In this article the place and capacity of combined heat and power [CHP] prediction unit wasdetermined dynamically with use of modified particle swarm optimization (MPSO). It was done inoptimization palace and with a capacity of CHP as a production resource with the aim to increasethe reliability capacity. Decrease the loss and provide the electrical and thermal energies ofindustrial city. The f...

quantitative analysis of production through evaluation of inputs consumption quantity is of main principles in agricultural policies, which is followed by increasing in production through optimal use of resources. this study has been conducted to estimate different types of production functions in mechanized farms of broiler chicks located in gorgan city. cross-section survey data were gathered...

In this work, studies of underground gas storage (UGS) were performed on a partially depleted, naturally fractured gas reservoir through compositional simulation. Reservoir dynamic model was calibrated by history matching of about 20 years of researvoir production. Effects of fracture parameters, i.e. fracture shape factor, fracture permeability and porosity were studied. Results show...

sio2-supported silyl chromate catalyst is an important industrial catalyst for production of high grade hdpepipe materials. the control of the short chain branch (scb) distribution using this catalyst system is still a greatchallenge. in this work, ethylene and 1-hexene copolymers were synthesized using sio2-supported silyl chromatecatalyst combined with triisobutylaluminium (tiba), triethylalu...

in this paper, we develop an inventory model for perishable items with random lifetime in a two-echelon production-distribution system. there is a manufacturer at the first stage that produces its product with a constant rate. deterioration in this stage is modeled via a two-parameter weibull distribution. at the second stage, the retailer places the order and receives the product instantly. th...

infrastructure plays an important role in the process of economic development. access to such infrastructures as safe piped drinking water, educational and health services, electrification and efficient transport system enhance human welfare. the main objective of this study is to determine the contribution of the main types of infrastructure investments to reduction of poverty and more balance...

Operational remote sensing systems are currently being used to monitor crop growth and climate to map impacts on crop production. The linking of these data to traditional crop forecasting systems has the capacity to improve both the spatial and temporal resolution of crop forecasts.

the first experimental sam for iran was constructed more than three decades ago under the supervision of prof. pyatt. based on this work prof pyatt had observed that the way in which iran was spending oil revenues was likely to exacerbate urban—rural income differentials in iran. in his approach to sam he did not distinguish between factorial and institutional income distributions preferring to...