Engineering reports : open access最新文献_第8页

Computing the stress intensity factor range for fatigue crack growth testing at 20 kHz 计算 20 千赫疲劳裂纹增长测试的应力强度因子范围

Engineering reports : open access Pub Date : 2023-10-12 DOI: 10.1002/eng2.12792

Mohamed Sadek, Jens Bergström, Nils Hallbäck

引用次数: 0

Deep learning and knowledge graph for image/video captioning: A review of datasets, evaluation metrics, and methods 图像/视频字幕的深度学习和知识图谱：数据集、评估指标和方法综述

Engineering reports : open access Pub Date : 2023-10-12 DOI: 10.1002/eng2.12785

Mohammad Saif Wajid, Hugo Terashima-Marin, Peyman Najafirad, Mohd Anas Wajid

{"title":"Deep learning and knowledge graph for image/video captioning: A review of datasets, evaluation metrics, and methods","authors":"Mohammad Saif Wajid, Hugo Terashima-Marin, Peyman Najafirad, Mohd Anas Wajid","doi":"10.1002/eng2.12785","DOIUrl":"10.1002/eng2.12785","url":null,"abstract":"Generating an image/video caption has always been a fundamental problem of Artificial Intelligence, which is usually performed using the potential of Deep Learning Methods, Computer Vision, Knowledge Graphs, and Natural Language Processing (NLP). The significant task of image/video captioning is to describe visual content in terms of natural language. Due to a semantic gap, this presents a massive problem in understanding and explaining images or videos syntactically and semantically. The current systems need somewhere to fill the gap between low-level and high-level features while mapping. Therefore, to tackle this problem, there is a need to describe the latest research and methods to overcome difficulties and to propose effective solutions. This work thoroughly analyses and investigates the most related methods (deep learning and knowledge graph-based approaches), benchmark datasets, and evaluation metrics with their benefits and limitations. Here we have also reviewed the state-of-the-art methods related to image/video captioning and their applications in the current scenario. Finally, we provide thorough information on existing research with comparisons of results on benchmark datasets. We have also mentioned the existing challenges and future direction of research.","PeriodicalId":72922,"journal":{"name":"Engineering reports : open access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eng2.12785","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135923414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of electrical power generation in various regions of Nepal through solar organic Rankine cycle technology 评估尼泊尔各地区通过太阳能有机郎肯循环技术发电的情况

Engineering reports : open access Pub Date : 2023-10-10 DOI: 10.1002/eng2.12791

Suresh Baral

{"title":"Assessment of electrical power generation in various regions of Nepal through solar organic Rankine cycle technology","authors":"Suresh Baral","doi":"10.1002/eng2.12791","DOIUrl":"10.1002/eng2.12791","url":null,"abstract":"The utilization of solar organic Rankine cycle (ORC) technology in Nepal shows promise due to its ample solar radiation. This technology should be harnessed for the purpose of generating solar energy. The academic version of engineering equation solver was used to develop simulation models, which predict the potential of solar ORC power generation across the country. The study is limited to areas with solar irradiance of 5.5 kWh/m2/day and excludes certain regions. The installation of the plant requires open land with access to water, and a 10 km2 land area was considered for the solar collector. The working fluids for the solar ORC plant are R245fa, R11, and R123. The simulation results showed a maximum overall system efficiency of 6.8%. The power output for various districts was also simulated, with Jumla having the highest power output, followed by Baitadi and Surkhet. The power output for different temperatures (90–120°C) using R245fa as the working fluid was 270, 320, 350, and 380 MW. Additionally, the study determined the cost of electricity production for the system with working fluids. The cost of electricity production was found to be 164.11$/MWh, and the levelized cost of electricity ranged from 220–265$/MWh. The payback period for the investment varies from 18 to 12 years with an internal rate of return of over 10%. Furthermore, a sensitivity analysis was conducted to ascertain the feasible investment strategies for the solar ORC system. Therefore, the study concludes that a solar ORC plant is technically feasible in Nepal for electrical power generation, with promising potential for clean energy generation.","PeriodicalId":72922,"journal":{"name":"Engineering reports : open access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eng2.12791","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136359808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unified multi-objective optimization for regional power systems with unequal distribution of renewable energy generation and load 可再生能源发电量和负荷分布不均的区域电力系统统一多目标优化

Engineering reports : open access Pub Date : 2023-10-10 DOI: 10.1002/eng2.12768

Long Zhao, Xiangfei Meng, Lichao Yang, Jia Wei

{"title":"Unified multi-objective optimization for regional power systems with unequal distribution of renewable energy generation and load","authors":"Long Zhao, Xiangfei Meng, Lichao Yang, Jia Wei","doi":"10.1002/eng2.12768","DOIUrl":"https://doi.org/10.1002/eng2.12768","url":null,"abstract":"The optimization for large-scale power systems with unequal renewable energy distribution is an important and urgent task to collaborate operations of the participated sub-grids. This article proposes a novel method by utilizing the unified multi-objective optimization (MOO) to integrate diverse strategies to a comprehensive problem. For this aim, individual optimal model is first established to describe the demands of each sub-grid. The overall objectives are unified in terms of economy costs. This unification integrates evaluate different optimized results without loss of generality. The global objective is the weighted sum of the individual objectives with empirical coefficient. Thus, the internal coupled restrictions and influences among sub-grids can be solved simultaneously. Finally, by adjusting the corresponding weights according to the preferred requirement, the optimized solution can effectively allocate renewable energy throughout all sub-grids. Consequently, both individual and global requirements can be met at utmost. The proposed unified MOO is tested on the configured systems based on multiple modified PJM 9-bus grids. Satisfying the global optimum of the multi-region joint system, the total system cost increases by 15.1%, the industrial zone cost increases by 21.4%, and the residential load shedding loss cost increases by 27.3%. Although each region has to sacrifice some of its benefits, the compromise operational behavior ensures that the total cost is optimal. Numerical results verify the effectiveness in achieving the promising global optimal solution, and the flexibility in meeting the requirements of different sub-grids.","PeriodicalId":72922,"journal":{"name":"Engineering reports : open access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eng2.12768","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50148180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Free-standing δ-MnO2 atomic sheets 独立的 δ-MnO2 原子片

Engineering reports : open access Pub Date : 2023-10-08 DOI: 10.1002/eng2.12787

Sumit Chahal, Tumesh Kumar Sahu, Subhasmita Kar, Harsh Ranjan, Soumya Jyoti Ray, Prashant Kumar

{"title":"Free-standing δ-MnO2 atomic sheets","authors":"Sumit Chahal, Tumesh Kumar Sahu, Subhasmita Kar, Harsh Ranjan, Soumya Jyoti Ray, Prashant Kumar","doi":"10.1002/eng2.12787","DOIUrl":"10.1002/eng2.12787","url":null,"abstract":"δ-Manganese dioxide (δ-MnO2) is a 2D material which possesses distinct properties and features due to its unique atomic structure and has already been utilized in numerous disciplines recently, especially in the field of magnetism, energy storage, magnetic resonance imaging, biocatalysts, and fluorescence sensing. Keeping an eye on the huge potential of this 2D material, we report our recent discovery of single-step synthesis of MnO2 nanosheets via bottom-up laser crystallization (of aqueous KMnO4 solution) and top-down sonochemical exfoliation of bulk MnO2 powder. The successful synthesis of δ-MnO2 nanosheets has been proved through the observation of characteristic Raman peaks at 173 and 634 cm−1 and characteristic X-ray diffraction peaks. The optical band gap was found to be 1.64 and 1.45 eV for both methods. We also demonstrated that 2D-MnO2 is a prominent candidate material for ammonia sensing and strain sensing. δ-MnO2 powder, when employed as cathode material in Li-ion batteries, results in a stable voltage of ˜0.5 V and in contrast, gives ˜1 V when used in Li-S batteries and the attained voltage is stable even for >5 h. New methods of synthesis of δ-MnO2 and its hybrids with graphene will lead to future generation devices, it is expected.","PeriodicalId":72922,"journal":{"name":"Engineering reports : open access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eng2.12787","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135251458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potential Working Principle for a Static Charge and Static Magnetic Motor 静电荷和静磁电机的电位工作原理

Engineering reports : open access Pub Date : 2023-10-05 DOI: 10.33140/eoa.01.03.03

引用次数: 0

CNN-SCNet: A CNN net-based deep learning framework for infant cry detection in household setting CNN-SCNet：基于 CNN 网络的深度学习框架，用于家庭环境中的婴儿哭声检测

Engineering reports : open access Pub Date : 2023-10-03 DOI: 10.1002/eng2.12786

Raiyan Jahangir

{"title":"CNN-SCNet: A CNN net-based deep learning framework for infant cry detection in household setting","authors":"Raiyan Jahangir","doi":"10.1002/eng2.12786","DOIUrl":"10.1002/eng2.12786","url":null,"abstract":"Infants are vulnerable to several health problems and cannot express their needs clearly. Whenever they are in a state of urgency and require immediate attention, they cry, which is a form of communication for them. Therefore, the parents of the infants always need to be alert and keep continuous supervision of their infants. However, parents cannot monitor their infants all the time. An infant monitoring system could be a possible solution to monitor the infants, determine when the infants are crying, and notify the parents immediately. Although many such systems are available, most cannot detect infant cries. Some systems have infant cry detection mechanisms, but those mechanisms are not very accurate in detecting infant cries because the mechanisms either include obsolete approaches or machine learning (ML) models that cannot identify infant cries from noisy household settings. To address this limitation, in this research, different conventional and hybrid ML models were developed and analyzed in detail to find out the best model for detecting infant cries in a household setting. A stacked classifier is proposed using different state-of-the-art technologies, outperforming all other developed models. The proposed CNN-SCNet's (CNN-Stacked Classifier Network) precision, recall, and f1-score were found to be 98.72%, 98.05%, and 98.39%, respectively. Infant monitoring systems can use this classifier to detect infant cries in noisy household settings.","PeriodicalId":72922,"journal":{"name":"Engineering reports : open access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eng2.12786","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135744885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring Instruction Set Architectural Variations: x86, ARM, and RISC-V in Compute-Intensive Applications 探索指令集架构变化:计算密集型应用中的x86、ARM和RISC-V

Engineering reports : open access Pub Date : 2023-10-02 DOI: 10.33140/eoa.01.03.04

{"title":"Exploring Instruction Set Architectural Variations: x86, ARM, and RISC-V in Compute-Intensive Applications","authors":"","doi":"10.33140/eoa.01.03.04","DOIUrl":"https://doi.org/10.33140/eoa.01.03.04","url":null,"abstract":"As computational demands continue to evolve in the modern era, the choice of hardware architecture plays a pivotal role in optimizing the performance of compute-intensive applications. This research paper delves into the exploration and comparison of three prominent hardware architectures: x86, ARM, and RISC-V, within the context of compute-intensive applications. The study begins with a comprehensive overview of these architectures, highlighting their distinctive features, and strengths. Subsequently, we investigate their suitability and adaptability in diverse compute-intensive workloads. Our analysis encompasses a wide spectrum of parameters, including computational throughput, power efficiency, scalability, and architectural flexibility. We scrutinize the architectural intricacies that impact the execution of compute-intensive tasks, shedding light on both the advantages and limitations of each architecture. We used the gem5 simulator to compare these Instruction Set Architectures (ISA). We run different benchmarks on gem5 with different ISA and different configurations and compare the result. Based on these results we predict which architecture is better in which scenario. Gem5 is not a cycle accurate simulator but it’s a model accurate. In conclusion, \"Exploring Architectural Variations: x86, ARM, and RISC-V in Compute-Intensive Applications\" offers a comprehensive insight into the nuances of hardware selection for compute-intensive workloads. Our findings aid system architects, researchers, and technology enthusiasts in making informed decisions about the most suitable architectural choice for their specific computeintensive applications, ultimately contributing to advancements in computational performance and efficiency","PeriodicalId":72922,"journal":{"name":"Engineering reports : open access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135948761","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

Predicting construction accidents on sites: An improved atomic search optimization algorithm approach 预测工地施工事故：改进的原子搜索优化算法方法

Engineering reports : open access Pub Date : 2023-09-27 DOI: 10.1002/eng2.12773

Chaoqiong Liu, Li Li, Yue Qiang, Shixin Zhang

{"title":"Predicting construction accidents on sites: An improved atomic search optimization algorithm approach","authors":"Chaoqiong Liu, Li Li, Yue Qiang, Shixin Zhang","doi":"10.1002/eng2.12773","DOIUrl":"10.1002/eng2.12773","url":null,"abstract":"Construction accidents in the construction industry cause a large amount of property damage and human casualties. Therefore, avoiding construction accidents as much as possible is a problem that engineers have been working on for a long time. Currently, few construction managers use artificial intelligence methods for construction safety management. The purpose of this article is to propose a new artificial neural network (ANN) prediction model to provide early warning for future construction and to provide reference for construction organization decision-makers. In the proposed method, atomic search optimization algorithm is used to optimize the weights and thresholds of back propagation neural network, and the Tent chaotic mapping is used to initialize the population to increase the diversity of the population. The statistical data of production safety accidents of housing and municipal engineering in China from 2015 to 2019 are used as an example, and the prediction results of the proposed model are compared with back-propagation neural network (BPNN) and wavelet neural network (WNN). The mean absolute error (MAE) of predicting construction accidents is 0.2225, with small fluctuations in the predicted results. The mean absolute percentage error (MAPE) of the predictions is 0.6048%. The research results indicate that IASO-BPNN has higher prediction accuracy than standard BPNN and WNN, providing judgment methods for ensuring construction progress and decision support for construction organization decision-makers.","PeriodicalId":72922,"journal":{"name":"Engineering reports : open access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eng2.12773","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135580166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of bioethanol from mixed vegetable wastes: Experimental methodology and characterization 利用混合蔬菜废料合成生物乙醇：实验方法和特性分析

IF 1.8

Engineering reports : open access Pub Date : 2023-09-27 DOI: 10.1002/eng2.12784

Guillermo Manuel González-Guerra, José Ramón Garate Ruiz, Kazuhiro Santos Tanamachi, María del Pilar Restrepo-Elorza, Fernando Israel Gómez-Castro, Salvador Hernández, Juan Cristóbal García-García, Zeferino Gamiño-Arroyo

{"title":"Synthesis of bioethanol from mixed vegetable wastes: Experimental methodology and characterization","authors":"Guillermo Manuel González-Guerra, José Ramón Garate Ruiz, Kazuhiro Santos Tanamachi, María del Pilar Restrepo-Elorza, Fernando Israel Gómez-Castro, Salvador Hernández, Juan Cristóbal García-García, Zeferino Gamiño-Arroyo","doi":"10.1002/eng2.12784","DOIUrl":"10.1002/eng2.12784","url":null,"abstract":"Bioethanol has been identified as a renewable product with high potential for application as biofuel. On the other hand, high volumes of agri-food residues are generated daily. Such residues have potential as raw materials for industrial bioethanol production. There is a significant advance in the synthesis of biofuels from fruit and vegetable residues; however, most of the studies are focused on the conversion of a single type of raw material, limiting the application of the synthesis routes. This work presents a conversion methodology to produce bioethanol from carrot and broccoli residues and from their mixture; the samples of vegetable wastes has been collected in the municipality of Guanajuato, Mexico. Using the 1H NMR technique, the characteristic signals of bioethanol are identified. On the other hand, using the UV–VIS spectrophotometry technique, a maximum of 25.63 mg of total sugar content has been determined for the mixture. Likewise, a maximum bioethanol concentration of 60.6 g/L is obtained. From a refractometry and HPLC study, a conversion to bioethanol of 34.8% is determined for the mixture of residues. This work analyses the potential of broccoli and carrot residues for bioethanol production, either as isolated or as mixed wastes.","PeriodicalId":72922,"journal":{"name":"Engineering reports : open access","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eng2.12784","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135582148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0