Triangular irregular network generation and topographical modeling

Huang, Yih-Ping

doi:10.1016/0166-3615(89)90067-5

Cited by 14 publications

(9 citation statements)

References 9 publications

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“…Afterward, a TIN mesh is generated based on the point cloud (in the condition after sampling and cleaning). The TIN mesh is created by linking triplets of nodes to form non-overlapped triangles [47]. Ideally, if every portion of the object's surface is meticulously surveyed, this mesh could be already watertight.…”

Section: Fe Mesh Generationmentioning

confidence: 99%

Stability analysis of leaning historic masonry structures

D’Altri

Miranda

Castellazzi

et al. 2018

Automation in Construction

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This paper introduces an automatic, powerful and easy to use procedure for undertaking stability analyses of leaning historic masonry structures, based on an upper bound finite element limit analysis (FELA) approach. The procedure proposed here consists of a comprehensive workflow which involves the automatic point cloud manipulation, the 3D mesh generation of the actual geometry for structural purposes (e.g. FE mesh), and a two-step FELA that reduces drastically optimization variables assuming only active few elements inside a restricted processing zone. To generalize the Heyman's intuition to complex real geometries, the use of a 3D upper bound FELA with a recursive kernel of variables reduction becomes necessary for a precise evaluation of the limit inclination that makes the structure collapse under gravity loads. This outcome permits to estimate the structural health condition of a historic structure by comparing the critical inclination angle with the actual one. To demonstrate the effectiveness of the automated procedure, the southwest leaning tower of the Caerphilly castle (Wales, UK) is investigated and failure mechanisms with collapse inclination angles are evaluated through FELA. The proposed procedure presents a high degree of automation at each operational level and, hence, could be effectively used to assess the stability of historic structures at a national scale and provide useful information to asset owners to classify the structural health condition of leaning historic masonry structures in their care.

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Section: Fe Mesh Generationmentioning

confidence: 99%

Stability analysis of leaning historic masonry structures

D’Altri

Miranda

Castellazzi

et al. 2018

Automation in Construction

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“…TIN is a procedure to originate a linearly estimated model of unknown values [40]. It is a series of adjacent triangles, which are assigned from randomly spaced nodes with 3D coordinates in accordance with a set of rules, mostly relied on Delaunay's triangulation [41,42]. The main property of this Delaunay method is that a circumcircle of a triangle does not include any other vertex [43] as shown in Figure 5.…”

Section: Tin Methodsmentioning

confidence: 99%

Impact of interpolation techniques on the accuracy of large-scale digital elevation model

et al. 2020

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AbstractThere is no doubt that the tremendous development of information technology was one of the driving factors behind the great growth of surveying and geodesy science. This has spawned modern geospatial techniques for data capturing, acquisition, and visualization tools. Digital elevation model (DEM) is the 3D depiction of continuous elevation data over the Earth’s surface that is produced through many procedures such as remote sensing, photogrammetry, and land surveying. DEMs are essential for various surveying and civil engineering applications to generate topographic maps for construction projects at a scale that varies from 1:500 to 1:2,000. GIS offers a powerful tool to create a DEM with high resolution from accurate land survey measurements using interpolation methods. The aim of this research is to investigate the impact of estimation techniques on generating a reliable and accurate DEM suitable for large-scale mapping. As a part of this study, the deterministic interpolation algorithms such as ANUDEM (Topo to Raster), inverse distance weighted (IDW), and triangulated irregular network (TIN) were tested using the ArcGIS desktop for elevation data obtained from real total station readings, with different landforms to show the effect of terrain roughness, data density, and interpolation process on DEM accuracy. Furthermore, comparison and validation of each interpolator were carried out through the cross-validation method and numerous graphical representations of the DEM. Finally, the results of the investigations showed that ANUDEM and TIN models are similar and significantly better than those attained from IDW.

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“…Da mesma forma, as palavras-chave foram analisadas, e a utilização dos modelos de superfície a partir da técnica de Triangular Irregular Networks (TINs) (Francisco, 2011;Huang, 1989) permitiu o mapeamento dos termos/assuntos de maior relevância utilizados na articulação dos conteúdos da RAE durante toda a sua trajetória.…”

Section: A Rae-revista De Administração De Empresasunclassified

“…Buscou-se construir uma representação geográfica tridimensional da rede pelo uso da técnica de análise espacial TIN, que consiste na construção de superfícies com base em uma rede de triângulos não sobrepostos (Floriani, 1987;Huang, 1989).…”

Section: Artigos Científicos -Palavras Mais Frequentes Nos Títulos Runclassified

Exploração Do Acervo Da Rae-Revista De Administração De Empresas (De 1961 a 2016) À Luz Da Bibliometria, Text Mining, Rede Social E Geoanálise

Favaretto

Francisco

2017

Rev. adm. empres.

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RESUMOEste artigo analisou mais de cinco décadas do acervo da Revista de Administração de Empresas (RAE), entre 1961 e 2016, pelo acesso aos documentos disponibilizados via internet no repositório eletrônico de periódicos e revistas da Biblioteca Digital da Fundação Getulio Vargas -Escola de Administração de Empresas de São Paulo, o qual segue o protocolo aberto Open Archives Initiative -Protocol for Metadata Harvesting (OAI-PMH) de interoperabilidade entre repositórios digitais. Um total de 2.381 documentos publicados no periódico (1.422 artigos, 217 editoriais, 62 pensatas e 680 resenhas) foi coletado de modo automatizado e posteriormente analisado com a utilização de técnicas de bibliometria, text mining, rede social e geoanálise. Este estudo permite compreender a trajetória da existência do periódico RAE em seus 22 diferentes períodos de gestão, o incremento da autoria nas publicações do periódico em 14 intervalos de tempo, os termos e palavras -chave com mais frequência e importância nos documentos publicados, bem como a formação das redes de coautoria dos pesquisadores que contribuíram para o desenvolvimento da ciência da Administração no País. (1,422 articles, 217 editorials, 62 opinion articles, and 680 reviews) PALAVRAS-CHAVE | ABSTRACT This article examined more than five decades of the Revista de Administração de Empresas (Journal of Business Administration [RAE]), between 1961 and 2016, through accessing documents made available on the internet in the electronic repository of periodicals and magazines of the Biblioteca Digital da Fundação Getulio Vargas-Escola de Administração de Empresas de São Paulo (Digital Library of the Getulio Vargas Foundation-School of Business Administration of São Paulo), which follows the Open Archives Initiative-Protocol for Metadata Harvesting (OAI-PMH) of interoperability between digital repositories. A total of 2,381 documents published in the journal were collected through an automated process and later analyzed using techniques such as bibliometrics, text mining, social networking, and geo-analysis. This study enables understanding of the path that the RAE journal has followed throughout its existence including 22 different management periods, the increase of authorship within its publications during 14 time intervals, the most frequent and important terms and keywords appearing in its published documents, and the formation of co-authoring networks of researchers who contribute to the development of the Administration science in the Country. KEYWORDS | Scientific journal RAE, bibliometric analysis, text mining, social network analysis, geo-analysis RESUMEN Este artículo analizó más de cinco décadas del acervo de la Revista de Administração de Empresas (RAE) -entre 1961 y 2016-mediante el acceso a documentos disponibles en internet, en el repositorio electrónico de periódi-cos y revistas de la Biblioteca Digital de la Fundação Getulio Vargas -Escuela de

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Triangular irregular network generation and topographical modeling

Cited by 14 publications

References 9 publications

Stability analysis of leaning historic masonry structures

Stability analysis of leaning historic masonry structures

Impact of interpolation techniques on the accuracy of large-scale digital elevation model

Exploração Do Acervo Da Rae-Revista De Administração De Empresas (De 1961 a 2016) À Luz Da Bibliometria, Text Mining, Rede Social E Geoanálise

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