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Impurity effects of theΛhyperon in the hypernuclear systems^(25)ΛMg and(29)ΛSi

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Communications in Theoretical Physics 2021年第11期73卷 116-121页

作者： Ji-Wei Cui xian-rong Zhou School of Physics and Optoelectronic Engineering Xidian UniversityXi'an 710071China Department of Physics East China Normal UniversityShanghai 200241China

Based on the beyond-mean-field Skyrme-Hartree-Fock model,impurity effects of theΛhyperon in the hypernuclear systems^(25)ΛMg and^(29)ΛSi are investigated,*** cases,in which theΛhyperon occupies the single-particle orbitals L[000]1+/2,L[110]1-/2,L[101]3-/2 and L[101]1-/2,are *** each case,the potential energy surface and the energy curves projected on certain angular momenta are employed to show the influence of theΛhyperon on the nuclear *** the shrinkage effect that is induced by theΛhyperon occupying the sΛorbital,it is found that theΛhyperon on the pΛorbital,L[110]1-/2,drives the nuclear core toward a prolate shape,while the ones on the other two pΛorbitals,L[101]3-/2 and L[101]1-/2,drive the nuclear core toward an oblate *** energy spectra and the corresponding intra-band E2 transition rates for the rotational bands are given as a prediction for future experiments.

关键词： Λhypernuclei Skyrme-Hartree-Fock model angular momentum projection generator coordinate method

Dynamic p-y curves for vertical and batter pile groups in liquefied sand

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Earthquake Engineering and Engineering Vibration 2022年第3期21卷 605-616页

作者： Zhang Jian Li Yurun rong xian Liang Yan School of Civil and Transportation Engineering Hebei University of TechnologyTianjin 300401China Campus Construction and Management Hebei University of TechnologyTianjin 300401China

In this study,centrifuge model tests of vertical and batter pile groups in liquefied sand were conducted on a centrifuge shaking *** dynamic p-y curves for these pile groups before and during sand liquefaction were obtained from calculations based on test *** results confirm that liquefaction contributes to a reduction in the energy consumption of pile foundations,with the degradation effect being more pronounced for batter pile *** shallow depths,the difference in the backbone gradients of the p-y curves after liquefaction for vertical and batter pile groups indicates that the lateral stiffness of a batter pile group is greater than that of a vertical pile *** shaking intensity increases,the lateral stiffness of a vertical pile group increases with depth during the late stage of sand ***,the lateral stiffness of a batter pile group during liquefaction does not vary with *** results of this study provide a reference for the seismic design of vertical and batter pile groups in liquefied soil.

关键词： soil liquefaction pile-soil interaction p-y curve centrifuge shaking table

Minimax designs for linear regression models with bias in a reproducing kernel Hilbert space in a discrete set

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Applied Mathematics(A Journal of Chinese Universities) 2015年第3期30卷 361-378页

作者： ZHOU Xiao-dong YUE rong-xian International Business and Information School Shanghai University of International Business and Economics Department of Mathematics Shanghai Normal University Scientific Computing Key Laboratory of Shanghai Universities and Division of Scientific Computation of E-Institute of Shanghai Universities

Consider the design problem for estimation and extrapolation in approximately linear regression models with possible misspecification. The design space is a discrete set consisting of finitely many points, and the model bias comes from a reproducing kernel Hilbert space. Two different design criteria are proposed by applying the minimax approach for estimating the parameters of the regression response and extrapolating the regression response to points outside of the design space. A simulated annealing algorithm is applied to construct the minimax designs. These minimax designs are compared with the classical D-optimal designs and all-bias extrapolation designs. Numerical results indicate that the simulated annealing algorithm is feasible and the minimax designs are robust against bias caused by model misspecification.

关键词： 62K05 62K25 62J05 minimax design reproducing kernel Hilbert space discrete design space simulated annealing algorithm

Robust designs for models with possible bias and correlated errors

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Applied Mathematics(A Journal of Chinese Universities) 2010年第3期25卷 307-317页

作者： ZHOU Xiao-dong YUE rong-xian Department of Mathematics Shanghai Normal University Shanghai 200234 China Business Information Management School Shanghai Institute of Foreign Trade Shanghai 201620 China.

This paper studies the model-robust design problem for general models with an unknown bias or contamination and the correlated errors. The true response function is assumed to be from a reproducing kernel Hilbert space and the errors are fitted by the qth order moving average process MA（q）, especially the MA（1） errors and the MA（2） errors. In both situations, design criteria are derived in terms of the average expected quadratic loss for the least squares estimation by using a minimax method. A case is studied and the orthogonality of the criteria is proved for this special response. The robustness of the design criteria is discussed through several numerical examples.

关键词： Robust design reproducing kernel Hilbert space moving average process Hermite polynomial.

D-optimal Designs for Multiresponse Linear Models with a Qualitative Factor Under General Covariance Structure

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Acta Mathematicae Applicatae Sinica 2023年第4期39卷 878-885页

作者： rong-xian YUE Xin LIU Kashinath CHATTERJEE College of Mathematics and Science Shanghai Normal UniversityShanghai 200234China College of Science Donghua UniversityShanghai 201620China Department of Statistics Visva-Bharati UniversitySantiniketanIndia

This paper considers a linear regression model involving both quantitative and qualitative factors and an m-dimensional response variable y. The main purpose of this paper is to investigate D-optimal designs when the levels of the qualitative factors interact with the levels of the quantitative factors. Under a general covariance structure of the response vector y, here we establish that the determinant of the information matrix of a product design can be separated into two parts corresponding to the two marginal designs. Moreover, it is also proved that D-optimal designs do not depend on the covariance structure if we assume hierarchically ordered system of regression models.

关键词： D-optimal designs Multiresponse linear models Qualitative factors

Characteristics of gut microbiota dysbiosis in patients with colorectal polyps

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 13-21页

作者： xian-rong Wu Xiao-Hong He Yong-Fang Xie School of Life Health Information Science and Engineering Chongqing Post and Communications UniversityChongqing 400065China

This editorial,inspired by a recent study published in the World Journal of Gastrointestinal Oncology,covers the research findings on microbiota changes in various *** recurrent colorectal polyps,the abundances of Klebsiella,Parvimonas,and Clostridium increase,while those of Bifidobacterium and Lactoba-cillus *** dysbiosis may promote the formation and recurrence of *** microbial changes have also been observed in colorectal cancer,inflammatory bowel disease,autism spectrum disorder,and metabolic syndrome,indicating the role of increased pathogens and decreased probiotics in these *** the gut microbiota,particularly by increasing probiotic levels,may help prevent polyp recurrence and promote gut *** microbial intervention strategy holds promise as an adjunctive treatment for patients with colorectal polyps.

关键词： Recurrent colorectal polyps Gut microbiota dysbiosis Klebsiella Probiotics Intestinal inflammation Microbial intervention strategy

^(174)Hf and^(174)Yb by the Projected Shell Model with Improved 4-quasiparticle basis

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Chinese Physics Letters 2011年第4期28卷 71-74页

作者： CHEN Fang-Qi ZHOU xian-rong Department of Physics and Institute of Theoretical Physics and Astrophysics Xiamen UniversityXiamen 361005

The rare-earth nuclei^(174)Hf and^(174)are studied in the framework of the projected shell *** calculations are carried out with an improved version of code which contains all types of four-quasiparticle basis in the configuration *** the yrast band and the multi-quasiparticle excited bands can be well *** with the experimental data,our calculations improve the previous resulst,especially for high spin *** improvement suggests that the newly added configurations are ***^(174)Yb,a new possible configuration is suggested for the observed K^(л)=14^(+)band,and the decay of the K^(л)=6^(+)isomeric state to the yrast band is discussed.

关键词： space quasi particle

Locally R-optimal designs for a class of nonlinear multiple regression models

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Statistical Theory and Related Fields 2023年第2期7卷 107-120页

作者： Lei He rong-xian Yue Department of Stistis Anhui Normal UniversityWuhuPeople's Republic of China Department of Mathematis Shanghai Normal UniversityShanghaiPeople's Republic of China

This paper concerns with optimal designs for a wide class of nonlinear models with informa-tion driven by the linear *** aim of this study is to generate an R-optimal design which minimizes the product of the main diagonal entries of the inverse of the Fisher informa tion matrix at certain values of the *** equivalence theorem for the locally R optimal designs is provided in terms of the intensity *** solutions for the locally saturated R-optimal designs are derived for the models having linear predictors with and without intercept,*** particle swarm optimization method has been employed to generate locally non-saturated R-optimal *** examples are presented for ilustration of the locally R-optimal designs for Poisson regression models and proportional hazards regression models.

关键词： Poisson regression models proportional hazards models R-optimality particle swarm optimization

Hepatocytes targeting of cationic liposomes modified with soybean sterylglucoside and polyethylene glycol

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World Journal of Gastroenterology 2005年第32期11卷 4947-4952页

作者： xian-rong Qi Wen-Wei Yan Jing Shi Department of Pharmaceutics School of Pharmaceutical Sciences Peking University Beijing 100083 China

AIM： In this study, a hepatocyte-specific targeting technology was developed by modifying cationic liposomes with soybean sterylglucoside （SG） and polyethylene glycol （PEG）（C/SG/ PEG-liposomes）. METHODS： The liposomal transfection efficiencies in HepG2 2.2.15 cells were estimated with the use of fluorescein sodium （FS） as a model drug, by flow cytometry. The antisense activity of C/SG/PEG-liposomes entrapped antisense oligonucleotides （ODN） was determined as HBsAg and HBeAg in HepG2 2.2.15 cells by ELISA. The liposome uptake by liver and liver cells in mice was carried out after intravenous injection of 3H-labeled liposomes. RESULTS： C/SG-liposomes entrapped FS were effectively transfected into HepG2 2.2.15 cells in vitro. C/SG/PEG-Iiposomes entrapped ODN, reduced the secretion of both HBsAg and HBeAg in HepG2 2.2.15 cells when compared to free ODN. After in vivo injection of ^3H-labeled C/SG/PEG-liposomes, higher radiation accumulation was observed in the hepatocytes than non-parenchymal cells of the liver. CONCLUSION： C/SG/PEG-liposomes mediated gene transfer to the liver is an effective gene-delivery method for hepatocytes-specific targeting, which appears to have a potential for gene therapy of HBV infections.

关键词： Hepatocytes targeting Cationic liposomes Soybean sterylglucoside