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Uncovering the evolution of tin use in the United States and its implications

《环境科学与工程前沿（英文）》 2021年第15卷第6期 doi: 10.1007/s11783-021-1406-6

摘要：

• US tin use decreases as the GDP value added by manufacturing sector increases.

关键词： Tin use GDP Curve fitting Logistic model Gompertz model

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SARS流行预测分析

王建锋

《中国工程科学》 2003年第5卷第8期页码 23-29

摘要：

表面上突如其来的SARS本质上却有极规律的内在发展演化机制，遵从初始缓慢增长、加速、减速和稳定终止四个阶段总体道路，自然和社会生活领域众多事件演化都符合这一规律，因而可以运用广义的Logistic基于先期流行的广东SARS感染病例数据，以及尚未结束的北京、全国2003年SARS流行统计数据，借助于最优化分析技术，运用广义的Logistic生长模型对该事件演化特征参量进行了辨识；在此基础上，又借助于广义生长模型的特例

关键词： SARS 广义的Logistic生长模型 Gompertz分布预测最优化

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Inhibitive effects of three compositae plants on

Weihao ZHANG, Fuqing XU, Wei HE, Xing ZHENG, Chen YANG

《环境科学与工程前沿（英文）》 2009年第3卷第1期页码 48-55 doi: 10.1007/s11783-008-0065-1

摘要： Based on common phenomena of biochemical interaction between plants and microorganisms, the inhibitive effects of three common terrestrial compositae plants, namely DC., (L.) Cronq., and (L.) Sch.-Bip. on the blue algae was studied. Live compositae plants are co-cultivated with algae in two different inoculation doses for 10 days in 5-pools incubators, in order to exclude the influence of bacteria and nutrients. The results show that DC has the most inhibitive potential among the three plants as evidenced by the most drastic decrease in optical density (OD ) of the algae. The inhibition rate is 93.3% (with initial inoculation dose of 2.0 × 10 Cells/mL) and 89.3% (with initial inoculation dose of 4.0 × 10 Cells/mL) respectively on the 10 day of cultivation. The average inhibition rate during the later half of the experiment is 0.76 (with initial inoculation dose of 2.0 × 10 Cells/mL) and 0.71 (with initial inoculation dose of 4.0 × 10 Cells/mL), respectively. Logistic model analysis shows that compositae plants such as DC. causes the reduction of the habitat's carrying capacity of algae. ANOVA analysis is used to determine the similarity and differences between every experimental group and an average inhibitive rate model is used to evaluate the inhibition effects. The results show that DC., which grow well in the aquatic environment, may have a great potential in controlling algae bloom in eutrophic water.

关键词： allelopathy compositae plants Microcystis aeruginosa inhibition rate logistic model analysis

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Vague集Vague图及其在ITS物流中的应用

张然,刘扬,谢砚青,张江,贺仲雄

《中国工程科学》 2004年第6卷第8期页码 57-63

摘要：

在模糊集（fuzzy set）的基础上讨论了“双模糊集”Vague集的基本概念和运算形式，具体讨论了Vague聚类分析、Vague多准则决策、Vague图等问题及其在现代物流中的应用。最后给出根据正、负两方面效益选择运输方案的Vague集在物流中的应用实例。

关键词：智能物流人工智能 Vague集 Vague图在ITS物流中的应用

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农村绝经后妇女性生活满意度及其影响因素分析

景秀,杨继高,刘俊,张丽华

《中国工程科学》 2014年第16卷第5期页码 105-109

摘要：文化程度、家庭收入、家庭结构、是否患有妇科疾病、最近两周是否有生殖道不适、起居方式、是否需要性生活、性生活频率、老年性保健知识、自觉体力状态及自觉生活状态等12 个变量有关（P<0.05）；多因素Logistic

关键词：绝经后妇女性生活满意度影响因素 Logistic分析

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图引导正则最小化的随机超梯度的交替方向方法 None

Qiang LAN, Lin-bo QIAO, Yi-jie WANG

《信息与电子工程前沿（英文）》 2018年第19卷第6期页码 755-762 doi: 10.1631/FITEE.1601771

摘要：提出并比较额外梯度交替方向的几种随机变体方法，称为带拉格朗日函数（SEGL）的随机超梯度交替方向法和带增广拉格朗日函数（SEGAL）的随机超梯度交替方向法。这些方法由两个大规模凸目标函数组成，可最小化图形引导的优化问题。机器学习中一些重要应用遵循图导引优化公式等作为线性回归、逻辑回归、Lasso结构化扩展以及结构化正则化逻辑回归的原则。通过融合逻辑回归和图形引导正则化回归，在几类数据集上进行了试验。试验结果表明所提算法优于其他竞争算法，且在实际应用中，SEGAL比SEGL性能更好。

关键词：随机优化；图形引导最小化；超梯度法；融合逻辑回归；图导向正则化逻辑回归

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动态蚁群算法在带时间窗车辆路径问题中的应用

刘云忠,宣慧玉

《中国工程科学》 2005年第7卷第12期页码 35-40

摘要：

蚁群算法是近年来新出现的一种随机型搜索寻优算法。自从在旅行商等著名问题中得到富有成效的应用之后，已引起人们越来越多的关注和重视。将这种新型的生物优化思想扩展到物流管理中的带时间窗车辆路径问题，设计了一种动态蚁群算法，从数值计算上探索了这种新型蚁群算法的优化能力，获得了满意的效果。

关键词：蚁群算法带时间窗车辆路径问题物流管理动态

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基于随机森林模型的滑动轨迹人机识别 Research Articles

Zhen-yi XU, Yu KANG, Yang CAO, Yu-xiao YANG

《信息与电子工程前沿（英文）》 2019年第20卷第7期页码 925-929 doi: 10.1631/FITEE.1700442

摘要：识别码在维护网络安全的人机身份验证中得到广泛应用。人机身份验证面临的挑战包括对人与机器滑动轨迹的正确检测。提出一种基于滑动轨迹数据集的人机识别随机森林模型。通过多维性能评价指标，包括识别准确率、识别召回率、识别误报率、识别漏报率、F值和加权准确率，验证该随机森林模型以及基准模型（逻辑回归模型和支持向量机）。随机森林模型多维性能评价指标优于基准模型。

关键词：人机识别；随机森林；支持向量机；逻辑回归；多维性能评价指标

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Presentation of machine learning methods to determine the most important factors affecting road traffic accidents on rural roads

Hamid MIRZAHOSSEIN; Milad SASHURPOUR; Seyed Mohsen HOSSEINIAN; Vahid Najafi Moghaddam GILANI

《结构与土木工程前沿（英文）》 2022年第16卷第5期页码 657-666 doi: 10.1007/s11709-022-0827-z

摘要： The purpose of this research was to develop statistical and intelligent models for predicting the severity of road traffic accidents (RTAs) on rural roads. Multiple Logistic Regression (MLR) was used to predict the likelihood of RTAs. For more accurate prediction, Multi-Layer Perceptron (MLP) and Radius Basis Function (RBF) neural networks were applied. Results indicated that in MLR, the model obtained from the backward method with the correct percent of 84.7% and R² value of 0.893 was the best method for predicting the likelihood of RTAs. Also, MLR showed that the variables of not paying attention to the front not paying attention to the frontroad ahead, followed byand then vehicle-motorcycle/bike accidents were the greatest problems. Among the models, MLP had a better performance, so that the prediction accuracy of MLR, MLP, and RBF were 84.7%, 96.7%, and 92.1%, respectively. MLP model, due to higher accuracy, showed that the variable of reason of accident had the highest effect on the prediction of accidents, and considering MLR results, the variables of not paying attention to the front and then vehicle-motorcycle/bike accidents had the most influence on the occurrence of accidents. Therefore, motorcyclists and cyclists are more prone to accidents, and appropriate solutions should be adopted to enhance their safety.

关键词： safety rural accidents multiple logistic regression artificial neural networks

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枢纽港—物流港联动的罗泾港区规划设计创新

吴澎

《中国工程科学》 2012年第14卷第3期页码 92-99

摘要：

新近建成的上海港罗泾港区是集矿石、煤炭、钢铁等散杂货物为一体的综合性港区，是世界上第一座公共港区为大型钢铁企业提供分拨配送等增值服务的物流港区。罗泾港区规划设计开发了全新的“枢纽港—物流港”联动的平行结构平面布置模式。在传统的公用港口布置方法基础上，运用准时制（JIT）的精益生产（LP）物流理念，优化装卸工艺和港口平面布置，提升服务水平，延伸港口服务链条；实现了物流流程的高度一体化、同步化；节约了极为宝贵的深水岸线和土地资源、降低了能耗。

关键词：港口规划设计枢纽港物流港延伸港口服务链条

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通过物流机器人网络实现仓库自动化：一种信息物理控制方法 Tutorial

蔡凯

《信息与电子工程前沿（英文）》 2020年第21卷第5期页码 649-808 doi: 10.1631/FITEE.2000156

摘要：本文提供使用机器人网络实现仓库自动化的背景教程并回顾近期相关文献。提出一种新的信息物理控制方法，以实现多机器人服务“货到人”物流作业的安全、无锁死、高效和自适应行为。该方法的核心是增量式监督控制设计算法，该算法相对于机器人数量在计算上可扩展。最后，给出30个机器人在可变环境下的一个实例分析，以验证该方法的有效性。

关键词：离散事件系统；信息物理系统；机器人网络；仓库自动化；物流

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Standard model of knowledge representation

Wensheng YIN

《机械工程前沿（英文）》 2016年第11卷第3期页码 275-288 doi: 10.1007/s11465-016-0372-3

摘要：

Knowledge representation is the core of artificial intelligence research. Knowledge representation methods include predicate logic, semantic network, computer programming language, database, mathematical model, graphics language, natural language, etc. To establish the intrinsic link between various knowledge representation methods, a unified knowledge representation model is necessary. According to ontology, system theory, and control theory, a standard model of knowledge representation that reflects the change of the objective world is proposed. The model is composed of input, processing, and output. This knowledge representation method is not a contradiction to the traditional knowledge representation method. It can express knowledge in terms of multivariate and multidimensional. It can also express process knowledge, and at the same time, it has a strong ability to solve problems. In addition, the standard model of knowledge representation provides a way to solve problems of non-precision and inconsistent knowledge.

关键词： knowledge representation standard model ontology system theory control theory multidimensional representation

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受限空间火灾模型研究进展

郑昕,袁宏永

《中国工程科学》 2004年第6卷第3期页码 68-74

摘要：

火灾模型是从工程科学的角度出发，分析研究火灾的发生、发展，烟气蔓延以及火灾对周围环境诸如建筑设备、森林植被及大气环境等影响的数学模型。介绍了广泛应用于建筑物内部受限空间的场、区域、网模型以及经验模型的理论思想与数学方程，分析了4种模型在相应环境下应用的合理性，并对火灾模型的发展做出了展望。

关键词：受限空间场模型区域模型网模型场区网模型经验模型

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Elevated temperature creep model of parallel wire strands

《结构与土木工程前沿（英文）》页码 1060-1071 doi: 10.1007/s11709-023-0981-y

摘要： Parallel wire strands (PWSs), which are widely used in prestressed steel structures, are typically in high-stress states. Under fire conditions, significant creep effects occur, reducing the prestress and influencing the mechanical behavior of PWSs. As there is no existing approach to analyze their creep behavior, this study experimentally investigated the elevated temperature creep model of PWSs. A charge-coupled camera system was incorporated to accurately obtain the deformation of the specimen during the elevated temperature creep test. It was concluded that the temperature level had a more significant effect on the creep strain than the stress level, and 450 °C was the key segment point where the creep rate varied significantly. By comparing the elevated temperature creep test results for PWSs and steel strands, it was found that the creep strain of PWSs was lower than that of steel strands at the same temperature and stress levels. The parameters in the general empirical formula, the Bailey–Norton model, and the composite time-hardening model were fitted based on the experimental results. By evaluating the accuracy and form of the models, the composite time-hardening model, which can simultaneously consider temperature, stress, and time, is recommended for use in the fire-resistance design of pre-tensioned structures with PWSs.

关键词： parallel wire strands experimental study elevated temperature creep model

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Impact of crude distillation unit model accuracy on refinery production planning

Gang FU, Pedro A. Castillo CASTILLO, Vladimir MAHALEC

《工程管理前沿（英文）》 2018年第5卷第2期页码 195-201 doi: 10.15302/J-FEM-2017052

摘要： In this work, we examine the impact of crude distillation unit (CDU) model errors on the results of refinery-wide optimization for production planning or feedstock selection. We compare the swing cut+ bias CDU model with a recently developed hybrid CDU model (Fu et al., 2016). The hybrid CDU model computes material and energy balances, as well as product true boiling point (TBP) curves and bulk properties (e.g., sulfur % and cetane index, and other properties). Product TBP curves are predicted with an average error of 0.5% against rigorous simulation curves. Case studies of optimal operation computed using a planning model that is based on the swing cut+ bias CDU model and using a planning model that incorporates the hybrid CDU model are presented. Our results show that significant economic benefits can be obtained using accurate CDU models in refinery production planning.

关键词： impact of model accuracy on production planning swing cut+ bias CDU model hybrid CDU model refinery feedstock selection optimization optimization of refinery operation