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Estimates of SASE power in the short wavelength region
Given a sufficiently bright electron beam, the self-amplified-spontaneous emission (SASE) can provide gigawatts of short wavelength coherent radiation. The advantages of SASE approach are that is requires neither optical cavity nor an imput seed laser. In this note, we estimate the peak power performance of SASE for wavelengths shorter than 1000 {Angstrom}. At each wavelength, we calculate the saturated power from a uniform parameter undulator and the enhanced power from a tapered undulator. The method described here is an adaptation of that discussed by L.H. Yu, who discussed the harmonic generation scheme with seeded laser, to the case of SASE.
Date:
March 1, 1992
Creator:
Kim, Kwang-Je.
Object Type:
Article
System:
The UNT Digital Library
The demand-side management program development process: A utility perspective
This report describes an aspect of DSM that has received little attention, namely, how utilities develop DSM programs. The selection of utilities to study purposely was biased in favor of those with reputations for being experienced DSM program developers so as to optimize the chances to obtain detailed information. The DSM planning process is affected by organizational factors and external influences: (1) the location of the demand-side planning department within the utility; (2) the demand-side planning group's functional responsibilities; (3) upper management participation in the DSM program development process; and (4) the organizational relationship between (or, separation of) supply-side and demand-side planning. Organizational factors reflect utilities' views of DSM programs and thus can affect the adoption of a technology- or customer-oriented approach. Despite repeated claims of the uniqueness of the demand- side planning process and its resistance to standardization, two general approaches to program development were discerned, namely technology- or customer-orientation. Although utilities consider customer related and technological factors in their DSM program development process, utilities can be differentiated by their emphasis on one or the other approach. 25 refs.
Date:
March 1, 1992
Creator:
Wolfe, A.K. (Oak Ridge National Lab., TN (United States)) & Yourstone, N.E. (Yourstone (Evelin), Albuquerque, NM (United States))
Object Type:
Report
System:
The UNT Digital Library
Geothermal waste treatment biotechnology: Progress and advantages to the utilities
Development of biotechnology for treatment of geothermal residual waste is aimed at the application of low-cost biochemical processes for the surface treatment and disposal of residual geothermal sludges. These processes, in addition to the lowering of disposal cost, are designed to be environmentally acceptable. Recent studies at Brookhaven National Laboratory (BNL) have shown that optimization of several process variables results in fast rates (<24h) of metal removal from residual sludges at acidic pH ({minus}1--2). Optimization of the process variables also enables the removal of radioactive isotopes. In addition, the aqueous phase produced during the bioprocessing which contains solubilized metals can be further treated in a manner which precipitates out the metals and renders the aqueous effluent toxic metal free. In this paper, the various process options will be discussed in terms of biotreatment variables. Chemical composition before and after biotreatment will also be discussed in terms of long-range effects, quality assurance and potential disposal costs.
Date:
March 1, 1992
Creator:
Premuzic, E.T.; Lin, M.S. & Jin, J.
Object Type:
Article
System:
The UNT Digital Library
Costs and benefits of automotive fuel economy improvement: A partial analysis
This paper is an exercise in estimating the costs and benefits of technology-based fuel economy improvements for automobiles and light trucks. Benefits quantified include vehicle cots, fuel savings, consumer's surplus effects, the effect of reduced weight on vehicle safety, impacts on emissions of CO{sub 2} and criteria pollutants, world oil market and energy security benefits, and the transfer of wealth from US consumes to oil producers. A vehicle stock model is used to capture sales, scrappage, and vehicle use effects under three fuel price scenarios. Three alternative fuel economy levels for 2001 are considered, ranging from 32.9 to 36.5 MPG for cars and 24.2 to 27.5 MPG for light trucks. Fuel economy improvements of this size are probably cost-effective. The size of the benefit, and whether there is a benefit, strongly depends on the financial costs of fuel economy improvement and judgments about the values of energy security, emissions, safety, etc. Three sets of values for eight parameters are used to define the sensitivity of costs and benefits to key assumptions. The net present social value (1989$) of costs and benefits ranges from a cost of $11 billion to a benefit of $286 billion. The critical parameters being the discount …
Date:
March 1, 1992
Creator:
Greene, D.L. (Oak Ridge National Lab., TN (United States)) & Duleep, K.G. (Energy and Environmental Analysis, Inc., Arlington, VA (United States))
Object Type:
Report
System:
The UNT Digital Library
(NLUF user-application of a high-density gas laser target to the physics x-ray lasers and coronal plasmas)
None
Date:
March 13, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Lecture notes for criticality safety
These lecture notes for criticality safety are prepared for the training of Department of Energy supervisory, project management, and administrative staff. Technical training and basic mathematics are assumed. The notes are designed for a two-day course, taught by two lecturers. Video tapes may be used at the options of the instructors. The notes provide all the materials that are necessary but outside reading will assist in the fullest understanding. The course begins with a nuclear physics overview. The reader is led from the macroscopic world into the microscopic world of atoms and the elementary particles that constitute atoms. The particles, their masses and sizes and properties associated with radioactive decay and fission are introduced along with Einstein's mass-energy equivalence. Radioactive decay, nuclear reactions, radiation penetration, shielding and health-effects are discussed to understand protection in case of a criticality accident. Fission, the fission products, particles and energy released are presented to appreciate the dangers of criticality. Nuclear cross sections are introduced to understand the effectiveness of slow neutrons to produce fission. Chain reactors are presented as an economy; effective use of the neutrons from fission leads to more fission resulting in a power reactor or a criticality excursion. The six-factor formula …
Date:
March 1, 1992
Creator:
Fullwood, R.
Object Type:
Report
System:
The UNT Digital Library
(Environmental investigation of ground water contamination at Wright-Patterson Air Force Base, Ohio)
An environmental investigation of ground water conditions has been undertaken at Wright-Patterson Air Force Base (WPAFB), Ohio to obtain data to assist in the evaluation of a potential removal action to prevent, to the extent practicable, migration of the contaminated ground water across Base boundaries. Field investigations were limited to the central section of the southwestern boundary of Area C and the Springfield Pike boundary of Area B. Further, the study was limited to a maximum depth of 150 feet below grade. Three primary activities of the field investigation were: (1) installation of 22 monitoring wells, (2) collection and analysis of ground water from 71 locations, (3) measurement of ground water elevations at 69 locations. Volatile organic compounds including trichloroethylene, perchloroethylene, and/or vinyl chloride were detected in concentrations exceeding Maximum Contaminant Levels (MCL) at three locations within the Area C investigation area. Ground water at the Springfield Pike boundary of Area B occurs in two primary units, separated by a thicker-than-expected clay layers. One well within Area B was determined to exceed the MCL for trichloroethylene.
Date:
March 1, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Least cost planning from a customer's perspective
In this paper, I offer some thoughts about least cost planning, not from the perspective of the regulator or utility, but from the perspective of a residential customer. The problem that I address is, as a homeowner in northern Virginia, I am about to make a long term fuel choice for my household, where the options include, natural gas, electricity and fuel oil. An additional choice is the energy efficiency capital investment in my home that could decrease my monthly fuel costs. My decision process, hopefully as a rational consumer, offers implications about the efficiency of various services provided by all three fuel suppliers, including the local natural gas distribution companies (LDC).
Date:
March 2, 1992
Creator:
Sutherland, R.J.
Object Type:
Article
System:
The UNT Digital Library
Research and development of methods and tools for achieving and maintaining consensus processes in the face of change within and among government oversight agencies: Volume 1
This progress report summarizes our research activities under our consensus grant. In year four of the grant, we continued to capitalize on and benefit from historical events which drove our early emphasis on group process studies. Following our work on various procedures for bringing together groups such as the State and Tribal Government Working Group and the Stakeholders' Forum (both of which provide input to the Five-Year Waste Plan), we continue to observe these groups and collect data. We also began a configuration study involving the complex modeling of DOE's Office of Environmental Restoration and Waste Management (EM). Related to group process studies is the issue of the information requirements for individuals making decisions in consensus groups. Our information studies examined the requirements for decision-related information, frameworks for such information, and the effectiveness of information portrayed for decision making. However, we were able not only to continue studying consensus groups in action and related information issues, but also to focus considerable attention on the fundamental side of our research. The fundamental or basic research conducted in year four included: (1) expanding our literature database; (2) beginning the writing of the literature review summary document and the consensus guide; (3) developing …
Date:
March 1, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Investigation of Celotex trademark charring depths in the DT-18 shipping container
Celotex {trademark}, the insulating material used between the outer and inner containers of the DT-18 shipping package, undergoes decomposition, combustion, or both when heated to temperatures exceeding 150{degrees}C. Several DT-18 packages that had previously undergone hypothetical thermal accident testing were opened and Celotex {trademark} charring depths ranging from {1/2} to 1 {1/2} in. were recorded. The majority of char depth data taken was between 3/4 and 1 {1/4} in. One-dimensional HEATING 7.1 models of the DT-18 package were developed. HEATING predicts charring depths of 1 to 1 1/8 in., which are in good agreement with measured values. Both experimental and analytical data indicate that charring is fairly uniform over the DT-18 package. 7 refs.
Date:
March 1, 1992
Creator:
Anderson, J.C.
Object Type:
Report
System:
The UNT Digital Library
[Letter from Jack Davis and Bill McCarter to Chad Woolery, March 3, 1993]
Photocopy of a letter from Jack Davis and Bill McCarter, co-directors of North Texas Institute for Educators on the Visual Arts, to Chad Woolery, Deputy Superintendent for Dallas ISD. In regards of Janice Wiggins, Visual Arts Special, Dallas Public Schools and her contract with North Texas Institute for Educators on the Visual Arts, hoping that she could be under an extended contract through June 14 - 25, 1993 to finish work she has started with three of her art specialists in planning the 1993 Dallas Institute. The Dallas Institute is a complex staff development experience for classroom teachers and art specialists in the district. Included in the letter is a detailed list of Wiggin's responsibility and her expected goals. At the end of the letter Davis and McCarter are excited to consider an interactive television connection with Dallas schools on June 21, 1993 and that Dr. Wilson, cross site evaluator for the Getty Center will be observing the distance learning project.
Date:
March 3, 1993
Creator:
Davis, Donald Jack & McCarter, William
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Bill McCarter and Jack Davis to Don R. Roberts, March 26, 1991]
Photocopy of a letter from Bill McCarter and Jack Davis, co-directors of North Texas Institute for Educators on the Visual Arts, to Don R. Roberts, Superintendent for Forth Worth ISD. In discussion of Roberts supportive efforts to implement discipline-art based education, DBAE in Fort Worth. NTIEVA invites Roberts to a reception and dinner on June 29th, to thank him and other retiring superintendents from their consortium districts.
Date:
March 26, 1991
Creator:
Davis, Donald Jack & McCarter, William
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Julie Abel to Jack Davis, March 27, 1997]
Photocopy of a letter from Julie Abel, Program Associate, Getty Center for Education in the Arts, to Jack Davis, co-director of North Texas Institute for Educators on the Visual Arts. In discussion about the remaining funds from the Getty Center Education Institute grant to the RIG consortium be awarded to the North Texas Institute for Educators on the Visual Arts program. Abel makes a list of issues that need to be discussed and would like to meet up with Davis to discuss them.
Date:
March 27, 1997
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Vicki Rosenberg to Jack Davis and Bill McCarter, March 3, 1993]
Photocopy of a letter from Vicki Rosenberg, Program Officer of the Getty Center, to Jack Davis and Bill McCarter, co-directors of North Texas Institute for Educators on the Visual Arts. In regards to having to cancel a planned site visit for April due to scheduling conflict with the Trust to work on the FY94 budget. Rosenberg writes that she'll make a planned site visit to the Fort Worth institute sometime in the summer and will let them know by May when those dates will be.
Date:
March 3, 1993
Creator:
Rosenberg, Vicki
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Cassandra Broadus to Marilyn Ingram, March 6, 1991]
Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Marilyn Ingram, Kimbell Art Museum. In regards to the Art-O-Gram art education newspaper series and that the Kimbell will be featured on specific days as followed, March 19, May 7, June 11 and June 18. Broadus also requests to include works from the Kimbell in another article or two for the summer months.
Date:
March 6, 1991
Creator:
Broadus, Cassandra
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Jack Davis, Bill McCarter and Nancy Reynolds to Gert K. Peck, March 10, 1994]
Photocopy of a letter from Jack Davis, Bill McCarter and Nancy Reynolds, North Texas Institute for Educators on the Visual Arts, to Gert K. Peck, Superintendent for Anthony ISD. Inviting Peck to attend the "Learning through Art: The Integration of Art Across the Curriculum" at El Paso ISD Professional Development Center, on March 31, 1994. The seminar is being presented by North Texas Institute for Educators on the Visual Arts, and will address the correlation between art and Texas Assessment of Academic Skills, TAAS. The presentation will also focus on the discipline-based art education, DBAE. Davis, McCarter and Reynolds hope Peck can attend.
Date:
March 10, 1994
Creator:
Davis, Donald Jack; McCarter, William & Reynolds, Nancy
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Jack Davis to David Kesterson, March 21, 1994]
Photocopy of a letter from Jack Davis, Dean of the School of Visual Arts, to David Kesterson, Vice Provost for the University of North Texas. To request more space for North Texas Institute for Educators on the Visual Arts by wanting access to Rooms 305 & 303 B in Marquis Hall, UNT. Davis understands that the need for space is great, but NTIEVA has proven themselves to be a viable operation with consistent external funding for its program, along with a major outreach for UNT. Davis writes that in the last five years the Institute has generated more than 1,400,000 in grant funds and has only grown more steadily with each passing year. Thus with the expansion of the program, Davis requests more space to continue their operations as their previous space has become overly crowded.
Date:
March 21, 1994
Creator:
Davis, Donald Jack
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Nancy Reynolds to Gail Davitt, March 11, 1992]
Photocopy of a letter from Nancy Reynolds, Project Coordiantor of North Texas Institute for Educators on the Visual Arts, to Gail Davitt, Dallas Museum of Art. To discuss the teacher packet for the "Africa Explores" exhibit that Davitt has sent to Reynolds. As well as discuss the upcoming summer institute and other activities that Davitt will find informative. Enclosed in the letter is a schedule for the DMA summer institute that shows when the districts will be visiting the museum. The rest of the letter goes into details about how large the parties from each district will be and details about what the events should cover.
Date:
March 11, 1992
Creator:
Reynolds, Nancy
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Cassandra Broadus to Anne Sears, March 7 1991]
Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Anne Sears, teacher at T.D. Marshall Learning Center. Broadus has given Sears lesson plans from Kay Alexander's Learning to Look and Create: The SPECTRA Series. Broadus writes that the art curriculum offers numerous ideas for correlating activities with concepts and addresses interdisciplinary curriculum ideas, highlighting some important introductory lesson plans that Broadus believes will be useful for Sears. Lesson plans are missing from letter.
Date:
March 7, 1991
Creator:
Broadus, Cassandra
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Leilani Lattin Duke to her Colleagues, March 1995]
Photocopy of a letter from Leilani Lattin Duke, Director for the Getty Center for Education in the Arts, to her colleagues. In regards to an invitation to a multi-year project sponsored by the Getty Center and the College Board, "The Role of the Arts in Unifying the High School Curriculum." The goal of the project is to expand the scope of school reform by demonstrating how the arts can strengthen the high school curriculum. Duke has provided a Request for Proposal, RFP, and encourages them to share the RFP with the schools who will have an interest with the program and to send their interest letter by March 20, 1995 and their submission by May 31, 1995.
Date:
March 1995
Creator:
Duke, Leilani Lattin
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Cassandra Broadus to Melanie Wright, March 6, 1991]
Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Melanie Wright, Dallas Museum of Art. Broadus requests the use of two or three permanent pieces from the DMA to use in "Art-O-Gram" and "Class Acts" an art education newspaper series in the Fort Worth Star Telegram. The articles are designed for children to give them something more than just an art project but to talk about and view work critically and develop better communication skills.
Date:
March 6, 1991
Creator:
Broadus, Cassandra
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Jack Davis and Bill McCarter to John Clark, March 9, 1993]
Photocopy of a letter from Jack Davis and Bill McCarter, co-directors of North Texas Institute for Educators on the Visual Arts, to John Clark, editor of Spirit Magazine, Southwest Airlines. In discussion of the articles in Spirit that focus on activities in the area that Southwest Airline serves and they thought that Clark would be interested in the discipline-based art education, DBAE implementation project. Davis and McCarter go into further details about what North Texas Institute for Educators on the Visual Arts does for educators and the districts in the Texas state as well as where their funding and grants come from. Davis and McCarter write about the success their institute is having with the children and how their reading and writing have improved with the visual art program. Attached to the letter for Clark, they've added more information regarding their program and hoping Clark will be able to feature an article about it.
Date:
March 9, 1993
Creator:
Davis, Donald Jack & McCarter, William
Object Type:
Letter
System:
The UNT Digital Library
Development of improved cathodes for solid oxide fuel cells
The University of Missouri-Rolla conducted a 17 month research program focused on the development and evaluation of improved cathode materials for solid oxide fuel cells (SOFC). The objectives of this program were: (1) the development of cathode materials of improved stability in reducing environments; and (2) the development of cathode materials with improved electrical conductivity. The program was successful in identifying some potential candidate materials: Air sinterable (La,Ca)(Cr,Co)O{sub 3} compositions were developed and found to be more stable than La{sub .8}Sr{sub .2}MnO{sub 3} towards reduction. Their conductivity at 1000{degrees}C ranged between 30 to 60 S/cm. Compositions within the (Y,Ca)(Cr,Co,Mn)O{sub 3} system were developed and found to have higher electrical conductivity than La{sub .8}Sr{sub .2}MnO{sub 3} and preliminary results suggest that their stability towards reduction is superior.
Date:
March 1, 1991
Creator:
Anderson, H.U.
Object Type:
Report
System:
The UNT Digital Library
A survey of air flow models for multizone structures
Air flow models are used to simulate the rates of incoming and outgoing air flows for a building with known leakage under given weather and shielding conditions. Additional information about the flow paths and air-mass flows inside the building can only by using multizone air flow models. In order to obtain more information on multizone air flow models, a literature review was performed in 1984. A second literature review and a questionnaire survey performed in 1989, revealed the existence of 50 multizone air flow models, all developed since 1966, two of which are still under development. All these programs use similar flow equations for crack flow but differ in the versatility to describe the full range of flow phenomena and the algorithm provided for solving the set of nonlinear equations. This literature review was found that newer models are able to describe and simulate the ventilation systems and interrelation of mechanical and natural ventilation. 27 refs., 2 figs., 1 tab.
Date:
March 1, 1991
Creator:
Feustel, H.E. & Dieris, J.
Object Type:
Report
System:
The UNT Digital Library