cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chaotic Encryption Applied to Optical Ethernet in Industrial Control Systems
Creators: name: Pérez-Resa, Adrián
name: Garcia-Bosque, Miguel
name: Sánchez-Azqueta, Carlos
name: Celma, Santiago
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the past decades, Ethernet has become an alternative technology for the field buses traditionally used in industrial control systems and distributed measurement systems. Among different transmission media in Ethernet standards, optical fiber provides the best bandwidth, excellent immunity to electromagnetic interference, and less signal loses than other wired media. Due to the absence of a standard that provides security at the physical layer of optical Ethernet links, the main motivation of this paper is to propose and implement the necessary modifications to introduce encryption in Ethernet 1000Base-X standard. This has consisted of symmetric streaming encryption of the 8b10b symbols flow at physical coding sublayer level, thanks to a keystream generator based on chaotic algorithm. The overall system has been implemented and tested in an field programmable gate array and Ethernet traffic has been encrypted and transmitted over an optical link. The experimental results show that it is possible to cipher traffic at this level and hide the complete Ethernet traffic pattern from passive eavesdroppers. In addition, no space overhead is introduced in data frames during encryption, achieving the maximum throughput.
Presentation: The Effect of Adding Chemical Insecticides at Various Dosages of Metarhizium Anisopliae on Vegetative Growth of Red Ginger Plants Due to White Grub (Lepidiota Stigma) Attack
Creators: name: Chimayatus Solichah
name: Suryawati, Ami
name: Mofit Eko Poerwanto
Publisher: name: Zenodo
Year: 2022

description: This material has presented on 1st International Conference on Advance Research in Agriculture and Food. October 25, 2022
20-10-2021 Biodigestor. Sistemas de contención para disminución del uso de moléculas tóxicas al medio ambiente
Creators: name: Salinas Jiménez, Alejandra
Publisher: name: Zenodo
Year: 2021
Subjects: reactores; microorganismos; biodigestores; fermentación; temperatura de bioreactores

description: RESUMEN Según la FAO, la agricultura, la ganadería y la deforestación generan la tercera parte de los gases de efecto invernadero a nivel mundial. Gran parte de estas emisiones se deriva de la fermentación del estiércol y del uso de fertilizantes, por ello entre las medidas orientadas a reducir las emisiones de CO2 se encuentra el uso de los biodigestores como fuentes de energía sostenible [1]. Un biodigestor es un contenedor cerrado de forma hermética que contiene residuos orgánicos de origen vegetal o animal, en el que un grupo de microorganismos presentes en los desechos orgánicos producen una reacción conocida como fermentación anaeróbica, de la que se puede obtener energía [1]. Este funciona a través de seis partes principales: una cámara de carga, un reactor, la cámara de descarga, una cubierta de plástico, tubería y una llave de paso. El tiempo requerido para que las bacterias digieran la materia orgánica está directamente relacionado con la temperatura [2]. La digestión anaerobia está caracterizada por la existencia tres fases distintas diferenciadas en el proceso de degradación del substrato interviniendo 5 grandes poblaciones de microorganismos [3]. Por otro lado, existen tres tipos principales de biodigestores, plantas de globo, de domo fijo y de domo flotante [3]. Finalmente es importante mencionar que si bien este sistema presenta grandes ventajas como el aprovechamiento de desechos orgánicos que comúnmente sólo son convertidos en gases contaminantes, también existen algunas desventajas técnicas como el calor necesario para que el proceso ocurra, entre otras [3].
description: {"references": ["s/a. (2019). Descubre todos los detalles acerca del biodigestor. 14/10/2021, de fundacion aquae Sitio web: https://www.fundacionaquae.org/biodigestor/", "IDAE (Instituto para la Diversificaci\u00f3n y Ahorro de la Energ\u00eda) . (2007). \"Biomasa: Digestores anaerobios\" . 14/10/2021, de Instituto para la Diversificaci\u00f3n y Ahorro de la Energ\u00eda Sitio web: https://www.idae.es/sites/default/files/documentos/publicaciones_idae/documentos_10737_biomasa_digestores_anaerobios_a2007_0d62926d.pdf", "Corona Zu\u00f1iga I. . (2007). BIODIGESTORES. 14/10/2021, de UNIVERSIDAD AUTONOMA DEL ESTADO DE HIDALGO del Sitio web: https://repository.uaeh.edu.mx/bitstream/bitstream/handle/123456789/10722/Biodigestores.pdf?sequence=1"]}
Modeling long-range wavelength distortions in quasar absorption echelle spectra
Creators: name: Dumont, Vincent
name: Webb, John K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Spectra observed with the Ultraviolet and Visual Echelle Spectrograph (UVES) on the European Southern Observatory's VLT exhibit long-range wavelength distortions. These distortions impose a systematic error on high-precision measurements of the fine-structure constant, $α$, derived from intervening quasar absorption systems. If the distortion is modelled using a model that is too simplistic, the resulting bias in $Δα/α$ away from the true value can be larger than the statistical uncertainty on the $α$ measurement. If the effect is ignored altogether, the same is true. If the effect is modelled properly, accounting for the way in which final spectra are generally formed from the co-addition of exposures made at several different instrumental settings, the effect can be accurately removed and the correct $Δα/α$ recovered.
description: 8 pages, 7 figures, 3 tables
A derivation of the entropy-based relativistic smoothed particle hydrodynamics by variational principle
Creators: name: Mota, Philipe
name: Chen, Weixian
name: Qian, Wei-Liang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work, a second order smoothed particle hydrodynamics is derived for the study of relativistic heavy ion collisions. The hydrodynamical equation of motion is formulated in terms of the variational principle. In order to describe the fluid of high energy density but of low baryon density, the entropy is taken as the base quantity for the interpolation. The smoothed particle hydrodynamics algorithm employed in this study is of the second order, which guarantees better particle consistency. Furthermore, it is shown that the variational principle preserves the translational invariance of the system, and therefore improves the accuracy of the method. A brief discussion on the potential implications of the model in heavy ion physics is also presented.
description: 10 pages, 1 figure
The metamorphosis of the Type Ib SN 2019yvr: late-time interaction
Creators: name: Ferrari, Lucía
name: Folatelli, Gastón
name: Kuncarayakti, Hanindyo
name: Stritzinger, Maximilian
name: Maeda, Keiichi
name: Bersten, Melina
name: Aguilar, Lili M. Román
name: Sáez, M. Manuela
name: Dessart, Luc
name: Lundqvist, Peter
name: Mazzali, Paolo
name: Nagao, Takashi
name: Ashall, Chris
name: Bose, Subhash
name: Brennan, Seán J.
name: Cai, Yongzhi
name: Handberg, Rasmus
name: Holmbo, Simon
name: Karamehmetoglu, Emir
name: Pastorello, Andrea
name: Reguitti, Andrea
name: Anderson, Joseph
name: Chen, Ting-Wan
name: Galbany, Lluís
name: Gromadzki, Mariusz
name: Gutiérrez, Claudia P.
name: Inserra, Cosimo
name: Kankare, Erkki
name: Bravo, Tomás E. Müller
name: Mattila, Seppo
name: Nicholl, Matt
name: Pignata, Giuliano
name: Sollerman, Jesper
name: Srivastav, Shubham
name: Young, David R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present observational evidence of late-time interaction between the ejecta of the hydrogen-poor Type Ib supernova (SN) 2019yvr and hydrogen-rich circumstellar material (CSM), similar to the Type Ib SN 2014C. A narrow Hα emission line appears simultaneously with a break in the light-curve decline rate at around 80-100 d after explosion. From the interaction delay and the ejecta velocity, under the assumption that the CSM is detached from the progenitor, we estimate the CSM inner radius to be located at ~6.5-9.1 {\times} 10^{15} cm. The Hα emission line persists throughout the nebular phase at least up to +420 d post-explosion, with a full width at half maximum of ~2000 km/s. Assuming a steady mass-loss, the estimated mass-loss rate from the luminosity of the Hα line is ~3-7 {\times} 10^{-5} M_\odot yr^{-1}. From hydrodynamical modelling and analysis of the nebular spectra, we find a progenitor He-core mass of 3-4 M{_\odot}, which would imply an initial mass of 13-15 M{_\odot}. Our result supports the case of a relatively low-mass progenitor possibly in a binary system as opposed to a higher mass single star undergoing a luminous blue variable phase.
description: 8 pages, 5 figures, published in MNRAS
D7.6 Data Management System and documentation
Creators: name: Vitale, Vito
name: Verazzo, Giulio
name: Mazzola, Mauro
Publisher: name: Zenodo
Year: 2021

description: This report presents the main components and functionalities of the Data Management System (DMS) implemented by ARICE. The strategic targets driving this development have been: (i) the need to simplify the original plan to address challenges arising from changes in involved partners during the project; (ii) the need, in a legacy perspective, to adopt technical solutions and schemes sustainable in time, and (iii) to take in to account the last developments, at least at European level, made by organisations that are data aggregators and/or data providers. The last two points are relevant in order to accomplish ARICE project g oals in a very cost -effective way. The use of consolidated software packages in the data management panorama at international level and sustained by large communities (e.g. GEOCAT for GeoNetwork), together with the interaction with EMODnet Physics 1, are th e key pillars ensuring that strategic goals will be achieved.
Lowest lying even-parity $\bar B_s$ mesons: heavy quark spin-flavor symmetry, chiral dynamics, and constituent quark model bare masses
Creators: name: Albaladejo, Miguel
name: Fernandez-Soler, Pedro
name: Nieves, Juan
name: Ortega, Pablo G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The discovery of the $D^\ast_{s0}(2317)$ and $D_{s1}(2460)$ resonances in the charmed-strange meson spectra revealed that formerly successful constituent quark models lose predictability in the vicinity of two-meson thresholds. The emergence of non-negligible effects due to meson loops requires an explicit evaluation of the interplay between $Q\bar q$ and $(Q\bar q)(q\bar q)$ Fock components. In contrast to the $c\bar s$ sector, there is no experimental evidence of $J^P=0^+,1^+$ bottom-strange states yet. Motivated by recent lattice studies, in this work the heavy-quark partners of the $D_{s0}^\ast(2317)$ and $D_{s1}(2460)$ states are analyzed within a heavy meson chiral unitary scheme. As a novelty, the coupling between the constituent quark model P-wave $\bar B_s$ scalar and axial mesons and the $\bar B^{(\ast)}K$ channels is incorporated employing an effective interaction, consistent with heavy quark spin symmetry, constrained by the lattice energy levels.
description: 9 pages, 2 figures, 1 table
03-10-2021 Crecimiento de microorganismos en reactores
Creators: name: Conde Cuautle, Carolina
Publisher: name: Zenodo
Year: 2021
Subjects: reactores; microorganismos; condiciones de reactores; fermentación; crecimiento de microorganismos

description: RESUMEN Tanto microorganismos como células animales se emplean para producir una amplia variedad de productos que van desde la insulina, antibióticos, polímeros y metabolitos de interés, por mencionar solo algunos. El usar microorganismos trae consigo múltiples ventajas como las condiciones de reacción, elevados rendimientos, que puedan desempeñarse como biocatalizadores, fue con la entrada de la tecnología del ADN recombinante, que se amplió el panorama de aplicaciones, ahora muchas proteínas se pueden expresar fácilmente en células huésped, tal es el caso de Escherichia coli y la levadura Saccharomyces cerevisiae que se pueden introducir en una vía metabólica completa para que se produzca un compuesto nuevo y no nativo a un nivel alto [1, 2]. Así mismo, los microorganismos que se utilizan para la producción industrial deben cumplir ciertas características para que tengan un crecimiento óptimo como lo es, que el microorganismos pueda crecer en un medio simple, sin necesidad de requerir muchos factores de crecimiento, que crezca rápidamente, pero con rendimientos adecuados y sin la producción de materiales tóxicos ni otros indeseables, presentar estabilidad genética y que sea susceptible a manipulación genética [3].
description: {"references": ["Barba, A. & Clausell, C.. (2014). Reactores qu\u00edmicos y bioqu\u00edmicos. Castell\u00f3n de la Plana, Espa\u00f1a: Uni\u00f3n de Editoriales Universitarias Espa\u00f1olas.", "Wei-Shou, H.. (2018). An Overview of Bioprocess Technology and Biochemical Engineering. En Engineering Principles in Biotechnology(4-19). NJ, USA: y John Wiley & Sons Ltd", "Okafor, N.. (2007). 4. Industrial Media and the Nutrition of Industrial Organisms. En Modern Industrial Microbiology and Biotechnology(54-76). United States of America: Science Publishers."]}
Fortalecimiento de la comprensión lectora a través de una página web diseñada en WIX, con actividades interactivas en los estudiantes del grado quinto (5°) de la Institución Educativa San José de Sincelejo – Sucre.
Creators: name: Medina Tovar, Flor Azucena
name: Pérez Mendoza, Robert Luis
name: Pérez Mendoza, Roger David
Publisher: name: Universidad de Cartagena
Year: 2023
Subjects: subject: Juegos por Computador
subject: Lectura - Aprendizaje
subject: Lectura - Enseñanza con ayuda de computadores

description: Este proyecto tiene como objeto el fortalecimiento de la comprensión lectora de los estudiantes de grado quinto de la I.E. San José de la ciudad de Sincelejo. Principalmente orientada a mejorar los niveles de comprensión literal, inferencial y crítico de los participantes, por lo cual, se fundamentó en actividades interactivas y multimedia, convirtiéndose en una estrategia idónea que, mediante un estudio cualitativo, centra sus esfuerzos en un estudio de los fenómenos que influyen en la práctica pedagógica del área de castellano. Con resultados que muestran una mejora significativa en las habilidades lectoras y de comprensión de los participantes y siendo un referente para el análisis de las herramientas web en la mejora de las diferentes competencias en estudiantes de primaria a nivel institucional y local.
Fossil magnetic fields in intermediate-mass and massive stars
Creators: name: Alecian, E.
name: Villebrun, F.
name: Grunhut, J.
name: Hussain, G.
name: Neiner, C.
name: Wade, G. A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A small fraction of the population of intermediate-mass and massive stars host strong and stable magnetic fields organised on large scales. These fields are believed to be remnants of star formation. It is however not clear how such fossil fields have been shaped during their formation and subsequent evolution. We report recent and ongoing studies on the magnetic properties of pre-main sequence stars and main sequence binaries, allowing us to make progress in this field.
description: To appear in the proceedings for the Astrofluid conference in honor of Jean-Paul Zahn (Paris, June 2016) ; 11 pages, 2 figures
Three phase equilibria of the methane hydrate in NaCl solutions: A simulation study
Creators: name: Blazquez, S.
name: Vega, C.
name: Conde, M. M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Molecular dynamics simulations have been performed to determine the three-phase coexistence temperature for a methane hydrate system in equilibrium with a NaCl solution and a methane gas phase. The direct coexistence technique is used following two approaches, one where the triple coexistence temperature for a given NaCl concentration is narrow down and another where the concentration at a given temperature is equilibrated. In both approaches the results are consistent within the error bars. All simulations were carried out at 400 bar and the range of concentrations explored extends up to a molality of 4 m. TIP4P/2005 for water molecules and a simple Lennard-Jones interaction site for methane were used to simulate the system. Positive deviations from the Lorentz-Berthelot energetic rule have been applied between methane and water (i.e., increasing the attractive interaction between water and methane). Na$^+$ and Cl$^-$ ions were described by using the Madrid-2019 scaled charge model. The role played by finite size effects in the calculation of the coexistence line was analyzed by studying a system with larger number of molecules at a given NaCl concentration. Overall, our simulations show that upon NaCl addition to the liquid water phase, a shift in the three-phase equilibrium line to lower temperatures is produced as occurs in the ice-NaCl(aq) system. The depression of the three-phase coexistence line obtained at different concentrations is in a very good agreement with the experimental results.
Fracton Topological Order from Nearest-Neighbor Two-Spin Interactions and Dualities
Creators: name: Slagle, Kevin
name: Kim, Yong Baek
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Fracton topological order describes a remarkable phase of matter which can be characterized by fracton excitations with constrained dynamics and a ground state degeneracy that increases exponentially with the length of the system on a three-dimensional torus. However, previous models exhibiting this order require many-spin interactions which may be very difficult to realize in a real material or cold atom system. In this work, we present a more physically realistic model which has the so-called X-cube fracton topological order but only requires nearest-neighbor two-spin interactions. The model lives on a three-dimensional honeycomb-based lattice with one to two spin-1/2 degrees of freedom on each site and a unit cell of 6 sites. The model is constructed from two orthogonal stacks of $Z_2$ topologically ordered Kitaev honeycomb layers, which are coupled together by a two-spin interaction. It is also shown that a four-spin interaction can be included to instead stabilize 3+1D $Z_2$ topological order. We also find dual descriptions of four quantum phase transitions in our model, all of which appear to be discontinuous first order transitions.
description: 15+11 pages, 13 figures
EU Standardisation Booster - D3.2 Lessons learned and service report
Creators: name: Giuffrida, Maria
name: Martin Sanchez, Marga
name: Ferguson, Nicholas
name: Bøgh, Signe Annette
name: Wood, Sultan
Publisher: name: Zenodo
Year: 2024

description: HSbooster.eu, a Horizon Europe-funded initiative, has worked over the past 2.5 years to advance the standardisation capabilities of EU-funded R&I projects by offering a comprehensive suite of support services.

The project employed a phased "learning by doing" approach, continuously refining its services based on feedback from participating projects, experts and External Advisory Group (EAG) members. Automated tools like the Standards Orientation Tool (SOT) and the chatbot Norma provide scalable, self-service options that help projects assess their standardisation readiness and navigate the complex landscape of standardisation. 

Additionally, the project is working on a new Standards Catalogue Search Tool to fetch relevant information about standards useful for R&I projects in different fields. Proactive services, including webinars and one-to-one orientation sessions, offer targeted support and facilitated direct engagement with standardisation experts. These services are particularly valuable for early-stage projects, providing comprehensive introductions to the standardisation landscape and practical guidance. Premium services, such as one-to-one and extended consultancies, deep dive workshops, and CWA support, offer in-depth, personalised assistance for projects with more complex standardisation challenges.

These services help projects achieve standardisation outcomes, enhancing their results and aligning their research with relevant standards. To date, HSbooster.eu has provided over 170 Premium services to over 150 projects, supported the kick-off activities for the future development of CEN Workshop Agreements (CWAs), and facilitated 8 Premium Deep Dive workshops and webinar series. The services will continue to be delivered until the project ends in March 2025. This deliverable offers lessons learned and best practices identified throughout the whole experience, providing concrete examples from the served projects whenever possible. The insights here contribute to the wider framework for future standardisation support initiatives, ensuring that the benefits of HSbooster.eu’s approach are more widely recognised and adopted.
Generalized polarizabilities of the nucleon in baryon chiral perturbation theory
Creators: name: Lensky, Vadim
name: Pascalutsa, Vladimir
name: Vanderhaeghen, Marc
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The nucleon generalized polarizabilities (GPs), probed in virtual Compton scattering (VCS), describe the spatial distribution of the polarization density in a nucleon. They are accessed experimentally via the process of electron-proton bremsstrahlung ($ep\to epγ$) at electron-beam facilities, such as MIT-Bates, CEBAF (Jefferson Lab), and MAMI (Mainz). We present the calculation of the nucleon GPs and VCS observables at next-to-leading order in baryon chiral perturbation theory (B$χ$PT), and confront the results with the empirical information. At this order our results are predictions, in the sense that all the parameters are well-known from elsewhere. Within the relatively large uncertainties of our calculation we find good agreement with the experimental observations of VCS and the empirical extractions of the GPs. We find large discrepancies with previous chiral calculations---all done in heavy-baryon $χ$PT (HB$χ$PT)---and discuss the differences between B$χ$PT and HB$χ$PT responsible for these discrepancies.
description: 25 pages, 11 figures, ReVTeX4, references updated, typos corrected, supplementary material (a Mathematica notebook) added, matches the published version
PI(D) tuning for Flight Control Systems via Incremental Nonlinear Dynamic Inversion
Creators: name: B., Paul Acquatella
name: van Ekeren, Wim
name: Chu, Qi Ping
Publisher: name: arXiv
Year: 2017
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Previous results reported in the robotics literature show the relationship between time-delay control (TDC) and proportional-integral-derivative control (PID). In this paper, we show that incremental nonlinear dynamic inversion (INDI) - more familiar in the aerospace community - are in fact equivalent to TDC. This leads to a meaningful and systematic method for PI(D)-control tuning of robust nonlinear flight control systems via INDI. We considered a reformulation of the plant dynamics inversion which removes effector blending models from the resulting control law, resulting in robust model-free control laws like PI(D)-control.
description: Accepted to IFAC 2017 World Congress, Toulouse, France
Strong convergence for the modified Mann's iteration of $λ$-strict pseudocontraction
Creators: name: Song, Yisheng
name: Wang, Hongjun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 49J40, 47H05, 47H04, 65J15

description: In this paper, for an $λ$-strict pseudocontraction $T$, we prove strong convergence of the modified Mann's iteration defined by $$x_{n+1}=β_{n}u+γ_nx_n+(1-β_{n}-γ_n)[α_{n}Tx_n+(1-α_{n})x_n],$$ where $\{α_{n}\}$, $ \{β_{n}\}$ and $\{γ_n\}$ in $(0,1)$ satisfy: (i) $0 \leq α_{n}\leq \fracλ{K^2}$ with $\liminf\limits_{n\to\infty}α_n(λ-K^2α_n)> 0$; (ii) $\lim\limits_{n\to\infty}β_n= 0$ and $\sum\limits_{n=1}^\inftyβ_n=\infty$; (iii) $\limsup\limits_{n\to\infty}γ_n<1$.Our results unify and improve some existing results.
description: 8 pages, 2014
Neighborhood filters and the decreasing rearrangement
Creators: name: Galiano, Gonzalo
name: Velasco, Julián
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: 68U10

description: Nonlocal filters are simple and powerful techniques for image denoising. In this paper, we give new insights into the analysis of one kind of them, the Neighborhood filter, by using a classical although not very common transformation: the decreasing rearrangement of a function (the image). Independently of the dimension of the image, we reformulate the Neighborhood filter and its iterative variants as an integral operator defined in a one-dimensional space. The simplicity of this formulation allows to perform a detailed analysis of its properties. Among others, we prove that the filter behaves asymptotically as a shock filter combined with a border diffusive term, responsible for the staircaising effect and the loss of contrast.
A Theoretical Framework for Analyzing Coupled Neuronal Networks: Application to the Olfactory System
Creators: name: Barreiro, Andrea K.
name: Gautam, Shree Hari
name: Shew, Woodrow L.
name: Ly, Cheng
Publisher: name: arXiv
Year: 2017
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Determining how synaptic coupling within and between regions is modulated during sensory processing is an important topic in neuroscience. Electrophysiological recordings provide detailed information about neural spiking but have traditionally been confined to a particular region or layer of cortex. Here we develop new theoretical methods to study interactions between and within two brain regions, based on experimental measurements of spiking activity simultaneously recorded from the two regions. By systematically comparing experimentally-obtained spiking statistics to (efficiently computed) model spike rate statistics, we identify regions in model parameter space that are consistent with the experimental data. We apply our new technique to dual micro-electrode array in vivo recordings from two distinct regions: olfactory bulb (OB) and anterior piriform cortex (PC). Our analysis predicts that: i) inhibition within the afferent region (OB) has to be weaker than the inhibition within PC, ii) excitation from PC to OB is generally stronger than excitation from OB to PC, iii) excitation from PC to OB and inhibition within PC have to both be relatively strong compared to presynaptic inputs from OB. These predictions are validated in a spiking neural network model of the OB--PC pathway that satisfies the many constraints from our experimental data. We find when the derived relationships are violated, the spiking statistics no longer satisfy the constraints from the data. In principle this modeling framework can be adapted to other systems and be used to investigate relationships between other neural attributes besides network connection strengths. Thus, this work can serve as a guide to further investigations into the relationships of various neural attributes within and across different regions during sensory processing.
description: Submitted January 2017; Revised May 2017
On a singular perturbation problem arising in the theory of Evolutionary Distributions
Creators: name: Galiano, Gonzalo
name: Cohen, Yosef
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Evolution by Natural Selection is a process by which progeny inherit some properties from their progenitors with small variation. These properties are subject to Natural Selection and are called adaptive traits and carriers of the latter are called phenotypes. The distribution of the density of phenotypes in a population is called Evolutionary Distributions (ED). We analyze mathematical models of the dynamics of a system of ED. Such systems are anisotropic in that diffusion of phenotypes in each population (equation) remains positive in the directions of their own adaptive space and vanishes in the directions of the other's adaptive space. We prove that solutions to such systems exist in a sense weaker than the usual. We develop an algorithm for numerical solutions of such systems. Finally, we conduct numerical experiments---with a model in which populations compete---that allow us to observe salient attributes of a specific system of ED.
description: 15 pages
s+is superconductivity with incipient bands: doping dependence and STM signatures
Creators: name: Boeker, Jakob
name: Volkov, Pavel A.
name: Efetov, Konstantin B.
name: Eremin, Ilya
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by the recent observations of small Fermi energies and comparatively large superconducting gaps, present also on bands not crossing the Fermi energy (incipient bands) in iron-based superconductors, we analyse the doping evolution of superconductivity in a four-band model across the Lifshitz transition including BCS-BEC crossover effects on the shallow bands. Similar to the BCS case we find that with hole doping the phase difference between superconducting order parameters of the hole bands changes from $0$ to $π$ through an intermediate $s+is$ state breaking time-reversal symmetry. The transition however occurs in the region where electron bands are incipient and chemical potential renormalization in the superconducting state leads to a significant broadening of the $s+is$ region. We further present the qualitative features of the $s+is$ state that can be observed in scanning tunnelling microscopy (STM) experiments also taking incipient bands into account.
description: 18 pages, 9 figures
D3.6 Summer School Training lecture recordings
Creators: name: Liberatori, Emiliano
name: Lenz, Josefine
name: Langone, Leonardo
Publisher: name: Zenodo
Year: 2020

description: In the frame of WP3 “Educating a new generation of polar researchers and professionals”, APECS has
 organized the MOSAiC School - A six-week long “summer school” training on the Russian icebreaking
 research vessel Akademic Fedorov, for 20 early career scien tists as part of Task 3.2. This in person
 training included lectures, practical exercises and workshops, as well as fieldwork training on the Arctic
 sea ice. Lectures onboard RV Akademik Fedorov covered all aspects of interdisciplinary research during
 MOSAiC, The Multidisciplinary drifting Observatory for the Study of Arctic Climate, as well as training
 in science communication.
09-07-2022 Las señales de luz roja/roja lejana regulan la actividad del mecanismo de concentración de carbono en las cianobacterias
Creators: name: Cid-Arriaga, Grecia
Publisher: name: Zenodo
Year: 2022
Subjects: cianobacterias; tolerancia a la desecación; actividad fotosintética; carbón inorgánico; luz roja/roja

description: RESUMEN La corteza biológica del suelo está conformada por comunidades criptogámicas que tienen funciones de enriquecimiento de carbono y nitrógeno, retención de agua, fijación de CO2 y prevención de la desertificación. En éstas, las cianobacterias fungen un papel importante dando forma y estabilizando la corteza en la capa superior del suelo. Durante esta investigación se analizó cómo es que las cianobacterias perciben las señales de luz y aumentos en la temperatura para preparase a la desecación en ambientes como Israel, donde están expuestas a constantes ciclos de hidratación / deshidratación. Para evaluar los efectos de diferentes estados de aclimatación del carbono inorgánico (Ci) y la luz roja lejana (FR) sobre la asimilación del carbono inorgánico y la tolerancia a la desecación en condiciones naturales simuladas se utilizó Leptolyngbya ohadii (tolerante a la desecación) y Synechocystis (sensible a la desecación). Los resultados demostraron que la exposición a la luz roja lejana tiene efectos negativos en la actividad fotosintética independientemente de la deshidratación. Sin embargo, en L. ohadii se considera que la reducción en la actividad fotosintética es parte del programa de preaclimatación a la desecación. Por otra parte, los experimentos realizados con las mutantes de Synechocystis Δcph1 y ΔsbtB mostraron que en la ausencia del fitocromo cph1 se vio reducida la afinidad fotosintética de Ci cuando se expuso a la luz FR, mientras que la mutante que carecía de la proteína inhibidora de la captación de Ci perdió la inhibición por la luz FR. Finalmente, en la cianobacterias tolerantes a la desecación la señalización de luz roja/roja lejana se adapta para garantizar el equilibrio metabólico dando como resultado una alta tolerancia a la desecación. Esta charla está basada en el artículo de Oren y colaboradores (2021) [1].
description: {"references": ["Oren, N., Timm, S., Frank, M., Mantovani, O., Murik, O., Hagemann, M. (2021). Red/far-red light signals regulate the activity of the carbon-concentrating mechanism in cyanobacteria. Science Advances, Vol. 7, Issue 34, DOI: 10.1126/sciadv.abg0435."]}
27-07-2021 La amenaza inminente de las bacterias farmacorresistentes
Creators: name: Torres Duarte, Natalia
Publisher: name: Zenodo
Year: 2021
Subjects: antibióticos; resistencia; OMS; bacterias; péptidos antimicrobianos

description: RESUMEN Como contexto, se menciona el significado de la resistencia bacteriana a los antibióticos de acuerdo con la Organización Mundial de la Salud (OMS) [4], por qué surge la necesidad de responder, cuáles son los mecanismos de resistencia y la problemática del uso de antibióticos en la agricultura [3], y por qué esta amenaza no debe pasar desapercibida. Se mencionan algunas estadísticas de defunciones a nivel mundial en 2018 [1] a causa de la resistencia bacteriana a los antibióticos. Además, se presenta lo que actualmente la OMS considera como las bacterias en estado de alerta, ya que se necesitan nuevos medicamentos a la brevedad posible [2, 4, 5]. Se mencionan las posibles soluciones y tratamientos a este problema mundial, profundizando específicamente en el uso de los péptidos antimicrobianos de veneno de alacrán como alternativa [6]. Por último, se tocan 4 puntos importantes para resumir lo que se presentó durante la charla, tanto de la situación actual a nivel mundial como las posibles soluciones y tratamientos.
description: {"references": ["CDC. (2019, 30 diciembre). CDC Global Health - Infographics - Antibiotic Resistance The Global Threat. Antibiotic Resistance The Global Threat. https://www.cdc.gov/globalhealth/infographics/antibiotic-resistance/antibiotic_resistance_global_threat.htm", "Gagneux, S. (2006). The Competitive Cost of Antibiotic Resistance in Mycobacterium tuberculosis. Science, 312(5782), 1944\u20131946. https://doi.org/10.1126/science.1124410", "L\u00f3pez, U. P., & Calvo, M. L. (2019, 7 noviembre). \u00bfQu\u00e9 papel tiene la agricultura en la transmisi\u00f3n de la resistencia a antibi\u00f3ticos? The Conversation. https://theconversation.com/que-papel-tiene-la-agricultura-en-la-transmision-de-la-resistencia-a-antibioticos-126369", "Organizaci\u00f3n Mundial de la Salud. (2020, 31 julio). Resistencia a los antibi\u00f3ticos. Resistencia a los antibi\u00f3ticos. https://www.who.int/es/news-room/fact-sheets/detail/resistencia-a-los-antibi%C3%B3ticos", "Smith T., Wolff K.A., Nguyen L. (2012) Molecular Biology of Drug Resistance in Mycobacterium tuberculosis. In: Pieters J., McKinney J. (eds) Pathogenesis of Mycobacterium tuberculosis and its Interaction with the Host Organism. Current Topics in Microbiology and Immunology, vol 374. Springer, Berlin, Heidelberg. https://doi.org/10.1007/82_2012_279", "Quintero-Hern\u00e1ndez, V., Cesa Luna C., Mu\u00f1oz- Rojas J. P\u00e9ptidos antimicrobianos de alacr\u00e1n. Alianzas y Tendencias. 2017, 2 (2): 1-5.", "Quintero-Hern\u00e1ndez V. La pr\u00f3xima pandemia: Bacterias multirresistentes a antibi\u00f3ticos. Alianzas y Tendencias BUAP [Internet]. 2021;6(21):i\u2013vii. Available from: https://drive.google.com/file/d/1nSjMDFztaM7GpS9d_OAnXU_O-4Wpc-FZ/view"]}
Emergency braking training for motorcyclists: instructors’ preferences and new technologies application in a perception-action task
Creators: name: Huertas-Leyva, Pedro
name: Baldanzini, Niccolò
name: Pierini, Marco
Publisher: name: figshare
Year: 2022
Subjects: subject: 90507 Transport Engineering
subject: FOS: Civil engineering
subject: 91304 Dynamics, Vibration and Vibration Control
subject: FOS: Mechanical engineering
subject: 90204 Automotive Safety Engineering
subject: 130309 Learning Sciences
subject: FOS: Educational sciences

description: This paper was presented on the 54th CIECA Congress a congress entitled "Driver training and testing: finding the balance between mobility and safety through the use of innovative technology, improved curricula and data analysis" held in Naples, Italy June 7th through 10th in the year 2022. https://www.cieca.eu/calendar/1110
Modelo de negocio para la creación de la empresa de comunicaciones
Creators: name: Maldonado Sarmiento, Carolina I.
name: Urruchurtu Rada, Leodith
Publisher: name: Universidad de Cartagena
Year: 2011
Subjects: Centros de recreo, industria de la recreación
Innovaciones tecnológicas
Comunicacionales y organizacionales
Desarrollo económico

description: Tesis (Comunicador Social) -- Universidad de Cartagena. Facultad de Ciencia Sociales y Educación. Programa de Comunicación Social, 2011
description: Crear empresa es el reto que materializa las ideas de negocios e incursionar en las Industrias Creativas y culturales es hoy día un pilar para la nueva alternativa de crecimiento económico en la Región y el País, tanto, que se gestiona a través de la creatividad, imaginación e iniciativa para enfrentar cambios y adaptarse en los procesos globales de avances tecnológicos, comunicacionales y por supuesto organizacionales. En consecuencia, Coco Digital el presente proyecto tuvo como objetivo principal diseñar un Modelo de Negocio con el fin de enfilarse como emprendedores e implementar innovación a las empresas que Coco Digital asesora en los procesos creativos: Comunicacional, Tecnológico y de publicidad. En la ejecución del presente trabajo clasificado de carácter descriptivo se realizaron entrevistas a estudiantes egresados de las tres universidades existentes en la ciudad de Cartagena, tomándolas de base para la recolección de información; además de las obtenidas en documentos, investigaciones y publicaciones con temas relacionados al mundo creativo y cultural donde la Unesco expone estadísticas, el Sena orienta, la incubadora Prana beneficia y los aportes de ciertos autores promueven el diseño de un modelo de negocio. Los resultados de la tesis fueron el modelo de negocio que se presenta como alternativa laboral para los comunicadores recién egresados al tiempo que promueve la inclusión de las TIC en el funcionamiento de pequeñas y medianas empresas. Coco Digital suministra capacitación en aplicaciones que favorecen la actividad empresarial; además elabora estrategias creativas que mejoran el proceso productivo y comercial de una empresa mediante el uso de nuevas herramientas tecnológicas. En el desarrollo del proyecto se concluyó que para la creación de una empresa de comunicación se debe seguir los siguientes pasos: • Concientizar al profesional recién egresado del programa de Comunicación Social de las nuevas oportunidades laborales que trae consigo una revolución tecnológica • Diseñar un modelo de negocio que posibilite el financiamiento del proyecto a socios inversionistas o a convocatorias que otorguen incentivos económicos
Consideraciones científico-prácticas para la reeducación de la resistencia en el fútbol
Creators: name: Raya-González, Javier
Publisher: name: Zenodo
Year: 2021

description: Debido a las características especiales del fútbol, donde priman las acciones de alta intensidad y el tiempo que trascurre entre ellas, el entrenamiento de la resistencia se considera fundamental para alcanzar un rendimiento deportivo óptimo. Esta cuestión adquiere una mayor importancia cuando se trabaja con futbolistas lesionados, donde el objetivo fundamental debe ser, por un lado, minimizar los efectos del desentrenamiento, y por otro, alcanzar un nivel de condición física cercano al que tenía el futbolista antes de sufrir dicha lesión, de manera que se consiga una vuelta a la competición segura, y así reducir la posibilidad de que tenga lugar una recidiva. Para ello, será fundamental que el jugador lesionado reciba diferentes dosis de entrenamiento de resistencia durante su proceso de readaptación físico-deportiva, las cuales deberán ser específicas a sus demandas durante la competición. Además, este reentrenamiento de la resistencia estará influenciado por el tipo de lesión y la estructura dañada, así como por el tiempo de baja que sufrirá el futbolista. En esta línea, será fundamental llevar a cabo una correcta distribución de cargas y contenidos a lo largo la readaptación físico-deportiva, en la que se respeten los principios del entrenamiento durante cada una de las fases propuestas. Por todo esto, el objetivo del presente capítulo es mostrar una propuesta actualizada y específica del proceso de reentrenamiento de la resistencia en el futbolista, haciendo especial hincapié en las fases más avanzadas de dicho proceso, donde el entrenamiento específico cobra una mayor relevancia.
Quantum quenches during inflation
Creators: name: Carrilho, Pedro
name: Ribeiro, Raquel H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a new technique to study fast transitions during inflation, by studying the dynamics of quantum quenches in an $O(N)$ scalar field theory in de Sitter spacetime. We compute the time evolution of the system using a non-perturbative large-$N$ limit approach. We derive the self-consistent mass equation for several physically relevant transitions of the parameters of the theory, in a slow motion approximation. Our computations reveal that the effective mass after the quench evolves in the direction of recovering its value before the quench, but stopping at a different asymptotic value, in which the mass squared is strictly positive. Furthermore, we tentatively find situations in which the effective mass squared can be temporarily negative, thus breaking the $O(N)$ symmetry of the system for a certain time, only to then come back to a positive value, restoring the symmetry. We argue the relevance of our new method in a cosmological scenario.
description: 30 pages, 10 figures. v2: minor changes and details added. Matches version published in PRD
Deterministic particle method approximation of a contact inhibition cross-diffusion problem
Creators: name: Galiano, Gonzalo
name: Selgas, Virginia
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35K55, 35D30, 92D25

description: We use a deterministic particle method to produce numerical approximations to the solutions of an evolution cross-diffusion problem for two populations.
 According to the values of the diffusion parameters related to the intra and inter-population repulsion intensities, the system may be classified in terms of an associated matrix. When the matrix is definite positive, the problem is well posed and the Finite Element approximation produces convergent approximations to the exact solution.
 A particularly important case arises when the matrix is only positive semi-definite and the initial data are segregated: the contact inhibition problem. In this case, the solutions may be discontinuous and hence the (conforming) Finite Element approximation may exhibit instabilities in the neighborhood of the discontinuity.
 In this article we deduce the particle method approximation to the general cross-diffusion problem and apply it to the contact inhibition problem. We then provide some numerical experiments comparing the results produced by the Finite Element and the particle method discretizations.
description: 13 pages
Experimental signatures of the mixed axial-gravitational anomaly in the Weyl semimetal NbP
Creators: name: Gooth, Johannes
name: Niemann, Anna Corinna
name: Meng, Tobias
name: Grushin, Adolfo G.
name: Landsteiner, Karl
name: Gotsmann, Bernd
name: Menges, Fabian
name: Schmidt, Marcus
name: Shekhar, Chandra
name: Sueß, Vicky
name: Huehne, Ruben
name: Rellinghaus, Bernd
name: Felser, Claudia
name: Yan, Binghai
name: Nielsch, Kornelius
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Weyl semimetals are materials where electrons behave effectively as a kind of massless relativistic particles known asWeyl fermions. These particles occur in two flavours, or chiralities, and are subject to quantum anomalies, the breaking of a conservation law by quantum fluctuations. For instance, the number of Weyl fermions of each chirality is not independently conserved in parallel electric and magnetic field, a phenomenon known as the chiral anomaly. In addition, an underlying curved spacetime provides a distinct contribution to a chiral imbalance, an effect known as the mixed axial-gravitational anomaly, which remains experimentally elusive. However, the presence of a mixed gauge-gravitational anomaly has recently been tied to thermoelectrical transport in a magnetic field, even in flat spacetime, opening the door to experimentally probe such type of anomalies in Weyl semimetals. Using a temperature gradient, we experimentally observe a positive longitudinal magnetothermoelectric conductance (PMTC) in the Weyl semimetal NbP for collinear temperature gradients and magnetic fields (DT || B) that vanishes in the ultra quantum limit. This observation is consistent with the presence of a mixed axial-gravitational anomaly. Our work provides clear experimental evidence for the existence of a mixed axial-gravitational anomaly of Weyl fermions, an outstanding theoretical concept that has so far eluded experimental detection.