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International Conference on Educational and Information technology (ICEIT)

作者： Jiang Jin-gang Xiong Jiang-long Wang Ya-ping Wang Kai-rui Shen Tao Bao Yudong National Experimental Teaching Demonstration Center for Mechanical Engineering Experiment and Practice Harbin University of Science and Technology Harbin China School of Mechanical and Power Engineering Harbin University of Science and Technology Harbin China School of Measurement and Communication Engineering Harbin University of Science and Technology Harbin China

ISBN: (数字)9798331540883

ISBN: (纸本)9798331540890

Aiming to address the current problems in robot training teaching, this paper focuses on the construction of industry-teaching-innovation cases for robot training under the integration of virtuality and reality, such as the disconnection between training content and industry practice, delays in digital transformation, and the lack of training resources. Relying on the intelligent manufacturing industry academy (IMIA), the teaching model integrates virtual simulation training with practical operation to enhance students' practical skills and innovative abilities. The study introduces complex technical challenges faced by enterprises in production, combining a dual-mentor system and a collaborative resource-sharing mechanism between school and enterprises. This ensures that students can master key skills required by enterprises during training, while innovation and entrepreneurship education is integrated throughout the whole training process to stimulate students' creative thinking and entrepreneurial mindset.

关键词： Training Manufacturing industries Technological innovation Service robots Digital transformation Entrepreneurship Production Delays Manufacturing Problem-solving

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Exploration of the evolution and production of volatile compounds in grouper (Epinephelus coioides) during cold storage

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Food Bioscience 2023年第2期52卷 1222-1230页

作者： Yuanming Chu Zhaoyang Ding Jinfeng Wang Jing Xie College of Food Science&Technology Shanghai Ocean UniversityShanghaiChina Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation Shanghai Ocean UniversityShanghaiChina National Experimental Teaching Demonstration Center for Food Science and Engineering Shanghai Ocean UniversityShanghaiChina Shanghai Engineering Research Center of Aquatic Product Processing&Preservation Shanghai Ocean UniversityShanghaiChina Collaborative Innovation Center of Seafood Deep Processing Ministry of EducationDalian116034China

Microbial growth,protein degradation and lipid oxidation played an important role in the flavor of grouper during cold *** order to study the relationship between volatile compounds(VOCs)and microorganisms,proteins and lipids in grouper during cold storage,headspace-solid phase microextraction(HS-SPME)combined with gas chromatography-mass spectrometry(GC-MS)was used to analyze the VOCs of grouper during cold *** total viable counts(TVC),Pseudomonas count,total sulfhydryl(SH)content,carbonyl content,TBARs,total free fatty acids(FFAs)content and free amino acids(FAAs)were *** results showed that the indicators related to microorganisms,proteins and lipids deteriorated to different degrees during cold storage.A total of 67 VOCs were identified in the *** screening,10 key VOCs were found,8 of which had a negative odor and were highly correlated with the deterioration of grouper *** further correlation analysis,the source of key VOCs was basically determined,and the main factors affecting VOCs production were determined to be microbial growth,followed by protein degradation and lipid *** laid a foundation for regulating the flavor formation of grouper during cold storage from the source in the future.

关键词： Grouper HS-SPME-GC-MS Volatile components Quality Cold storage

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Study on the influencing mechanisms of obstacles on dust lifted by shock waves after tunnel blasting

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science of the Total Environment 2025年 975卷 179305页

作者： Hu, Jing Li, Angui Cui, Haihang Chen, Li Guo, Jinnan School of Building Service Science and Engineering Xi'an University of Architecture and Technology Xi'an710055 China National Experimental Teaching Demonstration Center for Environment Specialty School of Environment and Municipal Engineering Xi'an University of Architecture and Technology Xi'an710055 China Xi'an710055 China

Understanding the influence mechanisms by which obstacles affect the dust lifting process resulting from shock waves after tunnel blasting requires clarifying the influence of obstacles on the spatiotemporal evolution characteristics of shock waves and the interaction mechanisms between obstacles and dust layers at different spatial positions. Using compressible flow numerical simulations, a gas-solid two-phase flow model was established to simulate shock wave evolution influenced by obstacles and their interactions with the dust layer at different tunnel locations. Compared with conditions without obstacles, when the dust layer is situated upstream of the obstacle, the shock wave reflection and the obstruction by the obstacle create an upstream enhanced dust lift (UEDL) mechanism. When the dust layer is located in the slanted reflection zone behind the obstacle, complex vortex motions and low-pressure areas lead to a proximal backflow dust suppression (PBDS) mechanism. When the dust layer is located in the Mach reflection zone downstream of the obstacle, multiple reflections result in a distal attenuation dust suppression (DADS) mechanism. This study identifies three mechanisms by which obstacles influence shock wave-induced dust lifting at varying spatiotemporal locations, providing a theoretical basis for dust suppression research post-tunnel blasting with significant practical applications. © 2025 Elsevier B.V.

关键词： Compressible flow

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Fusion of OBE Framework and RF Algorithm in Enhancing the teaching Evaluation System for Comprehensive Practical Course

Fusion of OBE Framework and RF Algorithm in Enhancing the Te...

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Information science and Education (ICISE-IE), International Conference on

作者： Jingang Jiang Zhonghao Xue Dedong Tang Yudong Bao Ye Dai Shi Wu School of Mechanical and Power Engineering Harbin University of Science and Technology Harbin China National Experimental Teaching Demonstration Center for Mechanical Engineering Experiment and Practice Harbin University of Science and Technology Harbin

In response to the issues within the traditional teaching evaluation system for comprehensive practical courses, this study constructed a comprehensive teaching evaluation system based on the Outcome-Based Education (OBE) concept. Subsequently, the study introduced the Random Forest algorithm to conduct an in-depth analysis of the weightings of various indicators within the existing evaluation system. Leveraging the relative importance provided by the Random Forest method, it precisely optimized the weights assigned to the four key components. Ultimately, a rational evaluation system was successfully established, capable of accurately assessing students' learning outcomes and practical abilities in the comprehensive practical course, ensuring the accuracy and fairness of the evaluation.

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Ideological and Political Construction of “Innovation and Entrepreneurship Fundamentals” Course Based on Four Orientations

Ideological and Political Construction of “Innovation and E...

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International Conference on Engineering Education (ICEED)

作者： Jin-gang Jiang Yu-jian Tan Yu-dong Bao Kai-rui Wang Tao Shen Ye Dai National Experimental Teaching Demonstration Center for Mechanical Engineering Experiment and Practice Harbin University of Science and Technology Harbin China School of Mechanical and Power Engineering Harbin University of Science and Technology Harbin China School of Measurement and Communication Engineering Harbin University of Science and Technology Harbin China

ISBN: (数字)9798350367416

ISBN: (纸本)9798350367423

Innovation and Entrepreneurship Fundamentals, as a crucial mandatory component of social practice, plays a significant role in fostering students' innovative consciousness and entrepreneurial capabilities. Addressing the deficiency in integrating ideological and political elements within traditional curricula, a novel pedagogical approach has been proposed, one that is grounded in the “Four Orientations” and characterized by an immersive, distinctive ideological and political curriculum model. This model ingeniously weaves distinctive ideological and political components into the foundational course of innovation and entrepreneurship. An eclectic course evaluation framework has been established, which integrates the assessment of ideological and political content with the curriculum's subject matter, thereby harmonizing the evaluation criteria across various assessment phases. The construction of ideological and political courses more effectively integrates ideological and political education into professional instruction, achieving dual objectives of knowledge dissemination and value shaping. This approach aims to cultivate a new generation of youth endowed with an innovative spirit and a sense of social responsibility for the benefit of the nation and society.

关键词： Technological innovation Entrepreneurship Solids Engineering education

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Application of Flipped Classroom teaching Method in the Single-Chip Microcomputer Course

Application of Flipped Classroom Teaching Method in the Sing...

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International Conference on Educational and Information technology (ICEIT)

作者： Jiang Jin-gang Zhang Jia-wei Du Hai-yan Wang Kai-rui Dai Ye Tang De-dong National Experimental Teaching Demonstration Center for Mechanical Engineering Experiment and Practice Harbin University of Science and Technology Harbin China School of Mechanical and Power Engineering Harbin University of Science and Technology Harbin China Robotics & Its Engineering Research Center Harbin University of Science and Technology Harbin China

ISBN: (数字)9798350372663

ISBN: (纸本)9798350372670

The principle and application of single-chip microcomputer is a strong theoretical and practical course. By the analysis on traditional teaching mode of principle and application of single-chip microcomputer, the current problems existing in the single-chip microcomputer teaching process is obtained. The current teaching methods are unfavorable to the cultivation of learner's personality and innovative talents. Flipped classroom can transform the students' passive learning to active learning, so it is completely necessary and urgent that flipped classroom method apply and practice in the teaching process of principle and application of single-chip microcomputer. Two different types flipped classroom teaching model of the single-chip microcomputer based on teaching mode of the single-chip microcomputer based on micro-lesson is designed. The teaching mode design of the single-chip microcomputer based on flipped classroom is realized. Some achievements are obtained. Application of flipped classroom teaching method in the single-chip microcomputer course plays a key role for improving engineering students' practical operation and technical innovation ability.

关键词： Technological innovation Electronic learning Education Transforms Microcomputers Software Online services

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Research of Virtual Simulation Experiment Course Resource Intelligent Information System Construction 2

Research of Virtual Simulation Experiment Course Resource In...

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2nd IEEE International Conference on Power, Electronics and computer Applications, ICPECA 2022

作者： Wang, Yangping Dang, Jianwu Yong, Jiu Wang, Wenrun Yue, Biao Jin, Fangrui Computer Science and Technology Experimental Teaching Demonstration Center of National Lanzhou Jiaotong University National Virtual Simulation Experiment Teaching Center of Railway Traffic Information and Control Lanzhou Jiaotong University Gansu Prov. Eng. Research Center for Artificial Intelligence and Graphics and Image Processing Lanzhou730070 China National Virtual Simulation Experiment Teaching Center of Railway Traffic Information and Control Lanzhou Jiaotong University College of Intelligence and Computing Tianjin University Computer Science and Technology Experimental Teaching Demonstration Center of National Lanzhou Jiaotong University Gansu Prov. Eng. Research Center for Artificial Intelligence and Graphics and Image Processing Lanzhou730070 China College of Electronic and Information Engineering Lanzhou Jiaotong University Gansu Provincial Engineering Research Center for Artificial Intelligence and Graphics and Image Processing Lanzhou730070 China

ISBN: (纸本)9781665442763

In order to enable the construction of virtual simulation experiment resources in colleges and universities to keep up with the development of professional technology, this paper proposes to build a 'diversified virtual simulation experiment teaching resource construction system' through exploration and research. With the help of virtual reality, AR, panoramic roaming, video and other technologies, it provides a unified development framework, development documents and case templates for professional teachers to independently develop virtual simulation experiment teaching resources in line with undergraduate teaching, and helps teachers quickly build virtual simulation experiment resources in accordance with unified standards. It effectively solves the problems that it is difficult for college teachers to independently develop virtual simulation courseware and the technology is not unified. © 2022 IEEE.

关键词： Virtual reality

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Towards Emotion-awareness in Programming Education with Behavior-based Emotion Estimation

Towards Emotion-awareness in Programming Education with Beha...

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IEEE Annual International computer Software and Applications Conference (COMPSAC)

作者： Yuqian Zhuang Liang Wang Zhiwen Zheng Hao Hu Haijun Wu Xianping Tao State Key Laboratory for Novel Software Technology Nanjing University Nanjing China National Experimental Teaching Demonstration Center of Computer Science Technology and Software Engineering Nanjing China

ISBN: (数字)9781665488105

ISBN: (纸本)9781665488112

Existing studies in both psychology and software engineering have shown the importance of emotions in complex learning and programming tasks. For students who are learning to program, rich emotions are experienced which can provide valuable feedback to their teachers. To accurately model stu-dents' emotions, this paper adopts the well-recognized model of emotions during complex learning that involves four states: engaged, confused, frustrated, and bored. To perform continuous estimation of students' emotions in a non-intrusive manner, this paper proposes to track students' programming behavior and estimate their corresponding emotional states. Compare to the existing approaches on acquiring the students' emotional states with self-reports or bio-sensors, the proposed approach is more feasible in conducting real-world, and large-scale studies for not requiring extensive human interventions or additional devices. Evaluated using data collected from a real-world course project, the proposed approach is showed to be promising for achieving an estimation accuracy of 72.06 % for the above four emotional states. As an enabling technology, the proposed is potentially useful in supporting many applications and improve the quality of programming education in computer science.

关键词： Emotion recognition Computational modeling Education Estimation Psychology Software Mice

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Porous hybrid scaffold strategy for the realization of lightweight,highly efficient microwave absorbing materials

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Journal of Materials science & technology 2022年第34期129卷 215-222页

作者： Meng Zhu Yuting Lei Heng Wu Luo Kong Hailong Xu Xuanxuan Yan Yongjian Xu Lei Dai Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development Key Laboratory of Paper Based Functional MaterialsChina National Light IndustryNational Demonstration Center for Experimental Light Chemistry Engineering EducationShaanxi University of Science and TechnologyXi’an 710021China School of Engineering Computer and Mathematics SciencesAuckland University of Technology55 Wellesley Street EastAucklandNew Zealand School of Materials Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021China Laboratory for Advanced Interfacial Materials and Devices Research Center for Smart Wearable TechnologyInstitute of Textiles and Clothingthe Hong Kong Polytechnic UniversityHong Kong SAR 999077China

Exploring an advanced and efficient electromagnetic(EM) wave absorbing material by improving dielectric loss capacity and adjusting impendence matching is crucial yet challenging. Herein, the bacterial cellulose(BC) derived carbon aerogel(CA) with a robust nanofibrous network was used as a conductive loss scaffold to dissipate EM waves effectively, and the Zn O microparticles with excellent dielectric properties and low electrical conductivity were decorated on the scaffold to adjust dielectric parameters and impedance matching adequately. By using different zinc precursors, the tunable size and morphologies of Zn O crystals were obtained due to the growth rate of different crystallographic, including flowerlike, nanorod like, and cauliflower-like morphologies, which is beneficial to strong multiple reflections,intensive interfacial polarization, better impendence matching, as well as excellent maintenance of the hierarchical structure. Owing to the appropriate impendence matching and the considerable EM wave dissipation, the CA@ZnO composites achieve a superior EM absorbing performance with a broad effective absorbing bandwidth(whole X band) and a minimum reflection coefficient(-53.3 d B). This work paves a new way for developing lightweight and highly efficient EM absorbing materials comprising the carbon scaffold and semiconductor microparticles.

关键词： Carbon scaffold ZnO microparticles Morphologies Impedance matching Microwave absorption

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Effects of ECAP Extrusion on the Microstructure, Mechanical Properties and Biodegradability of Mg–2Zn–xGd–0.5Zr Alloys

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Acta Metallurgica Sinica(English Letters) 2021年第2期34卷 205-216页

作者： Jun-Xiu Chen Xiang-Ying Zhu Li-Li Tan Ke Yang Xu-Ping Su Key Laboratory of Materials Surface Science and Technology of Jiangsu Province Changzhou UniversityChangzhou 213164China Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou UniversityChangzhou 213164China National Experimental Teaching Demonstration Center of Materials Science and Engineering Changzhou UniversityChangzhou 213164China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China

Effects of equal channel angular pressing(ECAP)extrusion on the microstructure,mechanical properties and biodegradability of Mg–2Zn–xGd–0.5Zr(x=0,0.5,1,2 wt%)alloys were studied in this *** analysis,tensile test at ambient temperature,immersion test and electrochemical test in Hank’s solution were carried *** results showed that Gd could further enhance the grain refinement during the ECAP *** Gd addition and ECAP extrusion could improve the mechanical properties of the alloys,and the extrusion played the dominant *** addition of Gd(0.5–1 wt%)could obviously enhance the corrosion resistance of the *** some extent,ECAP extrusion improved the corrosion resistance of the alloys due to the change of second phases distribution and the refinement of *** increase in extrusion pass was detrimental to the improvement of the corrosion resistance as a result of increment of the grain boundaries.

关键词： Mg alloys Gd addition ECAP extrusion pass Mechanical property Biodegradable behavior

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