Research Paper Statistical Process
Quality improvement of molding machine through statistical process control in plastic industry

Teuku Mirwan Saputra; Hernadewita Hernadewita; Akmal Yudha Prawira Saputra; Lien Herliani Kusumah; Hermiyetti ST

Volume 6, Issue 2 , June 2019, Pages 87-96

  Enhancing the process capability is a must in quality improvement of process manufacturing in the industry. Usually, Statistical Process Control (SPC) is applied in measure the activity of quality improvement. In this case, the statistical process control used to measure the process capability of molding ...  Read More

Research Paper Manufacturing and Logistics
Identification, mitigation of bottleneck by capacity addition and economic analysis for copper cable production process: a case study

Aurpon Tahsin Shams; Kamrul Hasan

Volume 6, Issue 2 , June 2019, Pages 97-107

  A bottleneck machine in a production line will reduce the productivity of the whole. The results of having a bottleneck are stalls in production, supply overstock, pressure from customers, and low employee morale. This paper focuses on the identification of the bottleneck in the production process of ...  Read More

Research Paper Renewable Energy
The extension analysis of natural gas network location-routing design through the feasibility study

Filscha Nurprihatin; Agnes Octa; Tasya Regina; Tony Wijaya; Julliete Luin; Hendy Tannady

Volume 6, Issue 2 , June 2019, Pages 108-124

  From 2001 to the present, natural gas production in Indonesia dominates petroleum production. Most of the natural gas is used for export until 2013. From 2014 until now, most of the natural gas production is being utilized for domestic with an increasing trend. Domestic gas usage for households is still ...  Read More

Research Paper Other
Contribution of quality tools for reducing food waste in university canteen

Abdella Yimam Ali; Andarge Ayele

Volume 6, Issue 2 , June 2019, Pages 125-130

  The aim of this paper is to implement the quality tools for reducing food waste in Woldia University (WU) canteen (Ethiopia). Universities are one of the main sources of food waste among food catering industries. In WU canteen, it is observed that most of the generated food wastes are goes to landfill. ...  Read More

Research Paper Industrial Mathematics
An efficient nonlinear programming method for eliciting preference weights of incomplete comparisons

Mohamad Ali Movafaghpour

Volume 6, Issue 2 , June 2019, Pages 131-138

  The Analytic Hierarchy Process (AHP) which was developed by Saaty is a decision analysis tool. It has been applied to many different decision fields. Acquiring Pairwise Comparison Matrices (PCM) is the main step in AHP and also is frequently used in other multi-criteria decision-making methods. In a ...  Read More

Research Paper Fuzzy optimization
A new approach to solve fully fuzzy linear programming problem

Faranak Mahmoudi; Seyed Hadi Nasseri

Volume 6, Issue 2 , June 2019, Pages 139-149

  Today, human decisions are more than ever based on information. But most of this information is not definitive, and in this situation, logical decision making is very difficult based on this uncertainty. Different methods are used to represent this uncertainty, including the fuzzy numbers. The fuzzy ...  Read More

Research Paper Other
Development of an automated obstacle detector for blind people

Chandan Debnath

Volume 6, Issue 2 , June 2019, Pages 150-160

  Eyes play a vital role in our life. Usually, all of us have seen the visually impaired people and know the problems that they face in their daily life. In order to detect the obstacles, blind people use sticks when they are walking but this instrument just can help them find objects on the ground. Obstacle ...  Read More