Typical traditional software development models are initially designed for company-style software project teams. They also assume a typical software project that has somewhat clear goals, scope, budget, and plan. Even Agile development models that are very flexible in considering previous project parameters assume somewhat stable team and project structures. However, in recent years, the author...

The influence of problem-based learning (PBL) and open-book tests on long-term knowledge retention is unclear and subject of discussion. Hypotheses were that PBL as well as open-book tests positively affect long-term knowledge retention. Four progress test results of fifth and sixth-year medical students (n = 1,648) of three medical schools were analyzed. Two schools had PBL driven curricula, a...

In this paper, we report on our experiences with novel learning strategies for HCI and Information Visualisation, in the context of a computer science master curriculum. What sets our experiences somewhat apart is the focus on openness. This includes the use of Open Educational Resources (OER), as well as open communication between the students, the professor and the general public, through web...

An inherently parallel algorithm is proposed that efficiently performs selection: finding the K-th largest member of a set of N members. Selection is a common component of many more complex algorithms and therefore is a widely studied problem. Not much is new in the proposed dualheap selection algorithm: the heap data structure is from J.W.J. Williams [1], the bottom-up heap construction is fro...

We consider secret computation of purchase history data among two companies of different type of business in order to identify purchase patterns without revealing customer information of each company. Among several privacy-preserving approaches, we focus on homomorphic encryption, which is public-key encryption supporting meaningful computations on encrypted data. In particular, we apply the so...

Most studies of implicatures focused on conversational implicatures. This study, however, examined the conventional implicature induced by but. According to the literature, one can assume that the second argument in a ‘p but q’ construction is the argument with the most weight. This is, however, never experimentally tested with a direct distancingcontrastive but. We presented participants with ...

Surprisingly, most of existing provably secure FHE or SWHE schemes are lattice-based constructions. It is legitimate to question whether there is a mysterious link between homomorphic encryptions and lattices. This paper can be seen as a rst (partial) negative answer to this question. We propose a very simple private-key (partially) homomorphic encryption scheme whose security relies on factori...