In recent years, farming section of South Khorasan Province faces different limitations such as increasing shortage of water resources and continuous reduction of weather showers.Considering consecutive droughts and water crisis in agricultural plain of the province, it is necessary to use water resources optimally and increase productivity of water shortage input. Comparison of water productiv...

In the present study a deterministic bio-economic model was used to estimate economic values for reproduction traits (conception rate, twining rate and litter size), production traits (body weight of kid sold at 6.5 months, annual cashmere weight, body weight of doe and annual milk yield) and longevity (survival of doe, survival of kid until weaning and survival of kid until sale age at 6.5 mon...

The security of power consumption demand is an essential issue in maintaining a rapid economic development in China. Owing to the advantages such as the robustness and favorable estimation performances, the semiparametric model and nonparametric models have obtained wide popularity. In this article, based on the semiparametric and nonparametric models, a new estimation model is created, and the...

The interface between transportation investment and economic development has broad ramifications that go beyond transportation’s basic purpose of moving goods and people from one place to another. Whereas there is no doubt that transportation is essential in the operation of a market economy, much still needs to be understood about ways in which an efficient transportation system can improve th...

Why do studies that examine population aging always come to the same conclusions? Regardless of whether these studies focus on Japan or Germany, Northern Europe or Southern Europe, the developed economies or emerging market economies, they typically suggest that countries will confront a labor shortage which undermines economic growth and that they will confront rising pension and health care c...

In the classical inventory models, the common unrealistic assumption is that all the items produced are of good quality in nature. However, in realistic environment, it can be observed that there may be some defective items in an ordered lot. These items are usually picked up during the screening process and are sold as a single lot at the end of screening process. Further, it is tacitly assume...

The aim of this paper is to investigate the long run relationships among the Energy, Environment and the Economy (E-E-E). This paper also tests the Environmental Kuznets Curve (EKC) for the case of Pakistan. We find robust long run relationships between energy, environment and economic growth. It is also found that the capital and labor elasticities of income show decreasing returns in the pres...

International travel and tourism are among the most dynamic sectors in the modern economy. The phenomenal growth in international tourist arrivals has significantly outpaced global economic growth over the previous five decades, with particularly strong growth in the Asia and Pacific regions. Among other factors, changes in aircraft technology, economic prosperity and international air service ...