Results 31 to 40 of about 55,618 (308)
Sequence Hypergraphs: Paths, Flows, and Cuts [PDF]
, 2018 We introduce sequence hypergraphs by extending the concept of a directed edge (from simple directed graphs) to hypergraphs. Specifically, every hyperedge of a sequence hypergraph is defined as a sequence of vertices (not unlike a directed path). Sequence hypergraphs are motivated by problems in public transportation networks, as they conveniently ...
Böhmová, Kateřina +4 more
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Boom-type roadheader autonomous speed regulation cutting control system
Gong-kuang zidonghua, 2023 The existing boom-type roadheader cutting control adopts a relatively simple control method and the cutting head completes the roadway section cutting at a constant speed. There's no comprehensive consideration of trajectory planning and autonomous speed
ZHANG Xuhui +5 more
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$k$-cut on paths and some trees
Electronic Journal of Probability, 2019 We define the (random) $k$-cut number of a rooted graph to model the difficulty of the destruction of a resilient network. The process is as the cut model of Meir and Moon except now a node must be cut $k$ times before it is destroyed. The first order terms of the expectation and variance of $\mathcal{X}_{n}$, the $k$-cut number of a path of length $n$,
Cai, Xing Shi +3 more
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An Optimal Algorithm for Planning Shearer Trailing Drum Cutting Path
Shock and Vibration, 2021 The intelligent adaptive cutting of the shearer is one of the key technologies to realize the intelligent working face. However, since the “memory cut” technology is the mainstream technology, which cannot actively adapt to the coal seam variations, the ...
Hong Zhang +6 more
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Metals, 2022 Most of the parts of an aircraft require the use of lightweight and high-strength materials. Since aircraft parts mainly use mechanical cutting processes, which are the most suitable material removal mechanism, to minimize changes in material properties,
Wan-Sik Woo +5 more
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Lattice path moments by cut and paste
Advances in Applied Mathematics, 2003 The authors consider lattice paths in the coordinate plane, whose step types consist of \((1,1)\), \((1,-1)\), and possibly of one or more horizontal steps. For the set of such paths running from \((0, 0)\) to \((n+2,0)\) and remaining elsewhere strictly above the horizontal axis, the authors define and study a zeroth moment (cardinality), a first ...
PINZANI, RENZO +3 more
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Applied Sciences, 2023 Space adaptability between mining equipment and coal-rock mass, to ensure the machines cut in a coal seam, is an importance technique in longwall mining automation.
Zenglun Guan +3 more
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Micromachines, 2021 Aero-engine blades are manufactured by electroforming process with electrodes. The blade electrode is usually machined with five-axis micromilling to get required profile roughness. Tool path planning parameters, such as cutting step and tool tilt angle,
Yue Liu +5 more
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International Journal of Pure and Applied Mathematics Research, 2023 \documentclass[10pt,letterpaper]{article} \usepackage[top=0.85in,left=2.79in,footskip=0.79in,marginparwidth=2in]{geometry} \usepackage{amsmath, amsthm, amscd, amsfonts, amssymb, graphicx, tikz, color} \usepackage[bookmarksnumbered, colorlinks, plainpages]{hyperref} % use Unicode characters - try changing the option if you run into troubles with special
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Cutting Path Optimization Using Tabu Search [PDF]
Key Engineering Materials, 2011 This paper deals with generating paths for cutting irregular parts nested on a metal sheet. The objective is to minimize the total non-cutting time for the cutter head starting at a known location, cutting all the required elements and returning to the known location. In contrast to most literature on this topic, a part does not have to be cut at once.
Dewil, Reginald +2 more
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