Grouping behavior is an important element which affects pedestrian group-moving behavior significantly. Current studies only give a few discussions on how grouping behavior affects pedestrian counter flow, while the effect of grouping behavior on evacuation flow is largely ignored. Here we...

A growing body of literature has focused on the potential determinants of the green energy transition. This study is probably the first study to be conducted on a global sample of 214 countries/regions between 1960 and 2017. Empirical evidence supports a strong causal relationship between...

The coal type of high-volatile bituminous coal (HBC) is an important component of coalbed methane (CBM) reservoirs in China. Moreover, the accurate characterization of pore structures of coal is crucial to the exploration and development of CBM. In this work, the pore structure of vitrain and...

Innovation research has been an increasing trend and showed a rapid interest for scholars in recent years. How innovation literature develops in business and economics and what characteristics they present before and after COVID-19 pandemic are problems is explored here. To address these topics,...

A preliminary method for determining acceptable trace element levels in coal was established. In addition to the conventional coal quality parameters ash and sulfur, potentially hazardous trace elements As, Be, Cd, Cl, Cr, F, Hg, Mn, Ni, Pb and Se were selected for the evaluation, and their...

We propose a cellular automation model to simulate team-moving behavior in bi-directional pedestrian flow. The moving rules for double-pedestrian teaming include the constraint that pedestrians remain on adjacent cells. Phase transition, critical density — team number, velocity–density, and...

Purpose This paper aims to provide a better understanding of the challenges and potential solutions in Visual Simultaneous Localization and Mapping (SLAM), laying the foundation for its applications in autonomous navigation, intelligent driving and other related domains....