cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum symmetry groups of C*-algebras equipped with orthogonal filtrations
Creators: name: Banica, Teodor
name: Skalski, Adam
Publisher: name: arXiv
Year: 2011
Subjects: subject: Operator Algebras (math.OA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 46L65 (Primary) 16W30, 46L54 (Secondary)

description: Motivated by the work of Goswami on quantum isometry groups of noncommutative manifolds we define the quantum symmetry group of a unital C*-algebra A equipped with an orthogonal filtration as the universal object in the category of compact quantum groups acting on A in a filtration preserving fashion. The existence of such a universal object is proved and several examples discussed. In particular we study the universal quantum group acting on the dual of the free group and preserving both the word length and the block length.
description: 31 pages, v2 corrects a few minor points and updates the list of references. The final version of the paper will appear in the Proceedings of the London Mathematical Society
title: Recurrent Pyogenic Cholangitis: an unusual but increasingly entity in Western Countries.
Creators: name: Martinez, Nicolas
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Infection
subject: Abscess
subject: Stents
subject: Drainage
subject: Dilation
subject: Ultrasound
subject: MR-Cholangiography
subject: CT
subject: Interventional non-vascular
subject: Biliary Tract / Gallbladder
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Define recurrent pyogenic cholangitis and its epidemiology. Review the main clinical features and differential diagnosis of recurrent pyogenic cholangitis. Discussthe imaging findings by CT and MRI including initial presentation and complications....
title: Inflation im Euroraum: Faktoren wirken meist nur temporär, aber Risiko für länger erhöhte Inflation vorhanden
Creators: name: Bernoth, Kerstin
name: Ider, Gökhan
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: E31 Price Level; Inflation; Deflation
subject: E52 Monetary Policy
subject: E58 Central Banks and Their Policies
subject: Inflation
subject: inflation expectations
subject: monetary policy

description: Die Gesamtinflation im Euroraum ist im Sommer sprunghaft auf mehr als drei Prozent gestiegen – nach Jahren mit relativ geringen Teuerungsraten von deutlich unter der von der EZB bis Juli 2021 angestrebten Zielmarke von knapp unter zwei Prozent. Ein Hauptgrund für die anziehende Inflation sind zum einen die seit Jahresbeginn steigenden Energiepreise. Aber es gibt noch weitere Anhaltspunkte, die darauf hindeuten, dass die Inflation im Euroraum auch in den kommenden Monaten erhöht bleiben wird. Der vorliegende Bericht analysiert die Faktoren, die einen Einfluss auf die Inflation haben könnten. Die meisten dieser Faktoren – wie die Produktionslücke oder die Konsumneigung – haben jedoch nur eine vorübergehende Wirkung. Andere, wie die Arbeitslosenlücke, wiegen bei genauerer Analyse weniger schwer als erwartet. Ein Hauptrisiko für eine anhaltend hohe Inflation ist eine Veränderung der Inflationserwartungen, die eine Lohn-Preis-Spirale auslösen könnten. Noch sind diese Erwartungen im Einklang mit dem Inflationsziel der EZB. Die europäische Notenbank sollte deren Entwicklung kritisch beobachten und gegebenenfalls entschlossen gegensteuern, um ihre Glaubwürdigkeit zu wahren.
description: DIW Wochenbericht, 88 (2021), 42, S. 695-704
title: Diagnostic efficiency of 128-row multidetector computed tomography in the diagnosis of vessel involvement in patients with hilar cholangiocarcinoma
Creators: name: Lesko, Konstantin
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cancer
subject: Contrast agent-intravenous
subject: CT-Angiography
subject: CT
subject: Biliary Tract / Gallbladder
subject: Abdomen

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Hilar cholangiocarcinoma (HCCA) or Klatskin tumor is a rare malignancy, arising in the confluence of the extrahepatic bile ducts in liver hilus [1]. The prognosis is rather poor due to the tendency toward presentation at an advanced stage, but...
General Nonextremal Rotating Charged AdS Black Holes in Five-dimensional $U(1)^3$ Gauged Supergravity: A Simple Construction Method
Creators: name: Wu, Shuang-Qing
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: With the help of a generalized form of the metric ansatz found for the single-charge case in a previous work [S.Q. Wu, Phys. Rev. D 83, 121502(R) (2011)], I adopt a simple algorithm to construct the most general nonextremal rotating charged black hole solutions in five-dimensional $U(1)^3$ gauged supergravity. The general solution that is interesting for testing the AdS$_5$/CFT$_4$ correspondence in M-theory, is characterized by its mass, two unequal rotation parameters, three different U(1) charges, and a negative cosmological constant. The metric ansatz is very universal and illuminative, it is not only especially suitable for constructing solutions with multiple different electric charges in (un)gauged supergravities, but also for other dilatonic gravity theory.
description: 17 pages, revised version with typos removed, and Ref.[22] updated
title: Alzheimer`s disease in our center: radiological study with Magnetic Resonance image in 20 patients
Creators: name: Miras Ventura, José Antonio
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neuroradiology brain
subject: MR
subject: Diagnostic procedure
subject: Dementia

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To describe the radiological findings found in patients with Alzheimer's dementia studied by magnetic resonance imaging (MRI) in our...
title: Snow Is Not Always Necessary For Sledge Runner: A Diffusion Tensor Tractography Study Of The Sledge Runner Fasciculus
Creators: name: Karavasilis, Efstratios
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: MR-Diffusion/Perfusion
subject: Neuroradiology brain
subject: Computer Applications-Detection, diagnosis
subject: Tissue characterisation

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Diffusion tensor imaging (DTI) has led to a more profound understanding of structural brain connectivity, enabling the in-vivo identification of well-known white matter (WM) pathways (1-3). It remains challenging to reconstruct anatomically complex...
THE MEDIATING IMPACT OF ARTIFICIAL INTELLIGENCE IN THE RELATIONSHIP BETWEEN DECISION-MAKING AND CRISIS MANAGEMENT IN PRIVATE BANKS IN YEMEN
Creators: name: ABDOLKAREEM K. ALSYAGHI
name: AKRAM M. ALARSHANI
Publisher: name: Zenodo
Year: 2023
Subjects: Artificial Intelligence, Decision Making, Crisis Management, Yemen.

description: Abstract
This article aimed to identify the mediating impact of artificial intelligence (User- Systems- Devices) in the relationship between decision-making (Quality- Effectiveness- Acceptance) and crisis management (Signal detection- Preparation/prevention- Containment/Damage limitation- Recovery- Learning) in private banks in Yemen. To achieve the objectives of the article, a quantitative approach was employed, utilizing both descriptive and analytical methods.  The study population consisted of leaders from private banks in Yemen, specifically those in their main branches in the capital, Sana'a, holding the following administrative positions: General Manager, Assistant General Manager, Sector Manager, and Department Manager.  Due to the small size of the study community, the comprehensive survey method was employed, and questionnaires served as the primary tool for data collection. A total of 239 questionnaires were distributed, and 219 valid questionnaires (92% response rate) were collected for analysis. Data were analyzed using appropriate statistical methods within the SPSS v26 software, and structural equation modeling (SEM) was applied using Amos v26. The article concluded the quantitative model achieved a Goodness of Fit Indices (very good) demonstrating the indirect relationship between decision making and crisis management mediated partially by artificial intelligence. The article presented a number of recommendations including the following: Paying attention to decision-making by considering its dimensions (Quality- Effectiveness- Acceptance), with particular emphasis on the quality of decision. Furthermore, giving importance to artificial intelligence due to its significant role in shaping the future and its potential impact on the development and advancement of banks. This is crucial considering the influence of artificial intelligence on all administrative operations and functions, especially given the diverse and numerous crises faced by banks in the unstable Yemeni environment.
A new seismicity catalogue of the eastern Alps using the temporary Swath-D network
Creators: name: Hofman, Laurens Jan
name: Kummerow, Jörn
name: Cesca, Simone
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: seismicity catalog
subject: eastern Alps
subject: Swath-D network
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: We present a new, consistently processed seismicity catalogue for the eastern and southern Alps based on the temporary dense Swath-D monitoring network. The final catalogue contains 6053 earthquakes for the time period 2017–2019 and has a magnitude of completeness of −1.0 ML. The smallest detected and located events have a magnitude of −1.7 ML. Aimed at the low to moderate seismicity in the study region, we have developed a multi-stage, mostly automatic workflow that combines a priori information from local catalogues and waveform-based event detection, subsequent efficient GPU-based (GPU: graphics processing unit) event search by template matching, P and S arrival time pick refinement, and location in a regional 3-D velocity model. The resulting seismicity distribution generally confirms the previously identified main seismically active domains but provides increased resolution of the fault activity at depth. In particular, the high number of small events additionally detected by the template search contributes to a denser catalogue and provides an important basis for future geological and tectonic studies in this complex part of the Alpine orogen.
Asymptotics of Harish-Chandra expansions, bounded hypergeometric functions associated with root systems, and applications
Creators: name: Narayanan, E. K.
name: Pasquale, A.
name: Pusti, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Representation Theory (math.RT)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33C67 (Primary) 43A32, 43A90 (Secondary)

description: A series expansion for Heckman-Opdam hypergeometric functions $φ_λ$ is obtained for all $λ\in \mathfrak a^*_{\mathbb C}.$ As a consequence, estimates for $φ_λ$ away from the walls of a Weyl chamber are established. We also characterize the bounded hypergeometric functions and thus prove an analogue of the celebrated theorem of Helgason and Johnson on the bounded spherical functions on a Riemannian symmetric space of the noncompact type. The $L^p$-theory for the hypergeometric Fourier transform is developed for $0
title: Pictorial review of Cystic Lung Disease
Creators: name: Hussain, Shahid
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Thorax
subject: CT-High Resolution
subject: eLearning
subject: Cysts

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To present a pictorial review of cystic lung disease cases encountered in our institution, which is a tertiary referral centre for interstitial lung disease in the West Midlands. Present common diagnostic features to help differentiate between...
title: Our structured reporting platform targeting in consistency of CT approach in pre-Transcatheter aortic valve implantation
Creators: name: Paraskevopoulou, Anna
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Calcifications / Calculi
subject: Structured reporting
subject: Computer Applications-3D
subject: CT-Angiography
subject: Cardiovascular system
subject: Arteries / Aorta

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Transcatheter aortic valve implantation (TAVI) provides an alternative treatment option for inoperable and high surgical risk patients with symptomatic severe aortic stenosis [1]. Pre-TAVI MDCT is an essential tool for the cardiologist and requires...
Supplementary Simulation Data for Insights into the Importance of WPD-Loop Sequence for Activity and Structure in Protein Tyrosine Phosphatases
Creators: name: Shen, Ruidan
name: Crean, Rory M.
name: Olsen, Keith J.
name: Richan, Teisha
name: Brandão, Tiago A. S.
name: Berry, Ryan D.
name: Tolman, A.
name: Loria, J. Patrick
name: Johnson, Sean J.
name: Kamerlin, Shina Caroline Lynn
name: Hengge, Alvan C.
Publisher: name: Zenodo
Year: 2021
Subjects: Protein Tyrosine Phosphatases
PTP1B
YopH
Conformational Plasticitiy
Loop Dynamics
Molecular Dynamics
Molecular Simulation Data

description: Additional simulation data for "Insights into the Importance of WPD-Loop Sequence for Activity and Structure in Protein Tyrosine Phosphatases", which has been submitted as a preprint to ChemRxiv.
title: MRI in head and neck disease: evaluation of the performance of a simultaneous multi-slice acquisition and a special surface coil
Creators: name: Su, Tong
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Efficacy studies
subject: MR-Diffusion/Perfusion
subject: MR
subject: Lymph nodes
subject: Head and neck
subject: Technology assessment
subject: Cancer
subject: Multidisciplinary cancer care

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Magnetic resonance imaging (MRI) in the head and neck region is challenging due to the intricate anatomic structures in this area and its high susceptibility to motion artifacts[1].Rapid Acquisition with Refocusing Echoes (RARE)[2], also known as...
Determination of $α_s(M_τ^2)$ from Improved Fixed Order Perturbation Theory
Creators: name: Abbas, Gauhar
name: Ananthanarayan, B.
name: Caprini, Irinel
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We revisit the extraction of $α_s(M_τ^2)$ from the QCDperturbative corrections to the hadronic $τ$ branching ratio, using an improved fixed-order perturbation theory based on the explicit summation of all renormalization-group accessible logarithms, proposed some time ago in the literature. In this approach, the powers of the coupling in the expansion of the QCD Adler function are multiplied by a set of functions $D_n$, which depend themselves on the coupling and can be written in a closed form by iteratively solving a sequence of differential equations. We find that the new expansion has an improved behavior in the complex energy plane compared to that of the standard fixed-order perturbation theory (FOPT), and is similar but not identical to the contour-improved perturbation theory (CIPT). With five terms in the perturbative expansion we obtain in the ${\bar{\rm MS}}$ scheme $ α_s(M_τ^2)= 0.338 \pm 0.010$, using as input a precise value for the perturbative contribution to the hadronic width of the $τ$ lepton reported recently in the literature.
description: 12 pages, 6 figures, uses revtex; replaced with version corresponding to published version in Physical Review
title: Emissionsminderungen allein sagen kurzfristig nicht viel über Klimaschutz aus: Interview
Creators: name: Neuhoff, Karsten
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021

description: DIW Wochenbericht, 88 (2021), 41, S. 688
Governance Deadlock and Economic Crisis in Iran
Creators: name: Azadi, Pooya
Publisher: name: Stanford Digital Repository
Year: 2021
Subjects: subject: Iran
subject: Economic Crisis
subject: Governance

description: Iran is currently undergoing its deepest economic, governance, health, environmental, and social crises since the inception of the Islamic Republic in 1979. After more than four decades of the regime’s rule, over half of the country’s 85 million people live in poverty, net capital formation—which has undergone a secular decline for two decades—is now in negative territory, groundwater resources have been largely depleted (which in turn increases the risk of hunger and internal conflicts among different regions), the massive wealth embedded in hydrocarbon and mineral resources has been exhausted without being replaced by enduring financial or physical assets, two-thirds of the working age population are unemployed or are out of the workforce, about half of the population window of opportunities has passed with no savings made to support the largest cohorts of population that will reach retirement in the coming decades, political and administrative corruption is among the highest in the world, and the massive flux of brain drain and capital flight is depriving the country of the elements sine qua non  for future growth. This paper provides a brief overview of Iran's current economic crisis and explains its link with the Islamic Republic's dysfunctional institutions and political decay.
title: Second Shot Arterial Phase To Overcome Degraded Hepatic Arterial Phase in Liver MR Imaging
Creators: name: Park, Yang Shin
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Abdomen
subject: Liver
subject: MR
subject: Contrast agent-intravenous
subject: Artifacts

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Gadoxetic acid is widely used for liver imaging due to its additional value of hepatobiliary phase (HBP) imaging [1-3]. However, arterial phase (AP) images are crucial to the diagnosis of hepatocellular carcinoma (HCC) in at-risk patients, because...
title: Color Doppler ultrasound in the Evaluation of Arterio-Venous Fistulas.
Creators: name: Leal, Grettel
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Vascular
subject: Ultrasound physics
subject: Eyes
subject: Ultrasound-Colour Doppler
subject: Ultrasound
subject: Efficacy studies
subject: Venous access
subject: Fistula
subject: Infection

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - Identify in the preoperative the adequate arterial and venous vessels that allow to obtain a vascular access with high success rate. - Recognize the functional criteria of arteriovenous fistulas, as well as failure criteria. - Identify the...
title: Ein wirksames Klimaschutzgesetz braucht Frühindikatoren
Creators: name: Fietze, Daniela
name: Kröger, Mats
name: Müller, Thorsten
name: Neuhoff, Karsten
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: H11 Structure, Scope, and Performance of Government
subject: K32 Environmental, Health, and Safety Law
subject: L51 Economics of Regulation
subject: Intermediary Indicators
subject: Climate Policy
subject: Climate Neutrality
subject: Policy Monitoring
subject: Climate Governance

description: Der Beschluss des Bundesverfassungsgerichts zum Klimaschutzgesetz sowie die Verpflichtung zum Erreichen von Klimaneutralität stellen neue Anforderungen an die Politik. Die Weichen für eine klimaneutrale Gesellschaft müssen jetzt gestellt werden. Die derzeit im Klimaschutzgesetz vorgesehenen Monitoringinstrumente sind jedoch nicht ausreichend, um zu erkennen, ob die Politikinstrumente und Programme die intendierte Wirkung entfalten. Denn Treibhausgasreduktionen auf Sektorebene, die aktuell die alleinige Zielgröße darstellen, sind mit Unsicherheiten behaftet. Zudem erlauben sie es erst mit Verzögerung Fortschritte zu erkennen, und sie bilden die den konkreten Emissionsminderungen vorgelagerten transformativen Maßnahmen nur unzureichend ab. Um diese Defizite auszuräumen, sollte das Klimaschutzgesetz durch Frühindikatoren ergänzt werden. Auf diese Weise könnte durch eine verbreiterte Informationsgrundlage eine bessere Umsetzung von Energie- und Klimapolitikmaßnahmen ermöglicht werden.
description: DIW Wochenbericht, 88 (2021), 41, S. 679-687
Universal Features of the Excitation Spectrum in Generalized Gibbs Distribution Ensemble
Creators: name: Demler, E.
name: Tsvelik, A. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that excitation spectra of Generalized Gibbs Ensembles (GGE) of one-dimensional integrable models with isotopic symmetry contain universal features insensitive to details of the distribution. Namely, the low energy limit of the subsystem of isotopic (for instance, spin) excitations is described by the effective action of a ferromagnet at thermodynamic equilibrium with a single temperature and with the stiffness determined by the initial conditions. The condition of universality is that the entropy per excited particle is small.
description: 9 pages, 2 figures; revised version
Reciprocity Laws on Algebraic Surfaces via Iterated Integrals
Creators: name: Horozov, Ivan
name: Kerr, Matt
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J29, 14C30, 32J25, 55P35

description: This paper presents a proof of reciprocity laws for the Parshin symbol and for two new local symbols, defined here, which we call 4-function local symbols. The reciprocity laws for the Parshin symbol are proven using a new method - via iterated integrals. The usefulness of this method is shown by two facts - first, by establishing new local symbols - the 4-function local symbols and their reciprocity laws and, second, by providing refinements of the Parshin symbol in terms of bi-local symbols, each of which satisfies a reciprocity law. The K-theoretic variant of the first 4-function local symbol is defined in the Appendix. It differs by a sign from the one defined via iterated integrals. Both the sign and the K-theoretic variant of the 4-function local symbol satisfy reciprocity laws.
description: A second 4-fucntion local symbol is introduced. The approach via iterated integrals is structured better. We use more Milnor K-groups. 30 pages
Explicit Teichmüller curves with complemetary series
Creators: name: Matheus, Carlos
name: Weitze-Schmithüsen, Gabriela
Publisher: name: arXiv
Year: 2011
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We construct an explicit family of arithmetic Teichmüller curves $\mathcal{C}_{2k}$, $k\in\mathbb{N}$, supporting $\textrm{SL}(2,\mathbb{R})$-invariant probabilities $μ_{2k}$ such that the associated $\textrm{SL}(2,\mathbb{R})$-representation on $L^2(\mathcal{C}_{2k}, μ_{2k})$ has complementary series for every $k\geq 3$. Actually, the size of the spectral gap along this family goes to zero. In particular, the Teichmüller geodesic flow restricted to these explicit arithmetic Teichmüller curves $\mathcal{C}_{2k}$ has arbitrarily slow rate of exponential mixing.
description: 46 pages, 10 figures. Final version (based on the referee report). To appear in Bulletin SMF
Flowshape : 3d concept modeling from single-view design sketches
Creators: name: Xu, Baoxuan
Publisher: name: University of British Columbia
Year: 2013

description: This work presents an automatic creation of 3D models from single view design sketches. We observe that these sketches typically employ networks of trim curves and cross-sections to convey shape. Combined together these curves define the representative flow-lines of the model, reflecting principal curvature and feature lines across the target surface. Artists design these lines to serve as a visual proxy of the 3D object and to effectively convey all surface details. Cross-sections, in particular, are known to impose a set of geometric constraints on the imagined surface, that help position the surface in 3D. We formulate the problem of reconstructing believ- able 3D curve geometry from design sketches via an optimization framework that leverages the geometric properties of flow-line networks, the constraints imposed by cross-section curves, and observations on how people perceive and sketch such networks. This algorithm utilizes these criteria to simultaneously construct the 3D curves and correct for inevitable inaccuracies in free-hand sketches, which if retained would hinder constraint satisfaction and may lead to noticeable artifacts in the reconstructed 3D models. We validate our framework by producing believable 3D curve networks and surfaces from design sketches based on cross-section and trim curves, conducting a qualitative comparison to artist-estimated models, and visual validation by designers.
Working For Each Other: Culture Discussing Itself in Contemporary South Korean Webtoons and Dramas
Creators: name: Chan, Keesilla
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: South Korea
culture studies
media
media studies

description: In the growing recognition of South Korean culture, their values and their own share of societal debate and criticism take place somewhere for all the world to see: their media products. This paper uses three case studies of webtoon (a web-friendly comic)-turned-TV drama to showcase examples of culture discussion and change particularly in collectivism effects on the individual, feminism, and consumed media.
title: Recognizing Common and Uncommon Surgical complications in Gynecologyc and Obstetrics routine procedures A daily Quest for the Radiologist
Creators: name: Maldonado Schoijet, Ignacio
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Diagnostic procedure
subject: Complications
subject: Ultrasound
subject: MR
subject: CT
subject: Genital / Reproductive system female
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: This educational exhibit aims to review the common and uncommon surgical complications in Gynecologic and Obstetrics (GOB) routine...
shamseddin.pdf
Creators: name: Alshorman, Shams Eddin
Publisher: name: figshare
Year: 2021
Subjects: subject: 10107 Mathematical Logic, Set Theory, Lattices and Universal Algebra
subject: FOS: Mathematics

description: We introduce the class of CC-groups as groups in which every commutator element is central. In this paper, we study some algebraic properties of the class of CC-groups. In particular, we prove that the class of CC-groups is closed for subgroups, homomorphic images, and for direct products. Moreover, we determine the CC-groups among some classical groups.
title: Soziale Entmischung in der Grundschule – wie die Wahl der Eltern Segregation verstärkt
Creators: name: Ramos Lobato, Isabel
name: ILS – Research Institute for Regional and Urban Development
Publisher: name: ILS ¬ Institut für Landes- und Stadtentwicklungsforschung
Year: 2023
Subjects: classificationCode: 5.7
subject: FOS: Social and economic geography

description: In vielen Städten zeigt sich: Kinder mit unterschiedlichem sozio-ökonomischem oder ethnisch-kulturellem Hintergrund sind in Schulen oft stärker voneinander getrennt als in ihren Wohnvierteln. Die Schulwahl der Eltern spielt dabei eine zentrale Rolle, denn selbst wenn privilegiertere Familien in eher gemischten Stadtvierteln leben, wählen sie für ihre Kinder häufig eine Schule außerhalb der Nachbarschaft. Das kann die soziale Mobilität von Kindern beeinträchtigen, vor allem an Grundschulen, wo die Weichen für den weiteren Bildungsweg gestellt werden. So weisen Schulen mit besonders vielen sozial benachteiligten Kindern im Schnitt deutlich schlechtere Bildungsergebnisse auf. Die Zusammensetzung von Grundschulen kann sich zudem auch auf den Umgang der Kinder mit Diversität und gesellschaftlicher Vielfalt auswirken. Die Schulsegregation ist damit nicht nur ein Spiegel sozialer und räumlicher Ungleichheit, sondern trägt auch dazu bei, diese zu zementieren.

Dieses ILS-TRENDS basiert auf einem laufenden Forschungsprojekt, das von der Deutschen Forschungsgemeinschaft (DFG) finanziert wird (445595495).
Space and energy efficient molecular programming and space efficient text indexing methods for sequence alignment
Creators: name: Thachuk, Christopher Joseph
Publisher: name: University of British Columbia
Year: 2013

description: Nucleic acids play vital roles in the cell by virtue of the information encoded into their nucleotide sequence and the folded structures they form. Given their propensity to alter their shape over time under changing environmental conditions, an RNA molecule will fold through a series of structures called a folding pathway. As this is a thermodynamically-driven probabilistic process, folding pathways tend to avoid high energy structures and those which do are said to have a low energy barrier. In the first part of this thesis, we study the problem of predicting low energy barrier folding pathways of a nucleic acid strand. We show various restrictions of the problem are computationally intractable, unless P=NP. We propose an exact algorithm that has exponential worst-case runtime, but uses only polynomial space and performs well in practice. Motivated by recent applications in molecular programming we also consider a number of related problems that leverage folding pathways to perform computation. We show that verifying the correctness of these systems is PSPACE-hard and in doing so show that predicting low energy barrier folding pathways of multiple interacting strands is PSPACE-complete. We explore the computational limits of this class of molecular programs which are capable, in principle, of logically reversible and thus energy efficient computation. We demonstrate that a space and energy efficient molecular program of this class can be constructed to solve any problem in SPACE ---the class of all space-bounded problems. We prove a number of limits to deterministic and also to space efficient computation of molecular programs that leverage folding pathways, and show limits for more general classes. In the second part of this thesis, we continue the study of algorithms and data structures for predicting properties of nucleic acids, but with quite different motivations pertaining to sequence rather than structure. We design a number of compressed text indexes that improve pattern matching queries in light of common biological events such as single nucleotide polymorphisms in genomes and alternative splicing in transcriptomes. Our text indexes and associated algorithms have the potential for use in alignment of sequencing data to reference sequences.
Radio Polarimetry of Gamma-Ray Bursts Afterglows
Creators: name: Urata, Yuji
Publisher: name: Zenodo
Year: 2023

description: Gamma-ray Bursts (GRBs) are highly energetic explosions in the universe and are currently being exploited as probes of first-generation stars and gravitational wave transients. Although the energetics of GRBs are fundamental physical parameters that reveal their progenitor systems, the total energies have been estimated so far without considering non-energized, cool electrons at the relativistic collisionless shock that do not emit observable radiation, while the existence of such cool electrons is well studied for supernova remnants and solar winds. As the first coincident multi-frequency polarimetry between radio with ALMA and optical with VLT was successfully managed, linear polarizations in radio band are essential for discovering these non-energized electrons, because the Faraday depolarization caused by the non-energized electrons suppress the linear polarization degree at a frequency of 100-1000 GHz. Further coordinated multi-wavelength polarimetric campaigns would improve our understanding of the total jet energies and magnetic field configurations in the emission regions of various types of GRBs, which are required to comprehend the mass scales of their progenitor systems and the physics of collisionless shocks.
High transport critical current densities in textured Fe-sheathed Sr1-xKxFe2As2+Sn superconducting tapes
Creators: name: Gao, Zhaoshun
name: Wang, Lei
name: Yao, Chao
name: Qi, Yanpeng
name: Wang, Chunlei
name: Zhang, Xianping
name: Wang, Dongliang
name: Wang, Chengduo
name: Ma, Yanwei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the realization of grain alignment in Sn-added Sr1-xKxFe2As2 superconducting tapes prepared by ex-situ powder-in-tube method. At 4.2 K, high transport critical current densities Jc of 2.5x10^4 A/cm^2 (Ic = 180 A) in self-field and 3.5x10^3 A/cm^2 (Ic = 25.5 A) in 10 T have been measured. These values are the highest ever reported so far for Fe-based superconducting wires and tapes. We believe the superior Jc in our tape samples are due to well textured grains and strengthened intergrain coupling achieved by Sn addition. Our results demonstrated an encouraging prospect for application of iron based superconductors.
description: 14 pages, 4 figures
title: Sonographic hepatobiliary findings and severity of immunosuppression among children living with HIV in a resource-poor setting
Creators: name: Ibe, Donald
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Infection
subject: Haematologic diseases
subject: AIDS
subject: Laboratory tests
subject: Cost-effectiveness
subject: Complications
subject: Ultrasound
subject: Paediatric

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Liver disease is the most common non-AIDS related cause of death among HIV-infected adults in the western world accounting for 14-18% of all deaths.[1,2,3,4] Very limited literature on hepatobiliary disease is available in the paediatric...
The Very Massive and Hot LMC Star VFTS 682: Progenitor of a Future Dark Gamma-Ray Burst?
Creators: name: Zhang, Dong
name: Stanek, K. Z.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: VFTS 682, a very massive and very hot Wolf-Rayet (WR) star recently discovered in the Large Magellanic Cloud near the famous star cluster R136, might be providing us with a glimpse of a missing link in our understanding of Long Gamma-Ray Bursts (LGRBs), including dark GRBs. It is likely its properties result from chemically homogeneous evolution (CHE), believed to be a key process for a massive star to become a GRB. It is also heavily obscured by dust extinction, which could make it a dark GRB upon explosion. Using Spitzer data we investigate the properties of interstellar dust in the vicinity of R136, and argue that its high obscuration is not unusual for its environment and that it could indeed be a slow runaway ("walkaway") from R136. Unfortunately, based on its current mass loss rate, VFTS 682 is unlikely to become a GRB, because it will lose too much angular momentum at its death. If it were to become a GRB, it probably would also not be dark, either escaping or destroying its surrounding dusty region. Nevertheless, it is a very interesting star, deserving further studies, and being one of only three presently identified WR stars (two others in the Small Magellanic Cloud) that seems to be undergoing CHE.
description: 12 pages, 2 figures, several small changes. To be published in Acta Astronomica. For a brief video explaining the key results of this paper, see http://www.youtube.com/user/OSUAstronomy
title: 20 Jahre Riester-Rente – Private Altersvorsorge braucht einen Neustart
Creators: name: Geyer, Johannes
name: Grabka, Markus M.
name: Haan, Peter
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: J32 Nonwage Labor Costs and Benefits; Private Pensions
subject: Private retirement provision
subject: Riester pension
subject: SOEP

description: Vor 20 Jahren wurde im Zuge der Rentenreform 2001 die Einführung der Riester-Rente beschlossen: Die Riester-Rente sollte ein wesentlicher Baustein des Alterssicherungssystems in Deutschland werden und das sinkende Niveau der gesetzlichen Rentenversicherung mindestens ausgleichen. Daten, die im Rahmen des Sozio-oekonomischen Panels erhoben wurden, zeigen, dass dieses Ziel bisher nicht erreicht wurde. Die Verbreitung der Riester-Rente stagniert seit zehn Jahren bei etwa 25 Prozent der erwerbsfähigen Bevölkerung. Ein Großteil der Haushalte wird also nicht erreicht. Aus sozialpolitischer Sicht ist es besonders problematisch, dass es eine starke Ungleichheit in der Verbreitung gibt, die sich über die Zeit noch verstärkt hat. Im Jahr 2020 hatten nur etwa 13 Prozent der Personen im untersten Einkommensquintil einen Riester-Vertrag im Vergleich zu knapp 32 Prozent im obersten Quintil. Bei den RentenbezieherInnen zeigt sich, dass die Riester-Rente gemessen an allen eigenen Alterseinkommen mit einem Anteil von etwa fünf Prozent bisher nur eine geringe Bedeutung für die Lebensstandardsicherung hat. Die Riester-Rente muss grundlegend reformiert werden, wenn sie ein wesentlicher Baustein des Alterssicherungssystems in Deutschland sein soll. Eine Möglichkeit wäre es, die private Altersvorsoge über einen verpflichtenden staatlichen Vorsorgefonds zu organisieren in Anlehnung an das schwedische Modell eines standardisierten Altersvorsorgeprodukts mit geringen Bürokratiekosten. Dabei muss jedoch garantiert werden, dass die obligatorischen Beiträge auch geleistet werden können, wenn Menschen nur über geringe Einkommen verfügen oder arbeitslos sind.
description: DIW Wochenbericht, 88 (2021), 40, S. 667-673
A New Class of Pulsating Yellow Supergiants
Creators: name: Dorn-Wallenstein, T. Z.
name: Levesque, E. M.
name: Neugent, K. F.
name: Davenport, J. R. A.
name: Morris, B. M.
name: Gootkin, K.
Publisher: name: Zenodo
Year: 2021
Subjects: stars: massive
stars: supergiants
stars: oscillations
stars: winds
stars: mass-loss
stars: variables: general

description: We report the discovery of a new class of pulsating yellow supergiants observed by TESS. These stars are drawn from a sample of 75 cool (A-M) supergiants in the Galaxy and LMC. Stochastic low frequency variability (SLFV) is ubiquitous in the lightcurves of the entire sample. We rule out surface convection as the physical mechanism underlying this variability, suggesting it is connected to SLFV observed in hot stars. After correcting for the stochastic background, we find five yellow supergiants, all with similar luminosities and effective temperatures, that exhibit multiple periodicities on sub-day timescales. The region of the HR diagram containing these stars is not associated with any known class of pulsating star. We dub these stars “Fast Yellow Pulsating Supergiants” (FYPS). We discuss the properties of each individual FYPS, and their potential for unlocking asteroseismic analyses of cool supergiants. We conclude by discussing the significance of this discovery in the context of the red supergiant problem.
First-order multi-k phase transitions and magnetoelectric effects in multiferroic Co3TeO6
Creators: name: Tolédano, Pierre
name: Carolus, Vera
name: Hudl, Matthias
name: Lottermoser, Thomas
name: Khalyavin, Dmitry D.
name: Ivanov, Sergey A.
name: Fiebig, Manfred
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A theoretical description of the sequence of magnetic phases in Co3TeO6 is presented. The strongly first-order character of the transition to the commensurate multiferroic ground state, induced by coupled order parameters corresponding to different wavevectors, is related to a large magnetoelastic effect with an exchange energy critically sensitive to the interatomic spacing. The monoclinic magnetic symmetry C2' of the multiferroic phase permits spontaneous polarization and magnetization as well as the linear magnetoelectric effect. The existence of weakly ferromagnetic domains is verified experimentally by second harmonic generation measurements.
title: The Many Faces of Female Infertility Diagnostic Imaging correlation between conventional Hysterosalpingography and Pelvis MRI
Creators: name: Maldonado Schoijet, Ignacio
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Genital / Reproductive system female
subject: MR
subject: Fluoroscopy
subject: Hysterosalpingography
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: This educational exhibit aims to review the common and uncommon imaging features in Female infertility through conventional Hysterosalpingography (HSG) and Pelvis MRI...
The asymptotics of ranking algorithms
Creators: name: Duchi, John C.
name: Mackey, Lester
name: Jordan, Michael I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistics Theory (math.ST)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We consider the predictive problem of supervised ranking, where the task is to rank sets of candidate items returned in response to queries. Although there exist statistical procedures that come with guarantees of consistency in this setting, these procedures require that individuals provide a complete ranking of all items, which is rarely feasible in practice. Instead, individuals routinely provide partial preference information, such as pairwise comparisons of items, and more practical approaches to ranking have aimed at modeling this partial preference data directly. As we show, however, such an approach raises serious theoretical challenges. Indeed, we demonstrate that many commonly used surrogate losses for pairwise comparison data do not yield consistency; surprisingly, we show inconsistency even in low-noise settings. With these negative results as motivation, we present a new approach to supervised ranking based on aggregation of partial preferences, and we develop $U$-statistic-based empirical risk minimization procedures. We present an asymptotic analysis of these new procedures, showing that they yield consistency results that parallel those available for classification. We complement our theoretical results with an experiment studying the new procedures in a large-scale web-ranking task.
description: Published in at http://dx.doi.org/10.1214/13-AOS1142 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
title: Which number of b-value is better for accurate calculation of virtual MR elastography?
Creators: name: Matsumoto, Yuki
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Technical aspects
subject: Physics
subject: MR-Diffusion/Perfusion
subject: MR
subject: Elastography
subject: MR physics
subject: Liver
subject: Abdomen
subject: Cirrhosis

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Shear stiffness is an important physical property of tissues and has been found to gradually increase with increasing hepatic fibrosis in chronic liver disease [1, 2]. In magnetic resonance imaging (MRI), it can be measured as image contrast by...
Sink or Swim: Creating a Social Media Presence in an Academic Medical Center
Creators: name: Willcox, Sallie
name: Larson, Catherine
Publisher: name: Zenodo
Year: 2014

description: To connect with our users, the health sciences library and its patient branch embraced social media under the auspices of the parent institution. We reached out to identified user groups and tailored messages to them via evolving best practices. This process was accelerated due to a natural disaster. The continuing challenge has been remaining relevant through providing engaging content for users.
title: Wrist Injuries Detected on Magnetic Resonance Imaging in Athletes Participating in the Rio de Janeiro 2016 Summer Olympic Games
Creators: name: Alizai, Hamza
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Athletic injuries
subject: Education
subject: MR
subject: Musculoskeletal system

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Injuries of the wrist and hand comprise up to 9% of all sports-related injuries1. Traumatic wrist injuries are more common in contact sports 1 , while chronic overuse injuries are generally seen in non-contact events such as the racquet sports 2 ....
title: Harte Restriktionen scheinen die wirksamste Maßnahme zu sein, um in einer Pandemie den Flugverkehr zu beschränken: Interview
Creators: name: Seldeslachts, Jo
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021

description: DIW Wochenbericht, 88 (2021), 39, S. 663
Finite Element Simulation of Dense Wire Packings
Creators: name: Vetter, Roman
name: Wittel, Falk K.
name: Stoop, Norbert
name: Herrmann, Hans J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A finite element program is presented to simulate the process of packing and coiling elastic wires in two- and three-dimensional confining cavities. The wire is represented by third order beam elements and embedded into a corotational formulation to capture the geometric nonlinearity resulting from large rotations and deformations. The hyperbolic equations of motion are integrated in time using two different integration methods from the Newmark family: an implicit iterative Newton-Raphson line search solver, and an explicit predictor-corrector scheme, both with adaptive time stepping. These two approaches reveal fundamentally different suitability for the problem of strongly self-interacting bodies found in densely packed cavities. Generalizing the spherical confinement symmetry investigated in recent studies, the packing of a wire in hard ellipsoidal cavities is simulated in the frictionless elastic limit. Evidence is given that packings in oblate spheroids and scalene ellipsoids are energetically preferred to spheres.
description: 17 pages, 7 figures, 1 table
title: Anorectal benign disease – a look through the MRi
Creators: name: Alves, Isabela
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Abdomen
subject: Anatomy
subject: Gastrointestinal tract
subject: MR
subject: Education
subject: Varices
subject: Fistula
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To describe the rectum and anal canal anatomy. To review the magnetic resonance imaging (MRI) techniques in the evaluation of the rectum and anal canal. To review the main imaging findings and complications of most common benign anorectal...