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INDONESIA
SPEKTRUM INDUSTRI
Published by Universitas Ahmad Dahlan
ISSN : 16936590     EISSN : 24422630     DOI : -
Core Subject : Engineering,
Industrial & Manufacturing Engineering
Spektrum Industri is a media published scientific articles in the science scope related to engineering and/or industrial management both research and theoretical. Literature review will be considered if it is written by an expert. Spektrum Industri is published by Universitas Ahmad Dahlan in twice a year, every April and October. 5. Scope : Ergonomic, Work System Design and Product Design, Manufacturing System, Quality Management, Operationsal Research System Modeling, Industrial Management, Decision and Information System, Logistics and Supply Chain Management.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 199 Documents
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PENERAPAN METODE SIX SIGMA UNTUK MENGURANGI JUMLAH PRODUK CACAT PADA PROSES PRODUKSI DI PT. RUKUN CITRA ABADI Mega Octavia; Sunday Noya
Spektrum Industri Vol. 17 No. 2: Oktober 2019
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v17i2.13560

Abstract

PT. Rukun Citra Abadi is a manufacturing company that produces cartons in Indonesia.This is a new company that is still under development, especially the quality control system, as seen from the defective products produced. To overcome this problem, there will be applied the Six Sigma method. The data collection and processing phase starts from define, which is an analysis of product quality characteristics or Critical to Quality, then measure at the stage where DPU, DPMO and conversion values are calculated sigma value, then continued to analyze stage the analysis carried out based on the results of the quality characteristics (CTQ) which has been determined at the define stage with the sequence method Defect Concentration Diagram, Fish Bone Diagram and Failure Mode and Effect Analysis (FMEA). The results of the analysis obtained DPMO values in January (9550), February (8886) and March (7025), after the implementation of the DPMO value in April (5086) and sigma values from January to March, 3.84; 3.87 and 3.95 in April (4.06). The cardboard box DPMO value in January 6530, February (6560) and March (6965), after the implementation of the DPMO value in April (6071) and the sigma value from January to March, 3.99; 3.99 and 3.95 in April (4.02). The sigma value for sheet and cardboard box cartons has increased, which means that the implementation has  succeeded, in other words has succeeded in reducing defective products in the production process of cardboard.
ANALISIS RESIKO MUSCULOSCELETAL DISORDER PADA TATA LETAK LCD PROYEKTOR RUANG KULIAH FAKULTAS EKONOMI & BISNIS UNIVERSITAS MURIA KUDUS Akh Sokhibi; Rangga Primadasa
Spektrum Industri Vol. 17 No. 2: Oktober 2019
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v17i2.13705

Abstract

A class room was a room where the face to face learning process took place in the form of lectures, discussions, tutorials, seminars, etc. The class room must be equipped with facilities and infrastructure including table and chair for lecturer and students, LCD projector and white board. The layout of equipment in the class room sometimes dis not consider the ergonomics aspects, so that it might cause musculoskeletal disorder to the students. Descriptive quantitative methods were used in this study. A randomsampling using the Nordic Body Map (NBM) questionnaire was used for data collection. Then, the data were analyzed by the contingency coefficient test which was interpreted in the form of a risk relationship picture of the musculoskeletal disorder in the class room of the Faculty of Economics and Business, Muria Kudus University. The results of thisreseartch were the LCD projector layout did not consider ergonomic aspects. The results of the Nordic Body Map Questionnaire showed that there were 14% high risk, 14% moderate risk and 72% small risk. There was a 14% relation between the location of the LCD Projector in the class room of the Faculty of Economics and Business, University of Muria Kudus, on the user's musculoskeletal disorder.
IMPLEMENTASI LEAN HEALTHCARE UNTUK MENGIDENTIFIKASI DAN MEMINIMASI WASTE DI INSTALASI RAWAT JALAN RSAI BANDUNG Lisye Fitria; Berliana Annisa Dery; Hendro Prassetiyo
Spektrum Industri Vol. 17 No. 2: Oktober 2019
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v17i2.13921

Abstract

Lean healthcare is one way to identify and minimize waste in every service process at the outpatient installation of Al Islam Bandung Hospital (RSAI). Patients must wait more than 2 hours to get service. The tools used for the implementation of lean healthcare are current state mapping, value assessment, and Failure Modes and Effects Analysis (FMEA). The results showed that the wastage waiting category was a critical waste. Proposed improvements are expected to reduce waiting time for general patient services 65.438%, BPJS Health patients 70.632%, and contracting patients 70.921%.
ANALISIS PERENCANAAN PERSEDIAAN BAHAN BAKU MENGGUNAKAN METODE ECONOMIC ORDER QUANTITY DENGAN PERTIMBANGAN STOCKOUT COST (Studi Kasus Pada PT. Multi Logam Presisi) Hendy Tannady; Yohanes Dwi Pratama
Spektrum Industri Vol. 17 No. 2: Oktober 2019
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v17i2.13944

Abstract

The demand for erratic products makes the company must control raw material inventory. This study aims to minimize the total costs associated with supplying raw materials by determining the appropriate inventory control methods for the company. Research using the probabilistic inventory method because there are costs associated with shortages (stockout cost), if there is a shortage of inventory the company will do a back order (back order) to meet existing demand.The analysis shows that the calculation of probabilistic inventory models provides lower costs compared to the company method. The optimum number of orders with the EOQ method is 25,95 kg. The company experienced a stock out of 38,06%. The company resolved the problem by paying a fee of Rp 32.869,70. Inventory planning using the EOQ method can save Rp 42.213,67.
BANKRUPTCY PREDICTION OF LISTED CEMENT COMPANY IN INDONESIAN STOCK EXCHANGES USING ALTMAN Z-SCORE MODEL Arifia Fitriani; Alizar Hasan; Ahmad syafruddin Indrapriyatna
Spektrum Industri Vol. 17 No. 2: Oktober 2019
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v17i2.13961

Abstract

Ratio analysis is one of the most competent tools to predictthe bankruptcy of a company. In this paper the bankruptcyprediction of listed cement company in Indonesian StockExchanges has been evaluated using Altman Z-score. Thisstudy aims to determine the level of the bankruptcy of thelisted cement companies in the Indonesian Stock Exchangeduring 2013 to 2017. There are four listed cementcompanies, namely PT Semen A, PT Semen B, PT Semen Cand PT Semen D. Based on the results of the research, itshows that PT Semen A, PT Semen B and PT Semen C are inthe safe zone with the highest Z value which is 15,822 andthe lowest Z value which is 3,542. PT Semen D is in thebankrupt zone because it has a Z value below 1.8. For thatreason, all companies need to improve the performanceimmediately to avoid the bankruptcy happening. There aremany ways to avoid the bankruptcy such as improving thesales revenue, improving operational cost and wastereduction in operation.
INTEGRASI METODE SWOT DAN QFD UNTUK MENINGKATAN DAYA SAING USAHA MELALUI PENGEMBANGAN PRODUK OTAK-OTAK BANDENG GRESIK Narto Narto
Spektrum Industri Vol. 18 No. 1: April 2020
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v18i1.13990

Abstract

Gresik milkfish brain is a commodity from strategic ponds that has high economic value. An increase in population and high competition in the industrial era 4.0, the industry must be supported by competitive strategies to obtain a broad market share. To win the competition the industry must innovate products in accordance with consumer demand. The purpose of this research is to identify strengths and weaknesses as well as opportunities and threats, find out the desires and needs of consumers that have not been fulfilled in the preparation of milkfish brains, design effective business strategies through product development. Based on the results of the research using the SWOT method, a competitiveness strategy is obtained that is designing attractive packaging with the characteristics of the city of Gresik by using special materials that are environmentally friendly, product innovation oriented to new product variants, building a system of purchasing raw materials and supporting materials as well as integrated sales distribution, materials raw choice and processing of production processes that adopt technology. Product development that can be done with the QFD approach is to create new variants with priority on original, sweet, spicy flavors, each package uses an ergonomic design and secondary colors. The inner packaging material is coated with an antimicrobial edible coating
PEMODELAN PERMINTAAN YANG MEMPERTIMBANGKAN HARGA, LOKASI DAN REBATE Rizqa Amelia Zunaidi; Wahyu Andy Prastyabudi; Abduh Sayid Albana; Sinta Dewi; Nisrina Salsabilah
Spektrum Industri Vol. 17 No. 2: Oktober 2019
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v17i2.14325

Abstract

In accordance with Hottelling's Law, strategic location is a significant factor to ensure the success of a business, thus two businesses which sell the same product tend to choose a closed location. The real practice of this concept is seen in the competition of two big retailers which often open their shop nearby. However, in such competition, the location factor is merely not sufficient. It is necessary to consider other factors such as price and rebate or discount types given to their customers. This paper, particularly, aims to see the customers' preferences towards given attributes i.e. price, location, and discount types. The data is collected bymeans of a survey with non-probability sampling that is judgmental sampling. The respondents are people reside in Surabaya, Sidoarjo, and nearby whose age between 15-45 years and having various profession. The data is then processed with conjoint analysis by which is used as a basisto reconstruct a demand model considering the customer's preferences. The result shows that the attribute which is most considerable by respondents is the discount types, herein is a bundling product that comprises various products. This attribute has a preference level at 54.53%. The second prioritized attribute is the retailer location with a preference level at 24.28%. This means that a closer retailer is the most preferable by the respondent. Meanwhile, price is the last attribute considered by the respondent in choosing the retailer with a preference level at 21.28%. Thus, a respondent tends to pick a cheaper product after considering its discount type and the distance of retailer.
IDENTIFICATION OF THE CAUSES NATA DE COCO PRODUCTION DEFECTS FOR QUALITY CONTROL Mahmud Basuki; Rizqa Ula Fahadha
Spektrum Industri Vol. 18 No. 2: October 2020
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v18i2.14393

Abstract

Nata de coco is food made from coconut water waste which can be consumed and can help improve the digestive process. The results of fermentation at PT XYZ still contain damaged or moldy nata sheets. The purpose of this study is to identify the causes of nata sheet defects. The identification of production defects in this study uses a fishbone diagram. The results of this study show that the cause of nata de coco sheet defects is the quality of coconut water that is too old (contains oil), too young (does not contain minerals), too long exposure to open air (contaminated with other bacteria). So that the resulting starter seeds are not good enough. Other causes are because the tray used is not clean (still runny), the newspaper used is torn (wide open), shocks occur during fermentation, alkaline pH, fluctuating air temperature, the boiling process has not reached boiling point, and the amount of additional materials (ZA fertilizer and sugar) is not quite right.
IMPROVEMENT OF WORK METHOD TO REDUCE REPETITIVE WORK IN PT. TRIJAYA PLASTIK UTAMA WITH OCRA METHOD Bambang Suhardi; Syafiya Maharani; Rahmaniyah Dwi Astuti
Spektrum Industri Vol. 18 No. 2: October 2020
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v18i2.14957

Abstract

PT. Trijaya Plastik Utama is a company that manufactures raincoats. Based on the results of interviews with workers in 3 production departments, most experienced complaints in the upper limbs, especially the neck, back, and hands. Most of the work does repetitive activities with long cycles, so the nature of the work is suspected to cause musculoskeletal disorders for the operator. This study aims to identify the presence of musculoskeletal risks due to repetitive work using the Occupational Repetitive Action (OCRA) method. Based on the identification results of each department section, the packing section has the highest OCRA index value with a value of 3.86 for the right hand and 3.01 for the left hand. Improvement efforts to reduce risk due to repetitive work is to apply the concept of Eliminate, Combine, Re-Arrange and Simplify (ECRS) and the proposed design of work facilities. As a result, the OCRA index value dropped to 0.95 for the right hand and 0.85 for the left hand where the conditions were optimal
THE IMPACT MODELS OF ENTREPRENEURSHIP EDUCATION PROGRAMS AND STUDENTS’ INDIVIDUAL ATTITUDES ON STUDENTS’ ENTREPRENEURIAL INTENTIONS Albertus Daru Dewantoro; Lucia Ina Trisjanti; Diio Rivaldo
Spektrum Industri Vol. 18 No. 1: April 2020
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v18i1.15819

Abstract

Generating unemployment is something that is not desired by every university. The history of the economy in Indonesia proves that entrepreneurship has a positive impact on the resilience and economic growth of the nation, therefore most universities require their students to take entrepreneurship courses. University academic support in terms of entrepreneurship education is expected to be able to foster students entrepreneurial intentions, so that the target of increasing the number of entrepreneurs can be realized. Entrepreneurial intention is also influenced by individual students attitudes factors. This research was conducted by surveying 155 students at two universities in Surabaya, to answer the purpose of this study we use the analysis of independent sample test and multiple regression. This study found evidence that the type of education (vocational and non-vocational), and the background of parents' work (entrepreneurial and non-entrepreneurial professions) did not have a significant difference affecting students entrepreneurial intentions. This study also found evidence that factors of students individual attitudes and entrepreneurship education programs had a positive and significant effect on growing students entrepreneurial intentions

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