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Investigated behavior of the top-base foundation using finite element analysis 采用有限元方法研究了顶基础的受力特性
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.229e
M. Pham
{"title":"Investigated behavior of the top-base foundation using finite element analysis","authors":"M. Pham","doi":"10.31130/ud-jst.2022.229e","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.229e","url":null,"abstract":"Top-base foundation (TBF) is a cutting-edge technology in construction area. It is in terms of increasing the load-carrying capacity of the ground, reducing settlement, especially the difference in settlement between the footings, resisting earthquake loads, fast construction, friendly environment, and low construction cost. To date, most of the research has mainly focused on field and laboratory experimental studies. These studies require large costs, and take a long time. In addition, most practical experiments only determine the displacement field, while the stress field is difficult to determine precisely. Therefore, in this study, a finite element analysis (FEA) is proposed based on verification with the experimental results of previous studies. Consequently, the accuracy and reliability of the FEA can be assessed. Through the FEA procedure, it is possible to predict the stress field with high reliability, which can be applied in practice, bringing economic efficiency, especially suitable for current conditions in Vietnam.","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116606099","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
Degradation of chlothianidin from Dantutso 50WG in electrochemical process: Kinetics and role of reactive species 电化学降解丹图草50WG中氯噻虫胺的动力学及反应物质的作用
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.027e
Hoang Nguyen Tien
{"title":"Degradation of chlothianidin from Dantutso 50WG in electrochemical process: Kinetics and role of reactive species","authors":"Hoang Nguyen Tien","doi":"10.31130/ud-jst.2022.027e","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.027e","url":null,"abstract":"The kinetic degradation of clothianidin (CLO) (in Dantuso 50 WG) during electrochemical oxidation (EO) process using sulfate- and chloride-supporting electrolytes was comprehensively investigated. The degradation of CLO was not due to direct electron oxidation, but was mainly due to •OH and other radicals generated from supporting electrolytes. The degradation of CLO was significantly inhibited when increasing the concentration of nitrobenzene (NB), methanol (MeOH) and benzoic acid (BA). The second-order rate constant of •OH toward CLO was determined to be 3.23×109 M-1 s-1 using competition kinetics method. When SO42- and Cl- were used as supporting electrolytes, the degradation of CLO by •OH was the same with kCLO = 0.0084 min-1. Meanwhile, the higher removal of CLO in SO42--supporting electrolyte was due to the contribution of (SO4•-/S2O82-) more than that of (Cl•/HClO/ClO-).","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116781647","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
DOA Estimation Based on LSTM Neural Network with Uniform Linear Antenna Array 基于均匀线性天线阵LSTM神经网络的DOA估计
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.098ict
T. Trong, Ngo Duc Nam, Tran Van Hung
{"title":"DOA Estimation Based on LSTM Neural Network with Uniform Linear Antenna Array","authors":"T. Trong, Ngo Duc Nam, Tran Van Hung","doi":"10.31130/ud-jst.2022.098ict","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.098ict","url":null,"abstract":"Radio Direction Finding system is a system that determines the direction or coordinates of radio signal sources. The main function of this system is to determine the direction of arrival (DOA) of an incident radio wave. DOA information plays an important role in array signal processing and has many applications in communications, radar, seismic survey... In this paper, with the simulated signal data set obtained at the linear antenna array (ULA), the Long Short-Term Memory (LSTM) network model is used to estimate the DOA. The performance of the method is evaluated based on the RMSE parameter and compared with MUSIC, DNN algorithms in different cases such as: deviation of incident angle of radiation sources, signal-to-noise ratio (SNR).","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125463297","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
Using a Bi-Level Optimization Model for Assessing the Impact of Demand Forecast Uncertainty on the Maximum Profit of Power Distribution Companies Owning Energy Storage Systems 用双层优化模型评估需求预测不确定性对拥有储能系统的配电公司最大利润的影响
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.107e
Dang Vu Kien, Les Chau, Pham Quang Phuong, Phạm Năng Văn
{"title":"Using a Bi-Level Optimization Model for Assessing the Impact of Demand Forecast Uncertainty on the Maximum Profit of Power Distribution Companies Owning Energy Storage Systems","authors":"Dang Vu Kien, Les Chau, Pham Quang Phuong, Phạm Năng Văn","doi":"10.31130/ud-jst.2022.107e","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.107e","url":null,"abstract":"This paper proposes a bi-level optimization model to maximize the net revenue of a power distribution company owning energy storage systems. Furthermore, the proposed model also takes into account the uncertainty of load forecast based on a set of multiple scenarios in order to assess its impact on the maximum net revenue of the power distribution company. This bi-level optimization model is transformed into the single-level mixed-integer linear programming model by using the Karush-Kuhn-Tucker optimality conditions and strong duality theorem. This single-level optimization formulation can be effectively solved by using standard commercial solvers such as CPLEX. The proposed model and the effects of the load forecast uncertainty on the net revenue of the power distribution company are validated and analyzed on an IEEE 24-bus meshed transmission grid.","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115328392","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
Country-level determinants, takeover locations, and the gains to target firms 国家层面的决定因素、收购地点和目标公司的收益
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.191e
Hoang Cong Huan, Duong Nguyen Minh Huy Hoang
{"title":"Country-level determinants, takeover locations, and the gains to target firms","authors":"Hoang Cong Huan, Duong Nguyen Minh Huy Hoang","doi":"10.31130/ud-jst.2022.191e","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.191e","url":null,"abstract":"This study enhances the understanding of imperfect factor markets by examining the impact of country-level factors on takeover location decisions and the gains to target firms. The focus of this study is on eight East and Southeast Asian countries, where there have been significant changes regarding corporate governance structures and practices following the 1997-1998 Asian financial crisis. The results suggest that the likelihood that a completed deal is a cross-border acquisition rather than a domestic acquisition is higher for target countries with lower government quality, weaker investor protection, stronger restrictions on capital mobility, lower corporate tax rates, and more depreciated currencies. Further, the study documents that target firm shareholders experience positive and significant abnormal returns in both cross-border and domestic acquisitions around the announcement date; but cross-border target firms gain significantly higher returns than domestic target firms.","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115412778","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 a Sugeno Fuzzy Logic Controller Compared to a Mamdani-Based PI-Type Fuzzy Logic Inference Model Sugeno模糊控制器与基于mamdani的pi型模糊逻辑推理模型的比较研究
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.177ict
N. Tri, Nguyen Ngoc Khoat
{"title":"Research on a Sugeno Fuzzy Logic Controller Compared to a Mamdani-Based PI-Type Fuzzy Logic Inference Model","authors":"N. Tri, Nguyen Ngoc Khoat","doi":"10.31130/ud-jst.2022.177ict","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.177ict","url":null,"abstract":"Fuzzy logic – based control schemes have been selected as a perfect replacement for traditional regulators e.g. PI and PID due to their undeniable advantages such as no need of exact model and only depending upon expert’s experiences. It should be prominent in use from these fuzzy logic structures the PI-like Mamdani and Sugeno – based inference models have been widely used in academic studies. This paper focuses on creating a theoretical analysis and comparison for both of them. A typical case study regarding the speed control of a hydropower plant against various load changes is taken into consideration in order to demonstrate the applicability of the proposed control strategy. This is considered to be one of the most crucial control strategies for operation and stability of a hydropower plant. It was found that a lot of promising simulation results obtained by using Matlab/Simulink software when applying the PI-like Sugeno fuzzy logic controller are superior to those of the existing counterparts such as conventional PID and Mamdani – based one in dealing with the generator’s speed control problem presented in this study","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114200409","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
Local image fitting based active contour loss with deep learning for nuclei segmentation 基于深度学习的局部图像拟合主动轮廓损失核分割
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.100e
Thi-Thao Tran
{"title":"Local image fitting based active contour loss with deep learning for nuclei segmentation","authors":"Thi-Thao Tran","doi":"10.31130/ud-jst.2022.100e","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.100e","url":null,"abstract":"This paper proposes an approach for segmentation of nuclei images based on deep learning. In particular, the recent TransUnet inspired from transformers’ strong ability in modeling long-range context, is employed and adapted for the nuclei segmentation. For training the neural network, we propose a new loss inspired from active contour models with the guide of local image fitting. The loss when applied for the TransUnet has shown promising results over common Dice and Binary Cross Entropy loss functions. Our approach has been validated on the Data Science Bowl 2018 dataset, which includes 670 data folders for training model and 65 data folders for testing. State of the art models, such as FCN, SegNet, Unet, and DoubleU-Net are also conducted and evaluated. Quantitative assessments with high Dice similarity coefficient and Intersection over Union metrics demonstrate the performances of the proposed approach for nuclei segmentation.","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124473834","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
Factors affecting value added tax compliance behavior of enterprise: A study of the Tax Office of Binh Tan district, Ho Chi Minh city 影响企业增值税合规行为的因素——以胡志明市平滩区税务局为例
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.226e
Nguyen Phan Thu Hang Hang, Trinh Thi Nhan Trinh
{"title":"Factors affecting value added tax compliance behavior of enterprise: A study of the Tax Office of Binh Tan district, Ho Chi Minh city","authors":"Nguyen Phan Thu Hang Hang, Trinh Thi Nhan Trinh","doi":"10.31130/ud-jst.2022.226e","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.226e","url":null,"abstract":"The study identifies factors affecting the Value Added Tax compliance of taxpayer at The Tax Office of Binh Tan district, Ho Chi Minh city (HCMC). The study combines the qualitative and quantitative research methodologies by 2 steps of preliminary and official research. The official research was launched with quantitative method. Samples were selected by convenience sampling method with sample size of 300 corporate taxpayers. The results of multivariate regression analysis showed that 7 factors affecting the VAT compliance behavior of the corporate taxpayer from top to bottom, namely: Tax management, Awareness on penalty and criminal; Simplification of tax declaration; Financial position of corporate taxpayer; Trust on tax authority integrity; VAT knowledge; Awareness on equality. The main findings recommended some solutions to successfully facilitate the enterprises to improve their VAT compliance and help the tax authority to effectively manage VAT payments.","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129283941","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
Effects of exchange rate pass-through on inflation in Vietnam 汇率传递对越南通货膨胀的影响
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.179e
Huynh Huynh
{"title":"Effects of exchange rate pass-through on inflation in Vietnam","authors":"Huynh Huynh","doi":"10.31130/ud-jst.2022.179e","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.179e","url":null,"abstract":"The main purpose of this study is to investigate the effect of exchange rate pass-through (ERPT) on domestic price of goods and services in Vietnam under the impact of the interest rate and refinancing rate over the period 2014 to 2019. Unit root test and many Diagnostic tests are conducted before applying the Vector Auto Regressive (VAR) model. Estimation results indicate that exchange rate changes have a positive impact on domestic consumer price level means that an increase in the depreciation of Vietnam dong could cause an increase in domestic price, the degree of ERPT into domestic price level is smaller than interest rate and refinancing one. The study also indicates many problems existing in the actual situation in Vietnam. From those analysis results, the study has proposed monetary policy orientations to help stabilize prices and develop macroeconomics.","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130723063","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
Adaptive robust tracking RBF neural networks control for industrial robot minipulators based on backstepping 基于反步的工业机器人微机械自适应鲁棒跟踪RBF神经网络控制
Journal of Science and Technology Issue on Information and Communications Technology Pub Date : 2022-06-30 DOI: 10.31130/ud-jst.2022.294e
Vu Thi Yen Vu
{"title":"Adaptive robust tracking RBF neural networks control for industrial robot minipulators based on backstepping","authors":"Vu Thi Yen Vu","doi":"10.31130/ud-jst.2022.294e","DOIUrl":"https://doi.org/10.31130/ud-jst.2022.294e","url":null,"abstract":"This present study proposes a design and the analysis of the novel adaptive robust neural networks (ARNNs) based on the backstepping control method for industrial robot manipulators (IRMs). In this research, the ARNNs controller has combined the advantages of Radial Basis Function neural network (RBFNN), the robust term, and adaptive backstepping control technique without the requirement of prior knowledge. The RBFNN is used in order to approximate the unknown function to deal with external disturbances and uncertain nonlinearities. In addition, the disturbance of system is compensated by the robust Sliding Mode Control (SMC). All the parameters of ARNNs are determined by the Lyapunov stability theorem, are tuned online by an adaptive training law. Therefore, the stability, robustness, and desired tracking of the performance of ARNNs for IRMs are guaranteed.","PeriodicalId":262140,"journal":{"name":"Journal of Science and Technology Issue on Information and Communications Technology","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123201460","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
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