The flexibility and the wide deployment of IP technologies have driven the development of IP-based solutions for wireless networks, like IP-based Radio Access Networks (RAN). These networks have different characteristics when compared to traditional IP networks, imposing very strict requirements on Quality of Service (QoS) solutions, such as fast dynamic resource reservation, simplicity, scalab...

Ad hoc networks are wireless networks composed of mobile devices with limited power and transmission range. Advance reservations are a useful method to allocate resources of various kinds in many different environments, and especially be useful for wireless ad hoc networks that require network quality of service, which need advance reservation to support handovers for streaming video. It is key...

In this paper we study the optimal sourcing decisions of a multi-product newsvendor prior to the selling season of the products. To satisfy the uncertain demands, the newsvendor can either utilize speculative production, or anticipatively reserve capacity. During the selling season when demand has become known, the newsvendor can utilize its reserved capacity and reactively satisfy demand uncov...

this paper argues that a risk averse of workers after-tax reservation wage the difference between her reservation wage and the tax needed to fund the unemployment insurance system when liquidity constraint binds exists and it is unique. the optimality of unemployment insurance based on the responsiveness of reservation wage to unemployment benefit shows the disincentive effect, i.e. higher unem...

This paper models contracting arrangements between one Seller and one or more Buyers when the ‘‘deliverable’’ or output under the contract is produced in a non-scalable capital-intensive production facility. The basic model proposed allows the Seller and Buyers to negotiate bilateral contracts for the good in advance. On the day, the Seller and Buyers can also sell excess capacity or buy additi...

In cloud computing, cloud providers can offer cloud consumers two provisioning plans for computing resources, formal reservation and on-demand plans. Usually, cost of utilizing computing resources provisioned by reservation plan is cheaper than that provisioned by ondemand plan, since cloud consumer has to pay to provider in advance. With the reservation plan(Local Adjustment), the consumer can...

I n this paper, we study a single-product periodic-review inventory system that faces random and price-dependent demand. The firm can purchase the product either from option contracts or from the spot market. Different option contracts are offered by a set of suppliers with a two-part fee structure: a unit reservation cost and a unit exercising cost. The spot market price is random and its real...

Capacity reservation contracts and spot markets are two alternative purchasing practices. We focus on the cost-effective management of the combined use of these two procurement sources. Due to the variability of the spot market prices and demand uncertainty, the flexibility of combined sourcing can be advantageous. Spot market purchasing is a benefit in case of low spot market prices or insuffi...

We study capacity reservation contracts in high-tech manufacturing, where the manufacturer (the supplier) shares the risk of capacity expansion with her OEM customer (the buyer). We focus on shortlife-cycle, make-to-order products under stochastic demand. The supplier and the buyer are partners who enter a "design-win" agreement to develop the product, and who share demand information. The supp...

In future wireless multimedia networks, user mobility management for seamless connection regarding realtime multimedia applications is one of the most important problems. In this paper we propose an opportunity-cost conceptbased approach for adaptive bandwidth reservation with admission control for handover calls utilizing network traffic information. Excessive reservation guarantees low blocki...