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厦门市市政道路雨水径流污染研究

中国给水排水 2024年第4期40卷 19-24页

作者：林卫红厦门市城市规划设计研究院有限公司福建厦门361012

以厦门市不同行政区、功能区、道路等级和特征的市政道路为研究对象,通过采样与试验,采用径流污染物出流过程采样与降雨量同步观测、MV曲线等方法进行数据分析,明确了厦门市典型市政道路的雨水径流水质参数特征、时空变化规律和初期雨... 详细信息

以厦门市不同行政区、功能区、道路等级和特征的市政道路为研究对象,通过采样与试验,采用径流污染物出流过程采样与降雨量同步观测、MV曲线等方法进行数据分析,明确了厦门市典型市政道路的雨水径流水质参数特征、时空变化规律和初期雨水径流冲刷效应,提出厦门市市政道路污染物设计浓度参考值和道路初期雨水控制径流深度两个基础参数,以及重点防控的道路类型、初期雨水控制径流深度与年径流总量控制率的对应关系,可为厦门市道路面源污染控制和海绵城市建设提供科学依据。

关键词：道路雨水径流初期雨水冲刷效应初期雨水径流深度年径流总量控制率

Gregory Solid Construction for Polyhedral Volume Parameterization by Sparse Optimization

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Applied Mathematics(A Journal of Chinese Universities) 2019年第3期34卷 340-355页

作者： HU Chuan-feng lin hong-wei School of Mathematics Zhejiang UniversityHangzhou 310027China State Key Lab of CAD&CG Zhejiang UniversityHangzhou 310027China

In isogeometric analysis,it is frequently required to handle the geometric models enclosed by four-sided or non-four-sided boundary patches,such as trimmed surfaces.In this paper,we develop a Gregory solid based method to parameterize those models.First,we extend the Gregory patch representation to the trivariate Gregory solid representation.Second,the trivariate Gregory solid representation is employed to interpolate the boundary patches of a geometric model,thus generating the polyhedral volume parametrization.To improve the regularity of the polyhedral volume parametrization,we formulate the construction of the trivariate Gregory solid as a sparse optimization problem,where the optimization objective function is a linear combination of some terms,including a sparse term aiming to reduce the negative Jacobian area of the Gregory solid.Then,the alternating direction method of multipliers(ADMM)is used to solve the sparse optimization problem.Lots of experimental examples illustrated in this paper demonstrate the effectiveness and efficiency of the developed method.

关键词： Gregory solid Polyhedral volume parametrization Sparse optimization Regularity Isogeometric analysis

Data driven composite shape descriptor design for shape retrieval with a VoR-Tree

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Applied Mathematics(A Journal of Chinese Universities) 2018年第1期33卷 88-106页

作者： WANG Zi-hao lin hong-wei XU Chen-kai School of Mathematical Science State Key Lab.of CAD&CG Zhejiang University

We develop a data driven method(probability model) to construct a composite shape descriptor by combining a pair of scale-based shape descriptors. The selection of a pair of scale-based shape descriptors is modeled as the computation of the union of two events, i.e.,retrieving similar shapes by using a single scale-based shape descriptor. The pair of scale-based shape descriptors with the highest probability forms the composite shape descriptor. Given a shape database, the composite shape descriptors for the shapes constitute a planar point set.A VoR-Tree of the planar point set is then used as an indexing structure for efficient query operation. Experiments and comparisons show the effectiveness and efficiency of the proposed composite shape descriptor.

关键词： shape descriptor shape retrieval shape analysis data-driven model

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越江越海隧道入口处自发光标线应用效果

长安大学学报（自然科学版） 2024年第2期44卷 101-114页

作者：李琛陈丰林子鉴姜茗馨林宏伟同济大学道路与交通工程教育部重点实验室上海201804

针对越江越海隧道入口处事故多发问题,提出了一种基于自发光标线的改善策略。采用实车试验研究不同光环境下自发光标线的视认性能,以此验证自发光标线代替普通标线的可行性,并探究不同亮度与颜色之间的差异;构建越江越海隧道入口段三维... 详细信息

针对越江越海隧道入口处事故多发问题,提出了一种基于自发光标线的改善策略。采用实车试验研究不同光环境下自发光标线的视认性能,以此验证自发光标线代替普通标线的可行性,并探究不同亮度与颜色之间的差异;构建越江越海隧道入口段三维场景进行驾驶模拟试验,分析驾驶人在不同场景下的驾驶行为与主观感受,以此验证自发光标线设置于越江越海隧道入口段的应用效果。试验结果表明:在环境照度大于50000 lx时,与280、2500 cd/m^(2)相比,亮度为1500 cd/m^(2)的自发光标线视认性能最佳,其视认距离均值与普通标线接近,最高可达89 m;与黄色和白色相比,橙色自发光标线在视认性与舒适度方面均表现更好。在环境照度小于100 lx时,不同色温及亮度的自发光标线相较普通标线均可提升20 m以上的视认距离。此外,亮度对舒适度影响显著,其中280 cd/m^(2)表现最佳,而色温对舒适度影响不显著。相较于普通标线场景,自发光标线场景中车辆的车道保持性能更佳,行驶车速降低5~20 km/h。通过自发光标线的提前警示,驾驶人刹车踩踏频率、最大刹车力度与持续距离均有所减少,驾驶人主观感受上其紧张感与操作难度有所降低,自发光标线的应用对越江越海隧道入口处安全改善具有一定的效果。研究结果可为自发光标线或类似地面发光设施的亮度设置、应用方案设计等提供参考。

关键词：交通工程行车安全驾驶模拟自发光标线视认性越江越海隧道

Irrational-Behavior-Proof Conditions for Stochastic Games over Event Trees

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Journal of the Operations Research Society of China 2024年第1期12卷 243-263页

作者： Lei Wang Cui Liu hong-wei Gao Chong lin School of Automation Institute of Complexity ScienceQingdao UniversityQingdao 266071ShandongChina School of Mathematics and Statistics Institute of Applied Mathematics of ShandongQingdao UniversityQingdao 266071ShandongChina

In this paper,the irrational-behavior-proof conditions in a class of stochastic dynamic games over event trees are presented.Four kinds of irrational-behavior-proof conditions are proposed by the imputation distribution procedure,and their relationships are discussed.More specific properties for the general transformation of characteristic functions are developed,based on which,the irrational-behavior-proof conditions are proved to be true in a transformed cooperative game.

关键词： Dynamic cooperative game Event tree Irrational-behavior-proof condition Imputation distribution procedure Transformation of characteristic function

The Existence of a Meridional Curve in Closed Incompressible Surfaces in Fully Alternating link Complements

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Chinese Annals of Mathematics,Series B 2024年第1期45卷 73-80页

作者： wei lin School of Mathematical Sciences Dalian University of TechnologyDalian 116024LiaoningChina

Menasco showed that a closed incompressible surface in the complement of a non-split prime alternating link in S^(3) contains a circle isotopic in the link complement to a meridian of the links.Based on this result,he was able to argue the hyperbolicity of non-split prime alternating links in S3.Adams et al.showed that if F■S×I\L is an essential torus,then F contains a circle which is isotopic in S×I\L to a meridian of L.The author generalizes his result as follows:Let S be a closed orientable surface,L be a fully alternating link in S×I\If F ■ S×I\L is a closed essential surface,then F contains a circle which is isotopic in S×I\L to a meridian of L.

关键词： Fully alternating Incompressible surfaces Meridionally incompressible

A power-aware code-compression design for RISC/VLIW architecture

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第8期12卷 629-637页

作者： Che-wei lin Chang hong lin wei Jhih WANG Department of Electronic Engineering National Taiwan University of Science and Technology Taiwan 106 Taipei

We studied the architecture of embedded computing systems from the viewpoint of power consumption in memory systems and used a selective-code-compression (SCC) approach to realize our design.Based on the LZW (Lempel-Ziv-Welch) compression algorithm,we propose a novel cost effective compression and decompression method.The goal of our study was to develop a new SCC approach with an extended decision policy based on the prediction of power consumption.Our decompression method had to be easily implemented in hardware and to collaborate with the embedded processor.The hardware implementation of our decompression engine uses the TSMC 0.18μm-2p6m model and its cell-based libraries.To calculate power consumption more accurately,we used a static analysis method to estimate the power overhead of the decompression engine.We also used variable sized branch blocks and considered several features of very long instruction word (VLIW) processors for our compression,including the instruction level parallelism (ILP) technique and the scheduling of instructions.Our code-compression methods are not limited to VLIW machines,and can be applied to other kinds of reduced instruction set computer (RISC) architecture.

关键词： LZW compression Cell-based libraries Instruction level parallelism (ILP) VLIW processors

Towards sustainable adversarial training with successive perturbation generation

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Frontiers of Information Technology & Electronic Engineering 2024年第4期25卷 527-539页

作者： wei lin Lichuan LIAO College of Computer Science and Mathematics Fujian University of TechnologyFuzhou 350118China College of Economics and Management Xi’an University of TechnologyXi’an 710048China Fujian Provincial Key Laboratory of Big Data Mining and Applications Fujian University of TechnologyFuzhou 350118China

Adversarial training with online-generated adversarial examples has achieved promising performance in defending adversarial attacks and improving robustness of convolutional neural network models.However,most existing adversarial training methods are dedicated to finding strong adversarial examples for forcing the model to learn the adversarial data distribution,which inevitably imposes a large computational overhead and results in a decrease in the generalization performance on clean data.In this paper,we show that progressively enhancing the adversarial strength of adversarial examples across training epochs can effectively improve the model robustness,and appropriate model shifting can preserve the generalization performance of models in conjunction with negligible computational cost.To this end,we propose a successive perturbation generation scheme for adversarial training(SPGAT),which progressively strengthens the adversarial examples by adding the perturbations on adversarial examples transferred from the previous epoch and shifts models across the epochs to improve the efficiency of adversarial training.The proposed SPGAT is both efficient and effective;e.g.,the computation time of our method is 900 min as against the 4100 min duration observed in the case of standard adversarial training,and the performance boost is more than 7%and 3%in terms of adversarial accuracy and clean accuracy,respectively.We extensively evaluate the SPGAT on various datasets,including small-scale MNIST,middle-scale CIFAR-10,and large-scale CIFAR-100.The experimental results show that our method is more efficient while performing favorably against state-of-the-art methods.

关键词： Adversarial training Adversarial attack Stochastic weight average Machine learning Model generalization

Immune checkpoint inhibition mediated with liposomal nanomedicine for cancer therapy

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Military Medical Research 2024年第1期11卷 98-114页

作者： Guang-Long Ma wei-Feng lin Faculty of Medicine Centre for Cancer ImmunologyUniversity of SouthamptonSouthampton SO166YDUK Department of Molecular Chemistry and Materials Science Weizmann Institute of Science76100 RehovotIsrael Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191China

Immune checkpoint blockade(ICB)therapy for cancer has achieved great success both in clinical results and on the market.At the same time,success drives more attention from scientists to improve it.However,only a small portion of patients are responsive to this therapy,and it comes with a unique spectrum of side effects termed immunerelated adverse events(irAEs).The use of nanotechnology could improve ICBs’delivery to the tumor,assist them in penetrating deeper into tumor tissues and alleviate their irAEs.Liposomal nanomedicine has been investigated and used for decades,and is well-recognized as the most successful nano-drug delivery system.The successful combination of ICB with liposomal nanomedicine could help improve the efficacy of ICB therapy.In this review,we highlighted recent studies using liposomal nanomedicine(including new emerging exosomes and their inspired nanovesicles)in associating ICB therapy.

关键词： Liposome Exosome Immune checkpoint blockade(ICB)