The emergence of budget airlines, the advent of new sales channels, the disappearance of traditional fare-class fences, and other on-going changes in the airline industry pose serious challenges to traditional revenue management models, which make some rigid and unrealistic assumptions. One of these is that passengers who do not get the fare they want book and travel on other airlines or do not...

Carotid artery injuries are not common in trauma patients although they are associated with a high morbidity and mortality. The practician needs to have a high level of suspicion in trauma patients with injuries of the neck and skull, and always taking into consideration the mechanism of injury. Prompt diagnosis and treatment are imperative for optimal results. This review aims to focus on main...

Network services must self-adapt dynamically in order to accommodate available resources, system errors, and changing requirements. This need for self-reliance will increase with the growing flexibility and heterogeneity that characterizes such network technologies as sensor (ad hoc) networking, grid computing, and pervasive computing. The downside of traditional distributed network management ...

Glaucoma management aims to preserve patients' quality of life by halting progressive visual loss. Intraocular pressure reduction is the pivotal strategy: we establish a "target" pressure based on extent of visual damage, threat to visual performance, risk profile for further damage, pre-treatment pressure levels, family history and a patient's life expectancy. Once an acceptable treatment regi...

George Amvrosiadis is a PhD student in computer science at the University of Toronto. His research interests include storage reliability and idleness characterization, detection, and utilization. He completed his BS at the University of Ioannina in Greece, with a thesis on namespace management of federated file systems. [email protected] Andy A. Hwang is a PhD student at the University of...

The notion of $f$-derivations of UP-algebras is introduced, some useful examples are discussed, and related properties are investigated. Moreover, we show that the fixed set and the kernel of $f$-derivations are UP-subalgebras of UP-algebras,and also give examples to show that the two sets are not UP-ideals of UP-algebras in general.

conclusions implementing the self-management program plus regular follow-up increased the perception of self-efficacy in patients with ms. similar self-management programs are recommended to be integrated in the regular caring of patients with ms. results no significant difference in mean scores of baseline self-efficacy was found between the control (52.90 ± 8.03) and the intervention groups (...