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Sustainability challenges in airlines contemporary environmental management 航空公司当代环境管理的可持续性挑战
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-22 DOI: 10.1016/j.jairtraman.2024.102616
Elen Paraskevi Paraschi , Ioulia Poulaki , Athina Papageorgiou

Environmental concerns attract growing attention in aviation. Airlines and other aviation stakeholders are increasingly committed to more environmentally friendly operations. This paper aims to expand the understanding of the airlines' environmental attitudes and map best practices in the sector. To achieve this goal, the authors followed a two-stage analysis. Initially, a number of interviews were conducted with a focus group of key respondents from six Greek airlines, to draw the general picture of their environmental awareness. In the second stage, the authors studied the market's dominant airlines as a case to gain a deeper understanding of how an Environmental Management System (EMS) is deployed in practice and to allow for best practices to emerge. The research findings highlight the need for EMSs to become an integral part of airlines' operational strategy and the imperative for an articulate regulatory framework able to enhance the airlines' eco-path through concrete guidelines and knowledge exchange.

航空业越来越关注环境问题。航空公司和其他航空利益相关方正在越来越多地致力于更加环保的运营。本文旨在扩大对航空公司环保态度的了解,并绘制该行业的最佳实践图。为实现这一目标,作者采用了两阶段分析法。首先,对希腊六家航空公司的主要受访者进行了多次访谈,以了解他们的环保意识。在第二阶段,作者将市场上占主导地位的航空公司作为一个案例进行研究,以深入了解环境管理系统(EMS)在实践中是如何部署的,并总结出最佳做法。研究结果突出表明,环境管理系统必须成为航空公司运营战略不可分割的一部分,而且必须建立一个明确的监管框架,通过具体的指导方针和知识交流来加强航空公司的生态之路。
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引用次数: 0
Understanding passengers' intermodal travel behavior to improve air-rail service: A case study of Beijing-Tianjin-Hebei urban agglomeration 了解乘客的多式联运出行行为,改善空铁联运服务:京津冀城市群案例研究
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-21 DOI: 10.1016/j.jairtraman.2024.102615
Lin Chen , Enjian Yao , Yang Yang , Long Pan , ShaSha Liu

Uneven utilization of airport clusters is a widespread problem, yet China is still planning to build more airports. Intermodal Passenger Transport Service (IPTS), the most typical of which is the Air-Rail Integration Service (ARIS), is one new way to solve this problem. Although some service products have been derived, intermodal travel services are still in their infancy due to problems such as long transfer time and inconvenient connectivity arising from the fact that those products fail to take into account the complexity of transfers between multiple hubs, resulting in a low penetration rate of intermodal services. Therefore, this study constructs a universal Hybrid Choice Model (HCM) framework that includes mode choice and city choice based on an online stated preference (SP) survey about multi-hub intermodal transportation in the Beijing-Tianjin-Hebei urban agglomeration, and introduces travelers' concerns about travel security, comfort, convenience and reliability as attitudinal variables, which expands the research on IPTS. Then the willingness to pay (WTP) for travel service is evaluated to demonstrate intermodal travelers' preference for shorter transfer time, transferring in the metropolis, more reserve time for air than rail, and the impact mechanisms of luggage through-handling service and mutual recognition mechanism of security checks. Last but not least, through scenario testing, we find that the excessive concern for security and comfort among high-educated and high-income passengers with a low tolerance for transfer time will reduce the market share of air-rail. These findings can assist relevant departments and businesses in making more humane plans for intermodal travel and infrastructure construction.

机场群利用率不均衡是一个普遍存在的问题,但中国仍在计划建设更多的机场。旅客联运服务(IPTS)是解决这一问题的新途径,其中最典型的是空铁联运服务(ARIS)。虽然目前已经衍生出了一些服务产品,但由于这些产品没有考虑到多枢纽之间换乘的复杂性,存在换乘时间长、衔接不便等问题,导致多式联运服务的普及率较低,目前仍处于起步阶段。因此,本研究基于对京津冀城市群多枢纽联运的在线陈述偏好(SP)调查,构建了一个包含模式选择和城市选择的通用混合选择模型(HCM)框架,并引入旅客对出行安全性、舒适性、便利性和可靠性的关注作为态度变量,拓展了对IPTS的研究。然后,对旅行服务的支付意愿(WTP)进行了评估,展示了多式联运旅客对缩短换乘时间、在大都市内换乘、航空比铁路更多的预留时间的偏好,以及行李直通服务和安检互认机制的影响机制。最后,通过情景测试,我们发现高学历、高收入旅客对安全性和舒适性的过度关注,以及对换乘时间的低容忍度,将降低空铁联运的市场份额。这些发现可以帮助相关部门和企业在多式联运和基础设施建设方面制定更加人性化的规划。
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引用次数: 0
A hybrid forecasting architecture for air passenger demand considering search engine data and spatial effect 考虑搜索引擎数据和空间效应的航空客运需求混合预测架构
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-16 DOI: 10.1016/j.jairtraman.2024.102611
Xiaozhen Liang, Chenxi Hong, Jiaqi Chen, Yingying Wang, Mingge Yang

As the global process of digitalization accelerates and breakthroughs in internet technology emerge, governments worldwide are advocating for data-driven decision-making, aiming to enhance public service efficiency and stimulate economic growth. Against this backdrop, this study focuses on utilizing search engine data (SED) to improve air passenger demand forecasting, responding to national policies aimed at enhancing data analysis capabilities and promoting the development of intelligent transportation systems; however, the existing research is confined to the exploration of the temporal dependency between SED and air passenger demand variables with ignoring the spatial dependency. In order to eliminate this blind spot and catch from various parts of tourist attention, this study proposes a novel SED-driven hybrid forecasting architecture inspired by the theory of spatial effect between adjacent tourist destinations. The architecture includes three main steps: (1) construction of spatial-temporal SED variables, based on two-stage data preprocessing method; (2) variable decomposition and reconstruction, based on TVF-EMD algorithm; (3) prediction of different components of air passenger demand, employed ARIMA model and IHGS-KELM based multi-model fusion strategy respectively, where the IHGS algorithm integrates the circle chaos initialization strategy and the nonlinear convergence factor strategy. To confirm the practical applicability of this hybrid architecture, five comparative experiments based on the actual dataset are designed. The principal results are concluded as follows: (1) spatial-temporal SED is conducive to a fairly accurate air passenger demand forecasting; (2) the multi-model fusion strategy can integrate the fortes of various types of prediction models to obtain better prediction accuracy; (3) the adaptive ensemble method based on IHGS-KELM can contribute to the upgradation of prediction performance of air passenger demand.

随着全球数字化进程的加快和互联网技术的突破,世界各国政府都在倡导数据驱动决策,旨在提高公共服务效率和刺激经济增长。在此背景下,本研究将重点放在利用搜索引擎数据(SED)改进航空客运需求预测上,以响应国家旨在提高数据分析能力和促进智能交通系统发展的政策;然而,现有研究仅限于探索 SED 与航空客运需求变量之间的时间依赖关系,而忽略了空间依赖关系。为了消除这一盲点,从游客关注的各个环节入手,本研究受相邻旅游目的地之间空间效应理论的启发,提出了一种新颖的 SED 驱动混合预测架构。该架构包括三个主要步骤:(1) 基于两阶段数据预处理方法构建时空 SED 变量;(2) 基于 TVF-EMD 算法进行变量分解和重构;(3) 分别采用 ARIMA 模型和基于 IHGS-KELM 的多模型融合策略预测航空客运需求的不同组成部分,其中 IHGS 算法集成了圆混沌初始化策略和非线性收敛因子策略。为了证实这种混合架构的实用性,设计了五个基于实际数据集的对比实验。主要结果总结如下(1)时空 SED 有利于实现相当准确的航空客运需求预测;(2)多模型融合策略可以整合各类预测模型的优势,获得更好的预测精度;(3)基于 IHGS-KELM 的自适应集合方法有助于提升航空客运需求预测性能。
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引用次数: 0
The economic impact of E-commerce on the U.S. airports: Cost savings and productivity growth 电子商务对美国机场的经济影响:节约成本和提高生产力
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-13 DOI: 10.1016/j.jairtraman.2024.102598
Fecri Karanki , Volodymyr Bilotkach , Yi Gao , Chien-Tsung Lu

The rise of e-commerce, fueled by digitalization and shifting in consumer demand, has revolutionized air cargo. While all e-commerce stakeholders are engaged in fierce competition to increase their market share, airports as integral elements of the air cargo supply chain could not be apathetic to this competition. This study examines the economic implication of e-commerce on high cargo volume airports, focusing on cost savings and productivity growth. Utilizing the Farrell measure of input-oriented technical efficiency, we estimate scope economies for the U.S. airports between 2009 and 2019. The results reveal higher scope economies for high cargo volume airports, indicating greater cost savings resulting from e-commerce activities. In addition, the Malmquist index is employed to assess productivity growth. The index is decomposed into technical change, efficiency change, and scale change. The findings show a 3.3% overall productivity growth in the U.S. airport industry, primarily driven by technical change. Besides, high cargo volume airports exhibit higher productivity growth compared to low cargo volume airports, with 4.1% and 2.9% growth rates, respectively. The gap between high cargo volume and low cargo volume airports widened in 2017, aligning with the pre-pandemic peak in e-commerce activity. Furthermore, high cargo volume airports experience higher efficiency gains and technical advancements. While efficiency gains are attributed to improved performance and increased capacity utilization, the technical advancements can be explained by the digitalization and customized operations associated with e-commerce. Overall, the results highlight the significant contribution of e-commerce to cost savings and productivity growth in high-cargo volume airports.

在数字化和消费者需求变化的推动下,电子商务的兴起给航空货运带来了革命性的变化。所有电子商务利益相关者都在为扩大市场份额而展开激烈竞争,而机场作为航空货运供应链中不可或缺的一环,也不能对这场竞争无动于衷。本研究探讨了电子商务对高货运量机场的经济影响,重点关注成本节约和生产率增长。利用以投入为导向的技术效率法雷尔衡量标准,我们估算了 2009 年至 2019 年美国机场的范围经济。结果显示,高货运量机场的范围经济性更高,这表明电子商务活动节省了更多成本。此外,还采用了 Malmquist 指数来评估生产率的增长。该指数被分解为技术变化、效率变化和规模变化。研究结果表明,美国机场行业的整体生产率增长了 3.3%,主要由技术变革驱动。此外,与低货运量机场相比,高货运量机场的生产率增长率更高,分别为 4.1% 和 2.9%。2017 年,高货运量机场与低货运量机场之间的差距有所扩大,这与大流行前的电子商务活动高峰相吻合。此外,高货运量机场的效率提高和技术进步也更多。效率的提高归因于性能的改善和运力利用率的提高,而技术进步的原因则是与电子商务相关的数字化和定制化运营。总之,研究结果凸显了电子商务对高货运量机场节约成本和提高生产率的重要贡献。
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引用次数: 0
Assessing economic performance and aviation accidents using zero-inflated and over-dispersed panel data models 利用零膨胀和过度分散面板数据模型评估经济绩效和航空事故
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-10 DOI: 10.1016/j.jairtraman.2024.102599
Ubay Pérez-Granja , José María Pérez-Sánchez , Jorge V. Pérez-Rodríguez

This paper explores the link between air transport safety and profitability. Traditionally, the empirical literature has used Poisson regression models to estimate the expected number of accidents given the profitability of the airline. However, there are two major deficiencies in this analysis related to the statistical properties of the data. First, the equi-dispersion assumed in Poisson models hardly holds in the airline data. Second, accidents are rare cases, so the data has an excess of zeros. In this paper, we propose the use of a zero-inflated negative binomial model to deal with these shortcomings. Our results show several interesting facts. On the one hand, they show that airlines with higher levels of profitability are less likely to have an accident. On the other hand, when an accident occurs, there is a higher expected number of accidents in airlines with higher profitability. Finally, the severity of an accident has an inverse relationship with profitability.

本文探讨了航空运输安全与盈利能力之间的联系。传统上,实证文献使用泊松回归模型来估计航空公司盈利能力下的预期事故数量。然而,这种分析方法在数据统计特性方面存在两大缺陷。首先,泊松模型中假设的等离散性在航空公司数据中几乎不成立。其次,事故属于罕见情况,因此数据中存在过多的零。在本文中,我们提出使用零膨胀负二项模型来解决这些缺陷。我们的研究结果显示了几个有趣的事实。一方面,结果显示盈利水平较高的航空公司发生事故的可能性较小。另一方面,当事故发生时,盈利能力越高的航空公司发生事故的预期次数越多。最后,事故的严重程度与盈利能力成反比关系。
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引用次数: 0
Innovation strategies for non-existent markets - Profiting from urban air mobility 针对不存在的市场的创新战略 - 从城市空中交通中获利
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-10 DOI: 10.1016/j.jairtraman.2024.102601
Nick Ehrhardt , Paul Herrmann Horlacher , Anna Straubinger

Technological advances have paved the way for urban air mobility (UAM) as a new mode of transportation, providing solutions for both inner-city and regional transportation. Novel vertical take-off and landing (VTOL) vehicles promise to be less noisy and safer than existing helicopters, thus allowing for an integration of UAM into current mobility systems. However, as this market is non-existent today, companies engaged in this field face several uncertainties. Strategic decision factors supporting VTOL manufacturers to successfully commercialize their innovation are still mainly unassessed. Looking into the innovation strategy literature we find little guidance on how high-technology companies can profit from innovation in so far non-existent markets. We therefore conduct expert interviews that allow us to identify eight decision factors that VTOL manufacturers are expected to take into account when setting up their commercial strategy. Building on the findings from these interviews we suggest to enhance the Profiting from Innovation (PFI) framework by a peripheric sphere that incorporates the impact of external factors on commercial success. This approach on the one hand, allows to provide insights into strategic management approaches of VTOL manufacturers, while on the other hand, this research adds to the scientific literature on strategic decision factors in non-existent markets.

技术进步为城市空中交通(UAM)这种新的交通方式铺平了道路,为市内交通和区域交通提供了解决方案。新型垂直起降(VTOL)飞行器有望比现有直升机噪音更小、更安全,从而使城市空中交通(UAM)融入当前的交通系统。然而,由于这一市场目前尚不存在,从事这一领域的公司面临着一些不确定因素。支持 VTOL 制造商成功实现其创新商业化的战略决策因素仍主要未得到评估。在研究创新战略的文献中,我们几乎找不到关于高科技公司如何在迄今尚不存在的市场中从创新中获利的指导。因此,我们通过专家访谈,确定了 VTOL 制造商在制定商业战略时需要考虑的八个决策因素。在这些访谈结果的基础上,我们建议通过将外部因素对商业成功的影响纳入一个外围领域来加强 "从创新中获利"(PFI)框架。这种方法一方面有助于深入了解 VTOL 制造商的战略管理方法,另一方面,这项研究也为有关不存在市场的战略决策因素的科学文献增添了新的内容。
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引用次数: 0
Fuzzy inference system for forecasting non-aeronautical revenues considering the customer experience 考虑客户体验的非航空收入预测模糊推理系统
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-09 DOI: 10.1016/j.jairtraman.2024.102595
Lenice M. Silva , Michelle C.G.S.P. Bandeira , Giovanna M.R. Borille , Rogéria A. Gomes , Lamartine N.F. Guimarães

Non-aeronautical revenues are associated with commercial activities at the airport, in which the fundamental factor in managing these revenues is the customers’ experience. This study numerically analyzed the influence of passenger satisfaction and waiting time on consumption made in the commercial facilities of the Airport Passenger Terminal, operating predominantly with domestic flights. This research was made through a structured questionnaire and the passengers in the airport to support the definition of the behavior of the Fuzzy Inference System. The results show that the greater the passenger satisfaction and waiting time, the greater the chances of significantly shopping. Furthermore, this study presents fuzzy modeling of a rule-based computational intelligence system capable of forecasting non-aeronautical revenues referring to shopping and dining experience, with significant contributions to the literature and airport management.

非航空收入与机场的商业活动有关,而管理这些收入的基本因素是客户的体验。本研究通过数字分析了乘客满意度和等待时间对机场客运站商业设施消费的影响,机场客运站主要运营国内航班。这项研究通过结构化问卷调查和机场内的乘客来支持模糊推理系统的行为定义。结果表明,乘客满意度越高,等待时间越长,大幅购物的机会就越大。此外,本研究还介绍了基于规则的计算智能系统的模糊建模,该系统能够预测与购物和餐饮体验有关的非航空收入,对文献和机场管理有重大贡献。
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引用次数: 0
Performance evaluation of the global airline industry under the impact of the COVID-19 pandemic: A dynamic network data envelopment analysis approach COVID-19 大流行影响下的全球航空业绩效评估:动态网络数据包络分析法
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-09 DOI: 10.1016/j.jairtraman.2024.102597
Sijin Wu , Marios Dominikos Kremantzis , Umair Tanveer , Shamaila Ishaq , Xianghan O'Dea , Hua Jin

The COVID-19 pandemic posed unprecedented challenges to the airline industry, necessitating a focus on maintaining high efficiency for profitability. This study assesses the efficiency of 26 international airlines from 2019 to 2022 using a dynamic network data envelopment analysis (DNDEA) methodology. The model accounts for the dynamic effect between two consecutive periods and incorporates an internal structure to evaluate airline performance across multiple dimensions. It enables the assessment of overall, period-specific, and stage-specific efficiencies. The findings reveal that while overall efficiency is moderately high on average, no airline achieved full efficiency during the pandemic. Efficiency decreased notably from 2019 to 2020, with a partial recovery but not a return to pre-pandemic levels by 2022. Operational performance remains satisfactory and stable, while service and financial performance exhibit lower efficiency, especially among low-cost airlines compared to full-service counterparts. Additionally, the study explores airlines' environmental impact by considering greenhouse gas emissions. Comparative analysis with a dynamic DEA model without internal structure highlights theoretical contributions, and the study offers managerial insights for airline leaders and policymakers.

COVID-19 大流行给航空业带来了前所未有的挑战,因此必须注重保持高效率以实现盈利。本研究采用动态网络数据包络分析(DNDEA)方法,对 26 家国际航空公司 2019 年至 2022 年的效率进行了评估。该模型考虑了两个连续时期之间的动态效应,并纳入了一个内部结构,以评估航空公司在多个维度上的表现。该模型可评估总体效率、特定时期效率和特定阶段效率。研究结果表明,虽然总体效率平均处于中等水平,但没有一家航空公司在大流行期间实现了全效率。从 2019 年到 2020 年,效率明显下降,到 2022 年部分恢复,但没有恢复到大流行前的水平。运营表现仍然令人满意且保持稳定,而服务和财务表现则表现出较低的效率,尤其是低成本航空公司与全服务航空公司相比。此外,本研究还通过温室气体排放探讨了航空公司对环境的影响。与无内部结构的动态 DEA 模型的比较分析突出了理论贡献,研究为航空公司领导者和政策制定者提供了管理见解。
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引用次数: 0
Aviation Operators’ Total Loads Analysis by Multi-Criteria Decision-Making 通过多标准决策对航空运营商的总负荷进行分析
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-09 DOI: 10.1016/j.jairtraman.2024.102596
Omar Alharasees, Utku Kale

The aviation operator's role and duties undergo a dramatic change from direct engagement to information management and surveillance in today's advanced aviation environment. In this modern and highly automated working environment, operators must handle various information, data, and transmission during operations, particularly while making decisions in specific situations. The total load system of operators (information, communication, mental, task, and workload) has been fundamentally reshaped in response to these dynamic changes. The highly automated system is linked to unbalanced operator loads, unanticipated losses in situation awareness, inappropriate decision-making quality, and higher stress levels. This research employs the Analytical Hierarchy Process (AHP) as a foundational framework, integrating the Fuzzy Analytical Hierarchy Process (FAHP) on the AHP model to address uncertainties and applying the Technique for Order of Preference by Similarity to the Ideal Solution (TOPSIS) for ranking the aviation operators' total loads. online Survey distributed among 63 experts across four aviation operator groups: less experienced pilots, expert pilots, less experienced Air Traffic Controllers (ATCOs), and experienced ATCOs. serves to evaluate the pivotal characteristics of the operators' total loads model. The results highlighted the communication load's effect on the aviation operators specifically the level of the language as well the workload specifically both practicing referring to the experience and skills.

在当今先进的航空环境中,航空操作员的角色和职责发生了巨大变化,从直接参与到信息管理和监控。在这种高度自动化的现代工作环境中,操作员必须在操作过程中处理各种信息、数据和传输,特别是在特定情况下做出决策时。操作员的总负荷系统(信息、通信、精神、任务和工作量)已根据这些动态变化进行了根本性的重塑。高度自动化系统与操作员的不平衡负荷、意外的情况意识损失、不适当的决策质量和更高的压力水平有关。本研究采用分析层次过程(AHP)作为基础框架,在 AHP 模型上整合了模糊分析层次过程(FAHP)以解决不确定性问题,并应用与理想解决方案相似的偏好排序技术(TOPSIS)对航空运营商的总负荷进行排序。在 63 名专家中进行了在线调查,这些专家来自四个航空运营商群体:经验较少的飞行员、专家级飞行员、经验较少的空中交通管制员(ATCO)和经验丰富的空中交通管制员。结果突出了通信负荷对航空操作员的影响,特别是语言水平和工作量,尤其是在经验和技能方面。
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引用次数: 0
Losing altitude: The impact of new leasing standards on the liquidity, leverage, profitability and valuation of U.S. and European airlines 失去高度:新租赁标准对美国和欧洲航空公司流动性、杠杆率、盈利能力和估值的影响
IF 6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2024-05-01 DOI: 10.1016/j.jairtraman.2024.102594
Philip J. Slater, Alfred Greenfield, Earl Godfrey, Felice Policastro

The global airline industry represents fertile ground for research due to its susceptibility to extraneous demand shocks such as fuel price hikes, terrorist attacks, and global pandemics coupled with high leverage and high reliance on leasing. Accounting Standards Codification (ASC) 842 Leases and International Financial Reporting Standard (IFRS) 16 Leases became effective January 1st, 2019 for publicly-traded firms in the U.S. and overseas, requiring capitalization of the majority of leased assets. This study was motivated by how the acts may have affected reported airline liquidity, leverage, profitability and stock price, and if any evidence existed of lease restructure attempts in order to avoid capitalization; which may provide initial impacts. Using a sample of publicly-traded airlines incorporated in the U.S. and Europe, the current study used firm year-level filings from 2017 to 2019 to determine if passage of the acts were associated with changes in liquidity, leverage, profitability and stock price. One-way analysis of variance (ANOVA) and independent samples t-test parametric statistical testing was employed to determine any statistically significant change in the means of selected ratios operationalizing liquidity, leverage, profitability and firm valuation. The results indicated no significance for any of the variables operationalizing the latent constructs providing evidence contrary to previous predictions, and a significant difference between the two regions, worthy of further study. These findings are significant due to the vast financial reporting implications associated with these acts and their potential to skew financial ratios, juxtaposed against the ever-present threat of extraneous demand shocks which permeate this industry. The research also suggests management may have attempted lease restructures to circumvent the capitalization requirements of the act and warrants further research to investigate the generalizability of these findings to other industries.

全球航空业是研究的沃土,因为它容易受到燃料价格上涨、恐怖袭击和全球大流行病等外部需求冲击的影响,同时还具有高杠杆率和高度依赖租赁的特点。会计准则汇编》(ASC)842 租赁和《国际财务报告准则》(IFRS)16 租赁于 2019 年 1 月 1 日对美国和海外上市公司生效,要求将大部分租赁资产资本化。本研究的动机是,该法案可能会如何影响航空公司报告的流动性、杠杆率、盈利能力和股票价格,以及是否存在为避免资本化而试图进行租赁重组的证据;这可能会产生初步影响。本研究以在美国和欧洲上市的航空公司为样本,使用 2017 年至 2019 年的公司年度级申报文件,以确定法案的通过是否与流动性、杠杆率、盈利能力和股票价格的变化有关。研究采用了单因子方差分析(ANOVA)和独立样本t检验等参数统计检验方法,以确定所选的流动性、杠杆率、盈利能力和公司估值操作比率的均值是否发生了统计学意义上的显著变化。结果表明,任何操作潜在结构的变量都没有显著性,这与之前的预测相反,而且两个地区之间存在显著差异,值得进一步研究。这些研究结果具有重要意义,因为与这些行为相关的财务报告影响巨大,而且有可能扭曲财务比率,与此同时,外来需求冲击的威胁无处不在,而这一行业又无时无刻不受到外来需求冲击的影响。研究还表明,管理层可能试图通过租赁重组来规避该法案的资本化要求,因此有必要进一步研究这些发现对其他行业的普遍适用性。
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引用次数: 0
期刊
Journal of Air Transport Management
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