Air Freight

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Tahui Yang - One of the best experts on this subject based on the ideXlab platform.

  • stochastic Air Freight hub location and flight routes planning
    Applied Mathematical Modelling, 2009
    Co-Authors: Tahui Yang
    Abstract:

    This paper introduced a stochastic programming model to address the Air Freight hub location and flight routes planning under seasonal demand variations. Most existing approaches to Airline network design problems are restricted to a deterministic environment. However, the demand in the Air Freight market usually varies seasonally. The model is separated into two decision stages. The first stage, which is the decision not affected by randomness, determines the number and the location of hubs. The second stage, which is the decision affected by randomness, determines the flight routes to transport flows from origins to destinations based upon the hub location and realized uncertain scenario. Finally, the real data based on the Air Freight market in Taiwan and China is used to test the proposed model.

  • Air Freight service network design for stochastic demand
    2009 IEEE INFORMS International Conference on Service Operations Logistics and Informatics, 2009
    Co-Authors: Tahui Yang, Chen-cheng Chen
    Abstract:

    This paper introduced a two-stage stochastic model to address the strategic Air Freight network design problems under stochastic demand. Most of existing approaches for the Airline network design problems are restricted to deterministic environment. However, the demand in Airline market usually varies seasonally. The first stage of the proposed model is to determine the number and the location of hubs. The second stage consists of deciding the flight routes to transport flows from origins to destinations in an optimal fashion based upon the hub location and realized uncertain scenario. Finally, the data from Air passenger market in Taiwan and China is used to test the proposed model.

Yixiang Zhang - One of the best experts on this subject based on the ideXlab platform.

  • integration and consolidation in Air Freight shipment planning an economic and environmental perspective
    Journal of Cleaner Production, 2017
    Co-Authors: Guanghui Zhou, Yixiang Zhang
    Abstract:

    Abstract Measuring carbon footprint and controlling carbon emissions across a supply chain have gained considerable attention. This study investigates the effects of carbon emissions within the framework of Air Freight integrator shipment planning, with integration and consolidation. A mixed 0–1 Linear Programming (LP) model is formulated to examine the effects of operational adjustments on carbon emissions and cost performance, as well as the effects of carbon emissions regulations on operational decisions. Sensitivity analysis is performed to examine different carbon emissions policies and operational environments. Reducing carbon emissions through operational adjustments is feasible at the expense of some increase in cost. Thus, reducing carbon emissions may be considered an alternative or a supplement to more costly carbon-reducing technologies. Policies implemented to control carbon emissions can affect operational decisions when carbon tax/price is high enough.

Janina Js Scheelhaase - One of the best experts on this subject based on the ideXlab platform.

  • International and National Political Regulations of Aviation’s Climate Impact and Cost Impacts on Air Freight
    Advances in Airline Economics, 2014
    Co-Authors: Janina Js Scheelhaase
    Abstract:

    Abstract This chapter provides an overview of the current political regulations on aviation’s climate relevant emissions in Europe, Australia, and New Zealand and of the planned regulations in other parts of the world. In a next step, the cost impacts of most of these regulations on Air Freight will be quantified. This way, the economic impacts of environmental regulations on Air Freight can be estimated.The main results indicate that cost impacts on Air Freight services induced by political measures for the reduction of aviation’s climate relevant emissions turn out to be small. This is true for both local emission charges on nitrous oxide (NO X ) and hydrocarbon (HC) emissions which are in force at a number of European Airports and the European emissions trading scheme for the limitation of CO2 emissions.

  • Political Regulations of Aviation's Climate Impact and Cost Impacts on Air Freight
    2013
    Co-Authors: Janina Js Scheelhaase
    Abstract:

    Aviation’s impact on climate change is a substantial: Airplanes emit carbon dioxide (CO2) and short-lived species such as nitrogen oxide (NOX) or contrails, all of which are influencing climate change. In addition, the aviation sector is expected to grow significantly in the medium and long term. According to Airbus (2012), global Air Freight traffic is expected to grow at 4.9 per cent annually in the timeframe 2011-2031. Meanwhile, aviation’s carbon dioxide emissions have been regulated in Europe, Australia and New Zealand by emissions trading schemes. Charges on local NOX emissions have been applied at a number of European Airports. This paper investigates the current political regulations on aviation’s climate relevant emissions in the world and their impacts on Air Freight costs. Results indicate that cost impacts on Freight induced by political measures are small. This is true for both local NOX charges and the European emissions trading scheme. For instance, for an A330-200 total Airport charges are raised by the NOX emission charge by 3.97 per cent respectively €216.66 in absolute terms per landing at the maximum. If a 50:50 cost allocation between passengers and bellyhold cargo is assumed, the cargo costs are increased by €0.0054 per kg.

Cordula Neiberger - One of the best experts on this subject based on the ideXlab platform.

Aisling J Reynoldsfeighan - One of the best experts on this subject based on the ideXlab platform.

  • comparative analysis of Air Freight networks in regional markets around the globe
    2013
    Co-Authors: Aisling J Reynoldsfeighan
    Abstract:

    This chapter examines the Asian, European, North American and Middle East Air Freight networks of combination passenger and Freight and all-Freight carriers using Air Freight capacity datasets for the period 1999–2009. The chapter begins by reviewing some of the key trends that have shaped and characterized Air Freight markets during the 1990 and 2000s. The impact of Air transport market liberalization is identified as a key determinant of changing carrier behavior, particularly in relation to network structure organization. The second major section of the chapter examines the sources of data available for tracking trends in the Air Freight sector. The lack of comprehensive datasets detailing the activities of the integrated carriers is discussed. Using the Official Airline Guide (OAG) historical databases that list ex-post carrier schedules for each year globally, annual data series indicating Freight capacity of all Asian, European and North American and selected Middle Eastern carriers are determined and the general trends are described. The US T-100 Database is used to derive an equivalent distribution for the two largest integrated carriers, FedEx and UPS. The changing nature of industry organization is discussed and the key players in each region are distinguished. For the combination carriers, passenger and Freight network structures are compared for the period 1999–2009. The fortunes of the key Air Freight hubs are reviewed over the same period. The chapter concludes with a discussion about the key driving factors in dictating the future direction of the industry in the coming decade. Consolidation in the Airline industry and the role of the integrated carriers receive particular consideration.

  • the e u and u s Air Freight markets network organization in a deregulated environment
    Transport Reviews, 1994
    Co-Authors: Aisling J Reynoldsfeighan
    Abstract:

    Network aspects of the U.S. and E.U. Air Freight industries are examined. Distinctions between passenger and Freight operations are made and the important role of an Air carrier's network is discussed. In the U.S.A. after Air cargo deregulation in 1977, all‐cargo carriers greatly increased their share of the Air Freight market by diversifying the range of Air Freight products offered and by developing multimodal networks. The all‐cargo operators organized their networks around single hub while the combination passenger/cargo carriers have developed interactive hub‐and‐spoke systems based around several regional hubs. These networks have evolved more for passenger needs than for cargo needs. The traffic distributions for several of the E.U. ‘flag carriers’ are then analysed. The E.U. carrier's network is typically a single hub operation, largely because regulations up until 1993 have prevented the development of hubs outside of the national territory. The liberalization of Air transport now permits carrier...

  • ec and us Air Freight markets network organisation in a deregulated environment
    1993
    Co-Authors: Aisling J Reynoldsfeighan
    Abstract:

    In this paper, network aspects of the US and EC Air Freight industries are examined. Distinctions between passengers and Freight operations are made and the important role of Air carrier's network is discussed. In the US after Air cargo deregulation in 1977, all cargo carriers greatly increased their share of the Air Freight market by diversifying the range of Air Freight products offered and by developing multi modal networks. The all-cargo operators organised their networks around single hubs while the combination passenger/cargo carriers have developed interactive hub-and-spoke systems based around several regional hubs. These networks have evolved more for passenger needs than for cargo needs.