Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (1435)
- Earth Sciences (454)
- Life Sciences (446)
- Engineering (444)
- Social and Behavioral Sciences (324)
-
- Environmental Sciences (307)
- Geology (276)
- Education (261)
- Computer Sciences (184)
- Mathematics (166)
- Soil Science (148)
- Ecology and Evolutionary Biology (142)
- Civil and Environmental Engineering (138)
- Psychology (131)
- Chemistry (127)
- Statistics and Probability (123)
- Physics (117)
- Animal Sciences (101)
- Electrical and Computer Engineering (100)
- Plant Sciences (96)
- Mechanical Engineering (90)
- Economics (84)
- Agriculture (61)
- Applied Statistics (46)
- Biology (42)
- Water Resource Management (40)
- Aerospace Engineering (38)
- Teacher Education and Professional Development (37)
- Forest Sciences (34)
- Oceanography and Atmospheric Sciences and Meteorology (33)
- Keyword
-
- Utah (162)
- Soil (41)
- Geology (35)
- Idaho (34)
- Education (30)
-
- Water (30)
- Mathematics (26)
- Model (23)
- Petrology (23)
- Development (20)
- Modeling (19)
- Temperature (19)
- Geomorphology (18)
- Stratigraphy (18)
- Behavior (17)
- Evaluation (17)
- Optimization (17)
- Soils (17)
- Students (17)
- Analysis (16)
- Effect (16)
- Management (16)
- Agriculture (15)
- Climate change (15)
- Estimation (15)
- Irrigation (15)
- Study (15)
- Children (14)
- Nitrogen (14)
- Alfalfa (13)
Articles 2611 - 2640 of 2669
Full-Text Articles in Entire DC Network
A Determination Of Variability Of Teaching Assignments In The Secondary Schools Of Utah Together With Implications For Teacher Education Curricula, June Butler Willhite
A Determination Of Variability Of Teaching Assignments In The Secondary Schools Of Utah Together With Implications For Teacher Education Curricula, June Butler Willhite
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
It is usually recognized that, in the broad sense, our public schools are maintained for the instruction of children and youth. Moreover, there appear to be three important factors which bear directly upon the nature of this instruction: (1) the individuals who enter the teaching profession, the kinds of people they are, their physical, emotional and mental characteristics or capacities; (2) the kind of education these potential educators receive in preparation for their professional work; and, (3) the actual teaching assignment the individual receives in the particular school where he is employed. Commonly, these three matters are referred to as …
The Effect Of The Bicarbonate Ion On The Respiration Of Excised Roots, Gene W. Miller
The Effect Of The Bicarbonate Ion On The Respiration Of Excised Roots, Gene W. Miller
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
For many years man has been searching for a cure for lime-induced chlorosis. This disease is prevalent throughout the entire western United States and is characterized by a yellowing of the leaves, destruction of the chlorophyll, and eventual death of the plant. It has brought devastation of fruit orchards in Utah, costing fruit producers millions of dollars. Hardly any county in Utah is free from this destructive nutritional disease.
Growth And Nutrition Of Plants As Affected By Various Levels Of Exchangeable Sodium, Mohammad B. Choudhri
Growth And Nutrition Of Plants As Affected By Various Levels Of Exchangeable Sodium, Mohammad B. Choudhri
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In saline soils, which are characterized by an appreciable quantity of neutral soluble salts, plant growth is adversely affected due to the increase in osmotic pressure and the consequent decrease in the physiological availability of water. In addition, growth may also be restricted through the accumulation of toxic quantities of various ions within the plant.
On the other hand, alkali soils, whether saline or non-saline, are characterized by a high content of exchangeable sodium in the cation-exchange complex. One reason of low productivity on these soils is the unfavorable physical conditions induced by the dispersing action of the sodium ions. …
An Analysis Of School Drop-Outs At Tooele High School, Franklin Whitehouse
An Analysis Of School Drop-Outs At Tooele High School, Franklin Whitehouse
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study of approximately 50 early school drop-outs is an effort to find out why so many boys and girls leave school before they complete their high school course. We need to know the basic reasons that prompt their decisions, not the superficial excuses that appear on many school records. The study was undertaken in the belief that when the causes are understood, they can be remedied through measures to provide adequate programs of student aid. If it is because of lack of interest in school, this, too, can be remedied through changes in school programs to make them mean …
Drainage Of Land Overlying An Artesian Aquifer: Logan-Cache Airport, John Paul Riley
Drainage Of Land Overlying An Artesian Aquifer: Logan-Cache Airport, John Paul Riley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Drainage problem Logan-Cache Airport is situated approximately 4 miles northwest of Logan, Utah, in sections 8, 9, 16, and 17, Township 12 north, Range 1 east, of Salt Lake Base and Meridian. The area of approximately 200 acres is a part of what is known as cache County Drainage District No.2. This district in itself contains more than 8,400 acres of waterlogged lands. Drainage of the se lands has, for many years, been a baffling and unsolved problem, complicated by 3 factors: (a) The whole of the valley in this area is underlain by an artesian ground-water reservoir. (b) The …
Relative Curricular Emphasis In Some Utah High Schools During The 1941-1951 Years, Edward W. Payne
Relative Curricular Emphasis In Some Utah High Schools During The 1941-1951 Years, Edward W. Payne
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
To have a sound and complete philosophy of education is a relative must for all people concerned with the teaching of children. Fortunate is the school whose administration and faculty have in common a functional definition of the term "curriculum" and its place in their total philosophy of education. The school program of only a few decades ago consisted of the strict disciplinary type of teaching, with only a few available subjects which were intended to develop the total capacities of the student. The new philosophy recognizes the variation in students as individuals. One must not assume that there is …
Growth And Development Of The Present Division Of Technology At Utah State Agricultural College, Lynn R. Willey
Growth And Development Of The Present Division Of Technology At Utah State Agricultural College, Lynn R. Willey
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This thesis traces the growth and development of the Division of Technology at the Utah State Agricultural College from 1890, when the first mechanic arts classes were taught as part of the offering in Mechanical Engineering, to the present, covering as thoroughly as possible from the source material available, the chain of events out of which the present expansive and complex program has evolved. The intention here is not merely to itemize the steps in this development, but wherever possible to investigate the influences involved; also, to give some attention to the industrial, education, and war-time needs that have created …
A Public Opinion Survey Of Ogden City Schools, Nolan R. Taylor
A Public Opinion Survey Of Ogden City Schools, Nolan R. Taylor
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Free men cannot be taught properly by slaves; courageous citizens cannot be properly educated by scared hired men. (1)
In Ogden, Utah, education is big business. With capital assets of approximately $8,000,000, a current budget of $3,065,000, a staff of 570 full-time employees, and an enrollment of 12,650 students (5), education ranks high insofar as its effects are felt by the citizenry of the community.
The administrative staff of Ogden schools feel the necessity of keeping informed on current opinions of school patrons concerning their schools. Being employed by the public, they are servants of the public; and the degree …
A Study Of The In-Service Growth Program For Ogden City Teachers, D. M. Kelley
A Study Of The In-Service Growth Program For Ogden City Teachers, D. M. Kelley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In-service growth has been defined as: “The growth which takes place after the teacher is on the job.” It is the continuation of the professional development which began during the preservice period of preparation. In-service education is a process inherent in any planned program designed to make the individual a more effective teacher. This type of education is generally considered by school administrators as an integral part of any school program.
Effect Of Bicarbonate Ion And Root Aeration On Lime-Induced Chlorosis, Willard L. Lindsay
Effect Of Bicarbonate Ion And Root Aeration On Lime-Induced Chlorosis, Willard L. Lindsay
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Chlorosis in plants has been recognized as a devastating disease for over one-hundred and fifty years. It is easily recognized by a yellowing of the plant foilage and is associated with a reduced chlorophyll synthesis.
Chlorosis is found so frequently on calcareous soils that its cause is attributed at least in part to this soil factor. It is therefore referred to as lime-induced chlorosis. This type of chlorosis has become a serious problem, especially in many of the fruit-growing regions of Europe and the Western United States where the soils are calcareous. In Utah the disease is more destructive than …
Geology Of The Rendezvous Peak Area, Cache And Box Elder Counties, Utah, Robert L. Ezell
Geology Of The Rendezvous Peak Area, Cache And Box Elder Counties, Utah, Robert L. Ezell
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This thesis presents the results of a geologic investigation of the Rendezvous Peak area, Cache and Box Elder Counties, Utah (Figure 1). The area lies between the Bear River Range on the east and the Northern Wasatch Mountains on the west (Figure 2). It is south of Cache Valley in which Logan, Utah, is located and north of Ogden Valley, east of the Wasatch Range near Ogden, Utah.
The Rendezvous Peak area is centrally located in a little known and critical area between the Logan Peak syncline in the Bear River Range and the more complex structures in the Wasatch …
The Reaction Of Some Sodium Salts Of Fatty Acids And Benzoic Acid With Α-Bromobenzyl Cyanide, Richard W. Perkins
The Reaction Of Some Sodium Salts Of Fatty Acids And Benzoic Acid With Α-Bromobenzyl Cyanide, Richard W. Perkins
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Fife (4) and O'Shaughnessy (12) have made a series of di-esters by allowing the sodium salts of various fatty acids to react with ethyl monochloracetate according to the following equation:
RCO2Na ≠ ClCH2CO2C2H5 ---------> RCO2CH2CO2C2H5 ≠ NaCl .
The mechanism of the reaction appears to be ionic and to involve the attack of an RCO2- ion on the carbon atom to which the chlorine atom is attached. As the RCO2- approaches this carbon atom the chlorine atom moves …
The Content Of Pantothenic Acid, Folic Acid And Vitamin B12 Like-Activity In Alfalfa Hay Grown In Utah Soils Treated With Different Fertilizers, Buranaphoka Kashemsri
The Content Of Pantothenic Acid, Folic Acid And Vitamin B12 Like-Activity In Alfalfa Hay Grown In Utah Soils Treated With Different Fertilizers, Buranaphoka Kashemsri
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Vitamins play an important role in the nutrition of man and animal. As early as 1897 Eijkman was able to demonstrate the symptoms of thiamine deficiency disease in birds. Since then, vitamins have been regarded as one of the most essential factors in nutrition. Only small quantities in the diet are necessary, yet lack of any of them will inhibit the growth and produce certain kinds of deficiency diseases.
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The California Quail is native to the coastal and semi-arid regions of California extending north into Oregon. Two subspecies are commonly recognized. the California Quail (Lophortyx californica brunnescens Ridgway), and the Valley Quail (Lophortyx californica californica Shaw). The two forms are very similar in coloration and habits and, for the purpose of this study, no effort is made to distinguish the two.
The Consumptive Use Of Water In Milford Valley, Utah, Terrel R. Tovey
The Consumptive Use Of Water In Milford Valley, Utah, Terrel R. Tovey
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Consumptive use, as used in this thesis, is defined as the sum of the volumes of water used by the vegetative growth of a given area in transpiration and building of plant tissue and that evaporated from adjacent soil, snow, or intercepted precipitation of the area in any specified time, divided by the given area. If the unit of time is small, the consumptive use is expressed in acre-inches per acre or depth in inches, whereas, if the unit of time is large, such as growing season or a 12-month period, the consumptive use is expressed as acre-feet per acre …
Snow College, Its Founding And Development, Ross Partington Findlay
Snow College, Its Founding And Development, Ross Partington Findlay
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
It is the purpose of this thesis to give an account of significant events in the founding and development of the school, now known as "Snow College", during the founding and maintenance by the Latter-day Saint Church.
This study is confined to the forty-four years the institution was under the control of the Church of Jesus Christ of Latter-day Saints and deals largely with data of educational significance. The problem, thus, is the founding and the development of Snow College, while under the direction of L.D.S. Church
Some Effects Of Fluctuating And Falling Water Levels On Waterfowl Production, Kenneth E. Wolf
Some Effects Of Fluctuating And Falling Water Levels On Waterfowl Production, Kenneth E. Wolf
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
There are today many areas and types of water storage. The uses to which these are put are many, and the prospect for the future can only be that there will be an increase in the number of these reservoirs. These areas are usually operated with regard only for power production, irrigation, or storage, but there is a growing concern about the effects on wildlife which this type of operation may have. Fluctuating water levels, and falling water levels are not restricted to man-made impoundments tut are characteristic of many of then. Biologists have observed that these variations in water …
The Incidence Of Lead Shot In Waterfowl Of The Pacific Flyway, With Special Reference To The Great Salt Lake Basin, Wayne H. Heuer
The Incidence Of Lead Shot In Waterfowl Of The Pacific Flyway, With Special Reference To The Great Salt Lake Basin, Wayne H. Heuer
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study was conducted to determine basic data on the incidence of lead shot in ducks us ing the Great Salt Le.lee Basin. The study has been divided into two parts; (1) incidence of ducks carrying lead shot in their tissues and (2) incidenoe of ducks carrying ingested lead shot.
The Solution Of Boundary Value Problems By Use Of The Laplace Transformation As Compared With Classical Methods, Dan W. Stoddard
The Solution Of Boundary Value Problems By Use Of The Laplace Transformation As Compared With Classical Methods, Dan W. Stoddard
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this paper is to present a study of different methods of solving certain boundary value problems. In particular it will be concerned with solutions by classical methods and by operational methods. Of the various operational methods that may be considered, the Laplace transformation appears to be the best(1) and will be used in this paper.
In the 1951 Encyclopedia Americana Annual is this report on the activities in applied mathematics for the previous year:
Progress was made on the general problem of finding the eigenvalues of matrices and systems of differential equations. Considerable effort was also …
Geology Of The Mink Creek Region, Idaho, Allen S. Keller
Geology Of The Mink Creek Region, Idaho, Allen S. Keller
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Mink Creek region is centered 14 miles northeast of Preston in Franklin County, Idaho (see Index Map, Figure 1). The area of this report comprises approximately 70 square miles. It is bounded on the north and south by parallels 42°17' and 42°11' North Latitude and on the east and west by meridians 111°37' and 111°49'. The easternmost part of the area is located in the Bear River Range and is part of the Cache National Forest.
The region is readily accessible. A paved Idaho State Highway goes through the center of the area and State Highway 34 skirts the …
The Discharge Coefficient In The Coordinate Method For Measuring Pipe Flow, Day L. Bassett
The Discharge Coefficient In The Coordinate Method For Measuring Pipe Flow, Day L. Bassett
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Agriculture, industry, and community life continue to impose great demands upon available sources of water, particularly in arid and semi-arid regions. Efficient utilization of water, demanding careful distribution and use, implies flow measurement.
The coordinate method for measuring pipe flow finds some application in industry where estimates must be made of the flow of fluids containing relatively large amounts of suspended solids that would render other measuring devices ineffective. Widest application may be found, however, in agriculture where a simple, quick, and inexpensive means for estimating well flow, pump discharge, drain efflux, etc., is necessary if the farmers are to …
An Evaluation Of Necessary Elements For Desirable Industrial Arts Instruction In The Elementary Schools Of Utah, Lee W. Ralphs
An Evaluation Of Necessary Elements For Desirable Industrial Arts Instruction In The Elementary Schools Of Utah, Lee W. Ralphs
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
An essential part of the elementary school curriculum is the creative activity program connected with it. Educators believe that the fullest development of the child can best be attained through a program which provides a series of well selected experiences and activities. At present education considers the whole child--his abilities, needs, and interests--as vital factors in the development of a good curriculum, instead of merely the concrete and formal subject matter. Recently there has been an expressed view, by administrators of elementary school systems and many authorities and industrial arts teachers, that there is a definite need for formulating an …
High School Grades And College Aptitude Tests As Indices To College Achievement And Contination At Utah State Agricultural College, Walter Clarence Johnson
High School Grades And College Aptitude Tests As Indices To College Achievement And Contination At Utah State Agricultural College, Walter Clarence Johnson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
For many years colleges have been concerned about entrance requirements and procedures for admitting students. In fact, to deal with such matters was one purpose of the famous N.E.A Committee of Ten which reported in 1893. A few years later the Committee on College Entrance Requirements met and considered the problem directly. Transcripts of credits from high school including specified subjects, the passing of the generally recognized College Entrance Board Examination, and the passing of entrance examinations set up by the individual colleges all have been used as evidence for admission to college. Such examinations are also used as indicators …
Evaluating The Curriculum Of Logan Secondary Schools In Terms Of Meeting The Imperative Needs Of Youth, Leo R. Walker
Evaluating The Curriculum Of Logan Secondary Schools In Terms Of Meeting The Imperative Needs Of Youth, Leo R. Walker
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Committee on Curriculum Planning and Development of the National Association of Secondary School Principals has published a list of 10 objectives for secondary schools, known as the Ten Common and Essential Needs That All Youth Have in a Democratic Society.(8) They are generally referred to as The Ten Imperative Needs of Youth.
Imperative Need No. 1. All youth need to develop saleable skills and those understandings and attitudes that make the worker an intelligent and productive participant in economic life. To this end, most youth need supervised work experience as well as education in the skills and knowledge of …
The Freezing Point Of Water In Puddled And Unpuddled Soils At Different Soil Moisture Tension Values, Robert B. Campbell
The Freezing Point Of Water In Puddled And Unpuddled Soils At Different Soil Moisture Tension Values, Robert B. Campbell
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A technique that will adequately describe the physical condition of water in the soil has long been desired by scientists. The method should include the effect of soluble materials on the osmotic pressure of the soil solution, and also the effect of surface force action between the soil and soil water.
Parker (8) demonstrated that the freezing point was reduced in the presence of finely divided material. This suggested the possibility of using the cryoscopic procedure to measure the physical condition of water soil. More recently, the introduction of Thermistors for accurate temperature measurement have made it desirable to investigate …
Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook
Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The study of the Utah sculpin in Logan River was based on 801 specimens collected during 1949 to March 1951. Numbers of fish examined for various catagories of the study wares length-frequency, 495; aging by vertebrae, 407; length-weight relationship, 601; and food habits, 275.
Fish were collected by use of an electric shocking machine generating 600 watts and 220 volts. Numbers of fish occurred as high as 150 per tenth mile of stream. Preferred habitats occurred in areas of coarse gravel and small rocks.
Vertebrae dissected from the fish were used in age determination. Length-frequency proved to be a general …
Pellet Seeding On Sagebrush Range, Gordon E. Gatherum
Pellet Seeding On Sagebrush Range, Gordon E. Gatherum
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Seeding deteriorated range lands efficiently and economically has become one of the most promising means of improving the agricultural economy of the western range states. By providing the most rapid means of increasing the quantity and improving the quality of forage for livestock, and aiding in the prevention of soil erosion, artificial seeding contributes directly to the stability of agriculture.
Although many successful methods of artificial revegetation have been developed by experience and through research, there is still a great need for refinement in techniques to insure better overall success and greater economy of operation. Improper methods often result in …
Consumptive Use Of Water Studies In The Ashley And Ferron Creek Areas Of Utah, Elden E. Fisher
Consumptive Use Of Water Studies In The Ashley And Ferron Creek Areas Of Utah, Elden E. Fisher
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The inadequacy of water and power supplies in Utah for agriculture, for industry, for domestic and community consumption has retarded the State's economic growth. Shortages of water and hydroelectric power are the principle impediments to the full realization of other potentials of Utah, that is, the full use of its arable lands, the wide and diversified use of its industrial raw materials, and the unrestricted development of its communities. The problem of securing additional sources of water and power has resolved itself into one of major concern. The objective of this study was to determine unit values of consumptive use …
Harvest Of Wild And Stocked Fish From The Logan River Drainage, Louis S. Pechacek
Harvest Of Wild And Stocked Fish From The Logan River Drainage, Louis S. Pechacek
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Logan River heads in the southeastern corner of Franklin County, Idaho, and runs in a south and westerly direction. It enters the state of Utah through the northern boundary in the northeast corner of Cache County. The main stream is fed by two tributary streams which head in separate directions a few miles apart. The Franklin Basin branch is the main contributing tributary while the Beaver Creek branch is nearly as large.
A Study Of The 1947 American Council On Education Psychological Examination And Its Usefulness In Predicting The Grades Of Utah State Agricultural College Freshmen, Russell B. Bateson
A Study Of The 1947 American Council On Education Psychological Examination And Its Usefulness In Predicting The Grades Of Utah State Agricultural College Freshmen, Russell B. Bateson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Prediction of future performance is attempted in almost every field of endeavor. The accuracy varies in different lines of study, and perhaps none is as subject to variability as those attempted with human beings as subjects.
When an attempt is made to ascertain in advance the performance of college students in their schoolwork, a multiplicity of complicating problems are introduced. Whereas intelligence can be fairly well isolated, it is difficult to control or even enumerated all the other factors that come into the problem of predicting grades from scores received on an intelligence examination. Among the factors that are difficult …