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Research on Response Characteristics of GPR Method for Detecting Phreatic Lines in Embankments GPR 法检测堤坝岩爆线的响应特性研究
Pub Date : 2024-06-04 DOI: 10.56028/aetr.10.1.765.2024
Yan Chen, Shengxing Zhang, Lei Tang
The excessive elevation of the phreatic lines under continuous high-water levels is the cause of many dangerous situations in embankments. Therefore, accurately understanding the dynamic changes in the infiltration characteristics of embankments is of great significance for judging and evaluating the stability of engineering. This study conducted indoor model experiments and used ground penetrating radar to detect the phreatic lines of soil. By comparing the radar detection results with the measured position of the phreatic lines, it was determined that the phreatic lines appeared as a continuous strong reflection surface with similar shapes in the radargram, and the reflection below the reflection surface became weaker. Through time-domain analysis of the single waveform at different time points, it was found that the amplitude of the reflected wave at the saturation line was larger, and the energy attenuation below the saturation line was faster, resulting in a rapid decrease in amplitude; perform Fourier transform on a single channel signal to obtain a spectrogram, and perform frequency domain analysis on it. The main frequency is around 600MHz, and the second main frequency is around 900MHz. As the saturation line rises, the main frequency gradually shifts towards lower frequencies.
在持续高水位的情况下,噬水线的过度抬升是造成堤坝出现许多险情的原因。因此,准确了解堤坝渗透特性的动态变化,对于判断和评价工程的稳定性具有重要意义。本研究进行了室内模型试验,并使用探地雷达探测了土壤的渗透线。通过将雷达探测结果与测量到的喷气线位置进行对比,确定喷气线在雷达图中呈现为形状相似的连续强反射面,反射面以下的反射变弱。通过对不同时间点的单波形进行时域分析,发现饱和线处的反射波振幅较大,饱和线以下能量衰减较快,振幅迅速减小;对单通道信号进行傅里叶变换,得到频谱图,并对其进行频域分析。主频约为 600MHz,次主频约为 900MHz。随着饱和线的上升,主频逐渐向低频移动。
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引用次数: 0
Research on the composition of glass relics based on CART model 基于 CART 模型的玻璃文物成分研究
Pub Date : 2024-05-14 DOI: 10.56028/aetr.10.1.753.2024
Mingyu An, Daolong Yuan, Suyang Liu, Jialei Ding
Based on each index of glass samples, the  indexes of all kinds of glass sample cluster analysis, and the class divide, it is to predict the chemical composition of glass samples which before weathering, the unknown glass samples for testing, and a correlation analysis of chemical composition in glass samples was carried out through the appropriate method. As for the relationship between the weathering degree of cultural relics surface and the type, ornamentation and color of glass samples, the weathering degree and the type, ornamentation and color of glass samples were corresponding to unilateral factors, and the relationship was preliminarily explored by bar charts. It was concluded that the weathering degree had a certain multiple relationship with the three indexes. In order to further study the relationship quantitatively, we used the correlation thermogram to analyze. It can be concluded that the type of cultural relics has the strongest correlation with surface weathering, the correlation degree reaches 0.4, while the correlation of color and ornamentation are 0.013 and 0.12, which are relatively low.
根据玻璃样品的各项指标,对各类玻璃样品的指标进行聚类分析,并进行等级划分,预测风化前玻璃样品的化学成分,对未知玻璃样品进行检测,并通过适当的方法对玻璃样品中的化学成分进行相关分析。对于文物表面风化程度与玻璃样品的种类、纹饰、颜色之间的关系,将风化程度与玻璃样品的种类、纹饰、颜色对应为单侧因素,并通过柱状图对两者的关系进行了初步探讨。结果表明,风化程度与三项指标存在一定的倍数关系。为了进一步定量研究其关系,我们使用了相关热图进行分析。可以得出结论,文物类型与表面风化的相关性最强,相关度达到 0.4,而颜色和纹饰的相关性分别为 0.013 和 0.12,相对较低。
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引用次数: 0
Research on component content model of ancient glass products based on statistical analysis 基于统计分析的古玻璃制品成分含量模型研究
Pub Date : 2024-05-14 DOI: 10.56028/aetr.10.1.759.2024
Yiheng Lan
This paper mainly analyzes and identifies ancient glass products based on the surface characteristics and chemical composition content of ancient glass products, preprocesses the given data, establishes relevant statistical models, and uses SPSS, MATLAB, PyCharm and other software to perform statistical analysis on the surface of ancient glass. Weathering chemical composition law. To classify ancient glass types, we used the BP neural network classification prediction model to train, and the classification rules obtained depended on the difference of chemical composition content, and we tested the places where there was an accuracy dispute between the two. The classification of subclasses is based on the index evaluation using the method of hierarchy-entropy weight-coefficient of variation. The chemical components of potassium oxide and lead oxide are used to subclassify different ancient glass types. According to the evaluation results, it is proved that they are reasonable, and then the classification is made. Sensitivity analysis was performed on the results, and OAT was used to adjust its parameters to achieve the best subclassification effect.
本文主要根据古玻璃制品的表面特征和化学成分含量对古玻璃制品进行分析鉴定,对给定数据进行预处理,建立相关统计模型,并利用SPSS、MATLAB、PyCharm等软件对古玻璃表面进行统计分析。风化化学成分规律。为了对古玻璃类型进行分类,我们采用 BP 神经网络分类预测模型进行训练,得到的分类规则取决于化学成分含量的差异,并对两者存在准确率争议的地方进行测试。子类的分类基于指标评价,采用层次-熵权-变异系数的方法。利用氧化钾和氧化铅的化学成分对不同的古代玻璃类型进行子分类。根据评价结果,证明它们是合理的,然后进行分类。对结果进行了灵敏度分析,并利用 OAT 调整其参数,以达到最佳的细分效果。
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引用次数: 0
The Significance of Big Data to the Design and Transformation of Rural Art Space 大数据对乡村艺术空间设计与改造的意义
Pub Date : 2024-05-06 DOI: 10.56028/aetr.10.1.746.2024
Feifei Pei
In the rapid development of the theory of big data technology, people in the pursuit of the unique beauty of natural landscape at the same time, the design and transformation of rural art space put forward higher requirements, research scholars in the practice of research, the use of big data information transmission can be more intuitive expression of the pattern of people and landscape. According to the transformation of rural art space design in recent years, rural space, as a basic component of environmental landscape design, has begun to develop towards the direction of diversification, multi-level and digitalization under the influence of big data technology theory. Based on the understanding of the research status of big data technology, according to the basic requirements of rural art space design and transformation, this paper deeply discusses the practical significance of big data for rural art space design and transformation, in order to provide technical support for the creation of high-quality natural landscape in the new era.
在大数据技术理论的快速发展下,人们在追求自然景观独特之美的同时,对乡村艺术空间的设计与改造提出了更高的要求,研究学者在实践研究中,利用大数据信息的传递可以更加直观的表达人与景观的格局。根据近年来乡村艺术空间设计的转型,乡村空间作为环境景观设计的基本组成部分,在大数据技术理论的影响下,开始朝着多元化、多层次、数字化的方向发展。本文在了解大数据技术研究现状的基础上,根据乡村艺术空间设计与改造的基本要求,深入探讨了大数据对于乡村艺术空间设计与改造的现实意义,以期为新时代高品质自然景观的营造提供技术支持。
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引用次数: 0
Coupled Vibration Analysis of a Beam-Arch Composite Continuous Rigid Structure with Parallel Traffic Flow 平行交通流下梁拱复合连续刚性结构的耦合振动分析
Pub Date : 2024-03-26 DOI: 10.56028/aetr.9.1.888.2024
Rui Han
To investigate the structural dynamic characteristics of a beam-arch composite continuous rigid structure bridge under the action of parallel moving loads on a multi-lane highway, a joint simulation analysis program based on Easy Language and ANSYS was developed. This study was conducted using a six-span beam-arch composite continuous rigid structure bridge located in Shaanxi Province as the reference project. The research focused on the most adverse dynamic coupled responses of the main beam midspan, arch crown, and suspension rods caused by double-axle cars, double-axle trucks, and three-axle trucks on a single-direction three-lane road surface.
为研究多车道高速公路平行移动荷载作用下梁拱组合连续刚构桥的结构动力特性,开发了基于 Easy Language 和 ANSYS 的联合仿真分析程序。该研究以陕西省的一座六跨梁拱组合连续刚构桥为参考项目。研究重点是在单向三车道路面上,双轴汽车、双轴卡车和三轴卡车对主梁中跨、拱顶和悬杆造成的最不利动态耦合响应。
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引用次数: 0
Productivity Decomposition of Chinese Energy Generation Enterprises: an Index Calculation Approach Embedded in the Data Envelopment Analysis Framework 中国能源发电企业的生产力分解:数据包络分析框架中的指数计算方法
Pub Date : 2024-02-26 DOI: 10.56028/aetr.9.1.873.2024
Longfei Xue, Bingnan Yang, Fan Yang, Xue Li
To explore the development of China's energy power generation enterprises, undertake reasonable resource allocation and optimization, and promote sustainable development. We apply an index calculation approach within the data envelopment analysis framework, collecting data from 50 enterprises in 2007-2022, resulting in a total of 800 observations (16*50) for the in-depth analysis of productivity decomposition. The results highlight that during the study years, the sample enterprises experienced the following changes on average per year: an increase of 0.244% in efficiency change (effch), a decline of 0.293% in technical progress (techch), an increase of 0.119% in pure efficiency change (pech), an increase of 0.134% in scale efficiency change (sech), and a decline of 0.057% in total factor of productivity (tfpch). These findings suggest an ongoing improvement in overall efficiency, indicating that energy generators are achieving better results in terms of operations, resource utilization, and scale effects, but need to focus on research and adoption of new technologies while seeking opportunities to further enhance productivity.
为探究我国能源发电企业的发展状况,进行合理的资源配置和优化,促进可持续发展。我们采用数据包络分析框架下的指数计算方法,收集了 50 家企业 2007-2022 年的数据,共计 800 个观测值(16*50),对生产率分解进行了深入分析。结果表明,在研究期间,样本企业平均每年经历以下变化:效率变化(effch)增加 0.244%,技术进步(tech)下降 0.293%,纯效率变化(pech)增加 0.119%,规模效率变化(sech)增加 0.134%,全要素生产率(tfpch)下降 0.057%。这些研究结果表明,总体效率在不断提高,表明能源生产商在运营、资源利用和规模效应方面取得了较好的成果,但还需要重点研究和采用新技术,同时寻求进一步提高生产率的机会。
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引用次数: 0
Comfort Prediction Method for Wearable Devices: Current Progress and Future Direction 可穿戴设备的舒适度预测方法:当前进展与未来方向
Pub Date : 2024-02-26 DOI: 10.56028/aetr.9.1.868.2024
Weiyu Lin, Ziwei Chen
Falls constitute a significant health risk, particularly among the elderly, thus prompting the introduction of various wearable devices capable of fall detection. However, the majority of these devices prioritize accuracy over wearer comfort, which significantly influences user adherence and, by extension, the broader development of wearable technologies. Addressing this oversight, this review first summarizes the current methods for predicting the comfort of wearable devices, evaluating them in terms of feasibility and accuracy, reliability and effectiveness, as well as safety and privacy. Subsequently, building upon the evaluation of existing methods, this review proposes a predictive solution based on the XGBoost algorithm.
跌倒是一个重大的健康风险,尤其是在老年人中,因此,各种能够检测跌倒的可穿戴设备应运而生。然而,这些设备大多将准确性放在首位,而忽视了佩戴者的舒适性,这严重影响了用户的使用习惯,进而影响了可穿戴技术的广泛发展。针对这一疏忽,本综述首先总结了当前预测可穿戴设备舒适度的方法,并从可行性和准确性、可靠性和有效性以及安全性和隐私性方面对这些方法进行了评估。随后,在对现有方法进行评估的基础上,本综述提出了一种基于 XGBoost 算法的预测解决方案。
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引用次数: 0
Research on Improvement and Optimization Design of Mobile Switching in RPL Routing Protocol RPL 路由协议中移动交换的改进与优化设计研究
Pub Date : 2024-02-26 DOI: 10.56028/aetr.9.1.858.2024
Hong Zhou
In response to the shortcomings of the current RPL routing protocol, fully utilizing the idea of opportunistic routing, this study proposes an improved RPL routing protocol node mobility switching method to enhance the mobility support of wireless sensor IPv6 networks. Analyze existing RPL routing protocol solutions and identify their shortcomings; Analyze the challenges encountered in designing and improving routing protocols, and based on the specific application of RPL in 6LoWPAN technology, propose an overall design concept for the mobile switching method of an improved RPL routing protocol; Then, specific design will be carried out for the improved routing protocol mobile switching method, including mobile node detection, discovery and selection of the optimal parent node, link switching, etc; Finally, simulation implementation is carried out to verify its low energy consumption and low latency. Its research content involves disciplines such as the Internet of Things, computer simulation technology, and computer network technology, and has high theoretical and practical value.
针对现有RPL路由协议的不足,充分利用机会主义路由思想,本研究提出一种改进的RPL路由协议节点移动性切换方法,以增强无线传感器IPv6网络的移动性支持。分析现有的RPL路由协议方案,找出其不足之处;分析路由协议设计和改进过程中遇到的挑战,并根据RPL在6LoWPAN技术中的具体应用,提出改进型RPL路由协议移动切换方法的总体设计构想;然后对改进型路由协议移动切换方法进行具体设计,包括移动节点检测、最优父节点的发现和选择、链路切换等;最后进行仿真实现,验证其低能耗、低时延的特点。其研究内容涉及物联网、计算机仿真技术、计算机网络技术等学科,具有较高的理论和实践价值。
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引用次数: 0
Application of AES and 3DES Hybrid Encryption Algorithm Based on Optimized S Box in the Data Transmission of Human Resources and Social Security Informatization 基于优化 S 盒的 AES 和 3DES 混合加密算法在人力资源和社会保障信息化数据传输中的应用
Pub Date : 2024-02-26 DOI: 10.56028/aetr.9.1.852.2024
Lei Hua
In this paper, a hybrid encryption algorithm based on AES and 3DES is proposed to improve the security of data transmission in human resources and social security informatization. We first analyze the advantages and disadvantages of AES and 3DES, and then elaborate on why the two algorithms are used in combination. Then, this paper discusses the implementation process and mathematical principle of the hybrid algorithm. Finally, we implement the hybrid algorithm in the C + + language and present an application example.
本文提出了一种基于 AES 和 3DES 的混合加密算法,以提高人力资源和社会保障信息化中数据传输的安全性。我们首先分析了 AES 和 3DES 的优缺点,然后阐述了为什么要将两种算法结合使用。然后,本文讨论了混合算法的实现过程和数学原理。最后,我们用 C++ 语言实现了混合算法,并给出了一个应用实例。
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引用次数: 0
Treatment of Spray Paint Wastewater by a Coupled Electro-Fenton and SBR Technology 利用电-芬顿和 SBR 联用技术处理喷漆废水
Pub Date : 2024-02-26 DOI: 10.56028/aetr.9.1.862.2024
Lingli Fang, Junye Zhang, Haoran Shi
Spray painting wastewater is industrial wastewater created during the painting process; its composition is complicated, comprising a significant number of difficult biodegradable organic matter; nevertheless, the existing technology is not optimal, and the process cannot reach the desired criteria. The water quality of the entry has a higher demand for investment and occupying a vast land. High maintenance expenses, high water quality after treatment, and other issues exist. In this study, the oily spray paint wastewater was treated using an electrochemical and Fenton process, which has a high oxidation capacity, a fast oxidation rate, and a wide application of the characteristics of the Electro-Fenton process used in the pretreatment of spray paint wastewater. This study focuses on the electrochemical optimization and improvement of the Fenton technique, and it employs Fe2+ and H2O2 generated by the electrochemical approach as a continuous source of Fenton reagent. Simultaneously, electrode-related oxidation may destroy organic matter, effectively reducing the concentration of organic matter in spray paint wastewater, and when paired with the traditional Sequencing Batch Reactor Activated Sludge Process (SBR) operation treatment mode, offers a comprehensive process idea. While improving the efficiency and quality of spray paint wastewater treatment, the cost should be kept as low as feasible in order to provide effective reference schemes for spray paint wastewater treatment, allowing for future study.
喷漆废水是喷漆过程中产生的工业废水,其成分复杂,含有大量难降解的有机物,但现有技术并不理想,工艺达不到预期标准。进水水质要求较高,投资大,占地广。存在维护费用高、处理后水质差等问题。本研究采用电化学和 Fenton 工艺处理含油喷漆废水,具有氧化能力强、氧化速率快、应用范围广等特点,将电-Fenton 工艺应用于喷漆废水的预处理。本研究主要对 Fenton 技术进行电化学优化和改进,采用电化学方法产生的 Fe2+ 和 H2O2 作为 Fenton 试剂的持续来源。同时,电相关氧化可破坏有机物,有效降低喷漆废水中有机物的浓度,与传统的序批式反应器活性污泥法(SBR)运行处理模式搭配,提供了一种综合的工艺思路。在提高喷漆废水处理效率和质量的同时,应尽可能降低成本,以便为喷漆废水处理提供有效的参考方案,供今后研究参考。
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引用次数: 0
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Advances in Engineering Technology Research
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