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See detailA multiple criteria analysis for-household solid waste management in the urban community of Dakar
Kapepula, K. M.; Colson, Gérard ULg; Sabri, Karim ULg et al

in Waste Management (2007), 27(11), 1690-1705

Household solid waste management is a severe problem in big cities of developing countries. Mismanaged solid waste dumpsites produce bad sanitary, ecological and economic consequences for the whole ... [more ▼]

Household solid waste management is a severe problem in big cities of developing countries. Mismanaged solid waste dumpsites produce bad sanitary, ecological and economic consequences for the whole population, especially for the poorest urban inhabitants. Dealing with this problem, this paper utilizes field data collected in the urban community of Dakar, in view of ranking nine areas of the city with respect to multiple criteria of nuisance. Nine criteria are built and organized in three families that represent three classical viewpoints: the production of wastes, their collection and their treatment. Thanks to the method PROMETHEE and the software ARGOS, we do a pair-wise comparison of the nine areas, which allows their multiple criteria rankings according to each viewpoint and then globally. Finding the worst and best areas in terms of nuisance for a better waste management in the city is our final purpose.. fitting as well as possible the needs of the urban community. Based on field knowledge and on the literature, we suggest applying general and area-specific remedies to the household solid waste problems. (C) 2006 Elsevier Ltd. All rights reserved. [less ▲]

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See detailMultiple criteria and multiple periods performance analysis: the comparison of telecommunications sectors in the Maghreb countries
Mbangala, Mapapa ULg; Colson, Gérard ULg; Sabri, Karim ULg

in Journal of Telecommunications and Information Technology (2006)

In four Maghreb countries (Algeria, Morocco, Mauritania and Tunisia), a considerable improvement of the situation of the telecommunication operators has been noticed during the nineties. The evolution in ... [more ▼]

In four Maghreb countries (Algeria, Morocco, Mauritania and Tunisia), a considerable improvement of the situation of the telecommunication operators has been noticed during the nineties. The evolution in these countries was very different depending on their economic policies, their effort of reorganization of their telecommunication sector and their technological change. Theses differences will be exhibited and analysed by comparing the operators’ performances over a decade (1992–2001). A first approach is based on the Malmquist DEA TFP index for measuring the total factors productivity change, decomposed into technical efficiency change and technological changes. Second, using the Promethee II method and the software ARGOS, a multiple criteria analysis is performed, taking into account a larger scope of analysis. A main issue is that the general performance ranking of sets of operators by country is almost the same according to the two methods, although the variables of inputs and output used for the index of Malmquist are different and narrower in the considered scope than the chosen families of criteria used in method Promethee and software ARGOS. Both methods of analysis provide however complementary useful detailed information, especially in discriminating the technological and management progresses for Malmquist and the two dimensions of performance for Promethee: that are the service to the community and the enterprises performances, often in conflict. [less ▲]

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See detailMCDA applied to the architectural sketch design: an aid to conception of the building envelope
Colson, Gérard ULg; Hauglustaine, Jean-Marie ULg

in Colorni, A.; Paruccini, M.; Roy, B. (Eds.) A-MCD-A - Aide Multicritère à la Décision - Multiple Criteria Decision Aiding (2001)

In the conception of the building envelope, the sketch design is a crucial moment of the architectural design. The first drawing gives a concrete expression to the project author's first choices regarding ... [more ▼]

In the conception of the building envelope, the sketch design is a crucial moment of the architectural design. The first drawing gives a concrete expression to the project author's first choices regarding a set of requirements and preferences, as expressed by the multiple stakeholders of the project, namely: the building owner, users, public authorities and the design team surrounding the architect. The present study explores a Multiple Criteria Decision Aid procedure (MCDA), an aid to help stakeholders improve this stage of the sketch design. The methodology is built close to the usual design process. This paper presents design and decision aid intertwined procedures and briefly describes the softwares involved: AMCE and EsQUIsE. The decision aid process is a first attempt to address this architectural sketch design challenge. The reader is expected to react to the suggested presentation of this still open MCDA problem. [less ▲]

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See detailMCDA applied to the architectural sketch design: an aid to conception of the building envelope
Colson, Gérard ULg; Hauglustaine, Jean-Marie ULg

in Papiers de recherche / Working papers - Faculté d'Economie, de Gestion et de Sciences sociales (2000), (G.E.M.M.E n°0008), 13

In the conception of the building envelope, the sketch design is a crucial moment of the architectural design. The first drawing gives a concrete expression to the project author's first choices regarding ... [more ▼]

In the conception of the building envelope, the sketch design is a crucial moment of the architectural design. The first drawing gives a concrete expression to the project author's first choices regarding a set of requirements and preferences, as expressed by the multiple stakholders of the project, namely: the building owner, users, public authorities and the design team surrounding the architect. The present study explores a Multiple Criteria Decision Aid procedure (MCDA), an aid to help stakeholders improve this stage of the sketch design. The methodology is built close to the usual design process. This paper presents design and decision aid intertwined procedures and briefly describes the softwares involed: AMCE and EsQUIsE. The decision aid process is a first attempt to address the architectural sketch design challenge. The reader is expected to react to the suggested presentation of this still open MCDA problem. [less ▲]

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See detailAn Open Problem of MCDA: Aid to the Conception of the Building Envelope
Colson, Gérard ULg; Hauglustaine, Jean-Marie ULg

Conference (1999, March)

In the conception of the envelope of a building, the sketch design is a crucial moment of the design. The first drawing gives a concrete expression to the first choices of the project author, in respect ... [more ▼]

In the conception of the envelope of a building, the sketch design is a crucial moment of the design. The first drawing gives a concrete expression to the first choices of the project author, in respect of a set of requirements and of general preferences, expressed by the multiple stakeholders of the project, namely: the building owner, the users, the administrative authorities and the design team surrounding the architect. In order to help the stakeholders in improving this stage of the sketch design, the present study explores a multicriteria decision aiding procedure. This MultiCriteria Decision Aid (MCDA) methodology should be close to the usual design process. This paper presents the design aid procedures, in parallel. At this time of the study, the decision aid process is a first attempt to cope with this architectural design challenge. The floor is expected to react to the suggested presentation of this MCDA open problem. [less ▲]

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See detailÉVALUATION MULTICRITÈRE D’ENTREPRISES PUBLIQUES DU RAIL
Mbangala, Mapapa ULg; Colson, Gérard ULg

in Finéco (1998), 8

Les performances de dix entreprises publiques africaines du rail sont comparées entre elles au moyen des méthodes multicritères ELECTRE I, PROMETHEE II et JUDGES. Les 25 critères de premier niveau retenus ... [more ▼]

Les performances de dix entreprises publiques africaines du rail sont comparées entre elles au moyen des méthodes multicritères ELECTRE I, PROMETHEE II et JUDGES. Les 25 critères de premier niveau retenus sont regroupés d’abord en 8 familles capturant chacune un objectif de deuxième niveau. L’efficacité du service est mesurée par une fonction d’évaluation technicoéconomique regroupant les 4 premières familles. Son efficience est mesurée par une fonction d’évaluation où interviennent les 4 autres familles constituées de ratios financiers classiques susceptibles de capter l’équilibre de gestion et l’origine des ressources financières. Les auteurs effectuent des analyses longitudinales et transversales des données en comparant les résultats obtenus par ELECTRE et PROMETHEE. Le logiciel JUDGES fait apparaître successivement l’arbre des corrélations observées entre les 8 familles de critères, et les distributions de rangs des entreprises selon 8 familles. D’un point de vue méthodologique, ce travail propose une variante d’ELECTRE I et vérifie la pertinence des méthodes multicritères en matière de classement de performance des entreprises publiques. [less ▲]

Detailed reference viewed: 24 (2 ULg)