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发芽青稞的营养品质及降血压效果

食品与生物技术学报 2023年第7期42卷 44-52页

作者：杜艳梁锋李婷玉周文菊陈正行涂兆鑫杨静樊梅香李娟江南大学粮食发酵与食品生物制造国家工程研究中心江苏无锡214122 青海天佑德科技投资管理集团有限公司青海西宁810016 青海省青稞资源综合利用工程技术研究中心青海西宁810016 江南大学江苏省生物活性制品加工工程技术研究中心江苏无锡214122

作者以发芽前后青稞中β-葡聚糖、γ-氨基丁酸、游离氨基酸、总多酚等营养成分的质量分数以及β-葡聚糖酶、蛋白酶等酶活性为指标,并结合高血压大鼠收缩压、心率等指标的变化情况,研究萌发对青稞营养品质和其降血压效果的影响。结果发现... 详细信息

作者以发芽前后青稞中β-葡聚糖、γ-氨基丁酸、游离氨基酸、总多酚等营养成分的质量分数以及β-葡聚糖酶、蛋白酶等酶活性为指标,并结合高血压大鼠收缩压、心率等指标的变化情况,研究萌发对青稞营养品质和其降血压效果的影响。结果发现,青稞β-葡聚糖、淀粉和蛋白质质量分数随萌发时间延长而降低,γ-氨基丁酸质量分数在萌发48 h达到最高,总多酚、总黄酮质量分数以及β-葡聚糖酶、淀粉酶和蛋白酶的活力随萌发时间延长而增加。总游离氨基酸质量分数尤其是必需氨基酸质量分数经萌发处理后显著升高(P<0.05),表明发芽能提高青稞营养价值。此外,与青稞相比,发芽青稞更利于降低高血压大鼠的收缩压、心率、血管紧张素Ⅱ和血管生成素(P<0.05),表明发芽青稞有更好的缓解高血压作用。

关键词：青稞发芽营养成分辅助降血压

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基于深搜算法的手机外壳刮擦痕迹检测

鲁东大学学报（自然科学版） 2018年第4期34卷 309-313,326页

作者：栾松宇周文举孔清清郭鹏徐宗鑫鲁东大学信息与电气工程学院山东烟台264039

运用形态学滤波算法和自适应二值化算法对手机外壳图像进行预处理,同时提出了一种深搜算法,沿着手机外壳刮痕的方向进行搜索,增加了检测的鲁棒性和敏感性,在具有复杂表面纹理干扰的情况下仍然能够有效地对手机外壳微小刮痕进行检测.经... 详细信息

运用形态学滤波算法和自适应二值化算法对手机外壳图像进行预处理,同时提出了一种深搜算法,沿着手机外壳刮痕的方向进行搜索,增加了检测的鲁棒性和敏感性,在具有复杂表面纹理干扰的情况下仍然能够有效地对手机外壳微小刮痕进行检测.经过实验验证,刮痕检测精度可以达到0. 05 mm,漏检率和轮廓检测缺失概率分别为4. 0%和5. 3%.

关键词：机器视觉刮痕检测系统设计和研究图像处理

Indoor positioning based on tightly coupling of PDR and one single Wi-Fi FTM AP

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Geo-Spatial Information Science 2023年第3期26卷 480-495页

作者： Yuan Wu Ruizhi Chen wenju Fu Wei Li Haitao zhou Guangyi Guo State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing(LIESMARS)Wuhan UniversityWuhanChina

The indoor positioning system is now an important technique as part of the Internet-of-Things(IoT)*** indoor positioning techniques,multiple Wi-Fi Access Points(APs)-based positioning systems have been researched a *** is a lack of research focusing on the scene where only one Wi-Fi AP is *** work proposes a hybrid indoor positioning system that takes advantage of the Fine-Timing Measurements(FTM)technique that is part of the IEEE 802.11mc standard,introduced back in *** system uses one single Wi-Fi FTM AP and takes advantage of the built-in inertial sensors of the smartphone to estimate the device’s *** explore both Loosely Coupled(LC)and Tightly Coupled(TC)integration schemes for the sensors’data *** results show that the proposed methods can achieve an average positioning accuracy of about 1 m without knowing the initial *** with the LC integration method,the median error accuracy of the proposed TC fusion algorithm has improved by more than 52%and 67%,respectively,in the two experiments we set up.

关键词： Indoor positioning Wi-Fi Fine Time Measurement(FTM)/Round Trip Time(RTT) Tightly Coupled(TC)integration Pedestrian Dead Reckoning(PDR) Extended Kalman Filter(EKF)

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基于混合迭代贪婪算法的分布式车间调度研究

自动化仪表 2023年第2期44卷 38-43,47页

作者：杜松霖仵大奎时宗胜陈曦周文举上海大学机电工程与自动化学院上海200444 江苏中天互联科技有限公司江苏南通204550 新疆金风科技股份有限公司新疆乌鲁木齐830026

分布式协同生产已逐渐成为经济全球化和生产国际化背景下的主要生产方式。以总装配时间为优化目标,提出一种混合迭代贪婪(HIG)算法,求解分布式装配阻塞流水车间调度问题(DABFSP)。在HIG算法的初始化阶段,采用问题驱动的构造启发式方法... 详细信息

分布式协同生产已逐渐成为经济全球化和生产国际化背景下的主要生产方式。以总装配时间为优化目标,提出一种混合迭代贪婪(HIG)算法,求解分布式装配阻塞流水车间调度问题(DABFSP)。在HIG算法的初始化阶段,采用问题驱动的构造启发式方法生成初始解。在HIG算法的破坏-重构阶段,采用基于邻域信息的扰动策略更新可行调度序列。在HIG算法的局部搜索阶段,使用基于邻域结构的插入操作进一步更新可行解。以一定概率接收较差调度序列进入下一代,从而避免算法早熟收敛。在试验阶段,选取了以不同工件数、机器数、工厂数和产品数为组合的共计900个问题实例,测试、比较了HIG算法和其他8种先进对比算法的性能。通过统计学分析得出结论:在求解DABFSP时,所提出的HIG算法具有显著的优势。

关键词：分布式协同生产分布式车间调度阻塞约束装配过程混合迭代贪婪算法

LEO navigation augmentation constellation design with the multi-objective optimization approaches

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Chinese Journal of Aeronautics 2021年第4期34卷 265-278页

作者： Yi HAN Lei WANG wenju FU Haitao zhou Tao LI Beizhen XU Ruizhi CHEN State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China Collaborative Innovation Center for Geospatial Technology Wuhan 430079China

Low Earth Orbit(LEO)satellite for navigation augmentation applications can significantly reduce the precise positioning convergence time and attract increasing attention recently.A few LEO Navigation Augmentation(LEO-NA)constellations have been proposed,while corresponding constellation design methodologies have not been systematically *** LEO-NA constellation generally consists of a huge number of LEO satellites and it strives for multiple optimization *** is essentially different from the communication constellation or earth observing constellation design *** this study,we modeled the LEO-NA constellation design problem as a multi-objective optimization problem and solve this problem with the MultiObjective Particle Swarm Optimization(MOPSO)*** objectives are used to strive for the best tradeoff between the augmentation performance and deployment efficiency,namely the Position Dilution of Precision(PDOP),visible LEO satellites and the orbit altitude.A fuzzy set approach is used to select the final constellation from a set of Pareto optimal solutions given by the MOPSO *** evaluate the performance of the optimized constellation,we tested two constellations with 144 and 288 satellites and each constellation has three optimization schemes:the polar constellation,the single-layer constellation and the two-layer *** results indicate that the optimized two-layer constellation achieves the best global coverage and is followed by the single-layer *** MOPSO algorithm can help to improve the constellation design and is suitable for solving the LEO-NA constellation design problem.

关键词： LEO-augmented multi-GNSS LEO constellation design MOPSO Multi-objective optimization Orbit optimization

基于迁移学习的飞机线束模板图纸识别模型研究

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信阳师范学院学报（自然科学版） 2024年第2期37卷 240-245页

作者：周文举朱一丁杨庆华朱喜王长法上海大学机电工程与自动化学院上海200444 中国商飞上海飞机设计研究院上海201210

针对航空电气线路互联系统(EWIS)线束模板图纸在更改时的识别与分类问题,设计了一种基于迁移学习的飞机线束模板图纸内容分类方法。由现有的线束模板图纸建立线束模板图纸元素数据集,选定VGG-16网络作为基础网络进行改进,优化模型结构... 详细信息

针对航空电气线路互联系统(EWIS)线束模板图纸在更改时的识别与分类问题,设计了一种基于迁移学习的飞机线束模板图纸内容分类方法。由现有的线束模板图纸建立线束模板图纸元素数据集,选定VGG-16网络作为基础网络进行改进,优化模型结构与参数。为了解决数据集规模较小并提高模型的识别精度及训练效率的问题,将大规模数据集训练的预训练模型迁移至线束模板图纸元素数据集进行训练,并比较不同迁移学习方式及不同网络结构对模型性能的影响。试验结果表明,微调迁移学习模型具有较高的分类准确度,达到了98.89%。与其他网络相比,该微调迁移学习模型具有更短的训练时长以及更高的识别准确率,具有较好的应用前景。

关键词：航空电气线路互联系统(EWIS) 线束模板图纸卷积神经网络 VGG-16网络迁移学习

Syngas production from chemical looping reforming of ethanol over iron-based oxygen carriers: Theoretical analysis and experimental investigation

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Chinese Journal of Chemical Engineering 2021年第10期34卷 123-131页

作者： Atif Abdalazeez wenju Wang Siddig Abuelgasim School of Energy and Power Engineering Nanjing University of Science and TechnologyNanjing 210094China Department of Mechanical Engineering University of KassalaKassalaSudan

Chemical looping reforming(CLR)is a recent trend for syngas production,which has several merits compared to the conventional *** of the most important issues for CLR is to find low-cost material as oxygen carriers,so iron is a promising *** paper contributes to testing the thermodynamic ability of iron-based oxygen carrier for chemical looping reforming of ethanol(CLRE).Iron thermodynamically investigated in temperature 100–1300℃and excess oxygen number(φ)0–*** was found that the temperature andφhave an apparent effect on the gaseous composition produced from the *** in temperature within the range of 100–1300℃enhanced syngas generated and reduced coke formation and ***,increasedφ,particularly at higher temperatures,had also enhanced syngas production as well as reduced coke ***,increasingφfor values beyond one had decreased syngas and not significantly reduced coke ***,an experimental investigation was carried out in a fixed bed reactor for more in-depth verification of iron ability as an oxygen carrier through using magnetite ore(mainly Fe3O4).It found that the effect of temperature on syngas production was consistent with that calculated thermodynamically,as syngas increased with raising the temperature through the CLRE.

关键词： Syngas Chemical looping reforming Iron oxygen carrier Ethanol Coke formation Thermodynamic analysis

Simulation and evaluation of tomato growth by AquaCrop model under different agricultural waste materials

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International Journal of Agricultural and Biological Engineering 2024年第5期17卷 112-119页

作者： Changquan zhou wenju Zhao Haolin Li Feng Ma Keqian Wu College of Energy and Power Engineering Lanzhou University of TechnologyLanzhou 730050China Key Laboratory of Smart Agriculture Irrigation Equipment Ministry of Agriculture and Rural AffairsLanzhou 730050China College of Civil Engineering Lanzhou University of Information Science and TechnologyLanzhou 730300China College of Environmental Science and Energy Engineering Beijing University of TechnologyBeijing 100124China College of Water Resources and Civil Engineering China Agricultural UniversityBeijing 100083China

This study aimed to enhance the utilization of agricultural waste and identify the most suitable agricultural waste materials for tomato cultivation. It utilized a locally modified substrate labeled as CK, along with five different groups of agricultural waste materials, designated as T1 (organic fertilizer: loessial soil: straw in a ratio of 4:5:1), T2 (organic fertilizer: loessial soil: straw: grains in a ratio of 3:5:1:1), T3 (organic fertilizer: loessial soil: straw: grains in a ratio of 2:5:1:2), T4 (organic fertilizer:loessial soil:straw:grains in a ratio of 1:5:1:3), and T5 ( loessial soil:straw:grains in a ratio of 5:1:4), the AquaCrop model was employed to validate soil water content and tomato growth and yield under these treatments. Furthermore, a multi-objective genetic algorithm was employed to determine the optimal agricultural waste materials that would ensure maximum tomato yield, water use efficiency (WUE), partial factor productivity of fertilizer (PFP) and sugar-acid ratio. The results indicated that the AquaCrop model reasonably simulated volumetric soil water content, tomato canopy cover, and biomass, with root mean square error (RMSE) ranges of 20.0-69.4 mm, 15.2%-25.1%, and 1.093-3.469 t/hm2, respectively. The CK group exhibited an R-squared (R2) value of 0.63 for volumetric soil water contents, while the ratio scenarios showed R2 values exceeding 0.80. The multi-objective genetic optimization algorithm identified T5 as the optimal ratio scenario, resulting in maximum tomato yield, WUE, PFP, and quality. This study offers a theoretical foundation for the efficient utilization of agricultural wastes and the production of high-quality fruits and vegetables.

关键词： agricultural waste materials AquaCrop model NSGA-II algorithm tomato quality

Auxiliary Equations Approach for the Stochastic Unsteady Navier-Stokes Equations with Additive Random Noise

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Numerical Mathematics(Theory,Methods and Applications) 2020年第1期13卷 1-26页

作者： wenju Zhao Max Gunzburger Department of Mathematics Southern University of Science and TechnologyShenzhenGuangdong 518055China Department of Scientific Computing Florida State UniversityTallahasseeFL 32304USA

This paper presents a Martingale regularization method for the stochas-tic Navier–Stokes equations with additive *** original system is split into two equivalent parts,the linear stochastic Stokes equations with Martingale solution and the stochastic modified Navier–Stokes equations with relatively-higher ***,a fractional Laplace operator is introduced to regularize the noise *** stability and convergence of numerical scheme for the pathwise modified Navier–Stokes equations are *** comparisons of non-regularized and reg-ularized noises for the Navier–Stokes system are numerically presented to further demonstrate the efficiency of our numerical scheme.

关键词： Stochastic Navier-Stokes equations Martingale regularization method Galerkin finite element method white noise