资源类型

期刊论文 1097

会议视频 12

年份

2023 85

2022 102

2021 79

2020 78

2019 59

2018 48

2017 49

2016 53

2015 57

2014 43

2013 39

2012 43

2011 37

2010 47

2009 46

2008 37

2007 38

2006 33

2005 28

2004 22

展开 ︾

关键词

数学模型 13

模型试验 9

数值模拟 8

模型 7

COVID-19 4

不确定性 4

Agent 3

GM(1 3

计算机模拟 3

1)模型 2

DX桩 2

D区 2

Preissmann格式 2

SARS 2

TRIZ 2

Weibull分布 2

k-ε模型 2

临震信号 2

云模型 2

展开 ︾

检索范围：

排序： 展示方式：

of herding behavior of tradable green certificate market players on market efficiency: Insights from heterogeneousagent model

《能源前沿（英文）》 2023年 第17卷 第2期   页码 266-285 doi: 10.1007/s11708-021-0752-1

摘要： Tradable green certificate (TGC) scheme promotes the development of renewable energy industry which currently has a dual effect on economy and environment. TGC market efficiency is reflected in stimulating renewable energy investment, but may be reduced by the herding behavior of market players. This paper proposes and simulates an artificial TGC market model which contains heterogeneous agents, communication structure, and regulatory rules to explore the characteristics of herding behavior and its effects on market efficiency. The results show that the evolution of herding behavior reduces information asymmetry and improves market efficiency, especially when the borrowing is allowed. In addition, the fundamental strategy is diffused by herding evolution, but TGC market efficiency may be remarkably reduced by herding with borrowing mechanism. Moreover, the herding behavior may evolve to an equilibrium where the revenue of market players is comparable, thus the fairness in TGC market is improved.

关键词： tradable green certificate     herding behavior     evolution     heterogeneous agent model     complex network    

HTML PDF 收藏

A multiscale material model for heterogeneous liquid droplets in solid soft composites

《结构与土木工程前沿（英文）》 2021年 第15卷 第5期   页码 1292-1299 doi: 10.1007/s11709-021-0771-3

摘要： Liquid droplets in solid soft composites have been attracting increasing attention in biological applications. In contrary with conventional composites, which are made of solid elastic inclusions, available material models for composites including liquid droplets are for highly idealized configurations and do not include all material real parameters. They are also all deterministic and do not address the uncertainties arising from droplet radius, volume fraction, dispersion and agglomeration. This research revisits the available models for liquid droplets in solid soft composites and presents a multiscale computational material model to determine their elastic moduli, considering nearly all relevant uncertainties and heterogeneities at different length scales. The effects of surface tension at droplets interface, their volume fraction, size, size polydispersity and agglomeration on elastic modulus, are considered. Different micromechanical material models are incorporated into the presented computational framework. The results clearly indicate both softening and stiffening effects of liquid droplets and show that the model can precisely predict the effective properties of liquid droplets in solid soft composites.

关键词： liquid in solid     soft composite     computational modeling     multiscale model     heterogeneity    

HTML PDF 收藏

基于分布式事件触发策略的异构非线性多智能体系统包含控制 Research Articles

孙雅妮,邹文成,郭健,向峥嵘

《信息与电子工程前沿（英文）》 2021年 第22卷 第1期   页码 1-140 doi: 10.1631/FITEE.2000034

摘要： 研究分布式事件触发策略下高阶异构非线性多智能体系统包含控制问题。为实现包含控制目标并减少智能体间的通讯损耗，采用反推控制法、李雅普诺夫函数分析法和神经网络，提出一种分布式事件触发控制策略。为避免对状态误差的连续监测，将事件触发情形的结论推广到自触发控制情形。所提控制协议和触发规则确保每个智能体的输出能在一定误差范围内收敛到有多个领导者信号组成的凸包中。此外，所有智能体都不会发生Zeno现象。最后，通过两个数值仿真案例证明所得结论的正确性。

关键词： 多智能体系统；分布式事件触发控制；包含控制；异构非线性系统；Zeno现象    

HTML PDF 收藏

具有异构时延的多智能体系统的领导-跟随同步 Research Articles

Branislav REH罧, Volodymyr LYNNYK

《信息与电子工程前沿（英文）》 2021年 第22卷 第1期   页码 1-140 doi: 10.1631/FITEE.2000207

摘要： 提出一种由时滞线性智能体组成的多智能体系统的领导-跟随同步算法。各智能体中存在的不同时滞会导致不收敛于零的同步误差。但是，可限制误差范数并给出误差边界。利用线性矩阵不等式对主要结果进行验证，且该问题的规模与智能体数量无关。通过案例对结果进行说明，强调稳定误差是由异构延迟引起的事实，并验证该算法在一定误差范围内有实现同步的能力。

关键词： 多智能体系统；时滞；线性矩阵不等式    

HTML PDF 收藏

A real-life stability model for a large shield-driven tunnel in heterogeneous soft soils

Xinyu HU, Zixin ZHANG, Scott KIEFFER

《结构与土木工程前沿（英文）》 2012年 第6卷 第2期   页码 176-187 doi: 10.1007/s11709-012-0149-7

摘要： The current models that have been published to date only allow for homogeneous soil at the tunnel face. This paper presents a real-life face stability model to determine the minimal pressure needed at the tunnel face for a large shield-driven tunnel in heterogeneous soft soils. It is found that the influence of multilayered soil boundaries is significant, especially for the mixed-layer (e.g., sand and clay) soils. The suggested M-M model is developed by considering the influence of the heterogeneity of the soil on the angle of slip and the minimal support pressure. Comparisons of the solutions in mixed-layer soils are conducted, and the effects of the involved parameters for a large, multilayered, shield-driven tunnel are also investigated.

关键词： analytical solution     shield-driven tunnel     multilayered soil     face stability    

HTML PDF 收藏

Comparison of the performance of traditional advection-dispersion equation and mobile-immobile modelfor simulating solute transport in heterogeneous soils

Haizhu HU,Xiaomin MAO

《农业科学与工程前沿（英文）》 2016年 第3卷 第3期   页码 241-248 doi: 10.15302/J-FASE-2016108

摘要： The traditional advection-dispersion equation (ADE) and the mobile-immobile model (MIM) are widely used to describe solute transport in heterogeneous porous media. However, the fitness of the two models is case-dependent. In this paper, the transport of conservative, adsorbing and degradable solutes through a 1 m heterogeneous soil column under steady flow condition was simulated by ADE and MIM, and sensitivity analysis was conducted. Results show that MIM tends to prolong the breakthrough process and decrease peak concentration for all three solutes, and tailing and skewness are more pronounced with increasing dispersivity. Breakthrough curves of the adsorbing solute simulated by MIM are less sensitive to the retardation factor compared with the results simulated by ADE. The breakthrough curves of degradable solute obtained by MIM and ADE nearly overlap with a high degradation rate coefficient, indicating that MIM and ADE perform similarly for simulating degradable solute transport when biochemical degradation prevails over the mass exchange between mobile and immobile zones. The results suggest that the physical significance of dispersivity should be carefully considered when MIM is applied to simulate the degradable solute transport and/or ADE is applied to simulate the adsorbing solute transport in highly dispersive soils.

关键词： solute transport     advection dispersion equation (ADE)     mobile-immobile model (MIM)     conservative solute     adsorbing solute     degradable solute     PHREEQC-2    

HTML PDF 收藏

工程项目供应链的委托-代理模型分析

吴育华,张庆民

《中国工程科学》 2008年 第10卷 第5期   页码 75-78

摘要：

从委托代理理论出发，对基于集成化供应链的委托-代理模型的一般形式进行讨论。在此基础上，结合工程项目集成化供应链中委托方和代理方的特点构建了工程项目供应链单期委托-代理模型和多阶段工程项目供应链声誉模型。

关键词： 委托-代理模型     激励模型     声誉模型     随机行走    

HTML PDF 收藏

Agent的PASS-BDI模型

樊玮,陈增强,袁著祉

《中国工程科学》 2004年 第6卷 第6期   页码 43-49

摘要：

Agent的BDI模型主要基于Bratman提出的理性主体理论，未能充分体现Agent主动性的认知过程，使Agent的问题求解和心智状态之间的关系未得到充分表达，且难于编程实现。将Das等人提出的计划—注意—同时性加工—继时性加工认知过程模型引入Agent的理论研究中，建立了Agent的PASS-BDI模型，利用多价π-演算从心智状态，认知过程，整体行为等几个方面刻画了该模型的静态和动态特征，并将研究结果应用于多Agent组织中Agent行为特征的刻画。PASS-BDI模型加强了对Agent主动性认知过程的刻画，且易于编程实现。

关键词： 主体     π-演算     认知过程     心智状态    

HTML PDF 收藏

基于元胞自动机的多自主体人员行为模型及其在性能化设计中的应用

方伟峰,杨立中,黄锐

《中国工程科学》 2003年 第5卷 第3期   页码 67-71

摘要：

目前性能化设计规范一个最主要的特点是从强调财产保护转变到强调生命安全保护，因此对建筑物内人员行为特征和运动规律的研究正越来越受到人们的重视。元胞自动机模型在交通流研究中的应用已经开展多年并取得了很多有用的成果，但涉及人的行为特征的研究往往十分复杂，在这方面利用自主体来研究具有较大的优势。给出的模型结合了这两方面各自的优势，是在元胞自动机交通流、行人流基本框架上建立起的多自主体人员行为模型，它对评估建筑物的设计方案具有很好的参考作用。

关键词： 元胞自动机模型     多自主体     人员行为     性能化设计    

HTML PDF 收藏

Computational design of heterogeneous catalysts and gas separation materials for advanced chemical processing

Huaiwei Shi, Teng Zhou

《化学科学与工程前沿（英文）》 2021年 第15卷 第1期   页码 49-59 doi: 10.1007/s11705-020-1959-0

摘要： Functional materials are widely used in chemical industry in order to reduce the process cost while simultaneously increase the product quality. Considering their significant effects, systematic methods for the optimal selection and design of materials are essential. The conventional synthesis-and-test method for materials development is inefficient and costly. Additionally, the performance of the resulting materials is usually limited by the designer’s expertise. During the past few decades, computational methods have been significantly developed and they now become a very important tool for the optimal design of functional materials for various chemical processes. This article selectively focuses on two important process functional materials, namely heterogeneous catalyst and gas separation agent. Theoretical methods and representative works for computational screening and design of these materials are reviewed.

关键词： heterogeneous catalyst     gas separation     solvent     porous adsorbent     material screening and design    

HTML PDF 收藏

Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1343-9

摘要：

• Microalgae oil application for biodiesel synthesis is discussed.

关键词： Biodiesel     Heterogeneous catalysis     Transesterification     Microalgae oil    

HTML PDF 收藏

移动agent在智能交通系统中的应用

张云勇,刘锦德

《中国工程科学》 2002年 第4卷 第7期   页码 46-50

摘要：

回顾了智能交通系统的起源、框架，在阐述移动aget的优点后，在网络管理、无线通信、交通控 制系统、仿真系统、地理信息系统等方面探讨了移动agent在智能交通系统中的应用。

关键词： 智能交通系统     移动agent     交通控制系统     地理信息系统     agent通信语言     agent迁移协议    

HTML PDF 收藏

多Agent系统中含糊性的处理方法

王自强,冯博琴

《中国工程科学》 2003年 第5卷 第9期   页码 72-77

摘要： 提出基于Kripke结构的多agent系统中含糊性的处理方法，多gent系统的信息状态用Kripke结构表示，并用tell函数来实现系统间的通信，而tell的应用受到Grice原理的约束。此方法能够正确地把由含糊子句传递信息中的语义含糊和感觉含糊区分开来，因而对于研究多agent系统具有一定的实用价值。

关键词： 多agent系统     含糊     处理方法     Kripke结构    

HTML PDF 收藏

Undrained seismic bearing capacity of strip footing adjacent to a heterogeneous excavation

《结构与土木工程前沿（英文）》 2023年 第17卷 第4期   页码 566-583 doi: 10.1007/s11709-023-0905-x

摘要： The analysis of the bearing capacity of strip footings sited near an excavation is critical in geotechnics. In this study, the effects of the geometrical features of the excavation and the soil strength properties on the seismic bearing capacity of a strip footing resting on an excavation were evaluated using the lower and upper bounds of the finite element limit analysis method. The effects of the setback distance ratio (L/B), excavation height ratio (H/B), soil strength heterogeneity (kB/cu), and horizontal earthquake coefficient (kh) were analyzed. Design charts and tables were produced to clarify the relationship between the undrained seismic bearing capacity and the selected parameters.

关键词： excavation     finite element limit analysis     heterogeneous soil     strip footing     undrained bearing capacity    

HTML PDF 收藏

Precursor-driven structural tailoring of iron oxychloride for enhanced heterogeneous Fenton activity

《化学科学与工程前沿（英文）》 2023年 第17卷 第10期   页码 1533-1543 doi: 10.1007/s11705-023-2330-z

摘要： Iron oxychloride (FeOCl) is a unique layered material with tunable electronic properties. The conventional synthetic route of chemical vapor transition involves a thermodynamics-driven gas–solid interfacial reaction which often generates macroscopic crystals with stable facets. In this study, through analyzing the effects of the synthetic parameters on the FeOCl synthesis, we discovered the dominant contribution of the α-Fe2O3 precursors on the chemical property of the FeOCl product, and subsequently developed a highly-controllable synthetic route of tailoring the FeOCl structures into small sizes and exposed high-energy facets via a facile and scalable mechanical-chemical approach. The synthesized products could be systematically tuned by the ball-milling conditions of the α-Fe2O3 precursors. With increased milling time, the FeOCl crystallites demonstrated reduced sizes and more exposed (110) facets. Intriguingly, these small-sized FeOCl catalysts exhibited much faster Fenton-like kinetics than the pristine macroscopic FeOCl materials. Specifically, FeOCl catalysts with a 12-hour milling time showed nearly 39 times higher efficiency toward phenol degradation than the pristine FeOCl. The structure-reactivity relationship was further elucidated using the combinatory analysis via density functional theory calculation, electron paramagnetic resonance and radical quenching probe experiments. This work provides a rationale for tailoring the surface structures of FeOCl crystallites for potential applications in environmental catalysis.

关键词： FeOCl     mechanical activation     heterogeneous Fenton reaction     ball milling    

HTML PDF 收藏

标题 作者 时间 类型 操作

of herding behavior of tradable green certificate market players on market efficiency: Insights from heterogeneousagent model

期刊论文

A multiscale material model for heterogeneous liquid droplets in solid soft composites

期刊论文

基于分布式事件触发策略的异构非线性多智能体系统包含控制

孙雅妮,邹文成,郭健,向峥嵘

期刊论文

具有异构时延的多智能体系统的领导-跟随同步

Branislav REH罧, Volodymyr LYNNYK

期刊论文

A real-life stability model for a large shield-driven tunnel in heterogeneous soft soils

Xinyu HU, Zixin ZHANG, Scott KIEFFER

期刊论文

Comparison of the performance of traditional advection-dispersion equation and mobile-immobile modelfor simulating solute transport in heterogeneous soils

Haizhu HU,Xiaomin MAO

期刊论文

工程项目供应链的委托-代理模型分析

吴育华,张庆民

期刊论文

Agent的PASS-BDI模型

樊玮,陈增强,袁著祉

期刊论文

基于元胞自动机的多自主体人员行为模型及其在性能化设计中的应用

方伟峰,杨立中,黄锐

期刊论文

Computational design of heterogeneous catalysts and gas separation materials for advanced chemical processing

Huaiwei Shi, Teng Zhou

期刊论文

Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

期刊论文

移动agent在智能交通系统中的应用

张云勇,刘锦德

期刊论文

多Agent系统中含糊性的处理方法

王自强,冯博琴

期刊论文

Undrained seismic bearing capacity of strip footing adjacent to a heterogeneous excavation

期刊论文

Precursor-driven structural tailoring of iron oxychloride for enhanced heterogeneous Fenton activity

期刊论文