Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (4149)
- Physical Sciences and Mathematics (1661)
- Electrical and Computer Engineering (1170)
- Education (1013)
- Social and Behavioral Sciences (928)
-
- Life Sciences (676)
- Civil and Environmental Engineering (663)
- Arts and Humanities (651)
- Mechanical Engineering (648)
- Computer Sciences (525)
- Physics (441)
- Medicine and Health Sciences (423)
- Electrical and Electronics (400)
- Civil Engineering (373)
- Computer Engineering (328)
- Electromagnetics and Photonics (292)
- Optics (285)
- Materials Science and Engineering (268)
- Chemistry (264)
- Educational Leadership (262)
- Operations Research, Systems Engineering and Industrial Engineering (249)
- Biomedical Engineering and Bioengineering (232)
- Chemical Engineering (229)
- Industrial Engineering (216)
- Environmental Sciences (203)
- Psychology (199)
- Environmental Engineering (188)
- Higher Education (171)
- Educational Administration and Supervision (158)
- Sociology (153)
- Institution
- Keyword
-
- Daniel Felix Ritchie School of Engineering and Computer Science (398)
- Morgridge College of Education (135)
- Education (122)
- Machine learning (105)
- College of Arts Humanities and Social Sciences (103)
-
- Electrical and Computer Engineering (93)
- Mechanical and Materials Engineering (92)
- Simulation (85)
- Computer Science (68)
- Higher education (67)
- College of Natural Science and Mathematics (63)
- Technology (56)
- Modeling (53)
- Nanoparticles (52)
- Josef Korbel School of International Studies (42)
- Optimization (42)
- Artificial intelligence (41)
- Gender (41)
- Computer vision (40)
- Leadership (39)
- School administration (39)
- Data mining (37)
- Remote sensing (36)
- Retention (34)
- Deep learning (33)
- Higher Education (33)
- Machine Learning (33)
- STEM (31)
- Performance (30)
- Renewable energy (30)
- Publication Year
Articles 10471 - 10500 of 11607
Full-Text Articles in Entire DC Network
Nutrient Sources And Transport In The Central Region Of The Big Sioux River, South Dakota, Marvin E. Hora
Nutrient Sources And Transport In The Central Region Of The Big Sioux River, South Dakota, Marvin E. Hora
Electronic Theses and Dissertations
Concentration and flow of total phosphate (TP), total organic nitrogen (TON), and total organic carbon (TOC) were measured from November 9, 1971 to November 8, 1972 on the Big Sioux River, Six Mile-North Deer Creek, and Drainage M. The Big Sioux River transported 418,640 x 10 3 m3 of water, 776,880 kg TP, 599,590 kg TON, and 5,419,580 kg TOC during the study-year. Six Mile Creek transported 23,900 x 10 3 m 3 of water, 52,040 kg TP, 43,580 kg TON, and 327,860 kg of TOC. The transport of water and nutrients in Six Mile Creek per square kilometer of …
The Effects Of Irrigation Application Depth On Corn Yield And Soil Moisture, Ronald L. Frankenstein
The Effects Of Irrigation Application Depth On Corn Yield And Soil Moisture, Ronald L. Frankenstein
Electronic Theses and Dissertations
Today's technology has done much to decrease irrigation labor demands with higher investments in equipment. A center pivot irrigation machine is an example of an irrigation method that allows control over the amount of' water applied with greatly reduced labor requirements. Irrigation with the center pivot system is often characterized by one to two inch irrigation application depths. These irrigation depths are often used to help avoid deep wheel tracks, to utilize the high initial infiltration rate of soil, and to minimize the variation in soil moisture in the soil profile. The general purpose of this study was to evaluate …
Unsupervised Iterative Clustering In Pattern Recognition, G. K. Kaveriappa
Unsupervised Iterative Clustering In Pattern Recognition, G. K. Kaveriappa
Electronic Theses and Dissertations
In the fast growing field of remote sensing acquiring information through the use of cameras and related devices, such as radar and thermal infrared sensors, operated from aircraft and spacecraft - several useful developments are taking place. Several of these developments are centered around the remote sensing vehicle known as ERTS (the Earth Resources Technology Satellite), which is currently orbiting and photographing the earth at an altitude of approximately 570 miles. Experience has shown that even an expert, well versed in remote sensing, usually cannot derive adequate information from merely a single “frame” of remote sensing imagery covering the area …
Instrumentation For The Study Of Animal Responses To Ultrasonic Sound, Philip Y. L. Kwan
Instrumentation For The Study Of Animal Responses To Ultrasonic Sound, Philip Y. L. Kwan
Electronic Theses and Dissertations
In cooperation with the United States Department of Agriculture, Agricultural Research Service, the Electrical Engineering Department at South Dakota State University is testing the effects of ultrasound on coyotes. It is known that coyotes can hear high pitched tones of higher frequency than that of the human ear. The overall goal of this research is to investigate the feasibility of using ultrasound to repel predators, mainly the coyote, from livestock. It has also been found from preliminary experiments that there is a significant increase in the heart rate of the coyote during exposure to noise levels of 100 to 110 …
On Acoustic Measurement Of Soil Moisture, Douglas George Knabe
On Acoustic Measurement Of Soil Moisture, Douglas George Knabe
Electronic Theses and Dissertations
The subject of this thesis is the use of sound transmission parameters as indicators of soil moisture. Sound waves have long been used in subsurface explorations. Shepard (1935) describes a seismic method. At the present time there are several seismic methods in use. In general, measurement is based on the fact that the velocity of shock waves is a function of the density and of other properties of the material through which they travel. A change in the significant properties of the material in the path of the sound waves causes reflections and velocity changes. These changes in the sound …
Design And Evaluation Of Air Distribution Systems In Agricultural Tractor Cabs For Summer Environmental Control, Michael Albert Vig
Design And Evaluation Of Air Distribution Systems In Agricultural Tractor Cabs For Summer Environmental Control, Michael Albert Vig
Electronic Theses and Dissertations
When agriculture was at the stage of horse drawn implements, man used an umbrella or some other form of sunshade to reduce radiation from the sun. An umbrella sufficed as an attempt at environmental control. Farmers worked long hours and little concern was given to personal comfort. Environmental control measures for farmers improved little with the introduction of the farm tractor. The farmer then moved the umbrella from the horse drawn implement to a mount over the tractor seat. Later tractors were developed with windshields or simply windbreaks. These offered protection only when going against the wind and dust. For …
The Unsteady Circulation Distribution In Rotors And Its Application To Noise Studies, Assem A. Fathy
The Unsteady Circulation Distribution In Rotors And Its Application To Noise Studies, Assem A. Fathy
Electronic Theses and Dissertations
A new method for the calculation of the unsteady circulation distribution in axial flow compressors was developed. The classical assumption of representing the rotor by a two-dimensional infinite cascade was eliminated. Instead the more realistic case of a radial cascade with blades of finite length was studied. The blades were assumed to be thin and only slightly cambered. The flow was assumed ·to be incompressible and inviscid and the secondary flow effects were neglected. The velocity induced at an arbitrary point of a reference blade due to the bound vortices on the blade under consideration and the other blades and …
Extraction Mechanism For The System : Erbium Nitrate-Water-Di-(2-Ethylhexyl) Phosphoric Acid In N-Heptane / By O. P. Soni, O. P. Soni
Electronic Theses and Dissertations
No abstract provided.
A Survey Of The Lunch Practices And Food Preferences Of High School Students Enrolled In The W. P. Daniel High School, New Albany, Mississippi / By Wilma Maude (Barkley) Reeves, Wilma Maude Reeves
A Survey Of The Lunch Practices And Food Preferences Of High School Students Enrolled In The W. P. Daniel High School, New Albany, Mississippi / By Wilma Maude (Barkley) Reeves, Wilma Maude Reeves
Electronic Theses and Dissertations
No abstract provided.
Two-Phase Rocket Exhaust Impingement Study, Yuan Hsia
Two-Phase Rocket Exhaust Impingement Study, Yuan Hsia
Electronic Theses and Dissertations
No abstract provided.
Listeners In The Ruins : The Protagonists In The Fiction Of Walker Percy, Teresa Ann Neaves
Listeners In The Ruins : The Protagonists In The Fiction Of Walker Percy, Teresa Ann Neaves
Electronic Theses and Dissertations
No abstract provided.
An Implantable Transmitter And A Complete Telemetry System For Body Temperature Measurement, Delbert D. Dais
An Implantable Transmitter And A Complete Telemetry System For Body Temperature Measurement, Delbert D. Dais
Electronic Theses and Dissertations
This manuscript includes the specification, design, operation and results of an implantable temperature sensing transmitter and a pulse frequency to voltage converter with a digital temperature readout. The research project also includes Frequency Modulated (FM) receiver to complete the temperature measuring telemetry system. What are telemetry and biotelemetry? According to the Modern Dictionary of Electronics, telemetry is "the science of sensing and monitoring of information at some remote location and transmitting the data to a convenient location to be read or recorded". Biotelemetry is "the technique of measuring or monitoring vital processes and transmitting data without wire to a point …
Computerized Distribution System Protection Program, Rodney C. H. Scheel
Computerized Distribution System Protection Program, Rodney C. H. Scheel
Electronic Theses and Dissertations
The protection of power distribution systems is essential to insure customer reliability of service, and minimize damage caused by man, nature, and material defects. Large currents flowing through devices and lines which are· not designed to carry these currents for long periods of time cause electrical damage. The distribution system must be protected from the product it delivers, electric energy, in magnitudes larger than the system was designed to carry. Distribution system protection is provided by devices which interrupt damaging currents. A distribution system fault study and a distribution system coordination study must be performed to provide distribution system protection. …
General Series Solution Of The Elasticity Problem Of A Compositestrip, Dragoslav B. Basic
General Series Solution Of The Elasticity Problem Of A Compositestrip, Dragoslav B. Basic
Electronic Theses and Dissertations
No abstract provided.
The Old Age Pension Movement In Great Britain, 1878-1908, Dennis Jerrell Mitchell
The Old Age Pension Movement In Great Britain, 1878-1908, Dennis Jerrell Mitchell
Electronic Theses and Dissertations
No abstract provided.
Spectrum Analysis Of Water And Drag Reducing Polymer In Pipe Flow, Walter H. Klaus
Spectrum Analysis Of Water And Drag Reducing Polymer In Pipe Flow, Walter H. Klaus
Electronic Theses and Dissertations
No abstract provided.
Petrology Of The Zilpha Clays And Muds, Attala County, Mississippi, Donald Brooks Felio
Petrology Of The Zilpha Clays And Muds, Attala County, Mississippi, Donald Brooks Felio
Electronic Theses and Dissertations
No abstract provided.
Role Orientations Of Semi-Professionals : A Study Of Vocational Education In Four Southeastern States, Larry Joe Griffin
Role Orientations Of Semi-Professionals : A Study Of Vocational Education In Four Southeastern States, Larry Joe Griffin
Electronic Theses and Dissertations
No abstract provided.
Simulating Temperature Profiles In Prill Formation, Carlos Lindsey Mcmorris
Simulating Temperature Profiles In Prill Formation, Carlos Lindsey Mcmorris
Electronic Theses and Dissertations
No abstract provided.
Synthesis Of Conformationally Restricted Analogs Of Haloperidol/ By Norman A. Wade, Norman A. Wade
Synthesis Of Conformationally Restricted Analogs Of Haloperidol/ By Norman A. Wade, Norman A. Wade
Electronic Theses and Dissertations
No abstract provided.
The Reactions Of Phenanthrene Over A Nickel Catalyst Using A Pulsed Catalytic Microreactor, Tai-Chong Chang
The Reactions Of Phenanthrene Over A Nickel Catalyst Using A Pulsed Catalytic Microreactor, Tai-Chong Chang
Electronic Theses and Dissertations
No abstract provided.
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.
An Analysis Of The Activities Of Thirty-Two Pharmacy Externs Inthe Community Clinical Pharmacy Program At The University Of Mississippi, William L. Hightower
An Analysis Of The Activities Of Thirty-Two Pharmacy Externs Inthe Community Clinical Pharmacy Program At The University Of Mississippi, William L. Hightower
Electronic Theses and Dissertations
No abstract provided.
Novel Phenylalanine Derivatives Which Are Structurally Analogousto Liquid Crystalline Compounds / By Chin Hsing Yang, Chin Hsing Yang
Novel Phenylalanine Derivatives Which Are Structurally Analogousto Liquid Crystalline Compounds / By Chin Hsing Yang, Chin Hsing Yang
Electronic Theses and Dissertations
No abstract provided.
The Extraction Of Magnesium From Aqueous Multicomponent Solutions Involving Mgcl Nacl, Kcl And Cacl / By Kuo-Shien Yu, Kuo-Shien Yu
The Extraction Of Magnesium From Aqueous Multicomponent Solutions Involving Mgcl Nacl, Kcl And Cacl / By Kuo-Shien Yu, Kuo-Shien Yu
Electronic Theses and Dissertations
No abstract provided.
Analysis Of The Balun-Fed Dipole Antenna Above A Ground Plane Including Its Supporting Structure, Michael Robert Long
Analysis Of The Balun-Fed Dipole Antenna Above A Ground Plane Including Its Supporting Structure, Michael Robert Long
Electronic Theses and Dissertations
No abstract provided.
Quantification Of Pollutants In Surface Runoff From Agricultural Lands In Brookings County, South Dakota, Leland Lester Harms
Quantification Of Pollutants In Surface Runoff From Agricultural Lands In Brookings County, South Dakota, Leland Lester Harms
Electronic Theses and Dissertations
Surface runoff from snowmelt and rainfall was measured 1n eastern South Dakota from seven sites (7.18 to 18.69 acres) during 1971 and 1972. All sites had single crops which included corn, oats, pasture and hayland. All land was farmed under normal farming conditions. Samples were taken periodically throughout each runoff event, and a single composite sample was made from the individual samples for a particular site. The composite sample represented the entire runoff event. The amount of rainfall and the runoff flow were measured. Determinations on the composite sample included total coliform, fecal coliform, fecal streptococcus, soluble pesticides, specific conductance, …
Bacterial Quality Of Segments Of The Receiving Streams In The Vicinity Of Lagoon Outlets In The Big Sioux River Basin, John H. Wellner
Bacterial Quality Of Segments Of The Receiving Streams In The Vicinity Of Lagoon Outlets In The Big Sioux River Basin, John H. Wellner
Electronic Theses and Dissertations
The Water Quality Act of 1965, in essence, required each state to adopt quality standards for interstate water. Therefore, in February 1967, the State of South Dakota adopted water quality standards considering existing and potential beneficial uses and protection of the public health. Concern for the health of the public predicated the inclusion of bacterial limits as a portion of these standards. Lagooning of wastewater, which has been widely employed in sparsely populated areas of the Midwest because of the low land costs and ease of operation, has been considered to provide sufficient treatment in order that the quality of …
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.