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- Jarle Berntsen, Terje O. Espelid, Alan Genz
- ACM Trans. Math. Softw.
- 1991

An adaptive algorithm for numerical integration over hyperrectangular regions is described. The algorithm uses a globally adaptive subdivision strategy. Several precautions are introduced in theâ€¦ (More)

- Jarle Berntsen, Terje O. Espelid, Alan Genz
- ACM Trans. Math. Softw.
- 1991

J. Berntsen was supported by the Norwegian Research Council for Humanities and Sciences and STATOIL. T. O. Espelid was supported by the Norwegian Research Council for Humanities and Sciences. A Genzâ€¦ (More)

- Jarle Berntsen, Terje O. Espelid
- ACM Trans. Math. Softw.
- 1991

A new algorithm for estimating the error in quadrature approximations is presented. Based on the same integrand evaluations that we need for approximating the integral, one may, for many quadratureâ€¦ (More)

- Jarle Berntsen, Terje O. Espelid
- ACM Trans. Math. Softw.
- 1992

An adaptive algorithm for computing an approximation to the integral of each element in a vector function f(x,y) over a two-dimensional region made up of triangles is presented. A FORTRANâ€¦ (More)

- Jarle Berntsen
- Parallel Computing
- 1989

- Jarle Berntsen, Ronald Cools, Terje O. Espelid
- ACM Trans. Math. Softw.
- 1993

An adaptive algorithm for computing an approximation to the integral of each element in a vector of functions over a 3-dimensional region covered by simplices is presented. The algorithm is encodedâ€¦ (More)

- Jarle Berntsen, Dag L Aksnes, Arne Kjell Foldvik
- Hydrobiologia
- 2004

A coupled physicalâ€“chemicalâ€“biological ocean model was applied to study primary production in an idealized 60-km long and 4-km wide fjord. Three different scenarios were simulated: (a) Without freshâ€¦ (More)

- Jarle Berntsen, Terje O. Espelid
- Parallel Computing
- 1988

We have developed a one-dimensional parallel global adaptive quadrature algorithm for a machine with hypercube architecture, and studied the heuristics present in the algorithm. A mathematical modelâ€¦ (More)

- Jiuxing Xing, Alan M. Davies, Jarle Berntsen
- Mathematics and Computers in Simulation
- 2009

A non-hydrostatic ocean circulation model is used to determine the distribution of the horizontal energy flux terms due to internal waves in sill regions. Calculations show that although the linearâ€¦ (More)

- Janek Laanearu, Alan M. Cuthbertson, +4 authors Jarle Berntsen
- 2016

Preliminary analysis of a series of large-scale experiments investigating bi-directional stratified flows across a submerged trapezoidal sill obstruction is presented. A range of parametric forcingâ€¦ (More)