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中国电影批评史上的张恨水

重庆邮电大学学报（社会科学版） 2024年第3期36卷 148-156页

作者：李斌孙士俊苏州科技大学文学院江苏苏州215009

从电影理论和电影史的角度出发审视中国电影批评,已经成为重写电影史的重要组成部分。尽管“鸳鸯蝴蝶派”在电影批评史中占据着重要地位,但当前研究对象主要聚焦于上海的代表人物周瘦鹃等,而对于北京的代表人物张恨水的研究相对较少。... 详细信息

从电影理论和电影史的角度出发审视中国电影批评,已经成为重写电影史的重要组成部分。尽管“鸳鸯蝴蝶派”在电影批评史中占据着重要地位,但当前研究对象主要聚焦于上海的代表人物周瘦鹃等,而对于北京的代表人物张恨水的研究相对较少。为了避免电影批评史狭隘地限定在“上海电影批评史”范畴内,有必要深入研究张恨水的电影批评。尽管张恨水是一位广为人知的通俗文学作家,目前的研究更多关注于电影叙事模式和剪辑手法对他小说创作的影响,而较少涉及他的电影批评。通过对他的电影批评的深入分析可以发现,张恨水并非电影的“门外汉”,而是在社会功能、艺术表现、技术制作和市场营销等方面拥有深刻的见解。张恨水的电影批评是“鸳鸯蝴蝶派”电影批评的重要组成部分,但在思维、视角和意识等方面与上海的“鸳鸯蝴蝶派”存在一定差异。这种差异正好突显了早期中国电影的多元共生和丰富繁荣,表明中国电影并非单一受益于某一思想的影响;相反,它是在不同观点和审美标准相互平衡和影响的情况下形成的。对张恨水的电影批评进行深入分析,有助于打破以上海为中心的传统电影史书写框架,重新解读“鸳鸯蝴蝶派”电影批评的文化价值,为理解早期中国电影生态的多元性和丰富性提供新的视角。

关键词：电影批评张恨水周瘦鹃 “鸳鸯蝴蝶派”

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Combined QSAR/QSPR, Molecular Docking, and Molecular Dynamics Study of Environmentally Friendly PBDEs with Improved Insulating Properties

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Chemical Research in Chinese Universities 2019年第3期35卷 478-484页

作者： LIU Sicheng sun shijun School of Environment Northeast Normal UniversityChangchun 130117P.R.China

To improve the insulating properties of polybrominated diphenyl ethers(PBDEs), we studied the molecular structures and energy gap(Eg) values of 209 PBDEs using a three-dimensional quantitative structure-activity relationship(3D-QSAR) model, molecular docking, and molecular dynamics. We also analyzed the interaction mechanisms of PBDEs using a 2D-QSAR model, molecular substitution characteristics, and molecular docking. The 3D-QSAR model showed that the 2-, 4-, 5-, and 6-positions significantly influenced the PBDE insulating properties. Using BDE-34 as a template molecule, we designed six derivatives with 0.47%-28.44% higher insulation tlian BDE-34. Compared with BDE-34, the stability and flame retardancy of the above six derivatives were not adversely affected. These derivatives, except for 2,6-cyanomethyl-BDE, 2-cyanomethyl-BDE, and 2-aniinomethyl-BDE, were more toxic and biodegradable than BDE-34, but showed weaker bioaccumulation and migration abilities than BDE-34. Mechanism analysis showed that the highest occupied orbital energy, the most negative charge, and the dipole moment were the main quantitative parameters that aflected the PBDE insulating properties. PBDE insulation gradually decreased as the number of Br atoms increased. The level of similarity between the substitution patterns on the two benzene rings was significantly correlated with PBDE insulation, with hydrophobic groups having a more significant efiect on PBDE insulation.

关键词： Polybrominated diphenyl ether High insulation Tliree-dimensional quantitative structure-activity relationship Molecular docking Molecular dynamics Molecular modification

面向新能源发电的风机数据智能分析订正技术研究

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电子设计工程 2024年第12期32卷 127-131页

作者：孙世军朱坤双韩洪国网山东省电力公司应急管理中心山东济南250032

针对现有风速预测手段有限且准确率较低的问题,文中提出了一种面向新能源发电的风机数据智能分析订正模型。该模型将风速、风向和气压等元素的历史数据作为输入,并利用改进的随机森林算法(RF)完成对重要元素的筛选,从而降低样本空间的... 详细信息

针对现有风速预测手段有限且准确率较低的问题,文中提出了一种面向新能源发电的风机数据智能分析订正模型。该模型将风速、风向和气压等元素的历史数据作为输入,并利用改进的随机森林算法(RF)完成对重要元素的筛选,从而降低样本空间的维度。同时通过长短期记忆网络进行重要元素与风速之间内在关联关系的挖掘,实现精准的风速数据预测及订正分析。算法分析结果表明,所设计的RF-LSTM算法相较于ECMWF方案,风向误差下降了约40°,风速误差则降低了0.5 m/s以上,预测准确率显著提升。

关键词：随机森林长短期记忆网络风速预测风机数据分析

Mechanism of lithium insertion into NiSi_2 anode material for lithium ion batteries

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Rare Metals 2006年第z1期25卷 77-81页

作者： WEN Zhongsheng JI shijun sun Juncai TIAN Feng TIAN Rujin XIE Jingying Institute of Materials and Technology Dalian Maritime University Dalian 116026 China Laboratory of Energy Science and Technology Shanghai Institude of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China Institute of Materials and Technology Dalian Maritime University Dalian 116026 China Institute of Materials and Technology Dalian Maritime University Dalian 116026 China Institute of Materials and Technology Dalian Maritime University Dalian 116026 China Institute of Materials and Technology Dalian Maritime University Dalian 116026 China Laboratory of Energy Science and Technology Shanghai Institude of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China

As a promising high capacity anode material for lithium ion batteries, the lithium insertion performance and possible insertion mechanism of binary alloy of NiSi2 were discussed. The initial lithium insertion of crystal NiSi2 can reach up to 600 mAh·g-1, but large irreversible capacity occurrs simultaneously for serious structure transformation and the irreversible phase forms. XRD and XPS were employed to detect the crystal structure and composition changes produced by lithium insertion. The lithium insertion-extraction behavior of NiSi2 electrode is similar to that of silicon after the first discharge. The structure stability seems related to the non-stoichimometric Ni-Si compound formed by lithium insertion into NiSi2.

关键词： anode lithium ion batteries nickel silicide high capacity

PERFORMANCE OF ULTRA-LOW FREQUENCY PASSIVE VERTICAL VIBRATION ISOLATION SYSTEM WITH REVERSE PENDULUM

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Acta Mechanica Solida Sinica 2002年第1期15卷 45-48页

作者： Zhao Pengfei Huang Yuying Tang Mengxi sun shijun Department of Mechanics Huazhong University of Science and TechnologyWuhan 430074China Department of Physics Zhanjiang Normal CollegeZhanjiang 524048China Department of Physics Zhongshan UniversityGuangzhou 510275China

A novel long period passive vertical vibration isolatorconstructed by mounting reverse pendu- lums on two pairs of torsionsprings is presented. By theoretical analysis and numericalcalculation, it is shown that the isolator can achieve much longerresonant period due to gravitational positive feedback and is smallerin size than the current torsion spring isolators with the samegeometric parameters.

关键词： vertical vibration isolation torsion spring reverse pendulum resonantperiod

Degradability of biodegradable plastic films and its mulching effects on soil temperature and maize yield in northeastern China

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International Journal of Agricultural and Biological Engineering 2020年第2期13卷 146-153页

作者： Wangwang Zhang Lihong Wang Jiaqi Zhou Kunlun Zhu shijun sun College of Water Conservancy Shenyang Agricultural UniversityShenyang 110866China Shandong Tianzhuang Eco-Benign Plastics Technology Co. LtdJinan 250110China

Plastic film is an important resource in agricultural production,but it takes hundreds of years to degrade completely in natural *** large-scale use of plastic film will inevitably lead to serious environmental *** way to solve the problem is to develop a substitutable mulching film,such as a biodegradable film that can ultimately be decomposed to water,carbon dioxide,and soil organic matter by *** this study,a 2-year experiment was conducted to determine the degradation properties of a biodegradable plastic film,including degradation rate,surface microstructure,tensile strength and elongation at break,and the effects of different mulching treatments on soil temperature and maize *** mulching experiment was conducted with three different biodegradable plastic films with different degradation rates,using a common plastic film and a non-mulched treatment as *** the addition of the additives for degradation in the biodegradable plastic films,the degradation rates increased significantly,which were 7.2%-17.8%in 2017 and 18.1%-35.2%in 2018 after maize ***,the degradation occurred mainly on the ridge *** decrease in tensile strength and elongation was proportional to the degradation rate of the degradable *** SEM results indicated that the surface microstructures of the biodegradable films were loose and heterogeneous after maize *** plastic film mulching increased the soil temperature at soil depths of 5 cm,15 cm,and 25 cm,over the maize’s entire growth period,by 3.1℃-3.2℃ in 2017 and 1.2℃-2.1℃ in 2018 compared with the non-mulched *** biodegradable plastic film increased the maize yield by 10.4%-14.3%in 2017 and 11.6%-24.7%in *** soil temperature and maize yield increases were statistically significant;however,with respect to maize qualities,there were no statistically significant increases among the five *** study shows that biodegradable plastic

关键词： biodegradable plastic film film mulching degradation properties soil temperature maize yield

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胃肠活检组织常规染色不良原因分析

实用医技杂志 2024年第5期31卷 369-371,F0003页

作者：刘雅慧张子怡孙世珺中山市人民医院病理科中山528499

目的探讨胃肠活检组织在常规苏木精-伊红染色(HE)中出现伊红着色不均的原因分析。方法参照实用现代病理学技术的制片流程,对可能存在问题的组别一一排查。收集2023年8月至2024年1月中山市人民医院存档的120例胃肠活检石蜡标本切片,在染... 详细信息

目的探讨胃肠活检组织在常规苏木精-伊红染色(HE)中出现伊红着色不均的原因分析。方法参照实用现代病理学技术的制片流程,对可能存在问题的组别一一排查。收集2023年8月至2024年1月中山市人民医院存档的120例胃肠活检石蜡标本切片,在染色不同时期进行上机HE染色,对比分析不同染色时期下的染色结果。结果排查后发现问题可能存在HE染色步骤组中,乙醇浓度下降对伊红着色有影响。设置3批片,在不同染色时期分别上机染色。镜下观察前、中、后3个染色时期中,伊红着色不均率分别为0%(0/40)、17.5%(7/40)、72.5%(29/40)。在不同染色时期中伊红着色不均率差异有统计学意义(χ^(2)=78.603,P<0.01)。结论在HE染色步骤中,机器在工作后期,随着染片工作量增大,脱水环节中乙醇浓度降低,对伊红着色有影响。

关键词： HE染色乙醇浓度质量分析伊红

Experimental investigation of characteristics of instability evolution in a centrifugal compressor

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Chinese Journal of Aeronautics 2023年第4期36卷 174-189页

作者： Hanzhi ZHANG Ce YANG Ben ZHAO Wei ZHAO Chenxing HU Wenli WANG Jianbing GAO shijun sun School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China

The stable range of operation for the centrifugal compressor significantly influences the dynamic,economic,and environment-friendly characteristics of power systems.A deep understand-ing of the characteristics of instability evolution is necessary to improve the compressor stability.A centrifugal compressor equipped with a vaneless diffuser is experimentally investigated using high-response static-pressure *** results obtained indicate that three typical rotational-speed ranges exist based on the different instability evolution characteristics,which reveals the var-ious impeller–diffuser matching behaviors over the entire speed *** low-speed ranges((40%–75%)N_(max),N_(max)is the maximum rotational speed),the compressor exhibits stable,Rotating Insta-bility(RI),impeller stall(diffuser stall),and surge *** impeller stall mode is induced by RI and propagates downstream,resulting in the diffuser stall and compressor surge *** the medium-speed range((75%–85%)N_(max)),the compressor exhibits stable,diffuser stall,RI,and surge *** the high-speed range((85%–100%)N_(max)),the compressor exhibits stable,diffuser stall,and surge *** dominant instability position is shifted from the impeller to the diffuser as the rotational speed *** the impeller and diffuser stall present an irregular sawtooth static-pressure wave and exhibit broadband frequency spectrum patterns.

关键词： Centrifugal compressor Impellers Pressure measurement Rotating instability Stability Stall

面向电力气象数据的多源异构数据融合方法研究

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电子设计工程 2024年第16期32卷 178-182页

作者：李莉孙世军朱坤双董新戴振亚国网山东省电力公司济南供电公司山东济南250012 国网山东省电力公司应急管理中心山东济南250032

输电线路覆冰是影响电网可靠性的重要因素,针对传统人工巡检提取数据的方法存在安全性较差且计算效率偏低的问题,文中对多源异构的相关电力气象数据进行了融合处理与分析,并提出了一种覆冰等级检测算法。该算法使用改进SVM对数据进行分... 详细信息

输电线路覆冰是影响电网可靠性的重要因素,针对传统人工巡检提取数据的方法存在安全性较差且计算效率偏低的问题,文中对多源异构的相关电力气象数据进行了融合处理与分析,并提出了一种覆冰等级检测算法。该算法使用改进SVM对数据进行分类,以弥补计算冗余的不足,同时采用WOA算法对LS-SVM算法的参数加以优化,从而提高了算法的实时性和准确度。通过LSTM网络对分类后的数据进行特征提取,实现了对相关数据时序特征的分析。在实验测试中,所提算法的准确率、召回率及F1值等指标均优于对比算法,且准确率可达92.69%,证明其具有良好的运算性能,能够利用多源气象数据对输电线路的覆冰等级进行准确预测。

关键词：气象数据支持向量机鲸鱼优化算法长短时记忆网络覆冰检测