Remodel While You Work

What makes you work while you are sick? Evidence from a survey of workers.

BACKGROUND Sickness absenteeism has been a focus of the EU Labour Force Surveys since the early 1970s. In contrast, sickness presenteeism is a newcomer. Based on surveys, this concept emerged in the empirical literature as late as the 1990s. Knowledge of the determinants of sickness presenteeism is still relatively sparse. METHODS The article examines the prevalence of sickness presenteeism i...

Learn While You Sleep

Grow rich while you sleep

We use data from a promotion campaign of NH-Hoteles to study self-selection of participants in a gift-exchange experiment. The promotion campaign allowed guests to pay any non negative amount of money for a stay in one of 36 hotels in Belgium and the Netherlands. The data allow us to distinguish between ‘regular guests’, who booked prior to the announcement of the promotion campaign and guests ...

Abstract and Model Check While You Prove

The construction of abstractions is essential for reducing large or innnite state systems to small or nite state systems. Boolean abstractions, where boolean variables replace concrete predicates, are an important class that subsume several abstraction schemes. We show how boolean abstractions can be constructed simply, eeciently, and precisely for innnite state systems while preserving propert...

Cortical plasticity: Learning while you sleep?

Sleep has been suggested to facilitate memory consolidation or learning, but there has been little direct evidence of a link between synaptic plasticity and sleep. A recent study suggests a role for sleep in the plastic changes that the visual cortex undergoes in response to occlusion of one eye early in life.