As recommended by an empirical population based study [ 12], for the functional scales and the global quality of life, we defined subjects with problematic functioning as those who scored <33.3%, while subjects in good condition scored ≥66.7%.
The selection of the dose for this study was empirical based on the maximum tolerated dose from previous studies in human volunteers and selected to ensure adequate PDE4 inhibition.
It shows promise as a simulator in long-term ecological studies to test hypotheses based on theoretical or empirical-based studies at larger landscape scales.
The hindcast model shows promise for use in ecological studies to test hypotheses based on theoretical- or empirical-based studies at larger landscapes and timescales.
Recent empirical studies based on survey data challenge this view.
The program provides a strong theoretical and empirical base for studying education in a rapidly changing global context and for understanding the how and why of successful policy-making to improve educational practice in different social settings.
Herbst and Mas reanalyzed the results of 35 such studies, either experiments carried out under controlled conditions or empirical studies based on data collected in the field (see the Perspective by Charness and Fehr).
The flow diagrams (Figures 3 to 18) show the status of approved protocols in included empirical studies based on available publications and additional information obtained such as number of studies stopped early or never started.
A longitudinal study designed to overcome difficulties encountered in previous empirical studies based on the resource view of strategy found that different, balanced forms of flexibility are required for firms to cope in uncertain, turbulent environments.
The approach/methods of the articles were varied with most common being discussion or theory-based content (n=51, 27.4%) or empirical findings based on case studies (n=51, 27.4%), qualitative methods (n=48, 25.8%) and quantitative surveys (n=48, 25.8%).
Empirical studies based on systematic observation and controlled experimentation.
