cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the exactness of the universal backprojection formula for the spherical means Radon transform
Creators: name: Agranovsky, Mark
name: Kunyansky, Leonid
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35R30, 44A12, 45Q05

description: The spherical means Radon transform $\mathcal{M}f(x,r)$ is defined by the integral of a function $f$ in $\mathbb{R}^{n}$ over the sphere $S(x,r)$ of radius $r$ centered at a $x$, normalized by the area of the sphere. The problem of reconstructing $f$ from the data $\mathcal{M}f(x,r)$ where $x$ belongs to a hypersurface $Γ\subset\mathbb{R}^{n}$ and $r \in(0,\infty)$ has important applications in modern imaging modalities, such as photo- and thermo- acoustic tomography. When $Γ$ coincides with the boundary $\partialΩ$ of a bounded (convex) domain $Ω\subset\mathbb{R}^{n}$, a function supported within $Ω$ can be uniquely recovered from its spherical means known on $Γ$. We are interested in explicit inversion formulas for such a reconstruction. If $Γ=\partialΩ$, such formulas are only known for the case when $Γ$ is an ellipsoid (or one of its partial cases). This gives rise to the natural question: can explicit inversion formulas be found for other closed hypersurfaces $Γ$? In this article we prove, for the so-called "universal backprojection inversion formulas", that their extension to non-ellipsoidal domains $Ω$ is impossible, and therefore ellipsoids constitute the largest class of closed convex hypersurfaces for which such formulas hold.
description: 11 pages, 1 figure
WHISPER ME A LOVE SONG Nº 01 leer el libro
Creators: name: Vera
Publisher: name: Zenodo
Year: 2024

description: WHISPER ME A LOVE SONG Nº 01 de EKU TAKESHIMA

Descargar eBook gratis ➡ Link

Ficha técnica

WHISPER ME A LOVE SONG Nº 01

EKU TAKESHIMA

Número de páginas: 168

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788411403412

Editorial: PLANETA DE AGOSTINI

Año de edición: 2023

 

 

 

 

 

Descarga gratuita de libros electrónicos ebook para dbms WHISPER ME A LOVE SONG Nº 01

 

Overview

Esta es una historia de amor que da comienzo con un flechazo.Esta es una historia de amor que da comienzo con un flechazo.En la estación en la que los pétalos de las flores de cerezo danzan al viento, nosotras nos enamoramos a primera vista. En su primer día de bachillerato, Himari, una estudiante de primero, asiste a la fiesta de bienvenida para los nuevos estudiantes del instituto. En la fiesta actúa un grupo de música en el que Yori toca la guitarra y canta.La fascinación que le produce esa chica es, para Himari, amor a primera vista. Después de que Himari se tope con Yori y se lo haga saber sin rodeos, ella también se enamora a primera vista, pero, en su caso, lo que siente por ella no es un flechazo, sino amor... Así, aunque las dos se gustan, lo que entiende cada una por“gustar”difiere sutilmente.
Creation and direct laser acceleration of positrons in a single stage
Creators: name: Martinez, B.
name: Barbosa, B.
name: Vranic, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Relativistic positron beams are required for fundamental research in nonlinear strong field QED, plasma physics, and laboratory astrophysics. Positrons are difficult to create and manipulate due to their short lifetime, and their energy gain is limited by the accelerator size in conventional facilities. Alternative compact accelerator concepts in plasmas are becoming more and more mature for electrons, but positron generation and acceleration remain an outstanding challenge. Here we propose a new setup where we can generate, inject and accelerate them in a single stage during the propagation of an intense laser in a plasma channel. The positrons are created from a laser-electron collision at 90 degrees, where the injection and guiding are made possible by an 800 nC electron beam loading which reverses the sign of the background electrostatic field. We obtain a 20 fC positron beam, with GeV-level central energy within 0.5 mm of plasma.
description: 9 pages, 5 figures
[PDF] Réussir le CAPES (et/ou l'agrégation) d'Histoire-Géographie download
Creators: name: Erickson
Publisher: name: Zenodo
Year: 2024

description: Réussir le CAPES (et/ou l'agrégation) d'Histoire-Géographie pan Thomas Merle

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Réussir le CAPES (et/ou l'agrégation) d'Histoire-Géographie

Thomas Merle

Nb. de pages: 534

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782350307770

Editeur: Atlande

Date de parution: 2022

 

 

 

Livres gratuits en espagnol Réussir le CAPES (et/ou l'agrégation) d'Histoire-Géographie en francais DJVU par Thomas Merle

 

Overview

LA méthode pour réussir les concours d'Histoire-Géographie Tout pour réussir le Capes d'Histoire-Géographie. Les nouvelles épreuves professionnelles du concours difficiles à cerner pour les étudiants exigent un ouvrage méthodologique et pédagogique clair. Des exemples concrets de mise en situation pour répondre aux nouvelles exigences. Des conseils. Comprendre ce qui compte pour un correcteur.
Multiwavelength observations of a partially eruptive filament on 2011 September 8
Creators: name: Zhang, Q. M.
name: Ning, Z. J.
name: Guo, Y.
name: Zhou, T. H.
name: Cheng, X.
name: Ji, H. S.
name: Feng, L.
name: Wiegelmann, T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper, we report our multiwavelength observations of a partial filament eruption event in NOAA active region 11283 on 2011 September 8. A magnetic null point and the corresponding spine and separatrix surface are found in the active region. Beneath the null point, a sheared arcade supports the filament along the highly complex and fragmented polarity inversion line. After being activated, the sigmoidal filament erupted and split into two parts. The major part rose at the speeds of 90$-$150 km s$^{-1}$ before reaching the maximum apparent height of $\sim$115 Mm. Afterwards, it returned to the solar surface in a bumpy way at the speeds of 20$-$80 km s$^{-1}$. The rising and falling motions were clearly observed in the extreme-ultravoilet (EUV), UV, and H$α$ wavelengths. The failed eruption of the main part was associated with an M6.7 flare with a single hard X-ray source. The runaway part of the filament, however, separated from and rotated around the major part for $\sim$1 turn at the eastern leg before escaping from the corona, probably along large-scale open magnetic field lines. The ejection of the runaway part resulted in a very faint coronal mass ejection (CME) that propagated at an apparent speed of 214 km s$^{-1}$ in the outer corona. The filament eruption also triggered transverse kink-mode oscillation of the adjacent coronal loops in the same AR. The amplitude and period of the oscillation were 1.6 Mm and 225 s. Our results are important for understanding the mechanisms of partial filament eruptions and provide new constraints to theoretical models. The multiwavelength observations also shed light on space weather prediction.
description: 46 pages, 17 figures, 1 table, accepted for publication in ApJ
Read online: Train d'enfer pour ange rouge
Creators: name: Kent
Publisher: name: Zenodo
Year: 2024

description: Train d'enfer pour ange rouge pan Franck Thilliez

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Train d'enfer pour ange rouge

Franck Thilliez

Nb. de pages: 316

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782823800845

Editeur: 12-21

Date de parution: 2012

 

 

 

Télécharger le pdf à partir des livres de safari Train d'enfer pour ange rouge iBook 9782823800845

 

Overview

Un cadavre en morceaux est retrouvé aux environs de Paris. La victime a été décapitée et son corps martyrisé a fait l'objet d'une mise en scène défiant l'imagination. Le commissaire Franck Sharko est dépêché sur les lieux. Les ténèbres, il connaît : sa femme a disparu depuis six mois. Aucun signe de vie, aucune demande de rançon. Et cette nouvelle affaire, en réveillant le flic qui dormait en lui, va l'emmener au coeur de la nuit, loin, beaucoup trop loin...
Additional file 1 of Cost-effectiveness analysis of mesh fixation techniques for laparoscopic and open inguinal hernia surgeries
Creators: name: Techapongsatorn, Suphakarn
name: Tansawet, Amarit
name: Pattanaprateep, Oraluck
name: Attia, John
name: Mckay, Gareth J.
name: Thakkinstian, Ammarin
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 1: Supplement table 1. Multilevel mixed-effects linear regression model comparing co-variables with mean utility score among 6 intervention groups. Supplement table 2. Describe balance of co-variables among 6 intervention groups: treatment multi-logit model. Supplement table 3. Comparisons of utility scores among 6 interventions: treatment-effect model.
Surface Flux Modeling for Air Quality Applications
Creators: name: Ran, Limei
name: Pleim, Jonathan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: For many gasses and aerosols, dry deposition is an important sink of atmospheric mass. Dry deposition fluxes are also important sources of pollutants to terrestrial and aquatic ecosystems. The surface fluxes of some gases, such as ammonia, mercury, and certain volatile organic compounds, can be upward into the air as well as downward to the surface and therefore should be modeled as bi-directional fluxes. Model parameterizations of dry deposition in air quality models have been represented by simple electrical resistance analogs for almost 30 years. Uncertainties in surface flux modeling in global to mesoscale models are being slowly reduced as more field measurements provide constraints on parameterizations. However, at the same time, more chemical species are being added to surface flux models as air quality models are expanded to include more complex chemistry and are being applied to a wider array of environmental issues. Since surface flux measurements of many of these chemicals are still lacking, resistances are usually parameterized using simple scaling by water or lipid solubility and reactivity. Advances in recent years have included bi-directional flux algorithms that require a shift from pre-computation of deposition velocities to fully integrated surface flux calculations within air quality models. Improved modeling of the stomatal component of chemical surface fluxes has resulted from improved evapotranspiration modeling in land surface models
Evidence of extra-mixing in field giants as traced by lithium and carbon isotope ratio
Creators: name: Aguilera-Gómez, Claudia
name: Jones, Matías I.
name: Chanamé, Julio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Although not predicted by standard stellar evolution, the surface abundance of light elements, such as lithium (Li), carbon, and nitrogen, changes during the red giant branch (RGB) as a result of extra-mixing. This is associated usually with thermohaline mixing acting after the RGB bump. Peculiar Li-enriched RGB stars might also be related to either enhanced extra-mixing or pollution from external sources. We measure the Li abundance and carbon isotopic ratio 12C/13C in a sample of 166 field red giants with -0.3<[Fe/H]<0.2, targeted by the EXPRESS radial velocity program to analyze the effects of extra-mixing. Multiple-epoch observations needed for exoplanet detection are used to decrease the effects of telluric contamination in 12C/13C measurements. Due to the prevalence of upper limits, the Li abundance pattern is complicated to interpret, but the comparison between RGB and core-He burning giants shows effects of extra-mixing consistent with thermohaline. The most Li-enriched giant in the sample, classified as a RGB star close to the RGB bump, has low 12C/13C. Given that the 12C/13C should not be affected by planet engulfment, this does not seem to be the source of the high Li. There is a decreasing correlation between mass and 12C/13C in the RGB and an increasing correlation in the horizontal branch, which, once again, is consistent with thermohaline mixing. Our data also shows a correlation between 12C/13C and [Fe/H]. There is no evident impact of binarity either on Li or on 12C/13C. Our sample shows behavior consistent with additional mixing acting after the RGB bump. The 12C/13C adds new clues to describe extra-mixing, and could well be the best tool to study mixing in red giants. Additional measurements of 12C/13C in field stars would greatly improve our ability to compare with models and understand mixing mechanisms.
description: 15 pages, 11 figures, accepted for publication in A&A
Diversity of Sharp Restart
Creators: name: Eliazar, Iddo
name: Reuveni, Shlomi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: When applied to a stochastic process of interest, a restart protocol alters the overall statistical distribution of the process' completion time; thus, the completion-time's mean and randomness change. The explicit effect of restart on the mean is well understood, and it is known that: from a mean perspective, deterministic restart protocols -- termed sharp restart -- can out-perform any other restart protocol. However, little is known on the explicit effect of restart on randomness. This paper is the second in a duo exploring the effect of sharp restart on randomness: via a Boltzmann-Gibbs-Shannon entropy analysis in the first part, and via a diversity analysis in this part. Specifically, gauging randomness via diversity -- a measure that is intimately related to the Renyi entropy -- this paper establishes a set of universal criteria that determine: A) precisely when a sharp-restart protocol decreases/increases the diversity of completion times; B) the very existence of sharp-restart protocols that decrease/increase the diversity of completion times. Moreover, addressing jointly mean-behavior and randomness, this paper asserts and demonstrates when sharp restart has an aligned effect on the two (decreasing/increasing both), and when the effect is antithetical (decreasing one while increasing the other). The joint mean-diversity results require remarkably little information regarding the (original) statistical distributions of completion times, and are remarkably practical and easy to implement.
(3064) Ellen [Nicholson]
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.
title: Design of low-power low-noise integrated CMOS biosignal amplifier
title: Σχεδίαση CMOS ενισχυτή βιολογικών σημάτων χαμηλής ισχύος και χαμηλού θορύβου
Creators: name: Γκουβατσος Νικολαος
Publisher: name: Technical University of Crete
Year: 2020

description: In this work we will study the designing procedure of a low-power low-noise amplifier, with application in brain signals amplification. The bio-amplifier was implemented in a 90 nm CMOS process so that it is suitable for integration into multichannel recording implants. The recording electrode of the bio-amplifier is directly connected to the input of a low-noise amplifier which includes a Miller integrator in its feedback. The integrator, achieving a long time constant, gives the bio-amplifier the ability to reject unwanted low frequency signals as it sets its low cut-off frequency at 121.5 Hz. The large time constant of the integrator results from a structure of diode-connected transistors which employs a high resistance and allows the use of capacitors of reduced capacitance and area. The design of the amplifier under the constraints resulting from the low supply voltage of 90 nm technology, 1.2 V, was done with the inversion coefficient methodology (IC) that allows design in weak, moderate and strong inversion. The midband gain of the amplifier is 46.8 dB, its bandwidth is 10.84 kHz, the noise at the input 5.8 μVrms and the power dissipation 8.4 μW.
description: Σε αυτήν την εργασία θα μελετήσουμε τη διαδικασία σχεδίασης ενός ενισχυτή χαμηλής ισχύος και χαμηλού θορύβου με εφαρμογή στην ενίσχυση εγκεφαλικών σημάτων. Ο βιο-ενισχυτής υλοποιήθηκε σε CMOS τεχνολογία 90 nm έτσι ώστε να είναι κατάλληλος για ενσωμάτωση σε πολυκάναλα καταγραφικά εμφυτεύματα. Το ηλεκτρόδιο καταγραφής σημάτων του βιο-ενισχυτή συνδέεται άμεσα στην είσοδο ενός ενισχυτή χαμηλού θορύβου ο οποίος περιλαμβάνει στην ανάδρασή του έναν ολοκληρωτή Miller. Ο ολοκληρωτής, επιτυγχάνοντας μεγάλη χρονική σταθερά, προσδίδει στον βιο-ενισχυτή την ικανότητα απόρριψης ανεπιθύμητων σημάτων χαμηλών συχνοτήτων καθώς θέτει την χαμηλή συχνότητα αποκοπής του στα 121.5 Hz. Η μεγάλη χρονική σταθερά του ολοκληρωτή προκύπτει από μια δομή διοδικών τρανζίστορ που παρουσιάζει υψηλή αντίσταση και επιτρέπει την χρήση πυκνωτή μειωμένης χωρητικότητας και επιφάνειας. Η σχεδίαση του ενισχυτή υπό τους περιορισμούς που προκύπτουν από την χαμηλή τάση τροφοδοσίας της τεχνολογίας 90 nm, 1.2 V, έγινε με την μεθοδολογία του δείκτη αναστροφής (IC). Το κέρδος του ενισχυτή στη μέση ζώνη είναι 46.8 dB, το εύρος ζώνης του 10.84 kHz, ο θόρυβος στην είσοδό 5.8 μVrms και η κατανάλωση 8.4 μW.
The influence of European pollution on ozone in the Near East and northern Africa
Creators: name: Duncan, B. N.
name: Yoshida, Y.
name: West, J. J.
name: Ziemke, J. R.
name: Fiore, A. M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: We present a modeling study of the long-range transport of pollution from Europe, showing that European emissions regularly elevate surface ozone by as much as 20 ppbv in summer in northern Africa and the Near East. European emissions cause 50-150 additional violations per year (i.e. above those that would occur without European pollution) of the European health standard for ozone (8-h average >120 μg/m3 or ~60 ppbv) in northern Africa and the Near East. We estimate that European ozone pollution is responsible for 50 000 premature mortalities globally each year, of which the majority occurs outside of Europe itself, including 37% (19 000) in northern Africa and the Near East. Much of the pollution from Europe is exported southward at low altitudes in summer to the Mediterranean Sea, northern Africa and the Near East, regions with favorable photochemical environments for ozone production. Our results suggest that assessments of the human health benefits of reducing ozone precursor emissions in Europe should include effects outside of Europe, and that comprehensive planning to improve air quality in northern Africa and the Near East likely needs to address European emissions.
Quantum state merging with bound entanglement
Creators: name: Streltsov, Alexander
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Quantum state merging is one of the most important protocols in quantum information theory. In this task two parties aim to merge their parts of a pure tripartite state by making use of additional singlets while preserving correlations with a third party. We study a variation of this scenario where the shared state is not necessarily pure, and the merging parties have free access to local operations, classical communication, and PPT entangled states. We provide general conditions for a state to admit perfect merging, and present a family of fully separable states which cannot be perfectly merged if the merging parties have no access to additional singlets. We also show that free PPT entangled states do not give any advantage for merging of pure states, and the conditional entropy plays the same role as in standard quantum state merging quantifying the rate of additional singlets needed to perfectly merge the state.
description: 8 pages, 2 figures, published version
New high-precision strong lensing modeling of Abell 2744. Preparing for JWST observations
Creators: name: Bergamini, P.
name: Acebron, A.
name: Grillo, C.
name: Rosati, P.
name: Caminha, G. B.
name: Mercurio, A.
name: Vanzella, E.
name: Angora, G.
name: Brammer, G.
name: Meneghetti, M.
name: Nonino, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a new strong lensing (SL) model of the Hubble Frontier Fields galaxy cluster Abell 2744, at z=0.3072, by exploiting archival Hubble Space Telescope (HST) multi-band imaging and Multi Unit Spectroscopic Explorer (MUSE) follow-up spectroscopy. The lens model considers 90 spectroscopically confirmed multiple images (from 30 background sources), which represents the largest secure sample for this cluster field prior to the recently acquired James Webb Space Telescope observations. The inclusion of the sub-structures within several extended sources as model constraints allows us to accurately characterize the inner total mass distribution of the cluster and the position of the cluster critical lines. We include the lensing contribution of 225 cluster members, 202 of which are spectroscopically confirmed. We also measure the internal velocity dispersion of 85 cluster galaxies to independently estimate the role of the subhalo mass component in the lens model. We investigate the effect of the cluster environment on the total mass reconstruction of the cluster core with two different mass parameterizations. We consider the mass contribution from three external clumps, either based on previous weak-lensing studies, or extended HST imaging of luminous members around the cluster core. In the latter case, the observed positions of the multiple images are better reproduced, with a remarkable accuracy of 0.37", a factor of $\sim2$ smaller than previous lens models. We develop and make publicly available a Strong Lensing Online Tool (SLOT) to exploit the predictive power and the full statistical information of this and future models, through a simple graphical interface. We plan to apply our high-precision SL model to the first analysis of the GLASS-JWST-ERS program, specifically to measure the intrinsic physical properties of high-$z$ galaxies from robust magnification maps.
description: 14 pages, 9 figures, 4 tables
Download PDF Joséphine la cantatrice ou Le peuple des souris
Creators: name: Gray
Publisher: name: Zenodo
Year: 2024

description: Joséphine la cantatrice ou Le peuple des souris pan Franz Kafka

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Joséphine la cantatrice ou Le peuple des souris

Franz Kafka

Nb. de pages: 96

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782228924634

Editeur: Payot

Date de parution: 2019

 

 

 

Amazon livres audio télécharger ipod Joséphine la cantatrice ou Le peuple des souris MOBI PDF par Franz Kafka

 

Overview

Elle s'appelle Joséphine. C'est une diva. On l'adule sans pourtant apprécier son chant, ni même la musique en général. Elle est sans doute la dernière artiste de son pays en un temps où le seul horizon est celui du désastre. Mais quelle est donc cette société qui ne semble plus accorder à l'art et l'artiste qu'une fonction d'ornement ou d'oubli ? D'ailleurs, Joséphine chante-t-elle juste ? Ultime écrit de Kafka, publié un mois avant sa mort en 1924, ce récit limpide, épuré, sous lequel se lit le sourire doux de son auteur, a la force des grands testaments.
Read online: Physique-Chimie en MP/MP*  - Le cours complet
Creators: name: Gonzalez
Publisher: name: Zenodo
Year: 2024

description: Physique-Chimie en MP/MP* - Le cours complet pan Pascal Olive

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Physique-Chimie en MP/MP* - Le cours complet

Pascal Olive

Nb. de pages: 834

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782340084193

Editeur: Ellipses

Date de parution: 2023

 

 

 

Livres audio téléchargeables en français Physique-Chimie en MP/MP* - Le cours complet en francais

 

Overview

Ce livre contient le cours complet de Physique de MP/MP. Il fournit tous les rappels de première année et les outils nécessaires à la maîtrise des notions au programme, tout en exposant de nombreuses et fascinantes applications.
Read [Pdf]> Saving Us: A Climate Scientist's Case for Hope and Healing in a Divided World by Katharine Hayhoe
Creators: name: Hypes
Publisher: name: Zenodo
Year: 2024

description: Saving Us: A Climate Scientist's Case for Hope and Healing in a Divided World by Katharine Hayhoe

 

 

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Saving Us: A Climate Scientist's Case for Hope and Healing in a Divided World

Katharine Hayhoe

Page: 320

Format: pdf, ePub, mobi, fb2

ISBN: 9781982143848

Publisher: Atria/One Signal Publishers

 

Ebooks epub format free download Saving Us: A Climate Scientist's Case for Hope and Healing in a Divided World RTF (English literature)

Overview

United Nations Champion of the Earth, climate scientist, and evangelical Christian Katharine Hayhoe changes the debate on how we can save our future in this nationally bestselling “optimistic view on why collective action is still possible—and how it can be realized” (The New York Times). Called “one of the nation’s most effective communicators on climate change” by The New York Times, Katharine Hayhoe knows how to navigate all sides of the conversation on our changing planet. A Canadian climate scientist living in Texas, she negotiates distrust of data, indifference to imminent threats, and resistance to proposed solutions with ease. Over the past fifteen years Hayhoe has found that the most important thing we can do to address climate change is talk about it—and she wants to teach you how. In Saving Us, Hayhoe argues that when it comes to changing hearts and minds, facts are only one part of the equation. We need to find shared values in order to connect our unique identities to collective action. This is not another doomsday narrative about a planet on fire. It is a multilayered look at science, faith, and human psychology, from an icon in her field—recently named chief scientist at The Nature Conservancy. Drawing on interdisciplinary research and personal stories, Hayhoe shows that small conversations can have astonishing results. Saving Us leaves us with the tools to open a dialogue with your loved ones about how we all can play a role in pushing forward for change.
Additional file 2 of Cost-effectiveness analysis of mesh fixation techniques for laparoscopic and open inguinal hernia surgeries
Creators: name: Techapongsatorn, Suphakarn
name: Tansawet, Amarit
name: Pattanaprateep, Oraluck
name: Attia, John
name: Mckay, Gareth J.
name: Thakkinstian, Ammarin
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 2: Supplement figure 1. Overlap plot LT = laparoscopic inguinal hernia repair using tacker, LG = laparoscopic inguinal hernia repair using glue, LSG = laparoscopic inguinal hernia repair using self-gripping mesh, OS = open inguinal hernia repair using suture, OG = open inguinal hernia repair using glue, OSG = open inguinal hernia repair using self-gripping mesh Supplement figure 2. Covariate balance density LT = laparoscopic inguinal hernia repair using tacker, LG = laparoscopic inguinal hernia repair using glue, LSG = laparoscopic inguinal hernia repair using self-gripping mesh, OS = open inguinal hernia repair using suture, OG = open inguinal hernia repair using glue, OSG = open inguinal hernia repair using self-gripping mesh. Supplement figure 3. Incremental cost-effectiveness (ICER) plane of utility improvement. Supplement figure 4. Incremental cost-effective (ICER) plane in hernia recurrence case prevented from cohort study
The clustering properties of AGNs/quasars in CatWISE2020 catalog
Creators: name: Tiwari, Prabhakar
name: Zhao, Gong-Bo
name: Nusser, Adi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the clustering properties of 1,307,530 AGNs/quasars in the CatWISE2020 catalog prepared using the Wide-field Infrared Survey Explorer (WISE) and Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) survey data. For angular moments $\ell \gtrapprox 10$ ($\lessapprox 18^\circ$) down to non-linear scales, the results are in agreement with the standard $Λ$CDM cosmology, with a galaxy bias roughly matching that of the NRAO VLA Sky Survey (NVSS) AGNs. We further explore the redshift dependence of the fraction of infrared bright AGNs on stellar mass, $f_{\rm IB} \sim M_*^{α_0 + α_1 z}$, and find $α_1=1.27^{+0.25}_{-0.30}$, ruling out a non-evolution hypothesis at $\approx 4.6σ$ confidence level. The results are consistent with the measurements obtained with NVSS AGNs, though considerably more precise thanks to the significantly higher number density of objects in CatWISE2020. The excess dipole and high clustering signal above angular scale $\approx 18^\circ$ remain anomalous.
description: 11 pages, 11 figures
Effect of regional precursor emission controls on long-range ozone transport – Part 1: Short-term changes in ozone air quality
Creators: name: West, J. J.
name: Horowitz, L. W.
name: Fiore, A. M.
name: Naik, V.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Observations and models demonstrate that ozone and its precursors can be transported between continents and across oceans. We model the influences of 10% reductions in anthropogenic nitrogen oxide (NOx) emissions from each of nine world regions on surface ozone air quality in that region and all other regions. In doing so, we quantify the relative importance of long-range transport between all source-receptor pairs, for direct short-term ozone changes. We find that for population-weighted concentrations during the three-month "ozone-season", the strongest inter-regional influences are from Europe to the Former Soviet Union, East Asia to Southeast Asia, and Europe to Africa. The largest influences per unit of NOx reduced, however, are seen for source regions in the tropics and Southern Hemisphere, which we attribute mainly to greater sensitivity to changes in NOx in the lower troposphere, and secondarily to increased vertical convection to the free troposphere in tropical regions, allowing pollutants to be transported further. Results show, for example, that NOx reductions in North America are ~20% as effective per unit NOx in reducing ozone in Europe during summer, as NOx reductions from Europe itself. Reducing anthropogenic emissions of non-methane volatile organic compounds (NMVOCs) and carbon monoxide (CO) by 10% in selected regions, can have as large an impact on long-range ozone transport as NOx reductions, depending on the source region. We find that for many source-receptor pairs, the season of greatest long-range influence does not coincide with the season when ozone is highest in the receptor region. Reducing NOx emissions in most source regions causes a larger decrease in export of ozone from the source region than in ozone production outside of the source region.
Heavy tails in the distribution of time-to-solution for classical and quantum annealing
Creators: name: Steiger, Damian S.
name: Rønnow, Troels F.
name: Troyer, Matthias
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For many optimization algorithms the time-to-solution depends not only on the problem size but also on the specific problem instance and may vary by many orders of magnitude. It is then necessary to investigate the full distribution and especially its tail. Here we analyze the distributions of annealing times for simulated annealing and simulated quantum annealing (by path integral quantum Monte Carlo) for random Ising spin glass instances. We find power-law distributions with very heavy tails, corresponding to extremely hard instances, but far broader distributions - and thus worse performance for hard instances - for simulated quantum annealing than for simulated annealing. Fast, non-adiabatic, annealing schedules can improve the performance of simulated quantum annealing for very hard instances by many orders of magnitude.
Dissipation-driven formation of entangled dark states in strongly-coupled inhomogeneous many-qubit systems in solid-state nanocavities
Creators: name: Tokman, Mikhail
name: Behne, Alex
name: Torres, Brandon
name: Erukhimova, Maria
name: Wang, Yongrui
name: Belyanin, Alexey
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study quantum dynamics of many-qubit systems strongly coupled to a quantized electromagnetic cavity field in the presence of decoherence and dissipation for both fermions and cavity photons, and taking into account the varying coupling strength of different qubits to the cavity field and the spread of their transition frequencies. Compact analytic solutions for time-dependent quantum state amplitudes and observables are derived for a broad class of open quantum systems in Lindblad approximation with the use of the stochastic Schroedinger equation approach. We show that depending on the initial quantum state preparation, an ensemble of qubits can evolve into a rich variety of many-qubit entangled states with destructive or constructive interference between the qubits. In particular, when only a small fraction of qubits is initially excited, the dissipation in a cavity will inevitably drive the system into robust dark states that are completely decoupled from the cavity and live much longer than the decay time of the cavity field. We also determine the conditions under which coherent coupling to the quantized cavity field overcomes the dephasing caused by a spread of transition frequencies in multi-qubit systems and leads to the formation of a decoupled dark state.
description: 32 pages, 13 figures. arXiv admin note: text overlap with arXiv:2105.14674
{epub download} Velvet Ants of North America by Kevin Williams, Aaron D. Pan, Joseph S. Wilson
Creators: name: Gallant
Publisher: name: Zenodo
Year: 2024

description: Velvet Ants of North America by Kevin Williams, Aaron D. Pan, Joseph S. Wilson

 

 

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Velvet Ants of North America

Kevin Williams, Aaron D. Pan, Joseph S. Wilson

Page: 440

Format: pdf, ePub, mobi, fb2

ISBN: 9780691212043

Publisher: Princeton University Press

 

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Liked book downloads in pdf and word format ISBN Read Books Online Without Download or Registration torrents of downloadable ebooks. Publication Date of this book EPUB Velvet Ants of North America By Kevin Williams, Aaron D. Pan, Joseph S. Wilson PDF Download. Publication Date of this book PDF Velvet Ants of North America by Kevin Williams, Aaron D. Pan, Joseph S. Wilson EPUB Download. Reviews in epub, pdf and mobi formats. EPUB Velvet Ants of North America By Kevin Williams, Aaron D. Pan, Joseph S. Wilson PDF Download review, torrent download locations. Read it on your Kindle device, PC, phones or tablets... New eBook was published downloads zip PDF Velvet Ants of North America by Kevin Williams, Aaron D. Pan, Joseph S. Wilson EPUB Download Audio Download, Unabridged. Begin reading Velvet Ants of North America EPUB PDF Download Read Kevin Williams, Aaron D. Pan, Joseph S. Wilson plot. Rate this book Velvet Ants of North America EPUB PDF Download Read Kevin Williams, Aaron D. Pan, Joseph S. Wilson novels, fiction, non-fiction. Torrent PDF Velvet Ants of North America by Kevin Williams, Aaron D. Pan, Joseph S. Wilson EPUB Download and online reading may begin.

Format PDF | EPUB | MOBI ZIP RAR files. Formats Available : PDF, ePub, Mobi, doc Total Reads - Total Downloads - File Size Velvet Ants of North America EPUB PDF Download Read Kevin Williams, Aaron D. Pan, Joseph S. Wilson. New eBook was published downloads zip PDF Velvet Ants of North America by Kevin Williams, Aaron D. Pan, Joseph S. Wilson EPUB Download Audio Download, Unabridged. Share the link to download ebook EPUB Velvet Ants of North America By Kevin Williams, Aaron D. Pan, Joseph S. Wilson PDF Download Kindle edition free. Today I'll share to you the link to PDF Velvet Ants of North America by Kevin Williams, Aaron D. Pan, Joseph S. Wilson EPUB Download free new ebook. Begin reading PDF Velvet Ants of North America by Kevin Williams, Aaron D. Pan, Joseph S. Wilson EPUB Download plot.
(3066) Ellen Oldfield
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.
Control parameter dependence of fluctuation near jamming
Creators: name: Ikeda, Harukuni
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The fluctuations of the physical quantities play a central role to characterize the critical phenomena. Here, we report that the nature of the fluctuation highly depends on the control parameter near the jamming transition point $φ_J$. We show that the fluctuations do not diverge when the pressure is used as the control parameter. On the contrary, if the distance to the transition point $φ_J$ is used as the control parameter, the fluctuations show the power-law divergence.
description: 2 pages, 4 figures
Covid-19 Questionnaire
Creators: name: Hendrickx, Hans
name: Daqiq, Omid
Publisher: name: figshare
Year: 2020
Subjects: subject: Health Care
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: 170106 Health, Clinical and Counselling Psychology
subject: FOS: Psychology
subject: 80702 Health Informatics
subject: FOS: Media and communications
subject: 111704 Community Child Health
subject: 111709 Health Care Administration
subject: 111708 Health and Community Services
subject: 111711 Health Information Systems (incl. Surveillance)
subject: 111705 Environmental and Occupational Health and Safety
subject: 130209 Medicine, Nursing and Health Curriculum and Pedagogy
subject: FOS: Educational sciences
subject: 140208 Health Economics
subject: FOS: Economics and business
subject: 111702 Aged Health Care
subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences
subject: 160508 Health Policy
subject: FOS: Political science
subject: 111717 Primary Health Care

description: This online production describes how patients can create their Medical History in the context of the Covid-19 pandemic.
For correct medical assessment, the physician needs access to the full medical context of each patient. Because of time pressure at all healthcare levels, Covid-19 makes that an urgent problem; physicians often neglect that pivotal task. Patients can quickly help by creating their Medical History, including Current Complaints before each medical appointment.
Medical Questionnaire | Covid-19 | Open Source | Patients as Scribe-Intern | Best Care | Mass Data Collection
Reactive nitrogen in Mexico City and its relation to ozone-precursor sensitivity: results from photochemical models
Creators: name: West, J. J.
name: Sillman, S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: We use results of a 3-D photochemistry/transport model for ozone formation in Mexico City during events in 1997 to investigate ambient concentrations of reactive nitrogen in relation to ozone-precursor sensitivity. Previous results from other locations suggest that ratios such as O3/NOy and H2O2/HNO3 might provide measurement-based indicators for NOx-sensitive or VOC-sensitive conditions. Mexico City presents a different environment due to its high concentrations of VOC and high level of pollutants in general. The model predicts a correlation between PAN and O3 with relatively high PAN/O3 (0.07), which is still lower than measured values. The model PAN is comparable with results from a model for Paris but much higher than were found in Nashville in both models and measurements. The difference is due in part to the lower temperature in Mexico City relative to Nashville. Model HNO3 in Mexico City is unusually low for an urban area and PAN/HNO3 is very high, probably due to the high ratio of reactivity-weighted VOC to NOx. The model predicts that VOC-sensitive chemistry in Mexico is associated with high NOx, NOy and NOx/NOy and with low O3/NOy and H2O2/HNO3, suggesting that these indicators work well for Mexico City. The relation between ozone-precursor sensitivity and either O3/NOz or O3/HNO3 is more ambiguous. VOC-sensitive conditions are associated with higher O3/HNO3 than would be found in NOx-sensitive conditions, but model O3/HNO3 associated with both NOx-sensitive and VOC-sensitive chemistry is higher in Mexico than in other cities. The model predicts a mixed pattern of ozone-precursor sensitivity in Mexico City, with VOC-sensitive conditions in the morning and NOx-sensitive in the afternoon, in contrast to results from other models for more recent events that predicted strongly VOC- sensitive conditions throughout the day. The difference in predicted ozone-precursor sensitivity is most likely due to different emission rates and to changes in emissions over time. The model with mixed sensitivity predicts much lower ambient NOx and NOx/NOy than the strongly VOC-sensitive model.
Effect of relative humidity on SOA formation from isoprene/NO photooxidation: enhancement of 2-methylglyceric acid and its corresponding oligoesters under dry conditions
Creators: name: Bapat, J.
name: Surratt, J. D.
name: Kamens, R. M.
name: Zhang, H.
name: Lin, Y. H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: The effect of relative humidity (RH) on secondary organic aerosol (SOA) formation from the photooxidation of isoprene under initially high nitric oxide (NO) conditions (i.e., isoprene/NO ~3) was investigated in a dual outdoor smog chamber. Based upon particle volume concentration measurements and the detailed chemical characterization of isoprene SOA using gas chromatography/mass spectrometry (GC/MS) and ultra performance liquid chromatography/electrospray ionization high-resolution quadrupole time-of-flight mass spectrometry (UPLC/ESI-HR-Q-TOFMS), enhanced SOA formation was observed under lower RH conditions (15-40 %) compared to higher RH conditions (40-90 %). 2-methylglyceric acid (2-MG) and its corresponding oligoesters, which have been previously shown to form from further oxidation of methacryloylperoxynitrate (MPAN), were enhanced in the particle-phase under lower RH conditions. In addition, an abundant unknown SOA tracer likely derived from the further oxidation of MPAN was detected and enhanced under lower RH conditions. In contrast, the 2-methyltetrols, which are known to mainly form from the reactive uptake of isoprene epoxydiols (IEPOX) under low-NO conditions in the presence of acidified aerosol, did not substantially vary under different RH conditions; however, isoprene-derived organosulfates were found to be enhanced under high-RH conditions, indicating the likely importance of the aqueous aerosol phase in their formation. Based upon the detailed chemical characterization results, particle-phase organic esterification is tentatively proposed to explain the observed enhancements of isoprene SOA mass under lower RH conditions. Alternative mechanisms explaining the enhancement of 2-MG and its corresponding oligoesters cannot be completely ruled out. This is one of only a few chamber studies that have examined the effect of RH on isoprene SOA formation. In comparison to our recent results obtained from aromatic SOA formation, the effect of RH on isoprene SOA formation is reversed. The results of this study highlight the importance of elucidating the key reactive intermediates that lead to SOA formation, especially since RH likely affects their ability in forming SOA. Furthermore, ignoring the effects of RH may significantly affect the accuracy of both regional and global SOA models.
Robust PI Passivity-based Control of Nonlinear Systems: Application to Port-Hamiltonian Systems and Temperature Regulation
Creators: name: Aranovskiy, Stanislav
name: Ortega, Romeo
name: Cisneros, Rafael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper deals with the problem of control of partially known nonlinear systems, which have an open-loop stable equilibrium, but we would like to add a PI controller to regulate its behavior around another operating point. Our main contribution is the identification of a class of systems for which a globally stable PI can be designed knowing only the systems input matrix and measuring only the actuated coordinates. The construction of the PI is done invoking passivity theory. The difficulties encountered in the design of adaptive PI controllers with the existing theoretical tools are also discussed. As an illustration of the theory, we consider port--Hamiltonian systems and a class of thermal processes.
description: An abridged version will appear in American Control Conference, ACC'15