This paper focuses on the role of human capital in reducing the barriers to firms’ engagement in innovation activities. The paper distinguishes between firms facing barriers that stop them from engaging in any innovation activity, and firms that face impediments in the course of their innovation activity. We investigate whether human capital has a particularly strong impact in relation to lower...

At independence in 1957 we had a total of 770 doctors with a doctor population ratio of 1:8091. In 1987 we had 5794 doctors registered and a markedly improved ratio of 1:2852 (Table I). Even if we were to aim for a modest 1:2000 ratio by the year 2000 when the population is estimated to rise to 22.5 million,' we will require to double our present number of doctors. We will need to register an a...

by William M. Alley1, Lisa Beutler2, Michael E. Campana3, Sharon B. Megdal4, and John C. Tracy5 1Corresponding author: National Ground Water Association, 4731 Winona Ave., San Diego, CA 92115; 619-922-2544; [email protected] 2MWH Americas, 3301 C Street, Suite 1900, Sacramento, CA 95816. 3Technical Director, American Water Resources Association, P.O. Box 1626, Middleburg, VA 20118. 4University of...

This study used trend, correlation, and wavelet analysis to characterize Lake Chad (LC) level fluctuations, river discharge, El Niño Southern Oscillation (ENSO), and precipitation regimes and their interrelationships. Linear correlation results indicate a negative association between ENSO and LC level, river discharge and precipitation. Trend analysis shows increasing precipitation in the Lake ...

As key economic, ecological and demographic trends converge to reshape Africa and its relationship with the outside world, a new politics is emerging in the twenty-first century around the water-food-energy nexus, which is central to the continent's relevance in the global economy. On the one hand, Malthusian anxieties are proliferating; pessimists link population growth and growing water scarc...

A ten per cent sample survey of all general practitioners in England and Wales in 1969-70 included two questions about the choice of practice location. The most common reasons given were the absence of any real alternatives (in the immediate post-war period), the influence of family or friends, the existence of medical contacts in the area, and favourable points about the practice itself.In con...