Tyburn Tyburn Tyburn was a village in the county of Middlesex close to the current location of Marble Arch and the southern end of Edgware Road in present-day London. It took its name from the Tyburn Brook, a tributary of the River Westbourne. The name Tyburn, from Teo Bourne meaning 'boundary stream', is quite widely occurring, and the Tyburn Brook should not be confused with the better known River Tyburn, which is the next tributary of the River Thames to the east of the Westbourne. For many centuries, the name Tyburn was synonymous with capital punishment, it having been the principal
Execution model Execution model An execution model specifies how work takes place. Every programming language has an execution model, which is specified as part of the language specification, and is implemented as part of the language implementation. The details in the specification of an execution model cover things such as what is an indivisible unit of work, and what are the constraints on the order in which those units of work take place. For example, the addition operation is an indivisible unit of work in many languages, and in sequential languages such units of work are constrained to take place one after