cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fast Reachable Set Approximations via State Decoupling Disturbances
Creators: name: Chen, Mo
name: Herbert, Sylvia
name: Tomlin, Claire J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: With the recent surge of interest in using robotics and automation for civil purposes, providing safety and performance guarantees has become extremely important. In the past, differential games have been successfully used for the analysis of safety-critical systems. In particular, the Hamilton-Jacobi (HJ) formulation of differential games provides a flexible way to compute the reachable set, which can characterize the set of states which lead to either desirable or undesirable configurations, depending on the application. While HJ reachability is applicable to many small practical systems, the curse of dimensionality prevents the direct application of HJ reachability to many larger systems. To address computation complexity issues, various efficient computation methods in the literature have been developed for approximating or exactly computing the solution to HJ partial differential equations, but only when the system dynamics are of specific forms. In this paper, we propose a flexible method to trade off optimality with computation complexity in HJ reachability analysis. To achieve this, we propose to simplify system dynamics by treating state variables as disturbances. We prove that the resulting approximation is conservative in the desired direction, and demonstrate our method using a four-dimensional plane model.
description: in Proceedings of the IEE Conference on Decision and Control, 2016
Replication of E van Dijk, GA van Kleef, W Steinel, I van Beest (2008, JPSP 94(4), Exp. 3)
Creators: name: Voracek, Martin
name: Slowik, Agnieszka
Publisher: name: Open Science Framework
Year: 2022

description: This is an independent replication as part of the Reproducibility Project: Psychology.
Replication of C Farris, TA Treat, RJ Viken, and RM McFall (2008, PS 19(4))
Creators: name: Attwood, Angela
name: , Andy
name: Easey, Kayleigh
name: Penton-Voak, Ian
name: Munafo, Marcus
Publisher: name: Open Science Framework
Year: 2022

description: This is an independent replication as part of the Reproducibility Project: Psychology.
General Knowledge Question Norming
Creators: name: DeSoto, Kurt
name: Simons, Daniel
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: general knowledge
subject: materials
subject: norming
subject: qualtrics
subject: trivia
subject: trivial pursuit

description: A study establishing accuracy rates for a set of four-alternative-forced-choice general knowledge questions on Amazon Mechanical Turk.
Promoción de los valores ambientales escolares, involucrados en los procesos del proyecto ambiental escolar (PRAE) del Colegio Nuevo Chile IED, por medio del diseño e implementación de una cartilla digital de educación ambiental, para los estudiantes del grado tercero de básica primaria.
Creators: name: Guacary Sánchez, Edna Margarita
name: Vargas Moreno, Alba Lucia
Publisher: name: Universidad de Cartagena
Year: 2023
Subjects: subject: Plataforma virtual
subject: Medio ambiental - Educación
subject: Medio ambiente - Innovaciones tecnológicas

description: Este proyecto tiene como objeto vincular la educación ambiental específicamente desde la promoción de los valores ambientales, teniendo como herramienta la aplicación de una cartilla ambiental interactiva partiendo de las problemáticas ambientales identificadas en el entorno de los estudiantes del grado tercero de básica primaria del Colegio Nuevo Chile Institución Educativa Distrital. Para llevar a cabo este estudio se tuvo en cuenta el desarrollo de un enfoque cualitativo y un método de Investigación, Acción Pedagógica donde se incluyeron procesos de observación del entorno registrados en un diario de campo, además de la aplicación de una encuesta diagnóstica que sirvió de base para la detección clara y específica de las problemáticas más relevantes, como son el mal manejo del recurso hídrico, el uso inadecuado de los residuos sólidos y el desconocimiento por cuidar y conservar en entorno, evidenciándose la falta de valores ambientales en los estudiantes en donde se aprecie y respete el entorno así como el fortalecer la capacidad de valorar, cuidar y conservar el ambiente. Los resultados evidencian que los estudiantes al interactuar con la tecnología y la aplicación de diversas herramientas virtuales, les permitió no solo reflexionar frente a las problemáticas ambientales sino conocer y profundizar cada temática abordada y la importancia de implementar acciones concretas que favorezcan el cuidado del medio.
Derivation of anisotropic dissipative fluid dynamics from the Boltzmann equation
Creators: name: Molnar, E.
name: Niemi, H.
name: Rischke, D. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Fluid-dynamical equations of motion can be derived from the Boltzmann equation in terms of an expansion around a single-particle distribution function which is in local thermodynamical equilibrium, i.e., isotropic in momentum space in the rest frame of a fluid element. However, in situations where the single-particle distribution function is highly anisotropic in momentum space, such as the initial stage of heavy-ion collisions at relativistic energies, such an expansion is bound to break down. Nevertheless, one can still derive a fluid-dynamical theory, called anisotropic dissipative fluid dynamics, in terms of an expansion around a single-particle distribution function, $\hat{f}_{0\bf k}$, which incorporates (at least parts of) the momentum anisotropy via a suitable parametrization. We construct such an expansion in terms of polynomials in energy and momentum in the direction of the anisotropy and of irreducible tensors in the two-dimensional momentum subspace orthogonal to both the fluid velocity and the direction of the anisotropy. From the Boltzmann equation we then derive the set of equations of motion for the irreducible moments of the deviation of the single-particle distribution function from $\hat{f}_{0\bf k}$. Truncating this set via the 14-moment approximation, we obtain the equations of motion of anisotropic dissipative fluid dynamics.
description: 52 pages; Abstract slightly changed; new references and new paragraph added
Non-Koszulness of operads and positivity of Poincaré series
Creators: name: Dotsenko, Vladimir
name: Markl, Martin
name: Remm, Elisabeth
Publisher: name: arXiv
Year: 2016
Subjects: subject: K-Theory and Homology (math.KT)
subject: Combinatorics (math.CO)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18D50 (Primary), 18G55, 33F10, 55P48 (Secondary)

description: We prove that the operad of mock partially associative $n$-ary algebras is not Koszul, as conjectured by the second and the third author in 2009, and utilise the Zeilberger's algorithm for hypergeometric summation to demonstrate that non-Koszulness of that operad cannot be established by hunting for negative coefficients in the inverse of its Poincaré series.
description: 13 pages. arXiv admin note: text overlap with arXiv:1706.04893
Human Sustainability
Creators: name: Galvani, Adriana
Publisher: name: Zenodo
Year: 2023
Subjects: Human evolution; Animal evolution, Human behavior; Demography, Technological changes

description: Demographic evolution, like all living phenomena, undergoes a Darwinian process. Species evolve not only physically, but also psychologically, and behaviorally, so there are movements or upheavals in the masses evolution of which the individual is not conscious, but which affect even more the demographic trends than the conscious ones. We could bear in mind that demographic trend cannot be based solely on statistical data of deaths and births. It is a complex phenomenon that adjusts itself, likely as a consequence of previous factors.
description: The first attempt to generate a file on Darwinian behavioral evolution
JCEM Ylescupidez et al Supplemental Material 2023
Creators: name: Ylescupidez, Alyssa
name: Speake, Cate
name: Pietropaolo, Susan L.
name: Wilson, Darrell M.
name: Steck, Andrea K.
name: Sherr, Jennifer L.
name: L. Gaglia, Jason
name: Bender, Christine
name: Lord, Sandra
name: Greenbaum, Carla J.
Publisher: name: figshare
Year: 2023
Subjects: Autoimmunity
Endocrinology

description: This is the supplemental material for the manuscript entitled "OGTT metrics surpass continuous glucose monitoring data for T1D prediction in multiple-autoantibody-positive individuals" (Ylescupidez et al), submitted to the Journal of Clinical Endocrinology and Metabolism in 2023.
 Supplemental materials include 4 supplemental tables and 3 supplemental figures.
Spontaneous Spin Textures in Multiorbital Mott Systems
Creators: name: Kunes, J.
name: Geffroy, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin textures in k-space arising from spin-orbit coupling in non-centrosymmetric crystals find numerous applications in spintronics. We present a mechanism that leads to appearance of k-space spin texture due to spontaneous symmetry breaking driven by electronic correlations. Using dynamical mean-field theory we show that doping a spin-triplet excitonic insulator provides a means of creating new thermodynamic phases with unique properties. The numerical results are interpreted using analytic calculations within a generalized double-exchange framework.
description: the published version with Supplemental Material attached
Replication of LS Colzato, MT Bajo, W van den Wildenberg, D Paolieri, S Nieuwenhuis, W La Heij, B Hommel (2008, JEPLMC 34(2), Exp. 3)
Creators: name: Kappes, Heather
Publisher: name: Open Science Framework
Year: 2022

description: This is an independent replication as part of the Reproducibility Project: Psychology.
Multiplicity results and sign changing solutions of non-local equations with concave-convex nonlinearities
Creators: name: Bhakta, Mousomi
name: Mukherjee, Debangana
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35S15, 35J20, 49J35, 47G20, 45G05

description: In this paper we prove the existence of infinitely many nontrivial solutions of the following equations driven by a nonlocal integro-differential operator $L_K$ with concave-convex nonlinearities and homogeneous Dirichlet boundary conditions \begin{eqnarray*} \mathcal{L}_{K} u + μ\, |u|^{q-1}u + λ\,|u|^{p-1}u &=& 0 \quad\text{in}\quad Ω, \\[2mm] u&=&0 \quad\mbox{in}\quad\mathbb{R}^N\setminusΩ, \end{eqnarray*} where $Ω$ is a smooth bounded domain in $\mathbb{R}^N$, $N>2s$, $s\in(0, 1)$, $06s$, $λ=1$, we find $μ^*>0$ such that for any $μ\in(0,μ^*)$, there exists at least one sign changing solution.
description: 32 pages. Proof of Claim 4 in Theorem 4.1 has been modified in this version
A characterization of Herglotz-Nevanlinna functions in two variables via integral representations
Creators: name: Luger, Annemarie
name: Nedic, Mitja
Publisher: name: arXiv
Year: 2016
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32A26 (Primary), 32A40, 32A10, 32A30, 30J99, 32A70 (Secondary)

description: We derive an integral representation for Herglotz-Nevanlinna functions in two variables which provides a complete characterization of this class in terms of a real number, two non-negative numbers and a positive measure satisfying certain conditions. Further properties of the representing measures are discussed.
description: 15 pages, 2 figures, accepted for publication in Arkiv f\"or Matematik
Knowing the unknowns: uncertainties in simple estimators of galactic dynamical masses
Creators: name: Campbell, David J. R.
name: Frenk, Carlos S.
name: Jenkins, Adrian
name: Eke, Vincent R.
name: Navarro, Julio F.
name: Sawala, Till
name: Schaller, Matthieu
name: Fattahi, Azadeh
name: Oman, Kyle A.
name: Theuns, Tom
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The observed stellar kinematics of dispersion-supported galaxies are often used to measure dynamical masses. Recently, several analytical relationships between the stellar line-of-sight velocity dispersion, the projected (2D) or deprojected (3D) half-light radius, and the total mass enclosed within the half-light radius, relying on the spherical Jeans equation, have been proposed. Here, we make use of the APOSTLE cosmological hydrodynamical simulations of the Local Group to test the validity and accuracy of such mass estimators for both dispersion and rotation-supported galaxies, for field and satellite galaxies, and for galaxies of varying masses, shapes, and velocity dispersion anisotropies. We find that the mass estimators of Walker et al. and Wolf et al. are able to recover the masses of dispersion-dominated systems with little systematic bias, but with a 1-sigma scatter of 25 and 23 percent, respectively. The error on the estimated mass is dominated by the impact of the 3D shape of the stellar mass distribution, which is difficult to constrain observationally. This intrinsic scatter becomes the dominant source of uncertainty in the masses estimated for galaxies like the dwarf spheroidal (dSph) satellites of the Milky Way, where the observational errors in their sizes and velocity dispersions are small. Such scatter may also affect the inner density slopes of dSphs derived from multiple stellar populations, relaxing the significance with which Navarro-Frenk-White profiles may be excluded, depending on the degree to which the relevant properties of the different stellar populations are correlated. Finally, we derive a new optimal mass estimator that removes the residual biases and achieves a statistically significant reduction in the scatter to 20 percent overall for dispersion-dominated galaxies, allowing more precise and accurate mass estimates.
description: Accepted for publication in MNRAS. 26 pages, 21 figures, 3 tables
Original protocol for the study
Creators: name: Jaramillo-Cartwright, María José
name: Mafla, Alejandra
name: Mafla-Viscarra, Nicolás
name: Grunauer, Michelle
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 420311
subject: Health systems

description: This document contains the original protocol of the study: Interdisciplinary practice-based learning as a strategy for just-in-time learning in resource-poor settings during emergency response in the period 2020-2022 in Ecuador.
Efficient thermoelectric materials using nonmagnetic double perovskites with $d^0$/$d^6$ band filling
Creators: name: Arribi, Pablo Villar
name: García-Fernández, Pablo
name: Junquera, Javier
name: Pardo, Victor
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Efficient thermoelectric materials should present large Seebeck coefficient, high electrical conductivity and low thermal conductivity. An enhanced Seebeck coefficient can be obtained from materials where the Fermi level can be aligned with a large and narrow peak of the density of states, particularly when a substantial band valley degeneracy occurs. A high electrical conductivity comes as a consequence of large conductive hopping paths between the atoms of the material. Both physical quantities can be decoupled and optimized independently if their origins can be ascribed to different sets of bands. Based on these assumptions, double perovskites A$_2$BB'O$_6$ with $d^0/d^6$ filling for the B and B' metal cations, respectively, have been considered. They provide a desirable band structure with degenerate B-$t_{2g}$ / B'-$e_g$ bands above the Fermi level together with a low thermal conductivity. We have carried out first-principles simulations for various of these nonmagnetic double perovskites and showed that all of them present a large Seebeck coefficient (consequence of the localized and empty $t_{2g}$ states of the B-cation), and large electrical conductivity due to the more spread unoccupied $e_{g}$ band of the B' cation. We have seen that if they can be optimally doped, they could show a figure of merit comparable or even higher than the best $n$-type thermoelectric oxides, such as SrTiO$_{3}$. Different mechanisms to tune the band structure and enhance the thermoelectric figure of merit are explored, including epitaxial strain, hydrostatic pressure, chemical pressure, and external doping. A fully relaxed structure has also been studied, showing that a realistic calculation is necessary to make accurate predictions, but also proving that the main trends shown throughout the paper remain unchanged.
description: 12 pages, 8 figures
Replication of Tracy and Robins (2008, JPSP, Exp 4)
Creators: name: Sullivan, Gavin
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: cross-cultural
subject: emotion
subject: pride
subject: psychology
subject: replication
subject: reproducibility

description: Part of the Reproducibility Project: Psychology; independent replication of Tracy & Robins 2008 study "The nonverbal expression of pride: Evidence for cross-cultural recognition"
A coalescent dual process for a Wright-Fisher diffusion with recombination and its application to haplotype partitioning
Creators: name: Griffiths, Robert C.
name: Jenkins, Paul A.
name: Lessard, Sabin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Probability (math.PR)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: Duality plays an important role in population genetics. It can relate results from forwards-in-time models of allele frequency evolution with those of backwards-in-time genealogical models; a well known example is the duality between the Wright-Fisher diffusion for genetic drift and its genealogical counterpart, the coalescent. There have been a number of articles extending this relationship to include other evolutionary processes such as mutation and selection, but little has been explored for models also incorporating crossover recombination. Here, we derive from first principles a new genealogical process which is dual to a Wright-Fisher diffusion model of drift, mutation, and recombination. Our approach is based on expressing a putative duality relationship between two models via their infinitesimal generators, and then seeking an appropriate test function to ensure the validity of the duality equation. This approach is quite general, and we use it to find dualities for several important variants, including both a discrete L-locus model of a gene and a continuous model in which mutation and recombination events are scattered along the gene according to continuous distributions. As an application of our results, we derive a series expansion for the transition function of the diffusion. Finally, we study in further detail the case in which mutation is absent. Then the dual process describes the dispersal of ancestral genetic material across the ancestors of a sample. The stationary distribution of this process is of particular interest; we show how duality relates this distribution to haplotype fixation probabilities. We develop an efficient method for computing such probabilities in multilocus models.
description: This version corrects typographical errors in equations (25), (26), (27), (B.3), (B.4). 39 pages, 3 figures
Fermionic T-duality in fermionic double space
Creators: name: Nikolic, Bojan
name: Sazdovic, Branislav
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this article we offer the interpretation of the fermionic T-duality of the type II superstring theory in double space. We generalize the idea of double space doubling the fermionic sector of the superspace. In such doubled space fermionic T-duality is represented as permutation of the fermionic coordinates $θ^α$ and $\barθ^α$ with the corresponding fermionic T-dual ones, $\vartheta_α$ and $\bar\vartheta_α$, respectively. Demanding that T-dual transformation law has the same form as inital one, we obtain the known form of the fermionic T-dual NS-R i R-R background fields. Fermionic T-dual NS-NS background fields are obtained under some assumptions. We conclude that only symmetric part of R-R field strength and symmetric part of its fermionic T-dual contribute to the fermionic T-duality transformation of dilaton field and analyze the dilaton field in fermionic double space. As a model we use the ghost free action of type II superstring in pure spinor formulation in approximation of constant background fields up to the quadratic terms.
description: Four paragraphs in the Introduction added in order to better motivate the subject, explained the choice of action (detailed derivation)
Quantum Mechanical Corrections to the Schwarzschild Black Hole Metric
Creators: name: Bargueño, P.
name: Medina, S. Bravo
name: Nowakowski, M.
name: Batic, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by quantum mechanical corrections to the Newtonian potential, which can be translated into an $\hbar$-correction to the $g_{00}$ component of the Schwarzschild metric, we construct a quantum mechanically corrected metric assuming $-g_{00}=g^{rr}$. We show how the Bekenstein black hole entropy $S$ receives its logarithmic contribution provided the quantum mechanical corrections to the metric are negative. In this case the standard horizon at the Schwarzschild radius $r_S$ increases by small terms proportional to $\hbar$ and a remnant of the order of Planck mass emerges. We contrast these results with a positive correction to the metric which, apart from a corrected Schwarzschild horizon, leads to a new purely quantum mechanical horizon.
description: 14 pages Latex, enlarged version as compared to the published one
Fourier quasicrystals and discreteness of the diffraction spectrum
Creators: name: Lev, Nir
name: Olevskii, Alexander
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We prove that a positive-definite measure in $\mathbb{R}^n$ with uniformly discrete support and discrete closed spectrum, is representable as a finite linear combination of Dirac combs, translated and modulated. This extends our recent results where we proved this under the assumption that also the spectrum is uniformly discrete. As an application we obtain that Hof's quasicrystals with uniformly discrete diffraction spectra must have a periodic diffraction structure.
Search for new phenomena in final states with large jet multiplicities and missing transverse momentum with ATLAS using $\sqrt{s} =13$ TeV proton--proton collisions
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Results are reported of a search for new phenomena, such as supersymmetric particle production, that could be observed in high-energy proton--proton collisions. Events with large numbers of jets, together with missing transverse momentum from unobserved particles, are selected. The data analysed were recorded by the ATLAS experiment during 2015 using the 13 TeV centre-of-mass proton--proton collisions at the Large Hadron Collider, and correspond to an integrated luminosity of 3.2 fb$^{-1}$. The search selected events with various jet multiplicities from $\ge 7$ to $\ge 10$ jets, and with various $b$-jet multiplicity requirements to enhance sensitivity. No excess above Standard Model expectations is observed. The results are interpreted within two supersymmetry models, where gluino masses up to 1400 GeV are excluded at 95% confidence level, significantly extending previous limits.
description: 20 pages plus author list (37 pages total), 12 figures, 4 tables, submitted to Physics Letters B. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2015-07
La introducción de la energía eléctrica en México
Creators: name: Martínez Miranda, Elio Agustín
Publisher: name: Zenodo
Year: 2004

description: Este trabajo surgió con la idea de estudiar los inicios de la industria eléctrica en México, y en particular, analizar el papel que jugó la física en este proceso. Como los ingenieros eran los profesionistas, que en ese momento, contaban con la mejor formación de física en el país, nos interesó centrar esta investigación en el papel que tuvieron los ingenieros mexicanos en la puesta en marcha del proyecto hidroeléctrico más ambicioso e importante del país, el de la hidroeléctrica de Necaxa, que se convirtió en la principal fuente de energía eléctrica de la Ciudad de México y otras ciudades aledañas. Ésta se construyó a principios del siglo XX y, sin lugar a dudas, requirió de los más avanzados conocimientos de electricidad, mecánica, hidráulica, etc.
title: Το κάστρο Μπελβεντέρε
title: Belvedere Castle
titleType: AlternativeTitle
Creators: name: Παπαγεωργίου, Στυλιανός
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Κάστρο μπελβεντέρε
Βιέννη
Κίνημα μπαρόκ
Άνω μπελβεντέρε
Τεχνικές-δυσκολίες
Μπαρόκ αρχιτεκτονική

description: Η πτυχιακή εργασία αναφέρεται στο κάστρο Μπελβεντέρε, το οποίο εδράζεται στην Αυστρία και συγκεκριμένα στη Βιέννη. Πρόκειται λοιπόν για ένα ανάκτορο το οποίο χτίστηκε στα πρότυπα της Μπαρόκ αρχιτεκτονικής για την οποία γίνεται εκτενέστερη αναφορά στην εργασία. Στη συνέχεια γίνεται παρουσίαση του κάστρου Μπελβεντέρε κατά την οποία πληροφορείστε τόσο για την εσωτερική και εξωτερική όψη του κτιρίου, όσο και για την ιστορική του υπόσταση μέσα στο χρόνο. Επιπρόσθετα γίνεται αναφορά σε έναν συγκεκριμένο φωτογράφο ο οποίος ασχολήθηκε στο παρελθόν με τη φωτογράφιση μπαρόκ αρχιτεκτονικής. Εν κατακλείδι γίνεται λόγος για τις τεχνικές που εφάρμοσα και τις δυσκολίες που συνάντησα κατά τη φωτογράφιση του ανακτόρου, καθώς επίσης και για την επεξεργασία των εικόνων που θα έχετε τη δυνατότητα να παρατηρήσετε στη συγκεκριμένη πτυχιακή.
Continuous Demixing Transition of Binary Liquids: Finite-Size Scaling from the Analysis of Sub-Systems
Creators: name: Pathania, Yogyata
name: Chakraborty, Dipanjan
name: Höfling, Felix
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: binary fluids
subject: critical phenomena
subject: finite-size scaling
subject: molecular dynamics simulations
subject: phase diagrams
subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik

description: A binary liquid near its consolute point exhibits critical fluctuations of local composition and a diverging correlation length. The method of choice to calculate critical points in the phase diagram is a finite-size scaling analysis, based on a sequence of simulations with widely different system sizes. Modern, massively parallel hardware facilitates that instead cubic sub-systems of one large simulation are used. Here, this alternative is applied to a symmetric binary liquid at critical composition and different routes to the critical temperature are compared: 1) fitting critical divergences of the composition structure factor, 2) scaling of fluctuations in sub-volumes, and 3) applying the cumulant intersection criterion to sub-systems. For the last route, two difficulties arise: sub-volumes are open systems, for which no precise estimate of the critical Binder cumulant Uc is available. Second, the boundaries of the simulation box interfere with the sub-volumes, which is resolved here by a two-parameter finite-size scaling. The implied modification to the data analysis restores the common intersection point, yielding Uc=0.201 +/- 0.001, universal for cubic Ising-like systems with free boundaries. Confluent corrections to scaling, which arise for small sub-system sizes, are quantified and the data are compatible with the universal correction exponent omega approximate to 0.83.
Microbial conversions of terpenoids
Creators: name: Parshikov, Igor
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: MICROBIAL CONVERSIONS
subject: TERPENOIDS

description: The monograph describes examples of the application of microbial technology for obtaining of derivatives of terpenoids. Obtaining new derivatives of terpenoids, including artemisinin derivatives with increased antimalarial activity, is an important goal of research in microbial biotechnology and medicinal chemistry
Automatic Image Annotation via Label Transfer in the Semantic Space
Creators: name: Uricchio, Tiberio
name: Ballan, Lamberto
name: Seidenari, Lorenzo
name: Del Bimbo, Alberto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Retrieval (cs.IR)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Automatic image annotation is among the fundamental problems in computer vision and pattern recognition, and it is becoming increasingly important in order to develop algorithms that are able to search and browse large-scale image collections. In this paper, we propose a label propagation framework based on Kernel Canonical Correlation Analysis (KCCA), which builds a latent semantic space where correlation of visual and textual features are well preserved into a semantic embedding. The proposed approach is robust and can work either when the training set is well annotated by experts, as well as when it is noisy such as in the case of user-generated tags in social media. We report extensive results on four popular datasets. Our results show that our KCCA-based framework can be applied to several state-of-the-art label transfer methods to obtain significant improvements. Our approach works even with the noisy tags of social users, provided that appropriate denoising is performed. Experiments on a large scale setting show that our method can provide some benefits even when the semantic space is estimated on a subset of training images.
description: To appear in Pattern Recognition
Rate of environmental change across scales in ecology
Creators: name: Pinek, Liliana
name: Mansour, India
name: Lakovic, Milica
name: Ryo, Masahiro
name: Rillig, Matthias C.
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: global change
subject: physiology
subject: ecology
subject: rate of change
subject: time
subject: abrupt
subject: gradual
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: The rate of change (RoC) of environmental drivers matters: biotic and abiotic components respond differently when faced with a fast or slow change in their environment. This phenomenon occurs across spatial scales and thus levels of ecological organization. We investigated the RoC of environmental drivers in the ecological literature and examined publication trends across ecological levels, including prevalent types of evidence and drivers. Research interest in environmental driver RoC has increased over time (particularly in the last decade), however, the amount of research and type of studies were not equally distributed across levels of organization and different subfields of ecology use temporal terminology (e.g. 'abrupt' and 'gradual') differently, making it difficult to compare studies. At the level of individual organisms, evidence indicates that responses and underlying mechanisms are different when environmental driver treatments are applied at different rates, thus we propose including a time dimension into reaction norms. There is much less experimental evidence at higher levels of ecological organization (i.e. population, community, ecosystem), although theoretical work at the population level indicates the importance of RoC for evolutionary responses. We identified very few studies at the community and ecosystem levels, although existing evidence indicates that driver RoC is important at these scales and potentially could be particularly important for some processes, such as community stability and cascade effects. We recommend shifting from a categorical (e.g. abruptversusgradual) to a quantitative and continuous (e.g. degrees C/h) RoC framework and explicit reporting of RoC parameters, including magnitude, duration and start and end points to ease cross-scale synthesis and alleviate ambiguity. Understanding how driver RoC affects individuals, populations, communities and ecosystems, and furthermore how these effects can feed back between levels is critical to making improved predictions about ecological responses to global change drivers. The application of a unified quantitative RoC framework for ecological studies investigating environmental driver RoC will both allow cross-scale synthesis to be accomplished more easily and has the potential for the generation of novel hypotheses.
Enhancement of crossed Andreev reflection in a superconducting ladder connected to normal metal leads
Creators: name: Soori, Abhiram
name: Mukerjee, Subroto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Crossed Andreev reflection (cAR) is a scattering process that happens in a quantum transport set-up consisting of two normal metals (NM) attached to a superconductor (SC), where an electron incident from one NM results in a hole emerging in the other. Typically, an electron tunnelling through the superconductor from one NM to the other (ET) competes with cAR and masks the signature of cAR in the conductance spectrum. We propose a novel scheme to enhance cAR, in which SC part of the NM-SC-NM is side-coupled to another SC having a different SC phase to form a Josephson junction in the transverse direction. At strong enough coupling and adequate phase difference, one can smoothly traverse between highly ET-dominant to highly cAR-dominant transport regimes by tuning chemical potential, due to the appearance of subgap Andreev states that are extended in the longitudinal direction. We also discuss connections to realistic systems.
description: 7 pages, 5 figures. Published version. Typos corrected
Linear axis rail system
Creators: name: Braun, Derek
name: Jones, Jacob
Publisher: name: Unknown
Year: 2019

description: The purpose of this project was to design fabricate, and implement a modular linear-axis rail
system for use with the Kawasaki RS03N multi-axial robots located at the USI's Applied
Engineering Center. Upon implementation of the rail system, users can issue positioning
commands to the motor-driven platform, which will move the platform to one of four predetermined
locations. To design the rail system, mechanical analysis was performed to determine
the specifications for the rails, slides, and motors. Upon completion, this project has allowed for
the expansion of the curriculum for TECH 272 by giving instructors the tools to discuss the
importance and use of motion control systems in manufacturing environments, and how to
design them. In addition to this, the project is also the first step in a larger project being
undertaken by Mr. Nelson to retrofit the Kawasaki RS03N robots for use as robotic CNC mills,
further expanding their functionality and usefulness, both inside and outside of the classroom.
Scattering in supersymmetric M(atrix) models
Creators: name: Helling, Robert
Publisher: name: Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I
Year: 2000
Subjects: subject: Supersymmetrie
subject: Stringtheorie
subject: M(atrix)-Theorie
subject: M-Theorie
subject: D-Branen
subject: Supergravitation
subject: Streutheorie
subject: Supersymmetry
subject: Stringtheory
subject: M(atrix)-Theory
subject: M-Theory
subject: D-Branes
subject: Supergravity
subject: Scattering-theory
subject: 530 Physik
subject: 29 Physik, Astronomie
subject: UO 1560
subject: UO 2000
subject: UO 4065

description: In dieser Arbeit stellen wir verschiedene Tests der (M)atrixtheorie-Vermutung vor. Die (M)atrixtheorievermutung besagt, dass die Dynamik von M-Theorie, der Urtheorie, die alle bekannten Stringtheorien und auch elfdimensionale Supergravitation als bestimmte Grenzfaelle enthalten soll, durch ein quantenmechanisches Matrixmodell gegeben ist. Insbesondere untersuchen wir Streuprozesse sowohl aus Sicht des Matrixmodells, als auch aus Sicht der Supergravitation, und vergleichen die resultierenden S-Matrixelemente. Wir finden beeindruckende Uebereinstimmung zwischen den beiden Theorien, solange wir uns auf klassische Supergravitation beschraenken. Sobald wir auch Quanteneffekte auf der Supergravitationsseite einbeziehen, hat diese Uebereinstimmung keinen Bestand. Des weiteren untersuchen wir die Frage, ob Loesungen der klassischen Matrixmodell-Bewegungsgleichungen mit Impulsuebertrag existieren, und finden eine negative Antwort.
description: In this thesis, we present several tests of the M(atrix)-Model conjecture that asserts that the dynamics of M-Theory, the eleven-dimensional Ur-theory containing all known string theories and also eleven-dimensional supergravity in specific limits, is given by a quantum mechanical matrix model. In particular, scattering processes are analyzed both from the M(atrix)-Model and from the supergravity perspective and the corresponding S-matrix elements are compared. We find impressive agreement between these two theories as long as only classical supergravity is considered. If one includes also quantum effects on the supergravity side, the agreement does not persist. In addition to these calculations, the question of the existence of classical solutions to the M(atrix)-Model equations of motion with momentum transfer is addressed and answered negatively.
Patientenorientierung als Qualitätsmerkmal
Creators: name: Bleses, Helma
Publisher: name: Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité
Year: 2005
Subjects: subject: Qualität
subject: Patientenorientierung
subject: Kundenorientierung
subject: Indikatoren
subject: Patient orientation
subject: Customer orientation
subject: Indicators
subject: Quality
subject: 610 Medizin
subject: 33 Medizin
subject: MS 6100
subject: XC 5004

description: Die Studie befasst sich mit der Klärung des Konzeptes der Patientenorientierung im Krankenhaus. Bei der Ausrichtung der betrieblichen Leistungen auf die Bedürfnisse der Kunden - oder genauer - Patienten sind für den Dienstleitungsbereich `Krankenhaus´ besondere Anforderungen zu beachten.Die Komplexität von Systemen der Leistungserbringung und die unterschiedlichen Interessen der an der Leistungserbringung beteiligten Anspruchsgruppen erfordert es, sowohl eine theoretische Konkretisierung vorzunehmen, als auch ein praktikables Instrument für die Erhebung und Beschreibung von Patientenorientierung in Krankenhäusern zu entwickeln. Die Studie weist messbare Indikatoren der Patientenorientierung aus und entwickelt hieraus ein Befragungsinstrument, dessen Güte durch Erhebungen in zwei Vergleichskrankenhäusern bestätigt werden konnte. Die Ergebnisse zeigen, dass Patientenorientierung von Patienten als Organisations- und Prozessqualität wahrgenommen und eingeschätzt wird.Patientenorientierung ist eine konkrete Forderung im Qualitätsmanagement und der Erfüllungsgrad dient als Qualitätsmerkmal in der Leistungserbringung.
description: The study sets a focus on the concept of patient orientation in hospitals and its economic and organizational impacts. The process of shifting the whole organization ‘hospital’ towards customers - or more precisely - patients` needs generates specific demands on management, quality of services and its structures.The complexity of the organization, the variety and divergence of interests involved call both for a theoretical clarification of the concept and the development of an instrument to describe and measure the degree of patient orientation in hospitals. The study revealed indicators for patient orientation and were used to develop a new questionnaire. The quality of that instrument was tested and confirmed in two German hospitals. The results showed that patients can recognize and estimate patient orientation as part of the hospitals management(organization) and process quality. Patient orientation has to be an important aspect of quality management and can be used as an indicator of organizational performance.
Testing Gravity with Gravitational Wave Source Counts
Creators: name: Calabrese, Erminia
name: Battaglia, Nicholas
name: Spergel, David N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the gravitational wave source counts distribution can test how gravitational radiation propagates on cosmological scales. This test does not require obtaining redshifts for the sources. If the signal-to-noise ratio (SNR, $ρ$) from a gravitational wave source is proportional to the strain then it falls as $R^{-1}$, thus we expect the source counts to follow $dN/dρ\propto ρ^{-4}$. However, if gravitational waves decay as they propagate or propagate into other dimensions, then there can be deviations from this generic prediction. We consider the possibility that the strain falls as $R^{-γ}$, where $γ=1$ recovers the expected predictions in a Euclidean uniformly-filled universe, and forecast the sensitivity of future observations to deviations from standard General Relativity. We first consider the case of few objects, 7 sources, with a signal-to-noise from 8 to 24, and impose a lower limit on $γ$, finding $γ>0.33$ at $95\%$ confidence level. The distribution of our simulated sample is very consistent with the distribution of the trigger events reported by Advanced LIGO. Future measurements will improve these constraints: with 100 events, we estimate that $γ$ can be measured with an uncertainty of $15\%$. We generalize the formalism to account for a range of chirp masses and the possibility that the signal falls as $\exp(-R/R_0)/R^γ$.
description: minor updates to match the version accepted by Classical and Quantum Gravity
title: Φυσικοθεραπευτική υποστήριξη του μεγαλύτερου σε ηλικία εργατικού δυναμικού με αρχόμενη άνοια. Συστηματική ανασκόπηση
title: Physiotherapy support for the elderly with dementia. Α Systematic review
titleType: AlternativeTitle
Creators: name: Καζαντζής, Απόστολος
name: Μπούγας, Βασίλειος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Φυσικοθεραπεία
Φυσική άσκηση
Παρέμβαση
Άνοια
Πρώιμη άνοια
Γνωστική εξασθένηση
Εργαζόμενοι
Εργασιακό άγχος

description: Εισαγωγή: Η άνοια είναι ένα νοητικό σύνδρομο που οδηγεί σε γνωστική εξασθένηση πέραν της φυσιολογικής γήρανσης. Επηρεάζει τη γνωστική λειτουργία και αποτελεί μία από τις κυριότερες αιτίες θανάτου και αναπηρίας των ηλικιωμένων ανθρώπων παγκοσμίως. Ο μέσος όρος ηλικίας συνταξιοδότησης έχει αυξηθεί τα τελευταία χρόνια με αποτέλεσμα περισσότερα ηλικιωμένα άτομα να συμμετέχουν στο εργατικό δυναμικό. Σκοπός: Η διερεύνηση της φυσικοθεραπευτικής υποστήριξης στο εργατικό δυναμικό που εμφανίζει συμπτώματα αρχόμενης άνοιας και φθίνουσας γνωστικής λειτουργίας. Μέθοδος: Οι βάσεις δεδομένων που χρησιμοποιήθηκαν για την αναζήτηση των τυχαιοποιημένων κλινικών μελετών ήταν οι Pubmed, Scopus και Google Scholar. Η κλίμακα PEDro χρησιμοποιήθηκε για την αξιολόγηση της μεθοδολογικής ποιότητας και εγκυρότητας των μελετών αυτών. Αποτελέσματα: Στην παρούσα συστηματική ανασκόπηση συμπεριλήφθηκαν 8 έρευνες. Από τις 8 έρευνες, 3 μελετούν την φυσική άσκηση, 1 τα προγράμματα καταπολέμησης του στρες και 4 τις συμπληρωματικές θεραπείες (Yoga και Tai – Chi). Σύμφωνα με την κλίμακα PEDro, 7 από τις 8 έρευνες κρίθηκαν με βαθμολογία «καλή» και 1 από τις 8 είχε «ικανοποιητική» βαθμολογία. Τα αποτελέσματα έδειξαν θετική επίδραση στις σωματικές, ψυχολογικές και νοητικές παραμέτρους που εξετάστηκαν. Συμπεράσματα: Τα θεραπευτικά προγράμματα σε ασθενείς με συμπτώματα αρχόμενης άνοιας είναι ασφαλή και μπορεί να συμβάλουν στην βελτίωση της γενικής ψυχολογικής υγείας, ευεξίας και ποιότητας ζωής με ταυτόχρονη μείωση του άγχους και αύξηση της εργασιακής αποδοτικότητας. Με βάση την υπάρχουσα βιβλιογραφία και τους περιορισμούς των εντασσόμενων μελετών, προτείνεται η διεξαγωγή περισσότερων ερευνών οι οποίες θα εστιάζουν κυρίως στο εργατικό δυναμικό με αρχόμενη άνοια. Λέξεις - Κλειδιά: Φυσικοθεραπεία, «φυσική άσκηση», παρέμβαση, άνοια, «πρώιμη άνοια», «γνωστική εξασθένηση», εργαζόμενοι, «εργασιακό άγχος»
Entanglement Entropy Evolution under Double-trace Deformation
Creators: name: Song, Yushu
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we study the bulk entanglement entropy evolution in conical BTZ black bole background using the heat kernel method. This is motivated by exploring the new examples where quantum corrections of entanglement entropy give the leading contribution. We find that in the large black hole limit the bulk entanglement entropy decreases under the double-trace deformation which is consistent with the holographic $c$ theorem and in the small black hole limit the bulk entanglement entropy increases under the double-trace deformation.
description: 10 pages, no figure, discussion is improved
Bioconversion of 2‑Ethylpyridine by Beauveria bassiana
Creators: name: Parshikov, Igor
name: Khasaeva, Fatima
Publisher: name: Open Science Framework
Year: 2022

description: Investigated the bioconversion of 2-ethylpyridine by the fungus Beauveria bassiana ATCC 7159. In the result of researches was obtained the hydroxylated derivative of the initial substrate. The yield of the product was observed as 60 %.
Υλοποίηση πλατφόρμας επικύρωσης ESPD : επικύρωση ESPD Peppol BIS
Creators: name: Ράπτης, Κωνσταντίνος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: ESPD validator
subject: PEPPOL BIS
subject: BIS
subject: ESPD PEPPOL BIS
subject: Validator
subject: Public procurement
subject: Agile
subject: ESPD Validator Platform
subject: Conformance testing
subject: GUI testing
subject: Transactional testing
subject: Testing plan

description: Στην παρούσα διπλωματική εργασία υλοποιείται μία πλατφόρμα ελέγχου ορθότητας αρχείων ESPD (ESPD validator platform), η οποία υλοποιεί ένα πλάνο ελέγχου (testing plan) αρχείων ESPD που αναπτύχθηκε στα πλαίσια του έργου INTERPROC. Η εργασία χωρίζεται σε έξι κεφάλαια, με κάθε ένα από αυτά να καλύπτει και να αναπτύσσει διαφορετικές πτυχές της μελέτης περίπτωσης. Αρχικά, στο πρώτο κεφαλαίο γίνεται μία εισαγωγή όπου ορίζεται το πρόβλημα και περιγράφεται η δομή και η συνεισφορά της διπλωματικής εργασίας. Το δεύτερο κεφάλαιο αποτελεί τη βιβλιογραφική επισκόπηση, όπου αναλύονται έννοιες όπως η διαλειτουργικότητα, περιγράφεται το ESPD, το PEPPOL, το INTERPROC και γίνεται ανασκόπηση των υπαρχόντων διαθέσιμων ESPD validator platforms. Το τρίτο κεφάλαιο αφορά στη μεθοδολογία, όπου περιγράφεται το testing plan, τα βήματα σχεδιασμού του ESPD validator platform καθώς και το μοντέλο ανάπτυξης που ακολουθήθηκε. Στο τέταρτο κεφάλαιο γίνεται μία εκτενής αναφορά σχετικά με την υλοποίηση και την εγκατάσταση της εφαρμογής, όπου αναφέρονται οι τεχνολογίες και τα εργαλεία που χρησιμοποιήθηκαν. Στο πέμπτο κεφάλαιο γίνεται η παρουσίαση του συστήματος μέσα από την εκτέλεση διαφορετικών σεναρίων δοκιμών για κάθε μία από τις δυνατότητες της πλατφόρμας. Τέλος, γίνεται αξιολόγηση της εφαρμογής μέσα από την εξαγωγή συμπερασμάτων, τα οποία γίνονται η βάση για προτεινόμενες μελλοντικές κατευθύνσεις.