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See detailChallenges for the restoration of dry calcareous grasslands in quarries: does nature need help?
Pitz, Carline ULg; Piqueray, Julien; Harzé, Mélanie ULg et al

Conference (2015, August 26)

In order to maximize the biodiversity potential of dry calcareous grasslands in former quarries two options are available to managers: (i) allow species to spontaneously recolonize the site, (ii ... [more ▼]

In order to maximize the biodiversity potential of dry calcareous grasslands in former quarries two options are available to managers: (i) allow species to spontaneously recolonize the site, (ii) implement technical support for ecosystem restoration. This study aimed at characterizing the spontaneous communities established in dry area of unexploited quarries and at comparing communities encountered to the succession panel of dry grasslands. To evaluate the ecological succession in quarries, three successional stages where defined: (i) less than three years; (ii) three to 20 years; and (iii) more than 20 years after exploitation. For each successional stage, six parcels were selected and 20 1m2 plots were randomly marked in each parcel. All selected parcels presented dry grasslands abiotic conditions: filtering and stony soils and south orientation. During the 2014 vegetation period, percentage cover of higher plant species was recorded in each plot. Explaining environmental variables including coordinates, altitude, slope (degrees), soil depth, exposure, maximum vegetation height, bare ground cover, moss cover, and shrub cover (%) were measured. Our main results showed that, over decades of time, the ecological succession in dry area of unexploited quarries does not approach a typical formation of dry calcareous grassland. Most recolonizations tended to form meadows communities, except for three sites belonging to a specific landscape context. Potential implications for future quarries restoration will be discussed. [less ▲]

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See detailChallenges in identifying the beneficiaries of the poverty reduction strategy in Northern Mountains of Vietnam: the case of Xuan Phong and Tu Ly communes, Hoa Binh Province
Mai, Lan Phuong ULg; Lebailly, Philippe ULg

in International Journal of Research In Social Sciences (2013), 3(3), 38-51

In many developing countries, poverty alleviation programs have been implemented since the 1980’s and 1990’s, and will be continued into the next decades. The emerging question is why “poverty issues” ... [more ▼]

In many developing countries, poverty alleviation programs have been implemented since the 1980’s and 1990’s, and will be continued into the next decades. The emerging question is why “poverty issues” still exist for such a long time and do challenge not only the Vietnamese government but also many countries all over the world. One may ask if poverty reduction strategies, applied in Vietnam and other countries, are suited to the real poverty situation, and if they are sustainable. This paper is based on a research to investigate the nature of government’s interventions as a “poverty reduction strategy”, at Tu Ly and Xuan Phong communes in Hoa Binh province. Vietnam’s official poverty identification method and participatory poverty assessment of people are applied. This study does claim that the currently “inappropriate definition of poverty” is one of keys problems at the roots of the lack of obvious success of the ongoing strategy. [less ▲]

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See detailChallenges in stakeholders participation in research
Mairiaux, Philippe ULg

Scientific conference (2012, June 20)

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See detailChallenges in teaching architectural morphogenesis
Stals, Adeline ULg; Elsen, Catherine ULg; Jancart, Sylvie ULg et al

in Proceedings of the 3rd International Conference for Design Education Researchers (2015)

Reviewing the successive cognitive, operative and constructive models of architectural morphogenesis through time, the paper first recalls students and teachers in architecture how designers started ... [more ▼]

Reviewing the successive cognitive, operative and constructive models of architectural morphogenesis through time, the paper first recalls students and teachers in architecture how designers started experimenting digital design to reach self-generative, morphogenetic morphologies. Generally referred to as “non-standard architecture”, this innovative morphogenesis favours a new kind of spatial and architectural audacity but also generates three types of rupture: i) a rupture between form and structure; ii) a rupture in terms of process continuity and iii) a rupture in terms of multi-disciplinary collaboration. We consequently have to acknowledge the fact that, at a current state, non-standard architecture still struggles in terms of self-coherency and implementation, leaving a large amount of projects at their virtual, embryonic state especially in pedagogical contexts. We believe the challenge resides in overcoming the overly simplistic and reductionist appeal of purely formal and visual non-standard architecture: these morphologies should, on the contrary, be intrinsically defined by their form and structure relationship. We suggest such reconciliation should occur during the early stages of architectural education. Two experimental instruments, that perhaps constitute interesting renewed pedagogical models, are reported in this paper and we conclude by listing the remaining challenges when it comes to the teaching of architectural morphogenesis. [less ▲]

Detailed reference viewed: 160 (35 ULg)
See detailChallenges in the field of economic and financial crime in Europe and the US
Ligeti, Katalin; Franssen, Vanessa ULg

Book published by Hart (in press)

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See detailChallenges in the thermodynamic description of mixtures of complex molecules
Pfennig, Andreas ULg

Conference (2007, October 29)

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See detailChallenges in treatment of acromegaly patients
Beckers, Albert ULg

Scientific conference (2012, April 20)

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See detailChallenges of Semantic 3D City Models: A Contribution of the COST Research Action TU0801
Billen, Roland ULg; Cutting-Decelle, Anne-Françoise; Métral, Claudine et al

in International Journal of 3-D Information Modeling (2015), 4(2), 68-76

This technical paper is a contribution to the identification of current challenges of semantic 3D city models. They are presented in four parts, namely 3D enriched city models and their connection with ... [more ▼]

This technical paper is a contribution to the identification of current challenges of semantic 3D city models. They are presented in four parts, namely 3D enriched city models and their connection with urban information models and smartcities, urban models integration, urban analyses and data. This work is an output of the COST Action TU0801 “Semantic Enrichment of 3D city models for sustainable urban development”. [less ▲]

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See detailChallenges of Sustainable and Commercial Aquaponics
Goddek, Simon; Delaide, Boris ULg; Mankasingh, Utra et al

in Sustainability (2015), 7

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See detailChallenging Combinatorial Problems
Crama, Yves ULg

Conference (2010, May 06)

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See detailChallenging land fragmentation thanks a mobile milking robot: Statement of 2 cases of implementation: Liège and Trevarez experimental farms
Brocard, Valérie; Dufrasne, Isabelle ULg; Lessire, Françoise ULg et al

in Conington, J; Klopcic, M; Lauridsen, C (Eds.) et al Book of abstracts of the 66th annual meeting of the European Federation of Animal Science (2015, September)

Cette présentation fait le point de l'expérience de l'utilisation de 2 robots mobiles, développés comme prototypes à la Ferme expérimentale de Trévarez et à l'Université de Liège

Detailed reference viewed: 26 (0 ULg)
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See detailChallenging ourselves: three benchmarks for nonlinear system identification
Schoukens, Maarten; Noël, Jean-Philippe ULg

Conference (2015, September)

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See detailChallenging regional psoriasis and ustekinumab biotherapy: impact of the patterns of disease.
Hermanns-Lê, Trinh ULg; Berardesca, Enzo; PIERARD, Gérald ULg et al

in Journal of Biomedicine & Biotechnology (2012), 2012

In some patients, psoriasis appears refractory to many treatments, particularly when the disease is confined to some specific body regions. In this respect, palmoplantar psoriasis and palmoplantar ... [more ▼]

In some patients, psoriasis appears refractory to many treatments, particularly when the disease is confined to some specific body regions. In this respect, palmoplantar psoriasis and palmoplantar pustulosis are possibly related conditions in their immunopathomechanisms involving Il-12, IL-23, and Th17. Nail psoriasis and scalp psoriasis are two other particular psoriasis manifestations. Accordingly, ustekinumab was tested in a few of these patients. The present paper is limited to peer-reviewed case reports. Data were not supported by bioinstrumental assessments and controlled trials. Overall, they are indicative of potential efficacy. The cost-effectiveness and the risk-benefit assessments merit further investigations. [less ▲]

Detailed reference viewed: 9 (2 ULg)
See detailLa Chambre de Commerce, d'Industrie et d'Agriculture de l'arrondissement de Verviers : deux cent ans au service d'une région et de ses entrepreneurs
Pasleau, Suzanne ULg; Schopp, Isabellle; Barbiere, Jean et al

Book published by Département Publications de la CCI de Liège et de Verviers (2005)

Detailed reference viewed: 44 (2 ULg)