摘要(英) |
Abstract
In recent years, international air express services have grown rapidly. The markets become very competitive for the carriers. Since air express services rather emphasize on time-definite deliveries, it is important for carriers to efficiently to collect, classify and assembly cargos at every service station. In which, the cargo container loading operation, in general, significantly affects the total operating time and cost. As a result, how to determine a suitable cargo container loading plan in order to minimize the operating cost is an important issue for air express carriers. Since the cargo container loading plan is related to the operating cost of each airport and the hub, which is further nonlinearly correlated with the assignment of cargos to pure/mixed containers, the cargo quantity and their allowable operating times, the cargo container loading plan problem is very complicated. However, the current cargo container loading plan in practice is solved manually with staff’s experience, which is neither effective nor efficient, especially for the environment of large hubs and complicated network operations today. As to academics, there has not yet research found on the cargo container loading plan problem of international air express cargos. Therefore, on the basis of the international air express carriers’ perspective, this research develops a cargo container loading plan model, with the objective of minimizing total cost, subject to related operating constraints. The model is a useful planning tool for International air express carriers to decide on their cargo loading plans in order to lower their operating costs, so that their profits and market competitiveness can be enhanced. The model is formulated as a nonlinear mixed integer program that is characterized as NP-hard and is more difficult to solve than integer linear programs, especially for realistically large-scale problems that cannot be optimally solved in a reasonably short time. Since the model’s objective contains nonlinear ladder-functions, we convert them into piece-wise linear functions. Furthermore, we employ C computer language, coupled with a mathematical programming solver, CPLEX, to develop an efficient algorithm to solve the problem. To evaluate the model and the solution algorithm, we perform a case study using real operating data from an international air express carrier. The results are good. |
參考文獻 |
1.經濟部商業司,「中正機場物流發展現況及趨勢」,2000中華民國物流年鑑,頁423。
2.王怡真,「國際快遞業一般化航空路網設計之研究」,國立成功大學交通管理研究,碩
士論文,2003。
3.王鼎欽,「航空貨運承攬業建構電子商務及其對經營績效影響之研究」,國立海洋大學
航運管理學系碩士論文,2000。
4.田邦廷,「長方體物件堆疊問題解法之研究」,大葉大學工業工程研究所碩士論文,
2001。
5.李俊勳,「航空公司貨運網路航線頻次與機型規劃之研究」,國立交通大學運輸工程與
管理系碩士論文,1999。
6.林正章、許瓊文,「當日快遞路運網路設計之研究」,運輸學刊,第十一卷,第二期,
頁61-85,1999。
7.高秀如,「以資源基礎觀點探討航空貨運承攬業核心能力及其對營運績效影響之研
究」,國立海洋大學/航運管理學系碩士論文,2001。
8.高傳凱,「貨櫃儲存場堆積策略模擬與儲位指派模式構建」,國立交通大學交通運輸研
究所博士論文,2002。
9.高傳凱、藍武王,「減少貨櫃場內不具生產力動作之貨櫃儲位指派模式」,交通運輸,
第十九期,頁30-39,2000。
10.張美忠,「貨物運輸棧板裝載問題啟發式解法之應用」,國立交通大學土木工程研究所
碩士論文,中華民國八十年。
11.張斐茹,「軸輻路網模式在定期貨櫃船定線之應用」,運輸計劃季刊,第三十卷,第四
期,頁 871 -890,2001。
12.許巧鶯,王志青,「軸幅航空貨運網路之直接與轉運路線選擇」,運輸計劃季刊,第二
十六卷,第一期,頁95-118,1997。
13.許巧鶯、蕭國洲,「廠商以航空貨運中心為轉運站之研究」,運輸計劃季刊,第二十七
卷,第二期,頁213-244,1998。
14.陳世欽,「多時效性貨物需求下貨機飛航排程暨班次表建立之研究」,國立中央大學土
木工程學系碩士論文,2003。
15.陳俊豪,「即時資訊下軸輻式網路效率評估」,逢甲大學交通工程與管理學系碩士論
文,2002。
16.陳春益、邱明琦、林佐鼎,「貨櫃排程模式之研究」,運輸計劃季刊,第三十一卷,第
三期,頁495-522,2002。
17.游至誠,「允許集貨港與軸心港不直接相連之海運軸輻路網模式」,交通大學運輸工程
與管理研究所碩士論文,2001。
18.鄭明仁,「模糊績效評估之應用-以評估航空貨運承攬業的績效為例」,國立海洋大學
航運管理學系碩士論文,1999。
19.鄧景豐,「單一貨櫃排貨系統」,國立清華大學工業工程與工程管理學系碩士論文,
1999。
20.顏上堯、王中瑞,「多目標飛航網路路線及頻次規劃」,工業工程學刊,第十三卷,第
四期,頁307-316,1996。
21.顏上堯、黃武強,「配合轉運忠心之飛航定線與航次頻率規劃」,運輸計劃季刊,第二
十五卷,第四期,頁681-708,1996。
22.Aykin, T., “Lagrangian relaxation based approach to capacitated hub-and-
spoke network design problem,” European Journal of Operational Research,
Vol. 79, pp 501-523, 1994.
23.Aykin, T., “On the location of hub facilities,” Transportation Science,
Vol. 22, pp.155-157, 1988
24.Aykin, T., “The Hub Location and Routing Problem,” European Journal of
Operational Research, Vol. 83, pp. 200-219, 1995.
25.Bryan, D. L. and O’Kelly, M. E., “Hub-and-spoke network in air
transportation: an analytical review,” Journal of regional Science,
Vol.39, pp.275-295, 1999.
26.Chestler, L, “Overnight Air Express: Spatial Pattern, Competition and the
Future of Small Package Delivery Services,” Transportation Quarterly,
Vol. 39, pp.59-71, 1985.
27.Chou Y. H, “The Hierarchical-Hub Model for Airline Networks,”
Transportation Planning and Technology, Vol. 14, pp.243-258, 1990.
28.Current, J. R., Revelle, C. S. and Cohon, J. L., “The hierarchical network
design problem,” European Journal of Operations Research, Vol.2, pp.57-
66,1986.
29.Hall, R. W., “Configuration of an overnight package air network,”
Transportation Research, Vol. 23, pp.139-149, 1989.
30.Jaillet, P., Gao, S. and Gang, Y., “Airline network design and hub location problems,” Location Science, Vol. 4, pp.195-212, 1996.
31.Lin, C. C. and Chen, Y. C., “The integration of Taiwanese and Chinese air
networks for direct air cargo services,” Transportation Research, Vol. 37,
pp. 629-647, 2003.
32.Lin, C. C., Lin, Y. J, and Lin, D.Y, “The economic effects of center-to-
center directs on hub-and-spoke networks for air express common
carriers,”Journal of Air Transport Management, Vol. 9, pp.255-265, 2003.
33.Lin, C. C; “The freight routing problem of time-definite freight delivery
common carriers,” Transportation Research Part B, Vol. 35, pp.525-547, 2001.
34.Nero, G., “A note on the competitive advantage of large hub-and-spoke
networks,” Transportation Research, Vol.35, pp.225-239, 1999.
35.O’Kelly, M. E., “A Quadratic Integer Program for the Location of
Interacting Hub Facilities,” European Journal of Operational Research, Vol. 32, pp. 393-404, 1987.
36.O’kelly, M. E., “The Location of Interacting Hub Facilities,”
Transportation Science, Vol.20, No.2, pp.92-106, 1986.
37.Prokop, D., “The logistics of air cargo co-mingling at Ted Stevens
Anchorage International Airport,” Journal of Air Transport Management, Vol.
8, pp.109-114, 2002.
38.Powell, W. B. and Sheffi, Y. , “Design and implementation of an
interactive optimization system for network design in the motor carrier
industry, ” Operations Research, Vol.37, No.1, pp.12-29, 1989.
39.Sohn, J. and Park, S., “linear program for the two-hub location problem,”
European Journal of Operational Research, Vol. 100, pp. 617-622, 1997.
40.Sue, A. H, “A hybrid heuristic for the incapacitated hub location
problem,” European Journal of Operational Research, Vol. 106, pp.489-499,
1998.
41.Xue, J. and Lai, K. K., “A Study on Cargo Forwarding Decision,” Computers
& Industrial Engineering, Vol. 33, pp. 63-66, 1997.
42.Zhang, A. and Zhang , Y., “A model of air cargo liberalization: passenger
vs. all-cargo carriers”, Transportation Research Part E ,Vol. 38, pp.175-
191, 2002.
43.Zhang, A., “Analysis of an international air-cargo hub: the case of Hong
Kong” Journal of Air Transport Management, Vol. 9, pp.123 -138, 2003. |