Advances in Computer and Engineering Technology Research最新文献_第8页

Numerical Simulation Analysis of Hydrogen Leakage and Diffusion in Tunnel 隧道内氢气泄漏和扩散的数值模拟分析

Advances in Computer and Engineering Technology Research Pub Date : 2024-04-18 DOI: 10.61935/acetr.2.1.2024.p571

Yicheng Zhang, Gang Tao

引用次数: 0

Effect of the Backboard on the Pyrolysis Front Morphology of Downward Flame Spread: A Simulation Study 背板对火焰向下蔓延的热解前沿形态的影响：模拟研究

Advances in Computer and Engineering Technology Research Pub Date : 2024-04-18 DOI: 10.61935/acetr.2.1.2024.p468

Penghui Sun, Kuibin Zhou, Dayu Li

{"title":"Effect of the Backboard on the Pyrolysis Front Morphology of Downward Flame Spread: A Simulation Study","authors":"Penghui Sun, Kuibin Zhou, Dayu Li","doi":"10.61935/acetr.2.1.2024.p468","DOIUrl":"https://doi.org/10.61935/acetr.2.1.2024.p468","url":null,"abstract":"In order to investigate the influence of the backboard on the morphology of the pyrolysis front, this study employed the fire dynamics simulator (FDS) to conduct simulation research, aiming to quantitatively analyze the reasons for the differences in the morphology of the pyrolysis front under two conditions: with and without the backboard. By comparing the surface temperature distribution, flow field, and air entrainment velocity at the bottom of the pyrolysis front made of polymethyl methacrylate (PMMA) under different conditions, it was found that the presence of the backboard not only reduced the surface temperature of PMMA at the bottom of the pyrolysis front and the temperature difference between the edge and middle, but also changed the flow field at the edge and suppressed the horizontal air entrainment velocity at that position, especially for thinner PMMA. These factors ultimately result in a larger angle of the pyrolysis front during the burning stable stage under the condition with the backboard compared to the condition without the backboard. In addition, the trend of horizontal air entrainment velocity at the edge position under different conditions also provide data support for the qualitative observation and analysis of previous experiments phenomena.","PeriodicalId":503577,"journal":{"name":"Advances in Computer and Engineering Technology Research","volume":" 48","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140687406","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

Study on phase transition heat transfer of nanofluids in porous media based on LBM 基于 LBM 的多孔介质中纳米流体相变传热研究

Advances in Computer and Engineering Technology Research Pub Date : 2024-04-18 DOI: 10.61935/acetr.2.1.2024.p280

Tongtong Li, Yunfei Ji, Ke Li

{"title":"Study on phase transition heat transfer of nanofluids in porous media based on LBM","authors":"Tongtong Li, Yunfei Ji, Ke Li","doi":"10.61935/acetr.2.1.2024.p280","DOIUrl":"https://doi.org/10.61935/acetr.2.1.2024.p280","url":null,"abstract":"In this paper, a lattice Boltzmann method is used to simulate the phase transition heat transfer of nanofluid in a miniature heat tube in a porous medium. Based on this, the existing research basis is summarized, the influence of nanoparticles on the thermal properties of the base solution is analyzed, the relevant thermal property prediction model is constructed, and the thermal property parameters of nanofluid are fitted. We generated porous media with different porosity with particle size of 100 micron to 150 microns. Combining the force form proposed by Gong with the exact difference method, the interparticle force is introduced. Based on the improved LBM model and the coupled energy equation, so as to analyze the phase transition heat transfer situation of nanofluids with different thermal properties in porous media.The study shows that nanofluidics can effectively enhance the heat transfer performance of heat pipe equipment.In a certain concentration limit, with the increase of volume concentration, the heat transfer performance of heat pipe is enhanced. The greater the temperature difference between the cold and heat source, that is, the higher the temperature of the heat source, the lower the cold source temperature, the better the heat transfer performance of the heat pipe. For the fluid flow in the porous media region, that is, the turbulent phenomenon that may occur in the porous media, and more vortices occur in the porous media with 40% and 50% porosity. Higher porosity has better heat pipe temperature uniformity. ","PeriodicalId":503577,"journal":{"name":"Advances in Computer and Engineering Technology Research","volume":" 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140689684","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

A study of the relevance of seismic steel structures to urban carbon neutrality 抗震钢结构与城市碳中和的相关性研究

Advances in Computer and Engineering Technology Research Pub Date : 2024-04-18 DOI: 10.61935/acetr.2.1.2024.p187

Kim Jungeun

{"title":"A study of the relevance of seismic steel structures to urban carbon neutrality","authors":"Kim Jungeun","doi":"10.61935/acetr.2.1.2024.p187","DOIUrl":"https://doi.org/10.61935/acetr.2.1.2024.p187","url":null,"abstract":"Global warming has triggered dramatic climate change and natural disasters. Since the 21st century, the frequency of all kinds of extreme weather has increased significantly. This study, in accordance with the carbon peak targets and stage requirements, improve the building low carbon building standards system, accelerate the formulation, revision and collation of energy-saving design standards for public buildings energy-saving and carbon reduction standards. The application of earthquake-resistant steel structure of the building, the promotion of green low carbon building materials and green construction methods. Actively promote such buildings, the past sixty years each country's carbon emissions intensity have shown a general downward trend, especially South Korea, South Africa and Brazil and other countries due to economic development began to focus attention on environmental issues. In this study, we take Busan, Korea as an example, and use carbon neutral calculations to realize carbon neutrality by designing superstructures with a reduced degree of intensity, so that the reduction of carbon emissions mainly includes emission reductions brought about by a reduction in the amount of steel and cement used. It is hoped that this study will be taken into account, and that the early realization of peak carbon emissions in South Korea will be the current situation to be realized, and will be a challenge not only for developing countries, but also an important issue to be considered by all countries.","PeriodicalId":503577,"journal":{"name":"Advances in Computer and Engineering Technology Research","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140687044","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

Smartphone Potential Energy in the Digital Era and the Construction of Learning Organizations in Universities 数字时代的智能手机势能与高校学习型组织建设

Advances in Computer and Engineering Technology Research Pub Date : 2024-04-18 DOI: 10.61935/acetr.2.1.2024.p86

Haige Shi

{"title":"Smartphone Potential Energy in the Digital Era and the Construction of Learning Organizations in Universities","authors":"Haige Shi","doi":"10.61935/acetr.2.1.2024.p86","DOIUrl":"https://doi.org/10.61935/acetr.2.1.2024.p86","url":null,"abstract":"As human society enters the digital era in the 21st century, the widespread application of smartphones is reshaping the educational ecosystem. Smartphones not only possess communication, entertainment, and payment functions but also educational and relationship adjustment capabilities. These positive, promotive functions endowed by smartphones are referred to as smartphone potential energy. A survey conducted among students in three English teaching classes at a Beijing university revealed that smartphone potential energy typically plays four roles: resource sharer, direction guide, relationship facilitator, and learning motivator, thereby promoting the construction of university learning organization relationships. Under the influence of smartphone potential energy, organizational relationships shift from a focus on subjective interpersonal relationships to objective neutrality, and organizational structures evolve from linear hierarchical to flat structures, achieving a transition from management to governance, which provides insights for university grassroots student organization managers to scientifically implement organizational management and optimize relationships in the digital era.","PeriodicalId":503577,"journal":{"name":"Advances in Computer and Engineering Technology Research","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140688649","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

Causal relationship recognition algorithm based on external semantic and contextual structural features 基于外部语义和上下文结构特征的因果关系识别算法

Advances in Computer and Engineering Technology Research Pub Date : 2024-02-27 DOI: 10.61935/acetr.2.1.2024.p1

Jiaxin Li, Kai Shuang

{"title":"Causal relationship recognition algorithm based on external semantic and contextual structural features","authors":"Jiaxin Li, Kai Shuang","doi":"10.61935/acetr.2.1.2024.p1","DOIUrl":"https://doi.org/10.61935/acetr.2.1.2024.p1","url":null,"abstract":"Identifying the causal relationship of events plays an important role in determining the development of known events and evaluating the possible outcomes of different decisions. At present, neural network models are widely used to identify the relationships between events. Based on obtaining events, researchers distinguish the relationships between events by mining their semantics. However, due to the complexity of events and the dynamic changes in relationships between events, models often cannot fully meet the needs of accurately identifying causal relationships by only learning simple event descriptions in sentences; Moreover, focusing too much on the events themselves often leads to neglecting the structural features of statements and neglecting the impact of specific structural patterns on the relationships between events. In this article, we propose an event masking algorithm that combines external semantics to address the aforementioned issues. In this algorithm, external semantics are first introduced into the statement to enrich the information behind the event, allowing the model to mine the deep connections between events through a wider range of background knowledge; Then, the event masking module is used to enhance the model's extraction of sentence structured features, mining specific contextual representations that are unrelated to the event. The results show that compared to existing neural network algorithms, the algorithm proposed in this paper improves the F1 value of predictions on publicly available datasets by more than 4%.","PeriodicalId":503577,"journal":{"name":"Advances in Computer and Engineering Technology Research","volume":"4 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140424791","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

Microbiology and Lung Cancer: A Comprehensive Review 微生物学与肺癌：全面回顾

Advances in Computer and Engineering Technology Research Pub Date : 2023-12-08 DOI: 10.61935/acetr.1.1.2023.p216

Xinran Guo, Yue Liu

{"title":"Microbiology and Lung Cancer: A Comprehensive Review","authors":"Xinran Guo, Yue Liu","doi":"10.61935/acetr.1.1.2023.p216","DOIUrl":"https://doi.org/10.61935/acetr.1.1.2023.p216","url":null,"abstract":"There are hundreds of billions of bacterial flora distributed in the human skin, oral cavity, nasal cavity, stomach, small intestine, large intestine, urinary tract and vagina. There are currently more than 1,000 known human microbiota species. The microbiome lives symbiotically with our bodies and is a diverse community that includes bacteria, fungi, and viruses. It plays an important role in maintaining the body's internal balance, adjusting the immune system,and influencing genetic factors. Lung cancer ranks first among new malignant tumors and is also the leading cause of death from malignant tumors. Like most cancers, lung cancer is caused by multiple factors and has a complex pathogenesis, which may include susceptible hosts, environmental factors, chronic disease burden, habits such as smoking and drinking,and other unidentified causes. In recent years, with the development of detection technology and the in-depth understanding of the tumor microenvironment, more and more evidence has confirmed the existence of bacteria within tumors, which has also triggered further in-depth research in this field.Preliminary epidemiological studies have suggested a link between microbes and cancer. This review introduces the sources of microorganisms and their locations, outlines the relationship between lung, oral, and intestinal microbiota and lung cancer and biomolecular mechanisms, and summarizes methods to treat and prevent lung cancer by utilizing these characteristicmechanisms.","PeriodicalId":503577,"journal":{"name":"Advances in Computer and Engineering Technology Research","volume":"50 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139185133","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

Study on longitudinal dynamics of 5000t heavy haul train on mountain railway 山区铁路 5000 吨重载列车纵向动力学研究

Advances in Computer and Engineering Technology Research Pub Date : 2023-12-08 DOI: 10.61935/acetr.1.1.2023.p197

Chunjun Chen, Junping Guan

引用次数: 0

Application of Palladium Single Atoms in C−C Coupling Reactions of Pharmaceutical Synthesis 钯单原子在药物合成的 C-C 偶联反应中的应用

Advances in Computer and Engineering Technology Research Pub Date : 2023-12-08 DOI: 10.61935/acetr.1.1.2023.p192

Yujun Zhang, Hui Teng, Junpeng Chen, Rui Xia, Yujun Zhou, Kunlin Xie, Zhiyong Chen

引用次数: 0

The Pulsation Characteristics of Multiple Bubbles Under Ship Structural Boundary Conditions 船舶结构边界条件下多个气泡的脉动特性

Advances in Computer and Engineering Technology Research Pub Date : 2023-12-08 DOI: 10.61935/acetr.1.1.2023.p204

Chao Su, Fulin Yu, Wenqi Guo, Zhanquan Li, Yu Ruan, Qinghai Li

{"title":"The Pulsation Characteristics of Multiple Bubbles Under Ship Structural Boundary Conditions","authors":"Chao Su, Fulin Yu, Wenqi Guo, Zhanquan Li, Yu Ruan, Qinghai Li","doi":"10.61935/acetr.1.1.2023.p204","DOIUrl":"https://doi.org/10.61935/acetr.1.1.2023.p204","url":null,"abstract":"To study the pulsation characteristics of multiple bubbles located near the wall structure, underwater low-pressure discharge bubble generation technology was used to study the coupling characteristics of multiple bubbles under horizontal and V-shaped wall conditions. Due to the Bjerknes force on the wall of the bubble, the motion state of the bubble will be affected. Exploring the pulsation characteristics of multiple bubbles under different working conditions and arrangements. The results indicate that the coupling characteristics between bubbles become completely different under boundary conditions. Analyzing the experimental results, it was found that the pulsation period of the bubbles was shortened, resulting in jet, shock wave, and jet loads on the structure, leading to wall damage and necking after fusion. Through different boundary conditions and innovative arrangements of multiple bubbles, the influence of underwater structures on the pulsation characteristics of multiple bubbles in underwater explosions was explored, providing theoretical support for the strength design of ship structures.","PeriodicalId":503577,"journal":{"name":"Advances in Computer and Engineering Technology Research","volume":"59 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139185382","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