D. De Werra

NETWORK SIMPLEX METHOD APPLIED TO AC LOAD-FLOW CALCULATION. (2007)

Barras, J., Alec, S., Pasche, C., Chamorel, P.-A., Germond, A. J., De Werra, D.

The authors specify a network simplex method of the load-flow calculation in a power system. The proposed model is an imaginary and real current one. It is based on a simplifying assumption which...

Network simplex method applied to AC load-flow calculation (2007)

Barras, J., Alec, S., Pasche, C., Chamorel, P., Germond, A. J., De Werra, D.

The authors specify a network simplex method of the load-flow calculation in a power system. The proposed model is an imaginary and real current one. It is based on a simplifying assumption which...

On the approximation of Min Split-coloring and Min Cocoloring (2006)

Demange, M., Ekim, T., De Werra, D.

Résolution de problèmes d'horaires par la théorie des graphes (2006)

De Werra, D.

On some combinatorial problems arising in scheduling (2006)

De Werra, D.

Construction of school timetables by flow methods (2006)

De Werra, D.

Investigations on an edge coloring problem (2006)

De Werra, D.

Balanced schedules (2006)

De Werra, D.

Equitable colorations of graphs (2006)

De Werra, D.

A property of minimum concave cost flows in capacitated networks (2006)

Florian, M., Rossin-Arthiat, M., De Werra, D.

Decomposition of bipartite multigraphs into matchings (2006)

De Werra, D.

Partitions of graphs into coverings and hypergraphs into transversals (2006)

De Werra, D.

Some results in chromatic scheduling (2006)

De Werra, D.

A note on graph coloring (2006)

De Werra, D.

How to color a graph (2006)

De Werra, D., Roy, B.

A few remarks on chromatic scheduling (2006)

De Werra, D., Roy, B.

On good and equitable colorings (2006)

De Werra, D.

On a particular conference scheduling problem (2006)

De Werra, D.

Everything you always wanted to know about S. Ex (2006)

De Werra, D.

Un modèle pour l'utilisation dans l'agriculture des boues produites par les stations d'épuration (2006)

Beck, P., Rochat, J. C., De Werra, D.

An extension of bipartite multigraphs (2006)

De Werra, D.

A note on a paper by D. Seinsche (2006)

Arditti, J. C., De Werra, D.

Some remarks on good colorations (2006)

De Werra, D.

On a multi-period assignment problem (2006)

De Werra, D., Roubens, M.

Modélisation mathématique du recyclage des boues d'épuration comme engrais pour l'agriculture (2006)

Rochat, J. C., De Werra, D.

Progressive balancing in chromatic scheduling (2006)

De Werra, D., Boffey, T. A.

Uniqueness of colorings (2006)

De Werra, D.

Compactness and balancing in scheduling, (2006)

Brélaz, D., Nicolier, V., De Werra, D.

Some coloring techniques (2006)

De Werra, D.

Multigraphs with quasi-weak odd cycles, (2006)

De Werra, D.

Color-feasible sequences in almost bipartite graphs (2006)

De Werra, D., Bermond, Fournier, Las Vergnas, Sotteau

Some comments on a note about timetabling, (2006)

De Werra, D.

On line perfect graphs, (2006)

De Werra, D.

Color-feasible sequences of multigraphs, (2006)

De Werra, D.

On a class of hypergraphs occurring in chromatic scheduling, (2006)

De Werra, D.

On the use of alternating chains and hypergraphs in edge colorings, (2006)

De Werra, D.

Partial compactness in chromatic scheduling, (2006)

De Werra, D.

Regular and canonical colorings, (2006)

De Werra, D.

Optimisation in edge-chromatic scheduling (2006)

De Werra, D., Prekopa, A.

Network flows and chromatic scheduling (2006)

De Werra, D., Krarup, J., Walukiewicz, S.

Fantaisies chromatiques sur diverses partitions (2006)

De Werra, D., Hansen, P., De Werra, D.

Some partitioning problems for graphs and hypergraphs (2006)

De Werra, D.

A tutorial on heuristic methods (2006)

Silver, E. A., Vidal, R. V. V., De Werra, D.

Geography, games and graphs (2006)

De Werra, D.

Scheduling in Sports (2006)

De Werra, D., Hansen, P.

On some characterisations of totally unimodular matrices (2006)

De Werra, D.

On the existence of generalized good and equitable colorings (2006)

De Werra, D.

Remarks on the requirement matrix of school timetable problems (2006)

De Werra, D.

Obstructions for regular colorings (2006)

De Werra, D.

Minimising irregularities in sports schedules using graph theory (2006)

De Werra, D.

Some experiments with a timetabling system (2006)

Ostermann, R., De Werra, D.

Chromatic optimisation : limitations, objectives, uses, references (2006)

Krarup, J., De Werra, D.

On the fuzzy faces of the COP domain (2006)

De Werra, D., Henn, R.

On the use of bichromatic interchanges (2006)

De Werra, D.

Some min-max formulations for partitioning problems in graphs and hypergraphs, Proceedings (Springer Verlag) (2006)

De Werra, D.

On some properties of the struction of a graph (2006)

De Werra, D.

Preemptive scheduling, linear programming and network flows (2006)

De Werra, D.

Pseudo-Boolean functions and stability of graphs (2006)

Ebenegger, C., Hammer, P. L., De Werra, D.

Balanced optimisation problems (2006)

Martello, S., Pulleyblank, W., Toth, P., De Werra, D.

Variation on a theorem of König (2006)

De Werra, D.

A decomposition property of polyhedra (2006)

De Werra, D.

Graphs, hypergraphs and timetabling (2006)

De Werra, D.

Graphs, networks and applications (2006)

De Werra, D., Rand, G. K., Eglese, R. W.

Stability in CAN-free graphs (2006)

Hammer, P. L., Mahadev, N. V. R., De Werra, D.

Threshold characterization of graphs with Dilworth number two (2006)

Benzaken, C., Hammer, P. L., De Werra, D.

Graphs, hypergraphs and timetabling (2006)

De Werra, D.

On the multiplication of divisions (2006)

De Werra, D.

The struction of a graph : application to CN-free graphs, N.V. R. Mahadev (2006)

Hammer, P. L., De Werra, D.

A note on strong perfectness of graphs (2006)

Preissmann, M., De Werra, D.

On split graphs of Dilworth number 2 (2006)

Benzaken, C., Hammer, P. L., De Werra, D.

Some uses of hypergraphs in timetabling, (2006)

De Werra, D.

An introduction to timetabling (2006)

De Werra, D.

Variations on the integral decomposition property (2006)

De Werra, D.

Timetabling problems : should they be canonical ? (2006)

De Werra, D., Pasche, C., Petter, A.

A note on superbrittle graphs (2006)

Mahadev, N. V. R., Preissmann, M., De Werra, D.

Node covering with odd chains (2006)

De Werra, D.

Generalized neighbourhoods and a class of perfectly orderable graphs (2006)

Cochand, M., De Werra, D.

Network simplex method applied to AC load-flow calculation (2006)

Barras, J., Alec, S., Pasche, C., Chamorel, P. A., Germond, A. J., De Werra, D.

Four classes of perfectly orderable graphs (2006)

Chvatal, V., Hoàng, C. T., Mahadev, N. V. R., De Werra, D.

Partitions into odd chains (2006)

De Werra, D.

Some experiments with simulated annealing (2006)

Chams, M., Hertz, A., De Werra, D.

Using tabu search techniques for graph coloring (2006)

Hertz, A., De Werra, D.

Design and operation of flexible manufacturing systems: the kingdom of heuristics (2006)

De Werra, D.

On randomized stopping points and perfect graphs (2006)

Dalang, R., Trotter, L. E., De Werra, D.

Some models of graphs for scheduling sports competitions (2006)

De Werra, D.

Consecutive colorings of graphs (2006)

De Werra, D., Hertz, A.

Perfectly orderable graphs are quasi-parity graphs (2006)

Hertz, A., De Werra, D.

On the two-phase method for preemptive scheduling (2006)

De Werra, D.

From linear separability to unimodality : a hierarchy of pseudo-Boolean functions (2006)

Hammer, P. L., B., Simeone, Liebling, T., De Werra, D.

Heuristics for graph coloring (2006)

De Werra, D., Tinhofer, G., Mayoraz, E., Noltemeir, H., Syslo, M.

Graph-theoretical models for preemptive scheduling (2006)

De Werra, D., Slowinski, R., Weglarz, J.

Apprentissage dans les réseaux de Hopfield (2006)

Amaldi, E., Mayoraz, E., Hertz, A., De Werra, D.

Packing independent sets and transversals (2006)

De Werra, D.

STABULUS: a technique for finding stable sets in large graphs with tabu search (2006)

Friden, C., Hertz, A., De Werra, D.

Paths, chains and antipaths (2006)

De Werra, D., Pasche, C.

Generalized edge packings (2006)

De Werra, D.

Odd path packings (2006)

Pulleyblank, W., De Werra, D.

Tabu search: a tutorial and an application to neural networks (2006)

De Werra, D., Hertz, A.

Connected sequential colorings (2006)

Hertz, A., De Werra, D.

An interactive system for constructing timetables on a PC (2006)

Chabal, N., De Werra, D.

Preemptive scheduling with staircase and piecewise linear resource availability (2006)

Cochand, M., De Werra, D., Slowinski, R.

A constrained sports scheduling problem (2006)

De Werra, D., Jacot-Decombes, L., Masson, P.

A note on SS/TDMA, satellite communication, (2006)

De Werra, D.

Scheduling independent two-processor tasks on a uniform duo-processor system (2006)

Blazewicz, J., Drozdowski, M., Schmidt, G., De Werra, D.

TABARIS: an exact algorithm based on Tabu search for finding a maximum independent set in a graph (2006)

Friden, C., Hertz, A., De Werra, D.

The Tabu search metaheuristic: how we used it (2006)

Hertz, A., De Werra, D.

Recognition of a class of unimodular functions (2006)

Cochand, M., Simeone, B., De Werra, D.

Almost nonpreemptive schedules, (2006)

De Werra, D.

Loading problems with tool management in flexible manufacturing systems: a few integer programming models (2006)

De Werra, D., Widmer, M.

Graph coloring models for scheduling in automated production systems (2006)

De Werra, D., Solot, P., Wu, C. P.

A convoy scheduling problem (2006)

Bovet, J., Constantin, C., De Werra, D.

On the use of augmenting chains in chain packings (2006)

De Werra, D., Roberts, F. S.

A preemptive open shop scheduling problem with one resource (2006)

De Werra, D., Blazewicz, J., Kubiak, W.

Idendifying mythological scenes with artificial intelligence (2006)

Oberlin, A., Rogger, A., De Werra, D., Bron-Pury, C., Viret-Bernal, F., Bérard, C.

Compact cylindrical chromatic scheduling (2006)

De Werra, D., Solot, P.

Cylindrical open shop scheduling: some solvable cases (2006)

Mahadev, N. V. R., Solot, P., De Werra, D.

Some preemptive open shop scheduling problems with a renewable or a nonrenewable resource (2006)

De Werra, D., Blazewicz, J.

Basic ideas of Tabu search with an application to traveling salesman and quadratic assignment (2006)

Fiechter, C. N., Rogger, A., De Werra, D.

The burrow system of the fossorial form of the water vole (arvicola Terrestris L.) (2006)

Airoldi, J. P., De Werra, D.

Edge-chromatic scheduling with simultaneity constraints (2006)

De Werra, D., Mahadev, N. V. R., Peled, U. N.

Some graph-theoretical models for scheduling in automated production systems (2006)

De Werra, D., Solot, P.

Addendum: some preemptive open shop scheduling problems with a renewable or a non renewable resource (2006)

De Werra, D., Blazewicz, J.