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Research on AEB-P Control Strategy Considering Braking Process Comfort 考虑制动过程舒适性的 AEB-P 控制策略研究
Pub Date : 2024-05-10 DOI: 10.22158/asir.v8n2p57
Peng Yang, Ying Lu, Ye Chen
A control approach for the pedestrian-oriented automobile automatic emergency braking system (AEB-P) that takes driving comfort into account is suggested in an effort to further optimize the AEB-P system's control algorithm. Firstly, for the AEB-P assessment standard of C-NCAP, a braking safety distance model that takes the driver's comfort into account during braking is created. The next step was to construct a hierarchical controller using PID and MPC principles. Lastly, CarSim and Matlab/Simulink are used to build and validate the test scenarios and control methods. The simulation results demonstrate that both ride comfort and driving safety can be guaranteed by the suggested control technique.
为进一步优化面向行人的汽车自动紧急制动系统(AEB-P)的控制算法,提出了一种考虑驾驶舒适性的控制方法。首先,针对 C-NCAP 的 AEB-P 评估标准,创建了一个制动安全距离模型,该模型考虑了驾驶员在制动过程中的舒适性。下一步是利用 PID 和 MPC 原理构建分层控制器。最后,使用 CarSim 和 Matlab/Simulink 建立并验证测试场景和控制方法。仿真结果表明,建议的控制技术可以保证乘坐舒适性和驾驶安全性。
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引用次数: 0
The Origin of Geomagnetism 地磁的起源
Pub Date : 2024-05-08 DOI: 10.22158/asir.v8n2p47
Kexin Yao
The paper clarifies that a magnetic field is not a real material existence and concludes that a magnetic field is essentially a contracting electric field in motion. Based on this new principle, all electromagnetic laws can be derived and proven. Experiments confirm that there is indeed an electrostatic field around a static magnetic field, which is a powerful scientific proof of the new principle that a magnetic field is a contracting electric field in motion. The paper believes that the westward movement of negative ion-containing air in the Earth's upper layers is the fundamental reason for the generation of geomagnetism. Due to the fact that a magnetic field is a contracting electric field in motion, the author determines that people in different motion situations will see different moving electric fields on the Earth, namely, they will see different geomagnetic fields. He further determines that an observer outside the Earth who is stationary relative to the Sun will see a strong geomagnetic field with the North Pole being the South pole.
本文阐明了磁场并非真实的物质存在,并得出结论:磁场本质上是运动中的收缩电场。根据这一新原理,可以推导和证明所有电磁定律。实验证实,静态磁场周围确实存在静电场,这是对磁场是运动中的收缩电场这一新原理的有力科学证明。论文认为,地球上层含负离子空气的西移是地磁产生的根本原因。由于磁场是运动中的收缩电场,作者判断,人们在不同的运动状态下,会在地球上看到不同的运动电场,即看到不同的地磁场。他还进一步确定,地球外相对太阳静止的观察者将看到一个以北极为南极的强地磁场。
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引用次数: 0
Design and Treatment Case Analysis of Continuous T-beam External Prestressed Composite Reinforcement Based on Finite Element Model Calculation 基于有限元模型计算的连续 T 型梁外预应力复合加固设计与处理实例分析
Pub Date : 2024-04-03 DOI: 10.22158/asir.v8n2p11
Ying Xu
The second section of a highway bridge is a 3×30m prestressed concrete continuous T-beam, of which the 5th span 4# T-beam was found to have multiple structural cracks, such as U-shaped cracks and vertical cracks, during regular inspections after one year of operation. Analysis has shown that this was attributed to the fact that the insufficient prestressing during construction caused inadequate prestressing in the beam body. In this sudy, Midas/Civil software is utilized to establish a spatial finite element model to estimate the loss of prestress in damaged T-beams, yielding results consistent with the inspected conditions. On this basis, an external prestressing reinforcement design plan is proposed. The innovative plan considers the impact of reinforcement on the hogging moment of continuous T-beams and optimizes the layout of prestressed steel strands. The layout and fixing methods of steel turning blocks and anchoring blocks are also optimized in accordance with the stress characteristics of continuous T-beams, with the bearing capacity and safety reserve improved. After checking and analyzing the crack width of the reinforced T-beam, it was found that the plan fully meets the requirements for prestressed concrete Class A components. According to plan, the damaged T-beam was repaired and reinforced, and continuous observation of the reinforced T-beam was conducted for two years. No new development of bridge defects was observed in the later stages, indicating a satisfactory reinforcement effect. This provides technical reference for similar projects.
某公路桥的第二段为 3×30 米预应力混凝土连续 T 梁,其中第 5 跨 4#T梁在运行一年后的定期检查中发现多处结构裂缝,如 U 形裂缝和竖向裂缝。分析表明,这是由于施工时预应力不足导致梁体预应力不足造成的。在这项研究中,利用 Midas/Civil 软件建立了一个空间有限元模型,以估算受损 T 型梁的预应力损失,得出的结果与检查情况一致。在此基础上,提出了外部预应力加固设计方案。该创新方案考虑了加固对连续 T 型梁阻滞力矩的影响,并优化了预应力钢绞线的布置。同时,还根据连续 T 型梁的受力特点,优化了钢筋转动块和锚固块的布置和固定方法,提高了承载能力和安全储备。在对钢筋 T 梁的裂缝宽度进行检查和分析后发现,该方案完全符合预应力混凝土 A 级构件的要求。按照计划,对损坏的 T 梁进行了修复和加固,并对加固后的 T 梁进行了为期两年的连续观测。后期未发现新的桥梁缺陷,表明加固效果令人满意。这为类似工程提供了技术参考。
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引用次数: 0
Study on the Tax Burden Sharing between Supply and Demand--Based on a Perspective of Microeconomics 基于微观经济学视角的供需双方税收负担分担研究
Pub Date : 2024-03-22 DOI: 10.22158/asir.v8n2p1
Jingwu Yao, Jingyi Zhao
Although a country's tax on market goods increases fiscal revenue to a certain extent, the tax burden is borne by both the supply and demand, which damages the interests of both consumers and suppliers. In the long run, government taxes on goods hurt both producers and consumers and hurt economic growth. This paper analyzes the nature of national taxation, the impact of tax burden on both supply and demand, and the relationship between tax burden allocation and elasticity of supply and demand. At the same time, this paper analyzes that the difference between the supply and demand elasticity is the main reason for the difference between producers and consumers. Finally, this paper puts forward some suggestions and countermeasures to promote economic growth and reduce the tax burden of producers and consumers.
虽然一国对市场商品征税在一定程度上增加了财政收入,但税负由供需双方共同承担,损害了消费者和供应商双方的利益。从长远来看,政府对商品征税既损害了生产者的利益,也损害了消费者的利益,不利于经济增长。本文分析了国家税收的性质、税负对供需双方的影响以及税负分配与供需弹性之间的关系。同时,本文分析了供需弹性的差异是造成生产者和消费者之间差异的主要原因。最后,本文提出了一些促进经济增长、减轻生产者和消费者税负的建议和对策。
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引用次数: 0
Exploration of the Application of Green Mining Technology in Coal Mines under the New Situation 新形势下煤矿绿色开采技术应用探讨
Pub Date : 2024-03-02 DOI: 10.22158/asir.v8n1p159
Chuanbin Ma
This paper discusses the application of green mining technology in coal mines under the new situation, considering the environmental pressures and requirements for sustainable development faced by coal mining. Firstly, it introduces the definition and principles of green mining, along with its development history, and analyzes the importance of relevant policies and regulations. Subsequently, it analyzes the demands faced by coal mining under the new situation, including the relationship between environmental issues and sustainable development, the impact of new energy development on coal mines, and social demands and public opinion pressure. Furthermore, through application cases, it showcases the specific practices of green mining technology in coal mines, involving environmental protection technology, energy efficiency improvement technology, and green mining technology. When discussing the challenges and issues of technology application, it focuses on technical difficulties, economic feasibility, and human resources and training needs. Finally, it looks ahead to the prospects of green mining technology in coal mines, emphasizing the importance of sustainable development and proposing suggestions regarding technological innovation, policy support, and corporate responsibilities.
本文结合煤矿开采面临的环境压力和可持续发展要求,探讨了新形势下绿色开采技术在煤矿中的应用。首先,介绍了绿色开采的定义、原则及其发展历程,分析了相关政策法规的重要性。随后,分析了新形势下煤矿开采面临的需求,包括环境问题与可持续发展的关系、新能源发展对煤矿的影响、社会需求与舆论压力等。此外,还通过应用案例,展示了绿色开采技术在煤矿中的具体实践,涉及环境保护技术、能效提升技术和绿色开采技术。在讨论技术应用的挑战和问题时,重点关注技术难度、经济可行性、人力资源和培训需求。最后,展望了煤矿绿色开采技术的前景,强调了可持续发展的重要性,并就技术创新、政策支持和企业责任提出了建议。
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引用次数: 0
Inter-well Connectivity Mapping System Based on Production Dynamic Data 基于生产动态数据的井间连通性绘图系统
Pub Date : 2024-03-02 DOI: 10.22158/asir.v8n1p153
Yiru Gao, Jingyi Ma, Shuyi Qian, Siyu Tian, Yibei Wu
In the process of oilfield development, interwell connectivity is an important index for reservoir evaluation, but after most of the oilfields enter into the medium-high water content development stage, the evaluation of interwell connectivity becomes the key to improve the efficiency of injection and recovery development. In order to solve the problems of time-consuming and costly of the traditional dynamic connectivity research methods, a water-driven injection and recovery inter-well connectivity calculation model was established through the study of Liu76-60 well group. In the process of the study, the inter-well model was established by processing the data of the well group, and the inter-well connectivity between injection and extraction wells was calculated on the basis of this model, and the calculated results were verified by multivariate linear regression equations. The final results show that the model established in the study is more accurate in evaluating the inter-well connectivity, and the comparison can be confirmed to be consistent with the results of the production dynamics, so the model can be used to evaluate the inter-well connectivity, which has a positive effect on the effective improvement of the efficiency of injection and recovery development in the reservoir.
在油田开发过程中,井间连通性是油藏评价的重要指标,而在大部分油田进入中高含水开发阶段后,井间连通性评价成为提高注采开发效率的关键。为了解决传统动态连通性研究方法耗时长、成本高的问题,通过对刘76-60井组的研究,建立了水驱注采井间连通性计算模型。在研究过程中,通过对井组数据的处理建立了井间模型,在此基础上计算了注采井间连通性,并通过多元线性回归方程对计算结果进行了验证。最终结果表明,该研究建立的模型对井间连通性的评价较为准确,通过对比可以确认与生产动态的结果一致,因此可以利用该模型对井间连通性进行评价,对有效提高油藏注采开发效率具有积极作用。
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引用次数: 0
Challenges in the Application of BIM Technology in Road and Bridge Engineering and Its Influence on the Continued Intention to Use 道路桥梁工程中应用 BIM 技术的挑战及其对持续使用意向的影响
Pub Date : 2024-01-11 DOI: 10.22158/asir.v8n1p22
Hao Li
This paper aims to explore the primary challenges of applying Building Information Modeling (BIM) technology in road and bridge engineering and to analyze how these challenges affect the willingness of engineers and project managers to continuously use BIM technology. The article first outlines the current state of BIM technology application in road and bridge engineering, then delves into the technical, managerial, and cost challenges of implementing BIM in such projects. Following this, the paper analyzes how these challenges influence users' acceptance and intention to use BIM technology, especially in the context of project complexity, team collaboration, and budget constraints. Finally, the paper proposes a series of strategic recommendations aimed at enhancing the continued application of BIM in road and bridge engineering through improved training, process optimization, and strengthened team collaboration. Through in-depth analysis, this study not only offers a new perspective on the application of BIM technology in road and bridge engineering but also provides practical guidance for improving the willingness of professionals in the field to use BIM technology.
本文旨在探讨在道路和桥梁工程中应用建筑信息模型(BIM)技术的主要挑战,并分析这些挑战如何影响工程师和项目经理持续使用 BIM 技术的意愿。文章首先概述了 BIM 技术在道路和桥梁工程中的应用现状,然后深入探讨了在此类项目中实施 BIM 所面临的技术、管理和成本挑战。随后,文章分析了这些挑战如何影响用户对 BIM 技术的接受程度和使用意向,尤其是在项目复杂性、团队协作和预算限制的背景下。最后,本文提出了一系列战略建议,旨在通过加强培训、优化流程和强化团队协作,提高 BIM 在道路与桥梁工程中的持续应用。通过深入分析,本研究不仅为 BIM 技术在道路桥梁工程中的应用提供了新的视角,还为提高该领域专业人员使用 BIM 技术的意愿提供了实用指导。
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引用次数: 0
Effect of Yuanbao Maple Tea Powder with High Chlorogenic Acid Content on Bread Quality 高绿原酸含量的元宝枫茶粉对面包质量的影响
Pub Date : 2024-01-04 DOI: 10.22158/asir.v8n1p8
Chong Wang, Yujiao Zhao
Using Yuanbao maple leaves as raw materials, the extraction process of chlorogenic acid in leaves was optimized, and single-factor and orthogonal experiments were carried out on ultrasonic temperature, time, and solid-liquid ratio through ultrasonic extraction. The results showed that the optimal level of the experiment was when the ratio of solid to liquid was 16:1, the concentration of ethanol was 60%, and the ultrasonic time was 15 min, and the extraction amount was 6.86% (mass fraction). Under the optimal extraction process conditions, the dynamic content of chlorogenic acid in the growth cycle of Yuanbaofeng in 2020 was analyzed. The results showed that the content of chlorogenic acid in the leaves of Yuanbaofeng in June was the highest, and the content in September was the least. In order to further explore the effect of Yuanbao maple tea powder on bread quality, different proportions of Yuanbao maple tea powder were added to bread to study its sensory effects on bread. The effects of scores, moisture content, texture, polyphenol content, antioxidant activity and other qualities. The results show that the water holding capacity, elasticity and anti-oxidation of bread are the best when the addition amount of GTB is 0.5%. Less elastic, more difficult to chew, and gradually unstable antioxidant properties.
以元宝枫叶为原料,对叶片中绿原酸的提取工艺进行了优化,通过超声提取对超声温度、时间、固液比进行了单因素实验和正交实验。结果表明,当固液比为 16:1、乙醇浓度为 60%、超声时间为 15 分钟时,实验达到最佳水平,提取量为 6.86%(质量分数)。在最佳提取工艺条件下,分析了 2020 年元宝枫生长周期中绿原酸的动态含量。结果表明,6 月份元宝枫叶片中的绿原酸含量最高,9 月份含量最低。为了进一步探讨元宝枫茶粉对面包品质的影响,将不同比例的元宝枫茶粉添加到面包中,研究其对面包的感官影响。分、水分含量、质地、茶多酚含量、抗氧化活性等品质的影响。结果表明,GTB 添加量为 0.5%时,面包的持水性、弹性和抗氧化性最好。弹性较差,不易咀嚼,抗氧化性逐渐不稳定。
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引用次数: 0
Research on Large-scale Energy Storage of Chinese Power System Based on Demand Analysis 基于需求分析的中国电力系统大规模储能研究
Pub Date : 2023-12-26 DOI: 10.22158/asir.v8n1p1
Yongwen Wang, Haiyang Yu, Lihong Jiang
With the construction and development of a low carbon and environmental protection society, China is promoting the construction of a clean, low carbon, safe and efficient energy supply system, the most critical of which is to promote the rapid construction of new energy installed capacity. However, with the continuous expansion of the new energy installed capacity, the random volatility of the power supply has become an important factor that puzzles the power balance of the current power system, not only formed a larger peak pressure, but also became one of the important factors restricting the development of new energy. At the same time, the new energy power electronic equipment has weak supporting characteristics, which also makes the proportion of new energy power system continues to increase, and has a high impact on security. In this context, this paper carries out a demand analysis, firstly discussing the demand for large-scale energy storage in the development of new energy for power system, and secondly analyzing the demand for large-scale energy storage in the safe operation of large power grid, so as to promote the construction of GW-level electrochemical energy storage power station and effectively deal with the power imbalance and safety problems.
随着低碳环保社会的建设和发展,我国正在推进清洁、低碳、安全、高效的能源供应体系建设,其中最关键的是推动新能源装机容量的快速建设。然而,随着新能源装机容量的不断扩大,电力供应的随机波动性成为困惑当前电力系统电力平衡的重要因素,不仅形成了较大的调峰压力,也成为制约新能源发展的重要因素之一。同时,新能源电力电子设备配套性较弱的特点,也使得新能源在电力系统中的比重不断增加,对安全性产生了较高的影响。在此背景下,本文进行了需求分析,首先探讨了电力系统新能源发展对大规模储能的需求,其次分析了大电网安全运行对大规模储能的需求,从而推动GW级电化学储能电站的建设,有效应对电力失衡和安全问题。
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引用次数: 0
Research on the Visual Image Shaping of Tourism Brand in Panyu District, Guangzhou 广州市番禺区旅游品牌视觉形象塑造研究
Pub Date : 2023-11-27 DOI: 10.22158/asir.v7n4p145
Wen Pei
The prominent visual image of regional tourism brands often gives people a strong attraction and profound influence, increases the recognition of regional tourism, and stimulates consumers' consumption desire. For tourism practitioners, the creative application of tourism brands and visual images is conducive to product innovation and promotion. The first part of this paper introduces the research background, purpose and significance of the subject; The second part defines the concept and discusses the basic theory. The third part takes Panyu District as an example, analyzes the development and change of tourism brand image, probes into the factors that affect tourism brand, and studies the visual image building of tourism brand law on this basis. The aim is to provide some reference ideas for regional tourism brand visual image building and brand quality improvement.
区域旅游品牌突出的视觉形象往往给人以强烈的吸引力和深刻的感染力,提高区域旅游的认知度,刺激消费者的消费欲望。对于旅游从业者而言,旅游品牌和视觉形象的创造性应用有利于产品的创新和推广。本文第一部分介绍了课题的研究背景、目的和意义;第二部分对概念进行了界定,并对基本理论进行了论述。第三部分以番禺区为例,分析旅游品牌形象的发展变化,探究影响旅游品牌的因素,并在此基础上研究旅游品牌视觉形象塑造规律。旨在为区域旅游品牌视觉形象塑造和品牌质量提升提供一些参考思路。
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引用次数: 0
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Applied Science and Innovative Research
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