Applied Sciences最新文献_第8页

A Novel Computational Paradigm for Reconstructing Solid CAD Features from a Segmented Manifold Triangular Mesh 从分段歧面三角网格重建 CAD 实体特征的新型计算范例

Applied Sciences Pub Date : 2024-07-16 DOI: 10.3390/app14146183

Feiyu Zhao

引用次数: 0

Doped Epoxy Resins as an Alternative to Luminescent Optical Sensors 掺杂环氧树脂作为发光光学传感器的替代品

Applied Sciences Pub Date : 2024-07-16 DOI: 10.3390/app14146170

Małgorzata Gil-Kowalczyk, Paweł Mergo

引用次数: 0

The Effect of Radiation Intensity on the Performance of Direct-Expansion Solar PVT Heat Pump Systems 辐射强度对直接膨胀式太阳能光伏热泵系统性能的影响

Applied Sciences Pub Date : 2024-07-16 DOI: 10.3390/app14146169

Dianguang Zhang, Yiheng Zhou, Zongjun Yu, Tianyan Ma, Xuyang Wang

{"title":"The Effect of Radiation Intensity on the Performance of Direct-Expansion Solar PVT Heat Pump Systems","authors":"Dianguang Zhang, Yiheng Zhou, Zongjun Yu, Tianyan Ma, Xuyang Wang","doi":"10.3390/app14146169","DOIUrl":"https://doi.org/10.3390/app14146169","url":null,"abstract":"The objective of this study was to investigate the impact of solar radiation intensity on the performance of direct-expansion solar PVT heat pump systems. To this end, an experimental setup was constructed for direct-expansion photovoltaic (PVT) solar heat pump water heating systems and photovoltaic (PV) power generation systems. The system performance and main parameters were analyzed and discussed under different solar radiation intensities. The winter experiments in southern China revealed that the exhaust temperature of the heat pump unit varied considerably under clear conditions, while the back temperature remained stable, fluctuating between approximately −13.5 °C and 24 °C. In contrast, the power generation of PVT panels increased with the increase in radiation intensity, from 78.33 W to 122.68 W, for an increase of 56.6%. Furthermore, the total electricity generation of the PVT panels was higher than that of PV panels, with an increase of 8.7–8.3%. Nevertheless, discrepancies between experimental and theoretical data were observed, particularly under overcast conditions, where the back panel temperature error was pronounced. Additionally, the system exhibited enhanced stability at elevated temperatures in comparable environments, accompanied by an improvement in the system’s coefficient of performance (COP) by 5.67%.","PeriodicalId":502388,"journal":{"name":"Applied Sciences","volume":"7 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141640182","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

Concept of Thermal Shrinkage-Resistant Railroad Rail for Use in Continuous Welded Rail Track 用于连续焊接轨道的抗热收缩铁轨概念

Applied Sciences Pub Date : 2024-07-16 DOI: 10.3390/app14146172

Jacek Kukulski, Andrzej Ratkiewicz

引用次数: 0

Carbon Dioxide Emission Characteristics and Operation Condition Optimization for Slow-Speed and High-Speed Ship Engines 慢速和高速船舶发动机的二氧化碳排放特性和运行条件优化

Applied Sciences Pub Date : 2024-07-15 DOI: 10.3390/app14146134

Seunghun Lim, Jinkyu Park, Jongtae Lee, Dongin Lee, Jungmo Oh

{"title":"Carbon Dioxide Emission Characteristics and Operation Condition Optimization for Slow-Speed and High-Speed Ship Engines","authors":"Seunghun Lim, Jinkyu Park, Jongtae Lee, Dongin Lee, Jungmo Oh","doi":"10.3390/app14146134","DOIUrl":"https://doi.org/10.3390/app14146134","url":null,"abstract":"Greenhouse gas emissions from ships are estimated to be approximately 1002 million tons per year; this is the largest carbon dioxide (CO2) emission source among nonroad transportation. Previous studies have generally estimated CO2 emissions using fuel- or power-based emission factors based on fuel consumption or engine power. In this study, CO2 emissions from vessels were measured using a portable emission measurement system. Emission characteristics were analyzed according to the vessel’s operation conditions and compared with the results of other studies. Generally, the higher the rpm value, the more CO2 is emitted, and the emissions at the maximum rpm differ depending on the type and size of the engine. In order to minimize the emissions by ships, those from high seas should be reduced rather than nearby ports. In addition, a method of establishing optimal operating conditions in consideration of economic and environmental perspectives was proposed. Fuel-based emission factors elicited in this study were constant regardless of engine rpm. The fuel-based emission factors of each engine were found to be similar at 3144.22 and 3150.58 kg-CO2/tonne-fuel. Therefore, distinguishing CO2 emission factors according to engine type is not necessary, and additional research is required to understand the emission factors of each fuel type.","PeriodicalId":502388,"journal":{"name":"Applied Sciences","volume":"43 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141644838","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

Sedimentary Characteristics and Evolution of the Late Miocene to Quaternary Tributary Channels in the Head of Bounty Channel, New Zealand 新西兰邦蒂海峡源头晚中新世至第四纪支流河道的沉积特征与演变

Applied Sciences Pub Date : 2024-07-15 DOI: 10.3390/app14146160

Xinlan Deng, Ke Huang, Xiang Li

{"title":"Sedimentary Characteristics and Evolution of the Late Miocene to Quaternary Tributary Channels in the Head of Bounty Channel, New Zealand","authors":"Xinlan Deng, Ke Huang, Xiang Li","doi":"10.3390/app14146160","DOIUrl":"https://doi.org/10.3390/app14146160","url":null,"abstract":"The Bounty Channel is a large-scale submarine channel system located in the eastern continental margin of New Zealand. Extending along the axis of the Bounty Trough, the channel system comprises three main tributaries (C1–C3) at its head, which merge downstream into a trunk channel leading to a terminal submarine fan. In this study, we use high-quality two-dimensional multichannel seismic data to investigate the formation and evolution of tributary channels C1 and C2. Four types of seismic facies are identified in the tributary channels: fill-type, mounded divergent, wavy, and subparallel facies. These seismic facies are correspondingly interpreted as topographic depression or channel fills, levees, sediment waves, and hemipelagic deposits. The Late Miocene tributary channels were developed above a pre-existing NE–SW-oriented depression. The Pliocene to Quaternary tributary channels are characterized by preferential development of higher levees on their left hand, and the presence of sediment waves on the lower levees of their right-hand, signaling an effect of the Coriolis force. The formation and evolution of the tributaries are primarily linked to regional tectonics, including increased convergence rate between the Pacific and Australian plates along the Alpine Fault in the Late Miocene and enhanced uplift and erosion at the Southern Alps during the Pliocene.","PeriodicalId":502388,"journal":{"name":"Applied Sciences","volume":"54 38","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141644637","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

Advances in Solutions to Improve the Energy Performance of Agricultural Greenhouses: A Comprehensive Review 提高农业温室能效解决方案的进展：全面回顾

Applied Sciences Pub Date : 2024-07-15 DOI: 10.3390/app14146158

Rodrigues Pascoal Castro, Pedro Dinho da Silva, Luís Carlos Carvalho Pires

引用次数: 0

Entity-Alignment Interaction Model Based on Chinese RoBERTa 基于中文 RoBERTa 的实体对齐互动模型

Applied Sciences Pub Date : 2024-07-15 DOI: 10.3390/app14146162

Ping Feng, Boning Zhang, Lin Yang, Shiyu Feng

引用次数: 0

Suitable Model for Rehydration of Dried Red Beets: Effect of Solid-to-Liquid Ratio on Rehydration Characteristics 红甜菜干再水化的合适模型：固液比对再水化特性的影响

Applied Sciences Pub Date : 2024-07-15 DOI: 10.3390/app14146132

A. Kaleta, K. Górnicki, Marko Obranović, Krzysztof Kosiorek

{"title":"Suitable Model for Rehydration of Dried Red Beets: Effect of Solid-to-Liquid Ratio on Rehydration Characteristics","authors":"A. Kaleta, K. Górnicki, Marko Obranović, Krzysztof Kosiorek","doi":"10.3390/app14146132","DOIUrl":"https://doi.org/10.3390/app14146132","url":null,"abstract":"Rehydration of food products was carried out in various amounts of liquid. The effects of the solid-to-liquid ratio on rehydration characteristics of dried red beets were investigated. Six values of the solid-to-liquid ratio (1:20, 1:15, 1:10, 1:5, 1:3, and 1:1) were taken into consideration. Red beets cubes (10 mm) were dried in a forced convection (2 m/s; 60 °C) and then rehydrated in distilled water at a temperature of 20 °C. The kinetics of mass gain, dry matter loss, water gain, moisture content increase, and volume increase were modeled using the empirical Peleg model which parameters have physical meanings. Equations were formulated to make the Peleg model parameters dependent on the solid-to-liquid ratio. The obtained results indicated that the amount of rehydrating water influenced the values of the model parameters and the course of dried red beets rehydration and helped explain the rehydration kinetics. The Peleg model can be recommended for describing the kinetics of mass gain (R2 = 0.9662–0.9895), dry matter loss (R2 = 0.7042–0.9881), water gain (R2 = 0.9732–0.9913), moisture content increase (R2 = 0.9770–0.9929), and volume increase (R2 = 0.9374–0.9847) during the rehydration of dried red beet cubes at all considered values of the solid-to-liquid ratio.","PeriodicalId":502388,"journal":{"name":"Applied Sciences","volume":"2 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141648115","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 Student Classroom Behavior Detection Based on the Real-Time Detection Transformer Algorithm 基于实时检测变换器算法的学生课堂行为检测研究

Applied Sciences Pub Date : 2024-07-15 DOI: 10.3390/app14146153

Lihua Lin, Haodong Yang, Qingchuan Xu, Yannan Xue, Dan Li

{"title":"Research on Student Classroom Behavior Detection Based on the Real-Time Detection Transformer Algorithm","authors":"Lihua Lin, Haodong Yang, Qingchuan Xu, Yannan Xue, Dan Li","doi":"10.3390/app14146153","DOIUrl":"https://doi.org/10.3390/app14146153","url":null,"abstract":"With the rapid development of artificial intelligence and big data technology, intelligent education systems have become a key research focus in the field of modern educational technology. This study aims to enhance the intelligence level of educational systems by accurately detecting student behavior in the classroom using deep learning techniques. We propose a method for detecting student classroom behavior based on an improved RT DETR (Real-Time Detection Transformer) object detection algorithm. By combining actual classroom observation data with AI-generated data, we create a comprehensive and diverse student behavior dataset (FSCB-dataset). This dataset not only more realistically simulates the classroom environment but also effectively addresses the scarcity of datasets and reduces the cost of dataset construction. The study introduces MobileNetV3 as a lightweight backbone network, reducing the model parameters to one-tenth of the original while maintaining nearly the same accuracy. Additionally, by incorporating learnable position encoding and dynamic upsampling techniques, the model significantly improves its ability to recognize small objects and complex scenes. Test results on the FSCB-dataset show that the improved model achieves significant improvements in real-time performance and computational efficiency. The lightweight network is also easy to deploy on mobile devices, demonstrating its practicality in resource-constrained environments.","PeriodicalId":502388,"journal":{"name":"Applied Sciences","volume":"44 50","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141645204","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