Researchers of regional and international productivity comparisons are increasingly adopting various frontier approaches to examine convergence and the possible causes of productivity differences. We argue that economy-wide technology frontiers estimated with aggregate measures of output are downward biased. This bias extends not only to estimates of the technology frontier, but also produces i...

During the period of 1971 to 1979, 172 Proteus mirabilis and 17 Proteus vulgaris strains were collected from blood cultures. Of these strains, 144 could be grouped into 25 O antigens. The most common antigens were O3, O23, O10, O30, and O24, which represented 46.1% of all strains. The O antigen distribution of strains isolated from blood cultures did not differ significantly from that of fecal ...

ObjectiveTo determine the effectiveness of adapting healthy food retail components for online delivery.Use Theory or ResearchSmall stores that accept SNAP/EBT are important sources low-income Americans, especially in areas where traditional grocery difficult to access. SNAP-Ed recognizes interventions as an approach encourage eating and support direct nutrition education.Target AudienceSmall ce...

The purpose of this study is to explain the market diffusion satellites by exploring how early adopters raise regulatory barriers adoption. Such influence has not been explored significantly in literature analyzing industrial products. In paper, we adopt a macro and longitudinal approach case from 1959 2017. results indicate that hinder takeoff therefore entry mainstream adopters. Overall, find...

one of the leading causes of death and disability in the middle east is road traffic accidents. there are multiple factors that cause these traffic accidents, and the most important of which is fatigue, drowsiness and lack of concentration. the risk of road traffic accidents due to sleepiness, which were reported by police, increased by more than sevenfold in low alertness hours during circadia...

We use skills surveys from 53 countries to estimate jobs’ amenability working home (WFH). Our measure combines data on self-reported characteristics and internet access into a standardized measure. find that WFH increases with economic development. Women, college graduates, salaried formal workers have jobs are more amenable than the average. The opposite holds for in hotels restaurants, constr...

This research examines whether technology transfer, research intensity, educational attainment and the ability to absorb foreign technology help explain cross-country differences in productivity growth. Our data comprise a panel of 55 countries including 23 OECD and 32 developing economies over the period 1970-2004. The results show that TFP growth in both OECD and developing countries is posit...

In the model where the choices of technology by firms endogenously determine productivity differences, we investigate the link between factor endowment and the productivity both in the firm and industry levels. We find among others that firms in capital-abundant countries tend to adopt new advanced technologies more in their production processes, and that opening to international trade will not...

Complex evolving systems, consisting of populations of varied and replicating entities are found in both nature and human society. There exists no alternative to the core Darwinian principles of variation, selection and inheritance to explain the evolution of such systems. Neither the actual existence of human intentionality nor the hypothetical possibility of Lamarckian acquired character inhe...

Two issues related to mapping a multi-sector model into a reduced-form value-added model are often neglected: the composition of intermediate goods, and the distinction between value added productivity and gross output productivity. We demonstrate their quantitative significance for the case of the well known model of Greenwood, Hercowitz and Krusell (1997), who find that about 60% of economic ...