Visar resultat 1 - 5 av 1492 avhandlingar innehållade ordet duration.
Sammanfattning : This thesis is divided into two distinct parts. The first part contains three chapters dealing with the analysis of duration data from an econometric perspective and with application to trade durations. LÄS MER
Sammanfattning : Estimation and testing in labour supply and unemployment duration models are studied. In the first two papers estimation techniques designed to account for quantity constraints and perceived tax scales are developed, while the remaining three papers focus on specification tests. LÄS MER
Sammanfattning : The overall aim of this thesis was to increase knowledge about factors that influence breastfeeding initiation and duration, as well as about women’s attitudes towards breastfeeding during pregnancy.The first two studies were a part of the UPPSAT project, a population-based cohort study conducted in Uppsala, Sweden. LÄS MER
Sammanfattning : Why are some wars longer than others? Offense-defense theorists have assumed that wars are shorter and it is more difficult for states to create security when military technology favors the offense and attacking is easier than defending. This study argues that this assumption is wrong on both accounts. LÄS MER
Sammanfattning : .... LÄS MER