Digital Commons Network^™

Issues Related To Combining Multiple Speciated Pm2.5 Data Sources In Spatio-Temporal Exposure Models For Epidemiology: The Npact Case Study, Sun-Young Kim, Lianne Sheppard, Timothy V. Larson, Joel Kaufman, Sverre Vedal

UW Biostatistics Working Paper Series

Background: Regulatory monitoring data have been the most common exposure data resource in studies of the association between long-term PM_2.5 components and health. However, data collected for regulatory purposes may not be compatible with epidemiological study.

Objectives: We aimed to explore three important features of the PM_2.5 component monitoring data obtained from multiple sources to combine all available data for developing spatio-temporal prediction models in the National Particle Component and Toxicity (NPACT) study.

Methods: The NPACT monitoring data were collected in an extensive monitoring campaign targeting cohort participants. The regulatory monitoring data were obtained from the Chemical Speciation …

Prediction Of Fine Particulate Matter Chemical Components For The Multi-Ethnic Study Of Atherosclerosis Cohort: A Comparison Of Two Modeling Approaches, Sun-Young Kim, Lianne Sheppard, Silas Bergen, Adam A. Szpiro, Paul D. Sampson, Joel Kaufman, Sverre Vedal

UW Biostatistics Working Paper Series

Recent epidemiological cohort studies of the health effects of PM_2.5 have developed exposure estimates from advanced exposure prediction models. Such models represent spatial variability across participant residential locations. However, few cohort studies have developed exposure predictions for PM_2.5 components. We used two exposure modeling approaches to obtain long-term average predicted concentrations for four PM_2.5 components: sulfur, silicon, and elemental and organic carbon (EC and OC). The models were specifically developed for the Multi-Ethnic Study of Atherosclerosis (MESA) cohort as a part of the National Particle Component and Toxicity (NPACT) study. The spatio-temporal model used 2-week average measurements …

2013 Fall Engr333 Project Final Report, 2013 Fall Engr333

ENGR 333

During the fall of 2013, the Engineering 333 class was asked the question, “what would it take for Calvin College to operate a biofuel vehicle from campus resources?” The three primary considerations included:

• Determining the optimal biofuel feedstock in terms of availability, transportation, and processing.
• Selecting a biofuel vehicle for conversion or purchase to operate on the selected feedstock.
• Designing the infrastructure and process required for operating the selected biofuel vehicle. The design and research described below proposes an environmentally sustainable and cost-effective method for integrating a biofuel vehicle into Calvin’s existing infrastructure.

Supernova Neutrino Nucleosynthesis Of Light Elements With Neutrino Oscillations, Takashi Yoshida, Toshitaka Kajino, Hidekazu Yokomakura, Keiichi Kimura, Akira Takamura, Dieter H. Hartmann

Publications

Light element synthesis in supernovae through neutrino-nucleus interactions, i.e., the ν-process, is affected by neutrino oscillations in the supernova environment. There is a resonance of 13-mixing in the O/C layer, which increases the rates of charged-current ν-process reactions in the outer He-rich layer. The yields of 7Li and 11B increase by about a factor of 1.9 and 1.3, respectively, for a normal mass hierarchy and an adiabatic 13-mixing resonance, compared to those without neutrino oscillations. In the case of an inverted mass hierarchy and a non-adiabatic 13-mixing resonance, the increase in the 7Li and 11B yields is much smaller. Observations …

Direct Coupling Of Photonic Modes And Surface Plasmon Polaritons Observed In 2-Photon Peem, Robert Campbell Word, Joseph Fitzgerald, Rolf Könenkamp

Physics Faculty Publications and Presentations

We report the direct microscopic observation of optical energy transfer from guided photonic modes in an indium tin oxide (ITO) thin film to surface plasmon polaritons (SPP) at the surfaces of a single crystalline gold platelet. The photonic and SPP modes appear as an interference pattern in the photoelectron emission yield across the surface of the specimen. We explore the momentum match between the photonic and SPP modes in terms of simple waveguide theory and the three-layer slab model for bound SPP modes of thin metal films. We show that because the gold is thin (30- 40 nm), two SPP …

Parallel Implementation Of Moving Averages On Rmesh, John Jenq

Department of Computer Science Faculty Scholarship and Creative Works

Moving averages are important financial indicators. There are short term moving average and long term moving averages. The interaction of the short term moving averages and long term averages give analyst the good clues about the direction of future assets performance. In this paper, the computation of two popular moving averages are discussed. The n-day simple moving average treats all past n days' closing prices equally while the n-day exponential moving average assigns more weight to most recent day and least weight to lease recent day closing price when form the computation formula. Both methods can be done in O(logN) …

Common Fundamental Domains For Lattices Of The Same Volume, Ashley Erwin

Honors Program Theses and Projects

No abstract provided.

Rapid Generation Of Light Beams Carrying Orbital Angular Momentum, Mohammad Mirhosseini, Omar S. Magaña-Loaiza, Changchen Chen, Brandon Rodenburg, Mehul Malik, Robert W. Boyd

Faculty Publications

We report a technique for encoding both amplitude and phase variations onto a laser beam using a single digital micro-mirror device (DMD). Using this technique, we generate Laguerre-Gaussian and vortex orbital-angular-momentum (OAM) modes, along with modes in a set that is mutually unbiased with respect to the OAM basis. Additionally, we have demonstrated rapid switching among the generated modes at a speed of 4 kHz, which is much faster than the speed regularly achieved by phase-only spatial light modulators (SLMs). The dynamic control of both phase and amplitude of a laser beam is an enabling technology for classical communication and …

Rapid Generation Of Light Beams Carrying Orbital Angular Momentum, Mohammad Mirhosseini, Omar S. Magaña-Loaiza, Changchen Chen, Brandon Rodenburg, Mehul Malik, Robert W. Boyd

Faculty Publications

We report a technique for encoding both amplitude and phase variations onto a laser beam using a single digital micro-mirror device (DMD). Using this technique, we generate Laguerre-Gaussian and vortex orbital-angular-momentum (OAM) modes, along with modes in a set that is mutually unbiased with respect to the OAM basis. Additionally, we have demonstrated rapid switching among the generated modes at a speed of 4 kHz, which is much faster than the speed regularly achieved by phase-only spatial light modulators (SLMs). The dynamic control of both phase and amplitude of a laser beam is an enabling technology for classical communication and …

Reduced Row Echelon Form And Non-Linear Approximation For Subspace Segmentation And High-Dimensional Data Clustering, Akram Aldroubi, Ali Sekmen

Computer Science Faculty Research

Given a set of data W={w1,…,wN}∈RD drawn from a union of subspaces, we focus on determining a nonlinear model of the form U=⋃i∈ISi, where {Si⊂RD}i∈I is a set of subspaces, that is nearest to W. The model is then used to classify W into clusters. Our approach is based on the binary reduced row echelon form of data matrix, combined with an iterative scheme based on a non-linear approximation method. We prove that, in absence of noise, our approach can find the number of subspaces, their dimensions, and an orthonormal basis for each subspace Si. We provide a comprehensive analysis …

Synthesis, Structural Variations And Trends In The Properties Of Unique Dinuclear And Polynuclear Complexes Of Bis(Pyrazolyl)Methane Ligands In Solid State And Solution, Andrea Eva Pascui

Theses and Dissertations

The semi-rigid ligands, p-[CH(pz)₂]₂C₆H₄, L_p, m-[CH(pz)₂]₂C₆H₂, L_m, and m-[CH(3,5-Me₂pz)₂]₂C₆H₄, L_m* (pz = pyrazolyl ring), link two bis(pyrazolyl)methane units into a single molecule by a rigid phenylene spacer and are used to study the structural variations and magnetic interactions in self-assembled first row, divalent transition metal complexes in polymeric, dinuclear and dinuclear metallacyclic settings. The formation of these architectures highly depend on the geometry of these ligands: anti, the …

Weak Interaction Studies Ith 6He, A. Knecht, Z. T. Alexander, Y. Bagdasarova, T. M. Cope, B. G. Delbridge, X. Fléchard, A. García, R. Hong, E. Liénard, P. Mueller, O. Naviliat-Cuncic, A. S.C. Palmer, R. G.H. Robertson, D. W. Storm, H. E. Swanson, S. Utsuno, F. Wauters, William Williams, C. Wrede, D. W. Zumwalt

Physics: Faculty Publications

The 6He nucleus is an ideal candidate to study the weak interaction. To this end we have built a high-intensity source of 6He delivering ∼1010 atoms/s to experiments. Taking full advantage of that available intensity we have performed a high-precision measurement of the 6He half-life that directly probes the axial part of the nuclear Hamiltonian. Currently, we are preparing a measurement of the beta-neutrino angular correlation in 6He beta decay that will allow to search for new physics beyond the Standard Model in the form of tensor currents. © 2013 AIP Publishing LLC.

Abridged Submission Guidelines

Professional Agricultural Workers Journal

No abstract provided.

The Role Of Defects In Interlayer Cation Exchange In Clay Minerals, Laura Cardon, Dr. Barry R. Bickmore

Journal of Undergraduate Research

Clay minerals comprise a large portion of the abundant sediment that covers the earth’s surface. As such, they have a significant impact on society in regard to land development and also water and mineral resources. The purpose of this study was to help unravel the mysteries of clay mineral properties by focusing special attention on the effects of defects found in the clay mineral structure. These defects are believed to play a key role in the exchange of, oftentimes toxic, interlayer cations in the clay mineral. Better understanding of this exchange would lead to better water management and aid us …

Modeling Fecal Bacteria In Oregon Coastal Streams Using Spatially Explicit Watershed Characteristics, Paul Bryce Pettus

Dissertations and Theses

Pathogens, such as Escherichia coli and fecal coliforms, are causing the majority of water quality impairments in U.S., making up ~87% of this grouping's violations. Predicting and characterizing source, transport processes, and microbial survival rates is extremely challenging, due to the dynamic nature of each of these components. This research built upon current analytical methods that are used as exploratory tools to predict pathogen indicator counts across regional scales. Using a series of non-parametric methodologies, with spatially explicit predictors, 6657 samples from non-estuarine lotic streams were analyzed to make generalized predictions of regional water quality. 532 frequently sampled sites in …

Fractals, Dawn Paul

Valparaiso Fiction Review

No abstract provided.

Association Affinity Network Based Multi-Model Collaboration For Multimedia Big Data Management And Retrieval, Tao Meng

Open Access Dissertations

With the rapid development of smart devices and ever-increasing popularity of social media websites such as Flickr, YouTube, Twitter and Facebook, we have witnessed a huge increase of multimedia data. Recently, social media technology and big data have converged to provide rich content on what happens around the world via texts, images, videos, audios, etc. Given the enormous volumes of multimedia data, efficient and effective retrieval of relevant information according to users’ needs poses great challenges for traditional text-oriented storage and retrieval systems. Since manually annotating and managing the huge amount of information have become infeasible, data-driven approaches have received …

Commencement Convocation Program, Sarasota - Manatee Campus, December 15, 2013, University Of South Florida

USF Graduation and Convocation Programs

Golden Bull Service & Outstanding Leadership Award - Miriam Fleck; Outstanding Graduate Award - Justin Daniel (J.D.) Lotz; Outstanding Professor - Elaine Augustine and Tricia Hunsader

How Does Climate Change Affect Coral Reefs?, Rachel Goff

Honors Theses

Climate change is a very real phenomenon that currently affects many of the ecosystems on Earth. Climate change occurs on a global scale and can be very detrimental to different environments. This occurrence can cause ocean warming, sea level rise, ocean acidification, and increased storm intensity. According to the EPA, the ocean's temperature has increased 1.4°F over the past century, and sea levels have risen 3.2 millimeters through the past 20 years. These changes to the oceans can greatly affect many of the ecosystems that reside in them. One of the main ecosystems that are being affected by climate change …

The Least Squares Trefftz Method And The Method Of External Source For The Eigenfrequencies Of Waveguides, Hui-Ming Fang, Chia-Ming Fan, Yan-Cheng Liu, Sung-Shan Hsiao

Journal of Marine Science and Technology–Taiwan

In this study, the least squares Trefftz method (LSTM) is adopted for analyzing the eigenfrequencies problems governed by homogeneous Helmholtz equations. The Trefftz method, one kind of boundary-type meshless collocation methods, does not need mesh generation and numerical quadrature. Since the system of linear algebraic equations obtained by Trefftz method is highly ill-conditioned, the least squares method is adopted to stabilize the numerical scheme in this study. In the eigenproblem, the response amplitudes from an external source are used to determine the resonant frequencies. By adding an external source, the homogeneous boundary condition becomes inhomogeneous. Then we can employ the …

Commencement Convocation Program, St. Petersburg Campus, December 15, 2013, University Of South Florida

USF Graduation and Convocation Programs

Regional Chancellor's Award for Civic Leadership - Honorable Rick Baker; Outstanding Graduate - Charles Matthew Hamm;

Physical Models For Simulating Ship Stability And Hydrostatic Motions, Shyh-Kuang Ueng

Journal of Marine Science and Technology–Taiwan

In this paper, efficient physics models are presented for simulating ship hydrostatic motions caused by sea waves, cargoes and flooding water. Based on the stability theory of ship, a ship is regarded as a floating body whose stability is indicated by its gravity, buoyancy and meta centers. These stability centers are influenced by cargoes, sea waves, flooding water and the ship mass. Variations of these stability centers create torques and forces which cause the ship to heave, pitch and roll. Because of the irregularity of the ship shape, analytical solutions of these stability centers do not exist. In this work, …

Functional Response Of Venus Flytraps (Dionaea Muscipula), Amber D. Martin

Honors Theses

The feeding response of Venus flytraps (Dionaea muscipula) is widely studied, and many studies have considered the selectivity of prey capture in D. muscipula (Lichtner and Williams, 1977; Hutchens and Luken, 2009). The consumption rate of an organism relative to the abundance or availability of its food is known as that organism's functional response (Jeschke et al., 2004). In this study, a functional response curve will be constructed for D. muscipula based on its response to increasing availability of small prey in the laboratory. Knowledge of functional responses is important for various fields of biology including population biology, evolutionary biology, …

Shark Community Structure In Winyah Bay, Sc, Keenen Fryman

Honors Theses

Assessments of local shark stocks are vital to understand population trends and their causes. Local data are incomplete despite many studies over many years. The first published study listed all of the shark species found off the coast of SC (Bearden 1965). Following Bearden's work, Schwartz (2003) used a 30 year data set to describe the elasmobranchs found in NC and SC. In 2004, a survey of coastal habitats in southeast NC helped to identify the nursery habitat for C. acronotus, C. brevipinna, C. limbatus, C. obscurus, C. plumbeus, M. canis, R. terraenovae, S. tiburo, and S. lewini (Thorpe et …

Seasonal Dynamics Of Flatfish Assemblage In Coastal Waters Off Northeastern Taiwan: With Implications For Shift In Species Dominance Of The Ecosystem, Shyh-Bin Wang, Wen-Kwen Chen, Shoou-Jeng Joung

Journal of Marine Science and Technology–Taiwan

The seasonal dynamics of flatfish assemblage in the coastal waters off northeastern Taiwan was examined based on samples collected between March 2004 and March 2005 taken by bottom trawlers and landed at Da-Shi fishing port, Yilan county. A total of 28 species from 5 families and 18 genera were found. The Bothidae was the most dominant family, accounting for 81% of the total catch, while the most dominant species was the Pseudorhombus pentophthalmus. Species richness and diversity were high between the end of fall and the end of spring, but low in summer. Multivariate analyses based on cluster and nonparametric …

Application Of Bradford's Law Of Scattering To The Literature Of Library & Information Science: A Study Of Doctoral Theses Citations Submitted To The Universities Of Maharashtra, India, Vijay Ganesh Wardikar Viju

Library Philosophy and Practice (e-journal)

ABSTRACT

Application of Bradford's Law of Scattering is one of the bibliometric law, which is used most commonly in bibliometric research. The paper gives a review of the contribution in Library & Information Science & theoretical aspects of the law. A study carried out on the data of journals cited by Ph.D. research scholars at the universities in Maharashtra for their doctoral research. To examine the applicability of Bradford's Law of Scattering, study include 798 periodical containing 5467 references collected form 138 theses during the period 1982-2010. Rank list was prepared and Annals of Library Science and Documentation took top …

What Drives The Seasonality Of Photosynthesis Across The Amazon Basin? A Cross-Site Analysis Of Eddy Flux Tower Measurements From The Brasil Flux Network, Natalia Restrepo-Coupe, Humberto R. Da Rocha, Lucy R. Hutyra, Alessandro C. Da Araujo, Laura S. Borma, Bradley O. Christoffersen, Osvaldo M.R. Cabral, Plinio B. De Camargo, Fernando L. Cardoso, Antonio C.Lola Da Costa

School of Integrative Biological & Chemical Sciences Faculty Publications

We investigated the seasonal patterns of Amazonian forest photosynthetic activity, and the effects thereon of variations in climate and land-use, by integrating data from a network of ground-based eddy flux towers in Brazil established as part of the 'Large-Scale Biosphere Atmosphere Experiment in Amazonia' project. We found that degree of water limitation, as indicated by the seasonality of the ratio of sensible to latent heat flux (Bowen ratio) predicts seasonal patterns of photosynthesis. In equatorial Amazonian forests (5° N-5° S), water limitation is absent, and photosynthetic fluxes (or gross ecosystem productivity, GEP) exhibit high or increasing levels of photosynthetic activity …

Overview Of The Large-Scale Biosphere-Atmosphere Experiment In Amazonia Data Model Intercomparison Project (Lba-Dmip), Luis Gustavo Gonçalves De Gonçalves, Jordan S. Borak, Marcos Heil Costa, Scott R. Saleska, Ian Baker, Natalia Restrepo-Coupe, Michel Nobre Muza, Benjamin Poulter, Hans Verbeeck, Bradley O. Christoffersen

School of Integrative Biological & Chemical Sciences Faculty Publications

A fundamental question connecting terrestrial ecology and global climate change is the sensitivity of key terrestrial biomes to climatic variability and change. The Amazon region is such a key biome: it contains unparalleled biological diversity, a globally significant store of organic carbon, and it is a potent engine driving global cycles of water and energy. The importance of understanding how land surface dynamics of the Amazon region respond to climatic variability and change is widely appreciated, but despite significant recent advances, large gaps in our understanding remain. Understanding of energy and carbon exchange between terrestrial ecosystems and the atmosphere can …

Fall Commencement Program, December 14, 2013, Coastal Carolina University

Commencement Programs

Program of Commencement Exercises at Coastal Carolina University.

Commencement Program 2013 December, Gcsu Special Collections

Commencement Programs

No abstract provided.