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Reusability is widely suggested to be a key to improving software development productivity and quality [1,2]. It has been further argued that reuse at the requirements level can significantly increase reuse at the later stages of development [3,4]. However, there is little evidence in the literature to suggest that requirements reuse is widely practised.(More)
BACKGROUND Decision curve analysis (DCA) has been proposed as an alternative method for evaluation of diagnostic tests, prediction models, and molecular markers. However, DCA is based on expected utility theory, which has been routinely violated by decision makers. Decision-making is governed by intuition (system 1), and analytical, deliberative process(More)
Inconsistencies may arise in the course of specification of systems, and it is now recognised that they cannot be forbidden. Recent work has concentrated on enabling requirements descriptions to tolerate inconsistency and on proposing notations that permit inconsistency in specifications. We approach the subject by examining the use of an existing causal(More)
The design of distributed real-time systems is difficult because of the large number of issues involved with their design — inter-process communication, module structure, timing constraints, hardware constraints, reliability, etc. In this paper, we show how such issues may usefully be partitioned through the use of viewpoints before being combined together(More)
Managing any kind of complexity in a large scale systems development is a hard task. Viewpoints are a useful means of managing complexity and have been widely advocated in the eld of Requirements Engineering. This position statement outlines the beneets of using viewpoints as a means of managing the analytical complexity of safety critical systems and(More)
The use of a silane coupling agent (methacryloxypropyl-trichlorosilane) to improve the mechanical properties of steel fiber-reinforced acrylic bone cements was assessed. Changes to the tensile and fracture properties of bone cements reinforced with silane-coated or uncoated 316L stainless steel fibers of different aspect ratios were studied. Contact-angle(More)
Flight in insects can be long-range migratory flights, intermediate-range dispersal flights, or short-range host-seeking flights. Previous studies have shown that flight mills are valuable tools for the experimental study of insect flight behavior, allowing researchers to examine how factors such as age, host plants, or population source can influence an(More)