cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Constraints on Alternate Universes: Stars and habitable planets with different fundamental constants
Creators: name: Adams, Fred C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This paper develops constraints on the values of the fundamental constants that allow universes to be habitable. We focus on the fine structure constant $α$ and the gravitational structure constant $α_G$, and find the region in the $α$-$α_G$ plane that supports working stars and habitable planets. This work is motivated, in part, by the possibility that different versions of the laws of physics could be realized within other universes. The following constraints are enforced: [A] long-lived stable nuclear burning stars exist, [B] planetary surface temperatures are hot enough to support chemical reactions, [C] stellar lifetimes are long enough to allow biological evolution, [D] planets are massive enough to maintain atmospheres, [E] planets are small enough in mass to remain non-degenerate, [F] planets are massive enough to support sufficiently complex biospheres, [G] planets are smaller in mass than their host stars, and [H] stars are smaller in mass than their host galaxies. This paper delineates the portion of the $α$-$α_G$ plane that satisfies all of these constraints. The results indicate that viable universes --- with working stars and habitable planets --- can exist within a parameter space where the structure constants $α$ and $α_G$ vary by several orders of magnitude. These constraints also provide upper bounds on the structure constants ($α,α_G$) and their ratio. We find the limit $α_G/α<10^{-34}$, which shows that habitable universes must have a large hierarchy between the strengths of the gravitational force and the electromagnetic force.
description: 24 pages, 3 figures, updated in response to the referee
MPEC 2024-C11 : 2024 BT4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 BT4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: Ventriculitis purulenta
Creators: name: Teneva, Tsvetelina
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Infection
subject: Cerebrospinal fluid
subject: Education
subject: Ultrasound
subject: MR-Diffusion/Perfusion
subject: CT
subject: Neuroradiology brain
subject: Emergency
subject: CNS

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The aim of this educational poster is: - To demonstrate the radiological appearance of ventriculitis; - To illustrate the role of imaging in the management of ventriculitis; - To assess the diagnostic accuracy of computer tomography (CT), magnet...
Isomorphisms considered as equalities: Projecting functions and enhancing partial application through and implementation of lambda+
Creators: name: Díaz-Caro, Alejandro
name: López, Pablo E. Martínez
Publisher: name: arXiv
Year: 2015
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.4.1

description: We propose an implementation of lambda+, a recently introduced simply typed lambda-calculus with pairs where isomorphic types are made equal. The rewrite system of lambda+ is a rewrite system modulo an equivalence relation, which makes its implementation non-trivial. We also extend lambda+ with natural numbers and general recursion and use Bekić's theorem to split mutual recursions. This splitting, together with the features of lambda+, allows for a novel way of program transformation by reduction, by projecting a function before it is applied in order to simplify it. Also, currying together with the associativity and commutativity of pairs gives an enhanced form of partial application.
description: A prototype writen in Haskell can be found at http://diaz-caro.web.unq.edu.ar/IsoAsEq-v1.0.tar.gz
Czech quantifier scope
Creators: name: Šimík, Radek
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Other Linguistics
subject: Linguistics
subject: FOS: Languages and literature
subject: Social and Behavioral Sciences

description: In this experiment we ask the question whether inverse scope is possible in Czech doubly-quantified sentences and if it is constrained in any way. The project is part of an empirical methods course carried out at the Institute of Czech Language and Theory of Communication, Faculty of Arts, Charles University.
Learning the way to a clean energy economy: the role of community colleges in green economic development
Creators: name: Archer-Rosenthal, Dana
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: The transition to a clean energy economy is rich with promises for a country suffering the consequences of a deep economic recession and several decades' worth of change in the national and global economies. The manufacture of clean energy technologies and equipment offer the country a chance to reestablish its competitiveness in goods-producing sectors, thereby rescuing the country's emaciated manufacturing sector and its displaced workers. Further, the fields of energy efficiency and weatherization have been heralded for their ability to put thousands of low-income individuals to work in the service of lowering household energy expenditures. Jobs in clean energy fields are often referred to as green-collar jobs for their ability to provide individuals with high-quality, career track jobs that provide a family-supporting wage. The choice of the term "green-collar" is a clear reference to the "blue-collar" jobs of earlier decades-skilled and semi-skilled jobs in homegrown industries that offered long-term job security and decent wages. Blue-collar jobs, which built the country's middle class in the decades following World War II, have largely disappeared as a result of global economic restructuring-a disruptive set of processes that have included technological change, the globalization of markets, shortened production cycles and competition from foreign companies and labor markets. This paper presents case studies of Cleveland State Community College and Hocking College, two community colleges that are positioning themselves as leaders in the transition to a green economy by offering unique and innovative training programs focused on preparing students to work in green-collar jobs in both traditional sectors and industries and newer, green industries. The purpose of offering these two studies is to draw out the way in which local circumstances affect the approach of the community college to preparing workers for green industries and occupations. The similarities between the two institutions-and the resulting similarities in how they have structured their programs-offer promising practices for community colleges in rural and distressed areas that are seeking to undertake green economic development. The differences between the two highlight ways in which the programs are adapted to their unique circumstances-and what prospects this offers for each program to play a role in furthering appropriate green economic development: that is, the pursuit of economic recovery and growth through the promotion and support of clean energy sectors and industries.
title: MR imaging of acute non-traumatic spinal cord syndrome
Creators: name: Ripoll, Enric
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Neuroradiology spine
subject: CNS
subject: Emergency
subject: MR
subject: Education
subject: Imaging sequences
subject: Diagnostic procedure
subject: Acute
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To present the MRI features of the different causes of acute non-traumatic spinal cord syndrome To point out what clinical information must be provided To show different spine MRI protocols recommended for each diagnostic suspicion To learn the...
On scalar curvature invariants in three dimensional spacetimes
Creators: name: Musoke, N. K.
name: McNutt, D. D.
name: Coley, A. A.
name: Brooks, D. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We wish to construct a minimal set of algebraically independent scalar curvature invariants formed by the contraction of the Riemann (Ricci) tensor and its covariant derivatives up to some order of differentiation in three dimensional (3D) Lorentzian spacetimes. In order to do this we utilize the Cartan-Karlhede equivalence algorithm since, in general, all Cartan invariants are related to scalar polynomial curvature invariants. As an example we apply the algorithm to the class of 3D Szekeres cosmological spacetimes with comoving dust and cosmological constant $Λ$. In this case, we find that there are at most twelve algebraically independent Cartan invariants, including $Λ$. We present these Cartan invariants, and we relate them to twelve independent scalar polynomial curvature invariants (two, four and six, respectively, zeroth, first, and second order scalar polynomial curvature invariants).
description: 24 pages. Minor changes, version as published in General Relativity and Gravitation
Value-guided construal experiment 1
Creators: name: Ho, Mark
name: Cohen, Jonathan
name: Griffiths, Tom
name: Abel, David
name: Littman, Michael
name: Correa, Carlos
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Life Sciences
subject: Quantitative Psychology
subject: Cognition and Perception
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Other Social and Behavioral Sciences

description: See main document
The Spencer's Inc. Mill redevelopment opportunity and its potential role in meeting the housing needs of Mount Airy and Surry County
Creators: name: Gillespie, Erin Rae
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Spencer's Inc. is a textile manufacturing company that was an active part of the Mount Airy economy for almost 100 years. When it closed its doors in 2007, the downtown mill became a baby blue icon for the loss of an industry that had defined Mount Airy in its physical look, its social atmosphere, and its role in the economic region (baby blue was Spencer's Inc. trademark color). The 10-acre complex is located in the downtown core and is ripe for redevelopment. Its rehabilitation can address Mount Airy's and Surry County's current needs, especially its housing needs. It can also provide amenities and services needed by the town's constantly growing tourism and recreation industry. Mount Airy, which is often colloquially called "Mayberry," has a strong sense of community and history. The city has shown its support for Adaptive Reuse projects through previous mill rehab projects like Renfro Mill and Globe Tobacco Lofts. The Spencer's Inc. complex provides the city and local developers a new opportunity to continue to value its history while providing the space for its modern spatial needs all in light of a recent economic downturn.
title: Brain findings on whole-body 18F-FDG PET/CT in patients with non-central nervous system malignancy
Creators: name: Zlatareva, Dora
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Multidisciplinary cancer care
subject: Metastases
subject: Cancer
subject: Staging
subject: Molecular imaging
subject: PET-CT
subject: Molecular imaging
subject: Management
subject: CNS

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Whole-body 18F-FDG PET/CT is widely used in oncology for the diagnosis and staging of variety of malignancies[1]. The combination of anatomical and functional information is more accurate than CT or PET imaging alone. This hybrid imaging is useful...
On the nature of an emergent symmetry in QCD
Creators: name: Cohen, Thomas D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Remarkable symmetry properties appear to arise in lattice calculations of correlation functions in which the lowest-lying eigenmodes of the Dirac operator in quark propagators are removed by hand. The Banks-Casher relation ties the chiral condensate to the density of low lying modes; thus, it is plausible that removal of such modes could lead to a regime where spontaneous chiral symmetry breaking does not occur. Surprising, a pattern of identical correlation functions was observed that is larger than can be explained by a restoration of chiral symmetry. This suggests that a larger symmetry---one that is not present in the QCD lagrangian---emerges when these modes are removed. Previously it was argued that this emergent symmetry was SU(4). However, when the low-lying modes are removed, the correlation functions of sources in the SU(4) 15-plet of spin-1 mesons appear to coincide with the correlation function of the SU(4) singlet. A natural explanation for this is an emergent symmetry larger than SU(4). In this work, it is shown that there exists no continuous symmetry whose generators in the field theory are spatial integrals of local operators that can account for the full pattern of identical correlation functions unless the apparent coincidence of the singlet channel with the 15-plet is accidental.
description: References added; A few clarifying comments added
When Johnny comes marching home, where is home? A look at where homeless veterans are finding housing and implications for HUD-VASH
Creators: name: Brandes, Jessica
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: The HUD-VA Supported Housing Program was initially implemented in 1992 as a pilot program that combined VA supportive services with Housing Choice Vouchers for homeless veterans. Expanded in scope and numbers in 2008, the HUD-VASH program has begun to allow homeless veterans to move into permanent housing around the country. This study begins to look at where these veterans are finding housing, and concludes that most veterans are moving to areas of relatively high poverty, high renter-occupancy rates, high rates of families headed by females, and low median incomes. In particular, the majority of veterans in the sample moved to areas with high neighborhood indicators for violent crime and poor mental health. Several recommendations are put forward to improve outcomes for the program.
title: MR imaging (MRI) and MR angiography (MRA) in acute thalamic infarction
Creators: name: Inatsuki, Chihiro
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: CNS
subject: Emergency
subject: MR
subject: MR-Angiography
subject: Diagnostic procedure
subject: Ischaemia / Infarction

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The thalamus affected in various stroke syndromes, including isolated thalamic infarct, posterior cerebral artery (PCA) territory infarct, top of the basilar artery (BA) syndrome and extended posterior circulation infarct. [1] Lateral thalamic...
Holographic thermalization with initial long range correlation
Creators: name: Lin, Shu
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We studied the evolution of Wightman correlator in a thermalizing state modeled by AdS_3-Vaidya background. We gave a prescription for calculating Wightman correlator in coordinate space without using any approximation. For equal-time correlator $\langle O(v,x)O(v,0)\rangle$, we obtained an enhancement factor $v^2$ due to long range correlation present in the initial state. This was missed by previous studies based on geodesic approximation. We found that the long range correlation in initial state does not lead to significant modification to thermalization time as compared to known results with generic initial state. We also studied spatially integrated Wightman correlator and showed evidence on the distinction between long distance and small momentum physics for an out-of-equilibrium state. We also calculated radiation spectrum of particle weakly coupled to $O$ and found lower frequency mode approaches thermal spectrum faster than high frequency mode.
description: 24 pages, 6 figures
Effects of caffeine intake on pupil control in humans: Protocol for a systematic review
Creators: name: Hartmann, Elias
name: Reichert, Carolin
name: Spitschan, Manuel
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medical Sciences
subject: Cognitive Neuroscience
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Medicine and Health Sciences
subject: Life Sciences
subject: Biological Psychology
subject: Neuroscience and Neurobiology
subject: Vision Science
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Medical Pharmacology
subject: Engineering
subject: Biomedical Engineering and Bioengineering

description: Pre-registration for PRISMA-P protocol v1.1 [20210428]
Quantum Enhanced Measurement of Rotations with a Spin-1 Bose-Einstein Condensate in a Ring Trap
Creators: name: Nolan, Samuel P.
name: Sabbatini, Jacopo
name: Bromley, Michael W. J.
name: Davis, Matthew J.
name: Haine, Simon A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present a model of a spin-squeezed rotation sensor utilising the Sagnac effect in a spin-1 Bose-Einstein condensate in a ring trap. The two input states for the interferometer are seeded using Raman pulses with Laguerre-Gauss beams and are amplified by the bosonic enhancement of spin-exchange collisions, resulting in spin-squeezing and potential quantum enhancement in the interferometry. The ring geometry has an advantage over separated beam path atomic rotation sensors due to the uniform condensate density. We model the interferometer both analytically and numerically for realistic experimental parameters and find that significant quantum enhancement is possible, but this enhancement is partially degraded when working in a regime with strong atomic interactions.
description: 13 pages, 9 figures
title: Establishing a new protocol for pulmonary CT angiography using the lowest possible amount of iodinated contrast
Creators: name: Hazaimeh, Bilal
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Pulmonary vessels
subject: Cardiovascular system
subject: Thorax
subject: CT-Angiography
subject: Efficacy studies

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The aim of this study is to find out the lowest possible volume of iodinated contrast media needed to yield an interpretable pulmonary CT angiography relying on the basic human physiology...
Where new firms sprout: the effect of localization and real estate market effects on new firm location patterns
Creators: name: Neary, Kevin F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: This paper examines the historic location pattern of new firms in North Carolina's Research Triangle region between 1990 and 2008. To better understand the relationship between new firm locations, network localization effects, and market forces, I create the historic record of entrepreneurship within the Triangle region using data from the National Establishment Time Series. This data is then matched by ZIP code with corresponding ESRI demographic data and commercial real estate market data from CoStar Group, Inc. Using this combined dataset, I then examine the correlations between various ZIP demographic environments, their localization characteristics, their prevailing commercial real estate market conditions, and their share of new firm formation. In doing so, I first explore which ZIP environments have historically encouraged new firm formation by examining each of these variables in isolation. Then, using Ordinary Least Squares (OLS) regression modeling, I jointly examine the effects of localization network effects and commercial real estate market factors concurrently upon new firm location within ZIP codes, to determine which variable has the strongest effect on new firm location. This research attempts to disentangle the related intra-regional socio-spatial forces that spawn entrepreneurialism and drive endogenous economic growth. My findings suggest that in isolation, new firms may exhibit location preferences that include: urban locations as opposed to rural, proximity to a strong university, and price motivation by lower facility rental rates. However, when considered altogether, the number of existing firms in an area is both the strongest and only significant predictor of new firm location.
Summation-by-parts operators for correction procedure via reconstruction
Creators: name: Ranocha, Hendrik
name: Öffner, Philipp
name: Sonar, Thomas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The correction procedure via reconstruction (CPR, formerly known as flux reconstruction) is a framework of high order methods for conservation laws, unifying some discontinuous Galerkin, spectral difference and spectral volume methods. Linearly stable schemes were presented by Vincent et al. (2011, 2015), but proofs of non-linear (entropy) stability in this framework have not been published yet (to the knowledge of the authors). We reformulate CPR methods using summation-by-parts (SBP) operators with simultaneous approximation terms (SATs), a framework popular for finite difference methods, extending the results obtained by Gassner (2013) for a special discontinuous Galerkin spectral element method. This reformulation leads to proofs of conservation and stability in discrete norms associated with the method, recovering the linearly stable CPR schemes of Vincent et al. (2011, 2015). Additionally, extending the skew-symmetric formulation of conservation laws by additional correction terms, entropy stability for Burgers' equation is proved for general SBP CPR methods not including boundary nodes.
description: 40 pages, 14 figures
title: CT-analysis of acetabular component position in mechanically guided vs free-hand anatomical-landmarks techniques.
Creators: name: Dedyurin, Andrey
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Prostheses
subject: Surgery
subject: Outcomes analysis
subject: CT
subject: Pelvis
subject: Musculoskeletal joint
subject: Bones

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: CT-analysis of the cup position in- or outside the “safe zone” in mechanical guide (MG) vs free-hand (with using transverse acetabular ligament (TAL) by Beverland, et al.)...
Employee residential location choice: how existing supply and neighborhood characteristics impact housing preferences in Chapel Hill, NC
Creators: name: Eklund, Brika L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Chapel Hill, North Carolina is an intriguing case study with which to explore housing options for specific populations. The established institutions of UNC-Chapel Hill and UNC Hospitals offer centralized employment options that attract faculty and staff from throughout the region and across the country. Unlike some cities where both housing and employment options are decentralized, the latter is not the case in Chapel Hill as both institutions are firmly rooted in the community. Despite this centralized location, employees live both within and outside town limits because of the interplay between limited affordable housing supply, high prices for existing units, income constraints, and neighborhood characteristics that may impact residential location choices. This study explores the residential location patterns of three employee population groups -- delineated by household income and employer type -- and investigates the individual, household, and neighborhood characteristics that correlate with their residential location choices. This study finds that while individual and household characteristics are not correlated with residential location choice, employees within each group tend to reside distances away from UNC-Chapel Hill that have similar characteristics such as racial composition, educational status, and degree of homeownership within neighborhoods. This study also provides an example methodology of how to explore the distance away from campus that newly-employed workforce households would likely live if income was not a constraining factor and all pertinent independent variables were tested.
title: Phakomatoses: what every radiologist should know
Creators: name: Romera de la Fuente, Carmen
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Pathology
subject: Education and training
subject: Congenital
subject: Education
subject: Diagnostic procedure
subject: MR
subject: CT
subject: Paediatric
subject: Neuroradiology peripheral nerve
subject: CNS

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To make a systematic review of the most common radiological findings on phakomatoses through the iconography of the cases collected in our MRI unit between...
Dynamic Leidenfrost effect: relevant time- and length-scales
Creators: name: Shirota, Minori
name: van Limbeek, Michiel A. J.
name: Sun, Chao
name: Prosperetti, Andrea
name: Lohse, Detlef
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: When a liquid droplet impacts a hot solid surface, enough vapor may be generated under it as to prevent its contact with the solid. The minimum solid temperature for this so-called Leidenfrost effect to occur is termed the Leidenfrost temperature, or the dynamic Leidenfrost temperature when the droplet velocity is non-negligible. We observe the wetting/drying and the levitation dynamics of the droplet impacting on an (isothermal) smooth sapphire surface using high speed total internal reflection imaging, which enables us to observe the droplet base up to about 100 nm above the substrate surface. By this method we are able to reveal the processes responsible for the transitional regime between the fully wetting and the fully levitated droplet as the solid temperature increases, thus shedding light on the characteristic time- and length-scales setting the dynamic Leidenfrost temperature for droplet impact on an isothermal substrate.
Cloud of strings as source in $2+1$-dimensional $f( R) = R^n$ gravity
Creators: name: Mazharimousavi, S. Habib
name: Halilsoy, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present three parameters exact solutions with possible black holes in $% 2+1-$dimensional $f\left( R\right) =R^{n}$ modified gravity coupled minimally to a cloud of strings. These three parameters are $n,$ the cloud of string coupling constant $ξ$ and an integration constant $C$. Although in general one has to consider each set of parameters separately; for $n$ an even integer greater than one we give a unified picture providing black holes. For $n\geq 1$ we analyze null / timelike geodesic within the context of particle confinement.
description: 5 pages, no figures. Revised version
title: CTA to exclude Coronary Artery Disease
Creators: name: Upadhyay, Bhavin
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: CT-Angiography
subject: Cardiovascular system
subject: Diagnostic procedure
subject: Arteriosclerosis

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Understand the role of Cardiac CT Angiography and CT Calcium scoring in the management of chest pain and coronary artery...
Attractor-repeller pair of topological zero-modes in a nonlinear quantum walk
Creators: name: Gerasimenko, Y.
name: Tarasinski, B.
name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The quantum-mechanical counterpart of a classical random walk offers a rich dynamics that has recently been shown to include topologically protected bound states (zero-modes) at boundaries or domain walls. Here we show that a topological zero-mode may acquire a dynamical role in the presence of nonlinearities. We consider a one-dimensional discrete-time quantum walk that combines zero-modes with a particle-conserving nonlinear relaxation mechanism. The presence of both particle-hole and chiral symmetry converts two zero-modes of opposite chirality into an attractor-repeller pair of the nonlinear dynamics. This makes it possible to steer the walker towards a domain wall and trap it there.
description: 4 pages, 5 figures
Derived City
Creators: name: Liles, Corey
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The Derived City project is designed to serve as a companion dataset to the Hypothetical City Workbook. The content of this project is the basis for a series of Land Use Planning Exercises. Through these exercises, students have the opportunity to explore comprehensive planning and context-sensitive growth management mechanisms. To a great extent, this dataset parallels the format of Hypothetical City and becomes a substitute for Part II of the Workbook. The key difference is that Derived City is patterned after an actual small town. Derived City is intended to be an alternative to Hypo City. Both can be used by different groups in the same course of study to introduce variety. While the Hypothetical City offers group members the chance to use creativity in the visioning process, Derived City allows groups to explore a real place and use direct observation to support their community vision. The expectation is that different students will have different preferences and can choose the dataset which most appeals to them. To complete Land Use Planning Exercises for Derived City, the Hypothetical City Workbook will still be followed. Parts I, III, and IV remain largely unchanged, though of course 'Derived City' or 'Pittsboro, NC' would be substituted wherever 'Hypo City' appears. In the next section a Description of Derived City is provided, which substitutes for Part II of the Workbook. Slight adjustments will also be needed for Part III, Exercise 1, since students will not name or customize their town. In addition, the GIS layers and Excel spreadsheets submitted with this project will take the place of the CD that accompanies the Workbook.
Higgs bundles for real groups and the Hitchin-Kostant-Rallis section
Creators: name: García-Prada, Oscar
name: Peón-Nieto, Ana
name: Ramanan, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Geometry (math.AG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: Primary 14H60, Secondary 53C07, 58D29

description: We consider the moduli space of polystable $L$-twisted $G$-Higgs bundles over a compact Riemann surface $X$, where $G$ is a real reductive Lie group, and $L$ is a holomorphic line bundle over $X$. Evaluating the Higgs field at a basis of the ring of polynomial invariants of the isotropy representation, one defines the Hitchin map. This is a map to an affine space, whose dimension is determined by $L$ and the degrees of the polynomials in the basis. Building up on the work of Kostant-Rallis and Hitchin, in this paper, as a first step in the study of the Hitchin map, we construct a section of this map. This generalizes the section constructed by Hitchin when $L$ is the canonical line bundle of $X$ and $G$ is complex. In this case the image of the section is related to the Hitchin-Teichmüller components of the moduli space of representations of the fundamental group of $X$ in $G_{\mathrm{Split}}$, a split real form of $G$. In fact, our construction is very natural in that we can start with the moduli space for $G_{\mathrm{Split}}$, instead of $G$, and construct the section for the Hitchin map for $G_{\mathrm{Split}}$ directly. The construction involves the notion of maximal split subgroup of a real reductive Lie group.
description: 50 pages, we have made minor corrections to version 1 and suppressed the last section
title: MRI of the Posterior Cranial Fossa: Spectrum of Abnormalities in Adult Patients.
Creators: name: Patil, Prafulla
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: CNS
subject: Neuroradiology brain
subject: MR
subject: MR-Spectroscopy
subject: MR-Diffusion/Perfusion
subject: Education
subject: Neoplasia
subject: Metabolic disorders
subject: Inflammation

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The posterior cranial fossa is part of the intracranial cavity, located between the foramen magnum and tentorium cerebelli. Anteriorly, it extends to the apex of the petrous temporal bone and posteriorly, it is enclosed by the occipital bone. It...
title: Brain Stem and Cerebellar Volumetric Analysis in Spinocerebellar Ataxia Patients and Correlation with Clinical Findings
Creators: name: Tunççekiçler, Nurgül
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Genetic defects
subject: Diagnostic procedure
subject: Computer Applications-General
subject: Computer Applications-3D
subject: MR
subject: Neuroradiology brain
subject: Head and neck
subject: CNS

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Spinocerebellar ataxias (SCAs) are diverse and clinically heterogeneous group of disorders characterized by degeneration and dysfunction of the cerebellum and its associated pathways. These progressive ataxia disorders are inherited autosomal...
title: MRI of the Posterior Cranial Fossa: Spectrum of Abnormalities in Pediatric Patients.
Creators: name: Patil, Prafulla
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Pathology
subject: Neoplasia
subject: Inflammation
subject: Education
subject: MR-Spectroscopy
subject: MR-Diffusion/Perfusion
subject: MR
subject: Paediatric
subject: CNS

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The posterior cranial fossa is part of the intracranial cavity, located between the foramen magnum and tentorium cerebelli. Anteriorly, it extends to the apex of the petrous temporal bone and posteriorly, it is enclosed by the occipital bone. It...
title: Classical Signs and Appearances in Pediatric Neuroradiology
Creators: name: Egilmez, Hulusi
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: CNS
subject: Neuroradiology brain
subject: Paediatric
subject: CT
subject: MR
subject: Conventional radiography
subject: Imaging sequences
subject: Developmental disease

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: 1-To illustrate 28 classic signs and appearances in pediatric neuroradiology. 2-To discuss the causes for their appearances, and the differential...
title: The use of computed tomography to assess bone density in comparison to bone density assessment by DXA method
Creators: name: Dura , Marta
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Bones
subject: CT
subject: Diagnostic procedure
subject: Osteoporosis

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Osteoporosis is one of the most common diseases of civilization. It is estimated that about 50% of women and 20% of men will experience an osteoporotic fracture during their lives [1]. The number of patients with osteoporosis increases with the...
title: Correlation between the semiquantitative evaluations of susceptibility-weighted imaging and dynamic susceptibility-weighted contrast-enhanced perfusion-weighted magnetic resonance imaging in patients with astrocytic tumor
Creators: name: han, tong
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: CNS
subject: Neuroradiology brain
subject: MR-Diffusion/Perfusion
subject: Computer Applications-Detection, diagnosis
subject: Decision analysis
subject: Neoplasia

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To evaluate the correlations between the indexes of SWI and those of PI in astrocytic tumors before the...
Creative Uses for Repurposed Historic Textile Mills: A Case Study of Revolution Textile Mill, Greensboro N.C.
Creators: name: Schropp, Emma Kathleen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: While most scholars on the subject of North Carolina industrial history agree on the
reasons for its rise and subsequent devastating decline, they offer little insight to the future of the
mill buildings that remain as the industry’s physical legacy. Very few sources discuss viable uses
for rehabilitating these structures, largely leaving this field to be determined by a market study.
This paper explores the adaptive reuse approach of a former textile mill in Greensboro,
N.C. The goal is to analyze the approach taken to reactivate the Mill as a meaningful campus
within the larger context of the town, with specific regard to Greensboro’s textile history. The
case will also explore broader themes in the field of mill redevelopment, particularly the
successes and challenges of incorporating creative uses. This paper serves as one example of
how to successfully consider creative uses for redevelopment of large, historic structures, and
also identifies some of the major challenges to non-traditional approaches.
Ultimately, this case study is just one example of how alternative uses and redevelopment
can be approached. There are many other cases that, when approached differently, may prove to
be differently challenging and successful. This research draws upon first-hand research and
experience, multiple interviews with key participants and leaders of the process, as well as a
substantial literature consultation that places this case within a larger context of historic Mill
redevelopment in North Carolina.
title: Intracranial CT and MRI pseudolesions: a practical guide
Creators: name: Kunimatsu, Akira
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Education and training
subject: Technical aspects
subject: Education
subject: MR
subject: CT
subject: Neuroradiology brain
subject: CNS

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The purpose of this exhibit is: To understand intracranial pseudolesions caused by artifacts on CT or MR To understand intracranial diseases or conditions mimicking other more serious ones To become familiar with practical solutions to detect and...
title: Pulmonary Embolism on Computed Tomography Pulmonary Angiography (CTPA) : Audit of reporting of evidence of Right Heart Strain.
Creators: name: Hussain, Shahid
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Pulmonary vessels
subject: Cardiovascular system
subject: CT-Angiography
subject: Audit and standards
subject: Embolism / Thrombosis

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: INTRODUCTION Pulmonary embolism (PE) is an important medical concern in the National Health Service (NHS) in the United Kingdom (UK). The reported worldwide nnnual incidence of PE is in the region of 60-70 cases / 100000 1 . Furthermore, the...
Case Studies of Nonprofits Enabling the Historic Rehabilitation of Single Family Affordable Housing
Creators: name: Scheider, Caroline
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003

description: A great number of historic buildings, defined as those over 50 years of age, are located in low-income neighborhoods across the country. When only considering the 340,000 historic buildings that exist in historic districts that are eligible for historic tax credits, one finds that 200,000 of these buildings are in census tracts with a poverty rate of 20 percent or more (Andrews, 1999). Thus, if a nonprofit chooses to preserve historic buildings, it is important to understand how historic rehabilitation of low-income housing can be accomplished. Affordable housing is traditionally defined as housing that costs no more than thirty percent of the earnings of a low income person, one who earns 50 percent or less of the area median income. According to the National Register for Historic Places guidelines, a historic building is defined as a structure that is over fifty years of age and has one or more of four these characteristics: The building is associated with events that have made a significant contribution to the broad pattern of our history; The building is associated with lives of persons significant in our past; The structure embodies the distinctive characteristics of a type, period or method of construction; or The property has yielded or may yield information important to our history. Throughout the United States many businesses, individuals, governments, community development corporations and nonprofits have successfully combined historic preservation in creating affordable housing. These policies, programs and partnerships have been presented and discussed in many works concerning community revitalization.
Dynamic transition in Landau-Zener-Stückelberg interferometry of dissipative systems: the case of the flux qubit
Creators: name: Ferron, Alejandro
name: Dominguez, Daniel
name: Sanchez, Maria Jose
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study Landau-Zener-Stuckelberg (LZS) interferometry in multilevel systems coupled to an Ohmic quantum bath. We consider the case of superconducting flux qubits driven by a dc+ac magnetic fields, but our results can apply to other similar systems. We find a dynamic transition manifested by a symmetry change in the structure of the LZS interference pattern, plotted as a function of ac amplitude and dc detuning. The dynamic transition is from a LZS pattern with nearly symmetric multiphoton resonances to antisymmetric multiphoton resonances at long times (above the relaxation time). We also show that the presence of a resonant mode in the quantum bath can impede the dynamic transition when the resonant frequency is of the order of the qubit gap. Our results are obtained by a numerical calculation of the finite time and the asymptotic stationary population of the qubit states, using the Floquet-Markov approach to solve a realistic model of the flux qubit considering up to 10 energy levels.
description: One new figure added. Final version to be published in PRB
Levels of Consciousness Calibration of Assessment Tool Evaluations (LOCCATE)
Creators: name: Gill-Thwaites, Helen
name: Elliott, Karen
name: Morrissey, Ann-Marie
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Rehabilitation and Therapy
subject: clinical assessment
subject: consciousness
subject: disorders of consciousness
subject: EMCS
subject: MCS
subject: minimally conscious
subject: Neurobehavioural assessment
subject: unresponsive wakefulness syndrome
subject: vegetative state
subject: VS

description: A tool to identify the diagnostic spectrum profile of motor function and functional communication responses for the individual with a prolonged disorder of consciousness
Global Constraints on a Heavy Neutrino
Creators: name: de Gouvêa, André
name: Kobach, Andrew
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We estimate constraints on the existence of a heavy, mostly sterile neutrino with mass between 10 eV and 1 TeV. We improve upon previous analyses by performing a global combination and expanding the experimental inputs to simultaneously include tests for lepton universality, lepton-flavor-violating processes, electroweak precision data, dipole moments, and neutrinoless double beta decay. Assuming the heavy neutrino and its decay products are invisible to detection, we further include, in a self-consistent manner, constraints from direct kinematic searches, the kinematics of muon decay, cosmology, and neutrino oscillations, in order to estimate constraints on the values of $|U_{e4}|^2$, $|U_{\mu4}|^2$, and $|U_{\tau4}|^2$.
description: 19 pages, 13 figures, 3 tables. Typographical errors corrected, results and conclusions unchanged
title: Diagnosis of subarachnoid hemorrhage in the emergency department
Creators: name: Yamazaki, Ayako
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Outcomes
subject: Education and training
subject: Aneurysms
subject: Safety
subject: Diagnostic procedure
subject: Decision analysis
subject: MR
subject: CT
subject: Neuroradiology brain
subject: Emergency
subject: CNS

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Among all patients with headache who presented to emergency rooms (ERs), retrospective studies found that approximately 1 percent had subarachnoid hemorrhage (SAH) 1) . In most emergency ERs, the first screening image modality for SAH is...
Growth Management and the Private Sector: Strategies For Coordination: A Guide for Growing Communities
Creators: name: Combs, Tabitha
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: Providing safe drinking water facilities has long been recognized as a way to promote public health and welfare. In the past half-century, connections have also emerged between water provision and urban and suburban growth. Carefully planned provision of water and sewer infrastructure has become a popular, and by some accounts, the single most effective tool in managing this growth. This guide explains the use of water infrastructure in growth management, describes how the private sector has become a prominent force in providing water infrastructure, and examines the challenges to effective growth management imposed by private sector involvement. The guide also includes a toolbox of strategies growing North Carolina communities facing increasing private sector presence can use to retain land use planning and growth management power.