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Ecology Of Aroga Websteri Clarke In Curlew Valley, Utah-Idaho, Reed L. Kirkland

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ecology, life history, and population dynamics of the sagebrush defoliator, Aroga websteri Clarke, were studied in the field and laboratory. The defoliator has one generation a year at the Curlew Valley site. It overwintered in the egg stage and passed through five larval instars. Ten parasite species attacked the defoliator at the study site. Four species, Orgilus ferus, Phaeogenes sp., Spilochalcis leptis, and Apanteles cacoeciae, contributed over 75 percent of the total incidence of parasitism. Parasitism ranged from 20 to 76 percent in 1971, but only ranged from 6 to 29 percent in 1972. This decrease …

Potentiometric Titration Of Sulfate Using A Lead-Mercury Amalgam Indicator Electrode, Charles W. Robbins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A lead sensitive indicator electrode was constructed with a 70 percent lead and 30 percent mercury amalgam billet. Sulfate concentrations in pure solutions, natural waters, and soil saturation extracts were determined potentiometrically using the lead-mercury amalgam indicator electrode and a standard calomel reference electrode. Sulfate concentrations over the range 0.4 to 20 milliequivalents sulfate per liter were determined with an automatic titrator and compared to a turbidimetric method for accuracy and precision. The values obtained by the two methods from twelve saturation extracts and three subsurface drainage waters were not significantly different and the potentiometric method was generally more precise. …

Factors Affecting Quality And Location Values For Resident Deer Hunting In Utah, Jim C. Wrigley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Application was made of the economic rent method of resource valuation for the resident deer hunt in Utah. Total economic, location and quality rent values were estimated for all hunting units. These values incorporate the relationship existing between the variable use cost and the units of activity associated with the site.

Data were collected by mail survey from hunters following the 1970 season. Approximately 2033 questionnaires were used in the analysis. Additional data were collected from the Utah Division of Natural Resources.

The total rent value estimated from the model was approximately $3,326,238.00. Eighty-five percent of the total was attributed …

Effect Of Bear River Storage On Water Quality In Bear Lake, Utah-Idaho, Robert L. Nunan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Since 1912 concentrations of the major anions and cations (except calcium) in Bear Lake water have shown a steady decrease which has been attributed to a dilution of Bear Lake by Bear River water, Bear Lake having been used as a reservoir for Bear River water since 1918. This study examined the changes which have occurred in Bear Lake water chemistry since 1912 and tested the validity of the dilution theory.

Simple water and salinity budgets were determined for the Bear Lake system and used to simulate the effect of Bear River storage patterns since 1918 on the concentrations of …

Model For Estimating Soil Water Flow, Water Content, Evapotranspiration And Root Extraction, Musa N. Nimah

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A mathematical model was developed to predict water content profiles, evapotranspiration, water flow from or to the water table, root extraction and root water potential at the surface as functions of time under unsteady state conditions.

The model was tested in the field at The Hullinger Farm near Vernal, Utah, in 1970 and 1971. Comparison of water content-depth profiles show excellent agreement at the end of a 9- day run in 1970 on oats seeded to alfalfa. In 1971 with alfalfa as the crop, the data show best agreement, between predicted and computed water content-depth profiles, 48 hours after any …

Effect Of Early Growth Cultivation On Beans And Sweet Corn, Raymond L. Cartee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Investigations involving four cultivation treatments were conducted at the Utah State University Greenville Experimental Farm to determine the effect of these treatments on yields of beans and sweet corn. The effects of the different treatments on soil water content, soil temperature, and weed control in beans and corn were investigated. The effect of cultivation on the degree of root rot infection and the effect of different planting dates were also investigated in the bean study.

The pre-emergence treatment (ridged just before the plants emerge) produced a 48 percent greater bean yield and a 40 percent greater corn yield than the …

Economic Development: Diagnosis Of The High Andean Valleys Of Venezuela (Tuñame And Burbusay), Eloy Davila-Spinetti

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The primary objective of this study was to set development policies applicable for the high Andean valleys of Tuñame and Burbusay (Venezuela); and secondly to develop a quick and inexpensive way to assess development prospects of high Andean valleys similar to the ones studied here.

The methodology employed was to classify various agricultural regions with specific development phases using the Thorbecke's classification and policy scheme. Production functions were estimated, fitted and analyzed to determine the parameters pertinent to such a classification for the two valleys where data was available.

The analyses and classifications permitted a limited enumeration of policies for …

Development Of Environmental Education Field Trip Guides For Elementary School Teachers In Cache Valley, Utah, Sandra T. Brown

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was two-fold. The first was the development of environmental education field trip guides to areas in Cache Valley for teachers in grades three through six that would provide learning activities that cannot be structured in the classroom. Six field trip guides to areas of Cache Valley with accompanying activities and discussion questions were constructed. The guides were tested in the field by three groups of teachers and students and teachers not participating in the field test evaluated the guides for difficulties they would encounter in using the guides.

The second study purpose was to determine …

Plant Adaptation To Cold I. Chlorophyll Ii. Minerals, Peter Rosen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A number of montane herbs in northern Utah typically form flower buds beneath the snow cover and flower either through it or immediately after its recession. Two of these species, one naturally occurring, Claytonia lanceolata, and one cultivated bulb, Galanthus nivalis, were investigated for their response to this stress environment.

Snow depth patterns, chlorophyll content of tissues, and plants grown in light-tight boxes, suggest that light passing through the snow to reach plants growing underneath is not critically involved in the timing of their developmental cycles or in their ability to endure this low temperature environment.

Ability to endure stress …

The Comparative Effects Of Two Reinforcement Schedules Applied To Groups In Teaching Arithmetic Skills, Ronald C. Bennett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A behavioral approach to teaching in the public school system is difficult because of the inherent difficulty of finding positive reinforcers and administering them simultaneously to large groups of students.

This study attempts to apply the same tangible reinforcers to two groups of students under different schedules of reinforcement. The students in the study were in special classes termed "learning adjustment" classes because of their failure to perform at grade level in regular classroom settings.

One group was on a continuous schedule of reinforcement using tokens and gold strike stamps as reinforcers. The second group was also on a continuous …

Sequential Analysis For Tolerances Of Noxious Weed Seeds, Seung Tokko

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The application of a sequential test, the sequential probability ratio test, for the tolerances of noxious weed seeds is studied. It is proved that the sequential test can give a similar power curve to that of the current fixed sample test if the test parameters are properly chosen.

The average sample size required by a sequential test, in general, is smaller than that of the existing test. However, in some cases it requires relatively a larger sample than current test.

As a solution to the problem a method of truncation is considered. A kind of mixed procedure is suggested. This …

Teaching Reference Skills To Secondary Students With Reading Disabilities, Sheila Sunada Newlin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

How can I find a job by looking at a newspaper?

What articles does this magazine contain?

What is an index?

How do I find the meaning of this word?

These are problems which any high school student may encounter. Some students may be able to locate the answers immediately. However, the student with a reading disability may be greatly hampered and frustrated because of his lack of general skills in reading and locating information. This student may have difficulty finding facts from common sources of information both in and out of school.

Inorganic Mercury Uptake And Mercury Tolerance Demonstrated By Several Species Of Algae, Daniel S. Filip

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The inhibition by low concentrations of inorganic mercury has been established for several species of freshwater algae, and a method has been developed to determine mercury levels in algal cells, having good precision at levels as low as one hundred parts per billion.

Rapid sorption of inorganic mercury by glassware was minimized by using heavy algal cultures and short term incubations. The rates and extent of mercury uptake by three species of freshwater green algae were delineated under laboratory conditions. Replicate mercury containing cultures yielded slightly different mercury concentrations upon analysis due to analytical errors and glass sorption. Therefore, percent …

Measurement Of Soil Moisture By Attenuation Of A Vertically Polarized Radio Wave, Arlo D. Mickelsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this thesis is to determine feasibility and to investigate some of the problems encountered in making soil moisture measurements using radio wave propagation. The procedure consists of propagating a vertically polarized wave over the earth and measuring the field strength attenuation. A brief summary of present methods of measuring soil moisture is given.

Certain aspects of radio wave propagation theory are discussed, covering such topics as the surface wave, the space wave, the skin depth, and the effect of the dielectric constant on radio wave propagation. Based on this theory, measurement parameters such as frequency, antenna separation, …

Computer Simulation Of Urban Runoff Characteristics Within Salt Lake County, Robert Newman Parnell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A hybrid computer program is developed to simulate the outflow hydrographs of two urban watersheds located within Salt Lake County, Utah. The gaged outflow of the watersheds provided a checkpoint for comparing the observed and the simulated final outflow hydrographs.

The outflow hydrographs for each subzone of the two watersheds were obtained by abstracting interception, infiltration and depression storage from each subzone hyetograph. The outflow of the subzones were routed to the Jordan River, the final outflow point of the two watersheds. The final hydrographs of the watersheds were combined and compared with the gaged flow.

The uniquenesses of this …

Statistical Analysis For Tolerances Of Noxious Weed Seeds, Yadolah Dodge

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An analysis of the previous method for testing tolerances of noxious weed seeds was performed. Problems of the current techniques were discussed, and the solution to these problems was given.

A new technique of testing through the sequential test ratio was developed, and results examined.

The sequential test was found to be useful enough to include the use of it in determining tolerances for noxious weed seeds.

This study did show that the use of sequential tests does have excellent potential and flexibility as a statistical tool for the tolerances of noxious weed seeds.

Telemetered Heart Rates Of Free-Living Uinta Ground Squirrels In Response To Social Interactions, Robert L. Ruff

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Free-living Uinta ground squirrels (Spermophilus armatus) were instrumented with miniaturized ECG radio-transmitters to measure their short-term and long-term heart rate responses to social interactions. A continuous trapping and direct observation program prior to and during the study provided complete behavioral and life history information for virtually all ground squirrels on the 22-acre study area.

Three broad categories of heart rate information were obtained: responses by squirrels (1) in their burrows, (2) above ground during social interactions, and (3) above ground when animals were not fighting and when conspecifics were both absent and present.

Marked changes in the heart …

Some Aspects Of Muskrat Ecology At Big Island Lake, Alberta, Roger G. Schmitke

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The untimely death brought to a stop the work on his Master of Science degree and a termination of a promising career in the conservation field. Drowned in the line of duty was Roger Schmitke on June 10, 1965, in the Redwater River near Edmonton, Alberta, Canada.

Prior to his death, Roger had worked diligently on his research assignment and had collected all of the data deemed necessary for the completion of the thesis. Partial analysis of the data had been made. The present volume is an attempt to bring together his data and analyses for presentation to his graduate …

Hydraulics Of Waste Stabilization Ponds And Its Influence On Treatment Efficiency, Kenneth A. Mangelson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The treatment efficiency of waste stabilization ponds depends on many factors, the most important of which are generally presumed to be the biological factors such as the type of waste and the organic loading. However, the biological activity in a pond is greatly influenced by the environmental conditions of temperature, wind, sunlight, and the hydraulic flow patterns. In the past little attention has been given to the hydraulic characteristics of waste stabilization ponds. Specifically, little consideration has been given to the gross flow patterns within stabilization ponds as affected by the shape of the pond or lagoon, the presence of …

The Impact Of Selected Changes In Management Of Public Lands On Functional Demand Areas In Utah, Eldon W. Dixon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Income and employment impacts associated with changing federal grazing policy were evaluated within functional demand areas.

Changes in federal land policy do have employment and income effects on the functional demand areas. But whether they are significant or not is open to debate. The percentage of total employment lost for each functional demand area ranged from. 0159 percent for Region 2 to 4. 031 percent for Region 7. This was the maximum employment loss or gain to the demand areas. All other gains and losses in employment within functional demand areas were between this maximum and minimum. Income changes followed …

A Comparison Of Technologist Needs And Training Requirements Of The Major Industries Within The State Of Utah, Gene E. Forsberg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The technologist needs and training requirements were determined from a selected cross-section of Utah industrial firms.

The larger industries were significantly more aware of the training requirements and capabilities of four-year technologists than were the smaller firms.

A significant difference was found regarding general and specialized training required by each firm. Thirteen of the 16 responding firms indicated specialized training as being most important.

The 10 areas of technical training rated most critical in their order of importance were: electronics, technical writing, electricity, English, mathematics (calculus and above), machine shop, manufacturing processes, physics, and metallurgy and design.

There was no …

The Development Of A Value Scale To Assess Familial And Social Values, Donna Marie Cole

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this research was to develop a self-evaluating instrument to assess family and social values . It can be used individually or in small group s of students at the senior high school or Junior college level . The variables rated are: familial, religious, sexual, and social values. The instrument is self-scoring and a schema is provided at the end of the test booklet to ind1cate the pattern of values as they are compared to the median or average scheme for the instrument.

The 36 items in the scale are responded to by a forced choice design of …

Hour Concept Learning In Pre-School Children, Faye Daines Campbell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effects of sex and tutorial instructions were studied as they influence the hour concept development of the pre-school child. The research was conducted at Utah State University Child Development Laboratories with twenty-two, three to five-year-old children enrolled at the time. Each child received three training sessions with the author.

It was found that the twenty-two children who had received individualized instruction on the hour concept showed a significant concept of a clock when the large hand was always constant on the numeral twelve.

The findings indicate that there was no significant difference between boys and girls on their ability …

The Effect Of Alternate Wetting And Drying On The Ammonium And Nitrite Nitrogen Transformation In Soils, Virupax C. Baligar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Investigations were carried out to study the effect of alternate wetting and drying cycles on the mineralization, nitrification, and denitrification of soil nitrogen in two soils, in the presence or absence of added ammonium and nitrite. Soils were analyzed at the end of each drying cycle for total inorganic nitrogen, ammonium, and nitrite nitrogen. Gaseous products, i.e., ammonia, and the oxides of nitrogen (NO and NO₂) were collected in the course of drying for determination.

The drying cycles accelerated the rate of nitrogen mineralization in both soils and further increased the oxidation of applied and available ammonium. The …

Role Of Transition Metals In Nitrite Decomposition In Soil, J. S. Bajwa

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Iron and copper increased the decomposition of nitrite significantly during the first two hours of reaction when 150 parts per million (ppm) of nitrite and nitrogen was added to an acidic soil. Manganese was found to have a slight effect. There was no additional effect of the added metals after two hours reaction time.

The higher concentration of metals was not effective in catalyzing the decomposition of the added nitrite in nitrogen. All the added nitrite nitrogen was not recovered and the deficit could be due to the formation of nitrogen gas.

A Comparative Study Of Boron Adsorption By A Calcareous And An Acid Soil, Namik M. Ali Rashid

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The adsorption of boron by Aiken clay loam and Vernal sandy loam was studied in the boron equilibrium concentration range of 0 to 40 ppm. Adsorption data were obtained at 11, 20 and 30°C. The data were analyzed by the application of the Langmuir adsorption isotherm. It was concluded that, in both soils, the adsorption of boron occurred on three distinct sites or regions.

The acid ferrigenous Aiken soil had a higher adsorption capacity for boron than the calcareous Vernal soil when compared on a unit mass basis. On the unit area basis, however, the Vernal soil adsorbed more boron …

An Evaluation Of The Secondary Teacher Education Program At Utah State University By Selected Graduates, Dallas Lloyd Holmes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Introduction

The present study attempted to identify the strengths and limitations of the Utah State University teacher preparation program, Recommendations of improvements and changes in the program were based on the evaluations of graduates of the teacher preparation program. Information was gathered to determine if any difference in graduate evaluations of the program would be found based on the graduate's sex, age at graduation, community size teaching in, number of years of teaching experience, secondary major area of preparation, and the college graduated from.

Method

A questionnaire was developed to survey the evaluations of the graduates of the teacher preparation …

Calcium Carbonate Dissolution And Precipitation In Water: Factors Affecting The Carbonate Saturometer Method, Lyle M. Dabb

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The carbonate saturometer method developed by Weyl (1961) was studied in respect to the effect of several variables on the solubility of carbonates. The solubility of three solid carbonate materials was measured in four different salt solutions, at four ionic strengths, and at two different temperatures. The solids studied included: calcite, dolomite, and a calcareous soil.

It was found that the three solid carbonate materials varied in solubility from a low in the soil carbonates to a high in dolomite.

Increasing the ionic strength of the solution increased the solubility of most of the solid carbonate materials.

By decreasing the …

Economic Rent Values For Pheasant Hunting In Utah, Braulio Rodriguez V.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A conceptual model relating recreation resource values to the concept of economic rent was developed. The model argues that recreation sites possess both quality and location characteristics which serve as rent producing agents. Sites of better quality extract economic rents relative to those of lesser quality while those located most advantageously to user origins earn location rents relative to those more distantly located. The economic rent values are expressed by the differential use costs and recreationist activity associated with individual site usage.

A methodological procedure was developed which generates estimates of total rent values for a given site. The procedure …

Estimating Agricultural Production Functions From Experimental Data For Different Crops In Relation To Irrigation, Fertilization And Soil Management In Northern Utah, Subramaniuam Swami Nathan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Estimates of agricultural production functions from experimental data for four different crops in relation to six variable inputs are calculated by this study. There are four basic sections in the study. The first section covers the review of production function concepts and the procedures and problems that specifically pertain to this study. Also the importance of joint economic-agronomic research efforts, methodologies and applications of agricultural production functions are cited.

The second section includes the presentation data and postulated functional relationships in estimating production functions. Model building programs are used in developing three dimensional figures, which aid in the selection of …