cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Uncertainty Relation for Non-Hermitian Systems
Creators: name: Shukla, Namrata
name: Modak, Ranjan
name: Mandal, Bhabani Prasad
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct uncertainty relation for arbitrary finite dimensional PT invariant non-Hermitian quantum systems within a special inner product framework. This construction is led by good observables which are a more general class of operators. We show that the cumulative gain in the quantum Fisher information when measuring two good observables for such non-Hermitian systems is way better than their Hermitian counterpart. Minimum uncertainty states being the best candidates for this gain near the exceptional point supports the intelligent or simultaneous non-Hermitian quantum sensors.
description: 9 pages, 5 figures
title: Die Dienststellen des Landesdenkmalamtes
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 12, Nr. 1 (1983), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Triple Variational Principles for Self-Adjoint Operator Functions
Creators: name: Langer, Matthias
name: Strauss, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 49R05, 47A56, 47A10

description: For a very general class of unbounded self-adjoint operator function we prove upper bounds for eigenvalues which lie within arbitrary gaps of the essential spectrum. These upper bounds are given by triple variations. Furthermore, we find conditions which imply that a point is in the resolvent set. For norm resolvent continuous operator functions we show that the variational inequality becomes an equality.
description: Examples have been added. The paper is to appear in the Journal of Functional Analysis
Constraints on dark matter annihilation and decay from the large-scale structure of the nearby universe
Creators: name: Bartlett, Deaglan J.
name: Kostić, Andrija
name: Desmond, Harry
name: Jasche, Jens
name: Lavaux, Guilhem
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Decaying or annihilating dark matter particles could be detected through gamma-ray emission from the species they decay or annihilate into. This is usually done by modelling the flux from specific dark matter-rich objects such as the Milky Way halo, Local Group dwarfs, and nearby groups. However, these objects are expected to have significant emission from baryonic processes as well, and the analyses discard gamma-ray data over most of the sky. Here we construct full-sky templates for gamma-ray flux from the large-scale structure within $\sim$200 Mpc by means of a suite of constrained $N$-body simulations (CSiBORG) produced using the Bayesian Origin Reconstruction from Galaxies algorithm. Marginalising over uncertainties in this reconstruction, small-scale structure, and parameters describing astrophysical contributions to the observed gamma-ray sky, we compare to observations from the Fermi Large Area Telescope to constrain dark matter annihilation cross sections and decay rates through a Markov Chain Monte Carlo analysis. We rule out the thermal relic cross section for $s$-wave annihilation for all $m_χ\lesssim 7 {\rm \, GeV}/c^2$ at 95\% confidence if the annihilation produces gluons or quarks less massive than the bottom quark. We infer a contribution to the gamma-ray sky with the same spatial distribution as dark matter decay at $3.3σ$. Although this could be due to dark matter decay via these channels with a decay rate $Γ\approx 6 \times 10^{-28} {\rm \, s^{-1}}$, we find that a power-law spectrum of index $p=-2.75^{+0.71}_{-0.46}$, likely of baryonic origin, is preferred by the data.
description: 24 pages, 9 figures, 1 table. Accepted for publication in Physical Review D
title: Begrüßungsrede
Creators: name: Schlee, Dietmar
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 14, Nr. 4 (1985), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
People, place and consumption: Conceptualising and researching urban tourist experience, with particular reference to Cardiff, Wales
Creators: name: Selby, Martin
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Tourism not elsewhere classified

description: The thesis addresses ways of both conceptualising and researching the experience of urban tourists. A framework for conceptualising urban tourist experience is developed, and an experiential methodology is applied to Cardiff, the capital of Wales. A range of theoretical contributions and research is reviewed, drawing upon tourism, marketing, and geographical perspectives. It is argued that whilst dominant epistemologies are incapable of an adequate conceptualisation of urban tourist experience, important insights are provided by three different areas of literature. Substantive contributions from within the tourism and marketing literature include the application of service quality models to urban tourism, and the conceptualisation and measurement of place images according to the different stages of the consumer decision-making process. Cultural studies offers a more sophisticated conceptualisation of place image, enabling tourism representations and landscapes to be read as cultural texts. An understanding of place consumers, and the concept of place is provided by a humanistic perspective, drawing upon the work of phenomenologist Alfred Schutz. The experiential framework enables the design of an exploratory methodology. Combining qualitative and quantitative techniques, the methodology is applied to urban tourism in the city of Cardiff. The results reveal interesting discrepancies between the first-hand experiences of tourists, and images of Cardiff from outside. The application of factor analysis enables groups of consumers with particular images and experiences to be identified, along with particularly salient representations or experiences of the urban landscape. The results are discussed in the context of theoretical, methodological, and tourism policy implications.
Asymmetric magnetic proximity interactions in MoSe$_{2}$/CrBr$_{3}$ van der Waals heterostructures
Creators: name: Choi, Junho
name: Lane, Christopher
name: Zhu, Jian-Xin
name: Crooker, Scott A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetic proximity interactions (MPIs) between atomically-thin semiconductors and two-dimensional magnets provide a means to manipulate spin and valley degrees of freedom in nonmagnetic monolayers, without the use of applied magnetic fields. In such van der Waals (vdW) heterostructures, MPIs originate in the nanometer-scale coupling between the spin-dependent electronic wavefunctions in the two materials, and typically their overall effect is regarded as an effective magnetic field acting on the semiconductor monolayer. Here we demonstrate that this picture, while appealing, is incomplete: The effects of MPIs in vdW heterostructures can be markedly asymmetric, in contrast to that from an applied magnetic field. Valley-resolved optical reflection spectroscopy of MoSe$_{2}$/CrBr$_{3}$ vdW structures reveals strikingly different energy shifts in the $K$ and $K'$ valleys of the MoSe$_2$, due to ferromagnetism in the CrBr$_3$ layer. Strong asymmetry is observed at both the A- and B-exciton resonances. Density-functional calculations indicate that valley-asymmetric MPIs depend sensitively on the spin-dependent hybridization of overlapping bands, and as such are likely a general feature of such hybrid vdW structures. These studies suggest routes to selectively control \textit{specific} spin and valley states in monolayer semiconductors.
description: 12 pages total (including 4 figures + 7 Supplemental Figures)
Analysis of strong-field enhanced ionization of molecules using Bohmian trajectories
Creators: name: Sawada, Ryohto
name: Sato, Takeshi
name: Ishikawa, Kenichi L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We theoretically investigate the mechanism of enhanced ionization in two-electron molecules by analyzing Bohmian trajectories for a one-dimensional H2 in an intense laser field. We identify both types of ionizing trajectories corresponding to the ejection from the up-field and down-field cores. The trajectories of the two electrons are correlated with each other in the former while correlation is negligible in the latter. The contributions from the two ionization types, though depending on laser intensity and internuclear distance, are comparable to each other.
description: 9 pages, 9 figures
title: Historische Hauseingänge - Türen, Tore und Portale im Rhein-Neckar-Kreis
Creators: name: Laun, Rainer
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 15, Nr. 2 (1986), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
The Asymptotic Fermat's Last Theorem for Five-Sixths of Real Quadratic Fields
Creators: name: Freitas, Nuno
name: Siksek, Samir
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11D41

description: Let $K$ be a totally real field. By the asymptotic Fermat's Last Theorem over $K$ we mean the statement that there is a constant $B_K$ such that for prime exponents $p>B_K$ the only solutions to the Fermat equation $a^p + b^p + c^p = 0$ with $a$, $b$, $c$ in $K$ are the trivial ones satisfying $abc = 0$. With the help of modularity, level lowering and image of inertia comparisons we give an algorithmically testable criterion which if satisfied by $K$ implies the asymptotic Fermat's Last Theorem over $K$. Using techniques from analytic number theory, we show that our criterion is satisfied by $K = \mathbb{Q}(\sqrt{d})$ for a subset of $d$ having density $5/6$ among the squarefree positive integers. We can improve this to density 1 if we assume a standard "Eichler-Shimura" conjecture.
description: 20 pages. New title. The paper is rewritten and reorganized (a second time). The proofs are substantially shorter and more efficient
A precision test of averaging in AdS/CFT
Creators: name: Cotler, Jordan
name: Jensen, Kristan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We reconsider the role of wormholes in the AdS/CFT correspondence. We focus on Euclidean wormholes that connect two asymptotically AdS or hyperbolic regions with $\mathbb{S}^1\times \mathbb{S}^{d-1}$ boundary. There is no solution to Einstein's equations of this sort, as the wormholes possess a modulus that runs to infinity. To find on-shell wormholes we must stabilize this modulus, which we can do by fixing the total energy on the two boundaries. Such a wormhole gives the saddle point approximation to a non-standard problem in quantum gravity, where we fix two asymptotic boundaries and constrain the common energy. Crucially the dual quantity does not factorize even when the bulk is dual to a single CFT, on account of the fixed energy constraint. From this quantity we extract a smeared version of the microcanonical spectral form factor. For a chaotic theory this quantity is self-averaging, i.e. well-approximated by averaging over energy windows, or over coupling constants. We go on to give a precision test involving the microcanonical spectral form factor where the two replicas have slightly different coupling constants. In chaotic theories this form factor is known to smoothly decay at a rate universally predicted in terms of one replica physics, provided that there is an average either over a window or over couplings. We compute the expected decay rate for holographic theories, and the form factor from a wormhole, and the two exactly agree for a wide range of two-derivative effective field theories in AdS. This gives a precision test of averaging in AdS/CFT. Our results interpret a number of confusing facts about wormholes and factorization in AdS and suggest that we should regard gravitational effective field theory as a mesoscopic description, analogous to semiclassical mesoscopic descriptions of quantum chaotic systems.
description: 50 pages, 3 figures; v2: refs added
Silencing TFEB Suppresses Mammary Gland Acini Development and Proliferation
Creators: name: Goyal, Ria
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Cancer
breast cancer
mammary gland
acinus
TFEB
biochemistry
molecular biology
stem cells

description: Breast cancer is the most common type of cancer in the world. The aggressive and invasive nature of these tumors is explicable by the presence of cancer stem cells, which have self-renewal and initiation potentials that are analogous to the capabilities seen in normal mammary stem cells. The characterization of a protein’s role in a normal mammary gland, along with how this function is altered in cancerous tissue, enables enhanced understanding of the potential for specific novel drug targets. Transcription factor EB (TFEB) is currently known for its role as a master lysosomal regulator, and it has been shown to assist with cancerous progression through metabolic reprogramming. Yet, the key functions served by TFEB in mammary acini formation and its effects on mammary stem cells have never been determined. I have shown that the silencing of TFEB interrupts and disorganizes the development of mammary acini, unlike mere transcriptional inactivation. Furthermore, TFEB was not found to directly regulate the differentiation of mammary stem cells into a luminal lineage. Instead, TFEB appears to markedly contribute to the early proliferation of MCF10A cells, but additional investigation is necessary to characterize the mechanism. This work will guide future exploration into TFEB's potential as a drug target.
Electron spin resonance and exercise-induced oxidative stress: an antitoxidant intervention study
Creators: name: Ashton, Tony
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Cardiology (incl. cardiovascular diseases)

description: Electron spin resonance (ESR) evidence concerning free radical production by exercise has been confined to animals. This thesis describes a methodology to measure free radicals using ESR in the venous circulation of healthy humans. It also describes three ESR studies of human blood to test the hypothesis that tissue damage associated with strenuous aerobic exercise is free radical-mediated due to the promotion of electron leakage from the mitochondrial electron transport chain via increased whole body oxygen flux, a mechanism known to result in free radical formation. Study l demonstrated a significant increase in the concentration of the Î±-phenylbutyr-tert-nitrone (PBN) adduct (0.04 Â± 0.01 vs 0.18 Â± 0.04 arbitrary units, p=0.003) and ascorbyl radical (0.02 Â± 0.001 vs 0.03 Â± 0.002 arbitrary units, p=0.04) post-exercise. A threshold o fincrease of the PBN adduct appears to exist corresponding to approximately 70% VO2max which may prove to be clinically important. Duplicate blood samples were analysed for lipid peroxidation including malondialdhyde (MDA) and lipid hydroperoxides (LH). MDA (0.70 Â± 0.05 to 0.80 Â± 0.04 Âµmol.L-1 p=0.0125) and LH (1.15 Â± 0.07 to 1.63 Â± 0.29 Âµmol.L-1, p=0.006) significantly increased post-exercise. Study 1 also demonstrated that exhaustive aerobic exercise results in significant increases in plasma endotoxin concentration (0.16 Â± 0.03 vs 0.24 Â± 0.06 Eu.ml-1, p=0.001) pre vs post-exercise. This may be a free radical mediated phenomenon also of clinical significance. Study 2 demonstrated that strenuous anaerobic exercise does not lead to increases in the concentration of the PBN adduct or the ascorbyl radical. Furthermore plasma LH did not change in this study although MDA increased significantly (0.74 Â± 0.08 vs 1.73 Â± 0.65 Âµmol.L-1, p=0.01) pre vs post-exercise. This may reflect inadequacies in clearance of MDA. Study 3 demonstrated that ascorbic acid supplementation results in an attenuation of the ESR signal both pre and post-exercise. Supplementation with ascorbic acid resulted in attenuation of exercise-induced lipid peroxidation and enhancement of blood arch also demonstrates for the first time a complete abolition of endotoxin from the plasma of subjects who have undergone maximal aerobic exercise. Additionally in vitro studies were performed in order to attempt to identify the origin of the radical species. These results suggest that the ESR signal of the PBN adduct is an oxygen-centred radical possibly derived from peroxidation of membrane PUFA. This work supports The hypothesis that strenuous aerobic exercise leads to increased free radical production probably via enhancement of mitochondrial electron transport chain leakage due to increased whole body oxygen uptake which is detectable using ESR spectroscopy.
title: Die Dienststellen des Landesdenkmalamtes
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 15, Nr. 2 (1986), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Endangered Population: A Glimpse Inside the Over Glamorized Travel Nursing Profession
Creators: name: Hirani, Alizeh
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: travel
nursing
experiences
pandemic
career

description: Since the 1970s, travel nursing was introduced as a temporary solution to understaffed hospitals to bridge the gap between the supply and demand of healthcare workers. When the COVID-19 pandemic hit in 2020, there was already a significant nation-wide nursing shortage and burnout among those in the profession because the demand outweighed the supply of travel nurses in various hotspots (metropolitan cities with a high number of COVID cases). Though, registered nurses make up a large majority of the healthcare sector, they are one of the most overworked segments in the healthcare industry. In this exploratory study, I am to answer my research questions which is as follows: How has the mindset or atmosphere of the hospital personnel altered as a result of the facts shown above regarding the overworked employees in the healthcare industry? Is there a supportive and encouraging environment in which nurses may carry out their jobs? Has the load placed on healthcare personnel by COVID-19 grown or decreased? To depict the change in demand occurred COVID-19, fifteen female travel nurses between the ages of 25 and 40 were interviewed about their experiences during and after the pandemic, as well as how these experiences affected their decisions to stay in their current jobs or change their career paths. In my results, the answers from the subjects showed how hard they were being pushed because they said they were tired, stressed, and close to breaking. The participants were conflicted about integrating into their new environments and required additional emotional support. Two of the participants from Canada and the United Kingdom experienced a cultural barrier of fitting in. My findings indicate that the pandemic workplaces affected the dispersion of the nursing workforce and widened gaps in the nurse supply. Along with this, they will explain the transferability of skills they have and their adaptations to the United States healthcare. My findings lead to a discussion regarding how their experiences has impacted the nurses' career trajectory resolutions. Future studies about the nurse burnout and rise of travel nurses during COVID-19 are needed to be studied long-term effects of this specific profession.
Terrain Classification using Transfer Learning on Hyperspectral Images: A Comparative study
Creators: name: Singh, Uphar
name: Saurabh, Kumar
name: Trehan, Neelaksh
name: Vyas, Ranjana
name: Vyas, O. P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: A Hyperspectral image contains much more number of channels as compared to a RGB image, hence containing more information about entities within the image. The convolutional neural network (CNN) and the Multi-Layer Perceptron (MLP) have been proven to be an effective method of image classification. However, they suffer from the issues of long training time and requirement of large amounts of the labeled data, to achieve the expected outcome. These issues become more complex while dealing with hyperspectral images. To decrease the training time and reduce the dependence on large labeled dataset, we propose using the method of transfer learning. The hyperspectral dataset is preprocessed to a lower dimension using PCA, then deep learning models are applied to it for the purpose of classification. The features learned by this model are then used by the transfer learning model to solve a new classification problem on an unseen dataset. A detailed comparison of CNN and multiple MLP architectural models is performed, to determine an optimum architecture that suits best the objective. The results show that the scaling of layers not always leads to increase in accuracy but often leads to overfitting, and also an increase in the training time.The training time is reduced to greater extent by applying the transfer learning approach rather than just approaching the problem by directly training a new model on large datasets, without much affecting the accuracy.
Shooting for Success: an Analysis of Predictive Basketball Analytics
Creators: name: Geelhoed, Devin
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: basketball
statistics
analytics
prediction
forecasting
NBA
machine learning
equations
sports

description: Basketball has changed greatly over recent years, thanks to the data-driven revolution in the way the game is played. Models to predict player and team performance are increasingly popular for team personnel to focus on what they are most successful at, for analysts to break down where advantages and disadvantages are had for different players or teams, and for viewers to create their own opinions on the players or teams they want to succeed or fail and inform betting decisions. This thesis seeks to define where current predictive analytics are lacking with a multimodal examination of three ways we analyze the game: equation-based prediction, machine learning prediction, and human prediction. The thesis focuses on each of these three methods of forecasting in turn, noting their strengths and weaknesses. Additionally, with equation-based prediction, the thesis provides an example model of Expected Points to project the outcome of a certain shot from a certain player. Lastly, the thesis focuses on future developments in predictive analytics and the ways they are shaping the basketball viewing experience.
A method to computationally screen for tunable properties of crystalline alloys
Creators: name: Woods-Robinson, Rachel
name: Horton, Matthew K.
name: Persson, Kristin A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Conventionally, high-throughput computational materials searches start from an input set of bulk compounds extracted from material databases, and this set is screened for candidate materials for specific applications. In contrast, many functional materials, and especially semiconductors, are heavily engineered alloys or solid solutions of multiple compounds rather than a single bulk compound. To improve our ability to design functional materials, in this work we propose a framework and open-source code to automatically construct possible "alloy pairs" and "alloy systems" and detect "alloy members" from a set of existing, experimental or calculated ordered compounds, without requiring any additional metadata beyond their crystal structure. We provide analysis tools to estimate stability across each alloy. As a demonstration, we apply this framework to all inorganic materials in the Materials Project database to create a new database of over 600,000 unique alloy pair entries that can then be used in materials discovery studies to search for materials with tunable properties. This new database has been incorporated into the Materials Project website and linked with corresponding material identifiers for any user to query and explore. Using an example of screening for p-type transparent conducting materials, we demonstrate how using this methodology reveals candidate material systems that might otherwise have been excluded by a traditional screening. This work lays a foundation from which materials databases can go beyond stoichiometric compounds, and approach a more realistic description of compositionally tunable materials.
title: Notizen zum Bauen und Wohnen im ausgehenden Mittelalter (3). Dargestellt an südwestdeutschen Hausbauten
Creators: name: Lohrum, Burghard
name: Bleyer, Hans-Jürgen
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 15, Nr. 3 (1986), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Decentralized and Coordinated Vf Control for Islanded Microgrids Considering DER Inadequacy and Demand Control
Creators: name: She, Buxin
name: Li, Fangxing
name: Cui, Hantao
name: Wang, Jinning
name: Min, Liang
name: Snapps, Oroghene Oboreh
name: Bo, Rui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper proposes a decentralized and coordinated voltage and frequency (Vf) control framework for islanded microgrids, with full consideration of the limited capacity of distributed energy resources (DERs) and Vf dependent load. First, the concept of DER inadequacy is illustrated with the challenges it poses. Then, a decentralized and coordinated control framework is proposed to regulate the output of inverter based generations and reallocate limited DER capacity for Vf control. The control framework is composed of a power regulator and a Vf regulator, which generates the supplementary signals for the primary controller. The power regulator regulates the output of grid forming inverters according to the real time capacity constraints of DERs, while the Vf regulator improves the Vf deviation by leveraging the load sensitivity to Vf. Next, the static feasibility and small signal stability of the proposed method are rigorously proven through mathematical formulation and eigenvalue analysis. Finally, a MATLAB Simulink simulation demonstrates the functionalities of the control framework. A few goals are fulfilled within the decentralized and coordinated framework, such as making the best use of limited DERs capacity, enhancing the DC side stability of inverter based generations, and reducing involuntary load shedding.
The growth and/or survival of Listeria Monocytogenes, Yersinia Enterocolitica and Campylobacter jejuni under modified atmospheres at 4°C and 8°C in model food systems
Creators: name: Harrison, Wendy Anne
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Microbiology not elsewhere classified

description: This thesis reports on the use of solid-phase and liquid model food systems to estimate dynamic growth data for Listeria monocytogenes and Yersinia enterocolitica and the survival of Campylobacter jejuni under modified atmospheres and refrigeration temperatures. Modified atmospheres included 5% O²: l0% CO²:85% N² (MA1), 30% CO²:70% N² (MA²) and aerobic conditions at 4°C and 8°C. Computer image analysis recorded macro-colony growth on agar surfaces. Correlation of bacterial colony radius to viable cell number allowed estimation of dynamic growth data for L. monocytogenes and Y. enterocolitica. Image analysis techniques were developed allowing estimation of dynamic growth data for micro-colonies under MA1 and aerobic conditions, using area to estimate colony size. Morphological change in Camp. jejuni cells on agar surfaces was determined after storage under atmospheres and temperatures of study and survival after storage was determined by incubating the cells under ideal conditions (microaerophilic; 37°C). All solid culture models were compared with liquid culture. 30% C0² significantly (p<0.01) suppressed the growth of L. monocytogenes and Y. enterocolitica macro-colonies especially at 4°C (3 and 2.5 fold decrease in specific growth rate, respectively compared with aerobic conditions). A significant (p<0.05) decrease was observed for Y. enterocolitica micro-colonies (approximate 1.5 fold) at 4°C compared with aerobic conditions and identical rates were obtained for L. monocytogenes (0.02 h-1). At 8°C similar growth rates were obtained under MA1 and aerobic conditions for both organisms. Growth in liquid culture showed similar findings to macro- and micro- colony growth. Survival of Carnp. jejuni was enhanced under 30% CO² as compared with aerobic conditions. Modifying the atmosphere reduced the morphological shift of the cells to the coccoid form on agar surfaces during resuscitation at37°C. This thesis extends the knowledge of the behaviour of foodborne pathogens in foods under MAP. The micro-colony technique coupled with image analysis improves the understanding of the change in cell morphology and growth under MAs and refrigeration temperatures.
Civil Rights Cases and the Composition of the U.S. Supreme Court
Creators: name: Gonzalez, Nicolas
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: U.S. Supreme Court
civil rights
apellate
law
government

description: “Civil Rights Cases and the Composition of the U.S. Supreme Court” seeks to fill the gap in the existing academic literature regarding the relationship between the appearance of civil rights appeals on the U.S. Supreme Court’s docket each term and its ideological composition. Using a combination of statistical analysis, literature review, and historical investigation, this honors thesis provides reasons as to why an observable increase in civil rights appeals occurs as the Court grows more conservative. Namely, it explores the increased Court activity regarding civil rights during the Civil Rights Era, Women’s Liberation Movement, and the 1980s, analyzing the legacies of Chief Justices Warren, Burger, and Rehnquist. By viewing these different Courts within their relationship to public opinion and the intentions of the U.S. presidents who nominated its members, a clearer image emerges regarding the Supreme Court’s advocate-like tendencies. While options such as the Rule of Four exist—which could suggest that the liberal coalition that has consistently comprised the Court’s minority since 1969 plays some role in adding civil rights-related appeals to the docket—the relationship between this coalition and the median justice suggests otherwise. Ultimately, this paper serves to elucidate the oft-ignored certiorari stage of the U.S. Supreme Court’s behavior as a means of understanding the motivations of ideological factions on the Court.
title: Programm des Landesdenkmaltages Baden-Württemberg in Mannheim
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 16, Nr. 1 (1987), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
A statistical mechanics for immiscible and incompressible two-phase flow in porous media
Creators: name: Hansen, Alex
name: Flekkøy, Eirik G.
name: Sinha, Santanu
name: Slotte, Per Arne
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We construct a statistical mechanics for immiscible and incompressible two-phase flow in porous media under local steady-state conditions based on the Jaynes maximum entropy principle. A cluster entropy is assigned to our lack of knowledge of, and control over, the fluid and flow configurations in the pore space. As a consequence, two new variables describing the flow emerge: The agiture, that describes the level of agitation of the two fluids, and the flow derivative which is conjugate to the saturation. Agiture and flow derivative are the analogs of temperature and chemical potential in standard (thermal) statistical mechanics. The associated thermodynamics-like formalism reveals a number of hitherto unknown relations between the variables that describe the flow, including fluctuations. The formalism opens for new approaches to characterize porous media with respect to multi-phase flow for practical applications, replacing the simplistic relative permeability theory while still keeping the number of variables tractable.
description: 15 pages, 4 figures
Hydrodynamic studies of aqueous two-phase systems in millichannels
Creators: name: Gande, Vamsi Vikram
name: K, Hima Nandini
name: Korukonda, Jagadeesh
name: Pushpavanam, S
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Liquid-liquid segmented flows in microchannels have been extensively investigated in the context of nanoparticle synthesis. The enhanced mixing in the slugs results in monodispersed particles. Earlier studies have focused on Organic-Aqueous Systems (OAS). The nanoparticles synthesized in the presence of organic solutions have limited applications. An alternative green route for the synthesis can be developed using an Aqueous Two-Phase System (ATPS). These systems are characterized by interfacial tensions, which are two orders of magnitude lower than typical organic aqueous systems. In this work, flow patterns and hydrodynamics of ATPS are investigated as a first step. Polyethylene glycol -trisodium citrate system was chosen as ATPS. The objective of this work is to see if any new physics arises in an ATPS system. The low interfacial tension results in high Capillary numbers (Ca >> 3) in a microfluidic system. Consequently, the flow observed here is parallel or core-annular. However, in a millichannel, the capillary number becomes lower (Ca << 1) for an ATPS system. In this work, experiments were carried out in a millichannel to span different flow patterns. The pattern formation was analyzed and classified into three categories, i.e., slug flow (interfacial tension dominated), transition flow, and core annular flow (inertia dominated). Flow regime maps based on the Reynolds number, Capillary number, and Weber number of each phase were found to be qualitatively similar to those of OAS. Simulations were performed for various interfacial tension values. An interfacial tension value of 1.25x10-4 N/m was found to yield slug sizes which fitted well with the experimental data. Film thickness was measured experimentally and with simulations compared favorably with the correlations available in the literature for OAS.
Tidal disruption events from eccentric orbits and lessons learned from the noteworthy ASASSN-14ko
Creators: name: Liu, Chang
name: Mockler, Brenna
name: Ramirez-Ruiz, Enrico
name: Yarza, Ricardo
name: Law-Smith, Jamie A. P.
name: Naoz, Smadar
name: Melchor, Denyz
name: Rose, Sanaea
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Stars grazing supermassive black holes (SMBHs) on bound orbits may survive tidal disruption, causing periodic flares. Inspired by the recent discovery of the periodic nuclear transient ASASSN-14ko, a promising candidate for a repeating tidal disruption event (TDE), we study the tidal deformation of stars approaching SMBHs on eccentric orbits. With both analytical and hydrodynamics methods, we show the overall tidal deformation of a star is similar to that in a parabolic orbit provided that the eccentricity is above a critical value. This allows one to make use of existing simulation libraries from parabolic encounters to calculate the mass fallback rate in eccentric TDEs. We find the flare structures of eccentric TDEs show a complicated dependence on both the SMBH mass and the orbital period. For stars orbiting SMBHs with relatively short periods, we predict significantly shorter-lived duration flares than those in parabolic TDEs, which can be used to predict repeating events if the mass of the SMBH can be independently measured. Using an adiabatic mass loss model, we study the flare evolution over multiple passages, and show the evolved stars can survive many more passages than main sequence stars. We apply this theoretical framework to the repeating TDE candidate ASASSN-14ko and suggest that its recurrent flares originate from a moderately massive ($M\gtrsim 1 \mathrm{M_\odot}$), extended ($\approx$ a few $\mathrm{R_\odot}$), evolved star on a grazing, bound orbit around the SMBH. Future hydrodynamics simulations of multiple tidal interactions will enable realistic models on the individual flare structure and the evolution over multiple flares.
description: 19 pages, 9 figures. Updated to accepted version (ApJ)
Quenched disorder and vestigial nematicity in the pseudo-gap regime of the cuprates
Creators: name: Nie, Laimei
name: Tarjus, Gilles
name: Kivelson, S. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have carried out a theoretical analysis of the Landau-Ginzburg-Wilson effective field theory of a classical incommensurate CDW in the presence of weak quenched disorder. While the possibility a sharp phase transition and long-range CDW order are precluded in such systems, we show that any discrete symmetry breaking aspect of the charge order -- nematicity in the case of the unidirectional (stripe) CDW we consider explicitly -- generically survives up to a non-zero critical disorder strength. Such "vestigial order", which is subject to unambiguous macroscopic detection, can serve as an avatar of what would be CDW order in the ideal, zero disorder limit. Various recent experiments in the pseudo-gap regime of the hole-doped cuprate high-temperature superconductors are readily interpreted in light of these results.
description: References updated in v2; 38 pages, 3 figures, including 16-page main text and 22-page supplemental material
The Implications of Gender Identity Representations in Marketing Strategies of Lifestyle Sports
Creators: name: Govett, Abigail
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: lifestyle sports
gender
gender identity
outdoor recreation

description: Hetero-normative gender stereotypes surround us: in school, in work, in social settings, and in cultural aspects as well, such as hobby participation or consumerism. This thesis examines key gender identity traits - whether masculine or feminine - as they pertain to the marketing of lifestyle sports goods. This paper examines the marketing strategies of lifestyle sports (specifically skiing and biking) from a variety of lenses: the marketing messaging that is attempting to sell the product, the functional use of the product, and the outward appearance design of the product. This paper strives to understand the current marketing landscapes of the ski and bike industries and whether or not such gender identity traits are used to sell products. Further, this paper analyzes the potential impacts of using gender identity traits to market lifestyle sport products and whether or not the current marketing strategies influence access and participation to lifestyle sports.
Computational complexity of time-dependent density functional theory
Creators: name: Whitfield, J. D.
name: Yung, M. -H.
name: Tempel, D. G.
name: Boixo, S.
name: Aspuru-Guzik, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Time-dependent density functional theory (TDDFT) is rapidly emerging as a premier method for solving dynamical many-body problems in physics and chemistry. The mathematical foundations of TDDFT are established through the formal existence of a fictitious non-interacting system (known as the Kohn-Sham system), which can reproduce the one-electron reduced probability density of the actual system. We build upon these works and show that on the interior of the domain of existence, the Kohn-Sham system can be efficiently obtained given the time-dependent density. Since a quantum computer can efficiently produce such time-dependent densities, we present a polynomial time quantum algorithm to generate the time-dependent Kohn-Sham potential with controllable error bounds. As a consequence, in contrast to the known intractability result for ground state density functional theory (DFT), the computation of the necessary time-dependent potentials given the initial state is in the complexity class described by bounded error quantum computation in polynomial time (BQP).
Measurement of a spin-1 system
Creators: name: Di Lorenzo, Antonio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive exact formulas describing an indirect von Neumann measurement of a spin-1 system. The results hold for any interaction strength and for an arbitrary output variable $\Hat{O}$.
description: 13 pages; comments welcome. V2 25 pages, close to published version, added two appendices reformulating a result from Dressel and Jordan in terms of the quantum characteristic function
Creativity and prosperity: an unsupervised machine learning approach to modeling creative human capital
Creators: name: Yemen, Cory Robert
Publisher: name: No Publisher Supplied
Year: 2023

description: Innovation and the creativity that underlies it are the driving forces behind regional prosperity. Moretti (2012), an economist, highlights that employment in innovative occupations portends high wages and associated multiplier effects. Conversely, Sawyer (2012), a psychologist, articulates that the lack of creativity in occupations dampens wages or eliminates employment outright. In concert, they highlight the importance of a workforce prepared for innovative or creative production. The widespread attention to and endurance of the Creative Class Hypothesis (Florida, 2002) suggests that there are salient aspects of the theory meriting continued attention and articulation. The salient aspects are those that elicit the comparison to, and failure of some to distinguish between, what is called creative capital and human capital, more generally. The distinction is not conceptual but rather procedural, where human capital is construed too narrowly and typically confined to education, training, and work experience (using worker age as a proxy). This dissertation uses insights from psychology literature to help define a creativity metric using unsupervised learning, compares it to existing measures of creative or knowledge workers, and quantitatively explore its association with wages, the wage distribution, and inter-metropolitan migration. The ultimate purpose is to determine if a rationale can be identified for public intervention in promulgating a creative workforce.
Quantum design in study of pycnonuclear reactions in compact stars and new quasibound states
Creators: name: Maydanyuk, Sergei P.
name: Shaulskyi, Kostiantyn A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Pycnonuclear reactions in the compact stars at zero temperatures are studied on quantum mechanical basis in the paper. Formalism of multiple internal reflections is generalized for analysis, that was developed for nuclear decays and captures by nuclei with high precision and tests. For the chosen reaction $^{12}$C + $^{12}$C = $^{24}$Mg, we find the following. A quantum study of the pycnonuclear reaction requires a complete analysis of quantum fluxes in the internal nuclear region. This reduces rate and number of pycnonuclear reactions by 1.8 times. This leads to the appearance of new states (called as quasibound states) where the compound nuclear system is formed with maximal probability. As shown, minimal energy of such a state is a little higher than energy of zero-point vibrations in lattice sites in pycnonuclear reaction, however probability of formation of compound system at the quasibound state is essentially larger than the corresponding probability at state of zero-point vibrations. Hence, there is a sense to tell about reaction rates in such quasibound states as more probable, rather than states of zero-point vibrations. This can lead to the essential changes in estimation of the rates of nuclear reactions in stars.
description: 19 pages, 6 figures
The Bergman Shift Operator on Polynomial Lemniscates
Creators: name: Simanek, Brian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We investigate the relationship between the Bergman shift operator and the support of the corresponding measure. We pay special attention to the situation when the measure of orthogonality is concentrated on a polynomial lemniscate. As an application of our new results, we obtain a ratio asymptotic result for a wide variety of measures supported on polynomial lemniscates.
description: 15 pages; version 2: small correction to Lemma 4.1, extended bibliography