nowadays, agricultural r&d provides new and developed technologies to create modern agricultural producing methods. during recent years, improving agricultural productivity is affected by not only domestic r&d investments but also foreign countries r&d investments. nowadays, according to new growth models, r&d is the base of productivity. recent economic theories consider agricu...

investing in research and development spending (r&d) affects total factor productivity (tfp).recently new theories of economic growth have emphasized the relationship between r&d and tfpand also identified a number of channels through which a country’s r&d affects tfp of its tradepartner. this study seeks to estimate the effect of agricultural r&d and education spending and some...

BACKGROUND The 2010 Gulf of Mexico Oil Spill took place over 180,000 square kilometers during a 12-week period over five years ago; however, this event continues to influence the development and distribution of organisms in and around the region of the disaster. Here we examine fish species that may have been most affected by noting their past distribution in the region of the spill and examini...

Model updating concerns the modification of an existing but inaccurate model with measured data. For models characterized by quadratic pencils, the measured data usually involve incomplete knowledge of natural frequencies, mode shapes, or other spectral information. In conducting the updating, it is often desirable to match only the part of observed data without tampering with the other part of...

Regional clusters have become an inseparable component of modern economies. Spurred by the idea that unrestrictedly encourage firm innovativeness, cluster approach has particularly gained attention among politicians. Nevertheless, due to a lack holistic consideration different influencing variables, scientific results about effect on innovative performance are highly contradictive. Consequently...

In August 1999, a crude oil spill of some 296 000 litres from the oil tanker Laura D’Amato occurred in Gore Cove, in inner Sydney Harbour, Port Jackson (Australia), during unloading at the terminal of the Shell Co of Australia. Our laboratory has been conducting surveys over ten years of the intertidal organisms of Port Jackson, most intensively the rock platforms, with funding from the Shell C...