• Identifying competencies of volunteer board members of community sports clubs

      Balduck, Anne-Line; Van Rossem, Annick; Buelens, Marc (Nonprofit and Voluntary Sector Quarterly, 2010)
    • Identifying influencers in a social network: the value of real referral data

      Roelens, Iris; Baecke, Philippe; Benoit, Dries F. (Decision Support Systems, 2016)
      Individuals influence each other through social interactions and marketers aim to leverage this interpersonal influence to attract new customers. It still remains a challenge to identify those customers in a social network that have the most influence on their social connections. A common approach to the influence maximization problem is to simulate influence cascades through the network based on the existence of links in the network using diffusion models. Our study contributes to the literature by evaluating these principles using real-life referral behaviour data. A new ranking metric, called Referral Rank, is introduced that builds on the game theoretic concept of the Shapley value for assigning each individual in the network a value that reflects the likelihood of referring new customers. We also explore whether these methods can be further improved by looking beyond the one-hop neighbourhood of the influencers. Experiments on a large telecommunication data set and referral data set demonstrate that using traditional simulation based methods to identify influencers in a social network can lead to suboptimal decisions as the results overestimate actual referral cascades. We also find that looking at the influence of the two-hop neighbours of the customers improves the influence spread and product adoption. Our findings suggest that companies can take two actions to improve their decision support system for identifying influential customers: (1) improve the data by incorporating data that reflects the actual referral behaviour of the customers or (2) extend the method by looking at the influence of the connections in the two-hop neighbourhood of the customers.
    • Imitation of management practices In supply networks: Relational and environmental effects

      Reusen, Evelien; Stouthuysen, Kristof; Roodhooft, Filip; Van den Abbeele, Alexandra; Slabbinck, Hendrik (Journal of Supply Chain Management, 2020)
      This study investigates the imitative use of management practices across a multitier supply network. Although imitation may take the form of any management practice, operationally, we focus on whether the buyer's control practices used with first‐tier suppliers results in similar control practices being used by these first‐tier suppliers with the second‐tier suppliers. Drawing on institutional theory, we identify relational context (i.e., affective commitment) and environmental context (i.e., environmental uncertainty) as two important factors influencing the extent to which such imitation takes place. Using unique survey data of vertically linked supply chain triads, we generally find support for the occurrence of imitation and more so in cases of high affective commitment. The results regarding environmental uncertainty further reveal selectivity in imitative behavior, calling attention to the level of deliberateness in imitation decisions in supply networks. Besides contributing to theory on imitative behaviors in the supply chain, this study also generates practical implications on the spread of management practices across multiple tiers.
    • The impact of a limited budget on the corrective action taking process

      Song, Jie; Martens, Annelies; Vanhoucke, Mario (European Journal of Operational Research, 2020)
      The main goal of project control is to identify the deviations between the baseline schedule and the actual progress of the project by measuring the project performance in progress and using the project control methodologies to generate warning signals that act as triggers for corrective actions to bring the project back on track. To that purpose, tolerance limits are set on the required project performance, such that if the warning signals exceed these limits, they should result in appropriate corrective actions. In this paper, the Earned Value Management (EVM) control method and its extensions are used to test their abilities in taking corrective actions under a budget constraint. More precisely, four different approaches are proposed for allocating the limited budget along the different project phases, and whether a proper allocation of the budget results in an increase of the expected project outcome is measured. A large computational experiment is conducted on a set of artificial projects to assess the efficiency and effectiveness of the budget allocation models. Results show that simply allocating budget according to the time accrue of projects performs better than methods that take cost, time/cost or risk information into account. Moreover, results indicate that allocating a budget that increases in later stages of the project is beneficial for the outcome.
    • The impact of applying effort to reduce activity variability on the project time and cost performance

      Martens, Annelies; Vanhoucke, Mario (European Journal of Operational Research, 2019)
      During project execution, deviations from the baseline schedule are inevitable due to the presence of uncertainty and variability. To assure successful project completion, the project’s progress should be monitored and corrective actions should be taken to get the project back on track. This paper presents an integrated project control procedure for measuring the project’s progress and taking corrective actions when necessary. We apply corrective actions that reduce the activity variability to improve the project outcome. Therefore, we quantify the relation between the applied managerial effort and the reduction in activity variability. Moreover, we define three distinct control strategies to take corrective actions on activities, i.e. an interventive strategy, a preventive strategy and a hybrid strategy. A computational experiment is conducted to evaluate the performance of these strategies. The results of this experiment show that different strategies are preferred depending on the topological network structure of projects. More specifically, the interventive strategy and hybrid strategy are preferred for parallel projects, while the preventive strategy is preferred for serial projects.
    • Impact of coherent versus multiple identities on knowledge integration

      Willem, Annick; Scarbrough, Harry; Buelens, Marc (Journal of Information Science, 2008)
    • Impact of emotional stability and attitude on consumption decisions under risk

      Verbeke, Wim; Van Kenhove, Patrick (Journal of Health Communication, 2002)
    • Impact of lean production on perceived job autonomy and job satisfaction: an experimental study

      Rodriguez, Denise; Buyens, Dirk; Van Landeghem, Hendrik; Lasio, Virginia (Human Factors and Ergonomics in Manufacturing & Service Industries, 2016)
      Previous studies have indicated positive and negative effects of lean production on employees' perceived work characteristics and job attitudes. The most detrimental consequence of lean production is a decrease in the perceived job autonomy of workshop employees. To reduce these negative consequences, we propose human resource practices for integration with lean production. Drawing on the job characteristics model, we hypothesized that the implementation of lean production combined with human resource practices would enhance perceived job autonomy, job satisfaction, and operational performance. To evaluate our hypotheses, we used an experimental design consisting of a simulation game that mimics a manufacturing company. We implemented lean production combined with human resource practices in this simulated company. The results indicated a significant increase in perceived job autonomy, job satisfaction, and operational performance. Moreover, the results revealed a positive relationship between job satisfaction and operational performance.
    • Impact of nested inventory allocation policies in a newsvendor setting

      Samii, Behzad (International Journal of Production Economics, 2016)
      We model an inventory management setting in which the decision maker first uses newsvendor model to decide on the amount of ordered perishable inventory for a fixed consumption period, based on the best available forecast of demand at the time of ordering. After a relatively long lead time, the consumption period starts and she has to assign the received inventory to two priority customer classes given the -newly updated- rate of arrival of each class. The assignment of inventory requires two simultaneous decisions: 1) the reservation quantity for the high priority class and 2) the choice of inventory allocation mechanism (Standard Nesting SN or Theft Nesting TN), to minimize the expected units short of the high priority class while minimizing the wasted inventory at the end of the fixed consumption period. We assume that some partial information about the bottom line impact of a shortage in high priority customer class compared to the other can be conjectured. For both inventory allocation mechanisms, we then calculate the monetary benefit for all feasible reserved quantities to identify the optimal reserved quantity. We derive closed form expressions for the expected number of units short in each demand class under SN and TN allocation mechanisms. We showcase the management of electricity smart meter inventory in a multi-year implementation project consisting of multiple fixed consumption periods. Numerical experiments and graphical interpretations feature the optimum allocation policy and the cost minimizing reserved quantity under such policy.
    • Impact of organizational structure on nurses' job satisfaction: a questionnaire survey

      Willem, Annick; Buelens, Marc; Dejonghe, I. (International Journal of Nursing Studies, 2007)
    • Impact of recurrent changes in the work environment on nurses' psychological well-being and sickness absence

      Verhaeghe, Rik; Vlerick, Peter; Gemmel, Paul; Van Maele, G.; De Backer, G. (Journal of Advanced Nursing, 2006)
    • Impact of replenishment rules with endogenous lead times

      Boute, Robert (4OR - A quarterly Journal of Operations Research, 2007)
    • Impact of sales force automation on technology-related stress, effort, and technology usage among salespeople

      Rangarajan, Deva; Jones, Eli; Wynne, Chin (Industrial Marketing Management, 2005)
    • The impact of superstar firms on the labor share: Evidence from Belgium

      Abraham, Filip; Bormans, Yannick (De Economist - Netherlands Economic Review, 2020)
      The Belgian labor share, measured as the part of GDP going to labor, is declining. This fits into the global secular trend of decreasing labor shares. A novel strand in the literature focusses on its granular drivers. Recent research in the United States suggests that superstar firms, defined as large firms with a dominant market share, are increasing their market share and relate this to the fall of the labor share (Autor et al. in Q J Econ 135(2):645-709, 2020). Using a long time series of Belgian firm-level data from 1985 to 2014, we provide evidence for the link between the rise of market concentration and the decrease of the labor share in its two largest sectors: Manufacturing and Wholesale & Retail. These two sectors represent approximately half of the Belgian economy. We do not find evidence in other Belgian sectors.
    • Impact of the regulatory framework for transmission investments on the cost of renewable energy in the EU.

      Saguan, Marcelo; Meeus, Leonardo (Energy Economics, 2014)
      Under the current regulatory frame in the EU, transmission planning is done at the national level to maximize national welfare, rather than European welfare. In this paper, we develop a competitive equilibrium model that calculates the impact of this imperfect regulatory framework on the cost of renewable energy. We apply the model to a power system with two interconnected zones, and find that the impact is case specific, but significant. We also find that the negative impact of national transmission planning on the cost of renewable energy is more significant in a state of the world in which Member States trade renewable energy, but that this negative effect is much smaller than the positive effect of renewable energy trade between Member States. We conclude that the imperfect regulatory framework for transmission investment is a significant cost for renewable energy in the EU, but that it should not stop Member States from trading renewable energy.
    • The impacts of internal quality management relations on the triple bottom line: A dynamic capability perspective

      Alsawafi, Ahmed; Lemke, Fred; Yang, Ying (International Journal of Production Economics, 2020)
      This paper takes the dynamic capability (DC) theory as a theoretical perspective to investigate empirically the role of the internal dimensional view of quality management (QM) relations (management and employee) in driving sustainability performance, specifically social, environmental and economic dimensions. Data was collected from 226 UK manufacturing firms, and the relationships were empirically tested using structural equation modelling (SEM). The results show that internal management relation contributes to supporting employee relations and quality training. However, it is indirectly related to sustainability performance. In addition, management relations are indirectly connected with sustainability performance through employee relations. This study is relevant to academics and practitioners as it focuses on significant QM relations that are beneficial for the triple bottom line (TBL) of firms. As firms adopt QM relations to sustain their competitive advantage and achieve operational performance, it is crucial to identify which internal quality management relations associated with social, environmental and economic sustainability performance dimensions exert an influence.
    • Implementatie in 9 stappen: Inkoop en Total Cost of Ownership (Deel 2)

      Roodhooft, Filip; Degraeve, Zeger; Genou, D.; Seré, P.; Smets, R. (Business Logistics, 1999)