Canadian researchers are now trying to exploit much more energy from solar sources, hydropower, wind, and biomass. Given the fact that reducing the carbon pollutant level is a political priority in Canada, this paper studies the feasibility of providing sanitary hot water and space heating demands of a four-member family in 10 provinces in this country. The feasibility analysis was performed by...

Two kinds of epoxy resin, a soft one with rubber-based additives and an ordinary hard one, are used as electrical insulators airtight sealants in penetrations nuclear power plants (NPPs). Knowing how they behave under adverse environments is important for the safe operation NPPs. In this regard, we gave artificial thermal ageing treatment to two resins by heating them air at various temperature...

Collection classes are ideal candidates for software reuse and can therefore play an important role in the development and use of object-oriented class libraries. In this paper we point out problems in existing objectoriented collection libraries from the viewpoint of their useability in programs. We identify a small number of software engineering concepts relevant to the design of libraries of...

The hypothesis was tested that respiratory illness in children occurs more commonly in old housing than in housing built to modern standards. Three areas of housing were chosen in a South Wales valley: a recently constructed council estate with district central heating; a modern council estate heated with open coal fires; and an area of much older, traditional valley housing. Mothers reported t...

In the last 50 years, very many new energetic compounds have been made as potential ingredients for explosive, propellant and pyrotechnic formulations. Of these compounds very few have come to be used in military munitions. To obtain a better understanding of why this has been the case and to help address the discrepancy, the NATO Insensitive Munitions Information Centre (NIMIC) held a workshop...

Agile Software practices place great emphasis on coding, yet coding is time-consuming, difficult, and the source of many errors. The paper describes a way in which the specification and implementation processes can be unified, and much coding avoided as regards the behavioural aspects of the software. It shares much in common with Agile Methods, yet permits a significant degree of modeling to t...

Traldi, L., Generalized activities and K-terminal reliability, Discrete Mathematics 96 (1991) 131-149. Suppose each edge of a graph G has a given probability of being useable, and suppose K is some subset of the vertex-set of G. We present a polynomial that is useful in assessing the probability that the elements of K will lie in a particular number of components of the useable portion of G. th...