cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Complementarity and entanglement in a simple model of inelastic scattering
Creators: name: Kordahl, David
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: A simple model coupling a one-dimensional beam particle to a one-dimensional harmonic oscillator is used to explore complementarity and entanglement. This model, well-known in the inelastic scattering literature, is presented under three different conceptual approaches, with both analytical and numerical techniques discussed for each. In a purely classical approach, the final amplitude of the oscillator can be found directly from the initial conditions. In a partially quantum approach, with a classical beam and a quantum oscillator, the final magnitude of the quantum-mechanical amplitude for the oscillator's first excited state is directly proportional to the oscillator's classical amplitude of vibration. Nearly the same first-order transition probabilities emerge in the partially and fully quantum approaches, but conceptual differences emerge. The two-particle scattering wavefunction clarifies these differences and allows the consequences of quantum entanglement to be explored.
description: 10 pages, 5 figures. Forthcoming from American Journal of Physics
Auditoría retrospectiva operativa y financiera de la empresa social del estado - Hospital Departamental Cari de la ciudad de Barranquilla - 2002 - 2009
Creators: name: López Pombo, Mariel
name: Simancas Castro, Isaias
Publisher: name: Universidad de Cartagena
Year: 2011
Subjects: Auditoría
Auditoría retrospectiva operativa - Hospital Departamental Cari - Barranquilla (Colombia)
Auditoría financiera - Hospital Departamental Cari - Barranquilla (Colombia)

description: Monografia (Especialista en Gestión de la Calidad y Auditoria de los Servicios de la Salud).--Universidad de Cartagena. Facultad de Ciencias Económicas. Departamento de Postgrado, 2011
description: La finalidad de este trabajo de grado es desarrollar una auditoria retrospectiva de sus servicios asistenciales y comportamiento financiero del 2002 al 2009, a la ESE – HOSPITAL UNIVERSITARIO CARI para determinar el valor agregado que generan en los Indicadores de producción, capacidad técnico científica y operación de los servicios de la ESE Hospital Universitario de Barranquilla – Cari y la conveniencia socioeconómica y viabilidad financiera del margen de participación de los contratos con operadores externos; que permitan determinar su autosostenibilidad en términos de la acertada contratación, adecuada facturación y optimo recaudo mediante este modelo de negocio que se ejecuta, para plantear escenarios de mejoramiento continuo de su portafolio de servicios, donde el ganador sea el usuario de dichos servicios, sin desmedro de su ecuación de equilibrio operacional y presupuestal.
How to estimate carbon footprint when training deep learning models? A guide and review
Creators: name: Heguerte, Lucia Bouza
name: Bugeau, Aurélie
name: Lannelongue, Loïc
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Machine learning and deep learning models have become essential in the recent fast development of artificial intelligence in many sectors of the society. It is now widely acknowledge that the development of these models has an environmental cost that has been analyzed in many studies. Several online and software tools have been developed to track energy consumption while training machine learning models. In this paper, we propose a comprehensive introduction and comparison of these tools for AI practitioners wishing to start estimating the environmental impact of their work. We review the specific vocabulary, the technical requirements for each tool. We compare the energy consumption estimated by each tool on two deep neural networks for image processing and on different types of servers. From these experiments, we provide some advice for better choosing the right tool and infrastructure.
description: Environmental Research Communications, 2023
Barriers to Sport Participation Faced by Ethiopian and Eritrean Migrant Women in Switzerland
Creators: name: Alemu, Betelihem Brehanu
name: Nagel, Siegfried
name: Vehmas, Hanna
Publisher: name: QuiEdit
Year: 2021

description: Global migration (both forced and voluntary) has intensified the interaction between existing and emerging cultures. Sport has gained recognition as an effective tool for enhancing migrants’ overall wellbeing, active participation, and social integration. However, a growing number of studies have shown that migrant women have the lowest rate of sport participation, especially in organized clubs. These findings have brought the accessibility and inclusion of existing sport structure and culture in host countries into question. Using the six-factor model of constraints by Tsai and Coleman (1999), this study explored the barriers that hinder Ethiopian and Eritrea migrant women (EEMW) from participating in sport in Switzerland. Thematic analysis (Braun et al., 2016) was applied to analyze semi-structured interviews and focus group discussions (n=12, 18-51 years old) to understand the interplay between barriers to sport participation and their influence on social integration. The study found that socio-cultural differences from the host community, discrimination, the high cost of sport participation, and structural barriers were influential factors hindering the participation of EEMW. Thus, interactive sport participation among EEMW must be promoted by supportive, multicultural settings to better integrate these women into Swiss society.
description: Italian Sociological Review, Vol 11, No 5S (2021): Sport in the Context of Migration and Health Crises (Guest Editors: Bortoletto N., Michelini E., Porrovecchio A.)
Enclosure – Carnevale di Lugano 1937 Poster
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.
Inventando separatismo. Aproximación a las relaciones políticas entre el gobierno central y la élite empresarial de la costa caribe. 1904-1914
Creators: name: Miranda Pestana, Andrea Carolina
Publisher: name: Universidad de Cartagena
Year: 2010
Subjects: Cartagena (Bolívar- Colombia) - Historia, 1904-1914
Barranquilla (Colombia) - Historia, 1904-1914

description: Tesis (Historiador) -- Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Historia, 2010
description: Esta investigación se inscribe en una tendencia de investigaciones que dirigen su análisis a las relaciones políticas y económicas entre las localidades y los gobiernos centrales. Desde hace varias décadas la historiografía regional mexicana y argentina ha venido mostrando un distanciamiento radical de aquellas investigaciones que únicamente consideran las relaciones políticas entre las élites regionales y las del centro del país, interpretaciones parciales y reducidas a la discusión centro-peritaría.
title: Validierung einer CT-gestützten Software zur dreidimensionalen Messung der acetabulären Abdeckung
Creators: name: Wenzl, Marcus
name: Janz, Viktor
name: Perka, Carsten-Frank
name: Wassilew, Georgi
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: acetabuläre Abdeckung
subject: Cross over Sign
subject: 3D Computertomografie
subject: 610 Medical sciences; Medicine

description: Fragestellung: Ziel der Studie war es ein 3D CT Evaluierungsscript zu entwickeln, mit welchem die acetabuläre Abdeckung unabhängig von der Lage des Patienten und der Beckenkippung berechnet werden kann. Dieses Script basiert auf einer handelsüblichen 3D Software. Es wurde die Reliabilität[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Critical features of nonlinear optical isolators for improved nonreciprocity
Creators: name: Roy, Dibyendu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Light propagation in a nonlinear optical medium is nonreciprocal for spatially asymmetric linear permittivity. We here examine physical mechanism and properties of such nonreciprocity (NR). For this, we calculate transmission of light through two models of a nonlinear optical isolator consisting of (a) a two-level atom and (b) a driven $Λ$-type three-level atom coupled asymmetrically to light inside open waveguides. We find a higher NR in the model (b) than in the model (a) due to a stronger optical nonlinearity in the former. We determine the critical intensity of incident light for maximum NR and a dependence of the corresponding NR on asymmetry in the coupling. Surprisingly, we find that it is mainly coherent elastic scattering compared to incoherent scattering of incident light which causes maximum NR near the critical intensity. We also show a higher NR of an incident light in the presence of an additional weak light at the opposite port.
description: 9 pages, 5 figures
Determinantes de la función de producción de salud infantil en Colombia: Estimación a partir de la encuesta nacional de demografía y salud 2010
Creators: name: Marrugo Arnedo, Carlos
name: Moreno Ruíz, Deicy
Publisher: name: Universidad de Cartagena
Year: 2013
Subjects: Salud pública

description: Tesis(Economista).--Universidad de Cartagena,Facultad de Ciencias Económicas,Programa de Economía,2013
description: Esta investigación tiene por objetivo, estimar los determinantes de la función de producción de salud infantil para Colombia en el año 2010. Se realizó un estudio transversal a partir de microdatos obtenidos en la Encuesta Nacional de Demografía y Salud 2010. Mediante modelos Lineal, Cobb-Douglas y Logit se estimaron los determinantes de la demanda de los principales insumos para la producción de salud como: acceso a vivienda con adecuada infraestructura, probabilidad que la madre asista a controles prenatales y probabilidad de contar con mayor disponibilidad de recursos. Luego, se calcularon las probabilidades predichas para cada insumo y se incorporaron como determinantes en la función, junto a otras características como, edad, género e Índice de masa corporal de la madre
Simulation and structural characterisation of the packing of particles
Creators: name: Wang, Chuncheng
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Particle packing, the assembly of particles, is very common in our daily life and different industries. The size of particles ranges from as small as atoms to as big as stars in the universe. The previous research mainly focuses on the packing of spheres at the micrometre and millimetre scales. By the means of numerical simulations, extensive structural analysis of these packings has been conducted. However, the packing of particles of other sizes and non-spherical shapes is relatively few in the literature. This PhD project aims to systematically investigate a series of packings in different length scales and with different shapes. The size of the particles covered in this study is as small as 20 nm to as big as stars in the universe, and the shape of particles includes spheres and non-spheres. This PhD thesis is separated into two parts. The first part consists of three components focusing on ‘big particles’ from micrometre to millimetre and to the stars in the universe. The first component deals with the structural analysis and statistical description of the packing of fine particles and coarse particles. The second component investigates the non-spherical particle packing while the third one focuses on the packing of stars in the universe. The second part of the thesis focuses on the nanoparticles in the very loose packings with porosity larger than 0.9, which is divided into three components including modelling, structural analysis and dynamics. Except for the second component in the first part in which the coordinates of the stars are obtained from the existing database, the other packings are obtained by using numerical simulations based on discrete element method (DEM). Different algorithms are adopted in the DEM models to simulate different packing systems, while the model is always validated by comparing the results with experiments. The micro-structures of these packing systems are investigated by various analysis methods, which, very interestingly, give consistent and comparable results. The dynamics in the simulated packing process is also examined, and the effect of the material properties on the dynamics and the final packing is comprehensively studied. This thesis generates a lot of original findings, including the proposal of a structural framework to enclose all clusters in the packing, the connection of stars with normal particles on the earth, and filling in the blank of the simulation of the nano-packing in the literature.
The Effect of Reward Practices on Employee Motivation in Dashen Bank S.C.
Creators: name: Abera, Biruk
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The purpose of this research was to investigate, the effect of reward practices on employee motivation in Dashen Bank S.C. The study used both primary and secondary sources of data. A quantitative research approach of data collection was used and 255 questionnaires were distributed out of which 241 of them were returned. Probability sampling (stratified) method was used and employees were selected from each stratum with a random sampling technique. Among the major findings, the overall perception of respondents over current reward practices were not happy, not enough, not competitive and not attractive. on other side the ranking orders as respondents choice of the most motivator factors from the list, payment is the highest influential factor for employee motivation followed by benefit, promotion, recognition and working condition respectively, but according to respondents choice work content and Supervision have the least motivational factors respectively. The result of correlation shows that; there exist positive and significant relation between payment, promotion, benefit, recognition & supervision and employee motivation. On other side, the result of regression analysis shows that; payment and promotion are high explanatory of employee motivation. On top of that, a significant portion of employees considered the reward practices in Dashen Bank S.C. as less motivating, unfair, not competitive and attractive and hence employees seemed to be less responsibility, les loyalty and belongingness and less committed to the organization. It is recommended to review the banks current reward practice that are factor that affect employee motivation. Keywords: Reward Practices, Employee Motivation
Regression-Based Model Error Compensation for Hierarchical MPC Building Energy Management System
Creators: name: Schmitt, Thomas
name: Engel, Jens
name: Rodemann, Tobias
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: One of the major challenges in the development of energy management systems (EMSs) for complex buildings is accurate modeling. To address this, we propose an EMS, which combines a Model Predictive Control (MPC) approach with data-driven model error compensation. The hierarchical MPC approach consists of two layers: An aggregator controls the overall energy flows of the building in an aggregated perspective, while a distributor distributes heating and cooling powers to individual temperature zones. The controllers of both layers employ regression-based error estimation to predict and incorporate the model error. The proposed approach is evaluated in a software-in-the-loop simulation using a physics-based digital twin model. Simulation results show the efficacy and robustness of the proposed approach
description: 8 pages, 4 figures. To be published in 2023 IEEE Conference on Control Technology and Applications (CCTA) proceedings
title: Evaluation des femoracetabulären Impingements mittels kombinierter Bewegungsanalyse und MRT
Creators: name: Landgraeber, Stefan
name: Cichon, Robert
name: Raab, Dominik
name: Jäger, Marcus
name: Kowalczyk, Wojciech
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: FAI Typ Cam
subject: Bewegungsanalyse
subject: MRT
subject: Simulation
subject: 610 Medical sciences; Medicine

description: Fragestellung: Das femoroactabuläre Impingement der Hüfte (FAI) wird unter Zuhilfenahme radiologischer Untersuchungen diagnostiziert. Bei der Diagnostik und Therapie des FAI vom Typ Cam besteht jedoch das Problem, dass es bisher keine Grenzwerte gibt, die die Knochendeformität von einem[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Estudio de factibilidad para el montaje de una lavandería en la ciudad de Maicao
Creators: name: Avila Jiménez, Miluska José
name: Jiménez Rodriguez, Merly Sofia
Publisher: name: Universidad de Cartagena
Year: 1989
Subjects: Estudio de mercado
Estudios de factibilidad

description: Tesis (Economista) -- Universidad de Cartagena, Facultad de Ciencias Económicas. Programa de Economía. 1989
description: Este estudio tiene como objetivo principal, demostrar la factibilidad socio - económica del montaje de una lavandería en la ciudad de Maicao, lo que proporcionaría un gran servicio a la comunidad.
(Unaccompanied) Young Migrants and Football: Mediating a ‘Safe Space’ for Enhancing Subjectivities Systems
Creators: name: Elia, Anna
name: Fedele, Valentina
Publisher: name: QuiEdit
Year: 2021

description: The article focuses on the relationship between young migrants arriving as unaccompanied minors and hosted in SIPROIMI residential community and football, focusing, on the one hand, on the possibility for football to foster young migrants’ insertion path in host countries, on the other hand, on the space football offers for young migrants to articulate their subjectivity. The reflection proposed is based on the preliminary results of a qualitative field research that involved four SIPROIMI centres in Calabria, between May and September 2020. Taking into account both the literature on sport and social capital concerning people with forced migration background, and the specific literature on accompanied migrants’ insertion path in hosting centres, the analysis sustains that, while the nexus between football and the production of social capital sustaining their integration is questioned, it represents a safe space for young migrants’ subjectivities to be expressed and enhanced.
description: Italian Sociological Review, Vol 11, No 5S (2021): Sport in the Context of Migration and Health Crises (Guest Editors: Bortoletto N., Michelini E., Porrovecchio A.)
title: Ruptur der distalen Bizepssehne: Anatomische Refixierung mittels 1 vs. 2 Fadenanker – Vorergebnisse einer prospektiv randomisierten Studie
Creators: name: Weißenberger, Manuel
name: Kollenda, Hans
name: Albrecht-Schoeck, Simon
name: Buschbeck, Stefan
name: Rudolph, Hans
name: Hoffmann, Reinhard
name: Schmidt-Horlohé, Kay
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Distale Bizepssehnenruptur
subject: Anatomische Refixierung
subject: Fadenanker
subject: Prospektiv randomisierte Studie
subject: 610 Medical sciences; Medicine

description: Fragestellung: Die traumatische Ruptur der distalen Bizepssehne stellt eine seltene Verletzung dar. Diese prospektiv randomisierte Studie untersucht erstmalig, ob bei der Refixierung der distalen Bizepssehne eine Verwendung von 2 Fadenankern (Gruppe 2) im Vergleich zu 1 Fadenanker (Gruppe 1) bessere[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Production of Biodiesel from Castor Seed Oil Via Transesterification with Methanol- Ethanol Blends using Calcium oxide as Catalyst
Creators: name: Brhane, Tsegay
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Biodiesel is a renewable and sustainable energy sources with a great potential to replace conventional fuel and causes too much less environmental impact. Vegetable oils which can be edible or nonedible and animal fats can be used as feed stock for biodiesel production. Now a day, nonedible vegetable oils are getting more attraction and castor seed oil is among the nonedible oils having a great potential for biodiesel production. Catalyzed transesterification is most frequently used method for biodiesel production. The catalyst can be homogenous bas or acid heterogenous base or acid and biocatalysts. This research was aimed at producing biodiesel from castor seed oil via transesterification with methanol/ethanol blends. The oil was extracted in soxhlet apparatus using normal hexane as a solvent and its chemical and physical properties were tested and most of the properties were found to be complying with American society for testing for materials (ASTM) quality oil. However, its viscosity was found to be too high. The FAM/E-E (biodiesel) was produced via transesterification of the castor seed oil with methanol and ethanol blends using calcium oxide as solid catalyst. Methanol to ethanol volume ratio, total alcohol to oil molar ratio and catalyst loading were the process variables being studied and Design Expert 7.0.0 software using central composite design was used to investigate the individual and interaction effects of these process variables on the yields of the produced biodiesel. The maximum yield of biodiesel was obtained at 50:50 methanol to ethanol volume ratio, 9:1 total alcohol to oil molar ratio and 2.5% catalyst loading. The properties of the produced biodiesel were tested and most of were found to be complying with that of the ASTM standard biodiesel. However, the density and viscosity were found to be above the ASTM standards. Depending on the results obtained from this study, it can be concluded that the use of mixed methanol and ethanol for transesterification of cator seed oil to biodiesel is viable process. In addition, the use of solid catalyst is a green process since washing of biodiesel with water is not needed and separation of biodiesel from its reaction mixture is easy.
Chiral molecule candidates for trapped ion spectroscopy by ab initio calculations: from state preparation to parity violation
Creators: name: Landau, Arie
name: Eduardus
name: Behar, Doron
name: Wallach, Eliana Ruth
name: Pašteka, Lukáš F.
name: Faraji, Shirin
name: Borschevsky, Anastasia
name: Shagam, Yuval
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Parity non-conservation (PNC) due to the weak interaction is predicted to give rise to enantiomer dependent vibrational constants in chiral molecules, but the phenomenon has so far eluded experimental observation. The enhanced sensitivity of molecules to physics beyond the Standard Model (BSM), has led to substantial advances in molecular precision spectroscopy, and these may be applied to PNC searches as well. Specifically, trapped molecular ion experiments leverage the universality of trapping charged particles to optimize the molecular ion species studied toward BSM searches, but in searches for PNC only a few chiral molecular ion candidates have been proposed so far. Importantly, viable candidates need to be internally cold and their internal state populations should be detectable with high quantum efficiency. To this end, we focus on molecular ions that can be created by near threshold resonant two-photon ionization and detected via state-selective photo-dissociation. Such candidates need to be stable in both charged and neutral chiral versions to be amenable to these methods. Here, we present a collection of suitable chiral molecular ion candidates we have found, including CHDBrI$^+$ and CHCaBrI$^+$, that fulfill these conditions according to our \textit{ab initio} calculations. We find that organo-metallic species have a low ionization energy as neutrals and relatively high dissociation thresholds. Finally, we compute the magnitude of the PNC values for vibrational transitions for some of these candidates. An experimental demonstration of state preparation and readout for these candidates will be an important milestone toward measuring PNC in chiral molecules for the first time.
description: 14 pages, 3 figures and supplementary information
Matching Perspectives of Refugees and Voluntary Sports Clubs in Germany
Creators: name: Fingerle, Michael
name: Röder, Mandy
name: Olmesdahl, Kim
name: Haut, Jan
Publisher: name: QuiEdit
Year: 2021

description: In recent years thousands of refugees from the Middle East and Africa have moved to Europe. Many of them have experienced extremely stressful events and suffer, amongst other things, from lack of social relationships. Policy makers do often convey the impression that voluntary sports clubs (VSCs) can easily help to deal with these issues, as they provide broad offers matching every person’s individual needs. With only few exceptions, research has focused on the view of VSCs and their officials, but mostly left out the perspectives of refugees themselves, especially those outside organized sports. Thus, the focus of the present contribution is on the mutual fit between refugees’ expectations and the offers that sports organizations have. Following a socio-ecological perspective, data from a research project will be used to illustrate both perspectives. Refugees were asked about hindering conditions for participating in sports. In addition, functionaries of sports organizations were asked to answer survey questions regarding the efforts that sports organizations make to include refugees. The results reveal that the majority of the refugees had already actively participated in sports offers in their countries of origin. After arriving in Germany, the sporting habits changed, mostly due to organizational and financial reasons. With respect to functionaries we found that the idea that sport is integrative per se is widely believed in the field.
description: Italian Sociological Review, Vol 11, No 5S (2021): Sport in the Context of Migration and Health Crises (Guest Editors: Bortoletto N., Michelini E., Porrovecchio A.)
title: Elektromagnetisch navigierte iliosakrale Schraubenplatzierung: Eine Phantomstudie zum Vergleich bildgestützter Verfahren
Creators: name: Pishnamaz, Miguel
name: Wilkmann, Christoph
name: Na, Hong
name: Janssen, Max
name: Dienstknecht, Thomas
name: Schmitz-Rode, Thomas
name: Pape, Hans- Christoph
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: EMT
subject: elektromagnetische Navigation
subject: Sakrumfraktur
subject: Navigation
subject: hinterer Beckenring
subject: 610 Medical sciences; Medicine

description: Fragestellung: Elektromagnetisches Tracking bietet die Möglichkeit der Echtzeitnavigation. Ein weiterer Vorteil dieser Technik ist der ausbleibende „line-of-sight“ Effekt. Ziel dieser Studie war es die Machbarkeit dieser neuen Technik am hinteren Beckenring zu überprüfen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Feb 11 Thursday
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
title: Cardiovascular effects of serotonergic agents
Creators: name: Hood, Stuart Hugh Macpherson
Publisher: name: University of Glasgow
Year: 1999

description: Serotonin (5-hydroxytryptamine, 5-HT) is a neurotransmitter which exerts its cardiovascular effects predominantly by interaction with specific 5-HT1 and 5- HT2 receptors. The effects of serotonergic agents differ between in vivo and in vitro preparations and display wide inter-species variation. It is therefore impossible to extrapolate results from animal or in vitro studies to the clinical situation. The role of these two receptors has therefore been studied in patients with suspected coronary artery disease using 3 different 5-HT1 agonists and ketanserin, a 5-HT2 antagonist. Sumatriptan and naratriptan, 5-HT1B/D receptor agonists, vasoconstrict the systemic and pulmonary circulations. Sumatriptan-induced vasoconstriction appears more pronounced in the pulmonary circulation suggesting a greater density of 5-HT1 receptors in the pulmonary compared to the systemic circulation. Although left ventricular end diastolic pressure and pulmonary artery wedge pressure rose after sumatriptan, there was no change in peak rate of left ventricular pressure rise, indicating the absence of a negative inotropic action. Naratriptan, an analogue of sumatriptan, displayed no significant effect on coronary artery diameter, a finding previously noted with sumatriptan. Eletriptan, a selective 5-HT1D agonist with less 5-HT1B activity, had little vasoconstrictor effect on the systemic, pulmonary or coronary circulation perhaps suggesting that the 5-HT1B receptor subtype mediates vasoconstriction. The effect of sumatriptan on systolic time intervals and forearm blood flow was also assessed. The results suggest that STI's are of potential use in the non-invasive assessment of 5-HT1 agonists. No significant effect on forearm blood flow was observed but plasma noradrenaline levels fell after subcutaneous sumatriptan. Ketanserin, a 5-HT2 antagonist, acted as a vasodilator in the systemic and pulmonary circulation but failed to vasodilate the coronary arteries, presumably because the patients in this study had stable angina without platelet activation and therefore had low circulating levels of serotonin.
Mechanical analysis of nanoscale thin plates and conveying belt structures
Creators: name: Xu, Menghua
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Plate-like structures are widely used both in scientific research and industrial applications. Understanding the mechanical properties of such structures is important for design, installation and operation of many devices and equipment. Although they are classified as a traditional topic in the realm of engineering mechanics, plates have some new applications and thus, problems do arise: e.g. large deformation problems of nanoscale plates and twist problems of long conveying belts. This thesis represents an effort to improve the understanding of such problems and provide possible solutions to overcome such problems. It employs a mathematical approach to investigate the static and dynamic behaviours of nanoscale beams, plates and films, and adapts a finite element method (FEM) to study the dynamic responses of complex large-scale conveying belts. To study the bending behaviours of multi-layered nanoscale plates or plate-like structures, an improved core-shell model with multiple layers is established, which takes into account the surface/interface tension and elasticity, size-dependent properties and geometrical nonlinearity. Modified governing equations are obtained and solved. Approximate solutions in closed form are also obtained. Based on these solutions numerical studies are conducted to further investigate the influences of surface/interface effect. The mathematical models are refined to consider the free and forced vibrations of multi-layered nanoscale plates with the focus on size-dependent properties and geometrical nonlinearity. The Motion equations and Duffing equations are derived and solved numerically. Based on the closed form solutions for different boundary conditions such as circular plates and rectangular plates with all edges simply supported or clamped, the nature of vibration of nanoscale plates is explored. To further understand the dynamic behaviours, different load and boundary situations are also studied. An FEM model is established to explore the twist phenomenon of pipe belt conveyors (PBC). This FEM model is validated by comparing the results of contact forces with those from a previous experiment. It adopts three realistic steps to assemble the PBC system and can give a credible prediction of the stress and strain in belts. The results demonstrate that this FEM model is able to reproduce the belt twist phenomenon and the twist is sensitive to many factors such as the effective centre of mass and shear centre of the closed belt. These findings offer a good guideline for the design, installation and operation of PBCs in industry.
Guía para diseño de pavimentos sobre arcillas expansivas.
Creators: name: Gomez Nuñez, Leovigildo
name: Prada Arrieta, Pantaleon
name: Torres O, Ramon (Director)
Publisher: name: Universidad de Cartagena
Year: 2000
Subjects: Pavimentos
Arcillas
Arcillas expansivas

description: Tesis (Ingeniero Civil).--Universidad de Cartagena. Facultad de Ciencias E Ingenierías. Programa de Ingeniería Civil, 2000.
description: El presente estudio tiene por objeto elaborar una guía para el diseño de pavimentos con presencia de arcillas expresividad en la sub-rasante.
title: Hat die zusätzliche U-Blade®-Implantation bei Gamma3-Nagel®-Osteosynthesen von pertrochantären Femurfrakturen Einfluss auf die Cutout-Rate?
Creators: name: Heinecke, Markus
name: Arlt, Stephan
name: Ullrich, Bernhard
name: Hofmann, Gunther O.
name: Mendel, Thomas
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Pertrochantäre Femurfraktur
subject: Gamma3-Nagel®
subject: U-Blade®
subject: Cutout
subject: 610 Medical sciences; Medicine

description: Fragestellung: Pertrochantäre Femurfrakturen gehören zu den häufigsten Frakturen im hohen Alter mit stetigem Anstieg der Fallzahlen. Gerade im Hinblick auf die Zunahme der Osteoporose erfordert die operative Versorgung eine sichere Verankerung des Implantats im Femurkopf. Als eines der[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Testing $Λ$-Free f(Q) Cosmology
Creators: name: Ferreira, José
name: Barreiro, Tiago
name: Mimoso, José P.
name: Nunes, Nelson J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study a model of Symmetric Teleparallel gravity that is able to account for the current accelerated expansion of the universe without the need for dark energy component. We investigate this model by making use of dynamical system analysis techniques to identify the regions of the parameter space with viable cosmologies and constrain it using type Ia supernova (SnIa), cosmic microwave background (CMB) data and make forecasts using standard siren (SS) events. We conclude that this model is disfavored with respect to $Λ$CDM and forthcoming standard siren events can be decisive in testing the viability of the model.
description: 9 pages, 3 figures, version 2 revision
On the analytic systole of Riemannian surfaces of finite type
Creators: name: Ballmann, Werner
name: Matthiesen, Henrik
name: Mondal, Sugata
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In our previous work we introduced, for a Riemannian surface $S$, the quantity $ Λ(S):=\inf_Fλ_0(F)$, where $λ_0(F)$ denotes the first Dirichlet eigenvalue of $F$ and the infimum is taken over all compact subsurfaces $F$ of $S$ with smooth boundary and abelian fundamental group. A result of Brooks implies $Λ(S)\geλ_0(\tilde{S})$, the bottom of the spectrum of the universal cover $\tilde{S}$. In this paper, we discuss the strictness of the inequality. Moreover, in the case of curvature bounds, we relate $Λ(S)$ with the systole, improving a result by the last named author.
description: 35 pages, 1 figure; v2: slightly reorganized, fixed a technical problem in the proof of Thm. 7.3 (v2), added some references, to appear in GAFA
Feb 12 Friday
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
A computer aided detection sytem for the evaluation of breast cancer
Creators: name: Sujit, Sheeba Jenifer
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: For many years, breast cancer has been one of the leading causes of death among women. Early detection of breast cancer is the key to improve the survival rate. Mammography is currently the most efficient tool for early detection of breast cancer. A large number of digital mammograms generated each year needs accurate and fast interpretation of images. The drawback of mammography is that the digital mammograms are difficult images to be interpreted visually. Non-cancerous lesions can be misinterpreted as a cancer (false-positive value), while cancers may be missed (false-negative value). A Computer-Aided Detection (CAD) system can help radiologists in this difficult task of interpreting digital mammograms. Though there are many CAD techniques developed today, clinical success depends on CAD having a high sensitivity, specificity and accuracy and the reader taking appropriate action when interpreting the CAD prompts. This balance is not easy to achieve. The motivation behind this research work is to develop a CAD system with high accuracy, sensitivity and specificity in the range of 95% to 100%. The work plan of the proposed research consists of four stages: The first stage involves the development of pre-processing methods for contrast enhancement of digital mammograms.The second stage of the proposed CAD is the development of suitable algorithms for segmentation of regions of interest using Otsu algorithm and data clustering techniques. The third stage involves the selection and extraction of image features tailored for the analysis of digital mammograms. Thirteen textural features for four spatial orientations: 0°, 45°, 90° and 135° are extracted from Gray-level co-occurrence matrices (GLCM) for the purpose of image analysis. The last stage is the evaluation of Neural network architectures and Support Vector Machines (SVM) aimed at using CAD system as a decision making aid for automatic detection of breast cancer. The Mammographic Image Analysis Society (MIAS) database of digital mammograms is used to evaluate the effectiveness of the developed CAD system. The overall performance of the developed system is compared with previously established methods based on the performance measures such as accuracy, specificity and sensitivity.
title: Entwicklung eines Messsystems zur Ermittlung der hüftzentrierten Beinlänge in der Hüftendoprothetik
Creators: name: Grunert, Ronny
name: Schmidt, Michael
name: Wendler, Toni
name: Möbius, Robert
name: Maschke, Ronny
name: Hammer, Niels
name: Rotsch, Christian
name: Prietzel, Torsten
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Hüftendoprothetik
subject: Biomechanik
subject: Messsystem
subject: Beinlänge
subject: 610 Medical sciences; Medicine

description: Fragestellung: Die exakte Beinlänge und Rekonstruktion des Hüftrotationszentrums sind wichtige Qualitätskriterien zur Wiederherstellung der ursprünglichen Biomechanik. Operationsbedingte Beinlängendifferenzen können zu funktionellen Einschränkungen führen und [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2015)
Preparation of atomic-layer transition metal chalcogenides with application in opto-electronic devices
Creators: name: Xu, Zaiquan
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Graphene like two-dimensional materials are important elements of potential optoelectronics applications due to their exceptional electronic and optical properties. The preparation and processing of these materials towards the realization of opto-electronic devices has been one of the main motivations for the recent development of photonics and optoelectronics. My Ph.D projects involves with three aspects: 1. Preparations of atomic-layer transition metal dichalcogenides (TMDs), e.g. MoS₂ , WS₂ and WSe₂ with chemical vapour depositions. In this part, we present the synthesis of large size (>100 μm) single crystals of atomically thin tungsten disulfide (WS₂ ), a member of TMDs family, on sapphire substrate. More importantly, we demonstrate a polystyrene (PS) mediated delamination process via capillary force in water which allows recyclable use of the growth substrates; 2. Fabrication of TMDs based photodetectors and study the performance and mechanisms with spatial photocurrent mapping. We developed an efficient photodetector with extremely large photo-responsive active area based on a lateral p-n junction of monolayer-bilayer WSe₂ . The junction is produced by partially peeling off the upper layer of a bilayer WSe₂ crystal grown by atmospheric pressure chemical vapour deposition. Kelvin probe force microscope and photocurrent mapping were used to understand the performance and the mechanism; 3. Atomic layered thin TMDs based flat lenses: fabrication and imaging. An ultrathin flat lens with a thickness of 7 Å, which corresponds to the fundamental physical limit of material thickness, is fabricated on a large monolayer WSe2 single crystals with direct femtosecond laser writing. We apply the material with ultra-high refractive index to achieve three-dimensional (3D) focusing with almost diffraction-limited resolution by effective modulation of the amplitude of the incident light.
Percepciones de los y las docentes sobre las prácticas pedagógicas en el marco de la articulación de la educación media con la técnica profesional en Instituciones Educativas de la Zodes Dique departamento de Bolívar
Creators: name: Benavides Aguas, Gilma Isabel
name: Cogollo Moreno, Geovani
Publisher: name: Universidad de Cartagena
Year: 2013
Subjects: Personal docentes - Formación profesional
Maestros - Aprendizaje

description: Tesis (Magister en Educación)-- Universidad de Cartagena. SUE Caribe. Maestría en Educación, 2013
description: La situación problémica objeto de esta investigación tiene como punto de referencia la articulación entre la educación media técnica, la técnica profesional y la mediación que ejercen las prácticas pedagógicas en Instituciones educativas ubicadas en la Zona de Desarrollo Económico y Social (ZODES) del Canal Dique, que han diversificado su formación básica a partir de los requerimientos determinados en el Proyecto para la Transformación de la Educación Técnica y Tecnológica (2006) liderado por el Ministerio de Educación Nacional, que en el marco de la alianza con la Universidad de Cartagena y el sector productivo acuícola, se denominó Proyecto de Formación Técnica y Tecnológica Agropesquera y Acuícola (2006-2009). A partir de la visión crítica de los investigadores al quehacer formativo y asumiendo como objetivo principal la percepción que sobre las prácticas pedagógicas tienen los docentes seleccionados para el estudio se determinaron como criterios para el análisis los siguientes interrogantes: ¿Cómo las prácticas pedagógicas de los docentes en las instituciones de educación media técnica de la ZODES Dique en el Departamento de Bolívar, impactan los procesos de articulación entre este nivel y el de formación Técnica Profesional en esta zona? ¿Qué elementos caracterizan a las prácticas pedagógicas de los docentes en las instituciones de la Media técnica en la ZODES Dique en el proceso de articulación con la formación técnica profesional? ¿Qué compromiso(s) asume el docente desde su práctica pedagógica en los procesos de desarrollo productivo de la ZODES?, ¿Qué grado de sensibilidad muestra el y/o la docente para promover un cambio social significativo al interior del contexto particular de práctica? ¿Cuáles son los criterios y/o lineamientos aplicados por los docentes desde la práctica pedagógica para la implementación de nuevas e innovadoras propuestas de formación? ¿Cómo puede la flexibilización de los currículos potenciar la práctica pedagógica y hacerla más pertinente?
A study of feature selection and transfer learning in Electroencephalography based Brain Computer Interface
Creators: name: Kee, Chea Yau
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Brain Computer Interface (BCI) is an interface system that allow direct communication pathway from brain to external devices bypassing conventional neuromuscular channel. The main motivation of such systems is to restore several lost abilities of individuals suffering from severe motor impairment; thus improving their quality of life. Electroencephalography (EEG) is by far the most widely used non-invasive neuro-imaging modality, owing to its practicality in real-world application. To date, session-to-session transferability and subject transferability are two of the major issues in BCI. The first objective of this research is to investigate the effect of channel selection on EEG data recorded with modalities with high electrode density setting. It is shown that variants of genetic algorithm can be used to study the optimal tradeoff between classification accuracy of a BCI system and the number of selected channels. Although the results from this stage shows that significant reduction in EEG electrodes can be achieved at expense of minor degradation in classification accuracy, the results also confirms the subject dependency and the non-stationarity of EEG signals. The non-stationarity of EEG signal is often associated with the constant changes in human mental state and this has impeded the efficiency in session to session transfer. The effect of non-stationarity is magnified in small sample setting where the small amount of training data available is not representative enough to derive a reliable feature extraction and classification model. The second research objective is to implement and evaluate Renyi entropy and fractal dimension algorithms as alternative feature extraction methods for motor imagery data. Renyi entropy proposed as an alternative feature extraction method has shown comparable performance with the best performing variant of the-state-of-the-art common spatial pattern (CSP) in various BCI settings. As compared to original CSP, Renyi entropy is less affected by the non-stationarity of EEG signals in small sample setting. In addition, the features extracted using Renyi entropy shows better subject transferability. The final objective of this research is to implement adaptation techniques to improve both inter-session and inter-subject transferability of EEG data. For subject-to-subject transfer, adaptation algorithms such as covariate shift can be used to weight the importance of each training sample, thus providing a more suitable learning model. As for session-to-session transfer, inter-session adaptation with covariate shift and inter-trial adaption with global mean updating and sequentially updated classification model is shown to enhance the performance of a BCI system.