Unit commitment (UC) problem tries to schedule output power of generation units to meet the system demand for the next several hours at minimum cost. UC adds a time dimension to the economic dispatch problem with the additional choice of turning generators to be on or off.  In this paper, in order to improve both the exploitation and exploration abilities of the firefly algorithm (FA), a new mo...

A power system is a nonlinear one. When turbulence occurs in the power system, the stability of the system depends on the initial operating conditions and the nature of the turbulence. Nowadays renewable energy sources including photovoltaic have a key role to meet high demand of modern societies and to maintain voltage of the buses, while they also provide clean electrical energy. However, inc...

Parallel processing is an area of growing interest to the computer science and engineering communities. This paper is an introduction to some of the concepts involved in the design and use of large-scale parallel systems. Parallel machines that are classified as SIMD (synchronous) and MIMD (asynchronous) systems, composed of a large number of microprocessors, are explored. Parallel algorithms a...

1. Historical Background 2. Modeling and Model Reduction 2.1. Aggregation 2.1.1 Balanced Aggregation 2.2. Perturbation 2.2.1. Weakly Coupled Models 3. Strongly Coupled Models 4. Hierarchical Control 4.1. Goal Coordination: Interaction Balance 4.2. Interaction Prediction 5. Decentralized Control 5.1. Stabilization Problem 5.2. Fixed Modes and Polynomials 5.3. Stabilization via Dynamic Compensati...

Building systems from existing applications written in two or more languages is common practice. Such systems are polylingual. Polylingual systems are relatively easy to build when the number of APIs needed to achieve language interoperability is small. However, when the number of distinct APIs become large, maintaining and evolving them becomes a notoriously difficult task. We present a practi...

Neuromorphic computing covers a diverse range of approaches to information processing all of which demonstrate some degree of neurobiological inspiration that differentiates them from mainstream conventional computing systems. The philosophy behind neuromorphic computing has its origins in the seminal work carried out by Carver Mead at Caltech in the late 1980s. This early work influenced other...

Cooperative and peer-to-peer services both seek to provide a way to scale services beyond what can be provided by even a high-end server machine. Cooperative services do this by treating a service as a parallel program and then running the program across a cluster of machines. Key challenges include rearchitecting services not only to provide good performance by balancing parallelism and locali...

In this chapter, scheduling is defined as the activity that consists in mapping a task graph onto a target platform. The task graph represents the application, nodes denote computational tasks, and edges model precedence constraints between tasks. For each task, an assignment (choose the processor that will execute the task) and a schedule (decide when to start the execution) are determined. Th...

— This paper introduces systolic automata for VLSI as highly concurrent acceptors. Attention is focused on tree automata although other types are also discussed briefly. A number of preliminary results about the capabilities of such automata are obtained. The approach not only opens up a new and interesting area oflanguage theory but also its results give useful hints for VLSI system design par...