Technology scaling and manufacturing process affect the performance of digital circuits, making them more vulnerable to environmental influences. Some defects are shown as delay faults therefore their testing is very important, mainly path delay faults. Such faults are tested over critical paths which have to be specified in a digital circuit. A problem of the critical paths selection is discus...

Approaches to shorten workflow execution time have been discussed in many area of computer engineering such as parallel and distributed systems, a computer circuit, and PERT chart for project management. To optimize workflow model structure of workflow, an approach with corresponding algorithms is proposed to cut timed critical path of workflow schema, which has the longest average execution ti...

It is shown that two arbitrary equilibria in the general equilibrium model without sign restrictions on endowments can be joined by a continuous equilibrium path that contains at most two critical equilibria. This property is strengthened by showing that regular equilibria having an index equal to 1, a necessary condition for stability, can be joined by a path containing no critical equilibrium...

Xu Zhao is a graduate student at the University of Toronto. He received a B.Eng. in computer science from Tsinghua University, China. At U of T, his research is focused on reliability and performance of distributed systems. [email protected] Large, production-quality distributed systems still fail periodically, sometimes catastrophically where most or all users experience an outage or d...