This map shows the geographic impact of Piet Hemker's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Piet Hemker with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Piet Hemker more than expected).
This network shows the impact of papers produced by Piet Hemker. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Piet Hemker. The network helps show where Piet Hemker may publish in the future.
Co-authorship network of co-authors of Piet Hemker
This figure shows the co-authorship network connecting the top 25 collaborators of Piet Hemker.
A scholar is included among the top collaborators of Piet Hemker based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with Piet Hemker. Piet Hemker is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
20 of 20 papers shown
1.
Hemker, Piet, et al.. (2004). Parameter-robust domain decomposition methods for semilinear singularly perturbed parabolic reaction-diffusion equations in a composed domain. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands.
2.
Hemker, Piet, et al.. (2002). Fourier two-level analysis for higher dimensional discontinuous Galerkin discretisation. UvA-DARE (University of Amsterdam). 1–24.1 indexed citations
3.
Hemker, Piet, et al.. (2001). High-order time-accurate schemes for parabolic singular perturbation problems with convection. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–19.5 indexed citations
4.
Hemker, Piet, et al.. (1999). On the representation of functions and finite difference operators on adaptive sparse grids. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–19.
5.
Hemker, Piet, et al.. (1997). Mathematical modelling in blood coagulation ; Simulation and parameter estimation. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–11.9 indexed citations
6.
Farrell, Paul A., Piet Hemker, & G. I. Shishkin. (1996). Discrete Approximations for Singularly Perturbed Boundary Value Problems with Parabolic Layers, III. Journal of Computational Mathematics. 14(3). 273–290.9 indexed citations
7.
Pflaum, Christoph & Piet Hemker. (1996). APPROXIMATION ON PARTIALLY ORDERED SETS OF REGULAR GRIDS. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–31.2 indexed citations
8.
Hemker, Piet, et al.. (1995). Manual of spIds, A software package for parameter identification in dynamical systems. UvA-DARE (University of Amsterdam).1 indexed citations
9.
Hemker, Piet, et al.. (1995). Manual of spIds, a software package for parameter identification in dynamic systems. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–56.1 indexed citations
10.
Hemker, Piet. (1994). Remarks on sparse-grid finite-volume multigrid. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–33.2 indexed citations
11.
Hemker, Piet & G. I. Shishkin. (1993). Approximation of parabolic PDEs with a discontinuous initial condition. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands.7 indexed citations
12.
Hemker, Piet, et al.. (1993). BASIS3, a data structure for $3$-dimensional sparse grids. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 57(21). 1–39.4 indexed citations
Hemker, Piet, et al.. (1990). EULER: an adaptive Euler code. 1–33.1 indexed citations
15.
Molenaar, J. & Piet Hemker. (1990). A multigrid approach for the solution of the 2D semiconductor equations. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands.1 indexed citations
16.
Hemker, Piet, et al.. (1983). A portable vector-code for autonomous multigrid modules. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–15.5 indexed citations
17.
Miller, John J. H. & Piet Hemker. (1979). Numerical analysis of singular perturbation problems : [proceedings of the conference held at the University of Nijmegen, the Netherlans, May 30th to June 2nd, 1978]. Academic Press eBooks.9 indexed citations
18.
Hemker, Piet. (1974). Nonlinear parameter estimation in initial value problems. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–49.18 indexed citations
19.
Hemker, Piet. (1974). A method of weighted one-sided differences for stiff boundary value problems with turning points. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–15.3 indexed citations
20.
Hemker, Piet. (1972). Parameter estimation in non-linear differential equations. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–91.13 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
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incomplete records, variations in author disambiguation, differences in journal indexing, and
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Rankless may not fully capture the entirety of a scholar's output or impact.