Expediting is becoming more essential with the increase of engineering construction projects by Chinese companies abroad.According to Xinhua News Agency,from 2013 to 2018,Chinese enterprises’direct investment in coun...Expediting is becoming more essential with the increase of engineering construction projects by Chinese companies abroad.According to Xinhua News Agency,from 2013 to 2018,Chinese enterprises’direct investment in countries along the Belt and Road(B&R)exceeded USD 90 billion,with an average annual growth rate of 5.2%.For countries along B&R,the value of Engineering Procurement Construction(EPC)projects signed with Chinese companies exceeded USD 600 billion,which is an average annual increase of 11.9%.展开更多
Due to the long operation cycle of maritime transportation and frequent fluctuations of the bunker fuel price, the refueling expenditure of a chartered ship at different time or ports of call make significant differen...Due to the long operation cycle of maritime transportation and frequent fluctuations of the bunker fuel price, the refueling expenditure of a chartered ship at different time or ports of call make significant difference. From the perspective of shipping company, an optimal set of refueling schemes for a ship fleet operating on different voyage charter routes is an important decision. To address this issue, this paper presents an approach to optimize the refueling scheme and the ship deployment simultaneously with considering the trend of fuel price fluctuations. Firstly, an ARMA model is applied to forecast a time serials of the fuel prices. Then a mixed-integer nonlinear programming model is proposed to maximize total operating profit of the shipping company. Finally, a case study on a charter company with three bulk carriers and three voyage charter routes is conducted. The results show that the optimal solution saves the cost of 437,900 USD compared with the traditional refueling scheme, and verify the rationality and validity of the model.展开更多
文摘Expediting is becoming more essential with the increase of engineering construction projects by Chinese companies abroad.According to Xinhua News Agency,from 2013 to 2018,Chinese enterprises’direct investment in countries along the Belt and Road(B&R)exceeded USD 90 billion,with an average annual growth rate of 5.2%.For countries along B&R,the value of Engineering Procurement Construction(EPC)projects signed with Chinese companies exceeded USD 600 billion,which is an average annual increase of 11.9%.
基金Supported by the National Natural Science Foundation of China(71303026)China Postdoctoral Science Foundation(2015M580128)+2 种基金Liaoning Natural Science Foundation(2015020074)Higher Education Development Fund(for Collaborative Innovation Center)of Liaoning(20110116102)Teaching Reform Fund of Dalian Maritime University(2014Y18)
文摘Due to the long operation cycle of maritime transportation and frequent fluctuations of the bunker fuel price, the refueling expenditure of a chartered ship at different time or ports of call make significant difference. From the perspective of shipping company, an optimal set of refueling schemes for a ship fleet operating on different voyage charter routes is an important decision. To address this issue, this paper presents an approach to optimize the refueling scheme and the ship deployment simultaneously with considering the trend of fuel price fluctuations. Firstly, an ARMA model is applied to forecast a time serials of the fuel prices. Then a mixed-integer nonlinear programming model is proposed to maximize total operating profit of the shipping company. Finally, a case study on a charter company with three bulk carriers and three voyage charter routes is conducted. The results show that the optimal solution saves the cost of 437,900 USD compared with the traditional refueling scheme, and verify the rationality and validity of the model.
