Indonesia Conference Directory

Corresponding Author
Maulida Dewi Firdaus Abdullah

Institutions
Politeknik Negeri Bandung

Abstract
This study aims to examine the factors that influence corporate risk disclosure consisting of the type of company, company size and profitability and the impact of corporate risk disclosure on the firm value. Every company has a different risk. Investors need to know the risks faced by the company and what strategies are used to deal with these risks. Companies listed on the ISSI are required to conduct their business based on sharia principles. Risk disclosure is a form of applying sharia principles in business ethics. The population was 265 non financial companies listed on ISSI and published the annual report for 2015 to 2017. The sample of 73 companies was taken by applying Slovin formula. Data analysis techniques used was path analysis and multiple group analysis. The results show that type of company, company size, and profitability have significant impact on corporate risk disclosure, and corporate risk disclosure has a positive and significant impact on firm value. The results of this research can be used as a consideration for the company management to increase corporate risk disclosures in the annual report as corporate risk disclosures can be a positive signal to encourage the increase in corporate value.

Keywords
type of company, company size, profitability, corporate risk disclosure, firm value

Topic
Industrial Engineering

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

Corresponding Author
Fachrizal Cesar Putra

Institutions
1 Mechanical Engineering Department, Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

b)Suhardjono[at]me.its.ac.id

Abstract
This research aims to find out how big the effect of the overlap ratio and grit size silicon carbide wheel grinder to the vibration amplitude and surface roughness when grinding process and the correlation between the vibration amplitude and surface roughness. This research uses the material hardened tool steel OCR12VM. This research using the surface grinding machine KGS818AH model and this research using a variation of process parameters namely 5 variations on the overlap ratio, 4 variations on grit size silicon carbide wheel grinder, 2 variations in the depth of the cut and this research using constant parameters namely constant spindle speed and constant longitudinal feed. The selection the type of abrasive and the selection process parameters (overlap ratio and grit size silicon carbide wheel grinder) can give a great impact on the increased vibration amplitude and surface roughness on material OCR12VM. The conclusion of this study is with increasing overlap ratio, the vibration amplitude and surface roughness will decrease and the finer the grit size silicon carbide wheel grinder, the vibration amplitude and surface roughness will be lower.

Keywords
Grit size wheel grinder, Overlap Ratio, Vibration amplitude, Surface roughness,

Topic
Industrial Engineering

Link: https://ifory.id/abstract/YgRafLt3CymQ

Corresponding Author
Harwati Harwati

Institutions
Universitas Islam Indonesia

Abstract
This research basically aims to implement green lean manufacturing concept in a small scale industry. A green lean manufacturing is reached by energy saving and emission reduction. Current environmental Value Stream Mapping (VSM) is developed for Batik manufacturing process to identify wastes and bottleneck processes. Traditional process of producing batik raises several problems such as long cycle time and it emerges energy waste, excessive water consumption, emissions from combustion that can damage the environment. Based on all waste that was identified, solutions are suggested to eliminate the energy and emission produced. A future environmental VSM is designed, simulated, and compared with current VSM. The solutions decrease 3.9% of cycle time, 14% of energy consumption, and 63% of emission. This result showed that the solutions are applicable to be implemented in that small scale industry

Keywords
Green Lean Manufacturing, Environmental Waste, VSM, Process Activity Mapping, Cycle Time, emission, energy

Topic
Industrial Engineering

Link: https://ifory.id/abstract/bvgkUMt6YELQ

Corresponding Author
iyan andriana

Institutions
Universitas Komputer Indonesia

Abstract
The researchs purpose was to measure the relationship of workload and motivation to employees performance and the effect of motivation on employees performance, workload on employees performance, workload and motivation on employees performance. This research was a quantitative approach with the methods used such as observation, interviews and questionnaires and data analysis was written using path analysis. Path analysis is a technique for analyzing causal relationships that occur in multiple regression. Relationship between workload and motivation on employees performance is 0.49. The effect of motivation on employees performance is significant at 30.02%, but the influence of workload on performance is non-significant at 5.48%. workload and motivation on employees performance is significant at 35.50%. Based on these results, the workload and motivation have a strong and significant relationship. Altough workload has a non-significant effect on employees performance partially, the workload and motivation have a significant effect on employees performance in medical manufacturing.

Keywords
Ergonomic

Topic
Industrial Engineering

Link: https://ifory.id/abstract/A38qGLfTRc2V

Corresponding Author
Imam Djati Widodo

Institutions
1 Industrial Engineering Department, Universitas Islam Indonesia, Yogyakarta, indonesia
2 Industrial Engineering Department, Universitas Islam Indonesia, Yogyakarta, Indonesia,
3 Industrial Engineering Department, Universitas Islam Indonesia, Yogyakarta, Indonesia

Abstract
The quality of the electrical cable can be determined by resistance of insulator and conductor. The higher the resistance of the insulator and the lower the resistance of the conductor, the higher the quality of the cable. NYM 2x1.5 mm2 cable produced by Corporate X has an isolator resistance of 84.25 Ω and conductor resistance of 11.976 Ω. Even though the products meets Indonesia National Standard (SNI), but to win the competition, the company needs to improve the quality of their products with competitive prices. There are some factors influencing the resistance of insulators and conductor. They are core extruder speed (A), non-core extruder speed (B), cooling water temperature (C), PVC melting temperature (C), cabling speed (D), copper elongation (E), PVC density (F) and human error (F). In this research, design of experiment, based on Taguchi method, is used to improve cable resistance. Because of having two responses, the optimization process uses the TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) method. The result showed that the combination of levels of these factors could produce average insulator resistance of 95.70 Ω (increasing by 8.90 Ω), and the average resistance of the conductor 11.908 Ω (decreases down by 0.057 Ω). This optimal condition was obtained by combining the levels of factor A1 B1 C1 D2 E2 F1 G1, i.e. the system works at 140 rpm cabling speed, non core extruder speed 2.9 m/s, core extruder speed 2.9 m/s, cooling water temperature 20 0C, copper elongation 150 - 250, temperature for melting PVC 160 0C-165 0C and PVC density 154,95-155 kg/m3. Sensitivity analysis to accommodate the dynamic weighting of product quality attributes indicated that the changes in the order of priority attribute weights on a formal scale system used to convert linguistic forms into fuzzy numbers were not sensitive to optimal factor level combinations

Keywords
Factor Level Combination, Insulator and Conductor Resistance, Sensitivity Analysis, Taguchi, TOPSIS

Topic
Industrial Engineering

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

Corresponding Author
I.Made Aryantha Anthara

Institutions
Industrial Engineering Departement
Universitas Komputer Indonesia

Abstract
This research is motivated by the phenomenon of selling three brands of coffee in one of the stalls in the Garut area. The purpose of this research is to find out the opportunity to move from a coffee brand to another coffee brand within a certain period of time and then make a prediction of the chances of further coffee transfer until the steady state condition is obtained. The method to be used in this study is Markov Theory in which the time span used is the number of sales of each brand of coffee within two months. From the observations, there are three coffee brands that are most in demand by consumers, namely ABC coffee, White Luwak Coffee and Kapal Api Mix coffee. From the results of the analysis carried out, steady state conditions from the sale of the three coffee brands were obtained at the sixth month with sales probability values for ABC coffee, White Luwak coffee and Kapal Api Mix coffee each 31.28 %, 21.66% and 47.06%. If seen from the results of the research that has been obtained, it can be concluded that the probability of selling the three coffee brands is quite even and this can be a consideration for sellers to be able to supply the three coffee brands more than the other brands so will increase the sales of the three coffee brands

Keywords
Markov Theory, Probability Matriks, Steady State

Topic
Industrial Engineering

Link: https://ifory.id/abstract/mh3YNbyzHBQJ

Corresponding Author
Ayu Fusva Indah Manik

Institutions
Bandung State Polytechnic

Abstract
Indonesian Banking industry has evolved significantly as indicated by the increasing of the number of its customers as well as the growth of the public savings. Offering an excellent service experience that enable to satisfy and make loyal customers are key for survival of any Islamic banks. Although having satisfied and loyal customer is pivotal, at present lack of studies have paid attention to assess these topics in Islamic banking context. This study is conducted to evaluate the effect of service quality, economic, and image in determining customer satisfaction and loyalty towards Islamic Bank.The data for this study was collected through a questionnaire distributed to 280 customers of Islamic banks in two cities, Medan and Bandung. This study uses Structural Equation Model. The data analysis results shows that service quality (measured by assurance, empathy, and responsiveness) is an important determinant of customer satisfaction and loyalty. Similarly, economics and image factor is significantly impact on satisfaction but not significantly in loyalty. From managerial perspective, this study provides a guidance for Islamic bank managers that besides providing a high service quality, they need to be efficient as well as having a favorable image as important strategy for advancing their banks competitive advantage.

Keywords
Service Quality, Economic, Image, Customer Experience, Customer Satisfaction and Loyalty

Topic
Industrial Engineering

Link: https://ifory.id/abstract/JydMQH8LC92U

Corresponding Author
M Fikri Perdana

Institutions
Industrial Engineering Department
Faculty of Industrial Technology
Islamic University of Indonesia, Yogyakarta Indonesia

Abstract
Abstract. English is the one of the most widely spoken languages in the world and is used as an international language for communication. The importance of English proficiency is the primary reason for some people to be motivated in English learning. Such learning process thus requires a learning facility to help achieve the targeted learning goals. One of the English learning facilities is board game design, which has been developed, in the previous study. However, the usability of this board game design as media in teaching-learning process remains unproven since it needs a reliable testing. On this basis, this study aims to analyze the usability of educational board game design developed based on effectiveness, efficiency, and satisfaction parameter. Usability test was conducted using performance measurement method and the system of usability scale questionnaire was distributed to more than 30 respondents of elementary education level at the fourth, fifth, and sixth grade. Experimental study was done in the elementary school to collect the required data. Statistical analysis was applied to test the hypothesis. Result of this study shows that the usability of developed educational board game design is valid for the learning process of elementary school students at 5% significance level with usability level of 85% for effectiveness, 83% for efficiency, and 71% for satisfaction.

Keywords
usability, performance measurment, SUS questionnaire, board game

Topic
Industrial Engineering

Link: https://ifory.id/abstract/rjxJqYMB72Zp

Corresponding Author
Wahyu susihono

Institutions
1,2 Industrial Engineering Department, Engineering Faculty, University of Sultan Ageng Tirtayasa, Banten, Indonesia
3 Electrical Engineering Department, Engineering Faculty, University of Sultan Ageng Tirtayasa, Banten, Indonesia

Abstract
Companies that already have a halal product certificate have a minimum certificate of Halal Product Guarantee status by criterion B. However, up to now not many companies have obtained it due to the incompleteness of the Halal Assurance System (SJH) manual document. Gipang Tiga Bunda cake industry is one of companies that has been certified halal by LPPOM MUI Banten Province, but the SJH Status certificate has not been given to the company. This condition is due to the fact that the company has not yet completed the HAS-23000 document specifically for the overall fulfillment of eleven criteria for the Halal Assurance System (HAS 23000: 1) , Policies and Procedures (HAS 23000: 2). This study aims to determine the improvement in the implementation of HAS-23000 in the Gipang Tiga Bunda cake industry, so that finally an intervention model can be found that is in accordance with the abilities, abilities and limitations of humans working in the cake processing industry. This research method is in the form of exploratory design. Observations were carried out directly and carried out deep interviews with company management or employee representatives who worked for at least 3 years in a row. The results showed that ergonomic interventions can improve the implementation of the criteria a) the mechanism for establishing a halal management team, b) preparing halal policies, c) scheduling training and education, d) the mechanism for using production facilities, e) internal audit activities and f) review activities management. Ergonomics intervention is able to make humans as a system unit in implementing HAS-23000 implementation.

Keywords
Ergonomics intervention, HAS-23000, Halal, processing industry

Topic
Industrial Engineering

Link: https://ifory.id/abstract/MQVAFwm3EuGh

Corresponding Author
Julian Robecca

Institutions
Universitas Komputer Indonesia

Abstract
The purpose of this study is to design bags as trash bags used by mountain climbers who usually use plastic bags to store their trash. This garbage bag is called trash click. To ensure that the trash click as a garbage bag produced will meet the needs of mountain climbers, product design is carried out using the concept of Quality Function Deployment (QFD) in the form of a house shaped matrix called House of Quality (HoQ). This matrix changes the customers voice directly to the specifications of the bag being produced. From the distribution of questionnaires obtained 30 statements which are the needs of climbers. Of these 30 statements, twelve technical characteristics were established in response to the needs of climbers that would affect the design of the trash click specification as a garbage bag. The trash click design that is made refers to the technical characteristics produced so that the specifications of the trash click are in accordance with the needs of mountain climbers.

Keywords
Garbage bag, voice of customer, HoQ

Topic
Industrial Engineering

Link: https://ifory.id/abstract/n2crCBfPTgKA

Corresponding Author
Caesario Isak Cornelis

Institutions
a) Department of Industrial Engineering
Universitas Indonesia
Depok, Indonesia
caesarioisak[at]gmail.com
b) Department of Industrial Engineering
Universitas Indonesia
Depok, Indonesia
Farizal[at]eng.ui.ac.id

Abstract
Natural gas as source of energy is more desirable than other fosil fuel such as coal and oil because of environmental advantage. A big issue comes from the decision of new power plant, whether using natural gas or coal as source of energy. In area such as South East Asia, natural gas prices is higher than coal, hindering such uses. In order to make natural gas power plant more viable, some steps must be taken, such as optimization. This study will optimize the location of 5 power plant and pipeline route between 11 location and 2 natural gas sources, so the weighted length is minimum. Thus, a mathematical model developed to solve the problem, which is a Mixed Integer Nonlinear Problem (MINLP). Two step optimization used to obtain solution. The first step is used to obtaion optimal location and pipeline route, the second step is used to obtain optimal pipeline diameter and compressor configuration. A weighting element added to the pipeline length to accomodate the difference of pipeline diameter. Six scenarios are made in this study to give a different location and routing possibility regarding possible future scenarios.

Keywords
Optimization, Natural Gas, MINLP, Location Selection

Topic
Industrial Engineering

Link: https://ifory.id/abstract/jPCx8cRwKGQT

Corresponding Author
Muhammad Hafizia Ramadhan

Institutions
Industrial Engineering Department
Faculty of Industrial Technology
Islamic University of Indonesia Yogyakarta Indonesia

Abstract
Website constitutes a pivotal element in an academic institution. It is useful to provide academic information for stakeholder requires like final scores, academic calendar, scholarship, student competition, etc. This paper presents an investigation about the level of usability of the website at the selected faculty of the university in Indonesia on basis 5 dimensions. They are learnability, efficiency, memorability, error, and satisfaction. It is noteworthy for faculty should supply the information in detail and accurately but few of a faculty website in the certain university sometimes experiencing matters for the user. Thus, it is crucial to do the analysis of the usability of the website at the faculty level. A qualitative study was conducted by distributing some Likert-scale¬ questionnaire to stakeholders that consist of student, academic staff, student-s parents, and lecturer. The questionnaire contains 25 questions divided into five groups of elements by referring five dimensions above which each group has 5 questions or statements. The non-parametric statistic is conducted to test the hypothesis. The result of this study shows that the website of the selected faculty is classified into a moderate level with 68% of usability grade. Thus, this study recommends to improve the website in the layout of menu, content, add some features to easier for login so as it will become a higher usability level.

Keywords
website, usability, layout of menu, content of web, features.

Topic
Industrial Engineering

Link: https://ifory.id/abstract/LeT7pwW3HARE

Corresponding Author
Phatraporn Chain

Institutions
a,b) Supply Chain and Logistics System Research Unit, Department of Industrial Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand

Abstract
Nowadays, the number of cattle farms have been increasing and spreading over the production regions. The aim of this paper is to find the appropriate locations of regional food distribution center in the northeastern of Thailand for distributing food to cattle farms. The case study was based on data from 421 standard cattle farms from all over northeastern of Thailand. Hierarchical agglomerative clustering which is a statistical technique for sorting dataset into homogeneous groups was applied to compute a range of possible clusters. After that, centroid method was used to find the location of food distribution center. The result showed that two food distribution centers are suitable for distribution of food to the cattle farms.

Keywords
Hierarchical agglomerative cluster analysis, cattle farm, distribution center, Location Decision Problem

Topic
Industrial Engineering

Link: https://ifory.id/abstract/M6X2mDxKQdgT

Corresponding Author
purwanto purwanto

Institutions
Product Design, Faculty of Architecture and Design
Duta Wacana Christian University
Jl. dr. Wahidin Sudirohusodo 5-25 Yogyakarta

Abstract
Play is one of the right stimulations for children to stimulate childrens thinking power, to empower emotional, social, and physical aspects. There are several types of games that shape the skills and creativity of children, one of which is a game of compiling puzzles, because playing puzzles can coordinate the movements of the eyes and hands of children or fingers movements, with it without them knowing that the fine motoric skills of the child continue to be trained and developing. When children play puzzles, children can practice recognizing shapes and thinking about how they arrange puzzles to form shapes. In this research activity, there were problems encountered in the Amongsiwi play group, Panggungharjo village, Bantul, namely the lack of availability of play and creative media in the form of puzzles that could support the development of fine motor skills of children. In this play group, in their activities every Friday there is a special time to play and be creative. For this reason, the purpose of this research is to create a play and creative media innovation from local materials in the form of puzzle cendani bamboo that is feasible, safe and environmentally friendly for preschoolers. The method used in this activity is development (R&D) by collecting data, observing and analyzing problems, product design and product testing (testing on children). In collecting data using observations, interviews, documentation to be analyzed in a quantitative descriptive manner. The results of the study indicate that the play and creative media that are designed can be accepted by children with a feasibility level of 78,4%, this means that the resulting media is suitable for use. Meanwhile the level of childrens ability to use / compile a puzzle to form a shape based on observations of 76% of a total of 25 children can already be in the form of tangible shapes such as animals, cars or robots.

Keywords
bamboo, preschool, puzzle

Topic
Industrial Engineering

Link: https://ifory.id/abstract/4rYPNRhW6BHj

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
Ade Irman

Institutions
a) Industrial Engineering, University of Sultan Ageng Tirtayasa, Indonesia
*irman[at]untirta.ac.id
b) Mechanical Engineering, University of Sultan Ageng Tirtayasa, Indonesia
**dhimas[at]untirta.ac.id
c) Industrial Engineering, University of Sultan Ageng Tirtayasa, Indonesia
***nustin_md[at]untirta.ac.id
d) Industrial Engineering, University of Sultan Ageng Tirtayasa, Indonesia
****arliannur[at]gmail.com
e) Industrial Engineering, University of Sultan Ageng Tirtayasa, Indonesia
*****taniaero.te[at]gmail.com

Abstract
Traffic jam is an everyday problem which appear in almost of big city in the world. The cities without integrated public transport will have more problem in their daily traffic transportation, such as heavy traffic jam, high air pollution, etc. Serang City as the capital city of Banten-Indonesia has the same traffic problem, without a good integrated public transport, makes the problem of traffic transportation in Serang City becomes heavier. Virtual traffic simulation is known as powerful tool for generating alternative solution to minimize the traffic problems. This research use PTV Vissim as virtual traffic simulation software to minimize the traffic problems in Serang City. Serang City has 6 (six) sub-district area, there are Cipocok, Curug, Kasemen, Serang, Taktakan, and Walantaka. This research focus on vehicles traffic only in area of sub-district Serang with 5 main traffic lights crossroad. PTV Vissim uses to simulate the 5 of the main crossroads and find the average of the existing vehicles queue length in rush hour (morning and afternoon time). Trial and error operations such as traffic lights timing modification and routing modification use to generate alternative solutions for minimizing vehicles queue length as traffic performance in this research. The result of this research has found the rush hour in Serang City occured at 06.00-10.00 and 14.01-18.00 (UTC +07:00), and the routing modification in Kebon Jahe can reduce the average of queue length for 53%.

Keywords
Virtual Traffic Simulation;PTV Vissim; Indonesian City

Topic
Industrial Engineering

Link: https://ifory.id/abstract/YGeWTcjx8gUp

Corresponding Author
Renanto Pandu Wirawan

Institutions
Department of Industrial Engineering, Universitas Indonesia, Depok, 16424, Indonesia

Abstract
Indonesia is one of the biggest plastic waste production in the world. The government targets to reach 20% for recycling plastic waste in 2019. One alternative to manage plastic waste is using pyrolysis to produce fuel. Pyrolysis is used to degrade the plastic long chain of polymer molecules into smaller molecules. All type of plastic except polyvinyl chloride (PVC) were used in this study to produce fuel. For the purpose, experiment factorial design was used for the optimisation plastic type, residence time, and temperature to maximise the yield of liquid products of the pyrolysis process. In this study 2k factorial design was used for each factor. The result shows that the pyrolysis process used is able to produce diesel like fuel in low temperature.

Keywords
Pyrolysis; Plastic waste; Fuel; Design of Experiment; Factorial Design

Topic
Industrial Engineering

Link: https://ifory.id/abstract/TqM6mRVfvB4u