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Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri

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Published by Universitas Kristen Petra Surabaya

ISSN : 14112485 EISSN : 20877439 DOI : -

Core Subject : Engineering,

Industrial & Manufacturing Engineering

Jurnal Teknik Industri aims to: Promote a comprehensive approach to the application of industrial engineering in industries as well as incorporating viewpoints of different disciplines in industrial engineering. Strengthen academic exchange with other institutions. Encourage scientist, practicing engineers, and others to conduct research and other similar activities.

Arjuna Subject : -

Articles 412 Documents

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The Effect of Top Management Involvement on Supply Chain Risk Management through Buyer-Supplier Relationship Hotlan Siagian; Zeplin Jiwahusada Tarigan; Han Tae Hee
Jurnal Teknik Industri Vol. 20 No. 2 (2018): December 2018
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper aims to examine the role of the buyer-supplier relationship in improving the impact of top management involvement in the supply chain risk management. The study used 55 export-oriented manufacturing companies domiciled in East Java of Indonesia, and three respondents from top management level represented each company. Of 55, 44 companies have completed the questionnaires which means the response rate of 80%. Data collection used a questionnaire designed with a five-item Likert scale. Data analysis used the partial least square technique with Smart-PLS software version 3.0 to examine the hypotheses. The finding revealed that top management involvement affects supply chain risk management, top management involvement affects the buyer-supplier relationship, and buyer-supplier relationship affects supply chain risk management. The last finding is that buyer-supplier relationship empirically the effect of top management involvement. This paper paves the way for the manager in improving supply chain risk management by practicing top management involvement and development of a relationship with the supplier.

Scheduling Flexible Manufacturing System with Stacker Crane Using Coloured Petri Nets Ari Setiawan; Teguh Ersada Natail Sitepu
Jurnal Teknik Industri Vol. 20 No. 2 (2018): December 2018
Publisher : Institute of Research and Community Outreach - Petra Christian University

Scheduling Flexible Manufacturing System (FMS) can increase production speed and accuracy. It because FMS has an ability to process various variety of product at same work station. However, FMS need efficient allocation of resources, for example: allocation of material handling equipment. This paper presents production scheduling FMS modelling to 24 jobs and 4 machines considering stacker crane. Coloured Petri Nets (CP-Nets) is the programming language which used to simulate model because it’s simplicity. This model consists two main model activities. The first one is Physical Activity (PA) which related to every activity that involve physical movement, including stacker crane processes. PA consist five CP-Nets models: loading/unloading station, stacker crane, machine, picking mechanism, and pallet stocker. The second activity is Logical Expression (LE) which related to the rules on how FMS should operate. LE consist three CP-Nets models: machine selection, pick-up request, and stage two procedure. A simulation and numerical report show utilization level of all machines around 80-84% and stacker crane 8,74%.

Managing Work Family Conflict and Work Stress through Job Satisfaction and Its Impact on Employee Performance Riana Gede I
Jurnal Teknik Industri Vol. 20 No. 2 (2018): December 2018
Publisher : Institute of Research and Community Outreach - Petra Christian University

Work satisfaction has an important role in reducing work stress and work family conflict. This research aims to analyze the influence of work family conflict and work stress on the work satisfaction and performance of employees. The sample in this research is 46 married female employees. The data analysis technique used is the Partial Least Square (PLS) by using WarpPLS. The research results show that; work family conflict has a significant and negative influence on job satisfaction. Work family conflict has a significant and negative influence on employee performance. Work stress has a negative and significant influence on job satisfaction. Work stress has a negative and insignificant influence on employee performance. The analysis results provide information that work family conflict and work stress has an indirect influence on employee performance through job satisfaction. Furthermore, the indirect influence of work-family conflict on employee performance through job satisfaction is a full mediation. This means that job satisfaction has a strategic role in reducing the work stress and work family conflict so that it does not have a significant impact on employee performance. Job satisfaction can be improved by providing the feelings of fairness so that women can be satisfied with their job, conducting promotions, and supervisions. Finally, the social support of co-workers and management in the form of implementing family friendly policies is greatly needed to maintain the job satisfaction.

Multi-items Batch Scheduling Model for a Batch Processor to Minimize Total Actual Flow Time of Parts through the Shop Nita P.A Hidayat; Andi Cakravastia; T.M.A Ari Samadhi; Abdul Hakim Halim
Jurnal Teknik Industri Vol. 20 No. 1 (2018): June 2018
Publisher : Institute of Research and Community Outreach - Petra Christian University

This study is inspired by a batch scheduling problem in metal working industry which guarantees to satisfy a due date as a commitment to customers. Actual flowtime adopts the backward scheduling approach and considers the due date. Using the actual flowtime as the objective means that the solution is oriented to satisfy the due date, and simultaneosly to minimize the length of time of the parts spending in the shop. This research is to address a problem of scheduling batches consisting of multiple items of parts processed on a batch processor where the completed parts must be delivered several time at different due dates. We propose an algorithm to solve the problem.

Optimal Kiln Dry Allocation for Dry Timber Preparation to Minimize Cost Juliet Theresia; I Gede Agus Widyadana; Didik Wahjudi
Jurnal Teknik Industri Vol. 21 No. 1 (2019): June 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

Optimization models are increasingly developed for planning and scheduling in manufacturing of natural resources. However, the uncertainty of material from natural resources makes it more difficult to develop a model. In this paper, we concern about the cost of dry timber preparation for finishing process in a wood-board manufacturer. Based on characteristics of the material and wood-board production process, we develop two models to minimize transportation and drying cost of wood supply. The models consider the capacity of facilities, distances among facilities, and timber specification-based drying periods. The model is solved using linear programming, result in drying allocation of kiln dry’s chambers that gives the minimum cost of the process. A sensitivity analysis is conducted to demonstrate the effect of variation of internal capacity and external capacity to the objective function value. The results show that the total cost is more sensitive to the variation of the external capacity of kiln dry than the variation of the internal capacity.

Analyzing Remanufacturability of Mobile Phones using DEMATEL Approach Gan Shu San
Jurnal Teknik Industri Vol. 21 No. 1 (2019): June 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

The use of mobile phone has increased at a surprisingly high rate over these two decades. For many people, especially young generations, mobile phone has even become a primary need. As a consequence, the production of mobile phone has increased significantly and followed immediately by the disposal, as a result of its short life-cycle nature. Recently, there are substantial initiatives proposed in order to mitigate the effect of e-waste to the environment. Remanufacturing is one of recovery processes that could extend product’s useful life, and provide a circular life-cycle instead of linear. However, there are many factors that can affect the success of remanufacturing engagement, and specifically remanufacturability of a mobile phone. There are numerous considerations of remanufacturability with regards to the short life-cycle nature of mobile phone, and these factors can be qualitative or quantitative, with conflicting potentials, and some of them may be uncertain. In this study, we use Decision Making Trial and Evaluation Laboratory (DEMATEL) approach to identify the interrelationship among the factors, and analyze those results to identify the prominent factors. Furthermore, an influential-relation map is provided to support visualization for managerial implications.

System Dynamic Simulation of Salacca-Pondoh’s Business as Usual Condition in Sleman District, Yogyakarta Province, Indonesia Mohammad Prasanto Bimantio
Jurnal Teknik Industri Vol. 21 No. 1 (2019): June 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

Production of horticultural crops in Sleman District is dominated by salacca-pondoh with total production in 2016 reaching 73 kton, cover up to 98% of total salacca-pondoh’s production in Yogyakarta Province. But salacca-pondoh’s farmers actually got very low-price during harvest season and they only act as a price taker that had low bargaining position, so that their welfare. This research formulated salacca-pondoh’s business as usual condition in Sleman District in form of system dynamic simulation. The factors influenced the low income of farmers during harvest season were identified. Result showed there are several seasonal “pitfalls” points in the farmer’s income which made it dropped far below the average value. It has potential to make the farmers not to replant salacca-pondoh then switch to other fruits that are more profitable. Product diversification either vertically or horizontally by allocating some of the fruit and waste to be convert into derivative products can be a step to increase the income of salacca-pondoh’s farmers and intensify the economic activity in Sleman District.

Job Burnout and Employee Performance in Hospitality Industry: The Role of Social Capital Dhyah Harjanti
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 21 No. 1 (2019): June 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

The hospitality industry is known for its labor-intensive and intense interpersonal relationships characteristic. The high rate of burnout in hospitality industry has been a crucial issue. The burnout could lead to employee performance decline. The previous studies suggested that the happy and cooperative employees tend to deliver a better performance. Since cooperative is a part of social capital, this study aims to analyse the role social capital in reducing burnout and improving employee performance.The data collection was conducted by distributing questionnaires to all of non-daily worker employees at the first-line and middle-line level in three budget hotels in the similar chained hotel group in Surabaya. We processed the data using partial least square analysis technique.The result reveals that the social capital have a significant negative influence on burnout, and a significant positive influence on employee performance. We also ascertain that burnout have a significant negative influence on employee performance.

Proposing an Algorithm to Solve the Forward and Reverse Logistics Distribution Problem with One Door Container Stephen Sanjaya Budi; Paulina Kus Ariningsih; Titi Iswari
Jurnal Teknik Industri Vol. 21 No. 1 (2019): June 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

Forward and reverse logistics are two types of distribution methods that shall be synergized in practices. Two problems in synergizing the two distributions type are (1) how to route vehicles and (2) how to pack the goods inside the vehicle. A truck with only one door for loading and unloading process could create numerous problems of item packing activities. An item picked up from a customer could occasionally block other goods which need to be delivered; hence, the courier shall unload other items before the loading process. This condition will increase the probability of item damage, longer on-loading/off-loading (lo/lo) time, and higher lo/lo cost because of the rapid item movement. Therefore, this article aims to propose an algorithm to solve the problem by creating an algorithm hybrid of routing and packing to find the solution for routing and packing problem, sequentially, with a metaheuristic approach. The proposed method calculates the cost from routing procedure and sum of item movement in every loading and unloading process. Based on the trial on 25 cases, this algorithm generates 59.64% of the containers have zero goods repacking. Several potential future research avenues are also proposed in this article.

Are the Experts Really Experts? a Cognitive Ergonomics Investigation for Project Estimations Budi Hartono; Bhery Aditya Saputra
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 14 No. 2 (2012): DECEMBER 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

Uniqueness is a major characteristic of any project systems. Hence it is virtually in-feasible for project analysts to utilize data from past projects as references for subsequent project planning and scheduling. Most project analysts would then depend on intuition, gut feeling and experiences to develop quantitative models for project scheduling and analysis which, according to past studies, is prone towards systematic errors. This study attempts to investigate the perfor-mance of both ‘experts’ and ‘non-experts’ when utilizing their cognitive capability to estimate pro-ject durations in group/non-group settings. A cognitive ergonomics perspective -which views human capability to make judgment as rationally bounded - is utilized in this investigation. An empirical approach is used to inquiry data from ‘projects’ on which ‘experts’ and ‘non-experts’ are required to provide prior estimate on project durations. The estimates are then gauged against the actual duration. Results show that some systematic cognitive judgmental errors (biases) are observable for both experts and non-experts. The identified biases include: anchoring bias as well as accuracy bias.

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