Influence Maximization Node Mining with Trust Propagation Mechanism

Mechanism of irregular crack-propagation in thermal controlled fracture of ceramics induced by microwave

Mechanics & Industry ◽

10.1051/meca/2020077 ◽

2020 ◽

Vol 21 (6) ◽

pp. 610

Author(s):

Xiaoliang Cheng ◽

Chunyang Zhao ◽

Hailong Wang ◽

Yang Wang ◽

Zhenlong Wang

Keyword(s):

Crack Propagation ◽

Industrial Application ◽

Ceramic Materials ◽

Advanced Technology ◽

Analytical Models ◽

Propagation Mechanism ◽

Unstable Crack ◽

Fracture Simulation ◽

Initial Stage ◽

Controlled Fracture

Microwave cutting glass and ceramics based on thermal controlled fracture method has gained much attention recently for its advantages in lower energy-consumption and higher efficiency than conventional processing method. However, the irregular crack-propagation is problematic in this procedure, which hinders the industrial application of this advanced technology. In this study, the irregular crack-propagation is summarized as the unstable propagation in the initial stage, the deviated propagation in the middle stage, and the non-penetrating propagation in the end segment based on experimental work. Method for predicting the unstable propagation in the initial stage has been developed by combining analytical models with thermal-fracture simulation. Experimental results show good agreement with the prediction results, and the relative deviation between them can be <5% in cutting of some ceramics. The mechanism of deviated propagation and the non-penetrating propagation have been revealed by simulation and theoretical analysis. Since this study provides effective methods to predict unstable crack-propagation in the initial stage and understand the irregular propagation mechanism in the whole crack-propagation stage in microwave cutting ceramics, it is of great significance to the industrial application of thermal controlled fracture method for cutting ceramic materials using microwave.

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Propagation mechanism of laser-supported detonation wave

10.2514/6.1991-385 ◽

1991 ◽

Author(s):

T. FUJIWARA

Keyword(s):

Detonation Wave ◽

Propagation Mechanism

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Sulfamides Direct Radical-Mediated Chlorination of Aliphatic C–H Bonds

10.26434/chemrxiv.8120654 ◽

2019 ◽

Author(s):

Melanie Short ◽

Mina Shehata ◽

Matthew Sanders ◽

Jennifer Roizen

Keyword(s):

Hydrogen Atom ◽

Transfer Reaction ◽

Hydrogen Atom Transfer ◽

Chain Propagation ◽

Propagation Mechanism ◽

Atom Transfer ◽

Radical Chain ◽

Radical Intermediates ◽

Transfer Processes ◽

Unusual Position

Sulfamides guide intermolecular chlorine transfer to gamma-C(sp3) centers. This unusual position-selectivity arises because accessed sulfamidyl radical intermediates engage in otherwise rare 1,6-hydrogen-atom transfer processes. The disclosed chlorine-transfer reaction relies on a light-initiated radical chain-propagation mechanism to oxidize C(sp3)-H bonds.

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Sulfamides Direct Radical-Mediated Chlorination of Aliphatic C–H Bonds

10.26434/chemrxiv.8120654.v3 ◽

2019 ◽

Author(s):

Melanie Short ◽

Mina Shehata ◽

Matthew Sanders ◽

Jennifer Roizen

Keyword(s):

Hydrogen Atom ◽

Transfer Reaction ◽

Hydrogen Atom Transfer ◽

Chain Propagation ◽

Propagation Mechanism ◽

Atom Transfer ◽

Radical Chain ◽

Radical Intermediates ◽

Transfer Processes ◽

Unusual Position

Sulfamides guide intermolecular chlorine transfer to gamma-C(sp3) centers. This unusual position-selectivity arises because accessed sulfamidyl radical intermediates engage in otherwise rare 1,6-hydrogen-atom transfer processes. The disclosed chlorine-transfer reaction relies on a light-initiated radical chain-propagation mechanism to oxidize C(sp3)-H bonds.

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Influence maximization algorithm for micro-blog network

Journal of Computer Applications ◽

10.3724/sp.j.1087.2013.02091 ◽

2013 ◽

Vol 33 (8) ◽

pp. 2091-2094 ◽

Cited By ~ 1

Author(s):

Kai WU ◽

Xinsheng JI ◽

Jinshi GUO ◽

Caixia LIU

Keyword(s):

Influence Maximization

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Farm Product Prices, Redistribution, and the Early U.S. Great Depression

The Journal of Economic History ◽

10.1017/s0022050721000334 ◽

2021 ◽

pp. 1-39

Author(s):

Joshua K. Hausman ◽

Paul W. Rhode ◽

Johannes F. Wieland

Keyword(s):

Great Depression ◽

Propagation Mechanism ◽

Farm Product ◽

Retail Prices ◽

Marginal Propensity ◽

Pass Through

We argue that falling farm product prices, incomes, and spending may explain 10–30 percent of the 1930 U.S. output decline. Crop prices collapsed, reducing farmers’ incomes. And across U.S. states and Ohio counties, auto sales fell most in crop-growing areas. The large spending response may be explained by farmers’ indebtedness. Reasonable assumptions about the marginal propensity to spend of farmers relative to nonfarmers and the pass-through of farm prices to retail prices imply that the collapse of farm product prices in 1930 was a powerful propagation mechanism worsening the Depression.

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