PURPOSE We aimed to determine the predictors of technical success and patency after percutaneous transluminal angioplasty (PTA) of de novo dysfunctional hemodialysis arteriovenous fistulas (AVF). METHODS We performed a retrospective analysis of first time PTA in 228 patients (129 men, 99 women; mean age, 56.8±14.6 years). Anatomical (location, length, grade, and number of stenoses) and clinic...

Specifying behavioral specifications for components apart from the conventional syntactic interface specifications can be very useful in component based system development. Preconditions and postconditions describe one form of behavioral aspects of components. We discuss a tool and an implementation mechanism to incorporate behavioral contracts expressed in terms of preconditions and postcondit...

The most recent left-to-right and right-to-left multibase exponentiation methods are compared for elliptic curve and modular residue groups to gauge the value and cost of switching from the normal left-toright mode to the more side channel resistant right-to-left direction in a resource constrained environment.

In agile methodologies communication between programmers is very important. Some of them (e.g. XP or Crystal Clear) recommend pair programming. There are two styles of pair programming: XP-like and side-byside (the latter comes from Crystal Clear). In the paper an experiment is described that aimed at comparison of those two styles. The subjects were 25 students of Computer Science of 4 and 5 y...