Erratum to: Quasi-formations

Erratum to: Armentum: a hybrid direct search optimization methodology

In the original publication of this article unfortunately the co-authors were omitted. The two co-authors are displayed now.

Erratum

Erratum to: Higher-Order Averaging, Formal Series and Numerical Integration II: The Quasi-Periodic Case

The paper considers non-autonomous oscillatory systems of ordinary differential equations with d ≥ 1 nonresonant constant frequencies. Formal series like those used nowadays to analyze the properties of numerical integrators are employed to construct higher-order averaged systems and the required changes of variables. With the new approach, the averaged system and the change of variables consis...

Erratum to: The Healthy Primary School of the Future: study protocol of a quasi-experimental study

Erratum Following publication of this article [1], it has come to our attention that some of the terminology used in the article could be difficult to interpret. In table 1, the description of the measurements should begin with t0. This would mean that t1 becomes t0, t2 becomes t1, and so forth. Furthermore, where schoolchildren are referred to in groups 1–8, groups 1 and 2 refer to Kindergarte...

Erratum to

1Exposure, Epidemiology and risk Program; Department of Environmental Health; Harvard School of Public Health; Boston, ma uSa; 2Center of molecular and Genetic Epidemiology; Department of Environmental and Occupational Health; Ca’ Granda Ospedale maggiore Policlinico irCCS Foundation; università degli Studi di milano; milan, italy; 3Channing Laboratory; Brigham and women’s Hospital; Harvard med...