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Self-Triggered Set Stabilization of Boolean Control Networks and Its Applications

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1631-1642页

作者： Rong Zhao Jun-e Feng dawei Zhang the School of Mathematics Shandong UniversityShandong UniversityJinan 250100China

Set stabilization is one of the essential problems in engineering systems, and self-triggered control(STC) can save the storage space for interactive information, and can be successfully applied in networked control systems with limited communication resources. In this study, the set stabilization problem and STC design of Boolean control networks are investigated via the semi-tensor product technique. On the one hand, the largest control invariant subset is calculated in terms of the strongly connected components of the state transition graph, by which a graph-theoretical condition for set stabilization is derived. On the other hand, a characteristic function is exploited to determine the triggering mechanism and feasible controls. Based on this, the minimum-time and minimum-triggering open-loop, state-feedback and output-feedback STCs for set stabilization are designed,respectively. As classic applications of self-triggered set stabilization, self-triggered synchronization, self-triggered output tracking and self-triggered output regulation are discussed as well. Additionally, several practical examples are given to illustrate the effectiveness of theoretical results.

关键词： Boolean control networks(BCNs) output regulation self-triggered control semi-tensor product of matrices set stabilization synchronization

NbN quantum dots anchored hollow carbon nanorods as efficient polysulfide immobilizer and lithium stabilizer for Li-S full batteries

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Journal of Energy Chemistry 2024年第1期88卷 260-271,I0007页

作者： Fei Ma Zhuo chen Katam Srinivas Ziheng Zhang Yu Wu dawei Liu Hesheng Yu Yue Wang Xinsheng Li Ming-qiang Zhu Qi Wu Yuanfu chen School of Integrated Circuit Science and Engineering and State Key Laboratory of Electronic Thin Films and Integrated DevicesUniversity of Electronic Science and TechnologyChengdu 610054SichuanChina College of Science and Institute of Oxygen Supply Center of Tibetan Studies(Everest Research Institute)Tibet UniversityLhasa 850000TibetChina College of Mechanical and Electronic Engineering Northwest A&F UniversityXianyang 712100ShaanxiChina

The shuttle effect of lithium polysulfides(LiPSs)and uncontrollable lithium dendrite growth seriously hinder the practical application of lithium-sulfur(Li-S)*** simultaneously address such issues,monodispersed Nb N quantum dots anchored on nitrogen-doped hollow carbon nanorods(NbN@NHCR)are elaborately developed as efficient Li PSs immobilizer and Li stabilizer for high-performance Li-S full *** functional theory(DFT)calculations and experimental characterizations demonstrate that the sulfiphilic and lithiophilic NbN@NHCR hybrid can not only efficiently immobilize the soluble Li PSs and facilitate diffusion-conversion kinetics for alleviating the shuttling effect,but also homogenize the distribution of Li+ions and regulate uniform Li deposition for suppressing Li-dendrite *** a result,the assembled Li-S full batteries(NbN@NHCR-S||Nb N@NHCR-Li)deliver excellent long-term cycling stability with a low decay rate of 0.031%per cycle over 1000 cycles at high rate of 2 *** at a high S loading of 5.8 mg cm^(-2)and a low electrolyte/sulfur ratio of 5.2μL mg^(-1),a large areal capacity of 6.2 mA h cm^(-2)can be achieved in Li-S pouch cell at 0.1 *** study provides a new perspective via designing a dual-functional sulfiphilic and lithiophilic hybrid to address serious issues of the shuttle effect of S cathode and dendrite growth of Li anode.

关键词： Dual-functional host NbN quantum dots Shuttle effect Dendrite-free Li anode Li-S full batteries

Traditional Culture Still Influences Chinese Women

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Women of China 1995年第5期 9-11页

作者： YAN WANYI and CAO dawei chen SHANSHAN

TRADITIONAL Chinese culture dates back to ancient times. But this culture is the outcome of a patriarchal agricultural society, and is most certainly stamped with the mark of feudalism. During a time when the state and the family had the same structure, women’s problems most typically reflected the characters of the patriarchal clan agricultural society and the traditional culture.

关键词： Traditional Culture Still Influences Chinese Women

Association of high-density lipoprotein cholesterol and wound healing in patients with diabetic foot ulcers

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Chinese Medical Journal 2022年第1期135卷 110-112页

作者： Lihong chen Wanxia Ma dawei chen Chun Wang Yun Gao Xingwu Ran Department of Endocrinology and Metabolism Diabetic Foot Care CenterWest China HospitalSichuan UniversityChengduSichuan 610041China

To the Editor:Diabetic foot ulcers(DFUs)are an important cause of morbidity in patients with diabetes mellitus(DM).The prevalence of foot ulcers in patients with diabetes is 4%to 10%,with the lifetime incidence estimated to be between 19%and 34%.[1]DFUs have become a considerable burden on patients and the healthcare service ***,the mechanism is not fully understood,and DFUs are still difficult to ***-density lipoproteins(HDL)are circulating particles composed of phospholipids,cholesterol,and *** attracted lots of attention mainly because of its protective effect against the development of ***,it has been shown that decreased HDL levels are correlated with an increased risk of DM and its *** association of HDL with DFUs has also received much *** levels of HDL cholesterol were associated with increased risk for foot ulceration in patients with diabetes(odds ratio 0.427,95%confidence interval[CI]0.228-0.799,P=0.008).[2]HDL cholesterol levels were also revealed to be an independent risk factor of lower-extremity amputation and wound-related death in patients with DFUs(hazard ratio[HR]0.30,95%CI 0.14-0.63,P=0.002).Therefore,there might be a potential correlation between HDL and wound healing.

关键词： wound healing patients

Direct observation of oxygen vacancy formation and migration over ceria surface by in situ environmental transmission electron microscopy

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Journal of Rare Earths 2024年第4期42卷 676-682页

作者： dawei Pang Wei Li Ningqiang Zhang Hong He Shengcheng Mao Yanhui chen Liwei Cao Chong Li Ang Li Xiaodong Han Beijing Key Laboratory of Solid Microstructure and Properties Department of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Beijing Key Laboratory for Green Catalysis and Separation The Faculty of Environment and LifeBeijing University of TechnologyBeijing10124China International Joint Research Laboratory for Quantum Functional Materials of Henan School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou450001China

The extremely high structural tolerance of ceria to oxygen vacancies(Ov)has made it a desirable catalytic material for the hydrocarbon oxidation to chemicals and pharmaceuticals and the reduction of gaseous *** is proposed that the formation and diffusion of Ov originate from its outstanding reduction ***,the formation and diffusion process of Ov over the surface of ceria at the atomic level is still ***,the structural and valence evolution of CeO_(2)(111)surfaces in reductive,oxidative and vacuum environments from room temperature up to 700℃was studied with in situ aberration-corrected environmental transmission electron microscopy(ETEM)*** is found to form under a high vacuum at elevated temperatures;however,the surface can recover to the initial state through the adsorption of oxygen atoms in an oxygen-contained ***,in hydrogen environment,the step-CeO_(2)(111)surface is not stable at elevated temperatures;thus,the steps tend to be eliminated with increasing *** with first-principles density function calculations(DFT),it is proposed that O-terminated surfaces would develop in a hypoxic environment due to the dynamic diffusion of Ov from the outer surface to the ***,in a reductive environment,H2 facilitates the formation and diffusion of Ov while Ce-terminated surfaces *** results reveal dynamic atomic-scale interplay between the nanoceria surface and gas,thereby providing fundamental insights into the Ov-dependent reaction of nano-CeO_(2) during catalytic processes.

关键词： Ceria Direct observation In situ ETEM Oxygen vacancy Density function calculations Rareearths

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宽弦风扇叶片造型对碰摩振动的影响规律

航空动力学报 2021年第12期36卷 2524-2536页

作者：陈大玮肖贾光毅陈勇上海交通大学机械与动力工程学院上海200240 上海交通大学燃气轮机与民用航空发动机教育部工程研究中心上海200240

基于造型叠加建立了参数化的宽弦风扇叶片模型,利用碰摩动力学研究了叶片造型对于机匣碰摩振动的影响规律。宽弦风扇叶片的复杂几何造型可能会增大碰摩的非线性程度,因此有必要研究叶片几何外型对于碰摩响应的影响。在圆柱坐标系下建立... 详细信息

基于造型叠加建立了参数化的宽弦风扇叶片模型,利用碰摩动力学研究了叶片造型对于机匣碰摩振动的影响规律。宽弦风扇叶片的复杂几何造型可能会增大碰摩的非线性程度,因此有必要研究叶片几何外型对于碰摩响应的影响。在圆柱坐标系下建立了叶片造型和几何参数间的关系,得到了风扇叶片的参数化模型。利用三次样条拟合简化了叶顶间隙的计算,研究了偏心碰摩工况下基准叶片的振动问题,分析了振动响应、涂层磨损、叶片应力三者间的关联性。基于涂层磨损程度判断不同造型叶片的碰摩特性,实现了针对碰摩-造型相关性的快速分析。计算结果表明:叶根通流角可以显著影响叶身长度,进而改变了叶片固有频率调整碰摩共振的中心频率;叶顶扭转角通过改变最小抗弯刚度方向,可有效减小碰摩共振转速区间;相较于前倾叶片,后倾叶片有着更好的碰摩稳定性。

关键词：宽弦风扇叶片叶片造型碰摩振动参数化建模相关性分析

Dynamic changes of wound-related miRNAs after application of autologous platelet-rich gel in diabetic wounds

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Chinese Medical Journal 2022年第21期135卷 2644-2646页

作者： Yan Li Yujie Liang Yunyi Gao dawei chen Xingwu Ran Department of Endocrinology and Metabolism Innovation Center for Wound RepairDiabetic Foot Care CenterWest China HospitalSichuan UniversityChengduSichuan 610041China

To the Editor:Diabetic chronic cutaneous ulcers(DCUs)are among the most common and serious complications of diabetes *** foot ulcers are the most common type of DCU and are now considered a global epidemic.[1]The clinical prevention and treatment of DCUs are critical and have remained challenging for *** the exploration of topical treatment methods,autologous platelet-rich gel(APG)is regarded as an adjuvant therapy to promote wound healing,and it has been widely used for wound repair.[2]Some microRNAs that play a critical role in the whole wound healing process have been found in wound tissues,which we call wound-related miRNAs(wr-miRNAs).However,few studies have explored the dynamic changes of wr-miRNAs during APG *** study aimed to evaluate the efficacy of APG in treating diabetic wounds and explore the dynamic changes of wr-miRNAs during wound healing.

关键词： prevention treatment miRNAs

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低压微电网中的功率传输特性

电工技术学报 2010年第7期25卷 117-122,143页

作者：陈达威朱桂萍清华大学电机系电力系统国家重点实验室北京100084

由于微电网的电压低、容量小以及其中的大多数微电源通过电力电子装置实现组网,因此微电网中功率在电源之间以及电源和负载之间的传输与高压输电网中的功率传输特性有很大区别,需要加以特别研究。首先通过理论推导,对比分析了在中高压... 详细信息

由于微电网的电压低、容量小以及其中的大多数微电源通过电力电子装置实现组网,因此微电网中功率在电源之间以及电源和负载之间的传输与高压输电网中的功率传输特性有很大区别,需要加以特别研究。首先通过理论推导,对比分析了在中高压输电网和低压微电网中功率传输特性的区别,给出了微电网中传输线路的有功功率P和无功功率Q的解析表达式。分析结果表明,由于传输线特性不同,功率的自然分布在两种电网中存在很大的区别;并通过仿真,定量分析了线路阻抗参数变化对功率分布的影响。接着讨论了微电源联网对电压源型逆变装置输出特性的要求,包括对逆变装置的输出电压的幅值、相位和频率的控制,并给出了仿真结果。最后以线路损耗最小为目标,对微电网中功率在各分布式电源间的分配做了优化仿真。

关键词：微电网电压型逆变器负荷分配

3D nano-printed geometric phase metasurfaces for generating accelerating beams with complex amplitude manipulation

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Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 86-95页

作者： Tianchen Tang Saima Kanwal Yongzheng Lu Yuelong Li Shuangbao Wu Lei chen Ziheng Qian Zhouyu Xie Jing Wen dawei Zhang Research Center of Optical Instrument and System Ministry of Education and Shanghai Key Lab of Modern Optical SystemUniversity of Shanghai for Science and TechnologyShanghai 200093China

Metasurface,a forefront in emerging optical devices,has demonstrated remarkable potential for complex amplitude manipulation of light ***,prevailing approaches face challenges in spatial resolution and complexities associated with integrating dynamic phases,impeding the simplified design and reproducible fabrication of ***,we introduce an innovative approach for complex amplitude modulation within 3D nano-printed geometric phase *** approach enables the generation of self-accelerating beams by encoding amplitude through phase-only manipulation,achieving high spatial ***,this method circumvents the conventional need to adjust the geometric parameters of metasurface unit structures for amplitude manipulation,offering a streamlined and efficient route for design and fabrication *** novel methodology holds promise for expedited and low-cost manufacturing of complex amplitude manipulation metasurfaces.

关键词： metasurface complex amplitude manipulation geometric phase 3D nano-printing Airy beam accelerating parabolic beam