cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Untersuchungen zu Ausspracheproblemen tunesischer Deutsch-lernender und zur Optimierung der Aussprachevermittlung im Deutsch als Tertiärsprache-Unterricht in Tunesien
Creators: name: Toufahi, Dhekra
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 400

description: Die vorliegende Arbeit setzt sich mit dem Thema Ausspracheschwierigkeiten tunesischer Deutschlernender auseinander. Dabei werden Französisch und Englisch als erst- und zweitge-lernte Fremdsprachen in Tunesien berücksichtigt. Deutsch ist demzufolge eine Tertiärsprache. Die im Rahmen dieses Dissertationsvorhabens durchgeführten Untersuchungen zielen darauf ab, real auftretende Ausspracheabweichungen bzw. Interferenzfehler tunesischer Deutschler-nender zu ermitteln. Untersucht werden auch die Ursachen, die zu Problemen bei der Aneig-nung der deutschen Aussprache führen können. Die Ausspracheabweichungen der tunesischen Deutschlernenden werden rezeptiv und produk-tiv untersucht. Basierend auf den Untersuchungsergebnissen werden im letzten Kapitel der Ar-beit Vorschläge für den Ausspracheunterricht und Beispiele für Ausspracheübungen darge-stellt, die zu einer Erleichterung des Fremdsprachenerwerbs im DaF-Unterricht in Tunesien beitragen können.
description: This thesis deals with the topic of pronunciation difficulties Tunisian learners have in the Ger-man language. French and English are considered as first and second learned foreign lan-guages. German is consequently a tertiary language. The research conducted in this dissertation project aims to identify real-world pronunciation deviations or interference errors of Tunisian learners of the German language. The causes that can lead to problems in the acquisition of German pronunciation are also investigated. The pronunciation deviations of Tunisian German learners are examined receptively and pro-ductively. Based on the results of the study, the last chapter of the thesis presents proposals for pronunciation lessons and examples of pronunciation exercises that can help to facilitate the acquisition of foreign languages in GFL teaching in Tunisia.
Vertex-Blend Attribute Compression
Creators: name: Kuth, Bastian
name: Meyer, Quirin
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Computing methodologies
Rendering
Animation
Theory of computation
Data compression

description: Skeleton-based animations require per-vertex attributes called vertex-blend attributes. They consist of a weight tuple and a bone index tuple. With meshes becoming more complex, vertex-blend attributes call for compression. However, no technique exists that exploits their special properties. To this end, we propose a novel and optimal weight compression method called Optimal Simplex Sampling and a novel bone index compression. For our test models, we compress bone index tuples between 2.3:1 and 3.5:1 and weight tuples between 1.6:1 and 2.5:1 while being visually lossless. We show that our representations can speed rendering and reduces GPU memory requirements over uncompressed representations with a similar error. Further, our representations compress well with general-purpose codecs making them suitable for offline-storage and streaming.
description: High-Performance Graphics - Symposium Papers
description: Compression
description: 43
description: 52
description: Bastian Kuth and Quirin Meyer
description: CCS Concepts: Computing methodologies --> Rendering; Animation; Theory of computation --> Data compression
Prävalenz und Risikofaktoren für die Entstehung der distalen sensomotorischen Polyneuropathie bei Patienten mit Diabetes mellitus
Creators: name: Pfannkuche, André
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2021
Subjects: subject: Diabetische Polyneuropathie
subject: 616.462

description: Die distale sensomotorische Polyneuropathie ist eine der bedeutendsten Folgeerkrankungen des Diabetes mellitus. Ziel der vorliegenden Studie ist es, epidemiologische Daten ihrer Prävalenz und Risikofaktoren bei Patienten mit Typ-1- und Typ-2-Diabetes in Sachsen-Anhalt zu erhalten. Hierzu wurden im Rahmen der Registerinitiative „Diabetes und Nerven“ 1004 Patienten mit Diabetes mellitus auf das Vorliegen einer Neuropathie hin untersucht. Zudem wird die Dunkelziffer erfasst und die Patientenversorgung evaluiert. Als Ergebnis zeigt sich eine Gesamtprävalenz der distalen sensomotorischen Polyneuropathie von 40,3 %, wobei die Prävalenz bei Typ-2-Diabetes mit 42,2 % höher ist als bei Typ-1- Diabetes mit 29,1 %. Hauptrisikofaktoren für die Entstehung einer Neuropathie bei Typ-1-Diabetes sind ein „höheres Lebensalter“ und „Episoden schwerer Hypoglykämien mit Bewusstseinsverlust“. Bei Typ-2- Diabetes werden ein „höheres Lebensalter“ sowie ein „kardiovaskuläres-metabolisches Risikoprofil“ als Risikofaktoren identifiziert. Zudem tritt die Neuropathie gehäuft mit mikro- und makrovaskulären Komorbiditäten des Diabetes mellitus (pAVK, Nephropathie und Retinopathie) auf. Weiterhin liegt eine Dunkelziffer von 27,1 % bei an Diabetes mellitus erkrankten Patienten vor. Hieraus kann abgeleitet werden, dass diabetische Neuropathien unterdiagnostiziert sind und präventive Maßnahmen für Folgererkrankungen (diabetisches Fußsyndrom etc.) unzureichend durchgeführt werden.
Synendotendipes lepidus
Creators: name: Bitušík, Peter
name: Slobodníková, Veronika
name: Novikmec, Milan
name: Dudáš, Adam
name: Hamerlík, Ladislav
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Synendotendipes
Synendotendipes lepidus

description: Synendotendipes lepidus (Meigen, 1830)
Material examined.
• 4 males, 1 female, Lake Gargalau 3 (R 5), 6 July 2023.
Distribution.
Palaearctic. Widespread in Europe (Ashe and Cranston 1984, Moller Pillot 2009), and it has been reported from Turkey (Ozbek et al. 2018) and the Russian Far East (Orel 2016).
Habitat.
The species has been recorded mainly from stagnant waters regardless of size and trophic status. Lundström et al. (2010) collected adults from temporary wetlands, and there are data from lowland brooks (Ozbek et al. 2018). Like other species of the genus, it tolerates acid conditions of peatland pools (Plóciennik et al. 2018). According to Moller Pillot (2009), the larvae are miners in the tissues of Nuphar lutea. However, they evidently utilize other types of littoral vegetation, such as sedges, since N. lutea does not occur in the studied lakes.
Remarks.
Species of the genus Synendotendipes are indistinguishable as pupal exuviae, so it is not possible to confirm if Synendotendipes pupal exuviae recorded in other lakes also belong to S. lepidus.
description: Published as part of Bitušík, Peter, Slobodníková, Veronika, Novikmec, Milan, Dudáš, Adam & Hamerlík, Ladislav, 2025, Chironomidae (Diptera) from mountain lakes of the Eastern Carpathians, Romania: First records and insight into diversity, pp. 107-123 in ZooKeys 1233 on pages 107-123, DOI: 10.3897/zookeys.1233.142856
Einfluss eines klinischen Wahlpflichtfachs „Landärztliche Medizin“ auf die Einstellung Medizinstudierender zu einer späteren hausärztlichen Tätigkeit auf dem Land
Creators: name: Normann, Oliver Alexander
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2020
Subjects: subject: Medizinstudium
subject: Wahlpflichtfach
subject: Landarzt
subject: 610.7

description: Vor dem Hintergrund des bereits heute manifesten und sich in Zukunft noch weiter verstärkenden Mangels an Ärztinnen und Ärzten in einigen ländlichen Regionen, stellt sich die Frage nach neuen Optionen, um Studierende für eine solche spätere Tätigkeit zu gewinnen. Ein klinisches Wahlpflichtfach „Landärztliche Medizin“ soll als neuer Ansatzpunkt dienen und wurde hierzu am Institut für Allgemeinmedizin Magdeburg etabliert. Um den Einfluss des Wahlpflichtfachs auf die Einstellung der Teilnehmenden, sowie attraktivitätsfördernde und - hemmende Faktoren für eine ärztliche Tätigkeit auf dem Land zu untersuchen, wurden mit den Teilnehmenden des ersten Wahlfachdurchlaufs 2014 teilstrukturierte Interviews und ein Jahr später Follow-Up-Interviews geführt. Die Interviews und Follow-Up-Interviews wurden anschließend mittels qualitativer Inhaltsanalyse nach Mayring ausgewertet. Ergänzend erfolgte eine Fragebogenerhebung unter den Studierenden der medizinischen Fakultät Magdeburgs. Neben der ländlichen Sozialisation finden sich auch bisher kaum in der Literatur beschriebene Faktoren, wie die von den Studierenden vermutete Anerkennung durch Patienten und Patientinnen auf dem Land, welche attraktivitätsfördernd wirkt oder die fehlende Anerkennung durch Kollegen anderer Fächer, welche attraktivitätshemmend wirkt. Ebenso befürchten die Studierenden eine Schwierigkeit bei der Integration und Abgrenzung in einer dörflichen Gemeinschaft. Das Wahlpflichtfach, welches von allen Teilnehmenden als positive Erfahrung empfunden wird, ist nicht ausschlaggebend für die Entscheidungsfindung, später auf dem Land ärztlich tätig werden zu wollen. Es konnte die Teilnehmenden aber in einer bereits getroffenen Entscheidung bestärken.
Verbesserung der Dokumentationsqualität durch die Anwesenheit eines Dokumentationsassistenten im traumatologischen Schockraum
Creators: name: Mathieu, Sophie-Cecil
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2021
Subjects: subject: Notfallmedizin
subject: Qualitätsmanagement
subject: Medizinische Dokumentation
subject: 616.025

description: Zur Verbesserung der Versorgung schwerverletzter Patienten wird die Implementierung eines Qualitätsmanagementsystems empfohlen. Hierfür ist eine akkurate Dokumentation des Versorgungsprozesses erforderlich, um positive und negative Aspekte der Versorgung zu detektieren und erforderliche Veränderungen zu etablieren. In der vorliegenden Arbeit wurde die Anwesenheit eines Dokumentationsassistenten (DA) auf die Dokumentationsvollständigkeit und einzelne Prozesszeiten im Rahmen der Versorgung untersucht. Durch den Einsatz eines DA konnte eine signifikant höhere Dokumentationsvollständigkeit des Kerndatensatzes des TraumaRegisters der Deutschen Gesellschaft für Unfallchirurgie® (TR-DGU) im Vergleich zum dokumentierenden Arzt erreicht werden. Besonders bei den vom TR-DGU als relevant eingestuften Variablen zeigte sich eine signifikante Verbesserung der Dokumentationsqualität. Die Vollständigkeitsanalyse der einzelnen Qualitätsindikatoren des Kerndatensatzes ergab, dass der DA im Vergleich zum Arzt einen Großteil der Items signifikant vollständiger dokumentierte. Bei Anwesenheit eines DA während der Versorgung des Patienten konnte zusätzlich eine Reduktion der Zeit von der Aufnahme der Patienten in der Notaufnahme bis zur Ganzkörper-Computertomografie nachgewiesen werden. Zusammenfassend ist die Anwesenheit eines DA vorteilhaft für die Datenvollständigkeit und für einzelne Versorgungszeiten. Als langfristiges Ziel sollte die Verfügbarkeit eines DA 24 Stunden täglich eingerichtet werden und in diesem Zusammenhang sollten weitere Untersuchungen zu den Auswirkungen auf die Ökonomie und die Mortalität erfolgen.
Phase space analysis of quintessence fields trapped in a Randall-Sundrum braneworld: a refined study
Creators: name: Escobar, Dagoberto
name: Fadragas, Carlos R.
name: Leon, Genly
name: Leyva, Yoelsy
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we investigate, from the dynamical systems perspective, the evolution of an scalar field with arbitrary potential trapped in a Randall-Sundrum's Braneworld of type II. We consider an homogeneous and isotropic Friedmann-Robertson-Walker (FRW) brane filled also with a perfect fluid. Center Manifold Theory is employed to obtain sufficient conditions for the asymptotic stability of de Sitter solution. We obtain conditions on the potential for the stability of scaling solutions as well for the stability of the scalar-field dominated solution. We prove the there are not late time attractors with 5D-modifications (they are saddle-like). This fact correlates with a transient primordial inflation. In the particular case of a scalar field with potential $V=V_{0}e^{-χϕ}+Λ$ we prove that for $χ<0$ the de Sitter solution is asymptotically stable. However, for $χ>0$ the de Sitter solution is unstable (of saddle type).
description: 12 pages, 8 figures, one affiliation added, matches the published version at CQG
Dimensional reduction in nonlinear filtering: A homogenization approach
Creators: name: Imkeller, Peter
name: Namachchivaya, N. Sri
name: Perkowski, Nicolas
name: Yeong, Hoong C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Computation (stat.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We propose a homogenized filter for multiscale signals, which allows us to reduce the dimension of the system. We prove that the nonlinear filter converges to our homogenized filter with rate $\sqrt{\varepsilon}$. This is achieved by a suitable asymptotic expansion of the dual of the Zakai equation, and by probabilistically representing the correction terms with the help of BDSDEs.
description: Published in at http://dx.doi.org/10.1214/12-AAP901 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Open Surgical Treatment for Chronic Mesenteric Ischemia : Revascularization Techniques, Operative and Clinical Outcomes
Creators: name: Essa, Mohamed
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2020
Subjects: subject: Gefäßchirurgie
subject: Mesenterialgefäßverschluss
subject: 617.413

description: Chronic mesenteric ischemia represents a special challenge in its management. For an optimal revascularization, it requires a great expertise in choosing and carrying out the indicated mesenteric reconstruction. Because of its insidious course, appropriate diagnosis-finding of chronic mesenteric ischemia is not always easy. In its later stages the patients complain of abdominal angina, marked weight loss and ischemic colitis. The clear indication for a vascularsurgical therapy of chronic mesenteric ischemia exists only if there is a stenosis or occlusion of at least 2 of the 3 mesenteric arteries. There are several diagnostic modalities for the diagnosis of mesenteric ischemia such as Duplex-ultrasonography, CTA, MRA and DSA. In principle, there are several reconstruction procedures for the mesenteric vessels. According to the origin of bypass and the direction of arterial flow (compared to the aorta), there are antegrade and retrograde reconstructions. Other surgical techniques such as thrombendarteriectomy and decompression of median arcuate ligament could also be used in some special cases if indicated. The antegrade versus retrograde group offers more primary patency rates perioperatively (90.5 % vs. 70.6 %), this difference was not found at longer follow-up, such as at one year and five years. The benefits of complete revascularization, however, were obtained at the expense of a tendency of more early postoperative complications (83.3 % vs. 55 %). The mortality in the perioperative period was significantly higher in the 2-vessel group (27.8 % vs. 0 %, p=0.017). The vascular surgeon should be prepared to perform various techniques of mesenteric reconstruction (antegrade and retrograde, single or multiple vessels, autologous or alloplastic etc.).
Sesta giornata di studio Ettore Funaioli – 16 luglio 2012
Creators: name: Meneghetti, Umberto
name: Maggiore, Alberto
name: Parenti Castelli, Vincenzo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: ING-IND/13 Meccanica applicata alle macchine

description: In questo volume sono raccolte le memorie presentate in occasione della “Sesta Giornata di Studio Ettore Funaioli”, che si è svolta il 16 luglio 2012 presso la Facoltà di Ingegneria dell’Alma Mater Studiorum – Università di Bologna.
La Giornata è stata organizzata dagli ex allievi del Prof. Funaioli con la collaborazione del DIEM – Dipartimento di Ingegneria delle Costruzioni Meccaniche, Nucleari, Aeronautiche e di Metallurgia dell’Alma Mater Studiorum – Università di Bologna e con il patrocinio dell’Accademia delle Scienze dell’Istituto di Bologna e del GMA – Gruppo di Meccanica Applicata.
The Universal Askey-Wilson Algebra and DAHA of Type $(C_1^{\vee},C_1)$
Creators: name: Terwilliger, Paul
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 33D80

description: Let $\mathbb F$ denote a field, and fix a nonzero $q\in\mathbb F$ such that $q^4\not=1$. The universal Askey-Wilson algebra $Δ_q$ is the associative $\mathbb F$-algebra defined by generators and relations in the following way. The generators are $A$, $B$, $C$. The relations assert that each of $A+\frac{qBC-q^{-1}CB}{q^2-q^{-2}}$, $B+\frac{qCA-q^{-1}AC}{q^2-q^{-2}}$, $C+\frac{qAB-q^{-1}BA}{q^2-q^{-2}}$ is central in $Δ_q$. The universal DAHA $\hat H_q$ of type $(C_1^\vee,C_1)$ is the associative $\mathbb F$-algebra defined by generators $\lbrace t^{\pm1}_i\rbrace_{i=0}^3$ and relations (i) $t_i t^{-1}_i=t^{-1}_i t_i=1$; (ii) $t_i+t^{-1}_i$ is central; (iii) $t_0t_1t_2t_3=q^{-1}$. We display an injection of $\mathbb F$-algebras $ψ:Δ_q\to\hat H_q$ that sends $A\mapsto t_1t_0+(t_1t_0)^{-1}$, $B\mapsto t_3t_0+(t_3t_0)^{-1}$, $C\mapsto t_2t_0+(t_2t_0)^{-1}$. For the map $ψ$ we compute the image of the three central elements mentioned above. The algebra $Δ_q$ has another central element of interest, called the Casimir element $Ω$. We compute the image of $Ω$ under $ψ$. We describe how the Artin braid group $B_3$ acts on $Δ_q$ and $\hat H_q$ as a group of automorphisms. We show that $ψ$ commutes with these $B_3$ actions. Some related results are obtained.
A multi-factor inequality approach to a transfer scheme: the case of Common Agricultural Policy
Creators: name: Palestini, Arsen
name: Pignataro, Giuseppe
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: SECS-P/02 Politica economica

description: The purpose of this paper is to propose theoretical foundations on the impact of transfer scheme, e.g. Community Agricultural Policy, on income inequality within European Countries. First, we show that ex-post inequality (in the after-transfer distribution) may increase if either initial aggregate income or the amount of fiscal contributions are sufficiently high. Second according to welfare ordering, we characterize a multi-factor decomposition of the Atkinson index to gauge the impact of each income source on the inequality profile. Third, we introduce a methodology to construct a cooperative game played by different income factors (as net incomes and/or incoming transfers) explicitly measuring the cost of inequality across the population in terms of welfare loss. We finally rely on Banzhaf and Shapley values to determine the marginal contributions of each factor to overall inequality.
Directed Acyclic Graph Encoding for Compressed Shadow Maps
Creators: name: Scandolo, Leonardo
name: Eisemann, Elmar
Publisher: name: The Eurographics Association
Year: 2021
Subjects: I.3.7 [Computer Graphics]
Three Dimensional Graphics and Realism
Color
shading
shadowing
texture

description: Detailed shadows in large-scale environments are challenging. Our approach enables efficient detailed shadow computations for static environments at a low memory cost. It builds upon compressed precomputed multiresolution hierarchies but uses a directed acyclic graph to encode its tree structure. Further, depth values are compressed and stored separately and we use a bit-plane encoding for the lower tree levels entries in order to further reduce memory requirements and increase locality. We achieve between 20% to 50% improved compression rates, while retaining high performance.
description: High-Performance Graphics - Symposium Papers
description: Compression
description: 53
description: 59
description: Leonardo Scandolo and Elmar Eisemann
description: Categories and Subject Descriptors (according to ACM CCS): I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism-Color, shading, shadowing, and texture
Arbeitsphysiologische Untersuchungen beim Einsatz digitaler Assistenzsysteme für variantenreiche Montageprozesse in der Arbeitswelt 4.0
Creators: name: Minow, Annemarie
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2021
Subjects: subject: Arbeitsphysiologie
subject: Assistenzsystem
subject: Digitalisierung
subject: 612.042

description: Digitale Assistenzsysteme finden zunehmend Eingang in Produktionsumgebungen und bei der Ausführung manueller Montagearbeiten. Die bisherigen Erkenntnisse zu den Auswirkungen derartiger Systeme auf nutzerbezogene Aspekte sind jedoch nicht ausreichend. Ziel dieser Arbeit war es, durch aufeinander aufbauende Teilstudien weitere arbeitsphysiologische Erkenntnisse zu den Auswirkungen digitaler Assistenzsysteme auf den Menschen zu gewinnen. Diese sollen in der weiteren Entwicklung digitaler Assistenzsysteme mitberücksichtigt werden. Im Rahmen einer Vorstudie und zwei User-Tests konnten mit mehrdimensionalen arbeitswissenschaftlichen Methoden nach dem Mehrebeneansatz von Fahrenberg (1969) Ergebnisse zu den Auswirkungen digitaler Assistenzsysteme auf die psychophysiologische Beanspruchung, objektive Leistung und das Gebrauchstauglichkeitsempfinden gewonnen werden. Jedoch sind weiterhin insbesondere längsschnittliche Felduntersuchungen nötig, um einen schädigungslosen Einsatz von digitalen Assistenzsystemen zu gewährleisten.
Additional file 1 of Molecular, cellular and neurological consequences of infection by the neglected human pathogen Nocardia
Creators: name: Ji, Xingzhao
name: Han, Lichao
name: Zhang, Weiying
name: Sun, Lina
name: Xu, Shuai
name: Qiu, Xiaotong
name: Fan, Shihong
name: Li, Zhenjun
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Neuroscience
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Additional file 1: Figure S1. [Heat map of the Pearson correlation of gene expression between samples for RNA-seq data]. Figure S2. [KEGG pathway analysis of DEGs for N. farcinica and A549 cells]. Figure S3. [KEGG pathway analysis]. Figure S4. [Validation of RNA-seq via qRT–PCR]. Figure S5. [Volcano plot obtained from DESeq2 analysis of DEGs from Nocardia farcinica]. Figure S6. [KEGG pathway analysis of Nocardia at 3 and 6 hpi]. Figure S7. [Analysis of the N. farcinica mutant strains]. Figure S8. [Volcano plot obtained from DESeq2 analysis of DEGs from A549 cells]. Figure S9. [The colony status of the Nocardia strains on the blood plate]. Figure S10. [Analysis of inflammatory factors in serum and brain]. Figure S11. [Original gel images with indicated figures].
Applications of stochastic optimization models in patient screening and blood inventory management
Creators: name: Sabouri, Alireza Bagh Abbas
Publisher: name: University of British Columbia
Year: 2014

description: This thesis comprises three chapters with applications of the stochastic optimization models in healthcare as a central theme. The first chapter considers a patient screening problem. Patients on the kidney transplant waiting list are at higher risk for developing cardiovascular disease (CVD), which makes them ineligible for transplant. Therefore, transplant centers screen waiting patients to identify patients with severe CVD. We propose a model for finding screening strategies, with the objective of minimizing sum of the expected screening cost and the expected penalty cost associated with transplanting an organ to an ineligible patient. Our results suggest that current screening guidelines, which are only based on patients' risk for developing CVD, are significantly dominated by policies that also consider factors related to patients' waiting time. In the second chapter, we extend our results from the first chapter to the case of inspecting a vital component which is needed at a random future time when an emergency occurs. If the component is not operational at that time, the system incurs a large penalty, which we want to avoid through inspections and replacements. We propose a model and solution algorithm for finding an inspection policy that minimizes the infinite horizon discounted expected penalty, replacement, and inspection costs. We also discuss other structural properties of the solution, as well as insights based on numerical results. In the third chapter, we consider inventory decisions regarding issuing blood in a hospital. This research is motivated by recent findings in medicine that the age of transfused blood can affect health outcomes, with older blood contributing to more complications. Current practice at hospital blood banks is to issue blood in order from oldest to youngest inventory, so as to minimize shortage. However, the conflicting objective of reducing the age of blood transfused requires an issuing policy that also depends on the inventory of units of different ages. We propose a model that balances the trade-off between the average age of blood transfused and the shortage rate. Our numerical results suggest we can significantly reduce the age of transfused blood with a relatively small increase in the shortage rate.
Refined Holographic Entanglement Entropy for the AdS Solitons and AdS black Holes
Creators: name: Ishihara, Masafumi
name: Lin, Feng-Li
name: Ning, Bo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the refinement of the holographic entanglement entropy for the holographic dual theories to the AdS solitons and AdS black holes, including the corrected ones by the Gauss-Bonnet term. The refinement is obtained by extracting the UV-independent piece of the holographic entanglement entropy, the so-called renormalized entanglement entropy which is independent of the choices of UV cutoff. Our main results are (i) the renormalized entanglement entropies of the AdS$_{d+1}$ soliton for $d=4,5$ are neither monotonically decreasing along the RG flow nor positive definite, especially around the deconfinement/confinement phase transition; (ii) there is no topological entanglement entropy for AdS$_5$ soliton even with Gauss-Bonnet correction; (iii) for the AdS black holes, the renormalized entanglement entropy obeys an expected volume law at IR regime, and the transition between UV and IR regimes is a smooth crossover even with Gauss-Bonnet correction; (iv) based on AdS/MERA conjecture, we postulate that the IR fixed-point state for the non-extremal AdS soliton is a trivial product state.
description: 48 pages, 24 figures; v2: few typos corrected; v3: mistake on the choice of dominant phase is corrected, differential subtraction scheme is introduced to remove the UV cutoff-ambiguity, some of the conclusions on RG flow are changed; v4: statement about C theorem revised; v5 Final version to NPB
Information and Learning in Oligopoly: an Experiment
Creators: name: Bigoni, Maria
name: Fort, Margherita
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: SECS-P/05 Econometria

description: This paper presents an experiment on learning in repeated games, which complements the analysis of players' actual choices with data on the information acquisition process they follow. Subjects play a repeated Cournot oligopoly, with limited a priori information. The econometrics hinges on a
model built upon Experience Weighted Attraction learning, and the simultaneous analysis of data on the information gathered and on actions taken
by the subjects. Results suggest that learning is a composite process, in which different components coexist. Adaptive learning emerges as the leading
element, but when subjects look at the strategies individually adopted by their competitors they tend to imitate the most successful behavior, which
makes markets more competitive. Reinforcement learning also plays a role, as subjects favor strategies that have yielded higher profits in the past.
Compression and Rendering of Textured Point Clouds via Sparse Coding
Creators: name: Schuster, Kersten
name: Trettner, Philip
name: Schmitz, Patric
name: Schakib, Julian
name: Kobbelt, Leif
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Computing methodologies
Point based models
Texturing
Image compression

description: Splat-based rendering techniques produce highly realistic renderings from 3D scan data without prior mesh generation. Mapping high-resolution photographs to the splat primitives enables detailed reproduction of surface appearance. However, in many cases these massive datasets do not fit into GPU memory. In this paper, we present a compression and rendering method that is designed for large textured point cloud datasets. Our goal is to achieve compression ratios that outperform generic texture compression algorithms, while still retaining the ability to efficiently render without prior decompression. To achieve this, we resample the input textures by projecting them onto the splats and create a fixed-size representation that can be approximated by a sparse dictionary coding scheme. Each splat has a variable number of codeword indices and associated weights, which define the final texture as a linear combination during rendering. For further reduction of the memory footprint, we compress geometric attributes by careful clustering and quantization of local neighborhoods. Our approach reduces the memory requirements of textured point clouds by one order of magnitude, while retaining the possibility to efficiently render the compressed data.
description: High-Performance Graphics - Symposium Papers
description: Compression
description: 61
description: 73
description: Kersten Schuster, Philip Trettner, Patric Schmitz, Julian Schakib, and Leif Kobbelt
description: CCS Concepts: Computing methodologies --> Point-based models; Texturing; Image compression
Unconditional and Conditional Quantile Treatment Effect:
Identification Strategies and Interpretations
A
Creators: name: Fort, Margherita
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: SECS-P/05 Econometria

description: This paper reviews strategies that allow one to identify the effects of policy interventions on the unconditional or conditional distribution of the outcome of interest. This distiction is irrelevant when one focuses on average treatment effects since identifying assumptions typically do not affect the parameter's interpretation. Conversely, finding the appropriate answer to a research question on the effects over the distribution requires particular attention in the choice of the identification strategy. Indeed, quantiles of the conditional and unconditional distribution of a random variable carry a different meaning even if identification of both these set of parameters may require conditioning on observed covariates.
Einflußfaktoren und Outcome nach offen gefäßchirurgischer und interventioneller Rekonstruktion von Nahtaneurysmen
Creators: name: Romancik, Peter
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2021
Subjects: subject: Aneurysma spurium
subject: Gefäßchirurgie
subject: Rezidiv
subject: 617.41301

description: Die Nahtaneurysmen (NA) sind mit dem optimierten peri-interventionellen/-operativen Management ein relevanter Aspekt einer anstehenden Sekundärversorgung geworden. In der vorliegenden retrospektiven Arbeit wurden 86 Patienten mit 106 NA analysiert, die im Zeitraum vom 01.04.2010 bis 01.09.2016 in der Klinik für Gefäßchirurgie im Klinikum Magdeburg gGmbH interventionell oder operativ behandelt worden sind. Das ganze Patientenkollektiv (NA-Gruppe) bestand aus zwei Subgruppen: Patienten mit NA ohne Rezidiv im Beobachtungszeitraum (NAOR) und mit einem Rezidiv (NAMR). 22,1 % der Patienten entwickelten Synchronaneurysmen. Die meisten NA traten nach Anlage einer aortobifemoralen Prothese (43,4 %) auf und die häufigste Lokalisation war die Leistenregion (81,1 %). Ein signifikanter zeitlicher Unterschied bis zum Auftreten eines NA und dessen Rezidiv bzw. ein signifikanter Unterschied in der Durchmessergröße bei den Leisten-NA und deren Rezidiv hat sich nicht bestätigt. Bei den Patienten mit und ohne Thrombendarteriektomie im Rahmen der Erstoperation konnte bei der NA-Entwicklung kein signifikanter zeitlicher Unterschied nachgewiesen werden, obwohl dies in der Literatur als Risikofaktor beschrieben ist. Bei einem Vergleich der Operationsmethoden (Aneurysmorrhaphie mit/ohne Patch vs. Interponat) wies die Interponatanlage die niedrigste Rezidivrate auf. Bei der Versorgung von NA gewinnen die interventionellen Techniken dank einer geringeren Komplikationsrate und einer reduzierten Invasivität an Bedeutung, wobei die Leistenregion weiterhin eine Domäne der offenen Rekonstruktion bleibt.
Finding maxmin allocations in cooperative and competitive fair division
Creators: name: Dall'Aglio, Marco
name: Di Luca, Camilla
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Computer Science and Game Theory (cs.GT)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We consider upper and lower bounds for maxmin allocations of a completely divisible good in both competitive and cooperative strategic contexts. We then derive a subgradient algorithm to compute the exact value up to any fixed degree of precision.
description: 20 pages, 3 figures. This third version improves the overll presentation; Optimization and Control (math.OC), Computer Science and Game Theory (cs.GT), Probability (math.PR)
Improving the User Query for the Boolean Model Using Genetic Algorithms
Creators: name: Nassar, Mohammad Othman
name: Mashagba, Feras Al
name: Mashagba, Eman Al
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The Use of genetic algorithms in the Information retrieval (IR) area, especially in optimizing a user query in Arabic data collections is presented in this paper. Very little research has been carried out on Arabic text collections. Boolean model have been used in this research. To optimize the query using GA we used different fitness functions, different mutation strategies to find which is the best strategy and fitness function that can be used with Boolean model when the data collection is the Arabic language. Our results show that the best GA strategy for the Boolean model is the GA (M2, Precision) method.
description: 4 pages; ISSN (online): 1694-0814 this paper has been withdrawn by the author due to a crucial errors in table 1 and 2. other errors are related to the final results
Einfluss der neuen Klassifizierungsmodelle im chirurgischen Management der akuten Appendizitis
Creators: name: Andrić, Mihailo
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2020
Subjects: subject: Blinddarmentzündung
subject: Appendektomie
subject: 617.5545

description: Das Ziel dieser Analyse war den Einfluss von Ausprägung einer akuten Appendizitis auf das Appendizitis - Management im UKMD zu evaluieren. 110 Patienten aus dem Jahr 2018 wurden retrospektiv erfasst. Es wurden 63,6 % (n = 70) Patienten mit einer komplizierten und 36, 4 % (n = 40) Patienten mit einer unkomplizierten Appendizitis, ohne Unterschied bezüglich des Geschlechtes, des Alters und des BMI, identifiziert. Ein höherer ASA - Stadium, hohe Leukozyten- und CrP - Werte, längere OP - Dauer, Durchführung einer intraoperativen Drainageineinlage, postoperative Morbidität, längere Dauer des stationären Aufenthaltes, die Durchführung sowie die längere Dauer der postoperativen Antibiotikatherapie korrelierten signifikant mit einem fortgeschrittenen Befund einer Appendizitis. Eine Sonographie wurde mit einer Sensitivität von 67,36 % für den Nachweis und 43,15 % für die Einteilung einer Appendizitis durchgeführt. Eine Appendektomie wurde zu 94,5 % laparoskopisch und zu 52,7 % durch einen Assistenzarzt unter Anleitung durchgeführt. Die intraoperative Drainageneinlage erfolgte bei 52,7 % der Fälle. Der Befund einer Umgebungsphlegmone zeigte keinen Unterschied in der Notwendigkeit einer Drainageneinlage und der postoperativen Fortsetzung der Antibiotikatherapie zum Befund einer unkomplizierten Appendizitis. Zusammenfassend scheint die Implementierung der Einteilung einer akuten Appendizitis nach EAES 2015 für die differenzierte Behandlung einer Appendizitis klinisch relevant zu sein. So könnten die Drainageneinlage und die postoperative Antibiotikatherapie bei einer unkomplizierten Appendizitis und einer Appendizitis mit Phlegmone vermieden werden.
COPD Assessment Test as a Screening Tool for Anxiety and Depression in Stable COPD Patients: A Feasibility Study
Creators: name: Liu, Meishan
name: Li, Yuna
name: Yin, Danfeng
name: Wang, Ying
name: Fu, Tingting
name: Zhu, Zhaomeng
name: Zheng, Chunming
name: Huang, Kewu
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mental Health
subject: Hematology

description: Anxiety and depression are common comorbidities in chronic obstructive pulmonary disease (COPD) patients but are often under-diagnosed. We aimed to assess the suitability of the COPD Assessment Test (CAT) in screening anxiety and depression in patients with COPD. Stable COPD patients from a cross-sectional observational study were assessed by CAT. Anxiety and depression were identified using the Generalized Anxiety Disorder questionnaire (GAD-7) and Patient Health Questionnaire (PHQ-9), respectively. Logistic regression analysis and receiver operating characteristic curve analysis were used to identify factors associated with anxiety or depression and to calculate the predictive values. A total of 530 stable COPD patients were enrolled and of those, the proportions of anxiety and depression were 17.0% and 21.5%, respectively. The adjusted odds ratios of the CAT for the presence of anxiety and depression were 1.094 (95%CI: 1.057–1.131) and 1.143 (95%CI: 1.104–1.183), respectively. The CAT score had a significant predictive value for the presence of anxiety (AUC = 0.709) and depression (AUC = 0.791) with an optimum cutoff score of 15. However, the psychometric properties of CAT were undesirable, presenting high negative predictive value (NPV) but low positive predictive value (PPV). Among CAT items, analysis further showed that non-respiratory CAT components were superior to respiratory components in identifying both anxiety and depression. Our results indicated that CAT is more useful to exclude anxiety and depression rather than detect them.
Airport charge, traffic volume and car rental price : empirical evidence at US airports
Creators: name: Shi, Zijun
Publisher: name: University of British Columbia
Year: 2014

description: This paper examines the interaction among airport aeronautical charge, traffic volume, and car rental service charge by employing a cross-section dataset covering 337 airports in the United States. Other determinants of the aeronautical charge are also examined. Using the method of three stage least squares, the main empirical findings are: (1) Car rental price has no significant impact on passenger volume, indicating that rental cost, which is an important cost category of airport concessional goods, does not affect passenger volume of airport. (2) Car rental price has no significant effect on aeronautical charge. (3) Only rental price at airports with a very low transfer rate responds positively to passenger volume. Overall, rental price does not respond to passenger volume or aeronautical charge. (4) Aeronautical charge has a significant negative effect on passenger volume, but it has no significant effect on car rental price.
Banks Information Policies, Financial Literacy and Household
Wealth A
Creators: name: Fort, Margherita
name: Manaresi, Francesco
name: Trucchi, Serena
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: SECS-P/05 Econometria

description: We investigate the causal effect of financial literacy on financial assets, exploiting banks information policies for identification. In Italy, banks who belong to the PattiChiari consortium have implemented policies aimed at increasing transparency and procedural simplification. These policies may affect individuals' financial literacy without involving any direct cost for clients in terms of time, effort or resources, as we show in the paper. We exploit confidential information on whether individuals have their main bank account in one bank in the PattiChiari consortium to instrument their financial literacy level. We show that these policies have a positive and significant effect on both knowledge of financial instruments and household financial assets. Our results suggest that banks information policies have the potential to be an effective tool to increase individuals' financial literacy and that the relationship between financial literacy and wealth is largely underestimated by standard regression models.
Disclosure of Personal Information under Risk of Privacy Shocks
Creators: name: Feri, Francesco
name: Giannetti, Caterina
name: Jentzsch, Nicola
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: SECS-P/05 Econometria

description: Companies are under an increasing pressure by policy makers to publicize data breaches. Such notification obligations require announcing the loss of personal data collected from customers, because of hacker attacks or other incidents. While notification is likely to impact on firms’ reputation, we know little about the impact such notifications have on consumers with respect to disclosure of their personal data. We present the problem as a dynamic lottery with personal data under the risk of privacy shocks and experimentally study how the privacy breach notification changes an individual’s behavior regarding data disclosure. Our results suggest that the notification induces individuals – disregarding the sensitivity of their data – to disclose more.
3D Visualisations Should Not be Displayed Alone - Encouraging a Need for Multivocality in Visualisation
Creators: name: Roberts, Jonathan C.
name: Mearman, Joseph W.
name: Butcher, Peter W. S.
name: Al-Maneea, Hayder M.
name: Ritsos, Panagiotis D.
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Human centered computing
visualisation
Computing methodologies
Computer graphics

description: We believe that 3D visualisations should not be used alone; by coincidentally displaying alternative views the user can gain the best understanding of all situations. The different presentations signify manifold meanings and afford different tasks. Natural 3D worlds implicitly tell many stories. For instance, walking into a living room, seeing the TV, types of magazines, pictures on the wall, tells us much about the occupiers: their occupation, standards of living, taste in design, whether they have kids, and so on. How can we similarly create rich and diverse 3D visualisation presentations? How can we create visualisations that allow people to understand different stories from the data? In a multivariate 2D visualisation a developer may coordinate and link many views together to provide exploratory visualisation functionality. But how can this be achieved in 3D and in immersive visualisations? Different visualisation types, each have specific uses, and each has the potential to tell or evoke a different story. Through several use-cases, we discuss challenges of 3D visualisation, and present our argument for concurrent and coordinated visualisations of alternative styles, and encourage developers to consider using alternative representations with any 3D view, even if that view is displayed in a virtual, augmented or mixed reality setup.
description: Computer Graphics and Visual Computing (CGVC)
description: Data and Visualisation
description: 1
description: 9
description: Jonathan C. Roberts, Joseph W. Mearman, Peter W. S. Butcher, Hayder M. Al-Maneea, and Panagiotis D. Ritsos
description: CCS Concepts: Human-centered computing --> visualisation; Computing methodologies --> Computer graphics
Einfluss transkutaner Vagusnervstimulation (tVNS) auf selektive Aufmerksamkeitsprozesse im Kontext der ereigniskorrelierten Potentiale P300 und P3a
Creators: name: Velling, Andreas
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2021
Subjects: subject: Vagus
subject: Ereigniskorreliertes Potenzial
subject: 612.804

description: Diese Promotionsarbeit verfolgte das Ziel mittels tVNS selektive Aufmerksamkeitsprozesse zu beeinflussen. Hierzu stellten folgende neurophysiologischen Hypothesen die Grundlage dar: Die Interaktionen zwischen tVNS und LC-Aktivität sowie der Einfluss der LC-Aktivität an der Generierung und Modulation der ereigniskorrelierten Potentiale P300 und P3a. Die P300 und P3a gelten als Parameter selektiver Aufmerksamkeit und wurden anhand von EEG-Daten und zwei auditorischen Oddball Paradigmen erfasst. Dabei wurde zusätzlich der Einfluss der Stimulationsintensität auf die P300 und P3a untersucht. Hierfür wurden tVNS bei einer Intensität von 0,4 mA und 4 mA jeweils mit einer Sham-kontrollierten Bedingung verglichen. Zur Analyse des Einflusses von tVNS auf Verhaltensdaten wurde die Antwortzeit auf einen devianten Stimulus gemessen. Diese war in einem Novelty Oddball Paradigma bei einer Intensität von 4 mA im Vergleich zu 0,4 mA signifikant verlängert. Dies konnte sowohl unter tVNS- als auch unter kontrollierender Sham-Bedingung mit jeweils 4 mA Intensität beobachtet werden. Dieser Zusammenhang ist daher intensitätsabhängig, jedoch stimulationsunabhängig. In den EEG-Daten konnte ein signifikanter stimulations- und intensitätsabhängiger Effekt der P300-Amplitude in einem Classic Oddball Paradigma erzielt werden. Die Amplitude war unter tVNS mit einer Intensität von 4 mA signifikant verringert. Im Novelty Oddball Paradigma war sie unter tVNS mit 4 mA marginal signifikant verringert. Die P3a-Amplitude blieb sowohl bei 4 mA als auch bei 0,4 mA Intensität der tVNS durchweg stimulationsunabhängig. Zusammenfassend geben die Ergebnisse dieser Arbeit keinen Hinweis darauf, dass tVNS die Antwortzeit in Classic- oder Novelty Oddball Paradigmen reduziert. Sie liefern jedoch Hinweise auf einen stimulations- und intensitätsabhängigen Zusammenhang zwischen tVNS und der Amplitude der P300, nicht jedoch der Amplitude der P3a.
Additional file 2 of Association of maternal obesity with preterm birth phenotype and mediation effects of gestational diabetes mellitus and preeclampsia: a prospective cohort study
Creators: name: Liu, Kan
name: Chen, Yixuan
name: Tong, Jianing
name: Yin, Aiqi
name: Wu, Linlin
name: Niu, Jianmin
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Science Policy
subject: Computational Biology

description: Additional file 2: Table S2. The relative risks of preterm birth with or without GDM/PE.