<Para ID="Par1">This paper studies the interaction between technology, a public input that flows in from abroad, and human capital, a private input that is accumulated domestically, as twin engines of growth in a developing economy. The model displays two types of long run behavior, depending on policies and...</para>

In economic situations where action entails a fixed cost, inaction is the norm. Action is taken infrequently, and adjustments are large when they occur. Interest in economic models that exhibit ''lumpy'' behavior of this kind has exploded in recent years, spurred by growing evidence that it is...