cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
UN VALIDO E INNOVATIVO AIUTO PER LA MEDICINA E LA RICERCA: Le proteine ricombinanti
Creators: name: Adinolfi, Salvatore
name: Oliaro-Bosso, Simonetta
Publisher: name: Zenodo
Year: 2022
Subjects: proteine ricombinanti

description: Ci chiamano PROTEINE RICOMBINANTI. Siamo tante, tutte lì nei frigoriferi di farmacie e di ospedali. Sui nostri boccettini c’è scritto insulina, ormone della crescita, proteina della coagulazione, vaccino proteico anti-Covid, etc.
 PERCHÉ SIAMO LÌ?
 Le nostre gemelle, le proteine presenti in tutte le cellule viventi, sono delle grandi lavoratrici, formate tutte da aminoacidi ma ognuna con una sequenza specifica che le rende uniche. Questa unicità fa sì che ognuna di esse abbia un lavoro ben preciso ed insieme collaborino per far funzionare tutte le cellule viventi. A volte, però, qualcosa si inceppa. Improvvisamente può succedere che l’organismo non riesca più a produrle oppure le produca malfunzionanti. Chi svolgerà così il loro lavoro? Ed ecco che le persone si ammalano e sviluppano malattie gravi: il diabete, ad esempio, nei bambini e negli adulti che non producono la proteina insulina, e che, quindi, non riescono ad utilizzare gli zuccheri per avere energia. Oppure l’emofilia, nelle persone in cui le proteine per la coagulazione del sangue non sono complete; non si forma la crosticina, le ferite non smettono di sanguinare e si hanno emorragie.
 Ecco, allora, la risposta! Noi, proteine ricombinanti, possiamo aiutare le nostre proteine gemelle! Possiamo aiutare le persone malate!
Supplementary document for Influence of defects on femtosecond laser damage resistance of multilayer dielectric gratings - 6268336.pdf
Creators: name: Zhang, Simin
name: Su, Ziyao
name: Menoni, Carmen
name: Chowdhury, Enam
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: subject: 20399 Classical Physics not elsewhere classified
subject: FOS: Physical sciences
subject: 20501 Classical and Physical Optics
subject: Computational Physics
subject: Plasma Physics

description: Information for the MLD grating design and the extended discussion for the laser damage induced by the particle contaminations, nodules, and the cracks.
Configuração de Algoritmos Genéticos Multiobjetivos para Otimização de Projeto de Arquitetura de Linha de Produto
Creators: name: Narcizo Gabriel Freitas Palioto
name: Colanzi, Thelma Elita
Publisher: name: Zenodo
Year: 2020

description: Algoritmos de busca têm sido explorados com sucesso na otimização de projeto de Arquitetura de Linha de Produto de Software (PLA) na abordagem seminal chamada Multi-Objective Approach for Product-Line Architecture Design (MOA4PLA). Tal abordagem produz um conjunto de alternativas de projeto de PLA que melhora os diferentes fatores otimizados. Atualmente, o algoritmo utilizado nesta abordagem é o algoritmo NSGA-II (Non-dominated Sorting Genetic Algorithm II), um algoritmo genético multiobjetivo que otimiza várias propriedades simultaneamente. A otimização do projeto de PLA ocorre por meio da aplicação de operadores de busca em várias gerações de populações de indivíduos formadas por alternativas de projeto de PLA obtidas a partir de um projeto inicial.
 Apesar de resultados experimentais promissores, estudar a melhor combinação de configuração dos parâmetros do algoritmo genético é imprescindível para obter melhores resultados. Esses parâmetros se referem tanto às probabilidades de aplicação dos operadores de busca anteriormente mencionados como ao tamanho da população e ao número de gerações envolvidas no processo de busca.
 Valores de referência para os parâmetros ainda não foram definidos para otimização de projeto de PLA porque este é um tópico de pesquisa incipiente. Nesse contexto, o objetivo deste trabalho é identificar os valores mais adequados para configurar o algoritmo NSGA-II para a otimização de projetos de PLA por meio de um estudo experimental. Este estudo envolveu os seguintes parâmetros de algoritmos genéticos: Tamanho da população, Número de Avaliações de Fitness, Funções Objetivos e Probabilidade de Mutação.
 Uma análise quantitativa baseada no indicador de qualidade hypervolume e em testes estatísticos foi realizada para determinar o valor mais adequado para configurar cada parâmetro do algoritmo.
Accurate Telescope Mount Positioning with MEMS Accelerometers
Creators: name: Mészáros, László
name: Jaskó, Attila
name: Pál, András
name: Csépány, Gergely
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: This paper describes the advantages and challenges of applying microelectromechanical accelerometer systems (MEMS accelerometers) in order to attain precise, accurate and stateless positioning of telescope mounts. This provides a completely independent method from other forms of electronic, optical, mechanical or magnetic feedback or real-time astrometry. Our goal is to reach the sub-arcminute range which is well smaller than the field-of-view of conventional imaging telescope systems. Here we present how this sub-arcminute accuracy can be achieved with very cheap MEMS sensors and we also detail how our procedures can be extended in order to attain even finer measurements. In addition, our paper discusses how can a complete system design be implemented in order to be a part of a telescope control system.
description: Accepted for publication in PASP, 12 pages
Stacking sequence dependence of electronic properties in double-layer graphene heterostructures
Creators: name: Ni, Mei-Yan
name: Wakabayashi, Katsunori
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: First-principles calculation has been performed to investigate the stability and electronic properties of double-layer graphene heterostructure (DLGH). In this system, two graphene layers are separated by hexagonal boron-nitride (h-BN) layers which work as a insulating barrier. Our results show that the stability of the system is determined by the atomistic configurations between graphene and its adjacent h-BN layer. Among different stacking sequences, Ab-stacking is most stable. Since the inserted h-BN layers modulate the on-site energies for carbon atoms of graphene layers, the electronic states of the system can be classified into metallic or semiconducting by the stacking sequence. And the stacking sequence dependence of the energy band structures of DLGHs are well described by the orbital interaction model.
MPEC 2024-R324 : 2024 RF16
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RF16

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Non-Hamiltonian features of a classical pilot-wave dynamics
Creators: name: Labousse, Matthieu
name: Perrard, Stéphane
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Physics (physics.class-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A bouncing droplet on a vibrated bath can couple to the waves it generates, so that it becomes a propagative walker. Its propulsion at constant velocity means that a balance exists between the permanent input of energy provided by the vibration and the dissipation. Here we seek a simple theoretical description of the resulting non-Hamiltonian dynamics with a walker immersed in a harmonic potential well. We demonstrate that the interaction with the recently emitted waves can be modeled by a Rayleigh-type friction. The Rayleigh oscillator has well defined attractors. The convergence toward them and their stability is investigated through an energetic approach and a linear stability analysis. These theoretical results provide a description of the dynamics in excellent agreement with the experimental data. It is thus a basic framework for further investigations of wave-particle interactions when memory effects are included.
description: 10 pages, 6 figures
Investigating Berezinskii-Kosterlitz-Thouless phase transitions in Kagome spin ice by quantifying Monte Carlo process: Distribution of Hamming distances
Creators: name: Su, Wen-Yu
name: Hu, Feng
name: Cheng, Chen
name: Ma, Nvsen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We reinvestigate the phase transitions of the Ising model on the Kagome lattice with antiferromagnetic nearest-neighbor and ferromagnetic next-nearest-neighbor interactions, which has a six-state-clock spin ice ground state and two consecutive Berezinskii-Kosterlitz-Thouless (BKT) phase transitions. Employing the classical Monte Carlo (MC) simulations, the phases are characterized by the magnetic order parameter, and the critical temperatures are obtained by the finite-size scaling of related physical quantities. Moreover, we attempt to gain general information on the phase transitions from the MC process instead of MC results and successfully extract the correct transition points with surprisingly high accuracy. Specifically, we focus on the selected data set of uncorrelated MC configurations and quantify the MC process using the distribution of two-configuration Hamming distances in this small data collection. This distribution is more than a quantity that features different behaviors in different phases but also nicely supports the same BKT scaling form as the order parameter, from which we successfully determine the two BKT transition points with surprisingly high accuracy. We also discuss the connection between the phase transitions and the intrinsic dimension extracted from the Hamming distances, which is widely used in the growing field of machine learning and is reported to be able to detect critical points. Our findings provide a new understanding of the spin ice transitions in the Kagome lattice and can hopefully be used similarly to identify transitions in the quantum system on the same lattice with strong frustrations.
description: 12 figures
Parametric roll oscillations of a hydrodynamic Chaplygin sleigh
Creators: name: Loya, Kartik
name: Tallapragada, Phanindra
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Robotics (cs.RO)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Biomimetic underwater robots use lateral periodic oscillatory motion to propel forward, which is seen in most fishes known as body caudal fin (BCF) propulsion. The lateral oscillatory motion makes slender-bodied fish-like robots roll unstable. Unlike the case of human-engineered aquatic robots, many species of fish can stabilize their roll motion to perturbations arising from the periodic motions of propulsors. To first understand the origin of the roll instability, the objective of this paper is to analyze the parameters affecting the roll-angle stability of an autonomous fish-like underwater swimmer. Eschewing complex models of fluid-structure interaction, we instead consider the roll motion of a nonholonomic system inspired by the Chaplygin sleigh, whose center of mass is above the ground. In past work, the dynamics of a fish-like periodic swimmer have been shown to be similar to that of a Chaplygin sleigh. The Chaplygin sleigh is propelled by periodic torque in the yaw direction. The roll dynamics of the Chaplygin sleigh are linearized and around a nominal limit cycle solution of the planar hydrodynamic Chaplygin sleigh in the reduced velocity space. It is shown that the roll dynamics are then described as a nonhomogeneous Mathieu equation where the periodic yaw motion provides the parametric excitation. We study the added mass effects on the sleigh's linear dynamics and use the Floquet theory to investigate the roll stability due to parametric excitation. We show that fast motions of the model for swimming are frequently associated with roll instability. The paper thus sheds light on the fundamental mechanics that present trade-offs between speed, efficiency, and stability of motion of fish-like robots.
description: 25 pages, 9 figures, submitted to Nonlinear Dynamics journal by Springer
Quantum Kagome Ice
Creators: name: Carrasquilla, Juan
name: Hao, Zhihao
name: Melko, Roger G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Actively shought since the turn of the century, two-dimensional quantum spin liquids (QSLs) are exotic phases of matter where magnetic moments remain disordered even at extremely low temperatures. Despite ongoing searches, QSLs remain elusive, due to a lack of concrete knowledge of the microscopic mechanisms that inhibit magnetic order in real materials. Here, we study a theoretical model for a broad class of frustrated magnetic rare-earth pyrochlore materials called "quantum spin ices". When subject to an external magnetic field along the [111] crystallographic direction, the resulting spin interactions contain a mix of geometric frustration and quantum fluctuations in decoupled two-dimensional kagome planes. Using large-scale quantum Monte Carlo simulations, we identify a simple set of interactions sufficient to promote a groundstate with no magnetic long-range order, and a gap to excitations, consistent with a $Z_2$ spin liquid phase. This suggests a systematic experimental procedure to search for two-dimensional QSLs within the broader class of three-dimensional pyrochlore quantum spin ice materials.
description: 11 pages, 13 figures. Includes supplemental information
Smooth, homogeneous, high-purity Nb3Sn superconducting RF resonant cavity by seed-free electrochemical synthesis
Creators: name: Sun, Zeming
name: Baraissov, Zhaslan
name: Porter, Ryan D.
name: Shpani, Liana
name: Shao, Yu-Tsun
name: Oseroff, Thomas
name: Thompson, Michael O.
name: Muller, David A.
name: Liepe, Matthias U.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: Accelerator Physics (physics.acc-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Workbench-size particle accelerators, enabled by Nb3Sn-based superconducting radio-frequency (SRF) cavities, hold the potential of driving scientific discovery by offering a widely accessible and affordable source of high-energy electrons and X-rays. Thin-film Nb3Sn RF superconductors with high quality factors, high operation temperatures, and high-field potentials are critical for these devices. However, surface roughness, non-stoichiometry, and impurities in Nb3Sn deposited by conventional Sn-vapor diffusion prevent them from reaching their theoretical capabilities. Here we demonstrate a seed-free electrochemical synthesis that pushes the limit of chemical and physical properties in Nb3Sn. Utilization of electrochemical Sn pre-deposits reduces the roughness of converted Nb3Sn by five times compared to typical vapor-diffused Nb3Sn. Quantitative mappings using chemical and atomic probes confirm improved stoichiometry and minimized impurity concentrations in electrochemically synthesized Nb3Sn. We have successfully applied this Nb3Sn to the large-scale 1.3 GHz SRF cavity and demonstrated ultra-low BCS surface resistances at multiple operation temperatures, notably lower than vapor-diffused cavities. Our smooth, homogeneous, high-purity Nb3Sn provides the route toward high efficiency and high fields for SRF applications under helium-free cryogenic operations.
52 Weeks Later: Attitudes Towards COVID-19 Apps for Different Purposes Over Time
Creators: name: Kowalewski, Marvin
name: Utz, Christine
name: Degeling, Martin
name: Schnitzler, Theodor
name: Herbert, Franziska
name: Schaewitz, Leonie
name: Farke, Florian M.
name: Becker, Steffen
name: Dürmuth, Markus
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: The COVID-19 pandemic has prompted countries around the world to introduce smartphone apps to support disease control efforts. Their purposes range from digital contact tracing to quarantine enforcement to vaccination passports, and their effectiveness often depends on widespread adoption. While previous work has identified factors that promote or hinder adoption, it has typically examined data collected at a single point in time or focused exclusively on digital contact tracing apps. In this work, we conduct the first representative study that examines changes in people's attitudes towards COVID-19-related smartphone apps for five different purposes over the first 1.5 years of the pandemic. In three survey rounds conducted between Summer 2020 and Summer 2021 in the United States and Germany, with approximately 1,000 participants per round and country, we investigate people's willingness to use such apps, their perceived utility, and people's attitudes towards them in different stages of the pandemic. Our results indicate that privacy is a consistent concern for participants, even in a public health crisis, and the collection of identity-related data significantly decreases acceptance of COVID-19 apps. Trust in authorities is essential to increase confidence in government-backed apps and foster citizens' willingness to contribute to crisis management. There is a need for continuous communication with app users to emphasize the benefits of health crisis apps both for individuals and society, thus counteracting decreasing willingness to use them and perceived usefulness as the pandemic evolves.
description: 45 pages, 19 figures, 10 tables
Supplementary document for Enhanced THz radiation through thick plasmonic electrode grating photoconductive antenna with tight photocarrier confinement - 6263523.pdf
Creators: name: Ponomarev, Dmitry
name: Lavrukhin, Denis
name: Glinskiy, Igor
name: Yachmenev, Alexander
name: Zenchenko, Nikolay
name: Khabibullin, Rustam
name: Goncharov, Yurii
name: Otsuji, Taiichi
name: Zaytsev, Kirill
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplementary material
21.pdf
Creators: name: BHAT, RAMDAS
Publisher: name: figshare
Year: 2022
Subjects: subject: 111504 Pharmaceutical Sciences
subject: FOS: Clinical medicine
subject: 111599 Pharmacology and Pharmaceutical Sciences not elsewhere classified

description: The Staircase Model (SCM) and Light and Dark Chamber (LDM) in albino rats are used in this study to investigate the possible anxiolytic-like effects of the Hydroalcoholic extract of leaves of Plectranthus scutellarioides (HEPS). The creatures were split up into four groups of six apiece. The HEPS was administered orally in 2 doses of 100 mg/kg and 200 mg/kg to control rats, while positive control animals received diazepam (2 mg/kg) treatment. One hour before the experiment, after anxiety induction, the test sample was administered orally. According to the current study, albino rats in the staircase model experience (P>0.05), considerably less climbing and rearing steps when given HEPS orally at doses of 100 mg/kg and 200 mg/kg. Additionally, in the Light and Dark Model, albino rats spend less time in the dark compared to the vehicle control, in a dose-dependent manner(P>0.05). It was discovered that the HEPS of the dose 200mg/kg body weight was quite similar to that of benzodiazepines (std drug). The HEPS was discovered to have significant anti-anxiety activity in the staircase model and the dark and light model as a result of the findings above.
Alternative Methods of Adjusting for Heteroscedasticity in Wheat Growth Data
Creators: name: Larsen, Greg A.
name: Larsen, Greg A.
Publisher: name: Unknown
Year: 1978
Subjects: Crop Production/Industries
Research Methods/ Statistical Methods

description: Excerpts from the report Introduction: The purpose of this report is to suggest some techniques which are useful in adjusting for heteroscedastic disturbances common to growth data. While all the results pertain specifically to dried wheat head weights, it is hoped that the concepts involved are general enough to be of use with other types of growth data or in non-growth situations. Two basic approaches will be discussed; log transformations and weighted least squares. Several different log transformations will be developed most of which are of the form ln (Ay + B) where y is the dependent variable and A and B are derived constants based on various criteria. The last transformation discussed has four constants to be specified and the log is taken twice. The second approach is to weight the diagonal elements of the variance-covariance matrix of the dependent variable by some appropriate function which creates a homoscedastic disturbance term. A linear function is used which relates the expected value of the dependent variable to the population standard deviation.
MPEC 2024-R325 : 2024 RG16
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RG16

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
RecorDS (Recognizer Diagram Sketch): Um Aplicativo para Extracão de Diagramas UML
Creators: name: Giordano, Douglas
name: Becker, Arthur
name: Silva, João
Publisher: name: Zenodo
Year: 2020

description: Equipes que utilizam práticas de modelagem ágil muitas vezes fazem uso de quadros brancos, por oferecerem um ambiente dinâmico e colaborativo de modelagem. O problema ocorre na geração dos artefatos de software, devido ao fato de que normalmente os esboços feitos em quadros brancos são recriados em um editor UML ou então armazenados em imagens, ocasionando uma desatualização da documentação. Assim, com o objetivo de minimizar essa integração entre esboços feitos em quadros e editores UML, esse artigo tem o viés de apresentar um aplicativo de reconhecimento de esboços de diagramas de classe. Para fins de desenvolvimento desse aplicativo, técnicas de processamento e análise de imagens são utilizados.
Simulation Study of Solar Plasma Eruptions Caused by Interactions between Emerging Flux and Coronal Arcade Fields
Creators: name: Kaneko, T.
name: Yokoyama, T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the triggering mechanisms of plasma eruptions in the solar atmosphere due to interactions between emerging flux and coronal arcade fields by using two-dimensional MHD simulations. We perform parameter surveys with respect to arcade field height, magnetic field strength, and emerging flux location. Our results show that two possible mechanisms exist, and which mechanism is dominant depends mostly on emerging flux location. One mechanism appears when the location of emerging flux is close to the polarity inversion line (PIL) of an arcade field. This mechanism requires reconnection between the emerging flux and the arcade field, as pointed out by previous studies. The other mechanism appears when the location of emerging flux is around the edge of an arcade field. This mechanism does not require reconnection between the emerging flux and the arcade field but does demand reconnection in the arcade field above the PIL. Furthermore, we found that the eruptive condition for this mechanism can be represented by a simple formula.
description: 40 pages, 13 figures, accepted for publication in ApJ
$g$-mode of neutron stars in pseudo-Newtonian gravity
Creators: name: Li, Hong-Bo
name: Gao, Yong
name: Shao, Lijing
name: Xu, Renxin
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The equation of state (EOS) of nuclear dense matter plays a crucial role in many astrophysical phenomena associated with neutron stars (NSs). Fluid oscillations are one of the most fundamental properties therein. NSs support a family of gravity $g$-modes, which are related to buoyancy. We study the gravity $g$-modes caused by composition gradient and density discontinuity in the framework of pseudo-Newtonian gravity. The mode frequencies are calculated in detail and compared with Newtonian and general-relativistic (GR) solutions. We find that the $g$-mode frequencies in one of the pseudo-Newtonian treatments can approximate remarkably well the GR solutions, with relative errors in the order of $1\%$. Our findings suggest that, with much less computational cost, pseudo-Newtonian gravity can be utilized to accurately analyze oscillation of NSs constructed from an EOS with a first-order phase transition between nuclear and quark matter, as well as to provide an excellent approximation of GR effects in core-collapse supernova (CCSN) simulations.
description: 14 pages, 13 figures, 6 tables; accepted by PRD
O uso do Design Thinking em uma empresa multinacional de Tecnologia da Informação
Creators: name: Mattos, Gabriel
name: Pereira, Lauriane
name: Parizi, Rafael
name: Marczak, Sabrina
Publisher: name: Zenodo
Year: 2020

description: Software companies have been using Design Thinking to support software development, fostering the creation of innovative features and products. However, there is not so much knowledge of what matters for the application of Design Thinking being successful. Thus, this study aims to describe how does the adoption of Design Thinking with software development take place in a global information technology company through an interview-based case study with 16 professionals. Our analysis indicates that Design Thinking is used in software products, software improvements, processes, user experience identification and solution discovery. Also, there are perceived benefits and challenges during the Design Thinking activities. As a result, this paper describes the Design Thinking phenomenon in software development, serving as a guide for practitioners on how to set up and implement Design Thinking activities and publishing more academic research.
Gauge-covariant extensions of Killing tensors and conservation laws
Creators: name: van Holten, J. W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In classical and quantum mechanical systems on manifolds with gauge-field fluxes, constants of motion are constructed from gauge-covariant extensions of Killing vectors and tensors. This construction can be carried out using a manifestly covariant procedure, in terms of covariant phase space with a covariant generalization of the Poisson brackets, c.q. quantum commutators. Some examples of this construction are presented.
description: 11 pages, proceedings conference Group30, Gent (B); July 2014
MPEC 2024-R326 : 2024 RH16
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RH16

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Toward a complete description of $b \to u \ell^- \barν$ decays within the Weak Effective Theory
Creators: name: Leljak, Domagoj
name: Melić, Blaženka
name: Novak, Filip
name: Reboud, Méril
name: van Dyk, Danny
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We fit the available data on exclusive semileptonic $b\to u\ell^-\barν$ decays within the Standard Model and in the Weak Effective Theory. Assuming Standard Model dynamics, we find $|V_{ub}| = 3.59^{+0.13}_{-0.12} \times 10^{-3}$. Lifting this assumption, we obtain stringent constraints on the coefficients of the $ub\ellν$ sector of the Weak Effective Theory. Performing a Bayesian model comparison, we find that a beyond the Standard Model interpretation is favoured over a Standard Model interpretation of the available data. We provide a Gaussian mixture model that enables the efficient use of our fit results in subsequent analyses beyond the Standard Model, within and beyond the framework of the Standard Model Effective Field Theory.
description: 17 pages, 2 figures, 2 tables and ancillary material at http://dx.doi.org/10.5281/zenodo.8027015
Meson-exchange currents in quasielastic electron scattering in a generalized superscaling approach
Creators: name: Casale, Paloma R.
name: Amaro, J. E.
name: Barbaro, M. B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a model that incorporates the effect of two-body currents in quasielastic electron-nucleus scattering within the framework of a consistent superscaling formalism. This is achieved by defining an averaged single-nucleon hadronic tensor based on the 1p1h matrix element of the one-body current plus meson-exchange currents (MEC). The consistent treatment of one- and two-body currents in our model enables the calculation of exchange current effects in the kinematical region where the Fermi gas response is zero, but not the scaling function. The effect of MEC is consistently taken into account when extracting the phenomenological scaling function from electron scattering data. With this model, we investigate the effect of MEC on the response functions taking into account the effective mass of the nucleon, and examine the consequences it has on the inclusive $(e,e')$ cross section. We find that 1p1h MEC deplete the quasielastic transverse response, while they not alter significantly the scaling behavior of (e,e') data.
description: 20 pages, 16 figures
Comparing velocity and passive scalar statistics in fluid turbulence at high Schmidt numbers and Reynolds numbers
Creators: name: Buaria, Dhawal
name: Sreenivasan, Katepalli R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Recently, Shete et al. [Phys. Rev. Fluids 7, 024601 (2022)] explored the characteristics of passive scalars in the presence of a uniform mean gradient, mixed by stationary isotropic turbulence. They concluded that at high Reynolds and Schmidt numbers, the presence of both inertial-convective and viscous-convective ranges, renders the statistics of the scalar and velocity fluctuations to behave similarly. However, their data included Schmidt numbers of 0.1, 0.7, 1.0 and 7.0, only the last of which can (at best) be regarded as moderately high. Additionally, they do not consider already available data in the literature at substantially higher Schmidt number of up to 512. By including these data, we demonstrate here that the differences between velocity and scalar statistics show no vanishing trends with increasing Reynolds and Schmidt numbers, and essential differences remain in tact at all Reynolds and Schmidt numbers.
description: accepted and to be published in Physical Review Fluids as a Comment
Rateless Codes for the Multi-Way Relay Channel
Creators: name: Hussain, Iqbal
name: Xiao, Ming
name: Rasmussen, Lars K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider distributed Luby transform (DLT) codes for efficient packet transmission in a multi-way relay network, where the links are modeled as erasure channels. Density evolution is applied for asymptotic performance analysis, and subsequently used in a linear-programming design framework for optimizing the degree distribution at the relay in terms of overhead. Moreover a buffer is introduced at the relay to enable efficient downlink transmission even if packets are lost during uplink transmission. Performance losses in terms of delay and/or erasure rates caused by link erasures during uplink transmission are thus alleviated. The proposed DLT codes provide significant improvements in overhead and decoded erasure rates. Numerical results for finite-length codes follow closely the asymptotic analysis. Our results demonstrate that the proposed buffer-based DLT codes outperform its counterparts for lossy uplink transmission.
description: 4 pages, 03 figures, Accepted in IEEE Wireless Communication Letters
Ajustamento Psicossocial ao Teste de Predisposição Genética para o Cancro: Estudo Exploratório de Preditores Individuais
Creators: name: Magno, Marisa
name: Sales, Célia
name: Silva, Eliana
name: Neves, Maria Carolina
name: Silva, Eunice
name: Silva, João
name: Gomes, Pedro
name: Matos, Paula Mena
Publisher: name: Zenodo
Year: 2022

description: Poster apresentado no 3º ENCONTRO NACIONAL DE JOVENS INVESTIGADORES EM ONCOLOGIA (ENJIO), no dia 24 de Setembro de 2021, no Porto
Stacking disorder in $α$-RuCl$_3$ via x-ray three-dimensional difference pair distribution function analysis
Creators: name: Sears, J.
name: Shen, Y.
name: Krogstad, M. J.
name: Miao, H.
name: Yan, Jiaqiang
name: Kim, Subin
name: He, W.
name: Bozin, E. S.
name: Robinson, I. K.
name: Osborn, R.
name: Rosenkranz, S.
name: Kim, Young-June
name: Dean, M. P. M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The van der Waals layered magnet $α$-RuCl$_3$ offers tantalizing prospects for the realization of Majorana quasiparticles. Efforts to understand this are, however, hampered by inconsistent magnetic and thermal transport properties likely coming from the formation of structural disorder during crystal growth, postgrowth processing, or upon cooling through the first order structural transition. Here, we investigate structural disorder in $α$-RuCl$_3$ using x-ray diffuse scattering and three-dimensional difference pair distribution function (3D-$Δ$PDF) analysis. We develop a quantitative model that describes disorder in $α$-RuCl$_3$ in terms of rotational twinning and intermixing of the high and low-temperature structural layer stacking. This disorder may be important to consider when investigating the detailed magnetic and electronic properties of this widely studied material.
description: 6 pages; 3 figures; accepted in Physical Review B
Real-Space Renormalization Group (RSRG) Approach to Quantum Spin Lattice Systems
Creators: name: Serov, A. S.
name: Koval, G. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The paper describes an explicit variational modification of the standard RSRG method and its application to quantum spin lattice systems. The modified approach is applied to exactly solvable ITF, XX and isotropic Heisenberg models. Better upper bounds for the systems' ground state energy are obtained as compared to the standard RSRG approach.
description: http://www.mff.cuni.cz/veda/konference/wds/proc/proc-contents.php?year=2011#phys
PRISMA 2020 checklist for ‘Assessment of Psychobiotics Efficacy on Patients with Depressive Disorder: A Comprehensive Systematic Review and Meta-Analysis of Randomized Controlled Trials’
Creators: name: Nurkolis, Fahrul
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: 30499 Medicinal and Biomolecular Chemistry not elsewhere classified
subject: FOS: Chemical sciences

description: This PRISMA 2020 checklist for ‘Assessment of Psychobiotics Efficacy on Patients with Depressive Disorder: A Comprehensive Systematic Review and Meta-Analysis of Randomized Controlled Trials’
Exploring causality in braneworld/cutoff holography via holographic scattering
Creators: name: Mori, Takato
name: Yoshida, Beni
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Holography with branes and/or cutoff surfaces presents a promising approach to studying quantum gravity beyond asymptotically anti-de Sitter spacetimes. However, this generalized holography is known to face several inconsistencies, including potential violations of causality and fundamental entropic inequalities. In this work, we address these challenges by investigating the bulk scattering process and its holographic realization. Specifically, we propose that the information on a brane/cutoff surface $Q$ propagates according to the induced light cones originating from a fictitious asymptotic boundary behind $Q$, rather than the conventional ones originating from a point on $Q$. Additionally, we establish the validity of the connected wedge theorem for generalized holography with induced light cones. We also demonstrate that entropic inequalities remain valid within the induced causal diamonds. While the induced light cone seemingly permits superluminal signaling, we argue that this causality violation can be an artifact of state preparation for radially propagating excitations, rather than local operator excitations on $Q$.
description: 41 pages, 16 figures (v1); a minor correction, published version in JHEP (v2)
High-Resolution Imaging in the Visible on Large Ground-Based Telescopes
Creators: name: Mackay, Craig
name: Rebolo, Rafael
name: Crass, Jonathan
name: King, David L.
name: Labadie, Lucas
name: González-Escélera, Víctor
name: Puga, Marta
name: Pérez-Garrido, Antonio
name: López, Roberto
name: Oscoz, Alejandro
name: Pérez-Prieto, Jorge A.
name: Rodríguez-Ramos, Luis F.
name: Velasco, Sergio
name: Villó, Isidro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Lucky Imaging combined with a low order adaptive optics system has given the highest resolution images ever taken in the visible or near infrared of faint astronomical objects. This paper describes a new instrument that has already been deployed on the WHT 4.2m telescope on La Palma, with particular emphasis on the optical design and the predicted system performance. A new design of low order wavefront sensor using photon counting CCD detectors and multi-plane curvature wavefront sensor will allow virtually full sky coverage with faint natural guide stars. With a 2 x 2 array of 1024 x 1024 photon counting EMCCDs, AOLI is the first of the new class of high sensitivity, near diffraction limited imaging systems giving higher resolution in the visible from the ground than hitherto been possible from space.
description: 8 pages, 6 figures, SPIE conference 9147, paper 64, Montreal 2014
Multiple Hamiltonian Structures for Toda-type systems
Creators: name: Damianou, Pantelis A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37J35, 70H06

description: Results on the finite nonperiodic Toda lattice are extended to some generalizations of the system: The relativistic Toda lattice, the generalized Toda lattice associated with simple Lie groups and the full Kostant-Toda lattice. The areas investigated, include master symmetries, recursion operators, higher Poisson brackets, invariants, and group symmetries for the systems. A survey of previous work on the classical Toda lattice is also included.
description: 48 pages, 46 references. arXiv admin note: substantial text overlap with arXiv:nlin/0608018
Effect of orbital relaxation on the band structure of cuprate superconductors and implications for the superconductivity mechanism
Creators: name: Hirsch, J. E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Where the doped holes reside in cuprate superconductors has crucial implications for the understanding of the mechanism responsible for their high temperature superconductivity. It has been generally assumed that doped holes reside in hybridized Cu $d_{x^2-y^2}$ - O $pσ$ orbitals in the $CuO_2$ planes, based on results of density functional band structure calculations. Instead, we propose that doped holes in the cuprates reside in O $pπ$ orbitals in the plane, perpendicular to the $Cu-O$ bond, that are raised to the Fermi energy through local orbital relaxation, that is not taken into account in band structure calculations that place the bands associated with these orbitals well below the Fermi energy. We use a dynamic Hubbard model to incorporate the orbital relaxation degree of freedom and find in exact diagonalization of a small $Cu_4O_4$ cluster that holes will go to the O $pπ$ orbitals for relaxation energies comparable to what is expected from atomic properties of oxygen anions. The bandwidth of this band becomes significantly smaller than predicted by band structure calculations due to the orbital relaxation effect. Within the theory of hole superconductivity the heavy hole carriers in this almost full band will pair and drive the system superconducting through lowering of their quantum kinetic energy.
Adaptação familiar ao risco genético de cancro: Um estudo qualitativo
Creators: name: Silva, Eliana
name: Gomes, Pedro
name: Matos, Paula M.
name: Silva, Eunice R.
name: Silva, João
name: Neves, Maria Carolina
name: Sales, Célia M. D.
Publisher: name: Zenodo
Year: 2021

description: Resumo Introdução: As síndromes de predisposição hereditária para cancro têm sido conceptualizadas como um processo a nível familiar. No entanto, relativamente poucas investigações têm avaliado o seu impacto nos membros da família. Objetivos: O presente estudo pretendeu explorar os processos de adaptação da família às síndromes de predisposição hereditária para cancro no contexto do aconselhamento genético, da gestão de risco e da vigilância a longo prazo. Metodologia: Realizamos entrevistas semi-estruturadas a 13 participantes com uma das seguintes síndromes genéticas: síndrome hereditária do cancro da mama e ovário, síndrome de Lynch, síndrome do cancro gástrico difuso hereditário, ou polipose adenomatosa familiar. A entrevista foi desenvolvida através de uma abordagem participativa com o envolvimento de profissionais de saúde e de indivíduos com síndromes de predisposição hereditária para cancro. A maioria dos participantes era do sexo masculino (n = 7; 53.8%), e tinha entre 22 e 53 anos de idade. As entrevistas foram analisadas com análise temática. Resultados: Os principais temas das entrevistas foram: comunicação acerca do risco genético; alterações nas relações familiares; dinâmicas de suporte familiar e processos de ajustamento interdependente. A família constitui a principal fonte de informação e apoio emocional para lidar com a síndrome de predisposição hereditária para cancro. Os múltiplos processos de adaptação individual e de coping entre os membros da família influenciam o bem-estar emocional e processo de tomada de decisão de cada familiar. Estes processos são influenciados e influenciam a comunicação da família e as reações dos seus membros, com implicações ao nível das relações. Discussão/Conclusões: A dinâmica sistémica e interdependente de adaptação familiar às síndromes de predisposição hereditária para cancro revela a importância de uma prestação de cuidados centrada na família.
$K^-d\rightarrow πΣn$ reactions and structure of the $Λ(1405)$
Creators: name: Ohnishi, Shota
name: Ikeda, Yoichi
name: Hyodo, Tetsuo
name: Hiyama, Emiko
name: Weise, Wolfram
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We report on the first results of a full three-body calculation of the $\bar{K}NN$-$πYN$ amplitude for the $K^-d\rightarrowπΣn$ reaction, and examine how the $Λ(1405)$ resonance manifests itself in the neutron energy distributions of $K^-d\rightarrowπΣn$ reactions. The amplitudes are computed using the $\bar{K}NN$-$πYN$ coupled-channels Alt-Grassberger-Sandhas (AGS) equations. Two types of models are considered for the two-body meson-baryon interactions: an energy-independent interaction and an energy-dependent one, both derived from the leading order chiral SU(3) Lagrangian. These two models have different off-shell properties that cause correspondingly different behaviors in the three-body system. As a remarkable result of this investigation, it is found that the neutron energy spectrum, reflecting the $Λ(1405)$ mass distribution and width, depends quite sensitively on the (energy-dependent or energy-independent) model used. Hence accurate measurements of the $πΣ$ mass distribution have the potential to discriminate between possible mechanisms at work in the formation of the $Λ(1405)$.
description: 5 pages, 4 figures, talk given at 3rd International Workshop on "State of the Art in Nuclear Cluster Physics" (SOTANCP3), held in Yokohama, Japan, May 26-30, 2014
What can lattice DFT teach us about real-space DFT?
Creators: name: Sobrino, Nahual
name: Jacob, David
name: Kurth, Stefan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In this paper we establish a connection between density functional theory (DFT) for lattice models and common real-space DFT. We consider the lattice DFT description of a two-level model subject to generic interactions in Mermin's DFT formulation in the grand canonical ensemble at finite temperature. The case of only density-density and Hund's rule interaction studied in earlier work is shown to be equivalent to an exact-exchange description of DFT in the real-space picture. In addition, we also include the so-called pair-hopping interaction which can be treated analytically and, crucially, leads to non-integer occupations of the Kohn-Sham levels even in the limit of zero temperature. Treating the hydrogen molecule in a minimal basis is shown to be equivalent to our two-level lattice DFT model. By means of the fractional occupations of the KS orbitals (which, in this case, are identical to the many-body ones) we reproduce the results of full configuration interaction, even in the dissociation limit and without breaking the spin symmetry. Beyond the minimal basis, we embed our HOMO-LUMO model into a standard DFT calculation and, again, obtain results in overall good agreement with exact ones without the need of breaking the spin symmetry.
description: 8 pages, 3 figures