An application’s quality of service (QoS) depends on resource availability; e.g., response time is worse on a slow machine. On the cloud, a virtualized application leases resources which are made available on demand. When its work load increases, the application must decide whether to reduce QoS or increase cost. Virtualized applications need to manage their acquisition of resources. In this pa...

| The expanding penetration of nondispatchable renewable resources within power system generation portfolios is motivating the development of demand-side strategies for balancing generation and load. Commercial heating, ventilation, and air conditioning (HVAC) loads are potential candidates for providing such demand-response (DR) services as they consume significant energy and because of the te...

Public hospitals in Greece are part of a National Health System, established in 1983. This paper presents the hospital sector changes in Greece over the last 20 years, emphasizing cost efficiency. We break down its historical developments into two periods: 1983-1999 and 2000-2008. From the historical review, it is concluded that the system is cost inefficient, based on two components. First, a ...

Internet services experience frequent changes in demand, resource characteristics and service requirements. A service can meet its requirements with minimal cost only if the allocation of its distributed resources can be adaptively controlled. The design of adaptive control schemes requires a solid understanding of the dynamic characteristics of the distributed service, demand and resources. Th...

The investment interests in the electricity industry are transmitted through various mechanisms to other economic activities. This paper considers methods for esteeming the adaptability of demand-side response (DSR) in its capacity to react to future uncertainties. The capacity to evaluate this adaptability is particularly critical for vitality frameworks speculations given their extensive and ...

Maximizing the potential value of demand-side resources in terms network reliability and economy is a considerable challenge because their time-varying potentially complex operational characteristics. It urgent to take interactive relationship between supply demand side into consideration improve efficiency practicability distribution planning enhance utilization existing equipment. In this pap...

The one-demand Hotelling model fails to explain the observed specialization of nonrenewable resources. We develop a model with multiple demands and resources to show that specialization of resources according to demand is driven by Ricardian comparative advantage while the order of resource use over time is determined by Ricardian absolute advantage. An abundant resource with absolute advantage...