منابع مشابه
Playing Safe
We consider two-player games over graphs and give tight bounds on the memory size of strategies ensuring safety conditions. More specifically, we show that the minimal number of memory states of a strategy ensuring a safety condition is given by the size of the maximal antichain of left quotients with respect to language inclusion. This result holds for all safety conditions without any regular...
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biomedical l interventions and prevention strategies. It is an issue that has been a concern of public health officials for decades and has been addressed quite successfully from a national perspective. By eliminating two major sources of exposures—leaded gasoline and leaded paint—blood lead levels for the majority of Americans have dropped dramatically over the past two decades. Unfortunately,...
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The marketplace, with its continuously increasing symbolic nature and infinitely many alternative consumption choices, poses a disorderly and threatening environment for consumers. This conceptual paper discusses the ways in which consumers magically create, eliminate, or shift many boundaries surrounding them through rituals and practices related with cleanliness in order to construct a safe ‘...
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ژورنال
عنوان ژورنال: Nature
سال: 1981
ISSN: 0028-0836,1476-4687
DOI: 10.1038/292283c0