All papers published in this volume of Journal Physics: Conference Series have been peer-reviewed through processes administered by the Editors. Expert referees conducted reviews to professional and scientific standards expected a proceedings journal IOP Publishing.

by Francisco Javier Cabrera Hernández This thesis gathers research on three impact evaluations of interventions at the school and student level in Mexico. The first chapter evaluates the effects of a School Breakfast Program (SBP) on children’s outcomes such as cognitive skills, illness, height and weight and grade repetition in the period 2002 to 2005. Quasi-experimental estimations provide ev...

We explore the implications of no-envy (Foley 1967) in the context of queueing problems. We identify an easy way of checking whether a rule satisfies efficiency and no-envy. The existence of such a rule can easily be established. Next, we ask whether there is a rule satisfying efficiency and noenvy together with an additional solidarity requirement: every agent should be affected in the same di...

The Editors of Pain and Therapy would like to make the following addition to the Acknowledgments section of the abovementioned paper. This required wording was unintentionally missed off the original version of the manuscript. ‘‘Compliance with Ethics Guidelines: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institut...

The notion of the written form contracts and other legal transactions is analyzed in this paper. Historical development formal as well comparative law dimension are briefly addressed. possibilities to acknowledge effects case electronic declarations will also analyzed. A particular emphasis placed on different interpret relevant provisions Civil Obligations Act regarding fulfillment requirement...