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Transit oriented development under the influence of urban air mobility: A public transit-based vertiport siting method 城市空中交通影响下的交通导向发展:基于公共交通的垂直选址方法
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-29 DOI: 10.1016/j.jairtraman.2025.102962
Renwei Liu , Haishan Xia , Lu Li , Qi Li , Sitong Liu
The emergence of electric vertical takeoff and landing (eVTOL) technology has enabled large-scale implementation of urban air mobility (UAM) within cities. This study proposes a vertiport-siting optimization method based on public transit stations to better utilize existing urban resources for UAM development. The study also maximizes the combined strengths of UAM's flexibility and efficiency with the high-capacity characteristics of traditional transit systems, addressing future mobility demands that feature both decentralization and urban agglomeration. The proposed method minimizes travel costs between public transit stations and vertiport locations while incorporating population density as a weighting factor to enhance the objective function. Two siting strategies were compared regarding travel costs and spatial service coverage. Using Shenzhen's Bao'an District as a case study, results indicate that the population-weighted optimization approach reduces distance-based travel costs by 12.6 % and improves coverage in core functional zones by approximately 20 %, significantly enhancing spatial service efficiency. This study diverges from traditional infrastructure-led siting approaches by emphasizing the foundational role of public transit systems in shaping UAM networks. It introduces a three-dimensional urban planning concept that integrates transit-oriented development (TOD) with UAM, offering a new pathway for reshaping urban spatial structures and improving spatial efficiency in future cities.
电动垂直起降(eVTOL)技术的出现使城市空中交通(UAM)在城市内的大规模实施成为可能。本研究提出了一种基于公共交通站点的垂直选址优化方法,以更好地利用现有城市资源进行UAM发展。该研究还最大限度地发挥了UAM的灵活性和效率与传统交通系统的高容量特点的综合优势,解决了以分散化和城市群为特征的未来交通需求。该方法最大限度地减少了公共交通车站和垂直机场之间的交通成本,同时将人口密度作为加权因素来增强目标函数。在旅行成本和空间服务覆盖率方面比较了两种选址策略。以深圳市宝安区为例,研究结果表明,人口加权优化方法使基于距离的出行成本降低12.6%,使核心功能区的覆盖范围提高约20%,显著提高了空间服务效率。这项研究与传统的以基础设施为主导的选址方法不同,强调公共交通系统在塑造UAM网络中的基础作用。它引入了一种立体的城市规划理念,将交通导向发展(TOD)与UAM相结合,为重塑城市空间结构和提高未来城市的空间效率提供了新的途径。
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引用次数: 0
An alternative approach to understanding airline customers’ attitudes and behaviors 了解航空公司客户态度和行为的另一种方法
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-29 DOI: 10.1016/j.jairtraman.2025.102960
Somaye Mansouri , Saeed Moradpour , Catherine Prentice
The aviation industry is facing challenges in meeting the evolved expectations of travelers in the post-COVID era in which their expectations are expressed in their online reviews. Unprecedented proliferation of passenger reviews on online platforms has resulted in a deluge of unstructured data. Hence, in order to assess customers’ attitudes and behaviors, this study utilized machine learning technique including topic modelling and sentiment analysis through analyzing passenger review data extracted from Skytrax for the top 100 low-cost and flagship airlines in 2024. Two most popular topic modelling methods, Latent Dirichlet Allocation and BERTopic were applied to identify recurrent themes. The results show that flight delays, schedule-related issues, communication gaps, and lack of pricing transparency were underscored by passengers as major shortcomings. Low-cost carrier passengers were more focused on operational reliability; whereas, flagship airline passengers were mainly concerned about extra charges and quality of services. The sentiment analysis reveals that cultural and regional differences have influenced customer satisfaction regarding the airline types, continents, cabin comfort, handling of baggage, and in-flight service provision. This research contributes to existing service quality research by extending the traditional methods of assessing customer attitudes and behaviors. The findings provide insightful guidance for airlines to improve service offerings and attract customer patronage.
在后新冠肺炎时代,旅客的期望通过在线评论来表达,航空业在满足旅客的期望方面面临着挑战。在线平台上前所未有的乘客评论激增,导致非结构化数据泛滥。因此,为了评估客户的态度和行为,本研究利用机器学习技术,包括主题建模和情感分析,通过分析从Skytrax中提取的2024年前100名低成本和旗舰航空公司的乘客评论数据。两种最流行的主题建模方法,潜狄利克雷分配和BERTopic被用于识别重复主题。结果显示,航班延误、与时间表相关的问题、沟通差距和缺乏定价透明度是乘客强调的主要缺点。低成本航空公司的乘客更关注运营可靠性;然而,旗舰航空公司的乘客主要关注的是额外收费和服务质量。情感分析显示,文化和地区差异影响了航空公司类型、大洲、客舱舒适度、行李处理和机上服务提供方面的客户满意度。本研究扩展了传统的顾客态度和行为评估方法,为现有的服务质量研究做出了贡献。研究结果为航空公司改善服务和吸引客户惠顾提供了有见地的指导。
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引用次数: 0
An improved optimization algorithm for solving arrival aircraft scheduling problem in the Terminal Maneuvering Area 一种求解终端机动区到港飞机调度问题的改进优化算法
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-24 DOI: 10.1016/j.jairtraman.2025.102961
Ying Huo , Daniel Delahaye , Huijuan Yang , Maolin Wang
The Terminal Maneuvering Area (TMA) is one of the most complex and congested airspace segments, where tools like the Arrival Manager (AMAN) are used to manage inbound traffic and provide accurate, efficient scheduling for each flight. The associated optimization problem is NP-hard, requiring advanced algorithms to meet performance demands in both computational time and solution quality. Heuristic algorithms, such as Simulated Annealing (SA), are known for their ability to provide fast, near-optimal solutions in large and complex state spaces. In our previous work, simulation-based optimization using SA was employed, where information of all flights was integrated into each simulation, resulting in a computationally intensive evaluation process. In this study, we propose a more efficient method by leveraging the inherent safety dependencies between neighboring flights in the operation.By focusing on the performance of individual flights and their immediate impact on adjacent flights, the optimization process becomes more targeted, eliminating the need to integrate all flight data at once. This improves both efficiency and flexibility. To demonstrate the advantages of a selective structure in Simulated Annealing, we introduce Selective Simulated Annealing (SSA) and compare it to the Standard Simulated Annealing algorithm (OSA), highlighting their distinct features. A case study at Paris-Charles de Gaulle (CDG) Airport is used to analyze the performance of both algorithms. Key parameter adjustments are examined to gain insights into their optimization behaviors. The comparison reveals that SSA significantly outperforms OSA, delivering faster computation and reducing delays by 50%.
终端机动区(TMA)是最复杂、最拥挤的空域之一,在这里,像到达管理器(AMAN)这样的工具被用来管理入境交通,并为每个航班提供准确、高效的调度。相关的优化问题是np困难的,需要先进的算法来满足计算时间和解决方案质量的性能要求。启发式算法,如模拟退火(SA),以其在大型复杂状态空间中提供快速、接近最优解决方案的能力而闻名。在我们之前的工作中,采用了基于SA的模拟优化,将所有航班的信息集成到每个模拟中,从而导致计算密集型的评估过程。在本研究中,我们提出了一种更有效的方法,利用相邻航班之间的内在安全依赖关系。通过关注单个航班的性能及其对相邻航班的直接影响,优化过程变得更有针对性,消除了一次整合所有航班数据的需要。这提高了效率和灵活性。为了证明选择性结构在模拟退火中的优势,我们引入了选择性模拟退火算法(SSA),并将其与标准模拟退火算法(OSA)进行了比较,突出了它们的独特之处。以巴黎戴高乐机场为例,分析了两种算法的性能。关键参数调整检查,以获得洞察他们的优化行为。比较表明,SSA明显优于OSA,提供更快的计算速度并减少50%的延迟。
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引用次数: 0
Research on the classification and optimization strategies of civil aviation customer service based on BERTopic and the Kano model 基于BERTopic和Kano模型的民航客户服务分类与优化策略研究
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-23 DOI: 10.1016/j.jairtraman.2025.102959
Heyong Wang, Yuanhao Chen
This study presents an innovative data-driven framework for optimizing airline customer service by integrating BERTopic topic modeling, SnowNLP sentiment analysis, and the Kano model. Unlike traditional approaches relying on surveys or subjective judgment, this method analyzes real customer service dialogues to extract 15 key service topics, assess satisfaction and attention scores, and categorize them into basic, expected, attractive, and indifferent needs. Findings show that Children's Ticket Inquiries, Pet Transportation, Baggage Regulations, and Seat Selection fall under basic needs, requiring prioritized investment to prevent dissatisfaction. Flight Rescheduling, Membership Verification, and Medical Refunds are expected needs that demand targeted improvements to enhance satisfaction. Promotional Inquiries and Expedited Services are attractive needs where innovative enhancements can create surprise and delight. Indifferent needs such as Standard Refunds, Meal Services, and Lost Item Handling require only baseline quality maintenance. Guided by the principle of demand-oriented resource allocation, the study proposes tailored optimization strategies for each category. This framework reveals latent customer priorities and transforms unstructured dialogue data into actionable insights, offering both theoretical contributions and practical implications for improving service quality and competitive positioning in the civil aviation sector.
本研究提出了一个创新的数据驱动框架,通过集成BERTopic主题建模、SnowNLP情感分析和Kano模型来优化航空公司的客户服务。与依赖调查或主观判断的传统方法不同,该方法分析真实的客户服务对话,提取15个关键服务主题,评估满意度和注意力得分,并将其分为基本需求、预期需求、吸引需求和无关需求。调查结果显示,儿童机票查询、宠物运输、行李规定和座位选择属于基本需求,需要优先投资以防止不满。航班改签、会员验证和医疗退款是预期的需求,需要有针对性的改进以提高满意度。促销咨询和加急服务是有吸引力的需求,创新的增强功能可以创造惊喜和快乐。诸如标准退款、餐饮服务和遗失物品处理等无关紧要的需求只需要基本的质量维护。以需求为导向的资源配置原则为指导,针对每个类别提出了有针对性的优化策略。该框架揭示了潜在的客户优先级,并将非结构化的对话数据转化为可操作的见解,为提高服务质量和在民用航空领域的竞争定位提供了理论贡献和实践意义。
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引用次数: 0
Global airline productivity analysis for the year 2022 2022年全球航空公司生产力分析
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-23 DOI: 10.1016/j.jairtraman.2025.102955
Xiaoqian Sun , Changhong Zheng , Xiaowen Fu , Martin Dresner , Anming Zhang , Sebastian Wandelt
Investigating the productivity of airlines in these times is crucial to compare airlines’ performance against peers during a period marked by significant changes in travel demand, operational protocols, and market dynamics. In this study, we present the results of an airline benchmark for the year 2022. Specifically, we collected data for 76 out of 200 largest airlines according to the number of transported passengers in the year 2022. To perform a comprehensive productivity analysis among these airlines, we use eight indicators from the literature, including aggregated ones, such as Total Factor Productivity (TFP) and Residual Total Factor Productivity (RTFP), as well as more specific indicators, such as labor productivity and fuel productivity. As a result of our investigation, we report on the outperforming airlines in two distinct categories: Full-service carriers and low-cost airlines. We believe that this benchmark is a natural complement to existing work on airport benchmarking and will help researchers as well as policy makers to guide airlines towards efficient and sustainable air transportation.
在旅行需求、运营协议和市场动态发生重大变化的时期,调查航空公司的生产力对于将航空公司的表现与同行进行比较至关重要。在本研究中,我们提出了2022年航空公司基准的结果。具体来说,我们根据2022年运送乘客的数量收集了200家最大航空公司中的76家的数据。为了对这些航空公司进行全面的生产率分析,我们使用了文献中的八个指标,包括综合指标,如全要素生产率(TFP)和剩余全要素生产率(RTFP),以及更具体的指标,如劳动生产率和燃料生产率。根据我们的调查,我们将表现优异的航空公司分为两类:全服务航空公司和低成本航空公司。我们相信,这一基准是对现有机场基准工作的自然补充,将有助于研究人员和政策制定者指导航空公司实现高效和可持续的航空运输。
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引用次数: 0
Fairness metric-based RTA adjustment in the presence of wind uncertainty 存在风不确定性时基于公平度量的RTA调整
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-19 DOI: 10.1016/j.jairtraman.2025.102958
Hyunho Jung , John-Paul Clarke
Planning flights in windy conditions is a significant challenge in air transportation. Wind data, derived from updated hourly forecasts available prior to departure, serve as the basis for route planning. However, ensuring timely arrival at the destination airport remains difficult due to inaccuracies and uncertainties in these meteorological forecasts. This challenge is compounded in scenarios involving multi-aircraft, as each flight seeks to minimize resource consumption such as flight time and fuel. Therefore, this study has two aims. First, it seeks to optimize airspeeds while accounting for estimated wind uncertainty in order to conserve fuel while adhering to the Required Time of Arrival (RTA) in single-aircraft operations. The first proposed methodology, referred to as the Optimal Airspeed Search Model, integrates principles from Stochastic Programming (SP) and Receding Horizon Control (RHC) frameworks to determine the most suitable airspeed. To achieve this, the flight is segmented, and a backward-propagation strategy is employed to determine airspeeds for all flight segments. The second aim considers scenarios involving multi-aircraft, assuming in-flight negotiation between aircraft and air traffic control centers to achieve fairness among flights. Using the fairness metric-based model, flight RTAs are adjusted to minimize the fairness metric value while maintaining equitable outcomes. The proposed solution optimizes airspeed, reduces fuel consumption, and negotiates fairness among multi-aircraft under RTA constraints using an integer programming approach with a branch-and-bound optimization method.
在有风的条件下规划飞行是航空运输的重大挑战。根据出发前每小时的最新预报得来的风向数据,可作为路线规划的基础。然而,由于这些气象预报的不准确性和不确定性,确保及时到达目的地机场仍然很困难。在涉及多架飞机的情况下,这一挑战变得更加复杂,因为每次飞行都力求最大限度地减少飞行时间和燃料等资源消耗。因此,本研究有两个目的。首先,它寻求在考虑估计风不确定性的情况下优化空速,以便在保持单架飞机所需到达时间(RTA)的同时节省燃料。第一种提出的方法被称为最优空速搜索模型,它结合了随机规划(SP)和后退地平线控制(RHC)框架的原理来确定最合适的空速。为了实现这一点,对飞行进行分段,并采用反向传播策略来确定所有飞行段的空速。第二个目标考虑了涉及多架飞机的场景,假设飞机和空中交通管制中心之间在飞行中进行协商,以实现航班之间的公平。使用基于公平度量的模型,调整航班rta以最小化公平度量值,同时保持公平结果。该方案采用分支定界优化的整数规划方法,在RTA约束下优化空速、降低燃油消耗和多机间的公平性。
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引用次数: 0
DOCeV: A New Holistic Model for Direct Operating Cost Estimation of Electric Vertical Take-Off and Landing Aircraft DOCeV:一种新的电动垂直起降飞机直接运行成本估算整体模型
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-19 DOI: 10.1016/j.jairtraman.2025.102951
Felix Müller , Alexander Barke , Olof Nittinger , Thomas S. Spengler
Technological advancements foster the development of novel aircraft concepts such as electric vertical take-off and landing aircraft (eVTOLs). As a result of their promised operational benefits, such as low-emission operations and travel time savings, eVTOLs have the potential to complement or substitute existing ground transportation modes. However, their market penetration predominantly depends on economically viable operation. A widely used indicator for evaluating economic performance in aviation is the Direct Operating Cost (DOC). Currently, there is only limited public documentation on methodologies for estimating DOC of eVTOLs, and existing approaches are often abstract. Therefore, this article introduces the DOCeV, a model for estimating eVTOL DOC. The model is based on a reference methodology for conventional aircraft but is modified and extended to address the specific characteristics of (future) eVTOL operations. The DOCeV enables the estimation of costs associated with ownership, insurance, crew, energy, fees, and maintenance. Additionally, an eVTOL performance analysis is conducted within the model, the annual eVTOL utilisation is estimated, and an indicative ticket pricing approach is provided. The DOCeV has been implemented in a tool and validated using an input data set developed for a regional airport shuttle case study between Munich, Germany, and Salzburg, Austria. When applying the DOCeV, the DOC estimates for shorter, regional operations align well with existing literature. Estimates for longer missions are slightly higher than those reported in the literature. Overall, the DOCeV is considered a comprehensive and promising model for estimating realistic eVTOL DOC.
技术进步促进了新型飞机概念的发展,如电动垂直起降飞机(eVTOLs)。由于eVTOLs具有低排放和节省旅行时间等运营优势,因此有可能补充或取代现有的地面运输模式。然而,它们的市场渗透主要取决于经济上可行的经营。直接运营成本(DOC)是评价航空经济绩效的一个广泛使用的指标。目前,关于eVTOLs DOC估算方法的公开文档有限,现有方法往往是抽象的。因此,本文介绍了一种评估eVTOL DOC的模型DOCeV。该模型基于传统飞机的参考方法,但经过修改和扩展,以解决(未来)eVTOL操作的具体特点。DOCeV能够估算与所有权、保险、船员、能源、费用和维护相关的成本。此外,在模型中进行eVTOL性能分析,估计年度eVTOL利用率,并提供指示性机票定价方法。DOCeV已在一个工具中实现,并使用为德国慕尼黑和奥地利萨尔茨堡之间的区域机场班车案例研究开发的输入数据集进行验证。在应用DOCeV时,DOC对较短的区域作业的估计与现有文献很好地吻合。较长期特派团的估计数略高于文献中报告的估计数。总的来说,DOCeV被认为是一个全面和有前途的模型,用于估计实际eVTOL DOC。
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引用次数: 0
Assessing spatial development footprint of urban areas surrounding new airport terminal infrastructure 评估新机场客运大楼基础设施周边市区的空间发展足迹
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-19 DOI: 10.1016/j.jairtraman.2025.102957
Jiayu Liu , Ningning Nicole Kong , Yi Gao
This study employs a Difference-in-Differences (DiD) to measure the land use change after a new airport terminal was being built. By comparing land use changes around airports with newly constructed terminals to those around airports without terminal expansion, the study isolates the effects of terminal developments on urban growth and land transformation. Land use data from the United States National Land Cover Database (NLCD) was analyzed across two treatment periods (2011 and 2016) to evaluate shifts in different land use categories such as developed, agricultural, and natural land. Findings indicate that new terminals construction is usually accompanied by accelerating urbanization, with high-intensity developments expanding at the expense of natural and agricultural lands. An exception appears in the 2011 treatment cohort, where agricultural land increasing stands out, likely reflecting concurrent regional conservation and restoration initiatives.
本研究采用差分法测量新机场航站楼建设后的土地利用变化。通过比较新建航站楼的机场周围与未扩建航站楼的机场周围的土地利用变化,该研究隔离了航站楼开发对城市增长和土地转型的影响。研究人员对来自美国国家土地覆盖数据库(NLCD)的土地利用数据进行了两个处理期(2011年和2016年)的分析,以评估不同土地利用类别(如发达土地、农业土地和自然土地)的变化。研究结果表明,新的码头建设通常伴随着城市化的加速,以牺牲自然和农业用地为代价扩大高强度开发。在2011年的治疗组中出现了一个例外,其中农业用地增加突出,可能反映了同时发生的区域保护和恢复举措。
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引用次数: 0
Flexible planning of dynamic airport infrastructure networks 动态机场基础设施网络的灵活规划
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-18 DOI: 10.1016/j.jairtraman.2025.102956
Wilmar Calderón-Guevara, Mauricio Sánchez-Silva
The critical importance of intergenerational responsibility has placed sustainable infrastructure development at the forefront of global attention, demanding designs that are highly efficient and adaptable to uncertain demands. To address this need, this article proposes and implements a novel methodology to incorporate flexibility into infrastructure system management, enabling dynamic evaluation of system performance and allowing decision-makers to determine the optimal intervention policy. The framework uses stochastic programming to evaluate a set of management policies across multiple scenarios, thereby defining an optimal, robust planning strategy for an airport system. The methodology was successfully validated through a case study of Colombia’s three primary airports (Bogotá, Medellín, and Cali), demonstrating its practical applicability. Key results indicate that the system should prioritize investments in gate facilities, and the selected policy provides a planning guide that ensures positive returns across the entire network. Finally, the study identifies two critical areas for future work: enhancing runway efficiency through network-wide scheduling and applying this framework to other case studies to maximize investments in infrastructure networks.
代际责任的重要性使可持续基础设施发展成为全球关注的焦点,要求设计高效且能适应不确定的需求。为了解决这一需求,本文提出并实现了一种新的方法,将灵活性纳入基础设施系统管理,使系统性能的动态评估成为可能,并允许决策者确定最佳的干预策略。该框架使用随机规划来评估跨多个场景的一组管理策略,从而为机场系统定义一个最佳的、稳健的规划策略。通过对哥伦比亚三个主要机场(波哥大、Medellín和卡利)的案例研究,成功验证了该方法的实用性。关键结果表明,系统应该优先考虑闸门设施的投资,所选择的政策提供了一个规划指南,确保整个网络的正回报。最后,该研究确定了未来工作的两个关键领域:通过全网络调度提高跑道效率,并将此框架应用于其他案例研究,以最大限度地提高基础设施网络的投资。
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引用次数: 0
Beyond the brand: Analysing the rationale and relevance of one-brand, multi-AOC strategies in global airline groups 超越品牌:分析全球航空公司集团中单一品牌、多aoc战略的基本原理和相关性
IF 3.6 2区 工程技术 Q2 TRANSPORTATION Pub Date : 2025-12-17 DOI: 10.1016/j.jairtraman.2025.102952
Lars-Michael Wendel , Sascha Albers , Wouter Dewulf
Airlines increasingly adopt one-brand, multi-AOC (OB-MA) strategies – operating multiple Air Operator Certificates (AOCs) under a single brand identity. Despite their growing prevalence, the strategic rationale and contextual factors driving OB-MA strategy adoption remain underexplored in the academic literature.
This study develops a structured framework for assessing the situational factors that shape the establishment and implementation of OB-MA strategies. Using the Analytic Hierarchy Process (AHP), we identify, classify, and rank 15 key criteria and sub-criteria. Our findings reveal that jurisdictional constraints, strategic trajectory, and organisational lifecycle status are central to the rationale for OB-MA implementation.
This study introduces a distinction between ex-ante qualification criteria – which justify the initial need for OB-MA structures – and ex-post success criteria – which determine their long-term viability. This distinction enhances the practical relevance of the framework, equipping airline executives with a diagnostic tool to assess both the necessity and sustainability of OB-MA strategies in dynamic market environments.
This research offers both theoretical background and practical guidance for OB-MA strategy development and contributes to a more systemic understanding of multi-AOC structures within airline strategy.
航空公司越来越多地采用单品牌、多aoc (OB-MA)战略——在单一品牌标识下运营多个航空运营商证书(aoc)。尽管OB-MA战略越来越普遍,但在学术文献中,推动OB-MA战略采用的战略理论基础和背景因素仍未得到充分探讨。本研究开发了一个结构化的框架来评估影响OB-MA战略建立和实施的情境因素。使用层次分析法(AHP),我们识别、分类和排名15个关键标准和子标准。我们的研究结果表明,管辖约束、战略轨迹和组织生命周期状态是实施OB-MA的基本原理的核心。本研究介绍了事前资格标准和事后成功标准之间的区别,前者证明了OB-MA结构最初的必要性,后者决定了它们的长期可行性。这种区别增强了该框架的实际相关性,为航空公司高管提供了一种诊断工具,以评估OB-MA战略在动态市场环境中的必要性和可持续性。本研究为OB-MA战略的发展提供了理论背景和实践指导,有助于更系统地理解航空公司战略中的多aoc结构。
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引用次数: 0
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Journal of Air Transport Management
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