Multi-Temporal multi-scalar modelling of the dynamics of urban landscape changes by remote sensing

International audienc

Hyperspectral recognition of the urban vegetation using spectral library. Example of Kaunas (Lithuania)

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Au large de Martigues – Pointe Riche

À la suite de déclarations en 1991 et 1992 qui faisaient successivement mention de la présence par 14 à 17 m de fond, au Cap Couronne, de débris de tuiles, de poteries, et de pierres de lest d’une part, et d’autre part de gisements de bonbonnes, une opération de prospection fut programmée, en raison de la grande dispersion du mobilier sur le site. Celle-ci est actuellement en cours. Les premiers éléments recueillis permettent d’établir un début de typologie des bonbonnes et bouteilles (6 type..

Rlp7p is associated with 60S preribosomes, restricted to the granular component of the nucleolus, and required for pre-rRNA processing

Many analyses have examined subnucleolar structures in eukaryotic cells, but the relationship between morphological structures, pre-rRNA processing, and ribosomal particle assembly has remained unclear. Using a visual assay for export of the 60S ribosomal subunit, we isolated a ts-lethal mutation, rix9-1, which causes nucleolar accumulation of an Rpl25p-eGFP reporter construct. The mutation results in a single amino acid substitution (F(176)S) in Rlp7p, an essential nucleolar protein related to ribosomal protein Rpl7p. The rix9-1 (rlp7-1) mutation blocks the late pre-RNA cleavage at site C(2) in ITS2, which separates the precursors to the 5.8S and 25S rRNAs. Consistent with this, synthesis of the mature 5.8S and 25S rRNAs was blocked in the rlp7-1 strain at nonpermissive temperature, whereas 18S rRNA synthesis continued. Moreover, pre-rRNA containing ITS2 accumulates in the nucleolus of rix9-1 cells as revealed by in situ hybridization. Finally, tagged Rlp7p was shown to associate with a pre-60S particle, and fluorescence microscopy and immuno-EM localized Rlp7p to a subregion of the nucleolus, which could be the granular component (GC). All together, these data suggest that pre-rRNA cleavage at site C(2) specifically requires Rlp7p and occurs within pre-60S particles located in the GC region of the nucleolus

: Comprehensive Evaluation of the Territory Adjacent to the Road "Kolyma" (on the Example of Central Yakutia)

International audienceThe highway "Kolyma" is one of the most promising tourist sites of Yakutia. It crosses a variety of landscapes, has a unique history, available to the public. This article concerns on the evaluation of tourist potential of the territory, "Kolyma", adjacent to the road will highlight attractive from a touristic spot.Автомобильная дорога «Колыма» является одним из наиболее перспективных туристических объектов Якутии. Она пересекает разнообразные ландшафты, имеет уникальную историю, доступна для посещения. Оценка туристско-рекре-ационного потенциала территории, прилегающей к дороге «Колыма» позволит выделить привлекательные с туристической точки участки

Post-soviet geo-demographic dynamics and metropolisation processes in the Republic of Sakha (Russian Federation)

International audienceThe dynamics of metropolisation in the Republic of Sakha (Yakutia) in the context of the post-soviet geo-demographic processes, globalisation, territorial integration and global warming are analyzed in the article. These processes are characterised with the emergence of an urban region centred on Yakutsk. The decreasing of population is driving by the economic changes, the lifestyle evolutions of the society, and rural migrations to urban centres. They are impacting the population balances and generating new spatial demographic repartitions

Monitoring spatial accuracy of oil palm cultivation mapping in southern Cameroon from Landsat series images

International audienceStudying and mapping palm grove evolution allow understanding the impact related to its cultivation. Our study aims to map industrial palm grove using Landsat series images and measures the accuracy of the produced maps. It was carried out in SOCAPALM industrial plantation, located in southern of Cameroon. For the mapping and assessment of accuracy, per-pixel classification and confusion matrix method were used, respectively. We obtained an high correlated maps (Kappa =0.92 in 2001 vs 0.86 in 2015). However, some confusions were observed between vegetation and oil palm classes for the two periods, affecting the maps accuracy. These confusions are caused by the presence of mixed pixels resulting from the spatial and spectral characteristics of palm groves, the method used to map and validate the map, and uncertainty related to dada. To increase the accuracy, we suggest (1) to use another mapping method such as super-resolution mapping, (2) develop a classification system of cartographic product

Urban Vegetation Mapping using Hyperspectral Imagery and Spectral Library

International audienceThe development and expansion of urbanized areas around the cities, brings new challenging issues about the organization, the monitoring, and the distribution of green spaces within the cities (e.g. grass, trees, shrubs, etc.). Indeed, these spaces brings better life quality for population and preserve biodiversity. This study, aims to 1) investigate the feasibility of urban vegetation mapping by species using multiband imagery and spectral libraries and to 2) determine at what scale the mapping is reliable (e.g. trees scale, group of trees scale, high/short vegetation scale)

Environmental Education: The Case of International Double Master Diploma in Tourism between Russian and French Universities

International audienceNorthern oriental territories of Russia are characterised by some non exploited high potential of tourism of nature in the specific context of the little territorial development, the needs of diversification of the economic activities at the local level, under the process of regional integration with Asia, the exploitation of mineral ressources, and the global warming. Tourism is considered one of the key economic branch to develop. According to the policy issues of the North-Eastern Federal University of the Repubic of Sakha (Yakutia) to support the economic development, the creation of double diploma programs with the foreign universities is essential due to the need of best practice application and to insufficiency of local competences in this field . The joint master curriculum in tourism and environment built with Versailles Saint-Quentin-en-Yvelines University of France aims to train the future specialists of touristic development of the territory of Yakutia. The questions of distance learning and TIC as well as the integration of the environment and the nature fixing contents structuring the curriculum constitute the key-points of joint master program. The study was conducted within the scientific project of the Russian science Foundation No. 15-18-20047 "Landscape Ontology: semantics, semiotics, and geographic modeling

Changes of the Baltic Sea coastal urban region (with example of Klaipeda settlement)

International audienceThe goal of this study is to analyse the impact of urban sprawl on landscape around Klaipeda's city settlements in Lithuania. The main aims are: (I) find differences in location of settlements during period since 2005 to 2013; (II) predict possible settlements expansion till 2020; (III) evaluate possible urban sprawl impact on Klaipėda city and suburbs