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Peer Reviewed
See detailLandslide hazard in the North Tanganyika - kivu rift zones: current knowledge and research perspective
Dewitte, Olivier; Albino, F; Delvaux, D et al

Poster (2013, November)

The North tanganyika – Kivu rift zones are areas naturally prone to landsliding where triggering and environmental factors that favour the occurrence of mass movement concentrate. In many places landslide ... [more ▼]

The North tanganyika – Kivu rift zones are areas naturally prone to landsliding where triggering and environmental factors that favour the occurrence of mass movement concentrate. In many places landslide hazard is very high, and anthropogenic factors such as land use change and urban expansion increase the sensibility to slope instability. From seismic to rainfall-induced mass movements we review the current knowledge of the various slope precesses and associated hazards that are present in these equatorial environments. A particular attention is given to urban areas such as Bukavu and Bujumbura where lanslide threat is particularly acute. Research perspectives on landslide inventorying, monitoring, and susceptibility and hazard assesment are presented. [less ▲]

Detailed reference viewed: 27 (2 ULg)
See detailLandslide risk analysis in the Mailuu-Suu valley (Kyrgyzstan) by means of remote sensing techniques
Danneels, Gaelle; Pirard, Eric ULg; Torgoev, Isakbek et al

in Geophysical Research Abstracts (2005)

Detailed reference viewed: 4 (0 ULg)
Peer Reviewed
See detailLandslide Susceptibility Mapping with Data Mining Methods—a Case Study from Maily-Say, Kyrgyzstan
Braun, A.; Fernandez-Steeger, T.; Havenith, Hans-Balder ULg et al

in Engineering Geology for Society and Territory-Volume 2 (2015)

Abstract: Multiple factors, such as geology, high mountain topography, seismic activity, climatic conditions and mining activities cause significant landslide hazard in the region around Maily-Say ... [more ▼]

Abstract: Multiple factors, such as geology, high mountain topography, seismic activity, climatic conditions and mining activities cause significant landslide hazard in the region around Maily-Say, Kyrgyzstan. To assess the landslide susceptibility a database containing landslide information and geological, morphological and hydrological parameters associated with landslide occurrence was established and analyzed with different data mining algorithms. The most promising results were achieved with an Artificial Neural ... [less ▲]

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See detailLandslide Susceptibility Zonation in case of deforestation in Northern Negros Natural Park (NNNP) - Philippines
Denis, Antoine ULg

Master's dissertation (2006)

The Philippines is one of the most severely deforested countries in Southeast Asia with around 7 percent remaining forest in 2005. Moreover, due to its geographic circumstances, it is one of the most ... [more ▼]

The Philippines is one of the most severely deforested countries in Southeast Asia with around 7 percent remaining forest in 2005. Moreover, due to its geographic circumstances, it is one of the most natural hazard prone countries in the world with frequent occurrence of earthquakes, volcanic eruptions and typhoons, resulting notably in an increasing occurrence of landslides and flash floods. This work focuses on the North Negros Island and especially the recently proclaimed Northern Negros Natural Park (NNNP) that is considered the largest remaining evergreen forest in Negros Island and one of the largest in the Central Philippines. Deforestation continues to be a threat for this forest. The fact that this forest is located in mountainous area and that, due to a very high land pressure, people always creep higher to cultivate the steep slopes of these mountains, increase the landslide susceptibility associated with this deforestation. As an answer to that situation, this research aimed two main objectives. In a first time a land cover map was produced through digital classification of a 2003 SPOT 5 satellite image focusing on attempt for forest types differentiation in NNNP. Given that conventional method using spectral characteristics of the image revealed to be unsuccessful for this differentiation, this was finally achieved with the use of elevation and the distance to river as classifiers. The land cover map produced has an overall accuracy of 89,2 %. In a second time, a Landslide Susceptibility Zonation (LSZ) model was designed and implemented in a Geographical Information System (GIS) environment. The nine selected landslide-controlling factors were built from raw data and then combined through Weighted Linear Combination (WLC).Two scenarios corresponding to a “stable forest scenario” and a “deforestation scenario” were modeled. The integration of the land cover map previously produced served successfully as the key factor that enabled to model the Landslide Susceptibility (LS) change due to potential deforestation in NNNP. A sensitivity analysis of the factors used for this modeling was realized by comparison with a “LSZ in case of deforestation” map based on the four main factors only (land cover, land cover change, slope and proximity to river). It appeared that, the LSZ model was not sensitive to the use of other factors than these four main ones. Finally, in order to give an idea of the reliability of the results, the LSZ maps were compared with a landslide inventory realized during the field survey in North Negros. Some limitations in the landslide inventory did not allow drawing pertinent conclusion from this comparison. In parallel and in order to evaluate the feasibility of integrating the land cover knowledge of local environmentalist into a GIS data base through field survey and 3D-GIS activity in a remote laboratory, a participatory 3D-GIS experience was attempted in Negros. Consistence of results between field and 3D-GIS laboratory experience validate this way of extracting land cover information, which could revealed useful for land cover identification of hardly accessible areas. [less ▲]

Detailed reference viewed: 126 (24 ULg)
Peer Reviewed
See detailLandslide Susceptibility, Hazard and Risk Mapping in Mailuu-Suu, Kyrgyzstan
Torgoev, Almazbek ULg; Havenith, Hans-Balder ULg

in Landslide Science and Practice (2013, October)

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Peer Reviewed
See detailLandslides in the Mailuu-Suu Valley, Kyrgyzstan - Hazards and impacts
Havenith, Hans-Balder ULg; Torgoev, I.; Meleshko, A. et al

in Landslides (2006), 3(2), 137-147

Mailuu-Suu is a former uranium mining area in Kyrgyzstan (Central Asia) at the northern border of the Fergana Basin. This region is particularly prone to landslide hazards and, during the last 50 years ... [more ▼]

Mailuu-Suu is a former uranium mining area in Kyrgyzstan (Central Asia) at the northern border of the Fergana Basin. This region is particularly prone to landslide hazards and, during the last 50 years, has experienced severe landslide disasters in the vicinity of numerous nuclear waste tailing dams. Due to its critical situation, the Mailuu-Suu region was and still is the target area for several risk assessment projects. This paper provides a brief review of previous studies, past landslide events and a discussion on possible future risk scenarios. Various aspects of landslide hazard and related impacts in the Mailuu-Suu Valley are analyzed in detail: landslide susceptibility, historical evolution of landslide activity, size-frequency relationship, river damming and flooding as well as impacts on inhabited areas and nuclear waste storage zones. The study was carried out with standard remote sensing tools for the processing of satellite imagery and the construction of digital elevation models (DEMs). The processed inputs were combined on a GIS platform with digital landslide distribution maps of 1962, 1977, and 2003, digitized geological and geographic maps, and information from landslide monitoring and geophysical investigation. As a result, various types of landslide susceptibility maps based on conditional analysis (CA) are presented as well as predictions of future landslide activity and related damming potential and their possible impact on the population. For some risk scenarios, remediation and prevention measures are suggested. [less ▲]

Detailed reference viewed: 53 (1 ULg)
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See detailLanduse change and future flood risk: the influence of micro-scale spatial patterns (FloodLand) - 1st progress report
Dewals, Benjamin ULg; Bruwier, Martin ULg; El Saeid Mustafa, Ahmed Mohamed ULg et al

Report (2014)

The goal of the project FloodLand is to investigate the complex interactions between landuse change and future flood risk. Landuse change is assumed to be mainly driven by population growth and socio ... [more ▼]

The goal of the project FloodLand is to investigate the complex interactions between landuse change and future flood risk. Landuse change is assumed to be mainly driven by population growth and socio-economic factors. It affects future flood risk by altering catchment hydrology as well as vulnerability in the floodplains; but the feedback effect of (the perception of) changes in flood hazard on landuse evolution is also considered. The research is based on a chain of modelling tools, which represent parts of the natural and human systems, including: landuse change modelling, transportation modelling as an onset for the estimation of indirect flood damage, continuous hydrological modelling (forced by precipitation and temperature data disturbed according to climate change scenarios), as well as efficient hydraulic modelling of inundation flow in the floodplains. Besides reproducing a broad spectrum of processes, the modelling approach spans over multiple scales, from the regional or catchment level down to the floodplain and building levels. This distinctive feature is reflected both within the individual models and through their combination involving fine-scale detailed analyses (or data) embedded within coarser models at a broader level. [less ▲]

Detailed reference viewed: 10 (7 ULg)
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See detailLanduse change and future flood risk: the influence of micro-scale spatial patterns (FloodLand) - 2nd progress report
Dewals, Benjamin ULg; Bruwier, Martin ULg; El Saeid Mustafa, Ahmed Mohamed ULg et al

Report (2014)

The goal of the project FloodLand is to investigate the complex interactions between landuse change and future flood risk. Landuse change is assumed to be mainly driven by population growth and socio ... [more ▼]

The goal of the project FloodLand is to investigate the complex interactions between landuse change and future flood risk. Landuse change is assumed to be mainly driven by population growth and socio-economic factors. It affects future flood risk by altering catchment hydrology as well as vulnerability in the floodplains; but the feedback effect of (the perception of) changes in flood hazard on landuse evolution is also considered. The research is based on a chain of modelling tools, which represent parts of the natural and human systems, including: landuse change modelling, transportation modelling as an onset for the estimation of indirect flood damage, continuous hydrological modelling (forced by precipitation and temperature data disturbed according to climate change scenarios), as well as efficient hydraulic modelling of inundation flow in the floodplains. Besides reproducing a broad spectrum of processes, the modelling approach spans over multiple scales, from the regional or catchment level down to the floodplain and building levels. This distinctive feature is reflected both within the individual models and through their combination involving fine-scale detailed analyses (or data) embedded within coarser models at a broader level. [less ▲]

Detailed reference viewed: 12 (10 ULg)
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Peer Reviewed
See detailLand´e factors for even-parity 5pnp and 5pnf J = 1, 2 levels along the Rydberg series of Sn I
Xu, J.; You, S.; Zhang, Y. et al

in Journal of Physics : B Atomic Molecular & Optical Physics (2009), 42

Land´e g-factors have been measured by time-resolved laser-induced fluorescence and Zeeman quantum-beat techniques for the even-parity levels of the J = 1 5pnp (n = 11–13, 15–19) and J = 2 5pnp (n = 11–13 ... [more ▼]

Land´e g-factors have been measured by time-resolved laser-induced fluorescence and Zeeman quantum-beat techniques for the even-parity levels of the J = 1 5pnp (n = 11–13, 15–19) and J = 2 5pnp (n = 11–13, 15–19, 31, 32), 5pnf (n = 4, 5, 9–19, 22, 23) Rydberg series and for all the 5p7p and 5p8p perturbing levels of neutral tin. A two-colour two-step excitation scheme was used in the experiment. The experimental results have been compared with theoretical g-values obtained by the multichannel quantum defect theory and the relativistic Hartree–Fock theory, respectively. In most cases, the theoretical values agree well with the experimental data. [less ▲]

Detailed reference viewed: 15 (0 ULg)
Peer Reviewed
See detailLe langage à l'envers
Steinmetz, Rudy ULg

in Louvain : Revue Mensuelle de l'Université Catholique de Louvain et de l'Association des Anciens et Amis de l'UCL (1999)

Detailed reference viewed: 7 (0 ULg)
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See detailLe langage caché des plantes : Rôle des composés organiques volatils de la rhizosphère.
Fiers, Marie ULg

Scientific conference (2010, November 09)

Detailed reference viewed: 36 (4 ULg)
See detailLe langage de l'enfant : développement et évaluation
Comblain, Annick ULg

in Piérart, Bernadette (Ed.) Introduction à la psychologie de l'enfant (2005)

Detailed reference viewed: 119 (28 ULg)
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See detailLe langage des personnes âgées porteuses d'une trisomie 21
Rondal, Jean-Adolphe ULg; Comblain, Annick ULg

in Orthophonie et Logopédie (2002), 1

Detailed reference viewed: 90 (4 ULg)
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See detailLangage et apprentissage: perspectives actuelles
Richelle, Marc ULg

in Informaciones Psiquitricas (1977), 68-69

Detailed reference viewed: 7 (1 ULg)
See detailLangage et intersubjectivité – Le concept d’Einfühlung chez Husserl
Gyemant, Maria ULg

Conference (2009, March 06)

Detailed reference viewed: 10 (0 ULg)
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See detailLangage et pratique de l'APP
VIERSET, Viviane ULg

Conference (2006, January 05)

Detailed reference viewed: 11 (0 ULg)
Peer Reviewed
See detailLangage et société dans la grammaire philosophique, de Du Marsais à Michaelis: Proudhon et le Rubicon
Droixhe, Daniel ULg

in Etudes sur le XVIIIe siècle (1976), 3

Detailed reference viewed: 40 (24 ULg)
See detailLangage oral: Aspects développementaux
Rondal, Jean-Adolphe ULg; Brédart, Serge ULg

in Rondal, Jean-Adolphe (Ed.) Troubles du langage: Diagnostic et rééducation (1982)

Detailed reference viewed: 102 (16 ULg)
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See detailLe langage spontané des enfants prématurissimes : analyse du langage descriptif et informatif
Grooteclaes, Vanessa; Docquier, Laurence ULg; Maillart, Christelle ULg

in Glossa (2010), 108

The limits of prematurity don’t stop moving back and very premature children with a very low birth weight survive. Since a short time studies have been conducted on the cognitive and language evolution of ... [more ▼]

The limits of prematurity don’t stop moving back and very premature children with a very low birth weight survive. Since a short time studies have been conducted on the cognitive and language evolution of those children. This present study aims to determine the nature of language repercussions of extremely prematurity birth by focusing more particularly on spontaneous language. Language performances of 23 children born at less than 26 weeks of gestational age will be compared to the ones of 23 children born at term, paired by age (between 6 and 8 years old), sex and sociocultural level. Two tasks will be compared : a task of descriptive language (narration based on pictures) and a test of informative language in which the child will have to transmit some precise information on the realization of familiar actions. The children’s productions have been written down, then analysed from a lexical, syntactic and semantic point of view. Results show that the two groups of children do not differ in the task of descriptive language but differences emerge in the task of informative language. On lexical level the richness and variety of words used by premature children seem poorer than the ones used by children born at term. From the syntactic point of view the average length of utterances of premature children is inferior to the one of children born at term. At last the semantic analyses show that the premature children express less ideas and that the semantic content of the given ideas is less rich in comparison with the children born at term. In conclusion this study suggests that the discursive level of highly premature children mustn’t only be tested with descriptive tasks but also with informative tasks which seem more sensible to the specific weaknesses of that population. [less ▲]

Detailed reference viewed: 272 (79 ULg)