scholarly journals THE FLOOD THREAT MAPPING OF THE KOLUBARA RIVER BASIN USING THE LEICA ALS80HP LASER SCANNER

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Dragoljub Sekulović ◽  
Miloš Basarić ◽  
Ivan Garić
Keyword(s):  
River Basin ◽  
Laser Scanning ◽  
Laser Scanner ◽  
The Creation ◽  
The Republic ◽  
Great Damage

Every year, floods cause great damage in the Republic of Serbia. The lack of solutions for flood riskmanagement and prevention during their escalation causes great financial deficit. One of thesolutions for achieving stability in this sphere is creating a map of flood threats and risk accordingto the European Flood Directive. The task of the IPA2014 action is the creation of those maps usingthe latest technology in laser scanning of terrain, or LiDAR sensors. Scanning the terrain from airusing the aforementioned technology gathers data which by later processing results in very precisedigital models of terrain which are used as the foundation for mapmaking.

scholarly journals The Development of Sibe Ethnic Awareness: With Special Consideration of the Sibe People of the Ili River Basin

2019 ◽  
Vol 5 (1) ◽  
pp. 50-76
Author(s):  
Cmr. Zhuangsheng
Keyword(s):  
Ethnic Group ◽  
River Basin ◽  
Close Relation ◽  
Ethnic Origin ◽  
Written Language ◽  
Republic Of China ◽  
The Creation ◽  
The Republic ◽  
Ili River Basin ◽  
Textual Research

In the sixteenth century, the Sibe people emerged as a unique ethnic group, and they remained a unique ethnic group after their migration to the Ili River basin. In the Republic of China, a time when many ethnic systems were created, the Sibe gained official recognition for being an independent ethnic group. Although the creation of a written script is an act of ethnic construction, the Sibe written language could never break free of its close relation to the Manchu written language. The construction of ethnic groups and the creation of written scripts stimulated vigorous development of ethnic histories compiled by the Sibe scholars, and it is their textual research of ethnic origin that best illustrates the birth of this new ethnic group.

Results of studying the dimensional accuracy of the bases of complete removable prostheses made using 3D printing and traditional technologies

2020 ◽  
pp. 34-39
Author(s):  
Vokulova Yu.A. Vokulova ◽  
E.N. Zhulev
Keyword(s):  
3D Printing ◽  
Traditional Method ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Digital Technologies ◽  
Dimensional Accuracy ◽  
3D Printer ◽  
Significance Level ◽  
Average Value ◽  
The Difference

This article presents the results of studying the dimensional accuracy of the bases of complete removable prostheses made using a 3D printer and the traditional method. Bases of complete removable prostheses were made using an intraoral laser scanner iTero Cadent (USA) and a 3D printer Asiga Max UV (Australia). To study the dimensional accuracy of the bases of complete removable prostheses, we used the DentalCAD 2.2 Valletta software. The Nonparametric Wilcoxon W-test was used for statistical analysis of the obtained data. We found that the average value of the difference with the standard for bases made using digital technologies is 0.08744±0.0484 mm. The average value of the difference with the standard for bases made by the traditional method is 0.5654±0.1611 mm. Based on these data, we concluded that the bases of complete removable prostheses made using modern digital technologies (intraoral laser scanning and 3D printer) have a higher dimensional accuracy compared to the bases of complete removable prostheses made using the traditional method with a significance level of p<0.05 (Wilcoxon's W-test=0, p=0.031). Keywords: digital technologies in dentistry, digital impressions, intraoral scanner, 3D printing, ExoCAD, complete removable dentures.

Pax and the Politics of Peace

2017 ◽  
Author(s):  
Hannah Cornwell
Keyword(s):  
Civil War ◽  
Political System ◽  
The Political ◽  
Power Dynamics ◽  
Roman Imperialism ◽  
Two Generations ◽  
Pax Romana ◽  
The Creation ◽  
The Republic ◽  
Insight Into

This book examines the two generations that spanned the collapse of the Republic and the Augustan period to understand how the concept of pax Romana, as a central ideology of Roman imperialism, evolved. The author argues for the integral nature of pax in understanding the changing dynamics of the Roman state through civil war to the creation of a new political system and world-rule. The period of the late Republic to the early Principate involved changes in the notion of imperialism. This is the story of how peace acquired a central role within imperial discourse over the course of the collapse of the Republican framework to become deployed in the legitimization of the Augustan regime. It is an examination of the movement from the debates over the content of the concept, in the dying Republic, to the creation of an authorized version controlled by the princeps, through an examination of a series of conceptions about peace, culminating with the pax augusta as the first crystallization of an imperial concept of peace. Just as there existed not one but a series of ideas concerning Roman imperialism, so too were there numerous different meanings, applications, and contexts within which Romans talked about ‘peace’. Examining these different nuances allows us insight into the ways they understood power dynamics, and how these were contingent on the political structures of the day. Roman discourses on peace were part of the wider discussion on the way in which Rome conceptualized her Empire and ideas of imperialism.

scholarly journals Estimation of Vegetation-Induced Flow Resistance for Hydraulic Computations Using Airborne Laser Scanning Data

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1864
Author(s):  
Peter Mewis
Keyword(s):  
Laser Scanning ◽  
Flow Resistance ◽  
Laser Scanner ◽  
Airborne Laser Scanning ◽  
Density Parameter ◽  
Vegetation Density ◽  
Airborne Laser Scanner ◽  
Airborne Laser ◽  
Bed Roughness ◽  
Available Information

The effect of vegetation in hydraulic computations can be significant. This effect is important for flood computations. Today, the necessary terrain information for flood computations is obtained by airborne laser scanning techniques. The quality and density of the airborne laser scanning information allows for more extensive use of these data in flow computations. In this paper, known methods are improved and combined into a new simple and objective procedure to estimate the hydraulic resistance of vegetation on the flow in the field. State-of-the-art airborne laser scanner information is explored to estimate the vegetation density. The laser scanning information provides the base for the calculation of the vegetation density parameter ωp using the Beer–Lambert law. In a second step, the vegetation density is employed in a flow model to appropriately account for vegetation resistance. The use of this vegetation parameter is superior to the common method of accounting for the vegetation resistance in the bed resistance parameter for bed roughness. The proposed procedure utilizes newly available information and is demonstrated in an example. The obtained values fit very well with the values obtained in the literature. Moreover, the obtained information is very detailed. In the results, the effect of vegetation is estimated objectively without the assignment of typical values. Moreover, a more structured flow field is computed with the flood around denser vegetation, such as groups of bushes. A further thorough study based on observed flow resistance is needed.

The conservation of migratory fishes in the second largest river basin of South America depends on the creation of new protected areas

2021 ◽  
Author(s):  
Dayani Bailly ◽  
Valéria Flavia Batista‐Silva ◽  
Fernanda A. Silva Cassemiro ◽  
Priscila Lemes ◽  
Weferson Junio Graça ◽  
...  
Keyword(s):  
South America ◽  
Protected Areas ◽  
River Basin ◽  
The Creation ◽  
Migratory Fishes

The Steam Turbine Retrofitting of Six Boiling Water Reactor Units Using Innovative Engineering and Laser Scanning Techniques

2009 ◽  
Author(s):  
Mike Jones ◽  
David J. Nelmes
Keyword(s):  
Steam Turbine ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Boiling Water ◽  
Boiling Water Reactors ◽  
Extensive Experience ◽  
Turbine Generators ◽  
The Usa ◽  
Water Reactors ◽  
Scan Data

Alstom Power is executing the steam turbine retrofit of six nuclear units for Exelon Generation in the USA. The existing turbine-generators are an 1800 RPM General Electric design originally rated at 912 MWe and 1098 MWe and powered by Boiling Water Reactors. 18 Low Pressure inner modules will be replaced, with the first due to be installed in March 2010. This project is particularly challenging — the aggressive retrofit installation schedule is compounded by the requirement to handle radioactively contaminated equipment and also comply with demanding regulations applicable to BWR plant. The author’s company has extensive experience in the steam turbine retrofit business, having supplied around 800 retrofit cylinders globally since the 1970’s. However, this LP upgrade challenges the established techniques used in the business and requires extraordinary effort. Traditional retrofit engineering and installation principles have been interrogated and developed to meet the specific requirements of this project. Innovative techniques are introduced, including the extensive use of the Leica HDS 6000 laser scanner to model the existing plant. The approach has advanced the field of steam turbine retrofit design and installation significantly. The first section of this paper focuses on the extraordinary considerations of the project and the challenges surrounding BWR plant. The second part describes the laser scanning technique and the application of scan data. It outlines the innovative solutions which have been developed.

Extraction of road boundary from MLS data using laser scanner ground trajectory

2021 ◽  
Vol 13 (1) ◽  
pp. 690-704
Author(s):  
Lichun Sui ◽  
Jianfeng Zhu ◽  
Mianqing Zhong ◽  
Xue Wang ◽  
Junmei Kang
Keyword(s):  
Laser Scanning ◽  
Laser Scanner ◽  
Boundary Tracking ◽  
The Road ◽  
Navigation Data ◽  
Vehicle Trajectories ◽  
Upward Slope ◽  
Tracking Model ◽  
On The Road ◽  
Boundary Model

Abstract Various means of extracting road boundary from mobile laser scanning data based on vehicle trajectories have been investigated. Independent of positioning and navigation data, this study estimated the scanner ground track from the spatial distribution of the point cloud as an indicator of road location. We defined a typical edge block consisting of multiple continuous upward fluctuating points by abrupt changes in elevation, upward slope, and road horizontal slope. Subsequently, such edge blocks were searched for on both sides of the estimated track. A pseudo-mileage spacing map was constructed to reflect the variation in spacing between the track and edge blocks over distance, within which road boundary points were detected using a simple linear tracking model. Experimental results demonstrate that the ground trajectory of the extracted scanner forms a smooth and continuous string just on the road; this can serve as the basis for defining edge block and road boundary tracking algorithms. The defined edge block has been experimentally verified as highly accurate and strongly noise resistant, while the boundary tracking algorithm is simple, fast, and independent of the road boundary model used. The correct detection rate of the road boundary in two experimental data is more than 99.2%.

Оксана Кукуруз, Взаимодействие политики и права в процессе общественной трансформации в Украине и Республике Польша

2021 ◽  
pp. 158-162
Author(s):  
Ivanna Kyliushyk
Keyword(s):  
Public Interest ◽  
Book Research ◽  
Social Transformation ◽  
Common Goal ◽  
The Real ◽  
The Public ◽  
The Creation ◽  
The Republic ◽  
Effective Development ◽  
Politics And Law

The author of the book research the interaction of politics and law as two important social regulators that have a common goal the effective development of society. The author defines the real models of interaction between politics and law, which have formed in Ukraine and the Republic of Poland in the process of social transformation, and the creation of an appropriate model, which should be based on the goal of ensuring the public interest.

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