Indonesia Conference Directory

Corresponding Author
Mohamad Satori

Institutions
*(a) Industrial Engineering, Faculty of Engineering,
Universitas Islam Bandung
Jl. Tamansari, No. 1 Banung, Indonesia

Abstract
The challenges facing in city waste management increasing and complex, both because of more rubbish increases and junks that currently become an environmental issue, social as well as economics. In waste problem, the situation of this matter is more complex so involvement all stakeholders in garbage management, both the government and non-government (community, business world, informal business sector, and others) are so crucial. One of the social roles as part of city waste management is through waste bank (WB). Waste Bank is a pile of citizens does the activity of collecting waste recyclable and sold to the collectors of garbage. Based on the result of previous studies WB has become a part of reducing garbage and increasing the income of society. But WB currently still its volunteers and sustainability are not guaranteed. This article looks at how WB business can be expanded and the performance of WB can be increased environmentally and economically.

Keywords
waste management; community base; composting; recycling

Topic
Environmental Engineering

Link: https://ifory.id/abstract/C6uKbcANjkBD

Corresponding Author
NURHAYATI SEMBIRING

Institutions
Department of Industrial Engineering, Faculty of Engineering, Universitas Sumatera Utara,
Jalan Almamater Kampus USU, Medan, Indonesia 20155
nurhayatipandia68[at]usu.ac.id
intans13[at]gmail.com

Abstract
The high level of demand for crumb rubber had caused a shortage of raw materials used for production. It also causes the greater the quantity of waste produced. This will have an impact on the environment. In addition, the social impact of the waste generated from production will cause restlessness to the surrounding community. Handling this will have an impact on the economic aspects. This study aims to model a sustainable supply chain at PT. X is based on environmental, social and economic performance using the Partial Least Square method. Data analysis was performed by testing validity, reliability testing, and analysis. The results of the study show that the sustainable supply chain model produces a positive relationship with environmental, social, and economic performance.

Keywords
Economic Performance, Environmental Performance, Social Performance, Sustainable Supply Chain.

Topic
Industrial Engineering

Link: https://ifory.id/abstract/kKG8Uv7mNqFQ

Corresponding Author
Irland Fardani

Institutions
Bandung Islamic University

Abstract
Information Technology-based Education Management is an education system where the education management system includes the management of teaching and learning process data, student data management of educators and education staff as well as school infrastructure is carried out using information technology. Several studies have discussed factors about what influences teachers in using IT, that is access to resources, quality of software and hardware, ease of use, incentives to change, support and collegiality in their school, school and national polices (Mumtaz, 2000). Problems arise when the teaching and learning process does not change while the world of information technology changes very rapidly,because of that the world of education must adapt to the progress of IT. This purpose of this research is to see how IT can be implementing in education environment and analyzed using the SWOT (Strengths, Weaknesses, Opportunities, and Threats) methods for the Education and School Service in Bekasi Regency . The result is that the Education and School Service in Bekasi Regency is in quadrant 4, This means that this is a very unfortunate situation, the organization faces various internal threats and weaknesses. For this reason, the need for an agenda of activities related to planning, organizing, implementing, and controlling the academic management system for elementary and junior high schools in Bekasi Regency is related to information system-based education procedures

Keywords
Education, IT, SWOT

Topic
Engineering Education Research

Link: https://ifory.id/abstract/WMw9huTpxBCA

Corresponding Author
Teuku Rihayat

Institutions
(1)Departement of Chemical Engineering, Politeknik Negeri Lhokseumaw 24301 Aceh, Indonesia
*teukurihayat[at]yahoo.com

Abstract
Research on the manufacture of polyurethane with chitosan and bentonite fillers modified with CTAB into montmorillonite (MMT) which will be applied to medical devices. The raw polyurethane from castor oil and diisocyanate is in the form of Toluene Diisocyanate (TDI). The addition of chitosan to castor oil polyurethane functions as an anti-bacterial agent. Pure polyurethane still has a deficiency of high temperatures and therefore added MMT which functions as a heat-retaining agent. The bacteria used are E. coli bacteria and Staphylococcus Aureus bacteria. The results showed a polyurethane that can withstand high temperatures is PU-MMT-CS 6%. The best anti-bacterial properties were obtained in polyurethane containing chitosan with higher concentrations (PU-MMT-CS 6%).

Keywords
Polyurethane, Bentonite, Chitosan, MMT, Polyol, Castor Oil, Heat Resistance, Anti- Bacterial

Topic
Material Engineering

Link: https://ifory.id/abstract/GjwqndWakf87

Corresponding Author
Sri Ramayanti

Institutions
Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas Indonesia
*sri.ramayanti71[at]ui.ac.id

Abstract
Zinc Oxide (ZnO) has attracted much attraction for its potential applications in ultraviolet region including sensors, solar energy, laser technology, optoelectronics and transparent conducting oxide. In this work, the influence of growth time and concentration of Hexamethylenetetramine (C6H12N4 / HMTA) on the formation of ZnO nanorods using Chemical Bath Deposition were investigated. ZnO nanorods (ZNRs) were synthesized on the FTO glass through a chemical bath deposition (CBD) using zinc nitrate tetrahydrate powder (Zn(NO3)2.4H2O) and HMTA with molar ratio 1:1, 1:2 and 1:4 at 90°C. The growth duration was varied at 120, 150 and 180 minutes at annealing temperature of 90oC. The synthesized ZnO was characterized using a scanning mission electron microscope (SEM), X-ray diffraction (XRD), and ultraviolet-visible spectroscopies (UV-Vis). Growth duration and concentration of HMTA were found to influence the morphology, orientation, and diameter of the ZNRs. X-ray diffractograms demonstrated strong and sharp peak at (002) plane as an indication of c-axis ZNRs. Secondary electron images showed that ZNRs were well aligned along the c-axis and the diameter of nanorods is increasing with the increased of growth time and concentration of HMTA. The optical properties of ZNRs showed that the absorbance increase at high growth time and concentration of HMTA.

Keywords
ZnO; Nanorod; Growth time; HTMA

Topic
Material Engineering

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

Corresponding Author
Eko Andrijanto

Institutions
Politeknik Negeri Bandung

Abstract
Edible coating such as chitosan was utilized to prevent fruit from ripening and prolong the shelf life. Grapes and tomato were used as samples and treated with chitosan solution at different concentration 1, 2 and 3%. The combination of 3% chitosan solution with polyphenol and ascorbic acid at different concentration were also studied. The polyphenol was extracted from green tea using maceration technique . The fruit samples were analyzed by measuring the color changes of the fruits. The shelf life of the grapes was improved almost 2.5 times longer using 3% chitosan solution compared to the uncoated grapes. The shelf life is increased from 6 days to 16 days. Tomato shelf life was also enhanced using 3 % chitosan solution from 4 days to 15 days for the coated chitosan. The addition of polyphenol and ascorbic acid to the chitosan solution was only slightly prolong the shelf life of the samples although it is not very significant compared to the blank. The results proved that the chitosan treatment to grapes and tomato enhanced their shelf life and this material has potential to be used industrially and it can benefit for farmer.

Keywords
Chitosan, grape, tomato, polyphenol, fruit quality

Topic
Chemical Engineering

Link: https://ifory.id/abstract/eWjvQanFL6q9

Corresponding Author
Yusmaniar Yusmaniar

Institutions
Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas negeri Jakarta ,13220, Indonesia

Abstract
Abstract. The aim of this study is to synthesize mesoporous silica composites with activated carbon by utilizing rice husk waste and coconut shell as adsorbent to absorbs methyl orange dyes. Rice husk ash was hybridized with PEG into silica-PEG, then PEG was released by solvothermal extraction using DMG (dymethyl sulfoxide) as solvent to obtain mesopore silica. Composites are formed by homogenizing mesoporous silica and activated carbon with methanol. Mesopore silica composites were successfully synthesized based on SEM-EDX data which showed the distribution of carbon, silica and oxygen in surface morphology with content of 76.99%, 5.08% and 17.93% respectively. The results showed that the adsorption of composite adsorbent reached the adsorption capacity of 0,470 mg.g-1 in a pH 2 solution with 30 minutes of contact time. The occurrence of methyl orange adsorption is monolayer because it match the Langmuir adsorption isotherm equation.

Keywords
Mesopore Sillica, Rice Husk, adsorbent

Topic
Environmental Engineering

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

Corresponding Author
Mohamad Satori

Institutions
Universitas Islam Bandung

Abstract
Nowadays business competition is getting tougher, especially with regard to meeting consumer needs. Unstable market demand is often a challenge for companies in meeting market demand. Conditions of demand that are often more than inventory or vice versa incur costs that must be borne by the company. The study was conducted at PT. Tri Sapta Jaya which is engaged in the distribution of medical devices, medicines and formula milk. The problem that arises is when the supply is more than demand, the company will have to bear the cost of saving. Meanwhile, when inventory is less than demand, the company must bear the cost of a product backlog. Problem-solving uses a dynamic system approach that has the characteristics of being influenced by time and the existence of interrelationships loop. Causal loop and stock & flow diagrams are used to describe the companys inventory system, then scenarios are carried out to minimize inventory system costs. Two improvement scenarios were carried out, namely the scenario of increasing safety stock and the scenario of reducing lead time. The results obtained from the study are the improvement scenarios chosen are the scenarios of reducing lead time. This scenario can reduce the total cost of the inventory system by Rp. 13,879,099. By applying this scenario, the company can reduce the cost of saving which is one of the costs in total costs

Keywords
backlog, lead time, dynamic system, inventory cost

Topic
Industrial Engineering

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

Corresponding Author
Patra Dewa

Institutions
Universitas Pendidikan Indonesia, Bandung, Indonesia
patradewa[at]upi.edu

Abstract
The purpose of this research is to know procedure of System Information Geographic (SIG) that can be applied in vocational education. The study uses the systematic literature review (SLR), which was published in only 30 journals published in 2014 – 2019 that discussed SIG in vocational education. The results represent that SIG is a computer based information system that combines elements of the map (attribute data) that is designed to process, analyze and display spatial data that references esrth conditions. That role of SIG is very reliable to help learning activities related to spatial aspects.

Keywords
System Information Geographic (SIG), SIG Learning, Role of SIG, Spatial Thinking

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/vV9ahJXkrnBD

Corresponding Author
Herawati Budiastuti

Institutions
Politeknik Negeri Bandung

Abstract
High demanding of tofu as a food type containing high protein-s source in Indonesia is followed by increasing amount of tofu waste produced from this industry, both solid and liquid waste. The high amount of organic material of this wastewater (9,880 mg COD/L) results in its potential to be treated biologically by the combination of the anaerobic-aerobic process. To enhance the process efficiency and better quality of the effluent, in this study, coagulation and flocculation process was added as the finishing process after biological treatment methods. The purposes of this research were to evaluate the more effective method between aerobic process and the combination of anaerobic-aerobic process and to determine the best dose of tamarind seed as the natural coagulant. Doses variant used were 1,000 ppm, 2,000 ppm, 3,000 ppm, and 4,000 ppm. The result showed that the aerobic process had a slightly better performance of COD removal compared to the combination process (anaerobic-aerobic), which was about 89.744%. The finishing process, coagulation and flocculation was focused on lowering turbidity level of the effluent of biological process. 2,000 ppm of tamarind seed gave the best result on decreasing turbidity level for both processes, aerobic process (63.745%) and anaerobic-aerobic process (47.567%).

Keywords
Tofu liquid waste, Aerobic, Anaerobic, Coagulation, Flocculation, Turbidity

Topic
Chemical Engineering

Link: https://ifory.id/abstract/pdfZMPB2qkJx

Corresponding Author
Udin Samsudin

Institutions
Technology and Vocational Education, Universitas Pendidikan Indonesia (UPI)
Jl.Dr. Setiabudhi 207 Bandung 40154 Indonesia

Abstract
This study reports the results obtained from teacher opinion surveys about the use of Information and Communication Technology (ICT) tools to support the Practice learning process. To conduct this research, a questionnaire was utilized to collect data among all the teachers of Vocational Competency in Desain Permodelan dan Informasi Bangunan (DPIB) who are members of the West Java Province Musyawarah Guru Mata Pelajaran (MGMP) using Google Form. The findings indicate that respondents remained open-minded about the use of ICT tools in their daily practice learning process, at that point, this research is expected to contribute significantly to the education unit and provide accurate information about the use of ICT in the practical learning process. The survey is also expected to encourage education units to use ICT tools in every field where possible, with the aim of increasing access to learning, providing equal educational opportunities for all and ensuring lifelong learning, which is the mainstay of the Bologna Declaration.

Keywords
The use of ICT tools in the practice learning process, increases access to learning

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/Z3phBFucCrWD

Corresponding Author
Widiyanti Sunarto

Institutions
a) Department of Mechanical Engineering, State University of Malang
Semarang Road 5, Lowokwaru, Malang, Indonesia 65145
*widiyanti.ft[at]um.ac.id
b) Graduate School of Technological and Vocational Education, National Yunlin University of Science and Technology
Daxue Road 123 Sec. 3 , Douliu, Yunlin, Taiwan 64002

Abstract
Preparing competent human resources can be conducted through vocational high school (VHS). Even so, in 2018 VHS graduates contributed the highest unemployment rate with 9.27% of the total unemployment rate. To overcome the problem that the VHS graduates number is not proportional to the jobs available annually, entrepreneurship is one rational solution. This is the requisite reason for the government to implement teaching factory program at VHS. This study aimed to promote the VHS students- entrepreneurial spirit as well as improve productive competencies through implementation of teaching factory. As the quantitative method was used, the data was gathered from 108 students of Light Vehicle Engineering in State VHS 10 Malang through questionnaires and documentation. As the test results, teaching factory enhance the students- entrepreneurial spirit was shown as the sig. value 0.046<0.05 and increase the outcome in productive courses as the ig. value 0.036<0.05. In conclusion, the teaching factory program implemented in State VHS 10 Malang grow the students- entrepreneurship mindset as well as boost their productive competences.

Keywords
Teaching Factory; Entrepreneurship; Vocational Competencies.

Topic
Technical and Vocational Education

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

Corresponding Author
Silvia Dewi Sagita Andik

Institutions
College of Vocational Studies, IPB University

Abstract
The main problem in Indonesia Education is the enhancement of unemployment rate mostly obtained from the vocational school. Thus, vocational education institution needed to develop Technical Education and Vocational Training (TVET) through increased collaboration with Industries and business. The aims of this research to describe the development of TVET programme in an educational institution, especially in the College of Vocational Studies IPB. In addition, this paper analyzes the strategies to increased cooperation with industries precisely. The method used in this research is qualitative research with SWOT analysis. The develop of TVET programme is carried out starting from strengthening collaboration with industries, developing curriculum-based industry needed, the developed infrastructure, and increased the human resources capabilities. Compliance with the industries is the essential key to link and match between human resource and industries need

Keywords
Technical Education, Vocational Education Training, Industries need

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/eDYgvjunN3Aw

Corresponding Author
Fitria Yulistiani

Institutions
a) Chemical Engineering Department, Politeknik Negeri Bandung, Kotak Pos 1234, Bandung, 40012, Indonesia
*fitria.yulistiani[at]polban.ac.id
b) Energy Conversion Engineering Department, Politeknik Negeri Bandung, Kotak Pos 1234, Bandung, 40012, Indonesia

Abstract
Biomass gasification technology has been developed in Indonesia in the last 30 years. During those years, this technology has become one of the choices as a decentralized power plant for remote area. However, the use of synthetic gas directly on diesel engine and steam turbine for electricity generation has a relatively low efficiency. On the other hand, synthetic gas can be used as raw material for Fischer Tropsch (FT) process, a process for manufacturing synthetic diesel and gasoline in high temperature. Because of its high temperature, the exhaust heat can still be used for steam power plant. This paper consists of a study for synthetic gas production from corncob-s gasification which then can be used as FT process-s raw material. Product-s economic level is compared with conventional process. Previous studies show that gasifier optimal temperature is between 800 to 1,000oC. Simulation shows that this approach can produce FT fuel (diesel oil equivalent) 58 million litres per year and electricity 400 GWh per year. With raw material capacity of 300,000 tonnes/year, calculated FT fuel production cost is 6,569 IDR/liter and electricity production cost are 245 IDR/kWh (about 22% of PLN-s average tariffs 1,123 IDR/kWh).

Keywords
optimal process; biomass gasification; Fischer Tropsch Synthesis; electric power; fuel

Topic
Chemical Engineering

Link: https://ifory.id/abstract/yf4JwDkqg9Cb

Corresponding Author
Johan Reimon Batmetan

Institutions
a) Information Technology and Communication education department, Universitas Negeri Manado, Tondano 95618, Indonesia
b) Information Technology and Communication education department, Universitas Negeri Manado, Tondano 95618, Indonesia
* john.reimon[at]unima.ac.id

Abstract
Techno-Entrepreneurship becomes an important part of higher education based on information technology. This is useful to enhance the spirit of entrepreneurship, the ability to read opportunities and build information technology-based businesses. this study aims to examine the appropriate techno-entrepreneurship learning model in higher education. The research method used is action research with practice using lean canvas models for business models and design sprint method to build product prototypes. The results of this study show how to use practice and tutorials, students can create the right business model and be able to make a prototype of a digital product that is good in implementing business ideas. The conclusion obtained in this study is that techno-entrepreneurship is very appropriate to use lean canvas to build business models and more efficiently use sprint designs to build prototypes of digital products. This model is highly recommended for entrepreneurship learning in higher education.

Keywords
techno-entrepreneurship, lean canvas, design sprint, higher education, students

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/3LHEAcnXKPem

Corresponding Author
Muh Abdul Latif

Institutions
Universitas Pendidikan Indonesia
Jln. Setiabudhi No. 229, Bandung Indonesia

*muh.abdul[at]student.upi.edu

Abstract
This study aims to identify the implementation of technology in interactive learning environment. Systematic Literature Review (SLR) was used in this study by collecting all of the journals relevant published since 2014 to 2019. The result of this study show that the interactive learning environment in the current era uses a lot of applied technologies, such as video games, interactive games, mobile learning, augmented reality and social networks. The applied technology was equipped with features in the form of audio, visual, video, animation and navigation panel. Other features used in the form of sophisticated sensors and various of media produce interesting dimensions, so we can feel the space in the world of dimensions. This media supports interactive learning in accordance with the demands of the current era, especially in technological and vocational education as a simulation medium.

Keywords
technology; interactive learning environment; technological and vocational education

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/cjL76FkRfJZz

Corresponding Author
Yani Achdiani

Institutions
Universitas Pendidikan Indonesia

Abstract
The purpose of this study was to determine student satisfaction in using digital story telling applications in batik learning in Vocational High Schools (SMK) in the context of the Technology Acceptance Model (TAM). The data collection process was carried out for 82 students at the Vocational High School of Batik who had previously used the digital story telling application. The data collection instrument was a questionnaire that used a Likert scale to measure aspects of student satisfaction with digital story telling applications. The results showed that student satisfaction with the use of digital applications is seen in the following indicators: the application used is very pleasant, can work well, looks good, very necessary, and can help students to get complete information especially about the philosophical aspects of batik motifs from various areas. This digital story telling application is a narration that is equipped with visual batik motifs combined with animation and audio technology that can help students fully understand the value of batik local wisdom. Overall aspects of student satisfaction in using digital story telling applications are in the good category. These results show that students are satisfied using this application and can help understand the local wisdom value of batik which is very helpful for instilling student awareness about the cultural heritage of Indonesian Nation.

Keywords
Technology; Digital; Story Telling; Application

Topic
New Technologies in Education

Link: https://ifory.id/abstract/nXHxg3RkTLhv

Corresponding Author
YULDA .

Institutions
Indonesia University of Education, Jl. Dr. Setiabudhi No. 229, Bandung, West Java, 40154, Indonesia

Abstract
The development of new technologies has allowed printed books to naturally evolve into multimedia ebook. Multimedia ebook have become increasingly popular in computer based education across a range of subject domains and education levels. Based on data between 2015-2018, for young users (18 until 34 years) smartphone ownership rise from 39 percent to 66 percent in Indonesia. Therefore, this paper has been methoding a literature review to analysis the application or software used for multimedia ebook as a digital based learning media. The articles reviewed were 30 articles from 2014 until 2019. Overall, this review provides an appropriate reference for further research by identifying research needs in technology multimedia ebook.

Keywords
ebook, multimedia ebook, digital media, technology

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/KHjTWU4hp2Lz

Corresponding Author
Eka Rima Prasetya

Institutions
Technical and vocational education
Universitas Pendidikan Indonesia

Abstract
This study aims to conduct a bibliometric about technopreneurship in the form of how many do research on technopreneurship, what studies are discussed the most in each year, the country that conducts the most research. This study uses data from 2017-2019 with a total of 800 articles. The results of this study are ICT skills, moderating effects, relationships, teacher education development, innovation. Indonesia is the country that has the most research on technopreneurship.

Keywords
Bibliometrics study, Technopreneurship, enterpreneurship

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/RvqANYyfE9pj

Corresponding Author
Dudi Nasrudin Usman

Institutions
Department Of Mining Engineering, Faculty of Technology, Bandung Islamic University

Abstract
This research was carried out in the Mount Mandalawangi region of West Java Province. The research objective is to explore the potential sources of springs in supporting the development of the region so as to encourage the economic potential of the community. The methodology used was geological mapping, spatial mapping, mapping of socio-economic conditions, mapping of water demand levels, which were evaluated using the Terrain Genetic Unit method. The area around Mount Mandalawangi is a relatively fertile area has ±36 points of springs, the discharge ranges from 0.00003 m3/sec-0.587 ltr/sec. The dominant lithology is the Mandalawangi (Qmm) Mountain consisting of glass tuffs containing pumice, and lava composed of pyroxene andesite to basalt. The results of the study using the Terrain Genetics Unit method there are 3 zones that have the potential to develop springs based on the region, Andesite Plateau, Corrugated Hills of Lapili Volcano and Corrugated Hills of Tuff Breccia Interferenc. The analysis is that regional development can be planned to the maximum by prioritizing the source of spring with a note that there needs to be an arrangement for the source of existing springs.

Keywords
Mount Mandalawangi, Terrain Genetics Unit, East Bandung and Spring Resources.

Topic
Mining Engineering

Link: https://ifory.id/abstract/bENBHUVqPR4y

Corresponding Author
Bandiyah Sri Aprillia

Institutions
Telkom University

Abstract
Any power generated by renewable electricity sources must be used immediately, or it will be wasted. In this research, battery cell test will be carried out using the Galvani cell theory and the electrolysis cell approach. Salt (NaCl) is an ingredient that can easily be found. Salt water is an element that is easy to electrolyze even though it uses a small current input. Salt water can also collect electricity in certain periods.This study discusses the use of salt or NaCl (Sodium Chloride) which will be combined with copper electrodes (Cu), carbon (C) and also aluminum (Al) as a storage of power generated from renewable energy sources. The results of the experimental analysis are how much power can be stored by salt water combined with magnesium and iron.

Keywords
Salt water, electrolysis cell, Electrical power storage

Topic
Electrical Engineering

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

Corresponding Author
Isna Yuliastuti

Institutions
1. Department of Mathematics Education, Postgraduate Program, University of Jambi, Indonesia

2. Department of Physics Education, Faculty of Tarbiyah and Teacher Training, Islamic University of Sulthan Thaha Saifuddin Jambi, Indonesia

Abstract
This study aims to describe the ability of teachers to implement realistic mathematic approach (RMA) learning in Public Middle School Jambi City. This research uses a qualitative paradigm. The subjects of this study were Mathematics teachers in Jambi City who were members of the Mathematics Subjects (MGMP) group of 25 teachers. Data collection is done through documentation and interview techniques. Data analysis was carried out on the learning implementation plan that had been developed by the teacher. Based on the data obtained, it is known that 19 teachers or around 76% have not implemented RMA, and 6 teachers 24% have implemented RMA in schools. In addition, it is also known that 2 teachers (33%) are able to develop learning plans with the RMA approach with the category of "good", 3 teachers (50%) have abilities in the "medium" category and 1 teacher (16%) with the category "low". Therefore, training/workshops need to be carried out to improve the ability of teachers in implementing RMA learning in schools.

Keywords
Teachers ability, realistic mathematic approach (RMA), lesson plan

Topic
Basic Science in Engineering Education

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

Corresponding Author
Ridwan Adam M Noor

Institutions
1,2 Department of mechanical engineering education, Faculty of education and vocational technology, Indonesian University of Education. Jl. Dr. Setiabudhi No. 207
Bandung 40391 West Java Indonesia
a) Writer Corresponden: adam[at]upi.edu

Abstract
Abstract. The aim of this research is to know the calculation of resin requirements which is used, the relative velocity of resin and filling time in body construction process of electric prototype vehicle which used carbon fibre material using vacuum infusion method. In making this vehicle body is using carbon fibre in order to have light in weight, strong and safe to fullfil the regulation or rule Shell Eco-Marathon (SEM).This light in weight vehicle is to increase power to weight ratio. So, it can be increase the efficiency of the fuel. The body of this vehicle has been included in Shell Eco-Marathon Asia which held in Singapore 2017. Based on the ideal calculation result resin in electric prototype that used carbon fibre using vacuum infusion method has obtained as much resin value as needed (RC) 3.83535 Kg, the relative velocity of resin (V) 0,005 m2/s,and filling time (t) for about 10,4 minutes and total weight body is 8 Kg.

Keywords
Resin necessary (RC), relative velocity of resin (V), filling time (t)

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/8kVTP34LXbFB

Corresponding Author
Indah Nurjanah

Institutions
Vocational and Technology Education Study Program of Post Graduates Schools, Universitas Pendidikan Indonesia (UPI), Jl. DR. Setiabudi No.229, Isola, Kec. Sukasari, Kota Bandung, Jawa Barat 40154, Indonesia
*indah_nurjanah[at]upi.edu

Abstract
Indonesia has a cultural heritage namely batik, where this heritage must be preserved in order not to become extinct. The purpose of this study is to apply the technology for making batik motif designs in the batik industry. The use of technology in batik designs is expected to facilitate the making of motif designs and give the quality of a craftsman more creative. And could prepare will challange industry era 4.0. the technology used is jBatik is software for making batik motif with fractal principles. Method writed paper with analysis software jBatik that already available online. The findings of this study indicate that the process of making batik motif designs is faster and more effective. This software has two types that produce 2D and 3D motifs depending on the parameters. The use of this software is to make a motif with the principle of repetition or fractal where the motive is only made once and can be repeated as needed. besides, it can directly provide isen-isen and colors for motifs.

Keywords
application, software jBatik , batik product

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/DEQrWuhYwVa4

Corresponding Author
Hedi Hedi

Institutions
Politeknik Negeri Bandung
Jl. Geger kalong Hilir, Ciwaruga
Bandung 40559, Indonesia

Abstract
The body fat content if can be predicted high or low, can be used as a reference to see the level of health. The higher the fat content, the greater the risk of various diseases. In this paper will propose modeling fat content that depends on 13 input variable are age, weight, height, neck, chest, abdomen, hip, thigh, knee, ankle, biceps, forearm, and wrist, The problem faced in this model is that between variables are correlated (multicollinearity). The objective of this paper is determine a fit model for predicted body fat percentage estimates.To overcome these problems applied method of principal component regression (PCR) and partial least square regression (PLSR). By applying the akaike-s information criterion (AIC), mean square error (MSE) and mean absolute percentage error (MAPE), the PLSR model was the method of choice for modeling body fat percentage estimates.

Keywords
Body fat, Modeling, Multicollinearity, PCR, PLSR

Topic
Basic Science in Engineering Education

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

Corresponding Author
Yeti Nurfendah

Institutions
Technology and Vocational Education
Yogyakarta State University
Jl. Colombo No.1, Karang Malang, Caturtunggal, Kec. Depok, Kabupaten Sleman, Daerah Istimewa Yogyakarta 55281
a) yetinurfendah.2018[at]student.uny.ac.id
b) hermin[at]uny.ac.id

Abstract
Vocational schools in the implementation of education must be managed with effective management that can develop the potential of students, develop abilities and shape knowledge, skills, mental and work attitude that is capable, creative, independent, and responsible requires a strategy. The purpose of this research to enable the alignment of learning in vocational schools with the industry. This research method was conducted with a qualitative approach. The results showed that, the needs of knowledge, skills, work attitude and mental work and habits in the school environment should be aligned with the actual situation. In addition, the completeness of facilities and infrastructure that is well adapted to the industry. Then the development of the curriculum that is run by the vocational school, its manufacture must be validated and verified by the industry. Where the validation and verification instruments tailored to the demands of the industry. While school-related measures taken on improving the quality of competency that focuses on attitude, attitude, character familiarized work early in order to adjust to the situation in the industry / world of work.

Keywords
Vocational Education, Curriculum Development, Industrial Supplies

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/2dcLVzF6aTpq

Corresponding Author
Marlina, Dr. M.Si Nina

Institutions
Universitas Pendidikan Indonesia
ninamarlina1986[at]gmail.com

Abstract
The assessment instrument product of macrame technique in textile craft courses is an instrument that is arranged systematically to determine product accuracy based on established criteria and indicators. The purpose of this study was to make a assessment instrument for evaluating macrame technique products in textile craft courses that can be used as a reference by educators in assessing student work in the form products of macrame technique. Quantitative research methods with research and development (R&D) models through preliminary study stages, the design products of macrame technique, production and manufacturing of macrame product valuation tools, validation, revision, and analysis. The results of the validation stage products of macrame technique valuation the assessment instrument show that the "Very Eligible" is used, judging by the evaluation given by the evaluation experts and material experts with an average percentage given of 100% of the evaluation experts and 98, 21% of material experts include six indicators, namely types of macrame motifs, function of macrame products, design elements, design principles, use of materials, and completion techniques. The assessment instrument product of macrame technique tha t have been made can be used as a reference in assessing student work in the form product of macrame technique.

Keywords
assessment instrument, product of macrame technique

Topic
Research and Development in Engineering Education

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

Corresponding Author
Syaeful Hilman Supratman

Institutions
School of Electrical Engineering, Telkom University (1)(2)(3)
Jalan Telekomunikasi 01, Bandung 40257, Indonesia
syaeful.hilman[at]gmail.com (1), ritamagdalena[at]telkomuniversity.ac.id (2), sofiasaidahsfi[at]telkomuniversity.ac.id (3)

Abstract
The land is a crucial part that cannot be separated from human life and other living things. Nowadays, the function of many areas of land has been changing. This bears the intention of writers to discussed the problem which occurs in the classification of land cover to assist the government in deciding the use of some land areas in Bogor. This research used the Gray Level Co-Occurrence Matrix (GLCM) Method as a feature extraction method and K-Nearest Neighbor (k-NN) method for the process of classifying. The test result shows that this method can generate the best accuracy 85,8% when using 0 orientation parameter, quantization level = 8, the feature of statistical is contrast, correlation, energy, homogeneity, entropy, and when we used Euclidean type of k-NN with k = 3.

Keywords
Land coverage; GLCM; K-NN; euclidean

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/fX6W9JZpAKR3

Corresponding Author
Dea Rachma Maulida

Institutions
Departemen Pendidikan Teknik Arsitektur, Fakultas Pendidikan Teknologi dan Kejuruan, Universitas Pendidikan Indonesia,

Abstract
This research aims to determine student-s understanding level after learning by using animation and powerpoint media on construction and utility lesson in SMK 7 Baleendah in competency Modeling and Building Information on 11th Grade. The study design used Pre-experimental design of One Group Pretest-posttest. The research set XI DPIB 1 as an experimental 1 using animation and XI DPIB 2 as an experimental 2 using powerpoint. Beside the pretest and posttest, the student were given the questionnaire about the evaluation of media used. The results of the questionnaire respondents fall into the category of strongly agree. The category confirms that the use of animated learning media and powerpoints are necessary in the learning process of the material understanding building pieces. While the data which are gathered from the results of the pretest and posttest are concluded that the difference in the increase of students understanding are not significant after using animation learning media and powerpoint learning media on Construction Construction and Utility subjects.

Keywords
Animation, Powerpoint, Student-s Undestanding.

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/76dLaXfVkt2q

Corresponding Author
Trias Megayanti

Institutions
Departemen Pendidikan Teknik Arsitektur - Universitas Pendidikan Indonesia

Abstract
This study compares Peer Tutoring and Learning Together methods in achieving score and activeness in Engineering Drwaing subject. The population of this research is the students of class X DPIB in SMKN 5 Bandung while the samples consist of two classes that are selected using purposive sampling technique. The research instruments are observation sheet of student activeness and drawing skills assessment. After implementing Peer Tutoring learning method in class X DPIB 1, the students get 86.81 as the average score in drawing result and they are more active in some indicators such as Drawing activities, Motor activities, Mental activities, and Emotional activities. Meanwhile after implementing Learning Together learning method in class X DPIB 4, the students get 74.23 as the average score in drawing result and they are more active in some indicators such as Visual activities, Oral activities, Listening activities, and Writing activities. This research data are analyzed by statistics Independent T-test. The analysis results shows that there are differences between the aspects of activeness and psychomotor learning outcomes of the students who use Peer Tutoring learning method and the students who use Learning Together learning method in the Engineering Drawing subjects.

Keywords
Activeness, Psychomotor Learning Outcomes, Peer Tutoring, Learning Together

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/fgwjqkv7nFpB