{"title":"The Compact Slotted Pentaband Inset-Fed Microstrip Patch Antenna for Wireless Applications","authors":"Parimal Tiwari, K. K. Verma, Chandan","doi":"10.25103/jestr.171.20","DOIUrl":"https://doi.org/10.25103/jestr.171.20","url":null,"abstract":"","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"1101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140467228","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}
Khushi Singh, S. Kharche, Aakash Chauhan, Pranali Salvi
{"title":"PCB Defect Detection Methods: A Review of Existing Methods and Potential Enhancements","authors":"Khushi Singh, S. Kharche, Aakash Chauhan, Pranali Salvi","doi":"10.25103/jestr.171.19","DOIUrl":"https://doi.org/10.25103/jestr.171.19","url":null,"abstract":"","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"197 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140467831","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}
Yunyun Wu, Han Liu, Xia Kong, Min Deng, Youfeng Li
At present, the demand for the simulation technology of infrared view is markedly expanding. However, the related main research orientations are influenced by numerous factors. Thus, the availability of infrared images for special scenes is difficult to determine, and their practical applications are limited. This study proposed a method based on generative adversarial network (GAN) to reveal its influence on the generation of infrared texture and produce infrared texture in infrared view simulation. By combining the needs of texture generation in infrared simulation and the superiority of image style transfer in texture generation, three algorithms for style transfer based on GAN, namely, Algorithms I, II, and III, were introduced to establish pretrained models. Simulation results of the three models were then evaluated using histograms, structural similarity (SSIM), and peak signal-to-noise ratio (PSNR), and the effects of colors of the infrared images in the texture generation were compared. The validity of these models was also verified. Results demonstrate that infrared images in a specified scene can be simulated without the need for a large number of training datasets, and the simulation images generated by transferring in black-and-white infrared style images are better than those in color infrared style images. The histogram evaluation index shows that Algorithm III is higher than Algorithms I and II by approximately 0.06. The SSIM evaluation index reveals that Algorithm II is higher than Algorithms I and II by 0.09 and 0.06 dB, respectively. The PSNR evaluation index indicates that Algorithm III is higher than Algorithms I and II by approximately 0.31 dB. Thus, this study provides a practical value in the field of infrared simulation technology.
目前，对红外视景仿真技术的需求明显扩大。然而，相关的主要研究方向受到诸多因素的影响。因此，特殊场景红外图像的可用性难以确定，其实际应用也受到限制。本研究提出了一种基于生成对抗网络（GAN）的方法，揭示其对红外纹理生成的影响，并在红外视景模拟中生成红外纹理。结合红外仿真中纹理生成的需求和图像风格转移在纹理生成中的优越性，引入了三种基于 GAN 的风格转移算法，即算法 I、算法 II 和算法 III，建立了预训练模型。然后使用直方图、结构相似度（SSIM）和峰值信噪比（PSNR）评估了三种模型的仿真结果，并比较了红外图像的颜色对纹理生成的影响。这些模型的有效性也得到了验证。结果表明，无需大量的训练数据集就能模拟指定场景中的红外图像，而且在黑白红外风格图像中传输生成的模拟图像比在彩色红外风格图像中传输生成的模拟图像更好。直方图评价指标显示，算法 III 比算法 I 和算法 II 高约 0.06。SSIM 评估指数显示，算法 II 分别比算法 I 和 II 高 0.09 和 0.06 dB。PSNR 评估指数表明，算法 III 比算法 I 和 II 高约 0.31 dB。因此，本研究在红外模拟技术领域具有实用价值。
{"title":"Simulation and Evaluation of GAN-based Implementation of Infrared Texture Generation","authors":"Yunyun Wu, Han Liu, Xia Kong, Min Deng, Youfeng Li","doi":"10.25103/jestr.171.16","DOIUrl":"https://doi.org/10.25103/jestr.171.16","url":null,"abstract":"At present, the demand for the simulation technology of infrared view is markedly expanding. However, the related main research orientations are influenced by numerous factors. Thus, the availability of infrared images for special scenes is difficult to determine, and their practical applications are limited. This study proposed a method based on generative adversarial network (GAN) to reveal its influence on the generation of infrared texture and produce infrared texture in infrared view simulation. By combining the needs of texture generation in infrared simulation and the superiority of image style transfer in texture generation, three algorithms for style transfer based on GAN, namely, Algorithms I, II, and III, were introduced to establish pretrained models. Simulation results of the three models were then evaluated using histograms, structural similarity (SSIM), and peak signal-to-noise ratio (PSNR), and the effects of colors of the infrared images in the texture generation were compared. The validity of these models was also verified. Results demonstrate that infrared images in a specified scene can be simulated without the need for a large number of training datasets, and the simulation images generated by transferring in black-and-white infrared style images are better than those in color infrared style images. The histogram evaluation index shows that Algorithm III is higher than Algorithms I and II by approximately 0.06. The SSIM evaluation index reveals that Algorithm II is higher than Algorithms I and II by 0.09 and 0.06 dB, respectively. The PSNR evaluation index indicates that Algorithm III is higher than Algorithms I and II by approximately 0.31 dB. Thus, this study provides a practical value in the field of infrared simulation technology.","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"39 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463253","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}
Massive concrete caps usually adopt cooling pipe water cooling to reduce the negative impact of the hydration heat of cement in construction. However, unreasonable cooling pipe layout, water temperature
大体积混凝土盖通常采用冷却管水冷却，以减少施工中水泥水化热的负面影响。然而，冷却管布置不合理，水温
{"title":"Optimization Analysis of Temperature Control of Massive Concrete Caps Based on Water Cooling of Cooling Pipes","authors":"Guanghui Wang, Zhonglin Tang, Yuhao Wang, Zhuqiang Tang, Zhenhao Zhang","doi":"10.25103/jestr.171.22","DOIUrl":"https://doi.org/10.25103/jestr.171.22","url":null,"abstract":"Massive concrete caps usually adopt cooling pipe water cooling to reduce the negative impact of the hydration heat of cement in construction. However, unreasonable cooling pipe layout, water temperature","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"33 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465366","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}
With the rapid economic development in China, coal resources are being exploited greatly, which easily causes geological disasters due to surface subsidence. Fast and accurate surface subsidence monitoring and forecasting in mining regions are important references to analyze surface variation laws and disaster warning. However, differential interferometric synthetic aperture radar (D-InSAR) in mine surface monitoring is highly sensitive to spatiotemporal baseline and atmospheric delay. In addition, traditional machine learning algorithms have complicated network structures and difficulties determining parameters. Small baseline subsets InSAR (SBAS-InSAR) and extreme learning machine (ELM) dynamic prediction were combined for corresponding experimental studies to address these problems. On the basis of SBAS-InSAR, surface subsidence monitoring data in mining areas in Pingdingshan City, China, were collected, and a comparative analysis of D-InSAR monitoring data was performed, which verified the validity of SBAS-InSAR monitoring. On the basis of SBAS-InSAR data, a prediction model was built by ELM. The model results were compared with the prediction results of back propagation (BP) neural network and support vector machine (SVM) through root mean square error (RMSE) and mean relative error (MRE). Results demonstrate that the surface subsidence prediction of SBAS-InSAR in the monitoring mining area can reach millimeter accuracy. The MRE values of ELM, BP, and SVM prediction are maintained within 2%, 5%, and 8%, and the RMSE values are less than 3 mm, 7 mm, and 10 mm, respectively, thereby indicating that ELM prediction has high accuracy and reliability. This study provides an important evidence for safe production and scientific disaster prevention and reduction in mining areas.
{"title":"Monitoring and Prediction of Surface Subsidence in Mining Areas by Integrating SBAS-InSAR and ELM","authors":"Ning Gao, Qianhong Pu","doi":"10.25103/jestr.171.07","DOIUrl":"https://doi.org/10.25103/jestr.171.07","url":null,"abstract":"With the rapid economic development in China, coal resources are being exploited greatly, which easily causes geological disasters due to surface subsidence. Fast and accurate surface subsidence monitoring and forecasting in mining regions are important references to analyze surface variation laws and disaster warning. However, differential interferometric synthetic aperture radar (D-InSAR) in mine surface monitoring is highly sensitive to spatiotemporal baseline and atmospheric delay. In addition, traditional machine learning algorithms have complicated network structures and difficulties determining parameters. Small baseline subsets InSAR (SBAS-InSAR) and extreme learning machine (ELM) dynamic prediction were combined for corresponding experimental studies to address these problems. On the basis of SBAS-InSAR, surface subsidence monitoring data in mining areas in Pingdingshan City, China, were collected, and a comparative analysis of D-InSAR monitoring data was performed, which verified the validity of SBAS-InSAR monitoring. On the basis of SBAS-InSAR data, a prediction model was built by ELM. The model results were compared with the prediction results of back propagation (BP) neural network and support vector machine (SVM) through root mean square error (RMSE) and mean relative error (MRE). Results demonstrate that the surface subsidence prediction of SBAS-InSAR in the monitoring mining area can reach millimeter accuracy. The MRE values of ELM, BP, and SVM prediction are maintained within 2%, 5%, and 8%, and the RMSE values are less than 3 mm, 7 mm, and 10 mm, respectively, thereby indicating that ELM prediction has high accuracy and reliability. This study provides an important evidence for safe production and scientific disaster prevention and reduction in mining areas.","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"459 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140468072","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}
Kirubakaran Namaskaram, Parijatham Rajagopal, Baby Munirathinam Rathinam, Amalorpava Mary Rajee Samuel, Sridevi Cheguri, M. F. Nisha
{"title":"RIS enabled NOMA for Resource Allocation in Beyond 5G Networks","authors":"Kirubakaran Namaskaram, Parijatham Rajagopal, Baby Munirathinam Rathinam, Amalorpava Mary Rajee Samuel, Sridevi Cheguri, M. F. Nisha","doi":"10.25103/jestr.171.02","DOIUrl":"https://doi.org/10.25103/jestr.171.02","url":null,"abstract":"","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"46 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465764","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}
Automotive relays are used in vehicles, subject to various mechanical vibration levels during regular operation. Vibration analysis helps ensure that the relay can withstand these vibrations without malfunctioning. It is essential for the relay's durability and long-term dependability. In this work, vibration analysis is carried out for the relay using an electrodynamic shaker, and the electrical contact resistance (ECR) is obtained. Relays used in vehicles undergo vibration because of the environmental and on-road conditions. Hence, vibration analysis is mandatory for automotive relays. ECR is obtained under DC and AC static environments with a frequency of 10 Hz to 70 Hz. Vibration analysis is carried out using an electrodynamic shaker experimental setup. Finite Element Analysis (FEA) using COMSOL Multiphysics is carried out to obtain the electrical and mechanical parameters of relay electrical contact. The highest current density occurs at the contact surface edges that have been visualized. Vibration analysis examines the dynamic behavior of electrical contacts in relays. This study also delves into prescribed displacement, Von Mises stress, and total displacement performance under dynamic conditions.
{"title":"Vibration Analysis and Electrical Contact Resistance Assessment for Automotive Relays","authors":"Thanigaivelraja Mohandoss, Femi Robert","doi":"10.25103/jestr.171.13","DOIUrl":"https://doi.org/10.25103/jestr.171.13","url":null,"abstract":"Automotive relays are used in vehicles, subject to various mechanical vibration levels during regular operation. Vibration analysis helps ensure that the relay can withstand these vibrations without malfunctioning. It is essential for the relay's durability and long-term dependability. In this work, vibration analysis is carried out for the relay using an electrodynamic shaker, and the electrical contact resistance (ECR) is obtained. Relays used in vehicles undergo vibration because of the environmental and on-road conditions. Hence, vibration analysis is mandatory for automotive relays. ECR is obtained under DC and AC static environments with a frequency of 10 Hz to 70 Hz. Vibration analysis is carried out using an electrodynamic shaker experimental setup. Finite Element Analysis (FEA) using COMSOL Multiphysics is carried out to obtain the electrical and mechanical parameters of relay electrical contact. The highest current density occurs at the contact surface edges that have been visualized. Vibration analysis examines the dynamic behavior of electrical contacts in relays. This study also delves into prescribed displacement, Von Mises stress, and total displacement performance under dynamic conditions.","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"28 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140464925","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}
Michail Chalaris, Nikolaos Iliopoulos, Christos Pallikarakis, D. Kolaitis
The fire extinguishing performance, in a simulation with field experiment of wildland fire, of liquid BONPET and pure water was studied. The results show that 6% BONPET liquid has better performance than pure water. The fire extinguishing simulation shows that the extinguishing performance of liquid BONPET 6% reduces the temperature at the burning area more quickly, showing a better cooling effect than water. Furthermore, shows that achieved 80% water saving and 60% faster extinguishing with the use of 6% BONPET liquid. Moreover, it has been observed that the utilization of BONPET liquid for fire suppression leads to reduced collateral damage. This is attributed to the unique properties of BONPET liquid, as its non-decomposed components persist on the surface following extinguishment. These residual components possess the capability to disintegrate and facilitate surface cooling in the event of a minor temperature rise.
{"title":"A Field Study of an Extinguishing Material for use in Forest and Wildland-Urban Interface Fires","authors":"Michail Chalaris, Nikolaos Iliopoulos, Christos Pallikarakis, D. Kolaitis","doi":"10.25103/jestr.171.15","DOIUrl":"https://doi.org/10.25103/jestr.171.15","url":null,"abstract":"The fire extinguishing performance, in a simulation with field experiment of wildland fire, of liquid BONPET and pure water was studied. The results show that 6% BONPET liquid has better performance than pure water. The fire extinguishing simulation shows that the extinguishing performance of liquid BONPET 6% reduces the temperature at the burning area more quickly, showing a better cooling effect than water. Furthermore, shows that achieved 80% water saving and 60% faster extinguishing with the use of 6% BONPET liquid. Moreover, it has been observed that the utilization of BONPET liquid for fire suppression leads to reduced collateral damage. This is attributed to the unique properties of BONPET liquid, as its non-decomposed components persist on the surface following extinguishment. These residual components possess the capability to disintegrate and facilitate surface cooling in the event of a minor temperature rise.","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"31 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465381","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":"Numerical Simulation Study on the Mechanical Properties of the Surrounding Rock in Tunnel Boring Machine Inclined Shaft","authors":"Lulu Liu, Junyuan Yan, Shenggaoya Cao","doi":"10.25103/jestr.171.05","DOIUrl":"https://doi.org/10.25103/jestr.171.05","url":null,"abstract":"","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"59 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465347","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}
Ramika Ngangbam, Ashraf Hossain, Alok Shukla, M. S. Meetei
In present days, wireless sensor network (WSN) plays an important role in the domain of networks because of its vast applications in various fields. Sensor nodes (SNs) or nodes which are infinitesimally small in sizes are involved in the functioning of WSN for observing and monitoring the environmental phenomena by deploying these nodes in the region of interest. These tiny nodes are energy constrained and also have limited resources. Hence, various cluster-based routing techniques have been developed to optimise the energy utilisation of sensor nodes for extending network lifespan. LEACH is one of the most eminent cluster-based protocols where many derivative protocols have been proposed and still huge efforts are being contributed by many researchers to propose new algorithms based on the parent LEACH protocol. In this paper we represent a survey on LEACH based protocols related with the various modified techniques of cluster head selection. In cluster-based LEACH protocol cluster heads spend much more energy than that of energy by other nodes in the cluster. Therefore, proper selection of cluster heads is necessary in order to optimise the energy efficiency of a network. This paper reviews mainly the various modified election probability of cluster head selection and threshold condition based on LEACH protocol to provide a brief idea of these improvement techniques to the readers.
{"title":"A Review Summary on Various Cluster-Head Selection Improvement Techniques for LEACH-Based Protocols in Wireless Sensor Networks","authors":"Ramika Ngangbam, Ashraf Hossain, Alok Shukla, M. S. Meetei","doi":"10.25103/jestr.171.18","DOIUrl":"https://doi.org/10.25103/jestr.171.18","url":null,"abstract":"In present days, wireless sensor network (WSN) plays an important role in the domain of networks because of its vast applications in various fields. Sensor nodes (SNs) or nodes which are infinitesimally small in sizes are involved in the functioning of WSN for observing and monitoring the environmental phenomena by deploying these nodes in the region of interest. These tiny nodes are energy constrained and also have limited resources. Hence, various cluster-based routing techniques have been developed to optimise the energy utilisation of sensor nodes for extending network lifespan. LEACH is one of the most eminent cluster-based protocols where many derivative protocols have been proposed and still huge efforts are being contributed by many researchers to propose new algorithms based on the parent LEACH protocol. In this paper we represent a survey on LEACH based protocols related with the various modified techniques of cluster head selection. In cluster-based LEACH protocol cluster heads spend much more energy than that of energy by other nodes in the cluster. Therefore, proper selection of cluster heads is necessary in order to optimise the energy efficiency of a network. This paper reviews mainly the various modified election probability of cluster head selection and threshold condition based on LEACH protocol to provide a brief idea of these improvement techniques to the readers.","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"563 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140468424","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}
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