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See detailIntermédialité visuelle
Badir, Sémir ULg; Roelens, Nathalie

in Visible (2008), 2007/3

Detailed reference viewed: 4 (0 ULg)
See detailIntermediaries, transport costs and interlinked transaction
Tharakan, Joseph ULg

Conference (2011, November)

Detailed reference viewed: 9 (0 ULg)
See detailIntermediaries, transport costs and interlinked transaction
Tharakan, Joseph ULg

Conference (2014, April 29)

Detailed reference viewed: 8 (1 ULg)
See detailIntermediaries, transport costs and interlinked transaction
Tharakan, Joseph ULg

Conference (2014, March 28)

Detailed reference viewed: 8 (0 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg

Conference (2011, October)

Detailed reference viewed: 6 (0 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Tharakan, Joseph ULg

Conference (2014, January 28)

Detailed reference viewed: 8 (0 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg

Scientific conference (2011, March)

Detailed reference viewed: 4 (0 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Tharakan, Joseph ULg

Conference (2013, July)

Detailed reference viewed: 3 (1 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg; Tharakan, Joseph ULg

E-print/Working paper (2011)

Transport costs play a key role in agricultural markets in developing countries and are one of the causes of poverty amongst farmers that are geographically isolated. Another characteristic of ... [more ▼]

Transport costs play a key role in agricultural markets in developing countries and are one of the causes of poverty amongst farmers that are geographically isolated. Another characteristic of agricultural markets is that they often involve interlinked transactions. However, the existing theoretical literature on interlinked transactions does not take into account the existence of transport costs. This paper develops a model of input-output interlinked contracts between geographically dispersed farmers and a trader, whether this trader is for-profit or non-profit. We derive implications of imposing either uniform or mill pricing policies, as opposed to spatial price discrimination. Impact on profit, farmers' income, level of production, social welfare and regional disparities are investigated. [less ▲]

Detailed reference viewed: 26 (1 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg

Scientific conference (2011, January)

Detailed reference viewed: 3 (0 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg

Conference (2011, December)

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Peer Reviewed
See detailIntermediate basal cells of the prostate: In vitro and in vivo characterization
Garraway, Levi; Lin, Douglas; Signoretti, Sabina et al

in Prostate (2003), 55(3), 206-218

BACKGROUND. Progenitor cells within the prostate basal layer may play important roles in differentiation and carcinogenesis; however, prostate stem cell populations remain uncharacterized. METHODS ... [more ▼]

BACKGROUND. Progenitor cells within the prostate basal layer may play important roles in differentiation and carcinogenesis; however, prostate stem cell populations remain uncharacterized. METHODS. Immunohistochemical and immunoblot analyses were used to characterize prostate epithelial cells (PrEC), a commercially available prostate basal cell isolate. RESULTS. Proliferating PrECs exhibited immunophenotypic characteristics most consistent with basal cells, but during senescence PrECs up-regulated androgen receptor (AR) mRNA, p27, and low-molecular-weight cytokeratin (LMWCK) expression, suggestive of partial differentiation. PrECs also stained strongly for involucrin, which marked a subset of intermediate prostate basal cells in vivo. Basal hyperplasia consisting of involucrin-positive cells was prevalent in prostate tissue from androgen-ablated patients, and formed epithelial clusters flanked by involucrin-negative basal and luminal monolayers. Cultivation of PrECs on matrigel together with androgen-treated stromal conditioned media resulted in dense aggregates, with a peripheral rim of basal-like cells expressing p63 and basal cytokeratins. CONCLUSIONS. PrEC represents an epithelial population whose basal characteristics are modified in response to matrigel, stromal factors, and senescence, consistent with a transient amplifying population. These cells may derive from a previously unrecognized, involucrin-positive subset present in vivo. (C) 2003 Wiley-Liss, Inc. [less ▲]

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See detailAn intermediate in the evolution of superfast sonic muscles.
Mok, H.; Parmentier, Eric ULg; Chiu, H. et al

in Frontiers in Zoology (2011), 8

Background Intermediate forms in the evolution of new adaptations such as transitions from water to land and the evolution of flight are often poorly understood. Similarly, the evolution of superfast ... [more ▼]

Background Intermediate forms in the evolution of new adaptations such as transitions from water to land and the evolution of flight are often poorly understood. Similarly, the evolution of superfast sonic muscles in fishes, often considered the fastest muscles in vertebrates, has been a mystery because slow bladder movement does not generate sound. Slow muscles that stretch the swimbladder and then produce sound during recoil have recently been discovered in ophidiiform fishes. Here we describe the disturbance call (produced when fish are held) and sonic mechanism in an unrelated perciform pearl perch (Glaucosomatidae) that represents an intermediate condition in the evolution of super-fast sonic muscles. Results The pearl perch disturbance call is a two-part sound produced by a fast sonic muscle that rapidly stretches the bladder and an antagonistic tendon-smooth muscle combination (part 1) causing the tendon and bladder to snap back (part 2) generating a higher-frequency and greater-amplitude pulse. The smooth muscle is confirmed by electron microscopy and protein analysis. To our knowledge smooth muscle attachment to a tendon is unknown in animals. Conclusion The pearl perch, an advanced perciform teleost unrelated to ophidiiform fishes, uses a slow type mechanism to produce the major portion of the sound pulse during recoil, but the swimbladder is stretched by a fast muscle. Similarities between the two unrelated lineages, suggest independent and convergent evolution of sonic muscles and indicate intermediate forms in the evolution of superfast muscles. [less ▲]

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See detailIntermediate integer programming representations using value disjunctions
Köppe, Matthias ULg; Louveaux, Quentin ULg; Weismantel, Robert

in Discrete Optimization (2008), 5(2), 293-313

We introduce a general technique to create an extended formulation of a mixed-integer program. We classify the integer variables into blocks, each of which generates a finite set of vector values. The ... [more ▼]

We introduce a general technique to create an extended formulation of a mixed-integer program. We classify the integer variables into blocks, each of which generates a finite set of vector values. The extended formu- lation is constructed by creating a new binary variable for each generated value. Initial experiments show that the extended formulation can have a more compact complete description than the original formulation. We prove that, using this reformulation technique, the facet descrip- tion decomposes into one “linking polyhedron” per block and the “aggre- gated polyhedron”. Each of these polyhedra can be analyzed separately. For the case of identical coefficients in a block, we provide a complete description of the linking polyhedron and a polynomial-time separation algorithm. Applied to the knapsack with a fixed number of distinct coeffi- cients, this theorem provides a complete description in an extended space with a polynomial number of variables. Based on this theory, we propose a new branching scheme that analyzes the problem structure. It is designed to be applied in those subproblems of hard integer programs where LP-based techniques do not provide good branching decisions. Preliminary computational experiments show that it is successful for some benchmark problems of multi-knapsack type. [less ▲]

Detailed reference viewed: 56 (9 ULg)
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See detailIntermediate integer programming representations using value disjunctions
Louveaux, Quentin ULg

Conference (2006, January)

We introduce a general technique for creating an extended formulation of a mixed-integer program. We classify the integer variables into blocks, each of which generates a finite set of vector values. The ... [more ▼]

We introduce a general technique for creating an extended formulation of a mixed-integer program. We classify the integer variables into blocks, each of which generates a finite set of vector values. The extended formulation is constructed by creating a new binary variable for each generated value. Initial experiments show that the extended formulation can have a more compact complete description than the original formulation. We prove that, using this reformulation technique, the facet description decomposes into one “linking polyhedron” per block and the “aggregated polyhedron”. Each of these polyhedra can be analyzed separately. For the case of identical coefficients in a block, we provide a complete description of the linking polyhedron and a polynomial-time separation algorithm. Applied to the knapsack with a fixed number of distinct coefficients, this theorem provides a complete description in an extended space with a polynomial number of variables. On the basis of this theory, we propose a new branching scheme that analyzes the problem structure. It is designed to be applied in those subproblems of hard integer programs where LP-based techniques do not provide good branching decisions. Preliminary computational experiments show that it is successful for some benchmark problems of multi-knapsack type. [less ▲]

Detailed reference viewed: 13 (0 ULg)
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See detailIntermediate report on the development of the Geer hydrological model (surface and subsurface water) for climatic change scenario on that sub-catchment
Goderniaux, Pascal ULg; Orban, Philippe ULg; Dassargues, Alain ULg et al

Report (2007)

In the framework of Workpackage BASIN R3 Meuse, the Hydrology Group of the University of Liège (Belgium) is developing a hydrological model of the Geer sub-catchment, in order to assess climate change ... [more ▼]

In the framework of Workpackage BASIN R3 Meuse, the Hydrology Group of the University of Liège (Belgium) is developing a hydrological model of the Geer sub-catchment, in order to assess climate change impacts on groundwater reserves. This report describes the calculation code used, the general hypotheses chosen to develop the model, the conceptual model, the climate change scenarios and the final objectives of the study. [less ▲]

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See detailLes intermittences du corps filmique: Pathologies et blessures de l’image dans la pratique contemporaine du found footage
Thonon, Jonathan ULg

in André, Emmanuelle; Lioult, Jean-Luc (Eds.) Penser la création audiovisuelle (2008)

Depuis un demi-siècle et de manière exponentielle ces vingt dernières années, le champ de l’art contemporain et celui du cinéma n’ont cessé d’engendrer des processus mutuels d’hybridation, par ... [more ▼]

Depuis un demi-siècle et de manière exponentielle ces vingt dernières années, le champ de l’art contemporain et celui du cinéma n’ont cessé d’engendrer des processus mutuels d’hybridation, par contamination(s), échange(s) et transfert(s), rendant à la fois tangible et poreuse la frontière qui semblait s’être définitivement érigée entre l’art de masse et l’art d’élite. Il est une pratique assez symptomatique de cette interrogation muséale qui naît de l’exposition de cinéma. Pratique historiquement ancrée dans cet espace plastique charnière que constitue le cinéma expérimental, le cinéma de found footage nous offre le terrain idéal qui nous permet, à la fois, de penser l’histoire (du cinéma et des formes cinématographiques) au moyen de films qui en constituent, en quelque sorte, la pensée en acte, mais aussi, au regard de l’histoire même de cette pratique et de son évolution et à partir d’objets contemporains qui en réactualisent la forme et le discours, de repenser le rapport « cinéma – art contemporain » à la lueur de formes filmiques renouvelées. [less ▲]

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See detail"Les intermittences du visible. Reprises de vue dans le cinéma expérimental américain"
Belloi, Livio ULg

in Recherches Anglaises et Nord-Américaines [= RANAM] (2012), 45

After a brief historical and theoretical survey of the found footage film tradition, this text discusses the issue of reprise in the field of contemporary experimental cinema, focusing on two films by ... [more ▼]

After a brief historical and theoretical survey of the found footage film tradition, this text discusses the issue of reprise in the field of contemporary experimental cinema, focusing on two films by American filmmaker Bill Morrison. In "The Death Train" (1993), Morrison takes up again three series of distinct images in a gesture that tends to foreground the mechanical dimensions of the cinematic spectacle. In "Decasia" (2002), the filmmaker capitalizes on fragments of decaying nitrate film, thus exploring film as materiality. However different they may seem, both works seem to address the same visual theme, that of visible intermittencies, in so far as they can be considered as an act of definition of a modernity ingrained in the very mechanics of the gaze. [less ▲]

Detailed reference viewed: 38 (6 ULg)
See detail"Les intermittences du visible. Reprises de vue dans le cinéma expérimental américain"
Belloi, Livio ULg

Scientific conference (2010, October 18)

Approche historique et théorique du procédé de la reprise de vue dans le cinéma expérimental américain, abordé à l'aune d'un schème structurant et particulièrement récursif : celui des intermittences du ... [more ▼]

Approche historique et théorique du procédé de la reprise de vue dans le cinéma expérimental américain, abordé à l'aune d'un schème structurant et particulièrement récursif : celui des intermittences du visible. [less ▲]

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See detailIntermittent bisphosphonate therapy in postmenopausal osteoporosis - Progress to date
Reginster, Jean-Yves ULg; Malaise, Olivier ULg; Neuprez, A. et al

in Drugs & Aging (2007), 24(5), 351-359

Bisphosphonates are the most widely prescribed drugs in osteoporosis today. They have unequivocally shown their ability to reduce fracture rate at the spine (alendronic acid, risedronic acid, ibandronic ... [more ▼]

Bisphosphonates are the most widely prescribed drugs in osteoporosis today. They have unequivocally shown their ability to reduce fracture rate at the spine (alendronic acid, risedronic acid, ibandronic acid) and at the hip (alendronic acid and risedronic acid). However, their dosage and administration procedures and the adverse reactions induced by their oral intake are responsible for low adherence. Therefore, intermittent regimens have been developed. Weekly alendronic acid and risedronic acid provide similar benefits, in terms of bone mineral density (BMD) and changes in biochemical markers, as those seen with their daily formulations. Ibandronic acid has been shown to reduce vertebral fractures when given intermittently. Ibandronic acid given orally monthly and intravenously every 2 or 3 months provides increases in BMD similar to the daily formulation. Yearly intravenous infusions of zoledronic acid are currently being evaluated for their ability to reduce fractures. If the efficacy and safety of bisphosphonates given at administration intervals longer than weekly are confirmed, this might significantly improve patient adherence and long-term outcomes of bisphosphonate treatment in postmenopausal osteoporosis. [less ▲]

Detailed reference viewed: 45 (11 ULg)