Roleplay: Three Questions and Answers

Injury prevention and occupational safety: four questions, three answers.

Author’s note: This paper is written in the first person for two reasons. First, I teach writers to use the “active voice” whenever possible and must practise what I preach. Second, and more germane, this is a highly personal account of my impressions of an area in injury prevention that I make no pretence I know well. It is an account of a voyage of discovery and cannot be dignified by the tra...

Three-dimensional echocardiography: raising questions and providing answers.

Questions, Answers and Presuppositions

The paper deals with empirical questions that come attached with a presupposition. In case that the presupposition is not true, there is no unambiguous direct answer. In such a case an adequate complete answer is a negated presupposition. Yet these simple ideas are connected with a bunch of problems. First, we must distinguish between a pragmatic and semantic presupposition, and thus also betwe...

Datalog+/-: Questions and Answers

• What is Datalog± and what are its advantages? Datalog± is a rule-based formalism that combines the advantages of logic programming in Datalog with features for expressing ontological knowledge and advanced data modeling constraints. Datalog± provides a uniform framework for query answering and reasoning with incomplete data. It generalizes disparate other KR formalisms such as plain Datalog, ...

Some Questions and Answers

A heat pump is an electrically-ponered refrigerationcycle device which is capable ofproviding both heating and cooling to a residence. In the sumrrcr, it operates like an air conditioner by "moving" heat from inside the house to the outside. In the winter, the refrigerant flow is reversed, "moving" heat into the house by further chilling the already cold outside air and transferring the heat ga...