منابع مشابه
Shooting Stars in the Sky: An Online Algorithm for Skyline Queries
Skyline queries ask for a set of interesting points from a potentially large set of data points. If we are traveling, for instance, a restaurant might be interesting if there is no other restaurant which is nearer, cheaper, and has better food. Skyline queries retrieve all such interesting restaurants so that the user can choose the most promising one. In this paper, we present a new online alg...
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BACKGROUND On July 22, 2011, a single perpetrator killed 77 people in a car bomb attack and a shooting spree incident in Norway. This article describes the emergency medical service (EMS) response elicited by the two incidents. METHODS A retrospective and observational study was conducted based on data from the EMS systems involved and the public domain. The study was approved by the Data Pro...
متن کاملShooting Type Polishing Machine
a rahalt-chromium (Co-Cr) alloy using a centrifugal shooting type polishing machine. In tha present work, we examined the effects of the texture of polishing particle and polishing time on the surface roughness of Co-Cr alloy cast specimens. Nine differcnt textures of polishing par'ticle were investigated wiLh respect to core material and paTticle abrasiveness: three (lifferent elastic body cer...
متن کاملComparison of Shooting Time Characteristics and Shooting Posture Between High- and Low- Performance Archers
Background. Archery is a precision sport that requires high levels of consistency and reproducibility in the shooting movement to achieve the highest score. Objectives. This study aimed to compare and correlate the shooting time characteristics and shooting posture on the archery shooting performance of high- and low-performance archers. Methods. Terengganu state team and Malaysia Pahang Spor...
متن کاملUnweighted p-center problem on extended stars
An extended star is a tree which has only one vertex with degree larger than two. The -center problem in a graph asks to find a subset of the vertices of of cardinality such that the maximum weighted distances from to all vertices is minimized. In this paper we consider the -center problem on the unweighted extended stars, and present some properties to find solution.
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ژورنال
عنوان ژورنال: Nature
سال: 1877
ISSN: 0028-0836,1476-4687
DOI: 10.1038/016286c0