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Influence of different pre-cooling methods on the postharvest storage of‘Kyoho’grapes(Vitis labrusca×vinifera‘Kyoho’)

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Food Quality and Safety 2024年第4期8卷 794-804页

作者： Shaoyu Tao Jinfeng Wang Jing Xie College of Food Science and Technology Shanghai Ocean UniversityShanghaiChina National Experimental Teaching Demonstration Center for Food Science and Engineering Shanghai Ocean UniversityShanghaiChina Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation ShanghaiChina

Various pre-cooling methods for‘Kyoho’grapes were selected,such as forced-air pre-cooling(FAPC),vacuum pre-cooling,natural convection pre-cooling(NCPC),electrolyzed water pre-cooling,cold water pre-cooling,and fluid ice *** aim of this study was to determine the most suitable pre-cooling method for *** storage temperature of grapes was(4±0.5)℃ with a relative humidity of 85%,and physiological parameters were measured every 5 *** pre-cooling methods,except for NCPC,were able to complete the pre-cooling process within 20 ***,water and ice cooling methods were not suitable for pre-cooling grapes,probably due to microbial growth and damage to cellular *** contrast,three groups of air pre-cooling methods were more effective in preserving freshness,the best of which was *** was found that FAPC inhibited grape weight loss,moisture loss,respiration rate,total viable count,malondialdehyde,and relative electrolyte leakage,while stimulating the activities of superoxide dismutase and phenylalanine *** also suppressed the activity of polyphenol ***,in the FAPC group,optimal hardness,titratable acidity,and vitamin C content were *** all the tested methods,FAPC demonstrated better efficacy in delaying the softening and senescence of‘Kyoho’grapes,thereby preserving fruit quality and nutritional content.

关键词： ‘Kyoho’grapes pre-cooling method forced-air pre-cooling postharvest quality

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Monte Carlo Simulation-Based Robust Workflow Scheduling for Spot Instances in Cloud Environments

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Tsinghua science and technology 2024年第1期29卷 112-126页

作者： Quanwang Wu Jianzhao Fang Jie Zeng Junhao Wen Fengji Luo College of Computer Science Chongqing UniversityChongqing 400044China National Experimental Teaching Demonstration Center Chongqing UniversityChongqing 400044China College of Big Data and Software Engineering Chongqing UniversityChongqing 400044China School of Civil Engineering The University of SydneySydney 2006Australia

When deploying workflows in cloud environments,the use of Spot Instances(SIs)is intriguing as they are much cheaper than on-demand ***,Sls are volatile and may be revoked at any time,which results in a more challenging scheduling problem involving execution interruption and hence hinders the successful handling of conventional cloud workflow scheduling *** some scheduling methods for Sls have been proposed,most of them are no more applicable to the latest Sls,as they have evolved by eliminating bidding and simplifying the pricing *** study focuses on how to minimize the execution cost with a deadline constraint when deploying a workflow on volatile Sls in cloud *** on Monte Carlo simulation and list scheduling,a stochastic scheduling method called MCLS is devised to optimize a utility function introduced for this *** the Monte Carlo simulation framework,MCLS employs sampled task execution time to build solutions via deadline distribution and list scheduling,and then returns the most robust solution from all the candidates with a specific evaluation mechanism and selection *** results show that the performance of MCLS is more competitive comparedwithtraditionalalgorithms.

关键词： constrained optimization Monte Carlo simulation robustness Spot Instances(Sls) workflow scheduling

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Development and characterization of mycelium bio-composites by utilization of different agricultural residual byproducts

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Journal of Bioresources and Bioproducts 2023年第1期8卷 78-89页

作者： Liucheng Peng Jing Yi Xinyu Yang Jing Xie Chenwei Chen College of Food Science and Technology Shanghai Ocean UniversityShanghai 201306China Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving EvaluationShanghai 201306China National Experimental Teaching Demonstration Center for Food Science and Engineering(Shanghai Ocean University) Shangha 201306China

Mycelium bio-composites was developed by incubating Pleurotus ostreatus fungi on different sub-strates from agricultural residual byproducts,including rice straw,bagasse,coir-pith,sawdust,and corn *** scanning electron microscope(SEM)results showed that the hypha of com-posite derived from bagasse was the densest,and the diameter of hypha was the biggest(0.77μm),which was presumably due to the existence of cellulose in bagasse in the form of dextran and *** maximum and minimum compression strength for sawdust substrate and corn straw substrate were 456.70 and 270.31 kPa,*** flexural strength for bagasse sub-strate and rice straw substrate were 0.54 and 0.16 MPa,*** two composites derived from rice straw and bagasse exhibited higher hydrophobic properties than *** comparison,mycelium bio-composite derived from bagasse showed the best comprehensive *** for a little worse anti-creep ability and waterproof performance,other properties of mycelium bio-composites could be comparable to commercially expanded polystyrene(EPS)packaging *** from this study,mycelium material provided a good way to use agricultural residual byproducts and could be a good alternative to non-biodegradable materials for packaging appli-cations.

关键词： Mycelium Mycelium bio-composites Pleurotus ostreatus fungi Agricultural residual byproducts Mechanical property

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A Weighted Gauss-Seidel Iterative Algorithm with Fast Convergence 3

A Weighted Gauss-Seidel Iterative Algorithm with Fast Conver...

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3rd International Symposium on computer technology and Information science, ISCTIS 2023

作者： Shen, Dong Chen, Li Li, Qiang Chen, Tong Zhao, Fengfeng Lanzhou Jiaotong University School of Electronic and Information Engineering Lanzhou China Lanzhou Jiaotong University National Experimental Teaching Demonstration Centre for Computer Science and Technology Lanzhou China

ISBN: (纸本)9798350325386

Unacceptable amounts of computation can be generated in massive multiple-input multiple-output (MIMO) systems with minimum mean squared error (MMSE) detection at the received side. A weighted Gauss-Seidel iterative algorithm with fast convergence is launched. The proposed algorithm uses a mixture of Conjugate Gradient and Jacobi iterations to select the optimal search direction. Then weighting factor is used to accelerate the traditional Gauss-Seidel iterative algorithm. The results show that the detection capability of the scheme has been improved. The theoretical analysis verifies that the proposed algorithm has a lower computational complexity compared to the MMSE algorithm. After simulation analysis, the recommended algorithm can gain better convergence speed and BER function with fewer iterations. If user antennas setting values is similar to base station antennas, the proposed algorithm is significantly better. © 2023 IEEE.

关键词： Antennas

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Optimization of teaching Evaluation Methods for Comprehensive Practice Courses in Mechatronic Engineering Based on GMM Algorithm 13

Optimization of Teaching Evaluation Methods for Comprehensiv...

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13th IEEE International Conference on Engineering Education, ICEED 2024

作者： Jiang, Jin-Gang Xue, Zhong-Hao Dai, Ye Bao, Yu-Dong Tang, De-Dong Du, Hai-Yan 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 China

ISBN: (纸本)9798350367416

Aiming at the problems existing in the teaching evaluation method of the comprehensive practice course of Mechatronic engineering based on the concept of OBE engineering education, using the GMM algorithm for clustering, relying on the provincial higher education teaching reform project, optimizing the teaching evaluation method of the course, so as to improve the OBE teaching mode of the 'comprehensive practice' course with a multilevel and diversified teaching evaluation system, to cultivate the students' ability to apply knowledge comprehensively and their ability to engage in engineering practice and their sense of innovation, and to satisfy the new requirements of 'New Engineering' and 'Made in China 2025' for the electromechanical majors and to promote the enhancement of the quality of the personnel training for the Mechatronic engineering majors. © 2024 IEEE.

关键词： Personnel training

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Design and Implementation of Virtual Reality Experiment Project of Integrated Circuit Routing Algorithm 18th

Design and Implementation of Virtual Reality Experiment Proj...

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18th International Conference on computer science and Education, ICCSE 2023

作者： Lu, Zeping Liu, Genggeng Ye, Fuling Guo, Wenzhong College of Computer and Data Science Fuzhou University Fuzhou China National Demonstration Center for Experimental Network Information Security and Computer Technology Education Fuzhou University Fuzhou China

ISBN: (纸本)9789819707904

Given the lack of experimental teaching platforms and tools for integrated circuit (IC) related courses, this paper conducts research on the construction and teaching reform of IC series courses, and transforms the scientific research achievements and academic competition results of Fujian-Taiwan cooperation into virtual reality experimental cases focused on IC layout and routing. Practice shows that transforming the results of scientific research and competition into experiments can stimulate students’ enthusiasm for scientific research and academic competitions in the field of IC, and cultivate students’ abilities to solve problems of IC routing design. Moreover, the time for achievement transformation is effectively shortened, and the circular development of scientific research, subject competition, and teaching is achieved. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Routing algorithms

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Effect of gum tragacanth-sodium alginate coatings incorporated with epigallocatechin gallate on the quality and shelf life of large yellow croaker(Larimichthys crocea)during superchilling storage

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Food Quality and Safety 2024年第3期8卷 577-588页

作者： Zhilong Xu Juxin Pei Jun Mei Huijie Yu Siyuan Chu Jing Xie College of Food Science and Technology Shanghai Ocean UniversityShanghaiChina National Experimental Teaching Demonstration Center for Food Science and Engineering Shanghai Ocean UniversityShanghaiChina Shanghai Engineering Research Center of Aquatic Product Processing and Preservation ShanghaiChina Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation ShanghaiChina

The effect of gum tragacanth(GT)and sodium alginate(SA)active coatings incorporated with epigallocatechin gallate(EGCG;0.16%,0.32%,and 0.64%,respectively)on the quality of large yellow croaker fillets was evaluated during superchilling storage at–3˚C for 42 *** results revealed that the GT-SA-EGCG active coatings delayed microbial spoilage by reducing the total viable counts of Pseudomonas *** psychrophile bacteria and retarded the degradation of the physical properties of water-holding capacity,cooking loss,color,odor and ***-SA-EGCG coatings could also maintain fillet freshness by maintaining lower total volatile basic nitrogen,K value,and histidine content,inhibiting myofibrillar protein degradation during superchilling *** results suggested that the active coatings embedded with GT-SA-EGCG could be used as a preservative to enhance the quality of large yellow croaker and prolong the shelf life by 7–14 d during superchilling storage at–3˚C.

关键词： Large yellow croaker epigallocatechin gallate active coatings superchilling quality

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Construction of Industry-teaching-Innovation Cases for Robot Training under the Integration of Virtuality and Reality 14

Construction of Industry-Teaching-Innovation Cases for Robot...

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14th International Conference on Educational and Information technology, ICEIT 2025

作者： Jin-Gang, Jiang Jiang-Long, Xiong Ya-Ping, Wang Kai-Rui, Wang Tao, Shen Yudong, Bao 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: (纸本)9798331540883

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. © 2025 IEEE.

关键词： Students

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BIFURCATION ANALYSIS IN A PREDATOR-PREY MODEL WITH AN ALLEE EFFECT AND A DELAYED MECHANISM

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Acta Mathematica Scientia 2023年第3期43卷 1415-1438页

作者：李丹阳刘华张濠天马明叶勇魏玉梅 School of Mathematics and Computer Science Northwest Minzu UniversityLanzhou730000China School of Science Harbin Institute of Technology(Shenzhen)Shenzhen518055China Experimental Teaching Department Northwest Minzu UniversityLanzhou730030China

Regarding delay-induced predator-prey models, much research has been done on delayed destabilization, but whether delays are stabilizing or destabilizing is a subtle issue. In this study, we investigate predator-prey dynamics affected by both delays and the Allee effect. We analyze the consequences of delays in different feedback mechanisms. The existence of a Hopf bifurcation is studied, and we calculate the value of the delay that leads to the Hopf bifurcation. Furthermore, applying the normal form theory and a center manifold theorem, we consider the direction and stability of the Hopf bifurcation. Finally, we present numerical experiments that validate our theoretical analysis. Interestingly, depending on the chosen delay mechanism, we find that delays are not necessarily destabilizing. The Allee effect generally increases the stability of the equilibrium, and when the Allee effect involves a delay term, the stabilization effect is more pronounced.

关键词： delays Allee effect Hopf bifurcation stability

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Ideological and Political Construction of 'Innovation and Entrepreneurship Fundamentals' Course Based on Four Orientations 13

Ideological and Political Construction of 'Innovation and En...

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13th IEEE International Conference on Engineering Education, ICEED 2024

作者： Jiang, Jin-Gang Tan, Yu-Jian Bao, Yu-Dong Wang, Kai-Rui Shen, Tao Dai, Ye Harbin University of Science and Technology National Experimental Teaching Demonstration Center for Mechanical Engineering Experiment and Practice 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: (纸本)9798350367416

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. © 2024 IEEE.

关键词： Curricula

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