cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Centroid of Volume: A Surface Topography Measure used to Detect Changes in Adolescent Idiopathic Scoliosis
Creators: name: Melia, Alexandra
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering--Biomedical
subject: Adolescent Idiopathic Scoliosis
subject: Surface Topography
subject: Torso Imaging

description: Adolescent Idiopathic Scoliosis (AIS) is a complex three-dimensional (3D) deformity that affects 2-3% of the population. Current methods of diagnosing and monitoring AIS are repeated two-dimensional X-rays every 6-12 months. Repeated radiographs have been shown to increase cancer risk and do not account for 3D changes in the spine. To overcome these drawbacks, the University of Calgary Scoliosis group has developed a non-radiographic imaging technique to analyze 3D deformities using Surface Topography (ST). The overarching objective is to validate a set of ST indices to reliably detect scoliosis. A new ST index, Centroid of Volume (COV), that is a 3D measure of torso balance, is investigated in this thesis. This work found that COV detected differences between healthy and AIS groups and was moderately correlated to the Cobb angle. This index shows promise to detect AIS, which could help advance ST as a clinical tool for monitoring or detecting scoliosis.
The static quark self-energy at large orders from NSPT
Creators: name: Bali, Gunnar S.
name: Bauer, Clemens
name: Pineda, Antonio
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using Numerical Stochastic Perturbation Theory (NSPT), we calculate the static self-energy of SU(3) gauge theory up to order α^{20}. Simulations on a large set of different lattice volumes allow for a careful treatment of finite size effects. The resulting infinite volume perturbative series of the static self-energy is in remarkable agreement with the predicted asymptotic behaviour of high order expansions, namely with a factorial growth of perturbative coefficients known as renormalon.
description: 7 pages, 3 figures. Talk presented at the XXIX International Symposium on Lattice Field Theory (Lattice 2011), July 10-16, 2011, Squaw Valley, Lake Tahoe, California, USA
Serveis en línia amb eines de Wordpress
Creators: name: Russo, Patricia
Publisher: name: Item: revista de biblioteconomia i documentació
Year: 2023

description: El web de qualsevol entitat té l’objectiu principal de donar a conèixer aquella entitat en l’entorn en línia. Aquesta finalitat s’estén també al sector de les biblioteques, que a més de donar informació general i de contacte, poden oferir tant accés al catàleg com a molts altres serveis d’atenció a l’usuari.
description: Item: revista de biblioteconomia i documentació, 2023: Núm.:74
High-current anode phenomena in vacuum arcs
Creators: name: Khakpour, Alireza
Publisher: name: Universität Rostock
Year: 2018
Subjects: subject: 620 Engineering & allied operations
subject: 621.3 Electrical Engineering, Electronics

description: The goal of the work is to investigate the high-current anode phenomena using spectroscopic methods as well as electrical measurements. Different current waveforms and vacuum interrupter properties on the formation of high-current anode phenomena are investigated. Optical emission spectroscopy combined with high-speed camera imaging is used to investigate the temporal and spatial distribution of different species during discharge modes. The ground state density of Cr I before and after current zero is calculated. A new electric arc model based on the existence diagram is proposed.
How the written structure of mathematics tasks influences secondary school students’ engagement and learning.
Creators: name: REILLY, YVONNE CATHERINE
Publisher: name: Monash University
Year: 2023
Subjects: Mathematics and numeracy curriculum and pedagogy

description: As student engagement with mathematics experiences have been shown to be directly related to mathematics learning outcomes, understanding of engagement in mathematics is critical. This study adds to the knowledge of student engagement in mathematics by investigating how the written structure of mathematics tasks influence student engagement and learning. The study explored two versions of mathematics tasks, employing a combination of survey and comparative case study to better understand student opinions, preferences, engagement and learning with mathematics tasks. In this study, a simple written structure task more effectively generated engagement and learning than a traditional, textbook task.
Aboriginal participation in the Vancouver/Whistler 2010 Olympic Games : consultation, reconciliation and the new relationship
Creators: name: Sidsworth, Robin
Publisher: name: University of British Columbia
Year: 2010

description: This thesis investigates Aboriginal participation in the Vancouver/Whistler 2010 Winter Olympic Games to assess the manner in which Aboriginal peoples participated in the 2010 Games and the implications of this Aboriginal participation for the Olympics and Aboriginal participation in British Columbia and Canada more generally. This thesis employs two means for providing the context and developing guidelines from which to assess Aboriginal participation in the 2010 Games. The first considers Aboriginal participation in past Olympic Games, which provides historic examples to contrast against 2010 Games efforts, and describes the Olympic context in which the 2010 Games occurred. Review of past Olympic Games reveals little meaningful Aboriginal participation, but indicates the increasing importance that sustainability issues, such as Aboriginal participation, pose for the Olympic Games. The second consists of the examination of jurisprudence addressing how Aboriginal peoples are expected to participate in projects and decision making processes in light of the constitutional protection afforded to Aboriginal rights and title. This jurisprudence review reveals that legal guidelines emphasize the need for meaningful Aboriginal participation to advance the purposes of recognition and reconciliation, that these purposes require greater consultation and accommodation of Aboriginal peoples, and that currently the Crown is struggling to structure positive responses to this judicial guidance. Following these two examinations, this thesis turns its attention specifically to Aboriginal participation in the 2010 Games. The utilization of the historic Olympic and Canadian legal contexts to assess the 2010 Games reveals that the Aboriginal participation which occurred was largely successful and praiseworthy. Aboriginal participation in the 2010 Games far exceed that of previous Olympics, and marks a significant improvement on much of the efforts to pursue Aboriginal participation assessed by the judiciary. This indicates that Aboriginal participation in the 2010 Games holds significant lessons for both the Olympics, and those seeking more effective Aboriginal participation in British Columbia and Canada.
Performance Enhancement of Aerobic Landfill Bioreactors
Creators: name: Bartholameuz, Eranda
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Environmental
subject: Aerobic, Landfill, Enhancement, Enzymes

description: The operation of aerated waste cells has several advantages over traditional landfills such as, increased rate of waste stabilization and reduced greenhouse gas emissions. However, the operation of aerated waste cells is fraught with uncertainties because it has not been thoroughly studied to overcome all the technical difficulties. This thesis presents results from an optimization study involving three main aspects of aerobic waste cells; optimization of aeration techniques, aerobic waste cell enhancement to biologically degrade lignin, and drying of an aerobic waste cell to prepare it for mining. The study consisted of a series of batch and flow through lysimeter experiments as well as mathematical modeling. The best aeration technique was identified by conducting lysimeter experiments and mathematical modeling. The study revealed that a waste cell aerated with a vertical piping system would yield better aeration and better biodegradation compared to other techniques used. Two other techniques were tested for aeration; a horizontal piping system and the leachate collection system. Both batch and lysimeter experiments, as well as reaction kinetic modeling, were used to determine the most suitable enzyme to aerobically biodegrade lignin in a waste matrix. The results showed that Manganese Peroxidase (MnP) is the best enzyme for lignin degradation. The enzymatic enhancement of leachate with MnP resulted in rapid hydrolysis of lignocellulose. Also, enzymes were able to increase the overall reaction rates. However, the overall reaction rates were lower than hydrolysis rates, suggesting the possibility of existence of other limiting factors. The waste cell drying was evaluated using rapidly aerated lysimeters and mathematical analysis. The results showed a threefold increase in evaporation when the aeration rate was increased ten times.
Dynamical evolution of a bulge in an N-body model of the Milky Way
Creators: name: Saha, Kanak
name: Martinez-Valpuesta, Inma
name: Gerhard, Ortwin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The detailed dynamical structure of the bulge in the Milky Way is currently under debate. Although kinematics of the bulge stars can be well reproduced by a boxy-bulge, the possible existence of a small embedded classical bulge can not be ruled out. We study the dynamical evolution of a small classical bulge in a model of the Milky Way using a self-consistent high resolution N-body simulation. Detailed kinematics and dynamical properties of such a bulge are presented.
description: 2 pages, 2 figures, to appear in the proceedings of "Assembling the Puzzle of the Milky Way", Le Grand Bornand (April 17-22, 2011), C. Reyle, A. Robin, M. Schultheis (eds.)
title: Qualité de vie
title: l'imagerie mentale guidée a-t-elle une place auprès de la personne soignée atteinte d'un cancer?
titleType: Subtitle
title: Qualité de vie
titleType: AlternativeTitle
Creators: name: Bützberger, Céline
Publisher: name: Unknown
Year: 0
Subjects: subject: Qualité de la vie
subject: Cancer
subject: Imagerie mentale
subject: Relation patient-infirmière

description: Le cancer continue de toucher un nombre croissant de personnes. Malgré les progrès effectués par la médecine conventionnelle, leur qualité de vie demeure parfois impactée. En effet, le cancer et ses traitements ont des répercussions autant sur le somatique que sur le psychisme. Dans l’idéal, l’infirmière devrait accompagner les personnes soignées de manière holistique et l’un de ses rôles est de veiller au maintien de leur qualité de vie. Dans ce contexte, les médecines complémentaires pourraient apporter une aide non négligeable. Parmi celles-ci se trouve l’imagerie mentale guidée, qui est axée sur la connexion entre le corps et l’esprit.
Muonium emission into vacuum from mesoporous thin films at cryogenic temperatures
Creators: name: Antognini, A.
name: Crivelli, P.
name: Prokscha, T.
name: Khaw, K. S.
name: Barbiellini, B.
name: Liszkay, L.
name: Kirch, K.
name: Kwuida, K.
name: Morenzoni, E.
name: Piegsa, F. M.
name: Salman, Z.
name: Suter, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on Muonium (Mu) emission into vacuum following μ+ implantation in mesoporous thin SiO2 films. We obtain a yield of Mu into vacuum of (38\pm4)% at 250 K temperature and (20\pm4)% at 100 K for 5 keV μ+ implantation energy. From the implantation energy dependence of the Mu vacuum yield we determine the Mu diffusion constants in these films: D250KMu = (1.6 \pm 0.1) \times 10-4 cm2/s and D100KMu = (4.2\pm0.5)\times10-5 cm2/s. Describing the diffusion process as quantum mechanical tunneling from pore-to-pore, we reproduce the measured temperature dependence T^3/2 of the diffusion constant. We extract a potential barrier of (-0.3 \pm 0.1) eV which is consistent with our computed Mu work-function in SiO2 of [-0.3,-0.9] eV. The high Mu vacuum yield even at low temperatures represents an important step towards next generation Mu spectroscopy experiments.
description: 5 pages, 5 Figures
Factors Influencing Orthopedic Nurses' Pain Management Decision Making: A Focused Ethnography
Creators: name: Denness, Kayla
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Nursing
subject: FOS: Health sciences
subject: pain management
subject: Nursing
subject: Clinical Decision Making
subject: orthopedic surgery
subject: acute pain
subject: nursing unit culture

description: The experience of acute pain is highly subjective, and poor pain management contributes to a multitude of harmful conditions. Examining the context in which pain management occurs is important in formulating plans for improvement. The aim of this focused ethnography was to explore the factors orthopedic surgery nurses consider when deciding whether to initiate opioid analgesia for patients who have received a nerve block following total knee arthroplasty. Ten nurses participated in semi-structured interviews using a case study vignette. The overarching factors affecting pain management decision-making in this study relate to the culture of the unit, the self-concept of nurses, and nurses’ perception of patient assessments. Nurses are challenged to provide quality patient-centered care in a fast-paced clinical environment where efficiency and a brief length of stay are prioritized. Supporting informal nursing leaders and facilitating patient-centred care while maintaining efficiency may improve the unit culture and, in turn, pain management practices.
Supplemental Material for Carja and Plotkin, 2019
Creators: name: Carja, Oana
name: Plotkin, Joshua B
Publisher: name: Figshare
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Supplementary Material for the paper 'Evolutionary rescue through partly heritable phenotypic variability', Carja and Plotkin, 2019.
Satellite peaks in the scattering of light from the two-dimensional randomly rough surface of a dielectric film on a planar metal surface
Creators: name: Nordam, Tor
name: Letnes, Paul Anton
name: Simonsen, Ingve
name: Maradudin, Alexei A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A nonperturbative, purely numerical, solution of the reduced Rayleigh equation for the scattering of p- and s-polarized light from a dielectric film with a two-dimensional randomly rough surface deposited on a planar metallic substrate, has been carried out. It is found that satellite peaks are present in the angular dependence of the elements of the mean differential reflection coefficient in addition to an enhanced backscattering peak. This result resolves a conflict between the results of earlier approximate theoretical studies of scattering from this system.
description: 15 pages, 4 figures
Finding conservation laws for partial differential equations
Creators: name: Wan, Andy Tak Shik
Publisher: name: University of British Columbia
Year: 2010

description: In this thesis, we discuss systematic methods of finding conservation laws for systems of partial differential equations (PDEs). We first review the direct method of finding conservation laws. In order to use the direct method, one first seeks a set of conservation law multipliers so that a linear combination of the PDEs with the multipliers will yield a divergence expression. Once a set of conservation law multipliers is determined, one proceeds to find the fluxes of the conservation law. As the solution to the problem of finding conservation law multipliers is well-understood, in this thesis we focus on constructing the fluxes assuming the knowledge of a set of conservation law multipliers. First, we derive a new method called the flux equation method and show that, in general, fluxes can be found by at most computing a line integral. We show that the homotopy integral formula is a special case of the line integral formula obtained from the flux equations. We also show how the line integral formula can be simplified in the presence of a point symmetry of the PDE system and of the set of conservation law multipliers. By examples, we illustrate that the flux equation method can derive fluxes which would be otherwise difficult to find. We also review existing known methods of finding fluxes and make comparison with the flux equation method.
Design and Analysis of Wireless Networks for Petroleum Refineries
Creators: name: Herrmann, Michael James
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Electronics and Electrical
subject: machine to machine
subject: Petroleum
subject: Wireless
subject: optimization
subject: wsan

description: This thesis investigates wireless sensor network design for industrial petroleum refineries. A wireless channel measurement campaign is conducted in a Shell Canada gas refinery west of Calgary. The propagation measurements are the first to characterize the large-scale channel statistics for peer-to-peer transmission in an outdoor refinery environment. It is shown that the propagation is well characterized by the familiar standard pathloss and log-normal shadowing model. This model is then used in building a machine-to-machine network performance simulation for process control in a petroleum refinery. The simulation requires the use of cross-layer optimizations to determine the routes which maximize the network lifetime. Linear Programming and Mixed Integer Linear Programming problems are formulated and evaluated to solve the cross-layer design problem. Carrier Sense Multiple Access (CSMA) and Time Division Multiple Access (TDMA) schemes are both used, but it is shown that TDMA has superior performance.
Wind Farm Layout Optimization Considering Commercial Turbine Selection and Hub Height Variation
Creators: name: Abdulrahman, Mamdouh Ahmad
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Energy
subject: Engineering
subject: Engineering--Mechanical
subject: Wind farm layout optimization
subject: Layout upgrade optimization
subject: Commercial turbine selection
subject: Hub height variation
subject: Multi-population genetic algorithm
subject: Thrust coefficient
subject: Aerodynamic efficiency
subject: Co-operative optimization
subject: Selfish optimization

description: New aspects were added to the wind farm layout optimization problem; commercial turbine selection, generic realistic representation for the thrust coefficient, investigating the power-cost of energy trade-off range, and introducing the wind farm layout upgrade optimization problem. A range of commercial turbines was selected and the manufacturers’ power curves were used to evaluate the power developed by each turbine using the effective wind speed. The classical Jensen’s wake model was implemented to simulate the wake and wake interference within the farm in an analytic and accurate way. A simple field-based cost model was developed to evaluate the cost of any layout in terms of the turbine rated power and hub height. For the upgrade cases, the cost model included an area factor to account the upgraded area to the original farm area. A Genetic Algorithm was used for optimization throughout this dissertation. A technique called Random Independent Multi-Population Genetic Algorithm was used in some cases to accelerate the optimization. The results showed that co-operative optimization is superior over the selfish one. The turbine aerodynamic efficiency was found to magnify the difference between the two optimization strategies. A wide range of commercial turbines was selected and a useful range of power-cost of energy trade-off was obtained. The optimization was found to be more efficient in offshore cases because of the low entrainment coefficient in the wake model. The Random Independent Multi-Population technique caused a significant reduction in the speed of the optimization. It is likely that most farms can be efficiently and practically upgraded with a wide range of power-cost of energy trade-offs, using the proposed upgrade layout and the optimization objective.
Independent parameters for special instanton bundles on P^{2n+1}
Creators: name: Hoffmann, Norbert
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J60, 14D20, 14E08

description: Motivated by Yang-Mills theory in 4n dimensions, and generalizing the notion due to Atiyah, Drinfeld, Hitchin and Manin for n=1, Okonek, Spindler and Trautmann introduced instanton bundles and special instanton bundles as certain algebraic vector bundles of rank 2n on the complex projective space P^{2n+1}. The moduli space of special instanton bundles is shown to be rational.
description: 16 pages. v2: minor changes
Neogonodactylus torus Manning 1969
Creators: name: Almeida, Alexandre Oliveira De
name: Guerrazzi, Maria Cec Lia
name: Coelho, Petr Ȏ Nio Alves
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Stomatopoda
Gonodactylidae
Neogonodactylus
Neogonodactylus torus

description: Neogonodactylus torus (Manning, 1969)
Material examined (N=1). 1f, 24/III/2005, St. 0 1 (MZUESC #701).
Distribution. Western Atlantic – North Carolina, southeast and northwest Florida, Yucatan, Cuba, Barbados, Panama, and Brazil (from Pará to Bahia) (Manning 1969; Gomes Corrêa 1986).
Ecological notes. In depths between 10 and 364 m (Manning 1969).
Previous records in Bahia. Gomes Corrêa (1986) (as Gonodactylus torus).
Remarks. Southern range limit known for this species is Abrolhos Archipelago (Gomes Corrêa 1986).
description: Published as part of Almeida, Alexandre Oliveira De, Guerrazzi, Maria Cec Lia & Coelho, Petr Ȏ Nio Alves, 2007, Stomatopod and decapod crustaceans from Camamu Bay, state of Bahia, Brazil, pp. 1-45 in Zootaxa 1553 on page 7, DOI: 10.5281/zenodo.178168
Learning, Breathing and Well-Being: Teachers' Reflections on Pedagogical Possibilities through Mindfulness
Creators: name: Holmes, Kimberley Anne
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Education--Curriculum and Instruction
subject: Mindfulness
subject: Learning sciences
subject: Integral model
subject: narrative inquiry

description: The inspiration and motivation for this thesis came from my experiences as a student, a teacher and a mother. Through years of involvement with various types of education, I recognized significant problems embedded within the traditional ideologies of school: the fragmented focus of the assembly line model, the disregard of learning that is relevant to personal development, and the general disengagement of the educational process. I also observed increasing mental and physical health issues amongst teachers and students due to workload, class size, and time constraints. In addition, the Alberta government and school boards are recommending complex system changes, and this will require teachers to reflect carefully and mindfully on their current pedagogical praxis. Hence, this research was designed to explore the role of mindfulness in curriculum and learning, as a response to these challenges. I engaged nine educators in an initial interview to discuss their understanding of mindfulness and their use of mindful practices in their personal and professional lives. They then participated in four life writing activities and a final focus group activity. The results were analyzed and interpreted using the Integral model. The findings contributed to an exploration of the possibilities for mindful curriculum and learning. The analysis of findings, based on the combination of the data gathered, the theoretical framework, and the existing literature, suggests a framework for ongoing teacher development in mindfulness.
A Genetic Algorithm Optimizer with Applications to the SAGD Process
Creators: name: Chen, Zhen
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Engineering--Petroleum
subject: Optimization
subject: Reservoir Simulation
subject: Genetic Algorithm

description: Steam-assisted gravity drainage (SAGD) using parallel pairs of horizontal wells, one drilled for steam injection and the other for oil recovery, is the most widely used and effective in-situ method for recovering the Canadian oil sands. An optimization task is used to identify the parameters that will produce either a maximum or minimum value for objective functions the user specifies. In the area of reservoir simulation, the parameters can be well spacing to identify optimal field development plan, or a steam injection pressure/rate and a liquid production rate in the SAGD process for optimal operating conditions. The objective functions may be physical quantities, such as cumulative oil produced, the recovery factor, and the cumulative steam-oil ratio, or an economic index like net present value (NPV) dependent on those physical quantities. They can also be a function independent on the physical quantities, e.g., a history match data error if the optimization task is history match. The objective of this thesis is to develop an optimizer using a genetic algorithm that can be used to optimize a variety of tasks in reservoir simulation, including the history match error minimization, the optimal field development plan, production optimization and process optimization. In this work, the genetic algorithm using both binary and continuous encoding is designed and developed, which can be coupled with a reservoir simulator to study optimization tasks in reservoir simulations. This genetic algorithm is benchmarked with the traditional gradient based optimization algorithm. The genetic algorithm optimizer coupled with a reservoir simulator is used to optimize the steam injection rates over the life of a steam-assisted gravity drainage process in a reservoir with gas cap. The parameter sensitivities of the genetic algorithm are studied.
Tristana - la representación de la mujer en la novela de Galdós y la película de Buñuel
Creators: name: Kirtland Grech, Maria Graziella
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Cinema
subject: Romance
subject: Women's Studies
subject: Tristana
subject: Metaphor
subject: Metonomy
subject: Buñuel
subject: Galdós
subject: Film
subject: Novel

description: Esta tesis analiza cómo se construye el sujeto femenino en la novela Tristana de Galdós y la versión fílmica de Buñuel, utilizando las teorías de Elisabeth Bronfen (Over her Dead Body: Death, Femininity and the Aesthetic) y Elizabeth Cowie (Representing Women: Cinema and Psychoanalysis) acerca de la representación de la mujer en la literatura y el cine respectivamente. Basándome en los estudios de Steven Cohan and Linda Shires sobre el análisis de los relatos de ficción y de Christian Metz sobre la metáfora y la metonimia en el cine, analizo una selección de dichas figuras retóricas que son primordiales en la caracterización de Tristana y la evolución de su carácter. Además, el examen de tres oposiciones binarias que se presentan en la película revela información sobre la situación social de la mujer en España antes de la Guerra Civil. A pesar de los cambios en el desarrollo de la historia y los diferentes contextos sociopolíticos, tanto Galdós como Buñuel representan a Tristana de acuerdo con los estereotipos femeninos perpetuados por el sistema patriarcal que dominaban la literatura del siglo XIX y el cine del siglo XX, es decir el ángel del hogar, la mujer monstruo y la mujer caída.
From Koszul duality to Poincaré duality
Creators: name: Dubois-Violette, Michel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Algebra (math.QA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We discuss the notion of Poincaré duality for graded algebras and its connections with the Koszul duality for quadratic Koszul algebras. The relevance of the Poincaré duality is pointed out for the existence of twisted potentials associated to Koszul algebras as well as for the extraction of a good generalization of Lie algebras among the quadratic-linear algebras.
description: Dedicated to Raymond Stora. 27 pages
Il notaio Simone Vatacii: carriera notarile e mobilità sociale a Genova tra Due e Trecento
Creators: name: Bezzina, Denise
Publisher: name: Zenodo
Year: 2018
Subjects: Middle Ages
12th-13th Centuries
Genoa
Notaries
Notariate
Documentation

description: The article reconstructs the biographical profile and activities of notary Simone Vatacii, operative in Genoa from at least the late 1260s to the beginning of the fourteenth century. A member of a family of notaries, Simone worked for both private and institutions and during

his career he managed to build and cultivate relationships with important individuals and families of his contemporary Genoa. Simone’s network of connections seems to have been beneficial also to his son, who was trained to follow his father’s career path, but whom we can observe uniquely as a draper.
Orientation selection of equiaxed dendritic growth by three-dimensional cellular automaton model
Creators: name: Wei, Lei
name: Lin, Xin
name: Wang, Meng
name: Huang, Weidong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: A three-dimensional (3-D) adaptive mesh refinement (AMR) cellular automata (CA) model is developed to simulate the equiaxed dendritic growth of pure substance. In order to reduce the mesh induced anisotropy by CA capture rules, a limited neighbor solid fraction (LNSF) method is presented. An expansion description using two interface free energy anisotropy parameters (\epsilon1, \epsilon2) is used in present 3-D CA model. The dendrite growths with the orientation selection between <100> and <110> are discussed using the different \epsilon1 with \epsilon2=-0.02. It is found that the simulated morphologies by present CA model are as expected from the minimum stiffness criterion.
Fast simulation of truncated Gaussian distributions
Creators: name: Chopin, Nicolas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences
subject: G.3
subject: 65C10

description: We consider the problem of simulating a Gaussian vector X, conditional on the fact that each component of X belongs to a finite interval [a_i,b_i], or a semi-finite interval [a_i,+infty). In the one-dimensional case, we design a table-based algorithm that is computationally faster than alternative algorithms. In the two-dimensional case, we design an accept-reject algorithm. According to our calculations and our numerical studies, the acceptance rate of this algorithm is bounded from below by 0.5 for semi-finite truncation intervals, and by 0.47 for finite intervals. Extension to 3 or more dimensions is discussed.
Credit Risk Pricing via Epstein-Zin Pricing Kernel
Creators: name: Ogunsolu, Mobolaji
Publisher: name: Graduate Studies
Year: 2017
Subjects: Education--Mathematics

description: We present an equilibrium framework for pricing corporate bonds with information delay in an Epstein-Zin setting. As in structural models of credit risk, the default time is modeled as the first hitting time of a default boundary by the unobservable process; the firm's asset value. The observable state variables; log consumption and volatility are affine processes which drive the unobservable firm's value process. The stochastic pricing kernel is expressed in terms of the state variables. The price of a zero-coupon bond is expressed as the solution of a multidimensional partial differential equation which is solved numerically. Our equilibrium price model is also calibrated to fit available corporate bond and consumption data. Finally, we analyze the implications of investor’s preferences and information delay on the credit yield spreads.
Prescription drug utilization in pregnancy : a systematic review and population-based study in British Columbia, Canada
Creators: name: Daw, Jamie Roberta
Publisher: name: University of British Columbia
Year: 2011

description: Background – There is little evidence on the patterns of prescription drug use during pregnancy in Canada. To address this knowledge gap, the primary objectives of this thesis were to: 1) systematically review published antenatal drug utilization studies, and 2) provide the first Canadian evidence on prescription drug utilization across the pregnancy period, overall, by therapeutic category and fetal risk classification, in the province of British Columbia (BC). Methods - This thesis is comprised of two original studies. The first, a systematic review of antenatal drug utilization studies, was conducted according to an a priori protocol and included a double independent review process for the selection of articles and data abstraction. The second, a population-based empirical study in BC, was based on pharmacy claims records linked to maternal hospital records. The period of pregnancy was constructed from the recorded gestational age and prescriptions filled before, during, and after this period were analyzed. Drugs were classified according to the World Health Organization Anatomical Therapeutic Classification System and US Food and Drug Administration risk categories indicating potential for fetal harm (categories D and X). Results – Published drug utilization studies reveal wide variation in estimates of overall prescription drug use in pregnancy (27% to 93% excluding vitamins and minerals). However, estimates are difficult to compare due to differences in methodology, data sources, classification of prescription medicines, and inadequate reporting. In BC, the majority of pregnant women (63%) filled at least one prescription in pregnancy and approximately 1 in 12 filled a prescription for a drug with potential risks (category D or X). The most commonly used medicines were antiinfectives, doxylamine, dermatologicals, and drugs acting on the nervous system. Conclusion - A methodological framework and template for reporting exposures in pregnancy should be developed to improve the quality and comparability of antenatal drug utilization studies. Evaluation of medicines with unknown risks that are commonly used in pregnancy should be a priority for pharmacoepidemiological research. The use of drugs with potential risks should be targeted by programs to improve appropriate prescribing in pregnancy.
Studies on Funnelbeaker-Westgroup in European Comparison
Creators: name: , Menne
Publisher: name: Zenodo
Year: 2014
Subjects: Archaeology
Neolithic
Funnelbeaker
Pottery
Lower Saxony
Megaliths

description: The PhD project 'Studies on Funnelbeaker-Westgroup in European Comparison', which is part of the Graduate School 'Human Development in Landscapes' of the Christian-Albrechts-University of Kiel, focuses on the supra-regional study of the development of landscapes during the Neolithic in northern Europa with paying special attention to socio-economic changes.
Coherent phonon dynamics at the martensitic phase transition of Ni_2MnGa
Creators: name: Mariager, S. O.
name: Caviezel, A.
name: Beaud, P.
name: Quitmann, C.
name: Ingold, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use time-resolved optical reflectivity to study the laser stimulated dynamics in the magnetic shape memory alloy Ni_2MnGa. We observe two coherent optical phonons, at 1.2 THz in the martensite phase and at 0.7 THz in the pre-martensite phase, which we interpret as a zone-folded acoustic phonon and a heavily damped amplitudon respectively. In the martensite phase the martensitic phase transition can be induced by a fs laser pulse on a timescale of a few ps.
description: 3 figures
Translocation and Memory:Cultural Experiences as Artistic influence
Creators: name: Zapata Garces, Jorge Esteban
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Fine Arts
subject: Translocation, Memory

description: I construct two dimensional and three dimensional collages where the idea of identity and memory are conceived through the use of cultural signs. This paper discusses how reciprocal cultural experiences in different geographic locations like Calgary, Alberta and Antioquia, Colombia, have nurtured creative art production. Drawing on multiple theories of signs, I interrelate cultural memory and identity in response to my experience in a new location. Personal development through the experience of travel is a source for artistic inspiration. Through making collage, whereby materials and images are combined from different contexts, I establish a communication via cultural signs that derive from personal associations with geography and culture. As a “detective“ of my own identitiy, the evidence of semantic memory in my artistic practice, reafirms the communicative function of art.
Trajectories of the S-matrix poles in Salamon-Vertse potential
Creators: name: Rácz, Anett
name: Salamon, Péter
name: Vertse, Tamás
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The trajectories of S-matrix poles are calculated in the finite-range phenomenological potential introduced recently by P. Salamon and T. Vertse (SV). The trajectories of the resonance poles in this SV potential are compared to the corresponding trajectories in a cut-off Woods-Saxon (WS) potential for l>0. The dependence on the cut-off radius is demonstrated. The starting points of the trajectories turn out to be related to the average ranges of the two terms in the SV potential.
Real-time 3D Optical Projection Tomography using Deep Learning
Creators: name: Obando, Marcos
name: Bassi, Andrea
name: Ducros, Nicolas
name: German, Mato
name: Correia, Teresa
Publisher: name: Zenodo
Year: 2021
Subjects: Optical Projection Tomography
Depp learning
image reconstruction
mesoscopic imaging
compressed sensing

description: Optical projection tomography is the optical analogue of X-ray tomography, a 3D mesoscopic imaging modality of the optical attenuation or fluorescence intensity distribution within transparent samples. As current limitations, the requirement of several hundreds of angular projections for filtered backprojection reconstruction leads to acquisition times of several minutes. While iterative methods allow to reconstruct images from sparsely sampled datasets, they convey several seconds, thus precluding from real-time reconstruction. Here we present a model-based unrolled network with a CNN as a regularization prior, trained on four zebrafish datasets. Based on an alternating algorithm, our network rapidly reconstructs high quality images from few projections within milliseconds. Youtube: https://youtu.be/4sNyq7zFEC8
description: This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 867450. (OPTIMAR: OPTical Imaging of Molecular and signalling Activity in Real-time: application to flatfish metamorphosis, https://cordis.europa.eu/project/id/867450). The project was also supported by NVIDIA GPU hardware grant and FCT - Foundation for Science and Technology through projects UIDB/04326/2020, UIDP/04326/2020 and LA/P/0101/2020.
Chaotic Phase Synchronization in Bursting-neuron Models Driven by a Weak Periodic Force
Creators: name: Ando, Hiroyasu
name: Suetani, Hiromichi
name: Kurths, Juergen
name: Aihara, Kazuyuki
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate the entrainment of a neuron model exhibiting a chaotic spiking-bursting behavior in response to a weak periodic force. This model exhibits two types of oscillations with different characteristic time scales, namely, long and short time scales. Several types of phase synchronization are observed, such as 1 : 1 phase locking between a single spike and one period of the force and 1 : l phase locking between the period of slow oscillation underlying bursts and l periods of the force. Moreover, spiking-bursting oscillations with chaotic firing patterns can be synchronized with the periodic force. Such a type of phase synchronization is detected from the position of a set of points on a unit circle, which is determined by the phase of the periodic force at each spiking time. We show that this detection method is effective for a system with multiple time scales. Owing to the existence of both the short and the long time scales, two characteristic phenomena are found around the transition point to chaotic phase synchronization. One phenomenon shows that the average time interval between successive phase slips exhibits a power-law scaling against the driving force strength and that the scaling exponent has an unsmooth dependence on the changes in the driving force strength. The other phenomenon shows that Kuramoto's order parameter before the transition exhibits stepwise behavior as a function of the driving force strength, contrary to the smooth transition in a model with a single time scale.
Microwave state transfer and adiabatic dynamics of magnetically trapped polar molecules
Creators: name: Stuhl, Benjamin K.
name: Yeo, Mark
name: Sawyer, Brian C.
name: Hummon, Matt
name: Ye, Jun
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cold and ultracold polar molecules with nonzero electronic angular momentum are of great interest for studies in quantum chemistry and control, investigations of novel quantum systems, and precision measurement. However, in mixed electric and magnetic fields, these molecules are generically subject to a large set of avoided crossings among their Zeeman sublevels; in magnetic traps, these crossings lead to distorted potentials and trap loss from electric bias fields. We have characterized these crossings in OH by microwave-transferring trapped OH molecules from the upper |f; M = +3/2> parity state to the lower |e; +3/2> state and observing their trap dynamics under an applied electric bias field. Our observations are very well described by a simple Landau-Zener model, yielding insight to the rich spectra and dynamics of polar radicals in mixed external fields.
description: 5 pages, 4 figures plus supplementary material
title: Decrease of Markers Related to Bone Erosion in Serum of Patients with Musculoskeletal Disorders after Serial Low-Dose Radon Spa Therapy
Creators: name: Cucu, Aljona
name: Shreder, Kateryna
name: Kraft, Daniela
name: Rühle, Paul Friedrich
name: Klein, Gerhart
name: Thiel, Gerhard
name: Frey, Benjamin
name: Gaipl, Udo S.
name: Fournier, Claudia
Publisher: name: Frontiers Media S.A.
Year: 2023

description: Musculoskeletal disorders (MSDs) are the most frequent cause of disability in Europe. Reduced mobility and quality of life of the patients are often associated with pain due to chronic inflammation. The inflammatory process, accompanied by a destruction of the cartilage and bone tissue, is discussed as a result of (A) the infiltration of immune cells into the joints, (B) an altered homeostasis of the joint cavity (synovium) with a critical role of bone remodeling cells, and (C) release of inflammatory factors including adipokines in the arthritic joint. In addition to the classical medication, low-dose radiation therapy using photons or radon spa treatments has shown to reduce pain and improve the mobility of the patients. However, the cellular and molecular mechanisms of anti-inflammatory effects of radon are yet poorly understood. We analyzed blood and serum samples from 32 patients, suffering from MSDs, who had been treated in the radon spa in Bad Steben (Germany). Before and after therapy, we measured the levels of markers related to bone metabolism (collagen fragments type-1, cartilage oligomeric matrix protein, receptor activator of NFκB ligand, and osteoprotegerin) in the serum of patients. In addition, adipokines related to inflammation (visfatin, leptin, resistin, and adiponectin) were analyzed. Some of these factors are known to correlate with disease activity. Since T cells play an important role in the progression of the disease, we further analyzed in blood samples the frequency of pro- and anti-inflammatory T cell subpopulations (CD4⁺IL17⁺ T cells and CD4⁺FoxP3⁺ regulatory T cells). Overall, we found a decrease of collagen fragments (CTX-I), indicating decreased bone resorption, presumably by osteoclasts, in the serum of MSD patients. We also observed reduced levels of visfatin and a consistent trend toward an increase of regulatory T cells in the peripheral blood, both indicating attenuation of inflammation. However, key proteins of bone metabolism were unchanged on a systemic level, suggesting that these factors act locally after radon spa therapy of patients with MSDs.
A thermodynamic characterization of future singularities?
Creators: name: Pavon, Diego
name: Zimdahl, Winfried
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this Letter we consider three future singularities in different Friedmann-Lema\^ıtre-Robertson-Walker scenarios and show that the universe departs more and more from thermodynamic equilibrium as the corresponding singularity is approached. Though not proven in general, this feature may characterize future singularities of homogeneous and isotropic cosmologies.
description: Key words: mathematical cosmology, singularities, thermodynamics; 11 pages, to be publised in Physics Letters B
title: L'espoir dans l'attente d'une transplantation pulmonaire ou cardiaque
title: L'espoir dans l'attente d'une transplantation pulmonaire ou cardiaque
titleType: AlternativeTitle
Creators: name: Cochard, Mélissa
name: Mosimann, Emilia
Publisher: name: Unknown
Year: 0
Subjects: subject: Transplantation pulmonaire
subject: Transplantation cardiaque
subject: Soins infirmiers

description: La période d’attente pour les patients inscrits sur liste d’attente pour une transplantation pulmonaire ou cardiaque est de plus en plus significative. Leurs expériences durant cette attente peuvent être vécues de manière complexe. L’espoir est un sentiment qui leur permet d’améliorer cette expérience de vie difficile. Ces patients sont pris en charge par le service de transplantation qui comprend des professionnels spécialisés dans ce domaine. Toujours est-il que ces patients souffrent également d’une maladie chronique qui les amène à vivre des séjours d’hospitalisation répétés.