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The Capacitated Sustainable EOQ Models: Models Considering Tax Emissions
Sri Kurnia Dwi Budi Maulana;
Dana Marsetiya Utama;
Mochammad Samsul Asrofi;
Inggit Sekar Ningrum;
Nidaul Alba;
Hikam Antasyard Ahfa;
Thoriq Akbar Zein
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.12-21
The study investigated problems of determining the lot size by considering sustainability and capital constraints for purchasing raw materials and taxes. Using the Sustainable EOQ (SEOQ) models that considered environmental aspects, the researchers also evaluated the capital constraints. The proposed models were used to minimize total inventory costs. In this study, there was a practical numerical analysis and sensitivity analysis to help decision-makers and inventory problems. Finally, the experimental results showed that the proposed models were effectively used to solve the problems.
The Development of Customer Loyalty Model for Mobile Travel Agent Application
Budhi Prihartono;
Muhammad Azhar Ashari;
Aldila Rizkiana
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.1-11
The growth of smartphone users in Indonesia opens up business opportunities for service providers, particularly via m-commerce. However, along with these great opportunities and rivalry, service providers are required to make consumers faithful to the products and services they deliver. This research aims to develop a conceptual model for an application based on m-commerce, particularly mobile travel agent applications. The research model is based on applying five dimensions of Mobile Service Quality (M-S-QUAL), customer engagement, and commitment as the predecessor factors of customer loyalty. The study was conducted on 760 MTA application users who participated in an online survey. The data were divided into two groups based on income level to be further analyzed using the Multigroup Structural Equation Modeling (SEM). The Multigroup SEM analysis shows that the concept of customer loyalty was explained differently by the two groups with different income levels.
Employee Performance Assessment using Analytical Network Process and Rating Scale
Riska Septifani;
Panji Deoranto;
Tiyas Widya Armanda
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.70-79
Employee performance assessment is an essential aspect of a company. This study aims to assess employee performance based on Analytical Network Process (ANP) and rating scale. ANP was employed to determine the importance of the criteria. Meanwhile, the rating scale was used to analyze the results of the employee performance assessment. The results of the study showed the weights of the criteria. The highest to lowest weights in sequence included the skills to carry out tasks, job performance, ability to cooperate, employment relationship, and personality. Based on the assessment of fifty-three employees of HRD and Corporate Secretary and General Counsel Department, one employee showed outstanding performance, four employees exemplified high performance, forty-five employees met the standard performance, and three employees had low performance.
A Routing Model for Hybrid Hub-and-Spoke with Time Windows
Felix Arya Gunadi;
Dharma Lesmono;
Kinley Aritonang
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.22-33
Currently, the company competition is getting tighter. Distribution companies need to provide excellent service to their customers to maintain their competitiveness. Distribution service performance could be measured with lead time. However, Reducing lead times may increase costs. This problem could be solved using freight consolidation and reducing backhaul. Freight consolidation can be done by using a hub-and-spoke network with a combination of inbound and outbound distribution. This study developed a route model for hybrid hub-and-spoke with time windows. This model determined the routes for shipping goods to consumers and taking products to suppliers using the same vehicle to reduce the backhaul. This model also conducted freight consolidation at the hub. The decision variables in this model included the routes of delivery to consumers, the collection of goods at the suppliers, the number of products distributed through the hub and direct shipping, and the excellent distribution route. This model was implemented into the problems. Besides, a sensitivity analysis of the model was carried out.
Integrated ANP and TOPSIS Method for Supplier Performance Assessment
Christine Natalia;
Ita Primsa Surbakti;
Chendrasari Wahyu Oktavia
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.34-45
A supplier has become one of the main factors that influence a company's supply chain activities. Supplier assessment is vital as suppliers have different performance. This study aims at assessing supplier performance using the integration of ANP and TOPSIS methods. Supplier performance assessment was based on supplier criteria indicators. The weighting criteria used ANP was used to determine the most significant influence criteria of supplier performance. Furthermore, TOPSIS was also employed to obtain supplier preference. Eight criteria and twenty-five sub-criteria were used for the supplier performance assessment. The three highest sub-criteria were specification of quality, the flexibility of order changes, and production capacity. The priority results for suppliers were sorted from the highest to lowest ratio values.
The MILP Model for Locating the Temporary Disaster Emergency Operation Centers in Manado Indonesia
Andre Ch. Lasut;
Prudensy Febreine Opit;
Ronaldo Rottie
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.46-57
The research proposes the Mixed Integer Linear Programming Model (MILP). This model integrates the location decisions and the number of temporary Emergency Operations Center (EOC) to be constructed. This model also focuses on events related to natural disasters, particularly floods. The researchers applied this model according to the flood scenario in five flood-prone districts in Manado, Indonesia. This research focused on maximizing the number of temporary constructed EOCs to provide the relief demands of disaster areas by considering multiple periods. The available budgets were considered as the limited constraints in this model. Therefore, the results showed that the percentage of relief demand satisfaction ranges from 28% to 100%; meanwhile, the number of the to-be-constructed temporary EOCs ranges from 0-3 for each scenario.
The Mapping of Sustainability Index in Small and Medium Enterprises: A Case Study in Lampung Indonesia
Lintang Harwina Madyaratry;
Hartrisari Hardjomidjojo;
Elisa Anggraeni
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.58-69
Small-medium enterprises (SMEs) generally have constraints on their performance efficiency and productivity. It affects the ability of SMEs to compete in the global market. Therefore, the mapping of SME conditions needs to be analyzed. This study aims to map the SME conditions and find out SME’s sustainability index. This study uses a multidimensional scaling method through ecological, social, economic, technological, and institutional dimensions. A case study was carried out at Banana Chips SMEs in Lampung Province. These SMEs are the mainstays of Lampung Province. The results show that the SME condition was divided into three categories: poor, good, and very good. The status of the sustainability of SMEs in each dimension was divided into two groups: the poor category for the technology dimension and the good category both for the ecological, social, economic, and institutional dimensions. The results of the mapping of SME’s sustainability index produced several improvement strategies for SMEs.
The Influence of Turnover Factors Toward Employees’ Intention to Stay: A Case Study in Indonesian Islamic Universities
Nazaruddin Malik
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.80-91
This study analyzed employee turnover factors, such as satisfaction, organizational commitment, and religiosity, to predict the employees’ intention to stay. Very few studies in the Muslim context have explored such a corporate attitude from job satisfaction and organizational commitment. This study employed a quantitative and descriptive research design. A survey was used to analyze the correlation between some predictors of the employees’ intention to stay. In particular, it attempted to show that religiosity affected both job satisfaction and organizational commitment either directly or indirectly. The data were obtained from 150 employees in some Islamic universities in Malang, Indonesia. The findings revealed that religious beliefs influenced job satisfaction. Job satisfaction significantly affected the employees' commitment. Religiosity directly impacted corporate commitment through job satisfaction, and religiosity was positively related to the employees' intention to stay. Regarding this, the employees who keep religious beliefs in the workplace are encouraged to perform excellently.
Development of Risk Evaluation and Mitigation Systems for Logistics System
Ahmad Rusdiansyah;
Della Deswiana Pratama;
Muhammad Faisal Ibrahim
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.92-103
Logistic activities are significant activities that pose various risks for the company. These risks can affect the company’s performance. To be able to compete in the globalization era, companies need proper risk management. This study aimed to develop Risk Evaluation and Mitigation Systems. We offered four stages: risk identification, risk analysis, risk evaluation, and risk response. A case study was conducted to implement the proposed Risk Evaluation and Mitigation Systems. The results indicated that the proposed Risk Evaluation and Mitigation Systems were proven to be appropriately applied to evaluate company risks and provide mitigation recommendations.
Decision Support System for Community Housing Subsidy Recipients
Adhi Nugraha;
Alvian Widianto;
M. Irfan;
M. Nasar;
Merinda Lestandy
Jurnal Teknik Industri Vol. 21 No. 1 (2020): February
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang
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DOI: 10.22219/JTIUMM.Vol21.No1.104-114
Human needs consist of primary, secondary, and tertiary needs. In primary needs, the house is one of the most critical primary needs in supporting one’s life. However, not all residents in Indonesia can meet these needs. Therefore, the government provides subsidized housing ownership programs for people with low income. This study aims to propose a decision support system in determining the proper housing subsidy recipients. The method used in weighting is Analytic Hierarchy Process (AHP). Previous research was still limited to the selection of subsidized housing for developers and potential buyers. This method is projected to provide results in the form of a priority sequence of alternative solutions based on test results. The results were considered capable of providing a better solution for selecting prospective recipients of the housing subsidy program.