cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hierarchical equations of motion approach to transport through an Anderson impurity coupled to interacting Luttinger liquid leads
Creators: name: Okamoto, Jun-ichi
name: Mathey, Ludwig
name: Härtle, Rainer
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We generalize the hierarchical equations of motion method to study electron transport through a quantum dot or molecule coupled to one-dimensional interacting leads that can be described as Luttinger liquids. Such leads can be realized, for example, by quantum wires or fractional quantum Hall edge states. In comparison to noninteracting metallic leads, Luttinger liquid leads involve many-body correlations and the single-particle tunneling density of states shows a power-law singularity at the chemical potential. Using the generalized hierarchical equations of motion method, we assess the importance of the singularity and the next-to-leading order many-body correlations. To this end, we compare numerically converged results with second and first-order results of the hybridization expansion that is inherent to our method. As a test case, we study transport through a single-level quantum dot or molecule that can be described by an Anderson impurity model. Cotunneling effects turn out to be most pronounced for attractive interactions in the leads or repulsive ones if an excitonic coupling between the dot and the leads is realized. We also find that an interaction-induced negative differential conductance near the Coulomb blockade thresholds is slightly suppressed as compared to a first-order and/or rate equation result. Moreover, we find that the two-particle ($n$-particle) correlations enter as a second-order ($n$-order) effect and are, thus, not very pronounced at the high temperatures and parameters that we consider.
description: 15 pages, 7 figures
Ortodoxia y heterodoxia en el campo literario nacional: El caso de García Márquez
Creators: name: Rodríguez Jiménez, Oswaldo
Publisher: name: Universidad de Cartagena
Year: 1998
Subjects: Gaminismo - Colombia

description: Tesis (Profesional en Lingüística y Literatura) -- Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Lingüística y Literatura, 1998
description: Aquí, en este modesto trabajo, se retomará dicho tema con el propósito de inscribirlo dentro de una propuesta de estudio que le confiera un carácter sistemático, orgánico, a la luz de los planteamientos teóricos de Pierre Bourdieu. A partir de la noción de campo podrá observarse cómo se hace evidente, en el periodo inicial de Gabriel García Márquez como escritor y periodista en Costa Atlántica, un problema que Bourdieu apunta como una ley general.
title: Temporal modulation of the immunomodulatory surface molecule CD47 is a precondition for remyelination in MS lesions
Creators: name: Junker, Andreas
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: CD47 is overexpressed in actively remyelinating and in fully remyelinated MS lesions, so-called shadow plaques, whereas active MS lesions without signs of remyelination show a downregulation of this surface molecule. In this study we add a new role for CD47 which was previously described as an immunomodulatory[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Post Project Success Evaluation: In The Case Of Addis Ababa City Administration Real Property Registration System
Creators: name: Fekibelu, Bizuwork
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Urban Land management in Ethiopia is in transition and faces many interrelated challenges simultaneously. Urbanization, globalization, sustainable development, technology, and micro economic reforms are the main drivers of change. The government of Ethiopia is attempting to replace the old system of urban land tenure (the "permit" system) by a more market‐oriented system of long‐term leases. As result, Addis Ababa City Administration decided to contract an international consultant (Hansa Luftbild) a German based geo‐information, and mapping company, to establish a modern property registration and land information system. Evaluation of the end- user's level of agreement on the land registration system in Addis Ababa, Ethiopia and factors affecting the overall real property registration system success dimensions and associated system challenges are the focus of this study. Targeting land- related professionals as end-users of land services, a survey was conducted to extract data on their level of agreement on overall system success. The frequency distribution and the percentage of the answers to the questionnaire on success evaluation dimensions using the 5-point Likert scale shows 56 % of responses positively agree on the eight dimensions of system success. Even though, the majority of responses show somewhat positive agreement on the evaluation dimensions, the number 56% is very far from 100% and there is no full confidence to say that the system satisfies all users' needs. The positive responses however, is an indication that if Addis Ababa city administration works on the limiting factors the work of the city administration can be enhanced.
Degenerations of Ruijsenaars-van Diejen operator and q-Painleve equations
Creators: name: Takemura, Kouichi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 39A13, 33E17, 33E10

description: It is known that the Painleve VI is obtained by connection preserving deformation of some linear differential equations, and the Heun equation is obtained by a specialization of the linear differential equations. We inverstigate degenerations of the Ruijsenaars-van Diejen difference opearators and show difference analogues of the Painleve-Heun correspondence.
description: 28 pages, references added, minor revision
Revealing quantum contextuality using a single measurement device
Creators: name: Singh, Jaskaran
name: Bhati, Rajendra Singh
name: Arvind
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we analyse the notion of measurement non-contextuality (MNC) and identify contextual scenarios which involve sequential measurements of only a single measurement device. We show that any non-contextual ontological model fails to explain the statistics of outcomes of a single carefully constructed positive operator valued measure (POVM) executed sequentially on a quantum system. The context of measurement arises from the different configurations in which the device can be used. We develop an inequality from the non-contextual (NC) ontic model, and construct a quantum situation involving measurements from the KCBS inequality. We show that the resultant statistics arising from this device violate our NC inequality. This device can be generalised by incorporating measurements from arbitrary $n$-cycle contextuality inequalities of which $n = 5$ corresponds to the KCBS inequality. We show that the NC and quantum bounds for various scenarios can be derived more easily using only the functional relationships between the outcomes for larger values $n$. This makes it one of the simpler contextual inequalities to analyse.
description: Published in Physical Review A. This version is close to the published one
Elucidation of the molecular mechanisms of biased agonism at the adenosine A1 receptor
Creators: name: MCNEILL, SAMANTHA MARIE
Publisher: name: Monash University
Year: 2021
Subjects: Pharmaceutical sciences
Pharmacology and pharmaceutical sciences not elsewhere classified

description: The adenosine A1 receptor has been explored as a drug target for heart attack. Despite this, no drugs that target this receptor have been approved for clinical use because in addition to protecting the heart, activation of this drug target also causes the severe slowing of heart rate. Recently compounds have been identified which can protect the heart but avoid these effects on heart rate. However, it is not know how they can avoid having effects on heart rate. This thesis examines how these compounds can achieve this unique profile. By testing how these compounds behave in cells, this thesis provided a framework to explain how they work. It is likely this will facilitate the design of novel drugs for the adenosine A1 receptor.
Estrategias pedagógicas para el fortalecimiento de la convivencia escolar en los niños y niñas del grado transición de la Institución educativa Juan José Nieto - sede Baranoa
Creators: name: Julio Morales, Doris
name: Molina Montalvo, Regina Ismenia
name: Tobinson Arnedo, Angélica Del Carmen
Publisher: name: Universidad de Cartagena
Year: 2015
Subjects: Aprendizaje - Investigación

description: Tesis (Licenciada en Pedagogía Infantil) -- Universidad de Cartagena en convenio con la Universidad del Tolima. Facultad de ciencias sociales y educación. Programa de licenciatura en pedagogía infantil, 2015
description: A partir de las prácticas pedagógicas realizadas, se ha podido observar que en la Institución Educativa Juan José Nieto - Sede Baranoa es común apreciar deficiencias en la apropiación de valores, conductas inadecuadas y actitudes inapropiadas en los niños y niñas del Grado transición que cursan estudios en esa institución, lo cual dificulta el proceso de enseñanza- aprendizaje y la sana convivencia escolar. La crianza que reciben en los hogares posiblemente no es suficientemente conveniente y esto se refleja en conductas que desfavorecen el desarrollo adecuado de las clases. Por tal motivo, en el proyecto se proponen estrategias pedagógicas que contribuyan a retroalimentar y mejorar significativamente valores de convivencia en los educados, procurando que la ejecución de los mismos sea factible y oportuna.
title: The endoplasmic reticulum (ER) chaperone Sigma receptor 1 in Alzheimer’s disease pathology
Creators: name: Yamoah, Alfred
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Alzheimer’s disease (AD) is characterized histopathologically by extracellular amyloid-β (Aβ) plaques and neurofibrillary tangles composed of abnormal tau protein. Besides these hallmarks certain reactive and inflammatory processes including the activation of the innate immune response[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Conjugacy classes of centralizers in unitary groups
Creators: name: Bhunia, Sushil
name: Singh, Anupam
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: Let $G$ be a group. Two elements $x,y \in G$ are said to be in the same $z$-class if their centralizers in $G$ are conjugate within $G$. Consider $\mathbb F$ a perfect field of characteristic $\neq 2$, which has a non-trivial Galois automorphism of order $2$. Further, suppose that the fixed field $\mathbb F_0$ has the property that it has only finitely many field extensions of any finite degree. In this paper, we prove that the number of $z$-classes in the unitary group over such fields is finite. Further, we count the number of $z$-classes in the finite unitary group $U_n(q)$, and prove that this number is same as that of $GL_n(q)$ when $q>n$.
description: In section 2 Propositions 2.1, 2.2 are added and section 5 is added, final version
title: Εθνικό Σχέδιο Ανάκαμψης και Ανθεκτικότητας "Ελλάδα 2.0"
title: National Recovery and Resillience Plan
titleType: AlternativeTitle
Creators: name: Μητάκη, Ελένη
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Εθνικό νομοσχέδιο
subject: Ανάκαμψη
subject: Ανθεκτικότητα
subject: Ελλάδα
subject: Επενδύσεις
subject: Βιωσιμότητα

description: Πραγματοποιείται η πρώτη διακλαδική έρευνα, όπου μελετιούνται οι διαφορετικές διαστάσεις του Εθνικού Νομοσχεδίου Ανάκαμψης και Ανθεκτικότητας «Ελλάδα 2.0». Σκοπός της παρούσας μεταπτυχιακής διπλωματικής εργασίας, είναι η κατανόηση και ανάπτυξη της υπόθεσης «Ελλάδα 2.0», αναλύοντας ποικίλες παραμέτρους. Με βάση την υπάρχουσα βιβλιογραφία, η σημασιολογική εξέταση του εθνικού σχεδίου ανάκαμψης και ανθεκτικότητας, αναφέρεται ως ένα ολοκληρωμένο σχέδιο που έχει αναπτύξει η Ελλάδα, προκειμένου να ανταπεξέλθει στις οικονομικές και κοινωνικές επιπτώσεις της πανδημίας covid- 19. Αναλυτικότερα, το σχέδιο σκιαγραφεί τις επενδυτικές προτεραιότητες για την Ελλάδα, τα επόμενα χρόνια, με απώτερο σκοπό την οικοδόμηση της ανθεκτικότητας και την στήριξη της ανάκαμψης της χώρας. Πιο συγκεκριμένα, στο πρώτο κεφάλαιο δίνεται έμφαση στη γενική επισκόπηση του Εθνικού Σχεδίου, όπου αναφέρονται οι στόχοι, τα κύρια στοιχεία, καθώς και τι προκλήσεις αντιμετωπίζει η Ελλάδα. Στη συνέχεια, πραγματοποιείται ανάλυση των επενδυτικών προτεραιοτήτων, καθώς και πιθανοί κίνδυνοι ή προκλήσεις που σχετίζονται με την υλοποίηση των επενδύσεων. Στο επόμενο κεφάλαιο, γίνεται αξιολόγηση του αντικτύπου του νομοσχεδίου στην οικονομική ανάπτυξη της Ελλάδας και τη δημιουργία θέσεων εργασίας. Ακολούθως, πραγματοποιείται συγκριτική ανάλυση με άλλα σχέδια ανάκαμψης της Ε.Ε. Το τελευταίο κεφάλαια, εξάγει συμπεράσματα, σχετικά με την αποτελεσματικότητα και τη βιωσιμότητα του Εθνικού νομοσχεδίου «Ελλάδα 2.0».
title: Impact of immunoproteasomes on the pathogenesis of neurodegenerative diseases
Creators: name: Wagner, Lisa K.
name: Gilling, Kate E.
name: Kloetzel, Peter M.
name: Krüger, Elke
name: Prokop, Stefan
name: Heppner, Frank L.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: The ubiquitin-proteasome-system (UPS) plays a central role in clearance of misfolded and oxidant-damaged proteins, which comprise a hallmark of many neurodegenerative diseases. Immunoproteasomes (iP) represent a specialized type of proteasomes, which is induced upon stimulation with proinflammatory [for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Controlled opacity in a class of nonlinear dielectric media
Creators: name: Bittencourt, Eduardo
name: Camargo, Guilherme
name: De Lorenci, Vitorio A.
name: Klippert, Renato
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Motivated by new technologies for designing and tailoring metamaterials, we seek properties for certain classes of nonlinear optical materials that allow room for a reversibly controlled opacity-to-transparency phase transition through the application of external electromagnetic fields. We examine some mathematically simple models for the dielectric parameters of the medium and compute the relevant geometric quantities that describe the speed and polarization of light rays.
description: 22 pages, 5 figures, this matches the published version
Integrative Approach of Virtual Screening, Synthesis, and Cytotoxicity Evaluation Towards Inhibition of Breast Cancer Targeting G Protein-coupled Estrogen Receptor 1 (GPER1)
Creators: name: KHAN, SHAFI ULLAH
Publisher: name: Monash University
Year: 2021
Subjects: Medicinal and biomolecular chemistry not elsewhere classified
Pharmaceutical sciences
Computational chemistry

description: G protein-coupled estrogen receptor-1 (GPER1) has been proposed as a new therapeutic target in triple-negative breast cancer and tamoxifen resistance cancer. Due to the lack of the crystal structure of GPER1, sequential ligand-based and structure-based screening approaches were used to identify new potential GPER1 modulators. For prospective validation, a new, efficient, simple, and one-pot synthesis was developed to synthesise fifty (50) different compounds. Evaluation of their biological activity revealed some new compounds possessing specific anticancer activity. Five top hits compounds, SK0, SK0P, SK-29, SK-37 and SK-39 were identified as a new GPER1 modulators that need further investigations in breast cancer treatment.
Relaxing door-to-door matching reduces passenger waiting times: a workflow for the analysis of driver GPS traces in a stochastic carpooling service
Creators: name: Papoutsis, Panayotis
name: Fennia, Safa
name: Bridon, Constant
name: Duong, Tarn
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Carpooling has the potential to transform itself into a mass transportation mode by abandoning its adherence to deterministic passenger-driver matching for door-to-door journeys, and by adopting instead stochastic matching on a network of fixed meeting points. Stochastic matching is where a passenger sends out a carpooling request at a meeting point, and then waits for the arrival of a self-selected driver who is already travelling to the requested meeting point. Crucially there is no centrally dispatched driver. Moreover, the carpooling is assured only between the meeting points, so the onus is on the passengers to travel to/from them by their own means. Thus the success of a stochastic carpooling service relies on the convergence, with minimal perturbation to their existing travel patterns, to the meeting points which are highly frequented by both passengers and drivers. Due to the innovative nature of stochastic carpooling, existing off-the-shelf workflows are largely insufficient for this purpose. To fill the gap in the market, we introduce a novel workflow, comprising of a combination of data science and GIS (Geographic Information Systems), to analyse driver GPS traces. We implement it for an operational stochastic carpooling service in south-eastern France, and we demonstrate that relaxing door-to-door matching reduces passenger waiting times. Our workflow provides additional key operational indicators, namely the driver flow maps, the driver flow temporal profiles and the driver participation rates.
Evaluación de daño renal temprano y establecido en niños con anemia de células falciformes en el hospital Infantil Napoleón Franco Pareja de Cartagena (Colombia) durante 2013
Creators: name: Castillo Garrido, Beatriz Candelaria
Publisher: name: Universidad de Cartagena
Year: 2014
Subjects: Anemia de células falciformes
Enfermedades renales
Nefrología Pediátrica
Insuficiencia renal en niños

description: Tesis (Especialista en Pediatría). -- Universidad de Cartagena, Facultad de Medicina. Departamento Pediatría, 2014
description: El aumento de la esperanza de vida de los pacientes con Anemia de Células Falciformes (ACF) ha determinado la aparición de complicaciones crónicas en diversos órganos. La disminución de la función renal en los individuos con dicha enfermedad afecta su sobrevida, por lo tanto, detectar el daño renal temprano asociado con esta hemoglobinopatía es fundamental en el seguimiento de estos pacientes durante la niñez. Objetivos: Estimar la frecuencia en que son
An In-Depth Investigation of the Performance Characteristics of Hyperledger Fabric
Creators: name: Guggenberger, Tobias
name: Sedlmeir, Johannes
name: Fridgen, Gilbert
name: Luckow, André
Publisher: name: arXiv
Year: 2021
Subjects: subject: Performance (cs.PF)
subject: Cryptography and Security (cs.CR)
subject: Databases (cs.DB)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: H.4; J.1

description: Private permissioned blockchains are deployed in ever greater numbers to facilitate cross-organizational processes in various industries, particularly in supply chain management. One popular example of this trend is Hyperledger Fabric. Compared to public permissionless blockchains, it promises improved performance and provides certain features that address key requirements of enterprises. However, also permissioned blockchains are still not as scalable as centralized systems, and due to the scarcity of theoretical results and empirical data, their real-world performance cannot be predicted with the necessary precision. We intend to address this issue by conducting an in-depth performance analysis of Hyperledger Fabric. The paper presents a detailed compilation of various performance characteristics using an enhanced version of the Distributed Ledger Performance Scan (DLPS). Researchers and practitioners alike can use the various performance properties identified and discussed as guidelines to better configure and implement their Hyperledger Fabric network. Likewise, they are encouraged to use the DLPS framework to conduct their measurements.
title: Effects of Trem2 deficiency on AD-like pathology
Creators: name: Eede, Pascale
name: Miller, Kelly R.
name: Nilsson, K. Peter
name: Heppner, Frank L.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Genome-wide association studies have recently identified variations in more than 20 loci that contribute to risk of sporadic Alzheimer’s disease (AD), including a novel variant in the gene encoding the triggering receptor expressed on myeloid cells 2 (TREM2), which triples the risk of AD. TREM2[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Feedback-based quantum optimization
Creators: name: Magann, Alicia B.
name: Rudinger, Kenneth M.
name: Grace, Matthew D.
name: Sarovar, Mohan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is hoped that quantum computers will offer advantages over classical computers for combinatorial optimization. Here, we introduce a feedback-based strategy for quantum optimization, where the results of qubit measurements are used to constructively assign values to quantum circuit parameters. We show that this procedure results in an estimate of the combinatorial optimization problem solution that improves monotonically with the depth of the quantum circuit. Importantly, the measurement-based feedback enables approximate solutions to the combinatorial optimization problem without the need for any classical optimization effort, as would be required for the quantum approximate optimization algorithm (QAOA). We experimentally demonstrate this feedback-based protocol on a superconducting quantum processor for the graph-partitioning problem MaxCut, and present a series of numerical analyses that further investigate the protocol's performance.
Geometric estimates from spanning surfaces
Creators: name: Burton, Stephan D.
name: Kalfagianni, Efstratia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We derive bounds on the length of the meridian and the cusp volume of hyperbolic knots in terms of the topology of essential surfaces spanned by the knot. We provide an algorithmically checkable criterion that guarantees that the meridian length of a hyperbolic knot is below a given bound. As applications we find knot diagrammatic upper bounds on the meridian length and the cusp volume of hyperbolic adequate knots and we obtain new large families of knots with meridian lengths bounded above by four. We also discuss applications of our results to Dehn surgery.
description: 18 pages; 4 Figures; To appear in the Bulletin of London Math. Society
Estudio técnico-económico de los sistemas combinados sismoresistentes
Creators: name: Padilla Lopez, Giancarlos
name: Porto Viñas, John Jairo
name: Merlano Rivera, Antonio Maria (Director)
Publisher: name: Universidad de Cartagena
Year: 2001
Subjects: Sismología
Dinámica

description: Tesis (Ingeniero Civil). - - Universidad de Cartagena. Facultad de Ciencias E Ingeniería. Programa de Ingeniería Civil. 2001.
description: El presente estudio tiene por objeto analizar comparativamente el comportamiento de la deriva en sistemas combinados frente a las cargas horizontales en la ciudad de cartagena (zonas de amenazas sísmica baja), determinando el efecto de los muros estructurales como solución para reducir el efecto de desplazamiento.
Multipolar Modeling of Spatially Dispersive Metasurfaces
Creators: name: Achouri, Karim
name: Martin, Olivier J. F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: There is today a growing need to accurately model the angular scattering response of metasurfaces for optical analog processing applications. However, the current metasurface modeling techniques are not well suited for such a task since they are limited to small angular spectrum transformations, as shall be demonstrated. The goal of this work is to overcome this limitation by improving the modeling accuracy of these techniques and, specifically, to provide a better description of the angular response of metasurfaces. This is achieved by extending the current methods, which are restricted to dipolar responses and weak spatially dispersive effects, so as to include quadrupolar responses and higher-order spatially dispersive components. The accuracy of the newly derived multipolar model is demonstrated by predicting the angular scattering of a dielectric metasurface. This results in a modeling accuracy that is at least two times better than the standard dipolar model.
Eruption Pattern of Third Molars in Orthodontic Patients Treated with First Permanent Molar Extraction: A Longitudinal Retrospective Evaluation
Creators: name: Langer, Lisa J.
name: Pandis, Nikolaos
name: Mang De La Rosa, Maria R.
name: Jost-Brinkmann, Paul-Georg
name: Bartzela, Theodosia N.
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2023
Subjects: subject: first permanent molars
subject: extraction therapy
subject: orthodontics
subject: third molars
subject: eruption prognosis
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: The aim of this study was to evaluate angular and positional changes in the second (M2) and third molars (M3) of orthodontically treated patients undergoing a first molar (M1) extraction. A retrospective longitudinal study with a sample of 152 pre- and post-treatment panoramic radiographs was conducted. Thirty-nine patients (51.3%) were orthodontically treated with M1 extraction and thirty-seven (48.7%) were treated without extraction. Angulations of M2 and M3 relative to the infraorbital (IOP) and the palatal planes (PP) were measured and compared between the groups before orthodontic treatment (T1) and after the completion of orthodontic space closure (T2). The prognosis of M3 eruptions was evaluated by assessing their horizontal and vertical position (inclination) using different classification systems. The angular (p < 0.001) and inclination improvement (p < 0.01) of the maxillary M3 was significant for the M1 extraction group. The mandibular M3 inclination significantly improved (p < 0.01), whereas the groups' angulation and vertical position were not significantly different. These findings suggest that extraction therapy has a favorable effect on the maxillary M2 and M3 angulation, but not on the mandibular. M1 extraction showed a signi- ficant effect on the horizontal position of M3 and thus may improve the eruption space and prognosis.
Assessment of Project Identification and Selection Practice of Ethiopian Sugar Corporation
Creators: name: Dagne, Sewagegnehu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Sugar projects are one of the biggest projects in the Ethiopia history taking more than 4 billion dollars, which is equal with the Ethiopian renascence dam. However, after taking this much capital and 8 years of construction the projects are still lagging far behind the targeted goal of solving the sugar shortage of the country and becoming a source of foreign currency earning. Taking these problems of sugar projects in mind, the goal of this research was to investigate the initial phases of the projects which is how the projects were identified and selected and if they followed the appropriated phases before the implementation were began. The research targeted staffs of the sugar corporation and the projects manager who are directly related with the projects overall activity. The research is done from the data collected from 30 management level staffs of Sugar Corporation and finds out that the problems of the projects begin from the blind move of the corporation towards project implementation without effective preparation and appraisal. This lack of preparation then accompanied by largeness and over ambitiousness of the projects time and performance targets took the whole project in to bust. When selecting the projects they lacked minds to predict the potential risks going to happen. In addition, the feasibility study of the projects was for formality only, which evolved vicious circle of problems. Therefore, for Sugar Corporation and other companies this should be the best course for their future project responsibilities, they should note that skipping the project identification, selection processes to save time is not really saving time rather it is creating a gap for potential project implementation delays, and cost overran.
What Does DALL-E 2 Know About Radiology?
Creators: name: Adams, Lisa C
name: Busch, Felix
name: Truhn, Daniel
name: Makowski, Marcus R
name: Aerts, Hugo J W L
name: Bressem, Keno K
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2023
Subjects: subject: DALL-E
subject: creating images from text
subject: image creation
subject: image generation
subject: transformer language model
subject: machine learning
subject: generative model
subject: radiology
subject: x-ray
subject: artificial intelligence
subject: medical imaging
subject: text-to-image
subject: diagnostic imaging
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Generative models, such as DALL-E 2 (OpenAI), could represent promising future tools for image generation, augmentation, and manipulation for artificial intelligence research in radiology, provided that these models have sufficient medical domain knowledge. Herein, we show that DALL-E 2 has learned relevant representations of x-ray images, with promising capabilities in terms of zero-shot text-to-image generation of new images, the continuation of an image beyond its original boundaries, and the removal of elements; however, its capabilities for the generation of images with pathological abnormalities (eg, tumors, fractures, and inflammation) or computed tomography, magnetic resonance imaging, or ultrasound images are still limited. The use of generative models for augmenting and generating radiological data thus seems feasible, even if the further fine-tuning and adaptation of these models to their respective domains are required first.
Parameter spaces for algebraic equivalence
Creators: name: Achter, Jeff
name: Casalaina-Martin, Sebastian
name: Vial, Charles
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14C25, 14C05, 14C15, 14G27, 14K99

description: A cycle is algebraically trivial if it can be exhibited as the difference of two fibers in a family of cycles parameterized by a smooth scheme. Over an algebraically closed field, it is a result of Weil that it suffices to consider families of cycles parameterized by curves, or by abelian varieties. In this paper, we extend these results to arbitrary base fields. The strengthening of these results turns out to be a key step in our work elsewhere extending Murre's results on algebraic representatives for varieties over algebraically closed fields to arbitrary perfect fields.
description: Updated the numbering of sections to match the published version. 20 pages
Análisis de la cadena logística de la sociedad portuaria regional de Cartagena ( S.P.R.C. ) : Un enfoque de simulación
Creators: name: Domínguez Indaburo, Carlos Enrique
name: Velasco Escalona, Aurora Isabel
Publisher: name: Universidad de Cartagena
Year: 2004
Subjects: control de producción
logística ( administración)

description: Tesis ( Administrador Industrial ) -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administarción Industrial, 2004
description: En una economía globalizada, el crecimiento del PIB en cada nación refleja su nivel de competitividad en los mercados mundiales. Este nuevo esquema de negocios de globalización, apertura económica y de mercados ha presionado a todas las empresas de una u otra forma a realizar cambios en su gestión administrativa y operativa. Con los nuevos y trascendentales cambios de hoy en día sólo sobrevivirán aquellas empresas que sean capaces de adaptarse a ellos. En un mercado cada vez más globalizado y competitivo donde el tiempo y los costos determinan en gran medida el éxito de una empresa, la logística se convierte en una herramienta esencial para planificar eficazmente la operación de un puerto, con objeto de incrementar su productividad, ofrecer respuestas eficientes al consumidor y alcanzar unos buenos resultados en la gestión portuaria. De unos diez años hacia acá, la función logística empresarial ha tomado fuerza debido a que los mercados se han vuelto más exigentes, la integración y la globalización son un hecho, las firmas tienen que competir con empresas de todo el mundo y deben atender de la mejor manera a todos y cada uno de los clientes, además, la aparición de nuevas tecnologías de información ha traído como consecuencia menores tiempos y costos de transacción, esto ha obligado a las empresas a tomar más en serio la gestión logística si es que quieren seguir siendo competitivas.
Critical Factors Affecting The Successful Implementation Of Enterprise Resource Planning HRM System In Commercial Bank Of Ethiopia: Employees Perspective
Creators: name: Lemma, Biruk
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The purpose of this study was to identify factors affecting the successful implementation of ERP-HRM system in Commercial Bank of Ethiopia (CBE) and to analyze the implementation of ERP-HRM system from employee's perspective specifically; it tries to identify the correlation between ERP-HRM system implementation and hypothesized factors. The study was carried out in the banks western Addis Ababa district. Clerical and Managerial staffs who have access to the banks Oracle HRM system were included in the sample. Systematic random sampling method was used to select 343 employees from 2429 total employees. Both descriptive and inferential statistical techniques were used to analyze the data. A spearman correlation analysis was conducted to test how well the selected variables are related with ERP-HRM system implementation from employee's perspective. The findings highlight that according to employee's perception of the existing implementation of ERP-HRM system in the bank, factors such as Top management commitment, communication, training and education about the system, employee's involvement in the designing of the system and the inherent risk management of the project was found to be critical for successful implementation of the project. The researcher recommends that the Top management of the bank must also be actively involved in the project implementation stage and monitor the performance of the implementation team. Training and education regarding the system and regular and continuous communication about the system and updates to employees of the bank need to be addressed by the bank. The existing level of training and education regarding the system was deemed to be insignificant by employees.
Magnetic Tilting in Nematic Liquid Crystals driven by Self-Assembly
Creators: name: Hähsler, Martin
name: Nádasi, Hajnalka
name: Feneberg, Martin
name: Marino, Sebastian
name: Giesselmann, Frank
name: Behrens, Silke
name: Eremin, Alexey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Self-assembly is one of the crucial mechanisms allowing to design multifunctional materials. Soft hybrid materials contain components of different nature and exhibit competitive interactions which drive self-organisation into structures of a particular function. Here we demonstrate a novel type of a magnetic hybrid material where the molecular tilt can be manipulated through a delicate balance between the topologically-assisted colloidal self-assembly of \rev{magnetic nanoparticles} and the anisotropic molecular interactions in a liquid crystal matrix.
Sub-Nyquist SAR via Fourier Domain Range Doppler Processing
Creators: name: Aberman, Kfir
name: Eldar, Yonina C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Conventional Synthetic Aperture Radar (SAR) systems are limited in their ability to satisfy the increasing requirement for improved spatial resolution and wider coverage. The demand for high resolution requires high sampling rates, while coverage is limited by the pulse repetition frequency. Consequently, sampling rate reduction is of high practical value in SAR imaging. In this paper, we introduce a new algorithm, equivalent to the well-known Range-Doppler method, to process SAR data using the Fourier series coefficients of the raw signals. We then demonstrate how to exploit the algorithm features to reduce sampling rate in both range and azimuth axes and process the signals at sub-Nyquist rates, by using compressed sensing (CS) tools. In particular, we demonstrate recovery of an image using only a portion of the received signal's bandwidth and also while dropping a large percentage of the transmitted pulses. The complementary pulses may be used to capture other scenes within the same coherent processing interval. In addition, we propose exploiting the ability to reconstruct the image from narrow bands in order to dynamically adapt the transmitted waveform energy to vacant spectral bands, paving the way to cognitive SAR. The proposed recovery algorithms form a new CS-SAR imaging method that can be applied to high-resolution SAR data acquired at sub-Nyquist rates in range and azimuth. The performance of our method is assessed using simulated and real data sets. Finally, our approach is implemented in hardware using a previously suggested Xampling radar prototype.
description: Submitted to IEEE transactions on geoscience and remote sensing
Procesos sociales generados desde el área de salud ocupacional y bienestar laboral por la trabajadora social en la empresa Greif Colombia S.A.
Creators: name: Torres Montes, Dalinis
Publisher: name: Universidad de Cartagena
Year: 2008
Subjects: subject: Trabajo social - Casos
subject: Salud ocupacional y seguridad social
subject: Programas de salud ocupacional

description: El informe se convierte en una evidencia del proceso práctico realizado en la empresa por la trabajadora social en formación, el cual le permite a la empresa evaluarse e implementar mejoras necesarias, a través de las conclusiones, recomendaciones y resultados del análisis de las acciones sociales desarrolladas desde el programa de salud ocupacional y bienestar laboral contempladas en el informe. No obstante, a través de este informe se pretende suministrar elementos que contribuyan al fortalecimiento del quehacer profesional en el campo empresarial con el fin que sirva de soporte y/o referencia para aquellas compañeras y compañeros del programa de trabajo social. Para la elaboración de este informe se hizo una revisión documental de la temática y se consultaron los trabajos que recopilan las experiencias de las prácticas anteriores, se realizaron entrevistas, sondeos de opiniones, fueron algunas técnicas de recolección de información que se utilizaron.
ALMA View of the Galactic Center Mini-spiral: Ionized Gas Flows around Sagittarius A*
Creators: name: Tsuboi, Masato
name: Kitamura, Yoshimi
name: Uehara, Kenta
name: Miyawaki, Ryosuke
name: Tsutsumi, Takahiro
name: Miyazaki, Atsushi
name: Miyoshi, Makoto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have performed the observation of the "Galactic Center Mini-spiral(GCMS)" in H42alpha recombination line as a part of the first large-scale mosaic observation in the Sagittarius A complex using Atacama Millimeter/sub-millimeter Array (ALMA). We revealed the kinematics of the ionized gas streamers of the GCMS. We found that the ionized gas streamers of the Northern Arm(NA) and Eastern Arm(EA) in their outer regions somewhat deviate from the Keplerian orbits which were derived previously from the trajectories in the inner regions. In addition, we found that the streamer corresponding to the Bar of the GCMS has a Keplerian orbit with an eccentricity of e~0.8, which is independent from the Keplerian orbits of the other streamers of the GCMS. We estimated the LTE electron temperature and electron density in the ionized gas streamers. We confirmed the previously claimed tendency that the electron temperatures increase toward Sgr A*. We found that the electron density in the NA and EA also increases with approaching Sgr A* without the lateral expansion of the gas streamers. This suggests that there is some external pressure around the GCMS. The ambient ionized gas may cause the confinement and/or the perturbation for the orbits. There is a good positional correlation between the protostar candidates detected by JVLA at 34 GHz and the ionized gas streamer, Northeastern Arm, newly found by our H42alpha recombination line observation. This suggests that the candidates had formed in the streamer and they were brought to near Sgr A* as the streamer falls.
description: 35 pages, 12 figures, Accepted for publication in ApJ
Missed Radiological Diagnosis of Otosclerosis in High-Resolution Computed Tomography of the Temporal Bone—Retrospective Analysis of Imaging, Radiological Reports, and Request Forms
Creators: name: Bassiouni, Mohamed
name: Bauknecht, Hans-Christian
name: Muench, Gloria
name: Olze, Heidi
name: Pohlan, Julian
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2023
Subjects: subject: otosclerosis
subject: diagnostic imaging
subject: computed tomography
subject: hearing loss
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Objectives: Several studies reported low detection rates of otosclerosis in high-resolution computed tomography (HRCT), especially when the scans were reviewed by non-specialized general radiologists. In the present study, we conducted a retrospective review of the detection of otosclerosis in HRCT by general radiologists and the impact of inadequately filled radiological request forms on the detection rate. Methods: Retrospective analysis of hospital records, HRCT reports, and radiological referral notes of 40 patients who underwent stapedotomy surgery for otosclerosis. HRCT imaging data sets were retrospectively reviewed by a blinded experienced neuroradiologist, whose reading served as the gold standard. Results: General radiologists reading HRCT scans had an overall detection rate of otosclerosis of 36.1% in this cohort (13 of 36 available HRCT reports). The neuroradiologist had a much higher detection rate of 82.5% (33 of 40 cases). Interobserver agreement between the general radiologists and the subspecialist neuroradiologist was poor (Cohen's kappa kappa = 0.26). General radiologists missed the diagnosis in 15 of the 33 CT-positive scans, corresponding to a missed diagnosis rate of 45.4%. There was a highly significant association between a missed diagnosis and the lack of an explicitly mentioned clinical suspicion of otosclerosis in the request forms (Pearson's chi-squared test, p < 0.005). Conclusion: The diagnosis of otosclerosis is frequently missed by radiologists on HRCT scans of the temporal bone in a clinical setting. Possible reasons include a relative lack of experience of general radiologists with temporal bone imaging as well as the failure of clinicians to unambiguously communicate their suspicion of otosclerosis.
Hecke operators acting on optimal embeddings in indefinite quaternion algebras
Creators: name: Rickards, James
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11R52 (Primary) 11F11, 11Y40, 16H05 (Secondary)

description: We explore a natural action of Hecke operators acting on formal sums of optimal embeddings of real quadratic orders into Eichler orders. By associating an optimal embedding to its root geodesic on the corresponding Shimura curve, we can consider the signed intersection number of pairs of embeddings. Using the Hecke operators and the intersection pairing, we construct a generating series that is demonstrated to be a classical modular form of weight two.
description: 18 pages. Significant rewrite from v1 (29pgs -> 18pgs): removed unnecessary material, streamlined the exposition and various proofs, and updated some notation
Migraine and Hormonal Contraception in Gynecological Outpatient Care—Cross-Sectional Study among Practicing Gynecologists in Germany
Creators: name: Fitzek, Mira P.
name: Storch, Elisabeth
name: Overeem, Lucas H.
name: Kull, Pia
name: Terhart, Maria
name: Lange, Kristin S.
name: Reuter, Uwe
name: Raffaelli, Bianca
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2023
Subjects: subject: migraine
subject: migraine aura
subject: contraception
subject: women's health
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Hormonal contraception (HC) can influence the migraine burden and should be considered in the comprehensive management of women with migraine. In this study, we aim to investigate the influence of migraine and migraine aura on the prescribing behavior of combined oral contraception (COC) and progestogen monotherapy (PM) in gynecological outpatient care. From October 2021 to March 2022, we performed an observational, cross-sectional study using a self-administered online-based survey. The questionnaire was distributed by mail and e-mail among 11,834 practicing gynecologists in Germany using the publicly available contact information. A total of 851 gynecologists responded to the questionnaire, of whom 12% never prescribe COC in the presence of migraine. Further 75% prescribe COC depending on the presence of limiting factors such as cardiovascular risk factors and comorbidities. When deciding to start PM, migraine appears to be less relevant, as 82% prescribe PM without restrictions. In the presence of aura, 90% of gynecologists do not prescribe COC at all, while PM is prescribed in 53% without restrictions. Almost all gynecologists reported to be actively involved in migraine therapy by having already initiated (80%), discontinued (96%), or changed (99%) HC due to migraine. Our results reveal that participating gynecologists actively consider migraine and migraine aura before and while prescribing HC. Gynecologists appear cautious in prescribing HC in patients with migraine aura.
Acylindrical Hyperbolicity of Out($W_n$)
Creators: name: Healy, Brendan Burns
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We prove that the group of outer automorphisms of the free Coxeter group $W_n$ is acylindrically hyperbolic in the sense of Osin. As an application, we observe that any CAT(0) space admitting a geometric action by Out($W_n$) must contain a rank-one geodesic. The theorem proceeds from expanding on a well-known relationship between Out($W_n$) and the outer automorphism group of free groups.