Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Electrical and Computer Engineering (2053)
- Mechanical Engineering (1595)
- Aerospace Engineering (1460)
- Civil and Environmental Engineering (1193)
- Operations Research, Systems Engineering and Industrial Engineering (1006)
-
- Physical Sciences and Mathematics (925)
- Computer Engineering (537)
- Electrical and Electronics (478)
- Biomedical Engineering and Bioengineering (455)
- Chemical Engineering (447)
- Operational Research (426)
- Computer Sciences (397)
- Materials Science and Engineering (397)
- Signal Processing (353)
- Aviation (295)
- Civil Engineering (282)
- Systems Engineering (205)
- Environmental Engineering (204)
- Business (202)
- Navigation, Guidance, Control and Dynamics (201)
- Physics (197)
- Construction Engineering and Management (185)
- Other Operations Research, Systems Engineering and Industrial Engineering (167)
- Aerodynamics and Fluid Mechanics (166)
- Digital Communications and Networking (165)
- Engineering Science and Materials (164)
- Nuclear Engineering (150)
- Space Vehicles (145)
- Electromagnetics and Photonics (130)
- Institution
-
- Air Force Institute of Technology (4078)
- Brigham Young University (2171)
- University of South Carolina (862)
- University of Wisconsin Milwaukee (638)
- Virginia Commonwealth University (600)
-
- Florida Institute of Technology (553)
- Rowan University (287)
- University of Texas Rio Grande Valley (255)
- Mississippi State University (134)
- University for Business and Technology in Kosovo (110)
- American University in Cairo (105)
- University of North Dakota (15)
- Columbus State University (8)
- Illinois State University (8)
- City University of New York (CUNY) (2)
- Pepperdine University (1)
- Keyword
-
- #antcenter (292)
- Optimization (104)
- FPGA (88)
- Machine learning (82)
- Modeling (68)
-
- Simulation (67)
- Applied sciences (63)
- UAV (63)
- Global Positioning System (59)
- Computer vision (54)
- Additive manufacturing (52)
- Decision making (51)
- Microelectromechanical systems (50)
- Remote sensing (49)
- Image processing (48)
- Machine Learning (48)
- Algorithms (47)
- Drone aircraft (47)
- Engineering, Chemical Engineering (44)
- Synthetic aperture radar (42)
- Target acquisition (42)
- Compliant mechanisms (41)
- Engineering, Mechanical Engineering (41)
- Finite element analysis (41)
- Kalman filtering (40)
- Reliability (40)
- Signal processing (40)
- Combustion (39)
- CFD (38)
- Deep learning (38)
- Publication Year
Articles 9811 - 9827 of 9827
Full-Text Articles in Engineering
Radiant Flux Distribution From Concave Radiation Sources, Richard K. Duke
Radiant Flux Distribution From Concave Radiation Sources, Richard K. Duke
Theses and Dissertations
In order to analyse the radiant heat transfer characteristics of a concave source, two vital concepts must be clearly understood. The first is called the apparent emissivity Ea and is a function of both the local total emissivity E and of the geometry of the source. Although the total emissivities of ordinary substances range between zero and one, the two extremeties never occur. Surface emissivities which approach these values in the limit, must be created mechanically from materials in the range 0
Design And Fabrication Of An Apparatus To Determine Heat Transfer Coefficients In An Air-Particle Mixture Over A Horizontal Flat Plate At Uniform Temperature, Louis G. Hunter Jr.
Design And Fabrication Of An Apparatus To Determine Heat Transfer Coefficients In An Air-Particle Mixture Over A Horizontal Flat Plate At Uniform Temperature, Louis G. Hunter Jr.
Theses and Dissertations
The study of two phase flow, where a finely divided solid is suspended in a fluid medium, has received considerable attention in the last five years due to the increased number of systems in which this phenomena occurs. The two most important areas involving the gas- particle mechanism are nuclear reactor heat exchangers and liquid and solid rockets.
Study Of Aerodynamic Forces On An Unsymmetrical Body As It Is Oscillated In A Air Stream, David Rees Tree
Study Of Aerodynamic Forces On An Unsymmetrical Body As It Is Oscillated In A Air Stream, David Rees Tree
Theses and Dissertations
The object of this work was to design and build equipment to measure the aerodynamic forces which will cause self-induced oscillations of a body having an unsymmetrical cross-section, such as a D-section. This self-induced oscillation has been called "stall flutter" or in electrical transmission lines, "galloping-transmission lines." It is hoped that this equipment will be used to gain basic Information about these aerodynamic forces.
Heat Flux Measurement By Miniature Calorimeters, Gary Rex Coffin
Heat Flux Measurement By Miniature Calorimeters, Gary Rex Coffin
Theses and Dissertations
During recent years an increasing number of technical firms and manufacturers have begun to specify heat flux, energy input per unit area per unit time, as a testing and designing criteria. This change in the boundary condition (to heat flux from temperature excess or others) evolved from the idea that each material has a characteristic burning temperature. Therefore, the rate of ablation or burning depends mainly upon the rate of energy input into the specimen, and not its temperature. Thus, the need for a flux measuring device became more acute.
The Aerodynamic Drag On Spheres Under Acceleration, Charles Earl Nielson
The Aerodynamic Drag On Spheres Under Acceleration, Charles Earl Nielson
Theses and Dissertations
The requirement of a greater understanding of the behavior of solids-gas systems has shown itself profoundly with the advancement of science and technology during recent years. The range and variety of processes in which these systems play an important role is exceptionally broad. These processes range from meteorological disturbances such as dust storms, rain and snow, to the use of vacuum cleaning equipment. With the advancement of aircraft and space technology the influence of these systems is again felt in such cases as the motion of rockets, missiles and aircraft in flight, the behavior of liquid droplets or metallic particles …
The Verification And Use Of A Hot-Wire Anemometer In Turbulence Measurements, Charles Young Warner
The Verification And Use Of A Hot-Wire Anemometer In Turbulence Measurements, Charles Young Warner
Theses and Dissertations
One very important part of research is the development of effective, reliable instruments. The measurement of turbulence in flow fields is a complex research problem. It depends heavily upon the hot-wire anemometer. This thesis describes the evaluation and use of a constant- current hot-wire anemometer, and presents the equations governing its use for turbulence measurements. The thesis first enumerates and explains some of the important parameters of turbulent flows, providing the basis for the discussion of their measurement which follows. The cooling of a heated wire in forced convection and a typical anemometer circuit are discussed. Derivations of the instrument …
A Study Of The Vibration Characteristics Of A Thin Shell Hyperbolic Paraboloid, Farrin W. West
A Study Of The Vibration Characteristics Of A Thin Shell Hyperbolic Paraboloid, Farrin W. West
Theses and Dissertations
Recent progress in structural engineering has been marked by the increased use of thin shells as load carrying members. In particular, shells of revolution have been widely utilized in the missile industry whereas shells of arbitrary shape have been incorporated in the architectural design of today's modern buildings. Missile applications have been extensively studied both statically and dynamically. However, architechural applications have generally been limited to the statics problem with little consideration being given to the dynamic behavior of these unique structures.
A Parametric Study Of The Heat Transfer Characteristics Of A Moving Band Heat Exchanger, Larry Hyde Brim
A Parametric Study Of The Heat Transfer Characteristics Of A Moving Band Heat Exchanger, Larry Hyde Brim
Theses and Dissertations
In recent years much attention has been devoted to the development of efficient heat exchangers. The regenerative or moving matrix heat exchanger is one type which has been considered. Most regenerative heat exchangers use one of the conventional types of high area matrices mounted in a drum or disk in such a manner that it can be moved in a continuous cycle from a cold fluid stream to a hot fluid stream and back again. A rather different approach to the design of a regenerative heat exchanger which has been patented in this country is a set of flexible moving …
Stress Analysis Of An Infinite Cylinder With An Irregular Shaped Cavity Using Complex Variable Techniques, Gerald H. Lindsey
Stress Analysis Of An Infinite Cylinder With An Irregular Shaped Cavity Using Complex Variable Techniques, Gerald H. Lindsey
Theses and Dissertations
The advancement of modern technology has brought with It a demand upon the engineer for more thorough analysis techniques. This has been precipitated by the advent of missiles and space-craft that do not permit regular inspections to determine causes of failure, crack propagation, design weaknesses, etc. Thus, a more complete analytical work must be performed to facilitate a foreknowledge of reaction and performance of a particular design to its environment.
A Literature Review Covering The Effect Of Residual Stresses On Fatigue Strength Of Steel, Clarence A. Calder
A Literature Review Covering The Effect Of Residual Stresses On Fatigue Strength Of Steel, Clarence A. Calder
Theses and Dissertations
Fatigue fracture usually is defined as the failure of a part at a stress below its breaking stress due to repetitive loading conditions. It is now a well known fact that a part, designed for a maximum stress well below the yield point of the material, may be very apt to fail under cyclic loading conditions over a period of time. The metal appears to "wear out" after a time just like humans do and fatigue failure occurs. Metal fatigue may be contrasted to animal fatigue in that l) its detection before the latter stages is normally difficult if not …
The Aerodynamic Drag Of Spheres, Leon Rouzelle Scott
The Aerodynamic Drag Of Spheres, Leon Rouzelle Scott
Theses and Dissertations
A literature survey was conducted to determine the factors which affect aerodynamic drag of spheres. Graphs are presented which show the effect of each variable where such information was available. Equipment was designed and built for the purpose of studying the effects of acceleration on the aerodynamic drag of spheres. Special emphasis was placed on the measurement and control of each of the other variables which can affect the drag. Tests were conducted using large spheres in air and water to show that the method presented can produce a valid determination of the drag coefficients. The numerical values of the …
Investigation Of The Platinum-Rich Portion Of The Platinum-Tantalum Phase Diagram, Bob Dean Browning
Investigation Of The Platinum-Rich Portion Of The Platinum-Tantalum Phase Diagram, Bob Dean Browning
Theses and Dissertations
The Pt-Ta binary system was investigated at two isotherms;1000°C and 1500°C, and at eleven alloy compositions in the range of 50 to 100 atomic percent platinum. The alloys were examined by x-ray diffraction and metallography. Three intermetallic compounds, Pt2Ta, Pt3Ta, and Pt4Ta were found to exist in this composition range. The Pt4Ta intermetallic appeared only at the 1500°C isotherm. Platinum dissolved tantalum substitutionally to 90 atomic percent at 1500 °C and to approximately 80 atomic percent at 1000 °C.
The Design Of A Six Specimen Tensile Fatigue Machine, Charles Mark Percival
The Design Of A Six Specimen Tensile Fatigue Machine, Charles Mark Percival
Theses and Dissertations
Although metal fatigue has been recognized for many years and during that time many persons have tried to find the explanation for it, there is still not a complete theory concerning this phenomenon. Metal fatigue is one of the major problems the modem designer must face. If the design techniques are to progress as other technological advances are made, it is evident that it will involve a better understanding of metal fatigue.
Design Of An Air Stabilized Plasma Arc, William Robert Clarke
Design Of An Air Stabilized Plasma Arc, William Robert Clarke
Theses and Dissertations
The plasma-arc generator (see figure 1, 2) has been used for several years as an invaluable ground test facility in which the gas stagnation properties of hypervelocity flight may be reproduced. The plasma is produced by shorting an electric arc between two electrodes; then directing a gas stream through the arc. The gas stream is thus heated to a ''temperature " of forty to fifty thousand degrees Farenheit. At this temperature the gas is in a state of partial ionization termed "plasma". The plasma stream is then constricted and directed by a nozzle into a test chamber and over the …
Factors That Influenced Homesteading And Land Abandonment In San Juan County, Utah, Melvin J. Frost
Factors That Influenced Homesteading And Land Abandonment In San Juan County, Utah, Melvin J. Frost
Theses and Dissertations
Homesteading in San Juan County, Utah is for the most part, located on Sage Plain at elevations between 6,000 to 7,200 feet. Sage Plain is an undulating surface deeply dissected with canyons. The soil is relatively shallow and the predominant vegetation is pinyon, juniper, sage brush and blue-stem grass.
The 52 year mean precipitation is 15.47 inches. Since the beginning of weather records there has been a noticeable decrease in the annual precipitation. There is generally sufficient moisture to mature winter wheat. Pinto beans are also grown in the more favorable locations.
Principle factors that have influenced homesteading and land …
A Historical Study Of The Influence Of The Railroad Upon Ogden, Utah, 1868-1875, Alma W. Hansen
A Historical Study Of The Influence Of The Railroad Upon Ogden, Utah, 1868-1875, Alma W. Hansen
Theses and Dissertations
The general plan of this study is to sketch the beginning of Ogden settlement and the early history up to the beginnings of the influence of the coming of the railroad, then to follow in more detail the conditions and influences that developed as the railroad was built and the changes that followed the completion of the line.
Experiments In The Explosive Pulverization Of North Dakota Lignite, James Marvin Airgood
Experiments In The Explosive Pulverization Of North Dakota Lignite, James Marvin Airgood
Theses and Dissertations
During the past several years the United States Bureau of Mines and the University of North Dakota have conducted extensive investigation aimed toward the up-grading of lignite coal. These investigations include steam drying, carbonation, briquetting, and gasification of North Dakota lignite. Research work by both the Bureau of Mines and the University of North Dakota is continuing and expanding at the present time. During the past year the construction and operation of a lignite research laboratory on the University campus has been authorized by the United States government. The operation of this laboratory by the United States Bureau of Mines …