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Tight Hamilton Cycles In Random Uniform Hypergraphs, Andrzej Dudek, Alan Frieze 2011 Western Michigan University

Tight Hamilton Cycles In Random Uniform Hypergraphs, Andrzej Dudek, Alan Frieze

Department of Mathematical Sciences

In this paper we show that e/n is the sharp threshold for the existence of tight Hamilton cycles in random k -uniform hypergraphs, for all k ≥ 4. When k = 3 we show that 1/n is an asymptotic threshold. We also determine thresholds for the existence of other types of Hamilton cycles.


Self-Propulsion Of Droplets By Spatially-Varying Roughness, Mark Bowick, Zhenwei Yao 2011 Department of Physics, Syracuse University, Syracuse, NY

Self-Propulsion Of Droplets By Spatially-Varying Roughness, Mark Bowick, Zhenwei Yao

Physics

Under partial wetting conditions, making a substrate uniformly rougher enhances the wetting characteristics of the corresponding smooth substrate {--} hydrophilic systems become even more hydrophilic and hydrophobic systems even more hydrophobic. Here we show that spatial texturing of the roughness may lead to spontaneous propulsion of droplets. Individual droplets are driven toward regions of maximal roughness for intrinsically hydrophilic systems and toward regions of minimal roughness for intrinsically hydrophobic systems. Spatial texturing can be achieved by wrinkling the substrate with sinusoidal grooves whose wavelength varies in one direction (inhomogeneous wrinkling) or lithographically etching a radial pattern of fractal (Koch curve) grooves ...


Polynomial Generalizations Of Two-Variable Ramanujan Type Identities, James McLaughlin, Andrew V. Sills 2011 West Chester University of Pennsylvania

Polynomial Generalizations Of Two-Variable Ramanujan Type Identities, James Mclaughlin, Andrew V. Sills

Mathematics

No abstract provided.


Experimental Performance Evaluation Of Atp (Ad-Hoc Transport Protocol) In A Wireless Mesh Network, Xingang Zhang 2011 Brigham Young University - Provo

Experimental Performance Evaluation Of Atp (Ad-Hoc Transport Protocol) In A Wireless Mesh Network, Xingang Zhang

All Theses and Dissertations

It is well known that TCP performs poorly in wireless mesh networks. There has been intensive research in this area, but most work uses simulation as the only evaluation method; however, it is not clear whether the performance gains seen with simulation will translate into benefits on real networks. To explore this issue, we have implemented ATP (Ad-hoc Transport Protocol), a transport protocol designed specifically for wireless ad hoc networks. We have chosen ATP because it uses a radically different design from TCP and because reported results claim significant improvement over TCP. We show how ATP must be modified in ...


Study Of Radiation Damage In Lead Tungstate Crystals Using Intense High Energy Beams, Raymond Mountain, K. Khroustalev, V.A. Batarin, T. Brennan 2011 Syracuse University

Study Of Radiation Damage In Lead Tungstate Crystals Using Intense High Energy Beams, Raymond Mountain, K. Khroustalev, V.A. Batarin, T. Brennan

Physics

We report on the effects of radiation on the light output of lead tungstate crystals. The crystals were irradiated by pure, intense high energy electron and hadron beams as well as by a mixture of hadrons, neutrons and gammas. The crystals were manufactured in Bogoroditsk, Apatity (both Russia), and Shanghai (China). These studies were carried out at the 70-GeV proton accelerator in Protvino.


Measurement Of The Eta_B(1s) Mass And The Branching Fraction For Upsilon(3s) --> Gamma Eta_B(1s), Raymond Mountain, Marina Artuso, S. Blusk, Sadia Khalil 2011 Syracuse University

Measurement Of The Eta_B(1s) Mass And The Branching Fraction For Upsilon(3s) --> Gamma Eta_B(1s), Raymond Mountain, Marina Artuso, S. Blusk, Sadia Khalil

Physics

We report evidence for the ground state of bottomonium, eta_b(1S), in the radiative decay Upsilon(3S) --> gamma eta_b in e^+e^- annihilation data taken with the CLEO III detector. Using 6 million Upsilon(3S) decays, and assuming Gamma(eta_b) = 10 MeV/c^2, we obtain B(Upsilon(3S) --> gamma eta_b) = (7.1 +- 1.8 +- 1.1) X 10^{-4}, where the first error is statistical and the second is systematic. The statistical significance is about 4 sigma. The mass is determined to be M(eta_b) = 9391.8 +- 6.6 +- 2.0 MeV/c^2, which corresponds to the hyperfine ...


How Can Software Smes Become Medical Device, Fergal McCaffery, Valentine Casey, Martin McHugh 2011 Dundalk Institute of Technology

How Can Software Smes Become Medical Device, Fergal Mccaffery, Valentine Casey, Martin Mchugh

Conference papers

The amount of software content within medical devices has grown considerably over recent years and will continue to do so as the level of complexity of medical devices increase. This is driven by the fact that software is introduced to produce sophisticated medical devices that would not be possible using only hardware. This therefore presents opportunities for software development SMEs to become medical device software development organisations. However, some obstacles need to be addressed and overcome in order to make the transition from being a generic software development organisation to becoming a medical device software development organisation. This paper describes ...


Positioning Rfid Technology Into The Innovation Theory Landscape: A Multidimensional Perspective Integrating Case Study Approach, Samuel Fosso Wamba 2011 University of Wollongong

Positioning Rfid Technology Into The Innovation Theory Landscape: A Multidimensional Perspective Integrating Case Study Approach, Samuel Fosso Wamba

Dr Samuel Fosso Wamba

The main objective of this paper is to analyze RFID technology as an innovation concept through the lens of the diffusion of innovation theory. Drawing on the extant literature on the diffusion of innovations –with an emphasis on innovation classifications and the “open innovation”–, as well as on an analysis of a longitudinal case study conducted in a Canadian beverage supply chain currently exploring the potential of RFID technology, this research study suggests that RFID technology is a multidimensional concept than encompasses the traditional classifications of innovations (e.g., technological and organizational innovation, product and process innovation, incremental and radical ...


Rfid Deployment And Use In The Dairy Value Chain: Applications, Current Issues And Future Research Directions, S. F. Wamba, Alison Wicks 2011 University of Wollongong

Rfid Deployment And Use In The Dairy Value Chain: Applications, Current Issues And Future Research Directions, S. F. Wamba, Alison Wicks

Dr Samuel Fosso Wamba

RFID technology is currently considered as a key enabler of supply chain transformation. However, very little has been written about the deployment and use of RFID in the dairy industry. Drawing on an extensive literature review and a case example, this exploratory study seeks to present current applications and issues related to RFID’s adoption in the dairy industry and discuss future research directions.


Unveiling The Potential Of Rfid-Enabled Intelligent Patient Management : Results Of A Delphi Study, S. F. Wamba, E. W. T. Ngai 2011 University of Wollongong

Unveiling The Potential Of Rfid-Enabled Intelligent Patient Management : Results Of A Delphi Study, S. F. Wamba, E. W. T. Ngai

Dr Samuel Fosso Wamba

Information technology (IT) in general, and radio frequency identification (RFID) technology in particular, are considered as key enablers of healthcare sector transformation in terms of better quality of care, improved patient management, and increased healthcare efficiency and effectiveness. There is, however, a shortage of studies on the impact of RFID technology on patient management-related processes. This study intends to fill this knowledge gap in literature by unveiling the potential of RFID-enabled intelligent patient management. Twelve patient management-related processes are identified, followed by the assessment of the impact of RFID on the said processes by a panel of experts using a ...


Hamilton-Waterloo Problem With Triangle And C9 Factors, David C. Kamin 2011 Michigan Technological University

Hamilton-Waterloo Problem With Triangle And C9 Factors, David C. Kamin

Dissertations, Master's Theses and Master's Reports - Open

The Hamilton-Waterloo problem and its spouse-avoiding variant for uniform cycle sizes asks if Kv, where v is odd (or Kv - F, if v is even), can be decomposed into 2-factors in which each factor is made either entirely of m-cycles or entirely of n-cycles. This thesis examines the case in which r of the factors are made up of cycles of length 3 and s of the factors are made up of cycles of length 9, for any r and s. We also discuss a constructive solution to the general (m,n) case which fixes r and s.


When Does Combining Markers Improve Classification Performance And What Are Implications For Practice?, Aasthaa Bansal, Margaret Sullivan Pepe 2011 University of Washington

When Does Combining Markers Improve Classification Performance And What Are Implications For Practice?, Aasthaa Bansal, Margaret Sullivan Pepe

UW Biostatistics Working Paper Series

When an existing standard marker does not have sufficient classification accuracy on its own, new markers are sought with the goal of yielding a combination with better performance. The primary criterion for selecting new markers is that they have good performance on their own and preferably be uncorrelated with the standard. Most often linear combinations are considered. In this paper we investigate the increment in performance that is possible by combining a novel continuous marker with a moderately performing standard continuous marker under a variety of biologically motivated models for their joint distribution. We find that an uncorrelated continuous marker ...


Study Of The Shrinkage Caused By Holographic Grating Formation In Acrylamide Based Photopolymer Film, Mohesh Moothanchery, Izabela Naydenova, Vincent Toal 2011 Dublin Institute of Technology

Study Of The Shrinkage Caused By Holographic Grating Formation In Acrylamide Based Photopolymer Film, Mohesh Moothanchery, Izabela Naydenova, Vincent Toal

Articles

We study the shrinkage in acrylamide based photopolymer by measuring the Bragg detuning of transmission diffraction gratings recorded at different slant angles and at different intensities for a range of spatial frequencies. Transmission diffraction gratings of spatial frequencies 500, 1000, 1500 and 2000 lines/mm were recorded in an acrylamide based photopolymer film having 60 ± 5 μm thickness. The grating thickness and the final slant angles were obtained from the angular Bragg selectivity curve and hence the shrinkage caused by holographic recording was calculated. The shrinkage of the material was evaluated for three different recording intensities 1, 5 and 10 ...


Excitation Of Zero-Frequency Magnetic Field-Aligned Currents By Ionospheric Heating, A V. Streltsov, T R. Pedersen 2011 Dartmouth College

Excitation Of Zero-Frequency Magnetic Field-Aligned Currents By Ionospheric Heating, A V. Streltsov, T R. Pedersen

Open Dartmouth: Faculty Open Access Articles

Time-dependent, three-dimensional numerical simulations of the reduced MHD model describing shear Alfve ́n waves in the magnetosphere provide an interesting prediction superficially similar to results of several iono- spheric heating experiments conducted at high altitudes. In these experiments, heating of the ionospheric F-region with a constant/zero-frequency beam of HF waves causes luminous structures in the ionosphere in the form of a ring or a solid spot with a characteristic size comparable to the size of the heated spot. Simulations suggest that spots/rings or similar optical appearance might be associated with a magnetic field- aligned current system produced by ...


Hierarchical Probit Models For Ordinal Ratings Data, Allison M. Butler 2011 Brigham Young University - Provo

Hierarchical Probit Models For Ordinal Ratings Data, Allison M. Butler

All Theses and Dissertations

University students often complete evaluations of their courses and instructors. The evaluation tool typically contains questions about the course and the instructor on an ordinal Likert scale. We assess instructor effectiveness while adjusting for known confounders. We present a probit regression model with a latent variable to measure the instructor effectiveness accounting for student specific covariates, such as student grade in the course, high school and university GPA, and ACT score.


Effect Of Freshman Chemistry On Student Performance In Sophomore Engineering Courses, Michael A. Collura, Shannon Ciston, Nancy Ortins Savage 2011 University of New Haven

Effect Of Freshman Chemistry On Student Performance In Sophomore Engineering Courses, Michael A. Collura, Shannon Ciston, Nancy Ortins Savage

Chemistry and Chemical Engineering Faculty Publications

The role of first year chemistry courses in engineering programs varies somewhat across programs and disciplines. Clearly most engineering majors will encounter chemistry topics of a general nature in some of their upper-level course work. The purpose of requiring chemistry in the first year, however, goes well beyond learning chemical concepts. As a quantitative science, chemistry requires the use of math, principally algebra, on a regular basis in solving various problems. Students should gain an appreciation of the importance of units in solving problems should come to understand the difference between implicit and explicit properties and should develop other quantitative ...


An Energy Use And Emissions Inventory, Mark A. Gathany, Robert Chasnov 2011 Cedarville University

An Energy Use And Emissions Inventory, Mark A. Gathany, Robert Chasnov

Science and Mathematics Faculty Presentations

Maintaining a 400-acre campus which supports the education of 3000 students requires energy. Data were gathered from across campus as part of a faculty research project and in conjunction with an undergraduate course. The project was initiated in order to develop an energy usage and emissions inventory for the University while at the same offering students exposure to the process. Inventory inputs included stationary consumption (burning of natural gas to supply heat), electricity purchased, campus vehicle usage (gasoline consumption), commuter vehicle usage (faculty and staff only), and transportation and distribution (T&D) expenses. Whereas the student population has increased by ...


Cutting Away From The Power Grid, Robert Chasnov, Mark A. Gathany 2011 Cedarville University

Cutting Away From The Power Grid, Robert Chasnov, Mark A. Gathany

Science and Mathematics Faculty Presentations

One of the course objectives for the junior-level Thermodynamics course being taught to our mechanical engineering (ME) majors is “students will analyze engineering systems to evaluate their thermodynamic designs”. The Rankine Cycle and its application to power plants were studied intensely. Students were provided with the results of the campus Energy Usage and Emissions Inventory. Some key data which they noted was (1) 74% of the campus energy usage was electricity purchased from the local distributor (2007), (2) roughly 90% of the campus energy usage over the past 10 years was attributed to either purchased electricity or purchased natural gas ...


Seasonal Variability And Dynamics Of Mesospheric Gravity Waves Over The Andes, Neal R. Criddle, Michael J. Taylor, P. D. Pautet, Y. Zhao 2011 Utah State University

Seasonal Variability And Dynamics Of Mesospheric Gravity Waves Over The Andes, Neal R. Criddle, Michael J. Taylor, P. D. Pautet, Y. Zhao

Graduate Student Posters

The ALO is a new facility developed for atmospheric research, located at the foot of the Andes mountain range in Cerro Pachon, Chile (30.2°S, 70.7°W). As part of a collaborative program, Utah State has a mesospheric temperature mapper (MTM) on site, which is used to study short period gravity wave dynamics and temperature variations in the mesosphere-lower thermosphere region. The MTM began taking measurements of the OH(6,2) and O2(0,1) spectral bands in August 2009 and a complete profile of seasonal variation in gravity wave characteristics has been created for August 2009 through ...


Establishing Confidence In Surface Wave Determined Soil Profiles, Paul Michaels 2011 Boise State University

Establishing Confidence In Surface Wave Determined Soil Profiles, Paul Michaels

CGISS Publications and Presentations

Surface waves can be used to determine the shear velocity profile from the ground surface to some depth limited by the spectral band of the seismic source. A number of factors influence the uncertainties of the determined profile. The field acquisition factors include the deployment geometry of geophones, the spectral characteristics of the geophones, recording instruments, and seismic source. A key data processing factor is the determination of a dispersion curve from the field recordings. Finally, there are important choices in conducting the inversion of the dispersion curve which leads to the final soil profile. Even if the field factors ...


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