International Journal Science and Technology (IJST)
International Journal Science and Technology (IJST) is a scientific journal that presents original articles about research knowledge and information or the latest research and development applications in the field of technology. The scope of the IJST Journal covers the fields of Informatics, Mechanical Engineering, Electrical Engineering, Information Systems and Industrial Engineering. This journal is a means of publication and a place to share research and development work in the field of technology.
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<![CDATA[ANALYSIS OF FLAME RETARDANT POLYPROPYLENE FOR PLASTIC INJECTION MOLDING USING BROMINATED AROMATIC COMPOUND ]]>
<![CDATA[Muhammad Yusuf Nurfani]]>;
<![CDATA[Dwi Arif Santoso]]>
<![CDATA[ International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology ]]>
Publisher : <![CDATA[Asosiasi Dosen Muda Indonesia ]]>
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DOI: 10.56127/ijst.v1i2.97
<![CDATA[Flame Retardant (FR) is a type of thermoplastic material that is resistant to fire. Application of FR on various types of plastic resins such as polypropylene (PP), Acrylonitrile butadiene styrene (ABS), and other types of plastic resins. This study discusses the analysis of Brominated Aromatic Compound as a mixture of Polypropylene to produce PP-FR types for plastic injection molding with the material formulation method to perform a flame retardant test on the results of the specimens that have been made. This study shows that PP material and Acrylonitrile butadiene styrene can bind scanning microscopes with ×15,000 and ×30,000 zoom. The extrusion process results did not experience cracks after going through a chamber test of -5 ◦C to 70 ◦C for 120 hours on the specimen. In addition, the results of the flame retardant test fire can die in under 2 seconds]]>
<![CDATA[ANALYSIS OF TILT ANGLE AND BATTERY CHARGING TIME OF ELECTRICAL POWER REQUIREMENTS FOR WOOD CUTTING EQUIPMENT PURPOSES ]]>
<![CDATA[Sandy Suryady]]>;
<![CDATA[RR. Sri Poernomo Sari]]>
<![CDATA[ International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology ]]>
Publisher : <![CDATA[Asosiasi Dosen Muda Indonesia ]]>
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DOI: 10.56127/ijst.v1i2.124
<![CDATA[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.]]>
<![CDATA[ANALYSIS OF MASS FLOW RATE IN COLD WATER INTO FLOW WITH HOT WATER OUTPUT TEMPERATURE IN SHELL AND TUBE HEAT EXCHANGER ]]>
<![CDATA[Eko Susetyo Yulianto]]>;
<![CDATA[Muhammad Aulia Febriandio Haadin]]>
<![CDATA[ International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology ]]>
Publisher : <![CDATA[Asosiasi Dosen Muda Indonesia ]]>
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DOI: 10.56127/ijst.v1i2.135
<![CDATA[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 ℃]]>
<![CDATA[USING PROTOTYPING METHOD FOR ANALYSIS AND DESIGN OF INFORMATION SYSTEMS FOR STUDENT REGISTRATION IN SEKOLAH MASTER ]]>
<![CDATA[Lasminiasih Lasminiasih]]>;
<![CDATA[Guntur Eka Saputra]]>;
<![CDATA[Rooswhan Budhi Utomo]]>;
<![CDATA[Elbi Wiseno]]>
<![CDATA[ International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology ]]>
Publisher : <![CDATA[Asosiasi Dosen Muda Indonesia ]]>
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DOI: 10.56127/ijst.v1i2.140
<![CDATA[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.]]>
<![CDATA[PRODUCTION MASK SCUBA TYPE ON UMKM CAHAYA PRINTING ]]>
<![CDATA[Yuyun Yuniar Rohmatin]]>
<![CDATA[ International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology ]]>
Publisher : <![CDATA[Asosiasi Dosen Muda Indonesia ]]>
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DOI: 10.56127/ijst.v1i2.141
<![CDATA[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.]]>
<![CDATA[EVALUATION OF USER EXPERIENCE TLX TRAINING GATE FOR COMPETITIVE PROGRAMMING LEARNING USING USER EXPERIENCE QUESTIONNAIRE AND SYSTEM USABILITY SCALE ]]>
<![CDATA[Guntur Eka Saputra]]>;
<![CDATA[Rakhmi Khalida]]>;
<![CDATA[Ratu Nurmalika]]>
<![CDATA[ International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology ]]>
Publisher : <![CDATA[Asosiasi Dosen Muda Indonesia ]]>
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DOI: 10.56127/ijst.v1i2.142
<![CDATA[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]]>
<![CDATA[DIGITAL TWIN CONCEPT FOR INDONESIA DIGITAL GOVERNMENT INFORMATION TECHNOLOGY GOVERNANCE ]]>
<![CDATA[Hari Setiabudi Husni]]>;
<![CDATA[Ford Lumban Gaol]]>;
<![CDATA[Suhono Harso Supangkat]]>;
<![CDATA[Benny Ranti]]>
<![CDATA[ International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology ]]>
Publisher : <![CDATA[Asosiasi Dosen Muda Indonesia ]]>
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DOI: 10.56127/ijst.v1i2.146
<![CDATA[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.]]>
<![CDATA[INDONESIA DIGITAL GOVERNMENT AUDITING MODEL USING RULE BASED AND CLOUD CASE-BASED REASONING ]]>
<![CDATA[Hari Setiabudi Husni]]>;
<![CDATA[Arief Ramadhan]]>;
<![CDATA[Edi Abdurachman]]>;
<![CDATA[Agung Trisetyarso]]>
<![CDATA[ International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology ]]>
Publisher : <![CDATA[Asosiasi Dosen Muda Indonesia ]]>
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DOI: 10.56127/ijst.v1i2.147
<![CDATA[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.]]>
<![CDATA[ANALYSIS OF THE EFFECT OF WEBSITE SERVICE QUALITY AND TRUST ON USER SATISFACTION WITH WEBQUAL METHOD IN E-COMMERCE INDONESIA ]]>
<![CDATA[Tubagus Achmadi]]>;
<![CDATA[Miftah Andriansyah]]>
<![CDATA[ International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology ]]>
Publisher : <![CDATA[Asosiasi Dosen Muda Indonesia ]]>
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DOI: 10.56127/ijst.v1i2.220
<![CDATA[This study aims to analyze the quality of the Shopee and Lazada Indonesia websites which have been measured using the Webqual method. To find out in the midst of the COVID-19 outbreak like this, whether many 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 sample used is people from any circle who have made purchases at Shopee or Lazada at least 1 time as many as 100 respondents. The data collection instrument used primary data. Primary data was obtained by using a questionnaire 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 the help of SPSS version 22. By showing the Asymp value. Sig (2-tailed) shows 0.200. Because the value of Asymp. Sig (2-tailed) > 0.050 this means that the residual data is normally distributed so that the data can be accepted. The VIF value of X1 and X2 is less than 10 and the tolerance value is more than 0.10. So, it can be concluded that in the regression model there is no multicollinearity. The scatterplot graph shows that the points 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, are considered constant. H1 is accepted, namely the quality of the website has a significant positive effect on user satisfaction, this can be seen in the significance value of 0.003 or p value <0.05. ]]>
