Airport airside planning and design is an essential process to provide guidance for construction, rehabilitation and development phases and to accommodate the required capacity and efficiency for ...airport operations based on international safety standards, recommendations, regulations and local limitations. However, airport operators are suffering from infrequent and unexpected risks that could occur and lead to reduced safety margins in airport airsides. Furthermore, safety is one of the most common challenges in airside operations; it should be periodically assessed and deeply investigated, tracking the causes of the risks and their potential impacts. To cope with these challenges, this thesis demonstrates a novel approach of safety design assessment process models to assess, review and manage planning and design during the existing conditions of an airport airside lifecycle by combining three techniques. This is a new methodology for incorporating risk assessment in airport airside planning and design systems and provides a helpful and periodical evaluation and decision-making tool. It is a useful model for airport stakeholders to investigate, quantify, and mitigate the possible functional safety threats to their operation. It will help to avoid underlying precursory hazards that contribute to airside safety risks and could increase awareness of potential risk situations.
Abstract The concept of an innovative human–machine interface and interaction modes based on virtual and augmented reality technologies for airport control towers has been developed with the aim of ...increasing the human performances and situational awareness of air traffic control operators. By presenting digital information through see-through head-mounted displays superimposed over the out-of-the-tower view, the proposed interface should stimulate controllers to operate in a head-up position and, therefore, reduce the number of switches between a head-up and a head-down position even in low visibility conditions. This paper introduces the developed interface and describes the exercises conducted to validate the technical solutions developed, focusing on the simulation platform and exploited technologies, to demonstrate how virtual and augmented reality, along with additional features such as adaptive human–machine interface, multimodal interaction and attention guidance, enable a more natural and effective interaction in the control tower. The results of the human-in-the-loop real-time validation exercises show that the prototype concept is feasible from both an operational and technical perspective, the solution proves to support the air traffic controllers in working in a head-up position more than head-down even with low-visibility operational scenarios, and to lower the time to react in critical or alerting situations with a positive impact on the human performances of the user. While showcasing promising results, this study also identifies certain limitations and opportunities for refinement, aimed at further optimising the efficacy and usability of the proposed interface.
•We estimate the impact of competition on airport efficiencies.•We use two different spatial matrices: distance and shared destinations matrix.•We find the existence of a spatial component not ...captured in traditional analysis.•We find that competition has positive and negative effect on the efficiency level.•The positive or negative effects depend on the distance considered.
This paper analyses the potential impact of airport competition on technical efficiency by applying the spatial stochastic frontier approach (SSFA) rather than the traditional model (SFA). The SSFA allows for isolating the cross-sectional spatial dependence and evaluating the role of intangible factors in influencing an airport's economic performance through the inclusion of the distance matrix and the shared destinations matrix calibrated for different distances. By analysing the statistical differences between the traditional and the spatial model, it is possible to identify the competition effects. This study includes 206 airports at the worldwide level. The results show the existence of the spatial component: we detected a different influence of airports’ efficiency levels according to the geographical distances. This could have not been captured by the traditional SFA. We conclude that when incorporating spatial spillover effects into the airport efficiency analysis, the efficiency dynamics are strongly dependent on the spatial distance among airports.
Abstract
The need for air transportation increases every year. Indonesian government is on a never-ending construction of airport infrastructure across new regional points to create equitable ...development. Airport is an infrastructure to connect between modes of transportation. One of the most important parts of airport is the passenger terminal. Passenger terminal requires a wide-span structural system in order to accommodate arrival and departure procedures without disturbing circulation. Large wide-span structure requires an effective construction system. This paper aims to describe wide-span structures in airport terminal buildings. The method used in this study is qualitative with comparative strategy, primary data are obtained by open interviews related to airport terminal data and the secondary data related to structure obtained by a variety of literature. Data are analysed by comparing structures and construction systems at two international airports that have different structure sizes and systems, namely Husein Sastranegara Airport and Kertajati Airport. The results of this study show that alternative choices of wide span structure systems are adjusted to the form concept and airport location.
With the rapid development of civil aviation, the number of airport flights is continually increasing and the low efficiency of flight ground services has become one of the main reasons for flight ...delays. Obtaining a precise description of the flight ground service network is of great importance to the efficient and safe operation of airports. In this study, we constructed a dynamic network model inference framework based on sliding window change point detection. First, a change point detection algorithm was proposed to divide all time points into two parts, namely, a set of possible change points and a set of completely impossible change points, which greatly reduces the true change point search space. Then, two novel change point elimination judgment rules were designed and combined with the structure learning algorithm to achieve iterative optimization within the possible change point sets, obtain the final true change points, and realize precise dynamic network inference. Based on the experimental results, our proposed method has a higher accuracy and computational efficiency than the state-of-the-art methods, and it can be easily adapted to large-scale datasets. Finally, the proposed model was used in an airport flight ground service analysis. Each day was divided into four stages and the potential dependence relationships between different nodes in each stage were accurately determined. Thus, the model has great practical significance for the accurate scheduling and efficient operation of airport ground services.
Airport pricing is considered as one of the most relevant issues for policymakers. According transport policy, pricing schemes should be at least partially based on marginal costs. This article aims ...at comparing the most relevant aeronautical airport charges with their corresponding marginal costs for the Spanish airports in the period before the partial privatization process. To that end, we have built very detailed airport charge variables, and then, have estimated a flexible short-run variable cost function system using a panel of thirty-five airports over a 6-year period. The results show that the evolution of aeronautical airport charges does not follow the trend of marginal costs. Moreover, these charges are set above the short-run marginal costs with the exception of the smallest and insular airports. Finally, we find the existence of non-neutral technological change and excess of capacity for the Spanish airports.
•The evolution of aeronautical airport charges does not follow the trend of their marginal costs.•Airport charges are set above the short-run marginal costs with the exception of the smallest and insular airports.•Existence of non-neutral technological change and excess of capacity for the Spanish airports.•Spanish regional airports need to be subsided by profitable airports.
This study, by integrating the perspectives of sociological, psychological, and service marketing and management, all of which affect the passenger experience, proposes a theoretical framework for ...the creation of the airport experience in relation to tourism. This research responds to the current phenomenon in which airports are offering other types of experiences within the airport terminal, expanding the role of an airport from being a utility for transportation into a place where various and different values can be offered. This research explores the current airport experience and adds to research on airport experience by clarifying ten key components necessary for airport passenger experience propositions based on existing research, the current industry phenomena, and the empirical study. The paper also underlines those components that can enhance passenger experience in relation to tourism and highlights the role that airports contribute to a destination.
The Saudis Bring War to Yemen's East Dahlgren, Susanne
Middle East report (New York, N.Y. 1988),
12/2018, Letnik:
48, Številka:
289
Journal Article
A new phase of the war appears to be unfolding in al-Mahra, the far eastern governorate of southern Yemen on the Indian Ocean next to Oman. In 2017 Saudi Arabian troops suddenly rolled through the ...streets of al-Ghaydha, the governorate capital, taking over the regional airport and announcing that the area had been placed under their security control. The real reason for the Saudi presence has become visible: to build a long sought oil pipeline from Saudi Arabia to the Indian Ocean through Mahari lands.
O Brasil como signatário da Convenção Internacional de Proteção dos Vegetais internalizou as Normas Internacional para Medidas Fitossanitárias n.o 15, que regulamenta o tratamento e inspeção de ...material de embalagem de madeira empregados no comércio internacional. De competência da fiscalização do Ministério da Agricultura, Pecuária e Abastecimento, e dado o crescente volume do trânsito internacional e o decrescente efetivo funcional, o órgão tem buscado a otimização de processos fiscalizatórios para fazer frente à demanda. Este estudo teve como objetivo estimar o potencial de dispensa de inspeção federal em embalagens de madeira por requerimentos de Declaração Agropecuária de Trânsito Internacional em importações do Terminal de Cargas do Aeroporto Internacional de Goiânia durante os meses de junho e julho de 2022. Para tanto empregou a revisão bibliográfica dos atos normativos e pesquisa documental para análise quantitativa. Encontrou-se significativa quantidade de requerimentos dispensáveis em que houve intervenção prévia da inspeção federal, por se tratar de cargas aéreas ingressas no país por outro terminal aeroportuário (32%), ou cargas marítimas desconsolidadas no porto de ingresso (11%). Isso pode significar uma economia de até 6.46% nos custos de armazenagem de importações em recintos alfandegados. As limitações deste estudo foram o estreito recorte temporal dado em virtude das limitações do sistema de informações do Vigiagro disponível para a unidade e a peculiaridade do terminal aeroportuário que, em que pese tratar-se de recinto alfandegado considerado tecnicamente como zona primária, funciona na prática como zona secundária, o que limita a aplicação do conhecimento produzido até o momento.
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