Results 21 to 30 of about 1,652,719 (226)

Discrete-element modeling of strain localization in a dense and highly coordinated periodic granular assembly

open access: yesFracture and Structural Integrity, 2022
Strain localization is one of the key phenomena which has been extensively studied in geomaterials and for other kinds of materials including metals and polymers. This well-known phenomenon appears when structure/material is closed to failure.
Trung-Kien Nguyen   +2 more
doaj   +1 more source

Measuring High Level Democratic Principles using the V-Dem Data [PDF]

open access: yes, 2015
While the definition of extended conceptions of democracy has been widely discussed, the measurement of these constructs has not attracted similar attention.
Skaaning, Svend-Erik   +14 more
core   +2 more sources

TanDEM-X DEM Calibration: Correction of systematic DEM errors by block adjustment [PDF]

open access: yes, 2009
This paper gives an overview of the DEM adjustment within the TanDEM-X mission. The DEM adjustment estimates residual, systematic height offsets and deformations of each single interferometric DEM acquisition.
Astrid Gruber   +5 more
core   +1 more source

Study on the technical parameters model of the functional components of cone crushers

open access: yesNonlinear Engineering, 2022
A cone crusher is a machine that crushes rock materials with high efficiency and low power consumption; it is one of the typical road construction equipment.
Yu Luo-jian, Tong Xin
doaj   +1 more source

V-Dem Comparisons and Contrasts with Other Measurement Projects [PDF]

open access: yes, 2017
For policymakers, activists, academics, and citizens around the world the conceptualization and measurement of democracy matters. The needs of democracy promoters and social scientists are convergent. We all need better ways to measure democracy.
Skaaning, Svend-Erik   +9 more
core   +2 more sources

Using apriori information in interferometric processing of high resolution sar data

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The paper presents an analysis of approaches to using apriori information on relief to improve the quality of spaceborne SAR data interferometric processing.
V. A. Ushenkin, N. A. Egoshkin
doaj   +1 more source

Varieties of Democracy (V-DEM) Annual Report 2019 - "Democracy Facing Global Challenges” [PDF]

open access: yes, 2019
Democracy in decline in more countries than ever before. The 2019 Democracy Report is titled “Democracy Facing Global Challenges”. Democratic declines now affect more countries than ever before.

core   +1 more source

Coherent Markov Random Field-Based Unreliable DSM Areas Segmentation and Hierarchical Adaptive Surface Fitting for InSAR DEM Reconstruction

open access: yesSensors, 2020
A digital elevation model (DEM) can be obtained by removing ground objects, such as buildings, in a digital surface model (DSM) generated by the interferometric synthetic aperture radar (InSAR) system. However, the imaging mechanism will cause unreliable
Qian Qian   +3 more
doaj   +1 more source

DEM-based analysis of morphometric features in humid and hyper-arid environments using artificial neural network [PDF]

open access: yesDesert, 2009
This paper presents a robust approach using artificial neural networks in the form of a Self Organizing Map (SOM) as a semi-automatic method for analysis and identification of morphometric features in two completely different environments, the Man and ...
A.H Ehsani, F. Quiel
doaj   +1 more source

Search for the waterfalls in Ethiopia using remote sensing data

open access: yesТрансформация экосистем, 2021
Waterfalls are specific hydrological and hydrobiological objects that often serve as the natural obstacles for spreading of aquatic animal species, resulting as discontinuous range of these species.
Alexey V. Kutuzov
doaj   +1 more source

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