International journal of engineering science and technology最新文献_第10页

DIGITAL TWIN CONCEPT FOR INDONESIA DIGITAL GOVERNMENT INFORMATION TECHNOLOGY GOVERNANCE 数字孪生概念:印尼数字政府信息技术治理

International journal of engineering science and technology Pub Date : 2022-07-19 DOI: 10.56127/ijst.v1i2.146

Hari Setiabudi Husni, Ford Lumban Gaol, Suhono Harso Supangkat, Benny Ranti

{"title":"DIGITAL TWIN CONCEPT FOR INDONESIA DIGITAL GOVERNMENT INFORMATION TECHNOLOGY GOVERNANCE","authors":"Hari Setiabudi Husni, Ford Lumban Gaol, Suhono Harso Supangkat, Benny Ranti","doi":"10.56127/ijst.v1i2.146","DOIUrl":"https://doi.org/10.56127/ijst.v1i2.146","url":null,"abstract":"This paper explores the possibility of digital twin concept implementation framework in Indonesia Digital Government Systems (IDGS) using Information Technology (IT) Governance indicators states in Indonesian Government regulation. The concept of Indonesia Digital Government regulated by Indonesia Presidential Regulation no. 95 year 2018 that define digital government as a governance that adapting to advances of technology information and communication and utilize optimally so it can provide service to citizen in most efficient and effective way. Indonesia government implement IT Governance using regulation publish by the Minister of State Apparatus and Bureaucracy Reform No. 59 year 2020 about monitoring and evaluation of Indonesia Digital Government System. In the regulation, the governance consists of monitoring, which is a systematic assessment process through verification of information on the results of the Self-Assessment to measure the maturity level of implementation and the evaluation, is a process of self-assessment systematically through verification and clarification of information which can be continued with information validation to the results of the Self-Assessment to measure maturity level of digital government system implementation. The concept of exploiting digital twin concept to Governed IT Management is a framework introduce by Geert Poels, Henderik A. Proper and Dominik Bork in 2021. The Digital Twin concept itself already utilize to do such as monitoring data, data analysis, conduct simulation, and enhances performance of assets. The framework will be use as a technology infrastructure reference model that facilitate Digital Twin in conceptual aspect where process of IT governance, organizational IT assets management and IT management processes, connected.","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82393925","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

ANALYSIS OF THE EFFECT OF WEBSITE SERVICE QUALITY AND TRUST ON USER SATISFACTION WITH WEBQUAL METHOD IN E-COMMERCE INDONESIA 用webqual方法分析印尼电子商务网站服务质量和信任对用户满意度的影响

International journal of engineering science and technology Pub Date : 2022-07-19 DOI: 10.56127/ijst.v1i2.220

Tubagus Achmadi

{"title":"ANALYSIS OF THE EFFECT OF WEBSITE SERVICE QUALITY AND TRUST ON USER SATISFACTION WITH WEBQUAL METHOD IN E-COMMERCE INDONESIA","authors":"Tubagus Achmadi","doi":"10.56127/ijst.v1i2.220","DOIUrl":"https://doi.org/10.56127/ijst.v1i2.220","url":null,"abstract":"This study aims to analyze the quality of the Shopee and Lazada Indonesia websites which have beenmeasured using the Webqual method. To find out in the midst of the COVID-19 outbreak like this, whethermany people are switching to online shopping or are still loyal to shopping directly at the market, and users'trust in making non-cash payments. The research methodology used is a qualitative approach. The sampleused is people from any circle who have made purchases at Shopee or Lazada at least 1 time as many as 100respondents. The data collection instrument used primary data. Primary data was obtained by using aquestionnaire distributed through social media. Analysis of the data used in this study were normality test,multicollinearity test, heteroscedasticity test, multiple linear regression analysis test, f test and t test with thehelp of SPSS version 22. By showing the Asymp value. Sig (2-tailed) shows 0.200. Because the value ofAsymp. Sig (2-tailed) > 0.050 this means that the residual data is normally distributed so that the data can beaccepted. The VIF value of X1 and X2 is less than 10 and the tolerance value is more than 0.10. So, it can beconcluded that in the regression model there is no multicollinearity. The scatterplot graph shows that thepoints spread randomly and are spread both above and below zero on the Y axis, there is no heteroscedasticity.The constant of 10.215 states that if the independent variables, namely website quality and trust, areconsidered constant. H1 is accepted, namely the quality of the website has a significant positive effect onuser satisfaction, this can be seen in the significance value of 0.003 or p value <0.05.","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88165025","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

An innovative approach to classify hierarchical remarks with multi-class using BERT and customized naïve bayes classifier 一种利用BERT和自定义naïve贝叶斯分类器进行多类分层备注分类的创新方法

International journal of engineering science and technology Pub Date : 2022-05-30 DOI: 10.4314/ijest.v13i4.4

M. Dhina, S. Sumathi

{"title":"An innovative approach to classify hierarchical remarks with multi-class using BERT and customized naïve bayes classifier","authors":"M. Dhina, S. Sumathi","doi":"10.4314/ijest.v13i4.4","DOIUrl":"https://doi.org/10.4314/ijest.v13i4.4","url":null,"abstract":"Text classification is the process of grouping text into distinct categories. Text classifiers may automatically assess text input and allocate a set of pre-defined tags or categories depending on its content or a pre-trained model using Natural Language Processing (NLP), which actually is a subset of Machine Learning (ML). The notion of text categorization is becoming increasingly essential in enterprises since it helps firms to get ideas from facts and automate company operations, lowering manual labor and expenses. Linguistic Detectors (the technique of determining the language of a given document), Sentiment Analysis (the process of identifying whether a text is favorable or unfavorable about a given subject), Topic Detection (determining the theme or topic of a group of texts), and so on are common applications of text classification in industry. The nature of the dataset is Multi-class and multi-hierarchical, which means that the hierarchies are in multiple levels, each level of hierarchy is multiple class in nature. One of ML’s most successful paradigms is supervised learning from which one can build a generalization model. Hence, a custom model is built, so that the model fits with the problem. Deep learning (DL), part of Artificial Intelligence (AI) , does functions that replicate the human brain's data processing capabilities in order to identify text or artifacts, translate languages, detect voice, draw conclusions and so on. Bidirectional Encoder Representations from Transformers (BERT), a Deep Learning Algorithm performs an extra-ordinary task in NLP text classification and results in high accuracy. Therefore, BERT is combined with the Custom Model developed and compared with the native algorithm to ensure the increase in accuracy rates.","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74154595","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

Fault diagnosis of SKF-6205 bearing with modified empirical mode decomposition 基于改进经验模态分解的SKF-6205轴承故障诊断

International journal of engineering science and technology Pub Date : 2022-05-30 DOI: 10.4314/ijest.v13i4.2

A. Darji, D. Pandya

{"title":"Fault diagnosis of SKF-6205 bearing with modified empirical mode decomposition","authors":"A. Darji, D. Pandya","doi":"10.4314/ijest.v13i4.2","DOIUrl":"https://doi.org/10.4314/ijest.v13i4.2","url":null,"abstract":"Rolling element bearings are broadly used in the rotating machines to support static and dynamic loads. In this research, the advance signal processing techniques are use for processing of bearing fault signals. Experimental validation with genuine vibration signals calculated from bearings with seeded defects on bearing elements. The model-based fault diagnosis method has attempted to diagnose incipient fault detection and classification of bearing with data driven approach. Feature extraction technique has been developed with hybrid signal processing technique based on the band pass filter nature of Empirical mode decomposition (EMD), the resonant frequency bands have owed in specific mono component signals called Intrinsic Mode Functions (IMFs). Synchronized resonant frequency band (SRFB) is obtained on based of orthogonal real wavelet using spectral kurtosis. Biorthogonal 5.5 wavelet, a real wavelet has been selected as a suitable wavelet for WPT based on “Maximum Relative Wavelet Energy” and “Maximum Energy-to-Shannon entropy ratio”. Three, Feature extraction techniques like continuous wavelet transform (CWT), wavelet packet transform (WPT) and modified Hilbert Huang Transforms (HHT) are compared on bases of their classification accuracy with different classification algorithm and filters. Various supervised classifiers have been compared through a common platform of Waikato Environment for Knowledge Analysis (WEKA) and concluded the k- nearest neighbour (KNN) as an effective available classifier for rolling element bearing. Further, asymmetric proximity function based KNN (APF-KNN) has out performs with modified feature selection criteria. Feature extraction through modified HHT and APFKNN has been future as a most effectual fault classification method. For testing any unknown data, simplified method has been demonstrated, which make the proposed data driven approach more realistic, faster and automated. ","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72795798","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

Mechanical properties of geopolymer concrete with varying cement content using flyash and ground granulated blast furnace slag 不同水泥掺量的粉煤灰和磨粒矿渣地聚合物混凝土的力学性能

International journal of engineering science and technology Pub Date : 2022-05-30 DOI: 10.4314/ijest.v13i4.7

P. Ashveenkumar, M. Preethi, P. Prashanth

{"title":"Mechanical properties of geopolymer concrete with varying cement content using flyash and ground granulated blast furnace slag","authors":"P. Ashveenkumar, M. Preethi, P. Prashanth","doi":"10.4314/ijest.v13i4.7","DOIUrl":"https://doi.org/10.4314/ijest.v13i4.7","url":null,"abstract":"In the recent past, the importance of geopolymer concrete as an eco-friendly product to replace portland cement concrete is continuously increasing over time. Yet less research effort has been invested in this area compared with some topical issues in civil engineering. Thus, the objective of this article is to analyse the mechanical properties of geopolymer concrete where the cement is replaced by fly ash and ground granulated blast-furnace slag (GGBS). Sodium silicate and sodium hydroxide 8 molarity solution was used. The compressive strength of a cube in an 8 molarity solution was measured for various mixtures (i.e. G50F50 where G and F stand for GGBS and flyash, respectively while the numerical value denotes the cement percentage) and the cement contents (i.e. 0, 10, 20, 30, 40%). The cube specimens are 100mmx100mmx100mm with the ambient curing at 35- 400C. In total, 9 cubes, 3 beams and 3 cylinders are cast at 7days, 14days and 28days while the compressive strengths of different mixes and cubes are calculated. For 28days, beams and cylinders are measured for flexural and tensile strength. The compressive strength at 7,14 and 28 days nearly doubled the target strength by using geopolymer concrete instead of normal concrete. Compressive strength is about 10% higher at 7 and 14days and 20% higher at 28days after replacing 40% of the cement. Flexural strength increased by 50% when 40% of the cement was replaced but split tensile strength only increased by 1%.","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78427654","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: 2

Basalt fiber and its composite manufacturing and applications: An overview 玄武岩纤维及其复合材料的制造与应用综述

International journal of engineering science and technology Pub Date : 2022-05-30 DOI: 10.4314/ijest.v13i4.6

A. R. Tavadi, Y. Naik, K. Kumaresan, N. I. Jamadar, C. Rajaravi

引用次数: 4

Heavy metals and essential elements in table salt extracted from Bahi wetlands in Central Tanzania 从坦桑尼亚中部Bahi湿地提取的食盐中的重金属和基本元素

International journal of engineering science and technology Pub Date : 2022-05-30 DOI: 10.4314/ijest.v13i4.3

I. Lugendo, John Bugumba

{"title":"Heavy metals and essential elements in table salt extracted from Bahi wetlands in Central Tanzania","authors":"I. Lugendo, John Bugumba","doi":"10.4314/ijest.v13i4.3","DOIUrl":"https://doi.org/10.4314/ijest.v13i4.3","url":null,"abstract":"Salt from Bahi wetlands is allegedly containing high concentrations of heavy metals since the wetlands are in the proximity of the prospective uranium mining sites. This means Bahi salt could be an important route through which salt consumers are exposed to high concentrations of heavy metals. This study has analysed 50 salt samples of Bahi salt in order to determine the concentrations of both heavy metals and essential elements using the Energy Dispersive X-Ray Fluorescence Spectrometry (EDXRF). Analytical results show that apart from Na and Cl, Bahi salt is composed of several elements including heavy metals such as Cr, Cd, Pb, Th and U. The salt also contains essential elements such as Mg, K, Ca, Mn, Fe, Co, Zn and Br. The mean concentrations of Cr, Cd, Pb, Th and U ranged from 20 - 25μg/g, 3.8 – 8.85 μg/g, 2.29 – 5.8 μg/g, 6.22 – 15.8 μg/g and 6.5 – 9.12 μg/g respectively. All these toxic elements were in higher concentrations than the recommended maximum tolerable limits (MTL). Meanwhile the daily intake rate of essential elements due consumption of Bahi salt leads to the hazard index (HI) greater than 1 for children. This implies that unless purified, Bahi salt may be unsafe for children. Thus, both salt producers and responsible authorities at Bahi wetlands should collaborate to introduce suitable production methods ensuring effective salt purification before it reaches its consumers.","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86664303","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

CFD analysis of the low Reynolds S1223 airfoil 低雷诺数S1223翼型的CFD分析

International journal of engineering science and technology Pub Date : 2022-05-30 DOI: 10.4314/ijest.v13i4.5

E. Mollica, A. Timmoneri

引用次数: 0

Effect of heat treatment and ageing on microstructure for hypoeutectic Al-7Si alloy and hybrid metal matrix composites 热处理和时效对亚共晶Al-7Si合金及混杂金属基复合材料组织的影响

International journal of engineering science and technology Pub Date : 2022-05-30 DOI: 10.4314/ijest.v13i4.1

B. Viswanatha, M. Prasanna Kumar, S. Basavarajappa, T. Kiran, S. Kanchiraya

{"title":"Effect of heat treatment and ageing on microstructure for hypoeutectic Al-7Si alloy and hybrid metal matrix composites","authors":"B. Viswanatha, M. Prasanna Kumar, S. Basavarajappa, T. Kiran, S. Kanchiraya","doi":"10.4314/ijest.v13i4.1","DOIUrl":"https://doi.org/10.4314/ijest.v13i4.1","url":null,"abstract":"In the present investigation on fabrication and microstructure of aluminium based hybrid composites. A356 based aluminium matrix material with varying reinforcement percentage from 0 to 9 wt. % in steps of 3 wt. % silicon carbide (SiCp) and fixed quantity of 3 wt. % of graphite (Gr) particles were used in fabrication. The specimens were fabricated by stir-cast method. Heat treatment was carried out for the cast specimen at 540oC for 12 hours and further ageing was carried out at 155ºC for 3, 6, 9 and 12 hours durations. The specimen after heat treatment and ageing were quenched in water at 60oC. The prepared specimens (ascast and aged) were examined using optical microscope to know the particle distribution in the matrix. Hardness and tensile were carried out for as-cast and aged specimen. The results were compared with as-cast and aged specimens. There was a significant improvement in hardness and tensile properties due to increase in the weight percentage of SiCp. The specimen A356-9SiCp-3Gr aged at 9 hrs showed improved hardness, and tensile when compared to other tested specimen. The presence of reinforcements (SiCp and Gr) significantly affects the solid state transition kinetics that improves the properties of composites. The presences of reinforcements in the specimens are evident from the electron dispersive spectroscopy (EDS) analysis. ","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78428471","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

ANALYSIS OF FLAME RETARDANT FOR COVER ELECTRICAL PLASTIC INJECTIONUSING MATERIAL POLYPROPYLENE 聚丙烯材料盖层电气塑料注射用阻燃性能分析

International journal of engineering science and technology Pub Date : 2022-03-31 DOI: 10.56127/ijst.v1i1.136

Muhammad Yusuf Nurfani

引用次数: 0