A time series is a sequence of data assigned to specifi c moments in time. Most statistical models are static, such as regression analysis: The defi ning set of parameters has fixed values, and the relationship between ...

The paper proposes a new method, called the Fast Quadratic Transform (FQT), to solve the general indefinite two-variable quadratic equation in integers. The paper presents the new approach, discusses its properties, and ...

Det har lenge vært klart at dødelighet oppfører seg på en stokastisk måte, og at livselskap som følge av forpliktelser som ofte varer i 30 år er sterkt utsatt for risiko som følge av nedgående dødelighet. For å sikre seg ...

Topological André-Quillen homology for commutative S-algebras was introduced by Basterra following work of Kriz, and has been intensively studied by several authors. In this paper we discuss it as a homology theory on CW ...

We consider non-strictly hyperbolic systems of conservation laws in triangular form, which arise in applications like three-phase flows in porous media. We device simple and efficient finite volume schemes of Godunov type ...

Cluster analysis is a field of study where the aim is to discover distinct groups or clusters in a data set. The objects in the same groups should be similar to each other in some respect, while at the same time dissimilar ...

Recent work [4] has shown that the Degasperis-Procesi equation is well-posed in the class of (discontinuous) entropy solutions. In the present paper we construct numerical schemes and prove that they converge to entropy ...

This thesis describes briefly the main components of a deep water WOR and presents results of the structural and fatigue analyses on some of the most critical regions of the riser under normal conditions. The thesis considers ...