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网络思想政治教育仪式的建构与优化——以“带着国旗去旅行”全民网络活动为例

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山东青年政治学院学报 2024年第4期40卷 33-40页

作者：李敏黄俊伟西华师范大学马克思主义学院四川南充637009

网络思想政治教育仪式的开展已成为信息化时代思想政治教育发展的重要趋势。“带着国旗去旅行”全民网络爱国活动,以生活叙事活化爱国话语,以数字化+仪式营造爱国活动的共联共境,以寓意驱动建构情感共同体,通过创新性的仪式展演流程和... 详细信息

网络思想政治教育仪式的开展已成为信息化时代思想政治教育发展的重要趋势。“带着国旗去旅行”全民网络爱国活动,以生活叙事活化爱国话语,以数字化+仪式营造爱国活动的共联共境,以寓意驱动建构情感共同体,通过创新性的仪式展演流程和数字化仪式展演手段,成功地将爱国情感融入网络空间,引起参与者的强烈共鸣。该活动从仪式符号运用、仪式时空构建、仪式展演形式、仪式传播模式四个方面成功地将教育仪式与互联网相结合,实现了全民网络爱国活动的仪式化建构。为提升网络思想政治教育仪式实效,可从以下方面进一步优化:创新仪式符号话语表现形态、拓展仪式时空、促进仪式教育资源融合共进、扩展仪式传播的多维创新空间。

关键词：网络思想政治教育仪式 “带着国旗去旅行” 运行机理提升策略

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双线圈与单线圈磁脉冲辅助微冲裁对比与分析

塑性工程学报 2024年第8期31卷 20-25页

作者：黄蔚君杨亮黄曾鑫刘大海陶毅晨周恺祝李豪南昌航空大学航空制造工程学院江西南昌330063 南昌航空大学工程训练中心江西南昌330063

为进一步研究磁脉冲辅助微冲裁工艺,提出使用双线圈替代单线圈的磁脉冲辅助微冲裁方法,采用对比试验的方式进行了成形孔宏观效果及冲裁断面质量分析,从而对双线圈与单线圈成形率与冲裁断面质量优劣进行了对比。结果表明,在成形孔的宏观... 详细信息

为进一步研究磁脉冲辅助微冲裁工艺,提出使用双线圈替代单线圈的磁脉冲辅助微冲裁方法,采用对比试验的方式进行了成形孔宏观效果及冲裁断面质量分析,从而对双线圈与单线圈成形率与冲裁断面质量优劣进行了对比。结果表明,在成形孔的宏观效果方面,双线圈的孔成形率远高于单线圈,双线圈的应用提高了磁脉冲辅助微冲裁的能量利用率。单线圈磁脉冲辅助微冲裁的冲裁断面光亮带占比最高仅有15.3%,而双线圈的冲裁断面光亮带占比最高高达59.6%,双线圈冲裁质量远优于单线圈。

关键词：磁脉冲辅助成形微冲裁双线圈断面质量

Effect of Oxygen Partial Pressure on Phase Equilibria and Liquidus in CaO-Al_2O_3-FeO_x System

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Journal of Iron and Steel Research International 2012年第11期19卷 8-12页

作者： WANG Nan huang wei-jun CHEN Shuai-chao CHEN Min School of Materials and Metallurgy Northeastern University Shenyang 110819 Liaoning China

A high temperature equilibration experiment was carried out to investigate the effect of oxygen partial pres- sure on the phase equilibria and liquidus in CaO-Al2O3- FeOx system with the intermediate oxygen partial pressures of 10.13 Pa and 1.01 × 10^-3 Pa. The equilibrated phases and their compositions of the quenched samples were analyzed by using SEM/EPMA （Scanning Electron Microscope/Electron Probe Micro Analysis） and XRD （X Ray Diffraction）. The phase equilibrium results include two cases, the two phase coexistence and the three-phase coexistence in the high Al2O3 region with oxygen partial pressure of either 10.13 Pa or 1.01 × 10^-3 Pa. Effects of oxygen partial pressure and temperature on the liquidus along the primary phase fields of CaO · Al2O3 and CaO · 2Al2O3 were nota hle. With the decrease of oxygen partial pressure, the liquid area expands and the liquidus of CaO · Al2O3 and CaO · 2Al2O3 primary fields moves to the Al2O3-FeOx region. On the other hand, the liquid area of CaO Al2O3-FeOx sys tem extends extremely to the high Al2O3 region with the temperature increasing from 1 400 to 1 500℃, especially at lower oxygen partial pressure. The present experiment results are in good agreement with the calculated ones by FactSage.

关键词： oxygen partial pressure liquidus phase equilibrium CaO-Al2O3 FeOx system

Joint Sample Position Based Noise Filtering and Mean Shift Clustering for Imbalanced Classification Learning

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Tsinghua Science and Technology 2024年第1期29卷 216-231页

作者： Lilong Duan wei Xue jun huang Xiao Zheng School of Computer Science and Technology Anhui University of TechnologyMaanshan 243032China Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefei 230088China

The problem of imbalanced data classification learning has received much *** classification algorithms are susceptible to data skew to favor majority samples and ignore minority *** weighted minority oversampling technique(MWMOTE)is an effective approach to solve this problem,however,it may suffer from the shortcomings of inadequate noise filtering and synthesizing the same samples as the original minority *** this end,we propose an improved MWMOTE method named joint sample position based noise filtering and mean shift clustering(SPMSC)to solve these ***,in order to effectively eliminate the effect of noisy samples,SPMsC uses a new noise filtering mechanism to determine whether a minority sample is noisy or not based on its position and distribution relative to the majority *** that MWMOTE may generate duplicate samples,we then employ the mean shift algorithm to cluster minority samples to reduce synthetic replicate ***,data cleaning is performed on the processed data to further eliminate class *** on extensive benchmark datasets demonstrate the effectiveness of SPMsC compared with other sampling methods.

关键词： imbalanced data classification oversampling noise filtering clustering

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氧化锌纳米复合材料的场发射性能研究

真空电子技术 2024年第4期 54-59,67页

作者：陈贵滔钱维金涂友情黄卫军董长昆温州大学温州市微纳光电器件重点实验室浙江温州325035

采用两步法制备得到氧化锌纳米复合材料。首先采用低温水热法在硅基底上生长得到氧化锌纳米棒阵列,再采用电泳法分别制备得到3种氧化锌纳米复合材料,并对所得产物进行了SEM、XRD、EDS和XPS表征,最后对产物进行了场发射性能测试。XRD、ED... 详细信息

采用两步法制备得到氧化锌纳米复合材料。首先采用低温水热法在硅基底上生长得到氧化锌纳米棒阵列,再采用电泳法分别制备得到3种氧化锌纳米复合材料,并对所得产物进行了SEM、XRD、EDS和XPS表征,最后对产物进行了场发射性能测试。XRD、EDS和XPS测试结果表明制备产物为Al_(2)O_(3)-ZnO、MgO-ZnO和CuO-ZnO纳米复合材料。同氧化锌纳米棒阵列相比,3种氧化锌纳米复合样品的开启电场均有所下降,其中MgO-ZnO纳米复合样品的场发射性能最优,开启电场为4.7 V/μm,4种样品的开启电场从低到高依次是:MgO-ZnO

关键词：场发射氧化锌纳米棒纳米复合材料水热法电泳法

Protective effect of melatonin on reexpansion pulmonary edema in rats model

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Chinese Medical Journal 2013年第3期126卷 500-504页

作者： ZHONG Ming XUE Zhang-gang CANG Jing WU wei huang jun-feng ZHU Du-ming Department of Anesthesiology Zhongshan Hospital Fudan University Shanghai 200032 China

Background Rapid reexpansion of collapsed lungs leads to reexpansion pulmonary edema （RPE）. We aimed to investigate the effect of melatonin in the prevention of RPE formation. Methods We used a Wistar rat model in which the left lung was collapsed by ligating the left bronchus for 48 hours and then reexpanded and ventilated for an additional 2 hours. Thirty minutes before reexpansion, we injected melatonin （10 mg/kg） or vehicle intraperitoneally. We compared the wet/dry ratio, oxygenation index, myeloperoxidase （MPO） activity, nitric oxide （NO）, malondialdehyde （MDA） and interleukin 8 （IL-8） levels in the reexpanded lungs between untreated and treated animals. Results We found that the wet/dry ratio of the melatonin group was significantly lower than that of the vehicle group, and the oxygenation index was higher in the melatonin group. Compared with the control, melatonin pretreatment significantly decreased the activities of IL-8, NO, MDA levels and MPO in lung tissues. Histopathology of reexpanded lungs showed that the melatonin pretreatment group had less pulmonary edema and less inflammatory cell infiltration. Conclusion Melatonin decreases pulmonary edema and improves oxygenation after reexpansion by attenuating oxidative stress and inhibiting pro-inflammatory cytokines.

关键词： pulmonary edema melatonin oxidative stress cytokines

Molecular Cloning of Myostatin Partial cDNA of Beijing Duck and Its Expression in Breast Muscle

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Agricultural Sciences in China 2006年第6期5卷 468-472页

作者： WANG Yong-sheng HOU Shui-sheng huang wei KANG jun-mei State Key Laboratory of Animal Nutrition Institute of Animal Science Chinese Academy of Agricultural Sciences Beijing 100094 P.RChina

In this experiment, 500 bp cDNA of myostatin gene was cloned from a Beijing duck＇s breast, The duck myostatin gene was found to have 98, 96, 95, 88, and 87% sequence similarity at the cDNA level with domestic goose, chicken, domestic pigeon, human, and pig, respectively. The predicted amino acid sequence has an overall similarity with a comparable region of turkey 99%, domestic goose 98%, and chicken 99%. Conserved domains of deduced amino acids showed that it belonged to the TGF-beta family. Myostatin expression in breast muscle was higher at 28, 35, and 42 days than at 7, 14, and 21 days. The pattern of myostatin expression was closely parallel to the trend of breast muscle growth, suggesting that myostatin might play an important role in breast muscle development. It was possible to postulate that myostatin may be a major determinant of muscle mass in breast muscle, as shown in other species.

关键词： Beijing duck myostatin cloning and sequence analysis expression

Body distribution and in situ evading of phagocytic uptake by macrophages of long-circulating poly (ethylene glycol) cyanoacrylate-co-nhexadecyl cyanoacrylate nanoparticles

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Acta Pharmacologica Sinica 2005年第12期26卷 1512-1518页

作者： Min huang wei WU~2 jun QIAN Dan-jing WAN Xiu-li wei Jian-hua ZHU School of Pharmacy,Fudan University,Shanghai 200032,China School of Pharmacy Fudan University Shanghai China

Aim:To investigate the body distribution in mice of[14C]-labeled polymethoxyethyleneglycol cyanoacrylate-co-n-hexadecyl cyanoacrylate(PEG-PHDCA)nanoparticles and in situ evading of phagocytic uptake by mouse peri-toneal ***:PEG-PHDCA copolymers were synthesized bycondensation of methoxypolyethylene glycol cyanoacetate with[14C]-hexadecyl-cyanoacetate.[14C]-nanoparticles were prepared using the nanoprecipitation/solvent diffusion method,while fluorescent nanoparticles were prepared by in-corporating rhodamine *** situ phagocytic uptake was evaluated by *** distribution in mice was evaluated by determining radioactivityin tissues using a scintillation ***:Phagocytic uptake by macroph-ages can be efficiently evaded by fluorescent PEG-PHDCA ***48 h,31% of the radioactivity of the stealth[14C]-PEG-PHDCA nanoparticles afteriv injection was still found in blood,whereas non-stealth PHDCA nanoparticleswere cleaned up from the bloodstream in a short *** distribution of stealthPEG-PHDCA nanoparticles and non-stealth PHDCA nanoparticals in mice waspoor in lung,kidney,and brain,and a little higher in *** accumula-tion was unusually high for both stealth and non-stealth nanoparticles,typical oflymphatic *** accumulation of stealth PEG-PHDCA nanoparticles in thespleen was 1.7 times as much as that of non-stealth PHDCA(P<0.01).But theaccumulation of stealth PEG-PHDCA nanoparticles in the liver was 0.8 times asmuch as that of non-stealth PHDCA(P<0.05).Conclusion:PEGylation leads tolong-circulation of nanoparticles in the bloodstream,and splenotropic accumula-tion opens up the potential for further development of spleen-targeted drug delivery.

关键词： nanotechnology tissue distribution polyethylene glycols cynoacrylates polymers spleen

Aerodynamic/stealth design of S-duct inlet based on discrete adjoint method

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Applied Mathematics and Mechanics(English Edition) 2024年第4期45卷 725-746页

作者： jun DENG Ke ZHAO Lin ZHOU wei ZHANG Bowen SHU Jiangtao huang Zhenghong GAO School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China Aerospace Technology Institute of China Aerodynamic Research and Development CenterMianyang 621000Sichuan ProvinceChina

It is a major challenge for the airframe-inlet design of modern combat aircrafts,as the flow and electromagnetic wave propagation in the inlet of stealth aircraft are very *** this study,an aerodynamic/stealth optimization design method for an S-duct inlet is *** upwind scheme is introduced to the aerodynamic adjoint equation to resolve the shock wave and flow *** multilevel fast multipole algorithm(MLFMA)is utilized for the stealth adjoint equation.A dorsal S-duct inlet of flying wing layout is optimized to improve the aerodynamic and stealth *** the aerodynamic and stealth characteristics of the inlet are effectively ***,the optimization results are analyzed,and it shows that the main contradiction between aerodynamic characteristics and stealth characteristics is the centerline and crosssectional *** S-duct is smoothed,and the cross-sectional area is increased to improve the aerodynamic characteristics,while it is completely opposite for the stealth *** radar cross section(RCS)is reduced by phase cancelation for low frequency *** method is suitable for the aerodynamic/stealth design of the aircraft airframe-inlet system.

关键词： S-duct inlet aerodynamic/stealth optimization design discrete adjoint upwind scheme multilevel fast multipole algorithm(MLFMA)