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35 articles for “Spatial indexing”
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A Proposed Hybrid Spatial Indexing: QX Tree
Abstract: Out of different spatial indexing structures available for accessing spatial data, none of them is suitable for high dimensions. This is because the performance of the spatial indexing structures become poorer with the increase in dimension. Thus there is a need for a better spatial indexing structure for the same. Here we have proposed a hybrid indexing structure by combining the Quad Tree and X Tree. We have considered the …
Published in Recent Trends in Programming languages · Vol. 2, Issue 1, 2015 · pp. 23–27 Read article
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Groundwater Quality Assessment for Drinking and Irrigation Purposes in Tadimarri Mandal, Sri Sathya Sai District, Andhra Pradesh Using Water Quality Index and Geospatial Techniques
Abstract: Groundwater is the primary source of potable water and supports agriculture worldwide. Assessing its quality is vital to determine its suitability for various purposes, especially as a safe drinking water source. This study focuses on evaluating the quality of groundwater used for drinking and irrigation in Tadimarri Mandal, Anantapur district, Andhra Pradesh, India. During the pre-monsoon season, 30 groundwater samples were collected from boreholes and analyzed for physicochemical parameters. The …
Published in Journal of Remote Sensing & GIS · Vol. 15, Issue 3, 2024 · pp. 1–19 Read article
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Assessment of Groundwater Quality Using Water Quality Index (WQI), Pollution Index of Groundwater (PIG), and GIS in Parts of Anantapur District, Andhra Pradesh, India
Abstract: The purpose of this study was to assess the potability of groundwater resources in some parts of the Anantapur district of the Indian state of Andhra Pradesh. The water quality index, a spatial evaluation of groundwater using a GIS-based interpolation method, and the polluting groundwater index are some of the methods used to analyze water quality and explain the water quality of the studied area. A total of 22 groundwater …
Published in Journal of Remote Sensing & GIS · Vol. 13, Issue 3, 2022 · pp. 1–14 Read article
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Challenges and Opportunities in Spatio Temporal Data Analysis
Abstract: Spatiotemporal data analytics is a dynamic field that seeks to extract valuable information from data that integrates both spatial and temporal dimensions. This article explores the importance of this emerging field and its applications in a variety of fields, including environmental science, public health, and urban planning. Spatiotemporal data analysis addresses important research questions, such as determining event probabilities, understanding change patterns, identifying associations between events, and predicting events Future. …
Published in Journal of Remote Sensing & GIS · Vol. 14, Issue 2, 2023 · pp. 1–11 Read article
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NDVI: Irrigation Performance Evaluation Using RS and GIS
Abstract: In this paper, the effect of irrigation has been assessed based on fluctuations in crop productivity in temporal and spatial scale from normalized difference vegetation index (NDVI) obtained from moderate resolution imaging spectroradiometer (MODIS) for the years 2001, 2006, 2011 and 2016. For this study, we selected the Jayakwadi reservoir command areas in Marathawada region of Maharashtra. Using GIS techniques, delineated and LULC map was generated indicating agricultural lands. And …
Published in Journal of Water Resource Engineering and Management · Vol. 4, Issue 2, 2017 · pp. 17–21 Read article
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Application of Remote Sensing and GIS Techniques for Decadal Change Detection of Mangroves along Tamil Nadu Coast, India
Abstract: Mangrove forests are among of the most productive and biologically important ecosystems of the world. The mangrove forests aids stabilize shorelines and reduce the devastating impact of natural disasters such as tsunamis and hurricanes. They also provide breeding and nursing grounds for marine and pelagic species, and food, medicine, fuel and building materials for local communities. Despite of its immense importance, it is declining due to increasing coastal population, urbanization …
Published in Journal of Remote Sensing & GIS · Vol. 7, Issue 1, 2016 · pp. 42–53 Read article
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Spatial Distribution and Health Risk Assessment of Pesticide Residues in Groundwater of a Condensed Agricultural Area in Punjab (India)
Abstract: Modern agricultural practices involve an increased use of pesticides to meet the food demand of increasing population which results in contamination of the environment. An experimental protocol to monitor the presence of pesticide residues in groundwater of Sangrur, Punjab (India), an intense agricultural area, was undertaken as part of the study. Liquid–liquid extraction followed by gas chromatographic detection was used for the determination of pesticide residues. It was found that …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 2, 2019 · pp. 37–46 Read article
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Soil Quality Assessment using GIS and Parameter Indexing Method
Abstract: AbstractThis study is conducted to examine the quality of soil in Chamarajanagara district, Karnataka, India, by using five different parameters such as Soil Parental Material, Soil Texture, Soil Depth, Soil Infiltration Capacity and Slope. Based on the quality, indexes were assigned for sub-parameters. Then soil quality was computed by using geographical information systems, which deals with spatially referenced raster and vector data. The result found that the soils were in …
Published in Research & Reviews : Journal of Agricultural Science and Technology · Vol. 5, Issue 1, 2016 · pp. 16–24 Read article
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Continuous Location-based Spatial Queries using a Proxy-based Approach
Abstract: AbstractThe intent of the paper is to obtain continuous location-based spatial queries using a proxy-based approach. Initially proxy creates estimated valid region for mobile clients. Using novel representation more effective EVRs of window queries are obtained. In this paper, index structures, EVR-tree and grid index are used for NN queries and window queries. To support for NN query answering and EVR updating, grid index is used. For performance evaluation several …
Published in Journal of Computer Technology & Applications · Vol. 6, Issue 1, 2015 · pp. 19–22 Read article
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Geo-spatial Predictions of Soil Organic Carbon: A Review
Abstract: Soil Organic Carbon (SOC) plays an important role in conservation of biophysical environment, i.e., biogeochemical cycles, soil fertility, water quality, atmospheric carbon control, temperature control, sustainable land management and food production. Geo-statistical techniques can be useful for precise estimations and preparation of high quality SOC maps essential for planning and monitoring the biophysical environment. Several studies have used geo-statistical techniques successfully for description of spatial patterns, quantitative modeling, spatial predictions …
Published in Journal of Remote Sensing & GIS · Vol. 5, Issue 2, 2014 · pp. 23–39 Read article
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Flood Risk Assessment and Disaster Management through Data Applications and Engineering Interventions
Abstract: Flooding is the most extreme and well-known destructive tournament and has serious implications for sustainable development. The vast majority of disasters in Africa are caused by floods, which are also the most frequent and widespread calamities. This paper x-rays alternative approaches to catastrophe management and flood risk assessment. Various methodologies, literature reviews and advanced techniques such as remote sensing, indicator-based methods, computer-based methods and utilization of geographic information systems (GIS) …
Published in Journal of Water Resource Engineering and Management · Vol. 9, Issue 2, 2022 · pp. 39–48 Read article
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Spatio-Temporal Variability Assessment of Biophysical Parameters in the Tropical Deciduous Broadleaf Forest in Eastern India
Abstract: In the recent years, study of phenology variation has taken significance quintessential part of a bigger research agenda of seasonal change. This study has attempted to (a) analyse the monthly, quarterly, inter-annual and seasonal variation of vegetation (b) observe the variation in phenological transition dates of tropical deciduous broadleaf forest in eastern India from 2001 to 2014 (c) correlation between NDVI (Normalized Difference Vegetation Index) and LST (Land Surface Temperature) …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 2, 2015 · pp. 61–68 Read article
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Impact of Urbanization on Biodiversity Hotspot: A Case of Bhubaneswar City
Abstract: Urbanization has contributed to pollution and generation of waste heat leading to changes in the urban heat balance thereby influencing its microclimate. Urban regions confront heightened heat wave conditions due to urban heat island (UHI) impact, which is a result of anthropogenic effects on both surface and atmospheric temperature patterns relative to the natural environment. The investigation was carried out in a 20-km radius around the city of Bhubaneswar. The …
Published in Journal of Remote Sensing & GIS · Vol. 15, Issue 3, 2024 · pp. 20–28 Read article
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Assessment of Liquefaction Potential Index for Sylhet City considering Maximum and Average Amplification Factor
Abstract: Soil liquefaction often occurs in saturated or partially saturated silty or sandy soil when an earthquake generates dynamic cyclic stress in the soil mass, reducing shear strength and stiffness. This study aims to assess the seismic soil liquefaction hazard potential for Sylhet City using shear wave velocity profiles of 49 boreholes. Factor of Safety (FOS) was evaluated taking into account shear wave velocity and maximum intensity of surface acceleration corresponding …
Published in Journal of Geotechnical Engineering · Vol. 8, Issue 2, 2021 · pp. 1–12 Read article
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GIS Based Approach for the Identification of Gaps in the Provision of Urban Amenities: A Comparison Between Srinagar and Jammu Urban Centers
Abstract: Urban amenities comprise the infrastructure, goods and services that are needed for the sustenance and growth of urban societies. Rapid urbanization and consequent unplanned growth of cities result in deterioration of infrastructure facilities and natural endowments. The reasons for the uneven distribution of urban amenities in Srinagar and Jammu are spurt urban growth and poor management planning. The paper examines provision of various urban amenities in Srinagar and Jammu cities …
Published in Journal of Remote Sensing & GIS · Vol. 8, Issue 3, 2017 · pp. 46–55 Read article
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Factors Affecting Adoption of Clean and Safe Milk Production Practices in Kerala
Abstract: The pattern of adoption of clean and safe milk production practices among 210 farmers selected from three districts Kollam, Thiruvananthapuram, and Palakkad was analyzed. An attempt was made for the development of the Clean and Safe Milk Production Index (CSMPI) based on the responses received from the farmers. The CSMPI associated with the risk of contamination hazard had thehighest mean score, whereas among all the indices, storage-related CSMPI values showed …
Published in Research and Reviews : Journal of Dairy Science and Technology · Vol. 11, Issue 3, 2022 · pp. 15–22 Read article
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Integrated Spatial and Statistical Assessment of Groundwater Quality in Rupbas Tehsil of Bharatpur, Rajasthan: A WQI-based Approach
Abstract: This study presents a comprehensive evaluation of groundwater quality in Rupbas Tehsil of Bharatpur District, Rajasthan, through the application of the Water Quality Index (WQI) and hydrogeochemical techniques. A total of 32 groundwater samples, 16 collected during the pre-monsoon and 16 during the post-monsoon seasons, were analyzed for key physicochemical parameters including pH, electrical conductivity (EC), total dissolved solids (TDS), dissolved oxygen (DO), oxidation-reduction potential (ORP), total hardness (TH), total …
Published in Journal of Water Pollution & Purification Research · Vol. 12, Issue 3, 2025 · pp. 84–93 Read article
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Spatio—Temporal Changes of Forest Cover in Baramulla District
Abstract: The present study aims to study the forest cover change detection in district Baramulla from 1980 to 2014. Normalized Deference Vegetation Index (NDVI) was used to measure the change detection. The images of two different time periods 1980 (MSS) and 2014 (OLI) have been used to measure the change detection in the study area. Spatial and Radiometric Enhancement has been carried out to improve the image quality. The resulted values …
Published in Journal of Remote Sensing & GIS · Vol. 8, Issue 3, 2017 · pp. 1–7 Read article
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Spatial Distribution and Species Diversity of Marine Bibalves Along the Rocky Intertidal Zone of Veraval, Gujarat, India.
Abstract: The rocky intertidal shoreline of Veraval, located along the Saurashtra coast of Gujarat, serves as a vital habitat for various marine organisms due to its unique composition of rocky- sandy patches and tidal pools. This study was undertaken to evaluate the diversity and spatial distribution of marine bivalves at the Jaaleshwar coast (20º 54’ 36.210’’ N, 70º 21’ 09.090’’ E). Field observations were carried out over nine months from July …
Published in International Journal of Marine Life · Vol. 3, Issue 1, 2026 · pp. 25–30 Read article
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Performance Analysis of Space Shift Keying and Quadrature Space Shift Keying for MIMO Channels
Abstract: In wireless communication the propagation channel is characterized by multipath propagation due to scattering on different obstacles. MIMO takes advantage of multi-path and uses multiple antennas to send multiple parallel signals from transmitter. “Multi-path” occurs when different signals arrive at the receiver at various times. MIMO exploits the space dimension to improve wireless systems capacity, range and reliability. There are two different modulation techniques that exploits the best features of …
Published in Research & Reviews : Journal of Space Science & Technology · pp. 46–55 Read article