Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
See detailApproaches for retrieving abundances of methane isotopologues in the frame of the AGACC project from ground-based FTIR observations performed at the Jungfraujoch
Duchatelet, Pierre ULg; Mahieu, Emmanuel ULg; Demoulin, Philippe ULg et al

Poster (2007, April)

This work has been performed within the frame of AGACC(http://www.oma.be/AGACC/Home.html), a contribution to the Belgian Scientific Support for a Sustainable Development. The project intends to make an ... [more ▼]

This work has been performed within the frame of AGACC(http://www.oma.be/AGACC/Home.html), a contribution to the Belgian Scientific Support for a Sustainable Development. The project intends to make an advanced exploitation of existing ground-based remote-sensing measurements for a selection of atmospheric species that play an important role in the chemistry of the atmosphere and that have a direct or indirect impact on climate. Target species include -among others- lower tropospheric aerosols, H2O, HDO, CH4, HCN and CO. The instrumentation includes 3 types of spectrometers (FTIR, MAXDOAS and Brewer) and one CIMEL sun photometer. These instruments are operated at 3 different sites (Jungfraujoch, Ile de la Réunion and Uccle) and most of them are affiliated with the Network for the Detection of Atmospheric Composition Change (NDACC, formerly NDSC - http://www.ndacc.org), a group dedicated to performing high-quality long-term observations. This contribution will deal with the detection of the isotopologues of methane, a species released to the atmosphere by natural processes (e.g. wetlands, termites) as well as by anthropogenic activities (e.g. fossil fuel exploitation, rice agriculture, biomass burning, etc). Due to its high warming potential and its relatively long chemical lifetime, atmospheric methane is a major greenhouse gas. Methane also affects climate by influencing tropospheric ozone and stratospheric water. The cycle of methane is complex and a thoroughly study of the sources and sinks of its main isotopologue, as well as the other isotopic species, is necessary to characterize it. Isotopic ratios are also useful to differentiate between various sources of atmospheric methane. To study the vertical distribution of methane isotopologues from the high resolution FTIR spectra recorded by the University of Liège instrument at the International Scientific Station of the Jungfraujoch (ISSJ; 46.5°N, 8.0°E, 3580m a.s.l., Swiss Alps), we have selected several 13CH4 lines distributed in the so-called InSb (1-5 µm) and MCT (2-16 µm) spectral ranges. A set of four microwindows has also been selected for the study of CH3D. Using the SFIT-2 v3.91 algorithm, vertical column abundances as well as low-resolution vertical distributions have been retrieved, adjusted from an a priori profile defined on a 41 layers scheme and derived from ACE-FTS space observations. The information content and first preliminary retrieval results will be presented. [less ▲]

Detailed reference viewed: 234 (1 ULg)
Peer Reviewed
See detailApproaches of organizational effectiveness applied to social enterprises
Mouchamps, Hugues ULg

Conference (2013, October 25)

This speech aims to address two theoretical challenges to which every scholar interested in the performance of social enterprises is confronted: the problem of defining what performance exactly is and the ... [more ▼]

This speech aims to address two theoretical challenges to which every scholar interested in the performance of social enterprises is confronted: the problem of defining what performance exactly is and the integration of the complexity inherent to social enterprises in the definition of performance (Speckbacher, 2003; Meadows and Pike, 2010; Samples and Austin, 2009; Polonsky and Grau, 2008). Our point is that the performance literature does not currently provide satisfying answers to these challenges. The first challenge identified is the confusion in the literature surrounding the definition of organizational performance (Quinn & Rohrbaugh, 1983). Performance scholars contributed to this confusion by each using an own definition of performance unrelated to any wider theoretical framework or by even bypassing the definition issue (Campbell, 1977). As they rarely share common definitions of performance, the accumulation of a body of common knowledge remains illusionary. In any case, performance scholars stick to isolated definitions and hardly recognize that multiple contingent definitions of performance can coexist in a consistent framework. The second challenge is closely related to the first one as it also concerns the definition of performance. For social enterprises, the performance definition step is an essential issue because, unlike for-profit corporations often do, relying only on straightforward performance indicators such as financial ratios would not be sufficient. Therefore they have to work on with a more complex definition of performance, which forces them to deepen the definition issue even more carefully. These challenges are addressed in the two sections of this paper. The first challenge is tackled in the first section of the paper, in which we compare the relative advantages of two bodies of literature likely to serve as basis for the definition of performance for social enterprises. This first section concludes with the relevance of rejuvenating an old body of literature, namely “organizational effectiveness” , which is likely to provide answers to the confusion plaguing the definition issue in the performance literature. Based on that theoretical finding, we develop a second section in which we review the OE literature to deal with the second challenge. This body of literature can potentially offer strong theoretical bases to integrate the complexity of social enterprises, except that the interrelationships between the existing OE approaches have never been explicitly stressed up to now. Therefore we address this research gap by setting up a framework articulating the existing OE approaches, which can open the way to integrate the complexity of social enterprises. [less ▲]

Detailed reference viewed: 53 (7 ULg)
Full Text
Peer Reviewed
See detailApproaches to handling incomplete data in family-based association testing
Van Steen, Kristel ULg; Laird, N. M.; Markel, P. et al

in Annals of Human Genetics (2007), 71(Pt 2), 141-51

The high throughput of data arising from the complete sequence of the human genome has left statistical geneticists with a rich and extensive information source. The wide availability of software and the ... [more ▼]

The high throughput of data arising from the complete sequence of the human genome has left statistical geneticists with a rich and extensive information source. The wide availability of software and the increase in computing power has improved the possibilities to access and process such data. One problem is incompleteness of the data: unobserved or partially observed data points due to technical reasons or reasons associated with the patient's status or erroneous measurements of phenotype or genotype, to name a few. When not properly accounted for, these sources of incompleteness may seriously jeopardize the credibility of results from analyses. In this paper we provide some perspectives on the occurrence and analysis of different forms of incomplete data in family-based genetic association testing. [less ▲]

Detailed reference viewed: 12 (2 ULg)
Full Text
Peer Reviewed
See detailApproaches to synthesize carbon-supported platinum-based electrocatalysts for proton-exchange membrane fuel cells
Maillard, Frédéric; Job, Nathalie ULg; Chatenet, Marian

in Suib, Steven (Ed.) New and future developments in catalysis. Batteries, hydrogen storage and fuel cells (2013)

Detailed reference viewed: 37 (4 ULg)
Peer Reviewed
See detailApproaches to the optimal navigation organization on the inland waterway network
Marchal, Jean ULg; Zhang, Z. M.

in Procceedings of the First Symposium on Operation Research with Application in Engineering, Technology and Management (ISORA’95) (1995)

Detailed reference viewed: 15 (4 ULg)
Full Text
Peer Reviewed
See detailApproaches to unravel the pathophysiological background of unexplained perinatal mortality in dairy cows
Taverne, M. A. M.; van der Weijden, G. C.; Jonker, F. H. et al

in Reproduction in Domestic Animals (2007), 42(Suppl. 2), 64

Detailed reference viewed: 30 (1 ULg)
Full Text
Peer Reviewed
See detailApproaching field tuned quantum criticality in CeIn3-xSnx
Silhanek, Alejandro ULg; Zocco, D.; Harrison, N. et al

in Physica B: Condensed Matter (2006), 378-80

We report on the magnetic field evolution of the Neel temperature T-N in the heavy electron system CeIn3-xSnx (x = 0 and 0.3), as determined by specific heat, magnetocaloric effect, and electrical ... [more ▼]

We report on the magnetic field evolution of the Neel temperature T-N in the heavy electron system CeIn3-xSnx (x = 0 and 0.3), as determined by specific heat, magnetocaloric effect, and electrical transport measurements. For the stoichiometric compound, T-N is fully suppressed at H-c similar to 65 T, whereas for x = 0.3 the critical field extrapolates to H-c similar to 30 T. An increasing Sommerfeld coefficient gamma, obtained above T-N, as field increases is observed and could be related to the a putative quantum critical point at H-c. (c) 2006 Published by Elsevier B.V. [less ▲]

Detailed reference viewed: 37 (1 ULg)
See detailApproaching the true prevalence of pituitary tumors
Beckers, Albert ULg; Adam, C.; Ciccarelli, A. et al

in ENEA congress : Napoli, April 2004 (2004, April)

Detailed reference viewed: 12 (0 ULg)
See detailApproaching the true prevalence of pituitary tumors
Beckers, Albert ULg

Scientific conference (2004, April)

Detailed reference viewed: 16 (0 ULg)
See detailApproaching the true prevalence of pituitary tumors
Beckers, Albert ULg

Scientific conference (2004, April)

Detailed reference viewed: 13 (0 ULg)
See detailApproaching the true prevalence of pituitary tumors
Beckers, Albert ULg; Ciccarelli, A.; Daly, Adrian ULg et al

in 12th International Congress of Endocrinology - Abstract book (2004)

Detailed reference viewed: 10 (0 ULg)
Full Text
See detailApproccio al paesaggio - ISALL
Occhiuto, Rita ULg

in Marini, Sara (Ed.) OLTRE IL GIARDINO. Dessiner sur l'herbe 2006 (2007, October)

Detailed reference viewed: 21 (2 ULg)
Full Text
See detailApproccio all'artrite settica nel vitello
Sartelet, Arnaud ULg; Touati, Kamal ULg

in Summa. Animali da Reddito (2010), 5(7), 7-12

Septic arthritis is the most frequently diagnosed orthopedic pathology in calves; it is difficult to treat and causes irreversible lesions. With a correct diagnosis it is possible to provide farmers with ... [more ▼]

Septic arthritis is the most frequently diagnosed orthopedic pathology in calves; it is difficult to treat and causes irreversible lesions. With a correct diagnosis it is possible to provide farmers with the right therapy, medical or more often surgical, according to the single case needs. [less ▲]

Detailed reference viewed: 52 (6 ULg)
Full Text
See detailApproccio all'intussuscepzione nella specie bovina
Sartelet, Arnaud ULg; Lamain, Guillaume ULg; Touati, Kamal ULg

in Summa. Animali da Reddito (2010), 5(1), 19-24

Intussusception is the invagination of a bowel segment in another one. Some authors classify this pathology as sparadic, whilst others think is one of the main causes of bowel obstruction in bovines. The ... [more ▼]

Intussusception is the invagination of a bowel segment in another one. Some authors classify this pathology as sparadic, whilst others think is one of the main causes of bowel obstruction in bovines. The aim of this article is to help vets to make a diagnosis as accurate as possible, together with an appropriate prognosis and therapy. [less ▲]

Detailed reference viewed: 35 (7 ULg)
Full Text
Peer Reviewed
See detailUn approccio semiotico dello sguardo fotografico: due impronte dell'Iran contemporaneo
Fontanille, Jacques; Shaïri, Hamid-Reza; Dondero, Maria Giulia ULg

in Dondero, Maria Giulia; Basso Fossali, Pierluigi (Eds.) Semiotica della fotografia. Investigazioni teoriche e pratiche di analisi (2006)

Detailed reference viewed: 39 (1 ULg)
Full Text
Peer Reviewed
See detailUn approccio sociolinguistico allo studio dell’emigrazione campana in provincia di Liegi (Belgio)
Moreno, Paola ULg

in Di Salvo, Margherita; Moreno, Paola; Sornicola, Rosanna (Eds.) Multilinguismo in contesto migratorio. Metodologia e progetti di ricerca sulle dinamiche linguistiche degli italiani all'estero (2014, January)

Detailed reference viewed: 58 (6 ULg)
See detailUne approche cognitive de la démence : Implications pour l'évaluation et la prise en charge des patients déments
Van der Linden, Martial ULg; Collette, Fabienne ULg; Juillerat, Anne-Claude

in Albaret, J. M.; Aubert, E. (Eds.) Vieillissement et psychomotricité (2001)

Detailed reference viewed: 98 (12 ULg)