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See detailFrom Newton's Fluxions to Virtual Microscopes
Bair, Jacques ULg; Henry, Valérie ULg

in Teaching Mathematics and Computer Science (2007), 5(2), 377-384

The method of fluxions was originally given by Newton in order to determine the tangent to a curve. In this note, we will formulate this method by the light of some modern mathematica tools.

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See detailFrom Non-invasive Site Characterization to Site Amplification: Recent Advances in the Use of Ambient Vibration Measurements.
Bard, P-Y; et al.; Havenith, Hans-Balder ULg

in Geotechnical, Geological and Earthquake Engineering : Earthquake Engineering in Europe (2010)

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See detailFrom Normal Business to Financial Crisis... and Back Again. An Illustration of the Benefits of Cassandre for Qualitative Analysis
Lejeune, Christophe ULg

in Forum: Qualitative Sozialforschung = Forum: Qualitative Social Research [FQS] (2011), 12(1), 19

Cassandre is a free open source text analysis software tool. It uses semi-automatic coding, based on the identification of markers, grouped into registers, which represent analysis categories. Studying ... [more ▼]

Cassandre is a free open source text analysis software tool. It uses semi-automatic coding, based on the identification of markers, grouped into registers, which represent analysis categories. Studying the causes of the financial crisis makes it possible to construct a series of registers (responsibility, negligence, domino effect, change and return to normal). Cross-referencing these registers reveals contrasting views (positive and negative) of the economic, political and financial spheres. These conceptions vary both according to how they explain the phenomenon and the measures that they advocate (ranging from the development of new methods to "getting back to normal"). The example of the financial crisis is an opportunity to discuss the benefits of semi-automatic coding and determine the limitations that are likely to impact negatively on the analysis. [less ▲]

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See detailFrom obesity to diabetes: why, when and who?
Scheen, André ULg

in Acta Clinica Belgica (2000), 55(1), 9-15

Obesity is considered as the most important risk factor for type 2 diabetes. We will briefly discuss why does obesity predispose to diabetes, when does diabetes occur in obese subjects and who among obese ... [more ▼]

Obesity is considered as the most important risk factor for type 2 diabetes. We will briefly discuss why does obesity predispose to diabetes, when does diabetes occur in obese subjects and who among obese individuals is particularly prone to develop diabetes. Obesity, especially intraabdominal adiposity, is associated with increased FFA plasma concentrations which exert a major negative effect on insulin sensitivity at both muscular and hepatic sites. Various metabolic, haemodynamic and hormonal theories have been proposed to explain insulin resistance in obese subjects. A specific role of TNF-alpha has been recently suggested. However, besides insulin resistance, defective insulin secretion is a prerequisie for the development of overt type 2 diabetes. Both lipotoxicity and glucotoxicity may initiate and perpetuate a vicious circle responsible for the metabolic deterioration. Diabetes occurs as a late phenomenon in obesity and is preceded by years of impaired glucose tolerance. The progression to diabetes is heralded by an inability of the B cell to maintain its previously high rate of insulin secretion in response to glucose in face of insulin resistance. This propensity to develop type 2 diabetes may be genetically determined and/or triggered by environmental factors. The evolution from obesity to diabetes represents a continuum that progresses through different phases in which defects in both insulin action and insulin secretion play a critical interaction and must be looked at in concert. [less ▲]

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See detailFrom obesity to type 2 diabetes.
Scheen, André ULg

in Acta Clinica Belgica. Supplementum (1992), 14

Obesity is a well-known risk factor for the development of non-insulin-dependent diabetes mellitus (NIDDM). Both insulin resistance and concomitant B-cell dysfunction are necessary for the development of ... [more ▼]

Obesity is a well-known risk factor for the development of non-insulin-dependent diabetes mellitus (NIDDM). Both insulin resistance and concomitant B-cell dysfunction are necessary for the development of NIDDM. Insulin resistance, probably genetically determined but worsened by obesity, appears to be the primary defect that leads to impaired glucose tolerance. However, B-cell dysfunction plays a critical role during progressive deterioration from mild impaired glucose tolerance to severe NIDDM. [less ▲]

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See detailFrom One Loop To Another: From Minimalism To Indie Rock
Levaux, Christophe ULg

Conference (2013, October 05)

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See detailFrom oxides to selenides and sulfides: The richness of the CdI2 type crystallographic structure for thermoelectric properties
S, Hébert; W, Kobayashi; Y, Bréard et al

in Physica Status Solidi A. Applications and Materials Science (2013), 210(1), 69-81

In this paper, we show how the thermoelectric properties can be modified in crystallographic structures based on the CdI2 type layer, by changing the block layers between these CdI2 type layers or by ... [more ▼]

In this paper, we show how the thermoelectric properties can be modified in crystallographic structures based on the CdI2 type layer, by changing the block layers between these CdI2 type layers or by going from oxides to selenides and sulfides. In the case of oxides, the unique properties generated in these structures will be demonstrated in Bi-based misfit compounds. By combining Hall effect, resistivity, and Seebeck coefficients in single crystals of this family, the importance of doping and of spin and orbital degeneracy term on the Seebeck coefficient will be shown. From this single crystal investigation, the power factor at 300 K is found to be unexpectedly constant as a function of doping. To further enhance the power factor and thus ZT, it is necessary to modify either the block layer or to perform anionic substitutions. By going from oxides to selenides and sulfides, the decrease of the ionic character can induce a decrease of electrical resistivity. Compared to oxides, the properties can generally be described in a more classical way using Boltzmann transport theory. For these materials, the critical parameter is then thermal conductivity and this quantity can be decreased as shown here by intercalating Cu between the layers (CuxTiS2), or by making solid solution such as TiS2 − xSex. These two approaches will be described here, leading to ZT close to 0.5 and 0.4, at 800 and 700 K, respectively. [less ▲]

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See detailFrom palaeosols to carbonate mounds: facies and environments of the middle Frasnian platform in Belgium
Da Silva, Anne-Christine ULg; Boulvain, Frédéric ULg

in Geological Quarterly (2004), 48(3), 253-265

This paper provides a synthetic sedimentological overview of the middle Frasnian carbonate platform of Belgium and associated carbonate mounds. Carbonate mounds started usually in a relatively deep, quiet ... [more ▼]

This paper provides a synthetic sedimentological overview of the middle Frasnian carbonate platform of Belgium and associated carbonate mounds. Carbonate mounds started usually in a relatively deep, quiet subphotic environment with a crinoid-coral-sponge assemblage, then reached the fair-weather wave base and the euphotic zone with an algal-microbial facies. The upper parts of the mounds are characterised by lateral facies differentiation with the algal-microbial facies protecting a central sedimentation area with a dendroid stromatoporoids facies and fenestral limestone. The lateral facies reflect different kinds of input of reworked mound material in the proximal area, from transported fine-grained sediment to coarse-grained fossil debris. On the platform, environments range from the outer zone (crinoidal facies) to stromatoporoid-dominated biostromes and to the lagoonal area of the inner zones (subtidal facies with Amphipora floatstone, algal packstone, intertidal mudstone and laminated peloidal packstone and palacosols). These facies are stacked in metre-scale shallowing-upward cycles. The larger scale sequential organisation corresponds to transgressions and regressions, whose cycles are responsible for differentiating a lower open-marine biostrome dominated unit from an upper lagoonal unit. The last regression-transgression cycle, responsible for the platform-scale development of lagoonal facies, can be correlated with an atoll-stage evolution of the carbonate mounds belonging to the Lion Member. [less ▲]

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See detailFrom paradigm dynamics towards landscape ecology ontogenesis
Bogaert, Jan ULg

in Farina, A. (Ed.) Ecology, Cognition and Landscape: Linking Natural and Social Systems. Landscape series 11. (2009)

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See detailFrom polyester grafting onto POSS nanocage by ring-opening polymerization to high performance polyester/POSS nanocomposites
Goffin, Anne-Lise; Duquesne, Emmanuel; Raquez, Jean-Marie et al

in Journal of Materials Chemistry (2010), 20

Polyester-grafted polyhedral oligomeric silsesquioxane (POSS) nanohybrids selectively produced by ring-opening polymerization of epsilon-caprolactone and L,L-lactide (A.-L. Goffin, E. Duquesne, S. Moins ... [more ▼]

Polyester-grafted polyhedral oligomeric silsesquioxane (POSS) nanohybrids selectively produced by ring-opening polymerization of epsilon-caprolactone and L,L-lactide (A.-L. Goffin, E. Duquesne, S. Moins, M. Alexandre, Ph. Dubois, Eur. Polym. Journal, 2007, 43, 4103) were studied as ‘‘masterbatches’’ by melt-blending within their corresponding commercial polymeric matrices, i.e., poly(epsilon-caprolactone) (PCL) and poly(L,L-lactide) (PLA). For the sake of comparison, neat POSS nanoparticles were also dispersed in PCL and PLA. The objective was to prepare aliphatic polyester-based nanocomposites with enhanced crystallization behavior, and therefore, enhanced thermo-mechanical properties. Wide-angle X-ray scattering and transmission electron microscopy attested for the dispersion of individualized POSS nanoparticles in the resulting nanocomposite materials only when the polyester-grafted POSS nanohybrid was used as a masterbatch. The large impact of such finely dispersed (grafted) nanoparticles on the crystallization behavior for the corresponding polyester matrices was noticed, as evidenced by differential scanning calorimetry analysis. Indeed, well-dispersed POSS nanoparticles acted as efficient nucleating sites, significantly increasing the crystallinity degree of both PCL and PLA matrices. As a result, a positive impact on thermo-mechanical properties was highlighted by dynamic mechanical thermal analysis. [less ▲]

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See detailFrom propaganda to commemoration: reworking the national narrative.
Hamers, Jérémy ULg; Van Cauwenberge, Geneviève ULg

in Rethinking History (2014), 18(3), 423-437

In Belgium, memories of the World War I have contributed to the production and the perpetuation of a fractured national narrative. While the official narration emphasizes the unity of the Belgian state ... [more ▼]

In Belgium, memories of the World War I have contributed to the production and the perpetuation of a fractured national narrative. While the official narration emphasizes the unity of the Belgian state and glorifies the heroism of Belgian soldiers acting as a unified force against the German invader, a counter-narrative presents the Flemish soldiers as victims who were used as cannon fodder by the French-speaking commanding elite. In the immediate postwar period, newsreels largely reinforced the image of a national unity during the Great War. Ten years later, however, cinema took an active part in the production of a counter-memory. Met onze jogens aan den IJzer/With Our Troops on the Yser (Clemens De Landtsheer, 1928), a Flemish film, is a key work in this regard. This article first examines the narratives and formal strategies the film resorts to in order to forcefully deconstruct the patriotic narrative and to forge a ‘Flamingant,’ Flemish activist collective memory. It subsequently analyzes more recent Frenchspeaking documentary film projects aiming to commemorate the memory of the Great War. Lacking any overt problematization of their relationship to the Flemish separatist narrative, the documentaries are still shaped by it. Indeed, they either attempt to overcome it by reinforcing Belgium’s sense of national identity or to counterbalance it by putting forward a regional narrative that specifically revives the French-speaking Belgians’ memory of the War. [less ▲]

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See detailFrom RE-211 to RE-123. How to control the final microstructure of superconducting single-domains
Cloots, Rudi ULg; Koutzarova, T.; Mathieu, J.-P. et al

in Superconductor Science and Technology (2005), 18(3), 9-23

This paper reviews the usual techniques for producing YBCO-type single-domains and the microstructure of the as-obtained samples. The problems of seed dissolution and parasite nucleations are discussed in ... [more ▼]

This paper reviews the usual techniques for producing YBCO-type single-domains and the microstructure of the as-obtained samples. The problems of seed dissolution and parasite nucleations are discussed in detail. The formation of microstructural defects, such as pores and cracks, is examined. An important part of this review is devoted to the study of the influence of RE-211 particles (RE2BaCuO5 where RE denotes Y, Yb, Nd, Sm, Dy, Gd, Eu or a mixture of them. Generally Nd4Ba2Cu 2O10 is preferred to Nd2BaCuO5) for the microstructure and properties of RE-Ba-Cu-O single-domains. Pushing/trapping theory is described in order to explain the spatial distribution of RE-211 particles in the RE-123 ((RE)Ba2Cu3O7-δ) monoliths. The formation of RE-211-free regions is discussed. Different ways to limit the RE-211 coarsening are reviewed. Microstructural defects in the RE-123 matrix caused by the RE-211 particles are presented. It is also shown that RE-211 particles play a significant role in the mechanical properties of single-domain samples. We finish this review by discussing the infiltration and growth process as a good technique to control the microstructure. © 2005 IOP Publishing Ltd. [less ▲]

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See detailFrom Reactive Intervention to Proactive Prevention: The evolution of Occupational Dysphonia.
Epstein, Ruth; Remacle, Angélique ULg; Morsomme, Dominique ULg

in American Speech-Language-Hearing Association (2011), 21

Voice clinicians long have been aware of the concept of professional voice users: individuals who work in professions that have a higher incidence and increased risk for voice disorders. This realization ... [more ▼]

Voice clinicians long have been aware of the concept of professional voice users: individuals who work in professions that have a higher incidence and increased risk for voice disorders. This realization, coupled with the documented impact of work-related dysphonia on the economy, has resulted in a growing international interest in developing occupational health benchmarks for voice use, similar to other standards developed for work-related factors such as noise-induced hearing loss. In this article, we review current perspectives and examine some issues related to occupational vocal health. [less ▲]

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