This paper describes a novel method for measuring the degree to which a set of test cases executes a given program in diverse ways with respect to the two fundamental programming concepts: control and data. Test Diversity is a method for measuring the variety of software control flow and data flow, comprising of four new measures: conditional diversity, data diversity, standard deviation of div...

In today’s Internet, the primary transport mechanism for video streams is the UDP protocol, either congestion sensitive or not. In this paper, we propose a mechanism that supports the high quality streaming and adaptation of stored video across best-effort networks using the TCP transport protocol. Our proposed approach has a number of useful features. First, it is built on top of TCP, which ef...

Traditionally, Internet service providers provide the same level of service (the so-called "best-effort" service) to all kinds of network traffic. For traditional non-real-time Internet traffic such as File Transfer Protocol (FTP) data, the best-effort service has not been a problem. However, the result of today's tremendous growth of Internet not only involves traffic increasing in volume, but...

The usual best-effort nature of services provided by currently available computing systems is unsuitable for a series of novel applications which require more predictable behaviour. These applications range from embedded control systems to desktop multimedia applications, and have very specific service requirements according to the activity performed or to the tolerance of the user. The require...

We put forward a novel model for self-organized criticality in the dynamics of systems controlled by human actions. The is based on two premises. First, without control, system issue undergoes supercritical instability. Second, subject’s actions are aimed at preventing occurrence critical fluctuations when risk control failure becomes essential rather than keeping stability region. latter premi...