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2-D time evolution of T/sub e/ during sawtooth crash based on fast ECE (electron cyclotron emission) measurements on TFTR
Electron cyclotron emission measurements taken at 20 locations in the horizontal midplane during a sawtooth crash have been analysed based on the assumption of fast rigid rotation of the plasma. Due to this fast rotation (approx.100..mu..sec), which remains fairly constant throughout the sawtooth crash, we have been able to make time-to-space reconstructions of half the poloidal plane using points which are separated in time by not more than 40..mu..sec. The existence of a temperature flattening in the precursor phase, which we interpret as an m = 1 temperature island, is clearly demonstrated, and its location and width agree well with local emissivity measurements from soft x-ray tomography viewing the same poloidal plane. The rotating temperature island in the precursor phase, the outward movement of the region of high T/sub c/ during the crash phase, and the shape of T/sub e/ during the crash phase, and the shape of T/sub e/ distribution after the crash during the successor phase have all been documented in a time sequence of color contours. 4 refs., 10 figs.
Date:
December 1, 1988
Creator:
Kuo-Petravic, G.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 17, No. 12, Ed. 1 Friday, December 2, 1988
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
December 2, 1988
Creator:
Pierce, James
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 17, No. 13, Ed. 1 Friday, December 9, 1988
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
December 9, 1988
Creator:
Pierce, James
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 17, No. 14, Ed. 1 Friday, December 16, 1988
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
December 16, 1988
Creator:
Pierce, James
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Accumulated surface damage on ZnS crystals produced by closely spaced pairs of picosecond laser pulses
Excitation of a transparent ZnS crystal by repetitive picosecond dye laser pulses causes an accumulated surface modification leading to optical damage. The onset of the damage is detected by an abrupt increase in the emission of neutral Zn (and possibly S/sub 2/) from the surface. Comparison of the neutral emission thresholds with pulse-pair and single-pulse excitation shows that linear absorption is the dominant laser-surface interaction. In general, this measurement technique shows considerable promise for investigating the possible influence of nonlinear absorption or excitation processes on damage mechanisms. The data suggest that heating of small absorbing regions produces the surface modification that leads to the observed surface ablation. The nature of the damage observed at fluences above the threshold suggests that it is caused by heating of a relatively large (/approximately/10 - 100 ..mu..m) surface region that has been modified by the accumulation pulses. 3 refs., 5 figs.
Date:
December 1, 1988
Creator:
Chase, L. L. & Lee, H. W. H.
Object Type:
Article
System:
The UNT Digital Library
Acoustic microscopy with mixed-mode transducers
The new amplitude-phase acoustic microscope is versatile; it operates in a wide frequency range 1--200 MHz, with selection of longitudinal, shear, and mixed modes. This enables it to be used in many NDE applications for different kinds of materials. Besides the application examples presented in this paper (bulk defect imaging of lossy materials or at deep locations; leads of IC chip in epoxy package; amplitude images of surface crack on Si nitride ball bearing; thin Au film on quartz), this system can also be applied for residual stress and anisotropy mapping with high accuracy and good spatial resolution. 7 refs, 6 figs.
Date:
December 31, 1988
Creator:
Chou, C. H.; Parent, P. & Khuri-Yakub, B. T.
Object Type:
Article
System:
The UNT Digital Library
Adaptive significance of root grafting in trees
Root grafting has long been observed in forest trees but the adaptive significance of this trait has not been fully explained. Various authors have proposed that root grafting between trees contributes to mechanical support by linking adjacent root systems. Keeley proposes that this trait would be of greatest advantage in swamps where soils provide poor mechanical support. He provides as evidence a greenhouse study of Nyssa sylvatica Marsh in which seedlings of swamp provenance formed between-individual root grafts more frequently than upland provenance seedlings. In agreement with this within-species study, Keeley observed that arid zone species rarely exhibit grafts. Keeley also demonstrated that vines graft less commonly than trees, and herbs never do. Since the need for mechanical support coincides with this trend, these data seem to support his model. In this paper, the authors explore the mechanisms and ecological significance of root grafting, leading to predictions of root grafting incidence. Some observations support and some contradict the mechanical support hypothesis.
Date:
December 31, 1988
Creator:
Loehle, C. & Jones, R.
Object Type:
Report
System:
The UNT Digital Library
Advanced alternate planar geometry solid oxide fuel cells. Third interim quarterly technical progress report, July 1, 1988--September 30, 1988
The following Ceramatec tasks are reported: electrolyte development and fabrication, edge seal development/fabrication, electrode, and interconnector. The following IGT tasks are reported: cell design analysis, and program liaison and test facility preparation.
Date:
December 31, 1988
Creator:
Prouse, D.; Elangovan, S.; Khandkar, A.; Donelson, R. & Marianowski, L.
Object Type:
Report
System:
The UNT Digital Library
Advanced energy design and operation technologies research: Recommendations for a US Department of Energy multiyear program plan
This document describes recommendations for a multiyear plan developed for the US Department of Energy (DOE) as part of the Advanced Energy Design and Operation Technologies (AEDOT) project. The plan is an outgrowth of earlier planning activities conducted for DOE as part of design process research under the Building System Integration Program (BSIP). The proposed research will produce intelligent computer-based design and operation technologies for commercial buildings. In this document, the concept is explained, the need for these new computer-based environments is discussed, the benefits are described, and a plan for developing the AEDOT technologies is presented for the 9-year period beginning FY 1989. 45 refs., 37 figs., 9 tabs.
Date:
December 1, 1988
Creator:
Brambley, M. R.; Crawley, D. B.; Hostetler, D. D.; Stratton, R. C.; Addison, M. S.; Deringer, J. J. et al.
Object Type:
Report
System:
The UNT Digital Library
Advanced Water-Cooled Phosphoric Acid Fuel Cell Development. Quarterly technical progress report No. 5, July--September 1988
The initial conceptual design configuration was completed. Baseline on-site electrodes were tested at electric utility conditions in 2 x 2 inch cells. GSB-18P cathodes were fabricated. Design of small area development stack was initiated and long lead time items ordered. Molded cooler thermal cycling tests were initiated. Equipment to evaluate alternative manifold coating processes and materials were procured.
Date:
December 31, 1988
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Aesthetic Justifications for Music Education: a Theoretical Examination of Their Usefulness
Justifications for music education have been studied only by examining historical trends in statements of aesthetic versus utilitarian values, and not from the perspective of evaluating the justifications' usefulness. A number of prominent writers in the music education field, while supporting aesthetic values as important for music education, have expressed doubts about the effectiveness of aesthetic justifications when used for convincing outsiders of the importance of music in the public school curriculum. These doubts, along with a preponderance of aesthetic justifications in the recent music education literature, led to the present study, which conducted a theoretical examination of the usefulness of aesthetic justifications for music education. The study addressed three research problems, namely: (1) the attitudes of the clientele groups of the public schools in terms of their values toward music as a subject in the schools; (2) the attitudes of the groups within the music education profession in terms of their values for music in the public schools and for the profession itself; and 3) the likelihood that justifications based upon "aesthetics" as a system of values would be accepted by the groups both inside arid outside the music education profession. A philosophical-sociological perspective was chosen for the theoretical …
Date:
December 1988
Creator:
Paul, Stephen John
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Age, Volume 9, Number 12, December 1988
Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.
Date:
December 1988
Creator:
Wallisville Heritage Park (Organization)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
AIDS Update, Volume 3, Number 12, December 1988
Monthly newsletter describing news and events related to the AIDS Resource Center in Dallas, Texas as well as articles, letters, advice columns, and advertisements of interest to subscribers.
Date:
December 1988
Creator:
AIDS Resource Center (Dallas, Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Air Quality and Emissions Report: 1988
Report on Texas air quality, including information on automobile fuel programs, sky visibility, acid rain, and other air pollutants.
Date:
December 1988
Creator:
Texas Air Control Board
Object Type:
Report
System:
The Portal to Texas History
Alaskan Native Social Integration and Academic Achievement
The variables communication skills, state anxiety, communication apprehension, and level of integration are studied in relation to the assimilation of Alaskan Natives into a western-culture university. Specifically, the differences in communication skills between the two cultures and their effects on course grades are addressed. Results of the statistical analyses (ANOVA, MANOVA, discriminant function analysis, multiple regression) were not significant, most likely due to the small Alaskan Native sample size. The most significant relationship appeared between situational communication apprehension and the ethnicity of the interaction partner. Other results were directional, indicating that variables may be related to assimilation of Native students into a western university environment. Further research and replication is warranted, using an adequate sample of Alaskan Natives.
Date:
December 1988
Creator:
Strohmaier, Mahla
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 113, No. 25, Ed. 1 Thursday, December 1, 1988
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
December 1, 1988
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 113, No. 26, Ed. 1 Thursday, December 8, 1988
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
December 8, 1988
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 113, No. 27, Ed. 1 Thursday, December 15, 1988
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
December 15, 1988
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 113, No. 28, Ed. 1 Thursday, December 22, 1988
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
December 22, 1988
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 113, No. 29, Ed. 1 Thursday, December 29, 1988
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
December 29, 1988
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
[Aldridge-Smith House]
Photograph of the Aldridge-Smith House in East Columbia, Texas.
Date:
December 1, 1988
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
The Allen American (Allen, Tex.), Vol. 18, No. 160, Ed. 1 Sunday, December 4, 1988
Semiweekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date:
December 4, 1988
Creator:
Warnken, Mark
Object Type:
Newspaper
System:
The Portal to Texas History
The Allen American (Allen, Tex.), Vol. 18, No. 161, Ed. 1 Wednesday, December 7, 1988
Semiweekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date:
December 7, 1988
Creator:
Warnken, Mark
Object Type:
Newspaper
System:
The Portal to Texas History
The Allen American (Allen, Tex.), Vol. 18, No. 162, Ed. 1 Sunday, December 11, 1988
Semiweekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date:
December 11, 1988
Creator:
Warnken, Mark
Object Type:
Newspaper
System:
The Portal to Texas History