Digital Commons Network^™

No Vacuum Cerenkov Radiation Losses In The Timelike Lorentz-Violating Chern-Simons Theory, Karl Schober, Brett David Altschul

Faculty Publications

In a Lorentz- and CPT-violating modification of electrodynamics that includes a timelike Chern-Simons term, there are no energy losss through vacuum Cerenkov radiation. A charge moving with a constant velocity does not lose energy, because of an unusual cancellation. Higher frequency modes of the electromagnetic field carry away positive energy, but lower frequency modes carry away a compensating negative amount of energy.

Crow's Nest, October 19, 2015, Crow's Nest Staff

Crow's Nest

The October 19, 2015, issue of the Crow's Nest.

06. Stochastic Processes: Concepts, Gerhard Müller

Nonequilibrium Statistical Physics (2015)

Part six of course materials for Nonequilibrium Statistical Physics (Physics 626), taught by Gerhard Müller at the University of Rhode Island. Entries listed in the table of contents, but not shown in the document, exist only in handwritten form. Documents will be updated periodically as more entries become presentable.

Updated with version 2 on 5/3/2016.

03. Elements Of Probability Theory With Applications, Gerhard Müller

Nonequilibrium Statistical Physics (2015)

Part three of course materials for Nonequilibrium Statistical Physics (Physics 626), taught by Gerhard Müller at the University of Rhode Island. Entries listed in the table of contents, but not shown in the document, exist only in handwritten form. Documents will be updated periodically as more entries become presentable.

Updated with version 2 on 5/3/2016.

02. Probability: Intuition - Ambiguity - Absurdity - Puzzles, Gerhard Müller

Nonequilibrium Statistical Physics (2015)

Part two of course materials for Nonequilibrium Statistical Physics (Physics 626), taught by Gerhard Müller at the University of Rhode Island. Entries listed in the table of contents, but not shown in the document, exist only in handwritten form. Documents will be updated periodically as more entries become presentable.

Updated with version 2 on 5/3/2016.

Millennial-Scale Variability Of A Major East Antarctic Outlet Glacier During The Last Glaciation, Michelle Guitard

USF Tampa Graduate Theses and Dissertations

Ongoing retreat of Antarctica’s marine-based glaciers is associated with warm (~2° C) modified Circumpolar Deep Water intrusion onto the continental shelf, suggesting that Southern Ocean temperatures may influence Antarctic ice sheet stability. Understanding past cryosphere response to environmental forcing is crucial to modeling future ice sheet behavior. Of particular interest is the response of the East Antarctic Ice Sheet (EAIS), which stands to contribute ~20 m to global sea level. However, marine sediment sequences recording timing and variability of EAIS fluctuations through the last major climate shift, the Last Glacial Maximum (LGM), are either missing from the margin or have …

Faculty Senate Bill Fsb-2015-10-19-01: University Curriculum Committee, Armstrong State University

Armstrong Faculty Senate: Bills, Motions & Resolutions (Archived)

Faculty Senate Bill FSB-2015-10-19-01: University Curriculum Committee

October 19, 2015 Armstrong Faculty Senate Minutes, Armstrong State University

Armstrong Faculty Senate: Minutes (Archived)

October 19, 2015 Armstrong Faculty Senate Minutes

Ocean Forcing Of Quaternary East Antarctic Ice Sheet Evolution: An Ice-Proximal Sedimentary Perspective, Michelle E. Guitard

USF Tampa Graduate Theses and Dissertations

Antarctica and the Southern Ocean play a critical role in Earth’s climate system. Antarctica’s ice sheets contain enough ice to raise global sea level by ~58 m, and the Southern Ocean distributes climate signals and nutrients to the major ocean basins and the deep ocean. Antarctica’s largest ice sheet, the East Antarctic Ice Sheet (EAIS), was considered stable compared to those in West Antarctica and the Antarctic Peninsula because it was thought to be grounded above sea level. However, subglacial topography now reveals vast submarine basins and measurements of ice velocity in the Pacific sector indicate marine-terminating outlet glacier thinning …

The Free Press Vol. 47, Issue No. 06, 10-19-2015, Krysteana Scribner

Free Press, The

Mayoral candidates take the stage for debate hosted at USM -- Rise in graduate education reflected at USM: Is it worth the cost? -- The impact of technology in the classroom -- Airbnb makes finding vacant rooms easier for tourists -- USM goes the extra mile to help its veterans -- Analyzing Maine’s new gun laws in a national context

Proper Orthogonal Decomposition Methods For The Analysis Of Real-Time Data: Exploring Peak Clustering In A Secondhand Smoke Exposure Intervention, Vincent Berardi, R. Carretero-González, N. E. Klepeis, A. Palacios, J. Belletierre, S. Hughes, S. Obayashi, M. F. Hovell

Psychology Faculty Articles and Research

This work explores a method for classifying peaks appearing within a data-intensive time-series. We summarize a case study from a clinical trial aimed at reducing secondhand smoke exposure via the installation of air particle monitors in households. Proper orthogonal decomposition (POD) in conjunction with a k-means clustering algorithm assigns each data peak to one of two clusters. Aversive feedback from the monitors increased the proportion of short-duration, attenuated peaks from 38.8% to 96.6%. For each cluster, a distribution of parameters from a physics-based model of airborne particles is estimated. Peaks generated from these distributions are correctly identified by POD/clustering …

Spiral Unfoldings Of Convex Polyhedra, Joseph O'Rourke

Computer Science: Faculty Publications

The notion of a spiral unfolding of a convex polyhedron, resulting by flattening a special type of Hamiltonian cut-path, is explored. The Platonic and Archimedian solids all have nonoverlapping spiral unfoldings, although among generic polyhedra, overlap is more the rule than the exception. The structure of spiral unfoldings is investigated, primarily by analyzing one particular class, the polyhedra of revolution.

Halloween Family Ghost Run, Hosted By Maryann Manning Family Literacy Center, To Feature Noah Galloway From "Dancing With The Stars", Staff

Browse All News

No abstract provided.

Manzanar Murakami As Radical Mathematician, Logan Bishop-Van Horn

Scholarly Undergraduate Research Journal at Clark (SURJ)

In Karen Tei Yamashita’s Tropic of Orange, characters attempt to make meaning of the many complex structures in which they are situated. In his unique meaning-making process, Manzanar Murakami, a homeless Sansei, “conducts” the Los Angeles traffic with a silver baton from atop a highway overpass. In conducting his music, Murakami per- forms complex mathematics, finding meaning in connection by mapping the rhythmic flow of humans, machines, and goods. Through his baton, to the sounds of a beautiful orchestra, he translates precisely the relationships he sees before him. Murakami’s music and Yamashita’s fantastic images constitute a “mathematical realism,” a lens …

Female Gubernatorial Candidates In Purple States: A Case Study Of New Mexico And Arizona, Brittany Klug

Scholarly Undergraduate Research Journal at Clark (SURJ)

This research serves to determine how the political ideology of Republican female candidates, in conjunction with political and cultural factors, affects the outcome of gubernatorial elections. An analysis of two 2010 gubernatorial races, taking place in New Mexico and Arizona, will use a case study approach to test the hypothesis that no single aspect of a candidate will ultimately decide the outcome of an election. This paper will also use an alternative ideol- ogy score to compare candidates, in addition to examining the history of female politicians. The findings support the hypothesis that one factor does not unilaterally determine an …

Mixed Weibull Distribution Model Of Dc Dielectric Breakdowns With Dual Defect Modes, Allen Andersen, Jr Dennison

Presentations

Purpose/Aim

This work proposes an enhanced statistical model for DC dielectric breakdown properties, which incorporates both shallow and deep defect modes. By incorporating these physics-based concepts into a traditionally empirical model, its accuracy and utility can be extended.

Experimental/Modeling methods

Voltage step-up tests were performed for various polymeric films. The distributions of the breakdown fields are fit to standard two- and three-parameter Weibull distributions. These are extended for a dual defect model, with separate mean energies for shallow and deep level traps, using mixed Weibull distributions.

Results/discussion

As shown in Fig 1, such enhanced physics-based statistical models can result in …

Mathematical Problems In Petri Nets Theory And Applications, Zhiwu Li, Murat Uzam, Guanjun Liu, Georg Frey, Ying Tang

Henry M. Rowan College of Engineering Departmental Research

(Editorial)

Student Perceptions Of Caring Mathematics Instruction, Andrew B. Spires

Georgia Educational Research Association Conference

In my study I would like to examine how students who are part of a ninth grade mathematics intervention program describe caring mathematics instruction. Researchers have shown the importance of caring instruction especially as it relates to high school mathematics instruction of students who have a history of academic struggles and failure. Given that caring is a complex construct, students’ perceptions of teacher caring not only has the potential to inform high school mathematics instruction but also could lead to healthier and stronger teacher-student relationships.

Evaluating A Behaviorist And Constructivist Learning Theory For 21st Century Learners, Paul F. Sidney

Georgia Educational Research Association Conference

A critical issue in educational learning theory involves examining the effectiveness of the modern constructivists and the traditional behaviorist educational theories to impact 21st century global student learning. Research articles by Ultanir, E. (2012). An Epistemological Glance at the Constructivist Approach: Constructivist Learning in Dewey, Piaget, and Montessori, addresses learning development based on natural talent as an assertion of constructivism. Additionally Magni, Polina, Cappetta, & Proserpio (2013) in their article Diving Too Deep: How Cognitive Absorption and Group Learning Behavior Affect Individual Learning assert that the constructivist theory provides students with an intrinsic, collaborative effort towards learning. Additionally Oakland (2012) …

Latent Heat Recovery Modification From Sodium Acetate Trihydrate Due To Structural Changes Caused By Silver Nanoparticles, Gillian Ryan, Uma Ramabadran, Frederick Garcia

Physics Publications

Phase change materials (PCMs) have great potential as energy storage devices through the storage of thermal energy at low temperatures. Sodium acetate trihydrate (SAT) is a PCM commonly used for storing thermal energy for non-electric personal warmers, and releases that energy as latent heat during the phase transition from a supersaturated liquid state to a solid, crystal state at room temperature. SAT is an inexpensive, non-toxic PCM. These characteristics make SAT ideal for the development of reusable, non-electric neonatal blankets. This application requires careful optimization of the maximum temperature attained by the SAT solution, balanced by a prolonged heat release …

Evaluation Of First Order Error Induced By Conservative-Tracer Temperature Approximation For Mixing In Karstic Flow, Philippe Machetel, David A. Yuen

Sinkhole Conference 2015

Fluid dynamics in karst systems is complex due to the heterogeneity of hydraulic networks that combine the Porous Fractured Matrix (PFM) and the interconnected drains (CS). These complex dynamic systems often need to be treated as “black boxes” in which only input and output properties are known. In this work, we propose to assess the first-order error induced by considering the temperature as a conservative tracer for flows mixing in karst (fluvio-karst). The fluvio-karstic system is treated as an open thermodynamic system (OTS), which exchanges water and heat with its surrounding. We propose to use a cylindrical PFM drained by …

Numerical Simulation Of Spring Hydrograph Recession Curves For East Yorkshire Chalk Aquifer, Uk, Nozad Hasan Azeez, Landis Jared West, Simon H. Bottrell

Sinkhole Conference 2015

The Cretaceous Chalk aquifer is the most important in the UK for the provision of water to public supply and agriculture. The Chalk has both matrix and fracture porosity and is thus best considered as a dual porosity aquifer system. Although the matrix porosity is large, typically around 0.35 in the study area of East Yorkshire, UK (ESI, 2010), pore diameters are typically very small, and the water contained in them is virtually immobile. The high permeability fracture network is responsible for the ability of water to drain; spatial variations in fracture network properties mean conventional approaches to aquifer characterization …

Accounting For Anomalous Hydraulic Responses During Constant-Rate Pumping Tests In The Prairie Du Chien-Jordan Aquifer System – Towards A More Accurate Assessment Of Leakage, Justin Blum

Sinkhole Conference 2015

The Prairie du Chien-Jordan Aquifer system is an important source of drinking water for residents of southeastern Minnesota. Assessment of the hydraulic properties of this aquifer continues to be of interest for wellhead protection and resource evaluation efforts. When performing constant-rate pumping tests on wells constructed in the karsted Prairie du Chien Aquifer, anomalous hydraulic responses resulting from cavernous flow are frequently observed. Hydraulic response in the adjacent Jordan Sandstone Aquifer is also commonly distorted because of bedding-plane fractures and well development techniques such as blasting and bailing. Resolution of these anomalous responses is important for accurate estimates of leakage …

Experimental And Numerical Investigation Of Sinkhole Development And Collapse In Central Florida, Xiaohu Tao, Ming Ye, Xiaoming Wang, Dangliang Wang, Roger Pacheco Castro, Jian Zhao

Sinkhole Conference 2015

The mechanisms of sinkhole formation, development, and collapse are investigated in this study using experimental and numerical methods. Sandbox experiments are conducted to understand how excessive groundwater pumping triggers sinkholes formation. The experimental results indicate that the change of hydrologic conditions is critical to sinkhole development. When seepage force increases due to increase of hydraulic gradient, clay and sand particles start moving downward to form a cavity. The confining unit is of particular importance because the cavity is first formed in this layer. Based on the conceptual model developed from the sandbox experiments, the Fast Lagrangian Analysis of Continua (FLAC) …

Cars And Karst: Investigating The National Corvette Museum Sinkhole, Jason S. Polk, Leslie North, Ric Federico, Brian Ham, Dan Nedvidek, Kegan Mcclanahan, Pat Kambesis, Mike Marasa

Sinkhole Conference 2015

On February 12th, 2014, a sinkhole occurred at the National Corvette Museum in Bowling Green, Kentucky. The collapse happened inside part of the building known as the Skydome and eight Corvettes on display were lost into the void that opened in the concrete floor. In this region of Kentucky, known as the Pennyroyal sinkhole plain, subsidence and cover collapse sinkholes are commonly found throughout the landscape. This iconic karst region in the United States is also home to Mammoth Cave, the longest cave in the world, and thousands of other caves and karst features. Investigation of the sinkhole collapse began …

Building Codes To Minimize Cover Collapses In Sinkhole-Prone Areas, George Veni, Connie Campbell Brashear, Andrew Glasbrenner

Sinkhole Conference 2015

Cover- collapse sinkholes are forming with increasing frequency under buildings. Analyses of sinkhole distribution in Beacon Woods, Florida, preliminarily indicate their occurrence is an order of magnitude greater in urban versus undeveloped areas, suggesting the structures themselves are enhancing the collapse process. The most likely causes are induced recharge via at least one of two sources. First, runoff and drainage from roads, structures, and impoundments that is not adequately dispersed will promote sinkhole development. Second, leaking water, sewer, and septic systems beneath or adjacent to a structure will also promote collapse. The process of cover-collapse from induced recharge is well …

Evaporite Geo-Hazard In The Sauris Area (Friuli Venezia Giulia Region - Ne Italy), Chiara Calligaris, Stefano Devoto, Luca Zini, Franco Cucchi

Sinkhole Conference 2015

Evaporite sinkholes represent a severe threat to many European countries, including Italy. Among the Italian regions, of the area most affected is the northern sector of Friuli Venezia Giulia Region (NE Italy). Here chalks had two main depositional periods first in the Late Permian and then during the Late Carnian (Late Triassic). Evaporites outcrop mainly in the Alpine valleys or are partially mantled by Quaternary deposits, as occur along the Tagliamento River Valley. Furthermore, evaporites make up some portions of mountains and Alpine slopes, generating hundreds of karst depressions. This paper presents the preliminary results of the research activities carried …

The Cost Of Karst Subsidence And Sinkhole Collapse In The United States Compared With Other Natural Hazards, David J. Weary

Sinkhole Conference 2015

Rocks with potential for karst formation are found in all 50 states. Damage due to karst subsidence and sinkhole collapse is a natural hazard of national scope. Repair of damage to buildings, highways, and other infrastructure represents a significant national cost. Sparse and incomplete data show that the average cost of karst-related damages in the United States over the last 15 years is estimated to be at least $300,000,000 per year and the actual total is probably much higher. This estimate is lower than the estimated annual costs for other natural hazards; flooding, hurricanes and cyclonic storms, tornadoes, landslides, earthquakes, …

Hydrochemical Characteristics And Formation Mechanism Of Groundwater In The Liulin Karst System, Min Yang, Feng'e Zhang, Sheng Zhang, Miying Yin, Guoqing Wu

Sinkhole Conference 2015

The Liulin karst system is typical of hydrogeological systems in northwestern China, with a group of springs as the dominant mechanism for regional groundwater discharge. To reveal the hydrochemical formation mechanism of the Liulin karst groundwater system, we studied the hydrogeochemical processes of karst groundwater in aquifers at the base of the hydrogeological investigation. Then starting from the chemical composition of karst groundwater together with the recharge-runoff - discharge process of groundwater systems, we analyzed the solutes origin and the dissolved mineral facies of the groundwater chemical composition. The results showed that the anionic and cationic compositions of karst water …

Dye Tracing Through The Vadose Zone Above Wind Cave, Custer County, South Dakota, James Nepstad

Sinkhole Conference 2015

During the 1990s, in an attempt to better understand threats posed by surface developments overlying the cave, National Park Service staff at Wind Cave National Park in Custer County, South Dakota carried out a series of dye traces through portions of the vadose zone overlying the cave. Wind Cave is located within the 100m-thick Madison formation (limestone and dolomite), which in most locations is capped by varying thicknesses of the basal units of the Minnelusa formation (intermingled beds of sandstone, limestone, and shale). A variety of cave locations with dripping or pooled water were monitored for up to five years …