Educational course "Creation of virtual geological outcrops of the outskirts of Lviv"

2021 ◽  
Author(s):  
Ihor Bubniak ◽  
Serhiy Tsikhon ◽  
Anatoliy Tserklevych ◽  
Yevheniy Shylo ◽  
Mariia Oliinyk
Keyword(s):  
Laser Scanning ◽  
Terrestrial Laser Scanning ◽  
Field Work ◽  
Geological Structure ◽  
The Third ◽  
Self Study ◽  
Different Types ◽  
Teaching Award ◽  
The City ◽  
Educational Course

<p>We present a new educational course "Creation of virtual geological outcrops of the outskirts of Lviv" for students of geological specialties. Discipline "Creation of virtual geological outcrops of the outskirts of Lviv" is a selective discipline for students of 2-3 courses of various specialties, which is lectured in the amount of 3 credits (according to ECTS). The course is 32 hours of classroom classes, 16 hours of these of lectures, the rest 16 hours of practical classes and 58 hours of self-study.</p><p>The course is in three parts. First is preparatory ones. Students get acquainted with the geological structure of Lviv, prepare equipment for field work.</p><p>The field stage (the second part of the course) includes the survey of 3-4 geological objects around Lviv. These can be natural outcrops, quarries. A particularly valuable object for learning is the Honey Cave, located within the city limits. Depending on the object, we choose the type of survey— digital photogrammetry or terrestrial laser scanning. Each group of 4 students explores 2 objects.</p><p>The third cameral period includes field data processing. Students create 3D geological models and perform various measurements on them. Students compare different types of models to choose the best one. At this stage, students use a variety of software available in institutions. The final stage of the course is the preparation of a report and passing the exam.</p><p>The project war partly financed by EGU HE Teaching Award.</p>

Hanseníase: formas sociais da doença no Brasil e na Índia

2021 ◽  
Author(s):  
Elizabeth Parente Costa
Keyword(s):  
Social Representations ◽  
Field Work ◽  
World Health ◽  
New Delhi ◽  
Medical Texts ◽  
The Third ◽  
The Social ◽  
Leprosy Patients ◽  
Health Organization ◽  
The City

The research proposes a study of the social representations of leprosy, we seek three times to understand the sense of every society and their dynamics in relation to disease. The first in the city of Sobral/CE, where we carry out research in the years 2008 and 2009; the second moment in the city of Mogi das Cruzes/SP, with a man who has gone through several periods of hospitalization and overcame the stigma through work aimed at manufacture of prosthetic patients amputees; and the third time in New Delhi in India, where we find the largest number of leprosy patients. The places chosen for the field work were selected after repeated bibliographical research, readings of scholarly articles, medical texts and physicians about the disease and mainly with the data of the World Health Organization (WHO) and of the Brazilian Institute of Geography and Statistics (IBGE). We investigate the sociocultural reality of people afflicted by illness and how these could be with the disease.

scholarly journals MULTISPECTRAL ANALYSIS OF INDIGENOUS ROCK ART USING TERRESTRIAL LASER SCANNING

2016 ◽  
Vol XLI-B5 ◽  
pp. 405-412 ◽  
Author(s):  
B. Skoog ◽  
P. Helmholz ◽  
D. Belton
Keyword(s):  
Classification Accuracy ◽  
Laser Scanning ◽  
Rock Art ◽  
Terrestrial Laser Scanning ◽  
Target Surface ◽  
Classification Algorithms ◽  
Heritage Preservation ◽  
Art Gallery ◽  
Different Types ◽  
Multispectral Analysis

Multispectral analysis is a widely used technique in the photogrammetric and remote sensing industry. The use of Terrestrial Laser Scanning (TLS) in combination with imagery is becoming increasingly common, with its applications spreading to a wider range of fields. Both systems benefit from being a non-contact technique that can be used to accurately capture data regarding the target surface. Although multispectral analysis is actively performed within the spatial sciences field, its extent of application within an archaeological context has been limited. This study effectively aims to apply the multispectral techniques commonly used, to a remote Indigenous site that contains an extensive gallery of aging rock art. The ultimate goal for this research is the development of a systematic procedure that could be applied to numerous similar sites for the purpose of heritage preservation and research. The study consisted of extensive data capture of the rock art gallery using two different TLS systems and a digital SLR camera. The data was combined into a common 2D reference frame that allowed for standard image processing to be applied. An unsupervised k-means classifier was applied to the multiband images to detect the different types of rock art present. The result was unsatisfactory as the subsequent classification accuracy was relatively low. The procedure and technique does however show potential and further testing with different classification algorithms could possibly improve the result significantly.

scholarly journals Study of the Application of Terrestrial Laser Scanning for Identification of Pathologies in Concrete Structures

2021 ◽  
Author(s):  
Sergio Orlando Antoun Netto ◽  
Lucas Pires Chagas Ferreira de Carvalho ◽  
Ana Waldila de Queiroz Ramiro Reis ◽  
Leonardo Vieira Barbalho ◽  
Lucas de Campos Rodrigues
Keyword(s):  
Point Cloud ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Concrete Structures ◽  
Terrestrial Laser Scanning ◽  
Color Data ◽  
Definition Of ◽  
The City

Abstract Laser scanning enhances classic field surveys. The terrestrial laser scanner is a versatile device with applications in various areas of knowledge, which uses remote sensing fundamentals to determine point coordinates. It is a remote, active, noninvasive, nondestructive and high-precision technique to capture reality that records from thousands to millions of points per second in a detailed representation of the situation called a point cloud. The surveys are performed along the object of interest in a process called scanning, which has as its gross product a dense cloud of three-dimensional points of the scanned object. This point cloud stores information about the object’s geometry, return pulse intensity, and point color data. As a way of extending the uses of terrestrial laser scanning, this work studies the application of this method in civil engineering, through the identification of pathologies in reinforced concrete structures, aiming to show how geoinformation can be employed in this area. To this end, a case study of the São Cristóvão Viaduct was conducted in the city of Rio de Janeiro. This study included definition of the site of analysis; planning and execution of the field survey to collect raw data; processing of the point cloud; and generation of a three-dimensional surface for global visualization of the structure and identification of pathological manifestations and the regions where they were observed. Concrete structures in general are affected by various external factors, such as weather and anthropogenic actions, which contribute to their wear.

scholarly journals Correcting for nondetection in estimating forest characteristics from single-scan terrestrial laser measurements

2019 ◽  
Vol 49 (1) ◽  
pp. 96-103 ◽  
Author(s):  
Mikko Kuronen ◽  
Helena M. Henttonen ◽  
Mari Myllymäki
Keyword(s):  
Simulation Study ◽  
Laser Scanning ◽  
Terrestrial Laser Scanning ◽  
Basal Area ◽  
Tree Density ◽  
Laser Measurements ◽  
Different Types ◽  
Visible Area

A problem in the single-scan setup of terrestrial laser scanning is that some trees are shaded by others and therefore not detected in the scan. A basic estimator for forest characteristics such as tree density or basal area is based on the visible area of a scanner. However, simply compensating for nondetection by the visible area may result in considerable bias even in Poisson forests, especially if the detection of a tree depends on its size. We propose a new estimator that is a generalization of the visible area based estimator. Most importantly, the new estimator allows different detection rules; for example, full or partial visibility of a tree can be required for detection. By a simulation study, it is shown to work adequately in different types of simulated and empirical forests with different detection rules.

Terrestrial laser scanning assisted flatness quality assessment for two different types of concrete surfaces

Measurement ◽  
2020 ◽  
Vol 154 ◽  
pp. 107436 ◽  
Author(s):  
Dongsheng Li ◽  
Jiepeng Liu ◽  
Liang Feng ◽  
Yang Zhou ◽  
Pengkun Liu ◽  
...  
Keyword(s):  
Quality Assessment ◽  
Laser Scanning ◽  
Terrestrial Laser Scanning ◽  
Different Types

scholarly journals MULTISPECTRAL ANALYSIS OF INDIGENOUS ROCK ART USING TERRESTRIAL LASER SCANNING

2016 ◽  
Vol XLI-B5 ◽  
pp. 405-412
Author(s):  
B. Skoog ◽  
P. Helmholz ◽  
D. Belton
Keyword(s):  
Classification Accuracy ◽  
Laser Scanning ◽  
Rock Art ◽  
Terrestrial Laser Scanning ◽  
Target Surface ◽  
Classification Algorithms ◽  
Heritage Preservation ◽  
Art Gallery ◽  
Different Types ◽  
Multispectral Analysis

Multispectral analysis is a widely used technique in the photogrammetric and remote sensing industry. The use of Terrestrial Laser Scanning (TLS) in combination with imagery is becoming increasingly common, with its applications spreading to a wider range of fields. Both systems benefit from being a non-contact technique that can be used to accurately capture data regarding the target surface. Although multispectral analysis is actively performed within the spatial sciences field, its extent of application within an archaeological context has been limited. This study effectively aims to apply the multispectral techniques commonly used, to a remote Indigenous site that contains an extensive gallery of aging rock art. The ultimate goal for this research is the development of a systematic procedure that could be applied to numerous similar sites for the purpose of heritage preservation and research. The study consisted of extensive data capture of the rock art gallery using two different TLS systems and a digital SLR camera. The data was combined into a common 2D reference frame that allowed for standard image processing to be applied. An unsupervised k-means classifier was applied to the multiband images to detect the different types of rock art present. The result was unsatisfactory as the subsequent classification accuracy was relatively low. The procedure and technique does however show potential and further testing with different classification algorithms could possibly improve the result significantly.

scholarly journals “Recognizable” textiles in daily practices of the 16th-century Florence

2020 ◽  
pp. 24-35
Author(s):  
Kateryna Hotsalo
Keyword(s):  
16Th Century ◽  
Manufacturing Processes ◽  
The Third ◽  
Complicated Process ◽  
Different Types ◽  
The Status ◽  
Materials Used ◽  
Fabric Materials ◽  
The City ◽  
Written Sources

The aim of the article is to shape the semiotic of textiles in the context of their use in various daily practices of the city of Florence during the 16th century. The article investigates the possibility of different representatives of the city to perceive fabrics as a symbol and the ability to identify different types of textiles “by eye”. It consists of three thematic sections. The first one dedicates to the study of those characteristics of textiles that were decisive in the formation of their semiotics. We have found that fabric materials and techniques were such characteristics. Since the creation of textiles was a complicated process, their function as a symbol of user’s status was extremely important. The second part devotes to those manufacturing processes within cities that facilitated exchange of technology and design of fabrics and, as a consequence, perception by users such a textile component as an ornament. The third part of the article deals with specific examples of the Florentine comprehension of certain fabrics. It draws attention to the way textiles are described in written sources. The various urban practices have made it possible for representatives of different segments of the population to be able to distinguish different types of textiles. Fabrics have become an additional way of identifying the status and origin of their user. The ornaments were also symbolic, depending on the materials used to make them. On the other hand, many city dwellers could not identify elements of most common fabric patterns and, therefore, could not perceive them as symbols.

scholarly journals 3D modelling of beach topography changes caused by the tombolo phenomenon using terrestrial laser scanning (TLS) and unmanned aerial vehicle (UAV) photogrammetry on the example of the city of Sopot

2020 ◽  
Vol 40 (5) ◽  
pp. 675-685 ◽  
Author(s):  
Cezary Specht ◽  
Pawel S. Dabrowski ◽  
Mariusz Specht
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Cross Sections ◽  
Laser Scanning ◽  
Morphological Changes ◽  
Terrestrial Laser Scanning ◽  
Point Clouds ◽  
3D Modelling ◽  
Sea Bottom ◽  
Aerial Vehicle ◽  
The City

Abstract In 2011, a yacht marina was built in Sopot (the largest holiday resort in Poland), which initiated the formation of a local shallowing of the bottom related to the tombolo effect. The building of the marina led to disturbances in the transmission of bottom deposits along the coast, which resulted from waves and the shift of the beach coastline by approx. 50 m towards the sea. Its effects include progressive morphological changes in the shore and the sea bottom, which will lead to the formation of a peninsula between the shore and the marina in the future. This paper presents the results of a comparative analysis of the accuracy of 3D modelling of the tombolo phenomenon in the onshore part of the beach using both point clouds obtained by terrestrial laser scanning methods and photogrammetric methods based on unmanned aerial vehicle photographs. The methods subjected to assessment include both those for land modelling and for determining the coastline course and its changes. The analysis results prove the existence of sub-metre differences in the imaged relief and the coastline course, which were demonstrated using an analysis of land cross-sections. The possibilities and limitations of both methods are demonstrated as well.

Isolation and Diagnosis of Fungi from Samples of Spices in the City of Nasiriya

2020 ◽  
pp. 7-9
Keyword(s):  
Chronic Diseases ◽  
Dilution Method ◽  
Local Markets ◽  
White Pepper ◽  
Black And White ◽  
Different Types ◽  
Potential Risks ◽  
The City ◽  
Isolated Species

Examination of (35) samples of spices obtained from local markets for the purposes of isolating and diagnosing fungi growing on them. Anine isolates belonging to 13 different types of fungi were diagnosed by the standard dilution method with three replications, and it has been observed that the most samples from which the fungi were isolated is ginger. It was found that the most isolated species of fungi are Penicillium, Aspergillus, and Rizupes spp. A rare colony of fungi was observed, which indicates contamination of the spices under study with the fungus. The present study aims to identify the potential risks of the presence of fungi in spices and what may result from mycotoxins that may be the cause of many chronic diseases as a result of using these spices in large quantities. The study recommends limiting the use of contaminated spices, especially ginger, in preparing food and its uses, in addition to other types such as cloves, black and white pepper, and other types of spices found in the local markets, especially the expired ones.

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