共查询到17条相似文献,搜索用时 0 毫秒
1.
This paper studies the capacity and pricing choice of two congestible airports in a multi-airport metropolitan region, under transition from a pure public, centralized airport system to partial or full privatization. We develop analytical models to investigate three privatization scenarios: public–private duopoly, private–private duopoly, and private monopoly. We find that, airports follow the same capacity investment rule as prior to privatization when capacity and pricing decisions are made simultaneously. Pricing rule after privatization becomes more complicated, with additional factors having an upward effect on the privatized airport(s) and a downward effect on the remaining public airport. 相似文献
2.
The dry port concept is based on a seaport directly connected by rail with inland intermodal terminals where containers can be dealt with in the same way as if they were in a seaport. The main purpose of the article is to extend the theory behind the dry port concept and to define three dry port categories; distant, midrange and close. The findings show that the dry port concept can help identify ways of shifting freight volumes from road to more energy efficient traffic modes that are less harmful to the environment, relieve seaport cities from some congestion and facilitate improved logistics solutions for shippers in the port’s hinterland. 相似文献
3.
One of great challenges in seaport management is how to handle containers under reshuffling, called reshuffles. Repositioning reshuffles in a bay (internal reshuffling) can improve the efficiency of quay cranes and help ports to reduce ship turn-around time. This paper studies the quay crane double-cycling problem with internal-reshuffling operations, and presents a fast solution algorithm. To reduce the number of operations necessary to turn around a bay of a vessel, the problem is first formulated as a new integer program. A polynomial-time heuristic is then developed. The analysis is made on the worst-case error bound of the proposed algorithm. Results are presented for a suite of combinations of problem instances with different bay sizes and workload scenarios. Comparisons are made between our algorithm and the start-of-the-art heuristic. The computational results demonstrate that our model can be solved more efficiently with CPLEX than the model proposed by Meisel and Wichmann (2010), and the proposed algorithm can well solve real-world problem instances within several seconds. 相似文献
4.
S. Saurí E. Martín 《Transportation Research Part E: Logistics and Transportation Review》2011,47(6):1038-1057
This paper focuses on the organization of the import storage yard at container port terminals. Three new stacking strategies are introduced which take into account the containers’ arrival and departure rates and the storage yard characteristics. A mathematical model based on probabilistic distribution functions is developed to estimate the number of rehandles required to manage an import container yard. The model is applied to the three proposed stacking strategies. Results show that the optimal strategy depends on stacking height and the relationship between vessel headway and container dwell time. 相似文献
5.
In this paper, we consider the optimization of loading sequence and rehandling strategy in the terminal operation. We present an optimization strategy to minimize the number of rehandles, and establish a mathematical model to integrate the loading sequence and the rehandling strategy under the parallel operation of multi-quay cranes. Furthermore, we give an improved genetic algorithm to solve the model. We show the efficiency of the optimization strategy and algorithm by comparing them with previous strategies and heuristics. 相似文献
6.
The explosion of global container trade in the last two decades has significantly influenced the port geography of Latin America & the Caribbean (LAC), leading to a concentration of container traffic at selected ports. Theory suggests that, as port systems become mature, they tend to deconcentration, partly due to the emergence of secondary ports. Previous research has examined the region’s dominant ports, but an unanswered research question is how the evolution of this port system is influencing and being influenced by the actions of those ports currently occupying a secondary rank in the LAC port hierarchy.The methodology is based primarily on analysis of time series data on container movements between 1997 and 2012, revealing patterns of cargo flows and transhipment location choices. The institutional context of devolution processes and new investments in the region provides additional insight into the performance of selected ports. From a theoretical perspective, this analysis is situated within the context of recent institutional approaches that examine the port’s ability to act through critical moments and junctures, in order to deepen understanding of which of the various factors influencing port system deconcentration are the most sensitive to successful institutional adaptations.Results show that the manufacturing of strategic locations can be successful and may have driven the emergence of secondary ports in the LAC system. This finding demonstrates how path dependence can be challenged by new developments, the identification and success of which are nevertheless contingent on factors such as the first mover advantage, port planning regimes and diversification of port roles. The paper identifies some of the key factors influencing the transition of a port system from concentration at a few dominant ports to a deconcentrated system of primary and secondary ports, which can be applied to other port systems in future research. 相似文献
7.
In this work, a joint planning problem for berth and yard allocation in transshipment terminals is addressed. Multi-cluster stacking strategy is proposed to split each transshipment flow into a number of container clusters and then stack each cluster in different yard blocks. A mixed integer quadratic programming model is formulated to minimize the total distance of exchanging containers between mother vessels and feeders, and the workload imbalance among yard blocks. A novel three-stage heuristic solution approach is developed and extensive numerical experiments are conducted to show the effectiveness of the proposed approach and the benefit of the multi-cluster strategy. 相似文献
8.
As private participation in public airports becomes a global trend, there are a number of concerns and debates over the conflicting interests of the private and public sectors. For instance, the private sector's interest in maximizing profits often opposes the public sector's interest in protecting the public interest and social welfare. In this paper, we reframe the conflict in terms of principal-agent theory, and inform policymakers to understand public-private management problems in a broader context. Firstly, we demonstrate how various ownership and governance structures shape the private participation based on (1) ownership-type, (2) mode of ownership shift, and (3) ex-post government control. Secondly, we then highlight that this process should be context-based, and examine the recent case of Incheon International Airport (IIA) in South Korea to illustrate the importance of contextual factors. Lastly, we provide comprehensive recommendations to policymakers involved in bringing private partners into the airport sector, which include setting a clear agenda, exercising a reasonable level of control, understanding the sharing of risk and responsibility under different structures, and assessing technical, economic and political factors that may affect the policy outcome. 相似文献
9.
This study presents a transformed first-price sealed-bid auction with independent private values to determine the equilibrium royalties and subsidies in Public–Private Partnerships. The proposed model implies that royalties and subsidies are influenced by the true values bidders assign to a target project and the payoff received by a government from taking up its outside options instead of its bargaining power. In addition, such payoff is vulnerable to collusion. A real case is also detailed to show how reported signals, royalties and subsidies are determined in different cases. 相似文献
10.
This paper analyzes the spatial–temporal evolution of the attractiveness of a country’s gateway for its international trade, using Shanghai as an example. The attractiveness is regressed on the transportation facilities and geographical conditions. Seaport development is found to have a major positive impact, followed by inland waterway, highway, and airport development. These positive impacts decrease with the need for highway haulage and with the distance from Shanghai—showing an inverse U-shape distribution. Rail appears to have a U-shape distribution, implying a low application of multimodal transportation. A geographical pattern for the impacts of different transportation modes is delineated. 相似文献
11.
This study explores travel agency industry-specific barriers to imitation by first reviewing the literature on the barriers to imitation and the effects of barrier reductions on travel markets. This is the first attempt to explore and identify the external and internal barriers to imitation in the travel agency industry. It is also the first to examine the development of competitive advantages through the building of a barrier-to-imitation strategy, which is the conceptual model from the perspective of travel agency practitioners. A three-round Delphi research design was adopted to look into the present barrier-to-imitation strategy performance measures of travel agencies. Qualitative interviews with the chief executive officers of the top 15 large-scale travel agencies provided additional insights. The results show that Taiwanese travel agencies consider five external barriers, six internal barriers, and six developing barriers-to-imitation advantages, and four performance indicators of barrier strategies. This study is quite innovative in that no one else so far has analysed or tried to discern the issues of barriers to imitation, towards proposing an optimal strategic model for enforcing barriers to imitation. Finally, the construct of developing competitive advantages by building a barrier strategies model for travel agencies can help address practical and theoretical needs. 相似文献
12.
An increase in sea freight flows generates an almost proportional increase in inland freight flows, and what takes place inland will influence the ability of intermodal transport systems to further accommodate the growth of international trade. This could be facilitated by dry ports, which have been developed to support seaport operations as well as the overall operations of intermodal transport systems.The aim of this paper is to develop the Wilmsmeier et al. (2011) framework of directional development by taking into account development over time. The purpose is to contribute to the understanding of the development of seaport–dry port dyads by the analysis of two in-depth case studies from Northern Europe. A qualitative research strategy is applied to increase understanding of the development. The results contribute to earlier studies of spatial development of seaport–dry port development by taking into account development over time and by increasing the understanding of the actors, the types of dry ports and the services influencing the development of the dyads. 相似文献
13.
Inland ports have been put forward as crucial linkages for efficient global freight transport and corridor development. However, the present understanding of inland ports appears to be limited to network-based views with a maritime port focus (Outside-In), in which inland ports play second fiddle. We argue that inland ports as independent structures (Inside-Out) deserve equal consideration and that in addition to the transport dimension, the spatial, economic and institutional dimensions of inland ports are vital and should not be neglected. The goal of this paper is to apply the concept of port–city challenges to inland ports. The results of an institutional analysis of Dutch case study evidence show that challenges facing inland ports and cities take many forms but that all share a commonality in the trade-offs between positive and negative externalities. We observe different governance strategies in coping with these trade-offs and find that a proactive stance towards zoning contributes to efficiently accommodating mutually exclusive dimensions of inland port development. 相似文献
14.
Competition in the international hotel industry is increasingly global as hotels seek new ways to grow and customers have more alternatives to choose from. Globalisation could lead to bland hotel images where hotels are similar wherever they are located. They could lose their local uniqueness and authenticity. This paper presents strategies for international hotel companies to operate in the globalised market. The main issues of globalisation in the international hotel industry are also discussed and ways to optimise the implementation of operating strategies given. 相似文献
15.
Junwook Chi Won W. Koo 《Transportation Research Part E: Logistics and Transportation Review》2009,45(5):710-724
This paper examines the pricing behaviors of United States air carriers in domestic markets. With quarterly observations in 2000 and 2005, we use a heteroskedasticity-adjusted Instrumental Variable technique to investigate the carriers’ pricing strategies. The results show differential pricing strategies practiced by United States air carriers. American, United, Continental, and Northwest Airlines have higher airfares than Delta and Southwest Airlines in 2005. In 2000, all the carriers, except Delta have the same relationships with airfares. Furthermore, the findings suggest that the carriers’ pricing strategies can vary under the same market condition, indicating that carriers’ managerial decisions may influence their airfares. 相似文献
16.
Uncertainties and risks have posed significant challenges to cross-border mergers and acquisitions (M&As) in tourism. By using the cross-border M&A data from 2000 to 2020, this study examines the relationship between the national risks of the host country and equity strategies for cross-border M&As in tourism. The results show that the greater the host country's comprehensive risk and economic risk, the less inclined the tourism industry is to adopt high-equity M&A strategies, and the fewer the shares and the lower the amount of cross-border M&A transactions. Industry correlation negatively moderates the effect of national risks while institutional distance has positive moderating effect. The moderating role of cultural distance on the equity selection effect of national risks is limited. 相似文献
17.
This study analyses the effect of asset-light strategy on the dynamic efficiency of global airlines from 2008 to 2013. First, a dynamic data envelopment analysis is employed to estimate the dynamic efficiency of global airlines. Second, the degree of asset-lightness is computed by combining the concepts of the DuPont equation and financial ratios. Third, a multivariate analysis is performed to analyze the association between asset-light strategy and dynamic efficiency. The findings show that asset-light strategy significantly enables global airlines to have better corporate performance. Overall, this study suggests that global airlines should efficiently manage and allocate their light resources to sustain challenges in the dynamic global airline industry. 相似文献