Because of their unique physical and chemical properties, Rare earth elements (REEs) perform important functions in our everyday lives, with use in a range of products. Recently, the study of China’s rare earth elements production has become a hot topic of worldwide interest, because of its dominant position in global rare earth elements supply, and an increasing demand for rare earth elements ...

In developing countries, the contradiction between environmental protection and economic development has become increasingly serious. The current research focuses on: how to coordinate relationship protection. This study considers energy consumption emission reduction as object. An energy–economy–environment simulation system was developed using Vensim a modeling platform clarify consumption, d...

With China's continuous opening to the outside world, changes in international environment and operation of cross-border RMB settlement system (CIPS), scale has fluctuated continuously. In response this phenomenon, authors collected sorted out total amount payments from 2011 2020 time sequence data China, then use five AR models including ARMA, GARCH(1.1), EGARCH(1.1), PARCH(1.1), CARCH(1.1) fi...

The popularization of smartphones and the acceleration their replacement lead to a surge in mobile phone disposal. How recycle waste phones efficiently becomes major problem today's society. The "Internet +" recycling mode is an effective way solve this problem. process involves retailers, manufacturers, third parties other parts. Retailers have natural advantages compared with parts...

Penelitian ini bertujuan untuk menganalisis bagaimana adaptasi konsultasi kesehatan online menggunakan telemedicine di era pandemi COVID-19. Pada dunia tanpa disadari telah memasuki Revolusi Industri 4.0 Pandemi COVID-19 mengakibatkan keterbatasan masyarakat mengakses fasilitas kesehatan. Selain karena rasa takut datang ke kesehatan, jumlah kunjungan dan jam praktek dokter juga dibatasi. pendek...

The Failure Mode and Effect Analysis (FMEA) is often used to improve a system’s reliability. This paper proposes new approach that aims overcome the most critical defects of traditional FMEA. methodology combines Entropy Best Worst Method (BWM) with EDAS System Dynamics, FMECA: EN-B-ED Dynamic FMECA. main innovation point proposed work presence an unknown factor (Cost) allows obtain objective w...