This paper sheds light on Maritime Education and Competence Development which has been investigated in various studies, both within and outside Europe. However, the topic is under-researched and stil l in need of attention, in order to ensure that competences are aligned with technological advancements and the needs that exist in a contemporary maritime industry. It is furthermore paramount tha...

Maritime transportation systems are essential for world trade; it is crucial to understand how these systems may fail, to be able to maintain their capacity. In this paper, the maritime transportation system is seen as a throughput mechanism; a technical system which serves its purpose by moving goods for its dependents. Understanding which key functions and capabilities are prerequisite for th...

It is well known that a countable group admits a left-invariant total order if and only if it acts faithfully on R by orientation preserving homeomorphisms. Such group actions are special cases of group actions on simply connected 1-manifolds, or equivalently, actions on oriented order trees. We characterize a class of left-invariant partial orders on groups which yield such actions, and show c...

pragmatic assessment and consistency in rating are among the subject matters which are still in need of more profound investigations. the importance of the issue is highlighted when remembering that inconsistency in ratings would surely damage the test fairness issue in assessment and lead to much diversity in ratings. our principal concern in this study was observing the criteria that american...

This paper presents a novel approach for pattern extraction and anomaly detection in maritime vessel traffic, based on the theory of potential fields. Potential fields are used to represent and model normal, i.e. correct, behaviour in maritime transportation, observed in historical vessel tracks. The recorded paths of each maritime vessel generate potentials based on metrics such as geographica...

This paper discusses the application of classical machine learning approaches to the task of Dialogue Act Recognition for text-based Sinhala. A study was carried out to identify a dialogue act tag set for Sinhala. A new corpus using Sinhala subtitles for English movies was created and was annotated with the selected dialogue acts. Evaluation of the dialogue act recognition system was performed ...

Let A/Q be a modular abelian variety. We establish criteria to prevent a given quaternion algebra over a totally real number field to be the endomorphism algebra of A over Q̄. We accomplish this by analyzing the representation of Gal (Q̄/Q) on the points of N-torsion of A at primes N which ramify in B and by applying descent techniques to certain covers of Shimura varieties. Our result also appli...

Let 911 be the mapping class group of a surface of genus g > 3, and 9 the subgroup of those classes acting trivially on homology. An infinite set of generators for 9, involving three conjugacy classes, was obtained by Powell. In this paper we improve Powell's result to show that 9 is generated by a single conjugacy class and that [911, 9] = 5. I. Let M = M , be an orientable surface of genus g ...