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See detailBuilding an Effective Strategy To Supply High Frequency Stores in Emerging Cities
Sabiri, Asmaa; Riane, Fouad; Limbourg, Sabine ULg

in Cools, Mario; Limbourg, Sabine (Eds.) Proceedings of the BIVEC-GIBET Transport Research Days 2017: Towards an Autonomous and Interconnected Transport Future (2017)

Traditional distribution channels that cover nanostores still abound in merging megacities. These traditional retail formats need to be visited and supplied very frequently (High Frequency Stores) which ... [more ▼]

Traditional distribution channels that cover nanostores still abound in merging megacities. These traditional retail formats need to be visited and supplied very frequently (High Frequency Stores) which turns to be costly and time consuming if not well optimized. Supplying High Frequency Stores in emerging countries involves different constraints that make the associated optimization problems complex. In this paper, we deal with a real-life application problem where a company try to build an effective strategy to cover and to supply nanostores. We present an altered approach to a multi-depot multiple traveling salesman problem. The problem of concern is modeled as an assignment problem, combined with side constraints regarding disruption of pre-assignments and profit potential balance. The results show that the multi-objective function produces better profit and workload balance than setting a simple objective function and a constraint, one for the profit balance and the other for workload balance and vice-versa. [less ▲]

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See detailThe Fleet Size and Mix Vehicle Routing Problem with sequence-based pallet loading and axle weight constraints
Pollaris, Hanne; Braekers, Kris; caris, An et al

in Cools, Mario; Limbourg, Sabine (Eds.) Proceedings of the BIVEC-GIBET Transport Research Days 2017: Towards an Autonomous and Interconnected Transport Future (2017)

In this paper, the Fleet Size and Mix Vehicle Routing Problem (FSM) with sequence-based pallet loading and axle weight constraints is introduced. The effect of the integration of axle weight constraints ... [more ▼]

In this paper, the Fleet Size and Mix Vehicle Routing Problem (FSM) with sequence-based pallet loading and axle weight constraints is introduced. The effect of the integration of axle weight constraints in a FSM is analyzed by comparing the FSM with and without axle weight constraints. A vehicle fleet of 30-foot and 45-foot trucks, consisting of a tractor and a semi-trailer, is considered. Furthermore, two scenarios are analyzed for which the objective function differs: in the first scenario the objective is to minimize total distance while in the second scenario the objective is the minimization of total transport costs. An Iterated Local Search metaheuristic algorithm is used to tackle the problem. The results indicate that the vehicle fleet strongly influences the impact of the integration of axle weight constraints on solution cost. Furthermore, the analysis points out that fleet size and mix decisions may be influenced by the integration of axle weight constraints. [less ▲]

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See detailEvaluation of the implementation of integrated care for people with chronic conditions
Van Durme, Thérèse; Anthierens, Sibyl; Van Hecke, Ann et al

Conference (2017, May)

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See detailDiversity in sequences, post-translational modifications and expected pharmacological activities of toxins from four Conus species revealed by the combination of cutting-edge proteomics, transcriptomics and bioinformatics
Degueldre, Michel; Verdenaud, Marion; Garikoitz, Legarda et al

in Toxicon (2017), 130

Venomous animals have developed a huge arsenal of reticulated peptides for defense and predation. Based on various scaffolds, they represent a colossal pharmacological diversity, making them top ... [more ▼]

Venomous animals have developed a huge arsenal of reticulated peptides for defense and predation. Based on various scaffolds, they represent a colossal pharmacological diversity, making them top candidates for the development of innovative drugs. Instead of relying on the classical, low-throughput bioassay-guided approach to identify innovative bioactive peptides, this work exploits a recent paradigm to access to venom diversity. This strategy bypasses the classical approach by combining high-throughput transcriptomics, proteomics and bioinformatics cutting-edge technologies to generate reliable peptide sequences. The strategy employed to generate hundreds of reliable sequences from Conus venoms is deeply described. The study led to the discovery of (i) conotoxins that belong to known pharmacological families targeting various GPCRs or ion-gated channels, and (ii) new families of conotoxins, never described to date. It also focusses on the diversity of genes, sequences, folds, and PTM's provided by such species. [less ▲]

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See detailLes pouvoirs publics et les édifices cultuels en Belgique
Husson, Jean-François ULg

in Revue du Droit des Religions (2017), (3), 61-78

The Belgian regime of relations between the State and religious or philosophical communities results notably in financial supports for buildings used for worship and moral counselling. These interventions ... [more ▼]

The Belgian regime of relations between the State and religious or philosophical communities results notably in financial supports for buildings used for worship and moral counselling. These interventions are essentially a legacy of the French Concordat, largely unchallenged by the regionalization process. Today, it has to respond to contrasting situations between religions recognized in the 19th century – generally declining – and more recently recognized ones – generally expanding –. An additional complication originates in differences in ownership of the buildings or their classification as listed buildings. After presenting the situation by religious and philosophical community and level of power, this paper questions the equity of the system and addresses the possible developments. [less ▲]

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See detailL'intrapreneuriat, vecteur de nouvelles formes de collaborations ?
Lisein, Olivier ULg

Conference (2017, May)

Intervention sur les enjeux, les challenges et les bénéfices potentiels de l'intrapreneuriat comme vecteur d'innovations et de collaborations pour et au sein des entreprises. Intervention réalisée lors de ... [more ▼]

Intervention sur les enjeux, les challenges et les bénéfices potentiels de l'intrapreneuriat comme vecteur d'innovations et de collaborations pour et au sein des entreprises. Intervention réalisée lors de la table ronde "Interview d’experts: Les nouvelles pratiques de management dans l’entreprise collaborative" dont le fil conducteur est résumé comme suit : "Face à un marché en pleine mutation, nous verrons lors de cette table ronde quelles actions de management les entreprises mettent en place pour valoriser les individus et développer leurs compétences, mais aussi pérenniser une relation empreinte d’autonomie". [less ▲]

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See detailIsomeric species detection of base oil hydrocarbons by photo ionization GC×GC-HRTOF-MS
Giri, Anupam ULg; Courtiade, M; Racaud, A et al

Conference (2017, May)

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See detailThe internet as a source of information used by women after childbirth to meet their need for information: A web-based survey.
Slomian, Justine ULg; Bruyère, Olivier ULg; Reginster, Jean-Yves ULg et al

in Midwifery (2017), 48

OBJECTIVE: the aims of this survey were: (a) to evaluate the need of information after childbirth and what questions do 'new' mothers ask themselves; (b) to assess why and how women use the Internet to ... [more ▼]

OBJECTIVE: the aims of this survey were: (a) to evaluate the need of information after childbirth and what questions do 'new' mothers ask themselves; (b) to assess why and how women use the Internet to meet their need of information; (c) to describe how the respondents evaluate the reliability of the information found; (d) to understand how the information found on the Internet affects women's decision-making; and (e) to appreciate how health professionals react to the information found by the women. DESIGN: this study used a large web-based survey that was widely broadcasted on various websites and social networks. SETTING AND PARTICIPANTS: belgian women who had a child under 2 years old and who agreed to participate were included in the study. FINDINGS: 349 questionnaires were valid for analyses. After childbirth, 90.5% of women admitted to using the Internet to seek information about themselves or about their baby, regardless of socioeconomic status or age. There were various reasons for seeking information on the Internet, but the most frequent reason the women expressed was to find information 'on their own' (88.1%). The most searched for topic was breastfeeding. The women believed that the information was quite useful (82.7%) but they assigned an average score of 5.3 out of 10 for the quality of the information they found on the Internet. Approximately 80% of the women felt that the Internet helped them control a decision that they made 'a little', 'often' or 'very often'. Professionals are not always willing to talk about information found on the Internet with mothers. Therefore, many women believed that health professionals should suggest reliable Internet websites for new mothers. CONCLUSIONS: the integration of the Internet and new technologies could be a useful tool during postpartum management. [less ▲]

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See detailIsotopic half-life and enrichment factor in two species of European freshwater fish larvae: an experimental approach
Latli, Adrien; Sturaro, Nicolas ULg; Dujardin, Nelson et al

in Rapid Communications in Mass Spectrometry (2017), 31(8), 685-692

RATIONALE: Stable isotope ratios of carbon and nitrogen are valuable tools for field ecologists to use to analyse animal diets. However, the application of these tools requires knowledge of the tissue ... [more ▼]

RATIONALE: Stable isotope ratios of carbon and nitrogen are valuable tools for field ecologists to use to analyse animal diets. However, the application of these tools requires knowledge of the tissue enrichment factor (TEF) and half-life (HL). We experimentally compared TEF and HL in two freshwater fish larvae. We hypothesised that chub had a better growth/tissue replacement ratio than roach, due to the use of a food closer to their natural diet. METHODS: We determined the isotopic HL, the TEF and the contribution of growth or metabolic tissue replacement to dynamic isotopic incorporation. After yolk sac resorption, larvae were fed for 5 weeks with prey similar to their natural diet (Artemia nauplii) up to the isotopic equilibrium followed by Chironomid larvae. Stable isotope measurements were carried out using a continuous flow isotope ratio mass spectrometer coupled to an elemental analyser. RESULTS: Changes in isotopic composition strongly followed the predictions of exponential growth and time-dependent models. The isotopic HL varied between 8.2 and 12.6 days and the TEF of nitrogen and carbon ranged from 1.7 to 2.1‰ and from –0.9 to 1.2 ‰, respectively. The incorporation of dietary 13C was due more to the production of new tissue (between 56 and 79%) than to the metabolic process. Chub allocated more energy to growth than roach and the Chironomidae diet contributed more to the consumers’ growth than the Artemia diet. CONCLUSIONS: Metabolic rates seemed lower for chub than for roach, especially when they were fed with Chironomidae. A Chironomidae-based diet would be more profitable to chub, and the high associated growth rate could increase the development of the fish larvae. The HL and TEF were in the range of those reported in the literature. These results will be helpful for field-based studies, because they can help to increase the accuracy of models. [less ▲]

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See detailL'enseignement-apprentissage du français dans le qualifiant : regards croisés
Scheepers, Caroline ULg; Outers, Pierre ULg; Werner, Anne-Catherine ULg

Poster (2017, April 29)

La présentation donne à voir les résultats partiels d'une recherche exploratoire qui a consisté à questionner les élèves et les professeurs de l'enseignement secondaire de transition et du qualifiant à ... [more ▼]

La présentation donne à voir les résultats partiels d'une recherche exploratoire qui a consisté à questionner les élèves et les professeurs de l'enseignement secondaire de transition et du qualifiant à propos de leurs représentations relatives à l'enseignement-apprentissage du français dans le qualifiant. Pour l'heure, nous disposons des réponses apportées par 30 enseignants et par 450 élèves. A terme, cinquante enseignants et 1000 élèves sont concernés. [less ▲]

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See detailDes preuves : où, quand, comment ?
Rigo, Michel ULg

Speech/Talk (2017)

Expliquer une démonstration, prouver un résultat, énoncer une conjecture sont des activités qui font partie intégrante du quotidien du mathématicien. Dans ce court exposé, je passerai en revue quelques ... [more ▼]

Expliquer une démonstration, prouver un résultat, énoncer une conjecture sont des activités qui font partie intégrante du quotidien du mathématicien. Dans ce court exposé, je passerai en revue quelques exemples de preuves. Certaines sont classiques ou historiques, d'autres sont peut-être moins connues : des preuves à la Ramanujan, des preuves sans mots, le théorème des quatre couleurs, la conjecture de Klepler sur l'empilement de sphères,... Le but est de partager mes réflexions comme chercheur « professionnel » et enseignant. [less ▲]

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See detailThe Prediction-Focused Approach: An opportunity for hydrogeophysical data integration and interpretation
Hermans, Thomas ULg; Nguyen, Frédéric ULg; Klepikova, Maria et al

Conference (2017, April 28)

Hydrogeophysics is an interdisciplinary field of sciences aiming at a better understanding of subsurface hydrological processes. If geophysical surveys have been successfully used to qualitatively ... [more ▼]

Hydrogeophysics is an interdisciplinary field of sciences aiming at a better understanding of subsurface hydrological processes. If geophysical surveys have been successfully used to qualitatively characterize the subsurface, two important challenges remain for a better quantification of hydrological processes: (1) the inversion of geophysical data and (2) their integration in hydrological subsurface models. The classical inversion approach using regularization suffers from spatially and temporally varying resolution and yields geologically unrealistic solutions without uncertainty quantification, making their utilization for hydrogeological calibration less consistent. More advanced techniques such as coupled inversion allow for a direct use of geophysical data for conditioning groundwater and solute transport model calibration. However, the technique is difficult to apply in complex cases and remains computationally demanding to estimate uncertainty. In a recent study, we investigate a prediction-focused approach (PFA) to directly estimate subsurface physical properties from geophysical data, circumventing the need for classic inversions. In PFA, we seek a direct relationship between the data and the subsurface variables we want to predict (the forecast). This relationship is obtained through a prior set of subsurface models for which both data and forecast are computed. A direct relationship can often be derived through dimension reduction techniques. PFA offers a framework for both hydrogeophysical “inversion” and hydrogeophysical data integration. For hydrogeophysical “inversion”, the considered forecast variable is the subsurface variable, such as the salinity. An ensemble of possible solutions is generated, allowing uncertainty quantification. For hydrogeophysical data integration, the forecast variable becomes the prediction we want to make with our subsurface models, such as the concentration of contaminant in a drinking water production well. Geophysical and hydrological data are combined to derive a direct relationship between data and forecast. We illustrate the process for the design of an aquifer thermal energy storage (ATES) system. An ATES system can theoretically recover in winter the heat stored in the aquifer during summer. In practice, the energy efficiency is often lower than expected due to spatial heterogeneity of hydraulic properties combined to a non-favorable hydrogeological gradient. A proper design of ATES systems should consider the uncertainty of the prediction related to those parameters. With a global sensitivity analysis, we identify sensitive parameters for heat storage prediction and validate the use of a short term heat tracing experiment monitored with geophysics to generate informative data. First, we illustrate how PFA can be used to successfully derive the distribution of temperature in the aquifer from ERT during the heat tracing experiment. Then, we successfully integrate the geophysical data to predict medium-term heat storage in the aquifer using PFA. The result is a full quantification of the posterior distribution of the prediction conditioned to observed data in a relatively limited time budget. [less ▲]

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See detailL’espace public comme tribune
Brahy, Rachel ULg

Conference given outside the academic context (2017)

L’espace public a de tous temps été une tribune, un lieu où débattre, haranguer la foule, partager des opinions ou rassembler des soutiens. Le chapiteau de cirque et l’art dans la rue occupent cet espace ... [more ▼]

L’espace public a de tous temps été une tribune, un lieu où débattre, haranguer la foule, partager des opinions ou rassembler des soutiens. Le chapiteau de cirque et l’art dans la rue occupent cet espace sans pour autant l’utiliser comme tribune. La présentation d’un spectacle à un public implique pourtant des questions de mise en scène qui sont déjà une forme d’engagement, celui de l’artiste au service de sa création. Il n’y a alors plus qu’un petit pas à franchir pour se poser la question de l’engagement de l’artiste dans le monde. Avec Didier Balsaux, Directeur artistique des Royales Marionnettes ; Alain Moreau, Directeur du Tof théâtre ; Sara Amari, Thank You for Coming ; Charles Culot, auteur de “Nourrir l’humanité” ; Rachel Brahy, Coordinatrice scientifique de la Maison des Sciences de l’Homme Ulg ; … Modérateur : Antoine Laubin, Co-directeur éditorial de la revue Alternatives théâtrales Rapporteuse: Laurence Bertels [less ▲]

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See detailStreamlining NCA independence in reforming Regulation 1/2003: time to take incongruent accountability realities (more) seriously?
Van Cleynenbreugel, Pieter ULg

Scientific conference (2017, April 28)

This presentation analyses argues that the Commission’s reform suggestions aimed at streamlining NCAs into independent administrative agencies appear to neglect this variety of accountability mechanisms ... [more ▼]

This presentation analyses argues that the Commission’s reform suggestions aimed at streamlining NCAs into independent administrative agencies appear to neglect this variety of accountability mechanisms underlying current NCA institutional organisation and functioning. Given that those mechanisms each harbour incongruent expectations regarding the organisation and functioning of independent NCAs, failure to acknowledge such incongruence may in practice lead to less effective competition law enforcement. Its purpose is therefore to uncover the different NCA independence perspectives underlying those accountability mechanisms and to look for legally sound ways to make them converge when designing or upgrading NCA independence in the context of the Regulation 1/2003 reform. [less ▲]

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