International journal of engineering science and technology最新文献_第9页

Comparative evaluation of in vitro antioxidant potential of Punica granatum L. leaves extracts 石榴叶提取物体外抗氧化能力的比较评价

International journal of engineering science and technology Pub Date : 2022-08-08 DOI: 10.4314/ijest.v14i1.1

Javid Ali, Inayatur Rehman, Jehangir Shah, Javed Abbas Bangash, M. Ilyas

{"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}

引用次数: 1

Evaluating capability of a bivariate zero-inflated poisson process 二元零膨胀泊松过程的评价能力

International journal of engineering science and technology Pub Date : 2022-08-08 DOI: 10.4314/ijest.v14i1.2

Surajit Pal, S. Gauri

{"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}

引用次数: 0

Design of software-oriented technician for vehicle’s fault system prediction using AdaBoost and random forest classifiers 基于AdaBoost和随机森林分类器的汽车故障系统预测软件设计

International journal of engineering science and technology Pub Date : 2022-08-08 DOI: 10.4314/ijest.v14i1.4

M. Thomas, S. Sumathi

{"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}

引用次数: 1

Response of RLC network circuit with steady source via rohit transform 稳定源RLC网络电路的罗希特变换响应

International journal of engineering science and technology Pub Date : 2022-08-08 DOI: 10.4314/ijest.v14i1.3

Rohit Gupta, R. Gupta, D. Verma

{"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}

引用次数: 0

ANALYSIS OF TILT ANGLE AND BATTERY CHARGING TIME OF ELECTRICAL POWER REQUIREMENTS FOR WOOD CUTTING EQUIPMENT PURPOSES 木材切割设备用电要求的倾斜角度和电池充电时间分析

International journal of engineering science and technology Pub Date : 2022-07-19 DOI: 10.56127/ijst.v1i2.124

RR. Sri Poernomo Sari, Sandy Suryady

{"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}

引用次数: 1

USING PROTOTYPING METHOD FOR ANALYSIS AND DESIGN OF INFORMATION SYSTEMS FOR STUDENT REGISTRATION IN SEKOLAH MASTER 采用原型法对赛科拉硕士学生注册信息系统进行分析和设计

International journal of engineering science and technology Pub Date : 2022-07-19 DOI: 10.56127/ijst.v1i2.140

Lasminiasih, Guntur Eka Saputra, Rooswhan Budhi Utomo, Elbi Wiseno

{"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}

引用次数: 1

EVALUATION OF USER EXPERIENCE TLX TRAINING GATE FOR COMPETITIVE PROGRAMMING LEARNING USING USER EXPERIENCE QUESTIONNAIRE AND SYSTEM USABILITY SCALE 使用用户体验问卷和系统可用性量表评估竞争性编程学习的用户体验TLX训练门

International journal of engineering science and technology Pub Date : 2022-07-19 DOI: 10.56127/ijst.v1i2.142

Guntur Eka Saputra, Rakhmi Khalida, Ratu Nurmalika

{"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}

引用次数: 2

ANALYSIS OF MASS FLOW RATE IN COLD WATER INTO FLOW WITH HOT WATER OUTPUT TEMPERATURE IN SHELL AND TUBE HEAT EXCHANGER 管壳式换热器中随热水输出温度变化的冷水进流质量流量分析

International journal of engineering science and technology Pub Date : 2022-07-19 DOI: 10.56127/ijst.v1i2.135

Eko Susetyo Yulianto, Muhammad Aulia Febriandio Haadin

{"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}

引用次数: 0

PRODUCTION MASK SCUBA TYPE ON UMKM CAHAYA PRINTING 生产潜水式口罩上umkm卡哈亚印刷

International journal of engineering science and technology Pub Date : 2022-07-19 DOI: 10.56127/ijst.v1i2.141

Yuyun Yuniar Rohmatin

引用次数: 0

INDONESIA DIGITAL GOVERNMENT AUDITING MODEL USING RULE BASED AND CLOUD CASE-BASED REASONING 使用基于规则和基于云案例推理的印度尼西亚数字政府审计模型

International journal of engineering science and technology Pub Date : 2022-07-19 DOI: 10.56127/ijst.v1i2.147

Hari Setiabudi Husni, Arief Ramadhan, Edi Abdurachman, Agung Trisetyarso

{"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}

引用次数: 2