Results 241 to 250 of about 2,564,259 (289)

Predicting the Uniform Electron Gas Stopping Power at Moderate and Strong Coupling

Contributions to Plasma Physics, EarlyView.
ABSTRACT This paper presents a detailed study of the stopping power of a homogeneous electron gas in moderate and strong coupling regimes using the self‐consistent version of the method of moments as the key theoretical approach capable of expressing the dynamic characteristics of the system in terms of the static ones, which are the moments.
Saule A. Syzganbayeva, Alexey V. Filinov, Jesús Ara, Assel B. Ashikbayeva, Abdiadil Askaruly, Lazzat T. Yerimbetova, Manuel D. Barriga‐Carrasco, Yuriy V. Arkhipov, Igor M. Tkachenko   +8 more
wiley   +1 more source

Study on damage and failure characteristics of loaded gas‐bearing rock–coal–rock combination structures

Deep Underground Science and Engineering, EarlyView.
The influence of gas on the instability and failure of rock–coal–rock combinations is considered. The damage characteristics of gas‐bearing rock–coal–rock combinations under different confining pressures, axial loading rates, and gas are revealed. A constitutive model for gas‐bearing rock–coal–rock damage considering gas is established.
Feng Du, Kai Wang, Wanyu Yang, Jiazhi Sun, Xiyang Fang, Yiyang Zhang, Longyong Shu, Liang Wang, Jiaxu Zhou   +8 more
wiley   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Random finite element analysis on ground subsidence caused by tunnel excavation in karst regions with spatial variable soil

Deep Underground Science and Engineering, EarlyView.
This study investigates ground subsidence during tunnel excavation in karst areas, highlighting the combined effects of karst cave proximity, cave size, and soil spatial variability. Findings suggest that shorter cave distances and larger cave sizes increase subsidence variability, and a modified Peck formula is proposed for more accurate subsidence ...
Zhenghong Su, Yong Fu, Miaomiao Sun, Kailin Ding, Ying Zhao   +4 more
wiley   +1 more source

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The Fourier Transform Identity Theorem

The Annals of Mathematics, 1931
It is known that a function f (x) of integrable square possesses a Fourier transform F(x) also of integrable square and that the Fourier transform of F(x) is precisely f(x).
A. C. Berry
semanticscholar   +3 more sources

An identity theorem for multi-relator groups

Mathematical Proceedings of the Cambridge Philosophical Society, 1991
In this paper, the Identity Theorem of R. C. Lyndon and the Freiheitssatz of W. Magnus are extended to a large class of multi-relator groups. Included are the two-relator groups introduced by I. L. Anshel in her thesis, where the Freiheitssatz was proved for those groups.
W. A. Bogley
semanticscholar   +3 more sources

P2B: Privacy Preserving Identity-Based Broadcast Proxy Re-Encryption

IEEE Transactions on Vehicular Technology, 2020
This paper proposes Privacy Preserving Identity-Based Broadcast Proxy Re-encryption (P2B) — a scheme to provide privacy preserving in identity-based broadcast proxy re-encryption.
Sumana Maiti, S. Misra
semanticscholar   +1 more source

The reciprocal theorem in fluid dynamics and transport phenomena

Journal of Fluid Mechanics, 2019
In the study of fluid dynamics and transport phenomena, key quantities of interest are often the force and torque on objects and total rate of heat/mass transfer from them.
Hassan Masoud, H. Stone
semanticscholar   +1 more source

Generalization of Noether’s Theorem in Modern Form to Non-variational Partial Differential Equations

, 2016
A general method using multipliers for finding the conserved integrals admitted by any given partial differential equation (PDE) or system of partial differential equations is reviewed and further developed in several ways.
S. Anco
semanticscholar   +1 more source

Stokes’ theorem, Stein’s identity and completeness

Statistics & Probability Letters, 2016
Abstract We study the relation between Stein’s theorem and Stokes’ theorem (or the divergence theorem) and show, using completeness of certain exponential families, that they are equivalent, in a certain sense, by using each to prove a version of the other.
William E. Strawderman, Dominique Fourdrinier   +1 more
openaire   +2 more sources