In this research we develop mathematical models of Joint Economic Lot-sizing Problem (JELP) in a situation when a supplier offers time-based temporary price discounts to a buyer during a sale period. To respond this, the buyer places a special order with higher quantity. In literature, it has been assumed that the buyer tends to place the special order at the end of the sale period. We relax th...

The purpose of this research is to identify the impact of price hike on the living standard of middle income people. The researchers tried to identify the alternatives of middle class people in face of price hike or inflation. This descriptive analytical research is conducted by random probability sampling. The data were collected by a well designed questionnaire that was tested by experts in t...

there are several researches that deal with the behavior of ses and their relationships with different economical factors. these range from papers dealing with this subject through econometrical procedures to statistical methods known as copula. this article considers the impact of oil and gold price on tehran stock exchange market (tse). oil and gold are two factors that are essential for the ...

Temporary crediting of carbon storage is a proposed instrument that allows entities with emissions reductions obligations to defer some obligations for a fixed period of time. This instrument provides a means of guaranteeing the environmental integrity of a carbon sequestration project. But because the user of the temporary credit takes on the liability of renewing it, or replacing it with a pe...

Iran has suffered ever-increasing domestic energy consumption, mostly because of its long-standing price control policy. To decelerate this trend, Iran began a reform on its energy subsidy system in December 2010. This paper examines the inflationary impact of the energy subsidy reform on different Iranian non-energy sectors and urban and rural households by making an updated input–output...