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Designing novel adaptive dynamic event-triggered protocols for uncertain multi-agent systems

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Science China(Information Sciences) 2024年第1期67卷 310-311页

作者： bin CheNG bin he College of Electronics and Information Engineering Tongji University Frontiers Science Center for Intelligent Autonomous Systems

Multi-agent systems (MASs) have garnered widespread attention and have been investigated by numerous researchers in recent years, primarily due to their broad applications in industry, transportation, agriculture, and astronomy. While studying the cooperative control of MASs, numerous researchers place emphasis on reducing the frequency of communication among neighboring agents.

关键词： Directed graphs

Direct hydride derivatization of methyl- and ethylmercury chlorides in aqueous solution with KBH_4

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Journal of Environmental Sciences 2000年第3期12卷 275-278页

作者： he bin JIANG Gui-bin Research Centre for Eco Environmental Sciences Chinese Academy of SciencesBeijing 10085China

A convenient hydride derivatization procedure of methyl\|and ethylmercury chlorides to volatile hydrides was reported. In sealed vials methylmercury and ethylmercury compounds in acidic aqueous solutions were converted into their volatile forms by the reaction with potassium tetrahydroborate(KBH 4) and elvolved to the headspace of the vials. The gaseous analytes in the headspace were extracted and concentrated by solid phase microextraction(SPME) and injected into gas chromatography (GC) for separation and identified by mass selective detector(MS).

关键词： hydride derivatization methyl\| and ethylmercury gas chromatography mass selective detector

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基于注意力循环神经网络的联合深度推荐模型

现代电子技术 2025年第1期48卷 80-84页

作者：郭东坡何彬张明焱段超江汉大学湖北武汉430056 华中师范大学湖北武汉430079 浙江师范大学浙江省智能教育技术与应用重点实验室浙江金华321004

为了向用户推荐符合兴趣偏好的项目,设计一种基于注意力循环神经网络的联合深度推荐模型。将双层注意力机制设置于网络中,该模型由五个部分构成,在输入层中生成联合深度推荐模型的输入矩阵,通过序列编码层对项目评论文本语义展开正向和... 详细信息

为了向用户推荐符合兴趣偏好的项目,设计一种基于注意力循环神经网络的联合深度推荐模型。将双层注意力机制设置于网络中,该模型由五个部分构成,在输入层中生成联合深度推荐模型的输入矩阵,通过序列编码层对项目评论文本语义展开正向和反向编码,获得隐藏状态输出,并将其输入双层注意力机制中,提取项目特征,利用全连接层提取用户偏好特征。在预测层中建立项目与用户的交互模型,获得项目评分,为用户推荐高评分的项目。为了提高模型精度,加权融合MSE损失函数、CE损失函数和RK损失函数建立组合损失函数,对深度联合训练模型展开训练,提高模型的推荐性能。仿真结果表明,所提方法具有良好的推荐效果,能够适应不断变化的市场需求和用户行为。

关键词：双层注意力机制循环神经网络用户偏好组合损失函数交互模型联合深度推荐模型

Exact explicit solitary wave and periodic wave solutions and their dynamical behaviors for the Schamel–Korteweg–de Vries equation

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Chinese Physics B 2021年第6期30卷 62-76页

作者： bin he Qing Meng College of Mathematics and Statistics Honghe UniversityMengzi 661100China

The Schamel–Korteweg–de Vries equation is investigated by the approach of *** existences of solitary wave including ω-shape solitary wave and periodic wave are proved via investigating the dynamical behaviors with phase space *** sufficient conditions to guarantee the existences of the above solutions in different regions of the parametric space are *** possible exact explicit parametric representations of the waves are also *** with the details of the analyses,the analytical results are numerically simulated lastly.

关键词： Schamel–Korteweg–de Vries equation dynamical behavior solitary wave solution periodic wave solution

Effects of fabricated error on transmission performance of double layer frequency selective surface configuration

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光学精密工程 2005年第5期13卷 599-603页

作者： he bin SUN Lian-chun Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033China

Based on the experimental results, in which the fabricated error of the double layer frequency selective surface (FSS) leads to the transmission loss and the resonant frequency leaves away the design resonant frequency, the inter-layer separation distance (ISD) and the unit cell aligning error (UAE) were used as main variables to study the transmission performance attenuation of the double layer FSS configuration. The numerical analysis model for ISD and UAE was established and also was used to simulate the ring unit cell FSS transmission performance by the finite element and periodic moment methods. The double layer ring aperture FSS configuration designed was used as the numerical model. As a result of the numerical analysis, it is shown that both ISD and UAE produce insertion transmission loss (ITL) and insertion phase distortion (IPD) directly. Furthermore, ISD results in more loss of the amplitude of the transmitted signal for the FSS than UAE. It is significant for the designer of the multiplayer FSS to assign the fabricated error of the FSS dielectric layers. The UAE introduces the insertion phase variation badly.

关键词： FSS 平衡性 ISD 结构设计 UAE 光学机械

Tunable Emission and Energy Transfer of the Novel KY_(1-x)(MoO_(4))_(2-y)(WO_(4))y:xLn^(3+)(Ln^(3+)=Dy^(3+),Eu^(3+),and Tm^(3+))Single-phase White Luminescence Phosphor for White LEDs

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Journal of Wuhan University of Technology(Materials Science) 2023年第6期38卷 1278-1286页

作者： ZHU Hai he bin HUANG Weigang Department of Oncology The Third People's Hospital of ChengduAfiliated Hospital of Southwest Jiaotong University&The Second Affiliated Hospital of ChengduChongqing Medical UniversityChengdu 610031China Medical Research Center The Third People's Hospital of ChengduAfiliated Hospital of Southwest Jiaotong University&The Second Afiliated Hospital of ChengduChongqing Medical UniversityChengdu 610031China National Engineering Research Center for Biomaterials College of Biomedical MaterialsSichuan UniversityChengdu 610064China College of Materials Science and Engineering Sichuan UniversityChengd 610064China

The phosphors of KY_(1-x)(MoO_(4))_(2-y)(WO_(4))y:xLn^(3+)(Ln^(3+)=Tm^(3+),Dy^(3+),Eu^(3+))were synthesized by using a sol-gel ***,the crystal structure,luminescence properties,energy transfer,and white emission of the prepared materials were *** molar ratio of the anion group on the photoluminescence(PL)emission and excitation intensity were investigated,revealing that the optimum intensity could be obtained by using=3:*** optimal Dy^(3+) doping concentration of KY(MoO_(4))1.5(WO4)0.5was *** addition,the color-tunable emissions of Dy^(3+)/Eu^(3+)-codoped KY(MoO_(4))1.5(WO4)0.5phosphors were observed because of the effective energy transfer(ET)from Dy^(3+)to Eu^(3+)***,by doping appropriate concentrations of Tm^(3+),Dy^(3+),and Eu^(3+)and different concentrations of(WO_(4))^(2-),white light emitting phosphors KY_(0.92)(WO_(4))2:0.01Tm^(3+),0.06Dy^(3+),0.01Eu^(3+)with excellent color-rending properties were *** chromaticity coordinate was calculated as(x=0.3238,y=0.3173),closing to the artificial daylight(D65,x=0.313,y=0.329)illuminant,and which indicates the potential application of near ultraviolet White light-emitting diodes(WLEDs).

关键词： rare earth phosphors white LEDs energy transfer sol-gel method

Cluster Effect and Intermittency

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Chinese Physics Letters 1994年第6期11卷 329-332页

作者： GAO Chongshou he bin CCAST(World Laboratory) P.O.Box 8730Beijing 100080 Department of Physics Peking UniversityBeijing 100871 Institute of Theoretical Physics Academia SinciaBeijing 100080

A new method is used to obtain two parameters about the size of hadron *** comparison with the results from another method it is found that the intermittency behaviors are closely related with short-range correlation ... 详细信息

关键词： cluster hadron method

Control of MSC Differentiation by Tuning the Alkyl Chain Length of Phe- nylboroinc Acid Based Low-molecular-weight Gelators

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Journal of Bionic Engineering 2018年第4期15卷 682-692页

作者： Jing he Yalong Hu Fang Wu bin he Wenxia Gao National Engineering Research Centre for Biomaterials Sichuan University Chengdu 610064 China College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325027 China

The physical environment plays a critical role in modulating stem cell differentiation into specific lineages. In this study, we designed and synthesized a series of low-molecular-weight gels （LMWGs） with different moduli based on phenylboronic acid derivatives. The moduli of the LMWGs were readily tuned by varying the alkyl chain without any chemical crosslinker. The cell responses to the gels were evaluated with mesenchymal stem cell （MSCs）, in respect of cell morphology, proliferation and differentiation. The prepared gels were non-toxic to MSCs, suggesting good biocompatibility. The hydrogel stiffness exerted a striking modulation effect on MSC fate decisions, where MSCs were inclined to differentiate into osteoblasts in stiff LMWGs and into chondrocytes in soft LMWGs. The pivotal elastic modulus of the LMWGs to drive MSC differentiation into osteoblastic lineage and chondrocytic lineage were approximately 20 kPa - 40 kPa and 1 kPa - 10 kPa, respectively. Overall, our results demonstrated that the modification ofhydrogel stiffness via tuning the alkyl chain was a simple but effective approach to regulate MSC differentiation into specific lineage, which might have important implications in the design of LMWGs for tissue engineering applications.

关键词： low-molecular-weight gels phenylboronic acid alkyl chain mesenchymal stem cell osteoblast differentiation chondrocytic differentiation

Compositional Prompting Video-language Models to Understand Procedure in Instructional Videos

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Machine Intelligence Research 2023年第2期20卷 249-262页

作者： Guyue Hu bin he Hanwang Zhang Nanyang Technological University Singapore 639798Singapore The 15th Research Institute of China Electronics Technology Group Corporation Beijing 100083China

Instructional videos are very useful for completing complex daily tasks,which naturally contain abundant clip-narration *** works for procedure understanding are keen on pretraining various video-language models with these pairs and then finetuning downstream classifiers and localizers in predetermined category *** video-language models are proficient at representing short-term actions,basic objects,and their combinations,but they are still far from understanding long-term *** addition,the predetermined procedure category faces the problem of combination disaster and is inherently inapt to unseen ***,we propose a novel compositional prompt learning(CPL)framework to understand long-term procedures by prompting short-term video-language models and reformulating several classical procedure understanding tasks into general video-text matching ***,the proposed CPL consists of one visual prompt and three compositional textual prompts(including the action prompt,object prompt,and procedure prompt),which could compositionally distill knowledge from short-term video-language models to facilitate long-term procedure ***,the task reformulation enables our CPL to perform well in all zero-shot,few-shot,and fully-supervised *** experiments on two widely-used datasets for procedure understanding demonstrate the effectiveness of the proposed approach.

关键词： Prompt learning video-language pretrained models instructional videos procedure understanding knowledge distilling