cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Power & Energy Magazine - Volumen 21: Número 3 - Mayo/Junio 2023 - Interrupción del suministro eléctrico: Apagones en los sistemas eléctricos
Creators: Christian Michael Franck
Tobias Engelbrecht
Rajarshi Roychowdhury
Jonathan Woodworth
Zhikang Yuan
Publisher: name: IEEE
Year: 2023

El tema de esta edición son los apagones del sistema eléctrico. Un apagón en el funcionamiento del sistema eléctrico se define como la interrupción a gran escala de la energía en múltiples áreas de servicio. La confiabilidad y la seguridad son los dos criterios más importantes en el diseño, instalación, funcionamiento y planifica-ción de las redes eléctricas. En muchas partes del mundo, el es-fuerzo de generaciones de profesionales de la energía contribuye a mantener la disponibilidad del sistema eléctrico por encima del 99 %. Sin embargo, como ocurre con muchos otros sistemas com-plejos de ingeniería a gran escala, las interrupciones se producen constantemente, la mayoría de ellas por fallos inevitables debidos al deterioro o daños causados por eventos extremos, como tor-mentas de invierno, huracanes, terremotos e incendios forestales.
El tema de esta edición son los apagones del sistema eléctrico. Un apagón en el funcionamiento del sistema eléctrico se define como la interrupción a gran escala de la energía en múltiples áreas de servicio. La confiabilidad y la seguridad son los dos criterios más importantes en el diseño, instalación, funcionamiento y planifica-ción de las redes eléctricas. En muchas partes del mundo, el es-fuerzo de generaciones de profesionales de la energía contribuye a mantener la disponibilidad del sistema eléctrico por encima del 99 %. Sin embargo, como ocurre con muchos otros sistemas com-plejos de ingeniería a gran escala, las interrupciones se producen constantemente, la mayoría de ellas por fallos inevitables debidos al deterioro o daños causados por eventos extremos, como tor-mentas de invierno, huracanes, terremotos e incendios forestales.
A highly polarised radio jet during the 1998 outburst of the black hole transient XTE J1748-288
Creators: name: Brocksopp, Catherine
name: Miller-Jones, James
name: Fender, Rob
name: Stappers, Ben
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: XTE J1748-288 is a black hole X-ray transient which went into outburst in 1998 June. The X-ray lightcurves showed canonical morphologies, with minor variations on the ``Fast Rise Exponential Decay'' profile. The radio source, however, reached an unusually high flux density of over 600 mJy. This high radio flux was accompanied by an exceptional (>20%) fractional linear polarisation, the variability of which was anti-correlated with the flux density. We use this variability to discuss possible depolarisation mechanisms and to predict the underlying behaviour of the (unresolved) core/jet components.
description: Accepted for publication in MNRAS
IEEE Power & Energy Society Brochure
Creators: PES
Publisher: name: IEEE
Year: 2023

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Through PES our members stay-up-to date on the latest advances including: renewable energy system design and integration, smart-grid technologies, electric vehicles, wholesale market design and operation and asset management. This brochure provides an overview of PES member benefits.
CARACTERIZACIÓN FARMACOLÓGICA Y EVIDENCIA CIENTÍFICA DE USO DEL FAVIPIRAVIR PARA PACIENTES CON COVID-19 EN BOLIVIA
Creators: name: Martínez-Pérez, Scarley
name: Castillo-Vladislavic, Thania
name: Morales-Barroso, Nelly
name: Ramirez-Michel, Sandra
name: Arancibia, Gunnar
Publisher: name: Zenodo
Year: 2020
Subjects: Favipiravir, Avifavir

description: El FAVIPIRAVIR es un derivado de pirazinacarboxamida oral y un análogo de guanina aprobado en algunos países para tratar la influenza, el ébola y el norovirus (McKee, Sternberg, Stange, Laufer, & Naujokat, 2020) puede ser encontrado en el mercado bajo las denominaciones de Avifavir, y Avigan Dado que la evidencia publicada para Favipiravir es limitada, se necesita más investigación para concluir su eficacia y seguridad para el tratamiento de pacientes con COVID-19. A la fecha se vienen ejecutando numerosos ensayos clínicos y es probable que se conozcan resultados en los próximos meses, estos hallazgos determinarán en última instancia si se debe usar Favipiravir más ampliamente en este entorno. Se recomienda considerar que, aunque el Favipiravir se desarrolló originalmente para tratar la influenza, el dominio catalítico RdRp (el objetivo principal de Favipiravir) es previsiblemente similar para otros virus de ARN, este dominio catalítico RdRp conservado contribuye a la cobertura de amplio espectro de Favipiravir. Acceda al artículo aquí
Grid Edge 23 Tutorial: Grid-edge Optimization in Active Power Distribution Systems (Slides)
Creators: A. Dubey
Publisher: name: IEEE
Year: 2023

The proliferation of controllable grid-edge resources and the deployment of advanced sensing and control technologies in electric power distribution systems calls for coordinated management of the grid�s resources. This has led to a growing interest in academia and industry alike on optimization methods for the large-scale unbalanced power distribution systems for improved operational efficiency and resilience. This tutorial aims to introduce the state-of-the-art optimization methods applied to unbalanced power distribution systems and their use cases for distribution systems applications. We will start with a discussion on the different models for formulating the distribution optimal power flow (OPF) problem and discuss their trade-offs. We will include hands-on training on modeling the optimization problem using OpenDSS and Matlab/Python for the IEEE test systems. Finally, our industry partner, Opus One Solutions (leader in power systems optimization), will present example application of coordinating grid-edge resources for bulk-energy market using their distribution system Optimization Engine.
The proliferation of controllable grid-edge resources and the deployment of advanced sensing and control technologies in electric power distribution systems calls for coordinated management of the grid�s resources. This has led to a growing interest in academia and industry alike on optimization methods for the large-scale unbalanced power distribution systems for improved operational efficiency and resilience. This tutorial aims to introduce the state-of-the-art optimization methods applied to unbalanced power distribution systems and their use cases for distribution systems applications. We will start with a discussion on the different models for formulating the distribution optimal power flow (OPF) problem and discuss their trade-offs. We will include hands-on training on modeling the optimization problem using OpenDSS and Matlab/Python for the IEEE test systems. Finally, our industry partner, Opus One Solutions (leader in power systems optimization), will present example application of coordinating grid-edge resources for bulk-energy market using their distribution system Optimization Engine.
Thermal desorption of astrophysical relevant ice mixtures of acetaldehyde and acetonitrile from olivine dust
Creators: name: Corazzi, Maria Angela
name: Brucato, John Robert
name: Poggiali, Giovanni
name: Podio, Linda
name: Fedele, Davide
name: Codella, Claudio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Millimeter and centimeter observations are discovering an increasing number of interstellar complex organic molecules (iCOMs) in a large variety of star forming sites, from the earliest stages of star formation to protoplanetary disks and in comets. In this context it is pivotal to understand how the solid phase interactions between iCOMs and grain surfaces influence the thermal desorption process and, therefore, the presence of molecular species in the gas phase. In laboratory, it is possible to simulate the thermal desorption process deriving important parameters such as the desorption temperatures and energies. We report new laboratory results on temperature-programmed desorption (TPD) from olivine dust of astrophysical relevant ice mixtures of water, acetonitrile, and acetaldehyde. We found that in the presence of grains, only a fraction of acetaldehyde and acetonitrile desorbs at about 100 K and 120 K respectively, while 40% of the molecules are retained by fluffy grains of the order of 100 μm up to temperatures of 190-210 K. In contrast with the typical assumption that all molecules are desorbed in regions with temperatures higher than 100 K, this result implies that about 40% of the molecules can survive on the grains enabling the delivery of volatiles towards regions with temperatures as high as 200 K and shifting inwards the position of the snowlines in protoplanetary disks. These studies offer a necessary support to interpret observational data and may help our understanding of iCOMs formation providing an estimate of the fraction of molecules released at various temperatures.
description: Accepted for Publication on Astrophysical Journal
The secret world of shrimps: polarisation vision at its best
Creators: name: Kleinlogel, Sonja
name: White, Andrew G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Optics (physics.optics)
subject: Neurons and Cognition (q-bio.NC)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Animal vision spans a great range of complexity, with systems evolving to detect variations in optical intensity, distribution, colour, and polarisation. Polarisation vision systems studied to date detect one to four channels of linear polarisation, combining them in opponent pairs to provide intensity-independent operation. Circular polarisation vision has never been seen, and is widely believed to play no part in animal vision. Polarisation is fully measured via Stokes' parameters--obtained by combined linear and circular polarisation measurements. Optimal polarisation vision is the ability to see Stokes' parameters: here we show that the crustacean \emph{Gonodactylus smithii} measures the exact components required. This vision provides optimal contrast-enhancement, and precise determination of polarisation with no confusion-states or neutral-points--significant advantages. We emphasise that linear and circular polarisation vision are not different modalities--both are necessary for optimal polarisation vision, regardless of the presence of strongly linear or circularly polarised features in the animal's environment.
description: 10 pages, 6 figures, 2 tables
Algebraic versus topological triangulated categories
Creators: name: Schwede, Stefan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 18E30, 55P42

description: The most commonly known triangulated categories arise from chain complexes in an abelian category by passing to chain homotopy classes or inverting quasi-isomorphisms. Such examples are called `algebraic' because they originate from abelian (or at least additive) categories. Stable homotopy theory produces examples of triangulated categories by quite different means, and in this context the source categories are usually very `non-additive' before passing to homotopy classes of morphisms. Because of their origin I refer to these examples as `topological triangulated categories'. In these extended talk notes I explain some systematic differences between these two kinds of triangulated categories. There are certain properties -- defined entirely in terms of the triangulated structure -- which hold in all algebraic examples, but which fail in some topological ones. These differences are all torsion phenomena, and rationally there is no difference between algebraic and topological triangulated categories.
A study of the fluid-dynamic characteristics of turbulent gas-liquid bubble plumes
Creators: name: Castillejos-Escobar, Alfonso Humberto
Publisher: name: University of British Columbia
Year: 2010

description: The physical behaviour of air-water plumes during upward injection in ladle-shaped vessels has been investigated. The study involved the experimental determination of the spatial distribution of the flow parameters characterizing the behaviour of the gas phase : gas fraction, bubble frequency, mean bubble velocity and pierced length, and the spectrum of the bubble velocity and pierced length. A computer-aided electroresistivity sensor was developed to determine simultaneously the several local parameters. In particular the accurate measurement of the bubble rise velocity and bubble pierced length, under the turbulent conditions studied, necessitated an instrument capable of ensuring that sequential voltage pulses originating at the probe tips corresponded to a single bubble travelling axially and undisturbed between the tip contacts. To achieve this, special electronic instrumentation and software was built to analyse, in real time, the signals produced by the contact of the bubbles with the sensor. The extensive evaluation of the measuring system indicated a high accuracy and reproducibility of the results. The plumes were investigated under various conditions of air flow rate, orifice diameter and bath depth. The measurements indicate that the radial gas fraction profiles, at different axial positions in the plume, exhibit similarity. The reduced gas fraction profiles can be approximated by a single Gaussian distribution for all the conditions studied. Thus a full description of the spatial distribution of gas could be obtained through the correlation of the axial gas fraction and half-value radius with the modified Froude number. The development of flow in gas-liquid plumes is evidenced by changes in the bubble frequency, mean bubble velocity and mean pierced length distributions. In the region close to the injection point, there is a steep change radially in bubble velocity and the motion of the bubbles is strongly affected by the gas injection velocity. Measurements of bubble frequency and pierced length indicate that bubble break-up occurs in this zone before a dynamic process of break-up and coalescence establishes a nearly constant bubble size distribution. In the region of fully developed flow in the plume, the mean bubble velocity and the standard deviation of the bubble velocity spectrum exhibit relatively flat radial profiles and the bubbles affect the flow only through buoyancy. The spectra of bubble pierced length and diameter in this zone can be fitted to a log-normal distribution. Injection conditions have only a slight Influence in determining the size of the bubbles in this region. Close to the bath surface a third zone is identified in which bubble velocity decreases more rapidly as liquid begins to flow radially outward from the plume. A mathematical model proposed in the literature for bubble plumes has been used for comparison with the experimental results.
Grid Edge 23 Tutorial: The Grid Edge is the Future, A Golden Future Date (Slides)
Creators: D. Houseman
Publisher: name: IEEE
Year: 2023

Utilities, customers, third parties, and other stakeholders all see the grid edge as theirs. It is not, rather it belongs to everyone, and everyone needs to cooperate. The grid edge is where the major evolution of the grid to support the transition will happen. Currently the edge is considered to be at the meter with the utility owning what is on the grid side and the customer what is on the customer side. The reality is the grid edge is far more complex, and the thinking needs to change. With building electrification, distributed generation and storage, the need for far more sweeping demand response programs and electrification of transportation the grid edge will need to evolve. To start with metering, measurement, control, investment, maintenance relationships, and more need to change. This course will provide a view into what and why the grid edge needs to evolve and the value of doing so.
Utilities, customers, third parties, and other stakeholders all see the grid edge as theirs. It is not, rather it belongs to everyone, and everyone needs to cooperate. The grid edge is where the major evolution of the grid to support the transition will happen. Currently the edge is considered to be at the meter with the utility owning what is on the grid side and the customer what is on the customer side. The reality is the grid edge is far more complex, and the thinking needs to change. With building electrification, distributed generation and storage, the need for far more sweeping demand response programs and electrification of transportation the grid edge will need to evolve. To start with metering, measurement, control, investment, maintenance relationships, and more need to change. This course will provide a view into what and why the grid edge needs to evolve and the value of doing so.
Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction
Creators: name: Che, Ping
name: Stasinopoulos, Ioannis
name: Mucchietto, Andrea
name: Li, Jianing
name: Berger, Helmuth
name: Bauer, Andreas
name: Pfleiderer, Christian
name: Grundler, Dirk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The Dzyaloshinskii-Moriya interaction (DMI) has an impact on excited spin waves in the chiral magnet Cu$_2$OSeO$_3$ by means of introducing asymmetry on their dispersion relations. The confined eigenmodes of a chiral magnet are hence no longer the conventional standing spin waves. Here we report a combined experimental and micromagnetic modeling study by broadband microwave spectroscopy we observe confined spin waves up to eleventh order in bulk Cu$_2$OSeO$_3$ in the field-polarized state. In micromagnetic simulations we find similarly rich spectra. They indicate the simultaneous excitation of both dipole- and exchange-dominated spin waves with wavelengths down to (47.2 $\pm$ 0.05) nm attributed to the exchange interaction modulation. Our results suggest DMI to be effective to create exchange spin waves in a bulk sample without the challenging nanofabrication and thereby to explore their scattering with noncollinear spin textures.
Fast post-adiabatic waveforms in the time domain: Applications to compact binary coalescences in LIGO and Virgo
Creators: name: Mihaylov, Deyan P.
name: Ossokine, Serguei
name: Buonanno, Alessandra
name: Ghosh, Abhirup
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a computationally efficient (time-domain) multipolar waveform model for quasi-circular spin-aligned compact binary coalescences. The model combines the advantages of the numerical-relativity informed, effective-one-body (EOB) family of models with a post-adiabatic solution of the equations of motion for the inspiral part of the two-body dynamics. We benchmark this model against other state-of-the-art waveforms in terms of efficiency and accuracy. We find a speed-up of one to two orders of magnitude compared to the underlying time-domain EOB model for the total mass range $2 - 100 M_{\odot}$. More specifically, for a low total-mass system, such as a binary neutron star with equal masses of $1.4 M_{\odot}$, like GW170817, the computational speedup is around 100 times; for an event with total mass $\sim 40 M_\odot$ and mass ratio $\sim 3$, like GW190412, the speedup is by a factor of $\sim 20$, while for a binary system of comparable masses and total mass of $\sim 70 M_{\odot}$, like GW150914, it is by a factor of $\sim 10$. We demonstrate that the new model is extremely faithful to the underlying EOB model with unfaithfulness less than $0.01\%$ across the entire applicable region of parameter space. Finally, we present successful applications of this new waveform model to parameter estimation studies and tests of general relativity.
description: 13 pages, 8 figures
Scattering Dynamics of Driven Closed Billiards
Creators: name: Lenz, Florian
name: Diakonos, Fotis K.
name: Schmelcher, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate the classical scattering dynamics of the driven elliptical billiard. Two fundamental scattering mechanisms are identified and employed to understand the rich behavior of the escape rate. A long-time algebraic decay which can be tuned by varying the driving amplitude is established. Pulsed escape rates and decelerated escaping particles are generic properties of the harmonically breathing billiard. This suggests time-dependent billiards as prototype systems to study the nonequilibrium evolution of classical ensembles encountering a multitude of scattering processes off driven targets.
description: 12 pages, 4 figures
Revista Power & Energy - Volumen 21: Número 2 - Marzo/Abril de 2023: Construido para durar
Creators: Christian Michael Franck
Tobias Engelbrecht
Rajarshi Roychowdhury
Jonathan Woodworth
Zhikang Yuan
Publisher: name: IEEE
Year: 2023

La evolución de los sistemas de T & D para satisfacer las demandas
La evolución de los sistemas de T & D para satisfacer las demandas
Disruptive Technological Developments Needed to Scale Up Zero-Emission Aviation Beyond 2035-Slides
Creators: Jonas Kristiansen N�land & Christian Hartmann
Publisher: name: IEEE
Year: 2023

PELS Webinar Slides
Abstract: The presentation will explore the next wave of disruptive technological developments needed to scale up zero-emission aviation beyond 2035. It will include major breakthroughs needed in terms of reducing the voltage level while increasing system-level power density and overall efficiency. Moreover, the webinar will explain how next-generation H2-powered aircraft could take advantage of onboard cryogenic fuels to cool the electrical components, enabling a cryo-electric superconducting drivetrain that could lead to extraordinary performance.
Dephasing of a particle in a dissipative environment
Creators: name: Cohen, Doron
name: Horovitz, Baruch
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The motion of a particle in a ring of length L is influenced by a dirty metal environment whose fluctuations are characterized by a short correlation distance $\ell << L$. We analyze the induced decoherence process, and compare the results with those obtained in the opposing Caldeira-Leggett limit ($\ell >> L$). A proper definition of the dephasing factor that does not depend on a vague semiclassical picture is employed. Some recent Monte-Carlo results about the effect of finite temperatures on "mass renormalization" in this system are illuminated.
description: 18 pages, 2 figures, some textual improvements, to be published in JPA
Testing and application of crushed aggregate for use as a resistive substation surface layer
Creators: Ehsan Azordegan
Bryan Beske
William (Bill) Carman
David Dettenmeier
Peter Dick
John Edlebeck
Joseph Gravelle
David Laurence
Giancarlo Leone
David Lewis
Carl Moller
Stephen Palmer
Caroline Petersen
Eduardo Ramirez Bettoni
Christian Robles
Bill Tocher
Joseph Tynan
Keith Wallace
Don Wengerter
Publisher: name: IEEE
Year: 2023

For the purposes of IEEE Std 80 and touch and step voltage analysis in substation grounding system design, the primary role of substation surface material is to increase series resistance to thereby limit current through the human body. Therefore, with a surface layer of high resistivity material installed higher touch voltages may be permitted and still present the same risk to personnel as lower voltages with no crushed rock. This technical report discusses the factors that impact the electrical resistivity of a crushed aggregate layer, test methods in use, and recommends methods that may be used to test a sample of aggregate in a laboratory as well as in the field. This report aims to provide asset owners and designers with confidence when designing and installing a grounding system to comply with tolerable shock safety targets. This report also provides appropriate specification, installation, and commissioning procedures, as well as ongoing inspection and maintenance procedures that can detect non-conformances.
For the purposes of IEEE Std 80 and touch and step voltage analysis in substation grounding system design, the primary role of substation surface material is to increase series resistance to thereby limit current through the human body. Therefore, with a surface layer of high resistivity material installed higher touch voltages may be permitted and still present the same risk to personnel as lower voltages with no crushed rock. This technical report discusses the factors that impact the electrical resistivity of a crushed aggregate layer, test methods in use, and recommends methods that may be used to test a sample of aggregate in a laboratory as well as in the field. This report aims to provide asset owners and designers with confidence when designing and installing a grounding system to comply with tolerable shock safety targets. This report also provides appropriate specification, installation, and commissioning procedures, as well as ongoing inspection and maintenance procedures that can detect non-conformances.
High-Temperature Superconductivity in Eu0.5K0.5Fe2As2
Creators: name: Jeevan, H. S.
name: Hossain, Z.
name: Kasinathan, Deepa
name: Rosner, Helge
name: Geibel, C.
name: Gegenwart, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Subsequent to our recent report of SDW type transition at 190 K and antiferromagnetic order below 20 K in EuFe2As2, we have studied the effect of K-doping on the SDW transition at high temperature and AF order at low temperature. 50% K doping suppresses the SDW transition and in turn gives rise to high-temperature superconductivity below T_c = 32 K, as observed in the electrical resistivity, AC susceptibility as well as magnetization. A well defined anomaly in the specific heat provides additional evidence for bulk superconductivity.
description: 4 pages, 4 figures
Discrepancies in Determinations of the Ginzburg-Landau Parameter
Creators: name: Girard, TA
name: Figueiredo, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Long-standing discrepancies within determinations of the Ginzburg-Landau parameter $κ$ from supercritical field measurements on superconducting microspheres are reexamined. The discrepancy in tin is shown to result from differing methods of analyses, whereas the discrepancy in indium is a consequence of significantly differing experimental results. The reanalyses however confirms the lower $κ$ determinations to within experimental uncertainties.
description: submitted to Phys. Rev. B
title: ВЛИЯНИЕ ИСПОЛЬЗОВАНИЯ РАЗЛИЧНЫХ ТЕХНОЛОГИЧЕСКИХ  ПРИЕМОВ НА РЫБОПРОДУКТИВНОСТЬ  В КАБАРДИНО-БАЛКАРСКОЙ РЕСПУБЛИКЕ
Creators: name: М.M.
name: А.Б.
name: О.О.
name: М.Р.
Publisher: name: Федеральное государственное бюджетное научное учреждение «Северо-Кавказский федеральный научный аграрный центр»
Year: 2021
Subjects: родники, аквакультура, дебит, технологии, УЗВ, садки.
springs, aquaculture, flow rate, technologies, RAS, cages.

description: В статье исследована территория  Кабардино-Балкарской республики с целью выявления перспективных родниковых речек и рек для развития рыбоводства. Прове-ден химический  анализ воды в исследованных родниках на предмет возможного их использования для выращивания рыб. Даны рекомендации по направлениям их приме-нения в аквакультурном производстве. Установлено, что введение в рыбохозяйствен-ный оборот водоемов с применением современных технологий позволит в течение не-скольких лет получить в условиях КБР дополнительно около 1500–2000 т деликатесной рыбной продукции. Комбинация технологии УЗВ и традиционных технологий повысит конечную эффективность рыбоводства как по объемам, так и по экономическим результатам. При этом садковое рыбоводство целесообразно ориентировать на выращивание ценных видов рыб (осетровые, лососевые), а также на производство пищевой икры.
description: The article deals with the territory exploration of the Kabardino-Balkarian Republic in order to identify promising springs and rivers for the development of fish farming. A chemical analysis of the water in the studied springs was carried out for their possible use for fish breeding. Recommendations of their use in aquaculture production are given. It was estab-lished that the introduction of water bodies into the fishery turnover, with the use of modern technologies, will allow obtaining an additional 1500-2000 tons of best quality fish products in the conditions of the KBR for several years. The combination of RAS technology and traditional technologies will increase the final efficiency of fish farming, both in overall production and economic outcomes. At the same time, it is advisable to focus on the breeding of valuable fish species (sturgeon, salmon), as well as on the production of caviar.
Laser-induced electron emission from Au nanowires: A probe for orthogonal polarizations
Creators: name: Jones, Eric R.
name: Huang, Wayne Cheng-Wei
name: Basnet, Gobind
name: Flanders, Bret N.
name: Batelaan, Herman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Photoelectron field emission, induced by femtosecond laser pulses focused on metallic nanotips, provides spatially coherent and temporally short electron pulses. The properties of the photoelectron yield give insight into both the material properties of the nanostructure and the exciting laser focus. Ultralong nanoribbons, grown as a single crystal attached to a metallic taper, are sources of electron field emission that have not yet been characterized. In this report, photoemission from gold nanoribbon samples is studied and compared to emission from tungsten and gold tips. We observe that the emission from sharp tips generally depends on one transverse component of the exciting laser field, while the emission of a blunted nanoribbon is found to be sensitive to both components. We propose that this property makes photoemission from nanoribbons a candidate for position-sensitive detection of the longitudinal field component in a tightly focused beam.
Unsupervised low-rank representations for speech emotion recognition
Creators: name: Paraskevopoulos, Georgios
name: Tzinis, Efthymios
name: Ellinas, Nikolaos
name: Giannakopoulos, Theodoros
name: Potamianos, Alexandros
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We examine the use of linear and non-linear dimensionality reduction algorithms for extracting low-rank feature representations for speech emotion recognition. Two feature sets are used, one based on low-level descriptors and their aggregations (IS10) and one modeling recurrence dynamics of speech (RQA), as well as their fusion. We report speech emotion recognition (SER) results for learned representations on two databases using different classification methods. Classification with low-dimensional representations yields performance improvement in a variety of settings. This indicates that dimensionality reduction is an effective way to combat the curse of dimensionality for SER. Visualization of features in two dimensions provides insight into discriminatory abilities of reduced feature sets.
description: Published at Interspeech 2019 https://www.isca-speech.org/archive/Interspeech_2019/abstracts/2769.html
The Aspherical Properties of the Energetic Type Ic SN 2002ap as Inferred from its Nebular Spectra
Creators: name: Mazzali, P. A.
name: Kawabata, K. S.
name: Maeda, K.
name: Foley, R. J.
name: Nomoto, K.
name: Deng, J.
name: Suzuki, T.
name: Iye, M.
name: Kashikawa, N.
name: Ohyama, Y.
name: Filippenko, A. V.
name: Qiu, Y.
name: Wei, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The nebular spectra of the broad-lined, SN 1998bw-like Type Ic SN 2002ap are studied by means of synthetic spectra. Two different modelling techniques are employed. In one technique, the SN ejecta are treated as a single zone, while in the other a density and abundance distribution in velocity is used from an explosion model. In both cases, heating caused by gamma-ray and positron deposition is computed (in the latter case using a Monte Carlo technique to describe the propagation of gamma-rays and positrons), as is cooling via forbidden-line emission. The results are compared, and although general agreement is found, the stratified models are shown to reproduce the observed line profiles much more accurately than the single-zone model. The explosion produced ~ 0.1 Msun of 56Ni. The distribution in velocity of the various elements is in agreement with that obtained from the early-time models, which indicated an ejected mass of ~ 2.5 Msun with a kinetic energy of 4 x 10^{51} erg. Nebular spectroscopy confirms that most of the ejected mass (~ 1.2 Msun) was oxygen. The presence of an oxygen-rich inner core, combined with that of 56Ni at high velocities as deduced from early-time models, suggests that the explosion was asymmetric, especially in the inner part.
description: 24 pages, 6 figures, 2 Tables. Accepted by the Astrophysical Journal
Efficient detection of emission line galaxies in the Cl0016+1609 and MACSJ1621.4+3810 supercluster filaments using SITELLE
Creators: name: Edwards, Louise O. V.
name: Durret, Florence
name: Márquez, Isabel
name: Zhang, Kevin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We observe a system of filaments and clusters around Cl0016+1609 and MACSJ1621.4+3810 using the SITELLE Fourier transform spectrograph at the Canada France Hawaii Telescope. For Cl0016+1609 (z=0.546), the observations span an 11.8 Mpc x 4.3 Mpc region along an eastern filament which covers the main cluster core, as well as two 4.3 Mpc x 4.3 Mpc regions which each cover southern subclumps. For MACSJ1621.4+3810 (z= 0.465), 3.9 Mpc x 3.9 Mpc around the main cluster core is covered. We present the frequency and location of the emission line galaxies, their emission line images, and calculate the star formation rates, specific star formation rates and merger statistics. In Cl0016+1609, we find thirteen [OII]~3727 Angstrom emitting galaxies with star formation rates between 0.2 and 14.0 M$_{\odot}$ yr$^{-1}$. 91$^{+3}_{-10}$% are found in regions with moderate local galaxy density, avoiding the dense cluster cores. These galaxies follow the main filament of the superstructure, and are mostly blue and disky, with several showing close companions and merging morphologies. In MACSJ1621.4+3810, we find ten emission line sources. All are blue (100$^{+0}_{-15}$%), with 40$^{+16}_{-12}$% classified as disky and 60$^{+12}_{-16}$% as merging systems. Eight avoid the cluster core (80$^{+7}_{-17}$%), but two (20$^{+17}_{-7}$%) are found near high density regions, including the brightest cluster galaxy (BCG). These observations push the spectroscopic study of galaxies in filaments beyond z~ 0.3 to z~ 0.5. Their efficient confirmation is paramount to their usefulness as more galaxy surveys come online.
description: 19 pages, 12 figures, Accepted for publication in the Astronomical Journal
Panel Session: Data Integration & Simulation Challenges for Power System Operators (slides)
Creators: Saroj Kumar Mahapatra
Jayaprakash Ponraj
Publisher: name: IEEE
Year: 2023

The panel session reviews the challenges, of power system operators, related to avoiding the worst impacts of climate change. How can we get emissions reduced by almost half by 2030 and reach net-zero by 2050?
The panel session reviews the challenges, of power system operators, related to avoiding the worst impacts of climate change. How can we get emissions reduced by almost half by 2030 and reach net-zero by 2050?
A first principles study on organic molecules encapsulated BN nanotubes
Creators: name: He, Wei
name: Li, Zhenyu
name: Yang, Jinlong
name: Hou, J. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic structures of boron nitride nanotubes (BNNTs) doped by organic molecules are investigated with density functional theory. Electrophilic molecule introduces acceptor states in the wide gap of BNNT close to the valence band edge, which makes the doped system a $p$-type semiconductor. However, with typical nucleophilic organic molecules encapsulation, only deep occupied molecular states but no shallow donor states are observed. There is a significant electron transfer from BNNT to electrophilic molecule, while the charge transfer between nucleophilic molecule and BNNT is neglectable. When both electrophilic and nucleophilic molecules are encapsulated in the same BNNT, large charge transfer between the two kinds of molecules occurs. The resulted small energy gap can strongly modify the transport and optical properties of the system.
Felix Jiri Weinberg - Bibliography from FELIX JIRI WEINBERG 2 April 1928 — 5 December 2012 Elected FRS 1983
Creators: name: Dunn-Rankin, D.
Publisher: name: The Royal Society
Year: 2021
Subjects: Applied Physics

description: Felix Weinberg's teenage years coincided with World War II. He spent much of the war in Nazi concentration camps, starting with Terezin in December 1942, Auschwitz in December 1943 and finally Buchenwald, from which he was liberated on 11 April 1945. He joined Imperial College as a research assistant in 1951 and completed his PhD by 1954. He was appointed to a personal chair as professor of combustion physics in 1967, and he stayed at Imperial for his entire career. Weinberg was distinguished for his optical and electrical studies of flames and his pioneering development of innovative combustion methods. He invented a family of powerful optical tools in combustion, using both broad spectrum and laser light sources. His work on electrical diagnostics led to applications of electric fields to control combustion and to improved understanding of ionization and soot formation. He developed novel combustion devices that incorporated distinctive heat exchangers, thereby permitting the ignition and burning of very low calorific fuel–air mixtures. All of these works had a propelling influence on the global evolution of environmentally benign combustion furnaces. His wide-ranging service to academia, industry and scientific societies included visiting scholar appointments at universities around the world, consultancies for petroleum, chemical, aerospace and defence organisations, and active membership on committees and boards of governance for many scientific and professional bodies. He was author, co-author or editor of four books and well over 200 papers in the scientific literature
Following laboratory protocols: Filling in the gaps using protocols.io
Creators: name: Plomp, Esther
Publisher: name: Zenodo
Year: 2019
Subjects: reproducible
protocols
preservation
isotopes
human
teeth
Open Science

description: Laboratory protocols lie at the heart of the study of the chemical composition of human teeth. The isotopes in human teeth are linked to the geographic location of an individual during tooth formation, enabling researchers to examine human mobility in modern and ancient societies. Without proper documentation of the samples, reagents used and all the steps taken to chemically extract the isotopes of interest, we cannot appropriately interpret the information that is locked within a tooth.

Despite the key role that laboratory protocols play in research, the publication of full protocols that can easily be re-used by researchers is rare. A summarised version of the protocol can usually be found in the method section of articles, but this short description leaves out the details that are required to reproduce experiments.

The online platform protocols.io (https://www.protocols.io/) provides the possibility to share the full protocol and administers a Digital Object Identifier (DOI) to the protocol which allows you to claim credit for the method development. Through protocols.io you can create and modify protocols in a structured, detailed and efficient way, saving time and preventing loss of expertise. The platform enables efficient collaboration as you can easily share your protocols with selected individuals or reviewers. The functionalities and services of protocols.io stimulate reproducible research protocols, allowing more reliable interpretations of, for example, the mobility patterns in human societies.
description: {"references": ["E. Plomp et al. (2019), Evaluation of neodymium isotope analysis of human dental enamel as a provenance indicator using 1013 \u03a9 amplifiers (TIMS), https://doi.org/10.1016%2Fj.scijus.2019.02.001", "E. Plomp et al. (2017), TIMS analysis of neodymium isotopes in human tooth enamel using 1013 \u03a9 amplifiers, https://doi.org/10.1039/c7ja00312a", "Kelly Stanford (2019), https://sciencepusheen.tumblr.com/"]}
Testing Lorentz Invariance Violation with WMAP Five Year Data
Creators: name: Kahniashvili, Tina
name: Durrer, Ruth
name: Maravin, Yurii
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider different renormalizable models of Lorentz invariance violation. We show that the limits on birefringence of the propagation of cosmic microwave background photons from the five year data of the Wilkinson microwave anisotropy probe (WMAP) can be translated into a limit of Lorentz symmetry violation. The obtained limits on Lorentz invariance violation are stronger than other published limits. We also cast them in terms of limits on a birefringent effective photo "mass" and on a polarization dependence of the speed of light.
description: 5 pages, references and discussions added, results unchanged, accepted for publications in PRD
Automatic Non-Linear Video Editing Transfer
Creators: name: Frey, Nathan
name: Chi, Peggy
name: Yang, Weilong
name: Essa, Irfan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We propose an automatic approach that extracts editing styles in a source video and applies the edits to matched footage for video creation. Our Computer Vision based techniques considers framing, content type, playback speed, and lighting of each input video segment. By applying a combination of these features, we demonstrate an effective method that automatically transfers the visual and temporal styles from professionally edited videos to unseen raw footage. We evaluated our approach with real-world videos that contained a total of 3872 video shots of a variety of editing styles, including different subjects, camera motions, and lighting. We reported feedback from survey participants who reviewed a set of our results.
description: Published to AI for Content Creation Workshop at CVPR 2021
KALIFORNIYA QIZIL YOMG'IR CHUVALCHANGINING BIOLOGIK AHAMIYATI
Creators: name: Choriyev, Abdimumin
name: Adxamov, Saidvalixon
Publisher: name: Zenodo
Year: 2023

description: Olingan tadqiqotlarda ularning ozuqasiga qarab vazni yuqoridagi malumotlarga qaraganda ortib ketishi yoki kamayib ketishi mumkinligi kuzatildi.. Bu ozuqa kam yoki ko‘pligiga bog‘liq ekanligi aniqlandi. Glyuko‘za miqdori qancha ko‘p bo‘lsa KALIFORNIYA QIZIL YOMG‘IR chuvalchanglari shuncha yaxshi rivojlanishi qayt etildi.
Keynote: Optimal Voltage Ride-Through of IBR-Dominated Power Systems (slides)
Creators: Prof. Bikash Pal
Publisher: name: IEEE
Year: 2023

With the increasing penetration of inverter-based resources (IBRs), disconnecting IBRs from the system �at first sign of trouble� could exacerbate system instability under large voltage disturbances (sag, swell and unbalance).

Several large blackouts or interruption events in relation to the improper operation of IBRs under voltage disturbances have been reported in recent years. Although a consensus has been reached that IBRs should be able to ride through various voltage disturbances while providing dynamic voltage support (DVS) to the grid, it is still not clear how to achieve the optimal DVS.

This talk will share our recent research efforts in improving the DVS performance of IBRs under abnormal voltage conditions. Three critical questions are answered via optimisation.

1) What is the maximum DVS capability of a single IBR?
2) How to implement the maximum DVS without relying on the knowledge of grid model parameters?
3) How do multiple IBRs interact with each other in a network? The optimisation-based methodologies open up an effective way to explore sophisticated control strategies of IBRs under large disturbances, and the research findings complement and even challenge our physical intuition.
With the increasing penetration of inverter-based resources (IBRs), disconnecting IBRs from the system �at first sign of trouble� could exacerbate system instability under large voltage disturbances (sag, swell and unbalance).

Several large blackouts or interruption events in relation to the improper operation of IBRs under voltage disturbances have been reported in recent years. Although a consensus has been reached that IBRs should be able to ride through various voltage disturbances while providing dynamic voltage support (DVS) to the grid, it is still not clear how to achieve the optimal DVS.

This talk will share our recent research efforts in improving the DVS performance of IBRs under abnormal voltage conditions. Three critical questions are answered via optimisation.

1) What is the maximum DVS capability of a single IBR?
2) How to implement the maximum DVS without relying on the knowledge of grid model parameters?
3) How do multiple IBRs interact with each other in a network? The optimisation-based methodologies open up an effective way to explore sophisticated control strategies of IBRs under large disturbances, and the research findings complement and even challenge our physical intuition.