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An indoor fusion navigation algorithm using HV-derivative dynamic time warping and the chicken particle flter

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Satellite Navigation 2022年第1期3卷 167-184,I0005页

作者： Jian Chen Shaojing Song yumei gong Shanxin Zhang School of Computer and Information Engineering Shanghai Polytechnic UniversityShanghai 200000China School of Computer and Information Engineering Shandong Normal UniversityJinanChina

The use of dead reckoning and fngerprint matching for navigation is a widespread technical ***,fngerprint mismatching and low fusion accuracy are prevalent issues in indoor navigation *** work presents an improved dynamic time warping and a chicken particle flter to handle these two *** generate the Horizontal and Vertical(HV)fngerprint,the pitch and roll are employed instead of the original fngerprint intensity to extract the horizontal and vertical components of the magnetic feld *** dynamic time warping employs the HV fngerprint in its derivative form,which receives higher-level features because of the consideration of fngerprint shape *** Swarm Optimization(CSO)is used to enhance particle weights,which minimizes position error to tackle the particle impoverishment problem for a fusion navigation *** results of the experiments suggest that the enhanced algorithm can improve indoor navigation accuracy signifcantly.

关键词： An indoor fusion navigation algorithm HV-derivative dynamic time warping Chicken particle flter

Cross-Modal Interaction and Integration Through Stimulus-Specific Adaptation in the Thalamic Reticular Nucleus of Rats

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Neuroscience Bulletin 2022年第7期38卷 785-795页

作者： yumei gong Yuying Zhai Xinyu Du Peirun Song Haoxuan Xu Qichen Zhang Xiongjie Yu Department of Neurology of the Second Affiliated Hospital of Zhejiang University School of MedicineInterdisciplinary Institute of Neuroscience and TechnologyCollege of Biomedical Engineering and Instrument ScienceZhejiang UniversityHangzhou 310029China Key Laboratory for Biomedical Engineering of Ministry of Education Zhejiang UniversityHangzhou 310027China Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal Zhejiang UniversityHangzhou 310027China

Stimulus-specific adaptation(SSA),defined as a decrease in responses to a common stimulus that only partially generalizes to other rare stimuli,is a widespread phenomenon in the brain that is believed to be related to novelty *** cross-modal sensory processing is also a widespread phenomenon,the interaction between the two phenomena is not well *** this study,the thalamic reticular nucleus(TRN),which is regarded as a hub of the attentional system that contains multi-modal neurons,was *** results showed that SSA existed in an interactive oddball stimulation,which mimics stimulation changes from one modality to *** the bimodal integration,SSA to bimodal stimulation was stronger than to visual stimulation alone but similar to auditory stimulation alone,which indicated a limited integrative ***,the present results provide evidence for independent cross-modal processing in bimodal TRN neurons.

关键词： Stimulus-specific adaptation Regularity:Novelty detection Thalamic reticular nucleus Crossmodal

基于CFD数值模拟的汽车中冷器流动均匀性研究

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小型内燃机与车辆技术 2024年第1期53卷 11-16页

作者：张辉王鹏超徐慧龚玉梅陈基岩台州职业技术学院汽车学院浙江台州318000 台州职业技术学院汽车关键零部件精益智造研究所浙江银轮机械股份有限公司

针对汽车中冷器内流道气体流动均匀性差的问题,提出了一种在中冷器气室安装导流板的中冷器结构优化方案。基于CFD数值模拟,对中冷器内部气体质量流量分布、速度场和压力场进行了分析,通过风洞试验验证了仿真模型的有效性。在此基础上,... 详细信息

针对汽车中冷器内流道气体流动均匀性差的问题,提出了一种在中冷器气室安装导流板的中冷器结构优化方案。基于CFD数值模拟,对中冷器内部气体质量流量分布、速度场和压力场进行了分析,通过风洞试验验证了仿真模型的有效性。在此基础上,研究了气室导流板对中冷器内流道气体流动均匀性的影响。研究结果表明:合理设置导流板,中冷器各散热管气体平均质量流量偏差由7.66%减小到3.20%,中冷器许用环境温度提高了0.84℃,气室压力损失减少了37.4%,改善了中冷器内流道气体流动均匀性,提高了散热性能,避免了芯体热应力集中,减少了可靠性失效风险。此中冷器结构优化方案可为中冷器流动均匀性研究提供参考。

关键词：中冷器流动均匀性气室导流板散热性能

General FIR Filter Design with Linear Phase in Passband by Water Cycle Algorithm

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Journal of Computer and Communications 2018年第11期6卷 326-331页

作者： Haijiang Hu Shaojing Song yumei gong College of Engineering Shanghai Polytechnic University Shanghai China

FIR filter is an important type of filter in the field of signal processing because of its inherent stability, simpler structure, and easier implementation on linear phase. WCA is used to solve FIR filter design with low magnitude error and linear phase in passband. This method uses WCA to optimize the filter coefficient based on the low magnitude errors in all frequency domains. Moreover, in the constraint conditions, the least group delay in passband is used for the optimization. The experiments testify this method has good performance on the passband error and group delay error in the passband. Therefore this method is an efficient algorithm for FIR filter optimization which can be used in the digital signal processing widely.

关键词： FIR WCA Linear Phase Optimization

Single-cell transcriptomic analysis reveals transcript enrichment in oxidative phosphorylation,fluid sheer stress,and inflammatory pathways in obesity-related glomerulopathy

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Genes & Diseases 2024年第4期11卷 314-326页

作者： Yinyin Chen Yushun gong Jia Zou Guoli Li Fan Zhang Yiya Yang yumei Liang Wenni Dai Liyu He Hengcheng Lu Department of Nephrology Hunan Provincial People's HospitalThe First Affliated Hospital of Hunan Normal UniversityHunan Clinical Research Center for Chronic Kidney DiseaseChangshaHunan 410000China Department of Nephrology The Second Xiangya Hospital of Central South UniversityHunan Key Laboratory of Kidney Disease and Blood PurificationChangshaHunan 410011China Cardiovascular Research Institute of Jiangxi Province Jiangxi Provincial People's HospitalThe First Affiliated Hospital of Nanchang Medical CollegeNanchangJiangxi 330006China

Obesity-related glomerulopathy(ORG)is an independent risk factor for chronic kid-ney disease and even progression to end-stage renal *** have been undertaken to elucidate the mechanisms underlying the development of ORG and substantial advances have been made in the treatment of ORG,but relatively little is known about cell-specific changes in gene *** define the transcriptomic landscape at single-cell resolution,we analyzed kidney samples from four patients with ORG and three obese control subjects without kidney disease using single-cell RNA *** report for the first time that immune cells,including T cells and B cells,are decreased in ORG *** analysis indicated that SPP1 was significantly up-regulated in T cells and B *** gene is related to inflammation and cell *** of differential gene expression in glomerular cells(endothelial cells,mesangial cells,and podocytes)showed that these cell types were mainly enriched in genes related to oxidative phosphorylation,cell adhesion,thermogenesis,and inflammatory pathways(PI3K-Akt signaling,MAPK signaling).Furthermore,we found that the podocytes of ORG patients were enriched in genes related to the fluid shear stress ***,an evaluation of cell-cell communications revealed that there were interactions between glomerular parietal epithelial cells and other cells in ORG patients,with major interactions between parietal epithelial cells and ***,our identification of molecular events,cell types,and differentially expressed genes may facilitate the development of new preventive or therapeutic approaches for ORG.

关键词： Fluid shear stress Inflammation Obesity-related glomerulopathy Oxidative phosphorylation Single-cell RNA seq

Study on Online Teaching of High Frequency Circuit under COVID-19 Epidemic

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Study on Online Teaching of High Frequency Circuit under COV...

盐浓度与海藻酸钠/磷虾蛋白复合体系性能的相关性

作者： Haijiang Hu Shaojing Song Yu Chai yumei gong College of Engineering Shanghai Polytechnic University

Most schools close their campus for the safety of students and teachers under COVID-19 epidemic. Online teaching is used in most schools and universities widely in spring term 2020. This paper studies on the online teaching method and results in online teaching of high frequency circuit, which is useful for online teaching of electronic engineering. In the online class, we use the discussion as the main method instead of the lecture. Students study the course contents before class. Most students are satisfied with the online teaching method. This online teaching method should be applied in other courses teaching in online university education.

关键词： Online Teaching High Frequency Circuit Electronic Engineering Simulation COVID-19

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高等学校化学学报 2017年第9期38卷 1701-1708页

作者：吴静郭静张森宫玉梅张鸿大连工业大学纺织与材料工程学院大连116034 辽宁省功能纤维及复合材料工程技术中心大连116034

采用湿法纺丝技术制备了海藻酸钠/磷虾蛋白(SA/AKP)复合纤维,通过傅里叶变换红外光谱(FTIR)分析了SA/AKP复合体系的氢键相互作用,用X射线衍射仪、流变仪及SEM研究了盐(NaCl)浓度对复合体系的结晶、流动性和形态结构的影响.结果表明,SA/... 详细信息

采用湿法纺丝技术制备了海藻酸钠/磷虾蛋白(SA/AKP)复合纤维,通过傅里叶变换红外光谱(FTIR)分析了SA/AKP复合体系的氢键相互作用,用X射线衍射仪、流变仪及SEM研究了盐(NaCl)浓度对复合体系的结晶、流动性和形态结构的影响.结果表明,SA/AKP复合体系中存在分子内和分子间氢键,分子间氢键的强度随复合材料中盐浓度的增加而增强.盐浓度的增加导致SA/AKP复合材料的结晶度增加,流动黏度先降低后增加,力学性能先增加后降低.SA/AKP纤维的SEM照片显示结晶的盐与纤维分离,并且复合纤维表面沟槽结构逐渐减少,表面更加致密光滑.AKP在SA/AKP复合体系中呈完全取向状态.

关键词：海藻酸钠/磷虾蛋白复合纤维共混体系湿法纺丝盐(氯化钠)浓度

乙二醇二缩水甘油醚原位交联纤维素-磷虾蛋白复合纤维的结构与性能

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复合材料学报 2020年第5期37卷 1156-1166页

作者：马跃郭静赵秒宫玉梅大连工业大学纺织与材料工程学院大连116034 辽宁省功能纤维及复合材料工程技术中心大连116034

以纤维素(Cell)和南极磷虾蛋白(AKP)为原料,以乙二醇二缩水甘油醚(EGDE)为潜在交联剂,NaOH和尿素水溶液作溶剂,在低温下溶解Cell和AKP后,加入EGDE制备Cell-AKP-EGDE复合纺丝原液,将纺丝原液挤入H2SO4-Na2SO4-H2O构成的凝固浴中,经热拉... 详细信息

以纤维素(Cell)和南极磷虾蛋白(AKP)为原料,以乙二醇二缩水甘油醚(EGDE)为潜在交联剂,NaOH和尿素水溶液作溶剂,在低温下溶解Cell和AKP后,加入EGDE制备Cell-AKP-EGDE复合纺丝原液,将纺丝原液挤入H2SO4-Na2SO4-H2O构成的凝固浴中,经热拉伸定型获得EGDE原位交联的Cell-AKP复合纤维。利用FTIR研究了交联剂EGDE的含量对Cell-AKP复合体系分子间相互作用的影响,采用SEM、XRD、TG等考察了交联剂EGDE的含量与Cell-AKP复合体系的表面形态、结晶性、热稳定性和力学性能的相关性。结果表明:交联剂EGDE含量的不同对Cell-AKP复合纤维的表观黏度、力学性能、结晶性及表面形态等均有影响,且交联剂EGDE含量为3wt%时,Cell-AKP复合纤维的综合性能较好。

关键词：纤维素南极磷虾蛋白交联剂含量复合纤维原位交联

多形貌中空介孔SiO2的可控合成及复合物对Cu2+的吸附还原

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高等学校化学学报 2019年第11期40卷 2412-2418页

作者：张辰吴畅韩伟豪宫玉梅石强大连工业大学纺织与材料工程学院大连116034 中国科学院长春应用化学研究所高分子物理与化学国家重点实验室长春130022

以间苯二酚/甲醛(RF)树脂为软模板,正硅酸乙酯(TEOS)为硅源,十六烷基三甲基溴化铵(CTAB)为制孔剂,采用一锅溶胶-凝胶法制备了多形貌中空介孔二氧化硅微球(HMSM).通过改变甲醛用量调控软模板RF树脂的结构,可以获得一系列不同形貌及结构的... 详细信息

以间苯二酚/甲醛(RF)树脂为软模板,正硅酸乙酯(TEOS)为硅源,十六烷基三甲基溴化铵(CTAB)为制孔剂,采用一锅溶胶-凝胶法制备了多形貌中空介孔二氧化硅微球(HMSM).通过改变甲醛用量调控软模板RF树脂的结构,可以获得一系列不同形貌及结构的HMSM,随着甲醛用量的增加,HMSM结构表现为单层壳空心球、蛋黄壳空心球、双层壳空心球等结构.其中具有蛋黄壳空心球结构的HMSM比表面积可达691 m2/g,孔体积达2. 23cm^3/g,孔径均匀(3. 5nm).以硝酸铈铵为引发剂,在具有蛋黄壳空心球结构的HMSM中引发丙烯腈自由基聚合,并将支链聚丙烯腈上的氰基偕胺肟化,制得HMSM接枝聚偕胺肟(HMSMg-PAO).以100 mg/L的CuCl2溶液为目标溶液,在pH=4. 0时测试合成的HMSM-g-PAO对Cu^2+的吸附效果,发现吸附平衡时Cu^2+吸附量达134 mg/g.

关键词：中空介孔二氧化硅软模板聚偕胺肟 Cu2+吸附