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The technology of Formula 1 racing car 一级方程式赛车的技术
Pub Date : 2024-07-26 DOI: 10.54254/2755-2721/70/20241004
Zizhao Lian
Formula 1 racing is held every year. It dissects every part of an F1 car. Through the observation of F1 cars and watching races, the research data comes from real-time data published by major teams and articles published by well-known Chinese papers. If the power source is fixed, that is, the same pressure air is used as the power, and the simulation software is used to quickly and efficiently complete the design of the car model, to achieve higher speed with less air resistance. Everyone can get a clearer and more accurate picture of the structure of the F1 car. And better study the generation and utilization of aerodynamics. Based on the currently available research, this paper know that F1 cars have been pursuing the ultimate ground flight through constant changes to the body. The Formula 1 car is already the worlds most extreme invention of aerodynamics.
一级方程式赛车每年都会举行。它剖析了 F1 赛车的每一个部件。通过对 F1 赛车的观察和观看比赛,研究数据来源于各大车队公布的实时数据和国内知名报刊发表的文章。如果动力源固定,即使用相同压力的空气作为动力,利用仿真软件快速高效地完成赛车模型的设计,以较小的空气阻力实现更高的速度。大家可以更清晰、准确地了解 F1 赛车的结构。并更好地研究空气动力学的产生和利用。根据目前已有的研究,本文知道 F1 赛车通过对车身的不断改变,一直在追求地面飞行的极致。一级方程式赛车已经是世界上最极致的空气动力学发明。
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引用次数: 0
Optimizing urban ecosystems through green and blue infrastructure: Strategies for sustainability, resilience, and justice 通过绿色和蓝色基础设施优化城市生态系统:可持续性、复原力和公正性战略
Pub Date : 2024-07-26 DOI: 10.54254/2755-2721/72/20240985
Yanxi Yang, Xiaohan Li, Duruo Wang, Zuhang Liu
This article examines the roles of Green and Blue Infrastructures (GBIs) in enhancing urban sustainability, resilience, and environmental justice. It highlights how GBIs promote biodiversity, reduce pollution, and increase climate resilience through integrating technologies like the Internet of Things (IoT), Artificial Intelligence (AI), and digital twinning. These innovations improve the management and operational efficiency of urban planning. The study emphasizes the socio-economic and health benefits provided by GBIs, which incorporate natural elements into urban areas to foster environmental equity and resource accessibility. Advanced technological interventions are crucial for optimizing GBI functionality, ensuring urban environments are resilient and sustainable. The paper advocates for a holistic approach involving community engagement and policy reforms to distribute GBI benefits equitably, aiming to create urban ecosystems that are environmentally sound, socially just, and economically viable.
本文探讨了绿色和蓝色基础设施(GBI)在提高城市可持续性、复原力和环境正义方面的作用。文章强调了绿色和蓝色基础设施如何通过整合物联网(IoT)、人工智能(AI)和数字孪生等技术来促进生物多样性、减少污染和提高气候适应性。这些创新提高了城市规划的管理和运营效率。研究强调了全球生物多样性倡议带来的社会经济和健康效益,这些倡议将自然元素融入城市地区,以促进环境公平和资源可得性。先进的技术干预对于优化全球生物多样性保护区的功能、确保城市环境的弹性和可持续性至关重要。本文主张采用一种涉及社区参与和政策改革的整体方法来公平分配全球生物多样性效益,旨在创建无害环境、社会公正和经济可行的城市生态系统。
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引用次数: 0
Problems and prospects of rural energy transformation in China 中国农村能源转型的问题与前景
Pub Date : 2024-07-26 DOI: 10.54254/2755-2721/70/20240976
Xinyue Fan
In recent years, Chinas rural energy supply security capacity has been enhanced, and the adjustment of energy structure has achieved remarkable results, but there are still some problems: The low utilization rate of waste energy in rural areas restricts the comprehensive utilization of resources and environmental protection, the level of rural energy consumption is always in the stage of development, and the lagging construction of rural energy socialized service system restricts the development of rural energy. In view of the problems and challenges faced by Chinas rural energy development, focus on rural energy consumption. This paper analyzes the basic situation of energy development in Chinas rural areas (taking Lantian County of Shaanxi Province as an example). Under the special premise of Chinas national conditions, the specific characteristics of different development in different regions are integrated, and the traditional fossil energy is gradually replaced by the storage and utilization of rural waste and new energy. The key issues such as the construction of rural energy service system and policy guidance are studied, and the measures and suggestions for promoting the scientific development of rural energy in China are put forward.
近年来,我国农村能源供应保障能力不断增强,能源结构调整成效显著,但仍存在一些问题:农村废弃能源利用率低制约资源综合利用和环境保护,农村能源消费水平始终处于发展阶段,农村能源社会化服务体系建设滞后制约农村能源发展。针对中国农村能源发展面临的问题和挑战,聚焦农村能源消费。本文分析了中国农村能源发展的基本情况(以陕西省蓝田县为例)。在中国国情的特殊前提下,结合不同地区发展的具体特点,通过农村废弃物的储存和利用以及新能源的利用,逐步取代传统的化石能源。研究农村能源服务体系建设和政策引导等关键问题,提出促进我国农村能源科学发展的对策建议。
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引用次数: 0
Reduce energy consumption - causes of CMOS inverter switching delay and its influencing factors 降低能耗 - CMOS 逆变器开关延迟的原因及其影响因素
Pub Date : 2024-07-26 DOI: 10.54254/2755-2721/78/20240466
Chenxi Wu
This paper offers a comprehensive examination of the Complementary Metal-Oxide-Semiconductor (CMOS) inverter, a quintessential component in contemporary digital integrated circuits, renowned for its minimal power consumption, robust noise resistance, and adaptability. The focus of this investigation is the switching delay of the CMOS inverter, a pivotal attribute that exerts substantial influence on the overall functionality of the circuitry. This discourse undertakes a detailed exploration of the factors contributing to the CMOS inverter switching delay, dissecting the influence of both intrinsic and extrinsic elements. Initially, the analysis delineates the origins of the switching delay in CMOS inverters, categorizing them into internal and external determinants. Subsequently, the study meticulously examines methodologies to modulate these factors, thereby achieving effective control over the delay. By implementing strategic optimizations, this research aims to diminish latency and enhance operational efficiency. Through a theoretical lens, this paper elucidates the complex interplay between these inherent and external factors, culminating in the optimization of the CMOS inverter switching delay. The insights garnered from this analysis are poised to offer a substantive theoretical foundation for the design of more efficient and reliable digital circuits in the current technological milieu.
本文对互补金属氧化物半导体(CMOS)反相器进行了全面研究,CMOS 反相器是当代数字集成电路中的重要元件,以功耗低、抗噪声能力强和适应性强而著称。本研究的重点是 CMOS 逆变器的开关延迟,这是一个对电路整体功能产生重大影响的关键属性。本文详细探讨了导致 CMOS 逆变器开关延迟的因素,剖析了内在和外在因素的影响。首先,分析描述了 CMOS 逆变器开关延迟的起源,将其分为内部和外部决定因素。随后,研究细致地探讨了调节这些因素的方法,从而实现对延迟的有效控制。通过实施战略性优化,本研究旨在减少延迟并提高运行效率。通过理论视角,本文阐明了这些内在和外在因素之间复杂的相互作用,最终实现了 CMOS 逆变器开关延迟的优化。从这一分析中获得的见解将为在当前技术环境下设计更高效、更可靠的数字电路奠定坚实的理论基础。
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引用次数: 0
Dynamics and mitigation strategies of knock in hydrogen-fueled internal combustion engines 氢燃料内燃机爆震的动力学和缓解策略
Pub Date : 2024-07-26 DOI: 10.54254/2755-2721/78/20240512
Anye Zhong
In the context of utilizing hydrogen as a fuel for internal combustion engines, it is crucial to address its tendency to induce knock more readily under certain conditions compared to gasoline. Knock not only reduces fuel efficiency but also has the potential to inflict detrimental effects on engine components. It is generally believed that knock is primarily caused by the spontaneous combustion of the end-gas mixture. Current research focuses on the frequency, intensity, and statistical characteristics of knock signals.This study aims to introduce two prevalent and effective methods for mitigating knock: increasing the Exhaust Gas Recirculation (EGR) ratio and water injection into the engine. Experimental observations suggest that at low rotational speeds (n=900 rpm), the amplitude spectra of knock induced by hydrogen and gasoline show similarities. However, at higher speeds (n>3000 rpm), the amplitude of hydrogen-induced knock not only exhibits a greater number of peak values but also intensifies in strength. Notably, the efficacy of increasing the EGR ratio diminishes at high speeds, potentially due to the propensity of methane to also cause knock under high-temperature conditions. In contrast, water injection, while generally effective, may adversely impact the lifespan of engine components.In summary, effective suppression of knock in hydrogen-fueled internal combustion engines is vital for accelerating the adoption of hydrogen in the power sector and making significant contributions to environmental conservation. This paper aims to delve into the analysis of these methods effectiveness and proposes directions for future research.
在利用氢气作为内燃机燃料方面,关键是要解决氢气在某些条件下比汽油更容易产生爆震的问题。爆震不仅会降低燃料效率,还有可能对发动机部件造成有害影响。一般认为,爆震主要是由尾气混合物的自燃引起的。目前的研究主要集中在爆震信号的频率、强度和统计特征上。本研究旨在介绍两种普遍有效的缓解爆震的方法:提高废气再循环(EGR)比率和向发动机喷水。实验观察表明,在低转速(n=900 rpm)下,氢气和汽油诱发的爆震振幅谱显示出相似性。然而,在转速较高时(n>3000 rpm),氢气诱导的爆震振幅不仅峰值更多,而且强度也更大。值得注意的是,提高 EGR 比率的效果在高速时会减弱,这可能是由于甲烷在高温条件下也会导致爆震。总之,有效抑制氢燃料内燃机的爆震对于加快氢气在动力领域的应用以及为环境保护做出重大贡献至关重要。本文旨在深入分析这些方法的有效性,并提出未来的研究方向。
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引用次数: 0
Convolutional neural network model compression method 卷积神经网络模型压缩方法
Pub Date : 2024-07-26 DOI: 10.54254/2755-2721/70/20241029
Likai Chu
In the field of deep learning, Convolutional Neural Networks (CNN) has become a focal point due to its multi-layered structure and wide application. The success of deep learning is due to the model has more layers and more parameters, which gives it a stronger nonlinear fitting ability. Traditionally, CNNs are primarily run on Central Processing Units (CPUs) and Graphics Processing Units (GPUs). However, CPUs have lower computational power, and GPUs consume a lot of energy. In contrast, Field-Programmable Gate Arrays (FPGAs) offer high parallelism, low power consumption, flexible programming, and rapid development cycles. These combined advantages make FPGAs more suitable for the forward inference processes of deep learning compared to other platforms. However, CNNs has the characteristics of parameter redundancy, the storage cost of deploying it on FPGA is too high. In order to apply CNNs to FPGA, we need to optimize CNNs for compression. Because after compression, This paper analyzes several specific cases of model compression for convolutional neural networks, and summarizes and compares the efficient methods of model compression. The results show that the model compression methods are mainly divided into the structure change of convolutional neural network and the quantization of parameters. The two compression methods can be cascaded at the same time to achieve a better optimization effect.
在深度学习领域,卷积神经网络(CNN)因其多层结构和广泛应用而成为焦点。深度学习的成功在于其模型具有更多层次和更多参数,从而使其具有更强的非线性拟合能力。传统上,CNN 主要在中央处理器(CPU)和图形处理器(GPU)上运行。然而,CPU 的计算能力较低,而 GPU 则消耗大量能源。相比之下,现场可编程门阵列(FPGA)具有并行性高、功耗低、编程灵活、开发周期快等优点。与其他平台相比,这些综合优势使 FPGA 更适合深度学习的前向推理过程。然而,CNNs 具有参数冗余的特点,将其部署在 FPGA 上的存储成本过高。为了将 CNN 应用于 FPGA,我们需要对 CNN 进行压缩优化。因为压缩后,本文分析了卷积神经网络模型压缩的几种具体情况,并总结比较了模型压缩的高效方法。结果表明,模型压缩方法主要分为卷积神经网络的结构改变和参数量化。这两种压缩方法可以同时级联,以达到更好的优化效果。
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引用次数: 0
The electronic stopping power of self-irradiated molybdenum in different charge states 不同电荷状态下自辐照钼的电子阻挡力
Pub Date : 2024-07-26 DOI: 10.54254/2755-2721/70/20240998
Yike Wang
Molybdenum is not only an excellent photovoltaic material but also a crucial component in semiconductors. However, its high bandgap restricts its application in optoelectronic devices. This limitation arises primarily because the energy barrier between photogenerated electron-hole pairs cannot be directly overcome by sunlight. Self-irradiation can overcome these barriers, allowing efficient separation of photogenerated electrons and holes, making molybdenum an excellent light-absorbing material. By altering the charge state of molybdenum-based materials, their light absorption can be adjusted. This project aims to systematically study the optical properties and electronic stopping power of molybdenum-based materials in different charge states through theoretical calculations and experiments.
钼不仅是一种优良的光伏材料,也是半导体的重要组成部分。然而,钼的高带隙限制了它在光电设备中的应用。造成这种限制的主要原因是光生电子-空穴对之间的能量势垒无法直接被太阳光克服。自辐射可以克服这些障碍,使光生成的电子和空穴有效分离,从而使钼成为一种出色的光吸收材料。通过改变钼基材料的电荷状态,可以调整其光吸收能力。本项目旨在通过理论计算和实验,系统研究钼基材料在不同电荷状态下的光学性质和电子阻挡能力。
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引用次数: 0
Analysis of geological disaster management and ecological restoration measures in mining engineering 采矿工程中的地质灾害治理与生态恢复措施分析
Pub Date : 2024-07-26 DOI: 10.54254/2755-2721/70/20240989
Zeguang Yang
This paper provides a comprehensive analysis of the current effective measures for managing geological disasters and ecological damage caused by mining engineering development. The discussion primarily focuses on two aspects: engineering technology and ecological management. It is clear that slope stabilization technology, drainage and waterproof system construction, vegetation restoration, and artificial humidity construction play active roles in the management of geological disasters and ecological restoration in mining areas. These measures not only effectively control geological disasters but also significantly improve the ecological environment, enhance the self-recovery capacity of regional ecosystems, and achieve harmonious development of society, economy, and environment.
本文全面分析了当前治理矿山工程开发造成的地质灾害和生态破坏的有效措施。主要从工程技术和生态治理两个方面进行论述。可以看出,边坡稳定技术、排水防水系统建设、植被恢复、人工湿地建设等在矿区地质灾害治理和生态恢复中发挥着积极的作用。这些措施不仅有效地控制了地质灾害,而且极大地改善了生态环境,提高了区域生态系统的自我恢复能力,实现了社会、经济、环境的和谐发展。
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引用次数: 0
Advanced AI and ML techniques in cybersecurity: Supervised and unsupervised learning, reinforcement learning, and neural networks in threat detection and response 网络安全中的高级人工智能和 ML 技术:威胁检测和响应中的监督和非监督学习、强化学习和神经网络
Pub Date : 2024-07-26 DOI: 10.54254/2755-2721/82/2024glg0054
Xianghui Meng
In the rapidly advancing field of AI and ML, this paper explores their pivotal role in transforming cybersecurity. Highlighting the integration of sophisticated techniques like deep learning for intrusion detection and reinforcement learning for adaptive threat modeling, it emphasizes the shift towards AI-driven cybersecurity solutions. The study meticulously analyzes supervised and unsupervised learning's impact on threat detection accuracy and the dynamic capabilities of neural networks in real-time threat identification. It reveals how these methodologies enhance digital defenses against complex cyber threats, underscoring the theoretical underpinnings and practical applications of AI and ML in cybersecurity. The paper also discusses the challenges and future directions, contributing significant insights into the evolving landscape of cybersecurity technologies. This comprehensive research background sets the stage for understanding the unique contributions and potential of AI and ML in strengthening cybersecurity measures.
在快速发展的人工智能和 ML 领域,本文探讨了它们在网络安全变革中的关键作用。本文重点介绍了入侵检测深度学习和自适应威胁建模强化学习等复杂技术的集成,强调了向人工智能驱动的网络安全解决方案的转变。研究细致分析了监督和非监督学习对威胁检测准确性的影响,以及神经网络在实时威胁识别中的动态能力。它揭示了这些方法如何增强针对复杂网络威胁的数字防御,强调了人工智能和 ML 在网络安全中的理论基础和实际应用。论文还讨论了面临的挑战和未来的发展方向,对网络安全技术不断发展的前景提出了重要见解。这一全面的研究背景为了解人工智能和 ML 在加强网络安全措施方面的独特贡献和潜力奠定了基础。
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引用次数: 0
Snapchat for user privacy and emotional communication phenomenon Snapchat 的用户隐私和情感交流现象
Pub Date : 2024-07-25 DOI: 10.54254/2755-2721/55/20241520
Jizhuo Yang
The article describes Snapchat as an example of a social software that violates user privacy and protects user privacy, which can be reflected from it. The article collates some of Snapchats feature innovations and unique features (compared to other social software) and explains why it has been successful in a short period of time. Most of the papers on Snapchat have focused on Snapchats marketing strategy, rather than the software itself and its impact on users. Therefore, the author of this paper considers from the perspective of users to supplement Snapchats use and protection of user privacy. In addition, this paper discusses Snapchats protection of user privacy and the innovation of its functions, and compares it with Chinese social media, which puts forward more possibilities for the development of social media.
文章将 Snapchat 描述为一个社交软件侵犯用户隐私和保护用户隐私的例子,从中可以反映出这一点。文章整理了 Snapchat 的一些创新和独特功能(与其他社交软件相比),并解释了它为何能在短时间内取得成功。大多数关于 Snapchat 的论文都侧重于 Snapchats 的营销策略,而不是软件本身及其对用户的影响。因此,本文作者从用户的角度出发,对 Snapchats 的使用和用户隐私保护进行了补充。此外,本文还探讨了Snapchats对用户隐私的保护及其功能创新,并与中国社交媒体进行了比较,为社交媒体的发展提出了更多可能性。
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引用次数: 0
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Applied and Computational Engineering
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