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Articles 1 - 30 of 31
Full-Text Articles in Engineering
Searching Govinfo.Gov/, Bert Chapman
Searching Govinfo.Gov/, Bert Chapman
Libraries Faculty and Staff Presentations
This U.S. Government Publishing Office (GPO) database provides access to information legal, legislative, and regulatory information produced on multiple subjects by the U.S. Government. Content includes congressional bills, congressional committee hearings and prints (studies), reports on legislation, the text of laws, regulations, and executive orders and multiple U.S. Government information resources covering subjects from accounting to zoology.
Timeline - History Of The Metallurgy / Mineral Processing Programs (1900-2022), Jerome Downey, Larry G. Twidwell
Timeline - History Of The Metallurgy / Mineral Processing Programs (1900-2022), Jerome Downey, Larry G. Twidwell
Metallurgy
No abstract provided.
History Of The Metallurgy / Mineral Processing Programs (1900-2022), Jerome Downey, Larry G. Twidwell
History Of The Metallurgy / Mineral Processing Programs (1900-2022), Jerome Downey, Larry G. Twidwell
Metallurgy
No abstract provided.
Past, Present And Future Of Irrigation On The U.S. Great Plains, Steve R. Evett, Paul D. Colaizzi, Freddie R. Lamm, Susan A. O'Shaughnessy, Derek M. Heeren, Thomas J. Trout, William L. Kranz, Xiaomao Lin
Past, Present And Future Of Irrigation On The U.S. Great Plains, Steve R. Evett, Paul D. Colaizzi, Freddie R. Lamm, Susan A. O'Shaughnessy, Derek M. Heeren, Thomas J. Trout, William L. Kranz, Xiaomao Lin
Department of Biological Systems Engineering: Papers and Publications
Motivated by the need for sustainable water management and technology for next-generation crop production, the future of irrigation on the U.S. Great Plains was examined through the lenses of past changes in water supply, historical changes in irrigated area, and innovations in irrigation technology, management, and agronomy. We analyzed the history of irrigated agriculture through the 1900s to the present day. We focused particularly on the efficiency and water productivity of irrigation systems (application efficiency, crop water productivity, and irrigation water use productivity) as a connection between water resource management and agricultural production. Technology innovations have greatly increased the efficiency …
Take Off To Superiority: The Evolution & Impact Of U.S. Aircraft In War, Lane Weidner
Take Off To Superiority: The Evolution & Impact Of U.S. Aircraft In War, Lane Weidner
Honors Theses
Military aviation has become a staple in the way wars are fought, and ultimately, won. This research paper takes a look at the ways that aviation has evolved and impacted wars across the U.S. history timeline. With a brief introduction of early flight and the modern concept of an aircraft, this article then delves into World Wars I and II, along with the Cold, Korean, Vietnam, and Gulf Wars. The current War on Terrorism is then investigated, and finally, a look toward the future. Topics covered include the newest aircraft of each era, technological advancements, and how strategy and war …
Investigation Of Track Structure And Condensed History Physics Models For Applications In Radiation Dosimetry On A Micro And Nano Scale In Geant4, Peter Lazarakis, Sebastien Incerti, Vladimir N. Ivanchenko, Ioanna Kyriakou, Dimitris Emfietzoglou, Stephanie Corde, Anatoly B. Rosenfeld, Michael L. F Lerch, Moeava Tehei, Susanna Guatelli
Investigation Of Track Structure And Condensed History Physics Models For Applications In Radiation Dosimetry On A Micro And Nano Scale In Geant4, Peter Lazarakis, Sebastien Incerti, Vladimir N. Ivanchenko, Ioanna Kyriakou, Dimitris Emfietzoglou, Stephanie Corde, Anatoly B. Rosenfeld, Michael L. F Lerch, Moeava Tehei, Susanna Guatelli
Faculty of Engineering and Information Sciences - Papers: Part B
Monte Carlo methods apply various physical models, either condensed history (CH) or track structure (TS), to simulate the passage of radiation through matter. Both CH and TS models continue to be applied to radiation dosimetry investigations on a micro and nano scale. However, as there has been no systematic comparison of the use of these models for such applications there can be no quantification of the uncertainty that is being introduced by the choice of physics model. A comparison of CH and TS models available in Geant4, along with a quantification of the differences in calculated quantities on a micro …
Six Degrees Of Freedom From Six Degrees Of Separation: The History Of Flight Simulators, David Keck, Morgan Lopez
Six Degrees Of Freedom From Six Degrees Of Separation: The History Of Flight Simulators, David Keck, Morgan Lopez
Publications
Some of today's advanced flight simulators have the capacity to provide pilots with experiences of six degrees of freedom: forward/backward, up/down, or left/right (or pitching, rolling, or yawing in either direction). These incredible devices are the product of over 100 years of design developments that come from a series of technological discoveries and historical events.
Temporal Data Mining Of Uncertain Water Reservoir Data, Abhinaya Mohan, Peter Revesz
Temporal Data Mining Of Uncertain Water Reservoir Data, Abhinaya Mohan, Peter Revesz
CSE Conference and Workshop Papers
This paper describes the challenges of data mining uncertain water reservoir data based on past human operations in order to learn from them reservoir policies that can be automated for the future operation of the water reservoirs. Records of human operations of water reservoirs often contain uncertain data. For example, the recorded amounts of water released and retained in the water reservoirs are typically uncertain, i.e., they are bounded by some minimum and maximum values. Moreover, the time of release is also uncertain, i.e., typically only monthly or weekly amounts are recorded. To increase the effectiveness of data mining of …
Sar-Based Vibration Estimation Using The Discrete Fractional Fourier Transform, Qi Wang, Matthew Pepin, Ryan J. Beach, Ralf Dunkel, Tom Atwood, Balu Santhanam, Walter Gerstle, Armin W. Doerry, Majeed M. Hayat
Sar-Based Vibration Estimation Using The Discrete Fractional Fourier Transform, Qi Wang, Matthew Pepin, Ryan J. Beach, Ralf Dunkel, Tom Atwood, Balu Santhanam, Walter Gerstle, Armin W. Doerry, Majeed M. Hayat
Electrical and Computer Engineering Faculty Research and Publications
A vibration estimation method for synthetic aperture radar (SAR) is presented based on a novel application of the discrete fractional Fourier transform (DFRFT). Small vibrations of ground targets introduce phase modulation in the SAR returned signals. With standard preprocessing of the returned signals, followed by the application of the DFRFT, the time-varying accelerations, frequencies, and displacements associated with vibrating objects can be extracted by successively estimating the quasi-instantaneous chirp rate in the phase-modulated signal in each subaperture. The performance of the proposed method is investigated quantitatively, and the measurable vibration frequencies and displacements are determined. Simulation results show that the …
Human Sanitary Wastes And Waste Treatment In New York City, David J. Tonjes, Christine O'Connell, Omkar Aphale, R. Lawrence Swanson
Human Sanitary Wastes And Waste Treatment In New York City, David J. Tonjes, Christine O'Connell, Omkar Aphale, R. Lawrence Swanson
Technology & Society Faculty Publications
Henry Hudson first sailed toNew Yorkharbor 400 years ago. Since then,New York Cityhas both affected and been affected by water quality in greaterNew YorkHarbor. In this paper, we focus on sewers, sewerage, and sewage treatment inManhattanand their effects on theHudson River. It is clear that feedbacks among drinking water quality and quantity, population, public perceptions, regulations, and estuarine water quality exist, although their strength and character have varied over time. Early land uses damaged local water supplies found on ManhattanIsland. New Yorkthen began to exploit the large fresh water resources available to its north, which helped the City to expand …
Can Australia High Speed Rail Overcome It's Bumpy History?, Philip Laird
Can Australia High Speed Rail Overcome It's Bumpy History?, Philip Laird
Faculty of Engineering and Information Sciences - Papers: Part A
The Australian Government has released an "implementation" study for high speed rail (or HSR) on the east coast with a further study to follow. The proposal looks at corridors between Melbourne, Sydney and Brisbane. It includes the option of three-hour travel times between Sydney and Melbourne, with tickets costing around $100. With the projected price of the project starting at around $60 billion, and Australia's chequered history with HSR, it is not unreasonable to ask whether the project will commence. In this case, would Sydney to Newcastle take preference over Sydney to Melbourne?
Seismic History Analysis Of Asymmetrical Adjacent Buildings With Soil-Structure Interaction Consideration, Mehmet Uz, Muhammad N. S Hadi
Seismic History Analysis Of Asymmetrical Adjacent Buildings With Soil-Structure Interaction Consideration, Mehmet Uz, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
The seismic response history analysis of multi-storey asymmetric adjacent buildings with soil-structure interaction (SSI) during impact is investigated in this study. The coupled multi-degree of freedom modal differential equations of motion for the two way asymmetric shear buildings are derived and solved using a step by step solution by the fourth-order Runge-Kutta method with impact and without impact. The SSI forces are modelled in the form of the frequencyindependent soil springs and dashpots. A numerical example of two-way asymmetric four-storey adjacent buildings under the variation of the important SSI system parameters such as the large and small SSI effects is …
Pooling For Horizontal Wells: Can They Teach An Old Dog New Tricks?, Bruce M. Kramer
Pooling For Horizontal Wells: Can They Teach An Old Dog New Tricks?, Bruce M. Kramer
Shale Plays in the Intermountain West: Legal and Policy Issues (November 12)
74 pages.
This paper was originally published as:
Bruce M. Kramer, “Pooling for Horizontal Wells: Can They Teach an Old Dog New Tricks?,” 55 Rocky Mt. Min. L. Inst. 8-1, § 8.05 (2009).
Autonomous Underwater Vehicles As Tools For Deep-Submergence Archaeology, Christopher N. Roman, Ian Roderick Mather
Autonomous Underwater Vehicles As Tools For Deep-Submergence Archaeology, Christopher N. Roman, Ian Roderick Mather
Graduate School of Oceanography Faculty Publications
Marine archaeology beyond the capabilities of scuba divers is a technologically enabled field. The tool suite includes ship-based systems such as towed side-scan sonars and remotely operated vehicles, and more recently free-swimming autonomous underwater vehicles (AUVs). Each of these platforms has various imaging and mapping capabilities appropriate for specific scales and tasks. Broadly speaking, AUVs are becoming effective tools for locating, identifying, and surveying archaeological sites. This paper discusses the role of AUVs in this suite of tools, outlines some specific design criteria necessary to maximize their utility in the field, and presents directions for future developments. Results are presented …
Metallurgy In The Roman Forts Of Scotland: An Archaeological Analysis, Scott S. Stetkiewicz
Metallurgy In The Roman Forts Of Scotland: An Archaeological Analysis, Scott S. Stetkiewicz
Honors Projects
Investigates the presence of metalworking in thirty-seven Roman forts in Scotland during the Flavian, Antonine, and Severan occupations largely through analysis of published documentation concerning relevant archaeological excavations.
History Of Petroleum Engineering At Montana Tech, Leo Heath, Debbie Todd
History Of Petroleum Engineering At Montana Tech, Leo Heath, Debbie Todd
Petroleum Engineering
In January, 2010, the Petroleum Engineering department at Montana Tech moved into a new building, the Natural Resources Building, to start a new chapter in the history of the program on campus. Occupying a new building is a positive event, and it coincides with a surge of student enrollment which is prompted by industry needs and world energy demand. This time of new facilities and growing student numbers leads to the question of what the future has in store for the department. It also leads to reflection about where the department has been in the past. This history is a …
Agenda: The Promise And Peril Of Oil Shale Development, University Of Colorado Boulder. Natural Resources Law Center
Agenda: The Promise And Peril Of Oil Shale Development, University Of Colorado Boulder. Natural Resources Law Center
The Promise and Peril of Oil Shale Development (February 5)
The largest known oil shale deposits in the world are in the Green River Formation, which covers portions of Colorado, Utah, and Wyoming. Fully one-half of the world’s oil shale lies within 150 miles of Grand Junction, Colorado, and about 80% of these reserves are on federal land. Estimates of recoverable reserves in the Green River Formation range from 500 billion to 1.53 trillion barrels. At present consumption rates, this is enough oil to satisfy 100% of U.S. demand for well over 100 years.
Development of oil shale could cause significant impacts on the Colorado Plateau. It would provide for …
Slides: The History Of Oil Shale Development And What It Means For The Future, Patty Limerick
Slides: The History Of Oil Shale Development And What It Means For The Future, Patty Limerick
The Promise and Peril of Oil Shale Development (February 5)
Presenter: Patty Limerick, Center of the American West, University of Colorado at Boulder
35 slides
Hot Ductility Of Nb- And Ti-Bearing Microalloyed Steels And The Inlfuence Of Thermal History, Kristin R. Carpenter, Rian J. Dippenaar, Chris Killmore
Hot Ductility Of Nb- And Ti-Bearing Microalloyed Steels And The Inlfuence Of Thermal History, Kristin R. Carpenter, Rian J. Dippenaar, Chris Killmore
Faculty of Engineering - Papers (Archive)
The hot ductility of Nb, Ti, and Nb-Ti containing steels has been studied under direct-cast conditions. A Gleeble 3500 thermomechanical simulator was used to determine hot ductility over the temperature range 1100 °C to 700 °C at a low strain rate of 7.5 × 10−4 s−1. Tensile samples were cooled at two different cooling rates, 100 °C/min and 200 °C/min, simulating, respectively, thick and thin slab casting processes. Complex thermal patterns designed to simulate the cooling conditions experienced near the surface of a slab during continuous casting were carried out for the Nb-Ti steel. The Nb-Ti steel …
Educating Engineers For The 21st. Century: And Why Some Elements Of History And Philosophy Should Be Incorporated Into The Curriculum, William Grimson, Mike Murphy, Eugene Coyle
Educating Engineers For The 21st. Century: And Why Some Elements Of History And Philosophy Should Be Incorporated Into The Curriculum, William Grimson, Mike Murphy, Eugene Coyle
Conference papers
It has been said that in some respects the Russian composer Igor Stravinsky was a magpie – borrowing styles and ideas from diverse sources for whatever musical project he was working on. The practice of engineering has this same characteristic in that it willingly takes ideas, knowledge and techniques from wherever in pursuit of completing its goal. Further, Engineering is, at least in part, in agreement with Fyodor Dostoevsky – ‘if everything on Earth were rational, nothing would happen’. Against such a background it is proposed that a framework based on both philosophy and the history of engineering, science and …
Changing Maine, 1960-2010: Teaching Guide, Richard Barringer, New England Environmental Finance Center
Changing Maine, 1960-2010: Teaching Guide, Richard Barringer, New England Environmental Finance Center
Maine History & Policy Development
Unlike forty years ago, none of us is now certain what the future holds for Maine – except that it will be different. Maine has been transformed by the events of the recent decades. We have come into a new world, a new time – a new historical era, if you will. This new era, like previous eras in Maine history, will require of us new ways of thinking, new ways of understanding, new ways of organizing ourselves as a community of people, if the values and culture we share and cherish are to endure and flourish.
Touch The Wind, Tim Brady
Touch The Wind, Tim Brady
Publications
Historical background on the development of flight navigational instruments based on discoveries made by Lt. James H. Doolittle.
Divestment Of Federal Water Projects, A. Jack Garner
Divestment Of Federal Water Projects, A. Jack Garner
Dams: Water and Power in the New West (Summer Conference, June 2-4)
21 pages.
Contains references.
The Evolution Of Abdominal Compression In Cardiopulmonary Resuscitation, Charles F. Babbs
The Evolution Of Abdominal Compression In Cardiopulmonary Resuscitation, Charles F. Babbs
Weldon School of Biomedical Engineering Faculty Publications
Objective: To review the history of external abdominal compression as an adjunct to cardiopulmonary resuscitation (CPR), tracking the development of five major themes over the course of the 20th century: 1) augmentation of peripheral resistance by physical means, 2) risk of hepatic injury with abdominal compression, 3) counterpulsation vs. sustained compression, 4) the abdominal pump mechanism, and 5) contact compression techniques. Methods: Literature retrieved from successive MEDLINE English-language searches was reviewed with a special emphasis on work and concepts highlighted by participants at the First Purdue Conference on Interposed Abdominal Compression-CPR, September 1992. Results: External abdominal compression of one form …
Case History Analysis Of Mine Water Pollution In New South Wales, Muttucumaru Sivakumar, S Morton, Raghu N. Singh
Case History Analysis Of Mine Water Pollution In New South Wales, Muttucumaru Sivakumar, S Morton, Raghu N. Singh
Faculty of Engineering - Papers (Archive)
In this paper, problems associated with mine waste water discharge quality in two mines are examined in the environmentally sensitive regions in NSW, Australia. In the first mine the problem of controlling and treating surface run-off from a large coal mine site is duscussed. Then study involved sampling and analysis of mine wastewater during various weather conditions over a period of six months. The samples were analysed for a range of physical and chemical water quality parameters. The study indicated that during minor storms, the mine wastewater treatment system worked effectively, but during a moderate to major storm, the treatment …
Interposed Abdominal Compression-Cpr: A Case Study In Cardiac Arrest Research, Charles F. Babbs
Interposed Abdominal Compression-Cpr: A Case Study In Cardiac Arrest Research, Charles F. Babbs
Weldon School of Biomedical Engineering Faculty Publications
When the abdomen is compressed manually in counterpoint to the rhythm of chest compression, in the performance of interposed abdominal compression-CPR, artificial circulation is approximately doubled in animal experiments and in electronic models of the circulatory system. These studies suggest that external manual compression of the abdominal aorta acts like an intra-aortic balloon pump to increase aortic pressure, whereas external manual compression of the abdominal veins acts to prime the right heart and pulmonary vessels before the next chest compression. As a result, perfusion pressures and flows are increased. Several clinical studies of this technique have shown promising results, including …
Agenda: Water As A Public Resource: Emerging Rights And Obligations, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Water As A Public Resource: Emerging Rights And Obligations, University Of Colorado Boulder. Natural Resources Law Center
Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)
Conference organizers and/or faculty included University of Colorado School of Law professors Lawrence J. MacDonnell, David H. Getches, and Charles F. Wilkinson.
This conference focused on the legal rights associated with a broad range of public uses and interests in water including recreation, fish and wildlife protection, and water quality. Evolving legal areas such as the public trust doctrine, instream flow laws, federal reserved rights, and wetlands protection were discussed.
Water as a Public Resource: Emerging Rights and Obligations considered the extension of the public trust doctrine to areas previously not covered by this concept, as well as developments in …
Agenda: Public Lands Mineral Leasing: Issues And Directions, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Public Lands Mineral Leasing: Issues And Directions, University Of Colorado Boulder. Natural Resources Law Center
Public Lands Mineral Leasing: Issues and Directions (Summer Conference, June 10-11)
University of Colorado School of Law professor Lawrence J. MacDonnell served as the conference organizer and as a member of the faculty.
Federal leasing programs, especially for oil and gas and coal, have been undergoing important changes in recent years. This conference will provide an overview and an update for those involved in public lands mineral development. Significant new issues also will be addressed.
Lands Available For Mineral Leasing, John R. Little, Jr.
Lands Available For Mineral Leasing, John R. Little, Jr.
Public Lands Mineral Leasing: Issues and Directions (Summer Conference, June 10-11)
14 pages.
Contains references.
Agenda: Federal Lands, Laws And Policies And The Development Of Natural Resources: A Short Course, University Of Colorado. School Of Law, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Federal Lands, Laws And Policies And The Development Of Natural Resources: A Short Course, University Of Colorado. School Of Law, University Of Colorado Boulder. Natural Resources Law Center
Federal Lands, Laws and Policies and the Development of Natural Resources: A Short Course (Summer Conference, July 28-August 1)
Even before the [Natural Resources Law] Center was established [in the fall of 1981], the [University of Colorado] School of Law was organizing annual natural resources law summer short courses. To date four programs have been presented:
- July 1980: "Federal Lands, Laws and Policies and the Development of Natural Resources"
- June 1981: "Water Resources Allocation: Laws and Emerging Issues"
- June 1982: "New Sources of Water for Energy Development and Growth: lnterbasin Transfers"
- June 1983: "Groundwater: Allocation, Development and Pollution"
(Reprinted from Resource Law Notes, no. 1, Jan. 1984, at 1.)
Instructors for this conference included University …