-
Proceedings
K. Rycerz, M. T. Bubak, M. Malawski, and P. M. A. Sloot.
HLA Grid based support for simulation of vascular reconstruction.
In:
Proceedings of the CoreGRID Workshop "Integrated Research in Grid Computing".
pp. 165-174.
-
Proceedings
V. V. Krzhizhanovskaya, P. M. A. Sloot, and Y. E. Gorbachev.
Grid-based Simulation of Industrial Thin Film Production.
In:
SIMULATION: Transactions of The Society for Modeling and Simulation International.
81, pp. 77-85.
-
Article
A. Tirado Ramos, G. Tsouloupas, M. D. Dikaiakos, and P. M. A. Sloot.
Grid Resource Selection by Application Benchmarking: a Computational Haemodynamics Case Study.
Lecture Notes in Computer Science
3514, pp. 534-543.
-
Article
C. Hopman and S. F. Portegies Zwart.
Gravitational waves from remnants of ultraluminous X-ray sources.
Monthly Notices of the Royal Astronomical Society
363, pp. L56-L60.
-
Proceedings
D. Abramson, J. Kommineni, and I. Altintas.
Flexible IO services in the Kepler Grid Workflow System.
In: Proceedings of the 1st E-Science Conference.
-
Article
Antony Antony, Johan Blom, Cees De Laat, and Jason Lee.
Exploring practical limitations of TCP over transatlantic networks.
Future Generation Computer Systems
21(4), pp. 489-499.
-
Proceedings
A. Tirado Ramos, D. J. Groen, and P. M. A. Sloot.
Exploring OGSA Interoperability with LCG-based Production Grids for Biomedical Applications.
In:
Cracow Grid Workshop 2005.
-
Other: misc
S. F. Portegies Zwart.
Explanation for the existance of a planet in a triple star system.
-
Article
M. A. Yurkin, K. Semyanov, P. A. Tarasov, A. V. Chernyshev, A. G. Hoekstra, and V. P. Maltsev.
Experimental and theoretical study of light scattering by individual mature red blood cells with scanning flow cytometry and discrete dipole approximation.
Applied Optics
44, pp. 52449-5256.
-
Proceedings
M. A. Yurkin, K. Semyanov, A. G. Hoekstra, and V. P. Maltsev.
Experimental and Theoretical Study of Light Scattering by Individual Mature Red Blood Cells with Scanning Flow Cytometry and Discrete Dipole Approximation.
In:
Proceedings 8th Conference on Electromagnetic and Light Scattering by Nonspherical Particles: Theory, Measurement and Applications.
pp. 333-336.
-
MSc Thesis
Y.-G. Zhang.
Experimental Validation of the Grid Speedup Theory.
Supervised by
A. G. Hoekstra.
-
Article
J. Gomes, M. David, J. Martins, L. Bernardo, A. Garcia, M. Hardt, H. Kornmayer, R. Marco, D. Rodriguez, I. Diaz, D. Cano, J. Salt, S. Gonzalez, J. Sanchez, F. Fassi, V. Lara, P. Nyczyk, P. Lason, A. Ozieblo, P. Wolniewicz, M. Bluj, K. Nawrocki, A. Padee, W. Wislicki, C. Fernandez, J. Fontan, Y. Cotronis, E. Floros, G. Tsouloupas, W. Xing, M. D. Dikaiakos, J. Astalos, B. Coghlan, E. Heymann, M. Senar, C. Kanellopoulos, A. Tirado Ramos, and D. J. Groen.
Experience with the International Testbed in the CrossGrid Project.
Lecture Notes in Computer Science
3470, pp. 98-110.
-
Article
J. M. Voogd, P. M. A. Sloot, and R. van Dantzig.
Equilibrium spherically curved two-dimensional Lennard-Jones systems.
Journal of Chemical Physics
123(084105), pp. 1-5.
-
Article
O. V. Kaluzhnaya, S. I. Belikov, H. C. Schröder, S. Zapf, A. Borejko, J. A. Kaandorp, A. Krasko, I. M. Müller, and W. E. G. Müller.
Dynamics of skeletal formation in the Lake Baikal sponge Lubomirskia baicalensis. Part I biological and biochemical studies.
Naturwissenschaften
92, pp. 128-133.
-
Article
S. Van Oudenaarde, Z. Hendrikse, F. Dijkstra, L. Gommans, C. De Laat, and R. J. Meijer.
Dynamic paths in multi-domain optical networks for grids.
Future Generation Computer Systems
21(4), pp. 539-548.
-
Proceedings
Z. Zhao, A. S. Z. Belloum, H. H. Yakali, and P. M. A. Sloot.
Dynamic Workflow in a Grid Enabled Problem Solving Environment.
In:
Proceedings of the 5th International Conference on Computer and Information Technology.
pp. 339-345.
-
Article
R. M. H. Merks.
Droogzwemmen in het koraalrif. Computersimulaties verklaren koraalgroei.
Nederlands Tijdschrift voor Natuurkunde
71, pp. 314-317.
-
Article
H. J. G. L. M. Lamers, M. Gieles, and S. F. Portegies Zwart.
Disruption time scales of star clusters in different galaxies.
Astronomy & Astrophysics
429(1), pp. 173-179.
-
Article
D. Lommen, L. Yungelson, E. P. J. van den Heuvel, G. Nelemans, and S. F. Portegies Zwart.
Cygnus X-3 and the problem of the missing Wolf-Rayet X-ray binaries.
Astronomy & Astrophysics
443, pp. 231-241.
-
Article
L. A. Naumov and A. Shalyto.
Classification of Structures Generated by One-Dimensional Binary Cellular Automata from a Point Embryo.
Journal of Computer and Systems Sciences International
44(5), pp. 800-807.
-
Proceedings
M. A. Yurkin and A. G. Hoekstra.
Capabilities of the discrete dipole approximation for simulation light scattering by biological cells.
In:
Proceedings of the NATO Advanced Research Workshop: Optics of Biological Particles.
pp. 19-20.
-
Article
E. V. Zudilova-Seinstra and P. M. A. Sloot.
Bringing Combined Interaction to a Problem Solving Environment for Vascular Reconstruction.
Future Generation Computer Systems
21(7), pp. 1167-1176.
-
Article
T. A. Kvaloy, E. Rongen, A. Tirado Ramos, and P. M. A. Sloot.
Automatic Composition and Selection of Semantic Web Services.
Lecture Notes in Computer Science
3470, pp. 184-192.
-
Proceedings
M. A. Yurkin, D. de Kanter, and A. G. Hoekstra.
Applicability of effective medium approximation to light scattering by granulated biological cells - first results.
In:
Proceedings of the NATO Advanced Research Workshop: Optics of Biological Particles.
ISBN
978-5-98901-002-8.
pp. 46-47.
-
Article
Z. Zhao, D. van Albada, and P. Sloot.
Agent-based flow control for HLA components.
Simulation
81(7), pp. 487-501.
-
Proceedings
Z. Zhao, A. S. Z. Belloum, P. M. A. Sloot, and L. O. Hertzberger.
Agent technology and scientific workflow management in an e-Science environment.
In:
Proceedings of the 17th IEEE International conference on Tools with Artificial Intelligence.
pp. 19-23.
-
Article
Z. Zhao, A. S. Z. Belloum, P. M. A. Sloot, and L. O. Hertzberger.
Agent Technology and Generic Workflow Management in an e-Science Environment.
Lecture Notes in Computer Science
3795, pp. 480-485.
-
Proceedings
L. A. Naumov.
Advantages of Using Generalized Coordinates for Multidimensional Cellular Automata Grids.
In: Proceedings of X All-Russian Guidance Conference "Telematics'2005".
1, pp. 93-95.
-
Book
-
Chapter
M. B. N. Kouwenhoven, A. G. A. Brown, H. Zinnecker, L. Kaper, S. F. Portegies Zwart, and A. Gualandris.
A search for close companions in Sco OB2.
In: Science with Adaptive Optics.
pp. 203-205.
-
Article
M. Rohde, B. D. Kandhai, and H. E. A. Van den Akker.
A generic, mass conservative local grid refinement technique for lattice-Boltzmann schemes.
International Journal for Numerical Methods in Fluids
51, pp. 439-468.
-
Proceedings
E. Jeager, A. Memon, I. Altintas, G. Memon, D. Seber, B. Ludäscher, D. Penington, and W. Michener.
A Scientific Workflow Approach to Distributed Geospatial Data Processing using Web Services.
In: Proceedings of the 17th International Conference on Scientific and Statistical Database Management (SSDBM).
-
MSc Thesis
R. Huo and Q. He.
A Projection and Its Implementation of a Ruby Subset to Program Algebra.
Supervised by I. Bethke and A. Ponse.
-
Article
L. Abrahamyan, J. A. Schaap, A. G. Hoekstra, D. P. Shamonin, F. M. A. Box, R. J. van der Geest, J. H. C. Reiber, and P. M. A. Sloot.
A Problem Solving Environment for Image-Based Computational Hemodynamics.
Lecture Notes in Computer Science
3514, pp. 287-294.
-
Article
M. P. Muno, J. S. Clark, P. A. Crowther, S. M. Dougherty, R. de Grijs, C. Law, S. L. W. McMillan, M. R. Morris, I Negueruelaand, D. Pooley, S. F. Portegies Zwart, and F. Yusef-Zadeh.
A Neutron Star with a Massive Progenitor in the Star Cluster Westerlund 1.
American Astronomical Society Meeting
.
-
Proceedings
P. M. A. Sloot, A. V. Boukhanovsky, W. Keulen, and C. A. B. Boucher.
A Grid-based HIV Expert System.
In:
Proc. 5th International Symposium on Cluster Computing and Grid.
ISBN
9780780390751.
-
Article
P. M. A. Sloot, A. V. Boukhanovsky, W. Keulen, A. Tirado Ramos, and C. A. B. Boucher.
A Grid-Based Hiv Expert System.
Journal of Clinical Monitoring and Computing
19(4-5), pp. 263-278.
-
Chapter
A. Bucur, R. Kootstra, and R. G. Belleman.
A Grid Architecture for Medical Applications.
In: From Grid to Healthgrid: Proceedings of Healthgrid 2005.
pp. 127-137.
-
Article
I. Altintas, A. Birnbaum, K. K. Baldridge, W. Sudholt, M. Miller, C. Amoreira, Y. Potier, and B. Ludäscher.
A Framework for the Design and Reuse of Grid Workflows.
Lecture Notes in Computer Science
3, pp. 119-132.
-
Article
K. Rycerz, M. Bubak, M. Malawski, and P. Sloot.
A Framework for HLA-Based Interactive Simulations on the Grid.
Simulation
81(1), pp. 67-76.
-
Other: misc
J. A. Kaandorp.
'De witte dood': about coral bleaching and simulation models.
-
Proceedings
V. S. Sunderam, G. D. van Albada, P. M. A. Sloot, and J. Dongarra.
In:
Computational Science - ICCS 2005: 5th International Conference, Atlanta, GA, USA, Proceedings, Part III.
ISBN
978-3-540-26044-8.
Lecture Notes in Computer Science
3516.
-
Proceedings
V. S. Sunderam, G. D. van Albada, P. M. A. Sloot, and J. Dongarra.
In:
Computational Science - ICCS 2005: 5th International Conference, Atlanta, GA, USA, Proceedings, Part II.
ISBN
978-3-540-26043-1.
Lecture Notes in Computer Science
3515.
-
Proceedings
V. S. Sunderam, G. D. van Albada, P. M. A. Sloot, and J. Dongarra.
In:
Computational Science - ICCS 2005: 5th International Conference, Atlanta, GA, USA, Proceedings, Part I.
ISBN
978-3-540-26032-5.
Lecture Notes in Computer Science
3514.
-
Proceedings
E. V. Zudilova and T. Adriaansen.
In: Multimodal Interaction for the Visualization and Exploration of Scientific Data, Proc. of the ICMI'05 Workshop.
-
Article
-
Proceedings
Y. E. Gorbachev, M. A. Zatevakhin, A. A. Ignatiev, and V. V. Krzhizhanovskaya.
Virtual Laboratory for Research and Education.
In:
XI International Conference on High Technologies and Quality of Education and Science.
pp. 90-91.
-
Proceedings
Y. E. Gorbachev, V. V. Krzhizhanovskaya, and P. M. A. Sloot.
Using GRID technologies for simulation of complex physical-chemical systems.
In:
Proceedings of the XI All-Russian conference Telematika'2004.
1, pp. 165-167.
-
Proceedings
H. S. M. Cramer, V. Evers, E. V. Zudilova-Seinstra, and P. M. A. Sloot.
Usability Evaluation of a Simulated Vascular Reconstruction System.
In:
Proceedings of the VIRART Virtual Reality Design and Evaluation Workshop 2004.
-
MSc Thesis
H. S. M. Cramer.
Usability Evaluation And Context Analysis To Aid The Development Of Virtual Reality Applications applied to the Virtual Radiology Explorer.
Supervised by V. Evers and E. V. Zudilova.
-
Article
A. G. Hoekstra, J. van 't Hoff, A. M. M. Artoli, and P. M. A. Sloot.
Unsteady flow in a 2D elastic tube with the LBGK method.
Future Generation Computer Systems
20(6), pp. 917-924.
-
Article
B. Leskes and P. M. A. Sloot.
Unlearning Phenomena in Co-evolution of Non-uniform Cellular Automata.
Lecture Notes in Computer Science
3305, pp. 172-181.
-
Article
C. Hopman, S. F. Portegies Zwart, and T. Alexander.
Ultraluminous X-Ray Sources as Intermediate-Mass Black Holes Fed by Tidally Captured Stars.
Astrophysical Journal
604, pp. L101-L104.
-
Proceedings
K. A. Iskra, G. D. van Albada, and P. M. A. Sloot.
Towards Grid-aware Time Warp.
In:
Proceedings of the 18th Workshop on Parallel and Distributed Simulation.
ISBN
9780769521114.
pp. 63-70.
-
Proceedings
M. B. N. Kouwenhoven, A. G. A. Brown, A. Gualandris, L. Kaper, S. F. Portegies Zwart, and H. Zinnecker.
The Primordial Binary Population in OB Associations.
In: Proc. IAU Coll. 191: The Environment and Evolution of Double and Multiple Stars.
21, pp. 139-140.
-
MSc Thesis
H. V. Bui.
The Network as a Data Transporting and Data Storing Application.
Supervised by R. J. Meijer.
-
Article
M. Gieles, E. Athanassoula, and S. F. Portegies Zwart.
The Effect of Spiral Arms on Star Cluster Evolution.
AAS/Division of Dynamical Astronomy Meeting
35(3), p. 02.
-
Article
K. Rycerz, M. T. Bubak, M. Malawski, and P. M. A. Sloot.
Support for Effective and Fault Tolerant Execution of HLA-Based Applications in the OGSA Framework.
Lecture Notes in Computer Science
3038, pp. 848-855.
-
Article
J. M. Fregeau, P. Cheung, S. F. Portegies Zwart, and F. A. Rasio.
Stellar collisions during binary-binary and binary-single star interactions.
Monthly Notices of the Royal Astronomical Society
352, pp. 1-19.
-
Article
S. F. Portegies Zwart, P. Hut, S. L. W. McMillan, and J. Makino.
Star cluster ecology - V. Dissection of an open star cluster: spectroscopy.
Monthly Notices of the Royal Astronomical Society
351, pp. 473-486.
-
Article
B. Chopard and A. G. Hoekstra.
Special issue : Computational Science of Lattice Boltzmann Modelling (Editorial).
Future Generation Computer Systems
20(6), pp. 907-908.
-
Article
K. Semyanov, P. A. Tarasov, A. E. Zharinov, A. V. Chernyshev, A. G. Hoekstra, and V. P. Maltsev.
Single-Particle Sizing from Light Scattering by Spectral Decomposition.
Applied Optics
43(26), pp. 5110-5115.
-
Proceedings
Y. E. Gorbachev, M. A. Zatevakhin, A. A. Ignatiev, and V. V. Krzhizhanovskaya.
Simulation of heat and mass transfer processes in PECVD reactors for silicon films growth under the conditions of intense formation of higher silanes in the gas phase.
In:
The 5th Minsk International Heat and Mass Transfer Forum, MIF-2004, Book of Abstracts.
1, pp. 301-302.
-
Article
G. Nelemans, L. Yungelson, and S. F. Portegies Zwart.
Short-period AM CVn systems as optical, X-ray and gravitational-wave sources.
Monthly Notices of the Royal Astronomical Society
349, pp. 181-192.
-
MSc Thesis
T. A. Kval\oy.
Semantic Web Services Automated Matching, Composition and Selection.
Supervised by
E. Rongen, A. Tirado-Ramos, and P. M. A. Sloot.
-
MSc Thesis
M. Meijer.
Scheduling parallel processes using Genetic Algorithms.
Supervised by G. D. van Albada.
-
Article
M. S. Sipior, S. F. Portegies Zwart, and G. Nelemans.
Recycled pulsars with black hole companions: the high-mass analogues of PSR B2303+46.
Monthly Notices of the Royal Astronomical Society
354, pp. L49-L53.
-
Article
M. B. N. Kouwenhoven, S. F. Portegies Zwart, A. Gualandris, A. Brown, L. Kaper, and H. Zinnecker.
Recovering the Primordial Binary Population using Simulating Observations of Simulations.
Astronomische Nachrichten
325(1), p. 101.
-
Article
-
Article
P. F. Spinnato, G. D. van Albada, and P. M. A. Sloot.
Performance modelling of distributed hybrid architectures.
IEEE Transactions on Parallel and Distributed Systems
15(1), pp. 81-92.
-
Proceedings
B. S. Ó Nualláin and S. de Rooij.
Online Suffix Trees with Counts.
In: Proceedings of the Data Compression Conference 2004.
p. 555.
-
Article
A. Gualandris, S. F. Portegies Zwart, and P. P. Eggleton.
N-body simulations of stars escaping from the Orion nebula.
Monthly Notices of the Royal Astronomical Society
350, pp. 615-626.
-
Article
E. V. Zudilova-Seinstra and P. M. A. Sloot.
Multi-modal Interaction in Biomedicine.
Lecture Notes in Computer Science
3345, pp. 184-201.
-
Chapter
J. A. Kaandorp and R. A. Garcia Leiva.
Morphological analysis of two- and three-dimensional images of branching sponges and corals.
In:
Morphometrics - Applications in Biology and Paleontology.
ISBN
9783540214298.
-
Proceedings
K. Rycerz, B. Balis, R. Szymacha, M. T. Bubak, and P. M. A. Sloot.
Monitoring of HLA Grid Application Federates with OCM-G.
In:
Proceedings of the Eighth IEEE International Symposium on Distributed Simulation and Real-Time Applications.
ISBN
9783540221166.
pp. 125-132.
-
Proceedings
L. A. Naumov and A. A. Shalyto.
Methods of Object-Oriented Agents Implementation, Basing on Finite Automata.
In: Artificial Intelligence. Intellectual and Multiprocessor Systems. Proceedings of International Scientific and Technical Conference.
1, pp. 279-284.
-
Article
L. A. Naumov and A. A. Shalyto.
Methods of Object-Oriented Agents Implementation, Basing on Finite Automata.
Artificial Intelligence
2004, pp. 756-762.
-
MSc Thesis
J. Vidal Rodríguez.
Mesoscopic Stochastic Modelling for Biochemical Networks with Membrane-bound Molecules.
Supervised by
J. A. Kaandorp.
-
Proceedings
J. Cui and J. A. Kaandorp.
Mathematical modelling of calcium homeostasis in yeast cells.
In:
Proceedings of the 12th International Conference on Intelligent Systems for Molecular Biology and 3rd European Conference on Computational Biology (ISMB/ECCB).
-
Article
A. M. M. Artoli, D. Kandhai, H. C. J. Hoefsloot, A. G. Hoekstra, and P. M. A. Sloot.
Lattice BGK simulations of flow in a symmetric bifurcation.
Future Generation Computer Systems
20(6), pp. 909-916.
-
Proceedings
I. Altintas, C. Berkley, E. Jaeger, M. Jones, B. Ludäscher, and S. Mock.
Kepler: Towards a Grid-Enabled System for Scientific Workflows.
In: Proceedings of the Workflow in Grid Systems Workshop in GGF10 - The Tenth Global Grid Forum.
-
Proceedings
I. Altintas, C. Berkley, E. Jaeger, M. Jones, B. Ludäscher, and S. Mock.
Kepler: An Extensible System for Design and Execution of Scientific Workflows.
In: Proceedings of the 16th Intl. Conference on Scientific and Statistical Database Management(SSDBM).
pp. 423-424.
-
Article
S. F. Portegies Zwart, J. D. M. Dewi, and T. J. Maccarone.
Intermediate mass black holes in accreting binaries: formation, evolution and observational appearance.
Monthly Notices of the Royal Astronomical Society
355, pp. 413-423.
-
Article
K. J. Rycerz, M. T. Bubak, M. Malawski, and P. M. A. Sloot.
Interactive Grid Computing: Adapting High Level Architecture-based Applications to the Grid.
TASK Quarterly, Scientific Bulletin of the Academic Centre of Gdansk
8, pp. 549-559.
-
Article
A. Tirado Ramos, A. M. J. Ragas, D. P. Shamonin, H. Rosmanith, and D. Kranzlmueller.
Integration of Blood Flow Visualization on the Grid: the FlowFish/GVK Approach.
Lecture Notes in Computer Science
3165, pp. 77-79.
-
MSc Thesis
M. Ashyraliyev.
Implicit Schemes for the Lattice Boltzmann Equation.
Supervised by
A. G. Hoekstra.
-
Article
B. Chopard and A. G. Hoekstra.
Guest Editorial, Computational science of lattice Boltzmann modelling.
Future Generation Computer Systems
20, pp. 907-908.
-
Article
S. F. Portegies Zwart, H. Baumgardt, P. Hut, J. Makino, and S. L. W. McMillan.
Formation of massive black holes through runaway collisions in dense young star clusters.
Nature
428, pp. 724-726.
-
Article
K. Zajac, M. T. Bubak, M. Malawski, and P. M. A. Sloot.
Execution and Migration Management of HLA-Based Interactive Simulations on the Grid.
Lecture Notes in Computer Science
3019, pp. 872-879.
-
Article
C. P. Salzberg, A. T. Antony, and H. Sayama.
Evolutionary dynamics of cellular automata-based self-replicators in hostile environments.
BioSystems
78(1--3), pp. 119-134.
-
MSc Thesis
D. F. A. Vismans.
Enabling Intelligent Interaction in Virtual Environments -- A Generic Architecture.
Supervised by
J. A. Kaandorp.
-
Article
W. F. C. van Wageningen, B. D. Kandhai, R. F. Mudde, and H. E. A. van den Akker.
Dynamic flow in a Kenics static mixer: An assessment of various CFD methods.
AIChE Journal
50, pp. 1684-1696.
-
MSc Thesis
M. J. Patrick.
Data Comunnication Infrastructure for Distributed Real-Time Simulation.
Supervised by
A. Tirado-Ramos and P. M. A. Sloot.
-
Article
D. Hlushkou, B. D. Kandhai, A. Seidel-Morgenstern, and U. Tallarek.
Coupled lattice-Boltzmann method and finite-difference simulations of electroosmosis in microfluidic channels.
International Journal for Numerical Methods in Fluids
pp. 507-532.
-
Article
D. Merritt, S. Piatek, S. F. Portegies Zwart, and M. Hemsendorf.
Core Formation by a Population of Massive Remnants.
Astrophysical Journal
608, pp. L25-L28.
-
Article
H. S. M. Cramer, V. Evers, E. V. Zudilova-Seinstra, and P. M. A. Sloot.
Context analysis to support development of virtual reality applications.
Virtual Reality
7(3-4), pp. 177-186.
-
Article
B. Chopard and A. G. Hoekstra.
Computational science of lattice Boltzmann modelling (guest editorial).
Future Generation Computer Systems
20, pp. 907-908.
-
Proceedings
M. T. Bubak, G. D. van Albada, P. M. A. Sloot, and J. Dongarra.
Computational Science - ICCS 2004: 4th International Conference, Kraków, Poland, June 6-9, 2004, Proceedings, Part IV.
ISBN
978-3-540-22129-6.
Lecture Notes in Computer Science
3039.
-
Proceedings
M. T. Bubak, G. D. van Albada, P. M. A. Sloot, and J. Dongarra.
Computational Science - ICCS 2004: 4th International Conference, Kraków, Poland, June 6-9, 2004, Proceedings, Part III.
ISBN
978-3-540-22116-6.
Lecture Notes in Computer Science
3038.
-
Proceedings
M. T. Bubak, G. D. van Albada, P. M. A. Sloot, and J. Dongarra.
Computational Science - ICCS 2004: 4th International Conference, Kraków, Poland, June 6-9, 2004, Proceedings, Part II.
ISBN
978-3-540-22115-9.
Lecture Notes in Computer Science
3037.
Publications of the CSL group