scholarly journals Design With Nature 2.0 – A Geodata Infrastructure Approach to Map Overlay

2021 ◽  
Author(s):  
Claus Rinner ◽  
Martin Düren
Keyword(s):  
Natural Hazard ◽  
Layer Model ◽  
Data Infrastructure ◽  
Design With Nature ◽  
Web Map ◽  
Thematic Mapping ◽  
Visual Approach ◽  
Hazard Risk Assessment ◽  
Overlay Approach

McHarg's "Design With Nature" was a precursor of the layer model in modern geographic information systems. We are reviewing the layer overlay approach from a geospatial data infrastructure (GDI) perspective and experiment with weighted map overlay using Web map services. A case study for natural hazard risk assessment for Southern Quebec illustrates this visual approach to multi-criteria analysis using online mapping. We conclude with a call for more research on thematic mapping and its use for decision support within GDIs.

scholarly journals Design With Nature 2.0 – A Geodata Infrastructure Approach to Map Overlay

2021 ◽  
Author(s):  
Claus Rinner ◽  
Martin Düren
Keyword(s):  
Natural Hazard ◽  
Layer Model ◽  
Data Infrastructure ◽  
Design With Nature ◽  
Web Map ◽  
Thematic Mapping ◽  
Visual Approach ◽  
Hazard Risk Assessment ◽  
Overlay Approach

McHarg's "Design With Nature" was a precursor of the layer model in modern geographic information systems. We are reviewing the layer overlay approach from a geospatial data infrastructure (GDI) perspective and experiment with weighted map overlay using Web map services. A case study for natural hazard risk assessment for Southern Quebec illustrates this visual approach to multi-criteria analysis using online mapping. We conclude with a call for more research on thematic mapping and its use for decision support within GDIs.

scholarly journals Planning and co-creation of Quadrilatero Ferrifero cultural landscape

2021 ◽  
Vol 16 (3) ◽  
Author(s):  
Ana Clara Mourão Moura ◽  
Christian Rezende Freitas ◽  
Camila Fernandes Morais ◽  
Ítalo Sousa Sena ◽  
Pedro Benedito Casagrande
Keyword(s):  
Spatial Data ◽  
Cultural Landscape ◽  
Landscape Planning ◽  
Data Infrastructure ◽  
Environmental Disasters ◽  
Web Map ◽  
Iron Quadrangle ◽  
Quadrilátero Ferrífero ◽  
To Receive

The article presents results about Geodesign studies of the Iron Quadrangle (Quadrilátero Ferrífero – QF) that are under development since 2016, based on economic, environmental, and social approaches, with the goal to promote cultural landscape planning based on shared process, giving support to collective and individual opinion making. This paper has the goal do present the Brazilian Geodesign platform, called “GISColab”, that was first tested in QF case study. The QF area is characterized by conflicts of interests due to mining activities, urban growth, cultural heritage landscapes and the presence of areas of environmental protection. QF is especially important as part of the economic structure of the state of Minas Gerais (Brazil) but became globally known due to a couple of environmental disasters that caused the death of almost 300 people. In the first studies we used Steinitz´s framework (2012), but some difficulties in the process were observed, what led to the proposal of a new platform and framework, more adapted to inequalities related to access and use of information, so that people could really act as participants of all the steps. The new web-platform is based on Spatial Data Infrastructure (SDI), which receives a considerable amount of data and is open to receive further information via Web Map Service (WMS), which guarantees the users will construct, by themselves, judgments about these areas. It presents a shared process of decision making by digital dialogues, as by voting based on Delphi method. The platform and process are based on geovisualization, interoperability and the co-creation of ideas based on geo-collaboration.

scholarly journals Evaluating the Performance of Three Popular Web Mapping Libraries: A Case Study Using Argentina’s Life Quality Index

2020 ◽  
Vol 9 (10) ◽  
pp. 563
Author(s):  
Alejandro Zunino ◽  
Guillermo Velázquez ◽  
Juan Pablo Celemín ◽  
Cristian Mateos ◽  
Matías Hirsch ◽  
...  
Keyword(s):  
Life Quality ◽  
Web Technologies ◽  
Web Mapping ◽  
Network Bandwidth ◽  
Web Map ◽  
Raster Maps ◽  
Dynamic Web ◽  
Network Usage ◽  
Overall Performance

Recent Web technologies such as HTML5, JavaScript, and WebGL have enabled powerful and highly dynamic Web mapping applications executing on standard Web browsers. Despite the complexity for developing such applications has been greatly reduced by Web mapping libraries, developers face many choices to achieve optimal performance and network usage. This scenario is even more complex when considering different representations of geographical data (raster, raw data or vector) and variety of devices (tablets, smartphones, and personal computers). This paper compares the performance and network usage of three popular JavaScript Web mapping libraries for implementing a Web map using different representations for geodata, and executing on different devices. In the experiments, Mapbox GL JS achieved the best overall performance on mid and high end devices for displaying raster or vector maps, while OpenLayers was the best for raster maps on all devices. Vector-based maps are a safe bet for new Web maps, since performance is on par with raster maps on mid-end smartphones, with significant less network bandwidth requirements.

scholarly journals MATLAB Virtual Toolbox for Retrospective Rockfall Source Detection and Volume Estimation Using 3D Point Clouds: A Case Study of a Subalpine Molasse Cliff

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 75
Author(s):  
Dario Carrea ◽  
Antonio Abellan ◽  
Marc-Henri Derron ◽  
Neal Gauvin ◽  
Michel Jaboyedoff
Keyword(s):  
Point Cloud ◽  
Natural Hazard ◽  
Point Clouds ◽  
Volume Estimation ◽  
Natural Phenomena ◽  
Frequency Distributions ◽  
Erosion Rates ◽  
3D Point Clouds

The use of 3D point clouds to improve the understanding of natural phenomena is currently applied in natural hazard investigations, including the quantification of rockfall activity. However, 3D point cloud treatment is typically accomplished using nondedicated (and not optimal) software. To fill this gap, we present an open-source, specific rockfall package in an object-oriented toolbox developed in the MATLAB® environment. The proposed package offers a complete and semiautomatic 3D solution that spans from extraction to identification and volume estimations of rockfall sources using state-of-the-art methods and newly implemented algorithms. To illustrate the capabilities of this package, we acquired a series of high-quality point clouds in a pilot study area referred to as the La Cornalle cliff (West Switzerland), obtained robust volume estimations at different volumetric scales, and derived rockfall magnitude–frequency distributions, which assisted in the assessment of rockfall activity and long-term erosion rates. An outcome of the case study shows the influence of the volume computation on the magnitude–frequency distribution and ensuing erosion process interpretation.

scholarly journals An Input–Output Ex Ante Regional Model to Assess the Short-Term Net Effects of the 16 April 2016 Earthquake in Ecuador

2021 ◽  
Author(s):  
Jorge Salgado ◽  
José Ramírez-Álvarez ◽  
Diego Mancheno
Keyword(s):  
Natural Hazard ◽  
National Accounts ◽  
Input Output ◽  
Short Term ◽  
Ex Ante ◽  
The Impact ◽  
Consumption Demand ◽  
Two Sectors ◽  
Positive Effect

AbstractThe 16 April 2016 earthquake in Ecuador exposed the significant weaknesses concerning the methodological designs to compute—from an economic standpoint—the consequences of a natural hazard-related disaster for productive exchanges and the accumulation of capital in Ecuador. This study addressed one of these challenges with an innovative ex ante model to measure the partial and net short-term effects of a natural hazard-related catastrophe from an interregional perspective, with the 16 April 2016 earthquake serving as a case study. In general, the specified and estimated model follows the approach of the extended Miyazawa model, which endogenizes consumption demand in a standard input–output model with the subnational interrelations and resulting multipliers. Due to the country’s limitations in its regional account records the input–output matrices for each province of Ecuador had to be estimated, which then allowed transactions carried out between any two sectors within or outside a given province to be identified by means of the RAS method. The estimations provide evidence that the net short-term impact on the national accounts was not significant, and under some of the simulated scenarios, based on the official information with respect to earthquake management, the impact may even have had a positive effect on the growth of the national product during 2016.

A Framework of Local Geospatial Data Infrastructure for Sustainable Urban Development

2014 ◽  
Vol 71 (4) ◽  
Author(s):  
Azman Ariffin ◽  
Nabila Ibrahim ◽  
Ghazali Desa ◽  
Uznir Ujang ◽  
Hishamuddin Mohd Ali ◽  
...  
Keyword(s):  
Urban Development ◽  
Spatial Data ◽  
Geospatial Data ◽  
Sustainable Urban Development ◽  
Data Infrastructure ◽  
Shape Category ◽  
Key Dimensions ◽  
Data Layers ◽  
Conceptual Data

This paper addresses the need to develop a Local Geospatial Data Infrastructure (LGDI) for sustainable urban development. This research will highlight the effective and efficient framework for the development of local infrastructure. This paper presents a framework (a combination of domain based and goal based frameworks) for developing a Local Geospatial Data Infrastructure. The basis of this research is on a case study conducted in a Malaysian city. The main focus of the case study was on measuring and assessing sustainability. Six conceptual frameworks were produced based on 6 key dimensions of sustainability. The developed framework consists of 6 conceptual data models and 6 conceptual data structures. It was concluded that 30 spatial data layers are needed of which 12 data layers are categorized as point shape, 17 data layers are categorized as polygon shape and 1 data layer as line shape category.

scholarly journals CREATION OF THE WEB-MAP OF THE BOGUSLAVSKY DISTRICT

2019 ◽  
pp. 129-139
Author(s):  
Tamara Mykolayivna Kurach ◽  
Iryna Aleksandrovna Pidlisetskaya
Keyword(s):  
Cultural Heritage ◽  
Theoretical Basis ◽  
Large Scale ◽  
Web Mapping ◽  
Heritage Sites ◽  
Web Map ◽  
Thematic Mapping ◽  
Interactive Map ◽  
The Web

The goal is to develop a tourist interactive map "Landmarks of Bohuslav". The methodology. The methodological and theoretical basis of the study is modern geographical and cartographic science in the field of thematic mapping with the involvement of web-mapping technologies. Results. A large-scale tourist web map of the cultural heritage of the Boguslavsky region - “Sights of Boguslavshchina” was created. Scientific novelty. Approbation of the methodology and technology for the development of interactive large-scale web maps of tourism topics involving the Leaflet JavaScript library. Practical value. An interactive tourist web map of the historical and cultural heritage sites “Sights of Bohuslavshchina” will be published on the website of the health-improving institution of sanatorium-type “Chaika”. Convenient using, visualization, prompt receipt of information will help to increase the attractiveness of tourist Boguslavschina routes.

scholarly journals Exploring collaboration within social housing retrofit practice for an ageing population: a single case study in the West of Scotland

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Dayna Rodger ◽  
Nicola Callaghan ◽  
Craig Thomson
Keyword(s):  
Social Housing ◽  
Single Case ◽  
Well Being ◽  
Unintended Consequences ◽  
Ageing Population ◽  
Single Case Study ◽  
Content Type ◽  
Data Infrastructure ◽  
The Social

Purpose Sustainably addressing the social and economic demands from an ageing population is a major global challenge, with significant implications for policy and practice. This is resultant of the increasing demand for housing adaptations to prevent increased pressure upon acute health services. Through the lens of institutional theory, this paper aims to explore the levels of joined-up retrofit practice within a Scottish social housing provider, under a constructivist approach. Design/methodology/approach An exploratory single case study of a Scottish local authority was undertaken. Within this, nine key stakeholders were interviewed, taking a hierarchical approach, from director to repair and maintenance staff. Results were analysed by using Braun and Clarke’s six stages of thematic analysis. Findings There is a need for greater levels of integration within retrofit practice to not only improve the health and well-being of the older population but also increase efficiency and economic savings within public services. Currently, there are key issues surrounding silo-based decision-making, poor data infrastructure, power struggles and a dereliction of built environment knowledge and expertise, preventing both internal and external collaboration. However, housing, energy and health have interlinking agendas which are integral to achieving ageing in place. Therefore, there must be system-wide recognition of the potential benefits of improved cross-sector collaboration, preventing unintended consequences whilst providing socioeconomic outcomes. Originality/value This research provides a new perspective surrounding retrofit practice within the context of an ageing population. It highlights the requirement for improved cross sector collaboration and the social and economic cost of poor quality practice.

scholarly journals TESTING THE POSITIONAL ACCURACY OF OPENSTREETMAP DATA FOR MAPPING APPLICATIONS

2016 ◽  
Vol 42 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Khalid l. A. El-Ashmawy
Keyword(s):  
Local Area ◽  
Transportation Systems ◽  
Comparative Approach ◽  
Construction Sites ◽  
Positional Accuracy ◽  
Web Mapping ◽  
Web Map ◽  
Land Surveying ◽  
Preliminary Planning

OpenStreetMap, a web mapping platform, is the most popular web map source for use in locationbased services with specific emphasis on pedestrian navigation, tourist guide applications, and other location-based search applications. This paper tests the positional accuracy of OpenStreetMap for the mapping applications using the case study in the campus of UMM El-Qura University, Makah, Saudi Arabia. The proposed testing method consists of statistical comparative approach using OpenStreetMap data and accurate land surveying reference data. The results show that OpenStreetMap data has positional accuracy of 1.57 m which is suitable for generating planimetric maps of scale 1:5000 or smaller. The obtained results open the door for using the OpenStreetMap maps for applications such as general preliminary planning where larger areas are covered but only moderate accuracy is needed. Applications include mapping the general layout of potential construction sites, proposed transportation systems, and existing facilities. The proposed methodology in this paper is of great interest to small engineering firms for the generation of local area maps from OpenStreetMap data.

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