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See detailQualité en chirurgie orthopédique
KURTH, William ULg

Scientific conference (2017, May 18)

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See detailL’influence normative de la Chine en Amérique centrale: quels enjeux stratégiques ?
Wintgens, Sophie ULg

Conference (2017, May 18)

La République populaire de Chine (Chine) est aujourd’hui devenue un partenaire commercial incontournable, un important pourvoyeur d’investissements directs étrangers et un grand fournisseur de prêts ... [more ▼]

La République populaire de Chine (Chine) est aujourd’hui devenue un partenaire commercial incontournable, un important pourvoyeur d’investissements directs étrangers et un grand fournisseur de prêts financiers pour un nombre croissant de pays d’Amérique du Sud. Cette tendance s’observe également de plus en plus en Amérique centrale. L’accroissement de ses échanges économiques et commerciaux avec le Costa Rica, membre du Système d’intégration centraméricain (SICA) et premier pays centraméricain à avoir signé un accord de libre-échange avec Pékin, va de pair avec l’imposition des normes économiques et politiques dont sa politique commerciale internationale est porteuse. Ce constat pose dès lors la question du défi stratégique que représente cette influence normative chinoise pour les normes exportées par l’UE en Amérique centrale. Afin de répondre à cette question, cette communication se propose d’analyser la portée normative de la politique commerciale de la Chine envers l’Amérique centrale, afin de voir si elle est porteuse d’un projet politico-économique régional comparable au modèle d’intégration et de gouvernance régionale déployé par l’Europe communautaire dans le sous-continent. [less ▲]

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See detailAller au spectacle
Brahy, Rachel ULg

Conference (2017, May 18)

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See detailImplementation of SFC for the quality control of pharmaceuticals
Dispas, Amandine ULg; Andri, Bertyl ULg; Lebrun, Pierre ULg et al

Conference (2017, May 17)

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See detailRencontre avec Pascal Matthey
Crucifix, Benoît ULg

Speech/Talk (2017)

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See detailL'interpellation stigmatisante comme élément de construction identitaire: le cas "Django Unchained"
Wintgens, Caroline ULg

Conference (2017, May 17)

La polémique apparue autour du film Django Unchained de Quentin Tarantino (2012) permet d’approcher la question de la représentation du stigmate. Mon étude portant sur cette polémique et sur les arguments ... [more ▼]

La polémique apparue autour du film Django Unchained de Quentin Tarantino (2012) permet d’approcher la question de la représentation du stigmate. Mon étude portant sur cette polémique et sur les arguments y étant mobilisés a montré que c’est la représentation d’éléments issus de la culture afro-américaine, ayant participé à la construction d’une identité pour les individus porteurs d’un stigmate ethnique, qui est particulièrement mise en cause. La polémique devient dès lors le lieu d’une resignification des attributs liés au stigmate et d’une réaffirmation de la culture de résistance élaborée autour de celui-ci par ceux qui en sont porteurs. Le terme Nigger et sa présence excessive dans le film ont notamment été relevés par de nombreux internautes. C’est dans ce cadre que nous approcherons la question toujours centrale de l’interpellation stigmatisante, en tant qu’elle semble à la fois devenir le lieu d’une réaffirmation identitaire et permettre l’émergence d’une « réponse habilitante » (Butler, 2008). [less ▲]

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See detailA Journey Through Julia: A dynamic and fast language
Cuvelier, Thibaut ULg

Speech/Talk (2017)

Usually, dynamic programming languages (like Python, R, or MATLAB) are quite slow when executed, which causes performance problems in many applications. Julia is a blossoming language, both dynamic and ... [more ▼]

Usually, dynamic programming languages (like Python, R, or MATLAB) are quite slow when executed, which causes performance problems in many applications. Julia is a blossoming language, both dynamic and fast, fully open source, with a syntax that is very similar to that of MATLAB. This talk presents briefly Julia and its ecosystem. [less ▲]

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See detailDefining thermal comfort boundaries for heating and cooling demand estimation in Iran's urban settlements
Roshan, GhR.; Farrokhzad, M.; Attia, Shady ULg

in Building & Environment (2017), 121

Iran has diverse climate variability, comfort boundaries for each geographic region must be defined in order to present current architectural design recommendations and proper mechanical systems design to ... [more ▼]

Iran has diverse climate variability, comfort boundaries for each geographic region must be defined in order to present current architectural design recommendations and proper mechanical systems design to meet building's heating and cooling energy demand. Therefore, two components of the temperature and relative humidity of 148 stations with the longest common statistical period of twenty years (1994–2014), which have been in daily scale were selected to calibrate and redefine the thermal boundary conditions in Iran. Givoni chart was used to define and visualize the bioclimatic conditions in buildings. The results of this study indicate that only 18% of the 148 stations days, falls in the thermal comfort bioclimatic conditions. After calibration of the base comfort temperature, we found that the upper threshold of this component varies from at least 22.62 °C for Ardebil to 25.94 °C for Dorudzan station and the low threshold of this component belongs to Ardebil with at least 20.13 °C up to its maximum value with 22 °C which belongs to Dorudzan. Spatial distribution of cooling and heating days show that their maximum threshold has been for cores in Northeastern half of Iran, Iran's Western half and some Central parts of Iran and the minimum threshold of these two components belongs to the beaches of north and south of the country. The findings present updated thermal comfort boundaries that can be used by architects, engineers and policy makers to achieve, in turn, more energy efficient homes and high quality indoor and outdoor living environments. [less ▲]

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See detailMatières premières et environnement - Défis pour le développement des compétences en Afrique Centrale
Pirard, Eric ULg

Scientific conference (2017, May 16)

Historique des programmes de formation que l'ULiège a mis en place à destination de l'Afrique dans le domaine des ressources minérales. Obstacles rencontrés à la mise en oeuvre de certains projets et ... [more ▼]

Historique des programmes de formation que l'ULiège a mis en place à destination de l'Afrique dans le domaine des ressources minérales. Obstacles rencontrés à la mise en oeuvre de certains projets et défis qui nous attendent. Perception des stratégies propres à l'espace francophone dans une dynamique de numérisation et de mondialisation tous azimuts. [less ▲]

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See detailEvoluer avec les étudiants
Younes, Nathalie; Detroz, Pascal ULg

Scientific conference (2017, May 16)

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See detailFish introductions, newt decline and paedomorph extinction
Denoël, Mathieu ULg

Scientific conference (2017, May 16)

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See detailEffects of isolated versus combined learning enactments in an online course
Verpoorten, Dominique ULg; Westera, Wim; Specht, Marcus

in International Journal of Technology Enhanced Learning (2017), 9(2), 169-185

In a controlled experiment on the effects of frequent and local digital annotations, 137 volunteers covered an online course under three possible conditions: no/free/question-based digital annotations ... [more ▼]

In a controlled experiment on the effects of frequent and local digital annotations, 137 volunteers covered an online course under three possible conditions: no/free/question-based digital annotations. Results show no difference in performance between groups when annotation behaviour is considered in isolation. However, analyses conducted within treatments provide indications of a positive impact on performance when annotation rates are taken into consideration, and coupled with other enactments tracked in the course. Combined in engagement profiles (Learning DNAs), these enactments suggest that what makes active learning efficient might be an ongoing crisscrossing between a firstorder learning activity (the study of the course) and a series of second order activities, such as making notes. Students who manage to coordinate these activities at a higher rate perform better. This observation opens a line of reasoning about what determines the quality of a mental engagement in a learning task, in terms of balance and rotation of cognitive and metacognitive operations. [less ▲]

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See detailLe manuel de grammaire latine de Dosithée : quelle méthode d'apprentissge ?
Rochette, Bruno ULg

Conference (2017, May 15)

Contrairement aux autres manuels de grammaire latine destinés aux hellénophones, comme ceux de Charisius, Diomède et Priscien qui travaillent dans la pars Orientis pour des hellénophones, l’Ars grammatica ... [more ▼]

Contrairement aux autres manuels de grammaire latine destinés aux hellénophones, comme ceux de Charisius, Diomède et Priscien qui travaillent dans la pars Orientis pour des hellénophones, l’Ars grammatica de Dosithée est accompagnée d’une traduction grecque. La présence de cette traduction, qui ne concerne toutefois pas toute la grammaire, mais seulement environ la moitié du texte, singularise ce manuel dans la tradition des artes, même si nous ne pouvons exclure que d’autres traités grammaticaux du même type n’aient pas été accompagnés d’une traduction grecque que nous n’aurions pas conservée. Quoi qu’il en soit, le statut de cette traduction est assez difficile à établir. Essentiellement deux questions se posent à son sujet : quel est son auteur, est-ce Dosithée lui-même ou un utilisateur plus tardif (éventuellement dans le monde occidental), et à quoi sert-elle ? Il apparaît clairement que le grec doit aider à la compréhension du latin, non le remplacer. La traduction grecque n’a donc pas une vocation à l’autonomie. Elle n’a de sens qu’en relation avec le latin. La traduction semble se réduire au fur et à mesure que l’on avance dans la grammaire. Il semble que Dosithée attende de l’utilisateur de la grammaire qu’il ait de moins en moins besoin d’aide à mesure qu’il progresse dans l’apprentissage. J’analyse la nature du grec de Dosithée en vue de mieux comprendre la méthode d’apprentissage mise en œuvre dans ce manuel. Bibliographie Bonnet G., Dosithée. Grammaire latine, Paris, CUF, 2005. --, La version grecque de l’Ars de Dosithée, dans L. Basset-Fr. Biville-B. Colombat-P. Swiggers-A. Wouters (éds), Bilinguisme et terminologie grammaticale gréco-latine, Leuven-Paris-Dudley, 2007, p. 191-199. Dickey E., The Authorship of the Greek Version of Dositheus’ Grammar and What it Tells Us about the Grammar’s Original Use, dans R. Ferri-A. Zago (eds), The Latin of the Grammarians. Reflections about Language in the Roman World, Turnhout, 2016, p. 205-235. --, Learning Latin. The Ancient Way. Latin Textbooks from the Ancient World, Cambridge, 2016. Lenoble M. – Swiggers P. – Wouters P., L’enseignement grammatical entre grec et latin : le manuel de Dosithée, P. Desmet-L. Jooken-P. Schmitter-P. Swiggers (eds), The History of Linguistic and Grammatical Praxis. Proceedings of the XIth International Colloquium of the Studienkreis « Geschichte der Sprachwissenschaft » (Leuven, 2nd – 4th July, 1998), Leuven-Paris-Sterling, 2000, p. 3-22. Reichamnn V., Römische Literatur in griechischer Übersetzung, Leipzig, 1943. J. Tolkiehn J., Dosithei Ars Grammatica, Leipzig, 1913. [less ▲]

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See detailTopological invariants, diametral dimension, and one related question
Demeulenaere, Loïc ULg

Scientific conference (2017, May 15)

Diametral dimension is a topological invariant for topological vector spaces which appears to be useful to characterize some classical classes of locally convex spaces (Schwartz, nuclear spaces). In this ... [more ▼]

Diametral dimension is a topological invariant for topological vector spaces which appears to be useful to characterize some classical classes of locally convex spaces (Schwartz, nuclear spaces). In this talk, we first introduce the notion of Kolmogorov's diameters to define the diametral dimension of a topological vector space. We also consider some simple properties of these concepts. Then, we focus on an open question concerning the equality of the diametral dimension with one of its variants. [less ▲]

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See detailEtude descriptive et relationnelle des facteurs de risque d’infécondité et d’infertilité des vaches laitières au sud Viet Nam
Nguyen, Kien Cuong ULg

Doctoral thesis (2017)

Increasing milk production is a key issue for Vietnam. Improving milk production involves controlling direct or indirect factors responsible for this. These factors are genetics, feed, environment, and ... [more ▼]

Increasing milk production is a key issue for Vietnam. Improving milk production involves controlling direct or indirect factors responsible for this. These factors are genetics, feed, environment, and reproductive performance. The identification and control of individual or collective factors responsible for reproductive performance is therefore an important step in improving milk production. The general objective of our study is to describe the milk and reproductive performances of dairy smallholding in Vietnam and to analyze the effects of risk factors on reproductive performance. The specific objectives are:(1) to describe the physiological and pathological characteristics of genital tract of culled dairy cows in dairy smallholding; (2) to specify the fecundity and fertility of heifers and dairy cows of small dairy farms; (3) to identify the postpartum (PP) reproductive disorders of cows in dairy smallholders (4) to analyze the effects of individual and environmental risk factors on the reproductive performance of heifers and cows; and (5) to analyze the risk factors for the postpartum (PP) reproductive disorders of cows. The first work of our study was conducted from February to August 2012 on 507 culled crossbred Holstein Friesian (HF) x Lai Sind (LS) dairy cows at two slaughterhouses in HCMC. Age and body condition score (BCS) of cows were determined prior to slaughter. A visual examination of vulva region was also performed to identify the presence of eventual discharges. Then, vaginoscopic examination was performed to determine the presence of discharges and pneumovagina or even urovagina. After slaughter, the uterus was incised to examine the contents. Oviducts were observed to identify abnormalities. The ovaries were collected to evaluate eventual structures (number and diameter of follicles, corpus luteum - CL and cysts) using an ultrasound (KX5200, 6.5 MHz linear probe). The results of this study revealed some important pathological characteristics of examined cows. Nearly half (44.4%) of examined cows had a BCS lower than 2.5. The prevalence of pneumovagina and urovagina was 33.1% and 14.7%, respectively; age and BCS have had a significant effect on the prevalence of these pathologies. The frequencies of vaginal discharges and abnormal uterine contents were 12.1% and 5.4%, respectively. 226 out of 507 examined cows (44.6%) were in anœstrus. The frequencies of functional pathological anœstrus, cystic, pyometral and gestation were 37.3%, 2.0%, 0.4% and 4.9%, respectively. Type 0 and I anœstrus have been more often observed in cows with low BCS and in cows aged less than 6 years. The results of the first work reinforced us in the need to set up specific monitoring of small dairy farms at HCMC. The total of 232 heifers and 244 cows (261 lactations) of 35 small farms in Cu Chi district, HCMC were observed during the years 2013 and 2014. The animals are kept permanently indoors. Their diet consists of fodder (Pennisetum purpureum or natural grass and rice straw), concentrates and by-products (spent grain and cassava waste). Each farm was monitored monthly for reproduction of heifers and cows by transrectal palpation, ultrasound (KX5200, 6.5 MHz linear probe) and vaginoscopy. Reproductive data (dates and type of calving, calf sex, complications, results of clinical examinations, date of heat, date of insemination), milk production (daily average milk yield per cow), BCS and weight of heifers were updated at each visit. The reproductive performance was assessed by fecundity and fertility parameters. The fecundity of heifers and cows was calculated by (1) birth to conception interval (heifers) (or age at conception – AC) or calving to conception interval (cows) (or days open - DO), (2) birth to first service (heifers) (or age at first service – AFS) or calving to first service (cows) (or waiting period - WP) and (3) days between first and last service (DFLS). The fertility of heifers and cows was determined by (1) number of services per conception (NSC), (2) conception rate at first service (CRFS) and (3) overall conception rate (CR). The prevalence of PP disorders (dystocia, retained placenta or RP, clinical endometritis, urovagina, cysts and anœstrus) was also determined. The monthly temperature and humidity index (THI) for the years 2013 - 2014 has been calculated. The body weight and average daily gain of heifer at 6, 12 and 16 months of age were 159, 280 and 351 kg and 690, 646 and 705 g/day respectively. The average daily milk yield per cow was 11.6 (± 0.5) kg. The average duration of lactation was 368 (± 100) days. The overall mean of AFS, DFLS and AC of heifers was 479 (± 80), 38 (± 80) and 517 (± 114) days, respectively. The NSC, CR and CRFS was 1.8 (± 1.4), 55% and 58%, respectively. A significant decrease in AFS and AC according to the year of birth and a significant increase in AFS with a heavier weight (> 320 kg) at first AI were observed. CRFS of heifers inseminated in 2013 was higher than that of heifers inseminated in 2014 (64% vs 50%, P <0.05). The monthly CR in heifers was negatively correlated with the monthly THI during observed period (P = 0.003). The overall mean of WP, DFLS, DO of cows was 109 (±52), 133 (±114) and 242 (±129), respectively. The mean for NSC, CR and CRFS was 4.3 (±2.7), 23 % and 14 %. A significant decrease in WP, DFLS, DO and NSC with an increase according to the year of calving was observed in this study. Calving occurring during rainy season was accompanied by a significant increase in WP. The presence of PP disorders was accompanied by an increase in WP (108 vs 98 days), DO (249 vs 216 days) and NSC (4.7 vs 3.9). A decrease in BCS between calving and day 60th (C60) and between day 60th and 120th PP resulted in a significant increase in WP and DO. The decrease in BCS between C60 also leaded to a significant reduction in CRFS (8 vs 18%, P <0.05). The year and season of insemination, and the BCS at insemination had a significant effect on the NSC and CR of cows. There was a negative correlation between monthly CR in cows and THI (r = -0645, P = 0.02). A total of 353 calvings and PP periods of 302 cows were observed. The prevalence of dystocia, RP, clinical endometritis, urovagin, PP anestrus and ovarian cysts was 24.4%, 16.4%, 19.2%, 5.6%, 49.9% and 6.3%, respectively. The primiparous cows had 1.7 times more risk of dystocia than the multiparous cows (29.9% vs 20.4%, P <0.05). Cows that calved in 2014 or in rainy season had 6 or 2.1 times more than risk of dystocia than cows that calved in 2013 (P <0.001) or in dry season (P <0.01), respectively. The frequency of RP was higher in 2014 than in 2013 (21.8% vs. 11.7%, P <0.01). Cows that calved in 2014 or in rainy season showed more frequently clinical endometritis than cows that calved in 2013 (OR = 3.03, P = 0.001) or in dry season (OR = 3.78, P <0.001). Dystocia (OR = 2.8; P = 0.003) and RP (OR = 4.7, P = 0.001) were the major risk factors of clinical endometritis. The difficult calving, clinical endometritis and insufficient BCS at calving (< 3) or day 30th in PP were accompanied by an increase in risk of type I anestrus. In conclusion, the reproductive performance was satisfactory for heifers, but poor for cows. The infertility and PP anestrus are the major factors responsible for this situation. Heat stress and under-nutrition are the major causes of infertility and PP anestrus. Moreover, the frequency of reproductive disorders (dystocia, RP, clinical endometritis and PP anestrus) is also important in this study. Dystocia and RP are the risk factors for clinical endometritis and this disorder also had a negative effect on fertility and resumption of ovarian activity in cows. [less ▲]

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See detailLes bovins : en faut-il encore dans nos prairies et nos assiettes ?
Beckers, Yves ULg

Conference given outside the academic context (2017)

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