In the article " Associations between Nighttime Traffic Noise and Sleep: The Finnish Public Sector Study, " by Halonen et al. " [Environ Health Perspect 120:1391–1396 (2012)], the last sentence of the " Conclusions " was incorrect: The nighttime traffic noise level associated with insomnia symptoms in the total study population should have been " > 55 dB " instead of " > 50 dB. " EHP regrets th...

http://dx.doi.org/10.1016/j.ijans.2016.09.002 2214-1391/ 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). ⇑ Corresponding author at: Department of Social and Welfare Studies, University of Linkoping, Campus Norrkoping, S-601 74 Norrköping, Sweden. E-mail address: [email protected] (K. Hjelm). F...

In this paper we present a lattice dynamical system stated by K. Kaneko in [Phys. Rev. Lett., 65, 1391-1394, 1990] which is related to the Belusov-Zhabotinskii reaction. We prove that this CML (Coupled Map Lattice) system has positive topological entropy for zero coupling constant.

British local authorities are required to monitor the mental health of looked after children using mean Strengths and Difficulties Questionnaire (SDQ) scores from parents or carers. This assumes that differences in mean SDQ scores reflect genuine differences in child mental health in this group, something we examined using nationally representative surveys (n = 1391, age 5-16). We found that th...