Manufacturing systems have become more complex regarding the determination of critical overloads of cognitive tasks, due to the high technology. As a result, the nature of ergonomics has also changed into cognition. In this study, a quantitative model for determination of cognitive factors has been proposed to determine cognitive maps coupled with a fuzzy decision-making process to identify fac...

Single plane cineangiography, either in the anteroposterior or in the right anterior oblique projection, can be used to determine left ventricular volumes. Volumes so obtained showed good agreement with those reported by others using biplane techniques. Ejection fraction and ejection rate derived from such volumes were normal in patients with mitral stenosis and with chronic compensated pressur...

Social Networking Sites (SNSs) shape the individuals’ online network structures and real life communication patterns. However integrating offline networks and lowering communication cost can increase social support as well as social stressors (overloads and conflicts). This study focused on the online network structure’s influence on both positive and negative outcomes of SNSs usage. In this pa...

In complex real-time applications, real-time systems handle significant amounts of information that must be managed efficiently, motivating the need for incorporating realtime database management into real-time systems. However, resource management in realtime database systems is a complex issue. Since these systems often operate in environments of imminent and transient overloads, efficient ov...

Self-propelled machines are the main resources used by Polish copper ore mining industry to transport from area reloading points for conveyor transport. Due difficult conditions, they must meet high requirements in terms of operational efficiency, safety, and reliability. One most significant challenges is robustness dynamic overloads. In practice, have a strong dependency on pavement influence...

In this paper a new method is introduced to increase the resiliency of a distribution grid by forming robust microgrids after extreme contingencies following disasters. The method tries to serve as much load as possible by forming microgrids with alleviated vulnerability based on the Manchester model and optimal AC power flow. The main feature of the proposed method is that the formed microgrid...

In this work the results of two simple strategies to improve the performance of local real-time schedulers are presented. The main goals are to increase system stability under transient overloads and to improve the use of system resources when tasks have stochastic execution times. To do so, traditional schedulers are combined with a multiple queue algorithm and an on-line guarantee test. Resul...

The prevalent use of the Session Initiation Protocol (SIP) in Next Generation Networks necessitates that SIP networks provide adequate control mechanisms to maintain transaction throughput by preventing congestion collapse during traffic overloads. A loss-based solution to remedy known vulnerabilities of the SIP 503 (Service Unavailable) overload control mechanism has already been proposed. Usi...

To operate successfully, most large distributed systems depend on software, hardware, and human operators and maintainers to function correctly. Failure of any one of these elements can dis­ rupt or bring down an entire system. One such distributed system, the US Public Switched Telephone Network (PSTN), is the US portion of pos­ sibly the largest distributed system in existence.1 Like all tele...