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See detailHow teacher teach : analysis of verbal interaction in the classroom
de Landsheere, Gilbert ULg

in Classroom Interaction Newsletter (1971), décembre

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See detailHow teachers teach : analysis of verbal interaction in the classroom
de Landsheere, Gilbert ULg

in Classroom Interaction Newsletter (1971), 7(1), 40-56

In this paper, the system of interaction analysis developed in the Department of Educational Research of the University of Liege is first presented. Then, five research projects completed by the author or ... [more ▼]

In this paper, the system of interaction analysis developed in the Department of Educational Research of the University of Liege is first presented. Then, five research projects completed by the author or under his auspices are abstracted. [less ▲]

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See detailHow the *H-particle* unravels the quark dynamics
Stancu, Floarea ULg; Pepin, S.; Glozman, L Ya

in Physical Review. D : Particles and Fields (1998), D57

It is shown that the short-range part of the Goldstone boson exchange interaction between the constituent quarks, which explains baryon spectroscopy and the short-range repulsion in the NN system, induces ... [more ▼]

It is shown that the short-range part of the Goldstone boson exchange interaction between the constituent quarks, which explains baryon spectroscopy and the short-range repulsion in the NN system, induces a strong short-range repulsion in the flavour-singlet state of the $S=-2$ system with $J^P=0^+$. This suggests that a deeply bound H-particle should not exist. We compare our approach with other models employing different hyperfine interactions between quarks in the nonperturbative regime of QCD. [less ▲]

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See detailHow the became the tallest of the world
Beckers, Albert ULg

Scientific conference (2017, March 09)

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See detailHow the debate on the protection of IDPs could inform the debate on the protection of environmental migrations
Gemenne, François ULg; Brücker, Pauline

Conference (2012, December 06)

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See detailHow the DNA damage response determines the fate of HTLV-1 Tax-expressing cells
Boxus, Mathieu ULg; Willems, Luc ULg

in Retrovirology (2012), 9(2),

How the Human T lymphotropic virus type 1 (HTLV-1) Tax protein stimulates proliferation while triggering cell cycle arrest and senescence remains puzzling. There is also a debate about the ability of Tax ... [more ▼]

How the Human T lymphotropic virus type 1 (HTLV-1) Tax protein stimulates proliferation while triggering cell cycle arrest and senescence remains puzzling. There is also a debate about the ability of Tax to activate or inhibit the DNA damage response. Here, we comment on these different activities and propose a conceptual rationale for the apparently conflicting observations. [less ▲]

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See detailHow the financial crash of October 1997 could have been predicted
Vandewalle, Nicolas ULg; Ausloos, Marcel ULg; Boveroux, P. et al

in European Physical Journal B -- Condensed Matter (1998), 4(2), 139-141

From the analysis of (closing value) stock market index like the Dow Jones Industrial average and the S&P500 it is possible to observe the precursor of a so-called crash. This is shown on the Oct. 1987 ... [more ▼]

From the analysis of (closing value) stock market index like the Dow Jones Industrial average and the S&P500 it is possible to observe the precursor of a so-called crash. This is shown on the Oct. 1987 and Oct. 1997 cases. The data analysis indicates that the index divergence has followed twice a "universal"; behavior, i.e. a logarithmic dependence, superposed on a well defined oscillation pattern. The prediction of the crash date is remarkable and can be done two months in advance. In the spirit of phase transition phenomena, the economic index is said to be analogous to a signal signature found in a two dimensional fluid of vortices. [less ▲]

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See detailHow the genomic environment of the HTLV-1 provirus impacts on clone fitness
Gillet, Nicolas ULg; Malani, Nirav; Berry, Charles et al

Conference (2010, May)

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See detailHow the People of Butembo (RDC) were Chosen to Embody ‘the New Congo’: Or What the Appearance of a Poster in a City’s Public Places can Teach about its Social Tissue
Geenen, Kristien ULg

in International Journal of Urban and Regional Research (2012), 36(3), 448-461

In this article, I translate local narratives about one particular event into a reading of a city as a whole. The city concerned is Butembo, a secondary city in the North Kivu province (DRC). The incident ... [more ▼]

In this article, I translate local narratives about one particular event into a reading of a city as a whole. The city concerned is Butembo, a secondary city in the North Kivu province (DRC). The incident relates to the appearance of a foreign flower in the late 1950s. This water hyacinth — named ‘Congo ya Sika’, which means ‘the New Congo’— caused severe damage to the waterways of the Belgian Congo, and the colonial authorities mobilized the population in an effort to eradicate the plague. Pamphlets and posters were spread, with the request to destroy the pictured flower when spotted. People of Butembo reacted in a most particular way to the appearance of these posters in their city, ascribing the Congo ya Sika flower mythical proportions right from the start. In their interpretation, the appearance of the flower was a sign that ‘the new Congo’would rise in their town, endowing their place exclusively with a particular force. I scrutinize the myth’s origin and analyse its social meaning, in an effort to gain a better understanding of Butembo’s society. Throughout my analysis, special attention is paid to (self) representation, and to noise stuck to colonial messages. [less ▲]

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See detailHow the reference values for serum parathyroid hormone concentration are (or should be) established?
Souberbielle, J.-C.; Brazier, F.; Piketty, M.-L. et al

in Journal of Endocrinological Investigation (in press)

Well-validated reference values are necessary for a correct interpretation of a serum PTH concentration. Establishing PTH reference values needs recruiting a large reference population. Exclusion criteria ... [more ▼]

Well-validated reference values are necessary for a correct interpretation of a serum PTH concentration. Establishing PTH reference values needs recruiting a large reference population. Exclusion criteria for this population can be defined as any situation possibly inducing an increase or a decrease in PTH concentration. As recommended in the recent guidelines on the diagnosis and management of asymptomatic primary hyperparathyroidism, PTH reference values should be established in vitamin D-replete subjects with a normal renal function with possible stratification according to various factors such as age, gender, menopausal status, body mass index, and race. A consensus about analytical/pre-analytical aspects of PTH measurement is also needed with special emphasis on the nature of the sample (plasma or serum), the time and the fasting/non-fasting status of the blood sample. Our opinion is that blood sample for PTH measurement should be obtained in the morning after an overnight fast. Furthermore, despite longer stability of the PTH molecule in EDTA plasma, we prefer serum as it allows to measure calcium, a prerequisite for a correct interpretation of a PTH concentration, on the same sample. Once a consensus is reached, we believe an important international multicentre work should be performed to recruit a very extensive reference population of apparently healthy vitamin D-replete subjects with a normal renal function in order to establish the PTH normative data. Due to the huge inter-method variability in PTH measurement, a sufficient quantity of blood sample should be obtained to allow measurement with as many PTH kits as possible. [less ▲]

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See detailHow The Semiotic Square Came
Badir, Sémir ULg

in Beziau, Jean-Yves; Payette, Gillman (Eds.) The Square of Opposition. A General Framework for Cognition (2012)

In this paper, I intend to give a presentation of the diagram known in semiotics as “the semiotic square”. More precisely, I would like to retrace semiotic square’s origins and early history until its ... [more ▼]

In this paper, I intend to give a presentation of the diagram known in semiotics as “the semiotic square”. More precisely, I would like to retrace semiotic square’s origins and early history until its “official” presentation in a dictionary of semiotics. One would expect that the logical square should have taken a great part in the invention of the semiotic diagram. However, the trajectory of the semiotic square was more fluctuating and heterogeneous than what is expected a priori, coming under the influence not only of logic but also of other sources of knowledge, as anthropology and linguistics. Shaped at the very same moment by a diagrammatical representation the semiotic square allows an underdetermination of the relations of its objects. The object becomes properly structural simply when the square displayed that structure. So the determinations of the structure can be renewed by the way of theoretical discussion around the square itself, constructing and, soon, deconstructing, a concrete geometrical shape. And this is the usual way semioticians think. [less ▲]

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See detailHow the Δ13C of the soil materials influence the isotopic signature of the soil CO2 efflux in a beech temperate forest and a rain tropical forest
Longdoz, Bernard ULg; Epron, Daniel; Ngao, Jérôme et al

in Geophysical Research Abstracts (2006)

Carbon isotopic signature has been measured at the different stages of the soil CO2 efflux production in trenched and control plots to improve the knowledge about the physical and biochemical processes of ... [more ▼]

Carbon isotopic signature has been measured at the different stages of the soil CO2 efflux production in trenched and control plots to improve the knowledge about the physical and biochemical processes of the soil respiration. All the measurements of _13C have been performed using a mass-spectrometer.We have compared the isotopic signatures of the CO2 going out of the soil, the CO2 of the soil atmosphere, the organic carbon in the material that could be considered as the main soil respiration sources (live and dead roots, soil organic matter, aerial litter) and the CO2 produced by these sources in incubation jars. The aims of this study were to evaluate the possibilities to combine these different data sets to estimate the partitioning of soil respiration between its autotrophic and heterotrophic components, and to get more insight into potential fractionation during biochemical or diffusion processes. Measurements were conducted in a beech forest located at Hesse in the North East of France (site equipped with a flux tower and belonging to the CarboEurope network) and in a neotropical primary rainforest located at Paracou (French Guiana). Preliminary results show first a very tenuous difference between CO2 isotopic signatures of efflux coming from the trenched and control plots and, secondly, _13C significant divergences between bulk organic material and CO2 produced in the corresponding incubation jars. Our ability to use this kind of data for partitioning soil respiration into its main components will be discussed. [less ▲]

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See detailHow they became the human face of climate change. Research and policy interactions in the birth of the ‘environmental migration’ concept.
Gemenne, François ULg

in Piguet, Etienne; Pécoud, Antoine; De Guchteneire, Paul (Eds.) Migration and Climate Change (2011)

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See detailHow Tightly Linked Are Pericopsis elata (Fabaceae) Patches to Anthropogenic Disturbances in Southeastern Cameroon?
Bourland, Nils; Cerisier, François; Daïnou, Kasso ULg et al

in Forests (2015), 6(2), 293-310

While most past studies have emphasized the relationships between specific forest stands and edaphic factors, recent observations in Central African moist forests suggested that an increase of slash-and ... [more ▼]

While most past studies have emphasized the relationships between specific forest stands and edaphic factors, recent observations in Central African moist forests suggested that an increase of slash-and-burn agriculture since 3000–2000 BP (Before Present) could be the main driver of the persistence of light-demanding tree species. In order to examine anthropogenic factors in the persistence of such populations, our study focused on Pericopsis elata, an endangered clustered timber species. We used a multidisciplinary approach comprised of botanical, anthracological and archaeobotanical investigations to compare P. elata patches with surrounding stands of mixed forest vegetation (“out-zones”). Charcoal samples were found in both zones, but were significantly more abundant in the soils of patches. Eleven groups of taxa were identified from the charcoals, most of them also present in the current vegetation. Potsherds were detected only inside P. elata patches and at different soil depths, suggesting a long human presence from at least 2150 to 195 BP, as revealed by our charcoal radiocarbon dating. We conclude that current P. elata patches most likely result from shifting cultivation that occurred ca. two centuries ago. The implications of our findings for the dynamics and management of light-demanding tree species are discussed. [less ▲]

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