Airlines are increasingly using regional jets to better match aircraft size to high value demand markets, and reduce labor costs. This has been especially important due to the increased pressure on the industry following September 11 2001, because airlines see regional jets as a major part of their financial recovery plan. The increase in regional jets represents a significant change from tradi...

Motivated by a congestion problem arising in a Chinese hospital, an M/Ek/1 queueing system, where the service process is subject to no damage interruptions has been considered. When the first phase of service is completed, the service process can be interrupted with probability 1 − p (0 ≤ p ≤ 1) as a result of the customer leaving the service area to attend to otherwork. There is a finite space...

We studied the effects of hypoxia and reoxygenation on steady-state contractions and potentiated contractions of papillary muscles of guinea pigs. Isometric tension was measured while 120 min periods of hypoxia and reoxygenation were repeated twice. Reoxygenation after the first period of hypoxia induced a gradual recovery in steady-state contractions and a rapid recovery in potentiated contrac...

J Rehabil Med 45 © 2013 The Authors. doi: 10.2340/16501977-1165 Journal Compilation © 2013 Foundation of Rehabilitation Information. ISSN 1650-1977 Objective: To investigate the value of combining information from resting-state functional connectivity and passive movements, measured with functional magnetic resonance imaging (fMRI), in acute stroke patients with severe motor impairment. Subject...

The fundamental goal of the log-based fault-tolerant scheme is to bring the system into a consistent global state without any orphan inconsistence. However, the existing Alvisi’s No-Orphans Consistency Condition is only sufficient on condition that the set of local checkpoints of failure processes keep consistent always. Independent of the specific log-based checkpointing and rollback-recovery ...

This study is concerned with the performance modeling of a fault tolerant system consisting of operating units supported by a combination of warm and cold spares. The on-line as well as warm standby units are subject to failures and are send for the repair to a repair facility having single repairman which is prone to failure. If the failed unit is not detected, the system enters into an unsafe...

Computer interfaces that support user recovery can radically alter a user's interaction style. Users can explore alternatives freely, secure in the knowledge that they can undo actions and restore previous states if necessary. A text-editor, like EMACS, where users can restore the state of an editing session to a correct previous state, is an example of such a system. Editors for textual, graph...

In designing and building distributed systems, it is common engineering practice to separate steady-state (“normal”) operation from abnormal events such as recovery from failure. This way the normal case can be optimized extensively while recovery can be amortized. However, integrating the recovery procedure with the steady-state protocol is often far from obvious, and can present subtle diffic...

A patchwork method is used to study the dynamics of loss and recovery of an initial configuration in spin glass models in dimensions d = 1 and d = 2. The patchwork heuristic is used to accelerate the dynamics to investigate how models might reproduce the remarkable memory effects seen in experiment. Starting from a ground state configuration computed for one choice of nearest neighbor spin coup...