منابع مشابه
Isogeny volcanoes
The remarkable structure and computationally explicit form of isogeny graphs of elliptic curves over a finite field has made them an important tool for computational number theorists and practitioners of elliptic curve cryptography. This expository paper recounts the theory behind these graphs and examines several recently developed algorithms that realize substantial (often dramatic) performan...
متن کاملThe Encyclopedia of Volcanoes
aerosol Any suspended particle in the atmosphere. An aerosol can be a liquid droplet, such as sulfuric acid, or a solid, such as ash or tephra. Arctic Oscillation A strengthening or weakening of the polar vortex in the Northern Hemisphere, the main pattern of oscillation of winter variation of extratropical atmospheric circulation. For a positive mode, with a strong vortex, winter temperatures ...
متن کاملEarthquake triggering of mud volcanoes
Mud volcanoes sometimes erupt within days after nearby earthquakes. The number of such nearly coincident events is larger than would be expected by chance and the eruptions are thus assumed to be triggered by earthquakes. Here we compile observations of the response of mud volcanoes and other geologic systems (earthquakes, volcanoes, liquefaction, ground water, and geysers) to earthquakes. The ...
متن کاملIonian Volcanoes Reveal Their Temperatures
Introduction: Cassini ISS imaged the surface of Io in eclipse by Jupiter in late 2000 and early 2001 and obtained multiple-filter images over timescales of hours. Images like these have been used to study the temperature and variability of the numerous hotspots on the surface [1, 2, 3]. For example, Pele was found to be an active lava lake with most likely basaltic lava composition [2]. New Hor...
متن کاملLearning to Recognize Volcanoes on
Dramatic improvements in sensor and image acquisition technology have created a demand for automated tools that can aid in the analysis of large image databases. We describe the development of JARtool, a trainable software system that learns to recognize volcanoes in a large data set of Venusian imagery. A machine learning approach is used because it is much easier for geologists to identify ex...
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ژورنال
عنوان ژورنال: American Journal of Kidney Diseases
سال: 2018
ISSN: 0272-6386
DOI: 10.1053/j.ajkd.2018.05.003