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Research on Energy Recovery System 能源回收系统研究
Ziheng Huang
As the number of electric vehicles continues to grow globally, more and more advanced technologies are being applied to electric vehicles. Energy recovery technology is a crucial part of them. The basic principle of how electric vehicles work is to convert chemical energy into electrical energy, and then convert electronic energy into kinetic energy. Actually, the ability of deceleration is necessary for electric vehicle. However, large amount of energy may lose due to this period. So, people developed energy in order to recover this energy.This study contain the introduction of two different types of energy recovery system, electronic energy recovery system and mechanical energy recovery system. Including two major advancements in this field in recent decades which contribute a lot in electronic recovery system. In addition, I introduced some latest research on mechanical energy recovery system which utilized hydro-mechanical technology. Most of my analysis are based on ECE (European standard operating conditions) . Worth noticing that more areas for expansion of this technology are also mentioned in my essay such as rotorcrafts and motor-driven tanks which are the latest products.
随着全球电动汽车数量的不断增长,越来越多的先进技术被应用到电动汽车上。能量回收技术是其中的重要组成部分。电动汽车工作的基本原理是将化学能转化为电能,再将电能转化为动能。事实上,减速能力是电动汽车所必需的。但是,大量的能量可能会在这段时间内损失掉。本研究介绍了两种不同类型的能量回收系统,即电子能量回收系统和机械能量回收系统。其中包括近几十年来该领域的两大进步,它们对电子回收系统做出了巨大贡献。此外,我还介绍了利用水力机械技术的机械能量回收系统的一些最新研究。我的分析大多基于 ECE(欧洲标准操作条件)。值得注意的是,我在文章中还提到了该技术的更多扩展领域,如最新产品转子船和电机驱动水箱。
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引用次数: 0
Moving museums into the Metaverse 将博物馆搬进 Metaverse
Ruier Zhang
In recent years, the fusion of advanced technologies with virtual reality has opened new cultural preservation and engagement avenues. This dissertation explores the innovative application of Neural Radiance Fields (NeRF) technology in transcending the boundaries of physical museums and transporting their treasures into the metaverse. While classical computer vision has seen substantial progress, a developing intersection exists between NeRF and cultural heritage preservation. This study bridges this gap by introducing an approach that amalgamates NeRF techniques with the rich cultural wealth of museums.The conventional museum experience is extended into the metaverse through a novel methodology that leverages NeRF’s capabilities. The core objective is to enable individuals to explore digitized museum artifacts with unparalleled realism. NeRF technology captures intricate visual details and enables immersive interactions by rendering scenes with volumetric precision, transforming how cultural artifacts are experienced and understood.This dissertation delves into the technical intricacies of integrating NeRF technology into the metaverse. The implementation involves the reconstruction of 3D artifact models. The results underscore the potential of NeRF to reshape the cultural heritage landscape by bridging the gap between traditional museums and the boundless possibilities of the metaverse.
近年来,先进技术与虚拟现实技术的融合开辟了新的文化保护和参与途径。本论文探讨了神经辐射场(NeRF)技术在超越实体博物馆的界限并将其珍品传送到元宇宙中的创新应用。虽然经典计算机视觉技术已经取得了长足的进步,但 NeRF 与文化遗产保护之间的交叉点仍在不断发展。本研究通过引入一种将 NeRF 技术与博物馆丰富的文化财富相结合的方法,弥补了这一差距。通过一种利用 NeRF 功能的新方法,传统的博物馆体验被扩展到了元宇宙。其核心目标是让个人能够以无与伦比的逼真度探索数字化的博物馆文物。NeRF 技术可以捕捉到错综复杂的视觉细节,并通过以体积精度渲染场景来实现身临其境的互动,从而改变人们体验和理解文物的方式。实施过程涉及三维文物模型的重建。研究结果强调了 NeRF 的潜力,即通过弥合传统博物馆与元宇宙无限可能性之间的鸿沟,重塑文化遗产景观。
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引用次数: 0
Text classification by BERT-Capsules 通过 BERT-Capsules 进行文本分类
Minghui Guo
This paper presents a model that integrates a BERT encoder with a Capsule network, eliminating the traditional fully connected layer designed for downstream classification tasks in BERT in favor of a capsule layer. This capsule layer consists of three main modules: the representation module, the probability module, and the reconstruction module. It transforms the final hidden layer output of BERT into the final activation capsule probabilities to classify the text. By applying the model to sentiment analysis and text classification tasks, and comparing the test results with various BERT variants, the performance across all metrics was found to be superior. Observing the model’s handling of multiple entities and complex relationships, sentences with high ambiguity were extracted to observe the probability distribution of all capsules and compared with RNN-Capsule. It was found that the activation capsule probabilities for BERT-Capsule were significantly higher than the rest, and more pronounced than RNN-Capsule, indicating the model’s exceptional ability to process ambiguous information.
本文提出了一种将 BERT 编码器与胶囊网络集成的模型,取消了 BERT 中为下游分类任务设计的传统全连接层,转而使用胶囊层。胶囊层由三个主要模块组成:表示模块、概率模块和重构模块。它将 BERT 的最终隐藏层输出转化为最终激活胶囊概率,从而对文本进行分类。通过将该模型应用于情感分析和文本分类任务,并将测试结果与不同的 BERT 变体进行比较,我们发现该模型在所有指标上都表现优异。为了观察该模型处理多实体和复杂关系的能力,我们提取了含混度较高的句子,观察所有胶囊的概率分布,并与 RNN-Capsule 进行比较。结果发现,BERT-Capsule 的激活胶囊概率明显高于其他模型,而且比 RNN-Capsule 更明显,这表明该模型具有处理模糊信息的卓越能力。
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引用次数: 0
Sentiment Analysis by Double Classification of Takeaway Platform Reviews Based on Deep Learning LSTM Models 基于深度学习 LSTM 模型的外卖平台评论双重分类情感分析
Yunzhi Liao
Sentiment analysis has a wide range of applications in the fields of opinion analysis, sentiment dialog, and product reviews. However, the sentiment information expressed in texts under different topics varies greatly; for example, a model that performs well on a movie review set has poor model classification on a social platform review set due to inconsistent recognition of antiphonal phrases, different expression of emoji sentiment, and missing contextual information. In this paper, the authors focus on tens of thousands of latest reviews of Chinese takeout platforms Meituan and Elema, and use the LSTM model in deep learning to double classify the data (positive and negative). This paper analyzes the performance of LSTM models in the field of sentiment analysis of takeout reviews and concludes that domain-specific text sentiment analysis requires specific analysis.
情感分析在意见分析、情感对话和产品评论等领域有着广泛的应用。然而,不同主题下的文本所表达的情感信息千差万别,例如,在电影评论集上表现良好的模型,在社交平台评论集上的模型分类效果却很差,原因在于反调短语识别不一致、表情符号情感表达不同、上下文信息缺失等。在本文中,作者重点研究了中国外卖平台美团和 "俺来也 "的数万条最新评论,并使用深度学习中的 LSTM 模型对数据进行了双重分类(正面和负面)。本文分析了 LSTM 模型在外卖评论情感分析领域的表现,并得出结论:特定领域的文本情感分析需要具体分析。
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引用次数: 0
Research on the Innovation and Development of Gravitational Wave Detection Technology 引力波探测技术的创新与发展研究
Fengxi Li
According to Einstein’s general theory of relativity, gravity is described as the curvature of space-time caused by gravitational sources, and to prove the existence of gravitational waves, many scientific research institutes around the world have begun to build equipment to try to detect gravitational waves in the vast background signals of the universe. At present, gravitational waves have been detected by many scientific research institutions and scientists. Now, the detection of gravitational waves has shifted to the direction of high precision and accuracy. This paper starts with the laser interferometer, the most basic instrument for gravitational wave detection. It expounds on the latest development progress and key technologies of gravitational wave detection in the current physical world, including noise suppression and gravitational wave detection spacecraft projects. In terms of laser interferometers, this paper describes their principle and key technologies and puts forward the difficult problems that still need to be tackled and studied. In terms of noise suppression, this paper describes the noise and interference that may be generated and how to suppress the noise to avoid interfering with the accuracy of the experiment. It also points out the shortcomings of current noise suppression techniques. For gravitational wave detection spacecraft projects, this paper first focuses on several key projects in the world, then describes the technologies and shortcomings of spacecraft, and puts forward the direction of improvement and in-depth research on these technologies. This paper aims to summarize the key technologies of gravitational wave detection in the world today and point out the direction of its future development.
根据爱因斯坦的广义相对论,引力被描述为由引力源引起的时空弯曲,为了证明引力波的存在,世界上许多科研机构开始建造设备,试图在浩瀚的宇宙背景信号中探测引力波。目前,引力波已经被许多科研机构和科学家探测到。现在,引力波的探测已经转向高精度、高准确度的方向。本文从引力波探测最基本的仪器--激光干涉仪谈起。它阐述了当前物理世界中引力波探测的最新发展进展和关键技术,包括噪声抑制和引力波探测航天器项目。在激光干涉仪方面,本文介绍了其原理和关键技术,并提出了仍需攻克和研究的难点问题。在噪声抑制方面,本文介绍了可能产生的噪声和干扰,以及如何抑制噪声以避免干扰实验精度。本文还指出了当前噪声抑制技术的不足之处。对于引力波探测航天器项目,本文首先重点介绍了世界上的几个重点项目,然后阐述了航天器的技术和不足,并提出了改进和深入研究这些技术的方向。本文旨在总结当今世界引力波探测的关键技术,并指出其未来的发展方向。
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引用次数: 0
A Survey: Industrial Anomaly Detection based on Data Mining 调查:基于数据挖掘的工业异常检测
Jinrui Li
Industrial defect detection plays a crucial role in modern manufacturing. Identifying and addressing inferior products contributes to enhancing product quality, strengthening product competitiveness, and increasing customer satisfaction. Existing surveys of industrial defect detection are relatively scarce and struggle to reflect the latest development trends. Therefore, this article provides a more detailed and in-depth survey of industrial defect detection technologies. The article first reviews the development history of industrial defect detection methods. It then covers three aspects: the concept of general anomalies, concepts related to image anomaly detection, and industrial defects, providing an overview of industrial defect detection in these areas. It also summarizes the current state of development, as well as the advantages and disadvantages of each aspect. Additionally, the article identifies the limitations of industrial detection methods in practical industrial applications. Finally, it looks forward to the future development trends and potential research directions in this field, aiming to inspire future research.
工业缺陷检测在现代制造业中发挥着至关重要的作用。识别和处理劣质产品有助于提高产品质量、增强产品竞争力和提高客户满意度。现有的工业缺陷检测调查相对较少,难以反映最新的发展趋势。因此,本文对工业缺陷检测技术进行了更详细、更深入的研究。文章首先回顾了工业缺陷检测方法的发展历程。然后从一般异常的概念、图像异常检测的相关概念和工业缺陷三个方面,对这些领域的工业缺陷检测进行了概述。文章还总结了各方面的发展现状和优缺点。此外,文章还指出了工业检测方法在实际工业应用中的局限性。最后,文章展望了该领域的未来发展趋势和潜在研究方向,旨在为未来研究提供启发。
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引用次数: 0
MRI Applications and Research in Materials Science 材料科学中的核磁共振成像应用与研究
Yu Chen
Magnetic resonance imaging (MRI) has emerged as an indispensable noninvasive technique in materials research, offering comprehensive insights into the interior composition of diverse materials while preserving their integrity. The primary objective of this study is to investigate the utilization of magnetic resonance imaging to examine porous materials, biomaterials, polymers, and composites. This research aims to emphasize the benefits of MRI in the context of non-destructive testing and analysis. Magnetic resonance imaging (MRI) is advantageous due to its capacity to provide exceptional spatial resolution, facilitating the observation of minute structures inside porous materials. This capability significantly contributes to comprehending fluid dynamics and the distribution of pores within such materials. Within the field of biomaterials, magnetic resonance imaging plays a pivotal role in the examination of tissue interactions and drug delivery systems. This imaging technique provides high-resolution visualizations essential for the meticulous research of cellular-level phenomena. The significance of technology in the realm of polymers and composite materials is noteworthy, as it plays a crucial role in facilitating the identification of heterogeneities and the analysis of phase distribution. Nevertheless, various issues need improvement, including signal strength, resolution, and the reaction of materials to magnetic fields. It is advisable to employ advanced imaging techniques, implement signal improvements, and make material-specific adjustments to address these constraints.
磁共振成像(MRI)已成为材料研究领域不可或缺的非侵入性技术,可在保持材料完整性的同时全面了解各种材料的内部组成。本研究的主要目的是探讨如何利用磁共振成像检查多孔材料、生物材料、聚合物和复合材料。这项研究旨在强调磁共振成像在无损检测和分析方面的优势。磁共振成像(MRI)的优势在于能够提供超高的空间分辨率,便于观察多孔材料内部的微小结构。这种能力大大有助于理解流体动力学以及此类材料内部孔隙的分布情况。在生物材料领域,磁共振成像在检查组织相互作用和给药系统方面发挥着关键作用。这种成像技术可提供高分辨率的可视化图像,对于细致研究细胞级现象至关重要。该技术在聚合物和复合材料领域的意义值得注意,因为它在促进异质性识别和相分布分析方面发挥着至关重要的作用。尽管如此,仍有许多问题需要改进,包括信号强度、分辨率和材料对磁场的反应。建议采用先进的成像技术,改进信号,并针对具体材料进行调整,以解决这些制约因素。
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引用次数: 0
The Image Classification Algorithm Was Implemented on The MNIST Data Set 在 MNIST 数据集上实施图像分类算法
Wayuan Xiao
In the current era of rapid development of science and technology, the recognition and classification of digital images is the key to solving many problems, such as the application of license plate recognition, document digitization, and remote sensing image surface classification. Based on the MNIST handwritten numerical data set collected by the National Institute of Standards and Technology (NIST), this report uses Python language and PyTorch programming framework to construct a convolutional neural network (CNN) structure and practice and experience the image classification of handwritten digits in the MNIST data set.
在科学技术飞速发展的今天,数字图像的识别与分类是解决车牌识别、文档数字化、遥感图像表面分类等诸多问题的关键。本报告基于美国国家标准与技术研究院(NIST)收集的 MNIST 手写数字数据集,使用 Python 语言和 PyTorch 编程框架构建了卷积神经网络(CNN)结构,并对 MNIST 数据集中的手写数字进行了图像分类实践和体验。
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引用次数: 0
The framework of multi-target tracking based on neural network and motion model prediction 基于神经网络和运动模型预测的多目标跟踪框架
Tianyang Li
Multi-target tracking technology is a key problem in many application areas, including robotics, video surveillance, and autonomous driving, and its purpose is to find tracking targets that match the characteristics in a continuous image or sensing sequence information and to form a reasonable trajectory for each target. This paper proposed a method that combines the two main existing approaches for multi-target tracking by applying the Kalman filter for motion model prediction to support the neural network target tracking under poor visibility and target shield.
多目标跟踪技术是机器人、视频监控、自动驾驶等众多应用领域的关键问题,其目的是在连续的图像或传感序列信息中找到符合特征的跟踪目标,并为每个目标形成合理的轨迹。本文提出了一种结合现有两种主要方法的多目标跟踪方法,即应用卡尔曼滤波器进行运动模型预测,以支持能见度差和目标遮挡情况下的神经网络目标跟踪。
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引用次数: 0
Prospects for silicon being replaced by other materials in integratedcircuit applications 硅在集成电路应用中被其他材料取代的前景
Yuxuan Liu, Ziyu Wang, Sichen Lv
Currently, silicon is the most widely used semiconductor material. However, in recent years, the development of integrated circuits has encountered more and more limitations, among which the physical characteristics of single-crystal silicon materials are an important reason. With the expansion of integrated circuit scale and the continuous reduction of manufacturing processes, silicon has gradually reached its physical limit. At the same time, silicon has a higher calorific value and a higher performance loss. Therefore, people are actively seeking alternatives to silicon in integrated circuits. This paper reviews the characteristics of three new semiconductor materials, graphene, silicon carbide, gallium nitride, and current research on their applications. Silicon carbide and gallium nitride materials have shown outstanding performance in power-integrated circuits, while graphene has many applications. However, they still have many defects before being used on a large scale. In short, in integrated circuit applications, when new materials replace silicon, many problems remain to be solved.
目前,硅是应用最广泛的半导体材料。但近年来,集成电路的发展遇到了越来越多的限制,其中单晶硅材料的物理特性是一个重要原因。随着集成电路规模的扩大和制造工艺的不断减少,硅已逐渐达到其物理极限。同时,硅的热值较高,性能损耗较大。因此,人们正在积极寻求硅在集成电路中的替代品。本文综述了石墨烯、碳化硅、氮化镓三种新型半导体材料的特性及其应用研究现状。碳化硅和氮化镓材料在功率集成电路中表现突出,而石墨烯也有很多应用。然而,它们在大规模应用之前仍存在许多缺陷。总之,在集成电路应用中,当新材料取代硅时,仍有许多问题有待解决。
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引用次数: 0
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Science and Technology of Engineering, Chemistry and Environmental Protection
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