cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modelo normativo de relaciones especiales.  Justificación moral de las obligaciones de atención auxiliar de la salud hacia los sujetos que participan de una investigación clínica.
Creators: name: Yanina, Fontana
Publisher: name: Zenodo
Year: 2019
Subjects: Obligaciones especiales, justificación moral, sujetos de investigación, investigación clínica, responsabilidad moral.

description: El objetivo de este trabajo es responder a la pregunta acerca de cuál es la naturaleza y límites de las obligaciones morales sobre la atención auxiliar de la salud de los investigadores hacia los participantes de una investigación clínica.  Responderé a la pregunta acerca de qué tipo de condiciones médicas, identificadas durante el curso del ensayo clínico, generan una responsabilidad al investigador de proveer cuidado médico, y cuál es la justificación moral de esa responsabilidad.
All orders proton breakup from exotic nuclei
Creators: name: García-Camacho, A.
name: Blanchon, G.
name: Bonaccorso, A.
name: Brink, D. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a semiclassical method to treat the proton breakup from a weakly bound state in an exotic nucleus. The Coulomb interactions between the proton, core and target are treated to all orders and including the full multipole expansion of the Coulomb potential. The nuclear proton-target interaction is also treated to all orders. The core-target interaction is included as an absorption. The method is semi-analytical thus allowing for a detailed understanding of the short range and long range effects of the interactions in the reaction dynamics. It explains also the origin of possible asymmetries in the core parallel momentum distributions when the full multipole expansion of the Coulomb potential is used. Calculations are compared to results of other, fully numerical, methods and to experimental data in order to establish the accuracy and reliability of the method.
description: 5 latex pages, 3 figures, 2 tables. Accepted for publication in Phys. Rev. C
On the Geometry of Numerical Ranges Over Finite Fields
Creators: name: Camenga, Kristin A.
name: Collins, Brandon
name: Hoefer, Gage
name: Quezada, Jonny
name: Rault, Patrick X.
name: Willson, James
name: Yates, Rebekah B. Johnson
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 15A60

description: Numerical ranges over a certain family of finite fields were classified in 2016 by a team including our fifth author. Soon afterward, in 2017 Ballico generalized these results to all finite fields and published some new results about the cardinality of the finite field numerical range. In this paper we study the geometry of these finite fields using the boundary generating curve, first introduced by Kippenhahn in 1951. We restrict our study to square matrices of dimension 2, with at least one eigenvalue in $\mathbb F_{q^2}$.
description: 17 pages, 2 figures; will appear in "Linear Algebra and its Applications", July 2021
Holographic Spectral Functions at Finite Baryon Density
Creators: name: Mas, Javier
name: Shock, Jonathan P.
name: Tarrio, Javier
name: Zoakos, Dimitrios
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the AdS/CFT correspondence, we compute the spectral functions of thermal super Yang Mills at large N_c coupled to a small number of flavours of fundamental matter, N_f<
description: 37 pages, 12 figures, v2: refs. added, typos corrected
The phase space view of f(R) gravity
Creators: name: de Souza, Jose C. C.
name: Faraoni, Valerio
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the geometry of the phase space of spatially flat Friedmann-Lemaitre-Robertson-Walker models in f(R) gravity, for a general form of the function f(R). The equilibrium points (de Sitter spaces) and their stability are discussed, and a comparison is made with the phase space of the equivalent scalar-tensor theory. New effective Lagrangians and Hamiltonians are also presented.
description: 14 pages, 2 figures, published in Classical and Quantum Gravity; references added
Controlling morphology in hybrid isotropic/patchy particle assemblies
Creators: name: Mushnoori, Srinivas
name: Logan, Jack A.
name: Tkachenko, Alexei V.
name: Dutt, Meenakshi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Brownian Dynamics is used to study self-assembly in a hybrid system of istotropic particles (IPs), combined with anisotropic building blocks that represent special "designer particles". Those are modeled as spherical patchy particles (PPs) with binding only allowed between their patches and IPs. In this study, two types of PPs are considered: Octahedral PPs (Oh-PPs) and Square PPs (Sq-PPs), with octahedral and square arrangements of patches, respectively. The self-assembly is additionally facilitated by the simulated annealing procedure. The resultant structures are characterized by a combination of local correlations in cubatic ordering, and a symmetry-specific variation of bond orientation order parameters (SymBOPs). By varying the PP/IP size ratio, we detected a sharp crossover between two distinct morphologies, in both types of systems. High symmetry phases, NaCl crystal for Oh-PP and square lattice for Sq-PP, are observed for larger size ratios. For smaller ones, the dominant morphologies are significantly different, e.g., Oh-PPs form a compact amorphous structure with predominantly Face-to-Face orientation of neighboring PPs. Unusually for a morphology without a long range order, it is still possible to identify well organized coherent clusters of this structure, thanks to the adoption of our SymBOP-based characterization.
description: 9 pages, 14 figures
D retention and material defects probed using Raman microscopy in JET limiter samples and beryllium-based synthesized samples
Creators: name: Pardanaud, C
name: Kumar, M
name: Roubin, P
name: Martin, C
name: Ferro, Y
name: Denis, J
name: Widdowson, A
name: Douai, D
name: Baldwin, M
name: Založnik, A
name: Lungu, C
name: Porosnicu, C
name: Dinca, P
name: Dittmar, T
name: Hakola, A
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We report on the detection by means of Raman spectroscopy of amorphous beryllium deuteride, BeD 2 , in magnetron sputtered deposits synthesized in two different laboratories and containing about 20 at.% of deuterium. In contrast, this signature has not been found for the JET limiter samples studied coming from the inner, outer or upper limiters, even when coming from a deposition zone of the limiters. We give a way to disentangle that BeD 2 signature from other signatures falling in the same spectroscopic range and mainly related to other phenomena. We also analyze the Raman characteristics of the JET sample defects. These results could help in the interpretation of D thermal desorption spectra and in future analyses of JET thick Be deposit divertor tiles.
Splitting Sensitivity of the Ground and 7.6 eV Isomeric States of 229Th
Creators: name: Hayes, A. C.
name: Friar, J. L
name: Moller, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The lowest-known excited state in nuclei is the 7.6 eV isomer of 229Th. This energy is within the range of laser-based investigations that could allow accurate measurements of possible temporal variation of this energy splitting. This in turn could probe temporal variation of the fine-structure constant or other parameters in the nuclear Hamiltonian. We investigate the sensitivity of this transition energy to these quantities. We find that the two states are predicted to have identical deformations and thus the same Coulomb energies within the accuracy of the model (viz., within roughly 30 keV). We therefore find no enhanced sensitivity to variation of the fine-structure constant. In the case of the strong interaction the energy splitting is found to have a complicated dependence on several parameters of the interaction, which makes an accurate prediction of sensitivity to temporal changes of fundamental constants problematical. Neither the strong- nor Coulomb-interaction contributions to the energy splitting of this doublet can be constrained within an accuracy better than a few tens of keV, so that only upper limits can be set on the possible sensitivity to temporal variations of the fundamental constants.
description: 4 pages, 2 figures
A study of the dynamic performance of a shaking table
Creators: name: Ramsay, Stephen Roderick
Publisher: name: University of British Columbia
Year: 2010

description: The dynamic performance of a shaking table used for studying the response of structures to seismic ground motion is investigated. The shaking table studied in this thesis is in the Earthquake Engineering Research Laboratory at the University of British Columbia. The theory of closed-loop feedback control systems is used as a basis for the study. A mathematical model of the shake table control system is developed using the techniques of linear control system analysis. This model is used to predict the shake table behavior analytically. The predicted performance is compared to the actual performance obtained experimentally. The model is generalized subsequently to include some non-linear effects present in the actual control system. The results of analytical studies performed with the non-linear model are compared to the real system behavior. The linear and non-linear models developed are shown to be useful for investigation of the performance of the shaking table. The results obtained compare well with the actual system performance.
Constructive Matrix Theory
Creators: name: Rivasseau, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend the technique of constructive expansions to compute the connected functions of matrix models in a uniform way as the size of the matrix increases. This provides the main missing ingredient for a non-perturbative construction of the $ϕ^{\star 4}_4$ field theory on the Moyal four dimensional space.
description: 12 pages, 3 figures
Heterogeneous Effects of Software Patches in a Multiplayer Online Battle Arena Game
Creators: name: He, Yuzi
name: Tran, Christopher
name: Jiang, Julie
name: Burghardt, Keith
name: Ferrara, Emilio
name: Zheleva, Elena
name: Lerman, Kristina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Information Retrieval (cs.IR)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: The popularity of online gaming has grown dramatically, driven in part by streaming and the billion-dollar e-sports industry. Online games regularly update their software to fix bugs, add functionality that improve the game's look and feel, and change the game mechanics to keep the games fun and challenging. An open question, however, is the impact of these changes on player performance and game balance, as well as how players adapt to these sudden changes. To address these questions, we use causal inference to measure the impact of software patches to League of Legends, a popular team-based multiplayer online game. We show that game patches have substantially different impacts on players depending on their skill level and whether they take breaks between games. We find that the gap between good and bad players increases after a patch, despite efforts to make gameplay more equal. Moreover, longer between-game breaks tend to improve player performance after patches. Overall, our results highlight the utility of causal inference, and specifically heterogeneous treatment effect estimation, as a tool to quantify the complex mechanisms of game balance and its interplay with players' performance.
description: 9 pages, 11 figures
Experiments needed in Meson and Baryon Spectroscopy
Creators: name: Bugg, D. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Three (or four) straightforward experiments would contribute greatly to completing the spectroscopy of baryons and light mesons. In the baryon sector, data are needed on inelastic reactions from a polarised target with pi and kaon beams up to 3 GeV/c. Similar data are needed in the light meson sector for pbar-p interactions in the momentum range 0.3 to 2 GeV/c. In both cases, valuable information is to be obtained from longitudinal (L) and sideways (S) target polarisations as well as the conventional normal (N) polarisation. Thirdly, 3S_1 and 3D_1 mesons in the mass range 1 to 2.4 GeV/c could probably be separated either by diffractive dissociation of transversely polarised photons or by radiative return experiments using transversely and longitudinally polarised electrons.
description: 12 pages, 3 figures Additional material included in Sections 2,3,4
title: Does legality matter?
title: The Case of Tax Avoidance and Evasion
titleType: Subtitle
Creators: name: Hundsdoerfer, Jochen
name: Blaufus, Kay
name: Jacob, Martin
name: Sünwoldt, Matthias
Publisher: name: Freie Universität Berlin
Year: 2016
Subjects: subject: Expressive Law
subject: Legality
subject: Moral Appeals
subject: Tax Avoidance
subject: Tax Evasion
subject: Real Effort Experiment
subject: 300 Sozialwissenschaften::330 Wirtschaft::336 Öffentliche Finanzen

description: Previous research argues that the law expresses social values and could, therefore, influence individual behavior independently of enforcement and penalization. Using three laboratory experiments on tax avoidance and evasion, we study how legality affects individuals’ decisions. We find that, without any risk of negative financial consequences, the qualification of tax minimization as illegal versus legal reduces tax minimization considerably. Legislators can thus, in principle, affect subjects’ decisions by defining the line between legality and illegality. However, once we introduce potential negative financial consequences, we observe no difference between legal and illegal tax minimization behavior. Only if we use moral priming to increase subjects’ moral cost do we again find a legality effect on tax minimization. Overall, this demonstrates the limitations of the expressive function of the law. Legality might be an important determinant of behavior only if we consider activities with little or no risk of negative financial consequences or if subjects are morally primed.
The justification of compulsory education
Creators: name: Case, Roland
Publisher: name: University of British Columbia
Year: 2010

description: Proponents of compulsory education have a responsibility to justify infringing upon, what is argued to be, children's basic right to liberty. This thesis is an attempt to spell out the criteria for and provide a description, of a justified compulsory education. The preliminary stage in this vindication of compulsory education is an articulation and defense of the necessary and sufficient conditions, for the moral justification of interference in general. The rationale for this approach is simple. Prior to tackling the derivative issues of compulsory schooling and compulsory curriculae, it is well advised to first sort out the grounds upon which any and all compulsion is justifiable. Coming to an understanding about, this fundamental issue helps to: untangle, if not substantially resolve, the educational polemics. The justification then turns directly to current educational theory. The liberal arts curriculum, as the prevailing emphasis in the existing educational system, is reviewed critically in light of these criteria. The liberal arts ideals, although commendable, are shown to exceed what is permissible to require in a mandatory curriculum. An account of a new, 'liberal', curriculum which fulfills the criteria for moral justification is presented. As well,, the constituent objectives and areas of study of this curriculum are defended as being legitimate educational pursuits. In other words, this new, liberal curriculum is shown to be both consistent with the grounds for the justification of compulsory education and compatible with the ideals of a liberal arts education.
Direct Measurements of Giant Star Effective Temperatures and Linear Radii: Calibration Against Spectral Types and V-K Color
Creators: name: van Belle, Gerard T.
name: von Braun, Kaspar
name: Ciardi, David R.
name: Pilyavsky, Genady
name: Buckingham, Ryan S.
name: Boden, Andrew F.
name: Clark, Catherine A.
name: Hartman, Zachary
name: van Belle, Gerald
name: Bucknew, William
name: Cole, Gary
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We calculate directly determined values for effective temperature ($T_{\rm EFF}$) and radius ($R$) for 191 giant stars based upon high resolution angular size measurements from optical interferometry at the Palomar Testbed Interferometer. Narrow- to wide-band photometry data for the giants are used to establish bolometric fluxes and luminosities through spectral energy distribution fitting, which allow for homogeneously establishing an assessment of spectral type and dereddened $V_{\rm 0}-K_{\rm 0}$ color; these two parameters are used as calibration indices for establishing trends in $T_{\rm EFF}$ and $R$. Spectral types range from G0III to M7.75III, $V_{\rm 0}-K_{\rm 0}$ from 1.9 to 8.5. For the $V_{\rm 0}-K_{\rm 0} = \{1.9,6.5\}$ range, median $T_{\rm EFF}$ uncertainties in the fit of effective temperature versus color are found to be less than 50K; over this range, $T_{\rm EFF}$ drops from 5050K to 3225K. Linear sizes are found to be largely constant at 11 $R_\odot$ from G0III to K0III, increasing linearly with subtype to 50 $R_\odot$ at K5III, and then further increasing linearly to 150 $R_\odot$ by M8III. Three examples of the utility of this data set are presented: first, a fully empirical Hertzsprung-Russell Diagram is constructed and examined against stellar evolution models; second, values for stellar mass are inferred based on measures of $R$ and literature values for $\log g$. Finally, an improved calibration of an angular size prediction tool, based upon $V$ and $K$ values for a star, is presented.
description: 310 pages, 16 figures, 21 tables, accepted to be published in The Astrophysical Journal
A setup for adjustment of process parameters for CBM module production
Creators: name: Soyk, D.
name: Simons, C.
name: Schmidt, C.
name: Tymchuk, I.
name: Protsenko, M.
name: Borshchov, V. M.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
An Improved Positioning Accuracy Method of a Robot Based on Particle Filter
Creators: name: Ali, Rashid
name: Hakro, Dil Nawaz
name: He, Yongping
name: Fu, Wenpeng
name: Cao, Zhiqiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper aims to improve the performance and positioning accuracy of a robot by using the particle filter method. The laser range information is a wireless navigation system mainly used to measure, position, and control autonomous robots. Its localization is more flexible to control than wired guidance systems. However, the navigation through the laser range finder occurs with a large positioning error while it moves or turns fast. For solving this problem, the paper proposes a method to improve the positioning accuracy of a robot in an indoor environment by using a particle filter with robust characteristics in a nonlinear or non-Gaussian system. In this experiment, a robot is equipped with a laser range finder, two encoders, and a gyro for navigation to verify the positioning accuracy and performance. The positioning accuracy and performance could improve by approximately 85.5% in this proposed method.
description: 12 pages, 6 figures, conference
Exploring Metastable States in UO$_2$ using Hybrid Functionals and Dynamical Mean Field Theory
Creators: name: Ratcliff, Laura E.
name: Genovese, Luigi
name: Park, Hyowon
name: Littlewood, Peter B.
name: Lopez-Bezanilla, Alejandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A detailed exploration of the $f$-atomic orbital occupancy space for UO$_2$ is performed using a first principles approach based on density functional theory (DFT), employing a full hybrid functional within a systematic basis set. Specifically, the PBE0 functional is combined with an occupancy biasing scheme implemented in a wavelet-based algorithm which is adapted to large supercells. The results are compared with previous DFT+U calculations reported in the literature, while dynamical mean field theory (DMFT) is also performed to provide a further base for comparison. This work shows that the computational complexity of the energy landscape of a correlated $f$-electron oxide is much richer than has previously been demonstrated. The resulting calculations provide evidence of the existence of multiple previously unexplored metastable electronic states of UO$_2$, including those with energies which are lower than previously reported ground states.
Event based unpacker and digitizer for the CBM TOF in CBMROOT
Creators: name: Loizeau, P.-A.
name: Herrmann, N.
name: Kresan, D.
name: Uhlig, F.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
Improving Super-Resolution Performance using Meta-Attention Layers
Creators: name: Aquilina, Matthew
name: Galea, Christian
name: Abela, John
name: Camilleri, Kenneth P.
name: Farrugia, Reuben A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Convolutional Neural Networks (CNNs) have achieved impressive results across many super-resolution (SR) and image restoration tasks. While many such networks can upscale low-resolution (LR) images using just the raw pixel-level information, the ill-posed nature of SR can make it difficult to accurately super-resolve an image which has undergone multiple different degradations. Additional information (metadata) describing the degradation process (such as the blur kernel applied, compression level, etc.) can guide networks to super-resolve LR images with higher fidelity to the original source. Previous attempts at informing SR networks with degradation parameters have indeed been able to improve performance in a number of scenarios. However, due to the fully-convolutional nature of many SR networks, most of these metadata fusion methods either require a complete architectural change, or necessitate the addition of significant extra complexity. Thus, these approaches are difficult to introduce into arbitrary SR networks without considerable design alterations. In this paper, we introduce meta-attention, a simple mechanism which allows any SR CNN to exploit the information available in relevant degradation parameters. The mechanism functions by translating the metadata into a channel attention vector, which in turn selectively modulates the network's feature maps. Incorporating meta-attention into SR networks is straightforward, as it requires no specific type of architecture to function correctly. Extensive testing has shown that meta-attention can consistently improve the pixel-level accuracy of state-of-the-art (SOTA) networks when provided with relevant degradation metadata. For PSNR, the gain on blurred/downsampled (X4) images is of 0.2969 dB (on average) and 0.3320 dB for SOTA general and face SR models, respectively.
description: Accepted for publication in the IEEE Signal Processing Letters. This is the accepted version of the paper, for the final formatted version and supplementary information, please visit the IEEE's publication at the linked DOI
Enrichment of the ISM by metal-rich droplets and the abundance bias in HII regions
Creators: name: Stasinska, Grazyna
name: Tenorio-Tagle, Guillermo
name: Rodriguez, Monica
name: Henney, William J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We critically examine a scenario for the enrichment of the interstellar medium (ISM) in which supernova ejecta follow a long (10^8 yr) journey before falling back onto the galactic disk in the form of metal-rich ``droplets'', These droplets do not become fully mixed with the interstellar medium until they become photoionized in HII regions. We investigate the hypothesis that the photoionization of these highly metallic droplets can explain the observed ``abundance discrepancy factors'' (ADFs), which are found when comparing abundances derived from recombination lines and from collisionally excited lines, both in Galactic and extragalactic HII regions. We derive bounds of 10^{13}--10^{15} cm on the droplet sizes inside HII regions in order that (1) they should not have already been detected by direct imaging of nearby nebulae, and (2) they should not be too swiftly destroyed by diffusion in the ionized gas. From photoionization modelling we find that, if this inhomogeneous enrichment scenario holds, then the recombination lines strongly overestimate the metallicities of the fully mixed HII regions. The abundances derived from collisionally excited lines also suffer some bias, although to a much lesser extent. In the absence of any recipe for correcting these biases, we recommend the discarding of all objects showing large ADFs from studies of galactic chemical evolution. These biases must also be kept in mind when comparing the galactic abundance gradients for elements derived from recombination lines with those derived from collisionally excited lines. Finally, we propose a set of observations that could be undertaken to test our scenario and improve our understanding of element mixing in the ISM.
description: 14 pages, 5 figures, accepted in Astronomy and Astrophysics
Spatio temporal analysis of waves in compressively driven magnetohydrodynamics turbulence
Creators: name: Brodiano, Maia
name: Andrés, Nahuel
name: Dmitruk, Pablo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Using direct numerical simulations (DNSs), the interaction between linear waves and turbulence under the compressible magnetohydrodynamic (CMHD) approach was studied. A set of DNSs in three dimensions for a spatial resolution of $128^3$ and $256^3$ were performed. A parametric study was carried out varying the sonic Mach number, the mean magnetic field and the compressibility amplitude of the forcing. Spatio-temporal spectra of the magnetic energy were built and analyzed, allowing for direct identification of all wave modes in a CMHD turbulent system and quantification of the amount of energy in each mode as a function of the wave number. Thus, linear waves were detected, that is Alfvén waves and fast and slow magnetosonic waves. Furthermore, different responses of the plasma were found according to whether the Mach number or the mean magnetic field was varied. On the other hand, making use of spatio-temporal spectra and two different integration methods, we accurately quantified the amount of energy present in each of the normal modes. Finally, although the presence of linear waves was observed, in all the cases studied the system was mainly dominated by the non-linear dynamics of the plasma.
description: arXiv admin note: substantial text overlap with arXiv:1707.09190
APOGEE Chemical Abundance Patterns of the Massive Milky Way Satellites
Creators: name: Hasselquist, Sten
name: Hayes, Christian R.
name: Lian, Jianhui
name: Weinberg, David H.
name: Zasowski, Gail
name: Horta, Danny
name: Beaton, Rachael
name: Feuillet, Diane K.
name: Garro, Elisa R.
name: Gallart, Carme
name: Smith, Verne V.
name: Holtzman, Jon A.
name: Minniti, Dante
name: Lacerna, Ivan
name: Shetrone, Matthew
name: Jönsson, Henrik
name: Cioni, Maria-Rosa L.
name: Fillingham, Sean P.
name: Cunha, Katia
name: OĆonnell, Robert
name: Fernández-Trincado, José G.
name: Muñoz, Ricardo R.
name: Schiavon, Ricardo
name: Almeida, Andres
name: Anguiano, Borja
name: Beers, Timothy C.
name: Bizyaev, Dmitry
name: Brownstein, Joel R.
name: Cohen, Roger E.
name: Frinchaboy, Peter
name: García-Hernández, D. A.
name: Geisler, Doug
name: Lane, Richard R.
name: Majewski, Steven R.
name: Nidever, David L.
name: Nitschelm, Christian
name: Povick, Joshua
name: Price-Whelan, Adrian
name: Roman-Lopes, Alexandre
name: Rosado, Margarita
name: Sobeck, Jennifer
name: Stringfellow, Guy
name: Valenzuela, Octavio
name: Villanova, Sandro
name: Vincenzo, Fiorenzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The SDSS-IV Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey has obtained high-resolution spectra for thousands of red giant stars distributed among the massive satellite galaxies of the Milky Way (MW): the Large and Small Magellanic Clouds (LMC/SMC), the Sagittarius Dwarf (Sgr), Fornax (Fnx), and the now fully disrupted \emph{Gaia} Sausage/Enceladus (GSE) system. We present and analyze the APOGEE chemical abundance patterns of each galaxy to draw robust conclusions about their star formation histories, by quantifying the relative abundance trends of multiple elements (C, N, O, Mg, Al, Si, Ca, Fe, Ni, and Ce), as well as by fitting chemical evolution models to the [$α$/Fe]-[Fe/H] abundance plane for each galaxy. Results show that the chemical signatures of the starburst in the MCs observed by Nidever et al. in the $α$-element abundances extend to C+N, Al, and Ni, with the major burst in the SMC occurring some 3-4 Gyr before the burst in the LMC. We find that Sgr and Fnx also exhibit chemical abundance patterns suggestive of secondary star formation epochs, but these events were weaker and earlier ($\sim$~5-7 Gyr ago) than those observed in the MCs. There is no chemical evidence of a second starburst in GSE, but this galaxy shows the strongest initial star formation as compared to the other four galaxies. All dwarf galaxies had greater relative contributions of AGB stars to their enrichment than the MW. Comparing and contrasting these chemical patterns highlight the importance of galaxy environment on its chemical evolution.
description: 37 pages, 21 figures, accepted for publication in ApJ
Introduction to the Fourth International Symposium on Platial Information Science
Creators: name: Westerholt, René
name: Mocnik, Franz-Benjamin
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: 710

description: Places are not static. For example, social-ecological sacrifice zones influence how people see their own existence in partly economically shaped areas with detrimental social and health characteristics, or even support the formation of these zones through place-making. Likewise, gentrification can lead to territorial conflicts, including cultural hegemony, possibly leading to othering of previously resident people. The Ruhr – where PLATIAL'23 took place – is a prime example of transformation itself, as it has undergone significant change as a (post-)industrial area over the last 150 years. These processes of transformation are not exceptions but the rule when it comes to fluid instantiations of place. PLATIAL'23 invited researchers to explore how transformations (in a broad sense) not only manifest in places themselves but are also reflected in platial information. Concepts of place based on social ontologies instead of merely geometric space conceptions are inherently predisposed to fluidity and change. However, this character is often not reflected in the way GIScience and related disciplines represent and analyse platial information yet. The symposium contributed to this topic in terms of both conceptual and empirical contributions from a range of disciplinary backgrounds.
BIBLIOMETRIK KO'RSATKICHLARINI TAHLIL QILISH USULLARI
Creators: name: Ganiyeva, Barno
name: Eshquvvatova, Zebiniso
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada bugungi kunda tadqiqotlarni baholashda qo’llaniladigan bibliometrik tahlil, aniqlash ko’rsatkichlari, ularni tahlil etish usullari keng yoritib berilgan.
Proton structure corrections to electronic and muonic hydrogen hyperfine splitting
Creators: name: Carlson, Carl E.
name: Nazaryan, Vahagn
name: Griffioen, Keith
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a precise determination of the polarizability and other proton structure dependent contributions to the hydrogen hyperfine splitting, based heavily on the most recent published data on proton spin dependent structure functions from the EG1 experiment at the Jefferson Laboratory. As a result, the total calculated hyperfine splitting now has a standard deviation slightly under 1 part-per-million, and is about 1 standard deviation away from the measured value. We also present results for muonic hydrogen hyperfine splitting, taking care to ensure the compatibility of the recoil and polarizability terms.
description: 9 pages, 1 figure
Thermodynamic Evolution of Solar Flare Supra-arcade Downflows
Creators: name: Li, Z. F.
name: Cheng, X.
name: Ding, M. D.
name: Reeves, Katharine K.
name: Kittrell, DeOndre
name: Weber, Mark
name: McKenzie, David E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar flares are rapid energy release phenomena that appear as bright ribbons in the chromosphere and high-temperature loops in the corona, respectively. Supra-arcade Downflows (SADs) are plasma voids that first come out above the flare loops and then move quickly towards the flare loop top during the decay phase of the flare. In our work, we study 20 SADs appearing in three flares. By differential emission measure (DEM) analysis, we calculate the DEM weighted average temperature and emission measure (EM) of the front region and the main body of SADs. It is found that the temperatures of the SAD front and body tend to increase during the course of SADs flowing downwards. The relationship between the pressure and temperature fits well with the adiabatic equation for both the SAD front and body, suggesting that the heating of SADs is mainly caused by adiabatic compression. Moreover, we also estimate the velocities of SADs via the Fourier Local Correlation Tracking (FLCT) method and find that increase of the temperature of the SAD front presents a correlation with the decrease of the SAD kinetic energy, while the SAD body does not, implying that the viscous process may also heat the SAD front in spite of a limited role.
description: 12 pages, 10 figures; published by ApJ
BUYUK MUTAKALLIM VA MUHADDIS OLIM IMOM AL-BUXORIY YASHAGAN VA IJOD QILGAN DAVR
Creators: name: Mirzamiddinov, Asliddin
name: Raxmatullayev, Ravshan
Publisher: name: Zenodo
Year: 2025

description: Maqolada Buyuk alloma va mutafakkir, Hadis ilmimig sultoni Imom al-Buxoriy  o‘zining bebaho ilmiy va ma’naviy – ma’rifiy ilmiy merosini butun insoniyatga qoldirgan. Shuningdek o‘zining yashab ijod etgan davrida ustozlaridan olgan ilmlarini yosh tolibi ilmlarga yetkazish maqsadida turli mamlakatlarda ilm davralarini qurib, hadis ilmini yoyishga xizmat qilganligi yoritib o‘tilgan.
Projective superspace and hyperkahler sigma models on cotangent bundles of Hermitian symmetric spaces
Creators: name: Arai, Masato
name: Kuzenko, Sergei M.
name: Lindstrom, Ulf
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the projective-superspace construction of four-dimensional N=2 supersymmetric sigma models on (co)tangent bundles of the classical Hermitian symmetric spaces.
description: 4 pages. Contribution to the proceedings of PASCOS-07, 2-7 July 2007, Imperial College, London
Implementation of an adaptive controller on a TI TM 990 microcomputer
Creators: name: Tooba, Bahram
Publisher: name: University of British Columbia
Year: 2010

description: The thesis tests the implementation of an adaptive identifier and controller on a Texas Instrument TM 990 microcomputer system. The adaptive algorithm was proposed by Martin-Sanchez [20], and was selected because of the small amount of computation needed in comparison with methods such as recursive least squares estimation. The controller is similar to a simplified minimum variance controller used in self-tuning regulators. The thesis describes the adaptive algorithm and the hardware and software used in the microcomputer implementation of this method. The results show operation of the algorithms for first-order and second-order processes.
First order Mott transition at zero temperature in two dimensions: Variational plaquette study
Creators: name: Balzer, Matthias
name: Kyung, Bumsoo
name: Sénéchal, David
name: Tremblay, A. -M. S.
name: Potthoff, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The nature of the metal-insulator Mott transition at zero temperature has been discussed for a number of years. Whether it occurs through a quantum critical point or through a first order transition is expected to profoundly influence the nature of the finite temperature phase diagram. In this paper, we study the zero temperature Mott transition in the two-dimensional Hubbard model on the square lattice with the variational cluster approximation. This takes into account the influence of antiferromagnetic short-range correlations. By contrast to single-site dynamical mean-field theory, the transition turns out to be first order even at zero temperature.
description: 6 pages, 5 figures, version 2 with additional results for 8 bath sites
ABCD Matrices as Similarity Transformations of Wigner Matrices and Periodic Systems in Optics
Creators: name: Baskal, S.
name: Kim, Y. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The beam transfer matrix, often called the $ABCD$ matrix, is a two-by-two matrix with unit determinant, and with three independent parameters. It is noted that this matrix cannot always be diagonalized. It can however be brought by rotation to a matrix with equal diagonal elements. This equi-diagonal matrix can then be squeeze-transformed to a rotation, to a squeeze, or to one of the two shear matrices. It is noted that these one-parameter matrices constitute the basic elements of the Wigner's little group for space-time symmetries of elementary particles. Thus every $ABCD$ matrix can be written as a similarity transformation of one of the Wigner matrices, while the transformation matrix is a rotation preceded by a squeeze. This mathematical property enables us to compute scattering processes in periodic systems. Laser cavities and multilayer optics are discussed in detail. For both cases, it is shown possible to write the one-cycle transfer matrix as a similarity transformation of one of the Wigner matrices. It is thus possible to calculate the $ABCD$ matrix for an arbitrary number of cycles.
description: LaTeX 18 pages
Evolution towards energy equipartition in star clusters: effects of the tidal field, primordial binaries, and internal velocity anisotropy
Creators: name: Pavlík, Václav
name: Vesperini, Enrico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This paper is the second in a series investigating the evolution of star clusters towards energy equipartition (EEP). Here, we focus on the effects of the external tidal field of the host galaxy, initial anisotropy in the velocity distribution, and primordial binary star population. The results of our $N$-body simulations show that regardless of the strength of the tidal field or the fraction of primordial binaries: (i) the evolution towards EEP in the intermediate and outer regions of initially anisotropic systems is more rapid than for isotropic systems; (ii) this evolution also proceeds at different rates for the tangential and radial components of the velocity dispersion; and (iii) the outer regions of the initially isotropic systems show a tendency to evolve towards a state of `inverted' EEP in which low-mass stars have smaller velocity dispersion than high-mass stars. We also find that the clusters with primordial binaries stay even farther from EEP than systems containing only single stars. Finally, we show that all these results also hold when the degree of EEP is calculated using quantities measured in projection as it is done in observational studies, and that our findings could be tested with current and upcoming observational data.
description: 11 pages, 2 tables, 13 figures, accepted for publication in MNRAS
Systematic modeling for optimization
Creators: name: Esche, Erik
name: Müller, David
name: Wozny, Günter
Publisher: name: Technische Universität Berlin
Year: 2014
Subjects: subject: 660 Chemische Verfahrenstechnik
subject: multiple-scale modeling
subject: optimization
subject: convexification
subject: linearization

description: Optimization usually requires models, which are computationally speaking less expensive than models commonly used for simulations. At the same time, process optimization and model predictive control etc. require dependable accuracies in addition to the fastness. To demystify the art of preparing process models for optimization, a workflow is presented in this contribution, which systematically deduces models based on simplification of existing models and experiment based deduction of computationally inexpensive correlations.
First Doppler Limits on Binary Planets and Exomoons in the HR 8799 System
Creators: name: Vanderburg, Andrew
name: Rodriguez, Joseph E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We place the first constraints on binary planets and exomoons from Doppler monitoring of directly imaged exoplanets. We model radial velocity observations of HR 8799 b, c, and d from Ruffio et al. (2021) and determine upper limits on the $m\sin{i}$ of short-period binary planets and satellites. At 95% confidence, we rule out companions orbiting the three planets more massive than $m\sin{i} = 2 M_J$ with orbital periods shorter than 5 days. We achieve our tightest constraints on moons orbiting HR 8799 c, where with 95% confidence we rule out out edge-on Jupiter-mass companions in periods shorter than 5 days and edge-on half-Jupiter-mass moons in periods shorter than 1 day. These radial velocity observations come from spectra with resolution 20 times lower than typical radial velocity instruments and were taken using a spectrograph that was designed before the first directly imaged exoplanet was discovered. Similar datasets from new and upcoming instruments will probe significantly lower exomoon masses.
description: 8 pages, 2 figures, 1 table, and one .csv file of mass upper limits as a function of orbital period included in the source code. Accepted for publication in ApJ Letters
Systematic parameter selection for optimization under uncertainty
Creators: name: Müller, David
name: Esche, Erik
name: Lopez C., Diana C.
name: Wozny, Günter
Publisher: name: Technische Universität Berlin
Year: 2014
Subjects: subject: 660 Chemische Verfahrenstechnik
subject: uncertainty
subject: parameter estimation
subject: optimization
subject: Monte Carlo simulation

description: Considering uncertainty is crucial for the decision making process in chemical engineering. However, when working in optimization under uncertainty a systematic selection of relevant uncertain parameters is required. In this contribution, an algorithm is presented in which uncertain parameters are selected based on their linear- independence to one another, their sensitivity towards state variables, and their sensitivity towards a user-defined process objective function. This workflow is applied in a case study. To analyze the information loss due to the reduction of uncertain parameters, Monte Carlo simulations are performed.
Optimal operation of a membrane reactor network
Creators: name: Esche, Erik
name: Arellano‐Garcia, Harvey
name: Biegler, Lorenz T.
Publisher: name: Technische Universität Berlin
Year: 2013
Subjects: subject: 660 Chemische Verfahrenstechnik
subject: OCM
subject: membrane reactor network
subject: orthogonal collocation
subject: large‐scale NLP

description: In this contribution, the operation of a membrane reactor network (MRN) for the oxidative coupling of methane is optimized. Therefore, three reactors, a fixed bed reactor (FBR) and two packed bed‐membrane reactors, are modeled. For the (CPBMR), a two‐dimensional (2‐D) model is presented. This model incorporates radial diffusion and thermal conduction. In addition, two 10 cm long cooling segments for the CPBMR are implemented based on the idea of a fixed cooling temperature positioned outside the reactor shell. The model is discretized using a newly developed 2‐D orthogonal collocation on finite elements with a combination of Hermite for the radial and Lagrangian polynomials for the axial coordinate. Membrane thickness, feed compositions, temperatures at the inlet and for the cooling, diameters, and the amount of inert packing in the reactors are considered as decision variables. The optimization results in C2 yields of up to 40% with a selectivity in C2 products of more than 60%. The MRN consisting of an additional packed‐bed membrane reactor with an alternative feeding policy and a FBR shows a lower yield than the individual CPBMR.
Anatomy of Quantum Biology
Creators: name: Osadebe, Mishack
Publisher: name: figshare
Year: 2021
Subjects: subject: Applied Physics
subject: Atomic Physics
subject: 20201 Atomic and Molecular Physics
subject: FOS: Physical sciences
subject: 29901 Biological Physics
subject: FOS: Biological sciences
subject: 20602 Field Theory and String Theory
subject: General Relativity
subject: 20203 Particle Physics
subject: Quantum Mechanics
subject: Special Relativity

description: Throughout history, equations have been pulling the strings of society and are the lifeblood of mathematics, science, and technology. Without them, our world would not exist in its present form. While equations have a reputation for being scary, formal, austere, and look complicated, the almanac of the equation 2+2=2×2 introduces new and provocative research that advances our understanding of Quantum Biology. In understandable language and cutting-edge insights based on compelling evidence that shows that quantum biology plays a more important role other than those imposed by the environment, the strong correspondence of its roles to specific features assessable to its counterpart in physics while displacing it from the accepted locus as the aftermath of quantum mechanics is the basic theme of this research.