Results 101 to 110 of about 1,058,735 (299)

Minimum Fill-in on Circle and Circular-Arc Graphs

, 1996
We present two algorithms solving the minimum fill-in problem on circle graphs and on circular-arc graphs in time O(n³)
T. Kloks, C. K. Wong, D. Kratsch
core   +1 more source

Phase‐Pure and Size‐Tunable Tin Halide Perovskite Quantum Dots

Advanced Materials, EarlyView.
A trioctylphosphine oxide modulated protocol allows for the synthesis and study of the optical properties of a broad library of tin halide perovskite quantum dots across multiple A‐ and X‐site compositions with precise size tuning while eliminating unwanted 2D phases.
Ole F. Dressler, Benjamin Aymoz, Sebastian Sabisch, Stefanie Frick, Sebastian Siol, Dmitry N. Dirin, Simon C. Boehme, Maksym V. Kovalenko   +7 more
wiley   +1 more source

Modeling and Kinematics Simulation of Elliptical Gears with Double Circular Arc Profiles

Jixie chuandong
In order to meet the requirements of variable transmission ratios and improve the bearing capacity of gear teeth, a new type of double-circular-arc tooth profile elliptical gear is proposed based on the meshing theory and the structural parameter ...
Yuan Xinmei, Yang Lizhao, Huang Tiancheng, Tang Wei   +3 more
doaj  

Generation principle and meshing characteristics of conjugate-curve circular arc gears

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
The generation principle and meshing characteristics of conjugate-curve circular arc gears, which is proposed based on the theory of conjugate curves, are studied in this paper.
Dong LIANG, Bingkui CHEN, Yan'e GAO, Yongqing ZHANG   +3 more
doaj   +1 more source

Directing Near‐Perfect (001) Orientation in Wafer‐Scale BiOI Thin Films via Halide‐Mediated van der Waals Stacking

Advanced Materials, EarlyView.
Our work introduces a new framework that fundamentally changes how orientation in bismuth oxyhalide systems is approached. Comprehensive experiments, backed by theoretical models, reveal the pivotal role of halide anions to modify the van der Waals stacking energies required to direct orientation. Our method enables the fabrication of near perfect (001)
Gabriel Aygur, Ashakiran Maibam, Hayden Tuohey, Tony Nguyen, Mei Xian Low, Sumeet Walia, Zijun (June) Yong, Ravichandar Babarao, Daniel Gomez, Enrico Della Gaspera, Joel van Embden   +10 more
wiley   +1 more source

On some subclasses of circular arc-graphs

, 1999
The intersection graph of a family of arcs on a circle is called a circular-arc graph. This class of graphs admits some interesting subclasses: proper circular-arc graphs, unit circular-arc graphs, Helly circular-arc graphs and clique-Helly circular-arc ...
Guillermo Durán, Min Chih Lin
core  

Current Development Situation and Prospect of Circular-Arc Gear

, 2011
This article introduced the current development situation and prospect of circular-arc gear in China from the following aspects: theory of engagement, the gear strength, advanced processing technology, accuracy and measurement, and application of ...
Hong Mei Gao, Shi Jun Liu, Yang Liu, Yuan Chen   +3 more
core   +1 more source

Regulating Phase Evolution and Crystallization Dynamics Enables Low Open‐Circuit Voltage Deficit in Wide‐Bandgap Cu2ZnSnS4 Solar Cells

Advanced Materials, EarlyView.
Bilayer composition‐modulated sulfurization (BCMS) regulates Cu redistribution in solution‐processed Cu2ZnSnS4, suppressing Cu2SnS3 and favoring the direct transformation pathway, while transforming the crystallization from surface‐dominated growth to a more synchronized process.
Hang Geng, Jingwen Cao, Jialiang Huang, Ao Wang, Zuoyun Wang, Xiaojie Yuan, Yidong Liu, Chenghan Zhao, Jialin Cong, Kaiwen Sun, Xiaojing Hao   +10 more
wiley   +1 more source

Simulation and Experimental Research on Tooth Power Skiving Cutting of Double-circular-arc Internal Gears

Jixie chuandong
A method for machining double-circular-arc internal gears using power skiving technology is proposed to address the current problems of difficulty, poor accuracy, and low efficiency in machining double-circular-arc internal gears.
Wang Feng, Yang Shufeng, Xu Wenbo, Zhang Weijie, Yu Wentao   +4 more
doaj  

Paired domination on interval and circular-arc graphs

, 2007
We study the paired-domination problem on interval graphs and circular-arc graphs. Given an interval model with endpoints sorted, we give an O(m+n) time algorithm to solve the paired-domination problem on interval graphs.
Cheng, TCE, Ng, CTD, Ng, C.T., Cheng, T.C.E., Kang, L.Y., Kang, L   +5 more
core   +1 more source