Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

1998

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 1381 - 1410 of 6048

Full-Text Articles in Entire DC Network

Search For Sleptons In E+E- Collisions At Centre-Of-Mass Energies Up To 184 Gev Aleph Collaboration, R. Barate, Manoj Thulasidas Aug 1998

Search For Sleptons In E+E- Collisions At Centre-Of-Mass Energies Up To 184 Gev Aleph Collaboration, R. Barate, Manoj Thulasidas

Research Collection School Of Computing and Information Systems

The data collected by the ALEPH experiment at LEP at centre–of–mass energies around 183 GeV are analysed to search for sleptons, the partners of leptons in supersymmetric theories. The previously published search for acoplanar leptons and missing energy has been updated. New searches have been developed to cover a wider range of slepton signals. These include single electrons, acoplanar leptons accompanied by two photons plus missing energy as well as particles with lifetime. No evidence for the production of any such particles is found. Slepton mass limits are reported within gravity mediated and gauge mediated SUSY breaking scenarios.

Go to article

The Forward-Backward Asymmetry For Charm Quarks At The Z, R. Barate, Manoj Thulasidas Aug 1998

The Forward-Backward Asymmetry For Charm Quarks At The Z, R. Barate, Manoj Thulasidas

Research Collection School Of Computing and Information Systems

From 1.4 million hadronic Z decays collected by the ALEPH detector at LEP, an enriched sample of Z → cc̄ events is extracted by requiring the presence of a high momentum D∗±. The charm quark forward-backward charge asymmetry at the Z pole is measured to be AFB0.c = (8.0 ± 2.4) % corresponding to an effective electroweak mixing angle of sin2θWeff = 0.2302 ± 0.0054.

Go to article

Development Of The Curriculum For Use In A Primary Multi-Age Classroom Using A Curriculum Map, Rae Anne Besser Hansberry Aug 1998

Development Of The Curriculum For Use In A Primary Multi-Age Classroom Using A Curriculum Map, Rae Anne Besser Hansberry

Masters Theses

Curriculum maps for multi-age classes are difficult to organize. This paper explores some of the ways that curricula has been organized in the past and a method developed by Heidi Hayes Jacobs . This method differs from other mapping strategies because it starts with the state standards and benchmarks and fits the curricula into this framework. This paper also explores the concept of multi-age groupings to insure a better understanding of the history of grouping students in education, the philosophy behind multi-age, as well as some of the benefits and detractors of this concept. The process for developing a curriculum …

Go to article

Water Flow Through Temperate Glaciers, Andrew G. Fountain, Joseph S. Walder Aug 1998

Water Flow Through Temperate Glaciers, Andrew G. Fountain, Joseph S. Walder

Geography Faculty Publications and Presentations

Understanding water movement through a glacier is fundamental to several critical issues in glaciology, including glacier dynamics, glacier-induced floods, and the prediction of runoff from glacierized drainage basins. To this end we have synthesized a conceptual model of water movement through a temperate glacier from the surface to the outlet stream. Processes that regulate the rate and distribution of water input at the glacier surface and that regulate water movement from the surface to the bed play important but commonly neglected roles in glacier hydrology. Where a glacier is covered by a layer of porous, permeable firn (the accumulation zone), …

Go to article

Hot White Dwarfs In The Extreme ‐ Ultraviolet Explorer Survey. Iv. Da White Dwarfs With Bright Companions, Stephane Vennes, Damian J. Christian, John R. Thorstensen Aug 1998

Hot White Dwarfs In The Extreme ‐ Ultraviolet Explorer Survey. Iv. Da White Dwarfs With Bright Companions, Stephane Vennes, Damian J. Christian, John R. Thorstensen

Dartmouth Scholarship

We present an analysis of optical, ultraviolet, and X-ray spectral properties of a sample of 13 hot hydrogen-rich (DA) white dwarfs, each paired with a luminous unresolved companion. Using low-dispersion International Ultraviolet Explorer spectra, ROSAT photometry, and Extreme-Ultraviolet Explorer photometry and spectroscopy, we estimate the effective temperature, mass, and distance of the white dwarfs. Additionally, we examine the question of their atmospheric composition. We establish orbital properties for most binaries by means of high-dispersion optical spectroscopy obtained with the Hamilton echelle spectrograph at Lick Observatory; the same data help uncover evidence of activity in some of the secondary …

Go to article

Mechanisms Of Thermal Balance In Flying Centris Pallida (Hymenoptera: Anthophoridae), Stephen P. Roberts, Jon F. Harrison, Neil F. Hadley Aug 1998

Mechanisms Of Thermal Balance In Flying Centris Pallida (Hymenoptera: Anthophoridae), Stephen P. Roberts, Jon F. Harrison, Neil F. Hadley

Biological Sciences Faculty Research & Creative Works

Thermoregulation of the Thorax is Critical for Bees and Other Endothermic Insects to Achieve High Rates of Flight Muscle Power Production. However, the Mechanisms Allowing Insects to Regulate Thorax Temperatures during Flight Are Not Well Understood. to Test Whether Variations in Metabolic Heat Production, Evaporation or Heat Transfer from the Thorax to the Abdomen Contribute to the Maintenance of Stable Body Temperatures during Flight in the Bee Centris Pallida, We Measured CO2 Production, Water Vapor Loss, Wingbeat Frequency and Body Segment Temperatures during Flight at Varying Air Temperatures (T(A)). While Hovering in the Field and While Flying in the Respirometer, …

Go to article

Multi-Selectible Continua, Joseph Edward Mcparland Aug 1998

Multi-Selectible Continua, Joseph Edward Mcparland

Graduate Theses, Dissertations, and Problem Reports (ETD)

A particular coexistence of multiple continuous selections (a "multi-selection") within a function space for a non-degenerate metric continuum X is investigated for the hyperspaces 2X and C(X). It is demonstrated that (i) multi-selections do not exist for 2X and that (ii) the existence of a multi-selection for C(X) is equivalent to X being a dendrite.

Go to article

Searching For Periods Of Volatility: A Study Of The Behavior Of Volatility In Thai Stocks, Theodore Bos, David K. Ding, Thomas A. Fetherston Aug 1998

Searching For Periods Of Volatility: A Study Of The Behavior Of Volatility In Thai Stocks, Theodore Bos, David K. Ding, Thomas A. Fetherston

Research Collection Lee Kong Chian School Of Business

This paper improves the precision of the useful new procedure of Inclán and Tiao (1994) that estimates variance shift points in a time series. It accomplishes this by incorporating the evidence of Bos and Fetherston (1992) that the linear Brown, Durbin, and Evans (Brown et al., 1975) critical CUSUM of squares boundaries [used by Inclán and Tiao] produce an understatement of instability at the data end points. This is solved by Tanizaki (1995) which, like Bos and Fetherston (1992) and Bos and Fetherston (1995), uses the fact that the CUSUM of squares statistic follows a beta distribution. This study uses …

Go to article

Synthetic Files: Enabling Low-Latency File I/O For Qos-Adaptive Applications, Dylan Mcnamee, Dan Revel, Calton Pu, David Steere, Jonathan Walpole Aug 1998

Synthetic Files: Enabling Low-Latency File I/O For Qos-Adaptive Applications, Dylan Mcnamee, Dan Revel, Calton Pu, David Steere, Jonathan Walpole

Computer Science Faculty Publications and Presentations

Files are a tried and true operating system abstraction. They present a simple byte-stream model of I/O that has proven intuitive for application programmers and efficient for operating system builders. However, current file systems do not provide good support for adaptive continuous media (CM) applications - an increasingly important class of applications that exhibit complex access patterns and are particularly sensitive to variations in I/O performance. To address these problems we propose synthetic files. Synthetic files are specialized views of underlying regular files, and convert complex file access patterns into simple sequential synthetic file access patterns. Synthetic file construction can …

Go to article

Library Newsletter, Volume 4, No. 4, July 31, 1998, Deborah Boran Henry Jul 1998

Library Newsletter, Volume 4, No. 4, July 31, 1998, Deborah Boran Henry

Nelson Poynter Memorial Library Newsletters

The July 31, 1998 issue of a newsletter for faculty and staff from the University of South Florida St. Petersburg's Nelson Poynter Memorial Library.

Go to article

The Three-Species Monomer-Monomer Model In The Reaction-Controlled Limit, Kevin E. Bassler, Dana A. Browne Jul 1998

The Three-Species Monomer-Monomer Model In The Reaction-Controlled Limit, Kevin E. Bassler, Dana A. Browne

Faculty Publications

We study the one-dimensional three-species monomer-monomer reaction model in the reaction-controlled limit using mean-field theory and dynamic Monte Carlo simulations. The phase diagram consists of a reactive steady state bordered by three equivalent adsorbing phases where the surface is saturated with one monomer species. The transitions from the reactive phase are all continuous, while the transitions between adsorbing phases are first order. Bicritical points occur where the reactive phase simultaneously meets two adsorbing phases. The transitions from the reactive to an adsorbing phase show directed percolation critical behaviour, while the universal behaviour at the bicritical points is in the even …

Go to article

School Deans, Department Chairpersons, And Program Directors 1998-1999, Saint Mary's College Of California Jul 1998

School Deans, Department Chairpersons, And Program Directors 1998-1999, Saint Mary's College Of California

Chairs and Program Directors lists

No abstract provided.

Go to article

Western News, July 30, 1998, Western Michigan University Jul 1998

Western News, July 30, 1998, Western Michigan University

Western News (1972-2018)

Story highlights: Grants top $31 million in record finish to 1997-98 fiscal year, Trustees' decision means University will continue its seventh-place state ranking in tuition and fee costs, Floyd takes helm on Aug. 1, Five Kalamazoo churches mount scholarship effort for local students, Astronaut Jemison will give keynote address in series aimed at improving science and math achievement, Board approves Rapley and Saunders appointments; four retirements, Biosafety policy updated to meet new federal guidelines, International and area studies center named for Haenicke.

Go to article

“You’Re Doing What?”, Pamela Godfrey Osborn Jul 1998

“You’Re Doing What?”, Pamela Godfrey Osborn

Digitized Theses and Dissertations (prior to 2008)

A portfolio submitted in partial fulfillment of the requirements for the degree of Masters of Education in the Department of Special Education in the Bagwell College of Education at Kennesaw State University

Go to article

Carl Pursell, Oral History Interview, 1998, Laurence Smith Jul 1998

Carl Pursell, Oral History Interview, 1998, Laurence Smith

Oral Histories

Carl Pursell served as Regent of Eastern Michigan University from 1993-1999. This interview details Pursell’s involvement in state and national politics prior to his work at Eastern Michigan University. This interview is distributed over two cassette tapes. This interview was conducted for the purpose of gathering primary research for Laurence Smith’s book, Eastern Michigan University: A Sesquicentennial Portrait (1999).

Go to article

Enantiomeric Separation Of Unusual Secondary Aromatic Amino Acids, A. Péter, G. Török, G. Tóth, W. Van Den Nest, G. Laus, D. Tourwé, Daniel W. Armstrong Jul 1998

Enantiomeric Separation Of Unusual Secondary Aromatic Amino Acids, A. Péter, G. Török, G. Tóth, W. Van Den Nest, G. Laus, D. Tourwé, Daniel W. Armstrong

Chemistry Faculty Research & Creative Works

High-performance liquid chromatographic and gas chromatographic methods were developed for the separation of unusual secondary aromatic amino acids. Amino acids containing 1,2,3,4-tetrahydroisoquinoline, 1,2,3,4-tetrahydronorharmane-1-carboxylic acid and 1,2,3,4-tetrahydro-3-carboxy-2-carboline moieties were synthetized in racemic or chiral forms. The high-performance liquid chromatography was carried out either on a teicoplanin-containing chiral stationary phase or on an achiral C18 column. In the latter case the diastereomers of the amino acids formed by precolumn derivatization with the chiral reagents 2,3,3,6-tetra-O-acetyl-β-D-glucopyranosyl isothiocyanate or 1-fluoro-2,4-dinitrophenyl-5-L-alanine amide were separated. The gas chromatographic analyses were based on separation on a Chirasil-L-Val column.

Go to article

Disorder-Induced Topological Defects In A D=2 Elastic Medium At Zero Temperature, Alan Middleton Jul 1998

Disorder-Induced Topological Defects In A D=2 Elastic Medium At Zero Temperature, Alan Middleton

Physics - All Scholarship

The density and correlations of topological defects are investigated numerically in a model of a d=2 elastic medium subject to a periodic quenched random potential. The computed density of defects decreases approximately exponentially with the defect core energy. Comparing the defect-free ground state with the ground state with defects, it is found that the difference is described by string-like excitations, bounded by defect pairs, which have a fractal dimension of 1.250(3). At zero temperature, the disorder-induced defects screen the interaction of introduced vortex pairs.

Go to article

Cold Relativistic Wavebreaking, J.K. Kim, Donald P. Umstadter Jul 1998

Cold Relativistic Wavebreaking, J.K. Kim, Donald P. Umstadter

Donald Umstadter Publications

The two-dimensional wave-breaking of relativistic plasma waves driven by a ultrashort high-power lasers, is described within a framework of cold 2-D fluid theory. It is shown that the transverse nonlinearity of the plasma wave results in temporally increasing transverse plasma oscillation in the wake of the laser pulse, inevitably inducing wave-breaking below the 1-D threshold. A condition for wavebreaking is obtained and evaluated. A preformed density channel is found to partially cancel the effect and increase the length of wakefield that survives before wavebreaking occurs.

Go to article

On Packing Minors Into Connected Matroids, Manoel Lemos, James Oxley Jul 1998

On Packing Minors Into Connected Matroids, Manoel Lemos, James Oxley

Faculty Publications

Let N be a matroid with k connected components and M be a minor-minimal connected matroid having N as a minor. This note proves that |E(M) - E(N)| is at most 2k - 2 unless N or its dual is free, in which case |E(M) - E(N)| ≤k - 1. Examples are given to show that these bounds are best possible for all choices for N. A consequence of the main result is that a minimally connected matroid of rank r and maximum circuit size c has at most 2r - c + 2 elements. This bound sharpens a result …

Go to article

Illinois State University Board Of Trustees Meeting Materials, July 28, 1998, Board Of Trustees Jul 1998

Illinois State University Board Of Trustees Meeting Materials, July 28, 1998, Board Of Trustees

Illinois State University Board of Trustees (1995-2013)

Minutes, reports, and action items relating to the July 28, 1998 meeting of the Illinois State University Board of Trustees.

Go to article

Influence Of Ash Deposit Chemistry And Structure On Physical And Transport Properties, Larry Lin Baxter 8507091 Jul 1998

Influence Of Ash Deposit Chemistry And Structure On Physical And Transport Properties, Larry Lin Baxter 8507091

Faculty Publications

Boiler ash deposits generated during combustion of coal, biomass, black liquor, and energetic materials affect both the net plant efficiency and operating strategy of essentially all boilers. Such deposits decrease convective and radiative heat exchange with boiler heat transfer surfaces. In many cases, even a small amount of ash on a surface decreases local heat transfer rates by factors of three or more. Apart from their impact on heat transfer, ash deposits in boilers represent potential operational problems and boiler maintenance issues, including plugging, tube wastage (erosion and corrosion), and structural damage. This report relates the chemistry and microstructural properties …

Go to article

Octary Codewords With Power Envelopes Of 3∗2M, Katherine M. Nieswand, Kara N. Wagner Jul 1998

Octary Codewords With Power Envelopes Of 3∗2M, Katherine M. Nieswand, Kara N. Wagner

Department of Math & Statistics Technical Report Series

This paper examines codewords of length 2m in Z8 with envelope power maxima of 3 ∗ 2m. Using the general form for Golay pairs as a base, a general form is derived for the set of coset leaders that generate these codewords. From this general form it will be proven that there exists at least one element in the coset that achieves a power of 3 ∗ 2m for each m-even and m-odd case.

Go to article

07/25/1998 Obituary Records, Hawaii Obituaries Jul 1998

07/25/1998 Obituary Records, Hawaii Obituaries

Obituaries

List of Obituaries for individuals who passed away on 07/25/1998. Scroll down to see the names and obituary description.

Go to article

40th Rocky Mountain Conference On Analytical Chemistry Jul 1998

40th Rocky Mountain Conference On Analytical Chemistry

Rocky Mountain Conference on Magnetic Resonance

Final program, abstracts, and information about the 40th annual meeting of the Rocky Mountain Conference on Analytical Chemistry, co-sponsored by the Colorado Section of the American Chemical Society and the Rocky Mountain Section of the Society for Applied Spectroscopy. Held in Denver, Colorado, July 25 - August 1, 1998.

Go to article

The Weekly Challenger, July 25, 1998, The Weekly Challenger, Et Al Jul 1998

The Weekly Challenger, July 25, 1998, The Weekly Challenger, Et Al

Weekly Challenger Newspaper Collection

The July 25, 1998, issue of The Weekly Challenger.

Go to article

Role Of The Maillard Reaction In Aging Of Tissue Proteins: Advanced Glycation End Product-Dependent Increase In Imidazolium Cross-Links In Human Lens Proteins, Elisabeth Brinkmann Frye, Thorsten P. Degenhardt, Suzanne R. Thorpe, John W. Baynes Jul 1998

Role Of The Maillard Reaction In Aging Of Tissue Proteins: Advanced Glycation End Product-Dependent Increase In Imidazolium Cross-Links In Human Lens Proteins, Elisabeth Brinkmann Frye, Thorsten P. Degenhardt, Suzanne R. Thorpe, John W. Baynes

Faculty Publications

Dicarbonyl compounds such as glyoxal and methylglyoxal are reactive dicarbonyl intermediates in the nonenzymatic browning and cross-linking of proteins during the Maillard reaction. We describe here the quantification of glyoxal and methylglyoxal-derived imidazolium cross-links in tissue proteins. The imidazolium salt cross-links, glyoxal-lysine dimer (GOLD) and methylglyoxal-lysine dimer (MOLD), were measured by liquid chromatography/mass spectrometry and were present in lens protein at concentrations of 0. 02-0.2 and 0.1-0.8 mmol/mol of lysine, respectively. The lens concentrations of GOLD and MOLD correlated significantly with one another and also increased with lens age. GOLD and MOLD were present at significantly higher concentrations than the …

Go to article

Board Of Trustees Minutes, July 24, 1998, Eastern Washington University Jul 1998

Board Of Trustees Minutes, July 24, 1998, Eastern Washington University

Board of Trustees Minutes

No abstract provided.

Go to article

The Daily Egyptian, July 23, 1998, Daily Egyptian Staff Jul 1998

The Daily Egyptian, July 23, 1998, Daily Egyptian Staff

July 1998

No abstract provided.

Go to article

Central Florida Future, July 22, 1998 Jul 1998

Central Florida Future, July 22, 1998

Central Florida Future

Traffic laws apply to bikes same as cars; Classes use music and dance to aid child development; The ABCs of multiple choice tests; Summer not a vacation for all.

Go to article

Asymptotic Norming Properties And Related Themes., Sudeshna Basu Dr. Jul 1998

Asymptotic Norming Properties And Related Themes., Sudeshna Basu Dr.

Doctoral Theses

In the first part of this chapter, we explain the main theme of this thesis. The second part consists of some of the notions and results used in subsequent discussions.It is a very familiar fact that a point outside a (bounded) closed convex set in a Banach space can be separated from the latter by a hyperplane. One can ask whether the separation can be effected by disjoint balls. This is a typical example of a ball separation property, study of which has become important in Banach space theory. In this thesis, we study several such properties along with some …

Go to article

First Prev Next Last