Lidé na fakultě
doc. Ing. Peter Vittek, Ph.D.

2024, Transportation Research Procedia, Amsterdam, Elsevier B.V.), p. 3-12), ISSN 2352-1465

Short-haul flights emit the most carbon dioxide per passenger kilometer. France was one of the first countries to pass a law abolishing them where they can be replaced by rail. This applies to domestic flights with a rail alternative journey time of no more than two and a half hours. The article provides a complete analysis of short flights that were abolished by law, that should have been but were not abolished, and that may not have been and were cancelled in the reporting period. These details were defined based on a comprehensive analysis of the flight schedules of 80 French airports. This brought unique results. A total of 49 flights were cancelled, 6 of them by law and 43 for other reasons. The research was conducted with data valid as of June 2022. In a first step, this work quantifies the air seat capacity that has been lost and the capacity offered on train services. It also estimates the total travel time of different types of transport, including stay at the station/terminal and travel to and from the point of departure/arrival. At the end, the paper quantifies the changes in air transport emissions resulting from the cancellation of flights under the law. The overall impact on climate change is described using the Well-To-Wheel method according to French Ministry for the Ecological Transition and ADEME Agency procedures. Finally, France's comprehensive approach to addressing the carbon footprint of aviation is described. The discussion provides a broader perspective on the assessment of this still very current issue.

Stať ve sborníku z prestižní konf. (Scopus)

2024, 12. MEDZINÁRODNÁ KONFERENCIA DOPRAVNÁ INFRAŠTRUKTÚRA V MESTÁCH, Žilinská univerzita v Žilině)

Článek se zabývá transformací funkcí železničních stanic a jejich redevolepmentem navazujícím na koncept chytrých měst a regionů. Využití budov železničních stanic se mění s ohledem na současné trendy, které jsou tvořeny kromě digitalizace také udržitelností, posilováním resilience, decentralizace a úsilím o zapojení místních komunit. O moderní železniční dopravě a o změně využití původních výpravních budov se začalo hovořit v 90. letech minulého století. Některé původní zejména provozní a ekonomické funkce zanikají a některé zcela odlišné, především sociokulturní vznikají. Na přelomu 20. a 21. století prošla železniční doprava v Evropě významnými změnami, které se významně odrazily v rozvoji osobní i nákladní dopravy. Klíčovou roli při prosazování těchto změn sehrála Evropská unie, která v roce 1991 iniciovala rozdělení provozování dráhy od provozování drážní dopravy a služeb pro cestující. Mezitím se vlastnictví a správa budov paralelně přesouvala z unitárních železničních podniků na provozovatele (manažery) infrastruktury. Nyní ale EU definuje pojem manažer stanice (station manager). EU ponechává zřízení a formu station managera na rozhodnutí členských států, tímto manažerem může být dopravce, správce infrastruktury, ale také úplně jiný subjekt, jako např. developer, obec atp. Manažer stanice se stará o údržbu, rozvoj a provoz těchto stanic a všech jejich zařízení a zajišťuje, aby plně vyhovovaly potřebám veřejnosti, kterou tvoří většinou cestující, v poslední době se ale s vytvářením nových funkcí připojují místní komunity i noví přirození stakeholdeři z blízkého okolí. V rámci článku budou představeny a metodologicky popsány modelové příklady dobré praxe při naplňování uživatelských potřeb, které vznikly po redevelopmentu vybraných železničních stanic.

Stať ve sborníku z mezinár. konf. česky

2023, 2023 Smart City Symposium Prague, New York, IEEE Press), ISBN 979-8-3503-2162-3, ISSN 2691-3666

The concept presented in this paper targets the issue of extensive passenger flows to the airport, which could strongly influence the overall on-time performance of various entities involved. The basic idea of the proposal is to better interconnect the airports' and Air Traffic Management infrastructure with the existing city's urban infrastructure. The goal of the concept is to utilize further available capacities, usable for absorbing certain passengers' flows, and that way enabling their better distribution, which is in line with the main industry stakeholders' interests. Virtual queueing represents the proposed principle, which opens the possibilities for improved guidance of the passengers from their point of origin to the airport (departure). According to the current operational situation, the passengers' guidance will target the most suitable journey options, which involve various points of interest within the city that passengers could visit and spend some time there. This creates additional capacity and places the passengers into the so-called virtual queues. The main beneficiaries of the proposed approach are passengers, with better planning and additional journey offers, airports, with better queueing management and on-time performance, and Air Navigation Service Providers, with reduced delays caused by passenger factors.

Stať ve sborníku z prestižní konf. (Scopus)

2023

Dokument představuje výsledek V03 (Poradní a doporučující materiály) projektu Inovativní způsob navigace vrtulníků letecké záchranné služby v České republice s využitím GNSS, postupů Point in Space a tratí Low Level Routes (CK01000031). Výsledek je nezbytnou součástí projektu, jelikož vedle definované koncepce jsou nutné také správné postupy pro její využití a zavedení do praxe. Hlavním přínosem výsledku je snazší a urychlená implementace postupů PinS v ČR.

Výsledky promítnuté do směrnic a nelegisl. předpisů

2023

Cílem této studie je navrhnout koncept provozu (CONOPS postupů PinS a LLR) a příslušnou studii bezpečnosti (Safety Study) umožňující využít přístrojové postupy pro lety vrtulníků (přiblížení, přistání, odlety, traťové lety) v neřízeném vzdušném prostoru a pod minimální výškou pro radarové vektorování, přičemž bude dosahovat akceptovatelné úrovně provozní bezpečnosti. Pro splnění tohoto cíle je třeba využít nejlepší praxi existujících postupů, identifikovat překážky současného prostředí a navrhnout jejich odstranění, definovat základní předpoklady bezpečných postupů, navrhnout koncept provozu pro PinS a koncept provozu pro nízké letové tratě (LLR – Low Level Routes), zhodnotit provozní bezpečnost navržených řešení, provést ekonomickou analýzu zavedení konceptů provozu a zhodnotit provozní přínosy při implementaci konceptů provozu, včetně analýzy dopadů na jiné uživatele vzdušného prostoru.

Oponovaná výzkumná zpráva v češtině

2022, Transportation Research Procedia, Amsterdam, Elsevier B.V.), p. 172-179), ISSN 2352-1457

This article introduces an adaptation of Flow centrality connectivity measure to business aviation. It demonstrates its potential in the COVID-19 case study, where a significant drop in traffic was observed. Its Connectivity Indicator shows a connectivity paradox during 2020, when connectivity values slightly decreased at first and subsequently exceeded their 2019 values during summer, indicating that airports were connected more effectively compared to the previous year. It is demonstrated in more detail by the examples of airports with the best and worst connectivity during April 2020 and explains the difference in their connectivity value and the number of flights in the context of the pandemic. The results show the potential of this two-dimensional measure in the sector and provide a foundation for further research on business aviation connectivity as a valuable tool for business aviation charter companies to optimize their operations. The study also outlines the economic value of business aviation for Europe and presents different flight missions carried out in this sector, including its key role of conducting medical and repatriation flights during the pandemic.

Stať ve sborníku z prestižní konf. (Scopus)

2022, 2022 New Trends in Civil Aviation (NTCA), Praha, České vysoké učení technické v Praze), p. 87-91), ISBN 978-80-01-06985-1, ISSN 2694-7854

Freight transported by air plays an important role in world economics. The covid pandemic had an unprecedently negative impact on passenger air transport, but air cargo maintained its performance. We could even see significant increase in some markets. Due to the increased demand for freight, the airlines had to deal with a shortage of capacity. This situation showed us, the importance of planning and optimizing the cargo fleet. One of the input factors for decision-making is the development of demand. This research was focused on the prediction of the air cargo demand on five routes: two within Europe, two Europe-Asia, and one Europe-N. America. The main source of data was the Eurostat database (data by months 1/2015-12/2020). Metric used was the weight of freight loaded and unloaded between selected cities in tonnes. Statistical significance of the data was assessed using linear and quadratic regression analysis. The prediction was performed using the Holt-Winter algorithm (1/2021-4/2022). One of the selected routes proved to be very demanding in terms of increasing traffic. The rest of the routes showed less increase in volume of air cargo transport. Validation of the method/prediction was performed by evaluating real data for the same period.

Stať ve sborníku z prestižní konf.

2022, 2022 New Trends in Civil Aviation (NTCA), Praha, České vysoké učení technické v Praze), p. 63-67), ISBN 978-80-01-06985-1, ISSN 2694-7854

The evolution of airports toward the Smart Airport concept is currently very topical. The Smart Airport concept brings the digitization and new technologies amongst other benefits. This article deals with the impact of smart technologies, implemented to increase the passenger throughput at airport processors, on waiting times in the queue. To enable simulating the impact of various passenger throughputs, a developed generic model, that can be primarily applied to arrival border control at any airport, was used. Based on the simulation results, the difference in the waiting times in the queue depending on different processing times and used technologies can be compared and analyzed. Therefore, the model can also be used to determine the impact of implementation of smart technologies on the passenger flow at the airport. A simulation performed in the model comparing manual, smart and hybrid configurations of the arrival border control is analyzed in this paper.

Stať ve sborníku z prestižní konf.

2022

Cílem koncepce národního výcvikového centra (NTC ARFF) je navrhnout a zhodnotit možnosti vytvoření NTC ARFF pro Českou republiku. Národní výcvikové centrum pro složky zajišťující hasičskou a záchrannou službu na letištích v České republice by umožnilo zajišťovat specifický výcvik pro personál, který by dostal specifický trénink zaměřený na leteckou dopravu, a tedy by dokázal řešit specifické situace, na které není prováděn všeobecný výcvik HZS. Vzhledem k tomu, že letiště a heliporty jsou klasifikovány v 10 + 4 kategoriích a pro výcvik je zvoleno 5 + 3 úrovně znalostí personálu, je nutné, aby NTC ARFF CZ odpovídalo těmto úrovním. Cílem návrhu NTC ARFF je zajistit potřebný výcvik vztažený k leteckému provozu, centrum nemá duplikovat výcvik poskytovaný HZS ČR.

Výzkumná zpráva v češtině

2022

Návrh a způsob ověření odborné přípravy ARFF je výsledek projektu TIRAMD905 a obsahuje navržený způsob jak ověřovat a hodnotit odbornou způsobilost členů ARFF v navržených oblastech teoretického přezkoušení, praktického přezkoušení a přezkoušení na pracovišti. Zároveň obsahuje checklisty pro zajištění souladu ARFF s legislativními požadavky a ukázky vhodné výzbroje pro ARFF na letištích od kategorie 3 výše.

Výzkumná zpráva v češtině

2022, 2022 Smart City Symposium Prague (SCSP), Vienna, IEEE Industrial Electronic Society), ISBN 978-1-6654-7923-3, ISSN 2691-3666

Airports worldwide are dealing with application of anti-epidemic measures, that lead to decreased capacity of airport terminals. Passengers are obliged to observe physical distancing and other rules, which in combination with longer service times at checks and controls lead to congestions in front of airport processors. This study aims to introduce new solutions for queue management at smart airports, that belong to the Smart Cities concept. The preliminary idea of buffer zones as waiting areas for passengers, that cannot be allowed to enter overcrowded areas, especially queues, brings new opportunities and benefits for both passengers and the airport. Based on performed simulations in the developed model, authors defined two types of buffer zones and determined the optimum time limit to distinguish between the two types of buffer zones. The paper brings theoretical and practical approach to use of buffer zones in real airport operations.

Stať ve sborníku z prestižní konf.

2022, Transport Means 2022. Proceedings of the 26th International Scientific Conference, Kaunas, Kaunas University of Technology), p. 190-194), ISSN 1822-296X

Due to the effects of therecentglobal pandemic, reduced air traffic and passenger numbers, aviation is experiencing significant changes inairport business models.Aviation is recovering rapidlyin 2022and is facing many operational challenges. The mostsignificant disturbances are caused bythe shortage of airport and ground handling staffresulting in queueing and overcrowding in particular airport areas. To mitigate the negative effects of these factors, there is aneed for optimization ofthe departingpassenger flowleading to improved airport operations and airport on-time performance.In this paper, we propose a newSmart City –Smart Airport interconnectionconceptwith utilization of virtual queueing technology, that addresses the current issues at airports. The solution would providedepartingpassengers with useful information including the most suitable arrival time at the airport to avoid extreme queueing. The airport might use the proposed solution to affect the arrival times of passengers to prevent overcrowding and creation of queues in airport terminals. This concept aims to bring opportunities and benefits tothe participants, such as passengers, airports, ground handling companies, airlines,andoperators of alternative collectors shifted into the urban infrastructure.

Stať ve sborníku z prestižní konf. (Scopus)

2021, MAD - Magazine of Aviation Development, 9 (1), p. 6-12), ISSN 1805-7578

The article's main purpose is to describe the proposed Methodology, which aims to present an approach to expressing the value of the air transport industry in the Czech Republic. This approach methodically divides the primary and secondary effects and finds metrics based on which the value of the air transport can be quantified. The proposed approach is based on equivalent methodological materials by ICAO, FAA, and other organizations describing and analyzing the value of air transports. The calculations are based on open data sources as well as data that are available by request. The methodology also proposes collecting new data to complete the picture of the value of air transport.

Článek v odborném recenzovaném periodiku cizojazyčně

2021, Proceedings of the “Transport Means 2021”, Kaunas, Kaunas University of Technology), p. 467-470), ISSN 1822-296X

The current pandemic situation caused that airports need to adapt their operational processes to new health protection measures that include for example physical distancing, use of face masks or more detailed cleaning and disinfection of airport terminals. Airport infrastructure is usually not designed for the full application of physical distancing principles. A model and an application were created in order to simulate the expected space per person in the arriving corridors of the terminal according to the imported flight schedule. The output of the model allows calculating of the decrease of airport operational performance in case of implementation of physical distancing principles. The results of the model also help to improve the efficiency of the use of space in airport terminals.

Stať ve sborníku z prestižní konf. (Scopus)

2021, 2021 Smart Cities Symposium Prague (SCSP), New York, IEEE Press), ISBN 978-0-7381-3158-0

Airports worldwide are evolving rapidly towards the Smart Airport concept, which brings many benefits to all stakeholders including passengers. The paper designs a new Smart Airport Service Layers Architecture (SASLA) that significantly supports the Airport 4.0 class of the current four-level classification methodology of airports. Demand Side System Services (DSSS) as a new essential idea delivered in this paper stand at the top of the Smart Airport Service Layers and make Airports 4.0 capable to negotiate with other smart components to provide new kind of services with benefits to all stakeholders. Multi-Agent Systems (MAS) were identified as an appropriate instrument for services prioritization.

Stať ve sborníku z prestižní konf. (Scopus)

2021

Tato studie je jedním ze dvou hlavních výstupů projektu TL01000421. Pod oficiálním označením TL01000421-V001 je publikována Metodika pro hodnocení přínosů letecké dopravy pro Českou republiku z provozně-ekonomického hlediska. Podle Metodiky je provedena tato Studie, která je výsledkem s označením TL01000421-V002. Studie představuje ucelenou zprávu hodnocení přínosů letecké dopravy pro Českou republiku z provozně-ekonomického hlediska s kvantifikovanými přínosy letecké dopravy z pohledu letišť, leteckých společností, leteckého průmyslu a leteckého podnikání v oblasti zaměstnanosti a turismu.

Výzkumná zpráva v češtině

2020, MAD - Magazine of Aviation Development, 8 (4), p. 12-19), ISSN 1805-7578

The initial motivation for studying and researching air transport socio-economic impacts is quantifying the value that air transport brings to the Czech Republic. The main challenge is to explore a methodology that would describe the macroeconomic and microeconomic relations within the Air transport industry. These relations will define the directions of the market forces flow and thus the Czech Republic’s value. The authors of the paper use an approach that follows methods and standards for collecting and processing economic and statistical data introduced by the International Civil Aviation Organization (ICAO), Eurostat, and the Czech Statistical Office (CZSO). The authors incorporate economic definitions and standards published by the United Nations under the World Trade Organization (UNWTO) and other accounting and statistical entities, which results in creating a methodical description of chosen relations. The methodical description leads to the quantification of the value. In a practical sense, it is a matter of determining the origin of the data sets according to which the selected relations will be defined. The paper focuses on the expression of Air transport’s primary and secondary effects and the description of the proposals, which will be part of the methodology.

Článek v odborném recenzovaném periodiku cizojazyčně

2020, Supply Chain and Logistics Management: Concepts, Methodologies, Tools, and Applications, Hershey, Information Resources Management Association), p. 1876-1906), ISBN 978-1-7998-0945-6

This chapter introduces a methodology on how to define a complex Security Index (SI) that brings the ability to measure the strength and the efficiency of the business entity´s security system. It describes how to provide an approach to the security performance measurement. In order to get SI it is necessary to develop a systematization of Security Index Determination Model (SIDM). SI describes Supply Chain Security Management (SCSM) performance. SCSM implements, facilitates and maintains Security barriers, which are formed by a confluence of properly chosen and efficiently implemented security measures. The presented methodology is based on the General Model developed by Gutiérrez and Hintsa that was expanded according to research needs. The expansion was based on adding the specified barriers for each of the Sub-categories stated in the previously mentioned General Model. For this purpose different security initiatives such as AEO, C-TPAT and TAPA were analysed. SIDM is based on Objectivized Methodology for Technical Systems Conditions Assessment developed by Lansky.

Kapitola v jiné knize

2020, Next Generation Komunikace, 57 (3), p. 56-58), ISSN 2570-8570

Letecká doprava je příkladem využití moderních telekomunikačních technologií ve smyslu propojování informačních systémů a využívání dat. Výměna informací probíhá v prostředí globálních systémů, které zajišťují přenos informací o jednotlivých letech, pasažérech, součas-né provozní situaci na jednotlivých letištích i ve vzdušném prostoru, environmentálních vlivech, ale také informace o počasí. Speciální telekomunikační infrastruktura umožňuje vynikající plánování ome-zených zdrojů a kapacit letecké dopravy v krátkodobém i dlouhodo-bém horizontu. Díky centrálnímu řízení toků letadel se efektivnost využití nebe nad Evropskou unií zlepšuje. Daří se postupně zvyšovat propustnost vzdušného prostoru i letišť, a také postupně omezovat zpoždění letů.

Článek v populárně vědeckém periodiku česky

2019, Proceedings of 2019 International Conference on Military Technologies (ICMT), Brno, Univerzita Obrany), ISBN 978-1-7281-4593-8

Maintenance planning and calculation of maintenance turnaround time require consideration of many influences. This leads to the calculated turnaround time usually not being precise. This paper deals with the time estimation of unscheduled works which may occur during maintenance of an aircraft and which can lead to financial losses or reduced usability of the aircraft for flying missions due to extended stay in a hangar bay. The main assumption is that there exists dependence between unscheduled works and predictors known prior to the maintenance. Two methods were considered to estimate the turnaround time, namely maximum likelihood estimation and Bayesian regression. The study was done in cooperation with Czech Airlines Technics company which provided necessary data from aircraft maintenance. The results indicate that, given the data normally available, only the model based on maximum likelihood estimation managed to reproduce reality when proposed for each aircraft type individually. The model was validated in the Czech Airlines Technics company and implemented into software environment.

Stať ve sborníku z prestižní konf. (Scopus)

2019, 2019 Konference - 25 let Fakulty dopravní, Praha, České vysoké učení technické v Praze), p. 102-105), ISBN 978-80-01-06545-7

Tento článek se zaměřuje na představení Ústavu letecké dopravy FD ČVUT v Praze. Charakterizuje jeho vědecko-výzkumnou a výukovou činnost. Představuje jednotlivé projekty a laboratoře, které v rámci Ústavu letecké dopravy kooperují, a které se podílejí na řešení význačných výzkumných projektů v rámci ČR i EU. Jsou zde také představeny jednotlivé úspěchy, kterých bylo dosaženo pod záštitou ÚLD a také vize a výhled do budoucích činností kolektivu Ústavu letecké dopravy.

Stať ve sborníku z fakultní konference česky

2018, Safety Science, 106 (106), p. 154-161), ISSN 0925-7535

Aviation safety data are limited in availability due to their confidential nature. Some aggregated overviews already exist but in order to effectively use the data, it is important to fill the gaps of their existing limitations. For some data, there are not enough data points in order to process them through advanced analysis. For other, only expert assumptions can be obtained. In both cases, these shortcomings can be addressed via proper data resampling or simulation where little effort can make the data suitable for various research and development initiatives. Examples of real aviation safety data made public are demonstrated together with key principles of how to perform their resampling. Then, for cases where only expert assumptions are available, general solution to the transformation of the assumptions into simulated data is introduced. The goal is to demonstrate how to transform accessible data or knowledge about aviation safety into data samples with sufficient granularity. The results provide general solution suitable not only for aviation safety data and knowledge, but also for similar transportation or high-risk industries related data issues, indicating that both the data resampling and simulation provide an option for generating datasets, which can be used for statistical inferential methods, linear regression modelling, recurrent analysis etc. Example of data resampling application is included in Aerospace Performance Factor calculation for years 2008 up to 2015.

Článek v periodiku excerpovaném SCI Expanded

2018, New Trends in Civil Aviation, Leiden, CRC Press/Balkema), p. 207-215), ISBN 978-0-8153-7602-6

This article presents and describes a new model, which evaluates various inputs with regard to an individual’s needs. Motivation for the new model was the need for creating a simple solution usable for every company. The article describes structures of currently used fatigue risk management models, their applicability, parameters comparison and evaluating criteria for procurement of commercially available models with its integration into the current fatigue risk management. The new model is based on this current knowledge and takes into account existing options for companies and therefore it offers applicable solutions in all aspects, including compliance with aviation legislation. This makes it usable for any aviation company.

Stať ve sborníku z prestižní konf. (Scopus)

2018, New Trends in Civil Aviation, Leiden, CRC Press/Balkema), p. 323-328), ISBN 978-0-8153-7602-6

In this paper, we show the recent trends in aircraft propulsion system design going in line with the European Union’s “ACARE FlightPath 2050” strategy. A short review of the actual aero-engines thermal cycle analysis and propulsion system analysis is provided, and the midterm evolution of the design parameters is explained, based on the application of the breakthrough technologies and developments of the fourth industrial revolution. The development of the classical propulsion units design is documented by the most advanced examples. On the basis of the long-term vision to meet future goals on the limits of greenhouse gas emissions as well as noxious exhalation and noise reduction, new design concepts of aircraft propulsion systems are shown. These include integration of an aircraft fuselage and wing with a propulsion unit, new propulsion concept of distributed propulsion integrated to the airframe, wing and body boundary layer ingestion, laminar flow wing, new concepts of electrical propulsion, supercooled electrical motors and generators, new principle of energy accumulation, alternative fuels, liquid hydrogen as a source of the propulsion power, and a medium for maintenance of the supercooled electrical power propulsion part.

Stať ve sborníku z prestižní konf. (Scopus)

2018, New Trends in Process Control and Production management, London, CRC Press), p. 513-516), ISBN 978-1-138-05885-9

The paper discusses the introduction of risk-based indicators and their subsequent use as a support tool for evaluating the economic efficiency of accepted safety measures. The first part is devoted to describing the principle of risk-based indicators, the second section describes usage of economic analysis and usage of risk-based evaluation indicators with regard to economic efficiency. The goal of this article is to declare new possibilities how to evaluate risks and how to assess cost and benefits for some safety measures. At the end there is a discussion about usage of risk-based indicators in a new economic way.

Stať ve sborníku z mezinár. konf.

2018, New Trends in Process Control and Production management, London, CRC Press), p. 293-298), ISBN 978-1-138-05885-9

This paper focuses on the distinction between safety, quality and reliability in the context of operations and production management. Integrated management systems are readily available but the drivers for their implementation are often market or profit based whilst the actual contribution of proper management with regard to each of the areas is frequently matter of confusion, especially with regard to safety. In the first part, theoretical background with the highlights of distinctions and overlapping areas between safety, quality and reliability are identified and analyzed. Subsequently, a case study from the domain of transportation demonstrates application issues as well as opportunities to benefit from synergy effects. Conclusions provide a rationale for correct distinction between respective management processes and the long-term advantage of their effective integration.

Stať ve sborníku z mezinár. konf.

2018, TRANSPORT MEANS 2018 - PROCEEDINGS OF THE 22nd INTERNATIONAL SCIENTIFIC CONFERENCE, Kaunas, Kaunas University of Technology), p. 709-713), ISSN 1822-296X

The paper focuses on the issues concerning enhancement of the safety data management through understanding of the internal data structure and system behaviour. To build a strong system foundation based on safety knowledge, and to find a system on how to gather such knowledge are the key issues in modern safety engineering. Systematic data collection is not a new concept, however, the focus was always on quantity, while data quality was often misunderstood or hard to understand and be dealt with. A research topic was therefore focused on quality and content of the available data, covering the state of the incoming data, their wider classification, analytics and utilization through instruments creating safety intelligence. Having a large amount of data, means having an ability for potential system behavioural pattern identification. This is however strongly influenced by data structure and applied analytical methods. Identifying behavioural pattern in other words means articulating a certain signal generated through system, carrying information regarding system state, functioning and potential deviations. Due to a fact that such system manifests as a stochastic one, it is highly influenced by certain level of internal or external noise. The goal of the research is to examine system abilities for behavioural deviations detection and elimination of the negative, unnecessary and inadequate structures in data gathering process.

Stať ve sborníku z prestižní konf.

2018, Transportation Research Procedia, Amsterdam, Elsevier B.V.), p. 35-43), ISSN 2352-1465

This paper deals with utilization of ontologies and conceptual structural models for improving safety data management in civil aviation maintenance, repair and overhaul organizations. It provides an overview of existing safety data management and identifies its shortcomings. Current approach to safety data management is based on global standards and regional regulations, which stem from long-term experience but recent development of advanced technologies and the demand for their versatile application creates new potential for further improvements of aviation safety. One of the technologies which have strong potential for application in aviation are ontologies and conceptual models. Ontologies deal with philosophy-motivated description of reality and conceptual models are ontology and object-oriented tools for building concrete description, the so-called conceptualization. Their value is recognized especially with regard to data management, such as data collection and processing. This is of extreme importance in modern knowledge management systems, such as safety management system, to optimize control mechanisms or to support research and development activities, which are highly sensitive to data quality, such as Safety-II concept. This paper explores the capabilities of the models with regard to current state-of-the-art in aviation maintenance and identifies strong points for domain application. Subsequently, framework for the technology deployment to the industry is outlined. Due to the non-existence of safety management requirements for aviation maintenance organizations and with regard to the current development of aviation safety in other aviation organization types, there exists strong willingness for such framework application and, according to the analysis performed, it represents one of the desired solutions for aviation industry.

Stať ve sborníku z prestižní konf.

2017, Proceedings of the 2017 International Conference on Military Technologies (ICMT), Brno, Ministerstvo obrany, Univerzita obrany), p. 500-506), ISBN 978-1-5386-1988-9

At present, several studies exist describing the relevance of human factor in air transport with main focus on pilots and flight safety. Within such studies, monitoring of physiological functions is used. There are lot of physiological parameters and methods of their assessment; however, they are mostly based on principles originating from clinical practice. Yet, sensitivity and specificity of these methods with regard to assessment of aviation professionals - pilots is unknown. Therefore, this paper is oriented towards description of the most common methods for physiological parameters assessment. The paper also describes evaluation methods, which are on experimental level in terms of physiological data evaluation, namely recurrent quantification analysis. Within the research carried out, sample group of pilots was subjected to measurement for evaluation of their psychophysiological condition and performance. Selected evaluation methods were applied on the collected data and importance of those parameters and methods, which provided best classification for level of psychophysiological stress, was evaluated by means of statistical analyses. The results indicate that the most important physiological parameter for psychophysiological condition assessment of pilots is heart electrical activity where the possibility to perform signal processing whilst preserving its importance is provided by linear methods in the time and frequency domain, or alternatively by non-linear methods utilizing recurrent quantification analysis.

Stať ve sborníku z prestižní konf. (Scopus)

2017, Journal of Aerospace Information Systems, 14 (5), p. 279-292), ISSN 1940-3151

European Coordination Centre for Accident and Incident Reporting Systems (EC- CAIRS) develops an information system for reporting aviation occurrences on the European scale. The system makes use of various taxonomies, like the taxonomy of event types, or a taxonomy of descriptive factors. However, the ECCAIRS data model and associated taxonomies are complex and difficult to understand, which reduces interpretability of the records. In this paper, we discuss problems ECCAIRS users face during occurrence reporting as well as subsequent search in reported occurrences. Next, we show how proper conceptual modeling with ontological foundations could leverage quality of occurrence categorization and thus better exploitability of the EC- CAIRS system. We demonstrate our ontological model on the Aviation Vocabulary Explorer, our new prototypical tool for exploring ECCAIRS.

Článek v periodiku excerpovaném SCI Expanded

2017, Proceedings of the 2017 International Conference on Military Technologies (ICMT), Brno, Ministerstvo obrany, Univerzita obrany), p. 392-396), ISBN 978-1-5386-1988-9

This paper deals with research of safety performance predictions to allow improved risk control in military. Safety performance is identified as appropriate tool to establish system-wide information on safety which can serve the decision making process on how to manage safety. The information contributes to better understanding of behavioural patterns in the controlled system and the ability to foresee short-term future can provide key elements for justification of remedial measures. Aviation safety data served the research due to confidentiality restrictions in military. Data deficiencies were addressed by the means of developed simulator. Suitable mathematical models were identified and autoregressive model was selected and applied to predict computed safety performance. At the end, it was possible to validate the model. Remarks on its potential application into real military environment conclude this work.

Stať ve sborníku z prestižní konf. (Scopus)

2017, TRANSPORT PROBLEMS, 12 (2), p. 89-97), ISSN 2300-861X

The Laboratory of Aviation Safety and Security at CTU in Prague has recently started a project aimed at runway protection zones. The probability of exceeding by a certain distance from the runway in common incident/accident scenarios (take-off/landing overrun/veer-off, landing undershoot) is being identified relative to the runway for any airport. As a result, the size and position of safety areas around runways are defined for the chosen probability. The basis for probability calculation is a probabilistic model using statistics from more than 1400 real-world cases where jet airplanes have been involved over the last few decades. Other scientific studies have contributed to understanding the issue and supported the model’s application to different conditions.

Článek v periodiku excerpovaném databází Scopus

2017, TRANSPORT MEANS 2017 - PROCEEDINGS OF THE INTERNATIONAL SCIENTIFIC CONFERENCE, Kaunas, Technical University), p. 346-350), ISSN 1822-296X

The idea of integrated aviation industry-wide safety (risk) management system and control mechanism require a common development level of the relevant sectors of included stakeholders. To construct such a system the three structural layers must be well defined, understood and functional. These are intra organizational, inter organizational and industry layer. As the name suggests, intra organizational layer include individual aviation organizations, subjects, their structure and systems. Inter organizational layer focuses on mutual relations between individual organizations or subjects, while industry layer includes a high-level mechanism controlling current state of safety and leading a strategic development. This paper focuses on the intra and inter organizational level by bringing a closer look into individual organizations’ processes and mechanisms used as a tool for a creation of the path leading to integrated safety (risk) management system, described in more detail in previous articles. It introduces a new approach and systematic changes needed for gathering more valuable safety related data, required for proactive management of the internal processes. Airports and other systems closely connected to them are taken as a main subject for the analysis. The main goal is to provide an explanation on how such internal structure should be set in order to become an efficient element of the proposed system.

Stať ve sborníku z prestižní konf.