نتایج جستجو برای: spatio temporal model

تعداد نتایج: 2294021  

Remote sensing indices are used to analyze the Spatio-temporal distribution of drought conditions and to identify the severity of drought. This study, using various drought indices generated from Madis and TRMM satellite data extracted from Google Earth Engine (GEE) platform. Drought conditions in Marivan city from February to November for the years 2001 to 2017 were analyzed based on spatial a...

Journal: :ISPRS International Journal of Geo-Information 2016

2013
Jaeil Kim Munchurl Kim

In this paper, we first introduce a spatio-temporal Just Noticeable Difference (JND) model based perceptual video coding (PVC) scheme which is completely compliant with HEVC. We incorporate into HEVC quantization process a JND model that takes into account both the temporal JND characteristics of temporal masking effects and the spatial JND characteristics of the luminance adaptation and contra...

Journal: :Geospatial health 2015
Adina Iftimi Francisco Martínez-Ruiz Ana Míguez Santiyán Francisco Montes

Chickenpox is a highly contagious airborne disease caused by Varicella zoster, which affects nearly all non-immune children worldwide with an annual incidence estimated at 80-90 million cases. To analyze the spatiotemporal pattern of the chickenpox incidence in the city of Valencia, Spain two complementary statistical approaches were used. First, we evaluated the existence of clusters and spati...

2009
Xu Aigong A. H. Lakmal

Geographical phenomena involve entities and changes that are located in both space and time. Therefore, it is not an unjust germane to declare each geographical phenomena as spatio – temporal phenomena. As a result of that, building a taxonomy of spatio – temporal phenomena implies an analysis of the representation of facts and occurrences within a space – time framework. While the absolute app...

1999
John F. Roddick Fabio Grandi Federica Mandreoli Maria Rita Scalas

Schema versioning provides a mechanism for handling change in the structure of database systems and has been investigated widely, both in the context of static and temporal databases. With the growing interest in spatial and spatio-temporal data as well as the mechanisms for holding such data, the spatial context within which data is formatted also becomes an issue. This paper presents a genera...

Journal: :IEEE Transactions on Knowledge and Data Engineering 2002

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