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Air Indexes for Spatial Databases [chapter]

Christian S. Jensen, Richard T. Snodgrass, Jan Chomicki, David Toman, Bernhard Thalheim, Elena Ferrari, Elena Ferrari, Athena Vakali, Evaggelia Pitoura, Gottfried Vossen, Mukesh Mohania, Ullas Nambiar (+110 others)
2009 Encyclopedia of Database Systems  
SYNONYMS None DEFINITION Air indexes refer to indexes employed in wireless broadcast environments to address scalability issue and to facilitate power saving on mobile devices [3] .  ...  The basic idea of air indexes is that by including index information about the arrival times of data items on the broadcast channel, mobile clients are able to predict the arrivals of their desired data  ...  " # # # Figure 1: Air Indexes in Wireless Broadcast Environments To disseminate spatial data on wireless channels, well known spatial indexes (e.g., R-trees) are candidates for air indexes.  ... 
doi:10.1007/978-0-387-39940-9_15 fatcat:kkqrjpcap5b5ldprxc32jaizqu

Air Indexes for Spatial Databases [chapter]

Baihua Zheng
2016 Encyclopedia of Database Systems  
SYNONYMS None DEFINITION Air indexes refer to indexes employed in wireless broadcast environments to address scalability issue and to facilitate power saving on mobile devices [3] .  ...  The basic idea of air indexes is that by including index information about the arrival times of data items on the broadcast channel, mobile clients are able to predict the arrivals of their desired data  ...  " # # # Figure 1: Air Indexes in Wireless Broadcast Environments To disseminate spatial data on wireless channels, well known spatial indexes (e.g., R-trees) are candidates for air indexes.  ... 
doi:10.1007/978-1-4899-7993-3_15-2 fatcat:nyl6eafmafewfj2lt77zgbkv4m

Moving Object Databases-Indexing Algorithms

İrfan Ayabakan, Perihan Kilimci
2014 Journal of clean energy technologies  
The achieved improvements concerning indexing methods in moving object databases, which is a very popular subject, will surely provide enormous benefits to the pertinent technology field.  ...  However, they also lacked to use of spatial and temporal data in a dynamic environment efficiently.  ...  R-Tree can be updated yet not for constant movement, hence there is a 2 level R-Tree designed for spatial/temporal matters.  ... 
doi:10.7763/ijcte.2014.v6.909 fatcat:n3rrtcubsvbjnapexiclpdofae

Implementation of Agro-environmental Information Service System Based on WebGIS [chapter]

Lin Peng, Linnan Yang, Limin Zhang
2011 IFIP Advances in Information and Communication Technology  
This paper constructed an agro-environmental information service system based on the spatial database, computer network and geographic information system (GIS) technology.  ...  And it provided a precedent for other Counties in Yunnan to construct agricultural environmental information system.  ...  The soil database sample was showed in table 1. Table 1. Air pollution Index data The irrigation water database sample was showed in table 2. Table 3. Soil pollution Index data Database design.  ... 
doi:10.1007/978-3-642-18333-1_49 fatcat:zifqu4njonbqza2cc2c7pdm7ty

A Study on Integrated Assessment Method for Urban Characteristics with Sustainable Compact City Development

Yasuaki HIJIOKA, Hideo HARASAWA, Shiro KAWAI, Yusuke MITSUOKA, Eriko NAKAO
2003 Proceedings of the Symposium on Global Environment  
socio-economic, environmental and spatial density index.  ...  viewpoints of city evaluation considering concepts of compact city as a sustainable one. 2) Constructing a city profile database, developing comprehensive framework for city evaluation considering environmental  ...  socio-economic, environmental and spatial density index.  ... 
doi:10.2208/proge.11.35 fatcat:zfilv7ppcje5pif4lq2rf2rd2u

Competing Networks, Spatial and Industrial Concentration in the US Airline Industry

Aisling J. Reynolds-Feighan
2007 Spatial Economic Analysis  
The paper uses Gini decomposition analysis to evaluate changes in the spatial distribution and industry shares of total US air traffic, as well as analysing the decomposition components for individual  ...  examination of air transport networks and traffic distributions.  ...  The impacts of these changes on the spatial distribution of traffic are examined for the period 1990Á2002 using the T100 database and for the longer 1973Á2002 period using the T3 database.  ... 
doi:10.1080/17421770701549779 fatcat:umsiljswcrhftpz7v4ubospsry

WEB BASED 3D VISUALISATION OF TIME-VARYING AIR QUALITY INFORMATION

U. Isikdag, K. Sahin
2018 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
In the system, visualisation can be achieved on-demand by querying an air pollutant information database of 10.330.629 records and a city object database with more than 700.000 records.  ...  </strong> Many countries where the industrial development and production rates are high face many side effects of low air quality and air pollution.  ...  As mentioned earlier, the Turkish National Air Quality Index was adopted from EPA Air Quality Index, and limit values for pollutants are similar to EPA Air Quality Index limits.  ... 
doi:10.5194/isprs-archives-xlii-4-267-2018 fatcat:xgtzbnxoifhyhafuskpgsjnlxy

A low-altitude public air route network for UAV management constructed by global subdivision grids

Weixin Zhai, Bing Han, Dong Li, Jiexiong Duan, Chengqi Cheng
2021 PLoS ONE  
Utilization of the subdivision grids transforms the complex spatial computation problem into a query process in the spatial database, which provides a new approach to UAV management in the fifth-generation  ...  In this research, we proposed a new air traffic management method for UAVs based on global subdivision theory.  ...  At level 21, the time consumption with the spatial index is only 1.6% of the time consumption with no spatial index.  ... 
doi:10.1371/journal.pone.0249680 pmid:33852616 pmcid:PMC8046233 fatcat:odlzm4af4zevply4eofxtk3yty

Spatial modelling of air pollution in urban areas with GIS: a case study on integrated database development

L. Matejicek
2005 Advances in Geosciences  
In spite of the fact that simulation of air pollutant distribution is carried out by standalone computer systems, the spatial database in the framework of the GIS is used to support decision-making processes  ...  The measurement of NO x and O 3 by an automatic monitoring system and data from the differential absorption LIDAR are used for investigation of air pollution.  ...  The paper was carried out in the frame of the project AVCR 1ET400760405, which is generally focused on measurement and modelling of air pollution in urban areas and flat landscape.  ... 
doi:10.5194/adgeo-4-63-2005 fatcat:uthjwtbdyvayjoxx3y6k3w7wsy

Exploiting WebGis technology to build an environmental database to support the environmental management of Ho Chi Minh city

Phu Cuong Tran, University of Technology, Vietnam National University, Ho Chi Minh city, Thi Van Tran, University of Technology, Vietnam National University, Ho Chi Minh city
2019 Vietnam Journal of Science Technology and Engineering  
city, which will be used by the HCM-SSED system (Ho Chi Minh city -system for sharing environmental database).  ...  In this work, the geodatabase model of geographic information system (GIS) combined with the WebGIS system based on ArcGIS server technology was employed to build environmental database for Ho Chi Minh  ...  -Information: this group gathers data and information on monitoring indicators from air and water monitoring stations as a basis for calculation of the AQI (air quality index) and WQI (water quality index  ... 
doi:10.31276/vjste.61(4).76-81 fatcat:k5dabxjzo5hfjesyxdtthsxerm

Influence of Urban-Growth Pattern on Air Quality in China: A Study of 338 Cities

Yanchuan Mou, Yan Song, Qing Xu, Qingsong He, Ang Hu
2018 International Journal of Environmental Research and Public Health  
Spatial regression techniques considering spatial autocorrelation were applied to correct the calculation bias.  ...  Significant and positive relationships between the aggregated urban growth pattern index and air pollution were observed in Northeast China, northern coastal China, and Northwest China, indicating that  ...  Aggregated Urban Growth Pattern Index (AUGPI) The land use data for 2005-2015 were obtained from the National Land Use/Cover Database of China at the 1:100,000 scale.  ... 
doi:10.3390/ijerph15091805 pmid:30131468 fatcat:zrblefotvzgpnkgvlibw5xh6ke

Impacts of Haze on Housing Prices: An Empirical Analysis Based on Data from Chengdu (China)

Runqiu Liu, Chao Yu, Canmian Liu, Jian Jiang, Jing Xu
2018 International Journal of Environmental Research and Public Health  
Residents are willing to pay a premium for better air quality and the influence of air quality is partially reflected in housing prices, which indicates that better air quality has been becoming a scarce  ...  Controlling other variables, if the air quality index rises by 0.1, the housing selling prices and rental prices will drop by 3.97% and 4.01%, respectively.  ...  The regression coefficient for the air quality index is −0.3967, which implies that a unit of housing selling price falls by 39.67% when the air quality index rises by 1.  ... 
doi:10.3390/ijerph15061161 pmid:29865260 pmcid:PMC6025591 fatcat:fe4ltw5xj5hohbq2ublnt7qnta

Content-based image retrieval for semiconductor manufacturing

Thomas P. Karnowski, Kenneth W. Tobin, Jr., Regina K. Ferrell, Fred Lakhani, Kenneth W. Tobin, Jr.
2000 Machine Vision Applications in Industrial Inspection VIII  
We next describe details of the system implementation including image processing and preparation, database indexing, and image retrieval.  ...  We review the AIR system approach including the application environment as well as details on image interpretation for content-based image retrieval.  ...  data reduction technologies and new strategies for yield management.  ... 
doi:10.1117/12.380070 fatcat:ugyo47gjxjah5jnfuomqs6yrg4

Geomatics Approach for Assessment of respiratory disease Mapping

M. Pandey, V. Singh, R. C. Vaishya
2014 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
The fuzzy logic model is designed to predict Air Quality Index (AQI) that report monthly air qualities.  ...  This report supplies a reliable method in assessing the Air Quality Index (AQI) by using fuzzy logic.  ...  AIR QUALITY INDEX An air quality index is one of the important tools available for analyzing and representing air quality status uniformly so the air quality index (AQI) can be used as a measure to assess  ... 
doi:10.5194/isprsarchives-xl-8-205-2014 fatcat:mjxbdwgfuvd7fcnfcrhnbjg6si

Moving-Object management method of combat system using main memory DBMS

Jongsu Hwang
2016 Ciencia y Tecnología de Buques  
This is based on the main memory database technology provided by the high speed transaction processing performance.  ...  Furthermore, it automatically performs all processes such as engagement plans, weapon assignments, and target detection using already pre-deployed database information.  ...  New indexing techniques are implemented on spatial and temporal data in order to efficiently query this kind of data. Thus, R-tree indexing and its derivatives are used in moving object databases.  ... 
doi:10.25043/19098642.129 fatcat:o6ka5rqdbrgitpcxdbudr7qwjy
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