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Showing results 80061 to 80080 of 95197
 Sartre, Lévinas et la question de la honteDawans, Stéphane  Conference (2002, June 22) Detailed reference viewed: 23 (1 ULg)Sartre, Merleau-Ponty, Bergson. Les phénoménologies existentiaistes et leur héritage bergsonienCaeymaex, Florence Book published by Olms (2005) Detailed reference viewed: 24 (3 ULg)Sartre. Le spectre de la honte.Dawans, Stéphane Book published by Les Editions de l'Université de Liège (2001) Une hontologie sartrienne? Sartre a encore bien des choses à nous dire après ce que Janicaud a dénoncé comme un tournant théologique de la phénoménologie française. Mais comment l'existentialiste français ... [more ▼] Une hontologie sartrienne? Sartre a encore bien des choses à nous dire après ce que Janicaud a dénoncé comme un tournant théologique de la phénoménologie française. Mais comment l'existentialiste français peut-il fonder une morale de la honte sans récrire une philosophie du ressentiment? C'est la question à laquelle cet essai tente de répondre. [less ▲] Detailed reference viewed: 14 (1 ULg) Satellite Accounts for Cooperatives and Mutuals in Belgium. First elaboration (SATACBEL)Fecher-Bourgeois, Fabienne ; Ben Sedrine, Wafa ; Conference (2011, July 04) Detailed reference viewed: 11 (7 ULg)Satellite Accounts for Cooperatives and Mutuals in Belgium. First elaboration (SATACBEL)Fecher-Bourgeois, Fabienne ; ; Report (2010) Detailed reference viewed: 19 (8 ULg)Satellite and in situ sea surface temperature comparison and merging in the Mediterranean Sea.Alvera Azcarate, Aïda ; Barth, Alexander ; Beckers, Jean-Marie Conference (2011, April 03) A comparison between in situ and satellite sea surface temperature (SST) for the western Mediterranean Sea is presented. Several international databases are used to extract in situ data: World Ocean ... [more ▼] A comparison between in situ and satellite sea surface temperature (SST) for the western Mediterranean Sea is presented. Several international databases are used to extract in situ data: World Ocean Database (WOD), MEDAR/Medatlas, Coriolis Data Center, International Council for the Exploration of the Sea (ICES) and International Comprehensive Ocean-Atmosphere Data Set (ICOADS). The in situ data are classified into different platforms or sensors (CTD, XBT, drifters, bottles, ships), in order to assess the average difference between these type of data and AVHRR (Advanced Very High Resolution Radiometer) SST satellite data. Attention is given also to the relative accuracy of each database, and advantages and shortcomings on the use of each database will be discussed. The error assessment will be used to merge in situ and satellite SST data using DINEOF (Data Interpolating Empirical Orthogonal Functions), an EOF-based technique. The impact of the sensor-specific errors on the quality of the final product will be assessed, and compared to the results obtained when a more general error estimate is used. [less ▲] Detailed reference viewed: 19 (2 ULg) Satellite CommunicationsVan Droogenbroeck, Marc Learning material (2012) Introduction to satellite communications. Detailed reference viewed: 46 (9 ULg)Satellite data for local investigation in coastal zones: case study for Tangier area (Morrocco); ; et al in 35th COSPAR Scientific Assembly (2004) Recent operative satellite multispectral sensors like MERIS, MODIS with more traditional AVHRR and SeaWiFS and high resolution ASTER and ASAR give an unique opportunity for investigation of the marine ... [more ▼] Recent operative satellite multispectral sensors like MERIS, MODIS with more traditional AVHRR and SeaWiFS and high resolution ASTER and ASAR give an unique opportunity for investigation of the marine processes with spatial scale from few hundred meters and temporal variability from few hours. In addition to this, QuikScat wind data helps to better understand an eventual forcing variation. One of the most important processes in coastal area is water (and probable pollutants) transport and mixing. Optical and thermal properties of the water or surface roughness peculiarities can be used as tracers or markers on subsequent images for the estimation of the currents structure and pollution displacement in ocean upper layer. Such kind of investigation is subject to significant interest near the ports and cities surroundings due to strong anthropogenic impact. Processes for the Tangier bay area were investigated by the means of the above-mentioned satellite data coupled with CTD and ADCP field measurements (August 2003). This analysis shown the strong influence of the mesoscale processes like eddies and wind driven upwelling on the currents patterns in the coastal zone. On the basis of the ASTER and ASAR data we estimated typical pollutions pathways. MODIS (Aqua and Terra ) and MERIS data were used for investigation of the variations of the water optical properties on time scale from few hours. This scale is important according to the typical 12 hours tidal motions in Tangier bay area Mutual analyses shown that mixing on Camarinal sill play a significant role in exchange processes in Tangier bay . AVHRR SST data set were analyzed together with QuikScat wind data. This analysis shown that Westward winds caused coastal upwelling phenomena with temperature difference up to 10° C. Quikscat spatial wind variability was also compared with NCEP wind data in nearest point --6W, 36N. Animations for different seasons, on the basis of subsequent thermal AVHRR images, highlighted the variability of regional dynamics. In addition, SeaWiFS time series images were processed, analyzed and compared with MODIS and MERIS data. Multispectral and multisensors approach for Tangier coastal areas study shown high efficiency at that scale, and can obviously be used for other regions. [less ▲] Detailed reference viewed: 10 (1 ULg)Satellite Geodesy at the Royal Observatory of BelgiumWarnant, René in Space Scientific Research in Belgium, Volume III: “Earth Observation” (1994) Detailed reference viewed: 10 (0 ULg)Satellite image maps of Warsaw in the scale 1 :25,000; Donnay, Jean-Paul ; in EARSeL Advances in Remote Sensing (1995), 4(2), 100-103 Detailed reference viewed: 6 (0 ULg)Satellite measurements of high-altitude twilight Mg/plus/ emissionGérard, Jean-Claude in Journal of Geophysical Research (1976), 81 Observations made by the ultraviolet spectrometer on board the orbiting geophysical observatory OGO 4 confirmed the presence of resonance scattering at 2800 A of Mg(plus) ions in the twilight subtropical ... [more ▼] Observations made by the ultraviolet spectrometer on board the orbiting geophysical observatory OGO 4 confirmed the presence of resonance scattering at 2800 A of Mg(plus) ions in the twilight subtropical ionosphere. The column density reached 4 billion ions/sq cm above 160 km. Photometric measurements by the ESRO TD 1 satellite revealed a maximum of the Mg(plus) abundance at equinoxes in the top side F region. The interhemisphere asymmetries observed in the intensity distribution are essentially attributed to the effect of eastward thermospheric winds. The 2800-A doublet was also detected by OGO 4 at middle and high latitudes from 110 to 250 km. The brightness of the emission and other evidence indicate that evaporation of meteoritic matter cannot explain the abundance of ions at 200 km. Therefore Mg(plus) ions are probably transported upward from the 100-km permanent source layer. [less ▲] Detailed reference viewed: 6 (0 ULg)Satellite observations of the equatorial Mg II dayglow intensity distribution.Gérard, Jean-Claude ; in Journal of Geophysical Research (1974), 79 Not Available Detailed reference viewed: 1 (0 ULg)Satellite observations of the nitric oxide nightglowGérard, Jean-Claude in Geophysical Research Letters (1975), 2 Not Available Satellite studies of N/D-2/ emission and ion chemistry in aurorae; Gérard, Jean-Claude in Journal of Geophysical Research (1980), 85 The incident particle flux ion and neutral composition data taken on the AE-D satellite have been used to investigate the quantal emission of N2(plus) at 4278 A, N(D-2) at 5200 A, and the ion chemistry in ... [more ▼] The incident particle flux ion and neutral composition data taken on the AE-D satellite have been used to investigate the quantal emission of N2(plus) at 4278 A, N(D-2) at 5200 A, and the ion chemistry in aurorae. The results of a time dependent auroral model have been compared to the data. The calculated 4278 A emission of N2(plus), the 5200 A emission of N(D-2), the densities of O2(plus), NO(plus), N2(plus), O(plus), and the electron density are generally in agreement with the measured values. These results are consistent with the branching ratios and quenching rates deduced from previous studies of the N(D-2) densities in the day-time, mid-latitude ionosphere. It is found that in an auroral arc, the measured atomic oxygen density is lower than predicted by the MSIS model. [less ▲] Detailed reference viewed: 3 (0 ULg) Satellite validation of column-averaged methane on global scale: ground-based data from 15 FTIR stations versus last generation ENVISAT/SCIAMACHY retrievals; ; et al Poster (2008, September) Previous work has shown that the precision of ground-based mid-infrared (MIR) FTIR spectrometry is sufficient to detect day-to-day variability of columnar methane, while first retrievals from ENVISAT ... [more ▼] Previous work has shown that the precision of ground-based mid-infrared (MIR) FTIR spectrometry is sufficient to detect day-to-day variability of columnar methane, while first retrievals from ENVISAT/SCIAMACHY (channel 8) satellite measurements were impacted by a significant time-dependent bias due to detector icing. This prevented insight into true methane temporal variability at that time. The goal of our updated study is to investigate the precision of the last generation (channel 6) SCIAMACHY retrievals IMAP-DOAS v49 and WFM-DOAS v1.0 in comparison to retrievals from ground-based MIR measurements of the European FTIR network. We first briefly discuss the origin and magnitude of the natural variability of columnar methane. Subsequently, our study investigates all factors which can be optimized to improve precision of ground-based MIR-FTIR retrievals of columnar methane. This includes an optimized Tikhonov-type regularization tuned in a way to minimize the diurnal variability of retrieved columnar methane. We also discuss ways to select and average individual-pixel satellite data in order to reflect true day-to-day variability and make them comparable to ground-based data. [less ▲] Detailed reference viewed: 46 (13 ULg)Satellite-Based Collision Avoidance SystemChristen, Fréderic ; ; et alin ATZelektronik worldwide (2013), 01/2013 Currently the RWTH Aachen University is developing a collision avoidance system (CAS) using Galileo data within the framework of the project ‘Galileo above’ (application centre for ground based traffic ... [more ▼] Currently the RWTH Aachen University is developing a collision avoidance system (CAS) using Galileo data within the framework of the project ‘Galileo above’ (application centre for ground based traffic). The needed Galileo-signals are emitted by so-called pseudolites (pseudo-satellites) installed on the automotiveGATE. The research project is sponsored by the Space Agency of the German Aero-space Centre (DLR) with funding by the Federal Ministry of Economics and Technology, in compliance with a resolution of the German Parliament (pro-ject/grant no. 50 NA 0902). This paper will give some de-tails on the perception and sensor fusion, the de-escalation and intervention decision as well as on first testing results regarding rear-end collisions. [less ▲] Detailed reference viewed: 15 (2 ULg)Satellite-induced electron acceleration and related auroras; ; Bonfond, Bertrand et alConference (2012, September 26) Satellite-induced auroral emissions are known since decades, in particular those associated with the interaction of Io with the Jovian ionosphere. These emissions range from low frequency radio to UV ... [more ▼] Satellite-induced auroral emissions are known since decades, in particular those associated with the interaction of Io with the Jovian ionosphere. These emissions range from low frequency radio to UV. Flyby of Io allowed to better understand the power generation close to the satellite, and showed the existence of electron beams accelerated at high latitude. We will present a study of the power transfer between the local interaction at Io and the electron accelerated close to Jupiter. It shows that Alfvén acceleration can explain the morphology and brightness of the Io-related auroraeand the observed accelerated electrons in Io’s wake. The study is extended to the Europa, Ganymede and Enceladus for which auroral emissions have been observed, as well as to Callisto and to the principal inner satellites of Saturn. [less ▲] Detailed reference viewed: 17 (0 ULg)Satellitenbasiertes KollisionsvermeidungssystemChristen, Fréderic ; ; et alin ATZelektronik (2013), 01/2013 Gegenwärtig entwickelt die RWTH Aachen University im Rahmen des Projekts „Galileo above“ (Anwendungszentrum für bodengebundenen Verkehr) ein Kollisionsvermeidungssystem (Collision Avoidance System, CAS ... [more ▼] Gegenwärtig entwickelt die RWTH Aachen University im Rahmen des Projekts „Galileo above“ (Anwendungszentrum für bodengebundenen Verkehr) ein Kollisionsvermeidungssystem (Collision Avoidance System, CAS) unter Einbeziehung von Galileo-Daten. Die hierfür benötigten Galileo-Signale werden von den im automotiveGATE errichteten Pseudoliten (Pseudo-Satelliten) ausgestrahlt. Das Vorhaben wird von der Raumfahrt-Agentur des Deutschen Zentrums für Luft und Raumfahrt e. V. mit Mitteln des Bundeministeriums für Wirtschaft und Technologie (Förderkennzeichen 50 NA 0902) gefördert. Im Rahmen dieses Beitrags werden Erläuterungen zu Perzeption und Sensorfusion, Deeskalationsstrategie und Eingriffsentscheidung sowie zu ersten Testergebnisse bei Auffahrsituationen des CAS gege-ben. [less ▲] Detailed reference viewed: 12 (0 ULg)Satisfaction across urban consumers of smallholder-produced teak (Tectona grandis L.f.) poles in South Benin; ; et al in Forest Policy and Economics (2011), 13(8), 642-651 The study used the expectancy-disconfirmation framework to investigate the satisfaction among urban consumers of teak pole in South Benin, so as to identify the areas where interventions are needed to ... [more ▼] The study used the expectancy-disconfirmation framework to investigate the satisfaction among urban consumers of teak pole in South Benin, so as to identify the areas where interventions are needed to secure market opportunity for smallholder forestry. A survey was conducted in five cities; and 223 household-heads were interviewed using systematic sampling, with a random start. Data were collected on socio-demographic characteristics, teak pole consumption forms, behaviour patterns, and motivations. Respondents also rated their expectations and perceptions for a set of nine attributes on a 7 points Likert scale. Hierarchical ascending cluster analysis was performed to identify consumer segments; and satisfaction level was analysed per segment, by determining the gap between expectations and perceptions, for all attributes. Four consumer segments were identified; and socio-demographic profiles differed across those segments. Competitive price was an important purchasing motivation across the identified segments. Consumers were dissatisfied with price, availability, knot frequency, bending, length, hardness, and durability of teak pole. The efforts to meet the consumer expectations should be concentrated on building farmers’ capacity in silvicultural management, and ensuring the availability of good planting material. The issue of competitive price might be addressed, through the improvement of the overall efficiency in the value chain. [less ▲] Detailed reference viewed: 18 (5 ULg)Saturation and non-linear effects in diffractive processes; Cudell, Jean-René in Burdik, C. (Ed.) 11th International Conference On Symmetry Methods In Physics (SYMPHYS-11) (2004) Detailed reference viewed: 4 (0 ULg) |
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