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Study on relationships of electromagnetic band gap structures and left/right handed structures

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Science in China(Series F) 2007年第2期50卷 251-260页

作者： GAO Chu CHEN ZhiNing wang yunyi YANG Ning State Key Lab of Millimeter Waves Southeast University Nanjing 210096 China Institute for I nfocomm Research Science Park 117674 Singapore Motorola Electronics Co. Ltd 569088 Singapore

Two types of dual periodic circuits are introduced. The distributions of passbands and stopbands are generated from their dispersion relationships. Based on the study, Brillouin diagrams of three representative special cases are drawn; S parameters of these three cases are simulated by Aglient ADS; the S parameters of one of the three cases are verified by an experiment. The phase characteristics are compared with those generated from the dispersion relationship. The theoretical analysis and the experimental verification show that both types of the periodic structures can behave as electromagnetic band gap （EBG） structures, right-handed structures （RHS）, and left-handed structures （LHS）, when they operate at different frequency ranges. Thus, the possibility of a physical structure showing these three different characteristics at different frequency ranges is proven.

关键词： electromagnetic band gap structure right-handed structure left-handed structure Brillouin diagram

Computer-Based Estimation of Spine Loading during Self-Contained Breathing Apparatus Carriage

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Journal of Donghua University(English Edition) 2022年第4期39卷 373-378页

作者： wang Shitan wang yunyi College of Fashion and Design Donghua UniversityShanghai 200051China

Firefighters’low back disorders(LBDs)are closely related to excessive spine loading when using the self-contained breathing apparatus(SCBA)*** purpose of this study was to quantify firefighters’spine loading and evaluate the effects of strap lengths of SCBA on altering spine ***-based musculoskeletal models of three varying-strapped SCBA conditions and a control condition(CC)with no SCBA equipped were *** model was driven using three-dimensional(3 D)inertial motion capture data from twelve male subjects performing a walking task and the predicted ground reaction force(GRF).Electromyography(EMG)activities were also recorded to validate the results from the *** 4 th-5 th lumbar vertebra(L4/L5)joint reaction forces,as well as erector spinae and rectus abdominis forces,were finally *** demonstrated that carrying SCBA significantly increased the compressive force and anteroposterior shear force at the *** risk of potential LBDs increased by about 17.77%.Dynamic balance of erector spinae and rectus abdominis contraction was also disturbed when carrying SCBA,indicating a higher risk of spine muscle *** of SCBA strap length was an efficient method to influence spine *** medium-fitting strap(MS)with a length of around 101 cm generated minimum joint reaction forces and achieved the optimum dynamic balance of spine muscle contraction,which was recommended for firefighters.

关键词： firefighter self-contained breathing apparatus(SCBA) low back disorder(LBD) musculoskeletal model

Stability and variability of molecular subtypes:comparative analysis of primary and metastatic triple-negative breast cancer

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Cancer Biology & Medicine 2024年第9期21卷 784-798页

作者： Xiuzhi Zhu Xiaohan Ying Yin Liu yunyi wang Li Chen Zhiming Shao Xi Jin Yizhou Jiang Zhonghua wang Key Laboratory of Breast Cancer in Shanghai Shanghai Institute of Infectious Disease and BiosecurityDepartment of OncologyShanghai Medical CollegeFudan UniversityShanghai 200000China Department of Breast Surgery Fudan University Shanghai Cancer CenterShanghai 200000China

Objective:Triple-negative breast cancer(TNBC)is a heterogeneous and aggressive *** our previous study classified primary TNBC into four subtypes,comprehensive longitudinal investigations are ***:We assembled a large-scale,real-world cohort comprised of 880 TNBC patients[465 early-stage TNBC(eTNBC)and 415 metastatic TNBC(mTNBC)patients]who were treated at Fudan University Shanghai Cancer *** longitudinal dynamics of TNBC subtypes during disease progression were elucidated in this patient *** analysis was performed to compare primary and metastatic lesions within specific TNBC ***:The recurrence and metastasis rates within 3 years after initial diagnosis in the eTNBC cohort were 10.1%(47/465).The median overall survival(OS)in the mTNBC cohort was 27.2 months[95%confidence interval(CI),24.4–30.2 months],which indicated a poor *** prognostic significance of the original molecular subtypes in both eTNBC and mTNBC patients was *** molecular subtypes were maintained in 77.5%of the patients throughout disease progression with the mesenchymal-like(MES)subtype demonstrating a tendency for subtype transition and brain ***,a precision treatment strategy based on the metastatic MES subtype of target lesions resulted in improved progression-free survival in the FUTURE ***:Our longitudinal study comprehensively revealed the clinical characteristics and survival of patients with the original TNBC subtypes and validated the consistency of most molecular subtypes throughout disease ***,we emphasize the major importance of repeat pathologic confirmation of the MES subtype.

关键词： Triple-negative breast cancer molecular subtype metastasis primary tumor overall survival

Tractor path tracking control based on binocular vision

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Information Processing in Agriculture 2018年第4期5卷 422-432页

作者： Shuo Zhang yunyi wang Zhongxiang Zhu Zhen Li Yuefeng Du Enrong Mao College of Engineering China Agricultural UniversityBeijing 100083China Laboratory of Optimized Design for Modern Agricultural Equipment China Agricultural UniversityBeijing 100083China

In the process of field operation management,determining how to accurately realize crop row identification and path tracking control is an essential part of tractor automatic *** to the linear operation in the process of cotton field management,the tractor path tracking control system was designed based on binocular vision and the pure pursuit model.A new crop row detection method based on the Census transform and the PID control algorithm with dead zone were ***,the upper computer software was developed by C++with the functions of parameter setting and image acquisition and ***,an automatic steering controller was developed based on microprocessor MC9S12XS128 of *** control program was developed based on modular design using CodeWarrior during development of the PID-based automatic steering control ***,a field experiment platform of tractor path tracking control was built,and field experiments under the actual cotton were *** optimal visibility distance was determined by several previous *** the tractor tracks the path with the optimal visibility distance in the growth environment of actual cotton crops,the mean absolute deviation of course angle was 0.95°,and the standard deviation was 1.26°;the mean absolute deviation of lateral position was 4.00 cm,and the standard deviation was 4.97 cm;the mean absolute deviation of front wheel angle was 2.99°,and the standard deviation was 3.67°.The experimental results show that(1)the crop row detection method based on Census transform can identify the crop line and plan the navigation path well,and(2)the tractor path tracking control system based on binocular vision has good stability and high control precision;thus,the control systemcan realize the automatic path tracking control of cotton line operation and meets the agricultural requirements of cotton field operation management.

关键词： Binocular vision Census transform Pure pursuit model Path tracking Tractor

Path-tracking control based on a dynamic trigonometric function

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Information Processing in Agriculture 2019年第1期6卷 1-10页

作者： yunyi wang Shuo Zhang Zhongxiang Zhu Zhen Li Yuefeng Du Lizhi Fang Laboratory of Optimized Design for Modern Agricultural Equipment College of EngineeringChina Agricultural UniversityBeijing 100083China Huangshi Polytechnic College HubeiHuangshi 435003China

With the rapid development of the modern vehicle industry,the automated control of new vehicles is in increasing ***,traditional course control has been unable to meet the actual needs of such *** solve this problem,more precise pathtracking control technologies have attracted increased *** paper presents a new algorithm based on the latitude and longitude information,as well as a dynamic trigonometric function,to improve the accuracy of position ***,the algorithm takes the course deviation and adjustment time as the optimization objectives and the given path and speed as the *** controller continuously adjusts the output through a cyclic“adjustment and detection”***,through an integration of the steering,positioning,and speed control systems,an experimental platform of a path-tracking control system based on the National Instruments(NI)myRIO controller and LabVIEW was *** addition,path-tracking experiments were carried out along a linear path,while changing lanes,and on a curved *** comparing and analyzing the experimental results,it can be seen that the average deviation in lateral displacement along the linear and curved paths was 0.32 and0.8 cm,and the standard deviation of the lateral displacement was 2.65 and 2.39 cm,*** changing lanes,the total adjustment time for the vehicle close to the target line to reach stability was about 1.5 ***,the experimental results indicate that the new algorithm achieves good stability and high control accuracy,and can overcome directional and positional errors caused by road interference while driving,meeting the precision requirements of automated vehicle control.

关键词： Path-tracking control Trigonometric function NI myRIO controller LabVIEW

Polystyrene microplastics and di-2-ethylhexyl phthalate co-exposure: Implications for female reproductive health

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Environmental Science and Ecotechnology 2024年第6期22卷 276-285页

作者： Ke Xu yunyi wang Xiao Gao Zhaolan Wei Qi Han Shuxin wang Wanting Du Jian Wan Cuihong Wan Mingqing Chen School of Life Sciences Central China Normal UniversityWuhan430079HubeiChina

Microplastics and phthalates are prevalent and emerging pollutants that pose a potential impact on human *** studies suggest that both microplastics and phthalates can adversely affect the reproductive systems of humans and ***,the combined impact of these pollutants on the female reproductive system remains *** we show the impacts of exposure to polystyrene microplastics(PS-MPs)and di-2-ethylhexyl phthalate(DEHP)on female Sprague-Dawley rats’reproductive *** find that co-exposure to PS-MPs and DEHP results in a marked increase in cystic and atretic follicles,oxidative stress,fibrosis,and dysregulation of serum sex hormone homeostasis in the ovaries of the *** analysis identified differentially expressed proteins that were predominantly enriched in signaling pathways related to fatty acid metabolism and tight junctions,regulated by transforming growth factorβ1(TGF-β1).We further confirm that co-exposure to DEHP and PS-MPs activates the TGF-β1/Smad3 signaling pathway,and inhibiting this pathway alleviates oxidative stress,hormonal dysregulation,and ovarian *** results indicate that exposure to the combination of microplastics and phthalates leads to a significant increase in atretic follicles and may increase the risk of polycystic ovary syndrome(PCOS).Our study provides new insights into the reproductive toxicity effects of microplastics and DEHP exposure on female mammals,highlighting the potential link between environmental pollutants and the occurrence of *** findings highlight the need for comprehensive assessments of the reproductive health risks posed by microplastic pollution to women and contribute to the scientific basis for evaluating such risks.

关键词： Microplastics DEHP Reproductive toxicity PCOS TGF-β1/Smad3

Enhanced post-combustion CO2 capture and direct air capture by plasma surface functionalization of graphene adsorbent

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Journal of Energy Chemistry 2025年第1期100卷 653-664页

作者： Rahul Navik Eryu wang Xiao Ding Huang yunyi Yiyu Liu Jia Li Guangdong-Hong Kong Joint Laboratory for Carbon Neutrality Jiangmen Laboratory of Carbon and Science and Technology Guangzhou HKUST Fok Ying Tung Research Institute The Hong Kong University of Science and Technology (Guangzhou) Carbon Neutrality and Climate Change Thrust Society Hub The Hong Kong University of Science and Technology (Guangzhou) Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University

Graphene has enormous potential to capture CO2due to its unique properties and ***,graphene-based adsorbents have drawbacks of lower CO2adsorption capacity and poor *** work demonstrates a one-step rapid and sustainable N2/H2plasma treatment process to prepare graphene-based sorbent material with enhanced CO2adsorption *** treatment directly enriches amine species,increases surface area,and improves textural *** CO2adsorption capacity increases from 1.6 to 3.3 mmol/g for capturing flue gas,and from 0.14 to 1.3 mmol/g for direct air capture （DAC）.Importantly,the electrothermal property of the plasma-modified aerogels has been significantly improved,resulting in faster heating rates and significantly reducing energy consumption compared to conventional external heating for regeneration of *** aerogels display improved selectivity of 42 and 87 after plasma modification for 5 and 10 min,*** plasma-treated aerogels display minimal loss between 17%and 19% in capacity after 40 adsorption/desorption cycles,rendering excellent *** N2/H2plasma treatment of adsorbent materials would lower energy expenses and prevent negative effects on the global economy caused by climate change.

关键词： Carbon neutrality CO 2 capture Climate change Plasma treatment Graphene aerogel

ENTITY-ROLES MODEL AND OBJECT-ORIENTED KNOWLEDGE/DATA BASES

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Journal of Central South University 1994年第1期6卷 74-77页

作者： Pan Jiuhui Liu Zhimin wang yunyi(Department of Computer Science, Central South University of Technology, Changsha, 410083, China) Department of Computer Science Central South University of Technology Changsha China

A Model, called 'Entity-Roles' is proposed in this paper in which the world of Interest is viewed as some mathematical structure. With respect to this structure, a First order (three-valued) Logic Language is *** world to be modelled can be logically specified in this Language. The integrity constraints on the database and the deducing rules within the Database world are derived from the proper axioms of the world being modelled.

关键词： expert systems data model object-orientation database logic deductive query

机器学习建立的个体热舒适模型及其在服装领域的应用展望

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纺织学报 2023年第5期44卷 228-236页

作者：王中昱苏云王云仪东华大学服装与艺术设计学院上海200051 现代服装设计与技术教育部重点实验室(东华大学) 上海200051

为实现单独个体热舒适及需求的实时预测,推动智能服装对衣下微气候进行高效调控,在介绍机器学习算法建立的个体热舒适模型框架的基础上,从样本来源与样本量、输出特征与输出标签、机器学习算法、评估指标4个角度,回顾了模型搭建过程中... 详细信息

为实现单独个体热舒适及需求的实时预测,推动智能服装对衣下微气候进行高效调控,在介绍机器学习算法建立的个体热舒适模型框架的基础上,从样本来源与样本量、输出特征与输出标签、机器学习算法、评估指标4个角度,回顾了模型搭建过程中影响其预测能力的因素,指出该类模型优于传统热舒适模型,且具有用户个性化、输入参数多维化、预测动态化的特点。最后,提出可在个体热舒适模型的基础上配置可穿戴硬件及软件系统,以研发智能调温服装。未来的研究应根据应用环境选择样本数据、提取不同性质的参数构建模型、制定模型性能评估的规范、探索模型在智能调温服装领域的应用。

关键词：机器学习衣下微气候热舒适预测模型智能服装