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唐山学院学报 2009年第5期22卷 105-108页

作者：路仙伟贾国安唐山学院外语系河北唐山063000

结合当前高校教育现状,介绍了教师发展的相关理论,论述了教师发展的内涵和意义,并提出教师发展的条件。

关键词：高等学校教师发展内涵意义条件

Markov Jump Processes in Estimating Sharing of Identity by Descent

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Acta Mathematicae Applicatae Sinica 2021年第1期37卷 183-191页

作者： xian CHEN wei guo Xu-min NI School of Mathematical Sciences Xiamen UniversityXiamen 361005China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China Department of Mathematics Beijing Jiaotong UniversityBeijing 100044China

Identity by descent(IBD)sharing is a very important genomic feature in population genetics which can be used to reconstruct recent demographic *** this paper we provide a framework to estimate IBD sharing for a demographic model called two-population model with *** adopt the structured coalescent theory and use a continuous-time Markov jump process{X(t),t≥0}to describe the genealogical process in such *** we apply Kolmogorov backward equation to calculate the distribution of coalescence time and develop a formula for estimating the IBD *** simulation studies show that our method to estimate IBD sharing for this demographic model is robust and accurate.

关键词： IBD sharing structured coalescent theory Markov jump process Kolmogorov backward equation

Dynamical output feedback stabilization for neutral systems with mixed delays

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第8期9卷 1043-1049页

作者： wei QIAN guo-jiang SHEN You-xian SUN State Key Lab of Industrtal Control Technology Zhejiang University Hangzhou 310027 China Department of Computer Science and Technology Henan Polytechnic University Jiaozuo 454000 China

This paper is concerned with the issue of stabilization for the linear neutral systems with mixed delays. The attention is focused on the design of output feedback controllers which guarantee the asymptotical stability of the closed-loop systems. Based on the model transformation of neutral type, the Lyapunov-Krasovskii functional method is employed to establish the delay-dependent stability criterion. Then, through the controller parameterization and some matrix transformation techniques, the desired parameters are determined under the delay-dependent design condition in terms of linear matrix inequalities (LMIs), and the desired controller is explicitly formulated. A numerical example is given to illustrate the effectiveness of the proposed method.

关键词： Neutral systems Mixed delays Output feedback stabilization Linear matrix inequality (LMI)

域外护理-法律跨专业整合的实践进展与借鉴——以美国、英国和澳大利亚实践为例

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护理学报 2023年第19期30卷 68-73页

作者：何文凤鲜国炜马勇张晓林张晶马春晓潍坊医学院管理学院山东潍坊261053

目的探讨美国、英国和澳大利亚的护理-法律跨专业整合实践模式,为我国构建护理-法律跨专业整合实践模式提供借鉴。方法以美国、英国和澳大利亚的护理-法律跨专业整合实践模式为研究对象,检索有关文献,总结域外护理-法律跨专业整合实践... 详细信息

目的探讨美国、英国和澳大利亚的护理-法律跨专业整合实践模式,为我国构建护理-法律跨专业整合实践模式提供借鉴。方法以美国、英国和澳大利亚的护理-法律跨专业整合实践模式为研究对象,检索有关文献,总结域外护理-法律跨专业整合实践模式的运行模式及效果,并基于我国国情,提出我国构建护理-法律跨专业整合实践模式的建议。结果护理-法律跨专业整合实践模式将护理服务和法律服务整合起来,在降低医疗成本、健康促进、提升护理职业的政策影响力等方面发挥了重要作用。结论我国在建立护理-法律跨专业整合实践模式时,需从建立护理-法律职业共同体、设置跨专业协作指南等方面入手,构建富有中国特色的护理-法律跨专业整合机制。

关键词：跨学科整合跨专业整合护理-法律伙伴关系健康社会决定因素

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对传统评课内容的反思

西南交通大学学报（社会科学版） 2005年第5期6卷 67-70页

作者：欧本谷韦先国欧本双西南师范大学教育管理学院重庆市400715 宣汉县马渡乡初级中学四川宣汉636100 宣汉县土主乡中心学校四川宣汉636100

传统的评课内容主要是基于对课堂教学结构的分析,围绕着教学目的、教学内容、教学方法、教学效果、教师素养等课堂教学要素的评价来构建的。它体现的是以教师为中心,以学科知识为中心,看重的是教师课堂教学中的活劳动投入。随着素质教... 详细信息

传统的评课内容主要是基于对课堂教学结构的分析,围绕着教学目的、教学内容、教学方法、教学效果、教师素养等课堂教学要素的评价来构建的。它体现的是以教师为中心,以学科知识为中心,看重的是教师课堂教学中的活劳动投入。随着素质教育的深入和“一切为了学生的发展”教学理念的贯彻,评课内容必须着眼于课堂教学的整体最优,必须关注学生课堂学习的表现及其效果,必须重视现代化教学手段在课堂教学中的运用,必须兼顾不同类型、不同形式的课堂教学评价的特殊要求。

关键词：课堂教学评价标准

Nanomedicine Disrupts Stromal Barriers to Augment Drug Penetration for Improved Cancer Therapy

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Chinese Journal of Chemistry 2024年第10期42卷 1175-1189页

作者： guo-Feng Luo wei-Hai Chen xian-Zheng Zhang state Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration Key Laboratory of Oral Biomedicine Ministry of EducationHubei KeyLaboratory of StomatologySchool&Hospital of StomatologyWuhan UniversityWuhanHubei 430079China Key Laboratoryof Biomedical Polymers of Ministry of Education&Departmentof Chemistry Wuhan UniversityWuhanHubei 430072China

Tumor stroma composing diverse extracellular matrixes(ECM)and stromal cells shapes a condensed physical barrier,which severely hampers the efficient accessibility of nanomedicine to tumor cells,especially these deep-seated in the core of *** barrier significantly compromises the antitumor effects of drug-loaded nanomedicine,revealing the remarkable importance of disrupting stromal barrier for improved tumor therapy with deep penetration *** achieve this goal,various nanoparticle-based strategies have been developed,including direct depleting ECM components via delivering anti-fibrotic agents or targeting stromal cells to suppress ECM expression,dynamic regulation of nanoparticles’physicochemical properties(i.e.,size,surface charge,and morphology),mechanical force-driven deep penetration,natural/biomimetic self-driven nanomedicine,and transcytosis-inducing *** these nanostrategies were systemically summarized in this review,and the design principles for obtaining admirable nanomedicine were *** the rapid development of nanotechnology,elaborate design of multifunctional nanomedicine provides new opportunities for overcoming the critical stromal barriers to maximize the therapeutic index of various therapies,such as chemotherapy,photodynamic therapy,and immunotherapy.

关键词： Nanomedicine Tumor stroma Deep penetration Enhanced drug perfusion Cancer therapy Drug carriers Biomaterials Nanotechnology

Hybrid vibration isolation optimization of a flexible manipulator based on neural network agent model

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Chinese Journal of Aeronautics 2024年第5期37卷 482-505页

作者： Yongxin ZHANG Liang LI Dingguo ZHANG wei-Hsin LIAO xian guo School of Science Nanjing University of Science and TechnologyNanjing 210094China Department of Mechanical and Automation Engineering The Chinese University of Hong KongHong KongChina

Segmented Active Constrained Layer Damping(SACLD)is an intelligent vibration-damping structure,which could be applied to the sectors of aviation,aerospace,and transportation engineering to reduce the vibration of flexible ***,machine learning technology is widely used in the engineering field because of its efficient multi-objective *** dynamic simulation of a rotational segmental flexible manipulator system is presented,in which enhanced active constrained layer damping is carried out,and the neural network model of Genetic Algorithm-Back Propagation(GA-BP)algorithm is *** suppression and structural optimization of the SACLD manipulator model are studied based on vibration mode and damping *** modal responses of the SACLD manipulator model at rest and rotation are *** addition,the four model indices are optimized using the GA-BP neural network:axial incision size,axial incision position,circumferential incision size,and circumferential incision ***,the best model for vibration suppression is obtained.

关键词： Machine learning Vibration suppression Flexible manipulator Segmented active constrained layer damping Structural optimization

A novel active-passive protection strategy endows carbonyl iron with excellent intelligent anti-corrosion and microwave absorption dual functional characteristics

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Nano Research 2025年第1期18卷 487-500页

作者： wei Tian Quanyuan Feng Linbo Zhang Yinfan Liu xian Jian Longjiang Deng Institute of Microelectronics School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China National Engineering Researching Centre of Electromagnetic Radiation Control Materials Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of EducationState Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China The Yangtze Delta Region Institute(Huzhou)&School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhou 313001China

Carbonyl iron absorbers(CI)face significant challenges in practical applications,such as corrosion,interface bonding failure,detachment,and high maintenance ***,we have developed intelligent self-healing technology based on proactive/passive mechanisms via in situ synthesis of self-healing factors(polydopamine/benzotriazole(PDA/BTA))and physical barrier layers(SiO_(2)/1,1,1,3,3,3-hexamethyl disilazane,SiO_(2)/HMDS)to enhance corrosion resistance,while also being compatible with efficient microwave absorption *** unique multiscale structure gives full play to the utilization of the roles of each functional layer,including the intelligent self-healing features of PDA/BTA,physical shielding and spatial confinement characteristics of SiO_(2)/HMDS,and magnetic-dielectric synergistic mechanism resulted from the good impedance matching characteristics,the conduction loss,the interfacial polarization loss and natural *** asfabricated composites achieved an exceptional minimum reflection loss value of-55.4 dB at 10.7 GHz and the effective absorption band of 7.6 ***,it still exhibits obvious self-healing and corrosion resistance characteristics after 360 h corrosion treatment,ascribed to the self-healing mechanism of PDA/BTA and the blocking intervention effect of SiO_(2)/*** work is considered to pave the way for the synthesis of high-performance magnetic absorbers,especially in enhancing their intelligent self-healing ability in corrosive environments.

关键词： microwave absorption intelligent self-healing technology carbonyl iron multiscale structure magneticdielectric synergistic mechanism

Influence of social capital on the livelihood strategies of farmers under China's rural revitalization strategy in poor mountain areas: A case study of the Liangshan Yi autonomous prefecture

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Journal of Mountain Science 2022年第4期19卷 958-973页

作者： HE Ren-wei guo Shi-li DENG xian ZHOU Kui Institute of City Situation Survey Research Beijing Academy of Social SciencesBeijing 100101China School of Resources and Environment Xichang CollegeXichang 615013China China Western Economic Research Center Southwestern University of Finance and EconomicsChengdu 611130China Office Service Center of Standing Committee of Neijiang Municipal People’s Congress Neijing 641000China

Social capital in the form of social resources or social networks is one of the most important livelihood capital of farmers, which can increase the labor productivity of poor households and increase income. It is important to explore the reasons underlying the livelihood strategy choices of farmers from the perspective of social capital under China’s rural revitalization strategy. In this study, the Liangshan Yi Autonomous Prefecture, a povertystricken mountainous area in southwestern China, was selected as the case study area, and multivariable linear regression models were constructed to analyze the influence of social capital on livelihood *** results are as follows:(1) Individual social capital had a positive effect on non-agricultural livelihood strategies. On average, with a one-unit increase in individual social capital, the ratio of farmers’ nonagricultural income to total productive income(Income_Rto) increased by 0.002% and 0.062%,respectively. Collective social capital, with the Peasant Economic Cooperation Organization(PECO) as the carrier, had a negative effect on the non-agricultural livelihood strategies of farmers;on average, with a oneunit increase in PECO, Income_Rto decreased by approximately 0.053%. However, this effect was only significant in the river valley area.(2) The income differences among the different livelihood strategy types were explained by the livelihood strategy choices of farmers. As non-agricultural work can bring more benefits, the labor force exhibited one-way migration from villages to cities, resulting in a lack of the subject of rural revitalization. It is necessary to implement effective measures to highlight the role of PECO in increasing agricultural income for farmers. Finally,based on the above conclusions,policy recommendations with respect to livelihood transformation of farmers and rural sustainable development are discussed.

关键词： Social capital Livelihood strategies Village types Rural revitalization Poor mountain areas Liangshan Yi Autonomous Prefecture

Large-scale synthesis of fluorine-free carbonyl iron-organic silicon hydrophobic absorbers with long term corrosion protection property

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Nano Research 2022年第10期15卷 9479-9491页

作者： wei Tian Jinyao Li Yifan Liu Longjiang Deng Yang guo xian Jian National Engineering Researching Centre of Electromagnetic Radiation Control Materials Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of EducationState Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China The Yangtze Delta Region Institute(Huzhou)&School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhou 313001China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China School of Electrical and Information Engineering Panzhihua UniversityPanzhihua 617000China

Environmentally-friendly magnetic metallic absorbers with high-performing antioxidant property,thermal stability,and anticorrosion capability have attracted great attention in real-world applications.A surface modification technology of magnetic metallic absorbers with dense and inert materials has been an effective strategy to solve the aforesaid ***,fluorinefree core–shell carbonyl iron-organic silicon absorbers(CI@SiO_(2)/1,1,1,3,3,3-hexamethyl disilazane(HMDS))were fabricated via a facile one-pot synthesis using tetraethyl orthosilicate(TEOS)and HMDS as the precursor of protective layer(SiO_(2)/HMDS),and CI@SiO_(2)/HMDS hybrid reveals its long-term corrosion resistance and excellent microwave absorption performance with a minimum reflection loss value of−44.3 dB and an effective absorption bandwidth of 5.3 GHz at a thin thickness of 2.0 mm after immersion in 5.0 wt.%NaCl acidic solutions for 2,160 ***,CI@SiO_(2)/HMDS hybrid can still achieve the maximum radar cross-sectional(RCS)reduction values about 16.5 dB·m^(2) at the detectionθof 0°.The exceptional microwave absorption performance and structural stability are largely due to the extraordinary wave-transparent property and shielding ability against corrosive medium of SiO_(2)/HMDS hydrophobic protective layer with a contact angle of 132.5°.The research paves the way for the large-scale and batch production of high-performance magnetic metallic absorbers and increases their survivability and reliability in the harsh environments.

关键词： microwave absorption long-term corrosion resistance carbonyl iron(CI)@SiO_(2)/1 1 1 3 3 3-hexamethyl disilazane(HMDS)hybrid core-shell radar cross-sectional simulation