In capital breeders, individual differences in body size and condition can impact mating effort and success. In addition to the collateral advantages of large body size in competition, large nutrient reserves may offer advantages in endurance rivalry and enable the high rates of energy expenditure associated with mating success. We examined the impacts of body reserves and dominance rank on ene...

What is the effect of imports on productivity? To answer this question, we estimate a structural model of producers using product-level import data for a panel of Hungarian manufacturing firms from 1992 to 2001. In our model with heterogenous firms, producers choose to import or purchase domestically varieties of intermediate inputs. Imports affect firm productivity through expanding variety as...

The paper addresses the link between productivity and labour mobility. The hypothesis tested is that technology is transmitted across industries through the movement of skilled workers embodying human capital. The embodied knowledge is then diffused within the new environment creating spillovers and leading to productivity improvements. The empirical analysis is based on household survey and in...

Besides frontiers and Data Enveloped Analysis approaches, a combination between the aggregate production function technical efficiency can be performed using Corrected Ordinary Least Square approach. Unfortunately, there are no studies in Indonesia that use this This paper mainly how approach combines efficiency. The methods modeling, correcting, measuring. data Gross Regional Domestic Product ...

This study explores the impact of social capital on innovation by constructing a more general measure of social capital indicator consisting of generalized and institutional trust, associational activities and civic norms. We test the hypothesis that social capital has a positive impact on innovation at the national level. After controlling for R&D expenditure and human capital there is a posit...

This article intends to estimate the optimal value of investment and human capital in R&D sector of Iranian economy using an augmented endogenous growth model. To do so, two issues have been studied. First, an endogenous growth model has been extended to include investment in R&D as an independent variable. In the framework of this model, in order to determine the optimal value of investment an...

Based on the spatial economics and regional innovation cooperation theory, this paper modified and redefined the spatial knowledge spillover model by Caniels, and then made empirical analysis on the influence factors of knowledge exchange among members in the innovation network via panel data method. This paper takes forward fixed traffic distance. Then it has proved the important influence fro...

Green innovation is a critical driver in achieving the goals of “carbon peaking” and neutrality”, as well an important aid accelerating green transformation. Does opening-up digital services trade, major component high-level strategy, serve to improve quality Chinese enterprises at this juncture China’s promotion ecological civilization? To answer question, paper measures degree openness trade ...

One of the most important issues in all stages of mining study is capital cost estimation. Determination of capital expenditure is a challenging issue for mine designers. In recent decade, quite a few number of studies have focused on proposing estimation models to predict mining capital cost. However, these efforts have not achieved to a predictor model with reliable range of error. Both of ov...