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Visual Assessment Of Rivers And Marshes: An Examination Of The Relationship Of Visual Units, Perceptual Variables And Preference, John C. Ellsworth

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this research was to examine the relationship of two approaches to visual assessment of landscape--the qualitative descriptive inventory and the theoretically-based empirical perceptual preference approach. Three levels of landscape visual units based on bio-physical similarities (landscape units, setting units, and waterscape units) were identified in a marsh (CUtler Reservoir, Cache County , Utah), and its tributary streams. Color slide photographs were taken from five of the visual units. These slides were rated on a 5- point scale by panels of judges for the expression of four perceptual variables--coherence, complexity, mystery, and legibility. The same slides were rated …

Use And Evaluation Of The Nutrient Density Concept For Assessing The Impact Of Socioeconomic Factors On Nutritional Quality Of Diets, Carol Thompson Windham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Data from 7285 individual participants in the USDA Spring Nationwide Food Consumption Survey were analyzed using the nutrient density concept and multiple regression procedures to evaluate the impact of socioeconomic status on the nutritional quality of foods consumed. For each socioeconomic group the average daily amount of nutrients consumed per 1000 kcal of food consumed were computed and compared with the Recommended Dietary Allowances which had been converted to single-value nutrient allowances per 1000 kcal. This nutrient density approach identified qualitative patterns of food consumption for selected income, region, urbanization, household size, race, employment and education groups as well as …

Associative Growth Of Paired Lactic Streptococci In Ph Controlled Whey-Based Media, Carol Lee Hansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study evaluated four lactic streptococcal pairs which had been used routinely in cheese plants to determine (1) if strain growth interactions would produce stimulated growth and acid production; (2) final percent strain ratios and generation times after 1/1 initial inocula volumes and (3) whether final strain ratios could be controlled through adjustment of initial inocula volumes. Strains were propagated in fortified and unmodified whey substrate under pH control at 27C for 12 hours. Cell number and acid activity were evaluated on single and paired strains. Phage typing was used to determine generation times and the percent of each strain …

The Derivation And Validation Of A Workable Food Listing System For Use In Evaluation Of Food Consumption, Georgia C. Lauritzen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Three separate food grouping systems were derived for diet evaluation by utilizing a computer clustering program. System 1 was based on grouping of foods according to nutrient quality and quantity, system 2 was based on nutrient quality and frequency of consumption and system 3 was based on nutrient quality and kilocalories consumed. Defendable nutritional principles as well as knowledge of present nutritional concerns and eating habits of the U.S. population underpinned the derivation of the three systems. Over 4,000 individual foods were condensed to approximately 325 groups.

The three food grouping systems which were developed were compared for accuracy by …

Chemical Changes In Groundwater Of Northern Utah Valley, Utah, Paul E. Fairbanks

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Northern Utah Valley is one of the fastest growing areas of Utah and has increasing needs for domestic, industrial, and agricultural water. To meet these needs, groundwater and surface water systems must be understood to maximize their use. Chemical studies of the sediment mineralogy and related water-chemistry give insight to the movement of the water.

There are three major aquifers present in the valley: shallow Pleistocene; deep Pleistocene; and Tertiary. They are composed of sands and gravels and are separated by confining layers (aquitards) composed mostly of clay. Along the flanks of the bordering mountains there are undifferentiated aquifers which …

Human-Bear Interactions In The Backcountry Of Yosemite National Park, Bruce Charles Hastings

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this study was to quantitatively document interactions between black bears and backcountry visitors, and to identify the factors affecting those encounters. Fine hundred and ninety-two interactions were observed. The most common responses of visitors to bears were to watch, walk toward, and talk to others and/or point at the bear. Bears responded to humans largely by walking away, watching, traveling around, walking toward, and running away from people.

Each behavior for both species was categorized into one of four response classes: (1) fear/avoidance, (2) neutrality, (3) approach, or (4) aggression. Over 65 percent of visitor responses were …

The Pathogenicity Of Blue-Stain Fungi On Lodgepole Pines Attacked By Mountain Pine Beetle, Richard Grant Ballard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the western regions of North America, mountain pine beetle, Dendroctonus ponderosae Hopk., infestations take a tremendous toll of pines , especially lodgepole pine, Pinus contorta Dougl. var. latifolia Engelm.. Mass attack by the beetles is a devastating event for the trees. As well as girdling the tree, a massive inoculation of blue stain fungus "complex" (composed of several species of Ceratocystis, numerous yeasts and other mycelial fungi) is made beneath the bark. These fungi colonize and destroy the parenchyma tissue system of the host sapwood, primarily the ray parenchyma and resin duct epithelium.

A blue stain is produced …

The Visual Decision Making Process As A Technique For Redistributing Outdoor Recreation Use, Martha Gail Hahn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The demand for recreation on public lands has been growing steadily, resulting in undesirable impacts on certain resources as well as recreation experiences. The problem addressed by this research is the uneven distribution of recreational use that causes a concentration of impacts. This thesis describes the development and testing of a method to reduce the uneven/concentrated recreation use occurring on the public lands.

The basic objectives of the study were to determine the effectiveness of redistributing recreationists by the use of photographs and a decisional process using photographic information and to identify its potential as a tool in meeting management …

An Evaluation Of Deschampsia Caespitosa (L.) Beauv Populations For Metal Tolerances And Ecotypic Variation At Climax, Colorado, Paul Ellsworth Pratt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Four populations of Deschampsia caespitosa (L.) Beauv (a Poaceae species), growing on disturbed and undisturbed sites at Climax, Colorado, were examined for metal tolerances (Zn, Cu, Pb, Al). Root growth assessments on parent plant and offspring material for each population were conducted using nutrient solutions containing elevated levels of Zn, Cu, Pb, or Al. Seed germination and seedling survival tests for each population were conducted on both alpine topsoil and mine spoil material.

Evidence is presented that supports the hypothesis that ecotypic variation exists within Deschampsia caespitosa and that this variation has allowed certain Deschampsia populations to become successfully established …

Structure And Petrography Of The Tertiary Volcanic Rocks Between Death Creek And Dairy Valley Creek (Box Elder Co.), Utah, E. Matthew Hare

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Several volcanic flows lie between Death Creek and Dairy Valley Creek, near Etna, Utah. The major, central portion of the volcanic flows is composed of dacite and dacite vitrophyre. An elongate ridge in the southeastern corner of the study area and several small outcrops in Death Creek Valley are composed of rhyolite and rhyolite vitrophyre. Additional rock types include conglomerate, volcanic ash, and tuffaceous sedimentary rock of the Tertiary Salt Lake Formation, Paleozoic limestone, and Tertiary basalt.

Dacite and dacite vitrophyre samples are porphyritic, containing phenocrysts of plagioclase, quartz, biotite, amphibole, orthopyroxene, and iron-titanium oxides. Rhyolite and rhyolite vitrophyre samples …

The Use Of Sensory Predicates To Predict Responses To Sensory Suggestions, James M. Talone

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A scale consisting of eight suggestions worded with specific sensory predicates was administered to a large undergraduate introductory psychology class. Following the presentation of the suggestions, Self-Scoring Forms were filled out to assess the subjects' response to auditory (A), visual (V), and kinesthetic (K) suggestions. Prior to the conclusion of the session, subjects were asked to write a brief essay describing their experience of the suggestion portion of the session. Subject essays were content analyzed for the use of predicates (including, but not only A, V, and K). Frequency of usage of A, V, and K predicates were compared with …

A Mass Media Campaign To Promote Divorce Adjustment, James C. Gardiner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Introduction. This study produced and evaluated a mass media campaign designed to promote emotional adjustment to divorce.

Hypotheses. (a) Sending a promotional newsletter to divorced persons will increase their reported utilization of the campaign. (b) Divorced persons who report heavy utilization of the campaign will report greater emotional improvement than divorced persons who report light or no utilization of the campaign.

Method. A field experiment was conducted in rural northern Utah. The names of all recently (less than 12 months) divorced persons were obtained from the county clerk and randomly divided into an experimental group, who received a newsletter promoting …

Nutrient Requirements Of Ruminants In Developing Countries, Leonard C. Kearl

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This book was assembled using the latest information for compiling the nutrient requirements of sheep, goats, cattle and water buffalo. Because of the complexity of the interactions between an animal, its diet, its physiological state, and the environment; the values depicting the nutrient requirements are estimates and not absolutes. These values, however, are considered to be adequate to meet the minimum requirements of healthy animals maintained in a thermoneutral environment.

The mean energy and protein values used in the nutrient tables were arrived at from combining values found in the literature and those provided in personal communication with animal nutritionists …

The Interactive Effects Of Water Salinity And Management On Symbiotic Nitrogen Fixation In Alfalfa, Thomas J. Keck

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A greenhouse study was conducted to assess the interactive effects of three irrigation water salinity levels (1.0, 3.0, and 9.0 mmho/cm) and three quantities of water app lied per irrigation (120, 240, 360 ml) on plant growth and nitrogen fixation by alfalfa (Medicago sativa L. cv. Resistador). Harvest dates corresponded to 10, 30, and 50 days after the initiation of salt and water treatments which were started after nodulation had been established in young plants.

Alfalfa top growth was limited by both salt and water stresses. Irrigation water salinity had a greater effect on top growth than root growth …

A Revision Of The North American Species In The Genus Euodynerus (Hymenoptera: Eumenidae), Ali Shallan Moalif

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Twenty-eight species of Euodynerus Dalla Torre are recognized from the Nearctic Region, of which one is Holarctic. Literature on the biology of fourteen species is reviewed and new biological information discussed for four species. The phylogenetic relationships of the genus Euodynerus to other genera and the classification and relationships of the species of Euodynerus are discussed. Seven subgenera are recognized of which four are new: Euodynerus, Pareuodynerus Bluethgen, Leucodynerus Bohart, Annodynerus new subgenus, Gonodynerus n. subgenus, Holodynerus n. subgenus and Plecodynerus n. subgenus. Their comparative morphology, phylogeny, and distrubution are discussed. Larval instars of E. hidalgo (Saussure), E. scutellaris …

Population Characteristics And Movement Patterns Of Cougars In Southern Utah, Thomas P. Hemker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Movements of 22 cougars (Felis concolor) were monitored by radio-telemetry between January 1979 and July 1981 in southern Utah. The population, composed of resident, transient, and juvenile cougars, remained relatively constant in size for 3 years. Densities (0.4-0.5 cougars/100 km²) were considerably lower than has been reported elsewhere. Average annual home area size of resident females (685 km²) and a single resident male (826 km²) were substantially larger than other home area sizes reported. Home areas of resident females overlapped and resident male home areas may have overlapped as well. Despite the …

Kindergarten Teachers' Conceptions Of Reading, Kelly Duane Tolman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study attempted to identify the reading conceptions of a sample of kindergarten teachers in the state of Utah in terms of five basic approaches to beginning reading. The subjects responded to a survey instrument that included 45 statements about various beginning reading methodologies.

The descriptive data generated from the study indicates that no significant differences exist among the teachers' preferences for any of the five conceptions of reading. The data also indicates that no significant differences exist between teacher preferences for "content-centered" conceptions of reading and "pupil-centered" conceptions of reading.

This apparent lack of a preference for the "pupil-centered" …

An Anatomical Investigation Of Roots From C3 And C4 Grasses With Emphasis On Phloem Organization, Eric A. Rechel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Root phloem structure was researched in taxonomically related C3 and C4 grass species. The functional aspect of phloem unloading in the root was then discussed in terms of this observed structure. In Triticum aestivum L. (C3) each phloem bundle consists of one protophloem sieve-tube element, two companion cells, and one metaphloem sieve-tube element. Protophloem sieve-tube elements and companion cells are contiguous with the pericycle. Centripetally the companion cells are in contact with the metaphloem sieve-tube element. All are separated from tracheary elements by stelar parenchyma. Eighty-four percent of the lateral connections observed in protophoem sieve-tube elements are associated with the …

Western White Pine: The Effect Of Clone And Cone Color On Attacks By The Mountain Pine Cone Beetle, Michael J. Jenkins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The relationship between clone and cone color in western white pine, Pinus monticola Douglas, to attack by the mountain pine cone beetle, Conophthorus monticolae Hopkins, was studied in the Sandpoint Seed Orchard, Idaho. A positive relationship was shown to exist during a 5 year field evaluation. Cone beetles were found to prefer dark colored cones and to attack certain clones at a higher rate than others.

Laboratory dissections did not indicate that cone color affected oviposition, brood development or brood mortality.

Olfactometer experiments demonstrated that olfactory stimuli are involved in the cone beetle attack sequence. Visual cues relating to cone …

The Relative Importance Of Fathers' Participation In Family Therapy, Alice Ann Smith Aldous

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The purpose of this paper is to survey research and literature on family therapy to assess what is known currently about contributions of fathers in family counseling. At the same time, theory about fathers' participation in family therapy and his expected contributions to it are summarized here. Because a certain amount of theorizing and speculation are involved, the major question of this paper will be narrowed to avoid moving too far from the known. The main question will be the importance of the father's participation relative to his nonparticipation. Questions of the significance of the father's involvement relative to his …

Images And Sequences: A Demonstration Project On The Use Of Photography As A Tool For Academic Motivation In Logan Junior High School, H. Gordon Hilden

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This is a report of an after-school, non-credit, photo-enrichment course that was developed and offered to students at the Logan Junior High School during the period March 30 through May 6, 1981.

The artistic intent of this course was to teach students how to see with a camera, recording images on transparency film, and later arranging transparencies into idea-development or story-telling sequences.

The educational intent was to see if such a course would motivate students to perform better in other classes and improve their school relationships in general.

The course was of too short a duration to develop any hard …

Scanning Electron Microscopic (Sem) Studies On Range Grasses And Their Resistance To Black Grass Bugs, Yun-Hwa Ling

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Large populations of black grass bugs, Labops hesperius Uhler, have been observed on extensive acreages of range lands. These bugs cause severe damage to the range grasses, lowering their palatability and productivity. This study was to determine whether morphological differences among breeding lines of grass species or interspecific hybrids could be correlated with the feeding behavior of black grass bugs. If so, plant breeders should be able to develop resistant cultivars. To explore this possibility, cultivars and synthetics of range grasses, representing the genera, Agropyron, Dactylis, Phalaris and Poa, were exposed to different instar stages (II and …

A Study Of Cell Dimensions, Amyloplast Position And Certain Physiological Responses During Gravitropic Bending Of Dicot Stems, Julianne E. Sliwinski

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

If a plant is positioned horizontally, the elongating region responds by bending upward within 10 to 12 h until it is vertical, forming a 90 bend with the stem below. If a Xanthium strumarium L. (cocklebur) plant is placed horizontally, but restricted to that position for 48 h and then released, the bend to the vertical usually takes place within 10 s, suggesting that bending energy is stored in restricted stems. Some plants that do not bend completely to 90° within 10 s do so within 5 min, and other plants can overshoot the 90 mark by as much …

Seed Case Studies On Atriplex Gardneri (Moq) Dietr.: Bracteole Cell Wall Composition And Enzymatic Degradation, Priscilla Woolley Burton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Clarification of the bracteole restraint on germination and the development of an improved seed pre-treatment were the objectives of this study. Bracteole cell walls were isolated and hydrolyzed with 72% sulfuric acid followed by dilution and further hydrolysis. Individual monosaccharide yields were monitored with gas chromaixtography and colorimetry. Lignin was determined as the acid insoluble residue . Cell wall composition on a dry weight basis was 17.0% lignin, 32 . 75% glucose, 28.77% xylose, 7.21% arabinose, 1.11% galactose and 0.35% mannose. Linear xylans and glucans represent a large portion of the cell wall . The quantity of lignified tissue is …

Utah Science Vol. 43 No. 1, Spring 1982

Utah Science

1 GRAZING FEES FOR PUBLIC LANDS: WHAT'S FAIR? D. B. Nielsen Formulas and fees help set the price of beef. They also are factors in rancher survival rates. Learn how the process works in this article.

7 BUR BUTTERCUP: A WEEDY IMMIGRANT M. E. Barkworth Whys and hows of plant transfers between regions and countries are solved by special detective work. A USU scientist wants to help in keeping track of Bur Buttercup migrations.

10 BUR BUTTERCUP: IT WILL GET YOUR SHEEP IF YOU DON'T WATCH OUT J. D. Olsen, T. E. Anderson, and G. Madsen Although not a true …

Fifth Biennial Cheese Industry Conference, Various Authors

Cheese Industry Conference

No abstract provided.

Proceedings From The 19th Annual Marschall Invitational Italian Cheese Seminar 1982, Various Authors

Cheese Industry Conference

No abstract provided.

Ionospheric Hot Spot At High Latitudes, Robert W. Schunk, Jan Josef Sojka

All Physics Faculty Publications

A hot spot (or spots) can occur in the high‐latitude ionsophere depending on the plasma convection pattern. The hot spot corresponds to a small magnetic local time‐magnetic latitude region of elevated ion temperatures located near the dusk and/or dawn meridians. For asymmetric convection electric field patterns, with enhanced flow in either the dusk or dawn sector of the polar cap, a single hot spot should occur in association with the strong convection cell. However, on geomagnetically disturbed days, two strong convection cells can occur, and hence, two hot spots should exist. The hot spot should be detectable when the electric …

Scanning Electron Microscopy Of The Pericarp And Testa Of Several Sorghum Varieties, C. F. Earp, L. W. Rooney

Food Structure

Pericarp thickness (determined by Z gene) varies greatly among sorghum varieties ranging· from very thin (8 ~ m) to very thick (160 ~m ) . Pericarp thickness also varies within an individuual kernel. The areas below the style and near the hilum are the thickest with the sides of the kernel being thinnest . Scanning electron microscopy was used to document differences in pericarp thickness and to explain milling differences . Varieties with a thick pericarp had starch granules in the mesocarp cell layers. Sorghums with a thin pericarp did not have starch granules in the mesocarp except near the …

General Catalog 1982-1984, Utah State University

University Catalogs

General Catalog of 1982-1984

Contains course descriptions, University college calendar, and college administration.