introduction: oral contraceptives (ocs) are considered as one of the most common risk factor of venous thromboembolism (vte) in child bearing age. some of the recent researches indicate that the odds of vte may be even higher with newer generations of ocs. the present meta-analysis was designed to evaluate the effect of different generation of ocs on the occurrence of vte. methods: two research...

In this paper, we introduce a framework for modular generation of context-aware recommendations. The components of this framework include context sensors, recommender algorithms and utility modules (converters and filters), all realized as so-called services, which can flexibly be combined in terms of a recommender construction kit. Different areas of an application (e. g. a web portal) thus ca...

A combined refrigeration and power cycle, which uses ammonia-water as the working fluid, is proposed by combining Rankine and vapour absorption cycles with an advantage of varying refrigeration capacity to power output ratio. The study investigates the usage of low temperature heat sources for the cycle operation. Results of parametric analysis are presented, which show the scope for optimizati...

A GA based sequential circuit test generator is presented. In addition to the typical GA operations knowledge extracted during the evolutionary process is used to further guide test generation. Population sequences having low fitness values but detect different faults, which otherwise would be discarded, are combined and specially compressed into a single sequence that covers, at least, the fau...

This paper proposes an algorithm to discover novel association rules, combined association rules. Compared with conventional association rule, this combined association rule allows users to perform actions directly. Combined association rules are always organized as rule sets, each of which is composed of a number of single combined association rules. These single rules consist of non-actionabl...

Bare metal stents have a proven safety record, but limited long-term efficacy due to in-stent restenosis. First-generation drug-eluting stents successfully countered the restenosis rate, but were hampered by concerns about their long-term safety. Second generation drug-eluting stents have combined the low restenosis rate of the first generation with improved long-term safety. We review the evol...

Three combined power and refrigeration system are introduced to compare and analyze for a defined demand and same fuel consumption based on thermodynamic parameters in a 24 hours period. Gas turbine and/or steam turbine are used for power generation and also ejector refrigeration cycle is used to produce cooling. These three systems are named as GER, SER and GSER. The results of three systems a...