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PROZIMA (Productivity, Optimization and Manufacturing System Engineering)
Published by Universitas Muhammadiyah Sidoarjo
ISSN : 25415115     EISSN : 25415115     DOI : https://doi.org/10.21070/prozima
Core Subject : Engineering,
Industrial & Manufacturing Engineering
Aim: to facilitate scholar, researchers, and teachers for publishing the original articles or review articles. Scope: Industrial Engineering included: Supply Chain Management Optimization and industry system Ergonomics Strategic Management Quality Engineering and Management Sustainability Experiment design Statistic Project Management Productivity Technology Management
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 106 Documents
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Key Success Factors to Increase Value Proposition in the Hospitality Industry Daniel Marco Stefan Kleber; Tatjana Volkova
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 2 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v2i1.2203

Abstract

Purpose of this conceptual study is the identification and analysis of key success factors to increase value proposition based on design thinking of hotel executives and value co-creation with customers in the hospitality industry. Globalized dynamic markets and ever-changing customer needs and demands require ongoing experimentation and communication to steadily identify customer needs and wants in order to adjust products and services to ensure an increase of value proposition. In this research article, the two-fold role of customers and hotel executives in value co-creation processes leading to an identification of key success factors of value proposition increase is analyzed. The article emphasizes the essential role of customers as contributors to value co-creation processes and hotel executives as contributors to the creation and delivery of value proposition. Superior value proposition can be achieved by understanding actual needs and demands of customers based on design thinking and comparing them to value proposition elements that are perceived as being important by customers. Following this approach, key success factors for enhancing value proposition are analyzed.
Synthesis of Acid Polyols As a Feedstock to Produce Flexible Polyurethanes and Their Effect on the Income Level of Furniture Craftsmen Andi Budirohmi; La Ifa2; Nurjannah
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 2 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v2i2.2202

Abstract

Polyuretanes are widely used as elastomers, coatings, adhesivesand binders,interior and exterior cars, furniture,shoe soles, carpets, rigit and flexible foams, membrane materials as well as constuction materials .The production of polyurethanes is largely derived from polyols derived from petroleum . Howover, petroleum is a non- renewable raw material . Thus it is necessary to look alternative feedstock for the manufacture of polyol as a polyurethane raw material. Synnthesis polyurethane by polymerization process using polyol volume based on polyol oleat acid polypropylenglycol ( PPG ) in order to know whether fatty acid can be used as raw materials of polyurethane manufacture.From the result of the study. Based on Fourier Transform Infra Red ( FTIR), showed,that the product produced is polyol with obtained hydroxyl group ( OH group )with hydroxylnumber is 129,81 mg KOH / g and 157,60 mg KOH / g sample of 70
Determination of Preventive Maintenance Time Intervals on Nail Making Machines Using Reliability Centered Maintenance (RCM) II . Method Muhammad Arizki Zainul Ramadhan; Tedjo Sukmono
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 2 No 2 (2018): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v2i2.1349

Abstract

With the increasing needs of productivity and the use of high technology in the form of machines and production facilities, the need for maintenance functions is growing. At PT. Surabaya Wire that produces nails and wires of problems that arise especially related to damage to nail making machine, it causes the hours to stop (downtime) and delay in the production process so that the engine performance becomes less effective. The purpose of the research is to determine the time interval schedule of care and know the action or maintenance activities to be done. To solve the problem in this research using Reliability Centered Maintenance (RCM) II method with Failure Modes and Effect Analyze (FMEA) calculation. RCM II defined a process used to determine what should be done for machine maintenance, whereas for FMEA it is defined as a method to identify the highest failure form on any machine malfunction. From the calculation result using FMEA and RCM II, we got treatment interval result on side shaft component (metal handlebar) with maintenance interval for 63 hours, for crank shaft component (metal road) with maintenance interval for 81 hours, and for Electric motor component with maintenance interval for 374 hours.
Product Quality Analysis Using FMEA and Fault Tree Analysis (FTA) Methods at Exotic UKM Intako Nuzul Ardiansyah; Hana Catur Wahyuni
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 2 No 2 (2018): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v2i2.2200

Abstract

Small and medium business of industrial bags and suitcases intako located in tanggulangin sidoarjo is a center producing varrious products such as bags, suitcases, and jacket in exotic store. Along with the increasing amount of production it must be coupled with the improvement of quality in order to be able to meet customer satisfaction. But in production activities often experience some obtacles one of them is product defect caused by human error and engine factor. This study uses the method Failure Mode and Effect Analysys (FMEA) to identify each stage of the process and the method Failure Tree Analisys (FTA) to find the root couse of failure . there are 6 potential failures ot the 4 production process of making bags with the highest RPN value such as sewing machine often having trouble with the value of RPN 504 and there are 12 basic event of FTA tree error depiction affecting product quality in exotic UKM intako.
Analysis of Consumer Perceptions of Food Safety Risk Aspects in the Food Supply Chain System Hana Catur Wahyuni; Wiwik Sumarmi; Ida Agustini Saidi
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 2 No 2 (2018): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v2i2.2201

Abstract

Food security has an important role in human health. Food that is not guarded can be contaminated which has a negative impact on human health. The negative impact arose due to contamination originating from various places, starting from raw materials, processes, distribution etc. In other words, contamination can be sourced from all actors chained to the supply. For this reason, consumers must be able to choose foods that are safe for consumption. This study aims to determine the extent of consumer perceptions of aspects of food safety risk. The study was conducted by distributing questionnaires and processed using one way statistics. The results of the study show that food safety is the main element that is considered in carrying out the food purchasing process.
Halal Supply Chain Traceability System Modeling in Maintaining the Integrity of Halal Food Products With Interpretive Structural Modeling (ISM) Approach Haryono Haryono; Dwi Iryaning Handayani
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 2 No 2 (2018): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v2i2.2196

Abstract

Fraud of fake halal label products does not open halal production processes about the supply chain from upstream to downstream. Therefore, in product integrity agreements, it is necessary to implement traceability in the food supply chain as an effective tool in ensuring product halalness and ensuring food products are safe. Therefore, this study tries to make a model of halal Supply Chain Traceability in the integrity agreement of halal food products. The method used in modeling the halal supply chain traceability system using Interpretive Structural Modeling (ISM). Elements of a halal supply chain tracking system, in addition to halal procurement, halal manufacturing, halal logistics, halal distribution, supplier traceability, producer traceability, logistics traceability, distribution traceability. ISM Modeling results in the integration of halal products are located in Quadran IV Driver Power with halal manufacturing, producer traceability, supplier traceability, Quadran III Strong-Very Driver Depends on Variables (Linkage), Traceability system elements of the halal supply chain that are in accordance with this Quadran will be sought integrity of halal products and has strong advantages as a driver, this quadrant contains halal procurement, traceability distribution, halal logistics. Whereas the halal supply chain traceability system that is not related to the integrity of halal products comes in. Quadran II Driver Power namely: halal logistics and distribution traceability.
Inventory Control of Nalco Water Treatment Raw Materials Using the Lot Sizing Method Masad Hariyadi; Boy Isma Putra
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 2 No 2 (2018): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v2i2.2199

Abstract

The limited supply of Nalco raw materials from producers has become a problem for PT ABC, this has led to the control of raw material inventory at PT ABC not including good management, because in the management of raw materials the company still records inventory with manual systems and in ordering raw materials only based on estimates. From the results of the study, the forecasting method used is the Double Exponential Smoothing Holt's, Brown, and Holt Winters Additive Algorithm methods, from the three methods that are most suitable is the Double Exponential Smoothing Brown method with the smallest Mean Square Error of 256.2. Calculation of Sizing Lot by using Economic Order Quantity method, Least Unit Cost method, and Silver Meal method, of the three methods the most optimal is the Economic Order Quantity method because it has the lowest cost of Rp. 12,651,145. The calculation of Safety Stock gets 17 Pail results. and for Reorder Points for Nalco Water Treatment raw material, which is 29 Pail.
Optimization of Production Amount Using Newsboy Model and Raw Material Control Planning Using Material Requirement Planning (MRP) Bagus Ismail Adhi Wicaksana; Erni Suparti
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 2 No 2 (2018): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v2i1.1918

Abstract

A company have to do inventory control for available guarantying of material, component or item at the time to fulfill production schedule, and available guarantying of product become to consumer and take care of inventory at minimum condition. As object of research is CV. Cita Nasional located in Salatiga. Problems that exist in the CV. Cita Nasional often experience shortages of raw materials caused by internal and external factors. The approach taken to solve this problem by making a production plan using the Newsboy Problem because milk products including perishable product and raw material inventory planning (MRP). From the calculation results obtained the company must produce optimal demand every Monday to Sunday. While the raw material inventory plan using Economic Order Quantity (EOQ) method. Company decreased cost for fresh milk amounting to Rp.35.526.780 and decreased raw material expense cost for whey powder amounting to Rp. 22.573.650.
Work Posture Risk Analysis Based on Evaluation Results Using the Quick Exposure Check Method Achmad Ganni Rizaldi; Atikha Sidhi Cahyana
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 5 No 2 (2021): Desember
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v5i2.1370

Abstract

UMKM XYZ is an industry engaged in making shoes, the superior product is the type of embroidered shoes. The process of making embroidery shoes requires manual handling by workers so that in the production process there are still a series of non-ergonomic work postures. The work posture assessment method used is the Quick Exposure Check (QEC). The QEC method was chosen because this method is simple and easy to understand and this method also assesses from two points of view, namely worker assessment and observer assessment. Based on this research, the recalculation of the total exposure level of the proposed improvements to work facilities is expected to obtain an exposure level value with a range of <40%. This value means the work station is safe and can reduce musculocetal injuries and increase worker productivity.
The design of the Coconut Peeling and Splitting Machine using TRIZ Method Yohanes Patrik Adventus Banda; Julius Mulyono; Hadi Santosa
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 5 No 2 (2021): Desember
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v5i2.1390

Abstract

Copra is one of the most interesting materials, is a type of coconut which is dried using a heating process. Copra is commonly used as a part of material to produce cleanser, for the human body, such as soap and shampoo. There is a big opportunity for using copra, so we need to design an equipment for supporting copra production efficiently and faster. This research aim is to help the farmers, so they can meet market needs which are increasing day by day. Copra processing still uses traditional production methods. This study aims to design a coconut stripping and splitting device using the TRIZ method. Doing a simple experiment, resulting shorter processing of coconut peeling and breaking, showed an average time of 39.65 seconds for each piece of coconut.

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