When assessing the health of steel structures, capturing, and modelling the geometry is especially important. Point cloud-based technologies have special requirements; previous studies revealed certain challenges that are to be resolved. In this paper, we aimed to develop a method to investigate the effects that the surface reflectance, incidence angle, and distance have on the quality of the point cloud of steel sections. A controlled environment was established for the research, where three terrestrial laser scanners were used to measure four different steel specimens. For validation, we also made reference measurements with a structured light scanner. Due to a large amount of data, a workflow with own routines has been developed for processing the prepared measurement datasets. For standard steel sections, the comparative study clearly showed a significant influence of the section shape, resulting in occlusion and unfavorable incidence angles. Of the devices tested, the one de-signed for high-precision measurements showed the intensity highlighting phenomenon for highly reflective surfaces, however, the measurements demonstrate that with careful selection of measurement conditions and a few pre-processing steps, the technology is well suited for the assessment of steel structures.
{"title":"Testing the measurability of steel sections with terrestrial laser scanners","authors":"Á. Somogyi, Ákos Szabó-Leone, T. Lovas","doi":"10.55779/ng2466","DOIUrl":"https://doi.org/10.55779/ng2466","url":null,"abstract":"When assessing the health of steel structures, capturing, and modelling the geometry is especially important. Point cloud-based technologies have special requirements; previous studies revealed certain challenges that are to be resolved. In this paper, we aimed to develop a method to investigate the effects that the surface reflectance, incidence angle, and distance have on the quality of the point cloud of steel sections. A controlled environment was established for the research, where three terrestrial laser scanners were used to measure four different steel specimens. For validation, we also made reference measurements with a structured light scanner. Due to a large amount of data, a workflow with own routines has been developed for processing the prepared measurement datasets. For standard steel sections, the comparative study clearly showed a significant influence of the section shape, resulting in occlusion and unfavorable incidence angles. Of the devices tested, the one de-signed for high-precision measurements showed the intensity highlighting phenomenon for highly reflective surfaces, however, the measurements demonstrate that with careful selection of measurement conditions and a few pre-processing steps, the technology is well suited for the assessment of steel structures.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"780 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123898386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. Șuba, M. Nap, Silvia Chiorean, I. Pop, F. Matei, T. Sălăgean
3D building models are widely used in many applications. The use of terrestrial laser scanning and UAS photogrammetry for 3D modelling is a popular practice especially for constructions with complex architecture. The present article presents an example of using these technologies successfully for 3D modelling of the Episcopal Cathedral of the Holy Trinity from Baia Mare, Romania. A number of 51 control and verification points were determined by the closed circuit travel method and the intersection method. All measurements were processed in Terramodel software. The control points used in the georeferencing of the scans were materialized by metal stakes and the verification points were materialized by reflective targets. Depending on the construction configuration, the field of view and the minimum/maximum scanning distances were subsequently set. A total of 45 scans were performed to model the entire cathedral. The photogrammetric flight was performed in RTK mode, with corrections being transmitted from the DJI D-RTK-2 Mobile Station base to the RTK drone. All retrieved frames had geolocation and frame orientation elements recorded by the IMU module. A total number of 222 photograms were taken, as a result of a double grid photogrammetric flight, with the camera oriented at 60 degrees, but also as a result of manual acquisition by performing orbital flights at different heights: an orbital flight on the ground floor, an orbital flight at the level of about 40 meters and an orbital flight around the tower.
{"title":"Use of UAS and TLS technology in 3D modeling of constructions with complex architecture","authors":"E. Șuba, M. Nap, Silvia Chiorean, I. Pop, F. Matei, T. Sălăgean","doi":"10.55779/ng2474","DOIUrl":"https://doi.org/10.55779/ng2474","url":null,"abstract":"3D building models are widely used in many applications. The use of terrestrial laser scanning and UAS photogrammetry for 3D modelling is a popular practice especially for constructions with complex architecture. The present article presents an example of using these technologies successfully for 3D modelling of the Episcopal Cathedral of the Holy Trinity from Baia Mare, Romania. A number of 51 control and verification points were determined by the closed circuit travel method and the intersection method. All measurements were processed in Terramodel software. The control points used in the georeferencing of the scans were materialized by metal stakes and the verification points were materialized by reflective targets. Depending on the construction configuration, the field of view and the minimum/maximum scanning distances were subsequently set. A total of 45 scans were performed to model the entire cathedral. The photogrammetric flight was performed in RTK mode, with corrections being transmitted from the DJI D-RTK-2 Mobile Station base to the RTK drone. All retrieved frames had geolocation and frame orientation elements recorded by the IMU module. A total number of 222 photograms were taken, as a result of a double grid photogrammetric flight, with the camera oriented at 60 degrees, but also as a result of manual acquisition by performing orbital flights at different heights: an orbital flight on the ground floor, an orbital flight at the level of about 40 meters and an orbital flight around the tower.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127431650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andrei FÎRȚALĂ-CIONCUȚ, Ștefan Bilașco, I. Fodorean, S. Roșca, I. Vescan
Having a strong impact on human activities, landslides represent one of the most frequent hazards encountered throughout the world, but also in Romania. As a result, various exhaustive scientific approaches try to identify the areas affected by this phenomenon or at risk, among the proposed methods being those offered by G.I.S. techniques of spatial analysis in tandem with statistical methods. In the present study, G.I.S. methods of spatial analysis were used, with a focus on methodologies capable of determining the probability of occurrence of landslides, possible and viable within any territory. The analysis was carried out in the area of the commune of Bicazu Ardelean, Neamț County, Romania, where multiple areas with a medium-high and high probability of vulnerability were identified, by means of a deterministic “white-box” type model, followed by an evaluation from the point of view of the risk induced on the territorial infrastructures. Both the model and the evaluation generated suitable results, validated in G.I.S. and in the field. The obtained results attested the viability of the working method, as well as the potential of its application in any other areas with similar morphometric characteristics.
{"title":"Identification and evaluation of the risk induced by landslides based on G.I.S. models of spatial analysis. Case study: Bicazu Ardelean, Romania","authors":"Andrei FÎRȚALĂ-CIONCUȚ, Ștefan Bilașco, I. Fodorean, S. Roșca, I. Vescan","doi":"10.55779/ng2352","DOIUrl":"https://doi.org/10.55779/ng2352","url":null,"abstract":"Having a strong impact on human activities, landslides represent one of the most frequent hazards encountered throughout the world, but also in Romania. As a result, various exhaustive scientific approaches try to identify the areas affected by this phenomenon or at risk, among the proposed methods being those offered by G.I.S. techniques of spatial analysis in tandem with statistical methods. In the present study, G.I.S. methods of spatial analysis were used, with a focus on methodologies capable of determining the probability of occurrence of landslides, possible and viable within any territory. The analysis was carried out in the area of the commune of Bicazu Ardelean, Neamț County, Romania, where multiple areas with a medium-high and high probability of vulnerability were identified, by means of a deterministic “white-box” type model, followed by an evaluation from the point of view of the risk induced on the territorial infrastructures. Both the model and the evaluation generated suitable results, validated in G.I.S. and in the field. The obtained results attested the viability of the working method, as well as the potential of its application in any other areas with similar morphometric characteristics.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122011255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The paper deals with a review of tectonic evolution in different regions of China with the help of different techniques and models. Tectonic evolution shows that in the shallow layers of China the structural impact is not solid, and huge structural zones are deficient within the list and incline zones where the principal wretchedness and delicate slant zones framed. The Qinling Orogenic Belt (QOB) situated between the North China Craton (NCC) and the Yangtze Craton (YZC) is made from the Northern Qinling Belt (NQB) and the Southern Qinling Belt (SQB). The Hf isotopic creations of zircons from the different rocks recommend that the NQB most likely created on the cellar of the southern NCC. The stones in the SQB show zircon age spectra and Hf-isotope structures like those in the northern YZC, recommending a nearby proclivity. We thusly decipher the SQB to have created on the cellar of the northern YZC. Incorporating the new information in this investigation with those from past works, we propose another structural model for the development and advancement of the QOB during late Mesoproterozoic to early Paleozoic including the accompanying significant occasions: (1) Late Mesoproterozoic to early Neoproterozoic (Grenvillian) toward the north subduction of the Songshugou Ocean; Early-center Neoproterozoic (870-800 Ma) bidirectional subduction and impact; Middle Neoproterozoic (∼800-710 Ma) post-crash expansion; Middle-late Neoproterozoic (710-600 Ma) inside plate augmentation; Late Neoproterozoic-early Paleozoic (600-520 Ma) opening of the Shangdan Ocean; and Early Paleozoic (520-420 Ma) subduction-crash. We accordingly follow in any event two unmistakable Wilson cycles in the QOB.
{"title":"Tectonic evolution of the Qinling Orogenic Belt, Central China – new evidence from geochemical, zircon (U-pb) geochronology and HF isotopes","authors":"Nusrat Nazir, Liu Yang, Zhang Chengjun","doi":"10.55779/ng2354","DOIUrl":"https://doi.org/10.55779/ng2354","url":null,"abstract":"The paper deals with a review of tectonic evolution in different regions of China with the help of different techniques and models. Tectonic evolution shows that in the shallow layers of China the structural impact is not solid, and huge structural zones are deficient within the list and incline zones where the principal wretchedness and delicate slant zones framed. The Qinling Orogenic Belt (QOB) situated between the North China Craton (NCC) and the Yangtze Craton (YZC) is made from the Northern Qinling Belt (NQB) and the Southern Qinling Belt (SQB). The Hf isotopic creations of zircons from the different rocks recommend that the NQB most likely created on the cellar of the southern NCC. The stones in the SQB show zircon age spectra and Hf-isotope structures like those in the northern YZC, recommending a nearby proclivity. We thusly decipher the SQB to have created on the cellar of the northern YZC. Incorporating the new information in this investigation with those from past works, we propose another structural model for the development and advancement of the QOB during late Mesoproterozoic to early Paleozoic including the accompanying significant occasions: (1) Late Mesoproterozoic to early Neoproterozoic (Grenvillian) toward the north subduction of the Songshugou Ocean; Early-center Neoproterozoic (870-800 Ma) bidirectional subduction and impact; Middle Neoproterozoic (∼800-710 Ma) post-crash expansion; Middle-late Neoproterozoic (710-600 Ma) inside plate augmentation; Late Neoproterozoic-early Paleozoic (600-520 Ma) opening of the Shangdan Ocean; and Early Paleozoic (520-420 Ma) subduction-crash. We accordingly follow in any event two unmistakable Wilson cycles in the QOB.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127318073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Global warming has emerged as one of humanity’s most pressing environmental issues and Land Surface Temperature (LST) is increasingly being used to assess increased warming in urban areas. The exploitation and usage of natural resources create significant environmental harm in mining, especially over land surface. The link between LST and NDVI (Normalized Difference Vegetation Index) is highly intriguing, and draws remote sensing specialists from all over the world. Present study makes an effort to retrieve the LST and its correlation with NDVI in parts of Wardha Valley Coalfield, which in central India. Four sets of Landsat-5 (TM) data of summer and winter have been used for 1991 and 2006, whereas two sets of Landsat-8 (OLI) data have been chosen for 2021. Mono-window algorithm was applied to retrieve LST from multi-temporal Landsat satellite sensors. Five LU/LC categories have been delineated viz. Vegetation/Forest, Mine/Industry, Overburden dumps/built-up, Waste land and Water body by using maximum likelihood classification algorithm. The study reveals that the mean LST of five LU/LC categories of both summer and winter seasons has increased during 1991-2006 period which suggests an example of Urban Heat Island (UHI). However, mean LST for five LU/LC categories has slightly decreased during 2006-2021 period which represents an example of Urban Cool Island (UCI). Moreover, over all mean LST of summer and winter seasons has increased by 7.39 °C and 4.51 °C respectively during 1991-2021 period. The study also examines NDVI-LST inverse relationship, which shows strong negative correlation in summer as well as in winter. Therefore, it can be concluded that surface temperature is highly controlled by surface land use type such as vegetation, built-up land, mining area etc. The presented results in this study will significantly help in future planning of the district and also provide a database for upcoming climate control goals.
{"title":"Correlation between land surface temperature (LST) and normalized difference vegetation index (NDVI) in Wardha Valley Coalfield, Maharashtra, Central India","authors":"Z. Khan, Akram Javed","doi":"10.55779/ng2353","DOIUrl":"https://doi.org/10.55779/ng2353","url":null,"abstract":"Global warming has emerged as one of humanity’s most pressing environmental issues and Land Surface Temperature (LST) is increasingly being used to assess increased warming in urban areas. The exploitation and usage of natural resources create significant environmental harm in mining, especially over land surface. The link between LST and NDVI (Normalized Difference Vegetation Index) is highly intriguing, and draws remote sensing specialists from all over the world. Present study makes an effort to retrieve the LST and its correlation with NDVI in parts of Wardha Valley Coalfield, which in central India. Four sets of Landsat-5 (TM) data of summer and winter have been used for 1991 and 2006, whereas two sets of Landsat-8 (OLI) data have been chosen for 2021. Mono-window algorithm was applied to retrieve LST from multi-temporal Landsat satellite sensors. Five LU/LC categories have been delineated viz. Vegetation/Forest, Mine/Industry, Overburden dumps/built-up, Waste land and Water body by using maximum likelihood classification algorithm. The study reveals that the mean LST of five LU/LC categories of both summer and winter seasons has increased during 1991-2006 period which suggests an example of Urban Heat Island (UHI). However, mean LST for five LU/LC categories has slightly decreased during 2006-2021 period which represents an example of Urban Cool Island (UCI). Moreover, over all mean LST of summer and winter seasons has increased by 7.39 °C and 4.51 °C respectively during 1991-2021 period. The study also examines NDVI-LST inverse relationship, which shows strong negative correlation in summer as well as in winter. Therefore, it can be concluded that surface temperature is highly controlled by surface land use type such as vegetation, built-up land, mining area etc. The presented results in this study will significantly help in future planning of the district and also provide a database for upcoming climate control goals.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130159031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nova Geodesia (https://novageodesia.ro), Issue 2, Volume 2, 2022: The papers published in this issue represent interesting novelties in different topics of geodetic science. Among the exciting articles, we invite readers to find news about: The systematic registration of property law and cadastre on the territory in Romania: discussing a case study; Evaluating the pedestrian accessibility to public services using open-source geospatial data and QGIS software; Analysis of compositional lines in natural landscapes.
Nova Geodesia (https://novageodesia.ro)，第2期，第2卷，2022年:发表在这一期上的论文代表了大地测量科学不同主题的有趣的新奇。在这些令人兴奋的文章中，我们邀请读者寻找以下新闻:罗马尼亚境内的物权法和地籍的系统登记:讨论一个案例研究;基于开源地理空间数据和QGIS软件的行人公共服务可达性评价自然景观中的构图线分析。
{"title":"Introduction pages, Nova Geodesia 2(2), 2022","authors":"P. Sestras","doi":"10.55779/ng2251","DOIUrl":"https://doi.org/10.55779/ng2251","url":null,"abstract":"Nova Geodesia (https://novageodesia.ro), Issue 2, Volume 2, 2022: The papers published in this issue represent interesting novelties in different topics of geodetic science. Among the exciting articles, we invite readers to find news about: The systematic registration of property law and cadastre on the territory in Romania: discussing a case study; Evaluating the pedestrian accessibility to public services using open-source geospatial data and QGIS software; Analysis of compositional lines in natural landscapes.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117316908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The systematic registration of real estate on the territory of a state represents the way to the rapid development of the market economy by reducing transaction costs, securing property rights, reducing or avoiding corruption and attracting investors. This work presents the way to create a systematic cadastre sector in the form of a case study, in accordance with the systematic cadastre procedures at the level of Romania, and its impact on sustainable development. In Romania, systematic registration is realised in the Eterra electronic database starting with the year 2015, together with the establishment of the National Agency for Cadastre and Land Registration (ANCPI) program 2015-2023. Registration is carried out exclusively at the level of the administrative-territorial unit (U.A.T.), respectively commune, city, municipality or at the level of one or more cadastral sectors, depending on the contract concluded between the executor and the local municipality. The procedures and stages of carrying out systematic cadastre works are regulated by Law number 7/1996 on cadastre and real estate advertising and the Regulation of July 9, 2014, on approval, reception and registration in the cadastre records and land register, as approved by the Order ANCPI number 700/2014. The financing of the program is made from three different sources: own revenues of the ANCPI in the amount of approximately 900 million euros, non-refundable external funds (European Union) in the amount of approximately 312 million euros, allocations from the budget of the units administrative-territorial through co-financing and is done free of charge for property owners.
{"title":"The systematic registration of property law and cadastre on the territory in Romania: discussing a case study","authors":"Robert Bancioiu, Leontina Kovacs","doi":"10.55779/ng2228","DOIUrl":"https://doi.org/10.55779/ng2228","url":null,"abstract":"The systematic registration of real estate on the territory of a state represents the way to the rapid development of the market economy by reducing transaction costs, securing property rights, reducing or avoiding corruption and attracting investors. This work presents the way to create a systematic cadastre sector in the form of a case study, in accordance with the systematic cadastre procedures at the level of Romania, and its impact on sustainable development. In Romania, systematic registration is realised in the Eterra electronic database starting with the year 2015, together with the establishment of the National Agency for Cadastre and Land Registration (ANCPI) program 2015-2023. Registration is carried out exclusively at the level of the administrative-territorial unit (U.A.T.), respectively commune, city, municipality or at the level of one or more cadastral sectors, depending on the contract concluded between the executor and the local municipality. The procedures and stages of carrying out systematic cadastre works are regulated by Law number 7/1996 on cadastre and real estate advertising and the Regulation of July 9, 2014, on approval, reception and registration in the cadastre records and land register, as approved by the Order ANCPI number 700/2014. The financing of the program is made from three different sources: own revenues of the ANCPI in the amount of approximately 900 million euros, non-refundable external funds (European Union) in the amount of approximately 312 million euros, allocations from the budget of the units administrative-territorial through co-financing and is done free of charge for property owners.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125493947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mihaela Szabo, A. Dumitraș, Diana-Maria Mircea, A. Sestras, R. Brzuszek
Nature was and remains an eternal companion of man, but at the same time, it is also a constant enigma. Man’s connection with nature is ancestral, and the need for this connection is constantly proven. Landscape design is the field where art (human creation) and nature meet, creating a field of endless possibilities in the development of outdoor spaces, but while the artistic side of the field is constantly improved and developed, sometimes the exploration of the natural side is left behind. The present study aims to identify and analyse the types of compositional lines that can be found in natural landscapes. For this, different photos from natural parks or Romanian reserves were selected and subjected to visual analysis. In the examined scenes, vertical, horizontal, diagonal, straight or sinuous lines (the most dominant) were identified, being suggested by tree trunks or logs, water beds or streams, paths, the topography of the land or the contour of the crown. Their properties, such as thickness or repetition, can provide diversity, animate a scene, and generate visual movement or invite further exploration. This work can serve as a basis for a more thorough study of natural landscapes and is relevant to landscape architects who support the use of natural style in their work or are interested in integrative landscape design for a better understanding of natural features, as well as researchers who want to explore the aesthetics of natural landscapes.
{"title":"Analysis of compositional lines in natural landscapes","authors":"Mihaela Szabo, A. Dumitraș, Diana-Maria Mircea, A. Sestras, R. Brzuszek","doi":"10.55779/ng2229","DOIUrl":"https://doi.org/10.55779/ng2229","url":null,"abstract":"Nature was and remains an eternal companion of man, but at the same time, it is also a constant enigma. Man’s connection with nature is ancestral, and the need for this connection is constantly proven. Landscape design is the field where art (human creation) and nature meet, creating a field of endless possibilities in the development of outdoor spaces, but while the artistic side of the field is constantly improved and developed, sometimes the exploration of the natural side is left behind. The present study aims to identify and analyse the types of compositional lines that can be found in natural landscapes. For this, different photos from natural parks or Romanian reserves were selected and subjected to visual analysis. In the examined scenes, vertical, horizontal, diagonal, straight or sinuous lines (the most dominant) were identified, being suggested by tree trunks or logs, water beds or streams, paths, the topography of the land or the contour of the crown. Their properties, such as thickness or repetition, can provide diversity, animate a scene, and generate visual movement or invite further exploration. This work can serve as a basis for a more thorough study of natural landscapes and is relevant to landscape architects who support the use of natural style in their work or are interested in integrative landscape design for a better understanding of natural features, as well as researchers who want to explore the aesthetics of natural landscapes.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121163575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alba Kucukali, Rejdi Pjeternikaj, Egin Zeka, Artan Hysa
This study brings a rapid method to utilize the available open-source geospatial data in assessing the pedestrian accessibility to key public services/facilities. At this stage, we are testing the method in the case of Tirana, the capital city of Albania. Yet, the method is reproducible to other metropolitan areas around the world. Open street map (OSM) data and reference layers from Albanian National authority for geospatial information (ASIG geoportal) have been used as the raw material of the study. While the geospatial visualization, refinement, and analysis rely on the usage of QGIS software and the related plugins. QNEAT is the plugin that was used to generate the isochrones which indicate the spatial coverage of a certain service referring to the existing urban transportation/circulation network. The plugin enables the definition of different distance ranges. Our results show that certain public services serve to various amounts of the building stock at a gradient of walking distances. For example, more than 25% of the existing building stock has pedestrian access to caffes and pharmacies within a walking distance of 250 m. The same services serve to almost 90% of the same building stock within 1 km walking distance. However, services like banks are accessible only by 12.6% of the existing buildings within a walking distance of 250 m, and 67% at 1 km walking distance. The accuracy of the available geospatial data resulted to be vital for the reliability of the results. We conclude by highlighting the importance and utility of GIS-based methods of urban analysis in the processes of planning new public services in the city.
{"title":"Evaluating the pedestrian accessibility to public services using open-source geospatial data and QGIS software","authors":"Alba Kucukali, Rejdi Pjeternikaj, Egin Zeka, Artan Hysa","doi":"10.55779/ng2242","DOIUrl":"https://doi.org/10.55779/ng2242","url":null,"abstract":"This study brings a rapid method to utilize the available open-source geospatial data in assessing the pedestrian accessibility to key public services/facilities. At this stage, we are testing the method in the case of Tirana, the capital city of Albania. Yet, the method is reproducible to other metropolitan areas around the world. Open street map (OSM) data and reference layers from Albanian National authority for geospatial information (ASIG geoportal) have been used as the raw material of the study. While the geospatial visualization, refinement, and analysis rely on the usage of QGIS software and the related plugins. QNEAT is the plugin that was used to generate the isochrones which indicate the spatial coverage of a certain service referring to the existing urban transportation/circulation network. The plugin enables the definition of different distance ranges. Our results show that certain public services serve to various amounts of the building stock at a gradient of walking distances. For example, more than 25% of the existing building stock has pedestrian access to caffes and pharmacies within a walking distance of 250 m. The same services serve to almost 90% of the same building stock within 1 km walking distance. However, services like banks are accessible only by 12.6% of the existing buildings within a walking distance of 250 m, and 67% at 1 km walking distance. The accuracy of the available geospatial data resulted to be vital for the reliability of the results. We conclude by highlighting the importance and utility of GIS-based methods of urban analysis in the processes of planning new public services in the city.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"352 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122845175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Moscovici, Ovidiu Marcel Sîrbu, C. Vilceanu, S. Herban, A. Iovanovici
The continuous development and the rapid economic growth of Timisoara municipality (western Romania) have contributed to the increase in transport needs. The number of motor vehicles registered by natural persons (125195), and the number of motor vehicles registered by legal entities (35303), results in one motor vehicle per two persons. To these figures are added the commuters, students and tourists who come by car to the city. Thus, the main cause of road traffic is the increasing number of vehicles, day by day. In order to maximize road capacity and speed up the pedestrians’ flow, traffic lights are used at approximately every intersection. As such, the proper use of traffic signals can lead to more efficient traffic management. Due to the evolution in time, technology comes to aid precisely to solve such problems and especially to streamline road traffic issues. Thus, the article presents the workflow that includes identifying the elements of a traffic light intersection, measuring, and processing them, in order to realize a layout plan that can be introduced into a GIS system to manage traffic lights in an intelligent manner. Using GIS (Geographical Information System) technology, the problem of road traffic can be solved appropriately and efficiently. Based on the main characteristics of urban traffic and the efficient, appropriate use of traffic lights, approaching, and treating the information according to the area, its spatial and geographical location through coordinates, GIS technology can be used to solve problems given by the zonal agglomeration of heavy traffic centres, or areas with peak hours. The fluidization of the traffic can ensure better circulation and aeration of the crowded areas and the avoidance of the congestion of some central arteries, especially during rush hours.
{"title":"Spatial data acquisition for traffic lights intersections as a basis for GIS development in Timisoara, Romania","authors":"A. Moscovici, Ovidiu Marcel Sîrbu, C. Vilceanu, S. Herban, A. Iovanovici","doi":"10.55779/ng2125","DOIUrl":"https://doi.org/10.55779/ng2125","url":null,"abstract":"The continuous development and the rapid economic growth of Timisoara municipality (western Romania) have contributed to the increase in transport needs. The number of motor vehicles registered by natural persons (125195), and the number of motor vehicles registered by legal entities (35303), results in one motor vehicle per two persons. To these figures are added the commuters, students and tourists who come by car to the city. Thus, the main cause of road traffic is the increasing number of vehicles, day by day. In order to maximize road capacity and speed up the pedestrians’ flow, traffic lights are used at approximately every intersection. As such, the proper use of traffic signals can lead to more efficient traffic management. Due to the evolution in time, technology comes to aid precisely to solve such problems and especially to streamline road traffic issues. Thus, the article presents the workflow that includes identifying the elements of a traffic light intersection, measuring, and processing them, in order to realize a layout plan that can be introduced into a GIS system to manage traffic lights in an intelligent manner. Using GIS (Geographical Information System) technology, the problem of road traffic can be solved appropriately and efficiently. Based on the main characteristics of urban traffic and the efficient, appropriate use of traffic lights, approaching, and treating the information according to the area, its spatial and geographical location through coordinates, GIS technology can be used to solve problems given by the zonal agglomeration of heavy traffic centres, or areas with peak hours. The fluidization of the traffic can ensure better circulation and aeration of the crowded areas and the avoidance of the congestion of some central arteries, especially during rush hours.","PeriodicalId":109211,"journal":{"name":"Nova Geodesia","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121668652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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