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Is the following sentence correct, and is its use of the semicolon correct? Note that the use of the word 'concurrency' is meant to indicate a computer science term.
A host of design issues are encompassed by concurrency; that of interaction amongst processes, the sharing and competition for resources, the synchronisation of the activities of multiple processes and the allocation of processor time to processes.
I think I'd use a colon or a dash instead of a semicolon. It's being followed by a list, after all; but it's not wrong, just not optimal.
As for the list itself, it's not parallel enough. Parallel constructions reduce understanding effort and make things clearer to listeners and readers.
The four things in the list need to have more parallel structures, and I'd reduce them to three, putting the first and last together, and I'd use NP compounds instead of prepositional phrases, which are notoriously subject to attachment ambiguities
(btw, use among, not amongst, unless you're being consciously archaic, and there's no reason to use Passive in the main clause). So the "improved" sentence would be
Concurrency encompasses a host of design issues -- interaction and allocation of processor time among processes, sharing and competition for resources, and synchronisation of multiple process activities.
