منابع مشابه
Aging: Dial M for Mitochondria
A major goal of aging research is to identify interventions that prolong lifespan in distantly related organisms. In recent years, genetic studies in both nematodes and rodents have reported that moderate inactivation of genes important for mitochondrial electron transport chain (ETC) function can promote longevity. We performed an RNAi screen to probe the role of ETC components in modulating l...
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NoSQL databases offer a powerful and flexible means of querying non-relational data. However, leading NoSQL systems typically achieve high performance goals while minimizing support for traditional data management services and defying the establishment of solid formal models. In particular, the systems generally shun tools and design principles rendered conventional by the long history of RDBMS...
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In the classic Dial-a-Ride Problem, a server travels in some metric space to serve requests for rides. Each request has a source, destination, and release time. We study a variation of this problem where each request also has a revenue that is earned if the request is satisfied. The goal is to serve requests within a time limit such that the total revenue is maximized. We first prove that the v...
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ژورنال
عنوان ژورنال: Nature
سال: 2005
ISSN: 0028-0836,1476-4687
DOI: 10.1038/435712a