cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unit cell orientation of tetragonal-like BiFeO$_3$ thin films grown on highly miscut LaAlO$_3$ substrates
Creators: name: Beekman, C.
name: Siemons, W.
name: Ward, T. Z.
name: Budai, J. D.
name: Tischler, J. Z.
name: Xu, R.
name: Liu, W.
name: Balke, N.
name: Nam, J. H.
name: Christen, H. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Synchrotron and lab-scale x-ray diffraction shows that tetragonal-like T'-BiFeO3 films on miscut LaAlO3 substrates (miscut < 5 deg) exhibit (00l)-planes tilted away from those of the substrate as predicted by the "Nagai model" (except for miscut <0.2 deg). Tilts as large as 1 deg are achieved even in 100 nm thick films, strikingly larger than those observed in other perovskites. We attribute this to the large c/a ratio and the high crystalline coherency of the T'-BiFeO3/LaAlO3 interface. This coherency is possible through an observed "diagonal-on-diagonal" alignment. Interestingly, the substrate miscut does not influence the relative population of monoclinic domains.
description: 10 pages, 6 figures
Симпатия и ностальгия в тени старшего брата: постсоветская Грузия в польских репортажах и в общественном дискурсе
Creators: name: Bednarczuk, Monika
Publisher: name: Zenodo
Year: 2018
Subjects: Poland, Georgia, 19th-21st centuries, exiles, travelogues, war reports, orientalism, Kapuściński, Jagielski, Meller, Śmieja, Górecki

description: In: Миpия Лeккe / Eлeнa Чxaидзe (Ed.): Poсcия и Гpyзия пocлe импepии. Москва: Новое литературное обозрение 2018, pp. 242–271. Sympathy and Nostalgia in the Shadow of Big Brother: post-Soviet Georgia in Polish travel writing and public discourse Poland and Georgia have remained «in the shadow of Russia» for over 200 years. This paper discusses the different images of Georgia in 20th century Poland. However, a number of earlier relevant texts dealing with the region are also taken into consideration. Based upon travelogues and war reports, this article highlights important aspects of public awareness of Georgia’s history and culture, and locates them within the older Polish tradition of «imaginative geographies».
title: „Weltrecht^2 Entourage Documents (2022)“ - A Standard for a Universal (Technology) Law Lecture in Cyberspace and (Technology) Law (2018)
Creators: name: Schmid, Viola
Publisher: name: UNSPECIFIED
Year: 2022

description: The present “Entourage Document” is meant to complement the paper “Weltrecht^2 - Multidisciplinary constitutional law scholarship from Germany and the EU” and forms part of the cluster Weltrecht^2. In this Cylaw Report XXXXI are published for the first time and in this format: - the draft of a Teaching Standard (ST): „A Universal STANDARD for a (Technology) Law Lecture“, which seeks to pave the way to a new scientific discipline – CYBERSCIENCE (CySci). This “STANDARD” was first presented at the Internet Work in Progress conferences in 2017 and 2018. In this way, the cyber(law) scientific research system opens up on the level of teaching and learning; - the GLOBALMATRIX; - the Visual Legal Design of Weltrecht^2 (GALAXY metaphor) and - the Weltrecht^2 TAXONOMY as „Entourage Document“ in preparation of the paper to be submitted for the World Congress of Constitutional Law. - In addition, several articles published in the course of the past two decades will, for the first time, be presented in form of a „STEP LADDER“ chronology to exhibit the developing work on CYBERSCIENCE (and in Cyberlaw and AILAW) by an author with the veniae legendi (authority) to teach Public, European and Energy law („Herstory“).
Comment on "Epidemiological modeling of online social network dynamics"
Creators: name: Fujii, Kazuyuki
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: In this comment we give a simple analytic approximate solution to the infectious recovery SIR (irSIR) model given by J. Cannarella and J. A. Spechler arXiv:1401.4208, which is a variant of the traditional SIR model.
description: Latex ; 6 pages ; no figure ; minor changes
Förster-induced energy transfer in functionalized graphene
Creators: name: Malic, Ermin
name: Appel, Heiko
name: Hofmann, Oliver T.
name: Rubio, Angel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Carbon nanostructures are ideal substrates for functionalization with molecules, since they consist of a single atomic layer giving rise to an extraordinary sensitivity to changes in their surrounding. The functionalization opens a new research field of hybrid nanostructures with tailored properties. Here, we present a microscopic view on the substrate-molecule interaction in the exemplary hybrid material consisting of graphene functionalized with perylene molecules. First experiments on similar systems have been recently realized illustrating an extremely efficient transfer of excitation energy from adsorbed molecules to the carbon substrate - a process with a large application potential for high-efficiency photovoltaic devices and biomedical imaging and sensing. So far, there has been no microscopically founded explanation for the observed energy transfer. Based on first-principle calculations, we have explicitly investigated the different transfer mechanisms revealing the crucial importance of Förster coupling. Due to the efficient Coulomb interaction in graphene, we obtain strong Förster rates in the range of 1/fs. We investigate its dependence on the substrate-molecule distance R and describe the impact of the momentum transfer q for an efficient energy transfer. Furthermore, we find that the Dexter transfer mechanism is negligibly small due to the vanishing overlap between the involved strongly localized orbital functions. The gained insights are applicable to a variety of carbon-based hybrid nanostructures.
Quantum Local Symmetry of the D-Dimensional Non-Linear Sigma Model: A Functional Approach
Creators: name: Quadri, Andrea
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We summarize recent progress on the symmetric subtraction of the Non-Linear Sigma Model in $D$ dimensions, based on the validity of a certain Local Functional Equation (LFE) encoding the invariance of the SU(2) Haar measure under local left transformations. The deformation of the classical non-linearly realized symmetry at the quantum level is analyzed by cohomological tools. It is shown that all the divergences of the one-particle irreducible (1-PI) amplitudes (both on-shell and off-shell) can be classified according to the solutions of the LFE. Applications to the non-linearly realized Yang-Mills theory and to the electroweak theory, which is directly relevant to the model-independent analysis of LHC data, are briefly addressed.
description: 26 pages. Invited review to Symmetry
Additional file 1 of COM-1 and Hongcheon: New monazite reference materials for the microspot analysis of oxygen isotopic composition
Creators: name: Kim, Jeongmin
name: Park, Changkun
name: Yi, Keewook
name: Lee, Shinae
name: Kim, Sook Ju
name: Jung, Min-Ji
name: Cheong, Albert Chang-sik
Publisher: name: figshare
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geochemistry

description: Additional file 1. Table S1: Oxygen isotopic compositions of the COM-1 monazite, obtained with variable oxygen yield.
Teachers' Perceptions Regarding Retirement In Gauteng Schools
Creators: name: Ramabele Emily Magoma-Nthite, Nonhlanhla Desiree Maseko,  Mabatho Sedibe
Publisher: name: Zenodo
Year: 2023
Subjects: Teachers, Pre-Retirement, Preparedness, Gauteng Schools

description: In this study the focus is on the exploration and description of the teachers' perceptions regarding retirement in Gauteng schools. From the individual and group interviews, the findings are leading to suggestions that a more comprehensive programme for preparing teachers for retirement is highly necessary. All the participants were aware of their retirement age of 60 years as stipulated in the department of education internal memorandum No: 05 of 2021, which states that the compulsory retirement age in the public service is 60 years. It further states that the age restriction is in accordance with Chapter 4 of the Public Service Act, 1994 and Chapter 4 of the Employment of Educators Act, 1998, as amended. 
 it came out that there are some anxieties and fears as the majority seemed not ready and maybe not prepared enough for the retirement. Recommendations for a pre-retirement programme aimed at timeous preparation which may include, psychological, financial and ability to keep functioning post retirement will be proposed to the department of education in Gauteng and for the Tshwane North district as the pilot site on approval.
Additional file 2 of COM-1 and Hongcheon: New monazite reference materials for the microspot analysis of oxygen isotopic composition
Creators: name: Kim, Jeongmin
name: Park, Changkun
name: Yi, Keewook
name: Lee, Shinae
name: Kim, Sook Ju
name: Jung, Min-Ji
name: Cheong, Albert Chang-sik
Publisher: name: figshare
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geochemistry

description: Additional file 2. Table S2: Analytical conditions for secondary ion mass spectrometry measurement of oxygen isotopes in monazite.
Terrestrial Planet Formation in a protoplanetary disk with a local mass depletion: A successful scenario for the formation of Mars
Creators: name: Izidoro, A.
name: Haghighipour, N.
name: Winter, O. C.
name: Tsuchida, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Models of terrestrial planet formation for our solar system have been successful in producing planets with masses and orbits similar to those of Venus and Earth. However, these models have generally failed to produce Mars-sized objects around 1.5 AU. The body that is usually formed around Mars' semimajor axis is, in general, much more massive than Mars. Only when Jupiter and Saturn are assumed to have initially very eccentric orbits (e $\sim$ 0.1), which seems fairly unlikely for the solar system, or alternately, if the protoplanetary disk is truncated at 1.0 AU, simulations have been able to produce Mars-like bodies in the correct location. In this paper, we examine an alternative scenario for the formation of Mars in which a local depletion in the density of the protosolar nebula results in a non-uniform formation of planetary embryos and ultimately the formation of Mars-sized planets around 1.5 AU. We have carried out extensive numerical simulations of the formation of terrestrial planets in such a disk for different scales of the local density depletion, and for different orbital configurations of the giant planets. Our simulations point to the possibility of the formation of Mars-sized bodies around 1.5 AU, specifically when the scale of the disk local mass-depletion is moderately high (50-75%) and Jupiter and Saturn are initially in their current orbits. In these systems, Mars-analogs are formed from the protoplanetary materials that originate in the regions of disk interior or exterior to the local mass-depletion. Results also indicate that Earth-sized planets can form around 1 AU with a substantial amount of water accreted via primitive water-rich planetesimals and planetary embryos. We present the results of our study and discuss their implications for the formation of terrestrial planets in our solar system.
description: Accepted for publication in The Astrophysical Journal
Extended axion electrodynamics: Anomalous dynamo-optical response induced by gravitational pp-waves
Creators: name: Balakin, Alexander B.
name: Alpin, Timur Yu.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend the Einstein-Maxwell-axion theory including into the Lagrangian cross-terms of the dynamo-optical type, which are quadratic in the Maxwell tensor, linear in the covariant derivative of the macroscopic velocity four-vector, and linear in the pseudoscalar (axion) field or its gradient four-vector. We classify the new terms with respect to irreducible elements of the covariant derivative of the macroscopic velocity four-vector of the electromagnetically active medium: the expansion scalar, acceleration four-vector, shear and vorticity tensors. Master equations of the extended axion electrodynamics are used for the description of the response of an axionically active electrodynamic system, induced by a pp-wave gravitational background. We show that this response has a critical character, i.e., the electric and magnetic fields, dynamo-optically coupled to the axions, grow anomalously under the influence of the external pp-wave gravitational field.
description: 5 pages, based on talks on ICGAC-11, October, 1-5, 2013, Almaty
Effect of dispersion interactions on the properties of LiF in condensed phases
Creators: name: Corradini, Dario
name: Marrocchelli, Dario
name: Madden, Paul A.
name: Salanne, Mathieu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Classical molecular dynamics simulations are performed on LiF in the framework of the polarizable ion model. The overlap-repulsion and polarization terms of the interaction potential are derived on a purely non empirical, first-principles basis. For the dispersion, three cases are considered: a first one in which the dispersion parameters are set to zero and two others in which they are included, with different parameterizations. Various thermodynamic, structural and dynamic properties are calculated for the solid and liquid phases. The melting temperature is also obtained by direct coexistence simulations of the liquid and solid phases. Dispersion interactions appear to have an important effect on the density of both phases and on the melting point, although the liquid properties are not affected when simulations are performed in the NVT ensemble at the experimental density.
description: 8 pages, 5 figures
Additional file 3 of COM-1 and Hongcheon: New monazite reference materials for the microspot analysis of oxygen isotopic composition
Creators: name: Kim, Jeongmin
name: Park, Changkun
name: Yi, Keewook
name: Lee, Shinae
name: Kim, Sook Ju
name: Jung, Min-Ji
name: Cheong, Albert Chang-sik
Publisher: name: figshare
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geochemistry

description: Additional file 3. Table S3: Uncorrected secondary ion mass spectrometry δ18O values (‰) and electron probe microanalyzer data (wt.%) for the monazite reference materials.
On spinors, strings, integrable models and decomposed Yang-Mills theory
Creators: name: Ioannidou, Theodora
name: Jiang, Ying
name: Niemi, Antti J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: This paper deals with various interrelations between strings and surfaces in three dimensional ambient space, two dimensional integrable models and two dimensional and four dimensional decomposed SU(2) Yang-Mills theories. Initially, a spinor version of the Frenet equation is introduced in order to describe the differential geometry of static three dimensional string-like structures. Then its relation to the structure of the su(2) Lie algebra valued Maurer-Cartan one-form is presented; while by introducing time evolution of the string a Lax pair is obtained, as an integrability condition. In addition, it is show how the Lax pair of the integrable nonlinear Schroedinger equation becomes embedded into the Lax pair of the time extended spinor Frenet equation and it is described how a spinor based projection operator formalism can be used to construct the conserved quantities, in the case of the nonlinear Schroedinger equation. Then the Lax pair structure of the time extended spinor Frenet equation is related to properties of flat connections in a two dimensional decomposed SU(2) Yang-Mills theory. In addition, the connection between the decomposed Yang-Mills and the Gauss-Godazzi equation that describes surfaces in three dimensional ambient space is presented. In that context the relation between isothermic surfaces and integrable models is discussed. Finally, the utility of the Cartan approach to differential geometry is considered. In particular, the similarities between the Cartan formalism and the structure of both two dimensional and four dimensional decomposed SU(2) Yang-Mills theories are discussed, while the description of two dimensional integrable models as embedded structures in the four dimensional decomposed SU(2) Yang-Mills theory are presented.
Additional file 4 of COM-1 and Hongcheon: New monazite reference materials for the microspot analysis of oxygen isotopic composition
Creators: name: Kim, Jeongmin
name: Park, Changkun
name: Yi, Keewook
name: Lee, Shinae
name: Kim, Sook Ju
name: Jung, Min-Ji
name: Cheong, Albert Chang-sik
Publisher: name: figshare
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geochemistry

description: Additional file 4. Table S4: Laser ablation inductively coupled plasma mass spectrometry data for the monazite reference materials (ppm).
A class of transient acceleration models consistent with Big Bang Cosmology
Creators: name: Zu, Tianlong
name: Chen, Jiewen
name: Zhang, Yang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Is it possible that the current cosmic accelerating expansion will turn into a decelerating one? Can this transition be realized by some viable theoretical model that is consistent with the standard Big Bang cosmology? We study a class of phenomenological models of a transient acceleration, based on a dynamical dark energy with a very general form of equation of state $p_{de}=αρ_{de}-βρ_{de}^m$. It mimics the cosmological constant $ρ_{de}\rightarrow$ const for small scale factor $a$, and behaves as a barotropic gas with $ρ_{de}\rightarrow a^{-3(α+1)}$ with $α\ge 0$ for large $a$. The cosmic evolution of four models in the class has been examined in details, and all yields a smooth transient acceleration. Depending on the specific model, the future universe may be dominated either by the dark energy or by the matter. In two models, the dynamical dark energy can be explicitly realized by a scalar field with an analytical potential $V(ϕ)$. Moreover, the statistical analysis shows that the models can be as robust as $Λ$CDM in confronting the observational data of SN Ia, CMB, and BAO. As improvements over the previous studies, our models overcome the over-abundance problem of dark energy during early eras, and satisfy the constraints on the dark energy from WMAP observations of CMB.
description: 11 pages, 8 figures. To be published in RAA
SPHINX AI Honeypot v1
Creators: name: Apostolakis Dimitris
Publisher: name: Zenodo
Year: 2020
Subjects: Honeypots
Artificial Intelligence
HW/SW co-design
Heterogeneous Computing
VMs

description: Deliverable D4.4 reports on the implementation status of the SPHINX AI Honeypots. In this context, the document first provides a general overview of the Honeypots concept. Further to that it presents in detail the several types of Honeypots envisaged in the SPHINX ecosystem along with their internal structure and interfaces. In addition, a performance evaluation of the implemented API, through which other SPHINX entities are able to access the Honeypot generated data, is presented. It is noted that this deliverable reports on the results of the first iteration (M13-M20) of the associated task (T4.4).
Additional file 1 of The diurnal emission of floral scent in Oncidium hybrid orchid is controlled by CIRCADIAN CLOCK ASSOCIATED 1 (CCA1) through the direct regulation on terpene synthase
Creators: name: Yeh, Chao-Wei
name: Zhong, Hui-Qin
name: Ho, Yung-Feng
name: Tian, Zhi-Hong
name: Yeh, Kai-Wun
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Supplemental Fig. 1. The GC-MS spectrum of floral scent from Oncidium SB flowers in different times. The volatile terpenes, ocimene and linalool display the peaks at RT=11.31 and 12.91 respectively. The profiles decipher floral scents are diurnally emitted highly at 10:00 o’clock and lower at 18:00 o’clock. The GC spectrum showed that there is a circadian rhythm of floral scent emissions. Supplemental Fig. 2. The enzymatic activities assay of TPS. TPS recombinant protein was purified, then fed with the precursor GDP, and reacted at 37℃ for 4hrs. The GC-MS data suggested that the final product was linalool and ocimene. The SPME and GC-MS analysis conditions was described in text. Supplemental Fig. 3. The uncropped image of Fig. 6 was attached. In order to ensure the compliance with the digital image and integrity policies, the uncropped image of Fig. 6 was attached. At two lanes on the right, we increased the concentration of CCA1 when the competitor was added. As the result showed, the fluorescence intensities of free probe decreased. To focus on the interaction between CCA1 and CBS, Figure 6 didn’t show these two lanes.
Low-temperature data for carbon dioxide
Creators: name: Azreg-Aïnou, Mustapha
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We investigate the empirical data for the vapor pressure (154$ \leq$$T$$\leq$196 K) and heat capacity (15.52$ \leq$$T$$\leq$189.78 K) of the solid carbon dioxide. The approach is both theoretical and numerical, using a computer algebra system (CAS). From the latter point of view, we have adopted a cubic piecewise polynomial representation for the heat capacity and reached an excellent agreement between the available empirical data and the evaluated one. Furthermore, we have obtained values for the vapor pressure and heat of sublimation at temperatures below 195 right down to 0 K. The key prerequisites are the: 1) Determination of the heat of sublimation of 26250 J$\cdot$mol\textsuperscript{-1} at vanishing temperature and 2) Elaboration of a `linearized' vapor pressure equation that includes all the relevant properties of the gaseous and solid phases. It is shown that: 1) The empirical vapor pressure equation derived by Giauque & Egan remains valid below the assumed lower limit of 154 K (similar argument holds for Antoine's equation), 2) The heat of sublimation reaches its maximum value of 27211 J$\cdot$mol\textsuperscript{-1} at 58.829 K and 3) The vapor behaves as a (polyatomic) ideal gas for temperatures below 150 K.
description: 9 pages
The Effect of Planetary Illumination on Climate Modelling of Earthlike Exomoons
Creators: name: Forgan, Duncan
name: Yotov, Vergil
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: From analytical studies of tidal heating, eclipses and planetary illumination, it is clear that the exomoon habitable zone (EHZ) - the set of moon and host planet orbits that permit liquid water on an Earthlike moon's surface - is a manifold of higher dimension than the planetary HZ. This paper outlines the first attempt to produce climate models of exomoons which possess all the above sources and sinks of energy. We expand on our previous 1D latitudinal energy balance models (LEBMs), which follow the evolution of the temperature on an Earthlike moon orbiting a Jupiterlike planet, by adding planetary illumination. We investigate the EHZ in four dimensions, running two separate suites of simulations. The first investigates the EHZ by varying the planet's orbit, keeping the moon's orbit fixed, to compare the EHZ with planetary habitable zones. In general, planetary illumination pushes EHZs slightly further away from the star. Secondly, we fix the planet's orbit and vary the moon's orbit, to investigate the circumplanetary inner habitable edge. We demonstrate that an outer edge can exist due to eclipses (rather than merely orbital stability), but this edge may be pushed outwards when the effect of the carbonate-silicate cycle is taken into account.
description: 11 pages, 16 figures, accepted for publication in MNRAS
SPHINX Decision Support Engine v1
Creators: name: Panagiotidis, Panagiotis
Publisher: name: Zenodo
Year: 2020
Subjects: Decision Support System
Analytic Engine
Artificial Intelligence
Machine Learning

description: Practices that require significant involvement of human effort should be improved using techniques and mechanisms coming from the artificial intelligence domain, automating various decision-making processes. The goal is to promote decision-making based both on human and technological agents’ intelligence. Generally, a DSS exploits the technological agents’ intelligence combined with the human perception to make a final decision. The SPHINX toolkit needs to merge isolated data into higher-level knowledge of network-wide attack vulnerability and mission readiness in the face of cyber threats to go beyond rudimentary assessments of security posture and attack response. This document, which is the first version of a set of two deliverables, entails information on both the SPHINX Decision Support System (DSS) and Analytic Engine (AE), in order to provide an overview of the decision-making in SPHINX.
Optical selection of quasars: SDSS and LSST
Creators: name: Ivezic, Zeljko
name: Brandt, W. Niel
name: Fan, Xiaohui
name: MacLeod, Chelsea L.
name: Richards, Gordon T.
name: Yoachim, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Over the last decade, quasar sample sizes have increased from several thousand to several hundred thousand, thanks mostly to SDSS imaging and spectroscopic surveys. LSST, the next-generation optical imaging survey, will provide hundreds of detections per object for a sample of more than ten million quasars with redshifts of up to about seven. We briefly review optical quasar selection techniques, with emphasis on methods based on colors, variability properties and astrometric behavior.
description: 7 pages, 3 figures, presented at the IAU Symposium #304
Single qubit decoherence under a separable coupling to a random matrix environment
Creators: name: Carrera, M.
name: Gorin, T.
name: Seligman, T. H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper describes the dynamics of a quantum two-level system (qubit) under the influence of an environment modeled by an ensemble of random matrices. In distinction to earlier work, we consider here separable couplings and focus on a regime where the decoherence time is of the same order of magnitude than the environmental Heisenberg time. We derive an analytical expression in the linear response approximation, and study its accuracy by comparison with numerical simulations. We discuss a series of unusual properties, such as purity oscillations, strong signatures of spectral correlations (in the environment Hamiltonian), memory effects and symmetry breaking equilibrium states.
description: 13 pages, 7 figures
The Marangoni flow of soluble amphiphiles
Creators: name: Roché, Matthieu
name: Li, Zhenzhen
name: Griffiths, Ian M.
name: Roux, Sébastien Le
name: Cantat, Isabelle
name: Saint-Jalmes, Arnaud
name: Stone, Howard A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Surfactant distribution heterogeneities at a fluid/fluid interface trigger the Marangoni effect, i.e. a bulk flow due to a surface tension gradient. The influence of surfactant solubility in the bulk on these flows remains incompletely characterized. Here we study Marangoni flows sustained by injection of hydrosoluble surfactants at the air/water interface. We show that the flow extent increases with a decrease of the critical micelle concentration, i.e. the concentration at which these surfactants self-assemble in water. We document the universality of the surface velocity field and predict scaling laws based on hydrodynamics and surfactant physicochemistry that capture the flow features.
description: 5 pages, 4 figures, submitted
The physics of the optical light curve in supernovae
Creators: name: Zaninetti, L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a new formula which models the rate of decline of supernovae (SN) as given by the light curve in various bands. The physical basis is the conversion of the flux of kinetic energy into radiation. The two main components of the model are a power law dependence for the radius--time relation and a decreasing density with increasing distance from the central point. The new formula is applied to SN 1993J, SN 2005cf, SN 1999ac, and SN 2001el in different bands.
description: 9 figures and 18 pages
Master graphs of rice and thale cress mitogenomes
Creators: name: He
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310299
subject: Bioinformatics and computational biology not elsewhere classified
classificationCode: 310509
subject: Genomics
classificationCode: 310508
subject: Genome structure and regulation

description: Mitochondrial master graphs and plastid master graphs for organelle genomes of two plant model species.
title: Τουριστικά καταφύγια στην Ναυπακτία
title: Touristic shelters in Nafpaktia
Creators: name: Ανδρεοπουλου Ουρανια
Publisher: name: Technical University of Crete
Year: 2020

description: Η παρούσα διπλωματική εργασία αναφέρεται σε δυνατότητες εναλλακτικών μορφών αγροτουρισμού στον Δήμο Ναυπακτίας (νομός Αιτωλοακαρνανίας), μέσα από μια ανάλυση της αλληλεξάρτησης των τουριστικών και παραγωγικών τοπίων του Δήμου, με σκοπό την ανάδειξη της αγροτικής ζωής και παραγωγής ως στοιχείο ταυτότητας του τόπου, εντάσσοντας την στα πλαίσια της καθημερινότητας των τουριστών.
Απώτερος στόχος είναι η βιωματική εμπειρία του τουρίστα-επισκέπτη, μέσω της άμεσης επαφής του με το φυσικό τοπίο της περιοχής, το αγροτικό τοπίο και τις παραγωγικές δομές, η οποία και θα προσδώσει επιπλέον αξία στην παραγωγική δραστηριότητα και τόνωση της τοπικής οικονομίας.
Έτσι, αντικείμενο της έρευνας αρχικά αποτελεί μια γενική στρατηγική πρόταση σε επίπεδο Δήμου, με την δημιουργία ενός πιλοτικού δικτύου διάσπαρτων δομών με κοινά χαρακτηριστικά, που θα προσαρμόζεται στο εκάστοτε φυσικό τοπίο και θα «συνεργάζεται» με την εκάστοτε παραγωγική δραστηριότητα. Πρόκειται δηλαδή για δίκτυα αγροτουρισμού με υποστηρικτικές εγκαταστάσεις που θα προσπαθούν να επαναπροσδιορίσουν την έννοια του τουρισμού και να μετατρέψουν το τοπίο σε ενεργό πολιτισμικό “προϊόν”.
Σε ένα δεύτερο επίπεδο σχεδιασμού, η μελέτη εστιάζει στην δημιουργία των παραπάνω εγκαταστάσεων (ξενώνες, παραγωγικές δομές, κοινόχρηστοι χώροι) οι οποίες θα αποτελούν τους κόμβους αυτού του δικτύου, που με τρόπο οικολογικό, αναστρέψιμο και πολυμορφικό θα προσαρμόζονται στα διαφορετικά τοπία του Δήμου (ορεινά, παραθαλάσσια, παραποτάμια) δίνοντας την δυνατότητα ο επισκέπτης να βιώσει τον τόπο σαν μια ξεχωριστή συλλογή εμπειριών, δημιουργώντας νέες αλληλεπιδράσεις και ιδιαίτερες μορφές ΣΥΝ-κατοίκησης.
Cultural Creation and Production in the Inner West LGA: A Case-Study Needs Analysis
Creators: name: Pollio, Andrea
name: Ang, Ien
name: Rowe, David
name: Stevenson, Deborah
name: Magee, Liam
Publisher: name: Western Sydney University
Year: 2018

description: This report follows in the footsteps of research conducted between 2016 and 2018 for the City of Sydney Council, which had the principal aim of mapping and analysing the needs of creative venues in the local government area. Extending the case studies to 11 new venues in the Inner West LGA, the research reported here seeks to enhance understanding of the needs and challenges faced by creative space operators in the area. The reported research consists of 11 in-depth case studies of cultural venues/spaces, compiled through observational site visits and semi-structured interviews with 16 space managers and users.
Properties of powers of functions satisfying second-order linear differential equations with applications to statistics
Creators: name: Marumo, Naoki
name: Oaku, Toshinori
name: Takemura, Akimichi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We derive properties of powers of a function satisfying a second-order linear differential equation. In particular we prove that the n-th power of the function satisfies an (n+1)-th order differential equation and give a simple method for obtaining the differential equation. Also we determine the exponents of the differential equation and derive a bound for the degree of the polynomials, which are coefficients in the differential equation. The bound corresponds to the order of differential equation satisfied by the n-fold convolution of the Fourier transform of the function. These results are applied to some probability density functions used in statistics.
Virtual Machine for Resbaz 2019 workshop on "Publication ready scientific reports and presentations with Jupyter notebooks"
Creators: name: Fouilloux, Anne
Publisher: name: Zenodo
Year: 2019
Subjects: Ubuntu
jupyterlab
jupyterlab-latex
jupyterlab-git
python
LaTeX

description: This Virtual machine is running a Ubuntu  contains jupyterlab, jupyterlab latex and jupyterlab git extension.

The repository containing information on software that have been installed is:

https://github.com/annefou/jupyter_publish/tree/master

And associated workshop tutorial material is available at:

https://annefou.github.io/jupyter_publish/

A 1/2 day tutorial for creating publication ready scientific reports and presentations with Jupyter notebooks

Combining features of the Jupyter Notebook, WYSIWYG editors and the Latex document preparation system, to provide a workflow for:

	Dynamic editing and visualisation of key document components (text, math, figures, tables, references, citations, etc).
	Combine document elements with dynamic (and reproducible) data exploration, analysis and visualisation.
	Supply meta formatting for document and code elements for precise control over the final document layout and typesetting.
	Output the same source document to different layouts and formats (pdf, html, presentation slides, etc).
Optical variability of quasars: a damped random walk
Creators: name: Ivezic, Zeljko
name: MacLeod, Chelsea L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A damped random walk is a stochastic process, defined by an exponential covariance matrix that behaves as a random walk for short time scales and asymptotically achieves a finite variability amplitude at long time scales. Over the last few years, it has been demonstrated, mostly but not exclusively using SDSS data, that a damped random walk model provides a satisfactory statistical description of observed quasar variability in the optical wavelength range, for rest-frame timescales from 5 days to 2000 days. The best-fit characteristic timescale and asymptotic variability amplitude scale with the luminosity, black hole mass, and rest wavelength, and appear independent of redshift. In addition to providing insights into the physics of quasar variability, the best-fit model parameters can be used to efficiently separate quasars from stars in imaging surveys with adequate long-term multi-epoch data, such as expected from LSST.
description: 4 pages, 1 figure, presented at the IAU Symposium #304
Discrete Lorentz covariance for Quantum Walks and Quantum Cellular Automata
Creators: name: Arrighi, Pablo
name: Facchini, Stefano
name: Forets, Marcelo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We formalize a notion of discrete Lorentz transforms for Quantum Walks (QW) and Quantum Cellular Automata (QCA), in (1 + 1)-dimensional discrete spacetime. The theory admits a diagrammatic representation in terms of a few local, circuit equivalence rules. Within this framework, we show the first-order-only covariance of the Dirac QW. We then introduce the Clock QW and the Clock QCA, and prove that they are exactly discrete Lorentz covariant. The theory also allows for non-homogeneous Lorentz transforms, between non-inertial frames.
description: 21 pages, 15 figures
Supporting Information: Learning enables adaptation in cooperation for multi-player stochastic games
Creators: name: Huang, Feng
name: Cao, Ming
name: Wang, Long
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Biophysics
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Computational Biology

description: Interactions among individuals in natural populations often occur in a dynamically changing environment. Understanding the role of environmental variation in population dynamics has long been a central topic in theoretical ecology and population biology. However, the key question of how individuals, in the middle of challenging social dilemmas (e.g. the ‘tragedy of the commons’), modulate their behaviours to adapt to the fluctuation of the environment has not yet been addressed satisfactorily. Using evolutionary game theory, we develop a framework of stochastic games that incorporates the adaptive mechanism of reinforcement learning to investigate whether cooperative behaviours can evolve in the ever-changing group interaction environment. When the action choices of players are just slightly influenced by past reinforcements, we construct an analytical condition to determine whether cooperation can be favoured over defection. Intuitively, this condition reveals why and how the environment can mediate cooperative dilemmas. Under our model architecture, we also compare this learning mechanism with two non-learning decision rules, and we find that learning significantly improves the propensity for cooperation in weak social dilemmas, and, in sharp contrast, hinders cooperation in strong social dilemmas. Our results suggest that in complex social–ecological dilemmas, learning enables the adaptation of individuals to varying environments.
title: Understanding Spatial Characteristics of Refugee Accommodations Associated with Refugee Children’s Physical Activity in Microenvironments: Six Case Studies in Berlin
Creators: name: Chen, Siqi
name: Knöll, Martin
Publisher: name: UNSPECIFIED
Year: 2022

description: Refugee children often spend a considerable amount of time in refugee accommodations with limited space and limited access to communal facilities. Such environmental settings make it difficult for refugee children to engage in physical activity (PA), which is essential for their health and social inclusion. While there is a strong evidence base for environmental attributes associated with non-refugee children’s PA, only a few studies have focused on refugee children. This article presents an exploratory study on the spatial characteristics of six refugee accommodations in Berlin and their relation to school-aged refugee children’s opportunities to engage in PA. Micro-environmental attributes included building typology and availability, size, and access to communal PA spaces using Space Syntax. PA opportunities were assessed using staff surveys, interviews, and field trips. Results indicated that none of the case studies provided a comprehensive range of PA opportunities. They also revealed unequal access within the facilities. Whereas the role of size was inconsistent, vital predictors included fewer floors and corridors with easy access to internal and external PA spaces. Our recommendations include prioritizing compact buildings with moderate heights when retrofitting existing facilities and raising awareness for the importance of active play for this vulnerable group.
title: Entwicklung eines Mehrskalenmodells für Sandwichstrukturen mit dünnwandigen Kernen
Creators: name: Zoller, Jan
Publisher: name: UNSPECIFIED
Year: 2022

description: Im Rahmen der Finiten-Elemente-Methode sind Schalenelemente eine effiziente Möglichkeit, um das mechanische Verhalten flächiger Bauteile beschreiben zu können. In dieser Arbeit wird eine Schalenformulierung vorgestellt, die durch eine Mehrskalenbetrachtung die Behandlung von komplexen und detaillierten Materialzusammensetzungen ermöglicht. Dazu wird das effektive Materialverhalten der globalen Schale anhand einer repräsentativen, detaillierten lokalen Skala bestimmt. Das Verfahren basiert auf der Homogenisierungstheorie der FE^2-Methode unter Verwendung eines dreidimensionalen repräsentativen Volumenelements (RVE). Dies ermöglicht die Berücksichtigung von Inhomogenitäten sowohl über die Schalenhöhe als auch in der Schalenebene. Durch die Verwendung von Schalenelementen auch auf der lokalen Skala wird eine effiziente Beschreibung für Sandwichstrukturen mit dünnwandigen Kernen erreicht. Der Schwerpunkt wird auf die Betrachtung und Fortentwicklung der Randbedingungen im RVE gelegt. Vorhandene global-lokal gekoppelte Schalenformulierungen weisen eine Längenabhängigkeit der homogenisierten Querschubsteifigkeit von den Abmessungen des RVEs auf. Ursache hierfür ist ein linearer Momentenverlauf, welcher zusätzlich bei einer Querschubbeanspruchung auftritt. Außerdem kommt es bei den bisher verwendeten Verschiebungsrandbedingungen im RVE durch die strikte Verschiebungsvorgabe der Ränder zu störenden Randeffekten. Diese Randeffekte sind bei Anwendung periodischer Randbedingungen so nicht zu erwarten. Aus einer aufgebrachten Querschubbeanspruchung resultiert bei Verwendung von periodischen Randbedingungen im statischen Gleichgewicht jedoch eine Starrkörperbewegung. Somit ist die Bestimmung der Querschubsteifigkeit nicht möglich. Beide Problematiken lassen sich durch Einführen von Nebenbedingungen überwinden. Mithilfe der Nebenbedingungen wird zum einen die Verdrehung inmitten des RVEs im Mittel unterbunden und zum anderen der lineare Momentenverlauf infolge der Querkraft unterdrückt. Die Nebenbedingungen werden mit der Methode der Lagrange- Multiplikatoren implementiert. Das Modell ermöglicht die Ermittlung der Querschubsteifigkeiten bei periodischen Randbedingungen, welche nunmehr keiner Längenabhängigkeit unterliegen. Das Modell wird anhand ausgewählter Beispiele verifiziert und seine Anwendung demonstriert.
Background Electromagnetic Fields and NRQED Matching: Scalar Case
Creators: name: Lee, Jong-Wan
name: Tiburzi, Brian C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The low-energy structure of hadrons can be described systematically using effective field theory, and the parameters of the effective theory can be determined from lattice QCD computations. Recent work, however, points to inconsistencies between the background field method in lattice QCD and effective field theory matching conditions. We show that the background field problem necessitates inclusion of operators related by equations of motion. In the presence of time-dependent electromagnetic fields, for example, such operators modify Green's functions, thereby complicating the isolation of hadronic parameters which enter on-shell scattering amplitudes. The particularly simple case of a scalar hadron coupled to uniform electromagnetic fields is investigated in detail. At the level of the relativistic effective theory, operators related by equations of motion are demonstrated to be innocuous. The same result does not hold in the non-relativistic effective theory, and inconsistencies in matching are resolved by carefully treating operators related by equations of motion. As uniform external fields potentially allow for surface terms, the problem is additionally analyzed on a torus where such terms are absent. Finite-size corrections are derived for charged scalar correlation functions in uniform electric fields as a useful byproduct.
description: 15 pages
Stress relaxation models with polyconvex entropy in Lagrangean and Eulerian coordinates
Creators: name: Tzavaras, Athanasios E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L65, 36L75, 74B20, 82C40

description: The embedding of the equations of polyconvex elastodynamics to an augmented symmetric hyperbolic system provides in conjunction with the relative entropy method a robust stability framework for approximate solutions. We devise here a model of stress relaxation motivated by the format of the enlargement process which formally approximates the equations of polyconvex elastodynamics. The model is endowed with an entropy function which is not convex but rather of polyconvex type. Using the relative entropy we prove a stability estimate and convergence of the stress relaxation model to polyconvex elastodynamics in the smooth regime. As an application, we show that models of pressure relaxation for real gases in Eulerian coordinates fit into the proposed framework.
Effect of spin-orbit interaction on the critical temperature of an ideal Bose gas
Creators: name: Roy, Arunesh
name: Ray, Sayak
name: Sinha, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider Bose-Einstein condensation of an ideal bose gas with an equal mixture of `Rashba' and `Dresselhaus' spin-orbit interactions and study its effect on the critical temperature. In uniform bose gas a `cusp' and a sharp drop in the critical temperature occurs due to the change in the density of states at a critical Raman coupling where the degeneracy of the ground states is lifted. Relative drop in the critical temperature depends on the diluteness of the gas as well as on the spin-orbit coupling strength. In the presence of a harmonic trap, the cusp in the critical temperature smoothened out and a minimum appears. Both the drop in the critical temperature and lifting of `quasi-degeneracy' of the ground states exhibit crossover phenomena which is controlled by the trap frequency. By considering a 'Dicke' like model we extend our calculation to bosons with large spin and observe a similar minimum in the critical temperature near the critical Raman frequency, which becomes deeper for larger spin. Finally in the limit of infinite spin, the critical temperature vanishes at the critical frequency, which is a manifestation of Dicke type quantum phase transition.
description: 9 pages, 6 figures