt

Marine Affairs Theses and Major Papers

The volume of international and national environmental data and information in the marine, earth and atmospheric sciences has created the need to systematically organize, handle, manipulate, store and retrieve this material utilizing sophisticated computer hardware and provide the scientist, student, planner and decision-maker with the awareness and accessibility of available data and information. Consonant with the objectives outlined for NOAA and the need generated by the explosion of information and data in this area, the National Oceanic and Atmospheric Administration(NOAA), Environmental Data Service (EDS) and the National Oceanographic Data Center (NODC), have an ongoing development effort in the Envirorrmental Data …

The Value Of The Intergovernmental Oceanographic Commission To Developing Nations, Georgia Cranmore

Marine Affairs Theses and Major Papers

The purpose of this report is to investigate the structure and functions of the IOC in order to determine its statutory authority to serve developing nations; to evaluate its current and potential activities in terms of the specific requirements of less scientifically developed countries; and to suggest changes in operation and attitude needed to advance the IOC's stated purpose; the international promotion of marine science.

The Geology Of The San Antonio Mountain Area, Tres Piedras, Taos And Rio Arriba Counties, New Mexico, Dean Eppler

Earth and Planetary Sciences ETDs

The San Antonio Mountain area is late Tertiary to early Quaternary volcanic terrane on the western edge of the San Luis Basin in the Rio Grande depression.

Calc-alkalic rocks are interlayered with flows of the Servilletta Basalt (Butler, 1946) and consist of a series of early basaltic rocks (Wissmath Craters basalt, basaltic andesites of Los Cerritos de la Cruz, Red Hill, Malette Creek), intermediate age basaltic andesite, andesite and latite of the San Antonio Mountain Volcanic Complex and late basalt of the Piñabetoso Peaks.

Data suggests that the volcanic rocks of the San Antonio Mountain area evolved from two magmas. …

Quaternary Geomorphic Features Of The Bear River Range, North-Central Utah, Jerome Vernon Degraff

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Bear River Range, in north-central Utah, contains a variety of geomorphic elements influenced by the geologic setting and events. Controlling factors of the geologic setting include: (1) a syncline (west) and an anticline with a crestal graben (east) within the part of the mountain range studied, and an adjacent graben valley along the west side of the range; and (2) bedrock of Precambrian and Paleozoic age in the core of the range, predominantly of shallow-marine carbonates and covered in the graben by shaly and conglomeratic rocks of early Cenozoic age, with fanglomerates and lake deposits of later Cenozoic age. …

Nitrogen Fertilization Studies In Dryland Winter Wheat And Potential Nitrogen Losses From The Soil At The Blue Creek Experimental Station In Northern Utah, Subhawat Intalap

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study compared the effects of nitrogen sources on the available inorganic soil nitrogen, nitrogen movement, nitrogen losses, and wheat yields when nitrogen fertilizers were applied to soil planted to dryland winter wheat at the Blue Creek Experimental Station in northern Utah.

In the fall 1973 soil samplings, the fertilizers producing the largest mineral nitrogen contents in the 0-30 cm soil depths were ammonium nitrate >ammonium sulfate > S-coated urea, when they were broadcast at the practical rate of 56 kg N/ha. There was no increase in the mineral nitrogen at the dee per depths in the fall or at any …

Structural Geology Of Cutler Dam Quadrangle And Northern Part Of Honeyville Quadrangle, Utah, Douglas A. Sprinkel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The mapped area is located in the north-central part of Utah. The northern part of the mapped area is located in the Basin and Range province and the southern part of the mapped area is located in the Middle Rocky Mountain province. The north-south and east-west dimensions of the mapped area are 11.1 miles and 5.1 miles, respectively.

Paleozoic rocks are exposed in Bear River Narrows, in Cache Butte Divide, and in the Wellsville Mountains. Paleozoic strata, in Bear River Narrows, dip west. The Ordovician Swan Peak Formation crops out in the eastern part of Bear River Narrows. It is …

Population Dynamics And Harvest Of Canada Geese In Utah, John Tautin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A twenty-one year (1952-72) accumulation of banding data for Canada geese in Utah was studied to determine the distribution and chronology of the harvest of the geese and the effects that hunting regulations have had upon harvests and population parameters. The banding data were also used in an attempt to develop a population model capable of predicting population trends and desirable survival rates.

Within Utah, the bulk of the annual harvest (78 percent) takes place in the northern portion of the State in the vicinity of the Great Salt Lake marshes. In Northern Utah the harvest peaks on the opening …

A Model For Designing Surface Drainage Systems In Nearly Level Agricultural Lands, Rafael Maria Rojas

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The increasing demand for reclamation of periodically waterlogged nearly level agricultural lands in humid tropical areas and the hazard of soil deterioration and soil moisture balance disturbances by current land forming methods suggests the need for investigations of new surface drainage design procedures. This report presents a rainfall-runoff model for simulating hydrographs from ungaged agricultural plots. The model is based on routing procedures and utilizes common soil and hydrologic data. Tests made with several small agricultural water-sheds indicate that the model could be a useful tool in simulating surface drainage design.

Input data for the model consists of (a) rainfall …

Distribution Of Carbonate In Surface Sediments Of The Pacific Ocean, W. H. Berger, Charles Adelseck, Larry A. Mayer

Affiliate Scholarship

The distribution of carbonate on the floor of the Pacific has been remapped on the basis of 1313 points from 80 references stored in the World Ocean Sediment Data Bank of Scripps Institution of Oceanography. Percent distribution maps and carbonate versus depth diagrams generally agree with previously published information and reflect the major controlling factors of carbonate sedimentation (depth, hydrography, fertility, and sedimentary processes). While carbonate distributions are of limited use in attempting to construct dissolution profiles, major trends are identifiable. In particular, the degree of lowering of the equatorial calcite compensation depth (CCD) together with an estimate of the …

Multiple Rainbows From Single Drops Of Water And Other Liquids, Jearl D. Walker

Physics Faculty Publications

The scattering of light by spherical drops and the theory of rainbows are reviewed in detail to predict the angular positions of rainbows from single drops. The angular positions of the first 13 rainbows of water, observed from a drop suspended in a student spectrometer, were compared to these theoretical positions. Since the rainbows were dependent on the refractive index, the positions shifted with drops of other fluids having other refractive indices. Light corn syrup yielded 11 rainbows, including the 17th-order one. The light emerging from the drops was white except for the multicolors of the rainbows and the faint …

Photoinization Cross Sections For Atomic Chlorine Using An Open-Shell Random-Phase Approximation, Anthony F. Starace, Lloyd Armstrong Jr.

Anthony F. Starace Publications

The use of the random-phase approximation with exchange (RPAE) for calculating partial and total photoionization cross sections and photoelectron angular distributions for open-shell atoms is examined for atomic chlorine. Whereas the RPAE corrections in argon (Z=18) are large, we find those in chlorine (Z=17) to be much smaller due to geometric factors. Hartree-Fock calculations with and without core relaxation are also presented. Sizable deviations from the close-coupling results of Conneely are found.