cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
(2945) Henry Marshall Thackeray
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(2941) William Carr Thackeray
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Variation in oxidative activity with time and species from Varyingly hungry caterpillars: predictive models and foliar chemistry suggest how to eat a rainforest
Creators: name: Segar, Simon T.
name: Volf, Martin
name: Brus Isua
name: Mentap Sisol
name: Redmond, Conor M.
name: Rosati, Margaret E.
name: Gewa, Bradley
name: Molem, Kenneth
name: Dahl, Chris
name: Holloway, Jeremy D.
name: Basset, Yves
name: Miller, Scott E.
name: Weiblen, George
name: Juha-Pekka Salminen
name: Novotny, Vojtech
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: A histogram of mean oxidative activity (mg/g) (± one s.e.) for all 88 species analysed.
Spectroscopic Time-series Performance of JWST/NIRSpec from Commissioning Observations
Creators: name: Espinoza, Néstor
name: Úbeda, Leonardo
name: Birkmann, Stephan M.
name: Ferruit, Pierre
name: Valenti, Jeff A.
name: Sing, David K.
name: Rustamkulov, Zafar
name: Regan, Michael
name: Kendrew, Sarah
name: Sabbi, Elena
name: Schlawin, Everett
name: Beatty, Thomas
name: Albert, Loïc
name: Greene, Thomas P.
name: Nikolov, Nikolay
name: Karakla, Diane
name: Keyes, Charles
name: Kumari, Nimisha
name: de Oliveira, Catarina Alves
name: Böker, Torsten
name: Peña-Guerrero, Maria
name: Giardino, Giovanna
name: Manjavacas, Elena
name: Proffitt, Charles
name: Rawle, Timothy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We report on JWST commissioning observations of the transiting exoplanet HAT-P-14 b, obtained using the Bright Object Time Series (BOTS) mode of the NIRSpec instrument with the G395H/F290LP grating/filter combination ($3-5μ$m). While the data were used primarily to verify that the NIRSpec BOTS mode is working as expected, and to enable it for general scientific use, they yield a precise transmission spectrum which we find is featureless down to the precision level of the instrument, consistent with expectations given HAT-P-14~b's small scale-height and hence expected atmospheric features. The exquisite quality and stability of the \emph{JWST/NIRSpec} transit spectrum -- almost devoid of any systematic effects -- allowed us to obtain median uncertainties of 50-60 ppm in this wavelength range at a resolution of $R=100$ in a single exposure, which is in excellent agreement with pre-flight expectations and close to the (or at the) photon-noise limit for a $J = 9.094$, F-type star like HAT-P-14. These observations showcase the ability of NIRSpec/BOTS to perform cutting-edge transiting exoplanet atmospheric science, setting the stage for observations and discoveries to be made in Cycle 1 and beyond.
description: 16 pages, 14 figures; part of the PASP Focus Issue "JWST Time-Series Observations: Commissioning Performance". Paper after the first round of referee comments; inputs welcome
Figure S1 from Variably hungry caterpillars: predictive models and foliar chemistry suggest how to eat a rainforest.
Creators: name: Segar, Simon T.
name: Volf, Martin
name: Brus Isua
name: Mentap Sisol
name: Redmond, Conor M.
name: Rosati, Margaret E.
name: Gewa, Bradley
name: Molem, Kenneth
name: Dahl, Chris
name: Holloway, Jeremy D.
name: Basset, Yves
name: Miller, Scott E.
name: Weiblen, George
name: Juha-Pekka Salminen
name: Novotny, Vojtech
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: A schematic diagram of our analytical steps. All predictive analyses included the standardised Madang data set (Input 1). Firstly, we fit a linear model to the association strengths of our bipartite data set, with a phylogenetic correlation between interacting species (Input 1). We then used the community covariance matrices and phylogenetically standardized interactions strengths derived from this model to perform sequential removal and host prediction for each interactant from the matrix. This allowed us to generate a predicted binary host use matrix filled with the most probable interactions (Output 1). These predictions were then validated by correlating matrix fill and using null models (Validation). Finally, the quantitative data set (Input 1) was extended to include a phylogeny in which the position of hosts from the expanded data set was known, but all additional host associations were predicted based on the original covariance matrices and phylogenetically standardized interactions strengths and this new phylogeny.
Appendix 4 from Variably hungry caterpillars: predictive models and foliar chemistry suggest how to eat a rainforest.
Creators: name: Segar, Simon T.
name: Volf, Martin
name: Brus Isua
name: Mentap Sisol
name: Redmond, Conor M.
name: Rosati, Margaret E.
name: Gewa, Bradley
name: Molem, Kenneth
name: Dahl, Chris
name: Holloway, Jeremy D.
name: Basset, Yves
name: Miller, Scott E.
name: Weiblen, George
name: Juha-Pekka Salminen
name: Novotny, Vojtech
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: Literature review and summary of Geometroidea, Pyraloidea and Thyrididae host use in the oriental region.
Variation in protein precipitation with time and species from Varyingly hungry caterpillars: predictive models and foliar chemistry suggest how to eat a rainforest
Creators: name: Segar, Simon T.
name: Volf, Martin
name: Brus Isua
name: Mentap Sisol
name: Redmond, Conor M.
name: Rosati, Margaret E.
name: Gewa, Bradley
name: Molem, Kenneth
name: Dahl, Chris
name: Holloway, Jeremy D.
name: Basset, Yves
name: Miller, Scott E.
name: Weiblen, George
name: Juha-Pekka Salminen
name: Novotny, Vojtech
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: A histogram of mean protein precipitation (mg/g) (± one s.e.) for all 88 species analysed.
ALTERATION OF SEAGRASS SPECIES COMPOSITION AND FUNCTION OVER TWO DECADES
Creators: name: Peterson, Charles H.
name: Bishop, Melanie J.
name: Micheli, Fiorenza
name: Rivera, José
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Changes in the species composition and structural characteristics of marine vegetated habitats in response to climate change or local anthropogenic impacts may alter their quality as habitat for associated fish and invertebrates. Summer densities and bio
Appendix 2 from Variably hungry caterpillars: predictive models and foliar chemistry suggest how to eat a rainforest.
Creators: name: Segar, Simon T.
name: Volf, Martin
name: Brus Isua
name: Mentap Sisol
name: Redmond, Conor M.
name: Rosati, Margaret E.
name: Gewa, Bradley
name: Molem, Kenneth
name: Dahl, Chris
name: Holloway, Jeremy D.
name: Basset, Yves
name: Miller, Scott E.
name: Weiblen, George
name: Juha-Pekka Salminen
name: Novotny, Vojtech
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: A list of individuals sequenced for each gene included in this study, including from published studies (Haines and Rubinoff, 2012; Sihvonen et al., 2011). Red text indicates individuals where close relatives were used as BOLD extracts were not available for the exact specimen.
Standards for associations and alliances of the U.S. National Vegetation Classification
Creators: name: Jennings, Michael D.
name: Roberts, David
name: Peet, Robert K.
name: Faber-Langendoen, Don
name: Loucks, Orie L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: This article provides guidelines for the description, documentation, and review of proposals for new or revised plant associations and alliances to be recognized as units of vegetation within the U.S. National Vegetation Classification (NVC). By setting forth standards for field records, analysis, description, peer review, and archiving, the Ecological Society of America's Vegetation Classification Panel, in collaboration with the U.S. Federal Geographic Data Committee, NatureServe, and others, seeks to advance our common understanding of vegetation and improve our capability to sustain and restore natural systems. We provide definitions for the two floristic levels of the NVC hierarchy: associations and alliances. This is followed by a description of standards for field plot records and the identification and classification of vegetation types. Procedures for review and evaluation of proposed additions and revisions of types are provided, as is a structure for data archiving and dissemination. These procedures provide a dynamic and practical way to publish new or revised descriptions of vegetation types while maintaining a current, authoritative list of types for multiple users to access and apply.
The two-loop eight-point amplitude in ABJM theory
Creators: name: He, Song
name: Huang, Yu-tin
name: Kuo, Chia-Kai
name: Li, Zhenjie
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we present the two-loop correction to scattering amplitudes in three-dimensional $\mathcal{N}=6$ Chern-Simons matter theory. We use eight-point case as our main example, but the method generalizes to all multiplicities. The integrand is completely fixed by dual conformal symmetry, maximal cuts, constraints from soft-collinear behavior and from vanishing of odd-multiplicity amplitudes. After performing integrations with Higgs regularizations, the integrated results demonstrate that the infrared divergence is again identical to that of ${\cal N}=4$ super Yang-Mills. After subtracting divergences, the finite part is dual conformal invariant, and respects various symmetries; it has uniform transcendentality weight two and exhibits nice analytic structure.
description: 57 pages, version accepted in JHEP
Structure and dynamics of Toll immunoreceptor activation in the mosquito Aedes aegypti.
Creators: name: Saucereau, Yoann
name: Wilson, Thomas H
name: Tang, Matthew CK
name: Moncrieffe, Martin C
name: Hardwick, Steven W
name: Chirgadze, Dimitri Y
name: Soares, Sandro G
name: Marcaida, Maria Jose
name: Gay, Nicholas J
name: Gangloff, Monique
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Article
/631/535/1258/1259
/631/250/262/2106/2108
/631/250/262
/631/250/2503
/101
/101/28
/82/103
/38/91
/96/21
/140/58
article

description: Aedes aegypti has evolved to become an efficient vector for arboviruses but the mechanisms of host-pathogen tolerance are unknown. Immunoreceptor Toll and its ligand Spaetzle have undergone duplication which may allow neofunctionalization and adaptation. Here we present cryo-EM structures and biophysical characterisation of low affinity Toll5A complexes that display transient but specific interactions with Spaetzle1C, forming asymmetric complexes, with only one ligand clearly resolved. Loop structures of Spaetzle1C and Toll5A intercalate, temporarily bridging the receptor C-termini to promote signalling. By contrast unbound receptors form head-to-head homodimers that keep the juxtamembrane regions far apart in an inactive conformation. Interestingly the transcriptional signature of Spaetzle1C differs from other Spaetzle cytokines and controls genes involved in innate immunity, metabolism and tissue regeneration. Taken together our results explain how upregulation of Spaetzle1C in the midgut and Toll5A in the salivary gland shape the concomitant immune response.
Fast Noise Removal in Hyperspectral Images via Representative Coefficient Total Variation
Creators: name: Peng, Jiangjun
name: Wang, Hailin
name: Cao, Xiangyong
name: Liu, Xinlin
name: Rui, Xiangyu
name: Meng, Deyu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Mining structural priors in data is a widely recognized technique for hyperspectral image (HSI) denoising tasks, whose typical ways include model-based methods and data-based methods. The model-based methods have good generalization ability, while the runtime cannot meet the fast processing requirements of the practical situations due to the large size of an HSI data $ \mathbf{X} \in \mathbb{R}^{MN\times B}$. For the data-based methods, they perform very fast on new test data once they have been trained. However, their generalization ability is always insufficient. In this paper, we propose a fast model-based HSI denoising approach. Specifically, we propose a novel regularizer named Representative Coefficient Total Variation (RCTV) to simultaneously characterize the low rank and local smooth properties. The RCTV regularizer is proposed based on the observation that the representative coefficient matrix $\mathbf{U}\in\mathbb{R}^{MN\times R} (R\ll B)$ obtained by orthogonally transforming the original HSI $\mathbf{X}$ can inherit the strong local-smooth prior of $\mathbf{X}$. Since $R/B$ is very small, the HSI denoising model based on the RCTV regularizer has lower time complexity. Additionally, we find that the representative coefficient matrix $\mathbf{U}$ is robust to noise, and thus the RCTV regularizer can somewhat promote the robustness of the HSI denoising model. Extensive experiments on mixed noise removal demonstrate the superiority of the proposed method both in denoising performance and denoising speed compared with other state-of-the-art methods. Remarkably, the denoising speed of our proposed method outperforms all the model-based techniques and is comparable with the deep learning-based approaches.
description: 16 pages, 18 figures, 5 tables, 1 theorem
Experimental Passive Round-Robin Differential Phase-Shift Quantum Key Distribution
Creators: name: Guan, Jian-Yu
name: Cao, Zhu
name: Liu, Yang
name: Shen-Tu, Guo-Liang
name: Pelc, Jason S.
name: Fejer, M. M.
name: Peng, Cheng-Zhi
name: Ma, Xiongfeng
name: Zhang, Qiang
name: Pan, Jian-Wei
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In quantum key distribution (QKD), the bit error rate is used to estimate the information leakage and hence determines the amount of privacy amplification --- making the final key private by shortening the key. In general, there exists a threshold of the error rate for each scheme, above which no secure key can be generated. This threshold puts a restriction on the environment noises. For example, a widely used QKD protocol --- BB84 --- cannot tolerate error rates beyond 25%. A new protocol, round-robin differential phase shifted (RRDPS) QKD, essentially removes this restriction and can in principle tolerate more environment disturbance. Here, we propose and experimentally demonstrate a passive RRDPS QKD scheme. In particular, our 500 MHz passive RRDPS QKD system is able to generate a secure key over 50 km with a bit error rate as high as 29%. This scheme should find its applications in noisy environment conditions.
description: 5 pages, 3 figures
(2942) Ethel Coates
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
A Bayesian inference of relativistic mean-field model for neutron star matter from observation of NICER and GW170817/AT2017gfo
Creators: name: Zhu, Zhenyu
name: Li, Ang
name: Liu, Tong
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The observations of optical and near-infrared counterparts of binary neutron star mergers not only enrich our knowledge about the abundance of heavy elements in the Universe, or help reveal the remnant object just after the merger as generally known, but also can effectively constrain dense nuclear matter properties and the equation of state (EOS) in the interior of the merging stars. Following the relativistic mean-field description of nuclear matter, we perform the Bayesian inference of the EOS and the nuclear matter properties using the first multi-messenger event GW170817/AT2017gfo, together with the NICER mass-radius measurements of pulsars. The kilonova is described by a radiation-transfer model with the dynamical ejecta, and light curves connect with the EOS through the quasi-universal relations between the ejecta properties (the ejected mass, velocity, opacity or electron fraction) and binary parameters (the mass ratio and reduced tidal deformability). It is found that the posterior distributions of the reduced tidal deformability from the AT2017gfo analysis display a bimodal structure, with the first peak enhanced by the GW170817 data, leading to slightly softened posterior EOSs, while the second peak cannot be achieved by a nuclear EOS with saturation properties in their empirical ranges. The inclusion of NICER data in our analyses results in stiffened EOS posterior because of the massive pulsar PSR J0740+6620. We give results at nuclear saturation density for the nuclear incompressibility, the symmetry energy and its slope, as well as the nucleon effective mass, from our analysis of those observational data.
description: Added discussions of PREX-II and GW190814, accepted by APJ
Local origin of the pseudogap in the attractive Hubbard model
Creators: name: Peters, Robert
name: Bauer, Johannes
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We provide a new perspective on the pseudogap physics for attractive fermions as described by the three-dimensional Hubbard model. The pseudogap in the single-particle spectral function, which occurs for temperatures above the critical temperature $T_c$ of the superfluid transition, is often interpreted in terms of preformed, uncondensed pairs. Here we show that the occurrence of pseudogap physics can be consistently understood in terms of local excitations which lead to a splitting of the quasiparticle peak for sufficiently large interaction. This effect becomes prominent at intermediate and high temperatures when the quantum mechanical hopping is incoherent. We clarify the existence of a conjectured temperature below which pseudogap physics is expected to occur. Our results are based on approximating the physics of the three-dimensional Hubbard model by dynamical mean field theory calculations and a momentum independent self-energy. Our predictions can be tested with ultracold atoms in optical lattices with currently available temperatures and spectroscopic techniques.
description: 15 pages including appendix; suggestions for further references welcome
Logistic regression plots from Varyingly hungry caterpillars: predictive models and foliar chemistry suggest how to eat a rainforest
Creators: name: Segar, Simon T.
name: Volf, Martin
name: Brus Isua
name: Mentap Sisol
name: Redmond, Conor M.
name: Rosati, Margaret E.
name: Gewa, Bradley
name: Molem, Kenneth
name: Dahl, Chris
name: Holloway, Jeremy D.
name: Basset, Yves
name: Miller, Scott E.
name: Weiblen, George
name: Juha-Pekka Salminen
name: Novotny, Vojtech
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: Plots of different fitted quasibinomial regressions for both oxidative activity (mg/g) and protein precipitation (mg/g).
Deep Learning of Protein Structural Classes: Any Evidence for an 'Urfold'?
Creators: name: Draizen, Eli J
name: Jaiswal, Menuka
name: Saleem, Saad
name: Kweon, Yonghyeon
name: Veretnik, Stella
name: Mura, Cameron
name: Bourne, Philip E
Publisher: name: Zenodo
Year: 2020
Subjects: Protein Structure
Deep Learning
Sequence, Structure, Function

description: Recent advances in protein structure determination and prediction offer new opportunities to decipher relationships amongst proteins--a task that entails 3D structure comparison and classification. Historically, protein domain classification has been somewhat manual and heuristic. While CATH and related resources represent significant steps towards a more systematic (and automatable) approach, more scalable and objective classification methods, e.g., grounded in machine learning, could be informative. Indeed, comparative analyses of protein structures via Deep Learning (DL), though it may entail large-scale restructuring of classification schemes, could uncover distant relationships. We have developed new DL models for domain structures (including physicochemical properties), focused initially at CATH's homologous superfamily (SF) level. Adopting DL approaches to image classification and segmentation, we have devised and applied a hybrid convolutional autoencoder architecture that allows SF-specific models to learn features that, in a sense, 'define' the various homologous SFs. We quantitatively evaluate pairwise 'distances' between SFs by building one model per SF and comparing the loss functions of the models. Clustering on these distance matrices provides a new view of protein interrelationships--a view that extends beyond simple structural/geometric similarity, towards the realm of structure/function properties, and that is consistent with a recently proposed 'Urfold' concept.
Cosmological Probes for Supersymmetry
Creators: name: Khlopov, Maxim
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The multi-parameter character of supersymmetric dark-matter models implies the combination of their experimental studies with astrophysical and cosmological probes. The physics of the early Universe provides nontrivial effects of non-equilibrium particles and primordial cosmological structures. Primordial black holes (PBHs) are a profound signature of such structures that may arise as a cosmological consequence of supersymmetric (SUSY) models. SUSY-based mechanisms of baryosynthesis can lead to the possibility of antimatter domains in a baryon asymmetric Universe. In the context of cosmoparticle physics, which studies the fundamental relationship of the micro- and macro-worlds, the development of SUSY illustrates the main principles of this approach, as the physical basis of the modern cosmology provides cross-disciplinary tests in physical and astronomical studies.
description: Invited review to the special issue "Supersymmetry and Dark matter" (ed. D.Cline) of the Symmetry journal. arXiv admin note: substantial text overlap with arXiv:0801.0116, arXiv:1311.2468
DOWNLOADS Les loups du millénaire Tome 4
Creators: name: Clark
Publisher: name: Zenodo
Year: 2024

description: Les loups du millénaire Tome 4 pan Sapir A. Englard

Télécharger eBook gratuit ➡ Link

Caractéristiques

Les loups du millénaire Tome 4

Sapir A. Englard

Nb. de pages: 256

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782755665734

Editeur: Hugo Roman

Date de parution: 2023

 

 

 

Ebooks à télécharger gratuitement epub Les loups du millénaire Tome 4

 

Overview

Sienna traverse un épisode de montagnes russes émotionnelles. De grands bonheurs, de grandes tristesses qui la toucheront ainsi que ses proches. Pendant ce temps-là, le mystère qui règne autour des vampires bat toujours son plein. La meute de la côte Est aura-t-elle raison de ces assaillants ? L'arrivée d'un nouveau personnage énigmatique donnera peut-être à Sienna les explications qu'elle attend avec impatience mais aussi avec une certaine inquiétude.
Close encounters involving free-floating planets in star clusters
Creators: name: Wang, Long
name: Kouwenhoven, M. B. N.
name: Zheng, Xiaochen
name: Church, Ross P.
name: Davies, Melvyn B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Instabilities in planetary systems can result in the ejection of planets from their host system, resulting in free-floating planets (FFPs). If this occurs in a star cluster, the FFP may remain bound to the star cluster for some time and interact with the other cluster members until it is ejected. Here, we use $N$-body simulations to characterise close star-planet and planet-planet encounters and the dynamical fate of the FFP population in star clusters containing $500-2000$ single or binary star members. We find that FFPs ejected from their planetary system at low velocities typically leave the star cluster 40% earlier than their host stars, and experience tens of close ($<1000$ AU) encounters with other stars and planets before they escape. The fraction of FFPs that experiences a close encounter depends on both the stellar density and the initial velocity distribution of the FFPs. Approximately half of the close encounters occur within the first 30 Myr, and only 10% occur after 100 Myr. The periastron velocity distribution for all encounters is well-described by a modified Maxwell-Bolzmann distribution, and the periastron distance distribution is linear over almost the entire range of distances considered, and flattens off for very close encounters due to strong gravitational focusing. Close encounters with FFPs can perturb existing planetary systems and their debris structures, and they can result in re-capture of FFPs. In addition, these FFP populations may be observed in young star clusters in imaging surveys; a comparison between observations and dynamical predictions may provide clues to the early phases of stellar and planetary dynamics in star clusters.
description: Accepted for publication in MNRAS; 18 pages, 12 figures
Descargar METRO 2033 DMITRY GLUKHOVSKY Gratis - EPUB, PDF y MOBI
Creators: name: Fletcher
Publisher: name: Zenodo
Year: 2024

description: METRO 2033 de DMITRY GLUKHOVSKY

Descargar eBook gratis ➡ Link

Ficha técnica

METRO 2033

DMITRY GLUKHOVSKY

Número de páginas: 544

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788445006900

Editorial: MINOTAURO

Año de edición: 2019

 

 

 

 

 

Libros gratis de mitología griega para descargar. METRO 2033 de DMITRY GLUKHOVSKY (Spanish Edition)

 

Overview

Estamos en el año 2033. Tras una guerra devastadora, amplias zonas del mundo han quedado sepultadas bajo escombros y cenizas. También Moscú se ha transformado en una ciudad fantasma. Los supervivientes se han refugiado bajo tierra, en la red de metro, y han creado allí una nueva civilización. Una civilización diferente de todas las que habían existido con anterioridad. Este libro narra las aventuras del joven Artjom, un muchacho que abandona la estación de metro donde ha pasado buena parte de su vida para tratar de proteger a la red entera contra una siniestra amenaza. Porque estos últimos hombres no están solos en el subsuelo
(2938) George Henry Martin
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
A unique, ring-like radio source with quadrilateral structure detected with machine learning
Creators: name: Lochner, Michelle
name: Rudnick, Lawrence
name: Heywood, Ian
name: Knowles, Kenda
name: Shabala, Stanislav S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We report the discovery of a unique object in the MeerKAT Galaxy Cluster Legacy Survey (MGCLS) using the machine learning anomaly detection framework Astronomaly. This strange, ring-like source is 30' from the MGCLS field centred on Abell 209, and is not readily explained by simple physical models. With an assumed host galaxy at redshift 0.55, the luminosity (10^25 W/Hz) is comparable to powerful radio galaxies. The source consists of a ring of emission 175 kpc across, quadrilateral enhanced brightness regions bearing resemblance to radio jets, two "ears" separated by 368 kpc, and a diffuse envelope. All of the structures appear spectrally steep, ranging from -1.0 to -1.5. The ring has high polarization (25%) except on the bright patches (<10%). We compare this source to the Odd Radio Circles recently discovered in ASKAP data and discuss several possible physical models, including a termination shock from starburst activity, an end-on radio galaxy, and a supermassive black hole merger event. No simple model can easily explain the observed structure of the source. This work, as well as other recent discoveries, demonstrates the power of unsupervised machine learning in mining large datasets for scientifically interesting sources.
description: 8 pages, 7 figures, published in MNRAS
Impacts of aspergillosis on sea fan coral demography: modeling a moving target
Creators: name: Kim, Kiho
name: Vu, Ivana
name: Ellner, Stephen P.
name: Harvell, C. Drew
name: Bruno, John F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Little is known about how epizootics in natural populations affect vital rates and population structure, or about the process of recovery after an outbreak subsides. We investigated the effects of aspergillosis, an infectious disease caused by the fungal pathogen Aspergillus sydowii, on the demography of a gorgonian coral, Gorgonia ventalina. Caribbean sea fans were affected by a seven-year epizootic, marked by an initial period in 1994 of high infection prevalence, high mortality rates, and almost complete reproductive failure of infected fans. Post epizootic, in 2005, host populations were relatively healthy, with low disease prevalence. Using longitudinal data from populations on coral reefs in the Florida Keys (USA) and the Yucatán Peninsula (Mexico), we documented changes in the epidemiology of sea fan aspergillosis over the course of the epizootic. We developed an "integral projection model" that scales disease impacts from individual to population levels using direct estimates of vital rates. Within-colony lesion growth rate and host mortality were higher during the peak of the epizootic. Effects on individuals and populations changed substantially post-epizootic; recruitment increased, mortality of infected adults decreased, and the size dependence of infection was reduced. Elasticity analysis indicated that population growth is more sensitive to changes in the growth and survival of established colonies than to recruitment, due to slow colony growth and the longevity and fecundity of large adults. Disease prevalence in our monitored populations decreased from ∼50% in 1997 to <10% by 2003 and <1% in 2007 and was accompanied by very high mortality during the early stages of the epizootic. The population model suggested that host evolution (due to selection for higher disease resistance through differential mortality) could proceed quickly enough to explain the observed changes in prevalence and in the size independence of infection risk. Our model indicates that the time required for population recovery following an outbreak is largely determined by the percentage of healthy tissue lost from the population. However, recovery following an especially severe outbreak (i.e., 80% or more tissue loss) is much faster if the affected population receives an external supply of recruits from unaffected areas.
Growth of A Massive Black Hole Via Tidal Disruption Accretion
Creators: name: Lee, Seungjae
name: Kim, Ji-hoon
name: Oh, Boon Kiat
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stars that are tidally disrupted by the massive black hole (MBH) may contribute significantly to the growth of the MBH, especially in dense nuclear star clusters (NSCs). Yet, this tidal disruption accretion (TDA) of stars onto the MBH has largely been overlooked compared to the gas accretion (GA) channel in most numerical experiments until now. In this work, we implement a black hole growth channel via TDA in the high-resolution adaptive mesh refinement code Enzo to investigate its influence on a MBH seed's early evolution. We find that a MBH seed grows rapidly from $10^3\,\mathrm{M}_\odot$ to $\gtrsim 10^6\,\mathrm{M}_\odot$ in 200\,Myrs in some of the tested simulations. Compared to a MBH seed that grows only via GA, TDA can enhance the MBH's growth rate by up to more than an order of magnitude. However, as predicted, TDA mainly helps the early growth of the MBH (from $10^{3-4}\,\mathrm{M}_\odot$ to $\lesssim10^{5}\,\mathrm{M}_\odot$) while the later evolution is generally dominated by GA. We also observe that the star formation near the MBH is suppressed when TDA is most active, sometimes with a visible cavity in gas (of size $\sim$ a few pc) created in the vicinity of the MBH. It is because the MBH may grow expeditiously with both GA and TDA, and the massive MBH could consume its neighboring gas faster than being replenished by gas inflows. Our study demonstrates the need to consider different channels of black hole accretion that may provide clues for the existence of supermassive black holes at high redshifts.
description: 17 pages, and 10 figures
The underpinnings of the relationship of species richness with space and time
Creators: name: Chiarucci, Alessandro
name: Willig, Michael R.
name: Helmus, Matthew R.
name: McGlinn, Daniel J.
name: Scheiner, Samuel M.
name: Fox, Gordon A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Various ecological mechanisms influence the forms of species richness relationships (SRRs). These mechanisms can be gathered under five general categories: more individuals, environmental heterogeneity, dispersal limitations, biotic interactions, and multiple species pools. Often only the first two categories are discussed. In contrast, we examine all five and explore how they can influence the form of SRRs. We discuss how various sampling schemes and methods of SRR construction can be used to gain insight about how various processes influence species richness patterns. The field is ripe for probing these effects through more complex simulation models or more sophisticated mathematical approaches. To facilitate deeper understanding, we need to embrace the full spectrum of SRRs and reconsider the assumed common knowledge about the functional form of SRRs. The relationship between species richness and the space or time over which it is sampled has received increasing attention over the past decade, resulting in extensive debates about terminology and methods of construction. These debates reflect deep conceptual issues; to resolve them we discuss the long history of species richness relationships (SRRs) and the connections among different methodological and terminological approaches. We reinforce recent calls to organize the variety of methods used to construct SRRs into a cohesive structure. SRRs are descriptors of various aspects of inventory (α- and γ-) diversity and the various types of SRRs serve different purposes. Contrary to most claims, SRRs do not provide a direct measure of differentiation (β-) diversity.
Invariant Time-Dependent Exchange Perturbation Theory and its Application to the Particles Collision Problem
Creators: name: Orlenko, Elena V.
name: Latychevskaia, Tatiana
name: Evstafev, Alexandr V.
name: Orlenko, Fedor E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present the formalism of Time-dependent Exchange Perturbation Theory (TDEPT) built to all orders of perturbation, for the arbitrary time dependency of perturbation. The theory takes into account the rearrangement of electrons among centres. We show how the formalism can be reduced to the standard form of invariant perturbation theory by 'switching off' the re-arrangement of electrons among centres. The elements of the scattering S-matrix and transitions T-matrix and the formula for the electron scattering differential cross section are derived. The application of the theory to scattering and collision problems is discussed. As an example, we apply the theory to proton scattering on a Lithium atom, calculating the differential and total cross-sections.
DOWNLOADS NLT Life Application Study Bible, Third Edition (Hardcover, Red Letter) by Tyndale
Creators: name: Couture
Publisher: name: Zenodo
Year: 2024

description: NLT Life Application Study Bible, Third Edition (Hardcover, Red Letter) by Tyndale

 

 

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NLT Life Application Study Bible, Third Edition (Hardcover, Red Letter)

Tyndale

Page: 2496

Format: pdf, ePub, mobi, fb2

ISBN: 9781496442024

Publisher: Tyndale House Publishers

 

Downloading google books for free NLT Life Application Study Bible, Third Edition (Hardcover, Red Letter)

Overview

Winner of the 2020 Christian Book Award for Bible of the Year! Trusted & Treasured by Millions of Readers over 30 years, the Life Application Study Bible Is Today’s #1–Selling Study Bible Now it has been thoroughly updated and expanded, offering even more relevant insights for understanding and applying God’s Word to everyday life in today’s world. Discover How You Can Apply the Bible to Your Life Today With a fresh two-color interior design and meaningfully updated study notes and features, this Bible will help you understand God’s Word better than ever. It answers the real-life questions that you may have and provides you practical yet powerful ways to apply the Bible to your life every day. Study the stories and teachings of the Bible with verse-by-verse commentary. Gain wisdom from people in the Bible by exploring their accomplishments and learning from their mistakes. Survey the big picture of each book through overviews, vital statistics, outlines, and timelines, and grasp difficult concepts using in-text maps, charts, and diagrams—all to help you do life God’s way, every day. Features: (Enhanced, updated, and with new content added throughout) Now more than 10,000 Life Application notes and features Over 100 Life Application profiles of key Bible people Introductions and overviews for each book of the Bible More than 500 maps & charts placed for quick reference Dictionary/concordance Extensive side-column cross-reference system to facilitate deeper study Life Application index to notes, charts, maps, and profiles Refreshed design with a second color for visual clarity 16 pages of full-color maps Quality Smyth-sewn binding—durable, made for frequent use, and lays flat when open Presentation page Single-column format Christian Worker’s Resource, a special supplement to enhance the reader’s ministry effectiveness Full text of the Holy Bible, New Living Translation (NLT), combining the latest biblical scholarship with clear, natural English The words of Jesus are in red letter.
(2939) John Pinder
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Undergrounder by J.E. Glass on Audiobook New
Creators: name: Samuels
Publisher: name: Zenodo
Year: 2024

description: Undergrounder by J.E. Glass

 

 

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Undergrounder

J.E. Glass

Page: 400

Format: pdf, ePub, mobi, fb2

ISBN: 9798985255515

Publisher: Glass Nerd Books

 

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Overview

Drowned by men. Saved by a monster. The last place Alexandra Bailey expects her routine life of domestic journalism to lead is being sucked into icy floodwaters below New York City. Headlines like this happen to other people, but it's real, and she knows she's dead. Which makes the circumstances of her survival as impossible as the woman who drags her from the water. Saved but hardly safe, Alex wakes in the Underground, a world of misfits and monsters thriving below the streets. It's a journalism goldmine. One Alex can't resist digging into after learning her beastly savior is Leanna Farrow, adopted daughter of an infamous and "presumed dead" scientist. But Alex's curiosity, coupled with her rapidly developing feelings for Leanna, put both women in danger when Alex's inquiries pique the interest of a powerful family with bloody connections to the Underground's origins. If Alex wants to unravel the secrets of the world below, she'll have to walk the razor's edge, but some mysteries are better left buried.
EcoVeg: a new approach to vegetation description and classification
Creators: name: Tart, Dave
name: Weakley, Alan
name: Ponomarenko, Serguei
name: Comer, Patrick
name: Josse, Carmen
name: Saucier, Jean Pierre
name: Faber-Langendoen, Don
name: Meidinger, Del
name: Hoagland, Bruce
name: Keeler-Wolf, Todd
name: Navarro, Gonzalo
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: A vegetation classification approach is needed that can describe the diversity of terrestrial ecosystems and their transformations over large time frames, span the full range of spatial and geographic scales across the globe, and provide knowledge of reference conditions and current states of ecosystems required to make decisions about conservation and resource management. We summarize the scientific basis for EcoVeg, a physiognomic-floristic-ecological classification approach that applies to existing vegetation, both cultural (planted and dominated by human processes) and natural (spontaneously formed and dominated by nonhuman ecological processes). The classification is based on a set of vegetation criteria, including physiognomy (growth forms, structure) and floristics (compositional similarity and characteristic species combinations), in conjunction with ecological characteristics, including site factors, disturbance, bioclimate, and biogeography. For natural vegetation, the rationale for the upper levels (formation types) is based on the relation between global-scale vegetation patterns and macroclimate, hydrology, and substrate. The rationale for the middle levels is based on scaling from regional formations (divisions) to regional floristic-physiognomic types (macrogroup and group) that respond to meso-scale biogeographic, climatic, disturbance, and site factors. Finally, the lower levels (alliance and association) are defined by detailed floristic composition that responds to local to regional topo-edaphic and disturbance gradients. For cultural vegetation, the rationale is similar, but types are based on distinctive vegetation physiognomy and floristics that reflect human activities. The hierarchy provides a structure that organizes regional/continental vegetation patterns in the context of global patterns. A formal nomenclature is provided, along with a descriptive template that provides the differentiating criteria for each type at all levels of the hierarchy. Formation types have been described for the globe; divisions and macrogroups for North America, Latin America and Africa; groups, alliances and associations for the United States, parts of Canada, Latin America and, in partnership with other classifications that share these levels, many other parts of the globe.
Appendix 3 from Varyingly hungry caterpillars: predictive models and foliar chemistry suggest how to eat a rainforest
Creators: name: Segar, Simon T.
name: Volf, Martin
name: Brus Isua
name: Mentap Sisol
name: Redmond, Conor M.
name: Rosati, Margaret E.
name: Gewa, Bradley
name: Molem, Kenneth
name: Dahl, Chris
name: Holloway, Jeremy D.
name: Basset, Yves
name: Miller, Scott E.
name: Weiblen, George
name: Juha-Pekka Salminen
name: Novotny, Vojtech
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: A description of taxonomic updates published since Novotny et al. (2010) or resulting from this study.