bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of sugar import policy effects on sugar cane farmer’s income in East Java: A system dynamic approach
Authors: Fudhlaa A F , Rachmawati W , Retnowati D 
Published: March 2021

Abstract
Besides rice, sugar becomes a national strategic agricultural commodity in Indonesia. Until 2019, since local sugar production has not been able to meet national needs, import is required. However, the uncontrolled entry of imported sugars could hit the presence of the local sugar. This can smite particularly the traditional sugar cane farmers who are the backbone of national sugar production. Based on the observation in East Java as a province with the largest sugar production in Indonesia, in recent years, when they are depressed with the increase of living and farming costs, the entry of imported sugar in large volumes will make their conditions worse. This study develops a system dynamics model that can evaluate the impact of sugar import policies on the fluctuations in the welfare of traditional sugar cane farmers in East Java. After the validation process, the result of simulation shows that if there are imported sugars in volume 10% of local productions, sugar cane farmers’ incomes decrease 38% on average per year. When imported sugars reach 60% of local production, sugar cane farmers’ annual income dropped drastically tends to go bankrupt. When there are no imported sugars, the income crept up an average of 4.35% per year. The Model could be used by policy makers as an early warning mechanism on this issue.
Human error probability analysis using Success Likelihood Index Method (SLIM) approach in grinding activities
Authors: Santiasih I , Ratriwardhani R A 
Published: March 2021

Abstract
Grinding activities produced 31% accident cases that occurred repeatedly and had the same cause. Most of them were investigated and were proved to be caused by human error. The study aims to obtain the value of Human Error Probability (HEP), thus, it could be employed as prevention and controlling consideration. HEP value was obtained by finding the value of. Success Likelihood Index (SLI). SLI value could be obtained using questionnaires and Performance Shaping Factor (PSF) assessment which had been filled by expert judgment. The scenarios were developed to predict and reduce the occurrence of human error as applied to Success Likelihood Index Method (SLIM). This research illustrated the factors that affected errors in the grinding process were procedure, fatigue, complexity, training, and experience. The task that contained the highest error value was in the first task (use PPE following predetermined). While the task which included the lowest HEP was task 2 (prepare documents according to pre-defined). As part of efforts to reduce the error probability values grinding process, it recommended reducing the probability of error by increasing the value of PSF, ranging from improved procedures, reduction of fatigue of the workers, the reduction of the complexity of the job, increased training for workers, and increased workers’ qualification through work experience history.
Lean manufacturing with multilevel Value Stream Mapping
Authors: Prasetyawan Y , Ramadhan B A , Salsabila L 
Published: March 2021

Abstract
The lean method is a process that helps the companies to produce more products by minimizing time of the process, capital, and other resources. VSM is a tool which is based on the lean manufacturing that used to identify the current scenario of the process in the company to solve the problems and fix the future scenario. As VSM identifies all the process steps, the value added, and non-value-added activities are analysed using this tool to help see the source of waste and the hidden waste. The existing VSM is limited to explain the production process in general and it is less detailed, so the improvements that made are limited to the level of the production line and not every production process. The purpose of this paper is to develop a dynamic mapping method to enable a more detailed analysis of lean problems by making value stream mapping into several levels (multilevel).
Supply chain network design to adjust with acquisition of competitor: Case study of a cement company in Indonesia
Authors: Setiyawan R B , Pujawan I N , Arvitrida N I 
Published: March 2021

Abstract
In this paper, the problems encountered by the largest market share cement manufacturer in Indonesia after acquiring a competitor is considered. These problems consist of determining the right allocation of production facilities to serve a market, the decision to continue to operate or stop the operation of a grinding and or packing plants, determining the number of clinkers sent from the integrated cement plants to the grinding plants and determining of the amount of cement production in each production facility. This research was conducted with the aim of designing the supply chain network in order to minimize total annualized cost in meeting demand in all marketing areas in Indonesia. The supply chain network is mathematically modelled and the optimal solution is solved using mixed integer linear programming (MILP) method by considering the fixed costs of facility infrastructure, clinker and cement bag and bulk unit production and distribution costs. The results provide recommendation that in the current oversupplied market situation to close 21 out of the 31 units of the packing plant and 2 of 3 units of the grinding plant along with the allocation of each facility with a utilization rate of 76.6% of the capacity owned after the acquisition.
Provision model for line balancing in multi-echelon multi-product continuous cement production
Authors: Permana N , Partiwi S G , Widodo E 
Published: March 2021

Abstract
This study investigated model for line balancing in multi eschelon and multi product. A cement company which have 4 integrated plant consist of multi-eschelon 4 rawmill, 4 kiln, 9 finish mill with multi-product OPC and PCC. This paper proposed production cement plant mathematical model using mixed integer linear programming (MILP). The main objective of the model is minimize cost by changing decision variable production rate (ton/hour) and product allocation route. Constraint is demand fulfillment of multi product, inventory and production balancing, inventory and production min/max production. Furthermore, the improvement recommendation also will be declared in order to reduce production cost.The implication practice of proposed model of line balancing in multi-eschelon multi product continuous production is production manager could develop production planning and manage production rate in order to reduce production cost during multi period.
An integrated analysis of port and coal storage development plan in a mining company with a simulation approach
Authors: Kusuma E , Arvitrida N I 
Published: March 2021

Abstract
Managing inbound logistics activities requires an integrated and comprehensive perspective to understand the operations complexity that affects inbound performance. This study proposes an integrated analysis in port and coal storage development plan in a mining company. The main goal of the analysis is creating a cost-effective plan. A discrete event simulation (DES) approach is used to model the complexity, and the model is applied to analyse the number of barge slip, port loading and unloading equipment, the number and the type of material transport equipment. It also analyses how storage capacity can achieve particular service levels. The model considers the actual restriction and uncertainties, such as tidal time, barge sailing and berthing time, loading and unloading time, material transportation time, availability of barge slip, material transportation, loading and unloading equipment. The simulation using 2020 data as the baseline of demand and 2027 data as the highest demand until 2030, this demand led to high queues at barge slip, making stockpile capacity insufficient, and high utility on trucks followed by long queues. Based on the simulation results, increasing the number of resources can be able to solve the overcome problems.
A safety-first portfolio selection framework: Estimating returns of exchange traded funds through regression analysis
Authors: Young M N 
Published: March 2021

Abstract
This research provides a possible variant of the basic framework of portfolio selection. First, for the return estimation, considering Asian exchange-traded funds as the selection pool for the investment, regression analysis is applied to generate future return scenarios. Second, for the assignment of weights, the likelihood of these scenarios are assumed to be equally likely. Third, for the portfolio selection model, the safety-first model is utilized with consideration of 5 different diversification factors. The proposed procedure is modeled as a linear programming model into AIMMS optimization software where the resulting portfolios show that safety-first portfolios can outperform the benchmark. These observations can pave the way to a new generic portfolio selection framework that can possibly help investors and may lead to alternative investment instruments.
Analysis of usability and user experience on the batik’s website design
Authors: Hartomo S , Bakal T S C 
Published: March 2021

Abstract
Batik is one of Indonesia’s cultural heritage that has been recognized internationally such that this commodity is in demand by most local and international markets. For that reason, it is significant to promote and make an on offer to those markets in an effective and attractive way. E-marketing is a method of the company to communicate, promote, and sell products and services over the internet. However, some Batik industry in Indonesia has not applied this technique optimally though they have the website. It is indicated by a number of customers interacting with the company are still low which is around 3,735 visitors for 4 months. And they utilize the Batik’s website for only the tour, not executing the purchase. Thus, it is beneficial for evaluating the quality of the Batik website. The objective of this study is to analyze the usability and responsiveness level of one of the Batik websites in a certain company in Indonesia. Usability test and user experience method were utilized in this study where about the 30 experienced respondents is participated. Descriptive statistical analysis is conducted to explain the status of the website. Result of this study shows that the usability level of the existing Batik website is not effective, not efficient, not satisfaction. While the level of responsiveness is not responsive (Bad Level). This is indicated a score of attractiveness, perspicuity, efficiency, dependability, stimulation, novelty is 0.12, -0.25, -0.24, 0.12, 0.08, -0.20 respectively. The recommended design in this study is valid to satisfy the user requirements at 5% of significant levels statistically.
Designing sweet biscuits packaging by considering the level of attractiveness based on eye tracking data
Authors: Ronyastra I M , Kusumo A H , Hartono M , Tantoisworo E S 
Published: March 2021

Abstract
The diversity of types of packaging of the product is not entirely desirable by consumers. This study aims to conduct a ranking analysis on packaging, an analysis of the correlation between fixation to the level of attractiveness, and packaging design that is of interest to consumers. Data collection was obtained through eye tracking and post exposure questionnaire for 49 respondents. The analysis shown that the correlation between fixation to level of attractiveness is not correlated, due to external factors such as brand image, brand familiarity, and others. Then, the design of the product packaging is done where the basic orange color packaging concept and its packaging elements are obtained based analogous theory. A concept testing was done afterwards and revealed that the overall packaging design can meet the needs of consumers with a percentage of fulfillment above 70%.
The Reliability-Centered Maintenance (RCM) effect on plant availability and downtime loss in the process industry
Authors: Khasanah R , Sodikin I , Penirewod A P , Rachmad B , Pratama N A 
Published: March 2021

Abstract
The process industry needs an optimal preventive maintenance strategy because the even breakdown of one machine can cause an unexpected shutdown for the whole production process. The case study company (CSC), one of the fertilizer companies in Indonesia implements Reliability-centered Maintenance (RCM) as their preventive maintenance strategy to decrease downtime and increase the availability of the production plants. Eversince the RCM implementation started in 2007, there is no study to evaluate the RCM implementation. Relations between the two parameters (downtime loss and availability) are analyzed using the Pearson correlation test as a statistical method to evaluate the RCM implementation. The results of the analysis show that the R-value of downtime loss and availability of K-3 Ammonia and Urea plants are increased, while the R-value of K-4 Ammonia and Urea Plants are decreased. The RCM implemented in K-4 plants should be evaluated respectively, because the decreasing of the correlation means the RCM implementation on the plant still has not met its propose and there are stills hidden factors that affect the availability and downtime loss of the plant, regardless the RCM implementation.
Design improvement of pallet in automotive industry
Authors: Bakhtiar A , Puspitasari S A 
Published: March 2021

Abstract
In automotive manufacturing industry, supplies of different parts are required to construct products. Products are manufactured as per a company’s production targets, and in the effort to do so, some that are sent from suppliers must arrive on time and accordingly. The process of delivery incorporates the use of shuttles where parts are packed into pallets and then sent to warehouses. High demand yields high production that implies high trucking costs. The more pallets used in the transport of goods, the more shuttles are used and the higher the trucking costs. Based on observations of problems, the low effectiveness of the transporting process of goods, among others, is factored by the less than maximum pallet design giving rise to unused spaces within shuttles upon shipment.
Eye-hand movement in 3D displays: A structural equation modeling approach
Authors: Prasetyo Y T , Widyaningrum R 
Published: March 2021

Abstract
Eye-hand movements are two important parameters to evaluate the User Experience (UX) in the stereoscopic display (3D). The current study utilized structural equation modeling (SEM) to derive the causal relationship between parallax, index of difficulty (ID), eye movement, hand movement, eye index performance (IP eye), and hand index performance (IP hand) simultaneously. 10 participants voluntarily participated in the current study and they were asked to perform a multi-directional Fitts’ Law task in the projection-based stereoscopic display. The results indicated that parallax had significant effects on eye movement time and hand movement time. In addition, ID was found to have significant effects on eye movement time and hand movement time. Interestingly, parallax and ID were found to have significant effects on IP eye, however, no significant effects were found on IP hand. These findings could be very beneficial for UX researchers and projection-based stereoscopic display developers especially in terms of evaluating UX of an interface.
Kansei engineering application in redesigning carica packaging to support local-small industry in Central Java
Authors: Prastawa H , Mahachandra M , Donida D A H 
Published: March 2021

Abstract
Packaging is one of the important elements of product sales. The packaging is one form of branding business of a business party. This study was conducted to apply the principles of Kansei Engineering to packaging products of Carica, one of the MSMEs in Wonosobo. This research was conducted to find out what kind of design desired by consumers of Carica products to encourage them to make purchases of these products. The method used is the Kansei Engineering method which will then be collaborated with the Kano model method and conjoint analysis. Kansei Engineering will help this research in determining what aspects consumers want to feel when they buy a Carica product. After that, using the Kano model principle will be determined categories from each aspect that consumers feel into several parts, namely basic attributes, linear attributes, attractive attributes, and non-significant attributes. Aspects included in the non-significant attribute category are considered not suitable to be used as a new design concept of Carica packaging. Finally, the packaging aspects that consumers want to feel when buying these products will be linked to the new design using conjoint analysis. This research concludes that the new packaging will be square and made of glass and has a label that has a fruit picture and has an orange theme.
IoT based kWh Meter Recorder System for Electrical Substation
Authors: Khozain Moh , Ahmadiyah Adhatus S 
Published: March 2021

Abstract
The plan to abolish the substation operator raises new problems in reading the electrical energy stand, which at present all State Electricity Company units conduct it manually. This paper aims to provide a cost-effective meter data recording system to replace manual reading. The proposed solution is developed using WI-FI based internet of things (IoT) technology. Our proposed solution is implemented as a meter-recording device installed at the substation. Since deployed in December 2018, this tool works very well. Since it actively supports East Java’s performance in the pilot distribution control unit, it can be implemented in other units.
Data analytics in asset valuation under uncertainty: A case study of unexplored oilfields
Authors: Pratikto F R , Indratno S W , Suryadi K D , Santoso D 
Published: March 2021

Abstract
Valuing unexplored oilfields is challenging since it deals with multiple sources of uncertainty and covers a lengthy period. Previous research suggests that the major source of uncertainty in the valuation of unexplored oilfields is reservoir condition. It is usually represented by a bunch of parameters based on which reserve volume and production rates can be estimated. The values of these parameters are revealed only after exploration well is drilled; we refer them as post-discovery parameters. Prior to exploration drilling, data on some reservoir characteristics, called the pre-discovery parameters, are available. This research aims to develop a model to estimate the probability distribution of post-discovery parameters based on pre-discovery data. The model is data-driven, built using the database of proven reservoirs. We use the Bayesian network to develop the model and apply the k-fold cross validation to test the results. By adding a window parameter to the target variable, the model provides information regarding the trade-off between accuracy and confidence. In general, compared to the initial model that uses a priori clustering based on the reservoir’s lithology and depth, our Bayesian network model produces lower variances.
Integration lean manufacturing and 6R to reduce wood waste in furniture company toward circular economy
Authors: Hartini S , Wicaksono P A , M D Rizal A , Hamdi M 
Published: March 2021

Abstract
The furniture industry is suspected to have triggered global warming. The need for wood as raw material becomes a necessity for cutting down trees. The concept of a circular economy aims to reduce the use of natural resources by utilizing production waste or post-use product waste into raw materials. One strategy that can be used to support the circular economy is by implementing 6R. The application of 6R in a circular economic perspective on the furniture industry will be interesting to do. This study uses value stream mapping as a lean manufacturing analysis tool to identify furniture company waste. Value stream mapping is developed by integrating green manufacturing indicators such as material consumption and waste management. Practically, the furniture company can find out the map of production waste so that it can utilize waste as raw material for derivative products as an effort to reduce tree felling. Theoretically, this research will enrich the integration of green-value stream mapping toward the circular economy by implementing the 6R strategy in furniture companies. Reuse wood waste as a raw material for a variety of table products can reduce the amount of wood waste while reducing the resources of wood logs.
How sustainable are flexible and rigid pavement? A Life Cycle Impact Assessment (LCIA) approach
Authors: Hatmoko J U D , Lendra L 
Published: March 2021

Abstract
The number of road construction projects continues to grow, potentially causing more impacts on the environment. This research analyses the impacts of road construction projects of flexible and rigid pavement by adopting the Life Cycle Impact Assessment (LCIA) approach, and by means of the Eco-Indicator 99 (EI99). The impact values at the production, construction and maintenance stages for the flexible pavement are 86.60 kPt (49.34%), 65.40 (37.26%) and 23.50 kPt (13.39%), while for the rigid pavement equals 47.70 kPt (60.46%), 31.20 (39.54%) and 0 kPt (0%), respectively. It is smaller than the flexible pavement, i.e. 175.50 kPt and 78.9 kPt, respectively. The results of the EI99 show the impact values of the flexible pavement from the aspects of human health, ecosystem quality, and resources are 11.99 kPt (6.83%), 2.17 kPt (1.24%), and 161.40 kPt (91.93%), while for the rigid pavement of 29.49 kPt (37.43%), 37.80 kPt (4.79%), and 45.54 kPt (57.78%), respectively. The total impact value of the three aspects of the rigid pavement is 78.9 kPt, which is smaller than, and worth 45% of the flexible pavement of 175.50 kPt. It can be concluded that the rigid pavement can be considered more sustainable than flexible pavement.
Automated fish feeding system for an offshore aquaculture unit
Authors: Karningsih P D , Kusumawardani R , Syahroni N , Mulyadi Y , Saad M S B M 
Published: March 2021

Abstract
One of the major challenges in aquaculture is fish feeding management. Inappropriate feeding practices could threat the fish’s growth and health, may lead to negative environment impact due to excess food contamination, and more importantly high operations cost. This study is aiming at proposing a fish feeding management system for OceanFarmITS, an offshore aquaculture unit designed by Marine Research Centre of Institut Teknologi Sepuluh Nopember Surabaya. One of the most commercially popular fish, Tiger grouper is selected to be cultivated in OceanFarmITS pilot project. The fish feeding management systems include fish feeding arrangement and fish feeder system that is customized specifically to OceanFarmITS operations nature. Automatic fish feeder is an alternative to solve existing feeding problems such us inefficiency of conventional or manual feeding. The proposed system consists of a control system using microcontroller Arduino board to receive data from sensors then send the instruction to the motor driver. Moreover, it has alarm system that sends notification to Aquaculture operator when food storage in silo tank has reached a limit level. The proposed design of feeding system would support operations of OceanFarmITS to conduct feeding activity efficiently by minimizing operations cost and environmental impact while keep fish optimal growth.