Indonesia Conference Directory

Corresponding Author
Songtham Deewanichsakul

Institutions
Rajamangala University of Technology Thanyaburi

Abstract
The objective of this research is to develop training package of coaching technique : on the job training for Supervisor in Establishment. The researcher has used the constructed training package to test the purposive sampling group of 15 people who are the supervisor in Somboon Advance Technology Public Company Limited Before conduct training, the pretest was provided to the testing group or trainees for testing pre-knowledge. During the training program, trainees did their exercise to evaluate the training programs. After the training completion, the post test was provided to the trainees to evaluate their achievements. The exercises score and posttest was calculated in order to measure the effectiveness of the training package. The result of evaluation shows that the training package has the effectiveness of 83.05

Keywords
training package, on the job training, supervisor

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/qwXtyfmEhvnr

Corresponding Author
Resti Meysita Pramaesti

Institutions
Departement of Civil Engineering Lecturer of Politeknik Negeri Bandung. Jl. Gegerkalong Hilir, Ds. Ciwaruga, Bandung 40012
*hendry[at]polban.ac.id

Abstract
Soil is the material on which the structure built.. Soil conditions on the site greatly affect the type of foundation used. Clay is a bad type of soil if it has poor soil properties such as high plasticity, low shear strength, high swelling, and large shrinkage potential. Soil stabilization is an effort to improve the quality of the soil by using certain materials to increase soil strength. Soil improvement by using mixture materials are mostly done to stabilize the soil. The mixing material used is Lapindo mud. A number of soil improvement techniques are offered to overcome problems in soft soil. The selection of soil improvement techniques is generally based on the formation of soil geology, soil characteristics, and costs. The stabilization used is emulsion asphalt which is locked of 8% and Lapindo mud variation of 3%, 6%, 9% and 12%. The results of physical and mechanical properties on soil material with stabilization of Lapindo mud and emulsion asphalt were obtained that the specific gravity increased by about 68%, with the density value of 16% and the dry weight content of 6%. In the compressive strength testing, the more Lapindo mud mixture, the less compressive strength (qu) value.

Keywords
Lapindo Mud; Emulsion Asphalt; Clay; Stabilization; Compressive Strength.

Topic
Civil Engineering

Link: https://ifory.id/abstract/ebMPyARka8nZ

Corresponding Author
HUSAIN INSAWAN

Institutions
a) IAIN Kendari
*akiblandebawo24[at]gmail.com
b) Universitas Halu Oleo
c) IAIN Kendari
d) IAIN Kendari
e) IAIN Kendari
f) Universitas Halu Oleo

Abstract
This article intends to provide an overview of: 1) employee performance patterns based on Employee Information System (SIMPEG) data; 2) important characteristics of employee performance based on Employee Information System (SIMPEG) data; 3) employee performance classification based on Employee Information System (SIMPEG) data. The study was conducted using a qualitative approach, where data collection is done through a process of observation, study of documents, and interviews. The results of the research show that: 1) employee performance at IAIN Kendari tends to be stagnant, which is reflected in the daily performance report (LKH); 2) important characteristics of the performance of Kendari IAIN employees are to focus on routine, based on tasks and functions; 2) the performance of Kendari IAIN employees is divided into high, medium and low categories.

Keywords
Data Mining; Information Systems; Performance Measurement

Topic
Computers, Internet, Multimedia in Engineering Education

Link: https://ifory.id/abstract/ueX4nPhrzqcd

Corresponding Author
Anwar Sanusi

Institutions
1 Jurusan Pendidikan Teknologi dan Kejuruan, Sekolah Pascasarjana Universitas Pendidikan Indonesia, Bandung, Indonesia
2 Jurusan Pendidikan Teknik Elektro, Universitas Pendidikan Indonesia,Bandung Indonesia

*Corresponding Author, e-mail: ade_gaffar[at]upi.edu

Abstract
The internet continues to interact with almost every aspect of life, teachers will have more choices to use the Internet in the learning process. This study aims to find out internet use by teachers in vocational high schools based on their age. The results of the study were obtained from the results of interviews with teachers. Data from interviews were processed using qualitative methods. The results of the study prove that teachers use the internet to support their learning process. The findings obtained in this study are that older teachers have conducted software development training, while young teachers have not attended training, interestingly young teachers are more skilled in internet usage than older teachers.

Keywords
use of the Internet, Learning

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/jmfP7MyJcWYT

Corresponding Author
david yavis

Institutions
Post-Gradute Studies School, Universitas Pendidikan Indonesia, No. 207, Dr. Setiabudhi Street, Bandung 40154, Indonesia
davidyavis[at]upi.edu
davidalocafpasha[at]yahoo.co.id

Abstract
Remote sensing was introduced to the vocational School of Geomatics Engineering in 2013. Remote sensing is a science and technology related to the search of information about an object without touching the object directly . The purpose of this paper is to review the research related to remote sensing in the last 5 years. The Search results indicate that the scope of a remote sensing topic includes (1) Environmental monitoring such as mapping mangrove forest carbon reserves, detection and monitoring of oil spill-affected vegetation (2) interpretation of closure and change of land for Paddy field modeling, road detection and settlement quality (3) Mitigation and monitoring of natural disasters; Hotspots in the estimation of forest fires and floods (4) identification of natural resources; Copper (5) identification of plants; Determining species type, identification of agricultural crops etc. Images used are images of Landsat, AQUA/TERRA, and others. The constraints in this study are data storage that has a large volume. By reviewing the aspects examined were obtained a cheaper and more efficient way of improving the quality of the object. The conclusion of the search results is that this review will be able to enrich the science of knowledge at the remote sensing technology in Geomatics Engineering, especially related to learning content enrichment.

Keywords
Remote Sensing, Penginderaan Jauh, Geomatics Science

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/CBJLQywcM7VA

Corresponding Author
Devi Handaya

Institutions
a) Electronics Engineering, Politeknik Gajah Tunggal, Jl. Gatot Subroto KM. 7, Tangerang, Indonesia.
ihsan[at]poltek-gt.ac.id

b) Mechanical Engineering, Politeknik Negeri Jakarta, Jl. Prof. Dr. G.A Siwabessy, Kampus Baru UI, Depok 16424, Indonesia
devi.handaya[at]mesin.pnj.ac.id

Abstract
Detection of belt conditions as connector on AC motor can be done by knowing how characteristics vibration signal. All vibration signals are processed by using Fast Fourier Transform (FFT) to frequency domain. The vibration signal spectrums are collected and processed by Neural Network method so that conditions of belt can be grouped. Cause of the actual condition can be monitoring on Labview and Android apps. The proposed method is based on analyzing frequency-domain features with neural network. On this paper, it use two hidden layers on neural network. Result of experiment based on three grouped of condition can get accuration by 94.03% to 96.52%.

Keywords
vibration monitoring; belt vibration; neural network; labview; android apps

Topic
Electrical Engineering

Link: https://ifory.id/abstract/6gNrRpCn7HXF

Corresponding Author
sukmanto dibyo

Institutions
(a) Center for Nuclear Reactor Safety and Technology, Batan
Puspiptek, Serpong, South Tangerang, Indonesia
*sukdibyo[at]gmail.com
(b) Center for Nuclear Facility Engineering, Batan

Abstract
Abstract. A small size reactor called Reaktor Daya Eksperimen (RDE) is being designed by BATAN. The nuclear reactor with the power of 10 MWt based on the High Temperature Gas-Cooled Reactor (HTGR) type. The helium gas with high temperature is used to remove the heat generated from the reactor core. Therefore, the helium gas as primary cooling system of reactor is high temperature. The typical of reactor cooling system is that the primary coolant system pressure should be lower than the secondary coolant pressure. In order to load a nuclear fuel pebble into the reactor core, a fuel handling system (FHS) is applied. In the FHS, a carrier gas of pneumatic system is important to blow the fuel pebbles. The objective of the research is to calculate the thermal design of cooler heat exchanger in which the high temperature of helium gas as carrier gas is reduced to be lower temperature. In this case, a cooler is used to cool the helium gas by coolant water. Based on the specification data requirement to calculate the thermal design of cooler, the ChemCAD.6.1.4 software was performed. A shell-tube type of heat exchanger has been determined to reduce the temperature of helium gas from 250oC to be less than 60oC at pressure of 30 bars. The water as a coolant is passed into the shell-side at temperature of 28oC. In the design calculation, it has carried out through a various consideration on aspects of safety as well as optimization. The result of thermal design are as follows: the heat exchanger of shell-tube type using fixed tube sheet with heat duty of 0.3122 MJ/s, the coolant water mass flow rate is 3.55 kg/s, surface area for heat transfer is 51.4471 m2 and Log Mean Temperature Difference (LMTD) is 81.53oC. Furthermore, the design result requirement of heat exchanger based on the specification, design tolerance and manufacture in appropriate with the TEMA standard of shell-tube type. The thermal design of cooler in the carrier gas of pneumatic system is expected to provide the design of FHS.

Keywords
thermal design calculation, cooler heat exchanger, fuel handling pneumatic system

Topic
Chemical Engineering

Link: https://ifory.id/abstract/vJw4rmR8ZdVA

Corresponding Author
Griffani Megiyanto Rahmatullah

Institutions
(a) Electrical Engineering, Politeknik Negeri Bandung
Jl. Gegerkalong Hilir, Ciwaruga, Kec. Parongpong, Kabupaten Bandung Barat, Jawa Barat
(b) Faculty of Technic, Univesitas Jenderal Achmad Yani
Jl. Terusan Jend. Sudirman, Cibeber, Kec. Cimahi Sel., Kota Cimahi, Jawa Barat

Abstract
Traffic lights is one of infrastructures that aims to regulate traffic conditions on the highway. However, if there is damage to the lamp, the result is a hard unravel traffic jam. System is needed to monitor condition of the traffic lights so that it can be repaired as soon as possible when damage occurs. Research carried out is to create a traffic light functionality monitoring system and early notice to officers regarding corrective actions. The system is made with several functions namely functionality monitoring, duration setting, and highway condition monitoring. Data input components used are voltage sensors, Light Dependent Resistor (LDR) sensors, and cameras. Data will be sent from the field to the central system via File Transfer Protocol (FTP) server media. Monitoring application is made using Visual Basic NET compiler to check data that has been received. Central system is tested by downloading encrypted data from an FTP server and displayed on a desktop application. From the test results, application is able to decrypt the downloaded data, detect damage from traffic lights, and send short messages containing location data and damaged traffic lights to the repair technician.

Keywords
Traffic Light; Voltage Sensor; Light Dependent Resistor; File Transfer Protocol; Visual Basic NET

Topic
Electrical Engineering

Link: https://ifory.id/abstract/yvnbZ2kEPBpT

Corresponding Author
Muhammad Kholil

Institutions
a) Technology and Vocational Education Postgraduate Program, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia.
*muhammadkholil.2018[at]student.uny.ac.id
b) Department of Civil Engineering, Faculty of Engineering, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia.

Abstract
Vocational Training Center is a place that aims to train the community with technical and vocational skills, and to increase labor productivity according to the needs of the labor market. The Project-Based Learning Model (PjBL) is an alternative used in vocational learning because it provides learning experiences to produce a product. The purpose of this paper is to highlight the trainees responses to the benefits gained from the experience of the PjBL activities in the Computer Graphic Design training at the Vocational Training Center, which are based on four aspects, technical skill development, project management, teamwork, and relevance. Its data collection techniques uses a Likert scale questionnaire, and its data analysis techniques uses descriptive statistics. The findings of study indicated that the trainees assume that PjBL activities in computer graphic design training can provide positive learning experiences. The activities also helped the process of knowledge and skills construction in the form of technical skills. Aspects of teamwork, project management, and relevance can also build soft skills for trainees during the training.

Keywords
Project-Based Learning; Vocational Education and Training; Technical Skills

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/acYDfvZ2WkHE

Corresponding Author
Sutthiporn Boonsong

Institutions
a) Faculty of Technical Education, Rajamangala University of Technology Thanyaburi , Klong 6 , Thanyaburi, Pathumthani, 12110, THAILAND
* sutthiporn_b[at]rmutt.ac.th
b) Faculty of Business Administration, Rajamangala University of Technology Thanyaburi , Klong 6 , Thanyaburi, Pathumthani, 12110, THAILAND
c) Faculty of Technical Education, Rajamangala University of Technology Thanyaburi , Klong 6 , Thanyaburi, Pathumthani, 12110, THAILAND

Abstract
The purposes of this research were to develop training curriculum on “Curriculum Development in Moral, Culture and Folk Wisdom” for elementary teachers, and study the results of the training. The research design was research and development which there are three integrated research approaches; survey research, experimental research, and action research based on research methods that combine both quantitative and qualitative research methodologies. The sample used in phase 1 is the administrators, teachers, and experts who involved in the teaching and training of morals, cultures and folk wisdom for elementary teachers both from government and the private sector from 6 regions (Northern, West, South, East, Northeast, and Bangkok Metropolitan). The sample used in phase 2-3 is the elementary school teacher from various educational institutes which they were the try-out group and the group for test the effectiveness of the training curriculum by random sampling from 6 regions also which 1 province was sampling from each region. The results of the research were as follows. Phase 1 The results of the study on the situation and the development of training curriculum found that the administrators of the educational institution needed the training in various subjects as follows: 1) the design of teaching and learning activities in the curriculum; the media and learning resources in the curriculum. 3) the study of basic information. 4) the structure of the curriculum. 5) the purpose of the curriculum. 6) the content of the curriculum. 7) the methodologies for evaluation. The curriculum for moral culture and folk wisdom which the school needs were the development of local curriculum or additional courses. Phase 2 The results of training curriculum development were the draft of curriculum that includes the key components of the curriculum such as: rationale and purpose of the course, the structure, the scope of the training course, the time of training, the ways of training, training activities, measurement and evaluation. And the results of the training course try-out was found that the experimental group was able to develop curriculum both short-term training courses and local curriculum or course curriculum. By the way, the sample group can understand and develop various courses. Most of them are folk wisdom courses, secondly, it is a cultural course and moral course. The results of performance testing training curriculum and the curriculum evaluation revealed found that the samples were 6 elementary school teachers across the country. When being trained the sample is more understandable and able to develop the curriculum itself. The course can be developed both short-term training courses and courses or school courses. Moreover, they have gained experience in developing curriculum of morality, culture and folk wisdom include the ways for the curriculum development activities for the other courses. The results of the suitability assessment and satisfaction in the training curriculum of “Curriculum Development in Moral, Culture and Folk Wisdom” for elementary teachers it was found the sample were agree at the highest level in the suitability of the curriculum in all aspects, except the evaluation which the opinions are at a high level. The satisfaction on training in all aspects of the sample was at the highest level, and the sample had an understanding of this before the training was at a high level. There is a great deal of knowledge and understanding about this after the training at the highest level.

Keywords
Curriculum Development, Training Curriculum, Moral, Culture, Folk Wisdom

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/FnPzaHCQR6N9

Corresponding Author
Amelia Hayati

Institutions
School of Architecture, Planning and Policy Development,
Institute Technology Bandung

Abstract
The Millennial Situation and Condition are now changing the lifestyles of the urban societies, especially for women. It is also changing their travel behavior to do their daily activities to meet their family needs. Including in The Great Metropolitan Bandung Area, the urban women have high demand for their daily journey and tend to increase. By the theme of Gender Mainstream philosophy, urban women have the freedom to get their accessibility of going anywhere with their own transportation modes, including non-working urban women or as housewives in the region of Bandung. As WRI (2015) said that was more than 50% of womens mobility have a complex daily trip to meet their needs by doing their daily activities. It was done to meet the needs of family and home care in the terms of rising familys welfare. While less than 60% of mens travel behavior have a simple trip. This kind of condition is very interesting to be analyzed, especially in The Great Metropolitan Bandung Area. This study explains how complex the daily travel behavior of non-working urban women and as housewives with activities based approach that were done outdoor in a week. The quantitative data that is performed by socioeconomic and household demographic variables serve as the basis to measure the independent variables affecting family welfare, as well as the type, time, and duration of each daily activities and daily traveling data of non-working urban women. Using Clustering Methods approach to describe the width of research area, we could find the differences of models by Regression Analysis. So, we have 3 kinds of Regression Models to figure out the each of cluster from 3 Clusters that we find by Clustering Method in The Great Metropolitan Bandung Area. The result of this study could be used to make a change of city transportation policy and also to analyze the economic potential area by the models for the government officers and the business owner to increase their profit. By the regression models result, It could be used to estimate many variables in the future to increase the economic growth of the City from the transportation by users perspective.

Keywords
travel behavior, daily activities, accessibility, Clustering Method, The Great Metropolitan Bandung.

Topic
Civil Engineering

Link: https://ifory.id/abstract/vqMK2Xy3kRGN

Corresponding Author
Pairin Pairin

Institutions
a) IAIN Kendari
b) IAIN Kendari
c) IAIN Kendari
d) IAIN Kendari
e) IAIN Kendari
*syahrul.stain[at]gmail.com

Abstract
This article aims to provide an overview of: 1) The use of multimedia in learning planning at IAIN Kendari; 2) The use of multimedia in organizing learning at IAIN Kendari; 3) The use of multimedia in the implementation of learning at IAIN Kendari; 4) The use of multimedia in evaluating learning at IAIN Kendari. The study was conducted using a qualitative approach, where data was collected through a process of observation, interviews, and document deepening. The results showed that: 1) The use of multimedia in learning planning is realized in the Learning Program Plan; 2) The use of multimedia in organizing learning manifests in the activity of dividing the types of learning approaches that will be applied in class; 3) The use of multimedia in the implementation of learning is manifested in face-to-face, field studies, and online meetings through videos, web and blogs; 4) The use of multimedia in learning assessment covers aspects of the learning process and outcomes.

Keywords
Multimedia; Learning Management

Topic
New Technologies in Education

Link: https://ifory.id/abstract/4BXUzPHENGQA

Corresponding Author
Fatria Cahya Ramadhan

Institutions
Vocational Tecnology Education, Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia.

Abstract
Abstract: The common problem in this study is that deaf students have communication problems in learning and students have problems how to communicate with the instructor. The purpose of this study is expected to be able to find out that the use of visual media in motorcycle mechanic training can help the development, abilities and knowledge of deaf students. The procedure carried out was to analyze the communication skills of the deaf students by interviewing deaf students by one researcher and one isarat language expert. Three deaf students participated in this study. They are Deaf students with Profound Hearing Loss classification. The instrument in this study is the interview sheet containing questions relating to students perceptions about the use of visual multimedia with islamic language, initial test sheets, learning module sheets, job sheets and Rencana Proses Pembelajaran (RPP). The results showed that the students interviewed stated that visual multimedia with isarat language was very useful if used at every opportunity, be it during motorcycle training or other learning

Keywords
Visual Multimedia, Motorcycle Mechanical Training, Deaf Students

Topic
Engineering Education Research

Link: https://ifory.id/abstract/KY3hkdF4mnXy

Corresponding Author
Dewi Werdayani

Institutions
Universitas Pendidikan Indonesia
*dewiirfan[at]upi.edu

Abstract
The purpose of writing this paper is to analyze and collect data about the use of technology in fashion design. The focus of the data presentation is on the writing method of the paper carried out through literature review activities. The author analyzes the journal related to the use of technology in fashion design in the range between 2014-2019. Data analysis is done through the collection of types of technology used in the field of fashion design based on technological characteristics. The research findings illustrate that some of the technologies used in fashion design are 2D fashion design, 3D fashion design, digital communication, ecommerce. Internet-based information technology / information sources, related journals, fashion magazines, e-books, instragram, and android.

Keywords
Fashion Design, Kriya Tekstil, Application Technology

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/FvAbeyCcBfd9

Corresponding Author
Danang Junaedi

Institutions
(a) Informatics Department, School of Computing, Telkom University
Jl. Telekomunikasi Terusan Buah Batu, Bandung 40257 Indonesia
(b) Information technology Department, School of Computing, Telkom University
Jl. Telekomunikasi Terusan Buah Batu, Bandung 40257 Indonesia
danangjunaedi[at]telkomuniversity.ac.id

Abstract
The elderly is someone who has entered the age of 60 years who can-t feel the development of technology because the elderly experiencing in the digital immigrant. Besides, the elderly also have problems in managing their daily activities. Based on the results of the literature studies conducted, there is a problem when the elderly use the scheduling activities applications which are designed for the public. Other applications are also quite difficult to understand by the elderly. This causes recurring problems in the user interface design that is designed so the User Interface Design (UID) Pattern is required according to the needs and characteristics of the elderly to deal with these recurring problems. To do this research, the steps are collecting previous design solutions, user research, creating new design solutions, and testing design solutions. The results of this study are a UID pattern that will be used as a preliminary guide for designing UI of scheduling activity applications for the elderly and scheduling activity prototype for the elderly. The prototype will be tested using a usability measurement that is the USE Questionnaire. Therefore, it is generated UID Pattern scheduling activity application for the elderly that can help achieve the objectives in carrying out their activities.

Keywords
Design Pattern, Elderly, Scheduling, Scheduling Activity, USE Questionnaire, User Interface, User Interface Design Pattern

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/7yR3aXMNrfzT

Corresponding Author
veronikha effendy

Institutions
Telkom University

Abstract
E-catalog is a marketing media that aims to make it easier for consumers to get information about a product, including the type of product, the shape of the product even the price of the product. One of the official motor dealer in Indonesia has a Spare Parts e-catalog. Unfortunately, this application still has problems with the user interface, so it makes the user hard to get the information they need. This also strengthened by the low usability test results using the USE Questionnaire. The observation also showed that the image of the spare part is unclear so that makes it difficult for users to get the information and imagine the original shape of the spare part. The low usability results also indicate that this application is still difficult to use, difficult to learn and unsatisfactory for consumers. Based on those problems, a redesign of the user interface is required to assist users in obtaining the required spare part information. Appropriate technology for visualizing spare part images in more detail is Augmented Reality (AR). The re-designed user interface has built using The Goal-Directed Design (GDD) method for accommodate on achieving the goals of the user and the dealer. The prototype then evaluated by USE Questionnaire, and the usability value increased to 84%. This result indicate that the re-designed user interface of the application can facilitate the user in finding the information needed with easier way and satisfying.

Keywords
e-catalog, spare part, GDD, Augmented Reality, USE Questionnaire

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/9kHZCheMLWXD

Corresponding Author
Mochamad Rizkya Firmansyah

Institutions
Faculty of Technology and Vocational Education, Indonesia University of Education

Abstract
Situgede Village, Karangpawitan District, Garut Regency is one of the villages in Garut West Java that has the advantage of having the potential to produce crops, especially dry corn. However, the authors observations state that there has been no processing of dried corn kernels, especially for poultry feed, which incidentally is abundant in the Situgede Village and surrounding areas. The authors observations also state that ungags in the Situgede Village and surrounding areas received feed supplies from outside the region, for example from East Java and Central Java. This was felt to be ineffective given the potential for abundant sources of feed ingredients in the area, namely corn kernels. Therefore, through the tasks of the Analysis and Design Course, the author designed and built a Corn Seed Crusher Machine to meet the needs of poultry feed in the area and its surroundings independently. By collaborating with the Koperasi Unit Desa Situgede Village as a vendor for writers, it is hoped that this goal can be achieved. The method used is the observation of the area around the Situgede Village and its surroundings, interviews with several related figures, study of literature with several sources such as books and journals, and analysis and design to design machines according to needs. With the results of the design of the machine made by the author obtained Corn Seed Crusher Machine with a capacity specification of 10 kg / hour.

Keywords
utilization, crusher machine, corn seed, poultry

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/K6exDCcaNkJR

Corresponding Author
Agustinus Ngatin

Institutions
Politeknik Negeri Bandung

Abstract
Utilization of mangosteen rind extract as carbon steel inhibitors in the environment of hydrochloric acid (HCl) 0.1M, 0.5M, and 1.0M. Extracts were carried out by extraction using ethanol solvent at a temperature of 600C with a time of 80 minutes. The research objective was to determine the effect of extract concentration on the carbon steel corrosion rate and its inhibitory efficiency, the effect of the corroding time on the corrosion rate and the inhibitory efficiency for 1000 ppm extract, and study the process of corrosion inhibition on carbon steel in HCl solution. Extract of mangosteen peel extracted using ethanol solvent was applied to HCl solution with a variation of the concentration of extract (100 ppm to 1000 ppm in 3 days, the effect of time of corroding the carbon steel with the addition of 1000 ppm extract. Corrosion rate is calculated based on the difference in weight and corrosion products shown by microscope optics The results of the extraction process research carried out at 600C with 80 minutes with a stirring of 700 rpm produced a yield of 16.71% with a ratio of mangosteen peel powder and 1: 11. The inhibitory properties of mangosteen peel extract for three (3) days increased with increasing extract concentrations up to 76.53% in 0.1M HCl solution and 28.83% in 1.0M HCl solutions. For the addition of 1000 ppm mangosteen peel extract showed inhibitor efficiency reached about 90% at 2 days of corrosive time in HCl 0 , 5 M, 87% in 1.0 M HCl solution, and 81% in 0.1 M HCl solution. Mechanism of mangosteen peel extract performance agai carbon steel corrosion inhibitors through the process of diffusion of compounds in extracts on the surface of carbon steel and react with ferro ions (Fe 2 +) to form chemical covalent coordination coordinate the surface of carbon steel with a thickness of 76 µm.

Keywords
mangosteen peel extract, corrosion inhibitor, carbon steel, hydrochloric acid

Topic
Chemical Engineering

Link: https://ifory.id/abstract/zY68LrXKbpma

Corresponding Author
Ernawati Hendrakusumah

Institutions
1,2) Lecturer in Urban and Regional Department, Faculty of Engineering, Unisba
3) Student in Urban and Regional Planning, Unisba Postgraduate Program

Abstract
ABSTRACT The purpose of this study was to identify post-mining land use practices in Cibeureum Village, Cimalaka District, Sumedang Regency, West Java Province. This area is rich in mining natural resources, especially the C-quarry mine. Even though various regulations regarding mining land exploitation are available, in reality there have been many neglections of these lands after mining. However, it is different from what happened in the village of Cibeureum, the land at the foot of Mount Tampomas, in which there are deposits of sand and rock mining, post-mining can still be used for agricultural activities by the land reclamation method conducted by the local community. This paper will describe how local communities have a concern in utilizing post-mining land through the reclamation method? What factors drive local people to want to use post-mining land? The analysis was carried out through participatory observation methods, focus group discussions, and in-depth interviews with relevant stakeholders. The results showed that the main thing underlying it was the existence of a collective awareness of the community to be able to live as a form of pious charity because of Allah SWT.

Keywords
Collective awareness in land reclamation

Topic
Environmental Engineering

Link: https://ifory.id/abstract/zeDTwXtPmFaC

Corresponding Author
Nur Alim

Institutions
a) IAIN Kendari
b) IAIN Kendari
c) IAIN Kendari
d) IAIN Kendari
*syahrul.stain[at]gmail.com
e) IAIN Kendari

Abstract
This article aims to provide an overview of: 1) Strengthening digital-based learning in Islamic Boarding School Ummushshabri Kendari; 2) Utilization of smart TV in learning activities at the Islamic Boarding School Ummushshabri Kendari; 3) Student teacher readiness in digital learning through smart TV at the Islamic Boarding School Ummushshabri Kendari. This study uses a qualitative approach, in which the process of collecting data through the process of interviews, participatory observation, and document deepening. The data analysis is done through the process of data reduction, data presentation, and drawing conclusions. The results showed that: 1) Strengthening digital-based learning at the Ummushshabri Islamic Boarding School in Kendari was the main agenda in the development of institutions, also in response to the 4.0 era; 2) Utilization of smart TV in learning at Islamic Boarding School Ummushshabri is realized by diverting learning resources on digital features such as YouTube, blogs, Google books, and electronic national libraries; 3) Teacher readiness is demonstrated through their ability to use smart TVs, including smartphone connections with smart TVs, and is evidenced by the design of learning programs using smart TVs

Keywords
Smart TV; Digital Learning; Islamic Boarding School

Topic
New Technologies in Education

Link: https://ifory.id/abstract/pd2nvUTXkbag

Corresponding Author
Rika Favoria Gusa

Institutions
(1) Department of Electrical Engineering, Universitas Bangka Belitung, Indonesia
*rikafavoriagusa[at]gmail.com

Abstract
Kelapan Island is one of the outermost islands in the Bangka Belitung Islands. With a total of 30 households consisting of 120 people, electricity needs are currently from diesel generators. Electrical equipment is dominant on Island of Kelapan such as lights, televisions, fans, irons also several units of refrigerators and washing machines. For reduce the use of fossil energy, electrical energy sources are modeled for supply using photovoltaic. The average amount of electricity needed per house is 290.9 kW, so the amount of power required for 4 hours at night is 34.908 kWh. Photovoltaic will be modeled in 2 stages, centralized photovoltaic and photovoltaic in each residents house. The photovoltaic modeling installed in each residential home requires four units of 100 Wp solar panels, six units of 100 Ah batteries, 1 unit of 400- watt inverters and four units of solar charger controller. Whereas for the centralized photovoltaic model requires 97 units of 100 Wp solar panels, 160 units of 100 Ah batteries, 25 units of 400-watt inverters and 108 units of solar charger controllers

Keywords
outermost island, photovoltaic, electricity

Topic
Electrical Engineering

Link: https://ifory.id/abstract/tZWXaQB36kMn

Corresponding Author
Rini Fath Marsya

Institutions
a) Program Studi Magister Pendidikan Kimia, Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudhi No. 229, Bandung, 40154, Indonesia
b) Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudhi No.229, Bandung, 40154, Indonesia
*rini.f.marsya[at]upi.edu

Abstract
View of nature of science and technology (VNOST) was used to explain the phenomena of science and technology, and to explore the relation of science, technology, and society. Organic light-emitting diodes (OLED) technology was one of the latest technologies that contain the Nature of science and technology (NOST) aspect and can be used to improve the chemistry learning process. The purpose of this research was to validate the development of didactical design of OLED. The research method was the Model of educational reconstruction (MER). Validation involves 5 experts (lecturers) as validators using a validation sheet contains indicators of learning achievements, student activities, predictions of pre-service chemistry teacher responses, and the anticipation of educators. Validation was analyzed using the content validity index (CVI). The results showed that didactical design of OLED based on VNOST was appropriate for use in chemistry lectures that connecting the chemical concepts with the latest technology where the CVI value was 0.95.

Keywords
Validation, Didactical design, Organic light-emitting diodes, View of nature of science and technology.

Topic
New Technologies in Education

Link: https://ifory.id/abstract/KWgJyV3jYCUc

Corresponding Author
Meda Wahini

Institutions
a) Meda Wahini
Home Economic Departement, Universitas Negeri Surabaya, Ketintang Street, Surabaya, 60231, Indonesia
*medawahini[at]unesa.ac.id
b) Luthfi Novela, Cicik Rohmawati
Fresh-graduate majored in Culinary, Universitas Negeri Surabaya, Ketintang Street, Surabaya, 60231, Indonesia

Abstract
The emerging science technology to develop underutilized by-product nowadays is necessary to be enhanced. Since in association with the increasing productivity of tropical fruit around Southeast Asia, such as durian. Valuable nutrition content of the durian by-product, especially on its seed, has been reported. It also has potential to be processed into flour and utilized in food application. Wheat flour substitution with durian seed flour (DSF) in dry choux pastry as nutritional value-added food application is investigated in this study. Formula experiment, organoleptic properties and nutritional value also examined. Product criteria was assessed in 5 scales for each organoleptic properties namely shape, color, crispiness, odor, and taste. Laboratory test were carried out to obtain nutrition value namely carbohydrates, proteins, fats and fiber. The result were: 1) DSF was indicated to be edible and can be incorporated as much 4% in dry choux pastry formula; 2) the organoleptic quality was assessed as good to very good and 3) the nutrition content as obtained were carbohydrate (76.35%), protein (7.80%), fat (9.88%) and fiber (2.05%). Result in this study suggested on establishment of sustainable durian seed segregation and widely utilized into feasible consumed nutritious and healthy product.

Keywords
tropical fruit, fruit waste valorisation, nutritional value, pastry product

Topic
Industrial Engineering

Link: https://ifory.id/abstract/bvUNVJDcwM7C

Corresponding Author
Syahrul Marham

Institutions
a) IAIN Kendari
*rusdinmuhalling02[at]gmail.com
b) IAIN Kendari
c) IAIN Kendari
d) IAIN Kendari
e) IAIN Kendari

Abstract
This article aims to provide an overview of: 1) technological devices used in determining prayer times; 2) the use of technology for determining prayer times in the learning process of astronomy; 3) the development of techniques for determining prayer times in the sphere of astronomy. The study was conducted using a qualitative approach, where data was collected through a process of observation, interviews, and reading documents. Data analysis was performed by reducing data, presenting data, and drawing conclusions. The results showed that: 1) The technology for determining the prayer time has experienced rapid development, from the manual to digital way. GPS technology or Global Positioning System has been developed in the android application. 2) presenting the technology for determining prayer times in learning is very easy, especially because the average student has a smart phone, which can be used to upload andoid applications. 3) Academically, the development of techniques for determining prayer times continues to be carried out by conducting experiments in unusual natural conditions. In addition, it is encouraging the establishment of astronomical laboratories in Islamic Higher Education

Keywords
Technology; Learning; Astronomy

Topic
New Technologies in Education

Link: https://ifory.id/abstract/QvC4Vx7mJUXd

Corresponding Author
Yadi Mul Yadi

Institutions
Universitas Pendidikan Indonesia

Abstract
Abstract : In todays digital era two dominant paradigms running in parallel were first developed in Germany and Japan, namely the industrial 4.0 and the community paradigm 5.0. These two paradigms will provide significant multiple effects on the education system, both content, methodology and learning models. The main problem that will occur is a shift in values, models and technological procedures that occur in extreme and fundamental ways. The Industrial Revolution 4.0 developed a model of an internet-based system (IoT) with various infrastructure approaches, both hardware, and software. Japan addressed the high-level application of revolution 4.0 by developing a community model system 5.0 (Society 5.0). This model gave up most of the management of the system in artificial intelligence autonomously in carrying out executions of various life issues extensively. This condition certainly brings new wisdom to the process of cultural transformation of interfaces between humans and intelligent machines. Technology and vocational education will come into direct contact with these two significant paradigms related to substance, application, and cultural concepts. In this context, especially vocational technology education teachers who play an important role in forming and producing competent graduates need to understand and master the concepts of industrial 4.0 and the phenomenon of society 5.0. Therefore the purpose of writing this article will be to map comprehensively the perceptions of vocational teachers towards the implementation of the industrial era 4.0 and society 5.0 and its output will produce a qualitative model of vocational teacher perceptions. Keywords: Vocational Technology Education, Vocational Teacher Perception, Industrial Revolution Era 4.0, society 5.0

Keywords
Vocational Technology Education, Vocational Teacher Perception, Industrial Revolution Era 4.0, society 5.0

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/Wv2NpYFwhRHG

Corresponding Author
Alvera Apridalianti Melkias

Institutions
Department of Energy Conversion Engineering, Politeknik Negeri Bandung Jalan Gegerkalong Hilir, Ciwaruga 40012, Jawa Barat, Indonesia

Abstract
A specially designed low speed generator has been developed in order to be used on low speed turbines. The axial flux permanent magnet (AFPM) generator type was chosen to meet these needs. The generator consists of a stator and a rotor. To determine the characteristics of the AFPM generator, we conducted a study of the effect of the distance between the stator and rotor, and the effect of rotational speed on the output voltage. The stator armature was made of copper wire with a diameter of 0.2 mm. The number of turns of a winding was 200 turns which produced a resistance of 100 ohms. The shape of the armature was adjusted to the shape of the magnet. The rotor disc was occupied by 18 magnets arranged symmetrically. The size of the magnet was 50 mm long, 30 mm wide and 10 mm thick. The laboratory test was conducted by placing the rotor ranging from 23 mm to 15 mm, with changes in distance of 2 mm each, from the stator. From the measurement, the linear equation of output voltage vs rpm curve was obtained as well as the output vs stator-rotor equation. From the result, it can be seen that increase of rpm and the closer the rotor-stator distance, the higher the output voltage.

Keywords
AFPM generator, characteristics, output voltage, rotor, low speed generator

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/8NYAZDQbL7mf

Corresponding Author
DADANG HAFID

Institutions
Technological and Vocational Education Students Programs Graduate School, Universitas Pendidikan Indonesia.
Jl. Dr. Setiabudhi no 229, Bandung, West Java, Indonesia.

Abstract
This research was conducted with the aim to analyze schools of vocational education (SMK) which uses Work Based Learning Models. This research was conducted by direct observation of students of Merdeka Soreang Vocational School Competencies in Motorcycle Business Engineering by comparing the competencies between students who use the WBL model model with students who do not use the Wbl model The research aimed to get information about existence of competences difference from both groups of students. The basic assumption of this research is partical competence will describe student to understand knowledge, attitude and skills when work in work shop. Whereas, the hypothesis of writer it that “ there are significant differences of competences between students who use the WBL learning model with students who do not use the Wbl model. The method used in this research is analytical descriptive method. The result of this study indicates that the average test test score of students assisted do not use the Wbl model is 57,19 while that of use the WBL model is 54,91; the average questionnaire score is 55,57 and 50,2; And the average observation score is 67,07 and 49,40; and the average competences is 179,3 and 152,14. According h test, for the firs hypothesis it is obtained h = 14 > 11 to this Ho is accepted. It means that there is no significant difference in knowledge between students assited by do not use the Wbl model an students use the WBL model. According to t test, for second hypothesis is obtained h = 14 > 11, so that Ho rejected. It means that there is a significant difference in attitude between students assisted by do not use the Wbl model and students use the WBL model. For the third hypothesis it is obtained h = 11, 4 < 11, so that Ho rejected. It meand that there is a significant difference in skill between students assisted by do not use the Wbl model and studens use the WBL model. And for the fourth hypothesis it is obtained h = 16 < 11, so that Ho rejected. It means that there is a significant difference in competence between students assisted bt do not use the Wbl model Motor and students use the WBL model.

Keywords
Keyword; a learning approach that leverages the workplace to structure the experience gained in the workplace

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/bwpRvxL94yJg

Corresponding Author
Yana Sudarsa

Institutions
Electrical Engineering Department, Bandung of State Polytechnic

Abstract
Final Project Electrical Engineering Students at Bandung of State Polytechnic is a compulsory subject of 6 credits. It consists of the student undertaking an autonomous project under the direction of an advisor, the completion of which is intended to help the students implement the skills that they have gained during their studies and ensure that they acquire the relevant competences associated with their degree. To manage this activities is complex and time consuming for students, advisors, and committee. The final project process starts from proposed final project students, evaluation them, advising, reporting, and examination. To manage it, web based application that nowadays is very popular is applied. So, this paper presents the Final Project Student MIS Application web platform designed for Electrical Engineering Department students and their lecturer. The system is called SePaKaT TA (Sistem Pengambilan Keputusan Terpadu Tugas Akhir). The process of implementation of the system is based on the Waterfall Method that is a breakdown of project activities into linear sequential phases, where each phase depends on the deliverables of the previous one and corresponds to a specialization of tasks. The approach is typical for certain areas of engineering design. The Final Project Student MIS Application is a best solution because it-s support on time correctly without delays and informing online all students. In addition, the system provides with Decision Support System (DSS) to decide students eligible for examination based on requirements. Other advantages of the system is less paper usage and less people to manage

Keywords
Web Development System, Decision Support System, Online Management System, Student MIS Application

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/pynTdXPERrtW

Corresponding Author
Apip Badarudin

Institutions
a) Refrigeration and Air Conditioning, Politeknik Negeri Bandung
Jl. Gegerkalong Hilir, Ciwaruga, Kab. Bandung-Barat, 40012, Indonesia
* apipbdr[at]polban.ac.id

Abstract
The point on the psychrometric chart shows 7 properties of certain air conditions. If two properties are known then 5 other properties can be calculated. Air treatment will change properties of air conditions. Changes in air condition can be determined by measuring each air condition and plotted on a psychrometric chart. One of the uses of psychrometric analysis is to determine the amount of cooling capacity used in air conditioning systems. To show the condition of the air at any time needed a system that is integrated between the data acquisition device and data display. This research designs and develops applications that are ready to display data and air psychrometric charts that can later be integrated with hardware equipped with sensors through an interface. Psychrometric applications are designed using the JavaScript programming language, so they can be opened using any web browser. Psychrometric charts are drawn using iteration calculation methods. The appearance of the air psychrometric chart is in the form of air processing points, namely outside air (OA), air mixing (EA) and indoor air condition (RA) and other air processing lines.

Keywords
psychrometric; air conditions; properties

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/xMCdKkTVw6v3

Corresponding Author
Wahyu Rafdinal

Institutions
a) Politeknik Negeri Bandung
wahyu.rafdinal[at]polban.ac.id
b) Politeknik Negeri Bandung
eko.susanto[at]polban.ac.id
c) Politeknik Negeri Bandung
mohammad.rizal[at]polban.ac.id

Abstract
The rapid development of online games makes online games very popular. This study aims to analyse the factors that make a person addicted to playing online games. This research analyses game features and social perspectives that influence online game addiction. Respondents in this study are online game players in Indonesia who play online games more than 21 hours a week with 150 respondents. The analysis technique used is PLS-SEM. The results showed that game features had a significant effect on game addiction. Social factors such as network convergence, interdependence, sense of community, relational switching cost contributed to game addiction. This research can be information on the factors that influence game addiction.

Keywords
game addiction, game features, social perspectives

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/B7aYxTZWePpL