Results 11 to 20 of about 3,721,565 (340)

Design on Waterproof Safety Coal Pillar at Outcrop Area of Thick Coal Seam Under he Large Thick Jurassic Red Stratum

open access: yesMeikuang Anquan, 2020
To study the waterproof coal pillar design for mining in the outcrop area of thick coal seam in Shanxi Formation under the large Jurassic red stratum in the seventh mining area planned and designed by Dongtan Coal Mine, the systematic analysis is ...
XIE Huadong
doaj   +1 more source

Proposal of Contour Line Model for High-Speed End Milling Simulation

open access: yesInternational Journal of Automation Technology, 2020
A contour line model for end milling simulation, which realizes high-speed arithmetic processing by reducing memory usage, is proposed. In this model, a 3-dimensional shape can be expressed by superimposing the contour lines of the cross-sections ...
Isamu Nishida, K. Shirase
semanticscholar   +1 more source

Frequency Contour-Strip Method for Characterization of Damage in Structures under Noisy Conditions

open access: yesApplied Sciences, 2021
Eigen-frequency, compared with mode shape and damping, is a more practical and reliable dynamic feature to portray structural damage. The frequency contour-line method relying on this feature is a representative method to identify damage in beam-type ...
Jiayi Peng   +6 more
doaj   +1 more source

Object-Oriented Building Contour Optimization Methodology for Image Classification Results via Generalized Gradient Vector Flow Snake Model

open access: yesRemote Sensing, 2021
Building boundary optimization is an essential post-process step for building extraction (by image classification). However, current boundary optimization methods through smoothing or line fitting principles are unable to optimize complex buildings.
Jingxin Chang   +3 more
doaj   +1 more source

The Investigation of the Balanced Output Power of Multi-Section Tunable Laser Based On Reconstruction-Equivalent Chirp Technique

open access: yesIEEE Photonics Journal, 2021
A method to get balanced output power of a current-controlled in-line semiconductor laser based on REC technique is investigated. By mapping the contour lines of the P-I contour diagram of this in-line tunable laser into the wavelength-current contour ...
Renjia Guo   +3 more
doaj   +1 more source

Implementation of computer technologies in descriptive geometry teaching: Surfaces of revolution [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2003
The proper estimation of computer technologies is very important when computers are to be implemented in the educational process. Otherwise, if not implemented properly, the quality of students' education may be seriously imperiled.
Štulić Radovan B.   +1 more
doaj   +1 more source

The mid-level vision toolbox for computing structural properties of real-world images

open access: yesFrontiers in Computer Science, 2023
Mid-level vision is the intermediate visual processing stage for generating representations of shapes and partial geometries of objects. Our mechanistic understanding of these operations is limited, in part, by a lack of computational tools for analyzing
Dirk B. Walther   +3 more
doaj   +1 more source

A Reconstruction Method for Broken Contour Lines Based on Similar Contours

open access: yesISPRS International Journal of Geo-Information, 2018
The reconstruction of a broken contour line is a prerequisite for the automated processing of contour lines. When the situation with broken contour lines is severe or the terrain is more complex, incorrect and missing connections are most likely to occur
Chengming Li   +3 more
doaj   +1 more source

Inter-element orientation and distance influence the duration of persistent contour integration

open access: yesFrontiers in Psychology, 2014
Contour integration is a fundamental form of perceptual organization. We introduce a new method of studying the mechanisms responsible for contour integration.
Lars eStrother   +2 more
doaj   +1 more source

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