基于级库存模式的集中需求信息对供应链牛鞭效应的影响研究

通过分析级库存模式下库存逐级放大的形成机理,研究集中需求信息对供应链牛鞭效应的影响.基于级库存管理模式的视角,采用控制变量的方法,分别计算当实际需求值引用次数、供应链阶段数和提前期发生变化时,集中需求信息和分散需求信息供应链中牛鞭效应数量值的变化幅度,并对两者进行比较.研究结果表明,集中需求信息的供应链能够有效地抑制需求扭曲的程度,降低牛鞭效应的影响.     

Low-cost carriers versus full service carriers in ASEAN: The impact of liberalization policy on competition

This study analyses the ASEAN Single Aviation Market (ASAM) policy to be introduced by the end of 2015. We conduct a scenario study to estimate the impact of low-cost carrier (LCC) network expansion under liberalized air transport policies in the ASEAN region. Establishing joint ventures is a possible way for foreign carriers to expand the network in this region, even after starting ASAM. This is unique as joint ventures are not only subsidiaries of the full-service carriers, as is the case in the United States and Europe. We also apply a quantitative air transport market model to estimate the policy impact of the entry of new LCCs on routes from three ASEAN hub airports to Manila airport, which covers the impact on the whole network. The model produces several significant results, including that the entry of one LCC on one route may affect the fare, frequency, and profitability of related competitive routes for the entire network.     

A tale of airline competition: When full-service carriers undercut low-cost carriers fares

The pricing of low-cost carriers (LCCs) compared with traditional airlines has been extensively investigated since their inception in the air transport market. Abundant empirical evidence attests that, on average, LCCs' fares (per km) are lower than those usually offered by full-service carriers (FSCs). Such literature, however, paid virtually no attention to the conditions under which LCCs lose their convenience compared to traditional airlines. The purpose of this study is to investigate the occurrence of LCCs sometimes offering higher fares than FSCs on competing flights. By using a dataset expressly collected for this purpose, we are able to quantify its frequency and suggest some possible explanations. These findings concur to cast some questions on the widely held preconception of vertical differentiation between LCCs' and FSCs’ offered services. Further research will be needed in order to understand the relative weight of the suggested factors.     

The airfare pricing and seat allocation problem in full-service carriers and subsidiary low-cost carriers

This study investigates the competitive market situation in the air transport industry considering full-service carriers (FSC), subsidiary low-cost carriers (LCC) and rival LCCs on the flight-leg level while subsidiary LCCs are established by FSCs against rival LCCs to keep the market share and to make more profit. It is assumed that the demand of economy class for each airline follows a known distribution, and the mean value of that distribution is a function of its airfare and the airfare differences with other airlines. In addition, no-shows and cancellations are introduced to reflect a real situation. Based on this situation, a mathematical model is developed to derive efficient airfare pricing and seat allocation for each airline for maximizing the profit sum of both FSCs and subsidiary LCCs using a repeated game. A repeated game model integrated with a Tabu search algorithm and an EMSR based heuristic is suggested to deal with the proposed repeated game. A numerical example is provided to validate the model and solution procedure with hypothetical system parameter values under two kinds of market situations that show before and after the emergence of subsidiary LCCs.     

Evolving competition between low-cost carriers and full-service carriers: The case of South Korea

This study explores the impact of domestic low-cost carriers (LCCs) on regional tourism and aviation industries. In particular, it articulates the changing competitive dynamics between LCCs and full-service carriers (FSCs). The Lotka-Volterra (LV) model, utilising the newly proposed moving-window concept, is used for the assessment of the influence of LCCs on the South Korean and airline industry. Analysis results demonstrate that the competitive dynamics between LCCs and FSCs are not static and have evolved over time. The study proposes an efficient and effective change analysis and enables strategic planning for aviation industries.     

Base abandonments by low-cost carriers

This paper is the first attempt to systematically investigate the phenomenon of base abandonments by low-cost carriers (LCCs) in the world, from 1997 to 2014. Our results identify 109 cases where the LCCs decreased their presence in airports by at least 50 per cent in terms of offered seats. In 28 cases, the LCCs completely abandoned the airports. The incidence of downsizing is significantly reduced for important base airports. The abandonment by LCCs can be reversed, even though this is not very likely; in only 7.3 per cent of cases the same LCCs recovered full capacity. The impact on airports of LCC abandonments depends on the carrier level of dominance. The presence of middle size alternative airports increases the likelihood of downsizings.     

The impact of low cost carriers on Korean Island tourism

Given the mixed findings of extant research on the impact of low-cost carriers (hereafter LCC) on aviation markets (with some studies showing stimulation of new demand, other studies showing LCCs encroaching on the turf of full-service carriers), the emergence of LCCs in Korea raised an interesting question as to whether or not they actually contribute to overall growth in domestic air traffic. The literature has paid limited attention to this issue so far. Employing a multivariate regression analysis with monthly data from 2000 to 2009, the impact of LCCs on tourism demand to a popular destination in Korea, Jeju Island, is examined, focusing on two specific questions: Have LCCs generated new tourism demand and brought more tourism revenue into the island’s economy? Have LCCs mitigated tourism seasonality on the island? Controlling for the effects of a number of factors, results showed that LCCs have generated new demand in addition to existing tourist flows to the island. Korean LCCs accounted for 35% of total passengers in 2009, which indicates an average growth rate of 161.7% over the last 4 years, compared to a −0.3% growth rate for all full-service carriers in Korea. However, LCCs seem to have had little impact on reducing seasonal fluctuations in passenger traffic to Jeju Island. The findings of this study will be of interest to researchers, policy makers, and a variety of stakeholders in the tourism industry interested in the relationship between no-frills airlines and island economies.     

Opaque Web practices among low-cost carriers

The low-cost airlines' adoption of Web technologies to facilitate direct sales has accelerated their market penetration. However, some low-cost carriers are increasingly using Websites to create distance between themselves and their consumers in specific areas of their operations, while simultaneously developing excellence in sales transaction completion via self-service. The ‘opaque’ practices many low-cost carriers employ appear to be intentional design features and are contrary to the ethos of designing a ‘good system’ to facilitate the full spectrum of customer service. As a result, the low-cost sector has come under increased scrutiny for engaging in unfair practices and violating consumer protection law.     

低成本航空：变革制胜

2011年我们看见低成本航空公司这种运营模式进一步拓展前进。持续两位数的增长,75家最大运营商客运量上升了11．6％,其中30家领先运营商收入增加了四分之一。但是利润难以跟上2010年的步伐,谁都无法幸免于燃油成本的上涨。上述30家航空公司经营利润下降了约五分之一至33亿美元,而净利润下降了一半为13亿美元。     

EU network carriers,low cost carriers and consumer behaviour: A Delphi study of future trends

This paper uses a Delphi panel of 26 air transport experts to forecast the structure of air transport in the EU in 2015 in respect of network carriers, low cost airlines and passenger behaviour. Secondary research was used to construct a number of scenarios about the future structure and strategy of EU network and low cost airlines and also traveller behaviour. Consensus of opinions was sought amongst the panel in a two-round process. The consensus opinion of the Delphi experts was that; network carrier consolidation will reduce EU players to less than five, there will be only two or three large low cost carriers, Business Class products will disappear on short hauls, and leisure travellers will take an increasing number of multiple short-duration holidays.     

Financial investment behavior tendencies of air carriers

This study looks at the financial investment behavior of air carriers in Taiwan and the US stock markets. Application of the DHS model via behavioral finance theory indicates a tendency of becoming overly confident in Taiwan's domestic market. It is also known that Taiwanese investors react with excess optimism regardless of market conditions. Availability of private information before and after public announcements has little effect on investment behavior. Contrarily, US investors indicate a lower degree of overconfidence.     

Airlines-within-airlines strategies and existence of low-cost carriers

This paper investigates hub carriers’ airlines-within-airlines (AinA) strategies, intended to establish low-cost divisions offering nonstop flights on rim routes. An initial hub-spoke network is optimal if passenger differentiation between one-stop and nonstop services and via-hub time cost are small. If differentiation is substantial, a mixed one-stop and nonstop (point-to-point) network under AinA is optimal when via-hub time cost is small (large). Low-cost rivals on rim routes weaken AinA adoption and enhance welfare from a monopoly mixed network. In a perfect-substitute case, hub carriers may have excessive incentive to adopt AinA from a welfare viewpoint, especially, when low-cost rivals exist.     

The effect of low fare air carriers on airfares in the US

This paper examines the role that low fare air carriers play in determining air fares in the US. Regression modeling is used to test variables focusing on geographic and competition issues effecting airfare pricing. Variables tested in the modeling include the presence of low fare carriers in a market, hub domination, market share, and type of destination served. The final results show that low fare carriers play a statistically significant role in airfare determination in the US.     

Entry effect of low-cost carriers on airport-pairs demand model using market concentration approach

The trend of open sky policies and growth of low-cost airlines, the topic of airport-pairs demand is gradually being addressed in the golden aviation circle of Northeast Asia. The variety of flight services among the four major metropolises with dual-airport systems leads to a competition-cooperation relationship existing between various airports and airlines. Therefore, this study investigates the causal relationship between the route-level passenger demand and influential factors using aggregate data collected through website observations. The empirical study focuses on direct flights of airport-pair routes among Taipei, Shanghai, Seoul, and Tokyo. Results of the passenger regression model indicate that frequency, code-share, and morning flights have positive impacts on increasing passenger numbers for airlines. Further, the market concentration degree of Herfindahl-Hirschman Index and entry effect of low-cost carriers are important for the route-level passenger demand. In addition, routes with departures and arrivals in hub airports have a considerable attraction relative to other airport-pair routes. Finally, the proposed passenger model performs well in predicting market share, especially for routes with high demand.     

When legacy carriers converge with low-cost carriers: Exploring the fusion of European airline business models through a case-based analysis

The paper makes uses of cognitive mappings developed from personal interviews with a number of European airline executives to examine the differences in managerial attitudes of low-cost and transitional carriers. In particular it explores the extent to which there is a convergence of views regarding the ways various airline models will develop in the future.     

Stopover and hub-and-spoke shipment strategies in less-than-truckload carriers

This paper presents a methodology to identify when freight consolidation strategies are cost-efficient in the less-than-truckload carriers operations. Shipments are assigned based on proximity and cost criteria to build an initial long-haul shipment solution. This initial solution is later improved by the implementation of Tabu Search algorithm. The proximity criterion takes into account the spatial distribution of shipments loads among centers. The results show that the proposed methodology may reduce the transportation cost by 20% compared to the solution of those heuristics only considering cost criterion.     

Responses of air cargo carriers to industrial changes

This study examines how product characteristics, values, inventory cost, shipping charges, shipping distance, and time affect an international firm's choice of air carrier. An individual choice model is constructed by assuming that the shipper in a specific industry chooses the optimal air cargo carrier with the minimal logistics cost. The study further aggregates air cargo demands on different routes for the carriers by considering the spatial distribution of the origin-destination pattern and any temporal changes in the industrial structure. A case study is used to illustrate the application of the proposed model using data from Taiwan Taoyuan International Airport and the industrial economics database in Taiwan. The results show that shippers with high product value and short delivery distance focus on the shipping charge and prefer choosing the air cargo carrier that offers more flights. Further a carrier may achieve a larger market share if its supply attributes match the industrial structure and the product characteristics of the market on the route. Finally, because dynamic changes in the industrial structure and product value have been captured, the results are more accurate than that from the Grey model.     

Cooperation among truck carriers in seaport containerized transportation

Nowadays the majority of goods passing through seaports are transported by road, resulting in a large number of empty movements and high total costs. This paper proposes an optimization model for the cooperative planning of multiple truck carrier operations in a seaport environment for maximizing the total profit derived from their cooperation. A compensation mechanism is introduced to motivate carriers to share their trips. Time windows, trip deadlines and fleet sizes are considered. The planning approach is evaluated using real data sets from the Italian port of Genoa. Numerous scenarios are tested and an extensive computational analysis is reported.     

Codesharing agreements by low-cost carriers: An explorative analysis

In this paper, we present an explorative analysis related to the involvement of low-cost carriers (LCCs) in codesharing agreements. Our goals are to evaluate the diffusion of the phenomenon across countries, and to identify the determining features of companies with regards to the codesharing propensity of LCCs. We analyzed the worldwide scheduling of LCCs in 2011, revealing that one-third of LCCs were involved in codesharing arrangements in 2011. Yet, only 25% of LCCs are involved in codesharing with carriers to whom they are not hierarchically linked. The spread of this phenomenon varied by geographical area, with LCCs in Europe, Australia–New Zealand, Asia, and North America being most likely to codeshare. The airline size, the hybridization of the carrier's business model and an airline network concentration affect the likelihood to codeshare.     

The benefit of advance load information for truckload carriers

This paper models and measures the profit improvement trucking companies can achieve by collaborating with their clients to obtain advance load information (ALI). The main approach is to formulate a comprehensive and flexible mixed integer mathematical model and implement it in a dynamic rolling horizon context. The findings illustrate that access to the second and the third day ALI can improve the profit by averages of 22% and 6%, respectively. We also found that the impact of ALI depends on radius of service and trip length but is statistically independent of load density and fleet size.