cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Conformation changes and protein folding induced by ϕ^4 interaction
Creators: name: Januar, M.
name: Sulaiman, A.
name: Handoko, L. T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A model to describe the mechanism of conformational dynamics in protein based on matter interactions using lagrangian approach and imposing certain symmetry breaking is proposed. Both conformation changes of proteins and the injected non-linear sources are represented by the bosonic lagrangian with an additional ϕ^4 interaction for the sources. In the model the spring tension of protein representing the internal hydrogen bonds is realized as the interactions between individual amino acids and nonlinear sources. The folding pathway is determined by the strength of nonlinear sources that propagate through the protein backbone. It is also shown that the model reproduces the results in some previous works.
description: 8 pages, Proceeding of the Conference in Honour of Murray Gell-Mann's 80th Birthday : Quantum Mechanics, Elementary Particles, Quantum Cosmology, Complexity (2011) 472-479
Targeting Selective Receptor Tyrosine Kinases in Refractory Embryonal Tumors of Childhood
Creators: name: Singh, Anjali
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Oncology
subject: Pediatric Oncology

description: Embryonal tumors are a collection of biologically heterogeneous malignancies and the exact cellular origin of these tumors is not known. Neuroblastoma (NB) and atypical teratoid/rhabdoid tumor (AT/RT) are highly malignant tumors of embryonal origin that primarily affect infants and young children. Neuroblastoma is the most common type of extra cranial solid tumor in children. In the case of AT/RT, the survival rate of children affected by this disease is the lowest when compared to all embryonal tumors. Despite intensifying multimodal treatments, children affected with refractory AT/RT and NB have unacceptably high treatment failure and mortality rates. To improve the clinical outcome of these malignancies, it is important to identify the key molecules and cellular pathways responsible for tumor progression, survival and invasion. Many childhood cancers have high activation levels of selective receptor tyrosine kinase signaling pathways. Activation of these signaling pathways promotes cell proliferation, differentiation and cell survival. Therefore, receptor tyrosine kinases (RTKs) have become attractive therapeutic targets and the use of small molecule kinase inhibitors to block their signal transduction functions has led to the discovery of a number of novel therapeutics agents. This research presents the relevant background information on two pediatric neoplasms that we have selected to study and aims to provide the rationale for the development of useful new therapies for their treatment. Presented in details are the data with respect to the establishment of a screening approach to identify effective therapeutic agents with information on target validation and target modulation activities that can be utilized to design future clinical trials for these cancers.
Conformal anomaly of super Wilson loop
Creators: name: Belitsky, A. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Classically supersymmetric Wilson loop on a null polygonal contour possesses all symmetries required to match it onto non-MHV amplitudes in maximally supersymmetric Yang-Mills theory. However, to define it quantum mechanically, one is forced to regularize it since perturbative loop diagrams are not well-defined due to presence of ultraviolet divergences stemming from integration in the vicinity of the cusps. A regularization that is adopted by practitioners by allowing one to use spinor helicity formalism, on the one hand, and systematically go to higher orders of perturbation theory is based on a version of dimensional regularization, known as Four-Dimensional Helicity scheme. Recently it was demonstrated that its use for the super Wilson loop at one loop breaks both conformal symmetry and Poincare supersymmetry. Presently, we exhibit the origin for these effects and demonstrate how one can undo this breaking. The phenomenon is alike the one emerging in renormalization group mixing of conformal operators in conformal theories when one uses dimensional regularization. The rotation matrix to the diagonal basis is found by means of computing the anomaly in the Ward identity for the conformal boost. Presently, we apply this ideology to the super Wilson loop. We compute the one-loop conformal anomaly for the super Wilson loop and find that the anomaly depends on its Grassmann coordinates. By subtracting this anomalous contribution from the super Wilson loop we restore its interpretation as a dual description for reduced non-MHV amplitudes which are expressed in terms of superconformal invariants.
description: 20 pages, 3 figures
A many-electron tight binding method for the analysis of quantum dot systems
Creators: name: Nielsen, Erik
name: Rahman, Rajib
name: Muller, Richard P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a method which computes many-electron energies and eigenfunctions by a full configuration interaction which uses a basis of atomistic tight-binding wave functions. This approach captures electron correlation as well as atomistic effects, and is well suited to solid state quantum dot systems containing few electrons, where valley physics and disorder contribute significantly to device behavior. Results are reported for a two-electron silicon double quantum dot as an example.
description: 9 pages, 6 figures
High Repetition-Rate Wakefield Electron Source Generated by Few-millijoule, 30 femtosecond Laser Pulses on a Density Downramp
Creators: name: He, Z. -H.
name: Hou, B.
name: Easter, J. H.
name: Krushelnick, K.
name: Nees, J. A.
name: Thomas, A. G. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We report on an experimental demonstration of laser wakefield electron acceleration using a sub-TW power laser by tightly focusing 30-fs laser pulses with only 8 mJ pulse energy on a 100 μm scale gas target. The experiments are carried out at an unprecedented 0.5 kHz repetition rate, allowing "real time" optimization of accelerator parameters. Well-collimated and stable electron beams with a quasi-monoenergetic peak in excess of 100 keV are measured. Particle-in-cell simulations show excellent agreement with the experimental results and suggest an acceleration mechanism based on electron trapping on the density downramp, due to the time varying phase velocity of the plasma waves.
description: 4 pages, 5 figures, submitted to Phys. Rev. Lett
A General Inverse Problem for the Growth-Fragmentation Equation
Creators: name: Jauffret, Marie Doumic
name: Tine, Leon M. Null
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The growth-fragmentation equation arises in many different contexts, ranging from cell division, protein polymerization, biopolymers, neurosciences etc. Direct observation of temporal dynamics being often difficult, it is of main interest to develop theoretical and numerical methods to recover reaction rates and parameters of the equation from indirect observation of the solution. Following the work done in (Perthame, Zubelli, 2006) and (Doumic, Perthame, Zubelli, 2009) for the specific case of the cell division equation, we address here the general question of recovering the fragmentation rate of the equation from the observation of the time-asymptotic solution, when the fragmentation kernel and the growth rates are fully general. We give both theoretical results and numerical methods, and discuss the remaining issues.
title: Landammann Nagel
title: [Jakob Nagel, 1790-1841]
titleType: Subtitle
title: ein Nekrolog
titleType: Subtitle
Creators: name: (:Unkn) Unknown
Publisher: name: Zentralbibliothek Zürich
Year: 1841
Subjects: subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Nagel, Jakob
subject: Teufen (Appenzell Ausserrhoden)

description: In: Appenzellisches Monatsblatt, 1841, Nummern 7-9
Steam Injection Strategies for Bitumen Recovery from an Element of the Grosmont Carbonate Reservoir
Creators: name: Song, Qiuyue
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Engineering--Petroleum
subject: Engineering--Operations Research
subject: carboante reservoir
subject: Grosmont
subject: bitumen recovery
subject: Steam Assisted Gravity Drainage
subject: Cyclic steam stimulation
subject: steamflood

description: The bitumen resource in the Grosmont carbonate deposits in Alberta is over 400 billion barrels, but hitherto a commercial recovery scheme remains elusive. This study employs numerical simulation for several steam-based recovery schemes and proposes steam injection strategies. Selected simulation results were analyzed using analytical methods. A representative geological model of Grosmont was used to examine numerically several steam injection schemes, which included: vertical or horizontal well cyclic, SAGD, and conventional pattern steamfloods. Steamflooding, using vertical steam injectors and a horizontal producer, is proposed for the Grosmont carbonate reservoir to overcome shortcomings of other schemes. The vertical well injector-horizontal well producer steamflood gave the same recovery performance 21 months earlier than the horizontal well cyclic. Analytical methods were used to interpret physical mechanisms operating in steam injection processes for this reservoir, including the steam over-injection, steam override, condensate formation at the steam front and water flashing.
Application of a damped Locally Optimized Combination of Images method to the spectral characterization of faint companions using an Integral Field Spectrograph
Creators: name: Pueyo, Laurent
name: Crepp, Justin R.
name: Vasisht, Gautam
name: Brenner, Douglas
name: Oppenheimer, Ben R.
name: Zimmerman, Neil
name: Hinkley, Sasha
name: Parry, Ian
name: Beichman, Charles
name: Hillenbrand, Lynne
name: Roberts, Lewis C.
name: Dekany, Richard
name: Shao, Mike
name: Burruss, Rick
name: Bouchez, Antonin
name: Roberts, Jenny
name: Soummer, Rémi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: High-contrast imaging instruments are now being equipped with integral field spectrographs (IFS) to facilitate the detection and characterization of faint substellar companions. Algorithms currently envisioned to handle IFS data, such as the Locally Optimized Combination of Images (LOCI) algorithm, rely upon aggressive point-spread-function (PSF) subtraction, which is ideal for initially identifying companions but results in significantly biased photometry and spectroscopy due to unwanted mixing with residual starlight. This spectro-photometric issue is further complicated by the fact that algorithmic color response is a function of the companion's spectrum, making it difficult to calibrate the effects of the reduction without using iterations involving a series of injected synthetic companions. In this paper, we introduce a new PSF calibration method, which we call "damped LOCI", that seeks to alleviate these concerns. By modifying the cost function that determines the weighting coefficients used to construct PSF reference images, and also forcing those coefficients to be positive, it is possible to extract companion spectra with a precision that is set by calibration of the instrument response and transmission of the atmosphere, and not by post-processing. We demonstrate the utility of this approach using on-sky data obtained with the Project 1640 IFS at Palomar. Damped-LOCI does not require any iterations on the underlying spectral type of the companion, nor does it rely upon priors involving the chromatic and statistical properties of speckles. It is a general technique that can readily be applied to other current and planned instruments that employ IFS's.
description: Accepted to the Astrophysical Journal Supplements
Analytic description of Airy-type beams when truncated by finite apertures
Creators: name: Zamboni-Rached, Michel
name: Nóbrega, Kleber Zuza
name: Dartora, César Augusto
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper, we have developed an analytic method for describing Airy-Type beams truncated by finite apertures. This new approach is based on suitable superposition of exponentially decaying Airy beams. Regarding both theoretical and numerical aspects, the results here shown are interesting because they have been quickly evaluated through a simple analytic solution, whose characteristics of propagation has agreed with those already published in literature through the use of numerical methods. To demonstrate the method's potentiality, three different truncated beams have been analyzed: ideal Airy, Airy-Gauss and Airy-Exponential.
description: 11 pages, 6 figures
Fluid QCD approach for quark-gluon plasma in stellar structure
Creators: name: Djun, T. P.
name: Handoko, L. T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The quark-gluon plasma in stellar structure is investigated using the fluid-like QCD approach. The classical energy momentum tensor relevant for high energy and hot plasma having the nature of fluid bulk of gluon sea is calculated within the model. The transition of gluon field from point particle field inside stable hadrons to relativistic fluid field in hot plasma and vice versa is briefly discussed. The results are applied to construct the equation of state using the Tolman--Oppenheimer--Volkoff equation to describe the hot plasma dominated stellar structure.
description: 7 pages, Proceeding of the Conference in Honour of Murray Gell-Mann's 80th Birthday : Quantum Mechanics, Elementary Particles, Quantum Cosmology, Complexity (2011) 419-425
Qubit relaxation from evanescent-wave Johnson noise
Creators: name: Langsjoen, Luke S.
name: Poudel, Amrit
name: Vavilov, Maxim G.
name: Joynt, Robert
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In many quantum computer architectures, the qubits are in close proximity to metallic device elements. Metals have a high density of photon modes, and the fields spill out of the bulk metal because of the evanescent-wave component. Thus thermal and quantum electromagnetic Johnson- type noise from metallic device elements can decohere nearby qubits. In this paper we use quantum electrodynamics to compute the strength of this evanescent-wave Johnson noise as a function of distance z from a metallic half-space. Previous treatments have shown unphysical divergences at z = 0. We remedy this by using a proper non-local dielectric function. Decoherence rates of local qubits are proportional to the magnitude of electric or magnetic correlation functions evaluated at the qubit position. We present formulas for the decoherence rates. These formulas serve as an important constraint on future device architectures.
description: 5 pages, 4 figures
On numerical methods and error estimates for degenerate fractional convection-diffusion equations
Creators: name: Cifani, Simone
name: Jakobsen, Espen R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: First we introduce and analyze a convergent numerical method for a large class of nonlinear nonlocal possibly degenerate convection diffusion equations. Secondly we develop a new Kuznetsov type theory and obtain general and possibly optimal error estimates for our numerical methods - even when the principal derivatives have any fractional order between 1 and 2! The class of equations we consider includes equations with nonlinear and possibly degenerate fractional or general Levy diffusion. Special cases are conservation laws, fractional conservation laws, certain fractional porous medium equations, and new strongly degenerate equations.
Desafios em Saúde - do Financiamento à Mudança de Paradigma
Creators: name: ., Revista Portuguesa De Farmacoterapia
Publisher: name: Revista Portuguesa de Farmacoterapia
Year: 2018

description: No dia 6 de março realizou-se durante a tarde a reunião da Revista Portuguesa de Farmacoterapia subordinada ao tema “Desafios em Saúde, do Financiamento à Mudança de Paradigma”, na qual se reuniram diversos profissionais das áreas da saúde, economia e gestão.
description: Revista Portuguesa de Farmacoterapia, v. 10 n. 2-3 (2018): Abril; Julho
An Academic Analysis of the Notion of Biopower.pdf
Creators: name: abraham, agoni
Publisher: name: figshare
Year: 2021
Subjects: subject: 220319 Social Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Philosophy
subject: 220208 History and Philosophy of the Social Sciences

description: From the time of the ancient and medieval political scholars, society has been shaped by the findings of individuals on specific happenings of nature. Man has constantly tried to explain the logic behind nature; the birth of Social and Political theory. From Socrates through to Plato, Aristotle, Cicero, and others, there has been a conscious effort to sustain debates that seek to unveil what is true about a phenomenon. Concepts such as Justice, Democracy, Freedom among others have been grappled with by these scholars and for centuries, man is as yet to arrive at a conclusive explanation of any of them. Like other concepts, the discourse on power has traveled through time to what we have in the present day. Hobbesian theories on power revealed that only the strongest could use their power to survive in the state of nature which was solitary, poor, nasty, brutish, and short. His arguments on the need for power were extended in the book, The Leviathan where he preached for there to be one sovereign ruler who would be able to lead the people without fear of favor, however, on the people’s consent (British Library, 2021). Nonetheless, one of the scholars whose literary work on Power has been the fulcrum of academic debates as well as the trigger for the birth of other social concepts is the French philosopher, Mitchel Foucault. The writings of Georgio Agamben, Roberto Esposito, Antonio Negri, and Michael Hardt are all responses to the literature of Foucault. With a strong influence on a wide range of humanistic and social science disciplines, Foucault is responsible for the prevalence of concepts such as Biopolitics, Biopower, Necro-politics, governmentality, and subjectivity. This essay thus, seeks to identify what is definitive of Governmentality, to what extent has it influenced contemporary power relations? It will also examine the intricacies of Biopolitics while trying to establish a link between Governmentality and Biopolitics. Examples will be drawn from a wide range of sources in order to explain the tenets of these social concepts. Meanwhile, it will, first of all, demystify the difference between Biopower and Biopolitics.
A short introduction to Generalized Hydrodynamics
Creators: name: Essler, Fabian H L
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: These are notes based on lectures given at the 2021 summer school on Fundamental Problems in Statistical Physics XV. Their purpose is to give a very brief introduction to Generalized Hydrodynamics, which provides a description of the large scale structure of the dynamics in quantum integrable models. The notes are not meant to be comprehensive or provide an overview of all relevant literature, but rather give an exposition of the key ideas for non-experts, using a simple fermionic tight-binding model as the main example.
description: 24 pages, 6 figures
Guía de técnicas y consejos para un resultado óptimo en tu grabación audiovisual
Creators: name: Bogas Ríos, María José
Publisher: name: Zenodo
Year: 2025
Subjects: material docente
Lenguaje audiovisual
comunicación digita
proyectos en vídeo
educación superior
competencias transversales
producción audiovisual
realización audiovisual
edición de vídeo
alfabetización mediática

description: Este material docente ha sido elaborado como recurso de apoyo para el desarrollo de competencias comunicativas en entornos digitales, dirigido a estudiantes del Grado en Administración y Dirección de Empresas. La guía ofrece una introducción clara, práctica y accesible al lenguaje audiovisual, con el objetivo de mejorar la calidad técnica y expresiva de las presentaciones en vídeo realizadas por el alumnado.

El documento recorre las principales fases de un proyecto audiovisual (idea, guion, preproducción, grabación, montaje), e incluye técnicas de composición de imagen, planificación de planos, continuidad visual y consejos prácticos de producción. Se incorporan además ejemplos visuales y enlaces a piezas de referencia que facilitan la comprensión autónoma de los conceptos.

Este material ha sido utilizado como parte de una estrategia de innovación educativa centrada en el aprendizaje activo, la producción de contenidos digitales y la alfabetización mediática, dentro de un proyecto interdisciplinar en la Universidad Pablo de Olavide y el Centro Universitario San Isidoro (adscrito a la Universidad Pablo de Olavide).
Dynamical chiral symmetry breaking and the fermion--gauge-boson vertex
Creators: name: Bashir, A.
name: Bermudez, R.
name: Chang, L.
name: Roberts, C. D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a workable model for the fermion-photon vertex, which is expressed solely in terms of functions that appear in the fermion propagator and independent of the angle between the relative momenta, and does not explicitly depend on the covariant-gauge parameter. It nevertheless produces a critical coupling for dynamical chiral symmetry breaking that is practically independent of the covariant-gauge parameter and an anomalous magnetic moment distribution for the dressed fermion that agrees in important respects with realistic numerical solutions of the inhomogeneous vector Bethe-Salpeter equation.
description: 8 pages, 2 figures
Fracture and resistance : looking through the archive at the anti-Asiatic riot of 1907
Creators: name: Dziedziejko, Aldona
Publisher: name: University of British Columbia
Year: 2010

description: At the old City Hall in Vancouver on September 7th, 1907 the Asiatic Exclusion League led a demonstration against the increasing influx of Japanese immigrants. In the aftermath of this race riot, along with witness interviews and assessments by civic officials and architects, photographs of damaged Japanese businesses played a significant role in the gathering and presentation of the evidence used in the preparation of claims for damages. An anonymous photographer captured every business façade with an attention to the damages and, in most cases, posed the claimants in the photographs. Historians have offered linear accounts of the riot and Japanese presence in Vancouver, bringing to the fore the issues of diplomacy, ethnicity and heritage while ignoring the visual and spatial dimensions of this urban conflict. My project focuses on the spatial and visual implications for understanding the riot photographs. I will attempt to bring the riot photographs out of the silence of the archive by locating the mechanisms of interpretation that animate and destabilize the series, and, in so doing, to offer a “stereoscopic reading” of them. I define “stereoscopic reading” as a three-dimensional interpretation with a visual focus aimed at setting the photographs in motion against their static and secondary status as mere evidence. I will complicate the one-dimensional documentary status of the series with the aid of theorists who find their vocabulary in ethics, psychoanalysis and trauma remembrance. Significantly, these photographs have the capacity to engage the nature of the social performance of space and its users. The visual strategies employed by the photographer suggest to the viewer that the proprietors in the photos are focal, and the damaged buildings serve as a backdrop to their performance of ownership and community, counter to the original forensic purpose of the series. These photographs comprise a key element in the discussion of an encounter of agents during, and after, a violent event as well as the incorporation of this photographic representation into histories and archives over time in connection with social and ethical dimension of remembrance and responsibility.
Lyonetia ledi Wocke 1859
Creators: name: Wieser, Christian
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Lyonetiidae
Lyonetia
Lyonetia ledi

description: Lyonetia ledi Wocke, 1859
Ein äusserst erstaunlicher Fund wurde mittels Barcode (Barcodekenndaten in BOLD: KLM Lep 12335/LEAST1580-18) erkannt (leg. Wieser, det. BOLD). Lyonetia ledi ist ausschliesslich als Art von Hochmooren bekannt und lebt im Larvenstadium minierend in den Blättern von Rhododendron palustre (syn. Ledum palustre) dem Sumpfporst und Myrica gale, dem Gagelstrauch (BENGTSON & JOHANSSON 2011). Beide Pflanzenarten sind aus Kärnten nicht bekannt (HARTL et al. 1992)! Weiters ist der Fundort im Wacholderhain bei Stein im Oberen Drautal fernab eines passenden Lebensraumes. Bisher ist kein Fund dieser Kleinschmetterlingsart südlich des Alpenhauptkammes bekannt geworden (mündl. Mitteilung P. Huemer).
Die Artzugehörigkeit ist laut Barcode unbestreitbar. Etiketten- und Fundortverwechslung können nach detaillierter Recherche ausgeschlossen werden. Es gab keinerlei Aufsammlungen durch den Autor in potentiellen Vorkommensgebieten im in Frage kommenden Zeitraum und es gibt keine Sammlungsbestände von L. ledi im Landesmuseum Kärnten. Weitere Erhebungen am Fundort ergaben bisher keinen zusätzlichen Nachweis. Es ist dies ein ähnlich schwer erklärbarer Fund wie von der ebenfalls im Oberen Drautal bei Kleblach in einem Einzelexemplar nachgewiesenen Stathmopodidae Cuprina fuscella (WIESER 2004). Weitere Nachweise wären wünschenswert, um den Fund sicher bestätigen zu können.
description: Published as part of Wieser, Christian, 2017, Weitere Erstfunde und bemerkenswerte Schmetterlingsnachweise aus Kärnten (Insecta: Lepidoptera), pp. 285-291 in Rudolfinum – Jahrbuch des Landesmuseums für Kärnten 2017 on page 287, DOI: 10.5281/zenodo.5725317
A Fuzzy Model for Analogical Problem Solving
Creators: name: Voskoglou, Michael Gr.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: 03E72, 97C30

description: In this paper we develop a fuzzy model for the description of the process of Analogical Reasoning by representing its main steps as fuzzy subsets of a set of linguistic labels characterizing the individuals' performance in each step and we use the Shannon- Wiener diversity index as a measure of the individuals' abilities in analogical problem solving. This model is compared with a stochastic model presented in author's earlier papers by introducing a finite Markov chain on the steps of the process of Analogical Reasoning. A classroom experiment is also presented to illustrate the use of our results in practice.
description: 10 pages, 1 Table
VII Reunião Anual da Revista Portuguesa de Farmacoterapia «Controvérsias com Medicamentos»
Creators: name: ., Revista Portuguesa De Farmacoterapia
Publisher: name: Revista Portuguesa de Farmacoterapia
Year: 2018

description: A Reunião Anual Controvérsias com Medicamentos teve lugar no dia 19 de maio no Lagoas Park Hotel. Deu início à sessão o Diretor da Revista Portuguesa de Farmacoterapia (RPF), o Dr. José Aranda da Silva, agradecendo aos participantes e patrocinadores. Passou o testemunho a Sérgio Vilão, editor-chefe da RPF, que salientou a pertinência dos temas selecionados para debate e o relevante contributo que se espera das intervenções, designadamente no esclarecimento de temas como a reavaliação de medicamentos no âmbito da atuação do SiNATS, entre outros.
description: Revista Portuguesa de Farmacoterapia, v. 10 n. 2-3 (2018): Abril; Julho
Depositional Processes and Facies Variability in Organic-rich Mudstones of the Colorado Group, West-central, Alberta, Canada
Creators: name: Zajac, Nicholas Alexander
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geophysics

description: The Early Cenomanian to Early Turonian Fish Scales, Belle Fourche and Second White Specks formations across southern and central Alberta, comprising the lower portion of the Colorado Group, were deposited across a broad shelf setting during the Mowry Transgressive-Regressive Cycle and the transgressive portion of the Greenhorn Transgressive-Regressive Cycle. They are composed of organic-rich, mixed siliciclastic and calcareous mudstones deposited under the influence of changing paleooceanographic conditions and sediment sources within the Western Interior Seaway (WIS). Based on an understanding of sediment transport mechanisms across shelf environments, sedimentological evidence of mudstones comprising the Colorado Group suggests influences by geostrophic bottom currents. Allomembers defined within a complex stratigraphic framework of the Second White Specks Formation reveals significant lateral facies changes likely affected by subtle changes in water depth. Lastly, the spatial and temporal distribution of facies is a result of sediment reworking processes across a low gradient shelf.
Regenerative and Adaptive schemes Based on Network Coding for Wireless Relay Network
Creators: name: Hassan, Ahmed Hassan M.
name: Dai, Bin
name: Huang, Benxiong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Recent technological advances in wireless communications offer new opportunities and challenges for relay network.To enhance system performance, Demodulate-Network Coding (Dm-NC) scheme has been examined at relay node; it works directly to De-map the received signals and after that forward the mixture to the destination. Simulation analysis has been proven that the performance of Dm-NC has superiority over analog-NC. In addition, the Quantize-Decode-NC scheme (QDF-NC) has been introduced. The presented simulation results clearly provide that the QDF-NC perform better than analog-NC. The toggle between analogNC and QDF-NC is simulated in order to investigate delay and power consumption reduction at relay node.
description: 11 pages, 8 figures, International Journal of Computer Networks & Communications (IJCNC), Vol.4, No.3, May 2012
Proton decay in 5D SU(6) GUT with orbifold S^1/Z_2 breaking in Scherk-Schwarz mechanism
Creators: name: Hartanto, A.
name: Zen, F. P.
name: Kosasih, J. S.
name: Handoko, L. T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Proton decay within 5-dimensional SU(6) GUT with orbifold S^1/Z_2 breaking is investigated using Scherk-Schwarz mechanism. It is shown that in the model neither leptoquark like heavy gauge bosons nor violation of baryon number conservation are allowed due to the orbifold breaking parity splitting. These results prevent too short proton lifetime within the model.
description: 6 pages, Proceeding of the Conference in Honour of Murray Gell-Mann's 80th Birthday : Quantum Mechanics, Elementary Particles, Quantum Cosmology, Complexity (2011) 544-549
Permeability Characterization and Prediction in a Tight Oil Reservoir, Edson Field, Alberta
Creators: name: Di, Jianwei
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Petroleum
subject: permeability prediction
subject: tight Cardium Formation, Edson Field
subject: well log analysis
subject: NMR log
subject: probe and whole core permeability

description: Extremely low and heterogeneous permeability is an important characteristic of tight oil reservoirs and poses major challenges to predict. The aim of this work is to develop a permeability predictor based on a tight area of the Cardium Formation, Edson Field, Alberta using log and core measurements from one well. Experimental design analysis indicates that the deep resistivity, GR, and SGR logs show stronger correlation with permeability than other conventional wireline measurements. We also tested a literature permeability estimation model designed for tight formations using conventional well logs which worked better in the shaly siltstone (R2 = 0.94) than the shale and conglomerate (R2 < 0.5) facies. Among the less conventional logs run in this well, we used the NMR log to predict permeability. A pore size-related lithofacies model was built based on the T2 spectrum decomposition. It gave accurate lithofacies proportion estimates based on our core analysis and data from published studies. Integrating the NMR analysis with probe permeability, our approach provides a ‘bridge’ to connect the permeability between the probe scale (<1 cm laminations) and core size (>15 cm thin beds) samples.
Image charge dynamics in time-dependent quantum transport
Creators: name: Myöhänen, P.
name: Tuovinen, R.
name: Korhonen, T.
name: Stefanucci, G.
name: van Leeuwen, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work we investigate the effects of the electron-electron interaction between a molecular junction and the metallic leads in time-dependent quantum transport. We employ the recently developed embedded Kadanoff-Baym method [Phys. Rev. B 80, 115107 (2009)] and show that the molecule-lead interaction changes substantially the transient and steady-state transport properties. We first show that the mean-field Hartree-Fock (HF) approximation does not capture the polarization effects responsible for the renormalization of the molecular levels neither in nor out of equilibrium. Furthermore, due to the time-local nature of the HF self-energy there exists a region in parameter space for which the system does not relax after the switch-on of a bias voltage. These and other artifacts of the HF approximation disappear when including correlations at the second-Born or GW levels. Both these approximations contain polarization diagrams which correctly account for the screening of the charged molecule. We find that by changing the molecule-lead interaction the ratio between the screening and relaxation time changes, an effect which must be properly taken into account in any realistic time-dependent simulation. Another important finding is that while in equilibrium the molecule-lead interaction is responsible for a reduction of the HOMO-LUMO gap and for a substantial redistribution of the spectral weight between the main spectral peaks and the induced satellite spectrum, in the biased system it can have the opposite effect, i.e., it sharpens the spectral peaks and opens the HOMO-LUMO gap.
description: 18 pages, 26 figures
Bosonic and k-fermionic coherent states for a class of polynomial Weyl-Heisenberg algebras
Creators: name: Daoud, Mohammed
name: Kibler, Maurice R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The aim of this article is to construct à la Perelomov and à la Barut-Girardello coherent states for a polynomial Weyl-Heisenberg algebra. This generalized Weyl-Heisenberg algebra, noted A(x), depends on r real parameters and is an extension of the one-parameter algebra introduced in Daoud M and Kibler MR 2010 J. Phys. A: Math. Theor. 43 115303 which covers the cases of the su(1,1) algebra (for x > 0), the su(2) algebra (for x < 0) and the h(4) ordinary Weyl-Heisenberg algebra (for x = 0). For finite-dimensional representations of A(x) and A(x,s), where A(x,s) is a truncation of order s of A(x) in the sense of Pegg-Barnett, a connection is established with k-fermionic algebras (or quon algebras). This connection makes it possible to use generalized Grassmann variables for constructing certain coherent states. Coherent states of the Perelomov type are derived for infinite-dimensional representations of A(x) and for finite-dimensional representations of A(x) and A(x,s) through a Fock-Bargmann analytical approach based on the use of complex (or bosonic) variables. The same approach is applied for deriving coherent states of the Barut-Girardello type in the case of infinite-dimensional representations of A(x). In contrast, the construction of à la Barut-Girardello coherent states for finite-dimensional representations of A(x) and A(x,s) can be achieved solely at the price to replace complex variables by generalized Grassmann (or k-fermionic) variables. Some of the results are applied to su(2), su(1,1) and the harmonic oscillator (in a truncated or not truncated form).
description: 25 pages
Ball-polyhedra and antipodality
Creators: name: Naszodi, Marton
Publisher: name: University of Calgary
Year: 2007

description: Bibliography: p. 142-148
description: We investigate antipodality and ball-polyhedra. We call a set A in Euclidean d-space antipodal if, through any two points of A, there is a pair of parallel hyperplanes that pass through those points and support A. First, as an application of antipodality, we prove an upper bound on the cardinal­ity of pairwise touching, positive homothetic, copies of a convex body in Euclidean d-space. The problem of finding a tight upper bound was posed by K. Bezdek and J. Pach in 1988. We extend the definition of antipodality to Hyperbolic d-space in three different ways, prove upper bounds for the maximum cardinality of sets that satisfy these definitions and show connections to Euclidean antipodality. Then, we turn our attention to intersections of finitely many balls of the same radius in Euclidean d-space. These objects are called ball-polyhedra. As a starting point, we lay the foundations of the study of ball-polyhedra, and a notion that appears naturally, spindle convexity. Next, we investigate analogues of theorems from the theory of linear convexity and (linear) polyhedral sets. Then, we prove the following isoperimetric result in the Euclidean, Hyperbolic and Spherical Planes: Among all "n-gons" with unit circular arc edges and with a given perimeter, the regular one encloses the largest area. Next, illumination, the face lattice and a symmetry property of three-dimensional ball-polyhedra are discussed. Finally, we study rigidity of ball-polyhedra; that is, the problem of finding parameters that determine a ball-polyhedron uniquely.
title: Europäisierung des österreichischen Bodenschutzes durch die gemeinsame Agrarpolitik
Creators: name: Steiner, Simona
Year: 2023

description: Die Gemeinsame Agrarpolitik ist die europäische Politik zur Förderung und Regulierung der Landwirtschaft. Das Agrarumweltprogramm ÖPUL ist die nationale Ausgestaltung im Rahmen der GAP, um unter anderem die Umwelt- und Naturschutzleistungen der österreichischen Betriebe abzugelten. Die vorliegende Arbeit untersucht den Einfluss der Gemeinsamen Agrarpolitik, im genaueren von ÖPUL auf den österreichischen Bodenschutz in der Landwirtschaft. Die Arbeit analysiert dazu ÖPUL anhand der Theorie „Orders of Change“ und der Umsetzung in Österreich. Es kann gezeigt werden, dass eine Europäisierung als Anpassung der österreichischen an die europäischen Standards stattgefunden hat. Grundlegende Veränderungen konnten jedoch nicht festgestellt werden. Österreich hat EU-Vorgaben fristgerecht und korrekt umgesetzt. Die Arbeit lässt den Schluss zu, dass Bildungsmaßnahmen, ein einheitlicheres System und ein europäisches Bodenschutzgesetz für den zukünftigen Bodenschutz förderlich wären.
Proxemic Interactions in Ubiquitous Computing Ecologies
Creators: name: Marquardt, Nicolai
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Computer Science
subject: Proxemics
subject: Proxemic Interactions
subject: Ubiquitous Computing
subject: Ubicomp
subject: Human-Computer Interaction

description: In this dissertation, I explore how the knowledge of people’s and devices’ spatial relationships – called proxemics – can be applied to the design of ubiquitous computing (ubicomp) interactions. Edward Hall’s proxemics theory describes how people use spatial relationships – such as varying their distance or orientation – to mediate their interactions with other people around them. But in spite of the opportunities presented by people’s natural understanding of proxemics, only a relatively small number of ubicomp installations incorporate proxemic information within interaction design. Therefore, my goal in this dissertation research is to inform the design of future proxemic-aware devices that – similar to people’s natural expectations and use of proxemics – allow increasing connectivity and interaction possibilities when in proximity to people, other devices, or objects. Towards this goal, I explore how the fine-grained knowledge of proxemic relationships between the entities in small-space ubicomp ecologies can be exploited in interaction design. In particular, I provide the following three major contributions: First, I operationalize proxemics for ubicomp interaction with the Proxemic Interactions framework that serves to guide the design of ubicomp applications. The framework describes how designers can consider fine-grained proxemic information to mediate people’s interactions with digital devices, such as large digital surfaces or portable personal devices. I identify five key dimensions of proxemic measures (distance, orientation, movement, identity, and location) to consider when designing proxemic-aware ubicomp systems. I also identify the gradual engagement design pattern as one particular strategy that allows designing system interactions that move from awareness, to reveal, to interaction. Second, I design the Proximity Toolkit allowing ubicomp developers to rapidly prototype proxemic-aware ubicomp systems. The toolkit simplifies the development process by supplying higher-level information about proxemic relationships between the entities in ubicomp ecologies through an event-driven API and visual inspection tools. Third, I explore the design of three case studies of proxemic-aware systems that react continuously to people’s and devices’ proxemic relationships. The case studies explore the application of proxemics in small-space ubicomp ecologies by considering first person-to-device, then device-to-device, and finally person-to-person & device-to-device proxemic relationships. Together, they validate the toolkit’s versatility and the application of the Proxemic Interactions framework.
The Dielectric Constant of Ionic Solutions: A Field-Theory Approach
Creators: name: Levy, Amir
name: Andelman, David
name: Orland, Henri
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We study the variation of the dielectric response of a dielectric liquid (e.g. water) when a salt is added to the solution. Employing field-theoretical methods we expand the Gibbs free-energy to first order in a loop expansion and calculate self-consistently the dielectric constant. We predict analytically the dielectric decrement which depends on the ionic strength in a complex way. Furthermore, a qualitative description of the hydration shell is found and is characterized by a single length scale. Our prediction fits rather well a large range of concentrations for different salts using only one fit parameter related to the size of ions and dipoles.
description: 5 pages, 2 figures
Adventures in non-traditional approaches to classical text : directing William Shakespeare’s Romeo and Juliet
Creators: name: Leger, Catriona
Publisher: name: University of British Columbia
Year: 2010

description: Adventures in non-traditional approaches to classical text: directing William Shakespeare’s Romeo and Juliet examines the preparation, pre-production and rehearsal process behind staging Romeo and Juliet in the round that the Telus Studio Theatre, January 21-30, 2010. As outlined in the following pages, my core objective was to explore and apply principles of Le Jeu, a physical and game-based approach to theatre as taught by Jacques Lecoq and Philippe Gaulier, to a classical piece of text. Elements of the production and rehearsal process were also to include Bouffon, Clown and French Melodrama. In addition, my aim was to experiment with gender-role reversal in the traditionally patriarchal society outlined in the text. In the rehearsal hall my focus was on giving the actor the freedom to dream, play and experiment beyond the confines of traditional approaches to text. In performance this production was framed as a company of grotesques performing the greatest love story of all time in a live cabaret setting. This paper includes biographical information on the playwright, a directorial analysis of the script, a journal chronicling the entire production process from thesis proposal submission through to the run of the show and a short reflection on the process concluding with final thoughts on the production.
PANTR: A proximal algorithm with trust-region updates for nonconvex constrained optimization
Creators: name: Bodard, Alexander
name: Pas, Pieter
name: Patrinos, Panagiotis
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This work presents PANTR, an efficient solver for nonconvex constrained optimization problems, that is well-suited as an inner solver for an augmented Lagrangian method. The proposed scheme combines forward-backward iterations with solutions to trust-region subproblems: the former ensures global convergence, whereas the latter enables fast update directions. We discuss how the algorithm is able to exploit exact Hessian information of the smooth objective term through a linear Newton approximation, while benefiting from the structure of box-constraints or l1-regularization. An open-source C++ implementation of PANTR is made available as part of the NLP solver library ALPAQA. Finally, the effectiveness of the proposed method is demonstrated in nonlinear model predictive control applications.
description: Accepted for publication in IEEE Control Systems Letters