cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigating Bias with a Synthetic Data Generator: Empirical Evidence and Philosophical Interpretation
Creators: name: Castelnovo, Alessandro
name: Crupi, Riccardo
name: Inverardi, Nicole
name: Regoli, Daniele
name: Cosentini, Andrea
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (stat.ML)
subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Machine learning applications are becoming increasingly pervasive in our society. Since these decision-making systems rely on data-driven learning, risk is that they will systematically spread the bias embedded in data. In this paper, we propose to analyze biases by introducing a framework for generating synthetic data with specific types of bias and their combinations. We delve into the nature of these biases discussing their relationship to moral and justice frameworks. Finally, we exploit our proposed synthetic data generator to perform experiments on different scenarios, with various bias combinations. We thus analyze the impact of biases on performance and fairness metrics both in non-mitigated and mitigated machine learning models.
description: 8 pages, 2 figures. short version
Spectral decomposition of atomic structures in heterogeneous cryo-EM
Creators: name: Esteve-Yagüe, Carlos
name: Diepeveen, Willem
name: Öktem, Ozan
name: Schönlieb, Carola-Bibiane
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Optimization and Control (math.OC)
subject: Quantitative Methods (q-bio.QM)
subject: Applications (stat.AP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: We consider the problem of recovering the three-dimensional atomic structure of a flexible macromolecule from a heterogeneous cryo-EM dataset. The dataset contains noisy tomographic projections of the electrostatic potential of the macromolecule, taken from different viewing directions, and in the heterogeneous case, each image corresponds to a different conformation of the macromolecule. Under the assumption that the macromolecule can be modelled as a chain, or discrete curve (as it is for instance the case for a protein backbone with a single chain of amino-acids), we introduce a method to estimate the deformation of the atomic model with respect to a given conformation, which is assumed to be known a priori. Our method consists on estimating the torsion and bond angles of the atomic model in each conformation as a linear combination of the eigenfunctions of the Laplace operator in the manifold of conformations. These eigenfunctions can be approximated by means of a well-known technique in manifold learning, based on the construction of a graph Laplacian using the cryo-EM dataset. Finally, we test our approach with synthetic datasets, for which we recover the atomic model of two-dimensional and three-dimensional flexible structures from noisy tomographic projections.
description: 35 pages,20 figures
Broadcasting solutions on networked systems of phase oscillators
Creators: name: Nguyen, Tung T.
name: Budzinski, Roberto C.
name: Pasini, Federico W.
name: Delabays, Robin
name: Mináč, Ján
name: Muller, Lyle E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Networked systems have been used to model and investigate the dynamical behavior of a variety of systems. For these systems, different levels of complexity can be considered in the modeling procedure. On one hand, this can offer a more realistic and rich modeling option. On the other hand, it can lead to intrinsic difficulty in analyzing the system. Here, we present an approach to investigate the dynamics of Kuramoto oscillators on networks with different levels of connections: a network of networks. To do so, we utilize a construction in network theory known as the join of networks, which represents ``intra-area" and ``inter-area" connections. This approach provides a reduced representation of the original, multi-level system, where both systems have equivalent dynamics. Then, we can find solutions for the reduced system and broadcast them to the original network of networks. Moreover, using the same idea we can investigate the stability of these states, where we can obtain information on the Jacobian of the multi-level system by analyzing the reduced one. This approach is general for arbitrary connection schemes between nodes within the same area. Finally, our work opens the possibility of studying the dynamics of networked systems using a simpler representation, thus leading to a better understanding of the dynamical behavior of these systems.
Figure S1. Pictures of the simple complex mating arenas. from The purging of deleterious mutations in simple and complex mating environments.
Creators: name: Colpitts, Julie
name: Williscroft, Darla
name: Harmandeep Singh Sekhon
name: Rundle, Howard D.
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Overhead views of the simple and complex mating arenas with the lids removed and inverted.
Quantifying and monitoring overdiagnosis in cancer screening: a systematic review of methods
Creators: name: Coletti, Russell J.
name: Harris, Russell P.
name: Carter, Jamie L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Objective To determine the optimal method for quantifying and monitoring overdiagnosis in cancer screening over time.Design Systematic review of primary research studies of any design that quantified overdiagnosis from screening for nine types of cancer. We used explicit criteria to critically appraise individual studies and assess strength of the body of evidence for each study design (double blinded review), and assessed the potential for each study design to accurately quantify and monitor overdiagnosis over time.Data sources PubMed and Embase up to 28 February 2014; hand searching of systematic reviews.Eligibility criteria for selecting studies English language studies of any design that quantified overdiagnosis for any of nine common cancers (prostate, breast, lung, colorectal, melanoma, bladder, renal, thyroid, and uterine); excluded case series, case reports, and reviews that only reported results of other studies.Results 52 studies met the inclusion criteria. We grouped studies into four methodological categories: (1) follow-up of a well designed randomized controlled trial (n=3), which has low risk of bias but may not be generalizable and is not suitable for monitoring; (2) pathological or imaging studies (n=8), drawing conclusions about overdiagnosis by examining biological characteristics of cancers, a simple design limited by the uncertain assumption that the measured characteristics are highly correlated with disease progression; (3) modeling studies (n=21), which can be done in a shorter time frame but require complex mathematical equations simulating the natural course of screen detected cancer, the fundamental unknown question; and (4) ecological and cohort studies (n=20), which are suitable for monitoring over time but are limited by a lack of agreed standards, by variable data quality, by inadequate follow-up time, and by the potential for population level confounders. Some ecological and cohort studies, however, have addressed these potential weaknesses in reasonable ways.Conclusions Well conducted ecological and cohort studies in multiple settings are the most appropriate approach for quantifying and monitoring overdiagnosis in cancer screening programs. To support this work, we need internationally agreed standards for ecological and cohort studies and a multinational team of unbiased researchers to perform ongoing analysis.
Quantum measurements constrained by the third law of thermodynamics
Creators: name: Mohammady, M. Hamed
name: Miyadera, Takayuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the quantum regime, the third law of thermodynamics implies the unattainability of pure states. As shown recently, such unattainability implies that a unitary interaction between the measured system and a measuring apparatus can never implement an ideal projective measurement. In this paper, we introduce an operational formulation of the third law for the most general class of physical transformations, the violation of which is both necessary and sufficient for the preparation of pure states. Subsequently, we investigate how such a law constrains measurements of general observables, or positive operator valued measures. We identify several desirable properties of measurements which are simultaneously enjoyed by ideal projective measurements -- and are hence all ruled out by the third law in such a case -- and determine if the third law allows for these properties to obtain for general measurements of general observables and, if so, under what conditions. It is shown that while the third law rules out some of these properties for all observables, others may be enjoyed by observables that are sufficiently "unsharp".
MUERTE EN VEGUETA leer epub CHRISTIAN SANTANA HERNANDEZ
Creators: name: Garney
Publisher: name: Zenodo
Year: 2024

description: MUERTE EN VEGUETA de CHRISTIAN SANTANA HERNANDEZ

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Ficha técnica

MUERTE EN VEGUETA

CHRISTIAN SANTANA HERNANDEZ

Idioma: CASTELLANO

Formatos: Pdf, ePub, MOBI, FB2

ISBN: 9788412743937

Editorial: COSECHA NEGRA EDICIONES

Año de edición: 2023

 

 

 

 

 

Libros en pdf para descargar gratis. MUERTE EN VEGUETA MOBI

 

Overview

Esta historia tiene tres protagonistas: un asesino despiadado, un policía de la vieja escuela y el barrio de Vegueta. Las calles adoquinadas del casco histórico de Las Palmas de Gran Canaria son el escenario de una oleada de crímenes con una gran carga simbólica y literaria. ¿Quien será la mano ejecutora de esta salvaje escalada de violencia? ¿Tienen algo en común sus víctimas? En este libro, Christian Santana Hernández explora todos sus lugares fetiche. Quizá por ello, estas páginas destilan verdad. Quizá por ello, ‘Muerte en Vegueta’ sea su obra más personal.
Risk of cancer from occupational exposure to ionising radiation: retrospective cohort study of workers in France, the United Kingdom, and the United States (INWORKS)
Creators: name: Gillies, Michael
name: Haylock, Richard
name: Thierry-Chef, Isabelle
name: Schubauer-Berigan, Mary K.
name: Laurier, Dominique
name: Daniels, Robert D.
name: Hamra, Ghassan B.
name: Kesminiene, Ausrele
name: Richardson, David B.
name: Moissonnier, Monika
name: Leuraud, Klervi
name: Cardis, Elisabeth
name: O'Hagan, Jacqueline A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Study question Is protracted exposure to low doses of ionising radiation associated with an increased risk of solid cancer?Methods In this cohort study, 308 297 workers in the nuclear industry from France, the United Kingdom, and the United States with detailed monitoring data for external exposure to ionising radiation were linked to death registries. Excess relative rate per Gy of radiation dose for mortality from cancer was estimated. Follow-up encompassed 8.2 million person years. Of 66 632 known deaths by the end of follow-up, 17 957 were due to solid cancers.Study answer and limitations Results suggest a linear increase in the rate of cancer with increasing radiation exposure. The average cumulative colon dose estimated among exposed workers was 20.9 mGy (median 4.1 mGy). The estimated rate of mortality from all cancers excluding leukaemia increased with cumulative dose by 48% per Gy (90% confidence interval 20% to 79%), lagged by 10 years. Similar associations were seen for mortality from all solid cancers (47% (18% to 79%)), and within each country. The estimated association over the dose range of 0-100 mGy was similar in magnitude to that obtained over the entire dose range but less precise. Smoking and occupational asbestos exposure are potential confounders; however, exclusion of deaths from lung cancer and pleural cancer did not affect the estimated association. Despite substantial efforts to characterise the performance of the radiation dosimeters used, the possibility of measurement error remains. What this study adds The study provides a direct estimate of the association between protracted low dose exposure to ionising radiation and solid cancer mortality. Although high dose rate exposures are thought to be more dangerous than low dose rate exposures, the risk per unit of radiation dose for cancer among radiation workers was similar to estimates derived from studies of Japanese atomic bomb survivors. Quantifying the cancer risks associated with protracted radiation exposures can help strengthen the foundation for radiation protection standards. Funding, competing interests, data sharing Support from the US Centers for Disease Control and Prevention; Ministry of Health, Labour and Welfare of Japan; Institut de Radioprotection et de Sûreté Nucléaire; AREVA; Electricité de France; US National Institute for Occupational Safety and Health; US Department of Energy; and Public Health England. Data are maintained and kept at the International Agency for Research on Cancer.
Table S1. Initial geneotype and allele frequencies. from The purging of deleterious mutations in simple and complex mating environments.
Creators: name: Colpitts, Julie
name: Williscroft, Darla
name: Harmandeep Singh Sekhon
name: Rundle, Howard D.
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Initial genotype and allele frequencies in replicate experimental populations of each mutation upon their founding
[Kindle] Ne tirez pas sur l'oiseau moqueur download
Creators: name: Evans
Publisher: name: Zenodo
Year: 2024

description: Ne tirez pas sur l'oiseau moqueur pan Harper Lee

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Ne tirez pas sur l'oiseau moqueur

Harper Lee

Nb. de pages: 447

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782253115847

Editeur: LGF/Livre de Poche

Date de parution: 2006

 

 

 

Ebook pour iit jee téléchargement gratuit Ne tirez pas sur l'oiseau moqueur 9782253115847 par Harper Lee

 

Overview

Dans une petite ville d'Alabama, à l'époque de la Grande Dépression, Atticus Finch élève seul ses deux enfants, Jem et Scout. Avocat intègre et rigoureux, il est commis d'office pour défendre un Noir accusé d'avoir violé une Blanche. Ce bref résumé peut expliquer pourquoi ce livre, publié en 1960 - au coeur de la lutte pour les droits civiques des Noirs aux Etats-Unis -, connut un tel succès. Mais comment ce roman est-il devenu un livre culte dans le monde entier ? C'est que, tout en situant son sujet en Alabama dans les années 1930, Harper Lee a écrit un roman universel sur l'enfance. Racontée par Scout avec beaucoup de drôlerie, cette histoire tient du conte, de la court story américaine et du roman initiatique. Couronné par le prix Pulitzer en 1961, Ne tirez pas sur l'oiseau moqueur s'est vendu à plus de 30 millions d'exemplaires dans le monde entier.
Kerr black holes with synchronised Proca hair: lensing, shadows and EHT constraints
Creators: name: Sengo, Ivo
name: Cunha, Pedro V. P.
name: Herdeiro, Carlos A. R.
name: Radu, Eugen
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the gravitational lensing by spinning Proca stars and the shadows and lensing by Kerr black holes (BHs) with synchronised Proca hair, discussing both theoretical aspects and observational constraints from the Event Horizon Telescope (EHT) M87* and Sgr A* data. On the theoretical side, this family of BHs interpolates between Kerr-like solutions -- exhibiting a similar optical appearance to that of Kerr BHs -- to very non-Kerr like solutions, exhibiting exotic features such as cuspy shadows, egg-like shadows and ghost shadows. We interpret these features in terms of the structure of the fundamental photon orbits, for which different branches exist, containing both stable and unstable orbits, with some of the latter not being shadow related. On the observational side, we show that current EHT constraints are compatible with all such BHs that could form from the growth of the superradiant instability of Kerr BHs. Unexpectedly, given the (roughly) 10% error bars in the EHT data -- and in contrast to their scalar cousin model --, some of the BHs with up to 40% of their energy in their Proca hair are compatible with the current data. We estimate the necessary resolution of future observations to better constrain this model.
description: 36 pages, 20 figures + appendix
(3014) Ethel Adela Hirst
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.
Chemical Defenses, Protein Content, and Susceptibility to Herbivory of Diploid vs. Haploid Stages of the Isomorphic Brown Alga Dictyota ciliolata (Phaeophyta)
Creators: name: Cronin, G.
name: Hay, M. E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: Seaweeds with free-living diploid and haploid stages might express recessive traits during haploid stages, or exhibit other differences, that would allow those stages to differ in fitness under different environmental conditions. Heteromorphic seaweeds are well known to have variable ecological traits associated with their morphological differences, but ecological differences among isomorphic stages have rarely been investigated. The chemically defended brown alga Diclyola ciliolala has a life history with isomorphic alternation of generations, allowing us to assess how chemical traits and susceptibility to herbivory differ among stages. Herbivorous amphipods and sea urchins consumed similar amounts of diploid sporophytes and haploid female and male gametophytes. Concomitant with similar palatability, the different life stages had similar concentrations of soluble protein and levels of chemical defenses. Thus, in addition to morphological similari-ties, the life stages of D. cilio/(/ta appear to share these ecological similarities.
The high energy spectrum of 3C 273
Creators: name: Esposito, V.
name: Walter, R.
name: Jean, P.
name: Tramacere, A.
name: Türler, M.
name: Lähteenmäki, A.
name: Tornikoski, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Aims. The high energy spectrum of 3C 273 is usually understood in terms of inverse-Compton emission in a relativistic leptonic jet. This model predicts variability patterns and delays that could be tested with simultaneous observations from the radio to the GeV range. Methods. The instruments IBIS, SPI, JEM-X on board INTEGRAL, PCA on board RXTE, and LAT on board Fermi have enough sensitivity to follow the spectral variability of 3C 273 from the keV to the GeV. We looked for correlations between the different energy bands, including radio data at 37 GHz collected at the Metsähovi Radio Observatory and built quasi-simultaneous multiwavelength spectra in the high energy domain when the source is flaring either in the X-rays or in the γ rays. Results. Both temporal and spectral analysis suggest a two-component model to explain the complete high energy spectrum. X-ray emission is likely dominated by a Seyfert-like component while the γ-ray emission is dominated by a blazar-like component produced by the relativistic jet. The variability of the blazar-like component is discussed, comparing the spectral parameters in the two different spectral states. Changes of the electron Lorentz factor are found to be the most likely source of the observed variability.
description: 11 pages, 9 figures
Figure S1. Pictures of the simple complex mating arenas. from The purging of deleterious mutations in simple and complex mating environments
Creators: name: Colpitts, Julie
name: Williscroft, Darla
name: Harmandeep Singh Sekhon
name: Rundle, Howard D.
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Overhead views of the simple and complex mating arenas with the lids removed and inverted.
[Kindle] De la part de la princesse morte download
Creators: name: Adams
Publisher: name: Zenodo
Year: 2024

description: De la part de la princesse morte pan Kénizé Mourad

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De la part de la princesse morte

Kénizé Mourad

Nb. de pages: 601

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782221052181

Editeur: Robert Laffont

Date de parution: 1987

 

 

 

Télécharger les ebooks google pdf De la part de la princesse morte MOBI iBook CHM 9782221052181 (Litterature Francaise) par Kénizé Mourad

 

Overview

" Ceci est l'histoire de ma mère, la princesse Selma, née dans un palais d'Istanbul... " Ce pourrait être le début d'un conte ; c'est une histoire authentique, qui commence en 1918 à la cour du dernier sultan de l'Empire ottoman. Selma a sept ans quand elle voit s'écrouler cet Empire qui a fait trembler l'Europe. Condamnée à l'exil, la famille impériale s'installe au Liban. Selma, qui a perdu à la fois son pays et son père, y sera " la princesse aux bas reprisés ". C'est à Beyrouth qu'elle grandira et rencontrera son premier amour, un jeune chef druze ; amour tôt brisé. Selma acceptera alors d'épouser un rajah indien qu'elle n'a jamais vu. Aux Indes, elle vivra les fastes des maharadjahs, les derniers jours de l'Empire britannique et la lutte pour l'indépendance, menée par Gandhi. Mais là, comme au Liban, elle reste " l'étrangère ". Rejetée par ce peuple qu'elle s'était pris à aimer, elle s'enfuira à Paris. Elle y trouvera enfin le véritable amour. La guerre l'en séparera, et elle mourra dans la misère, à vingt-neuf ans, après avoir donné naissance à une fille : l'auteur de ce récit. Pour la première fois la fin de l'Empire ottoman nous est racontée de l'intérieur des palais, tandis que l'on découvre le Liban du mandat français à travers les grandes familles de Beyrouth, et l'Inde féodale par les yeux de ses paysans et des princes. Il est rare qu'un livre allie le cœur et l'Histoire de manière aussi intime.
Online Read Ebook Captive Tome 1.5
Creators: name: Duncan
Publisher: name: Zenodo
Year: 2024

description: Captive Tome 1.5 pan Sarah Rivens

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Captive Tome 1.5

Sarah Rivens

Nb. de pages: 544

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782017206941

Editeur: Hachette HLAB

Date de parution: 2022

 

 

 

Livres de téléchargement Scribd Captive Tome 1.5 (Litterature Francaise) 9782017206941 FB2 DJVU PDF

 

Overview

Elle était la rancune, il était la culpabilité. Mais autrefois, ils étaient l'amour. Benjamin Jenkins n'a jamais oublié Isabella Grace, son premier amour, la seule à avoir su voir le véritable Ben derrière sa façade de charme et d'humour. Mais son monde, où se mêlent crimes et trahisons, était bien trop dangereux pour elle. Alors, Ben a disparu du jour au lendemain, sans la moindre explication. Depuis, son souvenir le hante chaque jour. Et ce, malgré la situation de plus en plus tendue au sein du réseau Scott, qui est sur le point de dégénérer. Mais Isabella non plus ne l'a pas oublié. La jeune femme décide de le contacter anonymement, espérant obtenir des réponses aux questions qui l'empêchent de tourner la page. Sans se douter qu'elle est sur le point de raviver des sentiments depuis longtemps enfouis sous la rancoeur... ni qu'elle s'expose à un danger des plus mortels. Mais devant cette nouvelle chance, Ben n'est pas sûr d'avoir la force, cette fois, de la laisser partir.
Effect of Indian Raga Music on Conditions of Heart - A New Scientific Approach
Creators: name: Bandopadhyay, Sanjoy
name: Bhattacharya, D.K.
Publisher: name: Zenodo
Year: 2012
Subjects: Indian Raga Music, major tones, minor tones, alap, jod, drut gat, komal svaras, tivra svara, Yoga, heart rate variability (HRV)

description: Phenomenology or statistical survey to study the effect of music on humans gives us only human feedback, which comes from their intuition and feelings. Different conclusions derived from such surveys are prone to questions on accuracy. Here we tried to study the effect of Indian Raga Music [IRM] on the Autonomic Nervous System by studying ECG data in general and HRV data in particular. For this purpose, we chose sitar recitals of some ragas. We chose a raga with mostly the major tones [tivra svaras], and the other had mostly minor tones [komal svaras]. We also compared the effects between the slow renditions [alap, slow jod] and the music's faster renditions [drut gat]. We observed the effect on two types of subjects. One group had a general understanding of IRM, and the other had no or negligible understanding of the music genre. We collected HRV data from the subjects in normal conditions. Then they were allowed to listen to the music samples, each sample for ten minutes. The HRV data were collected. All the acquired signals were put to scientific study for their long-term dynamics. The investigations were made to find out the changes, if any, in the heart conditions of the subjects when they were listening to the music of different parameters in terms of notes and speeds of execution. Finally, the results were compared to identify any significant changes in stress conditions found in Yoga practitioners.
Posterior predictive distributions of neutron-deuteron cross sections
Creators: name: Miller, Sean B. S.
name: Ekström, Andreas
name: Forssén, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We quantify the posterior predictive distributions (PPDs) of elastic neutron-deuteron ($nd$) scattering cross sections using nucleon-nucleon ($NN$) interactions from chiral effective field theory ($χ$EFT) up to and including next-to-next-to-next-to-leading order (N$^3$LO). These PPDs quantify the spread in $nd$ predictions due to the variability of the low-energy constants (LECs) inferred from $NN$ scattering data. We use the wave-packet continuum discretization method to solve the Alt-Grassberger-Sandhas form of the Faddeev equations for elastic scattering. We draw 100 samples from the PPDs of $nd$ cross sections up to 67 MeV in scattering energy, i.e., in the energy region where the effects of three-nucleon forces are expected to be small. We find that the uncertainty about $NN$ LECs inferred from $NN$ scattering data, when assuming uncorrelated errors, does not translate to significant uncertainty in the low-energy $nd$ continuum. Based on our estimates, the uncertainty of $nd$ predictions are dominated by the $χ$EFT truncation error, at least below N$^3$LO. At this order, the 90% credible interval of the PPD and the truncation error are comparable, although both are very small on an absolute scale.
description: 10 pages, 6 figures
Multiplexing scheme for simplified entanglement-based large-alphabet quantum key distribution
Creators: name: Dada, Adetunmise C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a practical quantum cryptographic scheme which combines high information capacity, such as provided by high-dimensional quantum entanglement, with the simplicity of a two-dimensional Clauser-Horne-Shimony-Holt (CHSH) Bell test for security verification. By applying a state combining entanglement in a two-dimensional degree of freedom, such as photon polarization, with high-dimensional correlations in another degree of freedom, such as photon orbital angular momentum (OAM) or path, the scheme provides a considerably simplified route towards security verification in quantum key distribution (QKD) aimed at exploiting high-dimensional quantum systems for increased secure key rates. It also benefits from security against collective attacks and is feasible using currently available technologies.
description: 7 pages, 3 figures
Table S1. Initial geneotype and allele frequencies. from The purging of deleterious mutations in simple and complex mating environments
Creators: name: Colpitts, Julie
name: Williscroft, Darla
name: Harmandeep Singh Sekhon
name: Rundle, Howard D.
Publisher: name: The Royal Society
Year: 2017
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Initial genotype and allele frequencies in replicate experimental populations of each mutation upon their founding
Matching the mass function of Milky Way satellites in competing dark matter models
Creators: name: Lovell, Mark R.
name: Zavala, Jesús
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Any successful model of dark matter must explain the diversity of observed Milky Way (MW) satellite density profiles, from very dense ultrafaints to large, low density satellites such as Crater~II that appear to be larger their anticipated host dark matter haloes. We consider cold dark matter (CDM), warm dark matter (WDM, 3.3keV thermal relic power spectrum), and a self-interacting dark matter model (SIDM) that induces gravothermal collapse in low mass subhaloes. Predictions for these density profiles are complicated by the limitations of simulation resolution in the stripping of subhaloes by the MW system, therefore we make predictions for satellite properties in these three models using $N$-body simulations combined with a semi-analytic halo stripping algorithm. We find that most CDM and WDM subhaloes of mass $>10^{8}$$M_{\odot}$ are large enough after stripping to fit most satellites; however, the required amount of stripping often requires a stronger tidal field than is available on the subhalo's orbit. The lower concentrations of WDM subhaloes enable this model to explain the required satellite masses with less stripping than is necessary for CDM, and is thus consistent with orbits of larger pericentres. SIDM cores offer the best fits to massive, low density satellites at the expense of predicting many $>10^{9}$$M_{\odot}$ subhaloes to host low density satellites with no observed analogue. We conclude that an SIDM model must have a very high velocity-dependent cross-section in order to match all satellites, and that WDM offers a marginally better fit than CDM to the MW satellite mass function.
description: 23 pages, 14 figures, accepted by MNRAS. Contact: lovell@hi.is
Time lags of the flickering in cataclysmic variables as a function of wavelength
Creators: name: Bruch, Albert
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Flickering is a ubiquitous phenomenon in cataclysmic variables (CVs). Although the underlying light source is one of the main contributors to the optical radiation, the mechanism leading to flickering is not understood as yet. The present study aims to contribute to the set of boundary conditions, defined by observations, which must be met by physical models that describe the flickering. In particular, time lags in the occurrence of flickering events at different wavelengths over the optical range are examined. To this end, the cross-correlation functions (CCFs) of numerous light curves of a sample of CVs are analysed that were observed simultaneously or quasi-simultaneously in different bands of various photometric systems. Deviations of the maxima of the CCFs from zero time-shift indicate a dependence of the flickering activity on the wavelength in the sense that flickering flares reach their maxima slightly earlier in the blue range than in the red. While the available observational material does not permit detecting this individually in all observed systems, the ensemble of all data clearly shows this effect. Particularly instructive are the cases of V603 Aql and TT Ari, where time lags of 15.1 sec and 4.3 sec, respectively, are observed between the U and R bands. In principle this can be understood if during the development of a flickering flare the radiation characteristics of the light source responsible for flickering change such that in the early phases of a flare more short-wavelength radiation is emitted, and later on, the peak of the emission shifts to the red. Respective scenarios are discussed and shown to be in qualitative and quantitative agreement with observations.
Probabilities of moderately atypical fluctuations of the size of a swarm of Brownian Bees
Creators: name: Sasorov, Pavel
name: Vilenkin, Arkady
name: Smith, Naftali R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The ``Brownian bees'' model describes an ensemble of $N=$~const independent branching Brownian particles. The conservation of $N$ is provided by a modified branching process. When a particle branches into two particles, the particle which is farthest from the origin is eliminated simultaneously. The spatial density of the particles is governed by the solution of a free boundary problem for a reaction-diffusion equation in the limit of $N \gg 1$. At long times, the particle density approaches a spherically symmetric steady state solution with a compact support of radius $\bar{\ell}_0$. However, at finite $N$, the radius of this support, $L$, fluctuates. The variance of these fluctuations appears to exhibit a logarithmic anomaly [Siboni {\em et al}., Phys. Rev. E. {\bf104}, 054131 (2021)]. It is proportional to $N^{-1}\ln N$ at $N\to\infty$. We investigate here the tails of the probability density function (PDF), $P(L)$, of the swarm radius, when the absolute value of the radius fluctuation $ΔL=L-\bar{\ell}_0$ is sufficiently larger than the typical fluctuations' scale determined by the variance. For negative deviations the PDF can be obtained in the framework of the optimal fluctuation method (OFM). This part of the PDF displays the scaling behavior: $\ln P\propto - N ΔL^2\, \ln^{-1}(ΔL^{-2})$, demonstrating a logarithmic anomaly at small negative $ΔL$. For the opposite sign of the fluctuation, $ΔL > 0$, the PDF can be obtained with an approximation of a single particle, running away. We find that $\ln P \propto -N^{1/2}ΔL$. We consider in this paper only the case, when $|ΔL|$ is much less than the typical radius of the swarm at $N\gg 1$.
description: 16 pages, 10 figures
DOWNLOAD [PDF] {EPUB} Le code moto Michelin
Creators: name: Poche
Publisher: name: Zenodo
Year: 2024

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Le code moto Michelin

Michelin

Nb. de pages: 192

Format: Pdf, ePub, MOBI, FB2

ISBN: 9782067260900

Editeur: Michelin

Date de parution: 2023

 

 

 

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L'OUTIL IDEAL POUR REUSSIR L'EXAMEN MOTO, MEME EN CANDIDAT LIBRE COMPLET : - L'intégralité des thèmes de l'examen théorique moto - La liste des panneaux officiels DIDACTIQUE : - Des visuels pour une meilleure compréhension - L'explication du déroulement de toutes les épreuves - Des tests pour évaluer vos connaissances + de nombreux conseils et informations complémentaires pour être fin prêt. OFFERT : 1000 QUESTIONS EN LIGNE Un entrainement intensif pour se tester et réviser efficacement - Accès individuel à 25 séries de 40 questions offertes - Actualisées en permanence Rédigé par des enseignants de la conduite moto et motards expérimentés et passionnés !
(3009) Elizabeth Colbeck
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.
Experimental violation of Leggett-Garg inequality in a three-level trapped-ion system
Creators: name: Zhan, Tianxiang
name: Wu, Chunwang
name: Zhang, Manchao
name: Qin, Qingqing
name: Yang, Xueying
name: Hu, Han
name: Su, Wenbo
name: Zhang, Jie
name: Chen, Ting
name: Xie, Yi
name: Wu, Wei
name: Chen, Pingxing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Leggett-Garg inequality (LGI) studies the temporal correlation in the evolution of physical systems. Classical systems obey the LGI but quantum systems may violate it. The extent of the violation depends on the dimension of the quantum system and the state update rule. In this work, we experimentally test the LGI in a three-level trapped-ion system under the model of a large spin precessing in a magnetic field. The Von Neumann and Lüders state update rules are employed in our system for direct comparative analysis. The maximum observed value of Leggett-Garg correlator under the Von Neumann state update rule is $K_3 = 1.739 \pm 0.014$, which demonstrates a violation of the Lüders bound by 17 standard deviations and is by far the most significant violation in natural three-level systems.
Improving the Techniques for Human Hepatocyte Transplantation: Report from a Consensus Meeting in London
Creators: name: Mitry, Ragai R.
name: Nowak, Greg
name: Dhawan, Anil
name: Reid, Lola M.
name: Roy-Chowdhury, Jayanta
name: Bansal, Sanjay
name: Ott, Michael
name: Dagher, Ibrahim
name: Puppi, Juliana
name: Ohashi, Kazuo
name: Gómez-Lechón, José M.
name: Hughes, Robin D.
name: Castell, Jose V.
name: Weber, Anne
name: Guha, Chandan
name: Gupta, Sanjeev
name: Ericzon, Bo Goran
name: Strom, Stephen C.
name: Sokal, Etienne
name: Fox, Ira J.
name: Ellis, Ewa C.S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: On September 6 and 7, 2009 a meeting was held in London to identify and discuss what are perceived to be current roadblocks to effective hepatocyte transplantation as it is currently practiced in the clinics and, where possible, to offer suggestions to overcome the blocks and improve the outcomes for this cellular therapy. Present were representatives of most of the active clinical hepatocyte transplant programs along with other scientists who have contributed substantial basic research to this field. Over the 2-day sessions based on the experience of the participants, numerous roadblocks or challenges were identified, including the source of cells for the transplants and problems with tracking cells following transplantation. Much of the discussion was focused on methods to improve engraftment and proliferation of donor cells posttransplantation. The group concluded that, for now, parenchymal hepatocytes isolated from donor livers remain the best cell source for transplantation. It was reported that investigations with other cell sources, including stem cells, were at the preclinical and early clinical stages. Numerous methods to modulate the immune reaction and vascular changes that accompany hepatocyte transplantation were proposed. It was agreed that, to obtain sufficient levels of repopulation of liver with donor cells in patients with metabolic liver disease, some form of liver preconditioning would likely be required to enhance the engraftment and/or proliferation of donor cells. It was reported that clinical protocols for preconditioning by hepatic irradiation, portal vein embolization, and surgical resection had been developed and that clinical studies using these protocols would be initiated in the near future. Participants concluded that sharing information between the groups, including standard information concerning the quality and function of the transplanted cells prior to transplantation, clinical information on outcomes, and standard preconditioning protocols, would help move the field forward and was encouraged.
Canard-like phenomena in piecewise-smooth Van der Pol systems
Creators: name: Roberts, Andrew
name: Gendinning, Paul
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: We show that a nonlinear, piecewise-smooth, planar dynamical system can exhibit canard phenomena. Canard phenomena in nonlinear, piecewise-smooth systems can be qualitatively more similar to the phenomena in smooth systems than piecewise-linear systems, since the nonlinearity allows for canards to transition from small cycles to canards "with heads." The canards are born of a bifurcation that occurs as the slow-nullcline coincides with the splitting manifold. However, there are conditions under which this bifurcation leads to a phenomenon called super-explosion, the instantaneous transition from a globally attracting periodic orbit to relaxations oscillations. Also, we demonstrate that the bifurcation-whether leading to canards or super-explosion-can be subcritical.
Antimalarial agents. III. Mechanism of action of artesunate against Plasmodium berghei infection.
Creators: name: Oswald, C. Brent
name: Yokoi, Toshio
name: Lee, Kuo Hsiung
name: Hall, Iris H.
name: Zhao, Yi
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1987

description: The antimalarial agent, artesunate has been observed to suppress the infection growth rate of in CF mouse red blood cells. The inhibition of growth was due to a number of biochemical mechanisms. Deoxyribonucleic acid (DNA) synthesis in the was inhibited significantly by the drug with marginal inhibition of protein synthesis. The inhibition of DNA synthesis seemed to be due to a block of purine synthesis at the regulatory enzyme site of inosine monophosphate (IMP) dehydrogenase. Whereas there was no evidence to demonstrate that the drug alkylated nucleotide bases or caused cross linking of DNA strands of the plasmodium, the drug did appear to cause non-specific binding to bases that interfered with template activity. There was marked inhibition of messenger ribonucleic acid (mRNA) polymerase activity with moderate inhibition of DNA polymerase activity. The drug caused significant reduction of basal oxygen consumption of with a significant inhibition of succinic acid dehydrogenase activity. The drug interacted with reduced nicotinamide adenine dinucleotide (NADH), suggesting the possibility that artesunate may interfere with energy required for cell growth.
Learning Pair Potentials using Differentiable Simulations
Creators: name: Wang, Wujie
name: Wu, Zhenghao
name: Gómez-Bombarelli, Rafael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Machine Learning (cs.LG)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Learning pair interactions from experimental or simulation data is of great interest for molecular simulations. We propose a general stochastic method for learning pair interactions from data using differentiable simulations (DiffSim). DiffSim defines a loss function based on structural observables, such as the radial distribution function, through molecular dynamics (MD) simulations. The interaction potentials are then learned directly by stochastic gradient descent, using backpropagation to calculate the gradient of the structural loss metric with respect to the interaction potential through the MD simulation. This gradient-based method is flexible and can be configured to simulate and optimize multiple systems simultaneously. For example, it is possible to simultaneously learn potentials for different temperatures or for different compositions. We demonstrate the approach by recovering simple pair potentials, such as Lennard-Jones systems, from radial distribution functions. We find that DiffSim can be used to probe a wider functional space of pair potentials compared to traditional methods like Iterative Boltzmann Inversion. We show that our methods can be used to simultaneously fit potentials for simulations at different compositions and temperatures to improve the transferability of the learned potentials.
description: 12 pages, 10 figures
(3006) Edward Audus Hirst
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.
PDF EPUB Download Magnolia Parks by Jessa Hastings Full Book
Creators: name: Stock
Publisher: name: Zenodo
Year: 2024

description: Magnolia Parks by Jessa Hastings

 

 

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Magnolia Parks

Jessa Hastings

Page: 506

Format: pdf, ePub, mobi, fb2

ISBN: 9781737281108

Publisher: Also Industries

 

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She is a beautiful, affluent, self-involved and mildly neurotic London socialite. He is Britain's most photographed bad-boy lothario who broke her heart. But Magnolia Parks and BJ Ballentine are meant to be, and everyone knows it. They're in the stars... just suspended in a strange kind of love that looks like hurting each other a lot of the time: She dates other people to keep him at bay; he sleeps with other girls to get back at her for it. But at the end of their every sad endeavour to get over one another, it's still each other they crawl back to. But their dysfunction is catching up with them, pulling at their seams and fraying the world they've built; a world where neither has to ever let the other go completely. As the cracks start to show and secrets begin to surface, Magnolia and BJ are finally forced to face the formidable question they've been avoiding all their lives: how many loves do you really get in a lifetime?