web servers, overloaded conditions, admission control strategy, performance analysis, optimization, SBAC In this paper, we use a session-based workload to measure a web server's performance. We define a session as a sequence of client requests. An overloaded web server can experience a severe loss of throughput when measured as the number of completed sessions. Moreover, the overloaded web serv...

In real-time environments, tasks have to complete by their deadlines. As we restrict our attention to mono-processor systems, a scheduling algorithm aims to determine which task is to execute on the processor [1,2]. On-line scheduling algorithms have been designed under non-overloaded conditions. We say that a real-time system is overloaded when it is impossible to schedule it on the processor ...

Type systems based on R. Milner’s concept of parametric polymorphism are recognized by the following facts: every well typed program has a uniquely defined denotational semantics, which ensures that the evaluation of a program will never produce a runtime type error. Additionally, every well typed program has a principal type such that every other type is an instance of the principal type. The ...

We use a session-based workload to measure a web server's performance. An overloaded web server can experience a severe loss of throughput when measured as the number of completed sessions. Moreover, the overloaded web server discriminates against longer sessions. Session based admission control (SBAC), introduced in [2], prevents a web server from becoming overloaded and ensures that longer se...

Mobile edge computing (MEC) allows the use of its services with low latency, location awareness and mobility support to make up for the disadvantages of cloud computing. But an overloaded MEC system or any MEC system failure significantly degrades quality of experience (QoE) and negates the advantages of MEC. In this paper, we propose two different recovery schemes for overloaded or broken MEC....

Cardiac energy metabolism of pressure-overloaded rat hearts was examined under in vivo and in vitro conditions. Two, 4 and 6 weeks after constriction of the abdominal artery, the hemodynamic and metabolic profiles of hearts in vivo and of perfused hearts were determined. Significant increases in left ventricular weight/body weight (30 to 45% increase relative to the sham group), systolic and di...

Overloaded phase codes for volume holographic data storage are introduced. In contrast to any previous phase-code design, overloaded phase codes enable multiplexing of a number of data pages that exceeds the number of utilized reference beams. In this way the achievable data capacity can be augmented. Overloaded codes are generated by extending multilevel phase codes based on the discrete Fouri...