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Search Results: 1 - 10 of 41221 matches for " Feng Gu "
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Geomechanical Modeling of Stress and Fracture Distribution during Contractional Fault-Related Folding  [PDF]
Jianwei Feng, Kaikai Gu
Journal of Geoscience and Environment Protection (GEP) , 2017, DOI: 10.4236/gep.2017.511006
Abstract: Understanding and predicting the distribution of fractures in the deep tight sandstone reservoir are important for both gas exploration and exploitation activities in Kuqa Depression. We analyzed the characteristics of regional structural evolution and paleotectonic stress setting based on acoustic emission tests and structural feature analysis. Several suites of geomechanical models and experiments were developed to analyze how the geological factors influenced and controlled the development and distribution of fractures during folding. The multilayer model used elasto-plastic finite element method to capture the stress variations and slip along bedding surfaces, and allowed large deformation. The simulated results demonstrate that this novel Quasi-Binary Method coupling composite failure criterion and geomechanical model can effectively quantitatively predict the developed area of fracture parameters in fault-related folds. High-density regions of fractures are mainly located in the fold limbs during initial folding stage, then gradually migrate from forelimb to backlimb, from limbs to hinge, from deep to shallow along with the fold uplift. Among these factors, the fold uplift and slip displacement along fault have the most important influence on distributions of fractures and stress field, meanwhile the lithology and distance to fault have also has certain influences. When the uplift height exceeds approximately 55 percent of the total height of fold the facture density reaches a peak, which conforms to typical top-graben fold type with large amplitude and high-density factures in the top. The overall simulated results match well with core observation and FMI results both in the whole geometry and fracture distribution.
Strong Convergence of Parallel Iterative Algorithm with Mean Errors for Two Finite Families of ?iri? Quasi-Contractive Operators
Feng Gu
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/626547
Abstract: The purpose of this paper is to establish a strong convergence of a new parallel iterative algorithm with mean errors to a common fixed point for two finite families of Ćirić quasi-contractive operators in normed spaces. The results presented in this paper generalize and improve the corresponding results of Berinde, Gu, Rafiq, Rhoades, and Zamfirescu.
Common Fixed Point Theorems for Six Mappings in Generalized Metric Spaces
Feng Gu
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/379212
Abstract:
Strong Convergence of an Implicit Iteration Process for a Finite Family of Uniformly L-Lipschitzian Mappings in Banach Spaces
Feng Gu
Journal of Inequalities and Applications , 2010, DOI: 10.1155/2010/801961
Abstract: The purpose of this paper is to prove a strong convergence theorem for a finite family of uniformly L-Lipschitzian mappings in Banach spaces. The results presented in the paper improve and extend the corresponding results announced by Chang (2001), Cho et al. (2005), Ofoedu (2006), Schu (1991) and Zeng (2003 and 2005), and many others.
Strong Convergence of an Implicit Iteration Process for a Finite Family of Uniformly -Lipschitzian Mappings in Banach Spaces
Gu Feng
Journal of Inequalities and Applications , 2010,
Abstract: The purpose of this paper is to prove a strong convergence theorem for a finite family of uniformly -Lipschitzian mappings in Banach spaces. The results presented in the paper improve and extend the corresponding results announced by Chang (2001), Cho et al. (2005), Ofoedu (2006), Schu (1991) and Zeng (2003 and 2005), and many others.
Common Fixed Point Theorems for a Class of Twice Power Type Contraction Maps in G-Metric Spaces
Hongqing Ye,Feng Gu
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/736214
Abstract: We introduce a new twice power type contractive condition for three mappings in G-metric spaces, and several new common fixed point theorems are established in complete G-metric space. An example is provided to support our result. The results obtained in this paper differ from other comparable results already known.
Common Fixed Point Theorems of Altman Integral Type Mappings in -Metric Spaces
Feng Gu,Hongqing Ye
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/630457
Abstract: We introduce the concept of -weakly commuting self-mapping pairs in -metric space. Using this concept, we establish a new common fixed point theorem of Altman integral type for six self-mappings in the framework of complete -metric space. An example is provided to support our result. The results obtained in this paper differ from the recent relative results in the literature.
CONVERGENCE OF IMPLICIT ITERATIVE PROCESS WITH ERRORS FOR A FINITE FAMILY OF ASYMPTOTICALLY NONEXPANSIVE MAPPINGS
Gu Feng,
谷峰

数学物理学报(A辑) , 2006,
Abstract: The purpose of this article is to study the weak and strong convergence of implicit iteration process with errors to a common fixed point for a finite family of asymptotically nonexpansive mappings and nonexpansive mappings in Banach spaces. The results presented in this article extend and improve thecorresponding results of 1, 2, 4-9, 11-15].
On the Ishikawa Iterative Approximation with Mixed Errors for Solutions to Variational Inclusions with Strongly Accretive Type Mappings in Banach Spaces
Banach空间中强增生型变分包含解的具混合误差项的Ishikawa迭代逼近

GU Feng,
谷峰

数学物理学报(A辑) , 2005,
Abstract: The purpose of this paper is to investigate the existence of solutions and convergence of Ishikawa iterative process with mixed errors for a class of variational inclusions with strongly accretive type mappings in real reflexive Banach spaces. The results presented in this paper extend and improve the corresponding results of Chang and Zeng.
Some Strong Convergence Theorems for Ishikawa Iterative Sequence of Certain Nonlinear Operators
一类非线性算子Ishikawa迭代序列的强收敛定理

GU Feng,
谷峰

数学物理学报(A辑) , 2001,
Abstract: In this artice, by virtue of some analysis techniques, we have studied approxi-mation problem of Ishikawa iterative sequence for the solution of -strongly accretive op-erators and the fixed poini.of -strongly pseudo-contractive operators in uniformly smooth Banach spaces. Our results improve and extend the recent corresponding results.
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