Digital Commons Network^™

Traditional Signal Pattern Recognition Versus Artificial Neural Networks For Nuclear Plant Diagnostics, Shahla Keyvan

Nuclear Engineering and Radiation Science Faculty Research & Creative Works

This paper introduces a new tool based on a traditional noise analysis technique for monitoring reactor components' signal condition. It also presents the performance of artificial neural networks for pattern recognition to the same set of reactor signals and provides a comparison of these two techniques. Reactor pump signals from the Experimental Breeder Reactor (EBR-II) are utilized here. Collected signals such as pump power, pump speed, and pump pressure are obtained from already installed sensors in the reactor. The signals utilized are collected signals as well as generated signals simulating the pump shaft degradation progress. From the study of time …

Recoil Momentum Spectroscopy Of Highly Charged Ion Collisions On Magneto-Optically Trapped Na, J. W. Turkstra, R. Hoekstra, S. Knoop, D. Meyer, R. Morgenstern, Ronald E. Olson

Physics Faculty Research & Creative Works

An attempt was made to derive new generation of cold targets for cold target recoil oil momentum spectroscopy (COLTRIMS) experiments. The ultracold targets were obtained by laser cooling and trapping in a magneto-optical trap (MOT). Impact parameter sensitive information about multielectron capture processes was obtained.

Universal Negative Poisson Ratio Of Self Avoiding Fixed Connectivity Membranes, Mark Bowick, Angelo Cacciuto, G. Thorleifsson, A. Travesset

Physics - All Scholarship

We determine the Poisson ratio of self-avoiding fixed-connectivity membranes, modeled as impenetrable plaquettes, to be sigma=-0.37(6), in statistical agreement with the Poisson ratio of phantom fixed-connectivity membranes sigma=-0.32(4). Together with the equality of critical exponents, this result implies a unique universality class for fixed-connectivity membranes. Our findings thus establish that physical fixed-connectivity membranes provide a wide class of auxetic (negative Poisson ratio) materials with significant potential applications in materials science.

Validation Of Land Surface Models Using Satellite-Derived Surface Temperature, Joshua Rhoads, Ralph Dubayah, Dennis Lettenmaier, Greg O'Donnell, Venkataraman Lakshmi

Faculty Publications

This research examines the feasibility of using remotely sensed surface temperature for validation and updating of land surface hydrologic models. Surface temperature simulated by the Variable Infiltration Capacity (VIC) hydrologie model is compared over the Arkansas-Red River basin with surface temperature retrievals from TOVS and GOES. The results show that modeled and satellite-derived surface temperatures agree well when aggregated in space or time. In particular, monthly mean temperatures agree on the pixel scale, and basin mean temperatures agree instantaneously. At the pixel scale, however, surface temperatures from both satellites were found to have higher spatial and temporal variabilities than the …

Modelling The Trappability Of Tsetse, Glossina Fuscipes Fuscipes, In Relation To Distance From Their Natural Habitats, Adedapo Odulaja, Mohamed M. Mohamed-Ahmed

All Peer-Reviewed Publications

The log-logistic probability distribution function was employed to model trappability of Glossina fuscipes fuscipes, with respect to distance from the edge of two types of habitat. The parameters of the model were obtained using the nonlinear maximum likelihood approach. Asymptotic standard errors of the maximum likelihood estimates were computed for the parameters, and the X2 goodness-of-fit test used to assess the predicted trap catches. Simulation technique was used to estimate the radius of attraction of the unbaited biconical trap for the fly, taking the efficiency of the trap into consideration. The log-logistic model fitted well to a series of observed …

September 14, 2001, College Of Science Curriculum Committee

Curriculum Committee

No abstract provided.

Predicting Variations In Mathematics Performance In Four Countries Using Timss, Daniel Koretz, Daniel Mccaffrey, Thomas Sullivan

Education Policy Analysis Archives (EPAA)

... This study used data from the Third International Mathematics and Science Study (TIMSS) to compare the variability of performance in the U.S., Australia, France, Germany, Hong Kong, Korea, and Japan; investigate how this performance variation is distributed within and between classrooms; and explore how well background variables predict performance at both levels. ...

Crusader, September, 14, 2001, College Of The Holy Cross

Student Newspapers

The student newspaper for the College of the Holy Cross in Worcester, Massachusetts. Articles include coverage of campus events and issues, sports, editorials and special features.

Similarity Of Mathematics And Science Achievement Of Various Nations, Algirdas Zabulionis

Education Policy Analysis Archives (EPAA)

In 1991-97, the International Association for the Evaluation of Educational Achievement (IEA) undertook a Third International Mathematics and Science Study (TIMSS) in which data about the mathematics and science achievement of the thirteen year-old students in more than 40 countries were collected. These data provided the opportunity to search for patterns of students' answers to the test items: which group of items was relatively more difficult (or more easy) for the students from a particular country (or group of countries). Using this massive data set an attempt was made to measure the similarities among country profiles of how students responded …

Education Policy Analysis Archives 09/33 , Arizona State University, University Of South Florida

College of Education Publications

Similarity of mathematics and science achivement of various nations / Algirdas Zabulionis.

Education Policy Analysis Archives 09/34 , Arizona State University, University Of South Florida

College of Education Publications

Predicting variations in mathematics performance in four countries using TIMSS / Daniel Koretz, Daniel McCaffrey, [and] Thomas Sullivan.

Volume 39, Number 3: September 14, 2001, University Of North Dakota

University Letter Archive

No abstract provided.

Volume 39, Number 3: September 14, 2001, University Of North Dakota

University Letter Archive

No abstract provided.

Wmu Board Of Trustees Formal Sessionseptember 14, 2001, Wmu Board Of Trustees

WMU Board of Trustees Meetings

Minutes of the September 14, 2001 Board of Trustees meeting include:

• Remarks by the Chair
• Remarks by the President
• Acceptance of the Agenda
• Approval of the Minutes of the July 6, 2001 Regular Meeting
• Recommendation re Presidential Evaluation/Compensation
• Academic and Student Affairs Committee Recommendations
  • Grant Report
  • Personnel Report
• Budget and Finance Committee Recommendations
  • “Partnering for Success: The Centennial Campaign for Western Michigan University”
  • Gift Report
  • Personnel Report
  • Western Michigan University Annuity and Life Income Funds – Retention of State Street
  • Lease Extension – National City Branch Bank
  • Bank ATM Lease – National City Bank
• Informational Items
  • Remarks by the Provost …

The Amicus Curiae (Vol. 11, Issue 10)

Student Newspaper (Amicus, Advocate...)

No abstract provided.

Plasma Transport At The Magnetospheric Boundary Due To Reconnection In Kelvin-Helmholtz Vortices, K. Nykyri, A. Otto

Publications

The Kelvin-Helmholtz( KH) mode has long been considered for viscous interaction at the magnetospheric boundary but it is not expected to produce significant mass transport. The presented results indicate that the Kelvin- Helmholtz instability can indeed cause a transfer of mass into the magnetotail during times of northward IMF. The vortex motion of KH waves can generate a strongly twisted magnetic field with multiple current layers. Magnetic reconnection in the strong current layers inside the vortices can detach high density plasma filaments from the magnetosheath. This may explain observed high density and low temperature filaments in the magnetosphere and the …

Washington University Record, September 14, 2001

Washington University Record

No abstract provided.

Western News, Sept. 13, 2001, Western Michigan University

Western News (1972-2018)

Story highlights: University to play role in education reform, WMU included among top 100 public universities for third year, Meijer chief to visit campus for Haworth College of Business talk, Korth discusses euro in Passau, Workshop to focus on Earth-friendly ways to find oil in old places, Colella joins Conferences and Seminars staff as coordinator, On Campus with Vickie Langkam, WMUK listeners to again hear tell of Lake Wobegon and Guy Noir.

Eastern Progress - 13 Sep 2001, Eastern Kentucky University

Eastern Progress 2001-2002

No abstract provided.

Observation Of The Kapitza-Dirac Effect, Daniel L. Freimund, Kayvan Aflatooni, Herman Batelaan

Department of Physics and Astronomy: Faculty Publications

In their famous 1927 experiment, Davisson and Germer observed the diffraction of electrons by a periodic material structure, so showing that electrons can behave like waves. Shortly afterwards, Kapitza and Dirac predicted that electrons should also be diffracted by a standing light wave. This Kapitza-Dirac effect is analogous to the diffraction of light by a grating, but with the roles of the wave and matter reversed. The electron and the light grating interact extremely weakly, via the ‘ponderomotive potential,’ so attempts to measure the Kapitza-Dirac effect had to wait for the development of the laser. The idea that the underlying …

Meeting Notes 2001-09-13 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Exponent, Vol. 33, No. 4, 2001-09-13, University Of Alabama In Huntsville

2001

No abstract provided.

The Guardian, September 13, 2001, Wright State University Student Body

The Guardian Student Newspaper

Thirty-two 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 Wooster Voice (Wooster, Oh), 2001-09-13, Wooster Voice Editors

The Voice: 2001-2011

This issue details the campus community's reaction after the events for September 11th. College President R. Stanton Hales addresses students and faculty members at McGaw Chapel as Wooster takes the opportunity to pray and mourn. College officials considered about the nationalistic backlash and harassment, step up security patrols and have advised international students to stay close to campus. Naughty by Nature set to play a concert at Wooster's Party on the Green. The edition includes quotes from Wooster students in response to the September 11th attacks. Dr. Brian Dykstra, a ragtime pianist, of "Rags and Cuban Danzas" performs at Gault …

Illinois State University Report, September 13, 2001, Illinois State University

Illinois State University Report (1966-2012)

Illinois State University bi-weekly employee newsletter.

Ke Alaka'i, Vol. 65, No. 28 (2001-09-12), Brigham Young University Hawaii

Ke Alaka'i

No abstract provided.

Forum, September 12-23, 2001, Lisa Cunningham

Inside USF

The September 12-23, 2001, issue of Forum.

09/11/2001 Obituary Records, Hawaii Obituaries

Obituaries

List of Obituaries for individuals who passed away on 09/11/2001. Scroll down to see the names and obituary description.

09/11/2001 Obituary Records, Hawaii Obituaries

Obituaries

List of Obituaries for individuals who passed away on 09/11/2001. Scroll down to see the names and obituary description.

The Pan American (2001-09-11), Matt Lynch

UTPA Archives - The Pan American Newspaper

50th Year, No. 2