Grey Systems: Theory and Application: Volume 10 Issue 2

A novel synthetic index of two counts and mathematical model for researcher evaluation

Sifeng Liu, Qi Li, Yingjie Yang

The purpose of this paper is to present a novel synthetic index of two counts and mathematical model for researcher evaluation.

A novel model for risk management of outsourced construction projects using decision-making methods: a case study

Amin Mahmoudi, Mehdi Abbasi, Xiaopeng Deng, Muhammad Ikram, Salman Yeganeh

Selecting a suitable contract to outsource construction projects is an ongoing concern for project managers and organizational directors. This study aims to propose a…

Identifying the factors of China's seasonal retail sales of consumer goods using a data grouping approach–based GRA method

Zheng-Xin Wang, Ji-Min Wu, Chao-Jun Zhou, Qin Li

Seasonal fluctuation interference often affects the relational analysis of economic time series. The main purpose of this paper is to propose a new grey relational model for…

A dual simplex method for grey linear programming problems based on duality results

Davood Darvishi Salookolaei, Seyed Hadi Nasseri

For extending the common definitions and concepts of grey system theory to the optimization subject, a dual problem is proposed for the primal grey linear programming problem.

Impact analysis and classification of aircraft functional failures using improved FHA based on grey evaluation

Yuhang Zhang, Chang Liu, Tingting Xu, Yan Huang, Liangyan Tao

The technical level of aircraft failure analysis plays a special role in ensuring the safety of civil aviation flight. Using appropriate methods for functional failures analysis…

Parametric optimization of USM parameters by Taguchi and NSGA-II for the development of µ-channels on pure titanium

Rahul Dev Gupta, Pardeep Gupta, Rajesh Khanna

This paper consolidates and presents the results of a work conducted to fabricate micro-channels on titanium grade-2 material by ultrasonic machining process (USM). In this…

A bi‐objective inventory routing problem with interval grey demand data

Ömer Utku Kahraman, Erdal Aydemir

The purpose of this paper is to manage the demand uncertainty considered as lower and upper levels for a medium-scale industrial distribution planning problem in a biobjective…

Forecasting Pakistan's electricity based on improved discrete grey polynomial model

Dang Luo, Muffarah Ambreen, Assad Latif, Xiaolei Wang

Electricity plays an important role in the economic condition of any country. Nowadays, Pakistan is badly affected by shortage of electricity, which directly affected the economic…

Parametric optimization of EDD using RSM-Grey-TLBO-based MCDM approach for commercially pure titanium

Neeraj Sharma, Neeraj Ahuja, Rachin Goyal, Vinod Rohilla

Electric discharge drilling (EDD) is used to drill quality microholes on any conductive materials. EDD process parameters play a crucial role in the drilling. Depending upon the…