Spatial Databases
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Most downloaded papers in Spatial Databases
The paper aims to reveal one integrated global map which points out the major geographical inequalities in providing basic utilities across the countries using multivariate analysis and thematic cartography. Sixteen indicators with global... more
Data yang mengendalikan Sistem Informasi Geografis adalah data spasial. Setiap fungsionalitas yang membuat SIG dibedakan dari lingkungan analisis lainnya adalah karena berakar pada keaslian data spasial.
Cite this article: Raszkowski, A., Bartniczak, B. Towards Sustainable Regional Development: Economy, Society, Environment, Good Governance Based on the Example of Polish Regions. Transformations in Business & Economics, 2018, Vol. 17, No... more
Di era yang semakin berkembang, banyak bidang ilmu seperti ekonomi, sosial, lingkungan, kesehatan, meteorologi, klimatologi, geologi dan sebagainya yang menggunakan data yang berkaitan dengan lokasi atau letak gepgrafis suatu tempat. Data... more
The clustering algorithm DBSCAN relies on a density-based notion of clusters and is designed to discover clusters of arbitrary shape as well as to distinguish noise. In this paper, we generalize this algorithm in two important directions.... more
The purpose of this study is to impute missing monthly maximum temperature data from the department of Valle del Cauca, located in Colombia, over a period of two years (2013 y 2014). For this, a geostatistical technique will be used,... more
The amount of data stored in IoT databases increases as the IoT applications extend throughout smart city appliances, industry and agriculture. Contemporary database systems must process huge amounts of sensory and actuator data in... more
Data exploration and visualization systems are of great importance in the Big Data era. Exploring and visualizing very large datasets has become a major research challenge, of which scalability is a vital requirement. In this survey, we... more
Big Data Visualization Tools : A Survey of the State of the Art and Challenges Ahead
MobTrack:24 is a location based service that belongs to LBS applications for the tracking and management of fleet of vehicles. The design and the development of the first system version were done in 2008 and 2009. The system has been in... more
Data exploration and visualization systems are of great importance in the Big Data era, in which the volume and heterogeneity of available information make it difficult for humans to manually explore and analyse data. Most traditional... more
Improving the use of vector data in web mapping is often shown as an important challenge. Such shift from raster to vector web maps would open web mapping and GIS to new innovations and new practices. The main obstacle is a performance... more
Earth’s land cover has been extensively transformed over time due to both human activities and natural causes. Previous global studies have focused on developing spatial and temporal patterns of dominant human land-use activities (e.g.,... more
This paper presents a proposal to create a graph representation for GIS, using both spatial and non-spatial data and also including spatial relations between spatial objects. Because graphs are a powerful and flexible knowledge... more
Associate Professor Ahmad Rodzi Mahmmud, PhD
The clustering algorithm DBSCAN relies on a density-based notion of clusters and is designed to discover clusters of arbitrary shape as well as to distinguish noise. In this paper, we generalize this algorithm in two important directions.... more
Internet maps could be improved with the use automated mapping methods, especially automated generalisation techniques. This article analyses why automated generalisation is not used in web mapping and presents a some solutions to plug... more
Organizations adopt different databases for big data which is huge in volume and have different data models. Querying big data is challenging yet crucial for any business. The data warehouses traditionally built with On-line Transaction... more
The paper uses a simple example to illustrate identification of an Entity Relationship Diagram components to model a GIS database.
In this paper we describe the workflow of modeling the Palpa geoglyphs by linking spatial and archaeological data. The goal is to generate 3D objects stored in a geodatabase that can be queried and analyzed in GIS.
Las bases de datos espaciales (spatial database) se utilizan para almacenar datos espaciales, o en otras palabras, los datos relacionados con los espacios en el mundo físico. En este tipo de bases de datos es imprescindible establecer un... more
For additional information, see The TIMECENTER Homepage: URL: <http://www.cs.auc.dk/TimeCenter>
We present a novel platform for the interactive visualization of very large graphs. The platform enables the user to interact with the visualized graph in a way that is very similar to the exploration of maps at multiple levels. Our... more
Skyline queries return the set of non-dominated tuples, where a tuple is dominated if there exists another with better values on all attributes. In the past few years the problem has been studied extensively, and a great number of... more
Associate Professor Ahmad Rodzi Mahmmud, PhD
Spatial data is inherently uncertain. The main sources of uncertainty include uncertainty in the collection, processing and representation of data (e.g., missing or ambiguous data, measurement uncertainties, raster-to-vector conversion,... more
Nowadays, in Geographical Information Systems (GIS), usage of Location Based Services (LBS) has been exploded and map based web/mobile applications have been rapidly increased. With the occurrence of this event, spatial data accessing,... more
We focused on applying parallel computing technique to the bulk loading of X-tree in other to improve the performance of DBSCAN clustering algorithm. We have given a full description of how the system can be archived. We proposed a new... more
During the course of 2008 and 2009 the Qatar Museums Authority (QMA) and the VISTA Centre at Birmingham University collaborated together on a project to analyse remotely sensed data in both the marine and terrestrial areas of Qatar. This... more
Nowadays revitalization is often defined as a comprehensive effort including revalorization, restoration, reconstruction, modernization and actions aimed at the revival of a building, a district or a town devastated in different aspects,... more
This article presents the steps taken to ensure the consistency and usability of the geographic information system of soil resources of Romania SIGSTAR-200 within INSPIRE, the Infrastructure for Spatial Information of the European... more