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1.
Despite the considerable efforts to alleviate problems of North Atlantic (NAT) air traffic and implementation of novel surveillance systems, oceanic errors still remain stubbornly high. The purpose of this study is to identify and examine the factors that contribute to navigation errors in the NAT Region by integrating a Fuzzy Analytic Hierarchy Process (FAHP) into the Human Factors Analysis and Classifying System (HFACS) framework for the first time to the best of our knowledge. According to the priority weights, the most important factors contributing to oceanic errors are lack of training provided by airlines, use of inappropriate routes for oceanic crossing by dispatchers, and failure to take preventive measures against oceanic errors. To mitigate the possibility of the aforementioned errors, pilots as individuals must increase their knowledge on cockpit procedures and airlines as organizations have to pay particular attention to training programs to implement appropriate preventive actions. 相似文献
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Evaluation of airlines based on service quality criteria can help to improve the processes of airlines, and also can give guidance to travel agencies to provide better choices for passengers and tourists. In this study, a hybrid simulation-based assignment approach is proposed to deal with multi-criteria decision-making problems with a group of decision-makers. A probability distribution is used to model decision-makers’ opinions and constructing a stochastic decision matrix. Then some efficient multi-criteria decision-making methods are utilized for evaluating alternatives in a simulation process. The proposed approach is applied to a problem of evaluation of five airlines with respect to opinions of 58 experts on 28 criteria. The results show the efficiency of the proposed to handle decision-making problems with a large number of experts. Moreover, the evaluation results are more reliable than the other decision-making approaches because of simulating decision-makers’ opinions, using multiple methods and evaluating based on aggregative results. 相似文献
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In this paper a new approach was proposed so as to comparatively evaluate the quality of service alternatives. In particular, a fuzzy extension of the ServPerf service conceptual model was considered to estimate quality scores of fundamental service criteria, whereas the non-compensative multi-criteria decision-making ELECTRE III method was employed to point out the quality ranking of service alternatives on the basis of which the comparative service quality analysis was performed. In order to show the effectiveness of the proposed approach, an empirical study concerning service quality evaluation of the three international airports in Sicily (Italy) was conducted with detailed proposals for passenger service improvement. The results showed that only few key service aspects played a focal role in quality airport service. Moreover, the effects on the evaluation of service quality, arising from customers' uncertainties, were computed, thus demonstrating the effectiveness of the proposed approach. 相似文献
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广德站维修机构采用分专业独立设置,为使广德站维修机构由传统分专业维修模式逐步向集中化、协同化的综合维修模式转变。在分析广德站既有维修机构布局现状的基础上,结合广德站实际情况,通过分析既有布局存在问题,提出广德站综合维修机构布局优化、广德站综合维修基地布置方案,实现生活保障管理一体化和必要的生产设施共享,充分利用既有设备设施,实现生产生活设施与综合维修模式相适应,为既有线改建过程中综合维修机构设置提供借鉴。 相似文献
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Airports are some of the most important facilities in any country's transportation system. It is important to protect such critical infrastructure from natural and manmade risks. However, it is difficult to build a risk prediction model based only on past statistical data. An experienced expert-based Multiple Criteria Decision-Making (MCDM) approach could be used to measure an airport's resilience and develop feasible protection strategies. This study proposes a novel assessment model for evaluating airport resilience. The model uses the Bayesian Best Worst Method (Bayesian BWM) to determine the optimal group weights of the criteria, and the modified Preference Ranking Organization Method for Enrichment Evaluations (modified PROMETHEE) technique to calculate the gap between each alternative and the aspiration level. The practicality and effectiveness of the model are demonstrated using Taiwan's airports as an example. In addition, sensitivity analysis and model comparisons are conducted to confirm the reliability of the proposed model. The results show that the proposed assessment system can effectively assist policy makers and airport security departments to formulate improvement strategies, thereby enhancing the resilience of this infrastructure. 相似文献
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The study was performed to identify critical factors driving the implementation of an English-medium instruction programme for the training of international professionals to serve in the MICE industry. A hybrid multiple criteria decision-making model, termed the decision-making trial and evaluation laboratory (DEMATEL)-based analytic network process (ANP), was used to prioritize the complexity of influential factors interwoven in the process of implementing the programme. The DEMATEL-based ANP employed by the study can be extended to evaluate priority factors critical to the implementation of similar programmes in other tertiary settings, as it will formulate a set of procedural guideline for implementers to systematically improve and sustain the implementation effort. Results of the study will lead to a number of practical, managerial, methodological and research implications. 相似文献
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Ming-Shin Kuo 《Transportation Research Part E: Logistics and Transportation Review》2011,47(6):1177-1193
This paper presents an effective approach based on combining VIKOR, GRA, and interval-valued fuzzy sets to evaluate service quality of Chinese cross-strait passenger airlines via customer surveys. The proposed approach can enable decision-makers to understand the gaps between alternatives and aspired levels. An empirical study is used to establish a complete service quality evaluation framework for reducing the gaps to achieve the aspired level. Based on the gaps in priorities, it can help an airline to identify its own strengths and weaknesses in specific areas of passenger service to further improve service quality. 相似文献
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在总结有关会展评估的共识和难题的基础上,提出了会展评估指标体系的新想法:在对会展项目评估的基础上考虑展会的品牌无形资产要素,将对品牌展会的评估指标分为基础指标、行业特性指标和品牌展会的品牌无形资产指标这三个部分,建议运用AHP层次分析法和模糊综合评价法处理主观性的软性指标,采用标准分数的形式解决不同行业的展会评分问题。 相似文献
10.
We study load balancing policies for an airport baggage handling system (BHS). The performance of the screening subsystem is important as it can potentially cause traffic congestion of the whole BHS during peak period. Currently, the round-robin (RR) and the first-available (FA) polices are implemented at airports. This paper presents a simulative approach to evaluate the impact of load balancing policies on the system performance. Using discrete-event simulations, airport practitioners can assess the effectiveness of the policies according to the actual layout of a particular passenger terminal. In addition to the RR and FA, a join-shortest-queue (JSQ) policy is introduced. This scheme can be applied jointly with the RR for daily operations. A case study is presented to illustrate the characteristics of this scheme. Simulation results demonstrate that the RR-JSQ can replace the existing RR-FA for a better balanced load distribution and improve the overall system performance. 相似文献
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This paper deals with the applications of best worst method (BWM) and multi-attributive border approximation area comparison (MABAC) method to assess the performance of 32 major Indian international airports based on eight evaluation criteria. The BWM is applied to derive the criteria weights based on the opinions of four decision makers, while MABAC method is employed to rank the considered airports from the best to the worst along with the identification of their relative strengths and weaknesses. The advantages of these methodologies are also enumerated. It is observed that annual revenue is the most important evaluation criterion, followed by the total number of passengers. Based on this integrated analysis, Indira Gandhi International Airport and Surat International Airport respectively emerge out as the best and the worst performing international airports in India. 相似文献
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The aim of this study is to select airline service quality improvement criteria for the Taiwanese airline industry. Numerous factors such as low railway prices, the development of high-speed rail, increases in petroleum prices, increases in foreign airline competition, and the recent economic depression have led many airlines in Taiwan to encounter financial difficulties and even closure. Researchers have begun to identify critical service quality improvement criteria with the goal of increasing the competitive advantages of airlines. Most of the selected criteria, however, suffer from a major technical problem: all of the measurement dimensions are independent, leading to inadequate criteria for measuring service quality. Our calculations consider the interrelationships and effects among the evaluation dimensions and criteria to precisely rank and select criteria. The value of this study is that it provides airlines with a direction for measuring and improving their service quality with the goal of developing sustained competitive advantage over the long term. 相似文献
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为缓解铁路行车与施工维修作业的矛盾,提高人工和大型养路机械作业效率,在确保行车和施工安全的前提下,充分利用列车通过后的时间间隔或距离间隔,通过在较大区间设置施工维修分界点的方式,提高天窗利用率,增加设备管理单位施工维修纯作业时间。通过在中国铁路沈阳局集团有限公司通化工务段管内会同工务、车务、机务等单位,对大区间设置施工维修作业分界点的可行性进行了深度调研、试验和研讨,制定了大区间施工维修作业分界点办法,并对实施情况进行了跟踪指导,经过一段时间的实施,其综合效益较好。 相似文献
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铁路客运站营销工作受多方面因素影响,且大多数因素具有模糊性难以定量化。为此,以定性定量相结合的系统思想为指导,运用层次分析与模糊综合评价的相关方法,对客运站的营销工作质量进行综合评价。在介绍方法原理与步骤的基础上,应用层次模糊评价法对某客运站的营销工作质量进行了评价。 相似文献
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We formulate a multi-objective MILP model to find the optimal choice of suppliers and their order quantity allocation under disruption risk. Suppliers are evaluated and ranked, based on the preference values obtained using a hybrid fuzzy AHP-fuzzy PROMETHEE. Multi-objective Particle Swarm Optimization is then applied to yield a set of Pareto-optimal solutions for the choice of suppliers and their order allocation. Numerical experimentation suggests that the supplier failure probability affects the expected total cost more than supplier flexibility and loss cost. Sensitivity analysis is performed on the failure probability, the output flexibility, and loss cost of the suppliers. 相似文献
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This study included three phases. The first phase was to establish an evaluation hierarchy framework for organisational safety culture in accordance with the fuzzy Delphi method (FDM) and including expert perspectives. The second phase involved evaluating weight and rankings in order of importance using a fuzzy analytic hierarchy process. In the third phase, analysis of variance (ANOVA) and the Scheffe multiple comparison test were used to compare the different evaluation constructs and criteria of the airport's various internal safety management units. The study results demonstrated that Taipei Songshan Airport's general management units believed that ‘Safety Supervision’, ‘Safety-oriented Working Environment’ and ‘System of Incentives and Penalties’ should be considered implementation priorities to improve overall performance in the airport organisational safety culture. In addition, the ANOVA results revealed significant differences among the airport's management units with respect not only to the personal dimension, including ‘Safety Values’, ‘Safety Evaluation Standards’ and ‘Safety Management Updates’, but also to the situational dimension, such as ‘Safety Communication and Commitment’ and ‘Injury Rate’. 相似文献
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Driven by business strategies, digital transformation (DT) facilitates dramatic change in air passenger behavior. This study aims to determine and analyze different DT strategies (DTSs) with the help of an integrated SWOT-based fuzzy AHP-MARCOS methodology that is proposed for the first time in the literature for this purpose. This methodology is validated with a case study concerning the airline industry in Turkey. The weights of the SWOT factors are determined with the fuzzy AHP method. The fuzzy MARCOS approach is used to select the most suitable DTS. The most appropriate strategy is obtained as “focusing on differentiated digital customer experience and service quality by the adaptation of business models to DT to provide benefits”. 相似文献
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综合维修天窗与列车开行方案的协同优化研究 总被引：1，自引：0，他引：1
在提速后的铁路繁忙干线上,旅客列车开行方案比较复杂,需要兼顾包括天窗设置在内的多方面因素.在区段内考虑综合维修天窗与旅客列车的协调主要是优化两者之间的时间关系.运用同余思想分析旅客列车的合理开车范围.通过建立维修天窗与列车开行方案之间的协调优化关系模型,得出理论上的最佳天窗时段就是使概率频数最小的列车合理开车时间段. 相似文献