Time (magazine)

Time ou Time Magazine (parfois typographié TIME Magazine ou TIME) est l'un des principaux magazines d'information hebdomadaires américains. Une rétroacronymie est habituellement faite sur le nom du magazine, Time pour « Today Information Means Everything ». Une édition européenne, Time Europe, anciennement Time Atlantic, est réalisée à Londres et une édition asiatique, Time Asia, est réalisée à Hong Kong. Les principaux concurrents américains de Time sont Newsweek et U.S. News & World Report. Anciennement publié par Time Inc., basé à New York, depuis , Time est publié par TIME USA, LLC, propriété de Marc Benioff, qui l'a acquis auprès de Meredith Corporation. Historique Création vignette|upright=1|Couverture du premier numéro de Time, publié le , avec en portrait . Le premier numéro de Time a été publié le , dix ans avant ses deux principaux concurrents, et a défini le concept de magazine d'actualité hebdomadaire. Time a été créé par Briton Hadden et Henry Lu

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Anomaly detection in the dynamics of web and social networks

Kirell Maël Benzi, Volodymyr Miz, Benjamin Ricaud, Pierre Vandergheynst

In this work, we propose a new, fast and scalable method for anomaly detection in large time-evolving graphs. It may be a static graph with dynamic node attributes (e.g. time-series), or a graph evolving in time, such as a temporal network. We define an anomaly as a localized increase in temporal activity in a cluster of nodes. The algorithm is unsupervised. It is able to detect and track anomalous activity in a dynamic network despite the noise from multiple interfering sources. We use the Hopfield network model of memory to combine the graph and time information. We show that anomalies can be spotted with good precision using a memory network. The presented approach is scalable and we provide a distributed implementation of the algorithm. To demonstrate its efficiency, we apply it to two datasets: Enron Email dataset and Wikipedia page views. We show that the anomalous spikes are triggered by the real-world events that impact the network dynamics. Besides, the structure of the clusters and the analysis of the time evolution associated with the detected events reveals interesting facts on how humans interact, exchange and search for information, opening the door to new quantitative studies on collective and social behavior on large and dynamic datasets.

2019

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Anomaly Detection in the Dynamics of Web and Social Networks Using Associative Memory

Kirell Maël Benzi, Volodymyr Miz, Benjamin Ricaud, Pierre Vandergheynst

ASSOC COMPUTING MACHINERY2019

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The 3D Smith Chart: From Theory to Experimental Reality

Mihai Adrian Ionescu, Andrei Müller

The Smith chart was primarily developed, extended, and refined by Phillip Hagar Smith [1] in a series of works published [2]-[4] between 1939 and 1969. Smith was born in Lexington, Massachusetts, in 1905. He majored in electrical communications at Tufts University and joined the Radio Research Department of Bell Telephone Laboratories (now Bell Labs) in 1928. While there, in around 1930, Smith started work on the diagram that was to become the Smith chart. He submitted the initial version to Electronics Magazine in 1937; the magazine finally published his diagram in 1939 [2]. The MIT Radiation Laboratory started using the chart. In 1940, and in 1944 Smith published a second article that incorporated further improvements, including the use of the chart with either impedance or admittance coordinates. In 1952, Smith was elevated to IEEE Fellow for his contributions to the development of antennas and the graphical analysis of transmission-line characteristics. The first issue of Microwave Journal (1958) published a biography of Smith to acknowledge the importance of his contributions. In 1969, he wrote the book Electronic Applications of the Smith Chart in Waveguide, Circuit and Component Analysis; he retired from Bell Labs in 1970. In 1975, he received the IEEE Microwave Theory and Techniques Society?s Special Recognition in Microwave Applications award for the Smith chart, and in 1994 he was elected to the New Jersey Inventors Hall of Fame.

2020

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The New York Times

The New York Times (prononcé en anglais : ), abrégé NYT est un quotidien new-yorkais fondé en 1851, publié en anglais, espagnol, et chinois. Il est parfois surnommé The Grey Lady. Le New York Times

New York

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La Seconde Guerre mondiale, ou Deuxième Guerre mondiale, est un conflit armé à l'échelle planétaire qui dure du au . Ce conflit oppose schématiquement les Alliés et l'Axe. Provoquée par le règleme

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