Zhi-Feng Dai

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Authenticity of pulmonary Lophomonas blattarum infection: A case report.

Shuang-Shuang Meng, Xu-Hong Lin et 6 al.

Jan 6, 2019 in World journal of clinical cases
Pulmonary protozoal infections are rare. A 28-year-old woman was admitted to hospital with chief complains of cough, sputum, and dyspnea. The clinical laboratory tests for blood revealed an increased eosinophil percentage of 31.3% and significantly elevated total IgE. The chest computed tomography scan revealed that bilateral bronchial walls were thickening, accompanied with patchy spots scattered...

Changes in the Microbiota and their Roles in Patients with Type 2 Diabetes Mellitus.

Qiao-Ling He, Xu-Hong Lin et 9 al.

Mar 9, 2023 in Current microbiology
An association between type 2 diabetes mellitus (T2DM) and gut microbiota is well established, but the results of related studies are inconsistent. The purpose of this investigation is to elucidate the characteristics of the gut microbiota in T2DM and non-diabetic subjects. Forty-five subjects were recruited for this study, including 29 T2DM patients and 16 non-diabetic subjects. Biochemical param...

Some new three-term Hestenes–Stiefel conjugate gradient methods with affine combination

Xiao-Liang Dong, Zhi-Feng Dai et 4 al.

Feb 23, 2017 in Optimization
In this paper, a modified Hestenes–Stiefel conjugate gradient method for unconstrained problems is developed, which can achieves the twin goals of generating sufficient descent direction at each iteration as well as being close to the Newton direction. In our methods, the hybridization parameter can also be obtained based on other kinds of conjugacy conditions. Under mild condition, we establish t...


An Adaptive Three-Term Conjugate Gradient Method with Sufficient Descent Condition and Conjugacy Condition

Xiao-Liang Dong, Xiang-Li Li et 3 al.

Jul 12, 2019 in Journal of the Operations Research Society of China
In this paper, an adaptive three-term conjugate gradient method is proposed for solving unconstrained problems, which generates sufficient descent directions at each iteration. Different from the existent methods, a dynamical adjustment between Hestenes–Stiefel and Dai–Liao conjugacy conditions in our proposed method is developed. Under mild condition, we show that the proposed method converges gl...

Authenticity of pulmonary Lophomonas blattarum infection: A case report

Shuang-Shuang Meng, Xu-Hong Lin et 6 al.

Jan 6, 2019 in World Journal of Clinical Cases

Two modified HS type conjugate gradient methods for unconstrained optimization problems

Zhi-Feng Dai

Feb 1, 2011 in Nonlinear Analysis: Theory, Methods & Applications