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Articles 141061 - 141090 of 303071
Full-Text Articles in Physical Sciences and Mathematics
Survival Analysis With Functions Of Mis-Measured Covariate Histories: The Case Of Chronic Air Pollution Exposure In Relation To Mortality In The Nurses' Health Study, Xiaomei Liao, Molin Wang, Jaime E. Hart, Francine Laden, Donna Spiegelman
Survival Analysis With Functions Of Mis-Measured Covariate Histories: The Case Of Chronic Air Pollution Exposure In Relation To Mortality In The Nurses' Health Study, Xiaomei Liao, Molin Wang, Jaime E. Hart, Francine Laden, Donna Spiegelman
Harvard University Biostatistics Working Paper Series
Environmental epidemiologists are often interested in estimating the effect of functions of time-varying exposure histories, such as the 12-month moving average, in relation to chronic disease incidence or mortality. The individual exposure measurements that comprise such an exposure history are usually mis-measured, at least moderately, and, often, more substantially. To obtain unbiased estimates of Cox model hazard ratios for these complex mis-measured exposure functions, an extended risk set regression calibration (RRC) method for Cox models is developed and applied to a study of long-term exposure to the fine particulate matter ($PM_{2.5}$) component of air pollution in relation to all-cause mortality …
Soil Chemistry On Watershed 1: 1998 - 2014, Chris E. Johnson
Soil Chemistry On Watershed 1: 1998 - 2014, Chris E. Johnson
Chris E Johnson
No abstract provided.
Gazelle Companies: What Is So Special About The 20% Threshold?, Olga Kosheleva, Vladik Kreinovich
Gazelle Companies: What Is So Special About The 20% Threshold?, Olga Kosheleva, Vladik Kreinovich
Departmental Technical Reports (CS)
In business analysis, a special emphasis is placed on "gazelles", companies that grow by at least 20% per year for several years (usually four). While this 20% threshold is somewhat supported by empirical research, from the theoretical viewpoint, it is not clear what is so special about this value. In this paper, we provide a possible explanation for this empirical fact.
Al-Sijistani's And Maimonides's Double Negation Theology Explained By Constructive Logic, Olga Kosheleva, Vladik Kreinovich
Al-Sijistani's And Maimonides's Double Negation Theology Explained By Constructive Logic, Olga Kosheleva, Vladik Kreinovich
Departmental Technical Reports (CS)
Famous medieval philosophers Al-Sijistani and Maimonides argued that the use of double negation helps us to better understand issues related to theology. To a modern reader, however, their arguments are somewhat obscure and unclear. We show that these arguments can be drastically clarified if we take into account the 20 century use of double negation in constructive logic.
Using Beaver Works To Estimate Colony Activity In Boreal Landscapes, Carol A. Johnston, Steve K. Windels
Using Beaver Works To Estimate Colony Activity In Boreal Landscapes, Carol A. Johnston, Steve K. Windels
Natural Resource Management Faculty Publications
Beaver ponds and beaver-impounded vegetation are indicators of past or present beaver activity that can be detected from aerial photography. A method to quantitatively relate these beaver works with the density of active beaver colonies could benefit beaver management, particularly in areas lacking beaver population data. We compared historical maps (1961–2006) of beaver works at Voyageurs National Park, Minnesota, USA with concurrent aerial surveys of beaver colonies. We tested 2 landscape-scale models of beaver colony density previously developed for a period of beaver population expansion (1940–1986), but they failed to predict colony density after 1986, a period of declining beaver …
Going Green, Creating Value, Singapore Management University
Going Green, Creating Value, Singapore Management University
Perspectives@SMU
Green packaging is better for the environment but costs more. Will companies and consumers pay for the benefits?
Business Intelligence, Data And Analytics, Singapore Management University
Business Intelligence, Data And Analytics, Singapore Management University
Perspectives@SMU
Data can be used to predict outcomes but quality data is essential
Analytics For Business, Consumers And Social Insights, Bhavish Sood
Analytics For Business, Consumers And Social Insights, Bhavish Sood
Library Events
The speaker shared with us on best practice, future outlook and opportunities of analytical applications. The speaker has a strong research interest on how business applications and business intelligence software are being consumed on smartphones and media tablets.
The Sluggs Survey: Multipopulation Dynamical Modelling Of The Elliptical Galaxy Ngc 1407 From Stars And Globular Clusters, Vincenzo Pota, Aaron Romanowsky, Jean Brodie, Jorge Peñarrubia, Duncan Forbes, Nicola Napolitano, Caroline Foster, Matthew Walker, Jay Strader, Joel Roediger
The Sluggs Survey: Multipopulation Dynamical Modelling Of The Elliptical Galaxy Ngc 1407 From Stars And Globular Clusters, Vincenzo Pota, Aaron Romanowsky, Jean Brodie, Jorge Peñarrubia, Duncan Forbes, Nicola Napolitano, Caroline Foster, Matthew Walker, Jay Strader, Joel Roediger
Faculty Publications
No abstract provided.
Soil Chemistry On Watershed 1: 1998 - 2014, Chris E. Johnson
Soil Chemistry On Watershed 1: 1998 - 2014, Chris E. Johnson
Civil and Environmental Engineering
No abstract provided.
Evolution Of Magnetism In Single-Crystal Ca2Ru1−XIrXO4(0≤X≤0.65), Shujuan Yuan, Jsaminka Terzic, J. C. Wang, L. Li, Saicharan Aswartham, W. H. Song, F. Ye, Gang Cao
Evolution Of Magnetism In Single-Crystal Ca2Ru1−XIrXO4(0≤X≤0.65), Shujuan Yuan, Jsaminka Terzic, J. C. Wang, L. Li, Saicharan Aswartham, W. H. Song, F. Ye, Gang Cao
Physics and Astronomy Faculty Publications
We report structural, magnetic, transport, and thermal properties of single-crystal Ca2Ru1−xIrxO4(0≤x≤0.65). Ca2RuO4 is a structurally driven Mott insulator with a metal-insulator transition at TMI=357K, which is well separated from antiferromagnetic order at TN=110K. Substitution of a 5d element, Ir, for Ru enhances spin-orbit coupling and locking between the structural distortions and magnetic moment canting. Ir doping intensifies the distortion or rotation of Ru/IrO6 octahedra and induces weak ferromagnetic behavior along the c axis. In particular, Ir doping suppresses TN but …
Moments Of The Neutron G2 Structure Function At Intermediate Q2, Wolfgang Korsch, P. Solvignon, N. Liyanage, J.-P. Chen, Seonho Choi, K. Slifer, K. Aniol, T. Averett, W. Boeglin, A. Camsonne, G. D. Cates
Moments Of The Neutron G2 Structure Function At Intermediate Q2, Wolfgang Korsch, P. Solvignon, N. Liyanage, J.-P. Chen, Seonho Choi, K. Slifer, K. Aniol, T. Averett, W. Boeglin, A. Camsonne, G. D. Cates
Physics and Astronomy Faculty Publications
We present new experimental results for the 3He spin structure function g2 in the resonance region at Q2 values between 1.2 and 3.0(GeV/c)2. Spin dependent moments of the neutron were extracted. Our main result, the inelastic contribution to the neutron d2 matrix element, was found to be small at ⟨Q2⟩=2.4(GeV/c)2 and in agreement with the lattice QCD calculation. The Burkhardt-Cottingham sum rule for 3He and the neutron was tested with the measured data and using the Wandzura-Wilczek relation for the low x unmeasured region.
Beam-Energy-Dependent Two-Pion Interferometry And The Freeze-Out Eccentricity Of Pions Measured In Heavy Ion Collisions At The Star Detector, J. Kevin Adkins, Renee Fatemi, Suvarna Ramachandran, G. Webb, L. Adamczyk, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, I. Alekseev, J. Alford, C. D. Anson, A. Aparin
Beam-Energy-Dependent Two-Pion Interferometry And The Freeze-Out Eccentricity Of Pions Measured In Heavy Ion Collisions At The Star Detector, J. Kevin Adkins, Renee Fatemi, Suvarna Ramachandran, G. Webb, L. Adamczyk, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, I. Alekseev, J. Alford, C. D. Anson, A. Aparin
Physics and Astronomy Faculty Publications
We present results of analyses of two-pion interferometry in Au+Au collisions at √SNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV measured in the STAR detector as part of the BNL Relativistic Heavy Ion Collider Beam Energy Scan program. The extracted correlation lengths (Hanbury-Brown–Twiss radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass (mT) of the particles. The azimuthal analysis allows extraction of the eccentricity of the entire fireball at kinetic freeze-out. The energy dependence of this observable is expected to be sensitive …
Smooth And Fast Versus Instantaneous Quenches In Quantum Field Theory, Sumit R. Das, Damián A. Galante, Robert C. Myers
Smooth And Fast Versus Instantaneous Quenches In Quantum Field Theory, Sumit R. Das, Damián A. Galante, Robert C. Myers
Physics and Astronomy Faculty Publications
We examine in detail the relationship between smooth fast quantum quenches, characterized by a time scale δt, and instantaneous quenches, within the framework of exactly solvable mass quenches in free scalar field theory. Our earlier studies [1, 2] highlighted that the two protocols remain distinct in the limit δt → 0 because of the relation of the quench rate to the UV cut-off, i.e., 1/δt ≪ Λ always holds in the fast smooth quenches while 1/δt ∼ Λ for instantaneous quenches. Here we study UV finite quantities like correlators at …
2015 (Summer), University Of Dayton. Department Of Mathematics
2015 (Summer), University Of Dayton. Department Of Mathematics
Colloquia
Abstracts of the talks given at the 2015 Summer Colloquium.
2015 Summer Research Symposium Abstract Book, Trinity College, Hartford Connecticut
2015 Summer Research Symposium Abstract Book, Trinity College, Hartford Connecticut
Science Symposia Abstracts
2015 Summer volume of abstracts for science research projects conducted by students at Trinity College.
A Review Of "Climate Justice: Vulnerability And Protection," By Henry Shue, Edwardo Rhodes
A Review Of "Climate Justice: Vulnerability And Protection," By Henry Shue, Edwardo Rhodes
Indiana Journal of Global Legal Studies
Henry Shue's Climate Justice: Vulnerability and Protection offers an extremely useful and readable guide to the key challenges, workable objectives, and possible responses to a major-if not the major-global problem faced today. For anyone interested or working in the area of international carbon emission control and remediation, this book places the subject in a combined philosophical and economic development framework while imposing an overarching principle of fairness.
Henry Shue presents an interesting and informative collection of essays and articles on climate change and the need for a method of global response to deal with the prickly issues of global warming. …
Chemistry & Biochemistry Newsletter, Department Of Chemistry & Biochemistry, South Dakota State University
Chemistry & Biochemistry Newsletter, Department Of Chemistry & Biochemistry, South Dakota State University
Chemistry & Biochemistry Newsletter: 2002-2015
Inside
Page 2 Prototype Detects Cyanide Poisoning in 70 Seconds
Page 3 Department TAs Receive CETL Awards; Li Li Ji is Lardy Distinguished Lecturer
Page 4 Fulbright Scholar Uses Soil Components to Trap Pollutants; 2015 Graduates
Page 5 ASBMB Accredits CBC’s Biochemistry Major; Recent Faculty Publications
Page 6 Reaching Out to the Community
Page 7 Faculty and Student News; Alumni News
Page 8 Raynie Becomes an LCGC Editor; Retired Department Head Featured
Enriching Gender In Per: A Binary Past And A Complex Future, Adrienne L. Traxler, Ximena C. Cid, Jennifer Blue, Ramón Barthelemy
Enriching Gender In Per: A Binary Past And A Complex Future, Adrienne L. Traxler, Ximena C. Cid, Jennifer Blue, Ramón Barthelemy
Physics Faculty Publications
In this article, we draw on previous reports from physics, science education, and women's studies to propose a more nuanced treatment of gender in physics education research (PER). A growing body of PER examines gender differences in participation, performance, and attitudes toward physics. We have three critiques of this work: (1) it does not question whether the achievements of men are the most appropriate standard, (2) individual experiences and student identities are undervalued, and (3) the binary model of gender is not questioned. Driven by these critiques, we propose a conception of gender that is more up-to-date with other fields …
Tourism Portal, Venkata Rao Daggubati, Yu-Chuan Wang, Lokesh Koneru
Tourism Portal, Venkata Rao Daggubati, Yu-Chuan Wang, Lokesh Koneru
All Capstone Projects
In the flexibility of the uses the interface has been developed a graphics concept in mind, associated through a browses interface. The GUI’S at the top level have been categorized as 1. Administrative user interface 2. The operational or generic user interface.
The administrative user interface concentrates on the consistent information that is practically, part of the organizational activities and which needs proper authentication for the data collection. The interfaces help the administrations with all the transactional states like Data insertion, Data deletion and Date updation along with the extensive data search capabilities. The operational or generic user interface helps …
Secure Transmission And Retrieval Of Images In Conjunction With Steganography Using Chaos In Nonlinear Acousto-Optic Feedback, Monish Ranjan Chatterjee, Fares S. Almehmadi
Secure Transmission And Retrieval Of Images In Conjunction With Steganography Using Chaos In Nonlinear Acousto-Optic Feedback, Monish Ranjan Chatterjee, Fares S. Almehmadi
Electrical and Computer Engineering Faculty Publications
Digital images are encrypted onto a chaotic carrier in a Bragg cell under hybrid nonlinear feedback and secure data is embedded into the system via steganography. System robustness (with and without channel noise) is analyzed vis-a-vis information security.
A New Species Of The Ceratioid Anglerfish Genus Lasiognathus Regan (Lophiiformes: Oneirodidae) From The Northern Gulf Of Mexico, Theodore W. Pietsch, Tracey Sutton
A New Species Of The Ceratioid Anglerfish Genus Lasiognathus Regan (Lophiiformes: Oneirodidae) From The Northern Gulf Of Mexico, Theodore W. Pietsch, Tracey Sutton
Marine & Environmental Sciences Faculty Articles
A new species of the deep-sea ceratioid anglerfish genus Lasiognathus Regan (family Oneirodidae) is described on the basis of three female specimens collected in the northern Gulf of Mexico. Not especially similar to any of the five previously described members of the genus, the new species is unique in having a cylindrical, internally pigmented, anterior escal appendage and a pair of elongate distal escal appendages. The new species is diagnosed and described, and a revised key to the species of the genus is provided.
Droughtscape- Summer 2015, Kelly Smith
Droughtscape- Summer 2015, Kelly Smith
Droughtscape, Quarterly Newsletter of NDMC, 2007-
CONTENTS
Director’s column.........................1
New Drought Risk Management Research Center ......................... 3
Second quarter 2015 climate summary ...................................... 4
Second quarter 2015 impacts summary ...................................... 6
Caribbean region an innovator in drought early warning..................8
Wind River Reservation tribes move toward drought planning ............... 10
Ranchers, U.S. Forest Service, University of Arizona co-develop drought plans.............................12
Summer blockbuster from CoCoRaHS: Assessing Drought in the U.S........................14
Western states drought coordinators meet......................14
Dump It Out! An Enquiry Into Consumers’ Everyday Fashion Discourses Through Handbag, Magnum Man Lok Lam, Elita Yee Nee Lam, Wing-Sun Liu
Dump It Out! An Enquiry Into Consumers’ Everyday Fashion Discourses Through Handbag, Magnum Man Lok Lam, Elita Yee Nee Lam, Wing-Sun Liu
Faculty of Design & Environment (THEi)
Handbag is an iconic fashion accessory in our material culture. Following the tradition of representational thinking, this article introduces the handbag as an epistemic consumption object through which to investigate consumer experiences, practices and identity construction in relation to everyday lived discourses. The handbag research involves an examination of participants’ personal belongings inside their bags together with phenomenological interviews concerning the associated subjective experiences along with these material objects. We demonstrate how these material possessions become the subject of the research that facilitates multiple conversations between researchers and participants as to introspect, evaluate and interpret the significance of symbolic consumption …
Informing And Performing: A Study Comparingadaptive Learning To Traditional Learning, Meg Coffin Murray, Jorge Perez
Informing And Performing: A Study Comparingadaptive Learning To Traditional Learning, Meg Coffin Murray, Jorge Perez
Faculty Articles
Technology has transformed education, perhaps most evidently in course delivery options. However, compelling questions remain about how technology impacts learning. Adaptive learning tools are technology-based artifacts that interact with learners and vary presentation based upon that interaction. This study examines completion rates and exercise scores for students assigned adaptive learning exercises and compares them to completion rates and quiz scores for students assigned objective-type quizzes in a university digital literacy course. Current research explores the hypothesis that adapting instruction to an individual’s learning style results in better learning outcomes. Computer technology has long been seen as an answer to the …
Modeling Storm Surge And Inundation In Washington, Dc, During Hurricane Isabel And The 1936 Potomac River Great Flood, Harry V. Wang, Jon Derek Loftis, David R. Forrest, Wade Smith, Barry Stamey
Modeling Storm Surge And Inundation In Washington, Dc, During Hurricane Isabel And The 1936 Potomac River Great Flood, Harry V. Wang, Jon Derek Loftis, David R. Forrest, Wade Smith, Barry Stamey
VIMS Articles
Abstract: Washington, DC, the capital of the U.S., is located along the Upper Tidal Potomac River, where a reliable operational model is needed for making predictions of storm surge and river-induced flooding. We set up a finite volume model using a semi-implicit, Eulerian-Lagrangian scheme on a base grid (200 m) and a special feature of sub-grids (10 m), sourced with high-resolution LiDAR data and bathymetry surveys. The model domain starts at the fall line and extends 120 km downstream to Colonial Beach, VA. The model was used to simulate storm tides during the 2003 Hurricane Isabel. The water level measuring …
Stable Isotopes Of Hydrothermal Carbonate Minerals In The Butte Porphyry-Lode Deposits, Montana, Ryan Stevenson
Stable Isotopes Of Hydrothermal Carbonate Minerals In The Butte Porphyry-Lode Deposits, Montana, Ryan Stevenson
Graduate Theses & Non-Theses
The stable isotopic compositions of over 90 hydrothermal carbonate minerals in the Butte porphyry-lode system were analyzed. These samples came from the underground workings as well as the active Continental Pit area. Most material came from polymetallic “Main Stage” veins which post-date the porphyry Cu-Mo mineralization of Butte. Some samples from late calcite-stellerite veins were also included in the study. Rhodochrosite d13C and d18O values range from -8.3 to -2.9‰ (average of -6.7±1.0‰) and -1.8 to 12.8‰ (average of 3.6 ±3.4‰) respectively, while calcite d13C and d18O values range from -9.0 to …
Haverstraw Bay Benthic Habitat Characterization, Robert M. Cerrato, Alison M. Flanagan, Roger D. Flood
Haverstraw Bay Benthic Habitat Characterization, Robert M. Cerrato, Alison M. Flanagan, Roger D. Flood
School of Marine & Atmospheric Sciences Faculty Publications
High-resolution backscatter and bathymetric maps created by multibeam and sidescan sonar surveys were used to identify five different seafloor bottom types within Haverstraw Bay. Grab samples were collected within these areas to characterize sediment properties and macrofauna. Selected sampling locations were revisited and seafloor images were obtained with an HD underwater camera. Multivariate analysis was used to identify the most important factors explaining variations in community structure. Results indicated that categorical variables defining bottom types, grain size, and water depth can explain about 42% of community structure variation. In addition, shell length data collected for Rangia cuneata, an introduced …
Ultrarelativistic Decoupling Transformation For Generalized Dirac Equations, J. H. Noble, Ulrich D. Jentschura
Ultrarelativistic Decoupling Transformation For Generalized Dirac Equations, J. H. Noble, Ulrich D. Jentschura
Physics Faculty Research & Creative Works
The Foldy-Wouthuysen transformation is known to uncover the nonrelativistic limit of a generalized Dirac Hamiltonian, lending an intuitive physical interpretation to the effective operators within Schrö dinger-Pauli theory. We here discuss the opposite, ultrarelativistic limit which requires the use of a fundamentally different expansion where the leading kinetic term in the Dirac equation is perturbed by the mass of the particle and other interaction (potential) terms, rather than vice versa. The ultrarelativistic decoupling transformation is applied to free Dirac particles (in the Weyl basis) and to high-energy tachyons, which are faster-than-light particles described by a fully Lorentz-covariant equation. The effective …
Solar: Scalable Online Learning Algorithms For Ranking, Jialei Wang, Ji Wan, Yongdong Zhang, Steven C. H. Hoi
Solar: Scalable Online Learning Algorithms For Ranking, Jialei Wang, Ji Wan, Yongdong Zhang, Steven C. H. Hoi
Research Collection School Of Computing and Information Systems
Traditional learning to rank methods learn ranking models from training data in a batch and offline learning mode, which suffers from some critical limitations, e.g., poor scalability as the model has to be retrained from scratch whenever new training data arrives. This is clearly nonscalable for many real applications in practice where training data often arrives sequentially and frequently. To overcome the limitations, this paper presents SOLAR- a new framework of Scalable Online Learning Algorithms for Ranking, to tackle the challenge of scalable learning to rank. Specifically, we propose two novel SOLAR algorithms and analyze their IR measure bounds theoretically. …