This paper presents a new framework for the day-ahead reactive power market based on the uniform auction price. Voltage stability and security have been considered in the proposed framework. Total Payment Function (TPF) is suggested as the objective function of the Optimal Power Flow (OPF) used to clear the reactive power market. Overload, voltage drop and voltage stability margin (VSM) are inc...

the marketing services and marketing margin of pistachio is reviewed as an agricultural product for export. about 90 percent of pistachio production is in kerman province, from which 60 percent is in rafsanjan. the results show that the share of the country in the world pistachio market is decreased in the last 10 years. the main problems for marketing are storing, packing and transporting.

We model a real-world case problem as a price competition model between two leader-follower supply chains that each of them consists of one manufacturer and one retailer. T he manufacturer produces partially differentiated products and sells to market through his retailer. The retailer sells the products of manufacturer to market by adding some values to the product and gains margin as a fracti...

this study analyzed the performance of cabbage marketing in abia state, nigeria. specifically the study sought to: describe socio-economic characteristics of cabbage marketers; identify marketing channels of cabbage; determine marketing cost components of cabbage marketers; determine marketing margins, market share and marketing efficiency of cabbage marketers; and determine socio-economic fact...

Executive Summary The lack of market information represents a significant impediment to market access especially for smallholder poor farmers: it substantially increases transaction costs and reduces market efficiency. For any one crop, the marketing chain consists of multiple middlemen, each taking a margin at every stage of the chain, and price variations in space and time are often large and...

A cointegrated vector autoregressive (CVAR) model is estimated to determine the dynamic relationship between Nordic wholesale electricity prices and EU emissions trading scheme (EU-ETS) CO2 allowance prices. An impulse response analysis reveals that electricity prices have large short-term responses to CO2 price shocks, but that this response dampens over time. Using hourly Nordic electricity s...

Our model addresses selection at the extensive margin and abstracts from intensive margin selection amongst differentiated plan. Our modeling decision follows naturally from the policy intervention, the individual mandate, which affects the demand for health insurance in general. While our framework may not be accurate in other contexts, we think that the modeling assumptions are sensible in th...

This paper presents a validation framework for collateral requirements or margins on a derivatives exchange. It can be used by investors, risk managers, and regulators to check the accuracy of a margining system. The statistical tests presented in this study are based either on the number, frequency, magnitude, or timing of margin exceedances, which are de…ned as situations in which the trading...

in this study, in addition to estimating meat demand, live animal supply and marketing services supply for beef and lamb, economic behavior of marketing margin with respect to determinants of meat demand, live animal supply and marketing services supply have been evaluated for years 1998-2004. results indicate that, as examples, beef and lamb marketing margin elasticity with respect to feed pri...