Theoretical and Natural Science最新文献_第6页

Research on computer vision application for safety management in construction 计算机视觉在建筑安全管理中的应用研究

Theoretical and Natural Science Pub Date : 2024-01-15 DOI: 10.54254/2753-8818/30/20241124

Yu Wang

{"title":"Research on computer vision application for safety management in construction","authors":"Yu Wang","doi":"10.54254/2753-8818/30/20241124","DOIUrl":"https://doi.org/10.54254/2753-8818/30/20241124","url":null,"abstract":"In light of the complexity of building sites, safety management has always been a challenging and crucial duty. The goal of construction safety management is to ensure the safe completion of the project, maintain the life and health of workers, and decrease construction accidents and losses. The emergence of computer vision (CV) technology has transformed the old construction safety management methodology. This paper demonstrates how CV technology can increase safety and management efficiency at construction sites from an application standpoint. Firstly, the principles and methods of CV technology are introduced, and the literature analysis methodology used in this paper is also descripted in detail. Then, its application in various aspects such as real-time monitoring of construction sites, worker safety management, equipment behaviour monitoring and material quality control are researched. In addition, this paper demonstrates the significant potential of CV technology in reducing accidents and enhancing safety performance, and provides important insights into future research prospects. Finally, this paper presents a more detailed picture of the construction industrys aim to utilize CV technology to improve safety management, and is both informative and instructional.","PeriodicalId":489336,"journal":{"name":"Theoretical and Natural Science","volume":" 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139621832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the development of artificial satellites 人造卫星开发研究

Theoretical and Natural Science Pub Date : 2024-01-15 DOI: 10.54254/2753-8818/30/20241136

Xie Yifei

{"title":"Research on the development of artificial satellites","authors":"Xie Yifei","doi":"10.54254/2753-8818/30/20241136","DOIUrl":"https://doi.org/10.54254/2753-8818/30/20241136","url":null,"abstract":"This paper aims to systematically explore the development history, current situation, and future trends of artificial satellites, and to comprehensively analyze the important role of artificial satellites in national science and technology, national defense, and economic construction. Firstly, the paper outlines the extensive applications of artificial satellites as an important component of modern aerospace technology in fields such as communication, navigation, meteorology, and earth observation, as well as their significant importance for national security and economic development. Secondly, this paper adopts the research methods of literature review and case analysis to systematically study the latest progress and achievements in artificial satellite technology in various countries around the world and deeply analyzes the key technological breakthroughs and current development status of China in remote sensing, navigation, communication and other fields. Finally, through an in-depth analysis of the development trends and challenges faced by artificial satellite technology, combined with the current development status of Chinas aerospace industry, strategies and suggestions for the future development of artificial satellite technology in China are proposed. This study can provide theoretical support for the research and application of artificial satellite technology in China, and help promote the sustained and healthy development of Chinas aerospace industry.","PeriodicalId":489336,"journal":{"name":"Theoretical and Natural Science","volume":" 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139621947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of dynamic models in forecasting the total population of the United States 动态模型在预测美国总人口中的应用

Theoretical and Natural Science Pub Date : 2024-01-15 DOI: 10.54254/2753-8818/30/20241028

Hongyi Li

引用次数: 0

Numerical simulation of MHD on sudden expansion duct under strong transverse magnetic field 强横向磁场下骤然膨胀管道上的 MHD 数值模拟

Theoretical and Natural Science Pub Date : 2024-01-15 DOI: 10.54254/2753-8818/30/20241128

Yipeng Liu

{"title":"Numerical simulation of MHD on sudden expansion duct under strong transverse magnetic field","authors":"Yipeng Liu","doi":"10.54254/2753-8818/30/20241128","DOIUrl":"https://doi.org/10.54254/2753-8818/30/20241128","url":null,"abstract":"This research delves into the analysis of quasi-two-dimensional flow dynamics in liquid metal confined within a sudden expansion duct, subjected to a strong magnetic field. Utilizing numerical simulations derived from the SM82 model, the study concentrates on examining the magnetohydrodynamic (MHD) responses across a defined range of parameters. These simulations were conducted maintaining a constant Reynolds number (Re), while systematically varying the Hartmann number (Ha) across a spectrum of values [1000, 2000, 5000, 10000, 15000, 20000] to enable a thorough exploration of the magnetic fields influence on the flow dynamics. The outcomes of this study reveal a marked transition in flow behavior corresponding with the escalation in magnetic field strength. Notably, as the magnetic field intensifies, the flow undergoes a transformation from a state of instability to stability. This shift is predominantly characterized by a diminution, followed by a complete cessation, of shear vortex shedding. Additionally, beyond a Ha of 5000 and at a longitudinal position of x = 6, both the velocity and pressure profiles begin to exhibit near-identical and symmetric characteristics. Post the Ha exceeding 1000, the vortex profile demonstrates symmetry about the y=0 axis. These observations significantly enhance the comprehension of MHD fluid dynamics under quasi-two-dimensional conditions.","PeriodicalId":489336,"journal":{"name":"Theoretical and Natural Science","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139622195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Beyond the finite: An exploration of infinite-dimensional vector spaces 超越有限：无穷维向量空间探索

Theoretical and Natural Science Pub Date : 2024-01-15 DOI: 10.54254/2753-8818/30/20241017

Jenny Zhu

{"title":"Beyond the finite: An exploration of infinite-dimensional vector spaces","authors":"Jenny Zhu","doi":"10.54254/2753-8818/30/20241017","DOIUrl":"https://doi.org/10.54254/2753-8818/30/20241017","url":null,"abstract":"In this paper, we delve deeply into the intricacies of linear algebra, with a focus on the progression from finite to infinite-dimensional vector spaces. Starting with the foundational concepts, we define vectors, vector spaces, linear combinations, and basis. The importance of infinite-dimensional vector spaces is emphasized, particularly their role in better understanding and modeling complex mathematical phenomena. Through well-illustrated examples, we guide the reader on how to validate if a given set can be classified as a vector space. Additionally, the methodology to identify bases for these vast spaces is discussed in detail. Reduction methods also play an important role in determining bases for infinite-dimensional spaces. In our conclusion, we reflect on the evolution from basic vector concepts to the more nuanced understanding of infinite dimensions. This progression not only deepens our understanding of vectors but also sets the stage for advanced investigations into linear relationships and transformations. By bridging the gap between elementary vector knowledge and advanced infinite-dimensional spaces, this paper makes a notable contribution to the ever-evolving field of linear algebra, serving as a valuable resource for both students and practitioners.","PeriodicalId":489336,"journal":{"name":"Theoretical and Natural Science","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139623035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the application of mathematical modeling in tumor immunology in the context of chemotherapy 研究化疗背景下数学建模在肿瘤免疫学中的应用

Theoretical and Natural Science Pub Date : 2024-01-15 DOI: 10.54254/2753-8818/30/20241043

Jiaming Zhou

{"title":"Research on the application of mathematical modeling in tumor immunology in the context of chemotherapy","authors":"Jiaming Zhou","doi":"10.54254/2753-8818/30/20241043","DOIUrl":"https://doi.org/10.54254/2753-8818/30/20241043","url":null,"abstract":"Cancer is not only a highly detrimental disease but also a particularly grave health concern. Moreover, the current incidence and mortality rates in our country are far from encouraging, making the prevention and control situation very challenging. Therefore, identifying the most scientific and effective treatment methods has become one of our primary research focuses. This paper, building upon previous models and incorporating resistance factors, categorizes tumor cells into those that are sensitive to chemotherapy drugs and those that become resistant. Using MATLAB, we have adjusted various sensitivity parameters in the model to simulate the number of tumor cells over 40 days. This simulation aims to analyze the sensitivity levels of tumor cells to different parameters upon the inclusion of resistance factors. The initial data used for the simulation were derived from the original paper. Ultimately, our findings indicate that tumor cells are most sensitive to the chemotherapy drugs killing rate for normal tumor cells and the decay rate of the chemotherapy drug. Due to the drug resistance factor, the sensitivity of different parameters is influenced. For parameters related to chemotherapy drugs, the final results, when incorporating this factor, may deviate significantly from those of previous models without this factor. For instance, the decay rate of chemotherapy drugs might result in a larger total number of tumor cells or a steeper trend compared to previous findings.","PeriodicalId":489336,"journal":{"name":"Theoretical and Natural Science","volume":" 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139620787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New usage of telemetry for anti-cheating in FPS game 在 FPS 游戏中使用遥测技术反作弊的新方法

Theoretical and Natural Science Pub Date : 2024-01-15 DOI: 10.54254/2753-8818/30/20241075

Zilu Wang

{"title":"New usage of telemetry for anti-cheating in FPS game","authors":"Zilu Wang","doi":"10.54254/2753-8818/30/20241075","DOIUrl":"https://doi.org/10.54254/2753-8818/30/20241075","url":null,"abstract":"First-person shooter games are experiencing a surge in popularity. As more players join, advanced AI-based cheats have emerged. These cheats simulate human gameplay, sending mouse inputs, making them hard to detect and counter. Therefore, this research presents a novel approach that utilizes telemetry data analysis to identify and counteract cheating in FPS games. The main objective of this study is to develop an innovative anti-cheating system that can effectively detect and prevent players from exploiting AI-based cheats to gain unfair advantages. To achieve this, extensive telemetry data is collected during gameplay. The data contains the real-time cursor position when the player is playing the game. Besides, Machine learning and deep algorithms are applied to analyse the telemetry data and distinguish between human player behaviour and AI-driven cheating patterns. Decision Tree, Random Forest, LSTM, and CNN are applied for this research. And in the final evaluation, CNNs accuracy reached around 80% which proves it is a possible mode to be used for this problem. The significance of this research lies in its contribution against cheating in FPS games, particularly those exploiting AI technologies to gain unfair advantage. The proposed telemetry-based approach offers a solution to safeguard competitive gaming and insight into the game company based on this novel way for further experiments.","PeriodicalId":489336,"journal":{"name":"Theoretical and Natural Science","volume":" 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139623540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dirac equation and its contribution to atomic fine structure 狄拉克方程及其对原子精细结构的贡献

Theoretical and Natural Science Pub Date : 2024-01-15 DOI: 10.54254/2753-8818/30/20241085

Diyang Bai

{"title":"Dirac equation and its contribution to atomic fine structure","authors":"Diyang Bai","doi":"10.54254/2753-8818/30/20241085","DOIUrl":"https://doi.org/10.54254/2753-8818/30/20241085","url":null,"abstract":"This article aims to establish the comprehensiveness of the Dirac equation as an effective modification of quantum mechanics for the analysis of electrons and atomic fine structure. The Dirac equation is applied to investigate two scenarios involving electron interactions with different potentials. In the case where =0, the Dirac equation aligns naturally with electron theories and yields an electron gyromagnetic factor of g_s=2. With additional radiative corrections, it is possible to bring this value into closer proximity to experimental results. On the other hand, when considering spin-orbit coupling within a central field of V=(-e^2)r, the spin-orbit Hamiltonian derived from the Dirac equation is shown to match calculations based on Larmor and Thomas interactions. These cases collectively demonstrate the superior utility of Diracs theory when dealing with spin-1/2 particles like electrons, underscoring Diracs historical success in addressing the complexities of the time. His achievements in elucidating atomic fine structure and spin-orbit coupling hold pivotal significance for advancing technologies rooted in these theories. However, it is important to note that the Dirac equation primarily remains valid in weak external field situations, as observed in electron orbital motion, while challenges persist in unifying it with general relativity in stronger external field contexts.","PeriodicalId":489336,"journal":{"name":"Theoretical and Natural Science","volume":" 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139620752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the cosmic nexus: Black holes, gravitational waves, and the dance of the universe 探索宇宙联系：黑洞、引力波和宇宙之舞

Theoretical and Natural Science Pub Date : 2024-01-15 DOI: 10.54254/2753-8818/30/20240792

Runtong Chen

引用次数: 0

Examining the hazards of sedentary behavior: An overview of the risks of screen-based sedentary behavior 研究久坐不动的危害：基于屏幕的久坐行为的危害概述

Theoretical and Natural Science Pub Date : 2024-01-08 DOI: 10.54254/2753-8818/29/20240801

ChuanQi You, YuPeng Cui

{"title":"Examining the hazards of sedentary behavior: An overview of the risks of screen-based sedentary behavior","authors":"ChuanQi You, YuPeng Cui","doi":"10.54254/2753-8818/29/20240801","DOIUrl":"https://doi.org/10.54254/2753-8818/29/20240801","url":null,"abstract":"Screen-based sedentary behaviors (SSB) has become a particularly concerning subset of sedentary behavior. With the rapid advancement of technology, screens have become an integral part of our daily lives. However, the potential health impacts that accompany this trend demand our attention. Increasing evidence suggests that screen-based sedentary behavior, as opposed to traditional sedentary activities like reading, has more severe implications for health. Prolonged SSB in children and adolescents is associated with poorer physical fitness and cardiovascular health, and it poses a higher risk of obesity compared to traditional sedentary behavior. The World Health Organizations sedentary behavior guidelines emphasize the importance of limiting SSB in children and adolescents (aged 5-17) and encouraging adults (aged 18-64) to reduce their screen-based sedentary time. Therefore, this review provides an overview of the health hazards (obesity, type 2 diabetes, mental health and sleep) associated with screen-based sedentary behaviour and its potential mechanisms of action. In addition, interventions to reduce SSB and their benefits are discussed and future research directions are suggested.","PeriodicalId":489336,"journal":{"name":"Theoretical and Natural Science","volume":"48 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0