It has been recently shown [4] that the lattice effect algebras can be treated as a subvariety of the variety of so-called basic algebras. The open problem whether all subdirectly irreducible distributive lattice effect algebras are just subdirectly irreducible MV-chains and the horizontal sum of two 3-element chains is in the paper transferred into a more tractable one. We prove that modulo distributive lattice effect algebras, the variety generated by MV-algebras and is definable by three simple identities and the problem (...) now is to check if these identities are satisfied by all distributive lattice effect algebras or not. (shrink)

The paper explores the possibilities of using applied qualitative research to help to achieve changes in the context of education. It presents three case studies: an evaluation of an educational software package which may be implemented nationally; an assessment of the impact of a 1:1 Technology Rich Learning Environment experimental project conducted in two Slovak elementary schools; and international comparative research on the curricula of psychology courses in secondary schools. The authors ask three questions: 1. does qualitative research have the (...) potential/resources/capacity to guide us in the process of making policy related decisions? 2. Does it have enough credibility in the eyes of the consumers—whether these are decision-makers themselves or a wider community that often plays a role in public decisions? 3. Could this type of work still count as academic inquiry? The discussion evolves around the reflection of the position of researchers in this type of research design, and the authors conclude that applied qualitative research could be the source of solid evidence for making decisions related to education—although this evidence is different to that provided by quantitative research. (shrink)

Several investigations in probability theory and the theory of expert systems show that it is important to search for some reasonable generalizations of fuzzy logics (e.g. Łukasiewicz, Gödel or product logic) having a non-associative conjunction. In the present paper, we offer a non-associative fuzzy logic L CBA having as an equivalent algebraic semantics lattices with section antitone involutions satisfying the contraposition law, so-called commutative basic algebras. The class (variety) CBA of commutative basic algebras was intensively studied in several recent papers (...) and includes the class of MV-algebras. We show that the logic L CBA is very close to the Łukasiewicz one, both having the same finite models, and can be understood as its non-associative generalization. (shrink)

Adolescents, as active online searchers, have easy access to health information. Much health information they encounter online is of poor quality and even contains potentially harmful health information. The ability to identify the quality of health messages disseminated via online technologies is needed in terms of health attitudes and behaviors. This study aims to understand how different ways of editing health-related messages affect their credibility among adolescents and what impact this may have on the content or format of health information. (...) The sample consisted of 300 secondary school students. To examine the effects of manipulating editorial elements, we used seven short messages about the health-promoting effects of different fruits and vegetables. Participants were then asked to rate the message’s trustworthiness with a single question. We calculated second-order variable sensitivity as the derivative of the trustworthiness of a fake message from the trustworthiness of a true neutral message. We also controlled for participants’ scientific reasoning, cognitive reflection, and media literacy. Adolescents were able to distinguish overtly fake health messages from true health messages. True messages with and without editorial elements were perceived as equally trustworthy, except for news with clickbait headlines, which were less trustworthy than other true messages. The results were also the same when scientific reasoning, analytical reasoning, and media literacy were considered. Adolescents should be well trained to recognize online health messages with editorial elements characteristic of low-quality content. They should also be trained on how to evaluate these messages. (shrink)

The Yugoslav war crimes tribunal convictedthree men for their role in the mass rape ofMuslim women during the conflict inBosnia-Hercegovina. That decision is a landmarkin many respects, but primarily for itsdetermination that the rape of Muslim womenamounted to a crime against humanity. Thiscomment provides an overview of the decision,exploring the significance of recognising rapeas a crime against humanity within the contextof other developments in the area of wartimerape and sexual violence. The comment alsoprovides a brief review of the decision inlight (...) of the author's previous scepticism aboutthe capacity for the Tribunal meaningfully toaddress violence against women. The commentconcludes that while many aspects of thedecision are promising, the war crimes trialitself may offer a limiting arena within whichto address wartime rape. (shrink)