Optimizing Flow Path Design(FPD)is a popular research area in transportation system design,but its application to Overhead Transportation Systems(OTSs)has been limited.This study focuses on optimizing a double-spine f...Optimizing Flow Path Design(FPD)is a popular research area in transportation system design,but its application to Overhead Transportation Systems(OTSs)has been limited.This study focuses on optimizing a double-spine flow path design for OTSs with 10 stations by minimizing the total travel distance for both loaded and empty flows.We employ transportation methods,specifically the North-West Corner and Stepping-Stone methods,to determine empty vehicle travel flows.Additionally,the Tabu Search(TS)algorithm is applied to branch the 10 stations into two main layout branches.The results obtained from our proposed method demonstrate a reduction in the objective function value compared to the initial feasible solution.Furthermore,we explore howchanges in the parameters of the TS algorithm affect the optimal result.We validate the feasibility of our approach by comparing it with relevant literature and conducting additional tests on layouts with 20 and 30 stations.展开更多
Stonehenge,the famous stone circle in southern England,has confused historians for centuries,but researchers revealed new and unexpected information about the monuments six-ton Altar Stone.It was long believed that th...Stonehenge,the famous stone circle in southern England,has confused historians for centuries,but researchers revealed new and unexpected information about the monuments six-ton Altar Stone.It was long believed that the stone,which sits in the middle of the iconic circle,came from Wales,but new research suggests it actually came from hundreds of miles away in Scotland,raising new ques⁃tions about transportation methods from 5,000 years ago.A geological study of the Altar Stone shows it likely came from Orcadian Basin,Scotland,at least 466 miles from Stonehenge,researchers said in a study published in the journal Nature.展开更多
基金funded by Ho Chi Minh City University of Technology(HCMUT),VNU-HCM under Grant Number B2021-20-04.
文摘Optimizing Flow Path Design(FPD)is a popular research area in transportation system design,but its application to Overhead Transportation Systems(OTSs)has been limited.This study focuses on optimizing a double-spine flow path design for OTSs with 10 stations by minimizing the total travel distance for both loaded and empty flows.We employ transportation methods,specifically the North-West Corner and Stepping-Stone methods,to determine empty vehicle travel flows.Additionally,the Tabu Search(TS)algorithm is applied to branch the 10 stations into two main layout branches.The results obtained from our proposed method demonstrate a reduction in the objective function value compared to the initial feasible solution.Furthermore,we explore howchanges in the parameters of the TS algorithm affect the optimal result.We validate the feasibility of our approach by comparing it with relevant literature and conducting additional tests on layouts with 20 and 30 stations.
文摘Stonehenge,the famous stone circle in southern England,has confused historians for centuries,but researchers revealed new and unexpected information about the monuments six-ton Altar Stone.It was long believed that the stone,which sits in the middle of the iconic circle,came from Wales,but new research suggests it actually came from hundreds of miles away in Scotland,raising new ques⁃tions about transportation methods from 5,000 years ago.A geological study of the Altar Stone shows it likely came from Orcadian Basin,Scotland,at least 466 miles from Stonehenge,researchers said in a study published in the journal Nature.
