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长幼相辅:中国小城镇家庭的代际文化互动——基于小城镇家庭群体观影行为的考察分析

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新闻与传播评论 2024年第4期77卷 37-50页

作者：孟君李诚婧武汉大学艺术学院湖北武汉430072

小城镇家庭群体观影行为是一种重要的文化实践,观影时的代际文化互动反映了小城镇家庭内部复杂的文化契恰与情感交流,这是探究当代小城镇社会生活变迁的一个切入点。通过五地调研发现,小城镇家庭观影群体有稳定且清晰的画像,观影行为包... 详细信息

小城镇家庭群体观影行为是一种重要的文化实践,观影时的代际文化互动反映了小城镇家庭内部复杂的文化契恰与情感交流,这是探究当代小城镇社会生活变迁的一个切入点。通过五地调研发现,小城镇家庭观影群体有稳定且清晰的画像,观影行为包括聚合型、扩大型和分散型等丰富样态。与此同时,小城镇家庭观影形成独特的文化互动机制:在特定的观影时空中,家庭成员通过意愿协商和权力让渡的方式完成观影互动过程,空间场域、情感关联与契约缔结则共同建构了观影互动仪式。

关键词：小城镇家庭群体观影行为代际互动

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超宽带电磁脉冲实时监测系统研制

防护工程 2017年第6期39卷 60-65页

作者：黄刘宏张耀辉李跃波孟萃杨杰陈晋央军事科学院国防工程研究院清华大学工程物理系粒子技术与辐射成像教育部重点实验室

为实现高功率电磁脉冲环境实时监测,设计改进了一种雨滴状电小单极子天线,研编了高功率电磁环境实时监测软件,结合匹配设计的微波光子链路和高性能示波器等,组建了一套四通道的超宽带电磁脉冲实时监测系统。试验表明:该系统对频率范围小... 详细信息

为实现高功率电磁脉冲环境实时监测,设计改进了一种雨滴状电小单极子天线,研编了高功率电磁环境实时监测软件,结合匹配设计的微波光子链路和高性能示波器等,组建了一套四通道的超宽带电磁脉冲实时监测系统。试验表明:该系统对频率范围小于1. 5 GHz,电场峰值范围4～64 kV/m的超宽带电磁脉冲信号均能实现良好的波形监测,且通过增减监测天线内置的衰减器还能进一步扩展可测的场强范围。监测系统同时能够实现实时的时域和频域波形显示,幅值提取与告警等功能。该系统可用于防护工程内外部空间高功率电磁环境监测,可为开展更具针对性的工程电磁脉冲防护提供数据支撑。

关键词：电磁脉冲超宽带电小单极子天线监测校准

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糖醇类甜味剂及其对机体影响的研究进展

中华临床营养杂志 2024年第3期32卷 186-192页

作者：王梦李晓永秦利上海交通大学附属新华医院内分泌科上海200092

糖醇类甜味剂作为一种替代糖,目前广泛应用于食品添加行业。世界卫生组织表示,长期摄入人工甜味剂可能对身体健康产生负面影响,但唯一例外的是由糖醇制成的甜味剂。因此,对糖醇类甜味剂的研究日益受到关注。随着研究的深入,发现糖醇类... 详细信息

糖醇类甜味剂作为一种替代糖,目前广泛应用于食品添加行业。世界卫生组织表示,长期摄入人工甜味剂可能对身体健康产生负面影响,但唯一例外的是由糖醇制成的甜味剂。因此,对糖醇类甜味剂的研究日益受到关注。随着研究的深入,发现糖醇类甜味剂与肠道菌群、糖脂代谢、心血管疾病和肿瘤关系密切。此外,近期亦有研究表明,某些糖醇是一种内源性代谢物,可预测多种疾病的发生风险。该文在介绍糖醇类甜味剂的基础上,系统综述了其对人体的影响及其机制研究进展,以期为该领域的研究提供参考。

关键词：糖醇类甜味剂吸收代谢

Techniques for detecting protein-protein interactions in living cells:principles, limitations, and recent progress

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Science China(Life Sciences) 2019年第5期62卷 619-632页

作者： Yaning cui Xi Zhang meng Yu Yingfang Zhu Jingjing Xing Jinxing Lin Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Beijing Forestry University College of Biological Sciences & Biotechnology Beijing Forestry University Institute of Plant Stress Biology State Key Laboratory of Cotton Biology Department of Biology Henan University

Detecting protein-protein interactions(PPIs) provides fundamental information for understanding biochemical processes such as the transduction of signals from one cellular location to another; however, traditional biochemical techniques cannot provide sufficient spatio-temporal information to elucidate these molecular interactions in living cells. Over the past decade, several new techniques have enabled the identification and characterization of PPIs. In this review, we summarize three main techniques for detecting PPIs in vivo, focusing on their basic principles and applications in biological studies. We place a special emphasis on their advantages and limitations, and, in particular, we introduced some uncommon new techniques, such as single-molecule FRET(smFRET), FRET-fluorescence lifetime imaging microscopy(FRET-FLIM), cytoskeleton-based assay for protein-protein interaction(CAPPI) and single-molecule protein proximity index(smPPI), highlighting recent improvements to the established techniques. We hope that this review will provide a valuable reference to enable researchers to select the most appropriate technique for detecting PPIs.

关键词： protein-protein interactions in vivo techniques RET PCA co-localization

Research on water ice content in Cabeus crater using the data from the microwave radiometer onboard Chang’e-1 satellite

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Science China(Physics,Mechanics & Astronomy) 2010年第12期53卷 2172-2178页

作者： meng ZhiGuo CHEN ShengBo Edward Matthew OSEI Jnr WANG ZiJun cui TengFei College of Geoexploration Science and Technology Jilin UniversityChangchun 130026China Department of Geomatic Engineering Kwame Nkrumah University of Science and TechnologyKumasiGhana

The existence, formation and content of water ice in the lunar permanently shaded region is one of the important questions for the current Moon study. On October 9, 2009, the LCROSS mission spacecraft impacted the Moon, and the initial result verified the existence of water on the Moon. But the study on formation and content of water ice is still under debate. The existence of water ice can change the dielectric constants of the lunar regolith, and a microwave radiometer is most sensitive to the dielectric parameters. Based on this, in this paper, the radiation transfer model is improved according to the simulation results in high frequency. Then the mixture dielectric constant models, including Odelevsky model, Wagner and landau-Lifshitz model, Clau-sius model, Gruggeman-Hanai model, etc., are analyzed and compared. The analyzing results indicate that the biggest difference occurs between Lichtenecker model and the improved Dobson model. The values estimated by refractive model are the second biggest in all the models. And the results from Odelevsky model, strong fluctuation model, Wagner and Landau –Lifshitz model, Clausius model and Bruggeman-Hanai model are very near to each other. Thereafter, the relation between volume water ice content and microwave brightness temperature is constructed with Odelevsky mixing dielectric model and the improved radiative transfer simulation, and the volume water ice content in Cabeus crater is retrieved with the data from microwave radiometer onboard Chang’e-1 satellite. The results present that the improved radiative transfer model is proper for the brightness temperature simulation of the one infinite regolith layer in high frequency. The brightness temperature in Cabeus crater is 69.93 K (37 GHz), and the corresponding volume water ice content is about 2.8%.

关键词： Cabeus crater CELMS radiation transfer simulation mixture dielectric constant model water ice content

基于量子粒子群混合烟花优化支持向量机的软件缺陷预测研究

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西南民族大学学报（自然科学版） 2022年第6期48卷 653-659页

作者：崔梦天龙松林赵城斌吴克奇姜玥谢琪西南民族大学计算机系统国家民委重点实验室四川成都610041

开源软件缺陷问题是目前软件工程领域一个非常重要的研究领域,为了避免由于软件缺陷而引发的故障,如何识别和预测软件系统中存在的缺陷也是目前一个重要研究课题.针对上述现状和问题,提出了量子粒子群混合烟花优化算法,用于对支持向量... 详细信息

开源软件缺陷问题是目前软件工程领域一个非常重要的研究领域,为了避免由于软件缺陷而引发的故障,如何识别和预测软件系统中存在的缺陷也是目前一个重要研究课题.针对上述现状和问题,提出了量子粒子群混合烟花优化算法,用于对支持向量机进行参数寻优,将两种算法进行并联式融合,从而达到更好的寻优效果.其次,为验证提出方法的有效性,在NASA MDP数据集上进行仿真实验,将量子粒子群算法、混合烟花算法的量子粒子群算法用于SVM的参数寻优,并且与经典的SVM之间进行对比,证明其有效性.仿真实验结果表明,提出的基于量子粒子群混合烟花算法优化支持向量机软件缺陷预测模型的综合性能要优于其他模型,提出的量子粒子群混合烟花算法对量子粒子群跳出局部最优的能力有较大程度的提高.

关键词：软件缺陷预测支持向量机量子粒子群烟花算法混合优化算法

Thermal Resistance Simulation for CoF Packages

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Tsinghua Science and Technology 2015年第3期20卷 277-284页

作者： Chuan Chen Qian Wang Xiaotian meng Lin Tan Jian Wang Chengqiang cui Jian Cai the Institute of Microelectronics Tsinghua University Beijing 100084 China AKM Electronics Technology (Suzhou) Company Ltd. Suzhou 215000 China the Institute of Microelectronics and Tsinghua National Laboratory for Information Science and Technology Tsinghua University. Beijing 100084 China

Chip-on-Film （CoF） is a packaging technology that mounts Integrated Circuits （IC） chips directly on a flexible substrate surface. As both power and the number of pins in such packages increase, thermal conditions become more important. In this paper, the thermal resistance of CoF packages is studied using Ansys software to perform finite-element analysis. Because of circuit complexity, two equivalent methods-a length-weighted method and an image-recognition method--are proposed in place of an accurate model to get equivalent thermal conductivity of CoF package devices. In our experiments, the simulated value of thermal resistance based on the length-weighted method was 1.653 K/W, and the value based on the image-recognition method was 1.911 K/W. The real thermal resistance value of the CoF package device is 1.812 K/W. So the error between the real value measured by a tester and the simulated value based on the length-weighted method is 8.8%, and the error between the real value and the simulated value based on the image-recognition method is 5.5%. Hence, both methods can provide effective simulation results, and the image-recognition method is more accurate. In addition, we optimized the CoF package structure. From the simulation results, the drop in thermal resistance after the optimization is obvious.

关键词： Chip-on-Film (CoF) finite element analysis equivalent thermal conductivity

Preparation, Crystallization and Mechanical Properties of Potassium Aluminosilicate Glass-ceramics

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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 587-595页

作者：郑伟宏黄猛 GAO Zipeng ZHANG Hang YUAN Jian TIAN Peijing PENG Zhigang State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Shahe Research Institute of Glass Technology Shahe 054100China

In this study,transparent K_(2)O-Al_(2)O_(3)-SiO_(2)(KAS)glass-ceramics with leucite as the main crystalline phase were prepared by melting-quench method and two-step heat *** effects of SiO_(2)/Al_(2)O_(3) ratio and heat treatment on crystallization and mechanical properties were *** crystallization kinetics and X-Ray Diffraction(XRD)results showed that SiO_(2)/Al_(2)O_(3) ratio and heat treatment system had a direct impact on the crystallization behavior of potassium aluminosilicate *** heat-treated at 680℃/2 h and 780℃/1 h,cracks generated on the surface of the sample with the addition of SiO_(2)/Al_(2)O_(3)=4.8(in mol)due to the huge difference in the coefficient of thermal expansion between glass matrix and *** the addition of SiO_(2)/Al_(2)O_(3)(in mol)was 4,the sample with leucite as the main crystalline phase showed an excellent fracture toughness(1.46 MPa·m^(0.5))after the heat treatment of 680℃/2 h and 780℃/5 *** there was a phase transformation from kaliophilite to *** crystalline phases of the sample heat-treated at 680℃/8 h and 780℃/1 h were leucite and kaliophilite,which resulted in the visible light transmittance of 63%and the fracture toughness of 0.91 MPa·m^(0.5).Furthermore,after the heat treatment of 680℃/2 h and 780℃/5 h,the main crystalline phase of the sample with SiO_(2)/Al_(2)O_(3)=3.2(in mol)was still *** leucite only grows on the surface of the sample and is hard to grow inward,it is hard to achieve the bulk crystallization of leucite in the sample with SiO_(2)/Al_(2)O_(3)=3.2(in mol).

关键词： leucite glass-ceramic kaliophilite crystallization kinetics

内蒙古自治区乌兰察布市长城保护利用综合研究

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集宁师范学院学报 2024年第2期46卷 27-32页

作者：金萌萌乌兰察布市博物馆内蒙古乌兰察布012000

乌兰察布市境内现存有6个历史时期的长城。本文采用调查法、数据整理和分析法论述了乌兰察布市境内长城研究保护现状,指出了长城保护存在如下问题:“四有”工作基础比较薄弱、长城保护管理保障能力不足、长城区域文旅融合发展有待加强... 详细信息

乌兰察布市境内现存有6个历史时期的长城。本文采用调查法、数据整理和分析法论述了乌兰察布市境内长城研究保护现状,指出了长城保护存在如下问题:“四有”工作基础比较薄弱、长城保护管理保障能力不足、长城区域文旅融合发展有待加强、展示利用缺乏整体策划等。提出加强长城本体保护、整治长城区域周边环境、完善长城“四有”工作、加强数字化创新应用、提升管理保障能力、加强科普宣传教育、推动文旅融合发展、合理规划展示利用及开展长城多学科研究的意见和建议。

关键词：乌兰察布长城资源长城现状保护利用