This paper presents an analysis of technical efficiency and technology gap ratio (TGR) in greenhouse cucumber in Fars Province, Iran. Cucumber production was chosen for this study for the reason that greenhouse productions in this provincemainly have focused on this product. The data used in this study was obtained from a random sample of 127 greenhouses in Fars Province for 2010 to 2011. Metaf...

the contact between major settlements in the central plateau of iran, especially in desert areas, was not possible without having a secure communication system. in this regard, designing communication networks through constructing secure roads with halfway caravansarais in desert areas, usually without secure underground and surface water supply, needed special insights and provisions. iranians...

abstract the contact between major settlements in the central plateau of iran, especially in desert areas, was not possible without having a secure communication system. in this regard, designing communication networks through constructing secure roads with halfway caravansarais in desert areas, usually without secure underground and surface water supply, needed special insights and provisions....

Countries located in the Mediterranean region share many common features terms of agricultural sustainability and economic realities modern farming, as they are affected by water scarcity, energy use climate suitability. Greenhouses considered a mitigation measure to combat change sustainable production system. The majority greenhouses rudimentary, while those Central North Europe characterized...

using the usual definitions of information and entropy in quantum gravity and statistical mechanics and the existing views about the relation between information and complexity, we examine the evolution of complexity in an ever expanding universe.

The move towards a de-carbonised world, driven partly by climate science and the business opportunities it offers, will need promotion of environmentally friendly alternatives, if an acceptable stabilisation level atmospheric carbon dioxide is to be achieved. use natural resources that have not any air pollution or greenhouse gases provides comfortable coexistence human, livestock, plants. gree...