Physical Sciences and Mathematics | Open Access Articles

Shaping The Future Of Southern Nevada Conference Key Points, Ron Smith

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

General summary of key points raised at the conference

Concurrent Panel Session 2: Service Learning: Linking Students And Community, Daniel Mclean, Jane Pike, Seth Pollack, Fran Smith, Jean Whitney, Cheri Young

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Moderator: Peg Rees, UNLV Public Lands Institute Scribe: Melanie Taylor, UNLV Department of Criminal Justice Conference white paper & Full summary of panel session, 4 pages

Go to article

Concurrent Panel Session 1: Sustainability In Community Development And Architecture In Las Vegas, Alfredo Fernandez-Gonzalez, Craig Galati, Mary Kay Peck, Jeff Roberts, Suzanne Sanders, Richard Serfas

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Moderator: David Frommer, AIA, UNLV Planning & Construction Scribe: Michael Spurr, UNLV Department of History Conference white paper & Full summary of panel session, 5 pages

Go to article

Concurrent Panel Session 2: Challenges Facing Our Youth And Aged Populations, Michele Clark, Claudia Collins, Chris Kearney, Ed Jost, Larry Mason, Carla Sloan, William Sullivan

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Moderator: Dr. Ann McDonough, UNLV Gerontology Program Scribe: Lisa Gioia-Acres, UNLV Department of History Conference white paper & Full summary of panel session, 4 pages

Go to article

Concurrent Panel Session 1: Challenges Of Economic Growth & Diversification & Labor Preparation In Las Vegas, Maggie Arias-Petrel, Cedric Crear, Somer Hollingsworth, Mike Majewski, John Restrepo, Mary Riddel, Keith Schwer, Dina Titus

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Moderator: Dr. Mel Jameson, UNLV College of Business Scribe: Angela Moor, UNLV Department of History Conference white paper & Full summary of panel session, 6 pages

Go to article

Concurrent Panel Session 2: Health Challenges Facing Las Vegas, Carlos Brandenburg, Shawn Gerstenberger, Zaven Khachaturian, John Mcdonald, Dennis Pirages, Thom Reilly, Kathy Silver, Bonnie Sorenson, Carolyn B. Yucha, Maurizio Trevisan

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Moderator: Marcia Turner, NSHE Health Science System Scribe: Candace Griffith, UNLV Department of Sociology Conference white paper & Full summary of panel session, 8 pages

Go to article

Concurrent Panel Session 1: Environmental Sustainability And Las Vegas, Dale A. Devitt, David E. James, Patricia Mulroy, Alan O'Neill, Thomas C. Piechota, Doug Selby, Krystyna Anne Stave, Michael Yackira, Bruce Turner

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Moderator: Dr. Stan Smith, UNLV School of Life Sciences Scribe: Crystal Jackson, UNLV Department of Sociology Conference white paper & Full summary of panel session, 6 pages

Go to article

Engaging The Community: The Metropolitan University, Jonathan Fink

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

31 PowerPoint slides Abstract: -Phoenix late entry in global, high-tech competition -ASU assists Metro Phoenix with all aspects of sustainability -University provides expertise, ideas, tools, workforce -Global Institute of Sustainability aligns ASU & regional needs -Decision Theater: Policy-making plus technology -Lessons should be relevant to Las Vegas and UNLV

Go to article

Las Vegas X 3 @ 2030-Part 1 & 2, Arthur Chris Nelson

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Part 1, 12 PowerPoint slides

Go to article

Shaping The Future Of Southern Nevada Conference Schedule

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Emcee: Dr. Ron Smith, UNLV Interim Vice President for Research & Graduate Dean

Go to article

Shaping The Future Of Southern Nevada Conference Photos

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

7 pages

Go to article

Shaping The Future Of Southern Nevada Moderators & Panelists Biographies

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Moderators & Panelists biographies

Go to article

Shaping The Future Of Southern Nevada Conference Cover Artwork, James B. Pink

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Artwork Credit: Blue Moon, Acrylic Painting, 4' x 5' by

Go to article

A High Repetition Rate Time-Of-Flight Electron Energy Analyzer, Shawn A. Hilbert, Brett E. Barwick, M. Fabrikant, Cornelis J. Uiterwaal, Herman Batelaan

C.J.G.J. Uiterwaal Publications

We demonstrate a time-of-flight electron energy analyzer that operates at an 80 MHz repetition rate. The analyzer yields an energy resolution of 40 meV for 3 eV electrons. The energy resolution limit is dominated by the detector time (or temporal) resolution. With a currently available detector with a temporal resolution of 100 ps, we predict an energy resolution of less than 1 meV for 200 meV electrons. This makes high repetition rate time-of-flight energy analyzers a promising low-technology alternative to current state-of-the-art techniques.

Go to article

Microimprinting And Ferroelectric Properties Of Poly(Vinylidene Fluoride-Trifluoroethylene) Copolymer Films, Lei Zhang, Stephen Ducharme, Jiangyu Li

Stephen Ducharme Publications

Poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer films have been patterned by microimprinting with excellent quality of pattern transferring. Ferroelectricity of the imprinted films has been confirmed by ferroelectric hysteresis and surface potential measurement, and very good correlation is observed between remnant polarization and surface potential of the imprinted films. Imprinted P(VDF-TrFE) films show high remnant polarization and high poling-induced surface potential when the imprinting temperature is around 140 °C, suggesting that 140 °C is the optimal imprinting temperature for P(VDF-TrFE) films. The patterned ferroelectric P(VDF-TrFE) films can be used for a wide range of applications.

Go to article

Searches For Periodic Gravitational Waves From Unknown Isolated Sources And Scorpius X-1: Results From The Second Ligo Science Run, B. Abbott, R. Abbott, R. Adhikari, J. Agresti, P. Ajith, B. Allen, R. Amin, S. B. Anderson, W. G. Anderson, M. Arain, M. Araya, H. Armandula, M. Ashley, S. Aston, P. Aufmuth, C. Aulbert, S. Babak, S. Ballmer, H. Bantilan, B. C. Barish, C. Barker, D. Barker, B. Barr, P. Barriga, M. A. Barton, K. Bayer, K. Belczynski, S. J. Berukoff, J. Betzwieser, P. T. Beyersdorf, B. Bhawal, Tiffany Z. Summerscales

Faculty Publications

We carry out two searches for periodic gravitational waves using the most sensitive few hours of data from the second LIGO science run. Both searches exploit fully coherent matched filtering and cover wide areas of parameter space, an innovation over previous analyses which requires considerable algorithm development and computational power. The first search is targeted at isolated, previously unknown neutron stars, covers the entire sky in the frequency band 160-728.8 Hz, and assumes a frequency derivative of less than 4×10-10Hz/s. The second search targets the accreting neutron star in the low-mass x-ray binary Scorpius X-1 and covers the frequency bands …

Go to article

Error Sensor Placement For Active Control Of An Axial Cooling Fan, Benjamin M. Shafer

Theses and Dissertations

Recent experimental achievements in active noise control (ANC) for cooling fans have used near-field error sensors whose locations are determined according to a theoretical condition of minimized sound power. A theoretical point source model, based on the condition previously stated, reveals the location of near-field pressure nulls that may be used to optimize error sensor placement. The actual locations of these near-field pressure nulls for both an axial cooling fan and a monopole loudspeaker were measured over a two-dimensional grid with a linear array of microphones. The achieved global attenuation for each case is measured over a hemisphere located in …

Go to article

Fept Nanodot Arrays With Perpendicular Easy Axis, Large Coercivity, And Extremely High Density, Chaehyun Kim, Thomas Loedding, Seongjin Jang, Hao Zeng, Zhen Li, Yucheng Sui, David J. Sellmyer

David Sellmyer Publications

Ordered FePt nanodot arrays with extremely high density have been developed by physical vapor deposition using porous alumina templates as evaporation masks. Nanodot diameter of 18 nm and periodicity of 25 nm have been achieved, resulting in an areal density exceeding 1 x10¹² dots/in². Rapid thermal annealing converts the disordered fcc to L1₀ phase, resulting in (001)-oriented FePt nanodot arrays with perpendicular anisotropy and large coercivity, without the need of epitaxy. High anisotropy and coercivity, perpendicular easy axis orientation and extremely high density are desirable features for future magnetic data storage media applications.

Go to article

Nonparametric And Semiparametric Group Sequential Methods For Comparing Accuracy Of Diagnostic Tests, Liansheng Tang, Scott S. Emerson, Xiao-Hua Zhou

UW Biostatistics Working Paper Series

Comparison of the accuracy of two diagnostic tests using the receiver operating characteristic (ROC) curves from two diagnostic tests has been typically conducted using fixed sample designs. On the other hand, the human experimentation inherent in a comparison of diagnostic modalities argues for periodic monitoring of the accruing data to address many issues related to the ethics and efficiency of the medical study. To date, very little research has been done in the use of sequential sampling plans for comparative ROC studies, even when these studies may use expensive and unsafe diagnostic procedures. In this paper, we propose a nonparametric …

Go to article

Evidence For A Dinuclear Active Site In The Metallo-Β-Lactamase Bcii With Substoichiometric Co(Ii): A New Model For Uptake, Leticia L. Llarrull, Mariana F. Tioni, Jason M. Kowalski, Brian Bennett, Alejandro J. Vila

Physics Faculty Research and Publications

Metallo-β-lactamases are zinc-dependent enzymes that constitute one of the main resistance mechanisms to β-lactam antibiotics. Metallo-β-lactamases have been characterized both in mono- and dimetallic forms. Despite many studies, the role of each metal binding site in substrate binding and catalysis is still unclear. This is mostly due to the difficulties in assessing the metal content and site occupancy in solution. For this reason, Co(II) has been utilized as a useful probe of the active site structure. We have employed UV-visible, EPR, and NMR spectroscopy to study Co(II) binding to the metallo-β-lactamase BcII from Bacillus cereus. The spectroscopic features were …

Go to article

Resistivity Of Kapton E At Intermediate Time Scales Following High-Energy Electron Irradiation, S Hart, Jr Dennison, J Brunson, Jodie C. Gillespie

Presentations

No abstract provided.

Go to article

A Bayesian Image Analysis Of The Change In Tumor/Brain Contrast Uptake Induced By Radiation Via Reversible Jump Markov Chain Monte Carlo, Xiaoxi Zhang, Tim Johnson, Roderick J.A. Little

The University of Michigan Department of Biostatistics Working Paper Series

This work is motivated by a pilot study on the change in tumor/brain contrast uptake induced by radiation via quantitative Magnetic Resonance Imaging. The results inform the optimal timing of administering chemotherapy in the context of radiotherapy. A noticeable feature of the data is spatial heterogeneity. The tumor is physiologically and pathologically distinct from surrounding healthy tissue. Also, the tumor itself is usually highly heterogeneous. We employ a Gaussian Hidden Markov Random Field model that respects the above features. The model introduces a latent layer of discrete labels from an Markov Random Field (MRF) governed by a spatial regularization parameter. …

Go to article

Incorporating Geostatistical Constraints In Nonlinear Inverse Problems, T. C. Johnson, Partha S. Routh, Tom Clemo, Warren Barrash, William P. Clement

CGISS Publications and Presentations

In this paper we present a method of incorporating semivariogram constraints into nonlinear inversion problems. That is, we describe a method of sampling the space of inverse solutions that honor a specified semivariogram or set of semivariograms and also explain a set of state data. The approach can be considered a method of conditional simulation where model conditioning is based upon state data (as opposed to parameter data). The difference between this approach and other simulation approaches is that the simulation is posed as an optimization problem with the joint objective of matching the semivariograms and honoring the state data. …

Go to article

80-Channel Multiplexer-Demultiplexer Module For Dwdm Communications Using Hybrid Awg -- Interleaver Technology, Corneliu Rablau, Lance Bredthauer

Physics Presentations And Conference Materials

Aside from the more traditional data, voice and e-mail communications, new bandwidth intensive applications in the larger consumer markets, such as music, digital pictures and movies, have led to an explosive increase in the demand for transmission capacity for optical communications networks. This has resulted in a widespread deployment of Dense Wavelength Division Multiplexing (DWDM) as a means of increasing the communications capacity by multiplexing and transmitting signals of different wavelengths (establishing multiple communication channels) through a single strand of fiber. We report on the design, assembly and characterization of a 50-GHz, 80-channel Mux-Demux module for DWDM systems. The module …

Go to article

1,3-Alternate Calix[4]Arene Nitronyl Nitroxide Tetraradical And Diradical: Synthesis, X-Ray Crystallography, Paramagnetic Nmr Spectroscopy, Epr Spectroscopy, And Magnetic Studies, Andrzej Rajca, Maren Pink, Sumit Mukherjee, Suchada Rajca, Kausik Das

Andrzej Rajca Publications

Calix[4]arenes constrained to 1,3-alternate conformation and functionalized at the upper rim with four and two nitronyl nitroxides have been synthesized, and characterized by X-ray crystallography, magnetic resonance (EPR and ¹H NMR) spectroscopy, and magnetic studies. Such calix[4]arene tetraradicals and diradicals provide scaffolds for throughbond and through-space intramolecular exchange couplings.

Includes Supplemental Data (27 pages).

Go to article

Investigating The Photoyield Of Spacecraft Materials, Jennifer Albretsen, Ryan Hoffmann, Jr Dennison

Presentations

No abstract provided.

Go to article

A Note On Targeted Maximum Likelihood And Right Censored Data, Mark J. Van Der Laan, Daniel Rubin

U.C. Berkeley Division of Biostatistics Working Paper Series

A popular way to estimate an unknown parameter is with substitution, or evaluating the parameter at a likelihood based fit of the data generating density. In many cases, such estimators have substantial bias and can fail to converge at the parametric rate. van der Laan and Rubin (2006) introduced targeted maximum likelihood learning, removing these shackles from substitution estimators, which were made in full agreement with the locally efficient estimating equation procedures as presented in Robins and Rotnitzsky (1992) and van der Laan and Robins (2003). This note illustrates how targeted maximum likelihood can be applied in right censored data …

Go to article

High-Spin States In 191, 193Au And 192Pt: Evidence For Oblate Deformation And Triaxial Shapes, Y. Oktem, D. L. Balabanski, B. Akkus, C. W. Beausang, M. Bostan, R. Cakirli, R. F. Casten, M. Danchev, M. Djongolov, M. N. Erduran, S. Erturk, K. A. Gladniski, G. Gurdal, J. Tm. Goon, D. J. Hartley, A. A. Hecht, R. Krucken, N. Nikolov, J. R. Novak, G. Rainovski, L. L. Riedinger, I. Yigitoglu, N. V. Zamfir, O. Zeidan

Physics Faculty Publications

High-spin states of ^{191, 193}Au and ¹⁹²Pt have been populated in the ¹⁸⁶W(¹¹B, xn) and ¹⁸⁶W(¹¹B, p4n) reactions, respectively, at a beam energy of 68 MeV and their γ decay was studied using the YRAST Ball detector array at the Wright Nuclear Structure Laboratory at Yale University. The level scheme of ¹⁹³Au has been extended up to I^π = 55/2⁺. New transitions were observed also in ¹⁹¹Au and ¹⁹²Pt. Particle-plus-Triaxial-Rotor (PTR) and Total Routhian Surface (TRS) calculations were performed to determine the equilibrium deformations of the …

Go to article

Comparing Three Methods For Teaching Newton’S Third Law, Trevor I. Smith, Michael C. Wittmann

Faculty Scholarship for the College of Science & Mathematics

Although guided-inquiry methods for teaching introductory physics have been individually shown to be more effective at improving conceptual understanding than traditional lecture-style instruction, researchers in physics education have not studied differences among reform-based curricula in much detail. Several researchers have developed University of Washington–style tutorial materials, but the different curricula have not been compared against each other. Our study examines three tutorials designed to improve student understanding of Newton’s third law: the University of Washington’s Tutorials in Introductory Physics (TIP), the University of Maryland’s Activity-Based Tutorials (ABT), and the Open Source Tutorials (OST) also developed at the University of Maryland. …

Go to article

Ecology And Management Of Rodents In No-Till Agriculture In Washington, Usa, Gary W. Witmer, Rodney Sayler, David Huggins, Jason Capelli

USDA Wildlife Services: Staff Publications

No-till farming is an important approach to sustainable agriculture because it can conserve soil and water resources. Unfortunately, rodent populations can thrive under no-till conditions because burrow systems are not disrupted by annual plowing and plant residues build-up on the surface, providing cover and insulation. This can result in substantial crop damage. We assessed rodent populations, habitat use, food habits, and crop damage in a no-till cropping system in Washington, USA. We also conducted preliminary trials of methods to reduce rodent populations and crop damage. In the fall, many more rodents were captured in fields with unharvested crops than in …

Go to article

Full-Text Articles in Physical Sciences and Mathematics

Shaping The Future Of Southern Nevada Conference Key Points, Ron Smith

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Concurrent Panel Session 2: Service Learning: Linking Students And Community, Daniel Mclean, Jane Pike, Seth Pollack, Fran Smith, Jean Whitney, Cheri Young

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Concurrent Panel Session 1: Sustainability In Community Development And Architecture In Las Vegas, Alfredo Fernandez-Gonzalez, Craig Galati, Mary Kay Peck, Jeff Roberts, Suzanne Sanders, Richard Serfas

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Concurrent Panel Session 2: Challenges Facing Our Youth And Aged Populations, Michele Clark, Claudia Collins, Chris Kearney, Ed Jost, Larry Mason, Carla Sloan, William Sullivan

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Concurrent Panel Session 1: Challenges Of Economic Growth & Diversification & Labor Preparation In Las Vegas, Maggie Arias-Petrel, Cedric Crear, Somer Hollingsworth, Mike Majewski, John Restrepo, Mary Riddel, Keith Schwer, Dina Titus

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Concurrent Panel Session 2: Health Challenges Facing Las Vegas, Carlos Brandenburg, Shawn Gerstenberger, Zaven Khachaturian, John Mcdonald, Dennis Pirages, Thom Reilly, Kathy Silver, Bonnie Sorenson, Carolyn B. Yucha, Maurizio Trevisan

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Concurrent Panel Session 1: Environmental Sustainability And Las Vegas, Dale A. Devitt, David E. James, Patricia Mulroy, Alan O'Neill, Thomas C. Piechota, Doug Selby, Krystyna Anne Stave, Michael Yackira, Bruce Turner

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Engaging The Community: The Metropolitan University, Jonathan Fink

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Las Vegas X 3 @ 2030-Part 1 & 2, Arthur Chris Nelson

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Shaping The Future Of Southern Nevada Conference Schedule

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Shaping The Future Of Southern Nevada Conference Photos

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Shaping The Future Of Southern Nevada Moderators & Panelists Biographies

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Shaping The Future Of Southern Nevada Conference Cover Artwork, James B. Pink

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

A High Repetition Rate Time-Of-Flight Electron Energy Analyzer, Shawn A. Hilbert, Brett E. Barwick, M. Fabrikant, Cornelis J. Uiterwaal, Herman Batelaan

C.J.G.J. Uiterwaal Publications

Microimprinting And Ferroelectric Properties Of Poly(Vinylidene Fluoride-Trifluoroethylene) Copolymer Films, Lei Zhang, Stephen Ducharme, Jiangyu Li

Stephen Ducharme Publications

Faculty Publications

Error Sensor Placement For Active Control Of An Axial Cooling Fan, Benjamin M. Shafer

Theses and Dissertations

Fept Nanodot Arrays With Perpendicular Easy Axis, Large Coercivity, And Extremely High Density, Chaehyun Kim, Thomas Loedding, Seongjin Jang, Hao Zeng, Zhen Li, Yucheng Sui, David J. Sellmyer

David Sellmyer Publications

Nonparametric And Semiparametric Group Sequential Methods For Comparing Accuracy Of Diagnostic Tests, Liansheng Tang, Scott S. Emerson, Xiao-Hua Zhou

UW Biostatistics Working Paper Series

Evidence For A Dinuclear Active Site In The Metallo-Β-Lactamase Bcii With Substoichiometric Co(Ii): A New Model For Uptake, Leticia L. Llarrull, Mariana F. Tioni, Jason M. Kowalski, Brian Bennett, Alejandro J. Vila

Physics Faculty Research and Publications

Resistivity Of Kapton E At Intermediate Time Scales Following High-Energy Electron Irradiation, S Hart, Jr Dennison, J Brunson, Jodie C. Gillespie

Presentations

A Bayesian Image Analysis Of The Change In Tumor/Brain Contrast Uptake Induced By Radiation Via Reversible Jump Markov Chain Monte Carlo, Xiaoxi Zhang, Tim Johnson, Roderick J.A. Little

The University of Michigan Department of Biostatistics Working Paper Series

Incorporating Geostatistical Constraints In Nonlinear Inverse Problems, T. C. Johnson, Partha S. Routh, Tom Clemo, Warren Barrash, William P. Clement

CGISS Publications and Presentations

80-Channel Multiplexer-Demultiplexer Module For Dwdm Communications Using Hybrid Awg -- Interleaver Technology, Corneliu Rablau, Lance Bredthauer

Physics Presentations And Conference Materials

1,3-Alternate Calix[4]Arene Nitronyl Nitroxide Tetraradical And Diradical: Synthesis, X-Ray Crystallography, Paramagnetic Nmr Spectroscopy, Epr Spectroscopy, And Magnetic Studies, Andrzej Rajca, Maren Pink, Sumit Mukherjee, Suchada Rajca, Kausik Das

Andrzej Rajca Publications

Investigating The Photoyield Of Spacecraft Materials, Jennifer Albretsen, Ryan Hoffmann, Jr Dennison

Presentations

A Note On Targeted Maximum Likelihood And Right Censored Data, Mark J. Van Der Laan, Daniel Rubin

U.C. Berkeley Division of Biostatistics Working Paper Series

Physics Faculty Publications

Comparing Three Methods For Teaching Newton’S Third Law, Trevor I. Smith, Michael C. Wittmann

Faculty Scholarship for the College of Science & Mathematics

Ecology And Management Of Rodents In No-Till Agriculture In Washington, Usa, Gary W. Witmer, Rodney Sayler, David Huggins, Jason Capelli

USDA Wildlife Services: Staff Publications