cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Erzeugung von Bandscheibenvorfällen an Bandscheibenpräparaten unter komplexer Belastung in einer dynamischen 6DOF Prüfmaschine
Creators: name: Wilke, Hans-Joachim
name: Berger-Roscher, Nikolaus
name: Maile, Sebastian
name: Rasche, Volker
name: Kienle, Annette
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Bandscheibenvorfall
subject: Prolaps
subject: Biomechanik
subject: Bandscheibenbelastungssimulator
subject: komplexe Belastung
subject: 11
subject: 7 T
subject: MRT
subject: 610 Medical sciences; Medicine

description: Fragestellung: Die Ursache von Bandscheibenvorfällen ist bisher noch unzureichend verstanden. Es wird angenommen, dass schweres Heben und extreme Körperhaltungen im inneren Anulus kleine Läsionen verursachen. Derartige Läsionen akkumulieren sich über die Jahre bis die Struktur[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Factors Affecting Employees' Engagement: The Case Of Selected Private Banks In Addis Ababa
Creators: name: Nigusse, Segenet
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The study was conducted to examine what factors influence employees' engagement in three selected private banks (Abyssinia, Buna, and Enat banks). The total number of respondents participated in the study were 252 out of which 141, 71 and 40 were taken from Abyssinia, Buna and Enate bank, respectively. Descriptive and multiple regression analysis were used to analyze the data. The findings of the study revealed that job chararacterstics, reward and recognition, organizational justice and perceived organizational support were all positively and significantly correlated with employees' engagement. The multiple regression result indicated that job characteristics, reward and recognition and perceived organizational support were the factors which had a statistically significant and positively effect on employees' engagement whereas organizational justice was the factor with insignificant effect on employees' engagement. Job characteristics was the most contributing factor in predicting employees' engagement followed by reward and recognition and perceived organizational support in their respective order. Generally, based on the findings of this study, it can be concluded that the banks which were included in this study should focus on the attributes of job characteristics, reward and recognition and perceived organizational support which can increase the employees' engagement. Hence, managers should provide a variety of jobs that are challenging and should use employees' skills, implement proper reward and recognitions systems and provide with the appropriate support because employee who perceive higher organizational support are more likely to respond with greater levels of engagement in their job and in the organization
Análisis fiscal y presupuestal del municipio de Pueblo Nuevo Córdoba 1980 - 1986
Creators: name: Ochoa Velez, Alfredo
name: Pérez Peralta, Roger S
Publisher: name: Universidad de Cartagena
Year: 1988
Subjects: Presupuesto municipal - Pueblo Nuevo - Córdoba, (1980 - 1986)
Impuesto - Pueblo Nuevo - Córdoba

description: Tesis (Administrador de Empresas). -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas. 1988
description: El presente estudio tiene por objeto estudiar la estructura del sistema fiscal y presupuestal del municipio de Pueblo Nuevo, de tal manera que los funcionarios de la administración pública tenga una herramienta que les permita de una forma técnica la elaboración y la ejecución del presupuesto para que así cumplan con sus funciones administrativas de manera eficiente.
Self-interacting dipolar boson stars and their dynamics
Creators: name: Ildefonso, Pedro
name: Zilhão, Miguel
name: Herdeiro, Carlos
name: Radu, Eugen
name: Santos, Nuno M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct and dynamically evolve dipolar, self-interacting scalar boson stars in a model with sextic (+ quartic) self-interactions. The domain of existence of such dipolar $Q$-stars has a similar structure to that of the fundamental monopolar stars of the same model. For the latter it is structured in a Newtonian plus a relativistic branch, wherein perturbatively stable solutions exist, connected by a middle unstable branch. Our evolutions support similar dynamical properties of the dipolar $Q$-stars that: 1) in the Newtonian and relativistic branches are dynamically robust over time scales longer than those for which dipolar stars without self-interactions are seen to decay; 2) in the middle branch migrate to either the Newtonian or the relativistic branch; 3) beyond the relativistic branch decay to black holes. Overall, these results strengthen the observation, seen in other contexts, that self-interactions can mitigate dynamical instabilities of scalar boson star models.
description: 13 pages, 14 figures; movies of the numerical simulations reported can be found in http://gravitation.web.ua.pt/index.php/node/4488
Developments towards in vivo particle image velocimetry
Creators: name: Jamison, Robert Aidan
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: This thesis provides a brief introduction into the field of haemodynamics, a review a biological velocimetry, and presents four publications in the field of biological particle image velocimetry (PIV), divided into two main chapters; in vitro and ex vivo X-ray velocimetry measurements, and in vivo velocity measurements of the developing heart. The in vitro and ex vivo X-ray velocimetry measurements develop the X-ray velocimetry technique to enable measurement of physiological flow rates in vitro, and enable measurement of ex vivo flows, respectively. The in vitro investigation quantified flow rates that were two orders of magnitude greater than had previously been measured using the X-ray velocimetry technique. The ex vivo investigation added the complexity of living tissue, further demonstrating the capability of X-ray velocimetry to acquire measurements in flows that replicate true in vivo flow. This was the first use of X-ray velocimetry to study the haemodynamics of blood flow under physiologically relevant conditions. The in vivo velocity measurements of the heart develop two new methods that have led to more accurate calculation of shear stress in vivo. The methods relate to removing heart wall artefacts that are introduced during bright field imaging, which interfere with accurate velocity measurement, and identifying the internal wall of the heart, which enables calculation of wall shear stress and is shown to correct a severe (3-fold) under-estimation in the PIV measurements. The identification of the internal wall of the heart, from the images that are also used for PIV, is shown to provide convenient and accurate calculation of the wall shear stress, without the need to breed transgenic fluorescent strains.
title: 18-Jahres-Nachuntersuchung nach offener Rotatorenmanschettenrekonstruktion: Langzeitverlauf der Gegenseite
Creators: name: Hättich, Annika
name: Kühn, Philip
name: Kölbel, Reinhard
name: Hedtmann, Achim
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Fragestellung: Es ist bereits bekannt, dass das Alter ein bekannter Einflussfaktor für die Entstehen einer Rotatorenmanschettenruptur ist. Unsere Fragestellung ist nun, ob eine bekannte SSP-Ruptur der einen Seite eine Prädisposition für einen Defekt der Gegenseite darstellt und wie sich[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Estudio socioeconómico del Municipio de Maria La Baja
Creators: name: Acevedo Marimon, Ciro Del Socorro
name: Garcia Florez, Fabiola Rosa
Publisher: name: Universidad de Cartagena
Year: 1989
Subjects: Maria La Baja (Bolívar) - Colombia - Condiciones socioeconómicas
Maria La Baja (Bolivar) - Colombia - Política y gobierno

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1989.
description: El presente estudio tiene por objeto conocer la problemática existente en el municipio de maría la baja en el campo económico-social; queremos palpar de cerca cuales son los factores positivos y negativos de la región, tenerlos como base, y a través de un diagnostico de necesidades presentar recomendaciones, que sean tenidas en cuenta por la administración municipal.
Intro to RDM for humanities researchers at KU Leuven
Creators: name: Noppe, Nele
name: Callens, Ninotsjka
Publisher: name: Zenodo
Year: 2023
Subjects: research data management, humanities

description: This presentation introduces the why and how of research data management (RDM) specifically for humanities researchers at KU Leuven. It contains relatable examples of RDM practices, tool recommendations for various kinds of humanities data, a deep dive into data publishing, and much more. Different versions of this presentation were used on the following occasions: 21 March 2023: Introduction to RDM for the Faculty of Theology and Religious Studies (version https://doi.org/10.5281/zenodo.7767053) 20 March 2023: Introduction to RDM for new PhD students at the Faculty of Arts (version https://doi.org/10.5281/zenodo.7767017) Are you a KU Leuven researcher who needs to write a DMP? Check out The hands-on guide to research data management for KU Leuven researchers, students, and research support staff in the humanities and social sciences for explanations of DMP questions and sample DMP answers you can reuse. Even more in-depth advice can be found on KU Leuven's RDM portal. Note on reuse While many parts of the presentation can be used more broadly, some recommendations are only useful in a KU Leuven context. Feel free to adapt the materials as needed. For any questions about RDM or the use of this presentation, contact the KU Leuven RDM helpdesk.
Tracking chains revisited
Creators: name: Wilken, Gunnar
Publisher: name: arXiv
Year: 2016
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03F15

description: The structure ${\cal C}_2:=(1^\infty,\le,\le_1,\le_2)$, introduced and first analyzed in Carlson and Wilken 2012 (APAL), is shown to be elementary recursive. Here, $1^\infty$ denotes the proof-theoretic ordinal of the fragment $Π^1_1$-$\mathrm{CA}_0$ of second order number theory, or equivalently the set theory $\mathrm{KPl}_0$, which axiomatizes limits of models of Kripke-Platek set theory with infinity. The partial orderings $\le_1$ and $\le_2$ denote the relations of $Σ_1$- and $Σ_2$-elementary substructure, respectively. In a subsequent article we will show that the structure ${\cal C}_2$ comprises the core of the structure ${\cal R}_2$ of pure elementary patterns of resemblance of order $2$. In Carlson and Wilken 2012 (APAL) the stage has been set by showing that the least ordinal containing a cover of each pure pattern of order $2$ is $1^\infty$. However, it is not obvious from Carlson and Wilken 2012 (APAL) that ${\cal C}_2$ is an elementary recursive structure. This is shown here through a considerable disentanglement in the description of connectivity components of $\le_1$ and $\le_2$. The key to and starting point of our analysis is the apparatus of ordinal arithmetic developed in Wilken 2007 (APAL) and in Section 5 of Carlson and Wilken 2012 (JSL), which was enhanced in Carlson and Wilken 2012 (APAL) specifically for the analysis of ${\cal C}_2$.
description: The text was edited and aligned with reference [10], Lemma 5.11 was included (moved from [10]), results unchanged. Corrected Def. 5.2 and Section 5.3 on greatest immediate $\le_1$-successors. Updated publication information. arXiv admin note: text overlap with arXiv:1608.08421
title: Validierung eines Algorithmus zur Terminvergabe in einer Gefäßambulanz
title: Validation of an algorithm for an app for appointments in a vascular medicine outpatient clinic
titleType: AlternativeTitle
Creators: name: Woermann, Carolin Christina
Publisher: name: Philipps-Universität Marburg
Year: 2023
Subjects: App
Terminvereinbarung
Ambulanz
outpatient clinic
vascular medicine
Terminvergabe
Abfrage Algorithmus
Gefäßmedizin
Medical sciences Medicine
Medizin
Dringlichkeitseinstufung
appointments

description: Ziel der Arbeit war die Validierung einer App für die Terminvereinbarung in einer gefäßmedizinischen Ambulanz. Für die häufigsten Verdachtsdiagnosen einer gefäßmedizinischen Sprechstunde wurden elf Algorithmen entwickelt und in eine App programmiert. Die Überprüfung der Dringlichkeitseinstufung der Abfrage-Algorithmen im Vergleich mit der Terminfindung durch zwei erfahrene Fachärztinnen ergab, dass die Algorithmen eine sehr hohe Übereinstimmung mit dem Facharztstandard haben und somit als valide angesehen werden können. 
Im Gegensatz zu den beiden Fachärztinnen zeigten die üblicherweise zur Terminvereinbarung eingesetzten medizinischen Fachangestellten eine sehr heterogene Dringlichkeitseinstufung. Auf den klinischen Alltag übertragen bedeutet dies einerseits eine Patientengefährdung bei zu später, andererseits eine Effektivitätsminderung der Sprechstunde bei zu früher Terminvereinbarung. Bei Verwendung der App als Abfragealgorithmus konnte die Terminvergabe nahezu vollständig die Vorgaben der Referenz erreichen. Damit führte sie zu einer sicheren, und konsistenten Terminvergabe, die wissensunabhängig vom Anwender war und zu einer deutlichen Handlungssicherheit beitrug. Darüber hinaus war der Zeitaufwand aufgrund der strukturierten Führung der Patientenabfrage deutlich geringer.
Da sich ein klarer Nutzen für die Terminvereinbarung mit Hilfe der Algorithmen in der App zeigte, ist im nächsten Schritt die Zulassung und Verwendung im klinischen Alltag geplant.
title: Koinzidenz eines Weichgewebssarkoms nach Plattenosteosynthese einer Claviculafraktur
Creators: name: Faulenbach, Miriam
name: Schmidt-Horlohé, Kay
name: Langheinrich, Alexander
name: Hoffmann, Reinhard
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Fragestellung: Das Auftreten von Weichteilsarkomen im Anschluss an Claviculafrakturen ist in der Literatur bisher nicht beschrieben. Generell sind Weichgewebssarkome eine seltene Art maligner Tumoren, die sich v.a. im höheren Alter des weiblichen Geschlechtes bevorzugt an den Extremitäten [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
title: Das Leidmotiv als Leitmotiv. Christliche Bildtradition in fotografischen Ikonen
Creators: name: Liebau, Lena
Publisher: name: Philipps-Universität Marburg
Year: 2024
Subjects: Christentum
Passion
Bild
Photography & photographs
Fotografie, Computerkunst
Ikone
Pressefotografie
Ikonografie
Leid
Ikonologie
Religion
Fotografie
Medienikone
Bildtradition
Medien
Motiv

description: Die Arbeit geht folgenden Thesen nach:
• Schemata, die durch die christliche Bildtradition geprägt wurden, sind im 
Medium der Fotografie (auch abseits religiöser Kontexte) präsent. Damit 
können teilweise auch christliche Bedeutungsdimensionen verbunden 
werden.
• Diese Schemata erscheinen vertraut, generieren erhöhte Aufmerksamkeit 
und nicht selten auch Empathie. 
• Christliche Codes erfahren durch Medienikonen eine Aktualisierung im 
Medium der Fotografie.
• Durch das Anknüpfen an die christliche (Leidens-)Ikonografie wird der 
Ikonisierungsprozess von Bildern begünstigt, teilweise sogar erst 
ermöglicht.
title: Funktionelle Einflüsse des femoralen Offsets nach Duokopfprothesenimplantation bei medialer Schenkelhalsfraktur
Creators: name: Bücking, Benjamin
name: Boese, Christoph
name: Bergmeister, Verena
name: Ruchholtz, Steffen
name: Frink, Michael
name: Lechler, Philipp
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Schenkelhalsfraktur
subject: Duokopfprothese
subject: Hüftbiomechanik
subject: femorales Offset.
subject: 610 Medical sciences; Medicine

description: Fragestellung: Die inadäquate Rekonstruktion des femoralen Offset nach Hüftgelenkstotalendoprothese ist mit einem schlechteren Ergebnis verbunden. Der Einfluss des femoralen Offsets auf das funktionelle Ergebnis nach Duokopfprothesenimplantation bei medialer Schenkelhalsfraktur ist dahingegen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
La empresa puertos de Colombia, su funcionamiento y descentralización
Creators: name: Barrios Rendon, Alberto
name: Barboza Pérez, Victor
Publisher: name: Universidad de Cartagena
Year: 1975
Subjects: Empresa Puertos de Colombia - Funcionamiento y descentralización
Administración pública
Empresa Puertos de Colombia - Descentralización;

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1975
description: El presente trabajo tiene como objetivo, conocer el bosquejo de la evolución y las condiciones actuales de Puertos de Colombia.
Engineering carbon into graphene on metals for corrosion resistance
Creators: name: Tiwari, Abhishek
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Most conventional corrosion protection techniques, namely paints, organic coatings, anodization, metallic coatings and several others have been extensively employed for protection of metals and alloys against environmental degradation, but they are fraught with problems such as thickness, degradation and premature failures, as well as they can change properties of the metal underneath. The use of graphene coating has been explored in very limited research (2011-15) showing potential of graphene as a corrosion protective layer for short durations. Some of these studies show that graphene increases corrosion rather than preventing it for long exposure times because of its defects and poor surface coverage. It is proposed in this study that a possible solution to this problem of hampering corrosion protection ability of graphene due to defective single layer graphene can be overcome by applying multilayer graphene in place of single layer graphene as it is extremely difficult to get defect-free graphene with full surface coverage. A low vacuum CVD reactor for synthesis of graphene on copper and Cu-Ni (75/25) alloy using n-hexane as hydrocarbon source was designed and built in this PhD project. The characterisation of graphene was done using Raman spectroscopy to determine deposition of graphene on copper and Cu-Ni alloy. The performance of graphene coating on corrosion resistance of copper and Cu-Ni alloy in 0.1 M sodium chloride was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The potentiodynamic polarisation and electrochemical impedance spectroscopy showed ~5 times and ~10 times improvement in corrosion resistance of Cu and Cu-Ni alloy due to graphene coating, respectively. The systematic corrosion study using electrochemical impedance spectroscopy on graphene coated copper for different immersion times showed that graphene coating continued to provide improvement in corrosion resistance for long immersion periods (up to 386 h) in 0.1 M NaCl. The graphene coated Cu-Ni alloy also continued to show corrosion resistance for long durations (up to 336 h) of immersion in 0.1 M NaCl.
On the stochastic inventory problem under order capacity constraints
Creators: name: Rossi, Roberto
name: Chen, Zhen
name: Tarim, S. Armagan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We consider the single-item single-stocking location stochastic inventory system under a fixed ordering cost component. A long-standing problem is that of determining the structure of the optimal control policy when this system is subject to order quantity capacity constraints; to date, only partial characterisations of the optimal policy have been discussed. An open question is whether a policy with a single continuous interval over which ordering is prescribed is optimal for this problem. Under the so-called "continuous order property" conjecture, we show that the optimal policy takes the modified multi-$(s,S)$ form. Moreover, we provide a numerical counterexample in which the continuous order property is violated, and hence show that a modified multi-$(s,S)$ policy is not optimal in general. However, in an extensive computational study, we show that instances violating the continuous order property are extremely rare in practice, and that the plans generated by a modified multi-$(s,S)$ policy can therefore be considered, for all practical purposes, optimal. Finally, we show that a modified $(s,S)$ policy also performs well in practice.
description: 30 pages, submitted manuscript
Feb 21 Sunday.
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
title: Biomechanical investigation and clinical application of new external fixation system
Creators: name: Mitkovic, Milorad
name: Milenkovic, Sasa
name: Micic, Ivan
name: Mitkovic, Milan
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: fractures
subject: long bones
subject: external fixation
subject: fracture reduction
subject: biomechanical investigation
subject: 610 Medical sciences; Medicine

description: Objectives: External fixation using pins has usually been referred to as two-dimensional (2D) systems where all pins constituting one cluster of pins are in a single plane. If pins are parallel, as in most conventional external fixation devices, than antero-posterior (AP) and lateral (LL) stability [for full text, please go to the a.m. URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
The Effect Of Performance Appraisal Practice On Employee Performance: The Case Of Goal Ethiopia
Creators: name: G/Egziabher, Trsit
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The main purpose of this study was to assess the "The effect of Performance Appraisal on Employee Performance: the case of GOAL Ethiopia, an International Non-Governmental Organization" in relation to factors like interpersonal relationship, objective setting, rater accuracy and recognition. In order to conduct the study, the research is designed in explanatory way and qualitative as well as quantitative data was collected as a primary and secondary data resources. Secondary data were collected from different articles, books and online sources as well as the organization human resource manual while the primary data were collected using questionnaire and interview. The Questionnaires were distributed to the employees of GOAL Ethiopia who are found about grade four of the organization structure and interview was also conducted with the Senior Administration and HR staff to gain the management's point of view and to make the data more comprehensive. The collected data was summarized and analyzed using explanatory and inferential statistics. The questionnaire was designed on a five-point Likert scale to rate the effect of the factors in to question. The research was analyzed using t-test, correlation and regression analysis by SPSS version 20.0 data analysis software. The results showed that all the factors, rater accuracy being the stronger and major influencer one, are significant in ensuring the effectiveness of employee performance. Thus the researcher recommended that the organization should take these factors into strong consideration in order to ensure the effectiveness of employee performance and achieve the objective of the appraisal
Pattern formation and bifurcation analysis of delay induced fractional-order epidemic spreading on networks
Creators: name: Zhou, Jiaying
name: Ye, Yong
name: Arenas, Alex
name: Gómez, Sergio
name: Zhao, Yi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The spontaneous emergence of ordered structures, known as Turing patterns, in complex networks is a phenomenon that holds potential applications across diverse scientific fields, including biology, chemistry, and physics. Here, we present a novel delayed fractional-order susceptible-infected-recovered-susceptible (SIRS) reaction-diffusion model functioning on a network, which is typically used to simulate disease transmission but can also model rumor propagation in social contexts. Our theoretical analysis establishes the Turing instability resulting from delay, and we support our conclusions through numerical experiments. We identify the unique impacts of delay, average network degree, and diffusion rate on pattern formation. The primary outcomes of our study are: (i) Delays cause system instability, mainly evidenced by periodic temporal fluctuations; (ii) The average network degree produces periodic oscillatory states in uneven spatial distributions; (iii) The combined influence of diffusion rate and delay results in irregular oscillations in both time and space. However, we also find that fractional-order can suppress the formation of spatiotemporal patterns. These findings are crucial for comprehending the impact of network structure on the dynamics of fractional-order systems.
description: 23 pages, 9 figures
Understanding the relationship between morphology and device performance in organic solar cells
Creators: name: Huang, Wenchao
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Due to the rapidly increasing demand for clean energy, harnessing solar energy has been considered to be a promising way to solve the impending energy crisis. Among the various photovoltaic technologies, organic photovoltaics (OPV) are continuing to receive intensive interest with power conversion efficiencies of over 10% demonstrated recently. Solution processed organic solar cells have unique prospects for achieving low-cost energy harvesting via continuous roll-to-roll processing. A key requirement for fabricating high efficiency organic solar cells is the control of the thin-film morphology to facilitate efficient charge separation and collection. The active layer of an OPV device is based on a bulk heterojunction structure, consisting of an interpenetrating network of electron donor and electron acceptor. In this thesis, the application of a combination of synchrotron-based techniques enables a detailed characterization of polymer blend solar cells, providing an understanding of the relationship between the thin-film morphology and device performance. In particular, the effects of different thin-film treatments such as thermal annealing, anti-solvent treatment and the use of solvent additive to tune the blend morphology for optimized device performance are assessed.
Greybody factors for a nonminimally coupled scalar field in BTZ black hole background
Creators: name: Panotopoulos, Grigoris
name: Rincon, Angel
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the present work we study the propagation of a probe nonminimally coupled scalar field in BTZ black hole background. We find analytical expressions for the reflection coefficient, the absorption cross-section, and the decay rate in the strong coupling case, where the nonminimal coupling is larger than its conformal value $ξ_{c}= 1/6$. Our main results are summarized in several figures, in which we show how the behavior of the aforementioned quantities depends on the parameters of the theory. Our findings show that i) the reflection coefficient tends to zero only for a nonminimal coupling $ξ\geq 0.25$, and ii) in the zero angular-momentum case the greybody factor in the low energy regime tends to a finite constant that generically does not coincide with the area of the horizon of the black hole. There is, however, a special case in which this holds.
description: Published version
Eficiencia y productividad en la cobertura de agua potable y saneamiento básico en el Departamento de Bolívar
Creators: name: Salas Barón, Eliana Esther
name: Salcedo Mejía, Fernando
Publisher: name: Universidad de Cartagena
Year: 2014
Subjects: Servicios Publicos Domiciliarios
Abastecimiento de agua potable

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 2014
description: El objetivo de esta investigación busca analizar la eficiencia y los cambios en la productividad de los recursos financieros invertidos para la cobertura de agua potable y saneamiento básico del departamento de Bolívar.
title: Münchner Beiträge zur jüdischen Geschichte und Kultur, Nr. 2 (2009): Das portative Vaterland
title: Das portative Vaterland
titleType: AlternativeTitle
Creators: name: Münchner Beiträge Zur Jüdischen Geschichte Und Kultur
Publisher: name: Münchner Beiträge zur jüdischen Geschichte und Kultur
Year: 2023

description: Mit Beiträgen von Hans Magnus Enzensberger, Rahel E. Feilchenfeldt, Andreas B. Kilcher, Michael Krüger, Thomas Meyer, David B. Ruderman, Ittai J. Tamari, Ernst-Peter Wieckenberg und Reinhard Wittmann
description: Eine Reise nach Speyer und Worms...125-128 Gespräch im Gebirg. Jüdische Begegnungen mit den Alpen...123-124 For God’s Sake: Religion and Politics in the West...119-122 Vater und Sohn, oder über die Anfänge der Jüdischen Studien an der Ludwig-Maximilians-Universität München...107-118 „Es gibt eine Seuche, die Mensch heißt.“...102-106 Ein glücklicher Jude oder ein Glücksrabe...98-101 Wiederfinden...81-97 „Pro captu lectoris habent sua fata libelli“...75-80 „Alles ist umständlich, schon wegen der Sprache, geht langsam …“...59-74 „Volk des Buches“...43-58 Münchens Jüdische Antiquariate – Glanz und Zerstörung...23-42 Buchdruck und jüdische Kultur in der Frühen Neuzeit Europas...8-22
Super Riemann surfaces and fatgraphs
Creators: name: Schwarz, Albert S.
name: Zeitlin, Anton M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Our goal is to describe superconformal structures on super Riemann surfaces (SRS), based on data assigned to a fatgraph. We start from the complex structures on punctured $(1|1)$-supermanifolds, characterizing the corresponding moduli and the deformations using Strebel differentials and certain Čech cocycles for a specific covering, which we reproduce from a fatgraph data, consisting of $U(1)$-graph connection and odd parameters at the vertices. Then we consider dual $(1|1)$-supermanifolds and related superconformal structures for $N=2$ super Riemann surfaces. The superconformal structures $N=1$ SRS are computed as the fixed points of involution on supermoduli space of $N=2$ SRS.
description: v2: 25 pages, minor revisions
Statistical mechanics of stochastic growth phenomena
Creators: name: Alekseev, Oleg
name: Mineev-Weinstein, Mark
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We develop statistical mechanics for stochastic growth processes as applied to Laplacian growth by using its remarkable connection with a random matrix theory. The Laplacian growth equation is obtained from the variation principle and describes adiabatic (quasi-static) thermodynamic processes in the two-dimensional Dyson gas. By using Einstein's theory of thermodynamic fluctuations we consider transitional probabilities between thermodynamic states, which are in a one-to-one correspondence with planar domains. Transitions between these domains are described by the stochastic Laplacian growth equation, while the transitional probabilities coincide with the free-particle propagator on the infinite dimensional complex manifold with the Kähler metric.
description: 6 pages, 1 figure; v2: exposition improved
Determinación de la efectividad antibacteriana de diferentes concentraciones del Hybenx frente a biofilm de periodontitis apical
Creators: name: Garay Lara, Melissa
name: Zarate Severiche, Daniela
Publisher: name: Universidad de Cartagena
Year: 2019
Subjects: Biofilm de periodontitis
Periodontitis

description: Tesis (Odontólogo). -- Universidad de Cartagena. Facultad de Odontología. Departamento de Investigación, 2019
description: Dentro de esta investigación, se busca determinar la efectividad antibacteriana, mediante micro dilución de diferentes concentraciones del HybenX en biofilm endodónticas en pacientes diagnosticados con periodontitis apical
Cosmological effects of the Galileon term in Scalar-Tensor Theories
Creators: name: Ferrari, A. G.
name: Ballardini, M.
name: Finelli, F.
name: Paoletti, D.
name: Mauri, N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the cosmological effects of a Galileon term in scalar-tensor theories of gravity. The subset of scalar-tensor theories considered are characterized by a non-minimal coupling $F(σ) R$, a kinetic term with arbitrary sign $Z (\partial σ)^2$ with $Z = \pm 1$, a potential $V(σ)$, and a Galileon term $G_3(σ, (\partial σ)^2) \square σ$. In addition to the modified dynamics, the Galileon term provides a screening mechanism to potentially reconcile the models with General Relativity predictions inside a Vainshtein radius. Thanks to the Galileon term, the stability conditions, namely ghost and Laplacian instabilities, in the branch with a negative kinetic term ($Z = -1$) are fulfilled for a large volume of the parameter space. Solving numerically the background evolution and linear perturbations, we derive the constraints on the cosmological parameters in presence of a Galileon term for different combination of the cosmic microwave background (CMB) data from Planck, baryon acoustic oscillations (BAO) measurements from BOSS, and supernovae from the Pantheon compilation. We find that the Galileon term alters the dynamics of all the studied cases. For a standard kinetic term ($Z = 1$), we find that Planck data and a compilation of BAO data constrain the Galileon term to small values that allow screening very inefficiently. For a negative kinetic term ($Z = -1$), a Galileon term and a non-zero potential lead to an efficient screening in a physically viable regime of the theory, with a value for the Hubble constant today which alleviates the tension between its CMB and local determinations. For a vanishing potential, the case with $Z=-1$ and the Galileon term driving the late acceleration of the Universe is ruled out by Planck data.
description: 23 pages, 15 figures, 4 tables
Efficient Domain Adaptation of Sentence Embeddings Using Adapters
Creators: name: Schopf, Tim
name: Schneider, Dennis N.
name: Matthes, Florian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.7

description: Sentence embeddings enable us to capture the semantic similarity of short texts. Most sentence embedding models are trained for general semantic textual similarity tasks. Therefore, to use sentence embeddings in a particular domain, the model must be adapted to it in order to achieve good results. Usually, this is done by fine-tuning the entire sentence embedding model for the domain of interest. While this approach yields state-of-the-art results, all of the model's weights are updated during fine-tuning, making this method resource-intensive. Therefore, instead of fine-tuning entire sentence embedding models for each target domain individually, we propose to train lightweight adapters. These domain-specific adapters do not require fine-tuning all underlying sentence embedding model parameters. Instead, we only train a small number of additional parameters while keeping the weights of the underlying sentence embedding model fixed. Training domain-specific adapters allows always using the same base model and only exchanging the domain-specific adapters to adapt sentence embeddings to a specific domain. We show that using adapters for parameter-efficient domain adaptation of sentence embeddings yields competitive performance within 1% of a domain-adapted, entirely fine-tuned sentence embedding model while only training approximately 3.6% of the parameters.
description: Accepted to the 14th International Conference on Recent Advances in Natural Language Processing (RANLP 2023)
The non-Gaussian distribution of galaxies gravitational fields
Creators: name: Stephanovich, V. A.
name: Godłowski, W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We perform a theoretical analysis of the observational dependence between angular momentum of the galaxy clusters and their mass (richness), based on the method introduced in our previous paper. For that we obtain the distribution function of astronomical objects (like galaxies and/or smooth halos of different kinds) gravitational fields due to their tidal interaction. Within the statistical method of Chandrasekhar we are able to show that the distribution function is determined by the form of interaction between objects and for multipole (tidal) interaction it is never Gaussian. Our calculation permits to demonstrate how the alignment of galaxies angular momenta depend on the cluster richness. The specific form of the corresponding dependence is due to assumptions made about cluster morphology. Our approach also predicts the time evolution of stellar objects angular momenta within CDM and $Λ$CDM models. Namely, we have shown that angular momentum of galaxies increases with time.
description: Corrected version. Comparison with observational results and explanations of theoretical method used are added
If You Have Choices, Why Not Choose (and Share) All of Them? A Multiverse Approach to Understanding News Engagement on Social Media
Creators: name: Pipal, Christian
name: Song, Hyunjin
name: Boomgaarden, Hajo G.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Social sciences are facing a crisis of replicability, and concerns about the confidence in quantitative findings have resulted in an increasing interest in open science practices across many fields. In this article we introduce scholars of (digital) journalism studies and communication science to multiverse analysis while addressing the possible reasons of heterogeneity in the findings of research on engagement with news on social media. Using the question of which news article characteristics predict news engagement on social media, this illustration of the multiverse approach shows how different measurement, data processing, and modelling choices lead to divergent conclusions. In particular, we show how the selection of widely used automated text analysis tools and preprocessing steps influence the conclusions drawn from the analysis. We also use this illustration to guide interested scholars through the different steps of doing a multiverse analysis. More broadly, we demonstrate how multiverse analysis can be an open and transparent research approach in a field that is increasingly faced with a wide range of analytical choices.
"Los contratos administrativos"
Creators: name: Mercado Hernández, Alberto L.
Publisher: name: Universidad de Cartagena
Year: 1975
Subjects: Derecho administrativo - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho, 1975
description: Interés en el derecho administrativo y en general el derecho público ya que cada día va evolucionando, y pretender su inmutabilidad es colocarse de espalda a la realidad social entre los fenómenos vitales y las cambiantes relaciones de los titulares del poder con los gobernadores.
title: Modifizierte Skapula-Manipulation zur geschlossenen Reposition der traumatischen dorsalen Schulterluxation
Creators: name: Regauer, Markus
name: Haasters, Florian
name: Böcker, Wolfgang
name: Ockert, Ben
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Dorsale Schulterluxation
subject: Reposition
subject: Skapulamanipulation
subject: 610 Medical sciences; Medicine

description: Fragestellung: Die akute traumatische dorsale Schulterluxation ist mit einer Inzidenz von 1,1 pro 100 000 pro Jahr selten, stellt jedoch einen bedeutenden traumatologischen Notfall dar, welcher eine umgehende Reposition erfordert. Im Gegensatz zur ventralen Schulterluxation existieren nur Einzelfallberichte[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
False Sense of Security: Leveraging XAI to Analyze the Reasoning and True Performance of Context-less DGA Classifiers
Creators: name: Drichel, Arthur
name: Meyer, Ulrike
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The problem of revealing botnet activity through Domain Generation Algorithm (DGA) detection seems to be solved, considering that available deep learning classifiers achieve accuracies of over 99.9%. However, these classifiers provide a false sense of security as they are heavily biased and allow for trivial detection bypass. In this work, we leverage explainable artificial intelligence (XAI) methods to analyze the reasoning of deep learning classifiers and to systematically reveal such biases. We show that eliminating these biases from DGA classifiers considerably deteriorates their performance. Nevertheless we are able to design a context-aware detection system that is free of the identified biases and maintains the detection rate of state-of-the art deep learning classifiers. In this context, we propose a visual analysis system that helps to better understand a classifier's reasoning, thereby increasing trust in and transparency of detection methods and facilitating decision-making.
description: Accepted at The 26th International Symposium on Research in Attacks, Intrusions and Defenses (RAID '23)
Optimal perturbations for nonlinear systems using graph-based optimal transport
Creators: name: Grover, Piyush
name: Elamvazhuthi, Karthik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37A30, 37N35, 37A50

description: We formulate and solve a class of finite-time transport and mixing problems in the set-oriented framework. The aim is to obtain optimal discrete-time perturbations in nonlinear dynamical systems to transport a specified initial measure on the phase space to a final measure in finite time. The measure is propagated under system dynamics in between the perturbations via the associated transfer operator. Each perturbation is described by a deterministic map in the measure space that implements a version of Monge-Kantorovich optimal transport with quadratic cost. Hence, the optimal solution minimizes a sum of quadratic costs on phase space transport due to the perturbations applied at specified times. The action of the transport map is approximated by a continuous pseudo-time flow on a graph, resulting in a tractable convex optimization problem. This problem is solved via state-of-the-art solvers to global optimality. We apply this algorithm to a problem of transport between measures supported on two disjoint almost-invariant sets in a chaotic fluid system, and to a finite-time optimal mixing problem by choosing the final measure to be uniform. In both cases, the optimal perturbations are found to exploit the phase space structures, such as lobe dynamics, leading to efficient global transport. As the time-horizon of the problem is increased, the optimal perturbations become increasingly localized. Hence, by combining the transfer operator approach with ideas from the theory of optimal mass transportation, we obtain a discrete-time graph-based algorithm for optimal transport and mixing in nonlinear systems.
description: With additional numerics. 23 pages, 17 figures. To appear in CNSNS
Dissecting Non-Use of Online News – Systematic Evidence from Combining Tracking and Automated Text Classification
Creators: name: Reiss, Michael V.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: A high proportion of non-users of news is considered a concern for a functioning democracy. However, existing empirical assessments on the share of news avoiders rely exclusively on survey data and the results vary drastically between studies, making it difficult to evaluate the severity of the issue. This study relies on tracking data of Swiss Internet users and applies and discusses two computational methods, identifying news at the domain and article level, to realistically assess the extent of non-users of online news. Results indicate that at least 14.2% of Internet users do not use news online. Furthermore, this study suggests that identifying news use solely based on tracking data at the domain level is distorted by a faux news effect, i.e., non-news use on news domains, and an invisible news effect, i.e., news use on small and unknown news domains. The parallel use of tracking data and supervised text classification allows to dissect and discuss these effects systematically. Similarly, it is found that not accounting for news use via apps overestimates the extent of non-use of online news. The findings provide valuable insights for future applications of these methods in similar contexts.
Robustness of QMA against witness noise
Creators: name: Dziemba, Friederike Anna
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using the tool of concatenated stabilizer coding, we prove that the complexity class QMA remains unchanged even if every witness qubit is disturbed by constant noise. This result may not only be relevant for physical implementations of verifying protocols but also attacking the relationship between the complexity classes QMA, QCMA and BQP, which can be reformulated in this unified framework of a verifying protocol receiving a disturbed witness. While QCMA and BQP are described by fully dephasing and depolarizing channels on the witness qubits, respectively, our result proves QMA to be robust against 27% dephasing and 18% depolarizing noise.
description: 24 pages, 3 figures