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MUSIR - A Retrieval Model for Music
(Tampereen yliopisto, 1998)
Traditionally, information retrieval in music has been based on surrogates of music, i.e., bibliographic descriptions of music documents. This does not provide access to the essence of music, whether it is defined as the ...
Informetrics through Advanced Data Management. Complex Object Restructuring, Data Aggregation and Transitive Computation
This article considers how informetric calculations can easily and declaratively be specified through advanced data management techniques. In particular, bibliographic data and its modeling as complex objects (non-first ...
On Low Order Embedded Pairs of Implicit Runge-Kutta Formulas
(Tampere University of Technology, 1996)
Implicit Runge-Kutta methods are used for solving stiff ODEs such as those arising in mechanical or electrical system simulation and in semidiscretisation of partial differential equation evolution problems. Embedding one ...
On the parametric instability caused by step size variation in Runge-Kutta-Nyström methods
(Tampere University of Technology, 1998)
The parametric instability arising when ordinary differential equations (ODEs) are numerically integrated with Runge-Kutta-Nyström (RKN) methods with varying step sizes is investigated. It is shown that when linear constant ...