This paper presents a bi-objective capacitated hub arc location problem with single assignment for designing a metro network with an elastic demand. In the literature, it is widely supposed that the network created with the hub nodes is complete. In this paper, this assumption is relaxed. Moreover, in most hub location problems, the demand is assumed to be static and independent of the location...

Cloud computing is a new computational and commercial model. It brings the illusion of a virtually infinite computing infrastructure/platform that provides advanced features. The increased number of VMs and applications in virtualized data centers triggers serious scalability concerns with regards to monitoring. Many features of Cloud need supports from underlying Cloud monitoring system. There...

So-called elastic flows, corresponding to document transfers of various types, constitute the bulk of Internet traffic. This paper presents models of a single bottleneck link handling elastic traffic, accounting for random flow arrivals. The transport protocol and packet scheduling are taken into account approximately by assuming perfectly realized bandwidth sharing objectives. We refer to the ...

We study a game theoretic model of competing network service providers that are connected in parallel and serial combinations and that strategically price their service in the presence of elastic user demand. Demand is elastic in that it diminishes both with higher prices and latency, which in turn grows linearly with a network’s usage. To obtain our results, we make an analogy between the game...

The paper focus on Fault Tolerance, a long standing problem in cloud computing by extending Primary Backup model to include cloud features such as virtualization and elasticity. Fault tolerance is a challenging work in Cloud Computing as virtual machines are the basic computing instances rather than hosts that enable virtual machines to migrate to other hosts. The on demand provisioning of reso...

We provide new evidence on consumer demand for ethical products from experiments conducted in a U.S. grocery store chain. We find that sales of the two most popular coffees rose by almost 10% when they carried a Fair Trade label as compared to a generic placebo label. Demand for the higher priced coffee remained steady when its price was raised by 8%, but demand for the lower priced coffee was ...

We examine how gasoline price volatility impacts consumers’ price elasticity of demand for gasoline. Results show that volatility in prices decreases consumer demand for gasoline in the intermediate run. We also find that consumers appear to be less elastic in response to changes in gasoline price when gasoline price volatility is medium or high, compared to when it is low. Moreover, we find th...

A fundamental puzzle about human behavior is the low level of household investment in preventive health inputs. We conducted a field experiment testing advertising devices designed to increase demand for a life-saving health technology characterized by low uptake. Our results reveal highly elastic demand with respect to factors that lie outside of standard consumer demand models of health behav...

Elasticities of demand and supply for South African manufactured exports are estimated using a vector error correction model in order to address simultaneity and non-stationarity issues. Demand is highly price-elastic, with elasticities ranging from –3 to –6. The price elasticity of supply is generally about 1, but some estimates are as low as 0.35. Competitors’ prices and world income are impo...

This paper considers a congested bottleneck. A fast lane reserves a more than proportional share of capacity to a designated group of travellers. Travellers are otherwise identical and other travellers can use the reserved capacity when it would otherwise be idle. The paper shows that such a fast lane is always Pareto improving under Nash equilibrium in arrival times at the bottleneck and inela...