cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Plasmon Lifetime in K: A Case Study of Correlated Electrons in Solids Amenable to Ab Initio Theory
Creators: name: Ku, Wei
name: Eguiluz, Adolfo G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: On the basis of a new ab initio, all-electron response scheme, formulated within time-dependent density-functional theory, we solve the puzzle posed by the anomalous dispersion of the plasmon linewidth in K. The key damping mechanism is shown to be decay into particle-hole pairs involving empty states of d-symmetry. While the effect of many-particle correlations is small, the correlations built into the "final-state" -d-bands play an important, and novel, role ---which is related to the phase-space complexity associated with these flat bands. Our case study of plasmon lifetime in K illustrates the importance of ab initio paradigms for the study of excitations in correlated-electron systems.
description: 12 pages, 4 figures, for html browsing see http://web.utk.edu/~weiku
Une architecture cognitive et affective orient{é}e interaction
Creators: name: Pellier, Damien
name: Adam, Carole
name: Johal, Wafa
name: Fiorino, Humbert
name: Pesty, Sylvie
Publisher: name: arXiv
Year: 2018
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper, we present CAIO, a Cognitive and Affective Interaction-Oriented architecture for social human-robot interactions (HRI), allowing robots to reason on mental states (including emotions), and to act physically, emotionally and verbally. We also present a short scenario and implementation on a Nao robot.
description: in French
SIMULATeQCD: A simple multi-GPU lattice code for QCD calculations
Creators: name: Mazur, Lukas
name: Bollweg, Dennis
name: Clarke, David A.
name: Altenkort, Luis
name: Kaczmarek, Olaf
name: Larsen, Rasmus
name: Shu, Hai-Tao
name: Goswami, Jishnu
name: Scior, Philipp
name: Sandmeyer, Hauke
name: Neumann, Marius
name: Dick, Henrik
name: Ali, Sajid
name: Kim, Jangho
name: Schmidt, Christian
name: Petreczky, Peter
name: Mukherjee, Swagato
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The rise of exascale supercomputers has fueled competition among GPU vendors, driving lattice QCD developers to write code that supports multiple APIs. Moreover, new developments in algorithms and physics research require frequent updates to existing software. These challenges have to be balanced against constantly changing personnel. At the same time, there is a wide range of applications for HISQ fermions in QCD studies. This situation encourages the development of software featuring a HISQ action that is flexible, high-performing, open source, easy to use, and easy to adapt. In this technical paper, we explain the design strategy, provide implementation details, list available algorithms and modules, and show key performance indicators for SIMULATeQCD, a simple multi-GPU lattice code for large-scale QCD calculations, mainly developed and used by the HotQCD collaboration. The code is publicly available on GitHub.
description: 17 pages, 7 figures
Particle dynamics and ergodicity-breaking in twisted-bilayer optical lattices
Creators: name: Paul, Ganesh C.
name: Recher, Patrik
name: Santos, Luis
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent experiments have realized a twisted bilayer-like optical potential for ultra-cold atoms, which in contrast to solid-state set ups may allow for an arbitrary ratio between the inter- and intra-layer couplings. For commensurate Moiré twistings a large-enough inter-layer coupling results in particle transport dominated by channel formation. For incommensurate twistings, the interlayer coupling acts as an effective disorder strength. Whereas for weak couplings the whole spectrum remains ergodic, at a critical value part of the eigenspectrum transitions into multifractal states. A similar transition may be observed as well as a function of an energy bias between the two layers. Our study reveals atoms in optical twisted-bilayer lattices as an interesting new platform for the study of ergodicity breaking and multifractality.
Evaluation of configurational entropy of a model liquid from computer simulations
Creators: name: Sastry, Srikanth
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Computer simulations have been employed in recent years to evaluate the configurational entropy changes in model glass-forming liquids. We consider two methods, both of which involve the calculation of the `intra-basin' entropy as a means for obtaining the configurational entropy. The first method involves the evaluation of the intra-basin entropy from the vibrational frequencies of inherent structures, by making a harmonic approximation of the local potential energy topography. The second method employs simulations that confine the liquid within a localized region of configuration space by the imposition of constraints; apart from the choice of the constraints, no further assumptions are made. We compare the configurational entropies estimated for a model liquid (binary mixture of particles interacting {\it via} the Lennard-Jones potential) for a range of temperatures, at fixed density.
description: 10 pages, 5 figures, Proceedings of "Unifying Concepts in Glass Physics" Trieste 1999 (to appear in J. Phys. Cond. Mat.)
Half-life measurements of $^{212}$Po with thorium-loaded liquid scintillator
Creators: name: Belli, P.
name: Bernabei, R.
name: Boiko, R. S.
name: Danevich, F. A.
name: Di Marco, A.
name: Incicchitti, A.
name: Kasperovych, D. V.
name: Cappella, F.
name: Caracciolo, V.
name: Kobychev, V. V.
name: Polischuk, O. G.
name: Sokur, N. V.
name: Tretyak, V. I.
name: Cerulli, R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Precise measurement of half-life of $^{212}$Po (one of the daughter nuclides in radioactive chain of $^{232}$Th) was realized by means of liquid scintillator based on toluene doped by complex of thorium and trioctylphosphine oxide with concentration of Th $\sim0.1$ mass %. Fast photomultiplier tube and high frequency oscilloscope were used to acquire the scintillation signals waveforms. The algorithms were developed to find pairs of $^{212}$Bi beta-decays and subsequent $^{212}$Po alpha-decays, to calculate time differences between the events in the pair, and to build $^{212}$Bi beta-decay and $^{212}$Po alpha-decay energy spectra. Preliminary the $^{212}$Po half-life is $T_{1/2} = (294.8 \pm 1.9)$ ns. The experiment is in progress aiming at reduction of the statistical and systematic uncertainties.
description: 7 pages, in Ukrainian, 7 figures
tamizaje cardiopatias.docx
Creators: name: Molina, Nataly
name: Rocha, Lila
name: Lozada, Adriana
name: Pedroza, Jose Rubiano
Publisher: name: figshare
Year: 2019
Subjects: subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine

description: Estudio de series de casos prospectivo se llevó a cabo desde agosto a 16 del año 2018 en una institución de alta complejidad en la Ciudad de Cúcuta, Norte de Santander,en el cual se tomó oximetría de pulso a recién nacidos a término (>37 y ≤ 41 semanas de gestación) asintomáticos en el quinto piso del HUEM con el objetivo de detectar hipoxemia; para esto usamos un diagrama de flujo recomendado por las directrices actuales y avalado por la Academia Americana de Pediatría, el Colegio Americano de Cardiología y la Asociación Americana del Corazón para interpretar los hallazgos de la oximetría de pulso en una institución de alta complejidad. 
A stacked search for spatial coincidences between IceCube neutrinos and radio pulsars
Creators: name: Pasumarti, Vibhavasu
name: Desai, Shantanu
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We carry out a stacked search for spatial coincidences between all the known radio pulsars and TeV neutrinos from the IceCube 10 year (2008-2018) muon track data, as a followup to our previous work on searching for spatial coincidences with individual pulsars. We consider three different weighting schemes to stack the contributions from each pulsar. We do not find a statistically significant excess using this method. We report the 95\% c.l. neutrino flux upper limit as a function of the neutrino energy. We have also made our analysis codes publicly available.
description: 10 pages, 11 figures. Accepted for publication in JCAP
Additional file 19: of Genome-wide association analysis of nutrient traits in the oyster Crassostrea gigas: genetic effect and interaction network
Creators: name: Meng, Jie
name: Song, Kai
name: Li, Chunyan
name: Liu, Sheng
name: Shi, Ruihui
name: Li, Busu
name: Wang, Ting
name: Li, Ao
name: Que, Huayong
name: Li, Li
name: Zhang, Guofan
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Figure S10 Genome-wide association study of Asp (A), His (B), Leu (C), Cys (D), and Met (E) content. The first section of each panel shows the Manhattan plot of traits. The negative log10-transformed P-values from the genome-wide scan are plotted against position on each of the 10 chromosomes. Red horizontal dashed line indicates the genome-wide significance threshold. Second part exhibits the 0.1-Mb region on each side of the peak SNP and its position is indicated by a vertical red line with red triangle. The bottom of each panel shows the annotated genes of the 200-kb region. Significant SNP that surpassed the threshold is indicated by red plots and peak SNP is indicated by purple plots. The dotted lines with arrows represent the traits related to the peak SNP. Gene is indicated by black boxes. If the significant SNP was located in the gene, the gene name is highlighted in red bold font and the coding region of the gene was indicated by black vertical lines. (DOCX 768 kb)
Une approche totalement instanciée pour la planification HTN
Creators: name: Ramoul, Abdeldjalil
name: Pellier, Damien
name: Fiorino, Humbert
name: Pesty, Sylvie
Publisher: name: arXiv
Year: 2018
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Many planning techniques have been developed to allow autonomous systems to act and make decisions based on their perceptions of the environment. Among these techniques, HTN ({\it Hierarchical Task Network}) planning is one of the most used in practice. Unlike classical approaches of planning. HTN operates by decomposing task into sub-tasks until each of these sub-tasks can be achieved an action. This hierarchical representation provide a richer representation of planning problems and allows to better guide the plan search and provides more knowledge to the underlying algorithms. In this paper, we propose a new approach of HTN planning in which, as in conventional planning, we instantiate all planning operators before starting the search process. This approach has proven its effectiveness in classical planning and is necessary for the development of effective heuristics and encoding planning problems in other formalism such as CSP or SAT. The instantiation is actually used by most modern planners but has never been applied in an HTN based planning framework. We present in this article a generic instantiation algorithm which implements many simplification techniques to reduce the process complexity inspired from those used in classical planning. Finally we present some results obtained from an experimentation on a range of problems used in the international planning competitions with a modified version of SHOP planner using fully instantiated problems.
description: in French, Journ\'ees Francophones de Planification de D\'ecision et d'Apprentissage, 2016
Lithium-Beryllium-Boron Evolution: From Meneguzzi, Audouze and Reeves 1971 Up to Now
Creators: name: Casse, M.
name: Vangioni-Flam, E.
name: Audouze, J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the main sources of LiBeB production and show that a primary mechanism is at work in the early Galaxy involving both ejection and acceleration of He, C and O at moderate energy, which by nuclear interaction with H and He produce light isotopes. The precise measurement of the Be abundance at [Fe/H] = -3.3 and of $^6Li$ in halo stars find an explanation in this framework. Thus, the preservation of $^6Li$ in the atmosphere of metal poor stars implied, points toward the fact the Spite plateau reflects the primordial value of Li. Consequently, it can be used as a baryodensitometer.
description: 6 pages, no figure, invited talk, to be published in World Scientific, Proceedings of the conference "Cosmic Evolution" in the honor of Jean Audouze and James W. Truran, held at the Institut d'Astrophysique de Paris, France
Impact of K16A and K28A mutation on the structure and dynamics of amyloid-β42 peptide in Alzheimer’s disease: Key insights from molecular dynamics simulations†
Creators: name: Suniba Shuaib
name: Rajneet Kaur Saini
name: Dr. Deepti Goyal
name: Dr. Bhupesh Goyal
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Computational Biology

description: The aggregation of amyloid-β42 (Aβ42) peptide into toxic oligomers and fibrils is a key step in the Alzheimer disease pathogenesis. The recent studies highlighted that lysine residues (K16 and K28) play a critical role in the Aβ42 self-assembly and are the target of entities like molecular tweezer, CLR01. The studies reveal that lysine to alanine mutation significantly affect Aβ oligomerization, toxicity and aggregation process. However, the molecular mechanism behind reduced Aβ toxicity on K16A and K28A mutation remain elusive. In this regard, molecular dynamics simulations were performed in the present study to get insights into the effect of K16A and K28A mutation in Aβ42 self-assembly. The molecular dynamics simulations highlighted that K16A and K28A mutation in the aggregation-prone region, i.e., central hydrophobic core (KLVFF, 16–20) and bend region (D23–K28), cause major structural changes in the Aβ42 monomer. The secondary structure analysis highlight that modulation of aggregation in K16A and K28A is linked to the increase in the overall helix content and a concomitant decrease in the β–sheet content of Aβ42 monomer. The short-range tertiary contacts between central hydrophobic core and C-terminal region were relatively reduced in K16A and K28A as compare to wild type (wt) Aβ42. The mechanistic insights from the study will be beneficial for the design and development of novel inhibitors that will bind and block the interactions, mediated by lysine residues specifically, critical for the Aβ42 self-assembly in Alzheimer disease. The molecular mechanism behind modulation of amyloid-β42 (Aβ42) self-assembly on K16A and K28A mutation has been investigated using molecular dynamics (MD) simulations. MD simulations reveal that reduced aggregation in K16A and K28A is linked to the increase in the overall helix content and a concomitant decrease in the β–sheet content, particularly at the C–terminal region, of Aβ42.
Quantum Information Capsule in Multiple-Qudit Systems and Continuous-Variable Systems
Creators: name: Yamaguchi, Koji
name: Hotta, Masahiro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Quantum correlations in an entangled many-body system are capable of storing information. Even when the information is injected by a local unitary operation to the system, the entanglement delocalizes it. In a recent study on multiple-qubit systems, it is shown that a virtual qubit defined in the correlation space plays a role of perfect storage of delocalized information, which is called a quantum information capsule (QIC). In order to enhance the capacity of quantum information storage, it is crucial to formulate the cases for multiple-qudit systems and continuous-variable (CV) systems. We analytically prove that it is possible to construct a QIC for general write operations of the systems. It turns out that the extension to quantum field theory is achievable. For Gaussian states, we explicitly construct a QIC for shift write operations. We analyze the time-evolution of QIC in a CV system to demonstrate the diffusion of information in entangled pure states.
description: 27 pages, 9 figures. A new section is added
PRINCIPAIS ABORDAGENS TERAPÊUTICAS PARA A PANCREATITE AGUDA: UMA REVISÃO DE LITERATURA
Creators: name: Costa, Bruna Luiza da Silva
name: Oliveira, Nayandra Freitas Inácio de
name: Morais, Mayra Dayanne Passos
name: Carvalho, Ana Laura Gomes de
name: Ferreira, Iwry Hamuraby Souza
name: Fernandes, Luiz Fernando Araújo Guimarães
name: Castro, Guilherme Marinelli Bonilha de
name: Pessoa, Tályta Freitas
name: Ferreira, Maria Clara Leal
name: Costa, Jefferson Rodrigo Oliveira da
Publisher: name: Zenodo
Year: 2024
Subjects: Terapêutica
Inflamação
Diagnóstico

description: Introdução: A pancreatite aguda (PA) é uma condição médica caracterizada pela inflamação súbita do pâncreas. Essa inflamação, pode variar de leve a potencialmente fatal, dependendo da gravidade do caso e das complicações associadas. Há várias causas para a PA, dentre elas estão o consumo excessivo de álcool, calculose biliar, medicações, infecções, trauma abdominal e condições genéticas. Com isso, obter um diagnóstico precoce e um tratamento adequado é essencial para prevenir complicações graves, como a insuficiência de órgãos e até mesmo a morte. Objetivo: Esse estudo busca destacar as principais abordagens terapêuticas utilizadas em pacientes com um quadro de pancreatite aguda. Metodologia: Trata-se de uma revisão integrativa da literatura, realizada por meio da Biblioteca Virtual de Saúde (BVS) nas bases de dados LILACS, MEDLINE e IBECS. Foram encontrados 266 artigos, sendo selecionados 10, através do cruzamento simultâneo entre os descritores “Pancreatitis” e “Therapeutics”. Quanto aos critérios de inclusão, introduziram-se artigos com texto completo, escritos na língua portuguesa e/ou inglesa e publicados entre 2019 e 2024. Resultados e Discussão: Diante da análise dos artigos selecionados, determinou-se que tratar a causa base é o principal meio de tratamento da pancreatite aguda, associado a medidas de suporte para o quadro agudo como hidratação, analgesia e monitoramento do paciente. Dentre os distúrbios de base da PA, destacam-se o alcoolismo excessivo e crônico e a litíase biliar. Além dessas causas, também foi citado, porém em menor relevância, a hipertrigliceridemia. Ainda foi elencado, no entanto de forma pontual, o uso de anticorpos monoclonais, os quais possuem alto potencial para a terapêutica contra doenças inflamatórias agudas, como a PA, entretanto se faz necessário mais estudos sobre o assunto. Conclusão: A pancreatite aguda é uma doença inflamatória súbita e por isso seu tratamento consiste em solucionar a patologia de base, motivo causador da agudização, e realizar um tratamento de suporte para o quadro agudo. Dentre as patologias de base, destacam-se o consumo crônico e excessivo de álcool e a calculose biliar, tendo também citações envolvendo a hipertrigliceridemia, no entanto é menos frequente. Outros tratamentos foram elencados, porém necessitam de mais evidências cientificas para sua solidificação.
Periodic triangulations of $\mathbb{Z}^n$
Creators: name: Sikirić, Mathieu Dutour
name: Garber, Alexey
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: We consider in this work triangulations of $\mathbb{Z}^n$ that are periodic along $\mathbb{Z}^n$. They generalize the triangulations obtained from Delaunay tessellations of lattices. Other important property is the regularity and central-symmetry property of triangulations. Full enumeration for dimension at most $4$ is obtained. In dimension $5$ several new phenomena happen: there are centrally-symmetric triangulations that are not Delaunay, there are non-regular triangulations (it could happen in dimension $4$) and a given simplex has a priori an infinity of possible adjacent simplices. We found $950$ periodic triangulations in dimension $5$ but finiteness is unknown.
K2-290: a warm Jupiter and a mini-Neptune in a triple-star system
Creators: name: Hjorth, M.
name: Justesen, A. B.
name: Hirano, T.
name: Albrecht, S.
name: Gandolfi, D.
name: Dai, F.
name: Alonso, R.
name: Barragán, O.
name: Esposito, M.
name: Kuzuhara, M.
name: Lam, K. W. F.
name: Livingston, J. H.
name: Montanes-Rodriguez, P.
name: Narita, N.
name: Nowak, G.
name: Prieto-Arranz, J.
name: Redfield, S.
name: Rodler, F.
name: Van Eylen, V.
name: Winn, J. N.
name: Antoniciello, G.
name: Cabrera, J.
name: Cochran, W. D.
name: Csizmadia, Sz.
name: de Leon, J.
name: Deeg, H.
name: Eigmüller, Ph.
name: Endl, M.
name: Erikson, A.
name: Fridlund, M.
name: Grziwa, S.
name: Guenther, E.
name: Hatzes, A. P.
name: Heeren, P.
name: Hidalgo, D.
name: Korth, J.
name: Luque, R.
name: Nespral, D.
name: Palle, E.
name: Pätzold, M.
name: Persson, C. M.
name: Rauer, H.
name: Smith, A. M. S.
name: Trifonov, T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the discovery of two transiting planets orbiting K2-290 (EPIC 249624646), a bright (V=11.11) late F-type star residing in a triple-star system. It was observed during Campaign 15 of the K2 mission, and in order to confirm and characterise the system, follow-up spectroscopy and AO imaging were carried out using the FIES, HARPS, HARPS-N, and IRCS instruments. From AO imaging and Gaia data we identify two M-dwarf companions at a separation of $113 \pm 2$ AU and $2467_{-155}^{+177}$ AU. From radial velocities, K2 photometry, and stellar characterisation of the host star, we find the inner planet to be a mini-Neptune with a radius of $3.06 \pm 0.16 R_{\oplus}$ and an orbital period of $P = 9.2$ days. The radius of the mini-Neptune suggests that the planet is located above the radius valley, and with an incident flux of $F\sim 400 F_{\oplus}$, it lies safely outside the super-Earth desert. The outer warm Jupiter has a mass of $0.774\pm 0.047 M_{\rm J}$ and a radius of $1.006\pm 0.050R_{\rm J}$, and orbits the host star every 48.4 days on an orbit with an eccentricity $e<0.241$. Its mild eccentricity and mini-Neptune sibling suggest that the warm Jupiter originates from in situ formation or disk migration.
description: 16 pages, 8 figures, accepted for publication in MNRAS. Updated to accepted version (including K2 name)
On the Origin of the FeK$α$ Line in the Seyfert 2 Galaxy NGC 7172
Creators: name: Dadina, M.
name: Bassani, L.
name: Cappi, M.
name: Palumbo, G. G. C.
name: Piro, L.
name: Guainazzi, M.
name: Malaguti, G.
name: Di Cocco, G.
name: Trifoglio, M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Seyfert 2 Galaxy NGC 7172 was observed twice by BeppoSAX narrow field instruments approximately one year apart. As found in previous observations, the source is variable on short time scales (hours) by a factor of $\sim$30%, confirming the presence of a type 1 nucleus at the center. A strong flux variability (by a factor of 2) on a longer time scale was observed between the two observations. Indeed, in November 1997, the lowest flux ever recorded was detected by BeppoSAX. The broad band spectra obtained with the BeppoSAX narrow field instruments show marginal evidence of a reflection component. This structure could explain the very flat spectra previously observed in the 2-10 keV band. An FeK$α$ line was also detected in both observations. The line intensity appears to remain almost constant between the two observations even if the associated large errors cannot exclude some variability. In order to understand the problem of the origin of the line, data from previous observations, performed with other satellites, were also used. The scenario favored is one where the line is produced at a distance of approximatively 8 light years from the continuum source region, rather than having its origin in the accretion disk. In the framework of the standard unified models for AGN, this suggests that its origin is located in the molecular torus.
description: 9 pages, 11 figures, accepted for publication on A&A
Adjacency-based, Non-intrusive Reduced-order Modeling for Fluid-Structure Interactions
Creators: name: Gkimisis, Leonidas
name: Richter, Thomas
name: Benner, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Non-intrusive model reduction is a promising solution to system dynamics prediction, especially in cases where data are collected from experimental campaigns or proprietary software simulations. In this work, we present a method for non-intrusive model reduction applied to Fluid-Structure Interaction (FSI) problems. The approach is based on the a priori known sparsity of the full-order system operators, which is dictated by grid adjacency information. In order to enforce this type of sparsity, we solve a local, regularized least-squares problem for each degree of freedom on a grid, considering only the training data from adjacent degrees of freedom, thus making computation and storage of the inferred full-order operators feasible. After constructing the non-intrusive, sparse full-order model, Proper Orthogonal Decomposition (POD) is used for its projection to a reduced dimension subspace and thus the construction of a reduced-order model (ROM). The methodology is applied to the challenging Hron-Turek benchmark FSI3, for Re = 200. A physics-informed, non-intrusive ROM is constructed to predict the two-way coupled dynamics of a solid with a deformable, slender tail, subject to an incompressible, laminar flow. Results considering the accuracy and predictive capabilities of the inferred reduced models are discussed.
Commercial apple orchards in poultry free-range areas - Pomares comerciais de macieiras em áreas de criação de galinhas ao ar livre
Creators: name: Bestman, Monique
name: Timmermans, Bart
Publisher: name: Zenodo
Year: 2017
Subjects: animal welfare
silvopastoral systems
tree management
fruit trees
organic farming
animal husbandry
bem-estar animal
sistemas silvopastoris
gestão arbórea
fruteiras
agricultura biológica
produção biológica
pecuária

description: Tradução de leaflet do projeto AGFORWARD - Uma área para criação de galinhas ao ar livre contribui para o bem-estar dos animais. No entanto, as galinhas preferem áreas com abrigo proporcionado por árvores, arbustos ou estruturas artificiais. Uma exploração com 10000 galinhas necessita de uma área de 4 ha para os animais se deslocarem, e plantar uma área tão grande é um investimento substancial. Ao instalar árvores de fruto comerciais consegue-se um fluxo de receita considerável. Cada espécie fruteira tem necessidades particulares e algumas necessitam de um investimento adicional. Por exemplo, as cerejeiras necessitam de rede de proteção contra aves. Este folheto explica os requisitos necessários à incorporação de macieiras num sistema de criação de galinhas ao ar livre.
Atmospheric Lepton Fluxes via Two-Dimensional Matrix Cascade Equations
Creators: name: Kozynets, Tetiana
name: Fedynitch, Anatoli
name: Koskinen, D. Jason
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The atmospheric lepton fluxes play a crucial role in many particle and astroparticle physics experiments, e.g. in establishing the neutrino signal and the muon background for neutrino oscillation measurements, or the atmospheric background for astrophysical neutrino searches. The Matrix Cascade Equations (MCEq) code is a numerical tool used to model the atmospheric lepton fluxes by solving a system of coupled differential equations for particle production, interaction, and decay at extremely low computational costs. Previously, the MCEq framework only accommodated longitudinal development of air showers, an approximation that works well for neutrino and muon fluxes at high energies (O(10 GeV) and above). However, for accurate calculations of atmospheric lepton angular distributions at lower energies, the lateral component of hadronic cascades becomes significant, necessitating three-dimensional calculation schemes. We introduce "2D MCEq", an efficient numerical approach for combined longitudinal and angular evolution of air showers that retains the low computational complexity. The accuracy of the "2D MCEq" is affirmed by its benchmark comparison with the standard Monte Carlo code CORSIKA. This study paves the way for efficient three-dimensional calculations of atmospheric neutrino fluxes.
description: 25 pages, 17 figures
The 1D Relativistic Doppler Formula is an Incorrect Approximation in Precise Radial Velocity Work
Creators: name: Wright, Jason T.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Stellar Doppler velocimetry determines a star's radial velocity $v_r$ via measurement of a redshift, $z$. At precisions below 10 m s$^{-1}$ conversion between the two quantities is complex, and care must be taken to properly account for the effects of relativity. One particular aspect of the problem that bears repeating is that the one-dimensional version of the relativistic Doppler formula, which does not distinguish between the motion of the source and the observer, is incorrect in this context, and indeed does not even provide the correct coefficient for variations in the second-order terms involving $β$. Nonetheless, it is often useful to report a redshift in the more familiar units of velocity without a rigorous calculation, and much code already exists that does this. In these cases it is important to clearly document which formula is being used, and I recommend simply (and explicitly) using the approximation $v_r \approx cz$. This choice is trivially inverted, does not misrepresent the degree of relativistic rigor that has been applied in translating between redshift and radial velocity, and is, I believe, the most commonly followed convention in astronomy and cosmology. I also briefly discuss the differences between the Wright & Eastman barycentric correction procedure and the Lindegren & Dravins barycentric radial velocity measure.
description: 2 pages v2. reflects revisions from editorial process v3. includes doi and journal reference
Vesicles in solutions of hard rods
Creators: name: Groh, B.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The surface free energy of ideal hard rods near curved hard surfaces is determined to second order in curvature for surfaces of general shape. In accordance with previous results for spherical and cylindrical surfaces it is found that this quantity is non-analytical when one of the principal curvatures changes signs. This prohibits writing it in the common Helfrich form. It is shown that the non-analytical terms are the same for any aspect ratio of the rods. These results are used to find the equilibrium shape of vesicles immersed in solutions of rod-like (colloidal) particles. The presence of the particles induces a change in the equilibrium shape and to a shift of the prolate-oblate transition in the vesicle phase diagram, which are calculated within the framework of the spontaneous curvature model. As a consequence of the special form of the energy contribution due to the rods these changes cannot be accounted for by a simple rescaling of the elastic constants of the vesicle as for solutions of spherical colloids or polymers.
description: 11 pages, 7 figures, submitted to Phys. Rev. E
Additional file 5 of Anaplasma phagocytophilum in Marmota himalayana
Creators: name: Duan, Ran
name: Lv, Dongyue
name: Fan, Rong
name: Fu, Guoming
name: Mu, Hui
name: Xi, Jinxiao
name: Lu, Xinmin
name: Chun, Hua
name: Hua, Jun
name: He, Zhaokai
name: Qin, Shuai
name: Huang, Yanyan
name: Xiao, Meng
name: Yang, Jinchuan
name: Jing, Huaiqi
name: Wang, Xin
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 5: Table S3. Characteristics of 13 A. phagocytophilum strains compared in this study.
Chiral spin liquid phase in an optical lattice at mean-field level
Creators: name: Yang, Jian
name: Liu, Xiong-Jun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study an optical Raman square lattice with $\mathrm{U}(1)$ synthetic gauge flux to show chiral spin liquid (CSL) phase for cold atoms based on slave-rotor theory and spinon mean-field theory, respectively. An effective U($1$) gauge flux generated by Raman potentials plays a major role in realizing the CSL phase. By using slave-rotor techniques we find CSL phase at intermediate on-site Fermi Hubbard interacting regime. For the strong interacting regime we derive an effective spin model including up to the four spin interactions. By spinon mean-field analysis it is shown that CSL phase is stabilized in the case of strong magnetic frustration. The two mean-field approximation methods give consistent phase diagrams and provide qualitative numerical evidence of the CSL phase.
description: The experimental scheme is improved, and discussions are revised according to referees' reports
Variability and polarization in the inner jet of 3C395
Creators: name: Lara, L.
name: Alberdi, A.
name: Marcaide, J. M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new results on the parsec-scale jet of the quasar 3C395, derived from VLBI polarization sensitive observations made in 1995.91 and 1998.50 at 8.4, 15.4 and 22.2 GHz. The observations show a complex one-sided jet extending up to 20 mas, with a projected magnetic field essentially aligned with the radio jet. The emission is strongly dominated, in total intensity and polarization, by the core and the inner jet region (of ~3 mas length). We have studied the details of this dominant region finding clear structural variations during this ~2.5 years period, in contrast with the apparent quietness of the jet structure inferred from lower resolution VLBI observations. We observe the ejection of a new component from the core and variations in the degree of polarization of the inner jet components. We estimate a high Faraday Rotation Measure close to the core, with a strong decrease along the inner jet.
description: 7 pages, 4 figures, A&A in press
A Complexity-Efficient High Resolution Propagation Parameter Estimation Algorithm for Ultra-Wideband Large-Scale Uniform Circular Array
Creators: name: Cai, Xuesong
name: Fan, Wei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Millimeter wave (mm-wave) communication with large-scale antenna array configuration is seen as the key enabler of the next generation communication systems. Accurate knowledge of the mm-wave propagation channels is fundamental and essential. In this contribution, a novel complexity-efficient high resolution parameter estimation (HRPE) algorithm is proposed for the mm-wave channel with large-scale uniform circular array (UCA) applied. The proposed algorithm is able to obtain the high-resolution estimation results of the spherical channel propagation parameters. The prior channel information in the delay domain, i.e., the delay trajectories of individual propagation paths observed across the array elements, is exploited, by combining the high-resolution estimation principle and the phase mode excitation technique. Fast initializations, effective interference cancellations and reduced searching spaces achieved by the proposed schemes significantly decrease the algorithm complexity. Furthermore, the channel spatial non-stationarity in path gain across the array elements is considered for the first time in the literature for propagation parameter estimation, which is beneficial to obtain more realistic results as well as to decrease the complexity. A mm-wave measurement campaign at the frequency band of 28-30 GHz using a large-scale UCA is exploited to demonstrate and validate the proposed HRPE algorithm.
description: Single column, 28 pages. In review process with IEEE Transactions on Communications
Restoration of Macroscopic Isotropy on $(d+1)$-Simplex Fractal Conductor Networks
Creators: name: Jafarizadeh, M. A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Restoration of macroscopic isotropy has been investigated in (d+1)-simplex fractal conductor networks via exact real space renormalization group transformations. Using some theorems of fixed point theory, it has been shown very rigoroursly that the macroscopic conductivity becomes isotropic for large scales and anisotropy vanishes with a scaling exponent which is computed exactly for arbitrary values of d and decimation numbers b=2,3,4 and 5.
description: 27 Pages, 3 Figures
(H, Li)Br and LiOH Solvation Bonding Dynamics: Molecular Nonbond Interactions and Solute Extraordinary Capabilities
Creators: name: Sun, Chang Q
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We resolved the hydrogen bond transition from the mode of ordinary water to its hydration in terms of its phonon stiffness (vibration frequency shift), order of fluctuation (line width), and number fraction (phonon abundance) upon chage injection by solvation.
description: 20 pages
Synthesis of PNGase-resistant N-glycopeptide containing an α-anomeric glycosidic linkage
Creators: name: Dao, Yuankun
name: Dong, Weidong
name: Zhang, Jun
name: Dong, Suwei
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: N-glycans in eukaryotic proteins are commonly attached to asparagine residues via β-N-glycosidic linkages, which are susceptible to glycosidases, such as PNGase. Here we report the preparation of α-N-glycosylated peptides based on the solid-phase peptide synthesis strategy using an α-N-GlcNAc-containing asparagine building block, and a transglycosylation reaction of oligosaccharide oxazoline promoted by endoglycosidases CCN180H. The resultant glycopeptide, bearing the complex-type α-N-sialyl undecasaccharide, exhibits resistance against PNGase F, which may be of potential use in studying the catabolism of N-glycans and glycoengineering those peptide-based therapeutics.
A Few-Degree Calorimeter for the future Electron-Ion Collider
Creators: name: Arratia, Miguel
name: Milton, Ryan
name: Paul, Sebouh J.
name: Schmookler, Barak
name: Zhang, Weibin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Measuring the region $0.1 < Q^{2} < 1.0$ GeV$^{2}$ is essential to support searches for gluon saturation at the future Electron-Ion Collider. Recent studies have revealed that covering this region at the highest beam energies is not feasible with current detector designs, resulting in the so-called $Q^{2}$ gap. In this work, we present a design for the Few-Degree Calorimeter (FDC), which addresses this issue. The FDC uses SiPM-on-tile technology with tungsten absorber and covers the range of $-4.6 < η< -3.6$. It offers fine transverse and longitudinal granularity, along with excellent time resolution, enabling standalone electron tagging. Our design represents the first concrete solution to bridge the $Q^{2}$ gap at the EIC.
The VLT-VIRMOS Mask Manufacturing Unit
Creators: name: Conti, G.
name: Mattaini, E.
name: Chiappetti, L.
name: Maccagni, D.
name: Sant'Ambrogio, E.
name: Bottini, D.
name: Garilli, B.
name: Fèvre, O. Le
name: Saisse, M.
name: Voët, C.
name: Caputi, O.
name: Cascone, E.
name: Mancini, D.
name: Mancini, G.
name: Perrotta, F.
name: Schipani, P.
name: Vettolani, G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The VIRMOS Consortium has the task to design and manufacture two spectrographs for ESO VLT, VIMOS (Visible Multi-Object Spectrograph) and NIRMOS (Near Infrared Multi-Object Spectrograph). This paper describes how the Mask Manufacturing Unit (MMU), which cuts the slit masks to be used with both instruments, meets the scientific requirements and manages the storage and the insertion of the masks into the instrument. The components and the software of the two main parts of the MMU, the Mask Manufacturing Machine and the Mask Handling System, are illustrated together with the mask material and with the slit properties. Slit positioning is accurate within 15 micron, equivalent to 0.03 arcsec on the sky, while the slit edge roughness has an rms on the order of 0.03 pixels on scales of a slit 5 arcsec long and of 0.01 pixels on the pixel scale (0.205 arcsec). The MMU has been successfully installed during July/August 2000 at the Paranal Observatory and is now operational for spectroscopic mask cutting, compliant with the requested specifications.
description: Accepted for publication in PASP April 2001 PASP Latex preprint style, 31 pages including 9 figures (5 jpg2eps compressed)
Designing Silicon Photonic Devices using Artificial Neural Networks
Creators: name: Hammond, Alec M.
name: Camacho, Ryan M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We develop and experimentally validate a novel neural network design framework for silicon photonics devices that is both practical and intuitive. The framework is applicable to nearly all known integrated photonics devices, but as case studies we consider simple waveguides and chirped Bragg Gratings. By using artificial neural networks, we decrease the computational cost relative to traditional design methodologies by more than 4 orders of magnitude. We also demonstrate the abstraction of the device models to a few simple input and output parameters relevant to designers. We then apply the results to various design problems and experimentally compare fabricated devices to the neural network's predictions.
Low-temperature specific heat of La0.78Pb0.22MnO3-d manganite
Creators: name: Ghivelder, L.
name: Freitas, R. S.
name: Rapp, R. E.
name: Chaves, F. A. B.
name: Gospodinov, M.
name: Gusmao, M. A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The specific heat of the perovskite manganite La0.78Pb0.22MnO3-d was measured from 0.5 to 25 K. The results yield values of the electronic density of states, the Debye temperature, and the spin-wave stiffness constant of the compound. The magnetic contribution was found to be consistent with the existence of a gap in the spin-wave spectrum, and a phonon term in T^5 was needed to fit the data.
description: accepted for presentation at the International Conference on Magnetism, Recife, August 2000; submitted to J. Magn. Magn. Mater
Impact of K16A and K28A mutation on the structure and dynamics of amyloid-β42 peptide in Alzheimer’s disease: key insights from molecular dynamics simulations
Creators: name: Suniba Shuaib
name: Rajneet Kaur Saini
name: Goyal, Deepti
name: Bhupesh Goyal
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Computational Biology

description: The aggregation of amyloid-β42 (Aβ42) peptide into toxic oligomers and fibrils is a key step in the Alzheimer disease pathogenesis. The recent studies highlighted that lysine residues (K16 and K28) play a critical role in the Aβ42 self-assembly and are the target of entities like molecular tweezer, CLR01. The studies reveal that lysine to alanine mutation significantly affect Aβ oligomerization, toxicity and aggregation process. However, the molecular mechanism behind reduced Aβ toxicity on K16A and K28A mutation remain elusive. In this regard, molecular dynamics (MD) simulations were performed in the present study to get insights into the effect of K16A and K28A mutation in Aβ42 self-assembly. The MD simulations highlighted that K16A and K28A mutation in the aggregation-prone region, i.e., central hydrophobic core (KLVFF, 16–20) and bend region (D23–K28), cause major structural changes in the Aβ42 monomer. The secondary structure analysis highlight that modulation of aggregation in K16A and K28A is linked to the increase in the overall helix content and a concomitant decrease in the β–sheet content of Aβ42 monomer. The short-range tertiary contacts between central hydrophobic core and C-terminal region were relatively reduced in K16A and K28A as compare to wild type (wt) Aβ42. The mechanistic insights from the study will be beneficial for the design and development of novel inhibitors that will bind and block the interactions, mediated by lysine residues specifically, critical for the Aβ42 self-assembly in Alzheimer disease. The molecular mechanism behind modulation of amyloid-β42 (Aβ42) self-assembly on K16A and K28A mutation has been investigated using molecular dynamics (MD) simulations. MD simulations reveal that reduced aggregation in K16A and K28A is linked to the increase in the overall helix content and a concomitant decrease in the β–sheet content, particularly at the C–terminal region, of Aβ42. Communicated by Ramaswamy H. Sarma