Discrete space-based route planning for rotary-wing UAV formation in urban environments

Author(s):  
Yu Wu ◽  
Kin Huat Low
2019 ◽  
Vol 338 ◽  
pp. 307-320
Author(s):  
Jiangtao Kong ◽  
Jian Huang ◽  
Hongkai Yu ◽  
Hanqiang Deng ◽  
Jianxing Gong ◽  
...  

2020 ◽  
Vol 12 (1) ◽  
pp. 425 ◽  
Author(s):  
Ivan Sanchez-Diaz ◽  
Laura Palacios-Argüello ◽  
Anders Levandi ◽  
Jimmy Mardberg ◽  
Rafael Basso

This paper uses data from a major logistics service provider in Gothenburg (Sweden) to (i) identify the different activities in a typical urban distribution tour, (ii) quantify the time required by drivers to perform each of these activities, and (iii) identify potential initiatives to improve time efficiency. To do so, the authors collected GPS data, conducted a time-study of the activities performed by the drivers for a week, conducted a focus group with the drivers, and a set of interviews with managers. The results show that driving represents only 30% of the time, another 15% is spent on breaks, and the remaining 55% is used to perform activities related to customer service, freight handling, and planning. The latter are subdivided into multiple activities, each taking a small amount of time. A focus group with the drivers and some interviews revealed several initiatives to improve time efficiency. Most initiatives can bring small gains, but when aggregating all potential time savings there is a big potential to improve overall time efficiency. Initiatives with highest potential and low cost are: providing better pre-advice on upcoming customers, improving route planning, having hand-free cell phone use, and enhancing handling equipment.


2017 ◽  
Vol 18 (4) ◽  
pp. 869-879 ◽  
Author(s):  
Eric Hsueh-Chan Lu ◽  
Huan-Sheng Chen ◽  
Vincent S. Tseng

2014 ◽  
Author(s):  
Chrono Nu ◽  
Katie Mullin ◽  
Hailey Edwards ◽  
Kailey Kornhauser ◽  
Russell Costa ◽  
...  

TERRITORIO ◽  
2020 ◽  
pp. 148-163
Author(s):  
Luca Fondacci

In the 1970s, the fragile historical centre of the city of Perugia was a key area where the binomial of sustainable mobility and urban regeneration was developed and applied. At the turn of the xxi century, the low carbon automatic people-mover Minimetrò broadened that application from the city's historical centre to the outskirts, promoting the enhancement of several urban environments. This paper is the outcome of an investigation of original sources, field surveys and direct interviews, which addresses the Minimetrò as the backbone of a wide regeneration process which has had a considerable impact on the economic development of a peripheral area of the city which was previously devoid of any clear urban sense. The conclusion proposes some solutions to improve the nature of the Minimetrò as an experimental alternative means of transport.


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