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Light People:*** Bowers spoke about silicon photonics

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Light(Science & Applications) 2022年第12期11卷 2843-2848页

作者： Chenzi Guo Yating wan Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchunChina Integrated Photonics lab King Abdullah University of Science and TechnologyThuwalMakkah

Editorial Silicon photonics is advancing rapidly with many scientific and engineering advances and many new applications for *** highlight the topic,Light:Science&Applications invited John Bowers,director of the Institute for Energy Efficiency and distinguished professor from the University of California,Santa Barbara,to talk about the fundamentals and industries,and give a future perspective of silicon *** below is summarized from the video interview of *** original interview can be accessed in Supplementary video.

关键词： Efficiency interview photonics

Light people:*** Hu's adventure:from semiconductors to quantum-from industry to academia

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Light(Science & Applications) 2023年第8期12卷 1459-1466页

作者： Yating wan Chenzi Guo Integrated Photonics lab King Abdullah University of Science and TechnologyThuwalMakkah ProvinceSaudi Arabia Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchunChina

Editorial As part of our Light People series,we are delighted to have invited *** Hu,a highly accomplished scientist from Harvard University,to share with us her personal ***'s remarkable contributions in both academia and industry have taken her from industry giants to academia's most prestigious institutions,traversing various research frontiers that have played a critical role in the ongoing digital *** this interview,we aim to offer the Light community valuable insights into nanophotonics,quantum engineering,and ***'s research methodology and life philosophy,while also celebrating her outstanding achievements as a female role ***,our goal is to inspire more women to pursue careers in this important and rapidly expanding field,which has a profound impact on all sectors of *** following is a summary of an interview with Professor Evelyn Hu,available in the Supplementary Information.

关键词： interview frontier industry

STABLE AND ROBUST RECOVERY OF APPROXIMATELY k-SPARSE SIGNALS WITH PARTIAL SUPPORT INFORMATION IN NOISE SETTINGS VIA WEIGHTED ℓ_(p)(0

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Journal of Computational Mathematics 2023年第6期41卷 1137-1170页

作者： Biao Du Anhua wan School of Mathematics Sun Yat-sen UniversityGuangzhou 510275China

In the existing work,the recovery of strictly k-sparse signals with partial support information was derived in theℓ2 bounded noise *** this paper,the recovery of approximately k-sparse signals with partial support inf... 详细信息

关键词： Signal recovery weightedℓp minimization Approximately k-sparse signal Noise setting Reconstruction error bound Restricted isometry property

Study on the Two-Sides Matching between Multiple Rovers and Multiple Orbiters in Mars Relay Communications

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China Communications 2020年第7期17卷 80-93页

作者： Peng wan Yafeng Zhan Space center Tsinghua UniversityBeijing 100084China Beijing National Research Center for Information Science and Technology(BNRist) Beijing 100084China

In Mars relay communications,if multiple rovers and multiple orbiters are visible with each other at the same time in certain contact,there are not only issues concerned with the multiple rovers’access to single orbiter,but also the issues concerned with the optimal access orbiter selection for each rover,which is a complex multi-objective decision-making problem relating to the resource allocation optimizations in deep-space *** this paper,the two-sides matching between multiple rovers and multiple orbiters in Mars relay communications is proposed based on the access preferences,taking the two-sides combined fitness of preferences and the single-side evaluation equilibrium as the optimization objectives,which utilizes the parallel capsule operations architecture encapsulated with several one-to-many two-sides matching algorithms to obtain stable multiple access matching *** results show that,our method performs better than the CCSDS Proximity-1 protocols,and could achieve the effective utilization of deep space communication network resources.

关键词： matching utilize concerned

Evolution of soil DOM during thermal remediation below 100℃:concentration,spectral characteristics and complexation ability

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Frontiers of Environmental Science & Engineering 2024年第8期18卷 31-41页

作者： wan Huang Ziren wan Di Zheng Lifeng Cao Guanghe Li Fang Zhang State Key Joint Laboratory of Environment Simulation and Pollution Control State Environment Protection Key Laboratory of Microorganism Application and Risk ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China National Engineering Laboratory for Site Remediation Technologies Beijing 100015China

The impact of thermal remediation on soil function has drawn increasing *** far,as the most active fraction of soil organic matter,the evolution of dissolved organic matter(DOM)during the thermal remediation lacks in-depth investigation,especially for the temperatures value below 100℃.In this study,a series of soil thermal treatment experiments was conducted at 30,60,and 90℃ during a 90-d period,where soil DOM concentration increased with heating temperature and *** molecular weight,functional groups content and aromaticity of DOM all decreased during the thermal *** excitation-emission matrices(EEM)results suggested that humic acid-like substances transformed into fulvic acid-like substances(FIII/FV increased from 0.27 to 0.44)during the heating process,and five DOM components were further identified by *** change of DOM structures and components indicated the decline of DOM stability and hydrophilicity,and can potentially change the bioavailability and *** temperature also resulted in the decline of DOM complexation ability,which may be caused by the loss of binding sites due to the decrease of polar function groups,aromatic structures and hydrophilic *** study provides valuable information about the evolution of DOM during thermal remediation,which would potentially change the fate of metal ions and the effectiveness of the post-treatment technologies in the treated region.

关键词： Thermal remediation below 100℃ Heating temperature Soil DOM concentration DOM spectral characteristics Excitation-emission matrices(EEM) Complexation ability

An integrated stochastic model and algorithm for multi-product newsvendor problems

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International Journal of Modeling, Simulation, and Scientific Computing 2020年第4期11卷 53-77页

作者： Zhaoman wan Saihua Zhu Zhong wan School of Mathematics and Statistics Central South University ChangshaP.R.China

In this paper,a multi-product newsvendor problem is formulated as a random nonlinear integrated optimization model by taking into consideration the selling price,the producing and outsourcing quantities,and the nonlinear budget *** from the existing models,the demands of products depend on the prices,as well as being timevarying due to random market *** addition,outsourcing strategy is adopted to deal with possible shortage caused by the limited ***,the constructed model is involved with joint optimization of the producing and outsourcing quantities,and the selling prices of all the *** this model with continuous random demands,we first transform it into a nonlinear programming problem by expectation ***,an efficient algorithm,called the feasible-direction-based spectral conjugate gradient algorithm,is developed to find a robust solution of the *** case study and sensitivity analysis,some interesting conclusions are drawn as follows:(a)Budget is a critical constraint for optimizing the decision-making of the retailer,and there exist different threshold values of the budget for the substitute and complementarity scenarios.(b)The price sensitivity matrix seriously affects the maximal expected profit mainly through affecting the optimal outsourcing quantity.

关键词： Multi-product newsvendor problem efficient algorithm stochastic program spectral conjugate gradient method.

Scale Consistency Quantification for Subjective Evaluation of Vehicle Dynamics

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Automotive Innovation 2019年第2期2卷 121-126页

作者： wan’an Yang Pan Asia Automotive Technical Center Co.Ltd. No.2199 Jufeng RoadPudongShanghaiChina

The subjective evaluation of vehicle dynamics performance is widely applied in different stages of vehicle ***,the rating result has frequently been challenged because it is easily affected by various subjective and objective ***,there is no suitable index for determining evaluator’s consistency when performing a subjective evalua-tion of vehicle *** evaluation is quite unique,with limited samples,multiple indices,and poor repeatability,in addition to being stratified and two *** cross-grouped factor analysis(CFA)method is proposed to identify the scale for a subjective evaluation and to quantify its *** application case study revealed that the proposed method is effective.

关键词： Subjective evaluation Consistency Quantification Cross-grouped factor analysis

A Numerical Investigation of the Thermal Performances of an Array of Heat Pipes for Battery Thermal Management

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Fluid Dynamics & Materials Processing 2019年第4期15卷 343-356页

作者： Chaoyi wan School of Automobile and Traffic Engineering Jiangsu University of TechnologyChangzhou213001China

A comparative numerical study has been conducted on the thermal performance of a heat pipe cooling system considering several influential factors such as the coolant flow rate,the coolant inlet temperature,and the input power.A comparison between numerical data and results available in the literature has demonstrated that our numerical procedure could successfully predict the heat transfer performance of the considered heat pipe cooling system for a *** indicators such as temperature,heat flux,and pressure loss were extracted to describe the characteristics of such a *** the basis of the distributions of the temperature ratio of the battery surface,together with the heat flux and the streamlines around the heat pipe condenser,we conclude that the low disturbance of the coolant is the cause of the temperature gradient along the fluid flow direction.

关键词： Battery thermal management heat pipe numerical model temperature difference

A Discussion on Two Stochastic Elliptic Modeling Strategies

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Communications in Computational Physics 2012年第3期11卷 775-796页

作者： Xiaoliang wan Department of Mathematics and Center for Computation and Technology Louisiana State UniversityBaton RougeLA 70803USA

Based on the study of two commonly used stochastic elliptic models:I:−∇·(a(x,w)·∇u(x,w))=f(x)and II:−∇·(a(x,w)⋄∇u(x,w))=f(x),we constructed a new stochastic elliptic model III:−∇·(a^(−1))^(⋄(−1))⋄∇u(x,w)=f(x),in[20].The difference between models I and II is twofold:a scaling factor induced by the way of applying theWick product and the regularization induced by theWick product ***[20],we showed that model III has the same scaling factor as model *** this paper we present a detailed discussion about the difference between models I and III with respect to the two characteristic parameters of the random coefficient,i.e.,the standard deviation s and the correlation length *** results are presented for both one-and twodimensional cases.

关键词： Wiener chaos stochastic PDE stochastic modeling stochastic finite element method