scholarly journals Entropy Characteristic on Harmonious Unifying Hybrid Preferential Networks

Entropy ◽  
2007 ◽  
Vol 9 (2) ◽  
pp. 73-82 ◽  
Author(s):  
Yong Li ◽  
Jin-Qing Fang ◽  
Qiao Bi ◽  
Qiang Liu
Keyword(s):  
Entropy Characteristic

CO2 or SO2: Should It Stay or Should It Go?

2019 ◽  
Author(s):  
Gabriel dos Passos Gomes ◽  
Alexander Wimmer ◽  
Joel Smith ◽  
Burkhard König ◽  
Igor Alabugin
Keyword(s):  
Computational Analysis ◽  
Cross Coupling ◽  
Radical Formation ◽  
Structural Effects ◽  
Two Factors ◽  
Carbon Centered Radical ◽  
Dissociative Processes ◽  
Entropy Characteristic

<div><div><div><p>A broad computational analysis of carbon-centered radical formation via the loss of either CO2 or SO2 from the respective RXO2 radical precursors (X = C or S) reveals dramatic differences between these two types of dissociative processes. Whereas the C-C scission with the loss of CO2 is usually exothermic, the C-S scission with the loss of SO2 is generally endothermic. However, two factors can make the C-S scissions thermodynamically favorable: increased entropy, characteristic for the dissociative processes, and stereoelectronic influences of substituents. The threshold between endergonic and exergonic C-S fragmentations depends on subtle structural effects. In particular, the degree of fluorination in a radical precursor has a notable impact on the reaction outcome. This study aims to demystify the intricacies in reactivity regarding the generation of radicals from sulfinates and carboxylates, as related to their role in radical cross-coupling.</p></div></div></div>

scholarly journals Identifying the high entropy characteristic in La-based metallic glasses

2021 ◽  
Vol 119 (5) ◽  
pp. 051905
Author(s):  
Langting Zhang ◽  
Yajuan Duan ◽  
Daniel Crespo ◽  
Eloi Pineda ◽  
Takeshi Wada ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
High Entropy ◽  
Entropy Characteristic

scholarly journals CO2 or SO2: Should It Stay or Should It Go?

2019 ◽  
Author(s):  
Gabriel dos Passos Gomes ◽  
Alexander Wimmer ◽  
Joel Smith ◽  
Burkhard König ◽  
Igor Alabugin
Keyword(s):  
Computational Analysis ◽  
Cross Coupling ◽  
Radical Formation ◽  
Structural Effects ◽  
Two Factors ◽  
Carbon Centered Radical ◽  
Dissociative Processes ◽  
Entropy Characteristic

<div><div><div><p>A broad computational analysis of carbon-centered radical formation via the loss of either CO2 or SO2 from the respective RXO2 radical precursors (X = C or S) reveals dramatic differences between these two types of dissociative processes. Whereas the C-C scission with the loss of CO2 is usually exothermic, the C-S scission with the loss of SO2 is generally endothermic. However, two factors can make the C-S scissions thermodynamically favorable: increased entropy, characteristic for the dissociative processes, and stereoelectronic influences of substituents. The threshold between endergonic and exergonic C-S fragmentations depends on subtle structural effects. In particular, the degree of fluorination in a radical precursor has a notable impact on the reaction outcome. This study aims to demystify the intricacies in reactivity regarding the generation of radicals from sulfinates and carboxylates, as related to their role in radical cross-coupling.</p></div></div></div>

scholarly journals Pattern Recognition of Partial Discharge by Using Scale parameters-Energy Entropy Characteristic Pairs

2019 ◽  
Vol 136 ◽  
pp. 01026
Author(s):  
Liu Dongchao ◽  
Xiong Hui ◽  
Zhu Xiaotong ◽  
Xu Lei
Keyword(s):  
Wavelet Transform ◽  
Partial Discharge ◽  
Structure Characteristic ◽  
Complex Wavelet Transform ◽  
Scale Parameters ◽  
Energy Entropy ◽  
Feature Information ◽  
Complex Wavelet ◽  
Feature Dimension ◽  
Entropy Characteristic

In this paper, the complex wavelet transform (CWT) was used to process the ultra-high frequency partial discharge (UHF PD) signal in gas insulated switchgear (GIS) at different scales. The trend curves of complex wavelet transform energy entropy (CWT-EE) under different decomposition scale were analyzed, and it was found that the PD feature information mainly distributed in the scales, in which the gradient of CWT-EE is big. Besides, The CWT-EE characteristics and their scales were extracted to the structure characteristic pairs for PD type identification. The recognition results show that the characteristic pair could effectively identify four typical defects in GIS and obviously reduce the feature dimension.

scholarly journals Computer Simulation as an Effective Tool Supporting Decision-Making Processes in Air Defense

2019 ◽  
Vol 5 (1) ◽  
pp. 1-5
Author(s):  
Adam RADOMYSKI ◽  
Krzysztof CUR
Keyword(s):  
Decision Making ◽  
Computer Simulation ◽  
Air Force ◽  
Information Entropy ◽  
State Of The Art ◽  
Decision Making Process ◽  
Air Defense ◽  
Decision Making Processes ◽  
Entropy Characteristic ◽  
Use Of Models

This article outlines the results of studies concerning supporting the decision-making process in air defense with the use of state-of-the art computer simulator. The simulator is intended to simulate air force operations and air defense in the air, and the simulated facilities are supposed to reflect real and hypothetical facilities. It allows us to conduct experiments with the use of models showing particular fragments of reality, which reduce information entropy characteristic of contemporary decision-making situations in air defense.

scholarly journals CO2 or SO2: Should It Stay or Should It Go

2018 ◽  
Author(s):  
Gabriel dos Passos Gomes ◽  
Alexander Wimmer ◽  
Joel Smith ◽  
Burkhard König ◽  
Igor Alabugin
Keyword(s):  
Computational Analysis ◽  
Cross Coupling ◽  
Radical Formation ◽  
Structural Effects ◽  
Stereoelectronic Effects ◽  
Two Factors ◽  
Carbon Centered Radical ◽  
Dissociative Processes ◽  
Entropy Characteristic

<p>A broad computational analysis of carbon-centered radical formation via the loss of either CO<sub>2</sub> or SO<sub>2</sub> from the respective RXO<sub>2</sub> radical precursors (X = C or S) reveals dramatic differences between these two types of dissociative processes. Whereas the C-C scission with the loss of CO<sub>2</sub> is usually exothermic, the C-S scission with the loss of SO<sub>2</sub> is generally endothermic. However, two factors can make the C-S scissions thermodynamically favorable: increased entropy, characteristic for the dissociative processes, and substituent stereoelectronic effects. The threshold between endergonic and exergonic C-S fragmentations depends on subtle structural effects. In particular, the degree of fluorination in a radical precursor has a notable impact on the reaction outcome. This study aims to demystify the intricacies in reactivity regarding the generation of radicals from sulfinates and carboxylates, as related to their role in radical cross-coupling.</p>

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