• Future time perspective and small business growth in developing regions

      Vermeire, Jacob; Meuleman, Miguel; Lens, W. (2014)
    • Future-proof tariff design: Recovering sunk grid costs in a world where consumers are pushing back

      Schittekatte, Tim; Momber, Ilan; Meeus, Leonardo (2017)
      Traditional analysis of distribution grid user’s reaction to tariffs assumes a low price sensitivity and a lack of alternative technologies to grid connection. This is radically changing with two technology breakthroughs: (1) Photovoltaics (PV) enable domestic and commercial consumers to self-produce energy; (2) Batteries allow self-producers to set both their grid energy and capacity parameters. Contributing to the state of the art, the grid cost recovery problem is modelled as a non-cooperative game between consumers. In this game, the availability and costs of new technologies (such as PV and batteries) strategically interact with tariff structures. Four states of the world for user’s access to new technologies are distinguished and three tariff structures are evaluated. The assessed distribution network tariff structures are: energy volumetric charges with net-metering, energy volumetric charges for both injection and withdrawal, and capacity-based charges. Results show that the new distribution world -open by new technology choices for grid users- is highly interactive and threatens grid regulation not understanding it.
    • Future-proof tariff design: Recovering sunk grid costs in a world where consumers are pushing back

      Schittekatte, Tim; Momber, Ilan; Meeus, Leonardo (Energy Economics, 2018)
      Traditional analysis of distribution network tariff design assumes a lack of alternatives to grid connection for the fulfilment of consumers' electricity needs. This is radically changing with breakthroughs in two technologies: (1) Photovoltaics (PV) enable domestic and commercial consumers to self-produce energy; (2) Batteries allow consumers and self-producers to gain control over their grid energy and capacity parameters. Contributing to the state of the art, the grid cost recovery problem for the Distribution System Operator (DSO) is modelled as a non-cooperative game between consumers. In this game, the availability and costs of the two named technologies strategically interact with tariff structures. Four states of the world for user's access to technologies are distinguished and three tariff structures are evaluated. The assessed distribution network tariff structures are: energy volumetric charges with net-metering, energy volumetric charges for both injection and withdrawal, and capacity-based charges. Results show that in a state of the world with new technology choices for grid users both efficiency and equity issues can arise when distribution network charges are ill-designed.
    • Gaining insight in domestic violence with Emergent Self Organizing Maps

      Poelmans, Jonas; Elzinga, Paul; Viaene, Stijn; Van Hulle, Marc; Dedene, Guido (+) (Expert Systems with Applications, 2009)
      Topographic maps are an appealing exploratory instrument for discovering new knowledge from databases. During the past years, new types of Self Organizing Maps (SOM) were introduced in the literature, including the recent Emergent SOM. The ESOM tool is used here to analyze a large set of police reports describing a wide range of violent incidents that occurred during the year 2007 in the Amsterdam-Amstelland police region (the Netherlands). This article aims to demonstrate that the ESOM tool provides a valuable exploratory instrument for examining unstructured text in police reports. First, it is shown how ESOM was used to discover a range of new features that better distinguish domestic from non-domestic violence cases. Second, it is demonstrated how this resulted in a significant improvement in classification accuracy. Third, the ESOM tool facilitates an in-depth investigation of the nature and scope of domestic violence, which is particularly useful for the domain expert. Interestingly, it was discovered that the definition of domestic violence employed by the management was much broader than the definition employed by police officers. Fourth, the ESOM tool enables an accurate and automated assignment of either a domestic or a non-domestic violence label to unclassified cases. Finally, ESOM is a highly accurate and comprehensible case triage model for detecting and retrieving wrongly classified cases.
    • Gebruik van de Balanced Scorecard in Kredietmanagement

      Theunissen, Ludo (Financieel Management, 2003)
    • Gebruik van de vermogenstromentabel

      Roodhooft, Filip (Accountancy en Bedrijfskunde Kwartaalschrift, 1991)
    • Geëngageerd veranderen

      Van den Broeck, Herman; Devos, Geert; Bouckenooghe, Dave (2010)
    • Gender differences in Commitment to change: impacted by gender or by being part of a minority group?

      Deprez, Jana; Van den Broeck, Herman; Cools, Eva; Bouckenooghe, Dave (2012)
    • Gender stereotypes in management: a comparative study in communist and post-communist Romania

      Curseu, Petru L .; Boros, Smaranda (International Journal of Psychology, 2011)
    • Generalized multi-scale stochastic reservoir Opportunity Index for enhanced well placement optimization under uncertainty in green and brownfields

      Vaseghi, Forough; Ahmadi, Mohammad; Sharifi, Mohammad; Vanhoucke, Mario (Oil & Gas Science and Technology, 2021)
      Well placement planning is one of the challenging issues in any field development plan. Reservoir engineers always confront the problem that which point of the field should be drilled to achieve the highest recovery factor and/or maximum sweep efficiency. In this paper, we use Reservoir Opportunity Index (ROI) as a spatial measure of productivity potential for greenfields, which hybridizes the reservoir static properties, and for brownfields, ROI is replaced by Dynamic Measure (DM), which takes into account the current dynamic properties in addition to static properties. The purpose of using these criteria is to diminish the search region of optimization algorithms and as a consequence, reduce the computational time and cost of optimization, which are the main challenges in well placement optimization problems. However, considering the significant subsurface uncertainty, a probabilistic definition of ROI (SROI) or DM (SDM) is needed, since there exists an infinite number of possible distribution maps of static and/or dynamic properties. To build SROI or SDM maps, the k-means clustering technique is used to extract a limited number of characteristic realizations that can reasonably span the uncertainties. In addition, to determine the optimum number of clustered realizations, Higher-Order Singular Value Decomposition (HOSVD) method is applied which can also compress the data for large models in a lower-dimensional space. Additionally, we introduce the multiscale spatial density of ROI or DM (D2ROI and D2DM), which can distinguish between regions of high SROI (or SDM) in arbitrary neighborhood windows from the local SROI (or SDM) maxima with low values in the vicinity. Generally, we develop and implement a new systematic approach for well placement optimization for both green and brownfields on a synthetic reservoir model. This approach relies on the utilization of multi-scale maps of SROI and SDM to improve the initial guess for optimization algorithm. Narrowing down the search region for optimization algorithm can substantially speed up the convergence and hence the computational cost would be reduced by a factor of 4.
    • Genetic algorithms for single machine scheduling problems: a trade-off between intensifications and diversification

      Sels, Veronique; Vanhoucke, Mario (2012)
      This article reviews the literature on attitudes toward change. This narrative review of 58 journal articles published between 1993 and 2007 indicates that there is a need for a more complete typology of attitudes toward change that also fully captures the core essence of this concept. By means of content analysis we first examined the conceptual overlap between the eight attitude-related constructs included in this review and the working definition of attitudes toward change. Second, the concept “attitudes toward change” was described along four major theoretical lenses: (a) nature of change, (b) level of change, (c) positive—negative view on change, and (d) research perspective. This conceptual review not only summarizes the current state of research but also offers a more complete typology of attitudes toward change, and highlights directions for possible future inquiry.
    • Geographical concentration of production in EU manufacturing

      Sleuwaegen, Leo; Veugelers, Reinhilde (2005)