implementation of effective input policies and technology consistent with production structure contributes to the economic use of the production. understanding the price elasticity of input and relationship between inputs in the agricultural sector is helpful in choosing appropriate input policy. in this study we examine the production structure of pistachio in damghan. to achieve the goal, tra...

In this paper, a production inventory model is developed for the business enterprise which consists of three wings. The first wing is for manufacturing new items, the second wing is for collecting the returned items, while third wing is for remanufacturing the returned item. In this model we consider the fact that the storage item is deteriorated during storage periods and salvage value is inco...

In this paper, a bi-objective multi-product single-vendor single-buyer supply chain problem is studied under green vendor-managed inventory (VMI) policy based on the economic production quantity (EPQ) model. To bring the model closer to real-world supply chain, four constraints of model including backordering cost, number of orders, production budget and warehouse space are considered stochasti...

In this paper, we present a detailed theoretical analysis on the information-theoretic Independent Component Analysis (IT-ICA) approach. We "rst provide a number of lemmas and theorems on properties of the corresponding cost function in the general n-channel case with di!erentiable, odd, monotonic decreasing nonlinearity. A theorem on behaviour of the cost function along a radially outward line...

due to the being in the desert bar and ecosystem sensitivity to water , water management in the agricultural sector of the iran is one of the priorities of managers and planners of this section. therefore accurate modeling of the production function, for policies to increase efficiency and reduce the use of inputs, as well as forecasts for the timely supply with low cost, is of utmost importanc...

The crops always demand the best composition of soils for them to grow well and so the multielemental study of soil is essential for the betterment of crop production. The EDXRF technique has been used for multielemental analysis of the soil, under study. The soil samples investigated here were treated already with macro, micro and biofertilizers. The concentrations of eight trace elements name...