Javid Ali, Inayatur Rehman, Jehangir Shah, Javed Abbas Bangash, M. Ilyas
A comparative evaluation of tannins, flavonoid, phenol quantification and antioxidant potential of aqueous, methanol, n-hexane, acetone and chloroform extracts of Punica granatum leaves were determined. Quantification of phenolic was carried out by the technique of Folin-Ciocalteau, using rutin as standard flavonoids were evaluated through the technique of colorimetry, tannin was measured by the difference of total phenolics and free phenolics assay procedure. Antioxidant activities were evaluated by four standards antioxidant techniques including Superoxide dismutase (SOD)-like activity, Hydrogen Peroxide (H2O2) scavenging activity,1, 1’-diphynyl- 2-picrylhydrazyl (DPPH) activity and Nitric oxide (NO) scavenging activity method using ascorbic acid as standard. The antioxidant activities showed that methanol extract at 500μg/mL calculated maximum DPPH inhibition activity was 78±1%, H2O2 scavenging activity was 90±0%, SOD-like activity was 88±0% and NO scavenging activity was 90±0%. The outcomes indicated the major antioxidant actions were carried out by the extract of methanol; the entire potential was increased in the directive of methanol> chloroform> acetone>aqueous>n-hexane extracts. The results indicate that Punica granatum leaves extracts to have potent antioxidant activities that would have beneficial effects on human health and methanol extracts are superior with better antioxidant potential. The leaves extracts of Punica granatum could be of enormousattention in the enhancement of top value-added secondary products and the appliance of functional and green substitutes in thecosmetics, food and pharma industries.
{"title":"Comparative evaluation of in vitro antioxidant potential of Punica granatum L. leaves extracts","authors":"Javid Ali, Inayatur Rehman, Jehangir Shah, Javed Abbas Bangash, M. Ilyas","doi":"10.4314/ijest.v14i1.1","DOIUrl":"https://doi.org/10.4314/ijest.v14i1.1","url":null,"abstract":"A comparative evaluation of tannins, flavonoid, phenol quantification and antioxidant potential of aqueous, methanol, n-hexane, acetone and chloroform extracts of Punica granatum leaves were determined. Quantification of phenolic was carried out by the technique of Folin-Ciocalteau, using rutin as standard flavonoids were evaluated through the technique of colorimetry, tannin was measured by the difference of total phenolics and free phenolics assay procedure. Antioxidant activities were evaluated by four standards antioxidant techniques including Superoxide dismutase (SOD)-like activity, Hydrogen Peroxide (H2O2) scavenging activity,1, 1’-diphynyl- 2-picrylhydrazyl (DPPH) activity and Nitric oxide (NO) scavenging activity method using ascorbic acid as standard. The antioxidant activities showed that methanol extract at 500μg/mL calculated maximum DPPH inhibition activity was 78±1%, H2O2 scavenging activity was 90±0%, SOD-like activity was 88±0% and NO scavenging activity was 90±0%. The outcomes indicated the major antioxidant actions were carried out by the extract of methanol; the entire potential was increased in the directive of methanol> chloroform> acetone>aqueous>n-hexane extracts. The results indicate that Punica granatum leaves extracts to have potent antioxidant activities that would have beneficial effects on human health and methanol extracts are superior with better antioxidant potential. The leaves extracts of Punica granatum could be of enormousattention in the enhancement of top value-added secondary products and the appliance of functional and green substitutes in thecosmetics, food and pharma industries.","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73342245","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}
A zero-inflated Poisson (ZIP) distribution is commonly used for modelling zero-inflated process data with single type of defect, and for developing appropriate tools for instituting statistical process control of manufacturing processes. However, in reality, such manufacturing scenarios are very common where more than one type of defect can occur. For example, occurrences of defects like solder short circuits (shorts) and absence of solder (skips) are very common on printed circuit boards. In literature, different forms of bivariate zero-inflated Poisson (BZIP) distributions are proposed, which can be used for modelling the manufacturing scenarios where two types of defects can occur. Control charts are designed for monitoring for such processes using BZIP models. Although evaluation of capability is an integral part of statistical process control of a manufacturing process, researchers have given very little effort on this aspect of zero-inflated processes. Only a few articles attempted to evaluate the capability of a univariate zero-inflated process and no work is reported on evbaluating capability of a bivariate zero-inflated process. In this paper, a methodology for measuring capability of a bivariate zero-inflated process is presented. The proposed methodology is illustrated using two case studies.
{"title":"Evaluating capability of a bivariate zero-inflated poisson process","authors":"Surajit Pal, S. Gauri","doi":"10.4314/ijest.v14i1.2","DOIUrl":"https://doi.org/10.4314/ijest.v14i1.2","url":null,"abstract":"A zero-inflated Poisson (ZIP) distribution is commonly used for modelling zero-inflated process data with single type of defect, and for developing appropriate tools for instituting statistical process control of manufacturing processes. However, in reality, such manufacturing scenarios are very common where more than one type of defect can occur. For example, occurrences of defects like solder short circuits (shorts) and absence of solder (skips) are very common on printed circuit boards. In literature, different forms of bivariate zero-inflated Poisson (BZIP) distributions are proposed, which can be used for modelling the manufacturing scenarios where two types of defects can occur. Control charts are designed for monitoring for such processes using BZIP models. Although evaluation of capability is an integral part of statistical process control of a manufacturing process, researchers have given very little effort on this aspect of zero-inflated processes. Only a few articles attempted to evaluate the capability of a univariate zero-inflated process and no work is reported on evbaluating capability of a bivariate zero-inflated process. In this paper, a methodology for measuring capability of a bivariate zero-inflated process is presented. The proposed methodology is illustrated using two case studies.","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83202944","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}
Detecting and isolating faults on heavy duty vehicles is very important because it helps maintain high vehicle performance, low emissions, fuel economy, high vehicle safety and ensures repair and service efficiency. These factors are important because they help reduce the overall life cycle cost of a vehicle. The aim of this paper is to deliver a Web application model which aids the professional technician or vehicle user with basic automobile knowledge to access the working condition of the vehicles and detect the fault subsystem in the vehicles. The scope of this system is to visualize the data acquired from vehicle, diagnosis the fault component using trained fault model obtained from improvised Machine Learning (ML) classifiers and generate a report. The visualization page is built with plotly python package and prepared with selected parameter from On-board Diagnosis (OBD) tool data. The Histogram data is pre-processed with techniques such as null value Imputation techniques, Standardization and Balancing methods in order to increase the quality of training and it is trained with Classifiers. Finally, Classifier is tested and the Performance Metrics such as Accuracy, Precision, Re-call and F1 measure which are calculated from the Confusion Matrix. The proposed methodology for fault model prediction uses supervised algorithms such as Random Forest (RF), Ensemble Algorithm like AdaBoost Algorithm which offer reasonable Accuracy and Recall. The Python package joblib is used to save the model weights and reduce the computational time. Google Colabs is used as the python environment as it offers versatile features and PyCharm is utilised for the development of Web application. Hence, the Web application, outcome of this proposed work can, not only serve as the perfect companion to minimize the cost of time and money involved in unnecessary checks done for fault system detection but also aids to quickly detect and isolate the faulty system to avoid the propagation of errors that can lead to more dangerous cases.
检测和隔离重型车辆的故障是非常重要的，因为它有助于保持车辆的高性能，低排放，燃油经济性，车辆的高安全性，并确保维修和服务效率。这些因素很重要，因为它们有助于降低车辆的整体生命周期成本。本文的目的是提供一个Web应用模型，帮助具有基本汽车知识的专业技术人员或车辆用户访问车辆的工作状态并检测车辆的故障子系统。该系统的范围是将从车辆获取的数据可视化，使用临时机器学习(ML)分类器获得的训练故障模型诊断故障组件并生成报告。可视化页面使用plotly python包构建，并从车载诊断(OBD)工具数据中选择参数进行准备。为了提高训练质量，采用了null value Imputation技术、Standardization和Balancing方法对直方图数据进行预处理，并用分类器对直方图数据进行训练。最后，对分类器进行了测试，并从混淆矩阵中计算出准确率、精密度、召回率和F1测度等性能指标。提出的故障模型预测方法采用随机森林(Random Forest, RF)等监督算法和AdaBoost算法等集成算法，提供了合理的准确率和召回率。Python包joblib用于节省模型权重并减少计算时间。Google Colabs被用作python环境，因为它提供了多种功能，PyCharm被用于开发Web应用程序。因此，这个建议工作的Web应用程序的结果不仅可以作为完美的伴侣，最大限度地减少为故障系统检测所做的不必要检查所涉及的时间和金钱成本，而且还有助于快速检测和隔离故障系统，以避免可能导致更危险情况的错误传播。
{"title":"Design of software-oriented technician for vehicle’s fault system prediction using AdaBoost and random forest classifiers","authors":"M. Thomas, S. Sumathi","doi":"10.4314/ijest.v14i1.4","DOIUrl":"https://doi.org/10.4314/ijest.v14i1.4","url":null,"abstract":"Detecting and isolating faults on heavy duty vehicles is very important because it helps maintain high vehicle performance, low emissions, fuel economy, high vehicle safety and ensures repair and service efficiency. These factors are important because they help reduce the overall life cycle cost of a vehicle. The aim of this paper is to deliver a Web application model which aids the professional technician or vehicle user with basic automobile knowledge to access the working condition of the vehicles and detect the fault subsystem in the vehicles. The scope of this system is to visualize the data acquired from vehicle, diagnosis the fault component using trained fault model obtained from improvised Machine Learning (ML) classifiers and generate a report. The visualization page is built with plotly python package and prepared with selected parameter from On-board Diagnosis (OBD) tool data. The Histogram data is pre-processed with techniques such as null value Imputation techniques, Standardization and Balancing methods in order to increase the quality of training and it is trained with Classifiers. Finally, Classifier is tested and the Performance Metrics such as Accuracy, Precision, Re-call and F1 measure which are calculated from the Confusion Matrix. The proposed methodology for fault model prediction uses supervised algorithms such as Random Forest (RF), Ensemble Algorithm like AdaBoost Algorithm which offer reasonable Accuracy and Recall. The Python package joblib is used to save the model weights and reduce the computational time. Google Colabs is used as the python environment as it offers versatile features and PyCharm is utilised for the development of Web application. Hence, the Web application, outcome of this proposed work can, not only serve as the perfect companion to minimize the cost of time and money involved in unnecessary checks done for fault system detection but also aids to quickly detect and isolate the faulty system to avoid the propagation of errors that can lead to more dangerous cases.","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78676015","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}
The electric network circuits are designed by using the elements like resistor R, inductor L, and capacitor Ϲ. There are a number of techniques: exact, approximate, and purely numerical available for analyzing the R L Ϲ network circuits. Since the application of numerical method becomes more complex, computationally intensive, or needs complicated symbolic computations, there is a need to seek the help of integral transform methods for analyzing the RLϹ network circuits. Integral transform methods provide effective ways for solving a variety of problems arising in basic sciences and engineering. In thispaper, a new integral transform Rohit transform is discussed for obtaining the response of a series RLϹ electric network circuit connected to a steady voltage source, and a parallel R L Ϲ electric network circuit connected to a steady current source. The response of a series R L Ϲ network circuit connected to a steady voltage source via the application of Rohit transform will provide an expression for the electric current, and that of a parallel R L Ϲ network circuit connected to a steady current source will provide an expression for the voltage across the parallel RLϹ electric network circuit. The nature of the response of such series (or parallel) network circuits is determined by the values of R, L, and Ϲ of the electric network circuit. The Rohit transform will come out to be a powerful technique for analyzing such series or parallel electric network circuits with steady voltage or current sources.
{"title":"Response of RLC network circuit with steady source via rohit transform","authors":"Rohit Gupta, R. Gupta, D. Verma","doi":"10.4314/ijest.v14i1.3","DOIUrl":"https://doi.org/10.4314/ijest.v14i1.3","url":null,"abstract":"The electric network circuits are designed by using the elements like resistor R, inductor L, and capacitor Ϲ. There are a number of techniques: exact, approximate, and purely numerical available for analyzing the R L Ϲ network circuits. Since the application of numerical method becomes more complex, computationally intensive, or needs complicated symbolic computations, there is a need to seek the help of integral transform methods for analyzing the RLϹ network circuits. Integral transform methods provide effective ways for solving a variety of problems arising in basic sciences and engineering. In thispaper, a new integral transform Rohit transform is discussed for obtaining the response of a series RLϹ electric network circuit connected to a steady voltage source, and a parallel R L Ϲ electric network circuit connected to a steady current source. The response of a series R L Ϲ network circuit connected to a steady voltage source via the application of Rohit transform will provide an expression for the electric current, and that of a parallel R L Ϲ network circuit connected to a steady current source will provide an expression for the voltage across the parallel RLϹ electric network circuit. The nature of the response of such series (or parallel) network circuits is determined by the values of R, L, and Ϲ of the electric network circuit. The Rohit transform will come out to be a powerful technique for analyzing such series or parallel electric network circuits with steady voltage or current sources.","PeriodicalId":14145,"journal":{"name":"International journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77737310","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}
Solar panels are a tool that serves to convert sunlight into electrical voltage, sunlight itself contained energy in the form of photons. In this photon hit the surface of the electron solar cell panel that will be excited and cause electricity. This is known as the photoelectric principle. Every day the earth rotates on its axis while orbiting along the ellipse. Where along the plane of the earth's orbit is called the ecliptic plane so that it affects the geothermal received. So in this study analyzed the angle of the panel with the battery charging time needed on wood cutting equipment. From the results of testing and observation of the most effective tilt angle and with the highest power is an angle of 30°. Where the intensity of sunlight received by solar panels is very influential that determines the amount of electrical output or power generated by solar panels. Due to erratic weather and average power generated during 7 hours of measurement and observation produces 55.29 Watts then the power passed on the scc (controller) for the battery charging time for 7 hours then (7 hours × 55.29 Watt = 387.03 Watts / h) after being calculated to get a total load of 328.98 Wh and the length of battery charging time at full condition (full) is 1.64 Hours (h) with the slope angle sample taken is an angle of 30° with power highest.
{"title":"ANALYSIS OF TILT ANGLE AND BATTERY CHARGING TIME OF ELECTRICAL POWER REQUIREMENTS FOR WOOD CUTTING EQUIPMENT PURPOSES","authors":"RR. Sri Poernomo Sari, Sandy Suryady","doi":"10.56127/ijst.v1i2.124","DOIUrl":"https://doi.org/10.56127/ijst.v1i2.124","url":null,"abstract":"Solar panels are a tool that serves to convert sunlight into electrical voltage, sunlight itself contained energy in the form of photons. In this photon hit the surface of the electron solar cell panel that will be excited and cause electricity. This is known as the photoelectric principle. Every day the earth rotates on its axis while orbiting along the ellipse. Where along the plane of the earth's orbit is called the ecliptic plane so that it affects the geothermal received. So in this study analyzed the angle of the panel with the battery charging time needed on wood cutting equipment. From the results of testing and observation of the most effective tilt angle and with the highest power is an angle of 30°. Where the intensity of sunlight received by solar panels is very influential that determines the amount of electrical output or power generated by solar panels. Due to erratic weather and average power generated during 7 hours of measurement and observation produces 55.29 Watts then the power passed on the scc (controller) for the battery charging time for 7 hours then (7 hours × 55.29 Watt = 387.03 Watts / h) after being calculated to get a total load of 328.98 Wh and the length of battery charging time at full condition (full) is 1.64 Hours (h) with the slope angle sample taken is an angle of 30° with power highest.","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":"88085618","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}
Sekolah Master or Master’s Schools is one of the schools for Education for equality of students for the less fortunate. One of the obstacles that master schools have is the absence of technology in student enrollment in schools. Many students wish to enroll and continue Education in masters schools to get an equivalency Education, so as to have the recognition of such Educational status. So far, schools are still using conventional methods in registration. Where, students and parents or families must come to school to register students or students by bringing the required documents, not to mention the requirements that cannot be completed, even queue time is needed to be served by the operator or staff on duty at the school. This shows that a technological device or system is needed to facilitate student enrollment in schools. One method that can be used to collect the required requirements and make a design is the prototyping method. The prototyping method is one of the methods used as an effort to develop a system with almost finished services and products. This method produces an analysis of functional and non-functional requirements that form the basis of the system that can be developed. This research also produced a design with a navigation structure, use case diagrams with a unified modeling language, relation tables, and interface proposals from end users and admins. This interface is used as a basis for the system to be made as a user-approved interface, so that the development of this system can be carried out properly during implementation and future trials.
Sekolah Master或Master 's Schools是一所教育学校，旨在为不幸的学生提供平等的教育。硕士院校面临的障碍之一是在学生入学方面缺乏技术。许多学生希望进入硕士学校继续接受同等教育，以获得同等教育地位的认可。到目前为止，学校仍在使用传统的注册方法。凡学生及家长或家属必须携带所需的文件来学校注册学生或学生，更不用说无法完成的要求，甚至排队时间都需要由学校的操作员或值班人员来服务。这表明需要一种技术设备或系统来方便学生在学校入学。可以用来收集所需需求并进行设计的一种方法是原型方法。原型方法是用于开发具有几乎完成的服务和产品的系统的方法之一。该方法生成了功能需求和非功能需求的分析，这些需求构成了可开发系统的基础。这项研究还产生了一个带有导航结构的设计，带有统一建模语言的用例图，关系表，以及来自最终用户和管理员的接口建议。此界面将作为系统成为用户认可界面的基础，以便在实施和以后的试验中正确地进行系统的开发。
{"title":"USING PROTOTYPING METHOD FOR ANALYSIS AND DESIGN OF INFORMATION SYSTEMS FOR STUDENT REGISTRATION IN SEKOLAH MASTER","authors":"Lasminiasih, Guntur Eka Saputra, Rooswhan Budhi Utomo, Elbi Wiseno","doi":"10.56127/ijst.v1i2.140","DOIUrl":"https://doi.org/10.56127/ijst.v1i2.140","url":null,"abstract":"Sekolah Master or Master’s Schools is one of the schools for Education for equality of students for the less fortunate. One of the obstacles that master schools have is the absence of technology in student enrollment in schools. Many students wish to enroll and continue Education in masters schools to get an equivalency Education, so as to have the recognition of such Educational status. So far, schools are still using conventional methods in registration. Where, students and parents or families must come to school to register students or students by bringing the required documents, not to mention the requirements that cannot be completed, even queue time is needed to be served by the operator or staff on duty at the school. This shows that a technological device or system is needed to facilitate student enrollment in schools. One method that can be used to collect the required requirements and make a design is the prototyping method. The prototyping method is one of the methods used as an effort to develop a system with almost finished services and products. This method produces an analysis of functional and non-functional requirements that form the basis of the system that can be developed. This research also produced a design with a navigation structure, use case diagrams with a unified modeling language, relation tables, and interface proposals from end users and admins. This interface is used as a basis for the system to be made as a user-approved interface, so that the development of this system can be carried out properly during implementation and future trials.","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":"81231543","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}
Guntur Eka Saputra, Rakhmi Khalida, Ratu Nurmalika
Usability is a measurement of software applications to determine how easy the software is. Usability testing is done by involving end users or it can also involve experts. User Experience Questionnaire (UEQ) and System Usability Scale (SUS) are two approaches that can be used to measure Usability. Based on the provisions for determining the results of the SUS assessment, the percentile rank score, which is seventy-five, the results of the respondents' assessment on the TLX Training Gate application, the user acceptance level is in the acceptable category, the scale grade level is in category C, and the rating adjective is in the good category and with UEQ approach There are 3 (three) scales in the Above Average range and 2 (two) scales still below average, and 1 on the good scale. The result of the stimulation score (1,35) and attractiveness (1,27) because this system is attractive and comfortable for students so that the value of this aspect has a positive impression. Based on research, for 6 (six) aspects this shows that system development is needed so that students as users can maximize their learning potential in competitive programming learning
{"title":"EVALUATION OF USER EXPERIENCE TLX TRAINING GATE FOR COMPETITIVE PROGRAMMING LEARNING USING USER EXPERIENCE QUESTIONNAIRE AND SYSTEM USABILITY SCALE","authors":"Guntur Eka Saputra, Rakhmi Khalida, Ratu Nurmalika","doi":"10.56127/ijst.v1i2.142","DOIUrl":"https://doi.org/10.56127/ijst.v1i2.142","url":null,"abstract":"Usability is a measurement of software applications to determine how easy the software is. Usability testing is done by involving end users or it can also involve experts. User Experience Questionnaire (UEQ) and System Usability Scale (SUS) are two approaches that can be used to measure Usability. Based on the provisions for determining the results of the SUS assessment, the percentile rank score, which is seventy-five, the results of the respondents' assessment on the TLX Training Gate application, the user acceptance level is in the acceptable category, the scale grade level is in category C, and the rating adjective is in the good category and with UEQ approach There are 3 (three) scales in the Above Average range and 2 (two) scales still below average, and 1 on the good scale. The result of the stimulation score (1,35) and attractiveness (1,27) because this system is attractive and comfortable for students so that the value of this aspect has a positive impression. Based on research, for 6 (six) aspects this shows that system development is needed so that students as users can maximize their learning potential in competitive programming learning","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":"79562543","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}
Eko Susetyo Yulianto, Muhammad Aulia Febriandio Haadin
A heat exchanger is a device used to exchange heat and can usually function as a heater or a cooler. There are many types of heat exchangers available today. But the most widely used in industry is the shell and tube type heat exchanger. The shell and tube type heat exchanger has the advantages of being affordable, easy to maintain and has excellent heat transfer performance with a small volume. This paper aims to analyze the effect of mass flow rate on cold water inflow and hot water outlet temperature using water fluid in shell and tube heat exchanger. The design analysis that I did using the Solidworks 2019 software. This study only made a comparison by changing the mass flow velocity at the inflow of cold water with samples of 5 Kg/s, 10 Kg/s, 15 Kg/s, 20 Kg/s, 25 Kg/ s and 30 Kg/s and only sampled the hot water outlet temperature. The material used is stainless steel 321 on the shell and copper on the tube. The test results show that every increase of a multiple of 5 Kg/s there is a decrease in the average fluid temperature of 1.62 ℃ and the lowest temperature that can be achieved in this test is 52.33 ℃
{"title":"ANALYSIS OF MASS FLOW RATE IN COLD WATER INTO FLOW WITH HOT WATER OUTPUT TEMPERATURE IN SHELL AND TUBE HEAT EXCHANGER","authors":"Eko Susetyo Yulianto, Muhammad Aulia Febriandio Haadin","doi":"10.56127/ijst.v1i2.135","DOIUrl":"https://doi.org/10.56127/ijst.v1i2.135","url":null,"abstract":"A heat exchanger is a device used to exchange heat and can usually function as a heater or a cooler. There are many types of heat exchangers available today. But the most widely used in industry is the shell and tube type heat exchanger. The shell and tube type heat exchanger has the advantages of being affordable, easy to maintain and has excellent heat transfer performance with a small volume. This paper aims to analyze the effect of mass flow rate on cold water inflow and hot water outlet temperature using water fluid in shell and tube heat exchanger. The design analysis that I did using the Solidworks 2019 software. This study only made a comparison by changing the mass flow velocity at the inflow of cold water with samples of 5 Kg/s, 10 Kg/s, 15 Kg/s, 20 Kg/s, 25 Kg/ s and 30 Kg/s and only sampled the hot water outlet temperature. The material used is stainless steel 321 on the shell and copper on the tube. The test results show that every increase of a multiple of 5 Kg/s there is a decrease in the average fluid temperature of 1.62 ℃ and the lowest temperature that can be achieved in this test is 52.33 ℃","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":"77045505","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}
Scuba mask is a type mask which made from a tight and elastic type of fabric that provides comfort when used. PT. Cahaya Digital Printing is one of companies engaged in digital printing that produces masks which are currently used by the public. The purpose of this study was to analyze production process of scuba masks from raw materials to mask products. The scuba mask production process uses scuba cloth as raw material which though a printing process on a digital printing machine which has a print area of up to 1.5 m with a print speed of up to 15 m2 per hour to print according design to customer requirement, manual press process to cut the mask to size and scuba printing and sewing and overlay processes using a sewing machine that has a stitch length of 0-5 mm and a sewing speed of up to 4500 s.p.m to sew the edges of the mask to make look neat and not stringy.
水肺面罩是一种由紧绷和弹性类型的织物制成的面罩，使用时提供舒适。PT. Cahaya Digital Printing是一家从事数字印刷的公司，生产的口罩目前被公众使用。本研究的目的是分析水肺面罩从原料到产品的生产过程。水肺面罩生产工艺以水肺布为原料，在印刷面积高达1.5米，印刷速度高达每小时15平方米的数码印刷机上进行印刷，根据客户要求进行设计印刷。手动按压过程，将口罩切割到合适的尺寸，使用缝纫机进行水肺印刷和缝纫以及覆盖过程，缝纫机的缝线长度为0-5毫米，缝纫速度高达4500 S.P.M，以缝制口罩的边缘，使其看起来整洁而不粗糙。
{"title":"PRODUCTION MASK SCUBA TYPE ON UMKM CAHAYA PRINTING","authors":"Yuyun Yuniar Rohmatin","doi":"10.56127/ijst.v1i2.141","DOIUrl":"https://doi.org/10.56127/ijst.v1i2.141","url":null,"abstract":"Scuba mask is a type mask which made from a tight and elastic type of fabric that provides comfort when used. PT. Cahaya Digital Printing is one of companies engaged in digital printing that produces masks which are currently used by the public. The purpose of this study was to analyze production process of scuba masks from raw materials to mask products. The scuba mask production process uses scuba cloth as raw material which though a printing process on a digital printing machine which has a print area of up to 1.5 m with a print speed of up to 15 m2 per hour to print according design to customer requirement, manual press process to cut the mask to size and scuba printing and sewing and overlay processes using a sewing machine that has a stitch length of 0-5 mm and a sewing speed of up to 4500 s.p.m to sew the edges of the mask to make look neat and not stringy.","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":"74905854","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}
Hari Setiabudi Husni, Arief Ramadhan, Edi Abdurachman, Agung Trisetyarso
This paper explores the possibility of combining process model of Digital Government auditing, Rule Based and Cloud Case-Based Reasoning. Digital Government and Digital Government Auditing definition retrieve from Indonesia Presidential Regulation number 95-year 2018. consist two goals that the regulation aims, the first was to realize good governance clean, effective, transparent, and accountable as well as quality and reliable public services an digital government system is required; and second was to improve cohesiveness and efficiency of the electronic-based government system governance and management required national digital government; The existence variation of regulations and auditing standard creating complex reference database and hard to find solution for assessment and auditing Indonesia Digital Government. Rule-based and Case-based reasoning could help auditor in searching and documenting unsolved and solved auditing problem. The result shown that there is possibility to enhance audit process to create better audit result and more efficient in audit working time.
{"title":"INDONESIA DIGITAL GOVERNMENT AUDITING MODEL USING RULE BASED AND CLOUD CASE-BASED REASONING","authors":"Hari Setiabudi Husni, Arief Ramadhan, Edi Abdurachman, Agung Trisetyarso","doi":"10.56127/ijst.v1i2.147","DOIUrl":"https://doi.org/10.56127/ijst.v1i2.147","url":null,"abstract":"This paper explores the possibility of combining process model of Digital Government auditing, Rule Based and Cloud Case-Based Reasoning. Digital Government and Digital Government Auditing definition retrieve from Indonesia Presidential Regulation number 95-year 2018. consist two goals that the regulation aims, the first was to realize good governance clean, effective, transparent, and accountable as well as quality and reliable public services an digital government system is required; and second was to improve cohesiveness and efficiency of the electronic-based government system governance and management required national digital government; The existence variation of regulations and auditing standard creating complex reference database and hard to find solution for assessment and auditing Indonesia Digital Government. Rule-based and Case-based reasoning could help auditor in searching and documenting unsolved and solved auditing problem. The result shown that there is possibility to enhance audit process to create better audit result and more efficient in audit working time.","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":"90816270","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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