Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (3531)
- Engineering (1932)
- Education (1722)
- Chemistry (781)
- Social and Behavioral Sciences (731)
-
- Electrical and Computer Engineering (701)
- Life Sciences (685)
- Environmental Sciences (627)
- Physics (618)
- Computer Sciences (567)
- Educational Leadership (404)
- Mathematics (371)
- Natural Resources and Conservation (332)
- Earth Sciences (326)
- Arts and Humanities (312)
- Optics (291)
- Electromagnetics and Photonics (279)
- Statistics and Probability (260)
- Mechanical Engineering (258)
- Curriculum and Instruction (248)
- Educational Assessment, Evaluation, and Research (236)
- Civil and Environmental Engineering (235)
- Educational Administration and Supervision (219)
- Medicine and Health Sciences (215)
- Science and Mathematics Education (197)
- Psychology (196)
- Computer Engineering (166)
- Electrical and Electronics (166)
- Teacher Education and Professional Development (165)
- Biochemistry, Biophysics, and Structural Biology (158)
- Institution
- Keyword
-
- College of Natural Science and Mathematics (259)
- Morgridge College of Education (253)
- Daniel Felix Ritchie School of Engineering and Computer Science (241)
- Education (188)
- Mathematics (121)
-
- Biological Sciences (92)
- Machine learning (86)
- Chemistry and Biochemistry (77)
- College of Arts Humanities and Social Sciences (67)
- Simulation (62)
- Teaching and Learning Sciences (61)
- Electrical and Computer Engineering (60)
- Computer Science (57)
- Research Methods and Statistics (52)
- Research Methods and Information Science (51)
- Professional development (50)
- School administration (50)
- Technology (48)
- Curriculum and Instruction (46)
- Geography and the Environment (45)
- Leadership (43)
- Mechanical and Materials Engineering (43)
- Academic achievement (42)
- Graph theory (42)
- Modeling (42)
- Retention (41)
- Student achievement (41)
- Self-efficacy (40)
- Special education (39)
- Physics and Astronomy (37)
- Publication Year
- File Type
Articles 8881 - 8910 of 9775
Full-Text Articles in Entire DC Network
An Alternate Method Of Solving The Problem Of Large Deflectionson Nonlinear Viscoelastic Columns, Mow-Wo Leung
An Alternate Method Of Solving The Problem Of Large Deflectionson Nonlinear Viscoelastic Columns, Mow-Wo Leung
Electronic Theses and Dissertations
No abstract provided.
Mersenne And Fermat Numbers, Daniel James Moore
Mersenne And Fermat Numbers, Daniel James Moore
Electronic Theses and Dissertations
No abstract provided.
The Aesthetic Possibilities Of Combining Relief Sculpture And Painting, Michael Roy Dean
The Aesthetic Possibilities Of Combining Relief Sculpture And Painting, Michael Roy Dean
Electronic Theses and Dissertations
No abstract provided.
A Method Of Moments Analysis Of The Rectangular Loop Antenna, Frazier Earl Fyke
A Method Of Moments Analysis Of The Rectangular Loop Antenna, Frazier Earl Fyke
Electronic Theses and Dissertations
No abstract provided.
Log-Periodic Dipole Array : A Numerical Analysis, Hyong K. Choe
Log-Periodic Dipole Array : A Numerical Analysis, Hyong K. Choe
Electronic Theses and Dissertations
No abstract provided.
An Integral Of An Upper Semicontinuous Function / By Mary Cathryn Shelton, Mary Cathryn Shelton
An Integral Of An Upper Semicontinuous Function / By Mary Cathryn Shelton, Mary Cathryn Shelton
Electronic Theses and Dissertations
No abstract provided.
Simulation Of Dynamic Responses Of A Concentric Triple-Tube Heatexchanger To Flow Disturbances, Yuqi Lei
Simulation Of Dynamic Responses Of A Concentric Triple-Tube Heatexchanger To Flow Disturbances, Yuqi Lei
Electronic Theses and Dissertations
No abstract provided.
The Effect Of Axial Strain On The Large Deflection Of A Viscoelastic Column, Kanubhai H. Patel
The Effect Of Axial Strain On The Large Deflection Of A Viscoelastic Column, Kanubhai H. Patel
Electronic Theses and Dissertations
No abstract provided.
An Analytic Study Of A Vibrationally Relaxing Gas Flowing Through A Nozzle, William Larry Holman
An Analytic Study Of A Vibrationally Relaxing Gas Flowing Through A Nozzle, William Larry Holman
Electronic Theses and Dissertations
No abstract provided.
Adolphe Thiers, Statesman And Historian, Constance Angelica Frances Gallant
Adolphe Thiers, Statesman And Historian, Constance Angelica Frances Gallant
Electronic Theses and Dissertations
No abstract provided.
Use Of A Priori Knowledge In Moment Method Solutions / By Mark D. Tew, Mark D. Tew
Use Of A Priori Knowledge In Moment Method Solutions / By Mark D. Tew, Mark D. Tew
Electronic Theses and Dissertations
No abstract provided.
Thermodynamic Investigations Of Alcohol-Hydrocarbon Systems By Frontal Analysis, Mary Patricia Alewine
Thermodynamic Investigations Of Alcohol-Hydrocarbon Systems By Frontal Analysis, Mary Patricia Alewine
Electronic Theses and Dissertations
[No abstract provided.]
An Integrated Circuit Analog Computer, Sthaporn Udomsin
An Integrated Circuit Analog Computer, Sthaporn Udomsin
Electronic Theses and Dissertations
The Heathkit Model EC-1 Educational Analog Computer, priced at $199.95, is the least expensive general-purpose analog computer on the market. This computer contains nine unstabilized vacuum tube de amplifiers with de open loop voltage gain of about 1000. The low amplifier gain, and amplifier drift limit the accuracy of the solution. Results obtained are sometimes confusing. Many integrated circuit operational amplifiers available on the market seem to give much better performance, priced from a few dollars in monolithic form up to hundreds of dollars in hybrid form. The low-cost operational amplifiers, designed for various applications, are usually not intended for …
Comparative Study Of Constant Voltage And Constant Current Electroanesthesia, Anand Vithal Tulpule
Comparative Study Of Constant Voltage And Constant Current Electroanesthesia, Anand Vithal Tulpule
Electronic Theses and Dissertations
In the field of anesthesia, drugs are used extensively, however; electro anesthesia or the use of electric current to achieve anesthesia is also being studied because of its excellent recovery characteristics. This thesis is a comparative study of different techniques of achieving electro anesthesia. Pharmacologically, general anesthesia is a completely irreversible converging depression of certain central nervous system functions wherein respiration, circulation and the vital life support mechanisms are not seriously impaired. Clinically, general anesthesia is a production of unconsciousness, some degree of areflexia, muscular relaxation and varying degrees of respiratory depression in an orderly progression. Electro anesthesia can be …
Mathematical Simulation Of Sediment Deposit In Estuaries, Yuh- Hua Tsai
Mathematical Simulation Of Sediment Deposit In Estuaries, Yuh- Hua Tsai
Electronic Theses and Dissertations
It is viewed as necessary and useful to devise a method which can be used to solve the problems of sediment deposit in estuaries more directly and completely. In this study, three basic equations have been extended to a more general case in which lateral inflows and various width of channel are considered. A solution of the problem has been obtained by Chang and Richards. In their research, three basic equations have been successfully reduced to two differential equations by assuming that the change in bed slope due to sediment deposit in a short period is insignificant compared with the …
Abstract Integration Theory, Anne Lowe Thiel
Abstract Integration Theory, Anne Lowe Thiel
Electronic Theses and Dissertations
There are many different theories of integration, several of which are not equivalent. In books such as [3] and [4] many of the theories are discussed in detail. This paper is devoted to developing an abstract theory of integration which contains many of the classical theories as special cases. In addition, the theory to be presented has been specifically designed to include the Riemann - complete integral which was recently introduced by Henstock [2]. All integrals considered will be integrals of so-called "point-interval functions." This is a modification of the idea of integration of interval functions which was first introduced …
Impulse Voltage Breakdown Strength Vs. Temperature Of Octafluoropropane (Ca Fa) Gas Exposed To Uniform And Non-Uniform Fields, Dinesh N. Taneja
Impulse Voltage Breakdown Strength Vs. Temperature Of Octafluoropropane (Ca Fa) Gas Exposed To Uniform And Non-Uniform Fields, Dinesh N. Taneja
Electronic Theses and Dissertations
The purpose of my thesis is to investigate the impulse voltage breakdown strength of Octafluoropropane gas as a function of the temperature of the gas. The standard 1.5 x 40f4sec. positive polarity impulse waveshape was used in alt the tests. The investigation was made with and without a weak source of irradiation present near the eel I. Two types of electrode systems were used: three fourth inch sphere to grounded plane which represented a fairly uniform field, and a point to grounded plane representing a highly non-uniform field. The tests were carried out to room temperature to a temperature of …
Examination Of Transannular Participation Via Scf-Mo Calculations And Far Ultraviolet Spectroscopy, Ronald D. Schultz
Examination Of Transannular Participation Via Scf-Mo Calculations And Far Ultraviolet Spectroscopy, Ronald D. Schultz
Electronic Theses and Dissertations
Since the advent of the computer the chemist bas taken great strides in bringing the mathematical aspects of chemical systems up to date Before this time physical data on a tremendous number of different chemical systems had constantly been accumulating without theoretical backing. However, now with the tools available the chemist can at last begin the tedious and difficult task of explaining the data he has been receiving. One particular area of mathematical interest in chemistry is that which deals with the energy of a particular chemical system. In order to study this area of chemistry, theoretical or semiempirical energy …
A Design For Advanced Preparation Of Educational Researchers. (Volumes I And Ii), Fon R. Belcher
A Design For Advanced Preparation Of Educational Researchers. (Volumes I And Ii), Fon R. Belcher
Electronic Theses and Dissertations
Statement of the problem. The central problem of this study was twofold: (1) to determine whether the educational research preparation offered by selected colleges and universities bore out the findings of critics, and (2) to synthesize and synergize opinions and facts regarding educational research, as expressed by men active in the field, into a flexible proposal whereby individual student's programs in research preparation could be "custom-made" to suit their most obvious research needs. (Abstract shortened.)
A Design For Advanced Preparation Of Educational Researchers. (Volumes I And Ii), Fon R. Belcher
A Design For Advanced Preparation Of Educational Researchers. (Volumes I And Ii), Fon R. Belcher
Electronic Theses and Dissertations
Statement of the problem. The central problem of this study was twofold: (1) to determine whether the educational research preparation offered by selected colleges and universities bore out the findings of critics, and (2) to synthesize and synergize opinions and facts regarding educational research, as expressed by men active in the field, into a flexible proposal whereby individual student's programs in research preparation could be "custom-made" to suit their most obvious research needs. (Abstract shortened.)
Gaussian Pythagorean Triples, Joyce G. Ramige
Gaussian Pythagorean Triples, Joyce G. Ramige
Electronic Theses and Dissertations
For positive integers a, b, c, we call the ordered triple (a, b, c) a Pythagorean triple provided a2 + b2 + c2. A Pythagorean triple is said to be primitive if a and b are relatively prime. It is a well-known fact that a primitive Pythagorean triple (a, b, c) in which a is even can be represented by a = 2xy, b = x2 – y2, c = x2 + y2, where x and y are positive integers. Teigen and Hadwin note that it is not possible to represent all Pythagorean triples in this way. In particular, they …
Inventory Control Of Deteriorating Items, George C. Philip
Inventory Control Of Deteriorating Items, George C. Philip
Electronic Theses and Dissertations
The problem of the control and maintenance of inventories of physical goods is common to most enterprises. In the past, inventories were considered as the 'graveyard' of American business, because surplus stock was a principal cause for business failures. However, in large scale enterprises the inventory system may become too large and complex to be analyzed intuitively and any deviation from the optimum inventory policy would mean substantial losses. As a result of the current small profit margins, proper inventory control has become even more important. The basic concept in inventory control consists of striking a balance between the cost …
Influence Of Freezing Water Samples Prior To Chemical Analysis, Roger Ray Patocka
Influence Of Freezing Water Samples Prior To Chemical Analysis, Roger Ray Patocka
Electronic Theses and Dissertations
The need to collect and analyze samples of water resources periodically has been realized for many years by people concerned. with the use and preservation of water resources. As water use increased, routine analysis of water quality also increased. In order to obtain representative results of analyses, care must be taken to obtain samples which are representative of the existing field conditions. Care must also be taken to have a sample which is representative of the field conditions at the time the sample is being analyzed. The time lapse between collection and analysis of water samples can become quite lengthy …
A Minimum Problem Connected With Complete Residue Systems In The Eisenstein Integers, David Peter Ochsner
A Minimum Problem Connected With Complete Residue Systems In The Eisenstein Integers, David Peter Ochsner
Electronic Theses and Dissertations
History tells us that one of the most interesting topics of mathematics is elementary number theory, the arithmetic Gauss spoke of when he said, “Mathematics is the queen of the sciences and arithmetic the queen of mathematics." We will investigate one conjecture concerning the theory of numbers. Throughout this paper small case Latin letters with the exception of e and i will represent integers where the set of rational integers is denoted by Z. 1he Latin letters e and i respectively represent the base for the natural logarithms and the so-called imaginary unit for the set of complex numbers. An …
A Study Of Ferroresonant Conditions On Distribution Circuits Involving Cable-Connected Power Transformers, Ronald H. Miller
A Study Of Ferroresonant Conditions On Distribution Circuits Involving Cable-Connected Power Transformers, Ronald H. Miller
Electronic Theses and Dissertations
As far as electric utilities are concerned, ferroresonance is undesirable on distribution or transmission systems because it may result in either transient or sustained over voltages under certain conditions. Lightning arrestor flashover, excessive transformer hum, transformer damage, cable damage, and phase reversals have been attributed to ferroresonance. The probability of ferroresonant conditions resulting in damage to equipment has only relatively recently risen to an appreciable level. The difference lies in the fact that the farroresonant circuit is nonlinear due to the inductive component. This component is a saturable core reactance, which has its impedance value dictated by the saturation characteristic …
Simulation Of A Surface Thermal Anomaly, Corwyn Richard Meyer
Simulation Of A Surface Thermal Anomaly, Corwyn Richard Meyer
Electronic Theses and Dissertations
The demand for good quality water is rapidly increasing as the result of intensified agricultural practices and modern industry. At present fresh water supplies are adequate to meet the demand in most areas of the country. However, if present trends continue, the need for fresh water will increase faster than the development of freshwater resources. Surface water and ground water comprise the two main forms of fresh water. To date the greatest emphasis has been placed. on the development of surface water reserves although much larger quantities of fresh water are present in the form of ground water. In glaciated …
Heat And Moisture Production In A Closed Environment Beef Building During Warm Weather, Martin L. Hellickson
Heat And Moisture Production In A Closed Environment Beef Building During Warm Weather, Martin L. Hellickson
Electronic Theses and Dissertations
The need for improved production facilities is emphasized by the fact that beef consumption is at record levels in the United States with continued growth predicted. The annual per capita consumption of beef and veal in the United States was nearly 73 pounds in 1949 and increased 56 per cent to approximately 114 pounds per person by 1969. The demand for beef is also increasing in developed areas throughout the rest of the world. Increases in demands for beef have stimulated the beef industry to make significant gains in production. The production of beef in the United States has increased …
An Investigation Into The Transient Behavior Of Multichannel Queueing Systems, James R. Mccormick
An Investigation Into The Transient Behavior Of Multichannel Queueing Systems, James R. Mccormick
Electronic Theses and Dissertations
In today's world, the waiting lines or queues formed by people, machines, or other units are common and occur whenever the temporary demand for a service exceeds the capacity to provide it. These values may be the costs associated with idle production equipment and personnel or the lost sales due to unsatisfied customers. If one designs for sufficient facilities so that no queue builds up, then the operation is likely to be uneconomical due to excessive idle time at the service facility. If one designs the facility so that there is never any idle time at the service facility, then …
A Comparative Study Of Nonparametric Methods For Pattern Recognition, Sangkoo F. Hahn
A Comparative Study Of Nonparametric Methods For Pattern Recognition, Sangkoo F. Hahn
Electronic Theses and Dissertations
The main objective of this thesis is to determine and compare the classification error probabilities of several nonparametric methods to parametric ones in practical or near practical conditions using computer simulation. The usefulness of the Asymptotic Relative Efficiency (ARE) is also observed. The ARE is used to compare one algorithm with another in the limit case conditions which are far from practical circumstances. Details of the ARE concept is given in Chapter II and some of the literatures. The next objective is the investigation of the complexity of the several algorithms studied. Many investigators are implementing their algorithms on computers, …
Modified Dugdale Model, Prem Chandra Gupta
Modified Dugdale Model, Prem Chandra Gupta
Electronic Theses and Dissertations
A precise determination of the influence of plastic yielding on the deformation and failure at a crack tip is needed for accurate predictions of the behavior of cracked bodies under static load large enough to cause fracture, and subcritical repetitive loads which cause fatigue. The catastrophic growth of cracks in plates under monotonically increasing load depends on a number of factors. A general view concerning the behavior of material at the leading edge of a crack is that plastic flow and subsequent fracture of the material is influenced by factors such as strain hardening, strain rate, the state of stress, …