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2nd International Conference on Technology and Policy in Electric Power and Energy, ICT-PEP 2020

作者： Kennedy, Andrey Facta, Mochammad Hermawan Diponegoro University Magister Study Program of Electrical Engineering Semarang Indonesia Indonesia Diponegoro University Faculty of Engineering Department of Electrical Engineering Semarang Indonesia

ISBN: (数字)9781728188355

ISBN: (纸本)9781728188355

Reliability, and continuity of service to customers is the top priority in the power system defense scheme. One important criterion is avoiding instability. Most conventional stability analysis is related to power swings due to frequency variations because the frequency is directly affected by power plant performance. However, in the transmission line, voltage instability is crucial because it practically give direct impact on customers. Especially for high voltage consumers, poor voltage quality is very influential on the performance of industrial equipment such as electric motors, textile machinery, and other electronic equipment, so the voltage quality must be maintained to avoid complaints from these consumers. The merge of frequency and voltage criteria instability is becoming the main focus in recent studies. In a large power system, voltage stability problem usually happens due to excess of electrical demand and deficiency of power generation. To avoid voltage instability, under-voltage load shedding can be an option to remove buses with unstable voltage in the power system. This paper focuses on the Paiton-Situbondo 150 kV transmission lines as the backbone of the power transfer from Java to Bali to investigating the role and effectiveness of the combination of frequency and voltage threshold to maintain the system stability when the faults occur on the transmission lines. © 2020 IEEE.

关键词： Electric lines

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Development of an Automatic Anti Pitching System (APS) Autonomous Surface Vehicle (ASV) for Fish Mapping 3

Development of an Automatic Anti Pitching System (APS) Auton...

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3rd International Conference on Science and Technology 2019, ICST 2019

作者： Saputra, Noverdo Lukmana, Muhammad Arifudin Suranto, Purwo Joko Study Program Naval Architecture Universitas Pembangunan Nasional Veteran Jakarta Indonesia Study Program Mechanical Engineering Universitas Pembangunan Nasional Veteran Jakarta Indonesia

The common problem occurs in fish mapping using autonomous surface vehicles (ASV) is pitching stability. Some researchers have indicated that problem affects the results of mapping. The target of this system is to design an Autonomous Pitching System (APS) for ASV using numerical simulation software. The simulation is done by implement APS into the system, producing an oscillatory motion from the ASV. For both dynamics of craft in short and long periods, APS with proportional controller (P), proportional-integral controller (PI), and proportional-integral-derivative controller (PID) are developed in order to minimize the oscillatory behaviour. It was found that for the short period dynamics, the APS with PI controller was the optimal controller, followed by the PID controller and then the P controller. For the long period dynamics, the APS with PID controller was optimal. © 2020 IOP Publishing Ltd. All rights reserved.

关键词： Three term control systems

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Real Market Basket Analysis using Apriori and Frequent Pattern Tree Algorithm

Real Market Basket Analysis using Apriori and Frequent Patte...

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2021 International Conference on Computer, Control, Informatics and Its Applications - Learning Experience: Raising and Leveraging the Digital Technologies During the COVID-19 Pandemic, IC3INA

作者： Christian, Michael Albert Nathanael, Nathanael Mauliani, Annisa Indrawati, Ariani Manik, Lindung Parningotan Akbar, Zaenal Informatics Engineering Program Study Kwik Kian Gie School of Business Jakarta Indonesia Research Center for Informatics National Research and Innovation Agency Bandung Indonesia

ISBN: (纸本)9781450385244

Recently, data mining has been implemented in various fields, including business and telecommunications. Data mining is a technique for extracting and detecting patterns in massive data sets that combines machine learning, statistics, and database systems. One of the most important use-cases in data mining is finding the high-frequency patterns between the set of itemset called association rules. Association rule mining is a well-researched technique for finding some relations between variables in large databases. This paper aims to measure the performance of the Apriori and Frequent Pattern Tree algorithms by comparing them using several points of comparison. Then we compared the outputs, whether they produce the same or different rules, to find out whether the way the two algorithms work is similar or not. After that, we looked for the itemsets that best match the reality in the market by giving them to a user who had transaction data from his spare parts shop. © 2021 ACM.

关键词： Association rules

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The effect of lard concentration and ozonation on changes in polarization angle of olive oil 10

The effect of lard concentration and ozonation on changes in...

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10th International Seminar on New Paradigm and Innovation of Natural Sciences and itsApplication, ISNPINSA 2020

作者： Saputra, F.A. Azam, M. Arianto, F. Sofjan, K.F. Sugito, H. Alkian, I. Department of Physics Faculty of Science and Mathematics Diponegoro University Semarang50275 Indonesia Study Program of Automation Engineering Technology Vocational School Diponegoro University Indonesia

This research aims to analyze the effect of ozone exposure time and lard mixture on the polarization angle of transmission of olive oil. The study uses a transmission polarization method with a laser (λ = 532 nm) as a light source. The research sample in the form of olive oil mixed with lard at a concentration of 10, 20, 40, and 80%, with an ozone exposure time of 0-30 minutes. The sample is subjected to external electric fields with variations from 0-4.5 x 102 kV/m to increase the change's polarization angle. The results showed that the change in polarization angle would change linearly with the increase in lard concentration with olive oil. Olive oil with a low concentration of lard (10%) experienced an increase in the change in polarization angle with a value of 0.31 due to the effect of 90 minutes of ozone exposure. In general, the results of the study showed that increased concentrations of lard, ozone exposure time, electric field strengths caused an increase in changes in the polarization angle in a mixture of olive oil and lard. © Published under licence by IOP Publishing Ltd.

关键词： Mixtures

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The development of interactive android-based learning multimedia on the beef and its processing results course 2

The development of interactive android-based learning multim...

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2nd International Conference on Vocational Education of Mechanical and Automotive Technology, ICoVEMAT 2019

作者： Ayuningtyas, F.B. Rinawati, W. Culinary Engineering Education Study Program Universitas Negeri Yogyakarta Indonesia

This study aimed to develop interactive multimedia based on android on the course of beef and its processing results and to know its feasibility based on the material experts, the media experts, the teachers, and the students. This research can be categorized as Research and Development (R&D) with ADDIE model, namely Analysis, Design, Development, Implementation, and Evaluation. This study only covers the implementation stage. The results of the study showed that the development of multimedia includes analyzing students' needs, designing multimedia products, making multimedia products with Adobe Flash CS6 software and validating with experts, testing the multimedia products to 24 students. The validation results revealed that the development of multimedia in the small-scale test in the case of the linguistic aspect was 83.38%, the presentation aspect was 82.25%, the interactive learning aspect was 86%, and the overall viewing aspect was 80%, respectively. These results indicate that these android-based interactive learning multimedia is very suitable to be used as a learning media for Food Material Knowledge with the Basic Competence of Analyzing Food Materials from beef and its procession results. © 2020 Published under licence by IOP Publishing Ltd.

关键词： Students

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Development of tutorial video learning media on engine management system diagnosis 3

Development of tutorial video learning media on engine manag...

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3rd International Conference on Vocational Education of Mechanical and Automotive Technology, ICoVEMAT 2020

作者： Agama, A.A. Solikin, M. Automotive Engineering Education Study Program Universitas Negeri Yogyakarta Indonesia

Students readiness before participate in the practice activity need to be well prepared through a tutorial video for practicing. Therefore, this study aimed to (1) develop the Learning Media Video Tutorials for Engine Management System (EMS) practices in the Automotive engineering class, and (2) Identify the feasibility of the learning media developed. A research and development approach was implemented. There were two experts analized the product. The results showed that (1) the product is a tutorial video on a vehicle's EMS diagnosis using a scanner, (2) the utorial video is an .MP4 form with a file size of 2552 MB, which can be played through smartphones or computers, (3) the contents of the tutorial video is consisting introduction, DTC Function, Current Data Function, and Oscillsocope Function, (4) experts validity revealed that the tutorial video for diagnosing EMS on a vehicle is good and feasible to be implemented in the classroom activities. A further study to identify the effect of the tutorial video on the student's achievement is suggested. © 2020 Institute of Physics Publishing. All rights reserved.

关键词： Engines

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study of labor cost escalation in delay projects 1

Study of labor cost escalation in delay projects

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1st International Conference on Innovation in Research, ICIIR 2018

作者： Natawidjana, R. Nurasiyah, S. Civil Engineering Study Program Universitas Pendidikan Indonesia Bandung Indonesia

Timeliness of implementation is one of the variables in the implementation of construction projects. Evaluation and acceleration of delays projects will generally affect the use of project resources. Project delays can be overcome by making efforts, among others, with the Crashing Method which will affect various alternative costs resulting from Crashing. This study aims to understand that the delay in the construction project schedule will have an impact on the new schedule and the impact of costs that occur due to the acceleration carried out so that the project life is in accordance with the plan. Furthermore, it was analyzed for the need for additional workforce groups or only to maintain the addition of overtime. This research was conducted with descriptive analytic method, which is a research that will explain the conditions in the field in detail about project schedule delays by analyzing the magnitude of escalation of labor costs due to the acceleration of the duration of each activity so that the project schedule returns to the plan age. © 2020 Published under licence by IOP Publishing Ltd.

关键词： Wages

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Megaproject Complexity: Conceptual study from Complexity Theory 6

Megaproject Complexity: Conceptual Study from Complexity The...

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6th IEEE International Conference on engineering, Technologies and Applied Sciences, ICETAS 2019

作者： Damayanti, Retno Wulan Hartono, Budi Wijaya, Andi Rahadiyan Industrial Engineering Study Program Universitas Sebelas Maret Surakarta Indonesia

ISBN: (纸本)9781728140827

Many megaprojects in the world fail. The complexity is considered as one of the causes of megaproject failure. However, the complexity concept in megaproject is still not been clear yet. This study is clarifying and providing an overview of how to overcome the complexity in megaproject context from the complexity theory perspective. The qualitative study approach based on literature exploration succeeds in expanding the complexity theory in organizational and project into the megaproject context. The complexity is a matter related to the relationship of activities, processes, and entities with varying levels of linearity and uncertainty. The megaproject complexity system consists of complicated, complex, chaotic, or even all three conditions occurred. In order to overcome the complexity, the megaproject management need be adjusted under its condition. © 2019 IEEE.

关键词： Computational complexity

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Mapping and Visualization of Artificial Intelligence for Digital Economy Research: A Bibliometric Approach 4

Mapping and Visualization of Artificial Intelligence for Dig...

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4th IEEE International Conference of Computer Science and Information Technology, ICOSNIKOM 2022

作者： Maulana, Fairuz Iqbal Purnomo, Agung Pramono, Andi Arifin, Mohammad Nazir School of Computer Science Bina Nusantara University Computer Science Department Jakarta11480 Indonesia Binus Business School Undergraduate Program Bina Nusantara University Entrepreneurship Department Jakarta11480 Indonesia School of Design Bina Nusantara University Interior Design Department Jakarta11480 Indonesia Informatics Engineering Study Program University of Madura Pamekasan Indonesia

ISBN: (纸本)9798350399073

Artificial Intelligence (AI) seems to be a disruptive technology that defines and reshapes the economy, more efficient industrial processes, new business models, and the service sector, becoming the development of different practices than before. The literature shows that it will be included in all fields and people's lives, as is the case in the digital economy. Artificial Intelligence for Digital Economy has not been studied significantly. This study uses bibliometric analysis to graphically map scientific publications and research trends in the Artificial Intelligence for Digital Economy sector around the world in the last ten years. The Scopus database was used to collect metadata information for this study, and VOSViewer was used to demonstrate bibliometric network mapping. We use an article selection procedure starting with the searched keywords and year constraints and then exporting the database to a RIS file format. Over the last ten years, we retrieved 540 scientific publications published between 2012 and 2021 from the Scopus database. From the data obtained, researchers at the Russian Federation have the most published papers indexed by Scopus among the most productive countries (N=131), the most productive authors are Petrenko, S.A. (N=4), and the most subject area is Computer Science (N=246). We also use VOSViewer to map the Network Theme. This study recommends incorporating research subjects Artificial Intelligence for Digital Economy: Thing, Education, Platform, Global Economy, abbreviated as TEPGE research theme. © 2022 IEEE.

关键词： Mapping

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Experimental and simulation study of carbon capture in medical waste fluidized bed combustion

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AIP Conference Proceedings 2024年第1期2891卷

作者： I. Made Bagus Panji Aditya I. Nyoman Suprapta Winaya I. Wayan Arya Darma Rukmi Sari Hartati Magister Study Program of Mechanical Engineering Engineering Faculty-University of Udayana Denpasar Bali 80362 Indonesia Study Program of Mechanical Engineering Engineering Faculty-University of Udayana Denpasar Bali 80362 Indonesia Study Program of Electrical Engineering Engineering Faculty-University of Udayana Kampus Bukit Jimbaran Denpasar Bali 80362 Indonesia

During the Covid-19 pandemic, the use of health services has increased significantly, therefore, the production of medical waste also experienced a high increase. The most appropriate and suitable technology to destroy medical waste is incineration or combustion technology, one of which is fluidized bed combustion (FBC). In addition, the FBC technique can also reduce hydrocarbon gases resulting from combustion so as to reduce dioxins into the environment. The reduction in carbon gas during combustion is caused by the absorbent used as a bed material for fluidization process. This study used alumina sand bed material with variations in diameter of 0.2 mm, 0.5 mm, 0.8 mm and 1.1 mm. This research was conducted with an experimental approach method using a laboratory scale FBC reactor and modeling using the Barracuda Virtual Reactor Computational Particle Fluid Dynamics (CPFD) software simulation. The results of this study indicate that alumina sand with a diameter of 0.2 mm has ability to capture more carbon than other sand diameter variations. Based on the simulation, the variation of the 0.2 mm diameter also shows the best solid mixing results due to the relationship between the fluidization movement of the bed material in the reactor and the bed material’s ability to reach the highest up to 50 cm from the bottom of the reactor in the 60th second simulation.

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