Engineering, Technology & Applied Science Research最新文献_第8页

Improving the Curvelet Saliency and Deep Convolutional Neural Networks for Diabetic Retinopathy Classification in Fundus Images 基于曲线显著性和深度卷积神经网络的眼底图像糖尿病视网膜病变分类

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4679

V. T. H. Tuyet, N. T. Binh, D. T. Tin

引用次数: 4

An Intelligent Detoxification Function of Liver Algorithm-Partial Transmit Sequence (IDFLA-PTS) for the Reduction of Peak to Average Power Ratio in Underwater Acoustic OFDM Communication 一种用于降低水声OFDM通信中峰均功率比的肝脏智能解毒算法-部分发射序列(IDFLA-PTS)

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4655

A. Ali, Bin Chen, Waleed Raza, A. Ali, H. Li

{"title":"An Intelligent Detoxification Function of Liver Algorithm-Partial Transmit Sequence (IDFLA-PTS) for the Reduction of Peak to Average Power Ratio in Underwater Acoustic OFDM Communication","authors":"A. Ali, Bin Chen, Waleed Raza, A. Ali, H. Li","doi":"10.48084/etasr.4655","DOIUrl":"https://doi.org/10.48084/etasr.4655","url":null,"abstract":"Intelligent algorithms in artificial intelligence have brought several benefits to digital signal processing. The boom in machine learning and intelligent systems provides new perspectives and methods to solve many research problems in Underwater Acoustic (UWA) Orthogonal Frequency Divisional Multiplexing (OFDM) communication. Partial transmit sequence is a tremendous technique for the mitigation of high Peak-to-Average Power Ratio (PAPR) in OFDM communication systems, but finding the optimum phase factors has still a few problems. In this paper, a Partial Transmit Sequence (PTS) based on an Intelligent Detoxification Function of Liver Algorithm-Partial Transmit Sequence (IDFLA-PTS) is proposed for the mitigation of PAPR in the UWA OFDM communication systems. This algorithm reduces the PAPR and the complexity of the proposed UWA OFDM model. The IDFLA-PTS is also compared with the Genetic Algorithm-Partial Transmit Sequence (GA-PTS). Besides this, the Bit Error Rate (BER) performance of the IDFLA-PTS is shown when a High Power Ampliﬁer (HPA) is used for the BELLHOP channel model. The experimental results of the proposed IDFLA-PTS method achieved nearly optimum results with fair complexity as compared to GA-PTS and boosted the BER performance.","PeriodicalId":11826,"journal":{"name":"Engineering, Technology & Applied Science Research","volume":"42 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75580536","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: 1

Stability Analysis of Boundary Layer Flow and Heat Transfer of Fe2O3 and Fe-Water Base Nanofluid οver a Stretching/Shrinking Sheet with Radiation Effect Fe2O3和fe -水基纳米流体ο在辐射拉伸/收缩薄片上边界层流动和传热的稳定性分析

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4649

H. B. Lanjwani, M. S. Chandio, K. Malik, M. Shaikh

{"title":"Stability Analysis of Boundary Layer Flow and Heat Transfer of Fe2O3 and Fe-Water Base Nanofluid οver a Stretching/Shrinking Sheet with Radiation Effect","authors":"H. B. Lanjwani, M. S. Chandio, K. Malik, M. Shaikh","doi":"10.48084/etasr.4649","DOIUrl":"https://doi.org/10.48084/etasr.4649","url":null,"abstract":"In this paper, the radiation and slip effects are investigated on the boundary layer flow and heat transfer of Fe2O3 and Fe-water base nanofluids over a porous stretching/shrinking sheet. A similarity transformation is used to convert the system of governing partial differential equations into ordinary differential equations, which are then numerically solved in Maple software with the help of the shooting technique. At different ranges of the applied parameters, dual solutions are found. The effects of the different physical factors such as radiation, nanoparticle volumetric fractions, suction, and slip parameters are determined and discussed. The skin-friction coefficient and local Nusselt number are influenced significantly by the applied parameters. In the boundary layer regime, the increase in nanoparticle volume fractions and radiation parameters enhance the temperature and boundary-layer thicknesses, while increasing Prandtl number, suction, and thermal slip parameters decrease the temperature and reduce thermal boundary-layer thicknesses. The suspension of iron nanoparticles shows more enhancement in skin friction and Nusselt number than the iron oxide nanoparticles in base fluid water.","PeriodicalId":11826,"journal":{"name":"Engineering, Technology & Applied Science Research","volume":"75 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74648359","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: 7

Hardware Acceleration of Video Edge Detection with Hight Level Synthesis on the Xilinx Zynq Platform 基于Xilinx Zynq平台的高电平合成视频边缘检测硬件加速

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4615

T. Saidani, R. Ghodhbani

引用次数: 1

Circuit Modeling and Analysis of Wearable Antennas on the Effect of Bending for Various Feeds 可穿戴天线电路建模及不同馈源弯曲影响分析

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4699

S. Mallavarapu, A. Lokam

{"title":"Circuit Modeling and Analysis of Wearable Antennas on the Effect of Bending for Various Feeds","authors":"S. Mallavarapu, A. Lokam","doi":"10.48084/etasr.4699","DOIUrl":"https://doi.org/10.48084/etasr.4699","url":null,"abstract":"The promising utilization of wearable antennas has experienced gigantic growth during the last decade. An antenna is one of the most significant and crucial components of wireless wearable devices. They need to be particularly designed to work while worn on and off the body. The wearable antenna embedded into clothing finds its use in wireless communications including tracking and navigation, mobile and wearable computing, and public safety and security. For user accessibility, there is a growing requirement for incorporating antennas on or in clothing. Determining the dielectric characteristics of the flexible substrates utilized in the design of the wearable antenna is also essential. In this paper, a Microstrip Ring Resonator (MRR) is employed to determine the dielectric properties of fabric substrates followed by state-of-the-art designs of wearable antennas and their bending effects at ISM band frequencies. An electrical equivalent model is designed to realize the potentials inside the geometry of an antenna under bending environment. This is followed by observing the effect of bending for different feeding methods on the wearable antenna's parameters when bending on a certain radius. The robustness of the proposed wearable antenna is examined by measuring the antenna under various bending curvatures for return loss, gain, and efficiencies. This will disclose the various contemplations for designing a wearable antenna from different feeding mechanisms with different materials and exemplifying the antenna's outcomes to dynamic moments of the human body. The performance of the proposed wearable antenna is acceptable even in a deformation environment, and there is a good agreement between the measured and the simulation results.","PeriodicalId":11826,"journal":{"name":"Engineering, Technology & Applied Science Research","volume":"12 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73383076","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: 10

DFT Investigation of the Structual and Optoelectronic Properties of Alkali Metal Hydrides MH (M=Li, Na) 碱金属氢化物MH (M=Li, Na)结构和光电性质的DFT研究

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4645

T. Iliass, H. Ziani, A. Gueddim, A. Guibadj

引用次数: 0

Hierarchical Control of a Low Voltage DC Microgrid with Coordinated Power Management Strategies 基于协调电源管理策略的低压直流微电网分级控制

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4625

S. Muchande, S. Thale

{"title":"Hierarchical Control of a Low Voltage DC Microgrid with Coordinated Power Management Strategies","authors":"S. Muchande, S. Thale","doi":"10.48084/etasr.4625","DOIUrl":"https://doi.org/10.48084/etasr.4625","url":null,"abstract":"A microgrid consists of a cluster of renewable energy sources, energy storage elements, and loads. One of the main objectives of a microgrid is to provide reliable and high-quality power to the loads. Under normal operating conditions, this is achieved through suitable Power Management Strategy (PMS). However, under emergency conditions, such as the failure of any source, overloads, or faults, the PMS may not be able to retain the microgrid in operating conditions. Any emergency condition may demand a significant change in control and coordination between various subsystems of the microgrid to survive and continue the operation. This feature makes a microgrid \"a fault resilient\" system as visualized in its objectives. This paper proposes a novel Coordinated Power Management (CPM) strategy based on three-layer hierarchical control for an autonomous Low Voltage DC (LVDC) microgrid. The proposed CPM strategy ensures the continuation of the microgrid operation under normal and emergency conditions. An emergency control layer is established to extend the microgrid operation during an emergency condition. The performance of the proposed control scheme is validated through simulation and experimental results.","PeriodicalId":11826,"journal":{"name":"Engineering, Technology & Applied Science Research","volume":"290 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77478346","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: 3

Investigation of Polycaprolactone/Carboxymethyl Cellulose Scaffolds by Mechanical and Thermal Analysis 聚己内酯/羧甲基纤维素支架的力学和热分析研究

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4711

N. Sriputtha, F. Wiwatwongwana, N. Promma

{"title":"Investigation of Polycaprolactone/Carboxymethyl Cellulose Scaffolds by Mechanical and Thermal Analysis","authors":"N. Sriputtha, F. Wiwatwongwana, N. Promma","doi":"10.48084/etasr.4711","DOIUrl":"https://doi.org/10.48084/etasr.4711","url":null,"abstract":"The objective of this work was to learn more about three-dimensional porous scaffolds made from biomaterial based on polycaprolactone (PCL) containing different amounts of carboxymethyl cellulose (CMC) nanoparticles. Composite material samples containing 0, 2, 6.5, 11, 15.5, and 20% w/w of CMC and PCL/CMC scaffolds were prepared with the use of the salt particle leached technique. The mechanical properties were evaluated with the compressive strength analysis method. The studied temperature range started at very low temperatures and ended at crosslinking temperatures. It was evaluated using the thermal analysis methods of Differential Scanning Calorimetry (DSC) in the range 0ºC-200ºC. The results revealed that the compressive modulus of blended PCL/CMC scaffold was higher than the one of pure PCL scaffold (582.2±106.2 kPa for pure PCL scaffold and 612.2±296 kPa for blended scaffold which contained 20% of CMC). For DSC analysis, in addition to the 15.5% w/w CMC PCL/CMC composite scaffold, other proportions of composite materials showed a decrease in crystallization temperature. The crystallinity of PCL-20% CMC was higher than that of PCL scaffolds.","PeriodicalId":11826,"journal":{"name":"Engineering, Technology & Applied Science Research","volume":"99 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77610877","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: 1

A Review on the Use of Machine Learning Against the Covid-19 Pandemic 机器学习在新冠肺炎大流行中的应用综述

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4628

S. A. A. Biabani, N. Tayyib

引用次数: 6

Surface Finish Comparison of Dry and Coolant Fluid High-Speed Milling of JIS SDK61 Mould Steel JIS SDK61模具钢干、冷液高速铣削表面光洁度比较

IF 1.5

Engineering, Technology & Applied Science Research Pub Date : 2022-02-12 DOI: 10.48084/etasr.4594

T. Le, V. B. Pham, T. Hoang

{"title":"Surface Finish Comparison of Dry and Coolant Fluid High-Speed Milling of JIS SDK61 Mould Steel","authors":"T. Le, V. B. Pham, T. Hoang","doi":"10.48084/etasr.4594","DOIUrl":"https://doi.org/10.48084/etasr.4594","url":null,"abstract":"This paper investigates the influence of dry high-speed milling on the surface quality of JIS SKD61 hard steel, compared to the conventional coolant fluid method. This research was conducted in a Super MC 500 high-speed CNC milling machine with a Hitachi coated carbide 20mm in diameter. High-speed cutting parameters such as cutting speed V, cutting depth t, and spindle speed S were considered as variants. The experiment was designed based on Taguchi's L9. Surface quality, including Ra and Rq, was measured using the Mitutoyo Surftest SV-210. A mathematical regression model was found for the average values of surface roughness through regression analysis for dry and coolant fluid conditions. The chosen high-speed milling parameters and the respective Ra and Rq values were obtained by ANOVA. The grey relation scores for wet and dry milling surface quality for cut depth, feed rate, and cutting speed were 0.7527, 0.7869, 0.6302, and 0.8167, 0.7199, 0.6040, respectively. The results showed that the feed rate had the greatest influence on the surface quality during the high-speed coolant milling of hardened steel, while the depth of the cut had the greatest influence on the surface quality during the high-speed dry milling process.","PeriodicalId":11826,"journal":{"name":"Engineering, Technology & Applied Science Research","volume":"13 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88665636","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: 6