Physical Sciences and Mathematics Commons^™

The Construction And Validation Of An Instructor Learning Analytics Implementation Model To Support At-Risk Students, Holly M. Mckee

CCAC Theses and Dissertations

With the widespread use of learning analytics tools, there is a need to explore how these technologies can be used to enhance teaching and learning. Little research has been conducted on what human processes are necessary to facilitate meaningful adoption of learning analytics. The research problem is that there is a lack of evidence-based guidance on how instructors can effectively implement learning analytics to support academically at-risk students with the purpose of improving learning outcomes. The goal was to develop and validate a model to guide instructors in the implementation of learning analytics tools to support academically at-risk students with …

A Life Cycle Analysis Of Land Use In Us Pork Production, Greg Thoma, Marty Matlock, Ben Putman, Jasmina Burek

Food Systems

The goal of this study was to analyze land use in the production of US pork using Life Cycle Assessment (LCA). LCA is a comprehensive methodology for quantitatively analyzing potential environmental impacts associated with complex systems. Identification of processes contributing to high environmental impacts often highlights opportunities for gains in efficiency, which can increase the profitability and sustainability of US pork. The environmental impact category analyzed in this assessment was land use. After reviewing existing information regarding land use in agriculture and livestock production, analysis for US pork production was performed at two scales: cradle-to-grave and cradle-to-farm gate. The cradle-to-grave …

Analisis Desain Website Terhadap Budaya Pendekatan Teori Hofstede, Amelia Fauziah Husna

Elinvo (Electronics, Informatics, and Vocational Education)

Penelitian ini bertujuan untuk mengetahui pengaruh kebudayaan terhadap desai suatu website dan mengetahui budaya apakah yang berkembang di daerah tersebut melalui desai websitenya. Metode yang digunakan adalah studi kasus. Variabel yang digunakan ada 5, sesuai dengan Teori Hofstede, yaitu Power Distance (Jarak Kekuasaan), Indivialism vs Collectivism (Individualisme vs Kolektivisme), Masculinity vs Femininity (Maskulinitas vs Feminitas), Uncertainty Avoidance (Penghindaran terhadap Ketidakpastian), dan Long Term Orientation vs Short Term Normative (Orientasi Jangka Panjang vs Orientasi Normatif Jangka Pendek. Penelitian ini membandingkan tiga website yang berasal dari tiga negara yang berbeda, bahkan benua yang berbeda. Hasilnya terdapat perbedaan desain website yang dipengaruhi oleh …

Losing Ground, Alison Kanski

Capstones

Climate change and sea level rise are slowly decimating beaches. But the U.S. government and loyal residents won't let go of the beaches so easily.

A determined resident of the Rockaways in New York fights for the money and attention from governments to sustain his lifelong home and stop it from washing away.

Greenpoint's Superfund Problem, Helina Selemon

Capstones

A feature observing a community living in the shadow of a superfund site, a toxic industrial site in need of cleanup, that was recently purchased for development. The story looks at the complicated nature of this particular superfund and the problems the community around it has--including potential health risks during cleanup, rapid development, and an inescapable industrial past.

Front Matter

Journal of Digital Forensics, Security and Law

No abstract provided.

Masthead

Journal of Digital Forensics, Security and Law

No abstract provided.

Back Matter

Journal of Digital Forensics, Security and Law

No abstract provided.

Review Of The Capacity Of The Implementation Of Ballast Water Management Convention In Sri Lanka As Flag State, Port State And Coastal State, Thalatha Sreeni Ranasinghe

World Maritime University Dissertations

No abstract provided.

Compliant Strategy For Shipowners Towards Sustainable Maritime Transport : A Decision Framework For Air Emission Reduction Measures, Aditya Srivastava

World Maritime University Dissertations

IMO uses three pillar strategy for air emission reduction including, technical, operational and market-based measures (MBM). The dissertation briefly describes the maritime regulatory framework for reduction of emissions. An overview on air emissions caused by the shipping sector is analysed. A brief look is taken on the need and methodology for inventory management of air emissions. A comparison between the market-based measures, operational measures, carbon tax and abatement measures for averting air emissions of carbon equivalent is made. The author has examined the abatement measures available to shipowners. This section also investigates the response of shipowners to different possible measures. …

Marine Regional Planning Measures To Improve The Sustainability Of The Seaflower Mpa In The Colombian Caribbean Sea/, Sergio Ivan Rueda Forero

World Maritime University Dissertations

No abstract provided.

Liability And Compensation Due To Transboundary Pollution Caused By Offshore Exploration And Exploitation : Imo Competence And Development Of Guidelines, Sebastian Pizarro Klein

World Maritime University Dissertations

The dissertation is an analysis on the problem of the prevailing legal lacuna regarding responsibility and liability due transboundary offshore pollution. The investigation starts with the examination of the discussion at IMO and its competence to regulate the offshore industry. Afterwards the discussion at the Legal Committee of IMO is analyzed through the different doctrines developed by the authors and the International Court of Justice. Based on a possible competence of the IMO, we introduce the discussion on which international instrument is appropriate to regulate the legal lacuna. Finally, in the concluding chapters, different international instruments are compared highlighting the …

Identification Of Arabidopsis Gpat9 (At5g60620) As An Essential Gene Involved In Triacylglycerol Biosynthesis, Jay Shockey, Anushobha Regmi, Kimberly Cotton, Neil Adhikari, John Bowse, Philip D. Bates

Faculty Publications

The first step in the biosynthesis of nearly all plant membrane phospholipids and storage triacylglycerols is catalyzed by a glycerol-3-phosphate acyltransferase (GPAT). The requirement for an endoplasmic reticulum (ER)-localized GPAT for both of these critical metabolic pathways was recognized more than 60 years ago. However, identification of the gene(s) encoding this GPAT activity has remained elusive. Here, we present the results of a series of in vivo, in vitro, and in silico experiments in Arabidopsis (Arabidopsis thaliana) designed to assign this essential function to AtGPAT9. This gene has been highly conserved throughout evolution and is …

Automatic Detection And Quantification Of Bluff Erosion Events In Single Image Series, Martin D. Hellwig

Graduate Masters Theses

Many communities along coastlines and riverbanks are threatened by water erosion and hence an accurate model to predict erosion events is needed in order to plan mitigation strategies. Such models need to rely on readily available meteorological data that may or may not be correlated with the occurrence of erosion events. In order to accurately study these potential correlations, researchers need a quantified time series index indicating the occurrence and magnitude of erosion in the studied area. We show that such an index can be obtained by creating and analyzing a single image series using relatively cheap consumer grade digital …

Brooklyn Trash Problems, Christina Diaz

Capstones

Walk through the streets of New York and at some point you’ll inevitably pass by a wafting smell of garbage, but residents of North Brooklyn are handling more than their share of the smelly load and they’re tired of getting dumped on.

A newly formed coalition of neighbors and environmental activists has begun a turf war against Brooklyn Transfer LLC, a waste transfer station located on Thames Street in East Williamsburg, which handles private commercial waste through ­­­­­­­­­­­­­Five Star Carting.

Link to Map: https://www.zeemaps.com/map?group=1769408

The Choice Of Prior Distribution For A Covariance Matrix In Multivariate Meta-Analysis: A Simulation Study, Sandra M. Hurtado Rua, Madhu Mazumdar, Robert L. Strawderman

Mathematics and Statistics Faculty Publications

Bayesian meta-analysis is an increasingly important component of clinical research, with multivariate meta-analysis a promising tool for studies with multiple endpoints. Model assumptions, including the choice of priors, are crucial aspects of multivariate Bayesian meta-analysis (MBMA) models. In a given model, two different prior distributions can lead to different inferences about a particular parameter. A simulation study was performed in which the impact of families of prior distributions for the covariance matrix of a multivariate normal random effects MBMA model was analyzed. Inferences about effect sizes were not particularly sensitive to prior choice, but the related covariance estimates were. A …

Quantifying The Adaptive Cycle, David G. Angeler, Craig R. Allen, Ahjond S. Garmestani, Lance H. Gunderson, Olle Hjerne, Monika Winder

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

The adaptive cycle was proposed as a conceptual model to portray patterns of change in complex systems. Despite the model having potential for elucidating change across systems, it has been used mainly as a metaphor, describing system dynamics qualitatively. We use a quantitative approach for testing premises (reorganisation, conservatism, adaptation) in the adaptive cycle, using Baltic Sea phytoplankton communities as an example of such complex system dynamics. Phytoplankton organizes in recurring spring and summer blooms, a well-established paradigm in planktology and succession theory, with characteristic temporal trajectories during blooms that may be consistent with adaptive cycle phases. We used long-term …

Entropyexplorer: An R Package For Computing And Comparing Differential Shannon Entropy, Kai Wang, Charles A. Philips, Arnold M. Saxton, Michael A. Langston

Computer Science: Faculty Publications

Background: Differential Shannon entropy (DSE) and differential coefficient of variation (DCV) are effective metrics for the study of gene expression data. They can serve to augment differential expression (DE), and be applied in numerous settings whenever one seeks to measure differences in variability rather than mere differences in magnitude. A general purpose, easily accessible tool for DSE and DCV would help make these two metrics available to data scientists. Automated p value computations would additionally be useful, and are often easier to interpret than raw test statistic values alone.

Results: EntropyExplorer is an R package for calculating DSE, DCV and …

The Surface Density Profile Of The Galactic Disk From The Terminal Velocity Curve, Stacy S. Mcgaugh

Faculty Scholarship

The mass distribution of the Galactic disk is constructed from the terminal velocity curve and the mass discrepancy-acceleration relation. Mass models numerically quantifying the detailed surface density profiles are tabulated. For R0 = 8 kpc, the models have stellar mass 5 < M∗ < 6 × 1010 , scale length 2.0 ≤ Rd ≤ 2.9 kpc, LSR circular velocity 222 ≤ Θ0 ≤ 233 , and solar circle stellar surface density 34 ≤ Σd(R0) ≤ 61 . The present interarm location of the solar neighborhood may have a somewhat lower stellar surface density than average for the solar circle. The Milky Way appears to be a normal spiral galaxy that obeys scaling relations like the Tully-Fisher relation, the size-mass relation, and the disk maximality-surface brightness relation. The stellar disk is maximal, and the spiral arms are massive. The bumps and wiggles in the terminal velocity curve correspond to known spiral features (e.g., the Centaurus arm is a ∼50% overdensity). The rotation curve switches between positive and negative over scales of hundreds of parsecs. The rms amplitude , implying that commonly neglected terms in the Jeans equations may be nonnegligible. The spherically averaged local dark matter density is ρ0,DM ≈ 0.009 (0.34 ). Adiabatic compression of the dark matter halo may help reconcile the Milky Way with the c-V200 relation expected in ΛCDM while also helping to mitigate the too-big-to-fail problem, but it remains difficult to reconcile the inner bulge/bar-dominated region with a cuspy halo. We note that NGC 3521 is a near twin to the Milky Way, having a similar luminosity, scale length, and rotation curve.

Lower-Dimensional Black Hole Chemistry, Antonia M. Frassino, Robert B. Mann, Jonas R. Mureika

Physics Faculty Works

The connection between black hole thermodynamics and chemistry is extended to the lower-dimensional regime by considering the rotating and charged Bañados, Teitelboim, and Zanelli (BTZ) metric in the (2 þ 1)-dimensional and (1 þ 1)-dimensional limits of Einstein gravity. The Smarr relation is naturally upheld in both BTZ cases, where those with Q ≠ 0 violate the reverse isoperimetric inequality and are thus superentropic. The inequality can be maintained, however, with the addition of a new thermodynamic work term associated with the mass renormalization scale. The D → 0 limit of a generic D þ 2-dimensional Einstein gravity theory is …

The Stationary Phase Method For Real Analytic Geometry, Domenico Napoletani, Daniele C. Struppa

Mathematics, Physics, and Computer Science Faculty Articles and Research

We prove that the existence of isolated solutions of systems of equations of analytical functions on compact real domains in R^p, is equivalent to the convergence of the phase of a suitable complex valued integral I(h) for h→∞. As an application, we then use this result to prove that the problem of establishing the irrationality of the value of an analytic function F(x) at a point x₀ can be rephrased in terms of a similar phase convergence.

Concurrent Kleene Algebra With Tests And Branching Automata, Peter Jipsen, M. Andrew Moshier

Mathematics, Physics, and Computer Science Faculty Articles and Research

We introduce concurrent Kleene algebra with tests (CKAT) as a combination of Kleene algebra with tests (KAT) of Kozen and Smith with concurrent Kleene algebras (CKA), introduced by Hoare, Möller, Struth and Wehrman. CKAT provides a relatively simple algebraic model for reasoning about semantics of concurrent programs. We generalize guarded strings to guarded series-parallel strings , or gsp-strings, to give a concrete language model for CKAT. Combining nondeterministic guarded automata of Kozen with branching automata of Lodaya and Weil one obtains a model for processing gsp-strings in parallel. To ensure that the model satisfies the weak exchange law (x‖y)(z‖w)≤(xz)‖(yw) of …

Debris Flow Susceptibility Map For Mount Rainier, Washington Based On Debris Flow Initiation Zone Characteristics From The November, 2006 Climate Event In The Cascade Mountains, Kassandra Lindsey

Dissertations and Theses

In November 2006 a Pineapple Express rainstorm moved through the Pacific Northwest generating record precipitation, 22 to 50 cm in the two-day event on Mt. Rainier. Copeland (2009) and Legg (2013) identified debris flows in seven drainages in 2006; Inter Fork, Kautz, Ohanapecosh, Pyramid, Tahoma, Van Trump, and West Fork of the White River. This study identified seven more drainages: Carbon, Fryingpan, Muddy Fork Cowlitz, North Puyallup, South Mowich, South Puyallup, and White Rivers. Twenty-nine characteristics, or attributes, associated with the drainages around the mountain were collected. Thirteen were used in a regression analysis in order to develop a susceptibility …

A Data Science Course For Undergraduates: Thinking With Data, Benjamin Baumer

Mathematics Sciences: Faculty Publications

Data science is an emerging interdisciplinary field that combines elements of mathematics, statistics, computer science, and knowledge in a particular application domain for the purpose of extracting meaningful information from the increasingly sophisticated array of data available in many settings. These data tend to be nontraditional, in the sense that they are often live, large, complex, and/or messy. A first course in statistics at the undergraduate level typically introduces students to a variety of techniques to analyze small, neat, and clean datasets. However, whether they pursue more formal training in statistics or not, many of these students will end up …

A Method For Achieving Analytic Formulas For Three Body Integrals Consisting Of Powers And Exponentials In All Three Interparticle Hyllerass Coordinates, Chris M. Keating

Dissertations and Theses

After an introduction to the variational principle of three body systems via the Helium atom, we present general analytical formulas for the radial parts of integrals that occur when three body systems are described using wave functions that consist of powers and exponentials in all three interparticle Hylleraas coordinates [Hylleraas1929]. This work is an extension of integrals given by Harris, Frolov and Smith, Jr. [Harris2004]. Specifically included are radial integrals encountered in calculations involving the dipole moment matrix element in Hylleraas coordinates that contain a function f(kr₁) (such as a spherical Bessel function) in addition to …

Energy-Efficient Selective Activation In Femtocell Networks, Michael Lin, Simone Silvestri, Novella Bartolini, Thomas La Porta

Computer Science Faculty Research & Creative Works

Provisioning the capacity of wireless networks is difficult when peak load is significantly higher than average load, for example, in public spaces like airports or train stations. Service providers can use femtocells and small cells to increase local capacity, but deploying enough femtocells to serve peak loads requires a large number of femtocells that will remain idle most of the time, which wastes a significant amount of power. To reduce the energy consumption of over-provisioned femtocell networks, we formulate a femtocell selective activation problem, which we formalize as an integer nonlinear optimization problem. Then we introduce Green Femto, a distributed …

Kohn–Sham Exchange-Correlation Potentials From Second-Order Reduced Density Matrices, Rogelio Cuevas-Saavedra, Paul W. Ayers, Viktor N. Staroverov

Chemistry Publications

We describe a practical algorithm for constructing the Kohn–Sham exchange-correlation potential corresponding to a given second-order reduced density matrix. Unlike conventional Kohn–Sham inversion methods in which such potentials are extracted from ground-state electron densities, the proposed technique delivers unambiguous results in finite basis sets. The approach can also be used to separate approximately the exchange and correlation potentials for a many-electron system for which the reduced density matrix is known. The algorithm is implemented for configuration-interaction wave functions and its performance is illustrated with numerical examples.

Advanced Techniques For Computational And Information Sciences, William Guo, Chih-Cheng Hung, Paul Scheunders, Bor-Chen Kuo

Faculty Articles

New techniques in computational and information sciences have played an important role in keeping advancing the so called knowledge economy. Advanced techniques have been introduced to or emerging in almost every field of the scientific world for hundreds of years, which has been accelerated since the late 1970s when the advancement in computers and digital technologies brought the world into the Information Era. In addition to the rapid development of computational intelligence and new data fusion techniques in the past thirty years [1–4], mobile and cloud computing, grid computing driven numeric computation models, big data intelligence, and other emerging technologies …

2nd Annual Sustainability Report, Saint Mary's College Of California

Sustainability Report

No abstract provided.

Colloidal Ionic Supercapacitors, Kun-Feng Chen, Dong-Feng Xue

Journal of Electrochemistry

Supercapacitors have high power density and long cycle life compared with battery systems, but they still suffer from low energy density at the same time. In order to increase the energy density of supercapacitors, we have developed a new type of pseudocapacitor, called colloidal ion supercapacitor, which can directly use commercial metal salts as electrode materials and form electroactive matter by in-situ electrochemical reactions without the need of additional materials synthesis processes. Colloidal ion supercapacitor can fully utilize the redox reaction of metal cations with multiple oxidation states, which can completely release the stored electrical energy of multiple-valence cations, leading …