Digital Commons Network^™

Red Rock Desert Learning Center Core Group Meeting: September 21, 2004, Red Rock Desert Learning Center

Reports (RRLC)

1. Introductions (5 min.)
2. Approval of Minutes from August 17 Meeting (5 minutes)
3. Potential Tie-in with City of Las Vegas New Directions YouthArts Program –
   Markus Tracy (20 min.)
4. Presentation of Education in the Environment Curriculum Matrix and correlation to
   RRDLC curriculum development – Jeanne Klockow (30 min.)
5. Discussion of Policy-making Board for the Center – Michael Reiland (15 min.)
6. Discussion of Observatory Location – Michael Reiland (25 min.)
7. Standing Reports (20 minutes)
   A. Line and Space Architects Update – Les Wallach/Henry Tom
   B. UNLV/CESU Update – Nancy Flagg
   C. RRCNCA Capital Improvements Update – BLM
8. Committee Reports (10 min.)
   A. …

Executive Committee - Agenda, 9/21/2004, Academic Senate

Academic Senate Agendas

No abstract provided.

Synthesis And Characterization Of Dendrimer Templated Supported Bimetallic Pt-Au Nanoparticles, Huifang Lang, S. Maldonado, K. J. Stevenson, Bert D. Chandler

Chemistry Faculty Research

Bimetallic dendrimer-stabilized nanoparticles (DSNs) were used to prepare supported Pt-Au catalysts within the bulk miscibility gap for this binary system. Hydroxy-terminated generation 5 PAMAM dendrimers were used to prepare Cu0 nanoparticles (NPs). The Cu⁰ NPs were subsequently used to reduce K₂PtCl₄ and HAuCl₄, preparing stabilized bimetallic Pt-Au NPs with a 1:1 stoichiometry. The stabilized NPs were adsorbed onto a high surface area silica support and thermally activated to remove the dendrimers. Transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), and infrared spectroscopy of adsorbed CO showed that this preparation route resulted in NPs in …

Solvent And Method For Extraction Of Triglyceride Rich Oil, Shubhender Kapila, Paul Ki-Souk Nam, V. J. Flanigan

Chemistry Faculty Research & Creative Works

The present invention relates to a solvent for use in extracting oil from an oil bearing material, such as soybeans, with the solvent resulting in the selective extraction of a triglyceride rich oil, which contains 95% or greater triglycerides and non-polar constituents, with the solvent comprised of a hydrocarbon, preferably hexane, and a fluorocarbon, so that the solvent has a viscosity less than 2.6 centipoise and a polarity of less than 0.1. The present invention also relates to a method of using the solvent to extract the triglyceride rich oil, with the method including preferably extracting the oil at a …

A Hypothesis Test For The End Of A Common Source Outbreak, Ron Brookmeyer, Xiaojun You

Johns Hopkins University, Dept. of Biostatistics Working Papers

The objective of this paper is to develop a hypothesis testing procedure to determine whether a common source outbreak has ended. We do not assume that the calendar date of exposure to the pathogen is known. We assume an underlying parametric model for the incubation period distribution of a 2-paramter exponential model with a guarantee time, although the parameters are not assumed to be known. The hypothesis testing procedure is based on the spacings between ordered calendar dates of disease onset of the cases. A simulation study was performed to evaluate the robustness of the methods to a lognormal model …

On The Uscrn Temperature System, Kenneth Hubbard, X. Lin, C.B. Baker

School of Natural Resources: Faculty Publications

In 2004 a new aspirated surface air temperature system was officially deployed nationally in the U.S. Climate Reference Network (USCRN) commissioned by the National Oceanic and Atmospheric Admin- istration. The primary goal of the USCRN is to provide future long-term and high-quality homogeneous observations of surface air temperature and precipitation that can be coupled to past long-term observations for the detection and attribution of present and future climate change. In this paper two precision air temperature systems are included for evaluating the new USCRN air temperature system based on a 1-yr side-by-side field comparison. The measurement errors of the USCRN …

Polarization-Dependent Electron Affinity Of Linbo3 Surfaces, W.-C. Yang, B. J. Rodriguez, Alexei Gruverman, R. J. Nemanich

Alexei Gruverman Publications

Polar surfaces of a ferroelectric LiNbO₃ crystal with periodically poled domains are explored using UV-photoelectron emission microscopy (PEEM). Compared with the positive domains (domains with positive surface polarization charges), a higher photoelectric yield is found from the negative domains (domains with negative surface polarization charges), indicating a lower photothreshold and a corresponding lower electron affinity. The photon-energy-dependent contrast in the PEEM images of the surfaces indicates that the photothreshold of the negative domains is ~4.6 eV while that of the positive domains is greater than ~6.2 eV. We propose that the threshold difference between the opposite domains can be …

Abstracts Of Papers From 6th Annual Meeting, Baltimore 2004

Bird Strike Committee-USA/Canada Joint Annual Meeting: 6th (2004)

Abstracts of 39 papers and 19 poster presentations.

Daily Eastern News: September 20, 2004, Eastern Illinois University

September

No abstract provided.

The Best Expert Versus The Smartest Algorithm, Peter Chen, Guoli Ding

Faculty Publications

In this paper, we consider the problem of online prediction using expert advice. Under different assumptions, we give tight lower bounds on the gap between the best expert and any online algorithm that solves the problem. © 2004 Elsevier B.V. All rights reserved.

September 20, 2004 Reporter, University Of Alabama At Birmingham

eReporter (campus newsletter)

No abstract provided.

Current, September 20, 2004, University Of Missouri-St. Louis

Current (2000s)

No abstract provided.

First Principles Study Of Transition-Metal Substitutions In Sm–Co Permanent Magnets, Renat F. Sabirianov, Arti Kashyap, Ralph Skomski, Sitaram Jaswal, David J. Sellmyer

David Sellmyer Publications

The microchemistry and magnetism of conventional and high-temperature Sm–Co permanent magnets are investigated by first-principles calculations. Particular emphasis is on the site preference for the substitution of Cu, Ti, and Zr in SmCo₅ and Sm₂Co₁₇ compounds. Cu substitution is more favorable in the 1:5 phase, in agreement with experimental findings. Titanium and zirconium have positive solution energies for both the phases, with Ti(Zr) having slight preference for the 1:5 (2:17) phase. Some Zr may segregate to the phase boundaries because of its large solution energy. For Ti and Zr the dumbbell site of the 2:17 phase …

Kinematics Of X‐Ray–Emitting Components In Cassiopeia A, Tracey Delaney, Lawrence Rudnick, Robert A. Fesen, T. W. Jones

Dartmouth Scholarship

We present high-resolution X-ray proper-motion measurements of Cassiopeia A using Chandra X-Ray Observatory observations from 2000 and 2002. We separate the emission into four spectrally distinct classes: Si-dominated, Fe-dominated, low-energy-enhanced, and continuum-dominated. These classes also represent distinct spatial and kinematic components. The Si- and Fe-dominated classes are ejecta and have a mean expansion rate of 0.2% yr-1. This is the same as for the forward shock filaments but less than the 0.3% yr-1 characteristic of optical ejecta. The low-energy-enhanced spectral class possibly illuminates a clumpy circumstellar component and has a mean expansion rate of 0.05% yr-1. The continuum-dominated emission likely …

The Benefit Of Using Simulation To Improve The Implementation Of Lean Manufacturing Case Study: Quick Changeovers To Allow Level Loading Of The Assembly Line, Jack J. Mcclellan

Theses and Dissertations

In today's competitive manufacturing environment, companies are constantly looking for ways to improve. Because of this, many companies are striving to become "lean" by implementing lean manufacturing, which is a difficult process. To aid in the implementation of lean manufacturing, simulation was used to reduce the trial-and-error period of lean manufacturing and find to optimum approach to implement the lean manufacturing principle. In this research, a case study of implementing level loading of the production schedule for BullFrog International, L.C. will be examined. To make it possible to implement level loading, the thermo-former machine at the beginning of the operations …

Faculty Senate Executive Committee Agenda, September 20, 2004, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• EPC Business
• Faculty Evaluation Committee
• Libraries Advisory Council
• Honors Program
• ASUSU
• Calendar Committee
• Domestic Partner Benefit
• Athletic Council
• Resolution of collaboration with ASUSU
• 2005-2006 Budget Presentation

In Situ Enzymatic Screening (Ises) Of P,N-Ligands For Ni(0)- Mediated Asymmetric Intramolecular Allylic Amination, David B. Berkowitz, Weijun Shen, Gourhari Maiti

David Berkowitz Publications

An in situ enzymatic screening (ISES) approach to rapid catalyst evaluation recently pointed to Ni(0) as a new candidate transition metal for intramolecular allylic amination. This led to further exploration of chiral bidentate phosphine ligands for such transformations. Herein, a variety of P,N-ligands are examined for this Ni(0)-chemistry, using a model reaction leading into the vinylglycinol scaffold. On the one hand, an N,N-bis(2-diphenylphosphinoethyl)alkylamine (‘PNP’) ligand proved to be the fastest ligand yet seen for this Ni(0)-transformation. On the other, phosphinooxazoline (PHOX) ligands of the Pfaltz–Helmchen– Williams variety gave the highest enantioselectivities (up to 51% ee) among P,N-ligands …

Stark Width And Shift Of The Neutral Argon 425.9 Nm Spectral Line, Vladimir Milosavljevic, Vida Zigman, Stevan Djenize

Articles

The Stark parameters, the width (W) and the shift (d), of the neutral argon (Ar I) 425.9 nm spectral line have been studied in a linear, low-pressure, optically thin pulsed arc discharge. The line shapes are measured in three different plasmas at about 16,000 K electron temperature (T) and about 7.0×10²² m⁻³ electron density (N). The separate electron and ion contributions to the total Stark width (W_t), i.e. W_e and W_i, as well as to the total Stark shift (d_t), i.e. …

Age And Achievement, James B. Grissom

Education Policy Analysis Archives (EPAA)

There is continuing controversy about the optimal or appropriate age at which children should start school. The purpose of this study is to examine the relationship between age and achievement. It is an attempt to evaluate the hypothesis that older students fare better academically than their younger classmates.

Education Policy Analysis Archives 12/49 , Arizona State University, University Of South Florida

College of Education Publications

Age and achievement / James B. Grissom.

A Review Of Setup Practices And Procedures For Creating Ieee 802.11 Wireless Community Networks, Jae M. Theobald

Theses and Dissertations

IEEE 802.11 wireless networking equipment has made it possible to bridge the last mile for new broadband internet service providers. Inexpensive wireless networking equipment and high gain antennas enable high speed internet delivery at a fraction of the cost of installing or upgrading land lines for cable or DSL services. Based on this research, a guide of general practices and procedures is proposed for designing, installing, and maintaining a reliable wireless community area network. Included tests have provided performance results for several types of wireless antennas (including wire grid parabolic dishes, Yagi and Vagi styles, and echo backfire), wireless bridges, …

Volume 40 - Issue 02 - Friday, September 17, 2004, Rose Thorn Staff

The Rose Thorn Archive

The Rose Thorn, Rose-Hulman's independent student newspaper.

Optimal Sampling Times In Bioequivalence Studies Using A Simulated Annealing Algorithm , Leena Choi, Brian Caffo, Charles Rohde

Johns Hopkins University, Dept. of Biostatistics Working Papers

In pharmacokinetic (PK) studies, blood samples are taken over time on subjects after the administration of a drug to measure the time-course of the plasma drug concentrations. In bioequivalence studies, the trapezoidal rule on the sampled time points is often used to estimate the area under the plasma concentration-time curve, a quantity of principle interest. This manuscript investigates the choice of sampling time points to estimate the area under the curve. In particular, we explore the relative merits of several objective functions, those functions which are minimized with respect to the sampling times to obtain an optimal study design. We …

Minutes Board Of Directors Meeting: September 17, 2004, The Davinci Institute

Minutes and Agendas

The Board of Directors of The DaVinci Institute (DVI) met on Friday, September 17, 2004, at the Oklahoma State Regents of Higher Education (OSRHE) conference room.

Superconducting Transition Edge Sensor Using Dilute Almn Alloys, S. W. Deiker, W. Doriese, G. C. Hilton, K. D. Hilton, W. H. Rippard, J. N. Ullom, L. R. Vale, S. T. Ruggiero, A. Williams, Betty A. Young

Physics

We have fabricated a bolometer using a transition-edge sensor (TES) made of Al doped with Mn to suppress the superconducting critical temperature (T_c) of Al from ∼1Kto∼100mK. The resulting detector exhibits low-frequency noise consistent with theory, with a noise-equivalent power of 7.5×10⁻¹⁸W/√Hz. The addition of Mn impurities did not significantly increase the heat capacity of the TES. In addition, the detector is surprisingly insensitive to applied magnetic fields. The use of AlMn alloy films in arrays of TES detectors has advantages in simplicity of fabrication when compared to traditional bilayer fabrication techniques.

September 17, 2004, College Of Science Curriculum Committee

Curriculum Committee

No abstract provided.

Faculty Senate Meeting Minutes Sept 17, 2004, A-State Faculty Senate

Faculty Senate Minutes

No abstract provided.

Polarization Of Nuclear Spins From The Conductance Of Quantum Wires, James A. Nesteroff, Yuriy V. Pershin Dr, Vladimir Privman

Faculty Publications

We devise an approach to measure the polarization of nuclear spins via conductance measurements. Specifically, we study the combined effect of external magnetic field, nuclear spin polarization, and Rashba spin-orbit interaction on the conductance of a quantum wire. Nonequilibrium nuclear spin polarization affects the electron energy spectrum making it time dependent. Changes in the extremal points of the spectrum result in time dependence of the conductance. The conductance oscillation pattern can be used to obtain information about the amplitude of the nuclear spin polarization and extract the characteristic time scales of the nuclear spin subsystem.

Techniques And Patterns For Safe And Efficient Real-Time Middleware, Angelo Corsaro

All Computer Science and Engineering Research

Over 90 percent of all microprocessors are now used for real-time and embedded applications. The behavior of these applications is often constrained by the physical world. It is therefore important to devise higher-level languages and middleware that meet conventional functional requirements, as well as dependably and productively enforce real-time constraints. Real-Time Java is emerging as a safe, real-time environment. In this thesis we use it as our experimentation platform; however, our findings are easily adapted to other similar platforms. This thesis provides the following contributions to the study of safe and efficient real-time middleware. First, it identifies potential bottlenecks and …

Crusader, September, 17, 2004, 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.