Results 41 to 50 of about 5,261,538 (109)

Techniques&charlie [PDF]

, 2016
Frédéric Joulian Après l’assassinat des dessinateurs de Charlie Hebdo par des intégristes et les jours de tristesse, de colère ou de communion collective que nous venons de vivre, il nous a semblé important de ne pas nous taire, sous prétexte de science
Guille-Escuret, Georges, Valentin, Boris, d’Onofrio, Salvatore, Gosselain, Olivier, Joulian, Frédéric, Hubert, Bernard, Dittmar, Pierre-Olivier, Smolderen, Thierry, Bartholeyns, Gil   +8 more
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Techniques, technologies, apprentissage et plaisir au travail... [PDF]

, 2012
Techniques, technologies, apprentissage et plaisir au travail... L’auteur analyse les différentes traditions en anthropologie des techniques sous l’angle des difficultés sous-jacentes au sujet même de ces études.
Sigaut, François
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Distributions of Wide Binary Stars in Theory and in Gaia Data. II. Reconstruction of Sample Probability Density of True Orbit Sizes

The Astronomical Journal
Wide binary stars are important for testing alternative models of gravitation in the weak-field regime and understanding the statistical outcomes of dynamical interactions in the general Galactic field. The Gaia mission’s collection of weakly bound pairs
Valeri V. Makarov
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Systèmes techniques de production lithique [PDF]

, 2011
 Systèmes techniques de production lithique : variations techno-économiques dans les processus de réalisation des outillages paléolithiques. La prise en compte systématique, dans l’analyse technologique des objets préhisto­riques, de l’ensemble des ...
Geneste, Jean-Michel
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Robustness Analysis of USmorph. I. Generalization Efficiency of Unsupervised Strategies and Supervised Learning in Galaxy Morphological Classification

The Astrophysical Journal
We conduct a systematic robustness analysis of the hybrid machine learning framework USmorph , which integrates unsupervised and supervised learning for galaxy morphological classification.
Shiwei Zhu, Guanwen Fang, Yao Dai, Chichun Zhou, Yirui Zheng, Jie Song, Shiying Lu, Xu Kong   +7 more
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Review of 2D Spectral Image Processing Techniques

The processing of two-dimensional (2D) spectral images constitutes a critical and multifaceted discipline in contemporary astronomical data analysis. As spectroscopic instruments evolve towards higher multiplexing, resolution, and sensitivity, the raw 2D
Bo Qiu, A-Li Luo, Tao Lu, Siqi Liu
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Dual-coding Contrastive Learning Based on the ConvNeXt and ViT Models for Morphological Classification of Galaxies in COSMOS-Web

The Astrophysical Journal Supplement Series
In our previous works, we proposed a machine learning framework named USmorph for efficiently classifying galaxy morphology. In this study, we propose a self-supervised method called contrastive learning to upgrade the unsupervised machine learning (UML)
Shiwei Zhu, Guanwen Fang, Chichun Zhou, Jie Song, Zesen Lin, Yao Dai, Xu Kong   +6 more
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Imputation and estimation under nonignorable nonresponse for household surveys with missing covariate information

, 2010
In this paper we develop and apply new methods for handling not missing at random (NMAR) nonresponse. We assume a model for the outcome variable under complete response and a model for the response probability, which is allowed to depend on the outcome ...
Pfeffermann, Danny, Sikov, Anna
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Robustness Analysis of USmorph. II. Optimizing Feature Extraction, Dimensionality Reduction, and Clustering for Unsupervised Galaxy Morphology Classification

The Astrophysical Journal
We conduct a systematic robustness analysis of the unsupervised machine learning module within the hybrid framework USmorph . This module automatically discovers morphological structures from large-scale galaxy images, forming the foundation of the ...
Guanwen Fang, Xiaolei Yin, Yirui Zheng, Zesen Lin, Shiwei Zhu, Jie Song, Chichun Zhou, Xu Kong   +7 more
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Retour d’expérience de Techniques de l\u27Ingénieur sur la mise en place de la norme Counter v5.1 [PDF]

Ce document a pour sujet les Techniques de l\u27Ingénieur : L’expertise scientifique et technique de référence depuis 1946 Plus de 10 000 articles de référence, fiches pratiques, articles interactifs, Parcours Pratiques et articles d’actualité mis à ...
Techniques de l\u27ingénieur
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