Journal of Engineering Research and Reports最新文献

{"title":"Multiple Task Assignment Algorithms for Unmanned Aerial Vehicles","authors":"Abd Ur Rub, Xuanmin Lu","doi":"10.9734/jerr/2024/v26i71191","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i71191","url":null,"abstract":"To fulfill the requirement of assigning task the auction algorithm is widely used. There are many classical auction algorithms those performances not up to the mark while dealing with multi-UAVs dynamic task assignment. SWARM UAVs are made up of a large number of small UAVs with limited mission resources that can operate in an autonomous, appropriate and universal manner. Based on the in-depth research of the traditional auction algorithm CAA, this paper proposes an iterative method that can improve the task allocation efficiency of multi-UAV, namely the two-stage auction algorithm. At the same time, in order to improve the daily management of airborne computing and communication resources of UAV, this paper overcomes the difficulties caused by data coupling between task allocation and path planning, and proposes a decentralized task allocation algorithm, that is, UAV re-checks the unreasonable task allocation results within the task allocation cycle. This method has the advantages of algorithm security and unpredictability, and it can control the error of task assignment evaluation within a specific range through finite complexity calculation. Simulation results show that the algorithm is effective in computing efficiency and task execution efficiency.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"1 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141357694","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}

{"title":"Research Progress on Frost Durability of Rubber Recycled Concrete","authors":"Nan Ding","doi":"10.9734/jerr/2024/v26i71190","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i71190","url":null,"abstract":"Rubber recycled concrete is a new type of green concrete material that partially replaces natural coarse aggregate with recycled aggregate and partially replaces fine aggregate with rubber. Recycled rubber concrete not only improves the problem of poor frost durability of recycled concrete, but also solves the problem of large amounts of waste concrete and rubber difficult to deal with, as well as a series of ecological and environmental problems caused by this. Therefore, it is of great significance to carry out the research on the frost resistance of rubber recycled concrete to promote its application in cold regions. In this paper, based on the current status of domestic and international research on the freeze-thaw damage of rubber recycled concrete, the freeze-thaw damage mechanism of rubber recycled concrete is introduced, and its influencing factors and improvement measures are discussed, so as to provide a favorable basis for the research on the freeze-thaw damage of rubber recycled concrete.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"2 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141363427","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}

{"title":"Anchorage Bond Strength of Glass Fibre Polymer Reinforced Concrete with Palm Kernel Shells as Partial Coarse Aggregate","authors":"Francis Ohene-Coffie, Charles K. Kankam, Selase A. K. Kpo, George Oti Boateng, Ezekiel Sackitey Nanor","doi":"10.9734/jerr/2024/v26i71189","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i71189","url":null,"abstract":"In recent years, the use of GFRP reinforcing bars in place of steel reinforcing bars in concrete structures such as, buildings, roads, and bridges cannot be overlooked as they offer advantages such as higher tensile strength, corrosion resistance, reduced weight and cost effectiveness compared to steel reinforcing bars. The use of PKS as partial coarse aggregate in steel reinforced concrete has been studied by several researchers and found to produce lightweight concrete and reduce construction cost but, the application of GFRP reinforcing bars in LWC such as PKSC, presents a unique structural material with possibly different mechanical and structural properties which requires further studies and this study specifically focused on determining the anchorage bond strength of Glass Fibre Polymer reinforced concrete with PKS as partial coarse aggregate since the bond strength between concrete and reinforcing bars is a crucial prerequisite for the design of  reinforced concrete as a composite material. Normal weight concrete of mix ratio 1:1.5:3 with water-cement ratio (w/c) of 0.5 and lightweight concrete with 10% of the volume of coarse aggregate replaced by PKS were used in a total of forty-eight (48) double pull-out prismatic specimens of dimension 100mm x 100mm x 300mm for control and test specimens respectively, embedded with 12mm and 16mm diameter GFRP reinforcing bars at varying end-to-end embedment lengths (100mm, 125mm and 150mm) and 300mm continuous embedment. Average anchorage bond strength of 4.684N/mm2 and 3.558N/mm2 were respectively recorded for the PKSC with 12mm and 16mm diameter bars and 100mm embedment length and 3.051N/mm2 and 2.899N/mm2 respectively for PKSC specimens with 12mm and 16mm diameter bars and 150mm embedment length, indicating a decrease in anchorage bond strength with increasing (end-to-end) embedment length. However, the highest average anchorage bond strength of 6.174N/mm2 and 4.581N/mm2 were respectively recorded for PKSC specimens with 12mm and 16mm GFRP reinforcing bars and continuous (300mm) embedment length. Comparatively, the average percentage anchorage bond strength values ranging between 75.5-97.9% of that of NWC were recorded for PKSC and an increase in GFRP reinforcing bar diameter resulted in a decrease in anchorage bond strength. Splitting failure was observed for most of the specimens with longitudinal and transverse crack patterns developed after load application regardless of the size of GFRP reinforcing bar or concrete mix but the extent and visibility of the cracks formed reduced in specimens with continuous bar embedment.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141370564","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}

{"title":"Hyperparameter Tuning in Machine Learning: A Comprehensive Review","authors":"Justus A Ilemobayo, O. Durodola, Oreoluwa Alade, Opeyemi J Awotunde, Adewumi T Olanrewaju, Olumide Babatope Falana, Adedolapo Ogungbire, Abraham Osinuga, Dabira Ogunbiyi, Ark Ifeanyi, Ikenna E Odezuligbo, Oluwagbotemi E Edu","doi":"10.9734/jerr/2024/v26i61188","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i61188","url":null,"abstract":"Hyperparameter tuning is essential for optimizing the performance and generalization of machine learning (ML) models. This review explores the critical role of hyperparameter tuning in ML, detailing its importance, applications, and various optimization techniques. Key factors influencing ML performance, such as data quality, algorithm selection, and model complexity, are discussed, along with the impact of hyperparameters like learning rate and batch size on model training. Various tuning methods are examined, including grid search, random search, Bayesian optimization, and meta-learning. Special focus is given to the learning rate in deep learning, highlighting strategies for its optimization. Trade-offs in hyperparameter tuning, such as balancing computational cost and performance gain, are also addressed. Concluding with challenges and future directions, this review provides a comprehensive resource for improving the effectiveness and efficiency of ML models.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"19 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141375719","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}

{"title":"History Matching in a Reservoir Model Using an Automatic Approach","authors":"C. I. Ndubuka, Okon, Edet Ita","doi":"10.9734/jerr/2024/v26i61187","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i61187","url":null,"abstract":"History matching may be seen as an optimization problem based on minimizing an objective function that measures the mismatch between reservoir history and simulated data. Manual methods of history matching are largely cumbersome and grossly ineffective especially when the optimization parameters are large. Recourse to the manual method leads to development of models which cannot accurately predict the reservoir behaviour and thus are not suitable for predicting future behaviour of the reservoir. The only way out is the use of automatic methods especially those backed by artificial intelligence. The study aims at applying an automatic method to perform history matching in a reservoir model. The objectives will be to; Perform automatic history matching using ABC, match permeability distribution in the reservoir using oil production and bottom hole flowing pressure data and compare the effectiveness and convergence speed of the algorithm. History matching aims at fine-tuning the parameters used in building a reservoir model to closely match that of the real field. In this study, a very promising novel optimization algorithm has been employed to history a well-known reservoir model namely the PUNQ-S3 model. The model used for this study is the popular PUNQ-S3 reservoir model. PUNQ (Production forecasting with Uncertainty Quantification) is a joint industrial-academic project with the aim of developing efficient history matching and uncertainty quantification methods. Results obtained proves the algorithm used to be a very efficient optimization tool as the data used as the history of the study is nearly equaled by the optimization tool. We therefore conclude that the ABC algorithm be employed in performing tasks that demand high degree of accuracy.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"25 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141378347","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}

{"title":"Improve Customer Satisfaction through Effective Concrete Distribution Strategies","authors":"Shoufei Hu","doi":"10.9734/jerr/2024/v26i61186","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i61186","url":null,"abstract":"Concrete distribution is an indispensable part of urban construction. How to meet the needs of customers and improve customer satisfaction while scheduling vehicles has become a research hotspot. Aiming at the vehicle scheduling problem in concrete distribution, and considering the priority distribution of large customers can improve the satisfaction of large customers, and at the same time improve the long-term benefits of enterprises. This paper introduces the characteristics of concrete distribution, and analyzes the existing problems of concrete distribution, and puts forward countermeasures from the aspects of increasing policy support, improving the information level of commercial concrete distribution, and establishing the standard of commercial concrete distribution, so as to provide methods for solving the scheduling problem.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"335 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141380784","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}

{"title":"Structural Optimization of 60T Electric Mining Vehicle Frame: Finite Element Simulation Model and Analysis","authors":"Jialin Fan","doi":"10.9734/jerr/2024/v26i51152","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51152","url":null,"abstract":"Based on the research under the ore loading condition of the electric mine vehicle, this paper measures the physical frame of the 60T electric mine vehicle by means of rangefinder, ruler and drawings, and uses the software CATIA to complete the three-dimensional model of the frame and carriage of the electric mine vehicle, combined with the characteristics of ANSYS workbench software. The structure of the model is simplified. By comprehensively applying relevant knowledge of automobile dynamics, the frame load under full load condition is calculated, and the electric mine vehicle frame is applied by using ANSYS workbench software to simulate and optimize the three conditions of stationary, high-speed driving and turning before the mine car, and the position where the stress concentration and deformation of the frame structure are greatest. By increasing the thickness of the support plate and increasing its stress area, the overall weight was increased by 90.35kg, accounting for 0.9% of the total weight, and the weight increase was very small. Mechanical analysis was carried out on the three working conditions of the optimized frame of the mine car, and the stress was reduced by 25%, 24.1% and 39.2% respectively, effectively eliminating the stress concentration. The actual use of the vehicle can extend the service life of the frame, while improving the economy and stability of the vehicle.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"67 30","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140664132","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}

{"title":"Towards Sustainable IT Infrastructure: Integrating Green Computing with Data Warehouse and Big Data Technologies to Enhance Efficiency and Environmental Responsibility","authors":"Jennifer Chinelo Ugonnia, O. O. Olaniyi, Folashade Gloria Olaniyi, Abiodun Aliyah Arigbabu, Tunbosun Oyewale Oladoyinbo","doi":"10.9734/jerr/2024/v26i51151","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51151","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"69 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140667905","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}

{"title":"Design of a Circular Micro-strip Patch Antenna for Improved Directivity and Gain of Mobile Communication Base Station","authors":"Simon Okoh, J. E. Okhaifoh","doi":"10.9734/jerr/2024/v26i51149","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51149","url":null,"abstract":"This study presents the design of Circular Micro-strip Patch Antenna (CMPA) for improved directivity and gain of mobile communication base station. The design incorporates a Rogger/5880 substrate material with a permittivity of 2.2, tangent angle of 0.00009 and a substrate height (thickness) of 0.98μm at a frequency of 1.65THz.  Diversity Antenna Array Processing (DAAP) and Chebyshev Antenna Array (CAA) methods were used in the design. AutoCAD software and 2D data plotter were used for the diagrams and charts while Maple software was used for simulation. For angles of 0o, 30o, 60o, 90o, 120o, 150o and 180o, the array factors are 7.84dB, 7.85dB, 7.87dB, 7.88dB, 7.87dB, 7.85dB and 7.84db respectively. The results from the design demonstrated a remarkably low side lobe level of 0.01dB, indicating excellent suppression of unwanted radiation in undesired directions. Additionally, the antenna exhibits a Voltage Standing Wave Ratio (VSWR) of unity, ensuring maximum power transfer efficiency from the source to the load. Furthermore, the antenna shows a high directivity and gain of approximately 9dB, which enhances the signal strength and coverage range. The Half Power Beam-width (HPBW) and First Null Beam-width (FNBW) was measured as 300 and 600 respectively.  These parameters depict the angular width of the main radiation beam and the sharpness of the beam pattern’s nulls. In all, the designed CMPA with its CAA based antenna array holds great potential for communication networks and for mobile communication base station, offering enhanced performance in terms of radiation characteristics and signal quality.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"14 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140672324","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}

{"title":"Evaluating Internet Network Quality: A Comprehensive Analysis by the Pnup Directorate of Building","authors":"Ibrahim Abduh, Husain Syam, Abdul Muis M","doi":"10.9734/jerr/2024/v26i51150","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i51150","url":null,"abstract":"This study raises the problem of the condition of the building network of the Directorate of PNUP which has an irregular cabling structure so that if a network installation is carried out by connecting to the nearest switch without regard to cable paths, the cables are not on the path according to the irregular distribution of IP networks and bandwidth. The purpose of this study is to enhance the quality of the internet network in the PNUP Directorate building, compare the network performance before and after revitalizing fiber optic cables, and determine the internet bandwidth requirements in the PNUP Directorate building. The method employed is assessing internet network performance using Quality of Service parameter, by evaluating when the implementation that has been carried out is deemed sufficient, the evaluation is carried out based on the test results of the Quality of Service parameter. The user speed test is performed on public IP, followed by data recording and capture using tilnet tools. The values for delay, throughput, packet loss, and jitter are then processed and calculated. The outcome of this research demonstrates that network revitalization has successfully increased bandwidth usage, particularly in data transmission (Tx). Additional capacity and increased network performance after the revitalization allow for greater and more efficient use of bandwidth in transmitting data.","PeriodicalId":508164,"journal":{"name":"Journal of Engineering Research and Reports","volume":"18 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140675039","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}