Results 111 to 120 of about 224,342 (242)

Research on Crack Propagation and Stress Propagation in Coal‐Rock Combinations Under Different In Situ Stresses Subjected to Blasting Loads

Energy Science &Engineering, EarlyView.
A stress wave propagation model for coal‐rock combinations under in situ stress was established. Taking a coal mine in Huainan, China as the engineering background, isotropic and anisotropic numerical models were constructed. Field engineering practices were carried out to verify the reliability of the conclusions.
Jianyu Zhang, Guangming Chen, Meiyao Li, Xinyu Wang, Yuting Liu, Renjie Cui, Yixin Gong   +6 more
wiley   +1 more source

A New Digital Signature Scheme Based on Mandelbrot and Julia Fractal Sets. [PDF]

, 2007
This paper describes a new cryptographic digital signature scheme based on Mandelbrot and Julia fractal sets. Having fractal based digital signature scheme is possible due to the strong connection between the Mandelbrot and Julia fractal sets.
Alia, Mohammad Ahmad, Samsudin, Azman
core   +1 more source

THE HADAMARD FRACTIONAL CALCULUS OF A FRACTAL FUNCTION

, 2018
This paper investigates the Hadamard fractional calculus of a fractal function. It is proved that there exists some linear relationship between the order of Hadamard fractional calculus and the fractal dimension of the Weierstrass function including Box
KUI YAO, YIPENG WU, XIA ZHANG
core   +1 more source

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

Energy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu, Lei Guo, Zedong Sun, Xiaowei Wu, Nan Zhang   +4 more
wiley   +1 more source

New Approaches to Fractal–Fractional Bullen’s Inequalities Through Generalized Convexity

Fractal and Fractional
This paper introduces a new identity involving fractal–fractional integrals, which allow us to derive several new Bullen-type inequalities via generalized convexity.
Wedad Saleh, Hamid Boulares, Abdelkader Moumen, Hussien Albala, Badreddine Meftah   +4 more
doaj   +1 more source

Donor‐acceptor fractal synergy: Decoding self‐similarity for stable organic photovoltaics

FlexMat, EarlyView.
Morphological congruence between donor and acceptor refines the fractal structure of bulk heterojunction films and enhances their self‐similarity. This optimized multiscale morphology preserves charge‐transport pathways against external disturbances, suppresses structural degradation, and improves the operational stability of organic solar cells while ...
Runzheng Gu, Zhongwei Ge, Yiyun Li, Fengzhe Cui, Zhen Fu, Mingxu Zhou, Dongcheng Jiang, Jiangkai Sun, Jianqiang Liu, Kangning Zhang, Feng Chen, Hang Yin, Yanming Sun, Xiaotao Hao   +13 more
wiley   +1 more source

Fractal-fractional estimations of Bullen-type inequalities with applications

Ain Shams Engineering Journal
The study of inequalities inside fractal domains has been stimulated by the growing interest in fractional calculus for the applied and mathematical sciences.
Saad Ihsan Butt, Muhammad Umar Yasin, Sanja Tipurić-Spužević, Bandar Bin-Mohsin   +3 more
doaj   +1 more source

Artificial structures for human‐machine interfaces with closed‐loop interaction

FlexMat, EarlyView.
Artificial structures bridge sensing and feedback in closed‐loop human‐machine interfaces by providing geometry‐enabled mechanical and functional programmability. This review maps the role of artificial structures in diverse sensing modalities and feedback strategies, and illustrates their integration into closed‐loop interaction systems, highlighting ...
Taiqi Hu, Taisong Pan, Siqi Chen, Yiting Zhang, Yuan Lin   +4 more
wiley   +1 more source

Representation of solutions of a second order delay differential equation

Electronic Journal of Differential Equations, 2020
In this article, we study an inhomogeneous second order delay differential equation on the fractal set $\mathbb{R}^{\alpha n ...
Kee Qiu, Jinrong Wang
doaj  

A Review of Probabilistic and Novel Approaches to Cost Assessment in CCUS Projects

Greenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Although the renewable energy sector is making progress, there is still a long way to go before green energy can be fully utilized. In this context, Carbon Capture Utilization and Storage (CCUS) technologies can act as a temporary bridge between a high‐emission past and a low‐emission future.
Majid Mohajeri, Saman Azadbakht
wiley   +1 more source