Digital Commons Network^™

Electron Injection By Dephasing Electrons With Laser Fields, E. Dodd, J.K. Kim, Donald P. Umstadter

Donald Umstadter Publications

The authors seek to review injection concepts for plasma based acceleration. It is shown that regardless of injection mechanism, resultant beams will be similar due to wave structure. Also, most schemes employ the same basic processes, namely the dephasing of electrons by laser fields, and can thus be analyzed with similar approaches.

Acceleration Of Electrons In A Self-Modulated Laser Wakefield, Shouyuan Chen, M. Krishnan, Anatoly Maksimchuk, Donald P. Umstadter

Donald Umstadter Publications

Acceleration of electrons in a self-modulated laser-wakefield is investigated. The generated electron beam is oberved to have a multi-component beam profile and its energy distribution undergoes discrete transitions as the conditions are varied. These features can be explained by simple simulations of electron propagation in a 3-D plasma wave.

Subsidence, Mixing, And Denitrification Of Arctic Polar Vortex Air Measured During Polaris, M. Rex, R. J. Salawitch, G. C. Toon, B. Sen, J. J. Margitan, G. B. Osterman, J. F. Blavier, R. S. Gao, Stephen G. Donnelly Ph.D., E. Keim, J. Neuman, D. W. Fahey, C. R. Webster, D. C. Scott, R. L. Herman, R. D. May, E. J. Moyer, M. R. Gunson, F. W. Irion, A. Y. Chang, C. P. Rinsland, T. P. Bui

Chemistry Faculty Publications

We determine the degree of denitrification that occurred during the 1996-1997 Arctic winter using a technique that is based on balloon and aircraft borne measurements of NOy, N2O, and CH4. The NOy/N2O relation can undergo significant change due to isentropic mixing of subsided vortex air masses with extravortex air due to the high nonlinearity of the relation. These transport related reductions in NOy can be difficult to distinguish from the effects of denitrification caused by sedimentation of condensed HNO3. In this study, high-altitude balloon measurements are used to define the properties of air masses that later descend in the polar …

Volume 37, Number 13: November 19, 1999, University Of North Dakota

University Letter Archive

No abstract provided.

Sandspur, Vol 106 No 10, November 19, 1999, Rollins College

The Rollins Sandspur

Rollins College student newspaper, written by the students and published at Rollins College. The Sandspur started as a literary journal.

The Courier, Volume 33, Issue 8, November 19, 1999, The Courier, College Of Dupage

The Courier

Stories:

Paul Simon Speaks On Water Shortage

Prairie Burn Mishap

Reorganization Continues Despite College Review

New SGA Senate Begins Term

Hallway Noise Disrupts Classes In IC

Faculty Respond To Assessment

Holiday Staple, The Nutcracker To Be Performed At McAninch

Art Show To Honor Retiring Teacher

Volleyball Wins Second National Title

The Big Payback–Chaparrals Avenge Only Loss Of Season And Advance To Nationals

Women’s Soccer Team Prepares For Nationals

People:

Paul Simon

E.J. Mugnaini

Richard Simmons

Dan Joseph Daniel Caponigri

John Wantz

Demond Brown

Marcelle Merchat

Lady Eagles Vs. Davis & Elkins / Eagles Vs. Virginia-Wise / Eagles Vs. St. Francis (Ind.), Morehead State University. Office Of Athletics.

Morehead State Sports Team Programs

The official game program from the November 19, 23 and 30, 1999 basketball games between Morehead State University and Davis & Elkins College, Virginia-Wise University and the University of St. Francis.

Panther- November 1999 - Vol. Lxxvii, No.6, Prairie View A&M University

PV Panther Newspapers

No abstract provided.

Soundings 1999-11-19 (V.12 No.23), N/A N/A

Soundings

No abstract provided.

Chanticleer | Vol 48, Issue 11, Jacksonville State University

Chanticleer

No abstract provided.

Daily Eastern News: November 18, 1999, Eastern Illinois University

November

No abstract provided.

Washington University Record, November 18, 1999

Washington University Record

No abstract provided.

Spectator 1999-11-18, Editors Of The Spectator

The Spectator

No abstract provided.

The Observer, Central Washington University

Student Newspaper

Student newspaper for Central Washington University for November 18, 1999

The Wooster Voice (Wooster, Oh), 1999-11-18, Wooster Voice Editors

The Voice: 1991-2000

This edition of the Wooster Voice published on November 18 of 1999 is sixteen pages long. The first page features an article about a five year plan to maintain and increase retention rates. Pages four and five take a look at the past, present, and future of Greek Societies. One student's mother wrote a letter to the Voice regarding her daughter's living situation. Professor of Chemistry Paul L. Gaus has been studying the Amish community in order to portray them as authentically as possible in his new novel. Page eight features an article about what President Stanton Hales does in …

The Ticker, November 17, 1999

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.

The Cord Weekly (November 17, 1999)

The Cord

No abstract provided.

Spartan Daily, November 17, 1999, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily (School of Journalism and Mass Communications)

Volume 113, Issue 56

The Winonan, Winona State University

The Winonan - 1990s

No abstract provided.

Light Scalar Mesons, Joseph Schechter, Deirdre Black, Amir H. Fariborz

Physics - All Scholarship

We review how a certain effective chiral Lagrangian approach to pi pi scattering, pi K scattering and eta-prime decay to eta pi pi provides evidence for the existence of light scalars sigma(550) and kappa(900) as well as describing the f0(980) and the a0(980). An attempt to fit these into a nonet suggests that their structure is closer to a dual quark-dual antiquark than to a quark-antiquark. A possible mechanism to explain the next higher mass scalar nonet is also proposed.

Daily Eastern News: November 17, 1999, Eastern Illinois University

November

No abstract provided.

University Of Montana Events Thursday, Nov. 18, Through Thursday, Nov. 25, 1999, University Of Montana--Missoula. Office Of University Relations

University of Montana News Releases, 1928, 1956-present

No abstract provided.

The Guardian, November 17, 1999, Wright State University Student Body

The Guardian Student Newspaper

Twenty-four page issue of The Guardian, the official student-run newspaper for Wright State University. The Guardian has been published regularly since March of 1965.

The Daily Egyptian, November 16, 1999, Daily Egyptian Staff

November 1999

No abstract provided.

Mustang Daily, November 16, 1999

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Montana Kaimin, November 16, 1999, Associated Students Of The University Of Montana

Montana Kaimin, 1898-present

Student newspaper of the University of Montana, Missoula.

Immaccs: A Military Decision-Support System, Jens G. Pohl, Anthony A. Wood, Kym Jason Pohl, Arthur J. Chapman

Collaborative Agent Design (CAD) Research Center

The Integrated Marine Multi-Agent Command and Control System (IMMACCS) is a multi-agent, distributed system, designed to provide a ‘common tactical picture’ with integrated and meaningful decision-support facilities to authorized operators at any access node. IMMACCS has been implemented as a three-tier architecture that distinguishes between information, logic and presentation. It utilizes an object-serving communication facility with subscription and multi-casting capabilities that is based on the Common Object Request Broker Architecture (CORBA). With an emphasis on application, IMMACCS was designed and implemented in concert with its military users as an integral component of experiments conceived by the Marine Corps Warfighting Laboratory …

The Statesman, V. 43, I. 20, State University Of New York At Stony Brook

Stony Brook Statesman-Sucolian

v. 43, i. 20

Selective Adsorption Of Metallocenes On Clean And Chemically Modified Si(111) Surfaces, J.-L. Lin, H. Rauscher, A. Kirakosian, F.J. Himpsel, Peter A. Dowben

Peter Dowben Publications

Metallocene adsorption on clean Si(111) and CaF₂/CaF₁/Si(111) substrates has been investigated with scanning tunneling microscopy. The surface chemical composition is found to strongly change the adsorption site selectivity, leading to an enhanced edge selectivity on modified substrates. Templates with well-defined local chemical reactivity have been created via self-assembly. The selective adsorption of metallocenes on such tailored substrates facilitates patterning ordered arrays of magnetic nanowires and stripes on the single digit nanometer scale. ©1999 American Institute of Physics.

Evaluating Maximum Likelihood Estimation Methods To Determine The Hurst Coefficient, Christina Marie Kendziorski, J. B. Bassingthwaighte, Peter J. Tonellato

Mathematics, Statistics and Computer Science Faculty Research and Publications

A maximum likelihood estimation method implemented in S-PLUS (S-MLE) to estimate the Hurst coefficient (H) is evaluated. The Hurst coefficient, with 0.5<HS-MLE was developed to estimate H for fractionally differenced (fd) processes. However, in practice it is difficult to distinguish between fd processes and fractional Gaussian noise (fGn) processes. Thus, the method is evaluated for estimating H for both fd and fGn processes. S-MLE gave biased results of H for fGn processes of any length and for fd processes of lengths less than 2¹⁰. A modified method is proposed to correct for …