cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Atypical hemangioma and malignant lesions of spine: can diffusion weighted magnetic resonance imaging help to differentiate
Creators: name: Matrawy, Khaled
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Musculoskeletal spine
subject: Musculoskeletal soft tissue
subject: MR-Diffusion/Perfusion
subject: CT
subject: Computer Applications-Detection, diagnosis
subject: Metastases
subject: Haemangioma

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The aim of the work was directed to evaluate the value of diffusion weighted Magnetic Resonance Imaging in the diagnosis, characterization and differentiation of atypical hemangioma and malignant lesions of...
title: The value of Dyna CT in the hepatocellular carcinoma treated by transcatheter arterial chemoembolisation
Creators: name: wang, ye
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Interventional vascular
subject: Liver
subject: Anatomy
subject: Catheter arteriography
subject: Cone beam CT
subject: Image manipulation / Reconstruction
subject: Chemoembolisation
subject: Computer Applications-3D
subject: Computer Applications-Detection, diagnosis
subject: Cancer
subject: Embolism / Thrombosis
subject: Image guided radiotherapy

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Hepatocellular carcinoma (HCC) is one of the most common types of malignant liver tumor, and the third leading cause of cancer mortality worldwide [1] . It is responsible for more than 250,000 deaths worldwide each year [2,3] . Studies have...
Induced Gravity I: Real Scalar Field
Creators: name: Einhorn, Martin B
name: Jones, D R Timothy
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that classically scale invariant gravity coupled to a single scalar field can undergo dimensional transmutation and generate an effective Einstein-Hilbert action for gravity, coupled to a massive dilaton. The same theory has an ultraviolet fixed point for coupling constant ratios such that all couplings are asymptotically free. However the catchment basin of this fixed point does not include regions of coupling constant parameter space compatible with locally stable dimensional transmutation. In a companion paper we will explore whether this more desirable outcome does obtain in more complicated theories with non-Abelian gauge interactions.
description: 17 pages, 3 figures. v2, additional references; slight changes in wordng; no changes in results. v3, additional references
No Room In Paradise: Seeking Alternatives For A Brighter Future
Creators: name: Miller, Todd
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: Coastal regions of the nation have gained immense popularity over the last two decades. In the sixties, U.S. population grew twelve percent while the number of residents in the Atlantic and Gulf Coast states increased forty percent. The 1970 census reveals that more than half of the nation's population is within an hour's drive of the beach (Funk, 1977). This accessibility and increased leisure has escalated demand for waterfront property. North Carolina has also had growing demands placed on its coastal resources by recreational activities. Between 1958 and 1970, the tourist trade in coastal North Carolina increased by 168 percent (East Carolina, 1971). In 1970 the state ranked ninth in the United States in terms of the number of second homes (66,811) within its borders. By 1976, the coastal region alone had attracted an estimated 83,690 recreational properties (Burby, 1979). Tourism and second home development provide many benefits for coastal communities - increased tax revenues, recreational opportunities, jobs, and an improved market for marginal farmland. If not properly managed, however, such rapid development may eventually destroy the very qualities of the local environment that attracted visitors in the first place. Residents of Ocracoke Village, a coastal community in North Carolina, are currently facing this threat. Their experiences, which have been documented by several surveys and numerous interviews, provide valuable insights into some of the tough planning problems that leisure industries pose for coastal communities (Miller, 1977).
title: Correlation between Bone Minreal Densitometery and Liver/Heart iron overload evaluated by quantitative T2* MRI
Creators: name: Gifani, Mehrnoosh
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Haematologic diseases
subject: Demineralisation-Bone
subject: Technical aspects
subject: MR
subject: Absorptiometry / Bone densitometry
subject: Bones

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Osteomalacia and osteoporosis are a common clinical problem in patients with Beta thalassemia major. The purpose of this study is to assess the possible correlation of excess iron in liver and heart of patients with Beta thalassemia major with bone...
title: Gestational Diabetes Mellitus Prediction By The Use Of Nuchal Translucency Screening In High Risk Pregnancy
Creators: name: Elsherief, Ameer
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Foetus
subject: Normal variants
subject: Ultrasound
subject: Foetal imaging

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: OBJECTIVE:TO EVALUATE WHETHER INCREASED NUCHAL TRANSLUCENCY CAN PREDICT GESTATIONAL DIABETES...
Numerical universal solutions in $a$-gauge in open string field theory
Creators: name: Kishimoto, Isao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In bosonic open string field theory, we construct numerical universal solutions in $a$-gauge corresponding to ``double brane'' and ``ghost brane'' solutions in Siegel gauge in addition to the tachyon vacuum solution, and evaluate their gauge invariants, which are energy and gauge-invariant observable. The $a$-gauge condition, which contains a real parameter $a$, was introduced by Asano and Kato. In earlier works it has been applied to find the tachyon vacuum solution with the level truncation method up to level $14$. The ``double brane'' and ``ghost brane'' solutions were constructed by Kudrna and Schnabl in Siegel gauge, which corresponds to ($a=0$)-gauge, up to level $28$. Starting from these solutions, by varying $a$ little by little, we have constructed numerical solutions in $a$-gauge for various values of $a$ including $a=\infty$ up to level $20$. Contrary to naive expectation, the gauge invariants of ``double brane'' and ``ghost brane'' solutions in $a$-gauge seem to be non-constant for $a$. In particular, although the normalized energy $E$ of the ``double brane'' solution in $a$-gauge is approximately two for $a\sim 0$, we find that $E$ becomes almost one for $0.5
description: 28 pages, 16 figures; v2: a reference added
title: Tenosynovitis and intratendineous tophi in gout: an extremity-dedicated MRI study of the hand and wrist
Creators: name: Revelli, Matteo
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Musculoskeletal joint
subject: Musculoskeletal soft tissue
subject: MR
subject: Diagnostic procedure
subject: Arthritides

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Tenosynovitis, an inflammatory reaction within the tendon’s synovial sheath, is a common finding in rheumatoid and psoriatic arthritis. It can occur also in gout, and recently it has been demonstrated in association with dactylitis (1), but its...
Minimal $D=7$ Supergravity and the supersymmetry of Arnold-Beltrami Flux branes
Creators: name: Fre', P.
name: Grassi, P. A.
name: Ravera, L.
name: Trigiante, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we study some properties of the newly found Arnold-Beltrami flux-brane solutions to the minimal $D=7$ supergravity. To this end we first single out the appropriate Free Differential Algebra containing both a gauge $3$-form $\mathbf{B}^{[3]}$ and a gauge $2$-form $\mathbf{B}^{[2]}$: then we present the complete rheonomic parametrization of all the generalized curvatures. This allows us to identify two-brane configurations with Arnold-Beltrami fluxes in the transverse space with exact solutions of supergravity and to analyze the Killing spinor equation in their background. We find that there is no preserved supersymmetry if there are no additional translational Killing vectors. Guided by this principle we explicitly construct Arnold-Beltrami flux two-branes that preserve $0$, $1/8$ and $1/4$ of the original supersymmetry. Two-branes without fluxes are instead BPS states and preserve $1/2$ supersymmetry. For each two-brane solution we carefully study its discrete symmetry that is always given by some appropriate crystallographic group $Γ$. Such symmetry groups $Γ$ are transmitted to the $D=3$ gauge theories on the brane world--volume that occur in the gauge/gravity correspondence. Furthermore we illustrate the intriguing relation between gauge fluxes in two-brane solutions and hyperinstantons in $D=4$ topological sigma-models.
description: 56 pages, LaTeX source, 8 jpg figures, typos corrected
Book Review: Sidewalks: Conflict and Negotiation over Public Space
Creators: name: Holub, Krista
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Walking is regaining significance as a form of physical activity in this health-conscious nation, as a tenant of design in New Urbanist communities, and as a partial solution to environmental concerns caused by our society’s dependence on the automobile. This renewed interest in pedestrian activity underscores the importance of sidewalks, which are often taken for granted in the urban context. In their timely book Sidewalks: Conflict and Negotiation over Public Space, Anastasia Loukaitou- Sideris and Renia Ehrenfeucht examine the competing uses of and rights to urban sidewalks. The authors discuss how restrictive municipal regulations and ordinances have emptied sidewalks of the people that once made them vibrant public spaces. They encourage a more inclusive approach to regulating our public spaces in the future.
title: Specification of 99mTc-PYP nonosseous uptake with help of SPECT/CT.
Creators: name: Servuli, Ekaterina
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Abdomen
subject: Nuclear medicine
subject: Molecular imaging
subject: SPECT-CT
subject: SPECT
subject: CT
subject: Computer Applications-3D
subject: Computer Applications-Detection, diagnosis
subject: Calcifications / Calculi
subject: Metastases

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Whole body bone scintigraphy (bone scan) is a common study for diagnosis of bone pathology. In routine clinical practicehybrid imaging is not usually performed due to different reasons. Nevertheless SPECT/CT is a useful technic that gives more...
Amendment Smartphone breaks and fatigue IV
Creators: name: Dora, Jonas
name: van Hooff, Madelon
name: Bijleveld, Erik
name: Kompier, Michiel
name: Geurts, Sabine
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Decision-making
subject: Labor vs leisure
subject: Mental fatigue
subject: Motivation
subject: Opportunity costs

description: Prior to data collection, we noticed a small error in our analysis syntax. We hereby clarify our a priori analysis plan.
The frequency of accretion disks around single stars: Chamaeleon I
Creators: name: Daemgen, Sebastian
name: Meyer, R. Elliot
name: Jayawardhana, Ray
name: Petr-Gotzens, Monika G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: It is well known that stellar companions can influence the evolution of a protoplanetary disk. Nevertheless, previous disk surveys did not - and could not - consistently exclude binaries from their samples. We present a study dedicated to investigating the frequency of ongoing disk accretion around single stars in a star-forming region. We obtained near-infrared spectroscopy of 54 low-mass stars selected from a high-angular resolution survey in the 2-3 Myr-old Chamaeleon I region to determine the presence of Brackett-$γ$ emission, taking the residual chance of undetected multiplicity into account, which we estimate to be on the order of 30%. The result is compared with previous surveys of the same feature in binary stars of the same region to provide a robust estimate of the difference between the accretor fractions of single stars and individual components of binary systems. We find Br$γ$ emission among $39.5^{+14.0}_{-9.9}$% of single stars, which is a significantly higher fraction than for binary stars in Chamaeleon I. In particular, close binary systems with separations <100 AU show emission in only $6.5^{+16.5}_{-3.0}$% of the cases according to the same analysis. The emitter frequency of wider binaries appears consistent with the single star value. Interpreting Br$γ$ emission as a sign of ongoing accretion and correcting for sensitivity bias, we infer an accretor fraction of single stars of F_acc=$47.8^{+14.0}_{-9.9}$%. This is slightly higher but consistent with previous estimates that do not clearly exclude binaries from their samples. Through our robust and consistent analysis, we confirm that the fraction of young single stars harboring accretion disks is much larger than that of close binaries at the same age. Our findings have important implications for the timescales of disk evolution and planet formation.
description: 11 pages, 4 figures. Accepted for publication in A&A
title: Computed tomography and radiography in the diagnosis of necrotizing pneumonia
Creators: name: Sheykh, Zhanna
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Acute
subject: Imaging sequences
subject: CT-High Resolution
subject: Breast

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Diagnosis of necrotizingpneumonia is an actual problem of modern radiology. In recent decades, the world has witnessed an increased incidence of pneumonia among all age groups, and an increasing number of immunocompromised patients [1]. By frequency...
Review: Creative Economies, Creative Communities: Rethinking Place, Policy, and Practice
Creators: name: Vaughn, Brian
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The creative economy is studied by a variety of academic disciplines, and with their 2015 publication, English cultural geographers Saskia Warren and Phil Jones have taken an interdisciplinary approach, publishing work out of cultural and human geography, sociology, and public policy. The ten essays in Creative Economies, Creative Communities investigate who exactly benefits from public funding directed at growing the creative and cultural sectors.
Deep Person Generation: A Survey from the Perspective of Face, Pose and Cloth Synthesis
Creators: name: Sha, Tong
name: Zhang, Wei
name: Shen, Tong
name: Li, Zhoujun
name: Mei, Tao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep person generation has attracted extensive research attention due to its wide applications in virtual agents, video conferencing, online shopping and art/movie production. With the advancement of deep learning, visual appearances (face, pose, cloth) of a person image can be easily generated or manipulated on demand. In this survey, we first summarize the scope of person generation, and then systematically review recent progress and technical trends in deep person generation, covering three major tasks: talking-head generation (face), pose-guided person generation (pose) and garment-oriented person generation (cloth). More than two hundred papers are covered for a thorough overview, and the milestone works are highlighted to witness the major technical breakthrough. Based on these fundamental tasks, a number of applications are investigated, e.g., virtual fitting, digital human, generative data augmentation. We hope this survey could shed some light on the future prospects of deep person generation, and provide a helpful foundation for full applications towards digital human.
title: Sonographic measurement of the umbilical cord and its vessels and their relation with fetal anthropometric parameters
Creators: name: Rostamzadeh, Sheida
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Ultrasound
subject: Obstetrics (Pregnancy / birth / postnatal period)
subject: Foetal imaging
subject: Intrauterine diagnosis
subject: Obstetrics

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Umbilical cord is a vital structure of maternal-fetal life and can be used for evaluating pregnancy outcomes. In the past,sonographic investigations of the umbilical cord were limited to identification of the number of vessels and Doppler evaluation...
Asymptotically sharp discrete nonlinear Hausdorff-Young inequalities for the SU(1,1)-valued Fourier products
Creators: name: Kovač, Vjekoslav
name: Silva, Diogo Oliveira e
name: Rupčić, Jelena
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We work in a discrete model of the nonlinear Fourier transform (following the terminology of Tao and Thiele), which appears in the study of orthogonal polynomials on the unit circle. The corresponding nonlinear variant of the Hausdorff-Young inequality can be deduced by adapting the ideas of Christ and Kiselev to the present discrete setting. However, the behavior of sharp constants remains largely unresolved. In this short note we give two results on these constants, after restricting our attention to either sufficiently small sequences or to sequences that are far from being the extremizers of the linear Hausdorff-Young inequality.
description: 8 pages; v2: referee's suggestions incorporated
Book Review: Native to Nowhere: Sustaining Home and Community in a Global Age
Creators: name: Archer-Rosenthal, Dana
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: With nearly two decades’ experience writing on urban sustainability issues, Timothy Beatley has established himself as a preeminent proponent of local action as the determinant of true sustainability. Keeping with this theme, Native to Nowhere transforms eight years of fieldwork—and an enviable travel itinerary—into an exhaustive set of examples showing successful urban sustainability efforts from cities and towns throughout the United States, Canada and Europe.
Double-Trace Deformations and Entanglement Entropy in AdS
Creators: name: Miyagawa, Taiki
name: Shiba, Noburo
name: Takayanagi, Tadashi
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the bulk entanglement entropy of a massive scalar field in a Poincare AdS with the Dirichlet and Neumann boundary condition when we trace out a half space. Moreover, by taking into account the quantum back reaction to the minimal surface area, we calculate how much the entanglement entropy changes under a double-trace deformation of a holographic CFT. In the AdS3/CFT2 setup, our result agrees with the known result in 2d CFTs. In higher dimensions, our results offer holographic predictions.
description: 24 pages; v3, a comment and references added
title: Magnetic Resonance Imaging and Diffusion-Weighted Imaging in Categorization of Uterine Sarcoma: Correlation with Pathological Findings
Creators: name: Zhang, He
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Education and training
subject: Outcomes analysis
subject: MR
subject: Genital / Reproductive system female

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: We investigated the utility of magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI-MRI) in the categorization of uterine sarcoma (US) and compared them with pathological...
Non-relativistic solutions for three-body molecules within a Chern-Simons model
Creators: name: Caruso, Francisco
name: Oguri, Vitor
name: Silveira, Felipe
name: Troper, Amos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: The wave functions and the ground state energies for the bound states of four different muonic and electronic molecules, governed by the Chern-Simons potential in two spatial dimensions, are numerically obtained with the Numerov method. The new results are compared with former planar configuration studies that consider the attractive potential as being proportional to $\ln(ρ)$, as well as with the three-dimensional analogs assuming a Coulomb potential.
description: 16 pages, 2 figures
Implementing a Planning Process: A Problem in Organizational Design
Creators: name: Dill, David D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: In their now classic study of academic organizations in the early 1970s Cohen and March (1986) asked college and university presidents whether their college had a "plan." The responses tended to fall into four alternatives: (1) Yes, we have a plan. It is used in capital project and physical location decisions. (2) Yes, we have a plan. Here it is. It was made during the administration of our last president. We are working on a new one. (3) No, we do not have a plan. We should. We are working on one. (4) I think there's a plan around here someplace. Miss Jones, do we have a copy of our comprehensive 10- year plan? (p. 113) Cohen and March concluded that, if planning is understood as specification of objectives, identification of alternative routes to objectives, and choice among alternatives, then there was little evidence of comprehensive planning in higher education. Rather planning was understood as a symbolic activity, creating institutional advertisements to attract the support of private and public donors.
Triangulated categories of periodic complexes and orbit categories
Creators: name: Liu, Jian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 2020: 18G80 (primary), 16E45, 18E20, 18G35 (secondary)

description: We investigate the triangulated hull of the orbit categories of the perfect derived category and the bounded derived category of a ring concerning the power of the suspension functor. It turns out that the triangulated hull will correspond to the full subcategory of compact objects of certain triangulated categories of periodic complexes. This specializes to Stai and Zhao's result when the ring is a finite dimensional algebra with finite global dimension over a field. As the first application, if $A,B$ are flat algebras over a commutative ring and they are derived equivalent, then the corresponding derived categories of $n$-periodic complexes are triangle equivalent. As the second application, we get the periodic version of the Koszul duality.
description: 22 pages
title: Improvement of image quality with low radiation dose and low volume iodine contrast medium with a new iterative reconstruction technique in cerebral and carotid CTA studies
Creators: name: Zhang, Fan
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Cardiac
subject: CT-Angiography
subject: Diagnostic procedure

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To compare the image quality of cerebral and carotid multi-slice computed tomography angiography (CTA) with different reconstruction techniques (knowledge based iterative reconstruction, IMR, and iDose 4 Philips Healthcare) at 80 kVp with low volume...
Data and code for analysis and simulation done in the paper: 'Tableware trade in the Roman East: exploring cultural and economic transmission with agent-based modelling and approximate Bayesian computation'
Creators: name: Carrignon, Simon
name: Brughmans, Tom
name: Romanowska, Iza
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Classics
subject: Ancient History, Greek and Roman through Late Antiquity
subject: Anthropology
subject: FOS: Sociology
subject: Arts and Humanities
subject: Social and Behavioral Sciences

description: This project gather together all code and data used to simulate and analysis the models used in the paper : "Tableware trade in the Roman East: exploring cultural and economic transmission with agent-based modelling and approximate Bayesian computation"
title: Can RV-ROI detection bolus-tracking method reduce the contrast medium dose in 64-row MDCT angiography of the lower extremities?
Creators: name: Kitai, Takaaki
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Ischaemia / Infarction
subject: Blood
subject: Contrast agent-intravenous
subject: CT-Angiography
subject: Vascular
subject: Extremities

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The purpose of this study was to reduce contrast medium (CM) dose without the reduction of CT value in 64-row multi-detector computed tomography (MDCT) angiography of the lower extremities using right ventricle ROI detection bolus-tracking method...
Clique percolation method: memory efficient almost exact communities
Creators: name: Baudin, Alexis
name: Danisch, Maximilien
name: Kirgizov, Sergey
name: Magnien, Clémence
name: Ghanem, Marwan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Information Retrieval (cs.IR)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Automatic detection of relevant groups of nodes in large real-world graphs, i.e. community detection, has applications in many fields and has received a lot of attention in the last twenty years. The most popular method designed to find overlapping communities (where a node can belong to several communities) is perhaps the clique percolation method (CPM). This method formalizes the notion of community as a maximal union of $k$-cliques that can be reached from each other through a series of adjacent $k$-cliques, where two cliques are adjacent if and only if they overlap on $k-1$ nodes. Despite much effort CPM has not been scalable to large graphs for medium values of $k$. Recent work has shown that it is possible to efficiently list all $k$-cliques in very large real-world graphs for medium values of $k$. We build on top of this work and scale up CPM. In cases where this first algorithm faces memory limitations, we propose another algorithm, CPMZ, that provides a solution close to the exact one, using more time but less memory.
description: 15 pages, 5 figures, 1 table
title: Clinical application of MDCT with bolus contrast enhancement in the diagnosis of congenital heart disease
Creators: name: Blinova, Elena
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Cardiac
subject: Paediatric
subject: CT-Angiography
subject: Contrast agent-intravenous
subject: Congenital

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Technological advances and medical advances in surgical correction of congenital malformations of the cardiovascular system increase the demands on quality diagnostic tool, which corresponds to a high information content of the method in conjunction...
Book Review: Walkable City: How Downtown can Save America, One Step at a Time
Creators: name: Boivin, Ryan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: City planner, author, and TED Talk presenter Jeff Speck makes a compelling call for citizens and local officials to align their convictions and reflect on their built environment to focus on walkability. It is a motivating message justified by a thorough examination of design, social capital, health, and safety on the streets of America.
Asymptotically Optimal prepare-measure Quantum Key Distribution Protocol
Creators: name: Shu, Hao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum key distribution (QKD) could be the most significant application of quantum information theory. In nearly four decades, although substantial QKD protocols are developed, the BB84 protocol and its variants are still the most researched ones. It is well-known that the secure bound of qubit error rate (QBER) of BB84 protocol is about 11$\%$ while it can be increased to 12.6$\%$ by six-state protocol. It would not be surprising that employing more basis could increase the bound. However, what is the optimal protocol, and how to analyze it? In this paper, investigations of asymptotically optimal QKD protocols are proposed. Precisely, We present an abstraction of prepare-measure QKD protocols and investigate two special cases which are optimal among all protocols coding by the same states. Our analysis demonstrates that the asymptotically optimal QBER bounds coding by orthogonal qubits are about 27.28$\%$ for both memory C-NOT attacks and memoryless C-NOT attacks while the bounds coding by non-orthogonal states in two mutually unbiased bases are about 22.73$\%$ for memory and 28.69$\%$ for memoryless C-NOT attacks. The protocols are idealized but might be asymptotically realized while their optimality indicates the ultimate potential of QKD protocols. Although the analysis only contains a special kind of attack, it provides a framework for investigating such protocols.
description: 16 pages
title: F-18 fluorodeoxyglucose positron emission tomography for squamous cell carcinoma of the mandible and maxillar gingiva
Creators: name: Hayasaka, Kazumasa
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Head and neck
subject: PET-CT
subject: Diagnostic procedure
subject: Neoplasia

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: We aimed to determine whether or not FDG-PET imaging can diagnose and stage gingival squamous cell...
Cosmology with Superluminous Supernovae
Creators: name: Scovacricchi, Dario
name: Nichol, Robert C.
name: Bacon, David
name: Sullivan, Mark
name: Prajs, Szymon
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We predict cosmological constraints for forthcoming surveys using Superluminous Supernovae (SLSNe) as standardisable candles. Due to their high peak luminosity, these events can be observed to high redshift (z~3), opening up new possibilities to probe the Universe in the deceleration epoch. We describe our methodology for creating mock Hubble diagrams for the Dark Energy Survey (DES), the "Search Using DECam for Superluminous Supernovae" (SUDSS) and a sample of SLSNe possible from the Large Synoptic Survey Telescope (LSST), exploring a range of standardisation values for SLSNe. We include uncertainties due to gravitational lensing and marginalise over possible uncertainties in the magnitude scale of the observations (e.g. uncertain absolute peak magnitude, calibration errors). We find that the addition of only ~100 SLSNe from SUDSS to 3800 Type Ia Supernovae (SNe Ia) from DES can improve the constraints on w and Omega_m by at least 20% (assuming a flat wCDM universe). Moreover, the combination of DES SNe Ia and 10,000 LSST-like SLSNe can measure Omega_m and w to 2% and 4% respectively. The real power of SLSNe becomes evident when we consider possible temporal variations in w(a), giving possible uncertainties of only 2%, 5% and 14% on Omega_m, w_0 and w_a respectively, from the combination of DES SNe Ia, LSST-like SLSNe and Planck. These errors are competitive with predicted Euclid constraints, indicating a future role for SLSNe for probing the high redshift Universe.
description: Accepted by MNRAS. 9 pages, 4 figures
title: Potential interactions between radio contrast media and antibiotics and their effect on discography – an in vitro study
Creators: name: Langer, Ruth
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Contrast agents
subject: Neuroradiology spine
subject: Interventional non-vascular
subject: CT
subject: Experimental
subject: Myelography
subject: Infection

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Lindblom (1) described discography –an invasive diagnostic procedure- firstly in 1948. Iodine containing radio contrast medium (RCM) is injected into the nucleus pulposus of an intervertebral disc. Discography indications have significantly...
Recognizing Good Governance: A Field Experiment in Uganda
Creators: name: Buntaine, Mark
name: Daniels, Brigham
name: Bangerter, Tanner
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Political Science
subject: FOS: Political science
subject: Social and Behavioral Sciences
subject: corruption
subject: governance

description: We register this addendum pre-analysis plan for additional data collection and analysis as a follow-up to the already completed analysis as outlined in the updated pre-analysis plan (dated: June 6, 2020).
title: Cerebral venous drainage haemodynamics in multiple sclerosis and healthy control subjects: a comparative ultrasonographic study
Creators: name: Pourghorban, Ramin
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Haemodynamics / Flow dynamics
subject: Experimental investigations
subject: Comparative studies
subject: Ultrasound-Spectral Doppler
subject: Ultrasound-Colour Doppler
subject: Ultrasound
subject: Vascular
subject: Head and neck

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The purpose of this study was to evaluate brain venous drainage haemodynamics inpatients with multiple sclerosis using extracranial cervical...
Aesthetics and Zoning: No Longer Mutually Exclusive
Creators: name: Propst, Luther
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1983

description: On May 4, 1982, the North Carolina Supreme Court announced an opinion in the case of State v. Jones 305 N.C. 520, 290 S.E. 2d 675 (1982), that reversed its prohibition of land use regulations that are justified solely upon aesthetic considerations. In doing so, the Court brought the law in North Carolina into accord with the view held by a majority of states that have explicitly ruled on the question. This paper will address the questions about the scope of the police power to zone property or to otherwise regulate the use of land following the announced policy reversal of the Jones decision. It will not attempt to define "aesthetic." Instead, the paper will simply discuss the cases in which the court addressed the issue of aesthetics explicitly as a basis for the exercise of police power.
Ortho-to-para ratio of NH2. Herschel-HIFI observations of ortho- and para-NH2 rotational transitions towards W31C, W49N, W51 and G34.3+0.1
Creators: name: Persson, C. M.
name: Olofsson, A. O. H.
name: Gal, R. Le
name: Wirström, E. S.
name: Hassel, G. E.
name: Herbst, E.
name: Olberg, M.
name: Faure, A.
name: Hily-Blant, P.
name: Black, J. H.
name: Gerin, M.
name: Lis, D.
name: Wyrowski, F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have used the Herschel-HIFI instrument to observe both nuclear spin symmetries of amidogen (NH2) towards the high-mass star-forming regions W31C (G10.6-0.4), W49N (G43.2-0.1), W51 (G49.5-0.4) and G34.3+0.1. The aim is to investigate the ratio of nuclear spin types, the ortho-to-para ratio (OPR), of NH2. The excited NH2 transitions are used to construct radiative transfer models of the hot cores and surrounding envelopes in order to investigate the excitation and possible emission of the ground state rotational transitions of ortho-NH2 N_(K_a,K_c} J=1_(1,1) 3/2 - 0_(0,0) 1/2 and para-NH2 2_(1,2) 5/2 - 1_(0,1) 3/2$ used in the OPR calculations. Our best estimate of the average OPR in the envelopes lie above the high temperature limit of three for W49N, specifically 3.5 with formal errors of \pm0.1, but for W31C, W51, and G34.3+0.1 we find lower values of 2.5\pm0.1, 2.7\pm0.1, and 2.3\pm0.1, respectively. Such low values are strictly forbidden in thermodynamical equilibrium since the OPR is expected to increase above three at low temperatures. In the translucent interstellar gas towards W31C, where the excitation effects are low, we find similar values between 2.2\pm0.2 and 2.9\pm0.2. In contrast, we find an OPR of 3.4\pm0.1 in the dense and cold filament connected to W51, and also two lower limits of >4.2 and >5.0 in two other translucent gas components towards W31C and W49N. At low temperatures (T \lesssim 50 K) the OPR of H2 is <10^-1, far lower than the terrestrial laboratory normal value of three. In such a "para-enriched H2" gas, our astrochemical models can reproduce the variations of the observed OPR, both below and above the thermodynamical equilibrium value, by considering nuclear-spin gas-phase chemistry. The models suggest that values below three arise in regions with temperatures >20-25 K, depending on time, and values above three at lower temperatures.
description: 21 pages, 23 figures. Accepted by Astronomy and Astrophysics 30 Nov 2015
Non-Linear Hall Effect in Multi-Weyl Semimetals
Creators: name: Roy, Saswata
name: Narayan, Awadhesh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the presence of time reversal symmetry, a non-linear Hall effect can occur in systems without an inversion symmetry. One of the prominent candidates for detection of such Hall signals are Weyl semimetals. In this article, we investigate the Berry curvature induced second and third order Hall effect in multi-Weyl semimetals with topological charges $n =1, 2, 3$. We use low energy effective models to obtain general analytical expressions and discover the presence of a large Berry curvature dipole in multi-Weyl semimetals. We also study the Berry curvature dipole in a realistic tight-binding lattice model and observe two different kinds of variation with increasing topological charge -- these can be attributed to different underlying Berry curvature components. We provide estimates of the signatures of second harmonic of Hall signal in multi-Weyl semimetals, which can be detected experimentally. Furthermore, we predict the existence of a third order Hall signal in multi-Weyl semimetals. We derive the analytical expressions of Berry connection polarizability tensor, which is responsible for third order effects, using a low energy model and estimate the measurable conductivity. Our work can help guide experimental discovery of Berry curvature multipole physics in multi-Weyl semimetals.
description: Published version
Housing for Neighbors: New Opportunities in Durham
Creators: name: Freedman, Daniel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1984

description: In Durham, North Carolina's Old North Durham neighborhood, residents have begun to experiment with a "sweat-equity" form of low-cost housing development. Durham administrators have replaced the term "sweat-equity" with the less descriptive title: "owner-builder". For all practical purposes, the administrative process and housing goals of these self-help programs are equal. The Durham owner-builder program attempts to provide incentives and some direct assistance for rehabilitation of the community's deteriorating housing stock. Under the proposed program guidelines, owner-builders will develop eight new townhouses and rehabilitate an historic apartment building into condominiums. The rehabilitation project will be the first such Neighborhood Housing Services (NHS) project in the United States. The program's primary service will be to reduce or eliminate down-payments for rehabilitation projects. Homeownership opportunities will be provided for households otherwise excluded from conventional housing finance markets. A secondary goal of the NHS is an improved state of security and stability within the neighborhood as a consequence of the owner-builders' direct attention to property improvement. In the following analysis, objectives of an NHS and the relationship between an NHS and an owner-builder program will be described.
title: Imaging of low back pain in older people. An audit of current practice.
Creators: name: Culleton, Sinead
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Outcomes
subject: Osteoporosis
subject: Diagnostic procedure
subject: Conventional radiography
subject: Musculoskeletal spine

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Low back pain (LBP) is one of the most disabling and therapeutically challenging pain conditions afflicting older adults. It is among the most common and potentially disabling chronic pain conditions [1]. While the epidemiology of back pain in...
Existence of positive solutions for an approximation of stationary mean-field games
Creators: name: Almayouf, Nojood
name: Bachini, Elena
name: Chapouto, Andreia
name: Ferreira, Rita
name: Gomes, Diogo
name: Jordão, Daniela
name: Junior, David Evangelista
name: Karagulyan, Avetik
name: Monasterio, Juan
name: Nurbekyan, Levon
name: Pagliar, Giorgia
name: Piccirilli, Marco
name: Pratapsi, Sagar
name: Prazeres, Mariana
name: Reis, João
name: Rodrigues, André
name: Romero, Orlando
name: Sargsyan, Maria
name: Seneci, Tommaso
name: Song, Chuliang
name: Terai, Kengo
name: Tomisaki, Ryota
name: Velasco-Perez, Hector
name: Voskanyan, Vardan
name: Yang, Xianjin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Here, we consider a regularized mean-field game model that features a low-order regularization. We prove the existence of solutions with positive density. To do so, we combine a priori estimates with the continuation method. In contrast with high-order regularizations, the low-order regularizations are easier to implement numerically. Moreover, our methods give a theoretical foundation for this approach.
description: 15 pages
Design Considerations of Biaxially Tensile-Strained Germanium-on-Silicon Lasers
Creators: name: Li, Xiyue
name: Li, Zhiqiang
name: Li, Simon
name: Chrostowski, Lukas
name: Xia, Guangrui
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Physical models of Ge energy band structure and material loss were implemented in LASTIP(TM), a 2D simulation tool for edge emitting laser diodes. The model calculation is able to match experimental data available. Important design parameters of a Fabry-Perot Ge laser, such as the cavity length, thickness, width, polycrystalline Si cladding layer thickness were studied and optimized. The laser structure optimizations alone were shown to reduce Ith by 22-fold and increase the differential efficiency by 11 times. The simulations also showed that improving the defect limited carrier lifetime is critical for achieving an efficient and low-threshold Ge laser. With the optimized structure design (300 micron for the cavity length, 0.4 micron for the cavity width, 0.3 micron for the cavity thickness, and 0.6 micron for the polycrystalline Si cladding layer thickness) and a defect limited carrier lifetime of 100 ns, a wall-plug efficiency of 14.6% at 1mW output is predicted, where Jth of 2.8 kA/cm2, Ith of 3.3 mA, I_1mA of 9 mA, and differential efficiency of 23.6% can also be achieved. These are tremendous improvements from the available experimental values at 280 kA/cm2, 756 mA, 837 mA and 1.9%, respectively.
description: 12 pages, 9 figures
Comment on "Evidence for narrow resonant structures at $W\approx$ 1.68 GeV and $W\approx$ 1.72 GeV in real Compton scattering off the proton"
Creators: name: Werthmüller, D.
name: Witthauer, L.
name: Glazier, D. I.
name: Krusche, B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We comment on the statement by Kuznetsov et al. that the structure around W=1.72 GeV seen in the beam asymmetry in Compton scattering off the proton is not observed in the total cross section of $η$ photoproduction on the neutron.
description: 2 pages, 1 figure; corrected typos, reference, PACS numbers
Branched covers and matrix factorizations
Creators: name: Leuschke, Graham J.
name: Tribone, Tim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Commutative Algebra (math.AC)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 13H10, 13C14

description: Let $(S,\mathfrak n)$ be a regular local ring and $f$ a non-zero element of $\mathfrak n^2$. A theorem due to Knörrer states that there are finitely many isomorphism classes of maximal Cohen-Macaulay $R=S/(f)$-modules if and only if the same is true for the double branched cover of $R$, that is, the hypersurface ring defined by $f+z^2$ in $S[[ z ]]$. We consider an analogue of this statement in the case of the hypersurface ring defined instead by $f+z^d$ for $d\ge 2$. In particular, we show that this hypersurface, which we refer to as the $d$-fold branched cover of $R$, has finite Cohen-Macaulay representation type if and only if, up to isomorphism, there are only finitely many indecomposable matrix factorizations of $f$ with $d$ factors. As a result, we give a complete list of polynomials $f$ with this property in characteristic zero. Furthermore, we show that reduced $d$-fold matrix factorizations of $f$ correspond to Ulrich modules over the $d$-fold branched cover of $R$.
description: 17 pages, comments welcome. v2: correction to a mistake in Example 3.6 as well as other minor changes