As a major part of farming sustainability, the issues of grain production and its quality improvement have been important in many countries. This paper aims to address these issues in China. Based on the data from the main production provinces and by applying the stochastic frontier analysis methodology, we find that the improvement of transportation and the use of agricultural machinery have b...

The high-tech industry plays a crucial role in reducing carbon emission and achieving green economic development. This research uses Meta-Frontier data envelopment analysis to measure the innovation efficiency level of China’s provinces from 1999 2018, compares difference this industry’s under regional Frontier common Frontier, inspects convergence condition its three major areas eastern, centr...

Large-scale emissions of sulfur dioxide (SO2) from the combustion heavy fuel oils are deteriorating air quality in Tehran. Our analysis long-term SO2 emission data Tehran showed that magnitude local sources is inadequate to reach current levels. Bivariate polar plots, k-mean cluster, pairwise correlation, and potential source contribution function provided evidence impact large-scale transport ...

Increasing energy efficiency and exploiting energy saving potential are two important practices that can help to ensure future energy security in China. This paper proposes a new total factor energy efficiency indicator, based on the directional meta-frontier data envelopment analysis (DEA) approach, to account for the heterogeneity of production technology among provinces in China. This indica...

Introduction: Enhancing the green total factor productivity of dairy cows (GPDC) is crucial for fostering low-carbon sustainable development industry. Methods: This research utilizes Minimum distance to weak efficient frontier–Meta frontier–Malmquist–Luenberger (MinDW-MML) index examine GPDC using unbalanced panel data on in 26 provinces China from 2004 2020, taking into account regional hetero...

A survey on mite fauna of bird nests was carried out in Tehran, Golestan and Sistan & Baluchestan provinces in 2008. A total of 18 nests belonging to six bird species, namely Rock Dove Columba livia, House Sparrow Passer domesticus, Eastern Olivaceous Warbler Hippolais (Iduna) pallida, White-eared Bulbul Pycnonotus leucotis, Common Magpie Pica pica and Crested Lark Galerida cristata were collec...

in this article, we have used 36 electricity distribution companies of iran and by using input-oriented dea, we analysis the companies technical efficiency with respect to group frontier and metafrontier following restructuring, then we investigate the factors affecting efficiency. the companies decomposed to two groups in terms of high and low circuit density. for discussing the impact of stru...