cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sulfur cycling in oceanic oxygen minimum zones
Creators: name: Callbeck, Cameron M.
name: Canfield, Donald E.
name: Kuypers, Marcel M. M.
name: Yilmaz, Pelin
name: Lavik, Gaute
name: Thamdrup, Bo
name: Schubert, Carsten J.
name: Bristow, Laura A.
Publisher: name: John Wiley & Sons, Inc.
Year: 2021

description: The sulfur cycle is an important, although understudied facet of today's modern oxygen minimum zones (OMZs). Sulfur cycling is most active in highly productive coastal OMZs where sulfide‐rich sediments interact with the overlying water column, forming a tightly coupled benthic‐pelagic sulfur cycle. In such productive coastal systems, highly eutrophic and anoxic conditions can result in the benthic release of sulfide leading to an intensification of OMZ‐shelf biogeochemistry. Active blooms involving a succession of sulfide‐oxidizing bacteria detoxify sulfide and reduce nitrate to N2, while generating nitrite and ammonium that augment anammox and nitrification. Furthermore, the abiotic interactions of sulfide with trace metals may have the potential to moderate nitrous oxide emissions. While sulfide/sulfur accumulation events were previously considered to be rare, new evidence indicates that events can develop in OMZ shelf waters over prolonged periods of anoxia. The prevalence of these events has ramifications for nitrogen loss and greenhouse gas emissions, including other linked cycles involving carbon and phosphorous. Sulfur‐based metabolisms and activity also extend into the offshore OMZ as a result of particle microniches and lateral transport processes. Moreover, OMZ waters ubiquitously host a community of organosulfur‐based heterotrophs that ostensibly moderate the turnover of organic sulfur, offering an exciting avenue for future research. Our synthesis highlights the widespread distribution and multifaceted nature of the sulfur cycle in oceanic OMZs.
description: European Research Council http://dx.doi.org/10.13039/100010663
description: Natural Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039/501100000038
description: Villum Foundation http://dx.doi.org/10.13039/100008398
Investigating effects of near-surface resistivity changes on time-lapse ERTinversion
Creators: name: Von Bülow, Rhea
name: Klitzsch, Norbert
name: Degen, Denise Melanie
name: Wellmann, Jan Florian
Publisher: name: RWTH Aachen University
Year: 2019

description: Geophysical Research Abstracts. - 21 EGU General Assembly, EGU2019, Vienna, Austria, 7 Apr 2019 - 12 Apr 2019; Katlenburg-Lindau : European Geophysical Society EGU2019-16879, 1 Seite (2019).
description: Published by European Geophysical Society, Katlenburg-Lindau
NNI-Form Quark Mass Matrix Expressed by the Observable Quantities
Creators: name: Koide, Yoshio
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is pointed out that the phase convention of the CKM matrix V affects texture analysis of the quark mass matrices (M_u, M_d) when we try to describe (M_u, M_d) by the observable quantities (quark masses and CKM matrix parameters) only. This is demonstrated for a case of the non-Hermitian Fritzsch-type mass matrix (tilde{M}_u, tilde{M}_d), which is a general expression of quark mass matrix (M_u, M_d) and is described by twelve parameters. We find that we can always choose a phase convention of V which yields tilde{M}_{u32} = 0, so that the remaining ten parameters in (tilde{M}_u, tilde{M}_d) can completely be expressed by the ten observable quantities.
description: 11 pages (LaTeX); Title was changed
Analysis of the effect of cash management on the solvency and profitability of insurance companies in Benin
Creators: name: HOUNDJO André
Publisher: name: Zenodo
Year: 2024

description: The objective of this research is to analyse the effect of cash management on the solvency and profitability of insurance companies in Benin. To do this, we used data from the financial statements for the period 2017 to 2021 published by the Conseil des Ministres des Assurances (CMA) and the Direction des Assurances du Bénin. The study covered twelve (12) insurance companies in Benin and was carried out using descriptive analysis (univariate and bivariate) and econometric analysis. The initial results show that there is a non-significant linear relationship between the company's cash position and solvency on the one hand, and economic and financial profitability on the other. This relationship is significant for operating and commercial profitability on the one hand and the net insurance margin on the other. The econometric results prove that the level of cash-flow does not significantly explain the solvency and the economic and financial profitability of an insurance company. However, the level of cash has a negative and significant effect on operating and commercial profitability on the one hand and a positive and significant effect on the net insurance margin on the other. To improve the effect of cash management on a company's solvency and profitability, operational recommendations have been made based on the results of our analyses. The study suffers from certain limitations, namely other types of profitability of an insurance company, such as underwriting profitability or technical profitability, net profitability and profitability by business segment, have not been addressed in this study. Other studies may be conducted to address these aspects of the subject. Operational recommendations have been made to them to control risks of all kinds. There is no funding for this study.
MAESTRI - Resource and energy efficiency for process industries
Creators: name: MAESTRI Consortium
Publisher: name: Zenodo
Year: 2016
Subjects: Industrial Symbiosis
Ecoefficiency
Lean Management
IoT
Industry 4.0

description: The MAESTRI project aims to advance the sustainability of European manufacturing and process industries. This is done by providing a management system in the form of a flexible and scalable platform, and to guide and simplify the implementation of an innovative approach, the Total Efficiency Framework. The overall aim of this framework is to encourage a culture of improvement within process industries by assisting the decision-making process, supporting the development of improvement strategies and helping define the priorities to improve the company's environmental and economic performance. Its development and validation will be achieved through application in four real industrial settings across a variety of activity sectors.
 The Total Efficiency Framework will be based on four main pillars to overcome the current barriers and promote sustainable improvements: a) an effective management system targeted at process and continuous improvement; b) efficiency assessment tools to define improvement and optimisation strategies and support decision-making processes; c) integration with a toolkit for Industrial Symbiosis focusing on material and energy exchange; d) a software Platform, based on the Internet of Things (IoT), to simplify the concept implementation and ensure an integrated control of improvement process.
 Over a period of 4 years, the project will deliver exploitable resultsclustered into technological outputs (including eco-innovative products, processes and services tailored to industrial end-users) and structured solutions (involving technical, economical, legislative and policy solutions synergistically combined).
Pinning of slidding collective charge state in a 1D attractive fermion system
Creators: name: Chen, Shu
name: Wang, Yupeng
name: Yang, Fan
name: Pu, Fu-Cho
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate an interacting fermion model with boundary potential by using Bethe ansatz method. The ground state properties of the system and the boundary effect are discussed. It is found that attractive boundary potential leads to the boundary bound state. An interesting phenomenon is that the slidding collective charges in a periodic system, which is formed due to the attractive interaction among the fermions, will be pinned around the boundary, as long as the negative boundary potential is strong enough.
description: 8 pages, revtex, no figures
Observation of Andreev Surface Bound States in the 3-K phase Region of Sr_2RuO_4
Creators: name: Mao, Z. Q.
name: Nelson, K. D.
name: Jin, R.
name: Liu, Y.
name: Maeno, Y.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The tunneling spectrum of the superconducting phase with T_c ~ 3.0 K has been measured in the Ru-embedded region of Sr_2RuO_4 using cleaved junctions. A sharp zero-bias conductance peak (ZBCP) has been observed below 3 K. All characteristics of this ZBCP suggest that it originates from Andreev surface bound states, indicating that the pairing in the 3-K phase is also non-s-wave. Below the bulk T_c of Sr_2RuO_4 (~1.5 K), a bell-shaped ZBCP was found. This supports that there is a phase transition in the 3-K phase region near the bulk T_c.
description: 4 pages, to appear in Phys. Rev. Lett. 87 (2001)
Zorzinichthyidae Tyler & Bannikov 2002
Creators: name: Laan, Richard Van Der
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Zorzinichthyidae

description: Family † Zorzinichthyidae Tyler & Bannikov 2002
 † Zorzinichthyidae Tyler & Bannikov 2002: 24 (family) † Zorzinichthys Tyler & Bannikov 2002
description: Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on page 81, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/5557557
Closed-form performance analysis of linear MIMO receivers in general fading scenarios
Creators: name: Kieburg, M.
name: Akemann, G.
name: Alfano, G.
name: Caire, G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Linear precoding and post-processing schemes are ubiquitous in wireless multi-input-multi-output (MIMO) settings, due to their reduced complexity with respect to optimal strategies. Despite their popularity, the performance analysis of linear MIMO receivers is mostly not available in closed form, apart for the canonical (uncorrelated Rayleigh fading) case, while for more general fading conditions only bounds are provided. This lack of results is motivated by the complex dependence of the output signal-to-interference and noise ratio (SINR) at each branch of the receiving filter on both the squared singular values as well as the (typically right) singular vectors of the channel matrix. While the explicit knowledge of the statistics of the SINR can be circumvented for some fading types in the analysis of the linear Minimum Mean-Squared Error (MMSE) receiver, this does not apply to the less complex and widely adopted Zero-Forcing (ZF) scheme. This work provides the first-to-date closed-form expression of the probability density function (pdf) of the output ZF and MMSE SINR, for a wide range of fading laws, encompassing, in particular, correlations and multiple scattering effects typical of practically relevant channel models.
description: 16 pages, 2 figures, contents submitted to IEEE/VDE WSA 2019
Additional file 1: of A multifaceted approach for analyzing complex phenotypic data in rodent models of autism
Creators: name: Ishita Das
name: Estevez, Marcel
name: Sarkar, Anjali
name: Banerjee-Basu, Sharmila
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: Computational Biology

description: Table S1. Phenocategory definitions. Table S2. Rescue model type definitions. Table S3. SFARI scores of genes in Fig. 4b. Table S4. Target or mechanism of drugs tested in two or more paradigms on rodent genetic models that are not in ASD clinical trials. Table S5. Shank3 top 31 most frequent phenotypes including targeted protein expression. Table S6. Shank3 rescue data genetic reinstatement. Table S7. Shank3 rescue data all outcomes of drugs. Table S8. Shank3 domains with model IDs. (DOCX 80 kb)
title: Medina Martins, M., Cunha, M. Pinto de Albuquerque, P. (Org.) (2022). Direitos humanos das mulheres. Universidade Católica Editora (526 pp.)
Creators: name: Mira, Rita
Publisher: name: CICS.NOVA - Centro Interdisciplinar de Ciências Sociais, Faculdade de Ciências Sociais e Humanas, Universidade NOVA de Lisboa / Edições Húmus
Year: 2023

description: Recensão da obra 'Direitos humanos das mulheres' (2022) por Rita Mira.
description: Mira, Rita. (2023). Medina Martins, M., Cunha, M. & Pinto de Albuquerque, P. (Org.) (2022). Direitos humanos das mulheres. Universidade Católica Editora (526 pp.). Faces de Eva. Estudos sobre a Mulher, (50), 245-252. https://doi.org/10.34619/5gnn-h1d9 | ISSN: 0874-6885
Logarithmic corrections from ferromagnetic impurity ending bonds of open antiferromagnetic host chains
Creators: name: Lou, Jizhong
name: Dai, Jianhui
name: Qin, Shaojin
name: Su, Zhaobin
name: Yu, Lu
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the logarithmic corrections due to ferromagnetic impurity ending bonds of open spin 1/2 antiferromagnetic chains, using the density matrix renormalization group technique. A universal finite size scaling $\sim {\frac 1 {L \log L}}$ for impurity contributions in the quasi-degenerate ground state energy is demonstrated for a zigzag spin 1/2 chain at the critical next nearest neighbor coupling and the standard Heisenberg spin 1/2 chain, in the long chain limit. Using an exact solution for the latter case it is argued that one can extract the impurity contributions to the entropy and specific heat from the scaling analysis. It is also shown that a pure spin 3/2 open Heisenberg chain belongs to the same universality class.
description: 4 pages, 7 eps figures
Numerical relaxation of a 3D MHD Taylor - Woltjer state subject to abrupt expansion
Creators: name: Mukherjee, Rupak
name: Ganesh, Rajaraman
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Since the advent of Taylor-Woltjer theory [J B Taylor, PRL, 33, 1139 (1974), L Woltjer, PNAS, 44, 489 (1958)], it has been widely believed that situations with perfectly conducting boundaries and near ideal conditions, the final state of MHD system would be force-free Taylor-Woltjer states defined as $\vec{\nabla} \times \vec{B} = α\vec{B}$ with $α$ as a constant and $\vec{B}$ is the magnetic field defined over a volume $V$. These states are of fundamental importance in fusion plasmas [J B Taylor, RMP 58, 741 (1986)]. More recently, several new MHD models have been proposed - for example Reduced Multi-region relaxed MHD [S R Hudson {\it et al}, Phys. Plasmas, 19, 112502 (2012)] and arbitrary scale relaxation model to Taylor-Woltjer state [H Qin {\it et al}, PRL, 109, 235001 (2012)] to mention a few. In the present work, we use a 3D compressible MHD solver in cartesian geometry which can handle conducting or periodic as well has mixed boundary conditions to investigate numerically the arbitrary scale relaxation model proposed by Qin et al [H Qin {\it et al}, PRL, 109, 235001 (2012)]. For this purpose, we consider two volumes $V_{init}$ and $V_{final}$. We load the 3D MHD solver in the limit of zero compressibility with a Taylor-Woltjer state $B_{init}(x,y,z,t=0)$ and let it again a numerical evolve with conducting boundaries at $V_{init}$ to make sure that we have obtained a numerically steady Taylor - Woltjer state for volume $V_{init}$. Followed by this procedure, we "suddenly" relax the boundaries to a new volume $V_{final}$, such that $V_{init}$ $
description: Preprint of 27th IAEA Fusion Energy Conference (FEC 2018), Page 476, Poster
Educational Robotics Summer Camp at IPB: Internal RoboSTEAM Erasmus+ Report
Creators: name: Gonçalves, J.
Publisher: name: Zenodo
Year: 2019
Subjects: RoboSTEAM, Erasmus+, STEAM, Robots, Computational Thinking, EU, Summer camp

description: Presentation of the internal report about the Educational Robotics Summer Camp at Polytechnic Institute of Bragança (Portugal) celebrated in July 2019. This report was presented to the RoboSTEAM consortium at the 2nd face-to-face RoboSTEAM project meeting held in Karlsruhe (Germany) on September 30th to October 1st 2019. RoboSTEAM is an Erasmus+ Project (Ref. 2018-1-ES01-KA201-050939)
MOESM5 of Uptake and distribution of carboxylated quantum dots in human mesenchymal stem cells: cell growing density matters
Creators: name: Gabrielis Kundrotas
name: Karabanovas, Vitalijus
name: Marijus Pleckaitis
name: Juraleviciute, Marina
name: Steponkiene, Simona
name: Zivile Gudleviciene
name: Ricardas Rotomskis
Publisher: name: figshare
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Computational Biology

description: Additional file 5. Characterization of carboxylated QDs. (a) Image of QDs was made by Philips CM200 Field emission transmission electron microscope (TEM) equipped with light element EDX detector and Gatan Imaging Filter for PEELS and Energy Filtered TEM. Scale bar 20 nm. (b) 3D topography image of QDs was registered on mica surface with Innova atomic force microscope in the tapping mode using silicon nitride probes MPP12283. (c) Hydrodynamic size distribution of QDs was measured using a dynamic light scattering device Zeta Plus PALS. (d) The steady state absorption and photoluminescence spectra were recorded (λex = 625 nm) on Cary 50 UV–Vis spectrophotometer and Cary Eclipse fluorimeter, respectively. (e) PL decay curve of QDs was registered using FLS920 spectrometer equipped with 405 nm (66.9 ps) pulsed laser.
Constraint on Cosmic Density of the String Moduli Field in Gauge-Mediated Supersymmetry-Breaking Theories
Creators: name: Kawasaki, M.
name: Yanagida, T.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive a constraint on the cosmic density of string moduli fields in gauge-mediated supersymmetry-breaking theories by requiring that photons emitted from the unstable moduli fields should not exceed the observed X-ray backgrounds. Since mass of the moduli field lies in the range between $O(0.1)$keV and $O(1)$MeV and the decay occurs through a gravitational interaction, the lifetime of the moduli field is much longer than the age of the present universe. The obtained upperbound on their cosmic density becomes more stringent than that from the unclosure condition for the present universe for the mass greater than about 100keV.
description: 7 pages, a LaTeX2e file and two postscript figures
Optimal Stochastic Dynamic Scheduling for Managing Community Recovery from Natural Hazards
Creators: name: Nozhati, Saeed
name: Sarkale, Yugandhar
name: Chong, Edwin K. P.
name: Ellingwood, Bruce R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Following the occurrence of an extreme natural or man-made event, community recovery management should aim at providing optimal restoration policies for a community over a planning horizon. Calculating such optimal restoration polices in the presence of uncertainty poses significant challenges for community leaders. Stochastic scheduling for several interdependent infrastructure systems is a difficult control problem with huge decision spaces. The Markov decision process (MDP)-based optimization approach proposed in this study incorporates different sources of uncertainties to compute the restoration policies. The computation of optimal scheduling schemes using our method employs the rollout algorithm, which provides an effective computational tool for optimization problems dealing with real-world large-scale networks and communities. We apply the proposed methodology to a realistic community recovery problem, where different decision-making objectives are considered. Our approach accommodates current restoration strategies employed in recovery management. Our computational results indicate that the restoration policies calculated using our techniques significantly outperform the current recovery strategies. Finally, we study the applicability of our method to address different risk attitudes of policymakers, which include risk-neutral and risk-averse attitudes in the community recovery management.
description: Submitted to Reliability Engineering and System Safety
Spin-charge separation: From one hole to finite doping
Creators: name: Weng, Z. Y.
name: Sheng, D. N.
name: Ting, C. S.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the presence of nonlocal phase shift effects, a quasiparticle can remain topologically stable even in a spin-charge separation state due to the confinement effect introduced by the phase shifts at finite doping. True deconfinement only happens in the zero-doping limit where a bare hole can lose its integrity and decay into holon and spinon elementary excitations. The Fermi surface structure is completely different in these two cases, from a large band-structure-like one to four Fermi points in one-hole case, and we argue that the so-called underdoped regime actually corresponds to a situation in between.
description: 4 pages, 2 figures, presented in M2S-HTSC-VI conference (2000)
Desarrollo de la ciudadanía, convivencia, participación y gobernabilidad en colegios de Bogotá
Creators: name: Acuña Acevedo, Gladys
Publisher: name: Universidad Externado de Colombia
Year: 2020
Subjects: subject: Conducta social - Estudios de caso
subject: Participación juvenil - Aspectos sociales
subject: Convivencia - Aspectos socioeconómicos
subject: Ciudadanía
subject: Participación
subject: Gobernabilidad
subject: Convivencia escolar
subject: Control social
subject: Gestión Pública

description: El presente estudio es mixto de tipo descriptivo correlacional y utiliza grupos focales para complementar los datos encontrados con los cuales se realiza un diseño de triangulación. Este trabajo, pretende identificar los aspectos que influyen para que los jóvenes ejerzan la ciudadanía activa y desarrollen la convivencia, la participación escolar, y la gestión de la gobernabilidad, teniendo en cuenta que es en la educación secundaria cuando se ejerce la participación juvenil en temas políticos, sociales y educativos. La pregunta surgió con el propósito de identificar los aspectos que favorecen el ejercicio de la ciudadanía y promueven el desarrollo de la participación ciudadana, la convivencia escolar y la gobernabilidad en las instituciones educativas. El ejercicio de la participación mediante el control social es una herramienta innovadora de la Democracia Participativa, para que todos los ciudadanos y ciudadanas puedan vigilar, observar, recomendar y emprender denuncias si es necesario, sobre la gestión realizada por parte de las entidades públicas, pero la participación ciudadana nace en la construcción de lo público y desde el colegio.
Luvaridae Gill 1885
Creators: name: Laan, Richard Van Der
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Luvaridae

description: Family Luvaridae Gill 1885
 †Beerichthyidae Casier 1966: 158 (family) † Beerichthys Casier 1966
description: Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on page 81, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/5557557
Il MUVISS, MUseo VIrtuale di Scienze Spaziali, dell’IAPS - Report anni 2018-2019
Creators: name: Giacomini, L.
name: Mantovani, G.
name: Scalise, Emanuele
name: Ciampi, Federico
name: Daricello, L.
Publisher: name: IAPS Roma
Year: 2020

description: Il progetto della costituzione di un MUseo VIrtuale di Scienze Spaziali (MUVISS) dell’INAF - Istituto di Astrofisica e Planetologia Spaziali (IAPS) è nato nel 2018, con l’obiettivo di far vivere al pubblico l’esperienza della scienza e dell‘esplorazione spaziale grazie a tecnologie quali la realtà virtuale e aumentata, strumenti estremamente efficaci per la comunicazione, divulgazione e didattica dell’Astronomia e in particolare per l’esplorazione del Sistema Solare e dello spazio. Nel 2018/2019, il MUVISS è stato avviato con una prima dotazione hardware e software e la sperimentazione di alcuni progetti multimediali all’interno dei locali dell’IAPS, includendo anche progetti preesistenti come Pianeti in una stanza. I primi due anni di attività per il pubblico, raccontati in questo report, hanno incluso sia attività in sede che in manifestazioni esterne e hanno raggiunto un pubblico di circa 6000 persone. Come studio per la realizzazione del primo prototipo del MUVISS è stata anche pubblicata una tesi del Master in Scienza e Tecnologia Spaziali dell’Università di Roma Tor vergata, riportata come allegato a questo Report.
Domain size effects in Barkhausen noise
Creators: name: Bahiana, M.
name: Koiller, Belita
name: de Queiroz, S. L. A.
name: Denardin, J. C.
name: Sommer, R. L.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The possible existence of self-organized criticality in Barkhausen noise is investigated theoretically through a single interface model, and experimentally from measurements in amorphous magnetostrictive ribbon Metglas 2605TCA under stress. Contrary to previous interpretations in the literature, both simulation and experiment indicate that the presence of a cutoff in the avalanche size distribution may be attributed to finite size effects.
description: 5 pages, 3 figures, submitted so Physical Review E
Evaluación de la implementación de la política de jornada única en el Colegio Gustavo Restrepo en el periodo 2016 a 2018
Creators: name: Alonso Ramos, Deisy Paola
Publisher: name: Universidad Externado de Colombia
Year: 2019
Subjects: subject: Política pública - Aspectos socioeconómicos
subject: Evaluación académica - Estudios de caso
subject: Aprendizaje - Evaluación
subject: Jornada única
subject: Implementación
subject: Tiempo efectivo de aprendizaje
subject: Ambientes lúdicos de aprendizaje
subject: Caracterización

description: La presente investigación evaluativa buscó evaluar la implementación de la política pública de Jornada Única en el Colegio Gustavo Restrepo en el periodo 2016 a 2018. Por ende, el objetivo principal de esta fue evaluar los resultados en calidad educativa a través del análisis de los lineamientos de política pública de Jornada Única y de las apreciaciones de algunos integrantes de la comunidad educativa. A la par de este objetivo general, se realizó la caracterización de la implementación de la Jornada Única en el colegio Gustavo Restrepo durante el periodo de vigencia de la investigación, teniendo como base las fases de implementación desarrolladas y de los componentes necesarios para dicha implementación según lo estipulado por los Decretos 501 de 2016 y 2105 de 2017. En este punto, se tuvieron en cuenta los efectos poco satisfactorios de la política pública en la comunidad educativa, específicamente en cuanto a los resultados del ISCE y de los indicadores de eficiencia: matrícula y reprobación escolar. Luego, se determinaron los resultados de la política de Jornada Única en la dimensión tiempo efectivo de aprendizaje a partir de la reestructuración curricular adoptada con la implementación y del agenciamiento del tiempo efectivo de aprendizaje al interior de las aulas de clase. Finalmente, debido a que esta investigación es de corte mixto (cuali – cuanti) requirió que el proceso de triangulación de la información se desarrollara mediante lo expuesto por Cisterna (2005) en cuanto a las categorías apriorísticas y su cruce con los referentes teóricos expuestos en el marco teórico y determinar los hallazgos de la investigación.
CP-violating Dark Photon Interaction
Creators: name: Fuyuto, Kaori
name: He, Xiao-Gang
name: Li, Gang
name: Ramsey-Musolf, Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce a scenario for CP-violating (CPV) dark photon interactions in the context of non-abelian kinetic mixing. Assuming an effective field theory that extends the Standard Model (SM) field content with an additional $U(1)$ gauge boson ($X$) and a $SU(2)_L$ triplet scalar, we show that there exist both CP-conserving and CPV dimension five operators involving these new degrees of freedom and the SM $SU(2)_L$ gauge bosons. The former yields kinetic mixing between the $X$ and the neutral $SU(2)_L$ gauge boson (yielding the dark photon), while the latter induces CPV interactions of the dark photon with the SM particles. We discuss experimental probes of these interactions using searches for permanent electric dipole moments (EDMs) and di-jet correlations in high-energy $pp$ collisions. It is found that the experimental limit on the electron EDM currently gives the strongest restriction on the CPV interaction. In principle, high energy $pp$ collisions provide a complementary probe through azimuthal angular correlations of the two forward tagging jets in vector boson fusion. In practice, observation of the associated CPV asymmetry is likely to be challenging.
MPEC 2024-K41 : COMET C/2024 G7 (ATLAS)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: COMET C/2024 G7 (ATLAS)

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Coexistence of Singlet and Triplet Attractive Channels in the Pairing Interactions Mediated by Antiferromagnetic Fluctuations
Creators: name: Shimahara, Hiroshi
Publisher: name: arXiv
Year: 2000
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose a phase diagram of quasi-low-dimensional type II superconductors in parallel magnetic fields, when antiferromagnetic fluctuations contribute to the pairing interactions. We point out that pairing interactions mediated by antiferromagnetic fluctuations necessarily include both singlet channels and triplet channels as attractive interactions. Usually, a singlet pairing is favored at zero field, but a triplet pairing occurs at high fields where the singlet pairing is suppressed by the Pauli paramagnetic pair-breaking effect. As a result, the critical field increases divergently at low temperatures. A possible relation to experimental phase diagrams of a quasi-one-dimensional organic superconductor is briefly discussed. We also discuss a possibility that a triplet superconductivity is observed even at zero field.
description: 4 pages, 1 figure (Latex, revtex.sty, epsf.sty)
QCD Corrections to Decay Distributions of Neutral Higgs Bosons with (In)definite CP Parity
Creators: name: Bernreuther, W.
name: Brandenburg, A.
name: Flesch, M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the order $α_s$ QCD corrections to the density matrix for the decay of a neutral Higgs boson $ϕ$ with (in)definite CP parity into a quark antiquark pair, respectively the QED corrections for the decay into a pair of charged leptons. We classify and calculate single spin asymmetries and spin-spin correlations which are generated by the scalar and pseudoscalar Yukawa couplings. These spin effects can be traced in $ϕ\to τ^-τ^+$ and, for heavy Higgs bosons, in $ϕ\to t\bar{t}$. We also calculate resulting correlations among the final states and estimate, for the respective decay modes, the number of events needed to measure the Yukawa couplings with these correlations at the 3 sigma level.
description: 32 pages, REVTeX, uses: psfig,amssym,aps,preprint 14 ps figures
Quantum confinement effects in Pb Nanocrystals grown on InAs
Creators: name: Zhang, Tianzhen
name: Vlaic, Sergio
name: Pons, Stéphane
name: Allan, Guy
name: Delerue, Christophe
name: Assouline, Alexandre
name: Zimmers, Alexandre
name: David, Christophe
name: Rodary, Guillemin
name: Girard, Jean-Christophe
name: Roditchev, Dimitri
name: Aubin, Hervé
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the recent work of Ref.\cite{Vlaic2017-bs}, it has been shown that Pb nanocrystals grown on the electron accumulation layer at the (110) surface of InAs are in the regime of Coulomb blockade. This enabled the first scanning tunneling spectroscopy study of the superconducting parity effect across the Anderson limit. The nature of the tunnel barrier between the nanocrystals and the substrate has been attributed to a quantum constriction of the electronic wave-function at the interface due to the large Fermi wavelength of the electron accumulation layer in InAs. In this manuscript, we detail and review the arguments leading to this conclusion. Furthermore, we show that, thanks to this highly clean tunnel barrier, this system is remarkably suited for the study of discrete electronic levels induced by quantum confinement effects in the Pb nanocrystals. We identified three distinct regimes of quantum confinement. For the largest nanocrystals, quantum confinement effects appear through the formation of quantum well states regularly organized in energy and in space. For the smallest nanocrystals, only atomic-like electronic levels separated by a large energy scale are observed. Finally, in the intermediate size regime, discrete electronic levels associated to electronic wave-functions with a random spatial structure are observed, as expected from Random Matrix Theory.
description: Main 12 pages, Supp: 6 pages
Factores familiares estructurales asociados al desempeño académico
Creators: name: Barriga Paredes, Edgar Augusto
Publisher: name: Universidad Externado de Colombia
Year: 2020
Subjects: subject: Evaluación académica - Estudios de caso
subject: Educación académica - Aspectos sociales
subject: Instituciones - Enseñanza
subject: Factores familiares
subject: Desempeño académico
subject: Saber 11
subject: Pruebas Estandarizadas

description: En Colombia el puntaje obtenido en la prueba Saber 11 por los estudiantes que finalizan su educación secundaria es uno de los principales requisitos para acceder a Instituciones de Educación Superior (IES) y para aspirar a diferentes programas de apoyo económico que brinda el estado. Los estudiantes de estratos socioeconómicos bajos ven limitadas sus posibilidades de continuar estudios superiores principalmente por no contar con los recursos económicos necesarios para asumir el costo de la formación profesional en una IES privada, pero también debido a que un alto porcentaje de bachilleres no logran el puntaje mínimo requerido en Saber 11, lo cual hace que las familias de bajos recursos económicos aumenten sus niveles de deuda adquiriendo créditos educativos o que desistan de una formación profesional. Utilizar los resultados de Saber 11 de manera aislada del contexto al que pertenecen los evaluandos implica asumir tácitamente que están en condiciones similares para presentar la prueba en condiciones equitativas, interpretación que dista de la realidad de la población escolar colombiana caracterizada por su heterogeneidad. Una muestra de este hecho se observó en la comunidad educativa de Bosa, localidad ubicada en el sur occidente de Bogotá D.C. donde de una población escolar cercana a los 6500 estudiantes de grado undécimo de los colegios públicos que presentaron Saber 11 en el año 2017, sólo 45 de ellos alcanzaron el puntaje mínimo requerido para acceder al principal programa de apoyo económico estatal vigente en ese año denominado “Ser Pilo Paga”. Si bién son bastantes los estudios realizados en las cuatro últimas décadas quehan puesto de manifiesto la correlación positiva entre las condiciones socioeconómicas de los estudiantes y el desempeño académico (Velez Ruiz de Miguel, 2001; Vélez, Schiefelbein y Valenzuela, 1994; Arancibia , 1995; Rama, 1991; Cervini, Dari y Quiroz,2014), lo cual no haría extraños los resultados en Saber 11 de los estudiantes de Bosa al concordar con dicho predictor, es interesante que un grupo de estudiantes de esta misma localidad, afectados por un contexto semejante al del resto de la población sí hayan alcanzado buenos puntajes en la prueba. Esta inquietud terminó motivando la realización de la presente investigación
Kushlukiidae Daniltshenko 1968
Creators: name: Laan, Richard Van Der
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Kushlukiidae

description: Family † Kushlukiidae Daniltshenko 1968
 † Kushlukiidae Daniltshenko 1968: 147 (family) † Kushlukia Daniltshenko 1968
description: Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on page 81, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/5557557
Symplectic Surgeries Along Certain Singularities and New Lefschetz Fibrations
Creators: name: Akhmedov, Anar
name: Katzarkov, Ludmil
Publisher: name: arXiv
Year: 2018
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We define a new 4-dimensional symplectic cut and paste operations arising from the generalized star relations $(t_{a_0}t_{a_1}t_{a_2} \cdots t_{a_{2g+1}})^{2g+1} = t_{b_1} t_{b_2}^{g}t_{b_3}$, also known as the trident relations, in the mapping class group $Γ_{g,3}$ of an orientable surface of genus $g\geq1$ with $3$ boundary components. We also construct new families of Lefschetz fibrations by applying the (generalized) star relations and the chain relations to the families of words $(t_{c_1}t_{c_2} \cdots t_{c_{2g-1}}t_{c_{2g}}t_{c_{2g+1}}^2t_{c_{2g}}t_{c_{2g-1}} \cdots t_{c_2}t_{c_1})^{2n} = 1$, $(t_{c_1}t_{c_2} \cdots t_{c_{2g}}t_{c_{2g+1}})^{(2g+2)n} = 1$ and $(t_{c_1}t_{c_2} \cdots t_{c_{2g-1}}t_{c_{2g}})^{2(2g+1)n} = 1$ in the mapping class group $Γ_{g}$ of the closed orientable surface of genus $g \geq 1$ and $n \geq 1$. Furthemore, we show that the total spaces of some of these Lefschetz fibraions are irreducible exotic symplectic $4$-manifolds. Using the degenerate cases of the generalized star relations, we also realize all elliptic Lefschetz fibrations and genus two Lefschetz fibrations over $\mathbb{S}^{2}$ with non-separating vanishing cycles.
description: 23 pages, 5 figures. In this version, we added to examples in Section 5 and added a reference
Ising Dipoles on the Triangular Lattice
Creators: name: Roessler, Ulrich K.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A cluster Monte Carlo method for systems of classical spins with purely dipolar couplings is presented. It is tested and applied for finite arrays of perpendicular Ising dipoles on the triangular lattice. This model is a modification with long-range interactions of the geometrically frustrated Ising antiferromagnet. From measurements of integrated autocorrelation times for energy, magnetization and staggered magnetizations, a high efficiency of the cluster Monte Carlo (MC) algorithm compared to a single-spin-flip algorithm is found. For the investigated model, a finite temperature transition is found which is characterized by a peak in the specific heat and in the staggered susceptibilities.
description: 4 pages, 3 figures. Presented at the 8th Joint MMM-Intermag Conference, San Antonio 2001. To appear in J.Appl.Physics
A New Heuristic for Detecting Non-Hamiltonicity in Cubic Graphs
Creators: name: Filar, Jerzy A
name: Haythorpe, Michael
name: Rossomakhine, Serguei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We analyse a polyhedron which contains the convex hull of all Hamiltonian cycles of a given undirected connected cubic graph. Our constructed polyhedron is defined by polynomially-many linear constraints in polynomially-many continuous (relaxed) variables. Clearly, the emptiness of the constructed polyhedron implies that the graph is non-Hamiltonian. However, whenever a constructed polyhedron is non-empty, the result is inconclusive. Hence, the following natural question arises: if we assume that a non-empty polyhedron implies Hamiltonicity, how frequently is this diagnosis incorrect? We prove that, in the case of bridge graphs, the constructed polyhedron is always empty. We also demonstrate that some non-bridge non-Hamiltonian cubic graphs induce empty polyhedra as well. We compare our approach to the famous Dantzig-Fulkerson-Johnson relaxation of a TSP, and give empirical evidence which suggests that the latter is infeasible if and only if our constructed polyhedron is also empty. By considering special edge cut sets which are present in most cubic graphs, we describe a heuristic approach, built on our constructed polyhedron, for which incorrect diagnoses of non-Hamiltonian graphs as Hamiltonian appear to be very rare. In particular, for cubic graphs containing up to 18 vertices, only four out of 45,982 undirected connected cubic graphs were so misdiagnosed. By constrast, we demonstrate that an equivalent heuristic, when built on the Dantzig-Fulkerson-Johnson relaxation of a TSP, is mostly unsuccessful in identifying additional non-Hamiltonian graphs. These empirical results suggest that polynomial algorithms based on our constructed polyhedron may be able to correctly identify Hamiltonicity of a cubic graph in all but rare cases.
Formfactors in the half-filled Hubbard model
Creators: name: Essler, Fabian H. L.
name: Korepin, Vladimir E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider dynamical spin-spin correlation functions in the one dimensional repulsive half-filled Hubbard model. We propose an exact expression for the two spinon formfactor of spin operators. We use this to derive the two spinon contribution to the dynamical structure factor.
description: 5 pages of revtex, 3 figures
A Generic Taxonomy for Steganography Methods
Creators: name: Wendzel, Steffen
name: Caviglione, Luca
name: Mazurczyk, Wojciech
name: Mileva, Aleksandra
name: Dittmann, Jana
name: Krätzer, Christian
name: Lamshöft, Kevin
name: Vielhauer, Claus
name: Hartmann, Laura
name: Keller, Jörg
name: Neubert, Tom
name: Zillien, Sebastian
Publisher: name: Universität Ulm
Year: 2025
Subjects: subject: DDC 000 / Computer science, information & general works
subject: Cryptography
subject: Steganographie
subject: Mustererkennung

description: A unified understanding of terms is essential for every scientific discipline: steganography is no exception. Being divided into several domains (e.g., network and text steganography), it is crucial to provide a unified terminology as well as a taxonomy that is not limited to few applications or areas. A prime attempt towards a unified understanding of terms was conducted in 2015 with the introduction of a pattern-based taxonomy for network steganography. In 2021, the first work towards a pattern-based taxonomy for all domains of steganography was proposed. However, this initial attempt still faced several shortcomings, e.g., remaining inconsistencies and a lack of patterns for several steganography domains. As the consortium who published the previous studies on steganography patterns, we present the first comprehensive pattern-based taxonomy tailored to fit all known domains of steganography, including smaller and emerging areas, such as filesystem, IoT/CPS, and AI/ML steganography. To make our contribution more effective and promote the use of the taxonomy to advance research, we also provide a unified description method joint with a thorough tutorial on its utilization.
Family-group names of fossil fishes
Creators: name: Laan, Richard Van Der
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy

description: Family †Caprovesposidae Bannikov & Fedotov 1984
 †Caprovesposidae Bannikov & Fedotov 1984: 708 (family) † Caprovesposus Daniltshenko 1960
description: Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on page 81, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/5557557
Mass - metallicity relation and fundamental metallicity relation of metal-poor star-forming galaxies at $0.6
Creators: name: Gao, Yulong
name: Bao, Min
name: Yuan, Qirong
name: Kong, Xu
name: Zou, Hu
name: Zhou, Xu
name: Gu, Yizhou
name: Lin, Zesen
name: Liang, Zhixiong
name: Huang, Chi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The stellar mass-metallicity relation ($M_* - Z$, MZR) indicates that the metallicities of galaxies increase with increasing stellar masses. The fundamental metallicity relation (FMR) suggests that the galaxies with higher star formation rates (SFRs) tend to have lower metallicities for a given stellar mass. To examine whether the MZR and FMR still hold at poorer metallicities and higher redshifts, we compile a sample of 35 star-forming galaxies (SFGs) at $0.6
description: 13 pages, 7 figures; accepted by ApJ
Estrategia de retroalimentación para el mejoramiento del aprendizaje de las matemáticas
Creators: name: Benavides Caicedo, Carolina
Publisher: name: Universidad Externado de Colombia
Year: 2020
Subjects: subject: Evaluación académica - Estudios de caso
subject: Evaluación - Enseñanza
subject: Aprendizaje - Aspectos sociales
subject: Retroalimentación
subject: Aprendizaje
subject: Evaluación formativa
subject: Matemáticas

description: La presente investigación, enmarcada en el énfasis de evaluación de los aprendizajes, describe las características que posee una retroalimentación de las evaluaciones de matemáticas que contribuye al aprendizaje de los estudiantes de grado tercero de la Institución Educativa Distrital Antonio García. La retroalimentación es definida, en el marco de la evaluación formativa como “diálogo, intercambios, demostraciones y formulación de preguntas, ayuda al estudiante a comprender sus modos de aprender, valorar sus procesos y resultados y autorregular su aprendizaje” (Anijovich y González, 2011, p. 24). Esta investigación expone secuencialmente el proceso llevado a cabo por la investigadora con el fin de caracterizar las prácticas retroalimentativas en las clases de matemáticas y a partir de la teoría que soporta la investigación, los resultados obtenidos tanto de la observación no participativa, como de las nociones de retroalimentación del docente, de la percepción de los estudiantes y del diálogo reflexivo realizado entre investigadora y docente, diseñar una estrategia de retroalimentación que le permita a los estudiantes de grado tercero aprender y demostrar estos aprendizajes en las producciones que realicen.