cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Supporting Information: Can Bayesian phylogeography reconstruct migrations and expansions in linguistic evolution?
Creators: name: Neureiter, Nico
name: Ranacher, Peter
name: Gijn, Rik Van
name: Bickel, Balthasar
name: Weibel, Robert
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 80110 Simulation and Modelling
subject: FOS: Computer and information sciences

description: This document provides supporting information for the main article. The first sections provide additional details on the simulations (S1, S2), phylogeographic reconstruction (S3) and evaluation (S4) in the main simulation study. Further we include results of additional experiments (S5), a sensitivity analysis (S6), a detailed explanation of the descriptive statistics used in the discussion of the main paper (S7) and a figure, illustrating the effect of missing first clades on the reconstruction (S8).
Full Counting Statistics and Field Theory
Creators: name: Nazarov, Yuli V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We review the relations between the full counting statistics and the field theory of electric circuits. We demonstrate that for large conductances the counting statistics is determined by non-trivial saddle-point of the field. Coulomb effects in this limit are presented as quantum corrections that can stongly renormalize the action at low energies.
description: microreview, 15 pages, accepted to Ann. Phys. (Leipzig)
title: Estimates Of Discards From Two Deepwater Fleets In The Rockall Trough
Creators: name: Blasdale, T.
name: Newton, A. W.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Since the late 1980s a fishery has developed in deep. water west of the British Isles targeting a variety of species, many of which were formerly unknown to European Markets. At presentthere are two .distinct fleets operating in deep water and landing into Scotland; A fleet of five French vessels Of 45 to 50 m total lengih capable of fishing to depths of over 1,500 m and a second of Scottish trawlers of between 24 and 30 m mainly targeting gadoids and Lophius spp. on the continental shelf but occasionally fishing down to about 1,000 m depth. Both fleets divide their fishing effort between the deep water fishery and traditional fisheries on the continental shelf. Discards from both fleets were sampled at sea between 1996 and 1998 and marked differences were observed between the two fleets in terms of the species composition of their .discards. It is thought that this can be accounted for to a large extent by differeinces in the depth range fished
Nonlinear Hall Effect in Antiferromagnetic Half-Heusler Materials
Creators: name: Chen, Cheng
name: Wang, Huaiqiang
name: Yang, Zhilong
name: Zhang, Haijun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: It has recently been demonstrated that various topological states, including Dirac, Weyl, nodal-line, and triple-point semimetal phases, can emerge in antiferromagnetic (AFM) half-Heusler compounds. However, how to determine the AFM structure and to distinguish different topological phases from transport behaviors remains unknown. We show that, due to the presence of combined time-reversal and fractional translation symmetry, the recently proposed second-order nonlinear Hall effect can be used to characterize different topological phases with various AFM configurations. Guided by the symmetry analysis, we obtain the expressions of the Berry curvature dipole for different AFM configurations. Based on the effective model, we explicitly calculate the Berry curvature dipole, which is found to be vanishingly small for the triple-point semimetal phase, and large in the Weyl semimetal phase. Our results not only put forward an effective method for the identification of magnetic orders and topological phases in AFM half-Heusler materials, but also suggest these materials as a versatile platform for engineering the non-linear Hall effect.
title: Alfonsino (Beryx Splendens) Biology And Fishery On The Seamounts In The Open North Atlantic
Creators: name: Vinnichenko, V.I.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Aggregations of Alfonsino on the seamounts in the open North Atlantic were discovered for the first time about two decades ago. In total approximately 25 thou.t of Alfonsino were caught since that time, and virtually all catches have been taken onboard vessels of the USSR/Russia. Alfonsino was represented in trawl catches by specimens ranging from· 15 to 59cm fork length and weight ranging from 0.1 to 3.6 kg. Spawning of Alfonsino is intermittent and is observed during summer. Alfonsino were reported to feed on rnesopelagic fish species, crustaceans and squids. Behavior and distribution of Alfonsino were noted to show considerable variability. The main factor which appeared to determine a pattern of Alfonsino I vertical migration􀈵 was the vertical shifting of its food organisms. The latter, in tum, were closely related to variations in light pe·netration into the sea and hydro-meteorological conditions. Horizontal migrations of Alfonsino have been observed to be limited by the area of seamounts. Trawl fishery of Alfortsino is rather difficult because of the ragged relief of the seamounts, hard bottom and variability of fish aggregations. Biomass of Alfonsino appears to be comparatively low, in the period 1976-1995 it constituted about 50-80 thou.t. Heavy fishery in the recent years had a negative impact on Alfonsino stocks. Oncondition fishery ban is observed, restoration of the stocks shall be expected.no sooner than in 4-5 years.
Borexino results on neutrinos from the Sun and Earth
Creators: name: Kumaran, Sindhujha
name: Ludhova, Livia
name: Penek, Ömer
name: Settanta, Giulio
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Borexino is a 280-ton liquid scintillator detector located at the Laboratori Nazionali del Gran Sasso in Italy. Since the start of its data taking in May 2007, it has provided several measurements of low-energy neutrinos from various sources. At the base of its success, lie unprecedented levels of radio-purity and extensive thermal stabilisation, both resulting from a years-long effort of the collaboration. Solar neutrinos, emitted in the hydrogen-to-helium fusion in the solar core, are important for the understanding of our star, as well as neutrino properties. Borexino is the only experiment that has performed a complete spectroscopy of the \emph{pp} chain solar neutrinos (with the exception of the \emph{hep} neutrinos contributing to the total flux at $10^{-5}$ level), through the detection of \emph{pp}, $^7$Be, \emph{pep}, and $^8$B solar neutrinos and has experimentally confirmed the existence of the CNO fusion cycle in the Sun. Borexino has also detected geoneutrinos, antineutrinos from the decays of long-lived radioactive elements inside the Earth, that can be exploited as a new and unique tool to study our planet. This paper reviews the most recent Borexino results on solar and geoneutrinos, from highlighting the key elements of the analyses up to the discussion and interpretation of the results for neutrino, solar, and geophysics.
description: Review article, 56 pages, 19 Figures, 9 Tables
ИЧКИ ИШЛАР ОРГАНЛАРИНИ ТАШКИЛИЙ БЎЛИНМАЛАР ФАОЛИЯТИНИ ТАКОМИЛЛАШТИРИШ
Creators: name: Саидов, Жасурбек
Publisher: name: Zenodo
Year: 2023

description: Мазкур мақолада ички ишлар органларида Ташкилий бўлинмалар фаолиятини такомиллаштириш зарурати миллий тажриба ҳамда Республиканинг ҳудудлари, пойтахт Тошкент шаҳри ҳамда бевосита Ички ишлар вазирлигидаги бевосита амалий фаолият асосида ўрганилди. Шунингдек, ички ишлар органларининг хизмат фаолиятини ташкиллаштириш, назорат қилиш ҳамда тўғри йўналтиришда Ташкилий бўлинмаларнинг роли, бу борадаги айрим назарий ва амалий муаммолар ёритилган бўлиб, шундан келиб чиқиб, Ўзбекистон Республикаси Президентининг қарорига ўзгартириш киритиш ва ёки янгидан қарор лойиҳаси ишлаб чиқиш бўйича таклиф ва тавсиялар ишлаб чиқилган.
title: Are Deepwater Fisheries Sustainable? - The Example Of Orange Roughy In New Zealand
Creators: name: Clark, Malcolm
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.The deepsea environment is generally regarded being one of low energy and productivity. Species exploited at depths of over 800 m like orange roughy (Hoplostethus atlanticus), oreos (e.g. Allocyttus niger, Pseudocyttus maculatus), and macrourid rattails (e.g. Coryphaenoides rupestrus, Macrourus berg/ax) have slow growth rates and high longevity compared to traditional commercial species from the continental shelf. They have low levels of sustainable yields, are vulnerable to overfishing, and have slow recovery rates. Yet, they are often high­value species, and this has maintained interest in developing new fisheries for deepwater species.
Cusp anomalous dimension in maximally supersymmetric Yang-Mills theory at strong coupling
Creators: name: Basso, B.
name: Korchemsky, G. P.
name: Kotanski, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct an exact analytical solution to the integral equation which is believed to describe logarithmic growth of the anomalous dimensions of high spin operators in planar N=4 super Yang-Mills theory and use it to determine the strong coupling expansion of the cusp anomalous dimension.
description: 5 pages. v3: minor corrections, references and important note added
Comment on "Regularizing capacity of metabolic networks"
Creators: name: Holme, Petter
name: Huss, Mikael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: In a recent paper, Marr, Muller-Linow and Hutt [Phys. Rev. E 75, 041917 (2007)] investigate an artificial dynamic system on metabolic networks. They find a less complex time evolution of this dynamic system in real networks, compared to networks of reference models. The authors argue that this suggests that metabolic network structure is a major factor behind the stability of biochemical steady states. We reanalyze the same kind of data using a dynamic system modeling actual reaction kinetics. The conclusions about stability, from our analysis, are inconsistent with those of Marr et al. We argue that this issue calls for a more detailed type of modeling.
Supporting Information: Can Bayesian phylogeography reconstruct migrations and expansions in linguistic evolution?
Creators: name: Neureiter, Nico
name: Ranacher, Peter
name: Gijn, Rik Van
name: Bickel, Balthasar
name: Weibel, Robert
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 80110 Simulation and Modelling
subject: FOS: Computer and information sciences

description: This document provides supporting information for the main article. The first sections provide additional details on the simulations (S1, S2), phylogeographic reconstruction (S3) and evaluation (S4) in the main simulation study. Further we include results of additional experiments (S5), a sensitivity analysis (S6), a detailed explanation of the descriptive statistics used in the discussion of the main paper (S7) and a figure, illustrating the effect of missing first clades on the reconstruction (S8).
A measurement of the analysing power of the pn --> pp(¹⁰)⁻ reaction
Creators: name: Ponting, Chris
Publisher: name: University of British Columbia
Year: 2010

description: A measurement of the analysing power of the pn → pp(¹S₀)π⁻ reaction, at an incident proton energy of 400 MeV, has been conducted at TRIUMF for pion centre-of-mass angles 56° < θ[sup * sub π]< 86°. The detection of pions, using a pion magnetic spectrometer, and the detection of the two protons, using arrays of Nal bars and thin plastic scintillators, are discussed with respect to the maximisation of an event yield where the two protons are in a relative ¹S₀ angular momentum state. The off-line event definition and the tests employed in the examination of the event set for background and accidental events are also presented in conjunction with the methods employed in the reduction of P-wave contamination. The predictions of a Monte Carlo simulation of this reaction for both S- and P-wave events are compared to the experimental quantities to discover the ratio of the yields for the two partial-waves. A partial-wave analysis has determined the reaction amplitude set for this reaction to a two-fold ambiguity, the results of this experiment show that the analysing power varies dramatically from approximately -0.85 at θ[sup * sub π]≈ 63° to +0.64 at θ[sup* sub π]≈ 83°. This variation is dissimilar to the form of the analysing power for one solution set and is similar to that for the other.
title: On Conditions Of Formation Of Greenland Halibut (Reinhardtius Hippoglossoides) Concentrations In The Open Northwest Atlantic
Creators: name: Vinnichenko, V.I.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.This paper presents results of deep sea fisheries investigations carried out during 60-S0s onboard the former Soviet Union vessels in the areas of the Flemish Cap Bank and the Grand Newfoundland Bank. The abundance variation trend in Greenland halibut catches is considered. Information on environmental changes in the Northwest Atlantic during the last three decades is given. Data from deep sea surveys in Canadian waters are reported. Reasons for formation of commercial aggregations outside the 200-mile Canadian zone as well as for decline in halibut biomass in traditional fishing areas are investigated. Prospects of halibut fisheries in the open Northwest Atlantic are analysed.
المعرفة المعلوماتية
Creators: name: Azzam, Faten
Publisher: name: Manara - Qatar Research Repository
Year: 2025
Subjects: classificationCode: 39
subject: Education
classificationCode: 3903
subject: Education systems
classificationCode: 46
subject: Information and computing sciences
classificationCode: 4610
subject: Library and information studies
classificationCode: 47
subject: Language, communication and culture
classificationCode: 4703
subject: Language studies
classificationCode: 52
subject: Psychology
subject: FOS: Psychology
classificationCode: 5201
subject: Applied and developmental psychology

description: يهدف هذا العرض إلى تسليط الضوء على دور أمين المكتبة المدرسية في مساعدة الطلاب على استخدام المعلومات بشكل فعال. يتم استعراض كيفية توجيه الطلاب في البحث عن المعلومات واختيار المصادر المناسبة لتعزيز تعلمهم. كما يركز العرض على دور أمين المكتبة في تعزيز مهارات الطلاب المعلوماتية، من خلال توفير بيئة غنية بالمصادر التي تدعم قدراتهم البحثية والأدبية.معلومات أخرى
رخصة: https://creativecommons.org/licenses/by-nc-nd/4.0/
معلومات الفعالية: المهارات المعلوماتية للمعلمين ومنسقي مكتبات الأطفال في المدارس الابتدائية
Influence of magnetic fields on ultrafast laser-induced switching dynamics in Co/Gd bilayers
Creators: name: Peeters, M. J. G.
name: van Ballegooie, Y. M.
name: Koopmans, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently it has been shown that not only GdFeCo alloys exhibit single-pulse helicity-independent all-optical switching (HI-AOS), but that this effect is also seen in Co/Gd bilayers. However, there have been no reports on the explicit time dynamics of the switching process in these bilayers as of yet. Furthermore, time-resolved measurements of switching of other materials are typically done with a constant applied field to reset the magnetization between consecutive pulses and thus ensure repeatable behavior. In this paper we experimentally resolve the explicit dynamics of the switching process in Co/Gd, and the influence of applied magnetic fields on the switching process. We observe that after a switch within several picoseconds, the magnetization switches back at a timescale of hundreds of picoseconds. This backswitch includes a strong dependence on the magnetic field strength even at sub-tesla fields, significantly smaller than the exchange fields that govern the switching dynamics. This surprising behaviour is explained by a combination of longitudinal switching (on a picosecond timescale), precessional switching (on a nanosecond timescale) and domain-wall motion (on a timescale of 10 ns and beyond). We discuss these different switching regimes and their relative importance using simple model calculations.
Electron heating in metallic resistors at sub-Kelvin temperature
Creators: name: Huard, B.
name: Pothier, H.
name: Esteve, D.
name: Nagaev, K. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the presence of Joule heating, the electronic temperature in a metallic resistor placed at sub-Kelvin temperatures can significantly exceed the phonon temperature. Electron cooling proceeds mainly through two processes: electronic diffusion to and from the connecting wires and electron-phonon coupling. The goal of this paper is to present a general solution of the problem, in a form that can easily be used in practical situations. As an application, we compute two quantities that depend on the electronic temperature profile: the second and the third cumulant of the current noise at zero frequency, as a function of the voltage across the resistor. We also consider time dependent heating, an issue relevant for experiments in which current pulses are used, for instance in time-resolved calorimetry experiments.
PREPRINT: Comparison of deep learning and hand crafted features for mining simulation data
Creators: name: Georgiou, Theodoros
name: Schmitt, Sebastian
name: Bäck, Thomas
name: Pu, Nan
name: Chen, Wei
name: Lew, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Computational Fluid Dynamics (CFD) simulations are a very important tool for many industrial applications, such as aerodynamic optimization of engineering designs like cars shapes, airplanes parts etc. The output of such simulations, in particular the calculated flow fields, are usually very complex and hard to interpret for realistic three-dimensional real-world applications, especially if time-dependent simulations are investigated. Automated data analysis methods are warranted but a non-trivial obstacle is given by the very large dimensionality of the data. A flow field typically consists of six measurement values for each point of the computational grid in 3D space and time (velocity vector values, turbulent kinetic energy, pressure and viscosity). In this paper we address the task of extracting meaningful results in an automated manner from such high dimensional data sets. We propose deep learning methods which are capable of processing such data and which can be trained to solve relevant tasks on simulation data, i.e. predicting drag and lift forces applied on an airfoil. We also propose an adaptation of the classical hand crafted features known from computer vision to address the same problem and compare a large variety of descriptors and detectors. Finally, we compile a large dataset of 2D simulations of the flow field around airfoils which contains 16000 flow fields with which we tested and compared approaches. Our results show that the deep learning-based methods, as well as hand crafted feature based approaches, are well-capable to accurately describe the content of the CFD simulation output on the proposed dataset.
title: Deep-Water Fish And Fisheries In The Northeastern Atlantic And Mediterranean: An Overview Of The Ec Fair Deep Fisheries Project
Creators: name: Gordon, John D.M.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Some deep-water fisheries such as the longline fishery for Aphanopus carbo (black scabbardfish) off Madeira: and the semi-pelagic trawl fisheries for Micromesistius poutassou (blue whiting) and Argentina situs (argentine) of the Rockall Trough are well established. In the late 1980s new deep-water bottom trawl fisheries for species such as Coryphaenoides rupestris (round.nose grenadier) and Hoplostethus atlanticus{orahge roughy)began to develop. In some ·instances the increase in the landings of these and other 'new' species represents the development of markets for the bycatch of existingdeep-:water fisheries, such as for Malva dyp1erygia (blue ling) in the Atlantic and the red shrimps Arisfe:us' aniennatus and Aristaeomorpha foliacea in the Mediterranean. In: an effort to learn more about these new fish and· their fisheries, the European Commission suppOrted'workshops in 1993 and 1994 and ICES' set up the Study Group on the Biology and Assessmen:t·ofDeep-Sea Fisheries Resources in 1994. It was against this background that the proposal for an EC FAIR Deep Fisheries Project was' developed. The project, whose full title is Developing deep-water fisheries: data for their -assessment and for understanding their interaction with and impact on a fragile environment, was funded and began in December, 1995. There are 13 partners from 10 European countries extending from Iceland to Greece. In this paper, the objectives of the five main tasks will be described and some of the results will be highlighted. Other presentations and posters in this Theme Session will deal with specific subtasks in more detail.
Detailed Spectral Analysis of the Type Ib Supernova 1999dn. Paper I: Hydrogen-free Models
Creators: name: Ketchum, Wesley
name: Baron, E.
name: Branch, David
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present spectral fits to five epochs of the typical Type Ib supernova 1999dn using the generalized, non-LTE, stellar atmospheres code PHOENIX. Our goal is threefold: to determine basic physical properties of the supernova ejecta, such as velocity, temperature, and density gradients; to reproduce He I absorption lines by invoking non-thermal excitation; and, to investigate possible spectral signatures of hydrogen, especially a feature around 6200 Angstrom, which has been attributed to high velocity $H_α$. Our models assume an atmosphere with uniform composition devoid of any hydrogen. Our model spectra fit the observed spectra well, successfully reproducing most of the features, including the prominent He I absorptions. The most plausible alternative to $H_α$ as the source of the 6200 Angstrom feature is a blend of Fe II and Si II lines, which can be made stronger to fit the observed feature better by increasing the metallicity of the ejecta. High-metallicity models fit well at early epochs, but not as well as solar-metallicity models after maximum light. While this blend of metal lines is a reasonable explanation of the source of the 6200 Angstrom feature, it is still important to investigate hydrogen as the source; therefore, a second paper will present models that include a thin shell of hydrogen around the main composition structure.
description: 24 pages, 11 figures, 2 tables, submitted to ApJ
title: Dynamics Of Population Fecundity Of Greenland Halibut (Reinhardtius Hippoglossoides) Of The Norwegian-Barents Sea Stock By The Data From 1984-1997 Trawl Surveys
Creators: name: Smirnov, O.V.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Population fecundity indices were calculated for period 1984-1997 using the data from trawl surveys. Highest level of population fecundity occurred in the beginning of time series. Lowest indices ( 25- 30% of 1984-1985 level) have been obtained in 1987-1992. In 1993-1997 population fecundity increased significantly but remained at level twice as low compared to 1984-1985 level. On the ground of the population fecundity analysis it is supposed that real growth of the Greenland halibut commercial stock owing to rising of recruitment is likely to begin in 2002-2004.
Working and Assembly Modes of the Agile Eye
Creators: name: Bonev, Ilian
name: Chablat, Damien
name: Wenger, Philippe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper deals with the in-depth kinematic analysis of a special spherical parallel wrist, called the Agile Eye. The Agile Eye is a three-legged spherical parallel robot with revolute joints in which all pairs of adjacent joint axes are orthogonal. Its most peculiar feature, demonstrated in this paper for the first time, is that its (orientation) workspace is unlimited and flawed only by six singularity curves (rather than surfaces). Furthermore, these curves correspond to self-motions of the mobile platform. This paper also demonstrates that, unlike for any other such complex spatial robots, the four solutions to the direct kinematics of the Agile Eye (assembly modes) have a simple geometric relationship with the eight solutions to the inverse kinematics (working modes).
Higher-order Efficiency Bound and Its Application to Nonlinear Nano-thermoelectrics
Creators: name: Kamijima, Takuya
name: Otsubo, Shun
name: Ashida, Yuto
name: Sagawa, Takahiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Power and efficiency of heat engines are two conflicting objectives, and a tight efficiency bound is expected to give insights on the fundamental properties of the power-efficiency tradeoff. Here we derive an upper bound on the efficiency of steady-state heat engines, which incorporates higher-order fluctuations of the power. In a prototypical model of nonlinear nanostructured thermoelectrics, we show that the obtained bound is tighter than a well-established efficiency bound based on the thermodynamic uncertainty relation, demonstrating that the higher-order terms have rich information about the thermodynamic efficiency in the nonlinear regime. In particular, we find that the higher-order bound is exactly achieved if the tight coupling condition is satisfied. The obtained bound gives a consistent prediction with the observation that nonlinearity enhances the power-efficiency tradeoff, and would also be useful for various nanoscale engines.
description: 10 pages, 6 figures
Chemical abundances in the nuclear region of nearby galaxies from the Palomar Survey
Creators: name: Pérez-Díaz, Borja
name: Masegosa, Josefa
name: Márquez, Isabel
name: Pérez-Montero, Enrique
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We estimate chemical abundances and ionization parameters in the nuclear region of a sample of 143 galaxies from the Palomar Spectroscopic Survey, composed by Star-Forming Galaxies (87), Seyferts 2 (16) and LINERs (40) using the \textsc{Hii-Chi-mistry} code. We also study for each spectral type the correlation of the derived quantities with other different properties of the host galaxies, such as morphology, stellar mass, luminosity and mass of their Supermassive Black Holes. The results obtained for Star-Forming Galaxies are used to check the soundness of our methodology. Then, we replicate a similar study for our sample of AGN, distinguishing between Seyferts 2 and LINERs. We report a saturation of Oxygen abundances for the nuclear regions of SFG. The correlations between chemical abundances and their host galaxy properties for SFG are in good agreement with previous studies. We find that Seyferts 2 present slightly higher chemical abundances but this result must be reexamined in larger samples of Seyfert galaxies. In contrast, we obtain lower chemical abundances for LINERs than for SFG. We confirm these relatively lower abundances for another sample of infrared luminous LINERs in the same stellar mass range. Our analysis of AGNs (both LINERs and Seyferts) shows that their host galaxy properties are not correlated with our estimated chemical abundances.
description: Accepted for publication in MNRAS. 21 pages, 17 figures, 12 tables. Minor change: description of the code (Sec 2.4)
title: C.P.U.E. Abundance IndICES Of The Main Target Species Of The French Deep-Water Fishery In ICES Sub-Areas V, Vi And Vii
Creators: name: Lorance, Pascal
name: Dupouy, Hervé
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Three major fleets of high sea trawlers practising deep-water fishing are defined. Altogether, these fleets catch more than 90 % of the French landings of deep-water species. A multiplicative model has been adjusted to monthly catch per unit effort (c.p.u.e.) weighted by effort to estimate annual indices. C.p.u.e.'s of roundnose. grenadier (Coryphaenoides rupestris), orange roughy (Hoplostethus atlanticus), black uscabbard fish (Aphanopus carbo) and deep-sea squalids (Centroscymnus coe/o/epis and Centrophorus squamosus) are analysed in relation to the trends in fishing effort and to the development of the deep-water fishery. C.p.u.e.'s of other species : saithe (Pollachius virens), blue ling (Mo/va dipterygia) and ling (Molva mo/va) are treated in the same way because they are targeted by the same fishing fleets. Their analysis allows to investigate interaction between the different targets of the fleets and to compare the species trends.For the recently exploited deep-water species, the c.p.u.e. trends are not consistent between fleets. The differences are interpreted to be due to technical changes and the indices from the fleet of larger specialised deep­water trawlers is considered to be the most representative of the actual fish abundance. For saithe and blue ling the declining trend in c.p.u.e. previously documented are observed again with slope differences probably due to method.The c.p.u.e. of deep-water species show strong declining trends suggesting severe impact of the fishery. However, possible effect of the fishing strategy on the amount of effort counted as species directed effort cannot be excluded because the catch and effort data available is detailed by statistical squares while the proper scale would be the trawl haul. Moreover, the indices cannot be considered as indices for the whole ICES sub-areas investigated because a distribution the fishing effort was concentrated in a restricted area of ICES division VIa.
title: The Discards Of Roundnose Grenadier In The French Fishery In ICES Subareas Vi And Vii
Creators: name: Dupouy, Herve
name: Allain, Valerie
name: Kergoat, Bernard
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.The French fishery for roundnose grenadier (Coryphaenoides rupestris) started in 1989, in the West of Scotland and Ireland. The production of roundnose grenadier in that area is raging from 6 000 tons to 8 000 tons. Landings are sampled since 1990 and discards were studied between 1995 and 1997, by observers onboard of fishing vessels. Three species are predominant in weigth in the discards : Deania calceus, Coryphaenoides rupestris and Alepocephalus bairdii. In the landings, Coryphaenoides rupestris is dominant, followed by Aphanopus carbo, the two species of siki (C. Coelolepis and C. Squamosus) and Hoplosthetus atlanticus. An estimate, made for the year 1996, indicates that the total landings for the french fishery West of British Isles and Ireland is close to 13 500 tons instead the total discards are close to 12 000 tons. On this total, roundnose grenadier represents 6 500 tons landed and 2 000 tons discarded.
Direct evidence of the gradient drift instability being the origin of a rotating spoke in a crossed field plasma
Creators: name: Xu, Liang
name: Eremin, Denis
name: Brinkmann, Ralf Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A plasma rotating spoke in a crossed field discharge is studied using 2D radial-azimuthal fully kinetic Particle-In-Cell Monte Carlo Collision (PIC/MCC) simulations. The kinetic model reveals the whole perturbation spectrum of the gradient drift instability in the linear stage: Simon-Hoh, lower-hybrid and ion sound modes, providing direct evidence of the spoke of the gradient drift instability nature. The two-fluid dispersion relation of the gradient drift instability was utilized to analyze the linear development of instabilities in the simulations. The charge separation effect was incorporated in the fluid linear theory and a super-resolution signal processing method (multiple signal classification) was applied to obtain the numerical frequency spectrum. The simulated spectrum and growth rate show excellent agreement with the theoretical dispersion relation (real frequency and imaginary frequency) over investigated cases. The most linearly unstable mode was found to be the lower hybrid instability and the mode transition into the m=1 macroscopic rotating structure after saturation of the linear phase is accompanied by an inverse energy cascade. In the nonlinear stage, the pronounced spoke phenomena can occur when the heating of $\mathbf{E_θ\times B}$ electron flow channeled in the spoke front passage suffices to provide the enhanced ionization.
Muon spin relaxation and hyperfine-enhanced 141Pr nuclear spin dynamic in Pr(Os,Ru)4Sb12 and (Pr,La)Os4Sb12
Creators: name: Shu, Lei
name: MacLaughlin, D. E.
name: Aoki, Y.
name: Tunashima, Y.
name: Yonezawa, Y.
name: Sanada, S.
name: Kikuchi, D.
name: Sato, H.
name: Heffner, R. H.
name: Higemoto, W.
name: Ohishi, K.
name: Ito, T. U.
name: Bernal, O. O.
name: Hillier, A. D.
name: Kadono, R.
name: Koda, A.
name: Ishida, K.
name: Sugawara, H.
name: Frederick, N. A.
name: Yuhasz, W. M.
name: Sayles, T. A.
name: Yanagisawa, T.
name: Maple, M. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Zero- and longitudinal-field muon spin relaxation (MuSR) experiments have been carried out in the alloy series Pr(Os1-xRux)4Sb12 and Pr1-yLayOs4Sb12 to elucidate the anomalous dynamic muon spin relaxation observed in these materials. The damping rate associated with this relaxation varies with temperature, applied magnetic field, and dopant concentrations x and y in a manner consistent with the ``hyperfine enhancement'' of 141Pr nuclear spins first discussed by Bleaney in 1973. This mechanism arises from Van Vleck-like admixture of magnetic Pr3+ crystalline-electric-field-split excited states into the nonmagnetic singlet ground state by the nuclear hyperfine coupling, thereby increasing the strengths of spin-spin interactions between 141Pr and muon spins and within the 141Pr spin system. We find qualitative agreement with this scenario, and conclude that electronic spin fluctuations are not directly involved in the dynamic muon spin relaxation.
description: 10 pages, 6 figures, to be published in Phys. Rev. B
Tunable effective masses of magneto-excitons in two-dimensional materials
Creators: name: Chaves, Andrey
name: Peeters, F. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Excitonic properties of Ge$_2$H$_2$ and Sn$_2$H$_2$, also known as Xanes, are investigated within the effective mass model. A perpendicularly applied magnetic field induces a negative shift on the exciton center-of-mass kinetic energy that is approximately quadratic with its momentum, thus pushing down the exciton dispersion curve and flattening it. This can be interpreted as an increase in the effective mass of the magneto-exciton, tunable by the field intensity. Our results show that in low effective mass two-dimensional semiconductors, such as Xanes, the applied magnetic field allows one to tune the magneto-exciton effective mass over a wide range of values.
A convenient category for directed homotopy
Creators: name: Fajstrup, L.
name: Rosicky, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18G55, 55U40, 68Q55

description: We propose a convenient category for directed homotopy consisting of preordered topological spaces generated by cubes. Its main advantage is that, like the category of topological spaces generated by simplices suggested by J. H. Smith, it is locally presentable.
Dangling-bond spin relaxation and magnetic 1/f noise from the amorphous-semiconductor/oxide interface: Theory
Creators: name: de Sousa, Rogerio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a model for magnetic noise based on spin-flips (not electron-trapping) of paramagnetic dangling-bonds at the amorphous-semiconductor/oxide interface. A wide distribution of spin-flip times is derived from the single-phonon cross-relaxation mechanism for a dangling-bond interacting with the tunneling two-level systems of the amorphous interface. The temperature and frequency dependence is sensitive to three energy scales: The dangling-bond spin Zeeman energy delta, as well as the minimum (E_min) and maximum (E_max) values for the energy splittings of the tunneling two-level systems. We compare and fit our model parameters to a recent experiment probing spin coherence of antimony donors implanted in nuclear-spin-free silicon [T. Schenkel {\it et al.}, Appl. Phys. Lett. 88, 112101 (2006)], and conclude that a dangling-bond area density of the order of 10^{14}cm^{-2} is consistent with the data. This enables the prediction of single spin qubit coherence times as a function of the distance from the interface and the dangling-bond area density in a real device structure. We apply our theory to calculations of magnetic flux noise affecting SQUID devices due to their Si/SiO_2 substrate. Our explicit estimates of flux noise in SQUIDs lead to a noise spectral density of the order of 10^{-12}Phi_{0}^{2} {Hz}^{-1} at f=1Hz. This value might explain the origin of flux noise in some SQUID devices. Finally, we consider the suppression of these effects using surface passivation with hydrogen, and the residual nuclear-spin noise resulting from a perfect silicon-hydride surface.
description: Final published version
Isolation of a bis(silyl)palladium complex and Si–Si bond formation on a mononuclear palladium complex
Creators: name: Su, Yan Rong
name: Wei Liu, Jia
name: Ju, Fei Fei
name: Xu, Jing Wen
name: Lu, Qing
name: Xiao, Kang
name: Wang, Shi
name: Li, Yong Hua
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Treatment of a chelating silane 1-(dimethylsilyl)-2-silylbenzene (4) with Pd(PEt3)4 in the ratio of 2:1 selectively afforded a unique mononuclear palladium complex [{1,2-C6H4(SiMe2)(SiH)}2Pd(PEt3)2] (6), which was formed by two Si–Si coupling reactions between the SiH2 groups and the SiMe2 moieties from two hydrosilane ligands. Complex 6 was structurally characterized by single crystal X-ray analysis and multinuclear NMR spectroscopic studies and is one of the very few examples of cis-bis(silyl)palladium(II) complexes containing in situ formed Si–Si single bonds.
Local purity distillation with bounded classical communication
Creators: name: Krovi, Hari
name: Devetak, Igor
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Local pure states are an important resource for quantum computing. The problem of distilling local pure states from mixed ones can be cast in an information theoretic paradigm. The bipartite version of this problem where local purity must be distilled from an arbitrary quantum state shared between two parties, Alice and Bob, is closely related to the problem of separating quantum and classical correlations in the state and in particular, to a measure of classical correlations called the one-way distillable common randomness. In Phys. Rev. A 71, 062303 (2005), the optimal rate of local purity distillation is derived when many copies of a bipartite quantum state are shared between Alice and Bob, and the parties are allowed unlimited use of a unidirectional dephasing channel. In the present paper, we extend this result to the setting in which the use of the channel is bounded. We demonstrate that in the case of a classical-quantum system, the expression for the local purity distilled is efficiently computable and provide examples with their tradeoff curves.
description: 9 pages and 2 figure in .eps
Policy Brief - INTERAGENCY OPERATION IN THE AMAZON FIRE FIGHTING
Creators: name: Sandes Monfredo Mendes, Cintiene
Publisher: name: Zenodo
Year: 2021
Subjects: Amazon
Interagency
fire

description: In recent years, the National Institute for Space Research, INPE, has indicated an increase in fire and deforestation areas in the Amazon region. The indicators show a constant need to develop public control measures and policies in illegal activities and establish a network of agencies to combat these activities. INPE maps fire spots and deforested areas for information from control institutions and the Brazilian government to implement conditions to combat environmental crimes and resolve impacts on the environment and the local population. The Brazilian government's control and combat proposals are made through two sequential inter-agency operations involving civilian agencies and the armed forces: Verde-Brasil Operation and Verde-Brasil Operation 2. These deliberations through interagency action are emergency forms of managing the environmental crisis that has involved the Amazon region and the Brazilian responsive to the international context.
Molecular Clock on a Neutral Network
Creators: name: Raval, Alpan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: The number of fixed mutations accumulated in an evolving population often displays a variance that is significantly larger than the mean (the overdispersed molecular clock). By examining a generic evolutionary process on a neutral network of high-fitness genotypes, we establish a formalism for computing all cumulants of the full probability distribution of accumulated mutations in terms of graph properties of the neutral network, and use the formalism to prove overdispersion of the molecular clock. We further show that significant overdispersion arises naturally in evolution when the neutral network is highly sparse, exhibits large global fluctuations in neutrality, and small local fluctuations in neutrality. The results are also relevant for elucidating the topological structure of a neutral network from empirical measurements of the substitution process.
description: 10 pages
Η διοικητική εκτέλεση για φορολογικές οφειλές
Creators: name: Κανάβας, Βασίλειος Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εκτέλεση
Φορολογία
Οφειλές
Διοίκηση
Execution
Taxation
Debts
Administration

description: Σκοπός της διατριβής ήταν να παράσχει μία κάτοψη της διαδικασίας εισπράξεως των δημοσίων εσόδων, να παραθέσει τα πορίσματα της ελληνικής Θεωρίας και Νομολογίας επί των κρίσιμων ζητημάτων που ανέκυψαν από την εν λόγω θεματική τα τελευταία χρόνια, να εκθέσει τους προσωπικούς προβληματισμούς του γράφοντος ως προς την είσπραξη των δημοσίων εσόδων τόσο εν γένει, όσο και σε ό,τι αφορά ιδιαίτερες πτυχές της και τέλος να καταλήξει σε ορισμένα χρήσιμα συμπεράσματα και να διατυπώσει προτάσεις ως προς τον εξορθολογισμό των κακώς κειμένων της ισχύουσας νομοθεσίας. Εξετάσαμε την προαπαιτούμενα της διοικητικής εκτέλεσης και τις προϋποθέσεις εκκίνησης της διοικητικής εκτέλεσης. Στη συνέχεια παρουσιάσαμε αναλυτικά τη διαδικασία της εκτέλεσης που περιλαμβάνει μεταξύ άλλων την κατάσχεση. Ακόμη αναφερθήκαμε αναλυτικά στην διαδικασία του πλειστηριασμού και καταλήξαμε σε μια σειρά προβληματισμών και προτάσεων.
description: The purpose of the dissertation was to provide a plan to the proceedings for the collection of public revenue, to quote the findings of the Greek theory and case law on critical issues raised by that thematic in recent years, to explain the personal concerns of the writer as to the collection of public revenue as generally and in particular its specific aspects and finally result in some useful conclusions and to make proposals to rationalize the poorly texts of the existing legislation.We examined the prerequisites of administrative implementation and the conditions for starting administrative implementation. Then we presented the execution process in detail that includes confiscation. We have also mentioned in detail in the auction process and ended up in a series of concerns and proposals.
The beginning of string theory: a historical sketch
Creators: name: Di Vecchia, Paolo
name: Schwimmer, Adam
Publisher: name: arXiv
Year: 2007
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note we follow the historical development of the ideas that led to the formulation of String Theory. We start from the inspired guess of Veneziano and its extension to the scattering of $N$ scalar particles, then we describe how the study of its factorization properties allowed to identify the physical spectrum making the string worldsheet manifest and finally we discuss how the critical values of the intercept of the Regge trajectory and of the critical dimension were fixed to 1 and 26.
description: Latex 18 pages, 3 figures, use svmult.cls. Contribution to the volume "String theory and fundamental interactions", dedicated to Gabriele Veneziano on his 65th birthday