between 1992 and 2006. Theories emphasising firm-level heterogeneity show that industry-level productivity may not only …

efficiency. Our results suggest that technological heterogeneity plays important role in crop sector which traditionally is …

In this study, we use two representative surveysto investigate how competition and cooperation relate on the individual … competition and cooperation is positive and significant, even if we take into account the respondent's age, gender, settlement … type and region of residency. We also find that competition and cooperation relate in a nonlinear way to educational …