cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ammonia mapping observations toward the Galactic massive star-forming region Sh 2-255 and Sh 2-257
Creators: name: Kohno, Mikito
name: Omodaka, Toshihiro
name: Handa, Toshihiro
name: Chibueze, James O.
name: Nagayama, Takumi
name: Burns, Ross A.
name: Murase, Takeru
name: Matsusaka, Ren
name: Nakano, Makoto
name: Sunada, Kazuyoshi
name: Yamada, Rin I.
name: Bieging, John H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We performed NH$_3\ (J,K)=(1,1),(2,2),$ and $(3,3)$ mapping observations toward the Galactic massive star-forming region Sh 2-255 and Sh 2-257 using the Nobeyama 45-m telescope as a part of the KAGONMA (KAgoshima Galactic Object survey with the Nobeyama 45-metre telescope by Mapping in Ammonia lines) project. NH$_3$ (1,1) has an intensity peak at the cluster S255 N, is distributed over 3 pc $\times$ 2 pc and is located between two HII regions. The kinetic temperature derived from the NH$_3 (2,2)/(1,1)$ ratio was $\sim 35$ K near the massive cluster S255 IR. These clusters also show emission with a large line width of $\sim$ 3-4 km s$^{-1}$. Based on the reported data we suggest that NH$_3$ gas in these regions is affected by stellar feedback from embedded YSO clusters in S255 IR and S255 N. We also detected NH$_3$ (1,1) emission in a region west of the main gas clump at the location of a concentration of Class II YSOs adjacent to the HII regions Sh 2-254. The presence of Class II YSOs implies $\sim$ 2 Myr of star formation, younger than Sh 2-254 ($\sim 5$ Myr), thus we suggest that star formation in the western region could be influenced by the older HII region Sh 2-254.
description: 20 pages, 8 figures, 3 tables, accepted for Publications of the Astronomical Society of Japan (PASJ)
title: Biochemical Analysis of Fossil and Living Plants
Creators: name: Logan, Karen Jane
Publisher: name: Goldsmiths, University of London
Year: 1982

description: Lignin oxidation products from a variety of living and fossil plants were obtained using the alkaline cupric oxide method. The aldehydes and ketones obtained were separated by gas chromatography and gas chromatography/mass spectroscopy was used to verify the structures of the lignin oxidation products. Vanillin remained the major ligning oxidation product obtained from the lignin of gymnosperms. However small amounts of p-hydroxybenzaldehyde and syringic aldehyde were obtained from all the symnospermous ligning examined. Immature dicotyledons and the woodmeal of the monocotyledons examined gave varying emounts of p-hydroxybenzaldehyde when oxidized. No phydoxybenzaldehyde was detected from the lignin of the monoxotyledon fibres examined. Syringic aldehyde remained the major lignin oxidation product obtained from the angiosperms. All three types of lignin nuclei were obtained in small amounts from several lower plants including the mosses and liverworts. No correlation between the presence of syringic aldehyde and the occurrence of vessels was found. The suggestion that it is the fibres in plants which contribute to the presence of syringic aldehyde is made. All three types of lignin nuclei were observed from certain fossil wood, fossil compressions and coals. Syringic aldehyde remained as a lignin oxidation product in bituminous coals of 3OO million years old. Lignin derivatives can be used as supporting evidence for anatomical and morphological studies. However lignin derivatives cannot be used as characteristics for fossil compressions and coals because chemical changes which occur alter the original phenolic aldehyde ratios. Only speculations can be made.
A holistic approach to understand Helium enrichment in Interplanetary coronal mass ejections: New insights
Creators: name: Yogesh
name: Chakrabarty, D.
name: Srivastava, N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Despite helium abundance (AHe = nH/nHe) is ~ 8 % at the solar photospheric/chromospheric heights, AHe can be found to exceed 8% in interplanetary coronal mass ejections (ICMEs) on many occasions. Although various factors like interplanetary shocks, chromospheric evaporation and "sludge removal" have been separately invoked in the past to address the AHe enhancements in ICMEs, none of these processes could explain the variability of AHe in ICMEs comprehensively. Based on extensive analysis of 275 ICME events, we show that there is a solar activity variation of ICME averaged AHe values. The investigation also reveals that the first ionization potential effect as well as coronal temperature are not the major contributing factors for AHe enhancements in ICMEs. Investigation on concurrent solar flares and ICME events for 63 cases reveals that chromospheric evaporation in tandem with gravitational settling determine the AHe enhancements and variabilities beyond 8% in ICMEs. While chromospheric evaporation releases the helium from chromosphere into the corona, the gravitationally settled helium is thrown out during the ICMEs.We show that the intensity and timing of the preceding flares from the same active region from where the CME erupts are important factors to understand the AHe enhancements in ICMEs.
OneLog: Towards End-to-End Training in Software Log Anomaly Detection
Creators: name: Hashemi, Shayan
name: Mäntylä, Mika
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: With the growth of online services, IoT devices, and DevOps-oriented software development, software log anomaly detection is becoming increasingly important. Prior works mainly follow a traditional four-staged architecture (Preprocessor, Parser, Vectorizer, and Classifier). This paper proposes OneLog, which utilizes a single Deep Neural Network (DNN) instead of multiple separate components. OneLog harnesses Convolutional Neural Networks (CNN) at the character level to take digits, numbers, and punctuations, which were removed in prior works, into account alongside the main natural language text. We evaluate our approach in six message- and sequence-based data sets: HDFS, Hadoop, BGL, Thunderbird, Spirit, and Liberty. We experiment with Onelog with single-, multi-, and cross-project setups. Onelog offers state-of-the-art performance in our datasets. Onelog can utilize multi-project datasets simultaneously during training, which suggests our model can generalize between datasets. Multi-project training also improves Onelog performance making it ideal when limited training data is available for an individual project. We also found that cross-project anomaly detection is possible with a single project pair (Liberty and Spirit). Analysis of model internals shows that one log has multiple modes of detecting anomalies and that the model learns manually validated parsing rules for the log messages. We conclude that character-based CNNs are a promising approach toward end-to-end learning in log anomaly detection. They offer good performance and generalization over multiple datasets. We will make our scripts publicly available upon the acceptance of this paper.
Online Bayesian Optimization for a Recoil Mass Separator
Creators: name: Miskovich, S. A.
name: Montes, F.
name: Berg, G. P. A.
name: Blackmon, J.
name: Chipps, K. A.
name: Couder, M.
name: Deibel, C. M.
name: Hermansen, K.
name: Hood, A. A.
name: Jain, R.
name: Ruland, T.
name: Schatz, H.
name: Smith, M. S.
name: Tsintari, P.
name: Wagner, L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The SEparator for CApture Reactions (SECAR) is a next-generation recoil separator system at the Facility for Rare Isotope Beams (FRIB) designed for the direct measurement of capture reactions on unstable nuclei in inverse kinematics. To maximize the performance of this system, stringent requirements on the beam alignment to the central beam axis and on the ion-optical settings need to be achieved. These can be difficult to attain through manual tuning by human operators without potentially leaving the system in a sub-optimal and irreproducible state. In this work, we present the first development of online Bayesian optimization with a Gaussian process model to tune an ion beam through a nuclear astrophysics recoil separator. We show that this method achieves small incoming angular deviations (\textless 1 mrad) in an efficient and reproducible manner that is at least three times faster than standard hand-tuning. Additionally, we present a Bayesian method for experimental optimization of the ion optics, and show that it validates the nominal theoretical ion-optical settings of the device, and improves the mass separation by 32\% for some beams.
Public Participation in the Construction of the Huai Nakhi Water Slowing Department, Si Or Subdistrict, Kumphawapi District
Creators: name: Boonpeng Sittivongsa
Publisher: name: DR.KET Institute of Academic Development and Promotion
Year: 2024
Subjects: Public Participation
Construction of the Water Softening Department
Huai Nakhi

description: Modern Academic Development and Promotion Journal, 2, 4, 1-16
Beyond long-term averages: making biological sense of a rapidly changing world
Creators: name: Helmuth, Brian
name: Russell, Bayden D
name: Connell, Sean D
name: Dong, Yunwei
name: Harley, Christopher David Grant
name: Lima, Fernando P
name: Sará, Gianluca
name: Williams, Gray A
name: Mieszkowska, Nova
Publisher: name: BioMed Central
Year: 2015

description: Biological responses to climate change are typically communicated in generalized terms such as poleward and altitudinal range shifts, but adaptation efforts relevant to management decisions often require forecasts that incorporate the interaction of multiple climatic and nonclimatic stressors at far smaller spatiotemporal scales. We argue that the desire for generalizations has, ironically, contributed to the frequent conflation of weather with climate, even within the scientific community. As a result, current predictions of ecological responses to climate change, and the design of experiments to understand underlying mechanisms, are too often based on broad-scale trends and averages that at a proximate level may have very little to do with the vulnerability of organisms and ecosystems. The creation of biologically relevant metrics of environmental change that incorporate the physical mechanisms by which climate trains patterns of weather, coupled with knowledge of how organisms and ecosystems respond to these changes, can offer insight into which aspects of climate change may be most important to monitor and predict. This approach also has the potential to enhance our ability to communicate impacts of climate change to nonscientists and especially to stakeholders attempting to enact climate change adaptation policies.
Measurements of Chromospheric Mg I Emission Lines of Zero-Age Main-Sequence Stars
Creators: name: Yamashita, Mai
name: Itoh, Yoichi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The chromosphere is the active atmosphere in which energetic eruption events, such as flares, occur. Chromospheric activity is driven by the magnetic field generated by stellar rotation and convection. The relationship between chromospheric activity and the Rossby number, the ratio of the rotational period to the convective turnover time, has been extensively examined for many types of stars, by using narrow chromospheric emission lines, such as the Ca II lines and the Mg II h and k lines. However, the stars with small Rossby numbers, i.e., stars with rapid rotations and/or long convective turnover times, show constant strengths of such lines against the Rossby number. In this study, we investigate the infrared Mg I emission lines at 8807 A of 47 zero-age main-sequence (ZAMS) stars in IC 2391 and IC 2602 using the archive data of the Anglo-Australian Telescope at the University College London Echelle Spectrograph. After subtracting the photospheric absorption component, the Mg I line is detected as an emission line for 45 ZAMS stars, whose equivalent widths are between 0.02 A and 0.52 A. A total of 42 ZAMS stars show the narrower Mg I emission lines instead of the Ca II infrared triplet emission lines, suggesting that they are formed at different depths. The ZAMS stars with smaller Rossby numbers show stronger Mg I emission lines. The Mg I emission line is not saturated even in "the saturated regime of the Ca II emission lines," i.e., Rossby number < 10^(-1.1). The Mg I emission line is considered to be a good indicator of chromospheric activity, particularly for active objects.
description: 22 pages, 6 figures, accepted for publication in PASJ
Momentum recoil in the relativistic two-body problem: higher-order tails
Creators: name: Bini, Donato
name: Geralico, Andrea
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the description of the relativistic two-body interaction, together with the effects of energy and angular momentum losses due to the emission of gravitational radiation, one has to take into account also the loss of linear momentum, which is responsible for the recoil of the center-of-mass of the system. We compute higher-order tail (i.e., tail-of-tail and tail-squared) contributions to the linear momentum flux for a nonspinning binary system either along hyperboliclike or ellipticlike orbits. The corresponding orbital averages are evaluated at their leading post-Newtonian approximation, using harmonic coordinates and working in the Fourier domain. The final expressions are given in a large-eccentricity (or large-angular momentum) expansion along hyperboliclike orbits and in a small-eccentricity expansion along ellipticlike orbits. We thus complete a previous analysis focusing on both energy and angular momentum losses [Phys. Rev. D \textbf{104}, no.10, 104020 (2021)], providing brick-type results which will be useful, e.g., in the high-accurate determination of the radiated impulses of the two bodies undergoing a scattering process.
description: 15 pages, revtex macros used; v2: Eq. (2.6) (and related) completed; minor text modifications
The left heart and exact hull of an additive regular category
Creators: name: Henrard, Ruben
name: Kvamme, Sondre
name: van Roosmalen, Adam-Christiaan
name: Wegner, Sven-Ake
Publisher: name: arXiv
Year: 2021
Subjects: subject: Category Theory (math.CT)
subject: Functional Analysis (math.FA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 18E20 (primary), 18E05, 18E08, 18E35, 18E40, 18G80, 46A13, 46M18 (secondary)

description: Quasi-abelian categories are abundant in functional analysis and representation theory. It is known that a quasi-abelian category $\mathcal{E}$ is a cotilting torsionfree class of an abelian category. In fact, this property characterizes quasi-abelian categories. This ambient abelian category is derived equivalent to the category $\mathcal{E}$, and can be constructed as the heart $\mathcal{LH}(\mathcal{E})$ of a $\operatorname{t}$-structure on the bounded derived category $\operatorname{D^b}(\mathcal{E})$ or as the localization of the category of monomorphisms in $\mathcal{E}.$
 However, there are natural examples of categories in functional analysis which are not quasi-abelian, but merely one-sided quasi-abelian or even weaker. Examples are the category of $\operatorname{LB}$-spaces or the category of complete Hausdorff locally convex spaces. In this paper, we consider additive regular categories as a generalization of quasi-abelian categories that covers the aforementioned examples. Additive regular categories can be characterized as those subcategories of abelian categories which are closed under subobjects.
 As for quasi-abelian categories, we show that such an ambient abelian category of an additive regular category $\mathcal{E}$ can be found as the heart of a $\operatorname{t}$-structure on the bounded derived category $\operatorname{D^b}(\mathcal{E})$, or as the localization of the category of monomorphisms of $\mathcal{E}$. In our proof of this last construction, we formulate and prove a version of Auslander's formula for additive regular categories.
 Whereas a quasi-abelian category is an exact category in a natural way, an additive regular category has a natural one-sided exact structure. Such a one-sided exact category can be 2-universally embedded into its exact hull. We show that the exact hull of an additive regular category is again an additive regular category.
The Two-Loop Massless Off-Shell QCD Operator Matrix Elements to Finite Terms
Creators: name: Blümlein, J.
name: Marquard, P.
name: Schneider, C.
name: Schönwald, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the unpolarized and polarized two--loop massless off--shell operator matrix elements in QCD to $O(\varepsilon)$ in the dimensional parameter in an automated way. Here we use the method of arbitrary high Mellin moments and difference ring theory, based on integration-by-parts relations. This method also constitutes one way to compute the QCD anomalous dimensions. The presented higher order contributions to these operator matrix elements occur as building blocks in the corresponding higher order calculations up to four--loop order. All contributing quantities can be expressed in terms of harmonic sums in Mellin--$N$ space or by harmonic polylogarithms in $z$--space. We also perform comparisons to the literature.
description: 101 pages Latex
First passage in the presence of stochastic resetting and a potential barrier
Creators: name: Ahmad, Saeed
name: Rijal, Krishna
name: Das, Dibyendu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Diffusion and first passage in the presence of stochastic resetting and potential bias have been of recent interest. We study a few models, systematically progressing in their complexity, to understand the usefulness of resetting. In the parameter space of the models, there are multiple continuous and discontinuous transitions where the advantage of resetting vanishes. We show these results analytically exactly for a tent-potential, and numerically accurately for a quartic-potential relevant to a magnetic system at low temperatures. We find that the spatial asymmetry of the potential across the barrier, and the number of absorbing boundaries, play a crucial role in determining the type of transition.
Aging and the intramyocardial inflammatory response
Creators: name: Walley, Keith R. (Keith Robert)
Publisher: name: BioMed Central
Year: 2016

description: The sepsis-induced intramyocardial inflammatory response results in decreased ventricular function and myocardial damage. Chemokines such as monocyte chemoattractant protein-1 causally contribute to retention of intramyocardial mononuclear leukocytes and subsequent ventricular dysfunction during endotoxemic shock in mice and, importantly, this effect is age dependent. It is therefore useful to consider where monocyte chemoattractant protein-1 fits in the complex pathway leading to ventricular dysfunction during sepsis, why this might be an age-dependent effect, and what this implies for care of older sepsis patients.
Properties of the wave breaking onset
Creators: name: Babanin, Alexander
name: Chalikov, D.
name: Young, I. R.
name: Savelyev, I.
Publisher: name: Swinburne
Year: 2024

description: The breaking of deep-water surface water waves represents one of the most interesting and challenging problems of fluid mechanics. Breaking is a strongly nonlinear shocklike intermittent random process, the distribution of which on the water surface is not continuous. The role breaking plays in maintaining the energy balance in continuous air-sea interaction field is, however, critical. Despite decades of research in the field, a basic physical understanding and mathematical description remain elusive. Results will be presented on predicting the wave breaking onset and a detailed investigation of the properties and the causes of breaking of two-dimensional waves in deep water. The progression of initially monochromatic steep waves to the point of breaking is first investigated by means of the fully nonlinear Chalikov-Sheinin model. Particular attention is paid to the evolution of nonlinear wave properties, such as steepness, skewness and asymmetry, in the physical space, and to their interplay leading to breaking onset. The addition of wind forcing can play multiple roles in changing the wave-breaking dependences. Instantaneously, wind has only a marginal affect on breaking onset, unless the wind forcing is very strong. Wind action is, however, important on longer scales in altering breaking statistics and breaking severity. These roles are investigated. The results are then verified and expanded in a laboratory experiment. The experiment demonstrated good qualitative agreement with the numerical simulations and consequently the breaking dependence was quantified. These experiments also revealed a number of new features of the nonlinear wave development near breaking, i.e. reduction of the wave period prior to breaking. The location of breaking onset, which occurs as a result of the natural evolution of nonlinear wave trains, can be controlled in such laboratory experiments. Therefore, the properties of the incipient breakers, as well as those of waves preceding and following the breaker, were measured and investigated in detail. In particular, it is demonstrated that the breaking will occur once the wave reaches the Stokes limiting steepness. Potential applications of the approach to field conditions are also discussed.
Combinatorics of the Tautological Lamination
Creators: name: Calegari, Danny
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 37F10, 68R15

description: The Tautological Lamination arises in holomorphic dynamics as a combinatorial model for the geometry of 1-dimensional slices of the Shift Locus. In each degree $q$ the tautological lamination defines an iterated sequence of partitions of $1$ (one for each integer $n$) into numbers of the form $2^m q^{-n}$. Denote by $N_q(n,m)$ the number of times $2^mq^{-n}$ arises in the $n$th partition. We prove a recursion formula for $N_q(n,0)$, and a gap theorem: $N_q(n,n)=1$ and $N_q(n,m)=0$ for $\lfloor n/2 \rfloor < m < n$.
description: 20 pages, 7 figures, 3 tables; updated to agree with published version
Heating of the solar chromosphere through current dissipation
Creators: name: Santos, J. M. da Silva
name: Danilovic, S.
name: Leenaarts, J.
name: Rodríguez, J. de la Cruz
name: Zhu, X.
name: White, S. M.
name: Vissers, G. J. M.
name: Rempel, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The solar chromosphere is heated to temperatures higher than predicted by radiative equilibrium. This excess heating is greater in active regions where the magnetic field is stronger. We aim to investigate the magnetic topology associated with an area of enhanced millimeter (mm) brightness temperatures in a solar active region mapped by the Atacama Large Millimeter/submillimeter Array (ALMA) using spectropolarimetric co-observations with the 1-m Swedish Solar Telescope (SST). We used Milne-Eddington inversions, nonlocal thermodynamic equilibrium (non-LTE) inversions, and a magnetohydrostatic extrapolation to obtain constraints on the three-dimensional stratification of temperature, magnetic field, and radiative energy losses. We compared the observations to a snapshot of a magnetohydrodynamics simulation and investigate the formation of the thermal continuum at 3 mm using contribution functions. We find enhanced heating rates in the upper chromosphere of up to $\sim 5\rm\,kW\,m^{-2}$, where small-scale emerging loops interact with the overlying magnetic canopy leading to current sheets as shown by the magnetic field extrapolation. Our estimates are about a factor of two higher than canonical values, but they are limited by the ALMA spatial resolution ($\sim 1.2^{\prime\prime}$). Band 3 brightness temperatures reach about $\sim10^{4}\,$K in the region, and the transverse magnetic field strength inferred from the non-LTE inversions is on the order of $\sim 500\,$G in the chromosphere. We are able to quantitatively reproduce many of the observed features, including the integrated radiative losses in our numerical simulation. We conclude that the heating is caused by dissipation in current sheets. However, the simulation shows a complex stratification in the flux emergence region where distinct layers may contribute significantly to the emission in the mm continuum.
description: 18 pages, 13 figures. Accepted for publication in A&A. Typos and bibtex corrected
DAÑO AMBIENTAL Y LOS PRINCIPIOS GENERALES DEL DERECHO DE  PRECAUCIÓN Y PREVENCIÓN.  REPARACIÓN.
Creators: name: Martín Andrés Frúgoli
Publisher: name: Zenodo
Year: 2011

description:  Sumario.     INTRODUCCIÓN. EL AMBIENTE Y EL DERECHO. 2.1 La cruda realidad ambiental y su evidente gravedad. 2.2. Daño Ambiental. 2.3. Derechos humanos. 2.4. Respuestas del derecho. _PRINCIPIOS GENERALES DEL DERECHO, CUESTIÓN PREVIA. PRINCIPIO PRECAUTORIO. 3.1. Concepto. 3.2. Diferencia con la Prevención.  3.3. Importancia. 3.4. Naturaleza jurídica. 3.5. Raigambre, ¿de dónde se desprende?. 3.6. Destinatarios. 3.7. Elementos. 3.8. Algunas críticas, respuestas y ventajas del Principio Precautorio. 3.9. Aceptación de riesgos y principio de precaución. Remisión. PRINCIPIO DE PREVENCIÓN. 4.1. Concepto. 4.2. Origen. 4.3. Binomio ambiental: conocimiento-prevención. 4.4. Destinatarios. 4.5. Naturaleza jurídica.  LÍMITES A LOS PRINCIPIOS PRECAUTORIO Y PREVENCIONAL (ARTÍCULOS 1071 Y 902 COMO PAUTAS INTERPRETATIVAS). RESPONSABILIDAD CIVIL Y PRESUPUESTOS. REPARACIÓN DEL DAÑO AMBIENTAL. Breve análisis y propuestas. CONCLUSIONES.
Cohen, Y. (2019), Prostitution et traite des femmes. Une cause féministe en France et au Canada au tournant du XXe siècle, Montréal, Del Busso éditions, pp. 272
Creators: name: Lucenti, Maria
Publisher: name: AG About Gender - Rivista internazionale di studi di genere
Year: 2020

description: AG About Gender - Rivista internazionale di studi di genere, V. 9, N. 17 (2020): Cibo e genere. Rappresentazioni, pratiche, gerarchie
Farris, S.R. (2019), Femonazionalismo: il razzismo nel nome delle donne, Roma, Alegre, pp. 303
Creators: name: Mangiarotti, Emanuela
Publisher: name: AG About Gender - Rivista internazionale di studi di genere
Year: 2020

description: AG About Gender - Rivista internazionale di studi di genere, V. 9, N. 17 (2020): Cibo e genere. Rappresentazioni, pratiche, gerarchie
Borghi, R. (2020), Decolonialità e privilegio. Pratiche femministe e critica al sistema-mondo, Milano, Meltemi, pp. 263
Creators: name: Panighel, Marta
Publisher: name: AG About Gender - Rivista internazionale di studi di genere
Year: 2020

description: AG About Gender - Rivista internazionale di studi di genere, V. 9, N. 17 (2020): Cibo e genere. Rappresentazioni, pratiche, gerarchie
Curcio, A. (a cura di) (2019), Introduzione ai femminismi, Roma, DeriveApprodi, pp. 110
Creators: name: Bellè, Elisa
Publisher: name: AG About Gender - Rivista internazionale di studi di genere
Year: 2020

description: AG About Gender - Rivista internazionale di studi di genere, V. 9, N. 17 (2020): Cibo e genere. Rappresentazioni, pratiche, gerarchie
Berry phase in the rigid rotor: the emergent physics of odd antiferromagnets
Creators: name: Khatua, Subhankar
name: Ganesh, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The rigid rotor is a classic problem in quantum mechanics, describing the dynamics of a rigid body with its centre of mass held fixed. The configuration space of this problem is $SO(3)$, the space of all rotations in three dimensions. This is a topological space with two types of closed loops: trivial loops that can be adiabatically shrunk to a point and non-trivial loops that cannot. In the traditional formulation of the problem, stationary states are periodic over both types of closed loops. However, periodicity conditions may change if Berry phases are introduced. We argue that time-reversal-symmetry allows for only one new possibility -- a Berry phase of $π$ attached to all non-trivial loops. We derive the corresponding stationary states by exploiting the connection between $SO(3)$ and $SU(2)$ spaces. The solutions are anti-periodic over any non-trivial loop, i.e., stationary states reverse sign under a $2π$ rotation about any axis. Remarkably, this framework is realized in the low-energy physics of certain quantum magnets. The magnets must satisfy the following conditions: (a) the classical ground states are unpolarized, carrying no net magnetization, (b) the set of classical ground states is indexed by $SO(3)$, and (c) the product $N\times S$ is a half-integer, where $N$ is the number of spins and $S$ is the spin quantum number. We demonstrate this result in a family of Heisenberg antiferromagnets defined on polygons with an odd number of vertices. At each vertex, we have a spin-$S$ moment that is coupled to its nearest neighbours. In the classical limit, these magnets have coplanar ground states. Their quantum spectra, at low energies, correspond to `spherical top' and `symmetric top' rigid rotors. For integer values of $S$, we recover traditional rigid rotor spectra. With half-integer-$S$, we obtain rotor spectra with a Berry phase of $π$.
description: 14 pages, 12 figures
$Ξ$ hypernuclei $^{15}_Ξ$C, $^{12}_Ξ$Be and $ΞN$ two-body interaction
Creators: name: Tanimura, Yusuke
name: Sagawa, Hiroyuki
name: Sun, Tingting
name: Hiyama, Emiko
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the energy spectra of $Ξ$ hypernuclei $^{15}_Ξ$C and $^{12}_Ξ$Be with a relativistic mean field (RMF) model with meson exchange $ΞN$ interactions. The RMF parameters are optimized to reproduce the average energy of KINKA and IRRAWADDY events for the ground state and also the average energy of KISO and IBUKI events for the excited state in $^{15}_Ξ$C. The potential depth of average $ΞN$ mean field potential is found to be about $-12$ MeV in the nuclear matter limit. We further introduce the two-body $s$- and $p$-wave interactions between valence nucleons and $Ξ$ particle. We found that the $s$-wave interaction deduced from the HAL LQCD results is rather weak to obtain the energy difference between IRRAWADDY and KINKA events. The $p$-wave interaction is added and fitted to reproduce the energy difference. The resulting interaction together with the $s$-wave one gives a reasonable energy simultanously for the IBUKI event as an excited $Ξ_p$ state. The model is further applied to predict the energy spectrum of $^{12}_Ξ$Be.
description: 7 pages, 4 figures
(Extra)ordinary equivalences with the ascending/descending sequence principle
Creators: name: Fiori-Carones, Marta
name: Marcone, Alberto
name: Shafer, Paul
name: Soldà, Giovanni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03B30 (Primary) 03F35, 05D10, 06A06 (Secondary)

description: We analyze the axiomatic strength of the following theorem due to Rival and Sands in the style of reverse mathematics. "Every infinite partial order $P$ of finite width contains an infinite chain $C$ such that every element of $P$ is either comparable with no element of $C$ or with infinitely many elements of $C$." Our main results are the following. The Rival-Sands theorem for infinite partial orders of arbitrary finite width is equivalent to $\mathsf{I}Σ^0_2 + \mathsf{ADS}$ over $\mathsf{RCA}_0$. For each fixed $k \geq 3$, the Rival-Sands theorem for infinite partial orders of width $\leq\! k$ is equivalent to $\mathsf{ADS}$ over $\mathsf{RCA}_0$. The Rival-Sands theorem for infinite partial orders that are decomposable into the union of two chains is equivalent to $\mathsf{SADS}$ over $\mathsf{RCA}_0$. Here $\mathsf{RCA}_0$ denotes the recursive comprehension axiomatic system, $\mathsf{I}Σ^0_2$ denotes the $Σ^0_2$ induction scheme, $\mathsf{ADS}$ denotes the ascending/descending sequence principle, and $\mathsf{SADS}$ denotes the stable ascending/descending sequence principle. To our knowledge, these versions of the Rival-Sands theorem for partial orders are the first examples of theorems from the general mathematics literature whose strength is exactly characterized by $\mathsf{I}Σ^0_2 + \mathsf{ADS}$, by $\mathsf{ADS}$, and by $\mathsf{SADS}$. Furthermore, we give a new purely combinatorial result by extending the Rival-Sands theorem to infinite partial orders that do not have infinite antichains, and we show that this extension is equivalent to arithmetical comprehension over $\mathsf{RCA}_0$.
Erratum to: Albumin administration in the acutely ill: what is new and where next?
Creators: name: Vincent, Jean-Louis
name: Russell, James A
name: Jacob, Matthias
name: Martin, Greg
name: Guidet, Bertrand
name: Wernerman, Jan
name: Ferrer, Ricard
name: McCluskey, Stuart A
name: Gattinoni, Luciano
Publisher: name: BioMed Central
Year: 2016

Abstract
title: Soutien financier à la traduction 2015
Creators: name: LabexMed
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2017

description: Soutien financier à la traduction de la production scientifique de LabexMed en langue étrangère 2015
description: Relation: https://labexmed.hypotheses.org/1168
title: Application of the background-oriented schlieren technique to visualize indoor airflows
Creators: name: Benetas, Lia
name: Hartmann, Maria
name: Voelker, Conrad
Publisher: name: Hannover : Technische Informationsbibliothek
Year: 2024
Subjects: subject: flow visualization
subject: background-oriented schlieren
subject: sensitivity study
subject: singers
subject: wind instruments
subject: 530
subject: 620

description: This study focuses on further developments and the application of the background-oriented schlieren (BOS) technique to visualize indoor airflows. It is divided into two parts. First, the BOS setup and its specifications are introduced. Since indoor airflows are usually large-scaled and defined by very small density gradients and small velocities, the setup needs to have a high sensitivity, high resolution, and a large field of view. The setup consists of a high resolution (8688  5792 pixels) DSLR camera Canon EOS 5DS R, a background structure of random black pixels (edge length 0.22 mm, density 25 %) on white ground, and two flashlights ELINCHROM BRX 500 (each 500 Ws max.) illuminating the background. For image analysis, the cross-correlation-based program PIVview2C is used. Additionally, the sensitivity and possibilities of the developed setup are presented. Using the settings described, it is possible to visualize temperature gradients of ΔΘ<0.3 K and virtual image shifting of Δy<0.1 pixels. In the second part, the developed BOS setup was used to visualize the spread of breathing air two-dimensionally when playing wind instruments and singing. Here, various brass and woodwind instruments, as well as the human voice, were studied to assess the spreading range of the breathing air when playing different notes, scales, or musical pieces at different pitches, with different dynamics and articulations. Additionally, velocities of the escaping airflows were measured to assess their extent and to validate the BOS evaluations.
Fabry-Pérot interference in 2D low-density Rashba gas
Creators: name: Li, Yuan-Qiao
name: Chen, Xi-Rong
name: Luo, Wei
name: Zhou, Tao
name: Chen, Wei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In mesoscopic electronic systems, the Fabry-Pérot (FP) oscillation is observed in various 1D devices. As for higher dimensions, numerous transverse channels usually lead to dephasing that quenches the overall oscillation of the conductance. Up to now, the FP oscillation in 2D electronic systems is only reported in graphene-based devices, and very recently, the \emph{pn} junctions of inverted InAs/GaSb double quantum well [Phys. Rev. X 10, 031007 (2020)]. In the latter, the band shape of a sombrero hat plays an essential role, which introduces a novel mechanism of electron-hole hybridization for the 2D FP oscillation. In this work, we propose that such a scenario can be generalized to the 2D planar junction composed of low-density Rashba gas, where the band bottom possesses a sombrero hat shape as well. We show that the backscattering between the outer and inner Fermi circles dominates the FP interference and significantly suppresses the dephasing effect between different transverse channels, which leads to a visible oscillation of the tunneling conductance. Specially, the visibility of the oscillating pattern can be enhanced by applying interface barriers, in contrast to that in the InAs/GaSb double quantum well. Our results provide a promising way for the implementation of the FP oscillation in the 2D electron gas.
description: 6 pages and 4 figures
A covariant formulation of relativistic mechanics
Creators: name: Correia, Miguel
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Accretion disks surrounding compact objects, and other environmental factors, deviate satellites from geodetic motion. Unfortunately, setting up the equations of motion for such relativistic trajectories is not as simple as in Newtonian mechanics. The principle of general (or Lorentz) covariance and the mass-shell constraint make it difficult to parametrize physically adequate 4-forces. Here, we propose a solution to this old problem. We apply our framework to several conservative and dissipative forces. In particular, we propose covariant formulations for Hooke's law and the constant force, and compute the drag due to gravitational and hard-sphere collisions in dust, gas and radiation media. We recover and covariantly extend known forces such as Epstein drag, Chandrasekhar's dynamical friction and Poynting-Robertson drag. Variable-mass effects are also considered, namely Hoyle-Lyttleton accretion and the variable-mass rocket. We conclude with two applications: 1. The free-falling spring. We find that Hooke's law corrects the deviation equation by an effective Anti-de Sitter tidal force; 2. Black hole infall with drag. We numerically compute some trajectories on a Schwarzschild background supporting a dust-like accretion disk.
description: 21 pages + appendices; v2: revised introduction, added conclusion. Accepted in PRD
Centrifugal breakout reconnection as the electron acceleration mechanism powering the radio magnetospheres of early-type stars
Creators: name: Owocki, Stanley P
name: Shultz, Matt E.
name: ud-Doula, Asif
name: Chandra, Poonam
name: Das, Barnali
name: Leto, Paulo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Magnetic B-stars often exhibit circularly polarized radio emission thought to arise from gyrosynchrotron emission by energetic electrons trapped in the circumstellar magnetosphere. Recent empirical analyses show that the onset and strength of the observed radio emission scale with both the magnetic field strength and the stellar rotation rate. This challenges the existing paradigm that the energetic electrons are accelerated in the current sheet between opposite-polarity field lines in the outer regions of magnetised stellar winds, which includes no role for stellar rotation. Building on recent success in explaining a similar rotation-field dependence of H$α$ line emission in terms of a model in which magnetospheric density is regulated by centrifugal breakout (CBO), we examine here the potential role of the associated CBO-driven magnetic reconnection in accelerating the electrons that emit the observed gyrosynchrotron radio. We show in particular that the theoretical scalings for energy production by CBO reconnection match well the empirical trends for observed radio luminosity, with a suitably small, nearly constant conversion efficiency $ε\approx 10^{-8}$. We summarize the distinct advantages of our CBO scalings over previous associations with an electromotive force, and discuss the potential implications of CBO processes for X-rays and other observed characteristics of rotating magnetic B-stars with centrifugal magnetospheres.
description: 11 pages, 6 pages, accepted for publication in Monthly Notices of the Royal Astronomical Society
Flux ramp modulation based hybrid microwave SQUID multiplexer
Creators: name: Schuster, Constantin
name: Wegner, Mathias
name: Enss, Christian
name: Kempf, Sebastian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a hybrid microwave SQUID multiplexer that combines two frequency-division multiplexing techniques to allow multiplexing a given number of cryogenic detectors with only a fraction of frequency encoding resonators. Similar to conventional microwave SQUID multiplexing, our multiplexer relies on inductively coupling non-hysteretic, unshunted rf-SQUIDs to superconducting microwave resonators as well as applying flux ramp modulation for output signal linearization. However, instead of utilizing one resonator per SQUID, we couple multiple SQUIDs to a common readout resonator and encode the SQUID input signals in sidebands of the microwave carrier by varying the flux ramp modulation frequency for each SQUID. We prove the suitability of our approach using a prototype device and argue by means of fundamental information theory that our approach is particularly suited for reading out large cryogenic bolometer arrays.
description: The following article has been submitted to Applied Physics Letters
The activity of the post-nova V1363 Cyg on long timescales
Creators: name: Simon, Vojtech
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: V1363 Cyg is a cataclysmic variable (CV) and a post-nova. Our analysis of its long-term optical activity used the archival data from the AAVSO database and literature. We showed that the accretion disk of V1363 Cyg is exposed to the thermal-viscous instability (TVI) for at least part of the time. The time fraction spent in the high state or the outbursts dramatically changed on the timescale of decades. Highly variable brightness of V1363 Cyg displayed several episodes of a strong brightening (bumps in the light curve) from a cool disk in the TVI zone. In the interpretation, their vastly discrepant decay rates show that only some of these bumps can be attributed to the dwarf nova outbursts without strong irradiation of the disk by the hot white dwarf. The Bailey relation of the decay rate, if ascribed to a DN outburst of V1363 Cyg, speaks in favor of its orbital period $P_{\rm orb}$ very long for a CV, about 20-40 hr. A dominant cycle length of about 435 d was present in the brightness changes all the time, even when the disk was well inside the TVI zone. We interpret it as modulation of the companion's mass outflow by differential rotation of the active region(s).
description: 9 pages, 6 figures
A Performance Investigation of Receive Beamforming Schemes in Specular Tissue Characterization
Creators: name: Malamal, Gayathri
name: Panicker, Mahesh Raveendranatha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Medical Physics (physics.med-ph)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: This work presents a comparison of the delay and sum (DAS), filtered delay multiply and sum (DMAS), minimum variance (MV) and specular receive beamforming schemes in the context of ultrasound imaging of specular reflectors. The main contributions of the study are, 1) a performance comparison of the four receive beamforming schemes through experimental studies for varying angulations of planar reflectors and for reflectors located at varying depths in the medium and, 2)an investigation on the influence of the sub-array length in MV beamforming on the imaging of specular structures. The qualitative conclusions are quantitatively validated in terms of contrast and generalized contrast-to-noise ratios. The study examines the benefits and drawbacks of each receive beamforming technique and highlights the significance of application-tailored beamforming schemes for imaging specular structures.
description: Copyright@2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
Faecal sludge treatment using lime stabilisation in Cox´s Bazar, Bangladesh
Creators: name: Md. Ziaul Haque
name: Bicknell, Owen
name: Galpin, Richard
name: Pop-Stefanija, Biserka
Publisher: name: F1000 Research Limited
Year: 2020

description: Faecal sludge treatment plant by lime stabilisation in Cox´s Bazar, Bangladesh presented at MSF Scientific Days International (London) Innovation Day, May 14, 2020 by Md. Ziaul Haque
Photoinduced 120-degree spin order in the Kondo-lattice model on a triangular lattice
Creators: name: Inoue, Takashi
name: Mochizuki, Masahito
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically predict the emergence of 120-degree spin order as a nonequilibrium steady state in the photodriven Kondo-lattice model on a triangular lattice. In the system away from the half filling with ferromagnetic ground state, the photoexcitation of conduction electrons and the photoinduced renormalization of bandwidth cause reconstruction of band structure and subsequent redistribution of the electrons through relaxations, which result in an electronic structure similar to that in the half-filled system at equilibrium, where the 120-degree spin order is stabilized. In this photoinduced 120-degree spin ordered phase, domains of different spin-ordered planes are formed, and vortices of spin chirality vectors called $Z_2$ vortices appear at points where multiple domains meet. We also discuss favorable conditions and experimental feasibility to observe the predicted photoinduced magnetic phase transition by investigating dependencies on the light parameters (amplitude, frequency, and polarization), the electron filling, the strength of Kondo coupling, and the effects of antiferromagnetic coupling among the localized spins. Photoinduced magnetic structures proposed so far have been limited to simple collinear (anti)ferromagnetic orders or local magnetic defects in magnets. The present work paves a way to optical creation of complex noncollinear magnetisms as global nonequilibrium steady phase in photodriven systems.
description: 17 pages, 11 figures, revised version, accepted for publication in Physical Review B