This paper addresses the single-item, non-stationary stochastic demand inventory control problem under the nonstationary (R,S) policy. In non-stationary (R,S) policies two sets of control parameters—the review intervals, which are not necessarily equal, and the order-up-to-levels for replenishment periods—are fixed at the beginning of the planning horizon to minimize the expected total cost. It...

This paper introduces the Burst Targeted Demand Assignment Multiple Access scheme with Pure Demand assigned slots (BTDAMA-PD), which employs a different approach to implementing DAMA, suited to handling long bursts from ON-OFF type data traffic sources. Its delay/throughput performance is compared with a variant of the Combined Free/Demand Assignment Multiple Access (CFDAMA) schemes. Simulation...

When demand for transportation is low or sparse, traditional transit cannot provide efficient and good-quality service, because of its fixed structure. For this reason, mass evolving toward some degree flexibility. Although the extension Dial-a-Ride systems to general public meets such need adaptability, it presents several drawbacks mostly related their extreme Consequently, new alternatives, ...

State-of-the-art revenue management systems combine forecasting and optimization algorithms with human decision-making. However, only a few existing contributions consider the behavioral aspects of management. To extend related research, we examine impact nonstationary demand two dynamic decision tasks. We decision-making strategies biases by implementing experimental design in laboratory study...

In this paper, we examine in an abstract framework, how a tradeoff between efficiency and risk arises in different dynamic oligopolistic market architectures. We consider a market in which there is a monopolistic resource provider and agents that enter and exit the market following a random process. Self-interested and fully rational agents dynamically update their resource consumption decision...

Rice comes second after wheat in Iran`s food consumption economy. However Iran is one of the greatest rice importer countries all over the world because of its rising population and recent growth in GDP. This paper presents an analysis of cointegration test between rice import and it`s economic factors over the period 1990-2011, employing Engle-Granger model. At first, Dickey-Fuller test shows ...

paper mills are characterized as polluting industries, these use pulping process for papermanufacturing, due to which toxic chemicals released into environment. therefore, the biological oxygendemand (bod), chemical oxygen demand (cod) of the emanating stream is high and dissolved oxygen (do) is low. to resolve this predicament, two dominant bacteria bacillus subtilis and micrococcus luteus, an...

In this paper we address the general multi-period production/inventory problem with non-stationary stochastic demand and supplier lead time under service-level constraints. A replenishment cycle policy (Rn,Sn) is modeled, where Rn is the n-th replenishment cycle length and Sn is the respective order-up-to-level. Initially we extend an existing formulation for this policy in a way to incorporate...

It is known that overlapping generations models with imperfectly competitive firm may exhibit a continuum of stationary equilibria. The reason of this indeterminacy is that different price expectation functions of consumers lead to different objective demand functions against which firm maximize. All these expectation functions fulfil perfect foresight in the equilibrium, but they can be arbitr...