Prior to the COVID-19 pandemic, family presence in the neonatal intensive care unit (NICU), pediatric intensive care unit (PICU), and adult intensive care unit (ICU) was increasingly encouraged in many hospitals through the implementation of open (i.e., 24-hr) visitation policies [5,6,7,...
Given a graph with edge costs and vertex profits and given a budget B , the Orienteering Problem asks for a walk of cost at most B of maximum profit. Additionally, each profit may be given with a time window within which it can be collected by the walk. While the Orienteering Problem ...
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Under an Elsevier user license Open archiveMultitape Turing machines which can use their storage tapes only as counters or as pushdown stores are investigated. The memory access restrictions are produced by regarding the machines as small computers (as in the formalism of Wang) and by restricting ...
Under an Elsevier user license Open archiveAbstract For finite non-empty sets of integers A and B put A+̂B=}a+b: a∈A,b∈B,a≠b{. In this paper, we prove that∣A+̂B∣=(1+o(1))∣A+B∣ .Previous article in issue Next article in issueReferences...
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to ...
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Under an Elsevier user license open archiveHighlights Summary Increased susceptibility of circadian clock mutant mice to metabolic diseases has led to the idea that a molecular clock is necessary for metabolic homeostasis. However, these mice often lack a normal feeding-fasting cycle. We tested whether...
Under an Elsevier user license Open archiveAbstract In 1941 D.H. Hyers solved the well-known Ulam stability problem for linear mappings. In 1951 D.G. Bourgin was the second author to treat the Ulam problem for additive mappings. In 1982–1998 we established the Hyers–Ulam stability for the...