Spatial index

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  • The Importance Of Interlational Database Systems

    761 Words  | 4 Pages

    D. Horie et al. (2008)[26] Modern day's queries are posed on database spread across the globe, this may impose a challenge on processing queries efficiently, and a strategy is required to generate optimal query plans. In distributed relational database systems, due to partitioning or replication on relations at multiple sites, the relations required by a query to answer, may be stored at multiple sites. This leads to an exponential increase in the number of possible equivalent alternatives or query

  • Evaluation Of Hedonic Price Model

    1607 Words  | 7 Pages

    4. Methodology 4.1. Analytical Framework (Generalized Spatial Two-Stage Least Square: GS2SLS) Hedonic price model has been developed and widely used to identify the factors explaining housing prices (Malpezzi, 2003). In this study, we deal with additional two statistical issues such as endogeneity between land use and housing price and spatial autocorrelation between housing prices. First, endogeneity should be carefully accounted for when measuring the effect of land use on housing prices because

  • Geography And Crime Analysis

    895 Words  | 4 Pages

    crime occurs. Mapping incident locations is an effective way to identify spatial relationships and gain valuable insight into criminal activity.

  • Application of Gis in Natural Resourse Management

    10836 Words  | 44 Pages

    GIS, with their capabilities for spatial analysis and modeling of diverse data, can enhance the ability to address several natural resource and environmental issues that have spatial component (Nijkamp & Scholten, 1993). GIS can facilitate the organization, manipulation and analysis of diverse data often associated with these issues, and the data structures

  • Gender And Space Of The Gym, Mongolian Gers, And Iranian Houses

    1142 Words  | 5 Pages

    Therefore, it is evident that there exist certain forms of masculinity and femininity within certain spaces of the gym. Gender and space have had a relationship in history since the very beginning of established settlements. In modern days, examples of these spaces include Bedouin tents, Mongolian Gers, and Iranian houses. Within these residences, established spaces for each gender have played a significant role in social organization and familial life. However, this presence of segregation in space

  • Spatial And : Spatial Analysis

    1565 Words  | 7 Pages

    In addition to the endogeneity problem, researchers need to consider a spatial spillover effect when using spatial data. Generally, it is expected that neighboring areas have a stronger interaction than geographically distant areas. However, it is likely that unobserved household and neighborhood characteristics are shared over geographically adjacent neighborhoods, which can cause a spatial autocorrelation problem. Though spatially correlated errors do not result in biased estimates, these errors

  • A Brief Note On Diabetes Prevalence Rate And Socioeconomic And Life Style Variables

    962 Words  | 4 Pages

    the correlates of diabetes ignore the spatial non-stationarity by either fitting OLS method or using all the variables as nonstationary by fitting GWR model. A number of studies (Chen, Wu, Yang, & Su, 2010; Dijkstra et al., 2013; Hipp & Chalise, 2015; Siordia, Saenz, & Tom, 2012) used GWR model to study the association between diabetes and other covariates. GWR is one of the localized regression techniques which accounts for spatial heterogeneity or spatial non- stationarity (Benson, Chamberlin,

  • Geographic Information Science And Systems

    1738 Words  | 7 Pages

    Joseph Crain GPHY 384 Term Paper 04/19/2016 Geographic information science and systems can be an extremely powerful tool when properly applied to real world situations. GIS is commonly thought of as map making because it deals with spatial analysis, but data can be managed and manipulated to create a vast array of different outputs including charts and graphs. There are several software programs capable of dealing with GIS synthesis and analysis. The focus of this paper applies to use of ArcMap

  • Visual Illusions Are A Phenomena That Arise From Misperception Of The Observed Object 's Properties Essay

    944 Words  | 4 Pages

    visual channels are orientation and spatial-frequency specific after presenting the MLI to eight participants and observing a reduction on the illusion after exposure to a low spatial frequency grid. Although evidence questioning this claim has been presented in many studies (Carlson, Moeller, & Anderson, 1984) (García-Garibay & De Lafuente, 2015) (Zeman et al, 2014) (Zeman A. , Obst, Brooks, & Rich, 2013) where the illusion persists in images absent of low spatial frequencies and has been assessed

  • Data Processing And Comprehensive Geological Interpretation Of Geochemical Exploration

    809 Words  | 4 Pages

    for mineral exploration, through a series of effective methods for extracting information useful for prospecting. 5.1. Overview of regional geochemical data processing method During processing of regional geochemical data, the most commonly used spatial analysis methods are of two types: (analysis of