The history of technology is a rich and fascinating subject, combining engineering with economic, social, and political factors. Technology seems to advance in waves. Small advances in science and technology accumulate slowly, sometimes over long periods of time, until a critical level of technological success and economic advantage is achieved. The last century witnessed several of these waves...

BACKGROUND At present, diabetes is a chronic disease of great cost and heavy burdens. The International Diabetes Federation has repeatedly warned that by 2025, the global number of diabetics would rise to 333 million from 194 million in 2003. Although the occurrence of diabetes in developing countries is lower, China has a large population, so that the number of cases is increased. At the same ...

In this study, the aim was to determine the effect of 12 hours delay and time advancement of Bombyx mori larvae transfer to spinning frames on the economic traits of harvested cocoons. Our experience focused on the transfer of three lots of silkworm mature larvae to cocoon frames with 12 hours delay or advancement from usual spinning time. Commercial silkworm eggs were obtained and thr...

To help understand how firms develop and maintain dynamic capabilities, we examine the effects of the dynamics, management, and governance of R&D and marketing resource deployments on firm-level economic performance. In a sample of technology-based entrepreneurial firms, we find that a history of increased investments in marketing is an enduring source of competitive advantage. We also find tha...

Socio-economic maps contain important information regarding the population of a country. Computing these maps is critical given that policy makers often times make important decisions based upon such information. However, the compilation of socio-economic maps requires extensive resources and becomes highly expensive. On the other hand, the ubiquitous presence of cell phones, is generating larg...

This paper studies how a politician’s preferences and abilities to influence public and private sector productivity affect her choices over economic policies. Extremism between policies of leftand right-wing incumbents increases with ability, because voters are more willing to re-elect competent politicians. Positive correlations between certain ability dimensions and preferences amplify politi...

An economic system which exhibits chaotic behaviour has been stabilized on various periodic orbits by use of the Ott-Grebogi-Yorke method. This procedure has been recently applied to controlling chaotic phenomena in physical, chemical and biological systems. We adopt this method successfully for Feichtinger's generic model of two competing firms with asymmetrical investment strategies. We show ...

Cooperation between organisms can often be understood, like trade between merchants, as a mutually beneficial exchange of services, resources or other 'commodities'. Mutual benefits alone, however, are not sufficient to explain the evolution of trade-based cooperation. First, organisms may reject a particular trade if another partner offers a better deal. Second, while human trade often entails...