Fighting PFAS with PFAS
نویسندگان
چکیده
منابع مشابه
Decidable Problems for Unary PFAs
Given a PFA A and a cut-point λ, the isolation problem asks if there is a bound > 0 such that the acceptance probability of every word is bounded away from λ by . In this paper we show that the isolation problem for PFAs with a unary input alphabet is (a) coNPcomplete, if the cut-point is 0 or 1, and (b) is in coNP and coNP-hard, if the cut-point is in (0, 1). We also show that the language con...
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OBJECTIVE The purpose of this article is to compare the neurodevelopmental profiles of 78 foster and adopted children with fetal alcohol syndrome (FAS), partial FAS (pFAS), or alcohol-related neurodevelopmental disorder (ARND). METHOD Seventy-eight foster and adopted children underwent a comprehensive diagnostic evaluation. By using criteria more stringent than those required by current guide...
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It was conjectured by Černý in 1964, that a synchronizing DFA on n states always has a shortest synchronizing word of length at most (n− 1), and he gave a sequence of DFAs for which this bound is reached. Until now a full analysis of all DFAs reaching this bound was only given for n ≤ 4, and with bounds on the number of symbols for n ≤ 10. Here we give the full analysis for n ≤ 6, without bound...
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A Bayesian manner which marginalizes transition probabilities can be generally applied to various kinds of probabilistic finite state machine models. Based on such a Bayesian manner, we implemented and compared three algorithms: variable-length gram, state merging method for PDFAs, and collapsed Gibbs sampling for PFAs. Among those, collapsed Gibbs sampling for PFAs performed the best on the da...
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The drinking water of more than six million Americans in numerous communities has been found to contain highly fluorinated chemicals at concentrations of concern. Certain of these chemicals, including perfluorooctanoic acid and perfluorooctane sulfonic acid, are known to be persistent, bioaccumulative, and associated with adverse health outcomes in humans and animal models. The possible health ...
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ژورنال
عنوان ژورنال: ACS Central Science
سال: 2020
ISSN: 2374-7943,2374-7951
DOI: 10.1021/acscentsci.0c00164