Managing Price and Fleet Size for Courier Service with Shared Drones

Omega ◽  
2021 ◽  
pp. 102482
Author(s):  
Zhi Pei ◽  
Xu Dai ◽  
Yilun Yuan ◽  
Rui Du ◽  
Changchun Liu
Keyword(s):  
Fleet Size ◽  
Courier Service

scholarly journals Recollection center location for end-of-life electric vehicle batteries using fleet size forecast: Scenario analysis for Germany

Procedia CIRP ◽  
2021 ◽  
Vol 96 ◽  
pp. 260-265
Author(s):  
Ahmet Yükseltürk ◽  
Aleksandra Wewer ◽  
Pinar Bilge ◽  
Franz Dietrich
Keyword(s):  
End Of Life ◽  
Electric Vehicle ◽  
Scenario Analysis ◽  
Fleet Size ◽  
Center Location

Scheduling a Bus Fleet for Evacuation Planning Using Stop-Skipping Method

2021 ◽  
pp. 036119812110200
Author(s):  
Hu Zhao ◽  
Shumin Feng ◽  
Yusheng Ci
Keyword(s):  
Waiting Time ◽  
Ant Colony Algorithm ◽  
Programming Model ◽  
Peer To Peer ◽  
Mathematical Programming Model ◽  
Fleet Size ◽  
Bus Stop ◽  
Passenger Demand ◽  
Service Strategies ◽  
Bus System

Sudden passenger demand at a bus stop can lead to numerous passengers gathering at the stop, which can affect bus system operation. Bus system operators often deal with this problem by adopting peer-to-peer service, where empty buses are added to the fleet and dispatched directly to the stop where passengers are gathered (PG-stop). However, with this strategy, passengers at the PG-stop have a long waiting time to board a bus. Thus, this paper proposes a novel mathematical programming model to reduce the passenger waiting time at a bus stop. A more complete stop-skipping model that including four cases for passengers’ waiting time at bus stops is proposed in this study. The stop-skipping decision and fleet size are modeled as a dynamic program to obtain the optimal strategy that minimizes the passenger waiting time, and the optimization model is solved with an improved ant colony algorithm. The proposed strategy was implemented on a bus line in Harbin, China. The results show that, during the evacuation, using the stop-skipping strategy not only reduced the total waiting time for passengers but also decreased the proportion of passengers with a long waiting time (>6 min) at the stops. Compared with the habitual and peer-to-peer service strategies, the total waiting time for passengers is reduced by 31% and 23%, respectively. Additionally, the proportion of passengers with longer waiting time dropped to 43.19% by adopting the stop-skipping strategy, compared with 72.68% with the habitual strategy and 47.5% with the peer-to-peer service strategy.

Fleet size problem for Secure Food Chain with a certain range of transportation temperature

2020 ◽  
Author(s):  
Andrii Galkin ◽  
Tkachenko Iryna ◽  
Vladyka Yulia ◽  
Natalya Shyllye ◽  
Oksana Hulchak ◽  
...  
Keyword(s):  
Food Chain ◽  
Fleet Size ◽  
Size Problem

scholarly journals Determining an Optimal Fleet Size for a Reliable Shared Automated Vehicle Ride-Sharing Service

2019 ◽  
Vol 151 ◽  
pp. 878-883 ◽  
Author(s):  
Golan Ben-Dor ◽  
Eran Ben-Elia ◽  
Itzhak Benenson
Keyword(s):  
Fleet Size ◽  
Automated Vehicle ◽  
Ride Sharing

scholarly journals Data-Driven Study on the Sustainable Log Movements: Impact of Rail Car Fleet Size on Freight Storage and Car Idling

2020 ◽  
Vol 12 (11) ◽  
pp. 4563
Author(s):  
Sangpil Ko ◽  
Pasi Lautala ◽  
Kuilin Zhang
Keyword(s):  
Service Life ◽  
Seasonal Dynamics ◽  
Lake Superior ◽  
Data Driven ◽  
Short Term ◽  
Fleet Size ◽  
Interesting Observation ◽  
The Us ◽  
Term Storage ◽  
Scale Data

Rail car availability and the challenges associated with the seasonal dynamics of log movements have received growing attentions in the Lake Superior region of the US, as a portion of rail car fleet is close to reaching the end of its service life. This paper proposes a data-driven study on the rail car peaking issue to explore the fleet of rail cars dedicated to being used for log movements in the region, and to evaluate how the number of cars affects both the storage need at the sidings and the time the cars are idled. This study is based on the actual log scale data collected from a group of forest companies in cooperation with the Lake State Shippers Association (LSSA). The results of our analysis revealed that moving the current log volumes in the region would require approximately 400–600 dedicated and shared log cars in ideal conditions, depending on the specific month. While the higher fleet size could move the logs as they arrive to the siding, the lower end would nearly eliminate the idling of rail cars and enable stable volumes throughout the year. However, this would require short-term storage and additional handling of logs at the siding, both elements that increase the costs for shippers. Another interesting observation was the fact that the reduction of a single day in the loading/unloading process (2.5 to 1.5 days) would eliminate almost 100 cars (20%) of the fleet without reduction in throughput.

scholarly journals Courier service quality from the clients’ perspective

2017 ◽  
Vol 9 (1) ◽  
pp. 36-45 ◽  
Author(s):  
Aleksandra Gulc
Keyword(s):  
Service Quality ◽  
Global Market ◽  
Research Results ◽  
Client Expectations ◽  
Measurement Tools ◽  
Weight One ◽  
Service Quality Evaluation ◽  
Courier Service ◽  
Survey Results ◽  
Measuring Scale

Abstract The aim of the study is a critical analysis of literature concerning the evaluation of courier service quality and verification if client expectations towards courier service quality change in time considering the perspective of future 5–10 years. Research methods include the theoretical analysis of scientific literature, CAWI survey and statistical analysis of obtained data. The literature overview has shown the lack of clearly defined evaluation constructs of courier service quality together with the criteria and weight, one universal commonly used measuring scale for evaluation of the service quality, diversification of methods and measurement tools for the various groups of stakeholders of courier service. Moreover, it can be concluded that the research concerning the courier service quality has not considered the problem of aging of quality indicators. Research results by the author have proved that the expectations of clients using courier service change in time, some of them are exposed to the aging process (price) while others become more important (for example tele-technologies, modern packaging, and technical facilities). Moreover, the survey results have shown that the customer opinions can be the source of interesting and innovative ideas for the development of courier service in future. The analysis of domestic and foreign literature allowed presenting the academia with an output concerning the evaluation of quality in the field of courier service. As a result, the theoretical and methodological gaps were revealed to expose potential fields for further research. The research results concerning different methods of service quality evaluation can be useful mainly for managers in courier enterprises. Moreover, the knowledge about changing expectations of clients allows adjusting courier proposals to customer needs to gain a competitive advantage in the global market.

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