Results 11 to 20 of about 107,031 (277)
On higher secant varieties of rational normal scrolls
Le Matematiche, 1996 In this paper we study the higher secant varieties of rational normal scrolls, in particular we give them as determinantal varieties. From this we can obtain, in some cases, the sequence of secant defects, generalizing to a class of varieties and to ...
Pietro De Poi
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A Severi type theorem for surfaces in P^6 [PDF]
, 2021 Let X⊂P^N be a projective, non-degenerate, irreducible smooth variety of dimensionn. After giving the definition ofgeneralised OADP-variety (one apparent double point), i.e.
de poi, pietro +2 more
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COMPANION VARIETIES FOR HESSE, HESSE UNION DUAL HESSE ARRANGEMENTS [PDF]
, 2023 Unexpected hypersurface is a name given an element to some particular linear system introduced around in [2], motivated by work of Di Gennaro, Ilardi and Vall`es and of Faenzi and Vall`es, and it is a field of great study since then.
De Poi, Pietro +3 more
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Open Geosciences, 2023 Examining the spatial characteristics and accessibility of cultural facilities, such as art institutions, is crucial for understanding the lifestyles of citizens.
Jiang Zhifeng
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Open Geosciences, 2023 This article focuses on Shanghai as a case study and utilizes various factors such as points of interest, nighttime lights, land use, road networks, and Digital Elevation Model to examine the spatial distribution of population.
Yuan Hongfu, Yang Xiangguo
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OSM POI ANALYZER: A PLATFORM FOR ASSESSING POSITION OF POIs IN OPENSTREETMAP [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Abstract. In recent years, more and increased participation in Volunteered Geographical Information (VGI) projects provides enough data coverage for most places around the world for ordinary mapping and navigation purposes, however, the positional credibility of contributed data becomes more and more important to bring a long-term trust in VGI data ...
Kashian, Alireza +3 more
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DNA damage in gill cells of Corbicula japonica exposed to natural and anthropogenic stressors
Frontiers in Genetics, 2015 Bivalve mollusks are sensitive biomarkers of aquatic ecosystem pollution. The impact of human activities on the environmental is an ongoing and increasing problem. There are many potentially dangerous chemicals that dissolve in water.
Valentina Vladimirovna Slobodskova
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ISPRS International Journal of Geo-Information, 2020 Georeferencing by place names (known as toponyms) is the most common way of associating textual information with geographic locations. While computers use numeric coordinates (such as longitude-latitude pairs) to represent places, people generally refer ...
Xi Kuai +5 more
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ISPRS International Journal of Geo-Information, 2020 The information of land use plays an important role in urban planning and optimizing the allocation of resources. However, traditional land use classification is imprecise. For instance, the type of commercial land is highly filled with the categories of
Xucai Zhang +3 more
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Construction and Connectivity Stress Analysis of Urban Ecological Network in the Nansha New District
Redai dili, 2023 Optimizing the ecological network structure and enhancing habitat connectivity are key to ensuring urban ecological security, and the combination of urban big data can more accurately reveal the stress effects of the spatial heterogeneity of human ...
Lyu Jixin +3 more
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