Institution
Conservatoire national des arts et métiers
Education•Paris, France•
About: Conservatoire national des arts et métiers is a education organization based out in Paris, France. It is known for research contribution in the topics: Population & Orthogonal frequency-division multiplexing. The organization has 3573 authors who have published 7127 publications receiving 141430 citations. The organization is also known as: CNAM & Conservatoire des arts et métiers.
Topics: Population, Orthogonal frequency-division multiplexing, Petri net, Finite element method, Context (language use)
Papers published on a yearly basis
Papers
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01 May 1989-Graphical Models \/graphical Models and Image Processing \/computer Vision, Graphics, and Image Processing
TL;DR: The technique, derived from Gordon's algorithm, accounts for visual perception criteria, namely for contour detection, and the efficiency of the algorithm is compared to Gordon's and to the classical ones.
Abstract: A digital processing technique is proposed in order to enhance image contrast without significant noise enhancement. The technique, derived from Gordon's algorithm, accounts for visual perception criteria, namely for contour detection. The efficiency of our algorithm is compared to Gordon's and to the classical ones.
363 citations
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24 May 1994TL;DR: A natural mapping from SGML documents into OODB's and a formal extension of two OodB query languages in order to deal with SGML document retrieval and a key element is the introduction of paths as first class citizens.
Abstract: Structured documents (e.g., SGML) can benefit a lot from database support and more specifically from object-oriented database (OODB) management systems. This paper describes a natural mapping from SGML documents into OODB's and a formal extension of two OODB query languages (one SQL-like and the other calculus) in order to deal with SGML document retrieval.Although motivated by structured documents, the extensions of query languages that we present are general and useful for a variety of other OODB applications. A key element is the introduction of paths as first class citizens. The new features allow to query data (and to some extent schema) without exact knowledge of the schema in a simple and homogeneous fashion.
357 citations
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TL;DR: In this paper, the effect of inclusions on crack initiation and propagation in gigacycle fatigue was investigated experimentally and analytically in six high strength low alloy steels.
348 citations
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TL;DR: The value of the fine-structure constant α differs by more than 5 standard deviations from the best available result from caesium recoil measurements, which modifies the constraints on possible candidate dark-matter particles proposed to explain the anomalous decays of excited states of 8Be nuclei and paves the way for testing the discrepancy observed in the magnetic moment anomaly of the muon in the electron sector.
Abstract: The standard model of particle physics is remarkably successful because it is consistent with (almost) all experimental results. However, it fails to explain dark matter, dark energy and the imbalance between matter and antimatter in the Universe. Because discrepancies between standard-model predictions and experimental observations may provide evidence of new physics, an accurate evaluation of these predictions requires highly precise values of the fundamental physical constants. Among them, the fine-structure constant α is of particular importance because it sets the strength of the electromagnetic interaction between light and charged elementary particles, such as the electron and the muon. Here we use matter-wave interferometry to measure the recoil velocity of a rubidium atom that absorbs a photon, and determine the fine-structure constant α−1 = 137.035999206(11) with a relative accuracy of 81 parts per trillion. The accuracy of eleven digits in α leads to an electron g factor1,2—the most precise prediction of the standard model—that has a greatly reduced uncertainty. Our value of the fine-structure constant differs by more than 5 standard deviations from the best available result from caesium recoil measurements3. Our result modifies the constraints on possible candidate dark-matter particles proposed to explain the anomalous decays of excited states of 8Be nuclei4 and paves the way for testing the discrepancy observed in the magnetic moment anomaly of the muon5 in the electron sector6. The fine-structure constant is determined with an accuracy of 81 parts per trillion using matter-wave interferometry to measure the rubidium atom recoil velocity.
342 citations
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TL;DR: It is argued that a complete understanding of the event dynamics requires that both hazards and cumulative incidence be analyzed side by side, and that this is generally the most rigorous scientific approach to analyzing competing risks data.
334 citations
Authors
Showing all 3635 results
Name | H-index | Papers | Citations |
---|---|---|---|
Joshua A. Salomon | 107 | 435 | 124708 |
Serge Hercberg | 106 | 942 | 56791 |
Pilar Galan | 97 | 628 | 46782 |
Patrice Simon | 89 | 264 | 66332 |
Yuh-Shan Ho | 80 | 346 | 48242 |
Pierre-Louis Taberna | 68 | 209 | 34293 |
J. David Spence | 67 | 399 | 17671 |
Mathilde Touvier | 65 | 321 | 31586 |
Sébastien Czernichow | 64 | 274 | 14654 |
Emmanuelle Kesse-Guyot | 57 | 338 | 10914 |
Valentin Petrov | 54 | 743 | 12127 |
Sandrine Bertrais | 53 | 169 | 9618 |
Paco Bustamante | 52 | 295 | 9136 |
Khaled Ezzedine | 50 | 313 | 8939 |
Arnaud Fontanet | 50 | 204 | 11964 |