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Transportation Safety and Environment 2024年第2期6卷 75-86页

作者： deqiang He Jingren Yan Zhenzhen Jin Xueyan Zou Sheng Shan Zaiyu Xiang Jian miao State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi Key Laboratory of Manufacturing System&Advanced Manufacturing Tec hnologySc hool of Mec hanical EngineeringGuangxi Univ ersityNanning 530004GuangxiChina Zhuzhou CRRC Times Electric Co. Ltd.Zhuzhou 412001HunanChina

Remaining useful life(RUL)prediction for bearing is a significant part of the maintenance of urban rail transit *** RUL is closely linked to the reliability and safety of train running,but the current prediction accuracy makes it difficult to meet the re-quirements of high reliability *** at the problem,a prediction model based on an improved long short-term memory(ILSTM)network is ***,the variational mode decomposition is used to process the signal,the intrinsic mode function with stronger representation ability is determined according to energy entropy and the degradation feature data is constructed com-bined with the time domain ***,to improve learning ability,a rectified linear unit(ReLU)is applied to activate a fully connected layer lying after the long short-term memory(LSTM)network,and the hidden state outputs of the layer are weighted by attention *** Harris Hawks optimization algorithm is introduced to adaptively set the hyperparameters to improve the performance of the ***,the ILSTM is applied to predict bearing *** experimental cases,the better perfor-mance in bearing RUL prediction and the effectiveness of each improving measures of the model are validated,and its superiority of hyperparameters setting is demonstrated.

关键词： train bearing remaining useful life prediction long short-term memory(LSTM) attention mechanism Harris Hawks op-timization(HHO)

中华民族视觉形象的文化叙事及实践——基于文化形象学的论析

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新疆师范大学学报（哲学社会科学版） 2025年第2期46卷 112-121页

作者：令小雄苗昕西北师范大学马克思主义学院教育部高校思想政治工作队伍培训研修中心(西北师范大学) 甘肃兰州730070

文本基于多维度理论系统梳理中华民族视觉形象的文化意蕴、内涵质态与构建策略,为铸牢中华民族共同体意识提供理论基础。一是运用文化符号学理论解析中华民族视觉形象的意涵及其历史演变,探赜“和合共生,合谐共美”价值理想承载的多元... 详细信息

文本基于多维度理论系统梳理中华民族视觉形象的文化意蕴、内涵质态与构建策略,为铸牢中华民族共同体意识提供理论基础。一是运用文化符号学理论解析中华民族视觉形象的意涵及其历史演变,探赜“和合共生,合谐共美”价值理想承载的多元一体文化格局,通过提炼核心符号,揭示视觉形象塑造在铸牢中华民族共同体意识中的重要作用。二是采用历史唯物主义方法论考察中华民族视觉形象在不同历史时期的构建与传播路径,通过文化形象考古学和文献学剖析视觉形象文化功能转变与价值重塑过程,探讨其在凝聚民族力量、强化国家认同中的重要意义。三是引入文化哲学、文化心理学视角分析视觉形象在增强社会凝聚力和心理认同中的内在机制,探究视觉符号通过激活集体记忆和情感共鸣、唤起民族自豪感和共同体意识成为社会整合的重要媒介。四是基于文化形象学视角提出构建中华民族视觉形象的策略:从中华文化形象本体论和认识论出发,提炼具有代表性的符号,利用现代数智科技和新媒体创新视觉形象的表达与传播,注重文化形象多样性的辩证统一,发掘整合各民族形象文化元素的共同意识。

关键词：中华民族视觉形象国家形象文化形象认同文化传播

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外科医师“非技术性技能”的培养

中华外科杂志 2025年第1期63卷 28-31页

作者：苗毅奚春华南京医科大学附属明基医院胰腺中心南京

外科手术是现代社会中风险性较高的活动之一, 外科医师在此高压环境下不仅需要精湛的技术, 还需具备完善的非技术性技能。非技术性技能不仅涵盖了情境感知、决策制定、沟通与团队合作、领导力、压力管理等关键能力, 还包括纠错反馈循环... 详细信息

外科手术是现代社会中风险性较高的活动之一, 外科医师在此高压环境下不仅需要精湛的技术, 还需具备完善的非技术性技能。非技术性技能不仅涵盖了情境感知、决策制定、沟通与团队合作、领导力、压力管理等关键能力, 还包括纠错反馈循环、情绪智力及适应复杂环境的能力等。这些"软技能"能够帮助外科医师更高效地应对手术中的突发状况, 优化团队协作, 确保患者安全, 并提高手术的成功率。欧美国家已将非技术性技能纳入医师的培训体系, 而在国内对此仍有待进一步重视和推广。通过建立完善的非技术性技能评估标准和系统化的培训体系, 能够提升外科医师的综合素质, 进而保障患者安全、提升临床效果, 实现外科医师的职业使命。

关键词：教育, 医学专业, 外科非技术性技能医师

Active learning based on belief functions

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Science China(Information Sciences) 2020年第11期63卷 69-83页

作者： Shixing ZHANG deqiang HAN Yi YANG Institute of Integrated Automation Xi'an Jiaotong University School of Aerospace Xi'an Jiaotong University

Active learning involves selecting a few critical unlabeled samples for manual and credible labeling to improve the performance of the current classifier. The critical step of active learning is the sample selection strategy. Uncertainty sampling is a well-known sample selection strategy, which involves selecting the samples for which the current classifier is uncertain. For the generalized linear model, these samples are usually distributed around the current classification hyperplane. However, uncertain samples include samples near the current classification hyperplane, and samples far from the current classification hyperplane and the labeled samples. Traditional uncertainty sampling fails to describe the latter, and traditional methods are easily affected by outliers. In this paper, belief functions are used to describe the uncertainty that exists in various samples. Furthermore, we propose a sample selection strategy based on belief *** results based on benchmark datasets show that the proposed approach outperforms several classical methods. Through this approach, higher classification accuracy can be achieved using the same number of new labeled samples.

关键词： active learning uncertainty sampling belief functions generalized linear model

Basic belief assignment approximations using degree of non-redundancy for focal element

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Chinese Journal of Aeronautics 2019年第11期32卷 2503-2515页

作者： Yi YANG deqiang HAN Jean DEZERT SKLSVMS School of AerospaceXi'an Jiaotong UniversityXi'an 710049China Center for Information Engineering Science Research XVan Jiaotong UniversityXi'an 710049China ONERA The French Aerospace LabChemin de la HunierePalaiseau F-91761France

Dempster-Shafer evidence theory, also called the theory of belief function, is widely used for uncertainty modeling and reasoning. However, when the size and number of focal elements are large, the evidence combination will bring a high computational complexity. To address this issue,various methods have been proposed including the implementation of more efficient combination rules and the simplifications or approximations of Basic Belief Assignments(BBAs). In this paper,a novel principle for approximating a BBA into a simpler one is proposed, which is based on the degree of non-redundancy for focal elements. More non-redundant focal elements are kept in the approximation while more redundant focal elements in the original BBA are removed first. Three types of degree of non-redundancy are defined based on three different definitions of focal element distance, respectively. Two different implementations of this principle for BBA approximations are proposed including a batch and an iterative type. Examples, experiments, comparisons and related analyses are provided to validate proposed approximation approaches.

关键词： BBA approximation Belief functions Evidence theory Focal element Non-redundancy

面向BORO和BOPS的零售商退货策略与渠道决策

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管理工程学报 2025年第1期39卷 271-284页

作者：毛照昉苗琪琪杨哲杜泽霖天津大学管理与经济学部

消费者体验需求的提升促使零售商不断探索新渠道模式,以提高原有实体店效益的同时优化线上经营策略。本文分别考虑传统BORO(buy online and return online)和开通BOPS(buy online and pickup in store)两种渠道情形,构建零售商针对消费... 详细信息

消费者体验需求的提升促使零售商不断探索新渠道模式,以提高原有实体店效益的同时优化线上经营策略。本文分别考虑传统BORO(buy online and return online)和开通BOPS(buy online and pickup in store)两种渠道情形,构建零售商针对消费者线上购买并在线上或线下退款的差异化退货策略利润模型,分析两种渠道情形下的最优定价和最优退货策略,进而考虑BOPS渠道的溢出效应,分析零售商在相同退货策略下是否应该开通BOPS渠道。结果表明:(1)在两种情形下,随着线下商店数量的增多,零售商均会倾向于在低开店成本下选择全额退款策略,倾向于在高开店成本下选择部分退款策略;(2)在同渠道情形下,全额退款策略的定价始终低于部分退款策略。在同退货策略下,BOPS情形下的定价始终低于BORO情形;(3)高溢出效应和多商店数量都促使零售商选择开通BOPS渠道,但商店数量决定了BOPS线下麻烦成本规模因子对零售商开通BOPS渠道起推动还是抑制作用。本文为既定商店数量下多渠道零售商退货策略与渠道选择提供了决策支持。

关键词：商店数量 BORO BOPS 退货策略渠道选择

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Selective separation of iron and scandium from Bayer Sc-bearing red mud

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Journal of Rare Earths 2023年第7期41卷 1099-1107,I0005页

作者： Junhui Xiao Kai Zou Nanlan Zhong deqiang Gao Sichuan Provincial Engineering Lab of Nonmetallic Mineral Powder Modification and High-Value Utilization Southwest University of Science and TechnologyMianyang 621010China Dongfang Boiler Group Co. Ltd.Zigong 643001China Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle Southwest University of Science and TechnologyMianyang 621010China

In this study,we investigated the separation of iron and scandium from Sc-bearing red *** red mud object of our study contained 31.11 wt%total iron(TFe),0.0045 wt%Sc,hematite(Fe_(2)O_(3))and ferrosilite(FeO·SiO_(2))as the main Fe-bearing *** Sc-bearing red mud was treated by a novel deep reduction roasting and magnetic separation process that includes the addition of coke and CaO to extract Fe and enriching Sc from the Sc-bearing red *** addition of coke and CaO enhances the transformation of hematite(Fe_(2)O_(3))to metallic iron(Fe~0)and magnetite(Fe_(3)O_(4))as well as the transformation of ferrosilite into metallic iron(Fe~0).The test results show that utilizing the new process a Fe concentrate with a TFe content of 81.22 wt%and Fe recovery of 92.96%was ***,magnetic separation tailings with Sc content of 0.0062 wt%and Sc recovery of 98.65%were also *** test results were achieved under the following process conditions:roasting temperature of 1373 K,roasting time of 45 min,calcium oxide dosage of 20 wt%,coke dosage of 25 wt%,grinding fineness of90%<0.04 mm,and magnetic field intensity of 0.24 *** major minerals in the Fe concentrate are metallic iron(Fe~0)and magnetite(Fe_(3)O_(4)).The main minerals in the magnetic separation tailings with a low TFe content of 2.62%are CaO·SiO_(2),Na_(2)O·SiO_(2),FeO·SiO_(2),Ca_(3)Fe_(2)Si_(3)O_(12),CaAl_(2)SiO_6 and CaFe(SiO_(3))_(2).

关键词： Red mud Scandium Iron Deep reduction roasting Magnetic separation Rare earths

职业教育数字化教材建设的具身转向：理论逻辑、现实障碍与实践进路

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教育与职业 2025年第1期 31-38页

作者：韦妙吴泽宇湖北工业大学职业技术师范学院湖北工业大学湖北职业教育发展研究院

数字化教材建设是我国职业教育面向产业发展新需求，增强自身适应性，推进数字化转型的关键一环。从具身认知理论视角出发，现阶段职业教育数字化教材建设的设计、开发、应用走入了忽视学生身心发展、割裂学生身体认知、脱离学生身体环... 详细信息

数字化教材建设是我国职业教育面向产业发展新需求，增强自身适应性，推进数字化转型的关键一环。从具身认知理论视角出发，现阶段职业教育数字化教材建设的设计、开发、应用走入了忽视学生身心发展、割裂学生身体认知、脱离学生身体环境的“离身”歧途，与职业教育新课标关注身心合一、强调身体参与、回归生活实践情境的具身思想渐行渐远。未来职业教育数字化教材建设必须重新认识“身体”的认知论意义，在教材设计层面树立促进学生身心整全发展的核心理念，在教材开发层面重视推动学生身体认知融合的功能研制，在教材应用层面实现学生身体环境交互的情境构筑。

关键词：职业教育数字化教材建设具身认知理论

Fixed-Time Cluster Consensus for Multi-Agent Systems with Objective Optimization on Directed Networks

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Journal of Systems Science & Complexity 2023年第6期36卷 2325-2343页

作者： DUAN Suna YU Zhiyong JIANG Haijun OUYANG deqiang College of Mathematics and System Sciences Xinjiang UniversityUrumqi830017China Department of Mathematics The University of Hong KongHong Kong999077China

This paper studies the cluster consensus of multi-agent systems(MASs)with objective optimization on directed and detail balanced networks,in which the global optimization objective function is a linear combination of local objective functions of all ***,a directed and detail balanced network is constructed that depends on the weights of the global objective function,and two kinds of novel continuous-time optimization algorithms are proposed based on time-invariant and timevarying objective ***,by using fixed-time stability theory and convex optimization theory,some sufficient conditions are obtained to ensure that all agents'states reach cluster consensus within a fixed-time,and asymptotically converge to the optimal solution of the global objective ***,two examples are presented to show the efficacy of the theoretical results.

关键词： Cluster consensus directed and detail balanced network multi-agent systems(MASs) objective optimization

High-voltage Ride Through Strategy for DFIG Considering Converter Blocking of HVDC System

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Journal of Modern Power Systems and Clean Energy 2020年第3期8卷 491-498页

作者： Changping Zhou Zhen Wang Ping Ju deqiang Gan College of Electrical Engineering Zhejiang UniversityHangzhou 310027China

This paper presents a P-Q coordination based highvoltage ride through(HVRT) control strategy for doubly fed induction generators(DFIGs) based on a combined Q-V control and P-V de-loading control. The active/reactive power injection effect of DFIG on transient overvoltage is firstly analyzed and the reactive power capacity evaluation of DFIG considering its de-loading operation is then conducted. In the proposed strategy, the reactive power limit of DFIG can be flexibly extended during the transient process in coordination with its active power adjustment. As a result, the transient overvoltage caused by DC bipolar block can be effectively suppressed. Moreover, key outer loop parameters such as Q-V control coefficient and deloading coefficient can be determined based on the voltage level of point of common coupling(PCC) and the available power capacity of DFIG. Finally, case studies based on MATLAB/Simulink simulation are used to verify the effectiveness of the proposed control strategy.

关键词： Active power de-loading control high-voltage ride through(HVRT) inductive power absorption transient overvoltage