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Document Server@UHasselt (58.026 recursos)

Repository of the University of Hasselt containing publications in the fields of statistics, computer science, information strategies and material from the Institute for behavioural sciences.

Research Institutes - Institute for Mobility (IMOB)

Mostrando recursos 1 - 20 de 827

  1. Reflections and prospects about the relationship between master thesis and design project in interior architectural education

    Petermans, Ann; Vanrie, Jan; Pint, Kris; Van Cleempoel, Koenraad

  2. Photo-elicitation: using photographs to read retail interiors through consumers' eyes

    Petermans, Ann; Kent, Anthony; Van Cleempoel, Koenraad

  3. Cognitive processes and attitudes in bipolar disorder: A study into personality, dysfunctional attitudes and attention bias in patients with bipolar disorder and their relatives

    Jabben, Nienke; Arts, Baer; JONGEN, Ellen; Smulders, Fren T. Y.; van Os, Jim; Krabbendam, Lydia
    Background: Research in cognitive processes and attitudes in bipolar disorder is scarce and has provided mixed findings, possibly due to differences in current mood state. It is unclear whether alterations in cognitive processes and attitudes are only related to the depressive mood states of bipolar patients or also represent a vulnerability marker for the development of future (depressive) episodes. This was investigated in the current study. Methods: Both implicit (attentional bias for emotional words) and explicit (dysfunctional attitudes and personality characteristics) measures of cognitive processes and attitudes were assessed in 77 bipolar patients with varying levels of depressive symptoms (depressed...

  4. Development of Land Use Regression Models for PM2.5, PM2.5 Absorbance, PM10 and PMcoarse in 20 European Study Areas; Results of the ESCAPE Project

    Eeftens, Marloes; Beelen, Rob; de Hoogh, Kees; Bellander, Tom; Cesaroni, Giulia; Cirach, Marta; Declercq, Christophe; Dedele, Audrius; Dons, Evi; de Nazelle, Audrey; Dimakopoulou, Konstantina; Eriksen, Kirsten; Falq, Gregoire; Fischer, Paul; Galassi, Claudia; Grazuleviciene, Regina; Heinrich, Joachim; Hoffmann, Barbara; Jerrett, Michael; Keidel, Dirk; Korek, Michal; Lanki, Timo; Lindley, Sarah; Madsen, Christian; Moelter, Anna; Nador, Gizella; Nieuwenhuijsen, Mark; Nonnemacher, Michael; Pedeli, Xanthi; Raaschou-Nielsen, Ole; Patelarou, Evridiki; Quass, Ulrich; Ranzi, Andrea; Schindler, Christian; Stempfelet, Morgane; Stephanou, Euripides; Sugiri, Dorothea; Tsai, Ming-Yi; Yli-Tuomi, Tarja; Varro, Mihaly J.; Vienneau, Danielle; von Klot, Stephanie; Wolf, Kathrin; Brunekreef, Bert; Hoek, Gerard
    Land Use Regression (LUR) models have been used increasingly for modeling small-scale spatial variation in air pollution concentrations and estimating individual exposure for participants of cohort studies. Within the ESCAPE project, concentrations of PM2.5, PM2.5 absorbance, PM10, and PMcoarse were measured in 20 European study areas at 20 sites per area. GIS-derived predictor variables (e.g., traffic intensity, population, and land-use) were evaluated to model spatial variation of annual average concentrations for each study area. The median model explained variance (R-2) was 71% for PM2.5 (range across study areas 35-94%). Model R-2 was higher for PM2.5 absorbance (median 89%, range 56-97%)...

  5. Travel behaviour in persons with Multiple Sclerosis using travel diaries and GPS tracking technologies

    Neven, An; Janssens, Davy; Alders, Geert; Wets, Geert; Van Wijmeersch, Bart; Feys, Peter
    Background: Persons with Multiple Sclerosis (MS) experience several physical and cognitive problems which can influence their travel behavior. Few data are available about the real participation (restrictions) in daily outdoor activity and travel behaviour. Objective: This pilot study aimed to document, in relation to disease-related disability, which, and how many, activities and trips were daily made by persons with MS, and what transport modes were used. Methods: 36 persons with MS (Expanded Disability Status Scale, EDSS, 1.5-8.0, age 27-63) and 24 healthy controls (age 25-62) were studied, using activity-related travel diaries and GPS tracking devices. Information about overall disability characteristics...

  6. Exploiting graph-theorectic tools for matching and partitioning of agent population in an agent-based model for traffic and transportation applications

    Keren, Daniel; Yasar, Ansar-Ul-Haque; Knapen, Luk; Cho, Sungjin; Bellemans, Tom; Janssens, Davy; Wets, Geert; Schuster, Assaf; Sharfman, Izchak
    In this position paper, we exploit the tools from the realm of graph theory to matching and portioning problems of agent population in an agent-based model for traffic and transportation applications. We take the agent-based carpooling application as an example scenario. The first problem is matching, which concerns finding the optimal pairing among agents. The second problem is partitioning, which is crucial for achieving scalability and for other problems that can be parallelized by separating the passenger population to subpopulations such that the interaction between different sub-populations is minimal. Since in real-life applications the agent population, as well as their...

  7. Proactive Approaches in Quantitative Micro- and Macroscopic Crash Analysis: Focus on Model-Based Safety Evaluation of Traffic Policy Measures

    Pirdavani, Ali

  8. Spatial Analysis of Fatal and Injury Crashes in Flanders, Belgium: Application of Geographically Weighted Regression

    Pirdavani, Ali; Brijs, Tom; Bellemans, Tom; Wets, Geert
    Generalized Linear Models (GLMs) are the most widely used models utilized in crash prediction studies. These models illustrate the relationships between the dependent and explanatory variables by estimating fixed global estimates. Since the crash occurrences are often spatially heterogeneous and are affected by many spatial variables, the existence of spatial correlation in the data is examined by means of calculating Moran’s I measures for dependent and explanatory variables. The results indicate the necessity of considering the spatial correlation when developing crash prediction models. The main objective of this research is to develop different Zonal Crash Prediction Models (ZCPMs) within the...

  9. Multiple Criteria Performance Analysis of Non-dominated Sets Obtained by Multi-objective Evolutionary Algorithms for Optimisation

    JANSSENS, Gerrit; Pangilinan, Jose Maria
    The paper shows the importance of a multi-criteria performance analysis in evaluating the quality of non-dominated sets. The sets are generated by the use of evolutionary algorithms, more specifically through SPEA2 or NSGA-II. Problem examples from different problem domains are analyzed on four criteria of quality. These four criteria namely cardinality of the non-dominated set, spread of the solutions, hyper-volume, and set coverage do not favour any algorithm along the problem examples. In the Multiple Shortest Path Problem (MSPP) examples, the spread of solutions is the decisive factor for the 2SI1M configuration, and the carchnality and set coverage for the...

  10. Pickup and delivery selection problem

    Maes, T.; Caris, A.; Ramaekers, K.; Janssens, G.K.; Bellemans, T.
    This paper focuses on the modelling of carrier decisions within an activity-based freight transportation model. To model freight transport, the different actors who are included in the decision making process have to be represented. One of these actors is the carrier. This paper formulates the decisions of the carrier as a selective pickup and delivery problem. To be able to better represent the influence of carrier decisions on the logistic module within an activity based freight transportation model. The objective is to maximize the profit gained, by selecting transport requests. A local search heuristic is presented to solve the problem.

  11. Seoul activity-based model: an application of Feathers solutions to Seoul metropolitan area

    Do Lee, Won; Cho, Sungjin; Bellemans, Tom; Janssens, Davy; Wets, Geert; Choi, Keechoo; Joh, Chang-Hyeon
    As a case study area, Seoul metropolitan area in Korea, where has been experiencing transportation problems including congestions and emissions, currently needs an alternative policy measure at the individual level, instead of large scale infrastructure constructions. Even though some researches based on an activity-based approach dealing with an individual travel behavior have been conducted in Korea, none of them used a simulation framework. Considering a genuine activity-based transportation demand forecast, there is no better option but to introduce the activity-based simulation framework. Among several activity-based transportation frameworks, Feathers will indeed be applied into the study area because it is the...

  12. An agent-based model to evaluate carpooling at large manufacturing plants

    Bellemans, Tom; Bothe, Sebastian; Cho, Sungjin; Giannotti, Fosca; Janssens, Davy; Knapen, Luk; K??rner, Christine; May, Michael; Nanni, Mirco; Pedreschi, Dino; Stange, Hendrik; Trasarti, Roberto; Yasar, Ansar-Ul-Haque; Wets, Geert
    Carpooling is thought to be part of the solution to resolve traffic congestion in regions where large companies dominate the traffic situation because coordination and matching between commuters is more likely to be feasible in cases where most people work for a single employer. Moreover, carpooling is not very popular for commuting. In order for carpooling to be succesful, an online service for matching commuter profiles is indispensable due to the large community involved. Such service is necessary but not sufficient because carpooling requires rerouting and activity rescheduling along with candidate matching. We advise to introduce services of this kind...

  13. Assessing the Impacts of a Teleworking Policy on Crash Occurrence: The Case of Flanders, Belgium

    Pirdavani, Ali; Brijs, Tom; Bellemans, Tom; Kochan, Bruno; Wets, Geert
    Travel demand management (TDM) consists of a variety of policy measures that affect the effectiveness of transportation systems by changing travel behavior. The primary objective of such TDM strategies is not to improve traffic safety, although their impact on traffic safety should not be neglected. The main purpose of this study is to simulate the traffic safety impact of conducting a teleworking scenario (i.e. 5% of the working population engages in teleworking) in the study area, Flanders, Belgium. Since TDM strategies are usually conducted at a geographically aggregated level, crash prediction models (CPMs) should also be developed at an aggregate...

  14. Integrated health impact assessment of travel behaviour: model exploration and application to a fuel price increase

    Dhondt, Stijn; Kochan, Bruno; Beckx, Carolien; Lefebvre, Wouter; Pirdavani, Ali; Degraeuwe, Bart; Bellemans, Tom; Int Panis, Luc; Macharis, Cathy; Putman, Koen
    Transportation policy measures often aim to change travel behaviour towards more efficient transport. While these policy measures do not necessarily target health, these could have an indirect health effect. We evaluate the health impact of a policy resulting in an increase of car fuel prices by 20% on active travel, outdoor air pollution and risk of road traffic injury. An integrated modelling chain is proposed to evaluate the health impact of this policy measure. An activity-based transport model estimated movements of people, providing whereabouts and travelling kilometres. An emission- and dispersion model provided air quality levels (elemental carbon) and a...

  15. Assessing the Marginal Impact of a Trip on Population Exposure to Air Pollution

    Beckx, C.; Lefebvre, W.; Degraeuwe, B.; Vanhulsel, M.; Dhondt, S.; Kochan, B.; Bellemans, T.; Jansen, S.; Int Panis, L.; De Vlieger, I.
    Purpose: There are different reasons to assume that not every vehicle kilometre yields the same environmental impact. For instance, some vehicle kilometres are driven at high speeds on highways, while others are driven at low speeds in urban environments. This will have an impact on the resulting exhaust missions. Furthermore, the timing of a trip determines its impact on the resulting concentration levels. Pollutants emitted during trips at night will have a larger impact on the ground-level concentrations than emissions exhausted during the day, due to the greater atmospheric stability. And, concerning the impact on exposure, emissions produced in cities...

  16. Verkeersveiligheid in 2015: doorrekening van een aantal maatregelen uit het Verkeersveiligheidsplan Vlaanderen

    Ariën, Caroline; Hermans, Elke

  17. Effecten van maatregelen op verkeersveiligheid in 2015 - Steunpunt verkeersveiligheid ontwikkelt rekenmodel

    Ariën, Caroline; Hermans, Elke
    Om de verkeersveiligheid verder te verbeteren kan het Vlaamse Gewest uiteenlopende maatregelen nemen. Maar welke maatregel levert daarbij het meeste op? Hoeveel verkeersslachtoffers kan een maatregel voorkomen? En weegt de winst in verkeersveiligheid voldoende op tegen de investeringskosten? In een studie van het Steunpunt Mobiliteit en Openbare Werken, spoorVerkeersveiligheid, werd een rekenmodel ontwikkeld waarmee het mogelijk is het effect van een maatregel op de verkeersveiligheid in Vlaanderen te kwantificeren wanneer een set van regionale en lokale maatregelen wordt doorgerekend.

  18. Improving health through policies that promote active travel: A review of evidence to support integrated health impact assessment

    de Nazelle, Audrey; Nieuwenhuijsen, Mark J.; Anto, Josep M.; Brauer, Michael; Briggs, David; Braun-Fahrlander, Charlotte; Cavill, Nick; Cooper, Ashley R.; Desqueyroux, Helene; Fruin, Scott; Hoek, Gerard; Panis, Luc Int; Janssen, Nicole; Jerrett, Michael; Joffe, Michael; Andersen, Zorana Jovanovic; van Kempen, Elise; Kingham, Simon; Kubesch, Nadine; Leyden, Kevin M.; Marshall, Julian D.; Matamala, Jaume; Mellios, Giorgos; Mendez, Michelle; Nassif, Hala; Ogilvie, David; Peiro, Rosana; Perez, Katherine; Rabl, Ari; Ragettli, Martina; Rodriguez, Daniel; Rojas, David; Ruiz, Pablo; Sallis, James F.; Terwoert, Jeroen; Toussaint, Jean-Francois; Tuomisto, Jouni; Zuurbier, Moniek; Lebret, Erik
    Background: Substantial policy changes to control obesity, limit chronic disease, and reduce air pollution emissions, including greenhouse gasses, have been recommended. Transportation and planning policies that promote active travel by walking and cycling can contribute to these goals, potentially yielding further co-benefits. Little is known, however, about the interconnections among effects of policies considered, including potential unintended consequences. Objectives and methods: We review available literature regarding health impacts from policies that encourage active travel in the context of developing health impact assessment (HIA) models to help decision-makers propose better solutions for healthy environments. We identify important components of HIA models...

  19. Cycling: Health Benefits and Risks

    Panis, Luc Int

  20. Ten years of research and policy on particulate matter air pollution in hot spot Flanders

    Buekers, Jurgen; Stassen, Kristien; Panis, Luc Int; Hendrickx, Kim; Torfs, Rudi
    Air pollution is a systemic risk embedded in environmental, political, social and economic systems. Risk assessments on air pollution therefore involve communication between several stakeholders at multiple scale levels. This study focuses on a small part of the risk assessment, evaluating actions or decisions on both policy and research fields using an importance-performance/feasibility analysis as a scoring methodology. Subsequently, results were discussed by researchers and policy makers at a closed workshop to guarantee a safe place for knowledge integration. Learned aspects and new insights are useful for future scenarios on air pollution. This study was performed in Flanders, the European...

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