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Multi-stage emergency decision-making method based on cumulative prospect theory and intuitionistic fuzzy number

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RAIRO - Operations Research 2021年 55卷 S2953-S2968页

作者： Xu, Junxiang Guo, Jingni Zhang, Jin Liu, Weihua Ma, Hui School of Transportation and Logistics Southwest Jiaotong University Chengdu611756 China National United Engineering Laboratory of Integrated and Intelligent Transportation Southwest Jiaotong University Chengdu611756 China National Engineering Laboratory of Integrated Transportation Big Data Application Technology Chengdu611756 China China Railway Design Corporation Chengdu610031 China

Aiming at the problem where the dynamic adjustment of reference points under the impact of decision makers' emotions may lead to different decision-making results, this research proposes a multi-stage emergency decision-making method with the emotion updating mechanism of decision makers. The method of setting dynamic reference points under the influence of decision-makers' emotions is given in this study, and the scenario value of each stage of emergency is calculated by using cumulative prospect theory, so as to describe the emotion renewal mechanism of decision-makers. The scenario weights of each stage are calculated, and the prospect values of alternatives at each stage are calculated according to the prospect value, input costs and start-up time values of the alternatives. Furthermore, by giving a calculation method of the weight of each stage, the overall values of the alternatives are calculated and the ranking of the alternatives is given. Taking Sichuan Tibet emergency rescue in China as an case analysis, the scientific rationality of the theory proposed in this paper is verified. © EDP Sciences, ROADEF, SMAI 2021.

关键词： Dynamics

Image super-resolution via dynamic network

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arXiv

arXiv 2023年

作者： Tian, Chunwei Zhang, Xuanyu Zhang, Qi Yang, Mingming Ju, Zhaojie School of Software Northwestern Polytechnical University Xi’an710129 China National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean Big Data Application Technology Xi’an710129 China Research & Development Institute Northwestern Polytechnical University Shenzhen China School of Economics and Management Harbin Institute of Technology at Weihai Weihai264209 China Tencent AI lab Shenzhen China School of Computing University of Portsmouth PortsmouthPO1 3HE United Kingdom

Convolutional neural networks depend on deep network architectures to extract accurate information for image super-resolution. However, obtained information of these convolutional neural networks cannot completely express predicted high-quality images for complex scenes. In this paper, we present a dynamic network for image super-resolution (DSRNet), which contains a residual enhancement block, wide enhancement block, feature refinement block and construction block. The residual enhancement block is composed of a residual enhanced architecture to facilitate hierarchical features for image super-resolution. To enhance robustness of obtained super-resolution model for complex scenes, a wide enhancement block achieves a dynamic architecture to learn more robust information to enhance applicability of an obtained super-resolution model for varying scenes. To prevent interference of components in a wide enhancement block, a refinement block utilizes a stacked architecture to accurately learn obtained features. Also, a residual learning operation is embedded in the refinement block to prevent long-term dependency problem. Finally, a construction block is responsible for reconstructing high-quality images. Designed heterogeneous architecture can not only facilitate richer structural information, but also be lightweight, which is suitable for mobile digital devices. Experimental results show that our method is more competitive in terms of performance, recovering time of image super-resolution and complexity. The code of DSRNet can be obtained at https://***/hellloxiaotian/DSRNet. Copyright © 2023, The Authors. All rights reserved.

关键词： Network architecture

A Modelling Approach for Coordinated Car Flow Assignment between Technical Stations Based on the Optimization of the Departure Mode Strategy

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SSRN 2022年

作者： Xue, Feng Cheng, Daibing Yang, Zongqin Ma, Xiaochen Chen, Chongshuang School of Transportation and Logistics Southwest Jiaotong University Chengdu611756 China National Engineering Laboratory of Integrated Transportation Big Data Application Technology Southwest Jiaotong University Chengdu611756 China National United Engineering Laboratory of Integrated and Intelligent Transportation Southwest Jiaotong University Chengdu611756 China Transportation and Urban Planning Group Eindhoven University of Technology Eindhoven5612AZ Netherlands School of Mathematics Southwest Jiaotong University Chengdu611756 China

This study analysed the characteristics and departure conditions of different accumulation modes and design a freight train cooperative operation scheme between technical stations based on a hybrid accumulation mode. A coordinated freight train assignment model between technical stations is proposed with the objective function of minimizing the dwell time of cars at two technical stations. Considering the characteristics of the car flow connection problem, the standard grey wolf optimization algorithm coding method and individual location update formula are improved, and are used for optimization. The classification sequence and assignment plan of freight trains are obtained. The results of a case study show that the total dwell time of the vehicles at two technical stations has been reduced by 35.82 h, and the number of punctual outbound trains in the phase plan has been increased by two. The cooperative flow assignment improves the efficiency of the car flow organization compared with the single station flow assignment. © 2022, The Authors. All rights reserved.

关键词： Optimization

Life cycle assessment of green production of glass substrate 20th

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Life cycle assessment of green production of glass substrate

20th Chinese Materials Conference, CMC 2019

作者： Wang, Yulong Gong, Xianzheng Sun, Boxue College of Materials Science and Engineering Beijing University of Technology No. 100 Ping Le Yuan Chaoyang District Beijing100124 China National Engineering Laboratory for Industrial Big-data Application Technology No. 100 Ping Le Yuan Chaoyang District Beijing100124 China

ISBN: (纸本)9783035715668

In this study, the LCA assessment model of CML was employed to analyze the environmental burden caused by the production of glass substrates, and the evaluation of the environmental performance of five stages of preparation of ingredients, including glass melting, precision clarification, overflow molding and post process, was also conducted. The results show that the global warming potential is the dominant impact category in the comprehensive environmental burden with a normalized value of 4.64×10-14, followed by the acidification potential (2.57×10-14), photochemical oxidation potential (2.82×10-15). And the relative contribution of abiotic depletion potential and human toxicity to the comprehensive environmental burden is rather limited, with the normalized values of 8.31×10-17 and 1.21×10-16, respectively. The single score of environmental impact due to the whole production system is 2.37×10-13, wherein the environmental impact values of the processes of preparation of ingredients, glass melting, precision clarification, overflow molding, and post are 1.07×10-15, 9.10×10-14 (highest), 2.26×10-14, 7.36×10-14, and process 4.90×10-14, respectively. The preparation of the batch, the glass melting, the overflow molding and the post process mainly cause the environmental effects of global warming potential and acidification potential, the cumulative values of which are 1.13×10-13 and 9.01×10-14, respectively. The precision clarification stage mainly causes the environmental effect of acidification potential, the value of which is 2.02×10-14 and much higher than those of other environmental impact categories. © 2020 Trans Tech Publications Ltd, Switzerland.

关键词： Life cycle

Improving Pedestrian Traffic by Sound-Induced Step Synchronization

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SSRN 2022年

作者： Fu, Zhijian Schadschneider, Andreas Xiong, Xingwen Luo, Lin Jia, Qihao School of Transportation and Logistics Southwest Jiaotong University PRC Chengdu611756 China Institut für Theoretische Physik Universität zu Köln Köln50937 Germany National Engineering Laboratory for Integrated Transportation Big Data Application Technology Southwest Jiaotong University Chengdu611756 China National United Engineering Laboratory of Integrated and Intelligent Transportation Southwest Jiaotong University Chengdu611756 China

We develop a method at the operational level for pedestrian traffic improvement and seek a proper explanation for the discrepancy among the fundamental diagrams of pedestrian dynamics by experiments and theoretical analysis. Since sound is flexible and can strongly influence the walking behavior of pedestrians, in the experiment, participants were asked to walk under different types of sound. Results show that (1) regular sound increases pedestrian efficiency. Walking under a monotone with a rhythm slower than the normal walking pace, the pedestrian flow increases by 36.8% at most. Periodic tones have an even better performance than monotones, and the flow falls as pedestrians do not follow the sound. (2) Under regular tones, participants become less sensitive to the spatial distance, and step synchronization (i.e., marching in lock-step) becomes more likely to occur, diminishing stop-go movement. Then, the utilization of the available space between pedestrians in the longitudinal direction is significantly improved in the high-density regime. The theory is developed relating the macro-flow with the micro-step, and finally, possible engineering applications of this research are discussed. © 2022, The Authors. All rights reserved.

关键词： Synchronization

Synthesis of Flower-Like Bi/Bi2o3/Wo3 Tri-Composites and the Visible-Light-Driven Photocatalytic Property

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SSRN 2022年

作者： Xi, Xiaoli Zhao, Linyan Liu, Yangsi Cheng, Jiali Nie, Zuoren Collaborative Innovation Center of Capital Resource-Recycling Material Technology Faculty of Materials and Manufacturing Beijing University of Technology Beijing100124 China Key Laboratory of Advanced Functional Materials Ministry of Education Beijing University of Technology Beijing100124 China National Engineering Laboratory for Industrial Big-data Application Technology Beijing University of Technology Beijing100124 China Beijing Guyue New Materials Research Institute Beijing University of Technology Beijing100124 China

A novel tri-composite Bi/Bi2O3/WO3 product was fabricated via a facile and green hydrothermal-solvothermal method, and the morphology structure was tailored by adjusting the dosage of EDTA. The final three-dimensional (3D) flower-like Bi/Bi2O3/WO3 is in structure with one-dimensional (1D) nanorods surrounded by two-dimensional (2D) nanoflakes and zero-dimensional (0D) Bi spheres dispersed around randomly. Moreover, the growth mechanism of the flower-like Bi/Bi2O3/WO3 was clarified and illustrated, where the functions of organic ethylene glycol and EDTA were considered, and a coordination and epitaxy growth process was proposed. The Bi/Bi2O3/WO3 composite performed highest visible-light photocatalytic activities to organic pollutant methylene blue (MB) of up to 95% degradation rate, and impressive photocatalytic efficiency to methyl orange (MO) in a tri-pollutants system, indicating the application potential in wastewater treatment. The superior photocatalytic performance could mainly contribute to the large proportion of flower-like structure and the synergy effect of the dual-path transfer process of charges, where the Z-scheme structure and localized surface plasmon resonance (LSPR) phenomenon is involved and discussed. © 2022, The Authors. All rights reserved.

关键词： Bismuth compounds

Preparation of Tungsten Molybdenum Oxide from Secondary Resources by a Facile Heat-Treatment Process and its Superior Selective Adsorption Properties

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SSRN 2022年

作者： Liu, Yanan Liu, Yangsi Ma, Liwen Xi, Xiaoli Nie, Zuoren Collaborative Innovation Center of Capital Resource-Recycling Material Technology Beijing University of Technology Beijing100124 China Key Laboratory of Advanced Functional Materials Ministry of Education Faculty of Materials and Manufacturing Beijing University of Technology Beijing100124 China National Engineering Laboratory for Industrial Big-data Application Technology Beijing University of Technology Beijing100124 China Beijing Guyue New Materials Research Institute Beijing University of Technology Beijing100124 China

Tungsten molybdenum oxide was prepared by a facile heat-treatment process using ion exchange resins as the template. The morphology and crystallinity of the product can be controlled via varying the calcination temperature. The products show excellent selective adsorption properties for methylene blue (MB) and rhodamine B (RhB) model dyes with different molecular sizes and charges, especially for MB. The kinetic data show that the product accords with the pseudo-second-order kinetic model, and the adsorption isotherm can be described by Langmuir adsorption isotherm. When the concentration of MB is 100 mg/L, the adsorption capacity of the product for MB can be 833.43 mg/g, which is higher than that reported in many works of literature. Electrostatic adsorption was found to be the main adsorption mechanism. The heat-treatment method was successfully used to obtained tungsten molybdenum oxide from W-Mo alloy scrap. © 2022, The Authors. All rights reserved.

关键词： Tungsten compounds

An adversarial human pose estimation network injected with graph structure

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arXiv

arXiv 2021年

作者： Tian, Lei Wang, Peng Liang, Guoqiang Shen, Chunhua School of Computer Science Northwestern Polytechnical University Xi’an China National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean Big Data Application Technology China School of Computer Science The University of Adelaide Australia

Because of the invisible human keypoints in images caused by illumination, occlusion and overlap, it is likely to produce unreasonable human pose prediction for most of the current human pose estimation methods. In this paper, we design a novel generative adversarial network (GAN) to improve the localization accuracy of visible joints when some joints are invisible. The network consists of two simple but efficient modules, i.e., Cascade Feature Network (CFN) and Graph Structure Network (GSN). First, the CFN utilizes the prediction maps from the previous stages to guide the prediction maps in the next stage to produce accurate human pose. Second, the GSN is designed to contribute to the localization of invisible joints by passing message among different joints. According to GAN, if the prediction pose produced by the generator G cannot be distinguished by the discriminator D, the generator network G has successfully obtained the underlying dependence of human joints. We conduct experiments on three widely used human pose estimation benchmark datasets, i.e., LSP, MPII and COCO, whose results show the effectiveness of our proposed framework. © 2021, CC BY.

关键词： Generative adversarial networks

Long term results in children underwent nuss procedure preschool with pectus excavatum: Real-world study with propensity matching

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Heliyon 2024年第20期10卷 e39477页

作者： Wang, Quan Kong, Xiangpan Ren, Chunian Pan, Zhengxia Wu, Chun Li, Hongbo Li, Yonggang Wang, Gang Dai, Jiangtao Department of Cardiothoracic Surgery Children's Hospital of Chongqing Medical University Ministry of Education Key Laboratory of Child Development and Disorders International Science and Technology Cooperation Base of Child Development and Critical Disorders National Clinical Research Center for Child Health and Disorders Chongqing Key Laboratory of Pediatrics Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering Chongqing Higher Institution Engineering Research Center of Children's Medical Big Data Intelligent Application Chongqing China Department of Urology Children's Hospital of Chongqing Medical University China

Background: It is controversial when surgery should be performed for pectus excavatum (PE). The study retrospectively compared the long-term prognosis in PE children undergoing the Nuss procedure at the age of 4–6 versus those performing surgery at the age of 12–14. Methods: 178 patients were included in the retrospective real-world research. Clinical Characteristics were collected at baseline. The endpoint of the study was set as the last follow-up at the age of 18 in outpatient services. Satisfaction and complication rate were set as the primary outcome and were collected at the endpoint. Hospital stay post-surgery and analgesia dosage were regard as the secondary outcome. To reduce potential bias between two different age groups, propensity score matching (PSM) analysis was analysized. Results: The oral analgesic dosage of children in the 4–6 years old age group is significantly lower than that of the 12–14 years old group (0.70/kg, 0.30–1.50/kg versus 1.50/kg, 0.90–2.30/kg, P < 0.001), and children in the younger age group are discharged earlier. There was no difference in overall satisfaction (89.1 %, versus 88.20 %, P = 0.99) and recurrence rate (7.2 %, versus 6.8 %, P = 0.99) between the two groups of when they reach the age of 18. Conclusions: Performing Nuss procedure at the age of 4–6 does not affect the overall long-term satisfaction of the child or increase the long-term recurrence rate. Surgical intervention in children with pectus excavatum preschool can provide a better postoperative experience in hospital compared with intervention in adolescent. © 2024 The Authors

关键词： Long-term results Nuss procedure Pectus excavatum Preschool