Web-based GIS Research Articles

Development of a localized Web-based GIS Visualization Platform as a tool for Disseminating Habitat Abundance of Aedes Mosquito Vectors in the Philippines

Abstract. Disseminating up-to-date information on dengue mosquito habitats aided by modern GIS approach would yield benefits to people being informed on the localized developments of the vector and therefore reduce people’s risk of being affected by the disease. This paper discusses the development of this monitoring and sensing mechanism through a Web-based GIS mapping and visualization. It utilizes the environmental, WHO dengue indices and weather information for a case of a city in the Philippines to visualize hotspot areas for habitats of dengue vectors. The paper would aid the government in deploying key assets and supporting DOH’s 5S drive or Search, Self, Seek, Support and Sustain strategy to curtail the spread of the disease. Through this paper, the author intends to develop a localized web-based platform Aedes mosquito vector. Presented in this study provides the data workflow from field observations and the inputs from environmental and meteorological data which has the potential to help enhance the data dissemination as well as the IEC campaign of local health leaders in reducing the mortality and morbidity of people affected by Dengue mosquitoes. This visualization platform includes an easy to set-up system using the available Web-based GIS which can be updated depending on the availability of field data and meteorological observations.

Landslide Rapid Impact Assessment at Hydro Dam via THyCAS and UAS

The TNB Hydro Catchment Area Surveillance (THyCAS) is a web-based geographic information system (GIS) used to monitor hydropower dam catchment areas in Peninsular Malaysia. It can also be used for landslide rapid impact assessment by monitoring the surrounding landslide area. However, during the rainy season, satellite images are unable to provide the information required by users due to full cloud cover. Therefore, an Unmanned Aircraft System (UAS) is used to provide the data required by THyCAS by mapping the surrounding area affected by landslides and uploading the processed data in THyCAS. Thus, the user can get the required information regarding the landslide incident. Furthermore, with UAS Full Motion Video (FMV) data, the location of the collapsed power transmission towers can be acquired. In addition, any information on land changes that could jeopardise the surrounding dam area is gathered. Therefore, with the information from the rapid impact assessment provided by THyCAS and UAS data, a preliminary risk assessment plan can be established and implemented by the relevant parties. The results obtained from the rapid assessment can also be used as additional information to find out the actual cause of landslides in the area.

Feasibility study of establishing an integrated geographic information system: a case study of medical libraries

PurposeMedical libraries can extend their resources’ accessibility by creating a network through web-based geographical information system (WEBGIS) that connects physical and non-physical resources. Geographical information system (GIS allows) libraries to create strong connections with other libraries by establishing a shared server for loading and using digital information. This research aims to explore the feasibility of creating a unified GIS-based service system for medical libraries.Design/methodology/approachThe target population for this study includes a total of 32 medical libraries across three medical universities (in this case called A, B and C). A researcher-designed 34-item questionnaire was applied in this study.FindingsFindings revealed that the libraries affiliated with University A have the highest average (46.54%) and better situation in terms of all of the needed infrastructures. Furthermore, in terms of the technical infrastructure required for implementing the integrated WEBGIS, the libraries of University B are in a better situation in comparison with other libraries (64.55%). Weak technical infrastructure belongs to libraries affiliated with University C, with 59.17% availability of infrastructure. The findings underscored the existing gaps in various aspects and highlighted the need for further improvements, particularly in financial and legal aspects, to enhance the overall availability of infrastructure.Originality/valueThis study was conducted for the first time in medical science libraries. The findings of this research shed light on the shortages within the surveyed universities in terms of human infrastructure. Results highlight the need for financial, legal and technical support to bridge the gap between the current status and the desired situation. By focusing on improving the various infrastructural aspects, libraries can foster a conducive environment for the effective utilization of spatial information systems, ultimately benefiting academic research, education and overall information management in the field of medical sciences.

Dynamic web-based GIS tool for pre-feasibility evaluation of renewable energy projects

The high energy consumption and the large amount of emissions associated with roads life cycle makes it necessary for the administrations involved to invest in the implementation of renewable energy technologies on adjacent lands so that the net balance between CO2 emitted and CO2 saved is zero, thus helping to decarbonize the transport networks. To facilitate the first step in the long process leading up to the construction of wind and solar farms, a user-friendly tool is here presented that allows an early-stage evaluation of renewable energy projects. The ENROAD web-based GIS tool, through a functional, modern, intuitive, and ergonomic graphical user interface aimed at non-specialized users, optimizes the use of photovoltaic and wind technologies based on shading and wake losses, respectively, taking into account the solar radiation and wind conditions of the location and the geometry of the area selected by the user. In addition, the tool provides a thorough financial analysis, incorporating the effects of user-defined long-term interest rates, inflation rates, loan costs and efficiency losses on the Levelized Cost of Energy as well as traditional financial metrics, enabling users to conduct insightful if-then simulations. While this tool cannot have the precision of the in-depth study needed for the design of complex renewable energy facilities, it can facilitate the decision making by the administrations. Finally, a case study and a validation section have been included to demonstrate the technical and financial evaluation provided by ENROAD and ensure that the results provided are reasonable and accurate enough.

Geographic Information System for Mapping Deployment Areas Dengue Fever in Umalulu District

Dengue fever is a disease caused by the dangue virus, causing serious health problems, especially in Umalulu sub-district, East Sumba Regency which has an area of 307.90 km2 and consists of 10 villages, each of which has an impact on dengue cases. This study aims to map the area of the spread of dengue fever in real time in Umalulu sub-district using a Geographic Information System (GIS), which is currently experiencing the problem of an increase in the number of dangue hemorrhagic fever cases and assistance that has not been targeted. The research method used is Waterfall, which follows the stages of planning, data collection, system analysis and design, implementation, and maintenance. Based on black box testing, this research succeeded in producing a web-based GIS that maps the dengue fever distribution areas in showing that the Lumbukore village is the area that has the highest number of cases with 12 and the Ngarukanoru village with the lowest area with 0 cases, with an average of many cases occurring in March and April of 2024 in Umalulu District, allowing users to analyze dengue disease distribution patterns provide recommendations for prevention and control measures for dengue disease more accurately and on target.

The Development of web-based GIS for Earthquakes Analysis and Evaluation

The Development of web-based GIS for Earthquakes Analysis and Evaluation

Development of the Volcanic Disaster Risk Reduction Education Program Using the ICT Tool “YOU@RISK Volcanic Disaster Edition” —Practical Verification at a Junior High School in the Mt. Nasu Area—

This study developed a volcanic disaster risk reduction education program that aims to help junior high school students visually understand the risks of volcanic eruptions using map information and acquire independent assessments and actions to protect their own lives from eruption disasters. First, this program analyzed the present state, problems, and educational needs of volcanic disaster risk reduction education in Japan, and thereafter designed the learning content to fuse information and communication technology (ICT) education based on the Global and Innovation Gateway for All (GIGA) School Initiative promoted by Japan with disaster risk reduction education from a geographical viewpoint. We adopted the ADDIE model from instructional design theory to develop the program. An important feature of this program is the realization of geography learning using the “YOU@RISK Volcanic Disaster Edition,” a web-based GIS application developed by the National Research Institute for Earth Science and Disaster Resilience (NIED), as an ICT tool. Learners use YOU@RISK on their tablets and perform operations such as visualizing the risk range in the event of a volcanic eruption and searching for appropriate evacuation sites and routes, while acquiring the knowledge and skills necessary for geographical literacy and emergency response actions. The program is able to realize interactive learning, which is a step ahead of education that relies on conventional paper-based hazard maps. Among active volcanoes nationwide, Mt. Nasu was selected as target volcano for this study. In addition, a junior high school located in the area surrounding Mt. Nasu, Nasu Junior High School in Nasu Town, Tochigi Prefecture, was selected as the target school. The program was implemented by teachers using tablets provided for each student at the school. We evaluated the effectiveness of the program by measuring and analyzing the effects of learning through the practice. Consequently, the effectiveness of the volcanic disaster risk reduction education program using ICT was confirmed.

CataEx: A multi-task export tool for the Google Earth Engine data catalog

Satellite imagery is provided by different missions such as ASTER, MODIS, Sentinel, Landsat, IKONOS, GeoEye, SPOT, WorldView, Pléaides, or RapidEye. One of the major encumbrances is the digital volume that satellite imagery claims during download, storage, and processing. This inconvenience has been overcome since 2010 by the Google Earth Engine, a cloud-based platform for global geospatial analysis dedicated to users who are not necessarily remote sensing specialists.However, compatibility with traditional desktop or web-based GIS software remains tricky as bringing satellite imagery from the Google Earth Engine to another software requires a coded export via JavaScript or Python.We present the multi-functional code tool CataEx in JavaScript to exemplify several essential types of computations (i.e., filtering of image collections, cloud masking, index and histogram generation, and layer creation) before exporting images as GeoTIFFs. CataEx is kept deliberately simple without much "sophisticated" code language to allow JavaScript beginners to get familiar with basic coding concepts and develop their own scripts.

Eksplorasi Pemetaan Pelanggan dan Prioritas Pengembangan Jaringan Internet : Pendekatan Sistem Informasi Geografis Berbasis Web dan AHP

ArsyaNet, a local internet service provider, strives to deliver fast and reliable internet access to its customers. This study aims to implement a web-based Geographic Information System (GIS) for customer mapping and network development prioritization using the Analytic Hierarchy Process (AHP) method at ArsyaNet. Leaflet is employed to map the distribution of ArsyaNet customers within the RT/RW network in the Pringgasela District. The main objective of this research is to accurately and efficiently map the distribution of internet customers to support optimal network development. By integrating AHP into the GIS, customer preferences and other relevant factors such as access speed, service quality, and infrastructure needs in specific areas will be considered in determining the priority locations for network development. The AHP method allows for the grouping of customers based on their preferences and determining locations by considering weights on each relevant aspect. Integrating Leaflet into the GIS enables accurate and interactive mapping results using a lighter map compared to the Google Maps API. This research is conducted to enhance the quality of internet services provided by ArsyaNet by better understanding the needs and preferences of customers in selecting internet service providers and their customer distribution.

WebGIS Open-source Platform for Localizations of New P2G Plants in Sicily

The climatic emergency that involves the globe has led targets of greenhouse gas reduction in the EU and all over the world. In this scenario, recent advances in renewable renewable energy sources (RESs) have focused interest on the diffusion of power supplies that are produced by photovoltaic and wind plants. The non-programmable nature of these energy sources has led recent studies to consider the power-to-gas (P2G) solution as an opportunity for employing the curtailed electric energy by converting it into hydrogen. The localizations of P2G plants depend on several factors regarding power production, distances, and population distributions. The necessity of integrating these factors led this work to study the development of a cost function that is hosted by a webbased GIS (geographic information system) platform, thus allowing for the storage, elaboration, and web fruition of an entire data set that is related to the possible new localizations of P2G plants. The structure is based on open-source technology and creates a solution that is easily employable by specialists. The developed platform is composed of different remotely connected blocks that are solely based on open-source technology and is focused the interest on the territory of Sicily (Italy). GIS software, a RDBMS database, a geospatial server (Geoserver ), a Python optimization module, and a WebGIS visualizer are integrated. This work represents a scientific contribution to the management of energy sources, with a particular focus on policies that are based on hydrogen technology. In fact, different data sets that contain several levels of information that are related to the management and the localization of P2G plants will be even further employed in the future.

Peta Digital Kependudukan Berbasis QGIS: Inovasi Teknologi untuk Visualisasi Data kependudukan dan Populasi di Dusun Mrisi, Kabupaten Bantul, Daerah Istimewa Yogyakarta

Digital mapping has become a valuable tool for managing and visualizing geographical information. In this context, this community service aims to create a digital map using WebGIS in Mrisi Hamlet. Mrisi requires accurate and efficient mapping of population data to optimize data collection methods. This is to make decisions related to regional development, and map resources such as UMKM. This activity method involves collecting spatial and attribute data through field surveys, remote sensing, and relevant secondary data sources. The data obtained is then processed and compiled into a web-based geographical information system. In developing digital maps, WebGIS was chosen because it provides easy accessibility, interactive data visualization, and the ability to share geographical information with other users. This activity results in a digital map that includes various relevant information about Mrisi Hamlet. The map includes area boundaries, infrastructure, land use, public facilities location, and other related information. These digital maps are internet-based access and use decision-making by local governments, communities, and other related parties.

A WebGIS-Based System for Supporting Saline-Alkali Soil Ecological Monitoring: A Case Study in Yellow River Delta, China

The monitoring and evaluation of soil ecological environment is very important to ensure the saline-alkali soil health and the safety of agricultural products. It is of foremost importance to, within a regional ecological risk-reduction strategy, develop a useful online system for soil ecological assessment and prediction to prevent people from suffering the threat of sudden disasters. However, the traditional manual or empirical parameter adjustment causes the mismatch of the hyperparameters of the model, which cannot meet the urgent needs of high-performance prediction of soil properties using multi-dimensional data in WebGIS system. For the end, this study aims to develop a saline-alkali soil ecological monitoring system for real-time monitoring of soil ecology in the Yellow River Delta, China. The system applied advanced web-based GIS, including front-end and back-end technology stack, cross-platform deployment of machine learning models, and a database embedded in multi-source environmental variables. The system adopts a five-layer architecture and integrates functions such as data statistical analysis, soil health assessment, soil salt prediction and data management. The system visually displays the statistical results of air quality, vegetation index and soil properties in the study area. It provides users with ecological risk assessment functions to analyze soil heavy metal pollution. Specially, the system introduces a tree structured Parzan estimator (TPE) optimized machine learning model to achieve accurate prediction of soil salinity. The TPE-RF model had the highest prediction accuracy (R2 = 94.48%) in the testing set in comparison with the TPE-GBDT model, which exhibited the strong ability for the nonlinear relationship between environmental variables and soil salinity. The system developed in this study can provide accurate saline-alkali soil information and health assessment results for government agencies and farmers, which is of great significance for agricultural production and saline-alkali soil ecological protection.

Geographic Information System Mapping of Location Distribution Homestay Area Waingapu City Sumba Web-Based East Sumba

Based on the results of the identification of the needs of tourists looking for lodging in the city of Waingapu, there is a lack of spatial information (latitude and longitude), non-spatial (owner's name, price, facilities, address, contact) with the nearest route. Although available on google maps, it is still lacking because it is still incorporated with hotels, boarding houses and other housing. Therefore, a Web-based Geographic Information System for Mapping the Distribution of Homestay Locations in the Waingapu City Area of East Sumba is made to provide recommendations to tourists who need lodging in accessing Homestayinformation by determining the user's location point and the nearest Homestay will appear. Maps will direct to the location of the selected lodging house accompanied by the desired information. This system was built using the PHP programming language with the MySQL Database. The method used in this research is the Waterfall model for system development and Euclidean Distance for the calculation of the closest distance.

A Sand Boil Database for Piping Risk Management in the Po River, Italy

Sand boil formation at the toe of river embankments is the typical manifestation of the initiation and progression of an internal erosion process known as backward erosion piping, which is recognized to be a major concern in many river systems worldwide. In Italy, more than 130 sand boils have been detected along the Po River, many of them experiencing recurrent reactivations during high-water events. In recent years, as part of the activities of the European project LIFE SandBoil, the Italian authority responsible for flood protection and flood damage reduction along the Po River has implemented a GIS-based web application to catalogue the sand boils observed in its operating area. The resulting database allows keeping records of a comprehensive and varied set of information, in terms of predisposing factors, initiation conditions and surface effects. Taking as a reference a well-documented cross-section of the Po River prone to piping, this paper describes the main features of this versatile and flexible tool, whose long-term aim is to support vulnerability studies and the development of risk maps against piping. The database, which might also accommodate data from different river basins, is thus meant to help in flood risk management, by suggesting priorities for the implementation of mitigation measures and allowing the monitoring of intervention effectiveness.

DEVELOPMENT OF A WEBGIS FOR SOLAR PV RESOURCE AND INSTALLATION ASSESSMENT USING GEOSPATIAL TECHNOLOGIES

Abstract. The SINAG Web Portal, a web-based GIS platform that hosts spatial data and a forecasting model for solar PV installation assessment, serves as a repository for the products and outputs of the SolarPot and OutSolar components of a research project called Solar PV Resource and Installation Assessment Using Geospatial Technologies (SINAG). The website was developed with frontend and backend services which involved the use of a content management system, database systems, cloud virtual machines, Linux operating systems, programming languages, specifically Python and JavaScript, and a style scripting framework. All outputs generated by the two components of Project SINAG are stored on the dedicated cloud server of the website. It includes processed spatial data, a graphical summary of the created models, the ability to explore historical data, data requests and downloads, and the use of mapping tools. It is anticipated that the web portal will play a significant role in the assessment and decision-making process for selecting candidate sites for installing solar PV systems across the Philippine archipelago.

A digital twin prototype to visualize heterogeneous seismic damage simulation results on web-GIS

ABSTRACT Access to a wide range of information tailored to specific purposes, including extensive damage projections and statistics for target areas and the potential for individual building and dwelling damage predicted through simulations, enhances cities’ resilience against large-scale earthquakes. Recognizing the significance of this, we have developed a prototype of a digital twin capable of comprehensively visualizing various simulations on a web-based geographic information system (GIS) platform. This prototype employs three seismic damage simulators: the Integrated Earthquake Simulation for area damage, the wallstat for wooden houses, and the E-Simulator for a reinforced concrete building. A trial of earthquake damage simulations was conducted to assess this prototype’s efficacy, focusing on the damage incurred in Mashiki Town during the 2016 Kumamoto earthquake. The trial successfully verified the capability of the system to visualize and integrate various types of simulation data alongside records obtained from actual earthquake disasters. This paper provides an overview of the digital twin prototype. It reports on the trial’s results, focusing on the visualization and integration achieved through this trial.

Biodiversity dataset and atlas of the special area of conservation Montesinho/Nogueira, Portugal.

The special area of conservation Montesinho/Nogueira (SAC-MN) is a key area for biodiversity conservation in the Iberian Peninsula. Covering an area of approximately 1081 km² in the northeast of Portugal mainland, the SAC-MN is home to a wide range of species, including several endemic and endangered species and priority habitats. Despite its ecological significance and importance for conservation, there is a lack of publicly available biodiversity data, which urges the need to create a comprehensive and up-to-date biodiversity dataset for the SAC-MN. To bridge the knowledge gap on biodiversity in SAC-MN, we undertook a thorough data collection process, including species occurrence records and conservation status information at regional (Portugal) and European levels, from multiple sources. We collected and compiled this information for five major taxonomic groups (amphibians, birds, flora - vascular plants, mammals and reptiles) in SAC-MN, resulting in a total of 31,871 records with 1,312 documented species. In addition, we developed an easy-to-navigate web-based geographic information system (Web GIS). In this article, we present an in-depth report on the process of compiling and preparing data, as well as the development and design of our Web GIS to increase awareness and enhance understanding of the importance of preserving biodiversity in SAC-MN.

AquMADE: A GIS-based web application to assess groundwater quality by introducing a risk-based irrigation water quality index (RB-IWQI)

Groundwater quality monitoring plays a vital role in effective water management across all groundwater basins. The provision of decision support systems can assist decision-makers in strategic planning and the conservation of groundwater resources. In this study, AquMADE—a user-friendly and comprehensive web application—is developed to integrate GIS and multi-criteria decision-making methods seamlessly for modifying the irrigation water quality index. AquMADE serves multiple functionalities. Firstly, it empowers decision-makers to import, interpolate, and visualize collected data, enabling a holistic view of the information at hand. Secondly, it offers the flexibility for decision-makers to adjust the weights of various parameters through the utilization of the analytical hierarchy process, taking into consideration their risk attitudes during the aggregation process using ordered weighted averaging method. Finally, the incorporation of sensitivity analysis methods allows for the evaluation of the impact of changes in inputs, such as criteria weights and aggregation methods, on the resulting outputs. The system underwent user testing in Khoy City, Iran, where it received positive feedback. The assessment revealed that the system performed satisfactorily in terms of functionality, interactivity, and ease of use.

Web-Based Geographic Information System for Location Based Healthcare Service Delivery within Akure Metropolis

Purpose: This research project addresses the pressing issue of healthcare access within Akure Metropolis, Nigeria, through the development of a web-based Health Geoinformation System (HGS). Akure, like many urban centers in developing countries, faces significant challenges in healthcare delivery, including uneven distribution of facilities and limited access to reliable health information. In response to these challenges, this study leverages Geographical Information System (GIS) technology to create an innovative solution aimed at enhancing accessibility and information dissemination. Grounded in the context of Nigeria's healthcare system, the research identifies the need for an integrated approach to address the complex spatial dynamics of healthcare provision.
 Materials and Methods: Methodologically, the project combines primary data collection on the characteristics of health facilities in Akure with secondary data sources, including existing health records. A total of 100 healthcare facilities were located and identified for this study, with comprehensive information collected through three sets of questionnaires directed to healthcare facility managers and professionals, hospital management bodies, and the public. The data collection process employed Binary Logistic Regression to test research hypotheses, with charts utilized to represent public responses to the posed questions. Spatial representation and analysis were central to this study, with techniques such as Nearest Neighbor Analysis employed to assess the distribution and accessibility of health facilities.
 Findings: The results from this analysis revealed significant spatial patterns and disparities in healthcare facility distribution within Akure Metropolis. Notably, the study found that a developed web-based system having user-friendly functionalities like facility search, mapping, and route selection, among others, aids individuals in making informed decisions about their healthcare options.
 Implications to Theory, Practice and Policy: The results underline the potential of web-based systems to enhance healthcare access and decision-making processes in urban areas like Akure and further emphasize the significance of incorporating GIS technology into healthcare service delivery.

An open web-based GIS service for biomass data in Finland

Reliable, up-to-date biomass data are needed for climate change mitigation and resource efficiency. Therefore, a calculation and reporting tool with thematic maps and data was developed. A free web-tool, Biomass Atlas, collects the spatial distribution of biomasses in Finland. Over 300 data layers present land use, cultivation, residual biomasses from forest, crop production, animal husbandry, municipalities, and industry at 1 km2 spatial resolution. The service enables calculations of biomass amount in a defined geographical area of interest and examining the opportunities and restrictions to utilise biomasses. The service was evaluated with six test-users in laboratory tests and 20 voluntary pilot test-users. Biomass Atlas shows the regional potential of biomaterials, fertilizer products, and renewable energy, as well as potential targets for utilized, recyclable biomass. Other possible uses include monitoring plant cover on fields and assessing land use diversity. Application enables users with no experience in GIS or biomass assessments to analyse biomass resources, produce maps and data summaries for decision making.