Where We Were… Where We Are… Where We Are Going…

Leadership Studies is a new interdisciplinary field of Organization Studies that is growing at a steady rate all over the world. Leadership studies are seen as a branch of Management and Organization Sciences despite its philosophical roots that can be traced back to Plato’s philosophical writings such as Laws, Politics, or The Republic. Starting from Burns’ seminal book, Leadership (1978), and...

At present a handful of comparisons have been made of different variants of worked examples and tutored problem solving. There is some evidence to report a benefit of adding worked examples (WE) to current tutored problem solving (TPS) environments. Our research investigated how a “pure” WE condition could compete with a TPS condition. By pure we mean the WE condition does not include tutoring,...

Outer joins are extended relational algebra operations intended to deal with unknown information represented with null values. This work shows an approach to embed both null values and outer join operations in the deductive database system DES (Datalog Educational System), which uses Datalog as a query language. This system also supports SQL, where views and queries are compiled to Datalog prog...