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Symbolic Design Strategies for Film and Television Character Modeling in Cross-Cultural Contexts
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作者 Jianwei Yang 《Journal of Contemporary Educational Research》 2025年第10期369-375,共7页
Against the backdrop of the deep integration of the global film and television industry,character design has long transcended the mere pursuit of aesthetics and has become a key symbolic system that carries cultural i... Against the backdrop of the deep integration of the global film and television industry,character design has long transcended the mere pursuit of aesthetics and has become a key symbolic system that carries cultural information,builds identity recognition,and drives narrative.This article,by integrating semiotic theory and cultural dimension analysis,deeply dissects the core functions and common predicaments(stereotypes,cultural misinterpretation)of formative symbols in cross-cultural communication and systematically proposed four core design strategies:“extraction and translation of cultural symbols,”“visual mapping of cultural dimensions,”“symbolic support of narrative functions,”and“cultural decoding presuppositions for target audiences.”This article holds that successful cross-cultural modeling design should be committed to creative transformation on the basis of respecting the authenticity of culture,constructing a visual symbol system that combines cultural depth and universal appeal,and ultimately serving global narratives and in-depth cultural dialogues. 展开更多
关键词 Cross-cultural communication Film and television character modeling Cultural dimension
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V2V Channel Characterization and Modeling for Underground Parking Garages 被引量:3
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作者 Mi Yang Bo Ai +4 位作者 Ruisi He Liang Chen Xue Li Jianzhi Li Zhangdui Zhong 《China Communications》 SCIE CSCD 2019年第9期93-105,共13页
As an important part of the intelligent transportation system(ITS),vehicle-to-vehicle(V2V)communication will improve the safety and efficiency of the transportation system by realizing the information transmission bet... As an important part of the intelligent transportation system(ITS),vehicle-to-vehicle(V2V)communication will improve the safety and efficiency of the transportation system by realizing the information transmission between vehicles.The underground parking garage is a typical scenario in V2V communication,but as an indoor environment,it is different from the conventional outdoor road scenarios significantly.Therefore,the purpose of this paper is to analyze and model the V2V channel characteristics of an underground garage.In this paper,a novel channel measurement carried out in the underground garage is first introduced.Considering that there are a lot of obstacles in an underground garage,the non-line-of-sight(NLoS)condition is taken into account during the measurement.Then,channel characteristic parameters,including large-scale fading,delay spread,and K-factor,are analyzed based on the measured data.In addition,we also carry out channel angle of arrival analysis,show the distribution of azimuth of arrival(AOA)and elevation of arrival(EOA)of multipath components(MPC),and conduct a statistical analysis of the angular spread.In the process of analysis and modeling,we focus on the differences between line-of-sight(LoS)and NLoS conditions.The analysis and conclusions presented in this paper will enrich the understanding of V2V channel and benefit the design of V2V communications. 展开更多
关键词 V2V CHANNEL modelING CHANNEL characterIZATION
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Inclusion complexes of cefuroxime axetil with β-cyclodextrin:Physicochemical characterization, molecular modeling and effect of Larginine on complexation 被引量:3
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作者 Sarika Sapte Yogesh Pore 《Journal of Pharmaceutical Analysis》 SCIE CAS 2016年第5期300-306,共7页
The inclusion complexes of poorly water-soluble cephalosporin, cefuroxime axetil(CFA), were prepared with β-cyclodextrin(βCD) with or without addition of L-arginine(ARG) to improve its physicochemical properties. We... The inclusion complexes of poorly water-soluble cephalosporin, cefuroxime axetil(CFA), were prepared with β-cyclodextrin(βCD) with or without addition of L-arginine(ARG) to improve its physicochemical properties. We also investigated the effect of ARG on complexation efficiency(CE) of βCD towards CFA in an aqueous medium through phase solubility behaviour according to Higuchi and Connors. Although phase solubility studies showed AL(linear) type of solubility curve in presence and absence of ARG, the CE and association constant(Ks) of βCD towards CFA were significantly promoted in presence of ARG,justifying its use as a ternary component. The solid systems of CFA with βCD were obtained by spray drying technique with or without incorporation of ARG and characterized by differential scanning calorimetry(DSC), X-ray powder diffractometry(XRPD), scanning electron microscopy(SEM), and saturation solubility and dissolution studies. The molecular modeling studies provided a better insight into geometry and inclusion mode of CFA inside βCD cavity. The solubility and dissolution rate of CFA were significantly improved upon complexation with βCD as compared to CFA alone. However, ternary system incorporated with ARG performed better than binary system in physicochemical evaluation. In conclusion, ARG could be exploited as a ternary component to improve the physicochemical properties of CFA via βCD complexation. 展开更多
关键词 CEFUROXIME axetil Β-CYCLODEXTRIN INCLUSION complex MOLECULAR modeling PHYSICOCHEMICAL characterization
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Comprehensive Characterization Model of Integrated Cotton Fiber Quality Index 被引量:1
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作者 刘贵 杨瑜榕 +2 位作者 王明葵 YANG Shouren 于伟东 《Journal of Donghua University(English Edition)》 EI CAS 2011年第4期379-383,共5页
An integrated cotton fiber quality index (ICFQI) model with cotton fiber qualities which can directly express cotton fiber integrated quality and spinning yarn quality was studied. The fiber length, strength, Micron... An integrated cotton fiber quality index (ICFQI) model with cotton fiber qualities which can directly express cotton fiber integrated quality and spinning yarn quality was studied. The fiber length, strength, Micronalre (fiber fineness and fiber maturity), uniformity of fiber length, and short fiber content are the pivotal indexes expressing ICFQI. All of the results above are the basic knowledge to build up the models of ICFQI. According to spinning consistency index (SCI), spinning strength and spinning yarn integrated quality, ICFQI was the best choice. As the methods of ICFQI had quite a lot of advantages like explicit mechanism, few independent variables. The integrated fiber quality index had a significant positive correlation with yarn strength and spinning consistency, significant negative correlation with yarn evenness and yarn thin places. In additional, the model of the relationship between ICFQI and SCI was established as: SCI=0. 235 6·ICFQI +56.153. It was concluded that ICFQI value was the shared reference index for the testing of fiber inspection agency and the selection and distribution of raw cotton bales by textile mills. 展开更多
关键词 fiber quality integrated cotton fiber quality index(ICFQ1) comprehensive characterization model
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CHARACTERIZATIONS ON THE THIXOTROPY-LOOP TESTS USING UCM MODEL WITH A RATE-TYPE KINETIC EQUATION 被引量:1
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作者 Shu-xin Huang Chuan-jing Lu 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2006年第6期609-617,共9页
The theoretical characterizations on the triangular-form thixotropy-loop tests of an LDPE melt (PE-FSB- 23D022/Q200) were conducted in the present paper by using a new thixotropy model, which is constituted by the u... The theoretical characterizations on the triangular-form thixotropy-loop tests of an LDPE melt (PE-FSB- 23D022/Q200) were conducted in the present paper by using a new thixotropy model, which is constituted by the upper convected Maxwell model and a rate-type kinetic equation. The new thixotropic Maxwell model can partially describe well three reported thixotropy-loop experiments by comparison with the previous calculations of the variant form of the thixotropy-type Huang model. It is noted that the stress deviations between the experiments and the predictions of the new thixotropic Maxwell model are much slighter than those deviations obtained by using the variant Huang model at the same condition, although both models include five parameters. The constitution of the new thixotropic Maxwell model is more reasonable than that of the variant Huang model. 展开更多
关键词 Thixotropy-loop tests Theoretical characterization Thixotropy models.
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Computer Modeling and Simulation of Ultrasonic System for Material Characterization 被引量:1
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作者 Yogendra B. Gandole 《Modeling and Numerical Simulation of Material Science》 2011年第1期1-13,共13页
In this paper the system for simulation, measurement and processing in graphical user interface implementa- tion is presented. The received signal from the simulation is compared to that of an actual measurement in th... In this paper the system for simulation, measurement and processing in graphical user interface implementa- tion is presented. The received signal from the simulation is compared to that of an actual measurement in the time domain. The comparison of simulated, experimental data clearly shows that acoustic wave propaga- tion can be modeled. The feasibility has been demonstrated in an ultrasound transducer setup for material property investigations. The results of simulation are compared to experimental measurements. Results ob- tained fit some much with those found in experiment and show the validity of the used model. The simula- tion tool therefore provides a way to predict the received signal before anything is built. Furthermore, the use of an ultrasonic simulation package allows for the development of the associated electronics to amplify and process the received ultrasonic signals. Such a virtual design and testing procedure not only can save us time and money, but also provide better understanding on design failures and allow us to modify designs more efficiently and economically. 展开更多
关键词 modelING Simulation ULTRASONIC MATERIAL characterIZATION SIGNAL PROCESSING
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Characterization of Metallic Formation on Ion Exchange/Chelating Resins by Various Metal Groups and Extrapolation to Molecular Models
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作者 Sean Dudley Recep Avci +4 位作者 William Gleason William Hill Jacob Howery Miles Jaqua Daisy Margrave 《Journal of Minerals and Materials Characterization and Engineering》 2018年第1期72-85,共14页
This paper examines the metallic rare earth element (REE) formations that grow on ion exchange/chelating resins. Formation of these stabilized metallic structures leads to composite particle destruction and appears to... This paper examines the metallic rare earth element (REE) formations that grow on ion exchange/chelating resins. Formation of these stabilized metallic structures leads to composite particle destruction and appears to be the result of the dynamic environment of the batch experimentation. Polymeric structure, electron availability, pH, kinetic factors, and the REE f-orbitals play significant roles in the formation of the organometallic framework. f-orbitals are largely still not understood to a great extent but this work serves to elucidate the larger role they may play in ligand interactions. Molecular modeling was utilized as a secondary component in investigating rare earth element (REE) deposition onto ion exchange/chelating resins. Modeling of the f-orbital frontier regions and the application of the HOMO-LUMO transition’s effect on molecular transfer and stability is discussed. Advanced metallic loading, in the manner of an organometallic structure, shows short-term stability resulting in particle destruction as increased REE is adsorbed. 展开更多
关键词 RARE EARTH Recovery Polymer modeling characterIZATION
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Synthesis and Characterization of Porphyrin-Trisbenzimidazole Dinucleating Ligand and Its Heterodinuclear Complex as CcO Active Site Model
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作者 Lu Wei-bing, Wang Cun-xin, Deng Li-zhi, Zhou Xiao-hai, Ren Jian-guoCollege of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, China 《Wuhan University Journal of Natural Sciences》 CAS 2003年第02A期428-432,共5页
A new dinucleating ligand having two metalbinding sites has been designed and synthesized as model ligand for Cytochrome c Oxidase. The corresponding heterodinuclear complex, as an active site model of Cytochrome c Ox... A new dinucleating ligand having two metalbinding sites has been designed and synthesized as model ligand for Cytochrome c Oxidase. The corresponding heterodinuclear complex, as an active site model of Cytochrome c Oxidase, consisting of a porphyrinatocobalt compound covalently linked with a copper derivative of tris(2-benzimidazylmethyl) amine bearing three benzimidazole ligands for copper was synthesized and spectroscopically characterized. The spectra data suggest that there are interactions between the cobalt and copper coordination units. The cobalt is coordinated to four central nitrogens of the porphyrin and the copper has pentacoordinate geometry with the four tertiary amine nitrogens and a chloride. 展开更多
关键词 Key words Cytochrome c Oxidase model compound SYNTHESIS characterIZATION
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Characterization and Modelling of High Temperature Flow Behaviour of V Modified 2.25Cr-1Mo Heat Resistant Steel Plate
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作者 刘自立 刘春明 +1 位作者 DING Jianhua ZHANG Hanqian 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2020年第1期192-199,共8页
In order to study the high temperature flow behaviour of the V modified 2.25Cr-1Mo steel plate to guide the industrial rolling practice, the hot compression tests were carried out at the temperatures from 900 ℃ to 11... In order to study the high temperature flow behaviour of the V modified 2.25Cr-1Mo steel plate to guide the industrial rolling practice, the hot compression tests were carried out at the temperatures from 900 ℃ to 1150 ℃ and the strain rates from 0.01s^-1 to 1 s^-1 on Thermecmastor-Z equipment. Based on the experimental data of the hot compression tests, a kind of Arrhenius-type constitutive equation was developed.The equation can accurately show the relationship between the flow stress and the deformation temperature, the strain and the strain rate. The measured true stress-true strain curves exhibit two kinds of flow stress curves. Moreover, the forming mechanisms of these two types curves were explained by softening, wok hardening theory as well as metallographic and hardness experimental results. The accuracy of the developed Arrheniustype constitutive equation was identified by three kinds of statistic parameters and also by comparison of the measured and predicted data. The reasonable value of the three types of statistic parameters and the good agreement between the experimental and predicted data can confirm the validity of the developed Arrheniustype constitutive equation for V modified 2.25 Cr-1 Mo heat resistant steel plate. 展开更多
关键词 flow behaviour characterIZATION modelling V MODIFIED 2.25CR-1MO STEEL heat resistant STEEL PLATE
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Molecular Characterization, 3D Modeling of Grass Carp Interleukin-10 Receptor 1 (IL10R1)
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作者 He Wei Shangnian Wang +2 位作者 Lei Qin Xinyan Wang Hong Zhou 《Engineering(科研)》 2013年第10期214-219,共6页
Interleukin-10 (IL-10) is an important cytokine that plays a pivotal role in natural and adaptive immune systems. However, in lower vertebrates, especially in teleost the receptor of this cytokine is still largely unk... Interleukin-10 (IL-10) is an important cytokine that plays a pivotal role in natural and adaptive immune systems. However, in lower vertebrates, especially in teleost the receptor of this cytokine is still largely unknown. This paper described the cloning and characterization of grass carp interleukin-10 receptor 1 (gcIL10R1) and the 3D structure of its extracellular domain was predicted. The gcIL10R1 cDNA included 180 bp5’ untranslated region (UTR), 870 bp3’ UTR and an open reading frame (ORF) of 1632 bp. The ORF was found to encode a 543 amino acid protein with a putative JAK1 binding site, one STAT3 binding site. The phylogenetic analysis clusters gcIL10R1 with other teleost IL10R1s but independently of the amphibian, avian and mammalian IL10R1s. The 3D structure of its extracellular domain was the first homology model of a fish IL10R1 that revealed a high similarity with its mammalian and avian counterparts. 展开更多
关键词 GRASS CARP INTERLEUKIN-10 RECEPTOR 1 Structure characterization 3D modeling
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Evaluation of Unknown Groundwater Contaminant Sources Characterization Efficiency under Hydrogeologic Uncertainty in an Experimental Aquifer Site by Utilizing Surrogate Models
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作者 Shahrbanoo Hazrati-Yadkoori Bithin Datta 《Journal of Water Resource and Protection》 2017年第13期1612-1633,共22页
Characterization of unknown groundwater contaminant sources is an important but difficult step in effective groundwater management. The difficulties arise mainly due to the time of contaminant detection which usually ... Characterization of unknown groundwater contaminant sources is an important but difficult step in effective groundwater management. The difficulties arise mainly due to the time of contaminant detection which usually happens a long time after the start of contaminant source(s) activities. Usually, limited information is available which also can be erroneous. This study utilizes Self-Organizing Map (SOM) and Gaussian Process Regression (GPR) algorithms to develop surrogate models that can approximate the complex flow and transport processes in a contaminated aquifer. The important feature of these developed surrogate models is that unlike the previous methods, they can be applied independently of any linked optimization model solution for characterizing of unknown groundwater contaminant sources. The performance of the developed surrogate models is evaluated for source characterization in an experimental contaminated aquifer site within the heterogeneous sand aquifer, located at the Botany Basin, New South Wales, Australia. In this study, the measured contaminant concentrations and hydraulic conductivity values are assumed to contain random errors. Simulated responses of the aquifer to randomly specified contamination stresses as simulated by using a three-dimensional numerical simulation model are utilized for initial training of the surrogate models. The performance evaluation results obtained by using different surrogate models are also compared. The evaluation results demonstrate the different capabilities of the developed surrogate models. These capabilities lead to development of an efficient methodology for source characterization based on utilizing the trained and tested surrogate models in an inverse mode. The obtained results are satisfactory and show the potential applicability of the SOM and GPR-based surrogate models for unknown groundwater contaminant source characterization in an inverse mode. 展开更多
关键词 Surrogate models UNKNOWN GROUNDWATER Contamination Sources Source characterIZATION EXPERIMENTAL SITE Contaminated Aquifers
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基于电化学-声学耦合模型的磷酸铁锂电池老化状态表征
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作者 刘素贞 孟维绪 +2 位作者 袁路航 徐志成 金亮 《电工技术学报》 北大核心 2026年第1期329-342,共14页
锂离子电池的寿命衰退与循环老化过程中内部结构的演变密切相关。检测锂离子电池内部结构变化有助于更加准确地评估电池的健康状态,然而,电池的封闭式包装导致难以对其内部直接测量。由于超声波能够检测工件内部结构的演变情况且精度较... 锂离子电池的寿命衰退与循环老化过程中内部结构的演变密切相关。检测锂离子电池内部结构变化有助于更加准确地评估电池的健康状态,然而,电池的封闭式包装导致难以对其内部直接测量。由于超声波能够检测工件内部结构的演变情况且精度较高,可用于无损检测电池内部结构的动态变化。该文基于电极活性颗粒应力应变理论,建立磷酸铁锂电池电化学-声学耦合模型,模拟电池老化过程中内部结构变化,研究不同老化状态下超声信号的响应特性,同时构建声学特征参数随电池老化状态的变化曲线,进一步分析电极结构演化机制,并且搭建实验平台验证耦合模型的正确性。该方法可为分析磷酸铁锂电池的老化机理及无损检测电池健康状态提供全新的视角。 展开更多
关键词 磷酸铁锂电池 电化学-声学耦合模型 循环老化 超声特性 结构演变
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基于反向传播神经网络的城市环境路径损耗预测研究
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作者 王志鹏 万留进 +3 位作者 李玉生 吴昊 马鑫 行鸿彦 《无线电通信技术》 北大核心 2026年第1期181-188,共8页
针对城市复杂电磁环境下传统经验模型预测精度不足与射线追踪(Ray-Tracing,RT)方法计算效率低下的双重挑战,提出了一种融合卫星影像与三维几何特征的反向传播神经网络(Back Propagation Neural Network,BPNN)路径损耗预测模型。通过整... 针对城市复杂电磁环境下传统经验模型预测精度不足与射线追踪(Ray-Tracing,RT)方法计算效率低下的双重挑战,提出了一种融合卫星影像与三维几何特征的反向传播神经网络(Back Propagation Neural Network,BPNN)路径损耗预测模型。通过整合高分辨率卫星影像的RGB光谱信息与散射体的统计特征,表征电磁传播路径的环境特征,结合经过实测数据校准的RT仿真数据构建数据集。实验结果表明,引入三维环境特征后,预测精度显著提高。相较于不使用三维特征的数据集,均方根误差(Root Mean Square Error,RMSE)下降1.54 dB;与对比的多层感知器(Multi-Layer Perceptron,MLP)和随机森林(Random Forest,RF)模型相比,RMSE分别下降2.21 dB和0.34 dB。同时,BPNN模型的计算时间仅为RT模型的一半左右,且在新场景中与实测数据相比的RMSE为5.27 dB,表现出良好的泛化能力。 展开更多
关键词 路径损耗 反向传播神经网络 信道模型 环境表征
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纳米颗粒增强金属基复合材料温度相关性屈服强度理论表征模型
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作者 王翊霖 李卫国 麻建坐 《应用数学和力学》 北大核心 2026年第1期57-67,共11页
通过定量表征宽温域下,各强化机制对纳米颗粒增强金属基复合材料(nanoparticle reinforced metal matrix composites,NRMMCs)的屈服强度以及晶界滑移对金属基体屈服强度的影响,建立了不含拟合参数的NRMMCs温度相关性屈服强度理论表征模... 通过定量表征宽温域下,各强化机制对纳米颗粒增强金属基复合材料(nanoparticle reinforced metal matrix composites,NRMMCs)的屈服强度以及晶界滑移对金属基体屈服强度的影响,建立了不含拟合参数的NRMMCs温度相关性屈服强度理论表征模型.模型仅需金属基体任意一个参考温度下的屈服强度及相关材料参数,如比热容、热膨胀系数、熔点等,即可预测NRMMCs在任意温度下的屈服强度.模型预测结果与目前获取到的四组所有实验数据均取得了良好的一致性,实现了对NRMMCs宽温域屈服强度的合理预测.在此基础上,探讨了主要强化机制对NRMMCs屈服强度的影响及其随温度和颗粒尺寸的演化规律,为设计和开发适用于宽温域下的NRMMCs提供了理论依据和有效建议。 展开更多
关键词 纳米颗粒增强金属基复合材料 温度相关性 屈服强度 理论表征模型 强化机制
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基于多元线性回归的柴油基础理化性质预测模型
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作者 王先林 唐思扬 +3 位作者 宋磊 钟山 李红娇 梁斌 《石油与天然气化工》 北大核心 2026年第1期113-121,共9页
目的利用组成特征建立柴油性质预测模型,实现高效的性质预测,并分析组成特征对性质的影响。方法根据92组模拟柴油样品数据计算组成特征,根据组成特征(平均相对分子质量、氢碳比、碳数、不饱和度、平均分子芳香烃环数、平均分子环烷烃环... 目的利用组成特征建立柴油性质预测模型,实现高效的性质预测,并分析组成特征对性质的影响。方法根据92组模拟柴油样品数据计算组成特征,根据组成特征(平均相对分子质量、氢碳比、碳数、不饱和度、平均分子芳香烃环数、平均分子环烷烃环数、平均分子总环数)与性质(密度、折光率、运动黏度、动力黏度、表面张力、蒸馏曲线积分)的相关性分析筛选合适的组成特征描述符,通过多元线性回归建立组成特征-性质预测模型并优化,通过标准化将组成特征的尺度统一,重新建模分析组成特征对性质的相对重要性。结果初始模型(氢碳比和碳数)预测密度、折光率、蒸馏曲线积分效果较好(决定系数R^(2)>0.85),但黏度和表面张力精度不足。优化后引入芳香烃环数和环烷烃环数,显著提升了模型性能,除表面张力外,其他性质的R^(2)均大于0.90,平均绝对百分比误差δ_(MAPE)<5%,密度与折光率的R^(2)>0.95。分析表明,碳数主导黏度和蒸馏曲线,芳香烃环数和环烷烃环数对密度影响显著。结论芳香烃环数、环烷烃环数和碳数是影响柴油基础理化性质的关键描述符,能准确预测柴油基础理化性质,该研究为柴油组成设计和性能优化提供了可靠的量化分析工具,对燃料研发具有重要指导意义。 展开更多
关键词 柴油 性质预测模型 组成特征描述符 多元线性回归 基础理化性质
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地下水污染地球物理研究进展
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作者 毛德强 孟健 +2 位作者 翟恪祥 曾子豪 刘士亮 《地学前缘》 北大核心 2026年第1期444-469,共26页
精准刻画与监测地下水中污染物的时空特征是实现高效准确治理的重要任务。地下水系统的隐蔽性与非均质性限制了污染分布特征与运移规律的精准刻画。地球物理方法具有非侵入、低成本、高效率和信息连续等诸多优势,已成为刻画与监测地下... 精准刻画与监测地下水中污染物的时空特征是实现高效准确治理的重要任务。地下水系统的隐蔽性与非均质性限制了污染分布特征与运移规律的精准刻画。地球物理方法具有非侵入、低成本、高效率和信息连续等诸多优势,已成为刻画与监测地下水污染的重要手段。本文综述了地下水污染领域中较为成熟的地球物理方法,梳理了方法的原理、模型与研究范例。结果表明,针对地球物理方法应用中的不确定性问题,已发展了诸多机理模型、反演技术以及多源数据融合方法。结合室内柱实验与微观扫描等技术建立了污染介质作用下多孔介质地球物理响应的解译模型;开发了一系列映射水文地质参数与地球物理数据的岩石物理模型,实现了场地尺度由地球物理数据直接反演污染物浓度的可能性;在反演方法上发展了基于结构约束等先验信息的反演方法,降低了结果的不确定性;通过数值模拟新方法实现了多源数据的融合与耦合模拟。未来研究需要在微观孔隙尺度上深入探究污染物的运移机理,并建立参数统一的地下水污染地球物理响应数据库。同时,通过结合人工智能与数据同化等新技术,可以更精准、全面的描述、预测和管理地下水污染场地。 展开更多
关键词 地下水污染 地球物理方法 岩石物理模型 刻画与监测 未来挑战
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川南历史遗留矿区土壤重金属地球化学特征及吸附机理解析
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作者 李奕信 施泽明 +2 位作者 衡骥 魏菲 赵锴 《地下水》 2026年第1期141-144,共4页
川南地区煤矿、硫铁矿丰富,历史上土法采煤、炼磺产生的“三废”对矿区及其周边土壤环境造成了严重的污染。本文以煤矿区与硫矿区表层土壤为研究对象,查明其理化性质和含量特征基础上,开展吸附实验,采用等温吸附和热力学模拟,探讨土壤... 川南地区煤矿、硫铁矿丰富,历史上土法采煤、炼磺产生的“三废”对矿区及其周边土壤环境造成了严重的污染。本文以煤矿区与硫矿区表层土壤为研究对象,查明其理化性质和含量特征基础上,开展吸附实验,采用等温吸附和热力学模拟,探讨土壤中重金属的吸附机制。研究结果显示,历史遗留矿区土壤重金属Cd显著富集,煤矿区Cd含量为1.35 mg/kg,硫矿区Cd含量为0.99 mg/kg,远高于四川省背景值含量;Langmuir模型与Dubinin-Radushkevich模型能较好拟合研究区土壤吸附Cd、Pb的过程,吸附过程为单分子层吸附,且为化学吸附作用;土壤吸附重金属Cd、Pb是一种自发、吸热和熵增的过程,吸附量随温度升高而增加;微观表征对比显示,土壤吸附重金属后比表面积和孔容增大,土壤颗粒从分散变化为团粒状。 展开更多
关键词 矿区土壤 吸附模型 热力学 微观表征
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隧洞开挖塑性区演化特性参数化表征与代理模型预测
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作者 夏超杰 李鸿鹄 +3 位作者 孙爱军 陈在铁 查新元 徐磊 《水力发电》 2026年第1期52-58,共7页
针对采用传统数值仿真方法获取隧洞开挖过程中围岩塑性区演化特性效率较低的问题,提出了一种隧洞开挖塑性区演化特性曲线快速预测方法。该方法聚焦隧洞横剖面内围岩塑性区面积(深度)随开挖面推进的演化过程这一关键特性,提出采用三参数... 针对采用传统数值仿真方法获取隧洞开挖过程中围岩塑性区演化特性效率较低的问题,提出了一种隧洞开挖塑性区演化特性曲线快速预测方法。该方法聚焦隧洞横剖面内围岩塑性区面积(深度)随开挖面推进的演化过程这一关键特性,提出采用三参数指数型函数对隧洞开挖塑性区演化特性曲线进行参数化表征,并通过构建分别以塑性区演化特性曲线的主要影响因素和表征参数为输入和输出的Kriging代理模型,实现塑性区演化特性曲线的快速预测。以某输水隧洞工程为例,开展了3个典型洞段开挖塑性区演化特性曲线预测,通过与传统数值仿真方法结果的对比,验证了所提方法的可行性与预测精度。 展开更多
关键词 水工隧洞 塑性区演化 快速预测 参数化表征 代理模型
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致密砂岩气藏剩余储量定量表征与差异化挖潜对策——以鄂尔多斯盆地苏里格气田苏36-11区块为例
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作者 贾爱林 朱汉卿 +2 位作者 李刚 韩江晨 黄苏琦 《天然气勘探与开发》 2026年第1期15-27,共13页
苏里格气田的成功开发,为鄂尔多斯盆地致密气产量不断攀升做出了巨大的贡献。目前,该气田中区已进入开发的中后期,天然气开发程度和储量动用程度均较高。为了定量表征致密砂岩气藏开发中后期剩余储量的空间分布并制订差异化挖潜对策,以... 苏里格气田的成功开发,为鄂尔多斯盆地致密气产量不断攀升做出了巨大的贡献。目前,该气田中区已进入开发的中后期,天然气开发程度和储量动用程度均较高。为了定量表征致密砂岩气藏开发中后期剩余储量的空间分布并制订差异化挖潜对策,以苏里格气田中区苏36-11区块为例,在对致密砂岩储层展布特征进行精细描述的基础上,采用三维地质建模与CMOST智能历史拟合数值模拟相结合的研究方法,计算有效砂体的发育规模、分布频率,逐级描述致密气剩余储量。研究结果表明:(1)苏36-11区块沉积时期水动力较强,受辫状河体系叠置带控制,砂体广泛连片发育;(2)二叠系下石盒子组盒_(8)段和山西组山_(1)段有效砂体发育频率相对高,盒_(8上)亚段、盒_(8下)亚段和山_(1)段有效砂体发育频率分别为14%、56%、30%;(3)采用CMG软件CMOST模块实现了气井自动历史拟合与参数优化,数值模拟定量评价结果表明,剩余气主要集中在盒_(8下)亚段和山_(1)^(2)层,剩余气类型主要为层间滞留型以及井间滞留型,局部还存在压裂不完善滞留型;(4)将该区块按照储量动用程度划分为4类21个井区,分区块开展了不同类型井区储量动用对策研究。结论认为,针对该区块不同类型井区需要分别开展局部加密、查层补孔、老井侧钻、整体部署等差异化挖潜对策,以提高该区块天然气采收率进而支撑苏里格气田持续稳产。 展开更多
关键词 鄂尔多斯盆地 苏里格气田 致密砂岩气 剩余气表征 有效砂体 地质建模 数值模拟 挖潜对策
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实验探究在高中物理概念教学中的应用探讨
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作者 赵建礼 《成才之路》 2026年第5期97-100,共4页
高中物理概念教学是发展学生认知、培养学生科学素养的关键环节。而实验探究嵌入概念的发生链、表达系与迁移域,能重塑物理概念教学的结构逻辑,提升学生对核心概念的理解与迁移能力。要注重概念扰动驱动的认知重建、结构递进驱动的模型... 高中物理概念教学是发展学生认知、培养学生科学素养的关键环节。而实验探究嵌入概念的发生链、表达系与迁移域,能重塑物理概念教学的结构逻辑,提升学生对核心概念的理解与迁移能力。要注重概念扰动驱动的认知重建、结构递进驱动的模型建构、表征转换驱动的认知重构、反演推理驱动的逻辑生成,以此使高中物理实验不再停留于现象再现或结果验证层面,而成为知识生成、认知转化与结构建模的教学主轴。 展开更多
关键词 高中物理 概念教学 实验探究 认知 模型 表征 反演 推理
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