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Dynamic Shading and Glazing Technologies:Improve Energy,Visual,and Thermal Performance

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Energy and Built Environment 2024年第2期5卷 211-229页

作者： Weixuan lu School of Architecture University of Southern CaliforniaLos AngelesCAUnited States

Conventional static glazing sometimes has poor performance in energy,visual,and thermal *** this thesis,a series of simulations of an office building were done to compare the performance of conventional static glazing,exterior static and kinetic shades,dynamic glazing,and dynamic glazing working together with static or kinetic shades as a combinatorial *** thesis introduced a method for designers to make decisions among multiple shading and glazing options.A scoring system was developed to evaluate the overall ***,visual and thermal performance all had the same *** uses included annual Energy Use Intensity(EUI)and peak cooling loads of the hottest day of the *** performance included maximizing daylight and minimizing glare on the fall equinox *** performance included Predicted Mean Vote(PMV)Index which determined thermal comfort based on occupants’sensations and Predicted Percentage of Dissatisfied(PPD)which indicated the levels of thermal discomfort *** prediction was that the combination of dynamic glazing and kinetic shade would have better comprehensive performance and earn higher scores than other options.

关键词： Energy Daylight Thermal comfort Electrochromic glass Kinetic shades

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航空瞬变电磁数据光滑拟二维反演

地球物理学进展 2021年第4期36卷 1573-1580页

作者：路俊涛雷达任浩杨良勇中国科学院深地资源装备技术工程实验室中国科学院地质与地球物理研究所北京100029 中国科学院页岩气与地质工程重点实验室中国科学院地质与地球物理研究所北京100029 中国科学院地球科学研究院北京100029 中国科学院大学北京100049

航空瞬变电磁法适用于浅表地层的大面积探测,由于实测数据量巨大,一维反演作为一种快速高效的方法被广泛应用.在层状地电条件下,横向约束反演能有效的改善传统单点阻尼最小二乘反演结果中界面横向不连续的情况,但其存在反演过程依赖初... 详细信息

航空瞬变电磁法适用于浅表地层的大面积探测,由于实测数据量巨大,一维反演作为一种快速高效的方法被广泛应用.在层状地电条件下,横向约束反演能有效的改善传统单点阻尼最小二乘反演结果中界面横向不连续的情况,但其存在反演过程依赖初始模型,且在复杂层状情况下迭代不稳定的问题.本文提出一种基于OCCAM反演并在正则化项中引入横向光滑约束的光滑拟二维反演方法,在保持OCCAM方法对初始模型依赖性小优势的同时,也使得相邻测点电性横向连续.在反演过程中采用令满足迭代误差的测点不再参与后续迭代的策略,以此减少不必要的正演和雅可比计算,提高反演效率.通过对三个不同地电情况的理论模拟数据进行光滑拟二维反演,并与其他传统反演方法对比,验证了该方法能有效的提高反演稳定性,得到与理论模型高度吻合的反演结果.

关键词：航空瞬变电磁拟二维反演横向光滑反演稳定性

The joint knowledge reasoning model based on knowledge representation learning for aviation assembly domain

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Science China(Technological Sciences) 2024年第1期67卷 143-156页

作者： LIU PeiFeng QIAN lu lu Hu XUE Lei ZHAO XingWei TAO Bo State Key Laboratory of Digital Manufacturing Equipment and Technology Department of MechanicalHuazhong University of Science and TechnologyWuhan 430074China School of Transportation and Logistics Engineering Wuhan University of Technology(WHUT)Wuhan 430063China Shanghai Aircraft Manufacturing Co. Ltd.Shanghai 201324China

Knowledge graph technology is widely applied in the domain of general knowledge reasoning with an excellent *** fine-grained professional fields,professional knowledge graphs can provide more accurate information in practical industrial *** on an aviation assembly domain-specific knowledge graph,the article constructs a joint knowledge reasoning model,which combines a named entity recognition model and a subgraph embedding learning *** performing knowledge reasoning tasks,the two models vectorize entities,relationships and entity attributes in the same space,so as to share parameters and optimize learning *** knowledge reasoning model,which provides intelligent question answering services,is able to reduce the assembly error rate and improve the assembly *** system can accurately solve general knowledge reasoning problems in the assembly process in actual industrial scenarios of general assembly and component assembly under interference-free ***,this paper compares the proposed knowledge reasoning model based on knowledge representation learning and the question-answering system based on large-scale pre-trained *** the application scenario of system functional testing in general assembly,the joint model attains an accuracy rate of 95%,outperforming GPT with 78%accuracy and enhanced representation through knowledge integration with 71%accuracy.

关键词： intelligent manufacturing knowledge graph aviation assembly knowledge representation knowledge-based question an-swering

Evaluation method for electromagnetic interference complexity of high voltage switch based on feature extraction and GCC-GRU network

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High Voltage 2024年第3期9卷 749-761页

作者： Wenchao lu Jiandong Duan Lin Cheng Jiangping lu Jiaxin Tao Jianning Yin School of Electrical Engineering Xi'an University of TechnologyXi'anChina Power Research Institute of State Grid Shaanxi Electric Power Co. LtdXi'anChina

When some new-type sensors are subjected electromagnetic interference(EMI),the traditional standard can no longer serve as the guidance for their EMI ***,it is necessary to evaluate the complexity of the new sensing equipment's suffering from electromagnetic interference.A hybrid method of feature extraction and complexity evaluation of Electromagnetic Interference signals based on generalised correntropy criterion(GCC)is ***,a variational mode decomposition al-gorithm for adaptive extraction of decomposed signals is constructed using GCC,and Generalised S-transform is used for processing and ***,according to the time-frequency space model,a new quantitative evaluation criterion interference factor is proposed,which overcomes the shortcomings of the traditional qualitative classification and the inability to solve the cross classification of ***,the Gated Recurrent Unit is introduced,and the GCC-GRU evaluation model with GCC as the loss function is *** authors conduct EMI tests and measured signal eval-uation with Medium Voltage and High Voltage switches,and the results show that the method proposed is correct and effective.

关键词： complexity criterion network

A flexible multiscale algorithm based on an improved smoothed particle hydrodynamics method for complex viscoelastic flows

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Applied Mathematics and Mechanics(English Edition) 2024年第8期45卷 1387-1402页

作者： Jinlian REN Peirong lu Tao JIANG Jianfeng LIU Weigang lu College of Mathematical Science Yangzhou UniversityYangzhou 225002Jiangsu ProvinceChina College of Hydraulic Science and Engineering Yangzhou UniversityYangzhou 225002Jiangsu ProvinceChina

Viscoelastic flows play an important role in numerous engineering fields,and the multiscale algorithms for simulating viscoelastic flows have received significant attention in order to deepen our understanding of the nonlinear dynamic behaviors of viscoelastic ***,traditional grid-based multiscale methods are confined to simple viscoelastic flows with short relaxation time,and there is a lack of uniform multiscale scheme available for coupling different solvers in the simulations of viscoelastic *** this paper,a universal multiscale method coupling an improved smoothed particle hydrodynamics(SPH)and multiscale universal interface(MUI)library is presented for viscoelastic *** proposed multiscale method builds on an improved SPH method and leverages the MUI library to facilitate the exchange of information among different solvers in the overlapping *** test the capability and flexibility of the presented multiscale method to deal with complex viscoelastic flows by solving different multiscale problems of viscoelastic *** the first example,the simulation of a viscoelastic Poiseuille flow is carried out by two coupled improved SPH methods with different spatial *** effects of exchanging different physical quantities on the numerical results in both the upper and lower domains are also investigated as well as the absolute errors in the overlapping *** the second example,the complex Wannier flow with different Weissenberg numbers is further simulated by two improved SPH methods and coupling the improved SPH method and the dissipative particle dynamics(DPD)*** numerical results show that the physical quantities for viscoelastic flows obtained by the presented multiscale method are in consistence with those obtained by a single solver in the overlapping ***,transferring different physical quantities has an important effect on the numerical results.

关键词： multiscale method improved smoothed particle hydrodynamics(SPH) dissipative particle dynamics(DPD) multiscale universal interface(MUI) complex viscoelastic flow

Ion and electron motions in the outer electron diffusion region of collisionless magnetic reconnection

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Earth and Planetary Physics 2024年第3期8卷 472-478页

作者： Cong Chang QuanMing lu San lu Kai Huang RongSheng Wang Deep Space Exploration Laboratory School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences(CAS)Center for Excellence in Comparative Planetology CAS Key Laboratory of Geospace EnvironmentHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China

Two-dimensional particle-in-cell simulations are performed to study the coupling between ion and electron motions in collisionless magnetic *** electron diffusion region(EDR),where the electron motions are demagnetized,is found to have a two-layer structure:an inner EDR near the reconnection site and an outer EDR that is elongated to nearly 10 ion inertial lengths in the outflow *** the inner EDR,the speed of the electron outflow increases when the electrons move away from the X *** the outer EDR,the speed of the electron outflow first increases and then decreases until the electrons reach the boundary of the outer *** the boundary of the outer EDR,the magnetic field piles up and forms a depolarization *** the perspective of the fluid,a force analysis on the formation of electron and ion outflows has also been *** the X line,the electrons are accelerated by the reconnection electric field in the out-of-plane *** the electrons move away from the X line,we find that the Lorentz force converts the direction of the accelerated electrons to the x direction,forming an electron *** electric field forces and electron gradient forces tend to drag the electron *** acceleration along the x direction is caused by the Lorentz force,whereas the pressure gradient force tends to decelerate the ion *** these two terms are important,their effects on ions are almost *** Hall electric field force does positive work on ions and is not *** ions are continuously accelerated,and the ion and electron outflow velocities are almost the same near the depolarization front.

关键词： collisionless magnetic reconnection electron diffusion region force analysis particle-in-cell simulation

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碳载CuTAPP的ESR研究(Ⅱ)

物理化学学报 1989年第2期5卷 202-205页

作者：陆君涛刘小平查全性武汉大学化学系

本文利用ESR技术详细研究了室温至150℃范围内CuTAPP在碳表面的行为。提出了铜卟啉在碳表面吸附水膜中的二维扩散机理。对较高温度处理后铜卟啉的ESR也作了简要报道。

关键词： CuTAPP 碳载体催化剂 ESR

A new review of single-ion conducting polymer electrolytes in the light of ion transport mechanisms

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Journal of Energy Chemistry 2024年第2期89卷 543-556,I0012页

作者： Yuqi luo lu Gao Weimin Kang State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes School of Textile Science and EngineeringTiangong UniversityTianjin 300387China

With the depletion of fossil fuels and the demand for high-performance energy storage devices,solidstate lithium metal batteries have received widespread attention due to their high energy density and safety *** them,the earliest developed organic solid-state polymer electrolyte has a promising future due to its advantages such as good mechanical flexibility,but its poor ion transport performance dramatically limits its performance ***,single-ion conducting polymer electrolytes(SICPEs)with high lithium-ion transport number,capable of improving the concentration polarization and inhibiting the growth of lithium dendrites,have been proposed,which provide a new direction for the further development of high-performance organic polymer *** view of this,lithium ions transport mechanisms and design principles in SICPEs are summarized and discussed in this *** modification principles currently used can be categorized into the following three types:enhancement of lithium salt anion-polymer interactions,weakening of lithium salt anion-cation interactions,and modulation of lithium ion-polymer *** addition,the advances in single-ion conductors of conventional and novel polymer electrolytes are summarized,and several typical highperformance single-ion conductors are enumerated and analyzed in what way they improve ionic conductivity,lithium ions mobility,and the ability to inhibit lithium ***,the advantages and design methodology of SICPEs are summarized again and the future directions are outlined.

关键词： Lithium metal batteries Single-ion conductor Polymer electrolytes Ion transport mechanism Li-ion transport number

A solution method for decomposing vector fields in Hamilton energy

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Chinese Physics B 2024年第9期33卷 645-653页

作者： Xin Zhao Ming Yi Zhou-Chao Wei Yuan Zhu lu-lu lu School of Mathematics and Physics China University of GeosciencesWuhan 430074China

Hamilton energy,which reflects the energy variation of systems,is one of the crucial instruments used to analyze the characteristics of dynamical *** we propose a method to deduce Hamilton energy based on the existing *** derivation process consists of three steps:step 1,decomposing the vector field;step 2,solving the Hamilton energy function;and step 3,verifying *** order to easily choose an appropriate decomposition method,we propose a classification criterion based on the form of system state variables,i.e.,type-I vector fields that can be directly decomposed and type-II vector fields decomposed via exterior ***,exterior differentiation is used to represent the curl of low-high dimension vector fields in the process of ***,we exemplify the Hamilton energy function of six classical systems and analyze the relationship between Hamilton energy and dynamic *** solution provides a new approach for deducing the Hamilton energy function,especially in high-dimensional systems.

关键词： Hamilton energy dynamical systems vector field exterior differentiation