Model of Ground Handling Processes and Establishing Safety Mechanisms

The following paper focuses on the operational safety issues in the aircraft ground handling process. Ground handling is a critical phase in terms of operational safety, however, severe injuries or even fatal accidents are rare. According to the available data, during a handling process a quite large number of incidents have as an outcome a damaged aircraft, which slows down the following processes and fluency of the relevant procedures. The financial costs in case of even the slightest damage are significantly high.In order to implement different approach to safety management of ground handling companies, firstly a process analysis was performed using the Systems-Theoretic Accident Model and Process (STAMP) model. The STAMP model offers a different approach to operational safety as opposed to a traditional approach. STAMP approaches failure as a control error. The individual processes are designed for possible future STPA analysis. The processes were modelled according to the publicly available sources, and further improved with the expertise and experience from a real operation. A list of potential deviations is added to the processes or individual activities. Coordination processes between the ground handling company and the airport were also discussed. An operational measure designed to increase operational safety is proposed for selected cases

Public Transport to the Airport and Its Influence on Handling Process

The paper focuses on several possibilities of the mass public transport to the airport, including analyses of the expected impact on the various airport processes. Within the article, three main transportation system types will be described and compared. Firstly, the problem regarding current bus transfer system to the Václav Havel airport Prague will be analyzed. According to the analysis results the focus now turns to the description of the potential influence of the introduction of the new transfer systems, including the impact on the airport security and passport control process, and other procedures, which include some kind of a queuing process. This airport was chosen as the biggest airport in the Czech Republic, which in today and future business environment could expect problems related to the public transport of the passengers to and from the airport. Besides the description of the current structure, the paper tries to elaborate issues such as calculation of the queue waiting times and to propose a new system, more suitable for the given conditions. Results of the research include various calculations, such dependence of a modal split and intervals of the waiting times within a check-in process

Improvement of micropropagation protocol of Phalaenopsis sp. for the method of direct shoot regeneration from nodes of floral spikes

This paper succesfully investigated the possibility of modification of the micropropagation protocol of Phalaenopsis sp. with an aim to simplify the procedure and reduce the costs. The obtained results show that some medium components can be succesfully omitted (coconut water, glutamine, 2-morpholinoethanesulfonic acid) and some of them (peptone) can be replaced with a cheaper constituent (soy flour) while preserving the quality of the obtained microplants. The multiplication rate was 7,6 shoots per explant after the period of 150 days of cultivation in vitro. On the same medium 60% of explants were rooted and roots were mostly well developed

Osetljivost sojeva Candida spp. izolovanih kod čoveka i psa sa stomatitisom na etarsko ulje timijana

Candida spp. form a part of human and animal oral cavity flora. However Candida spp. is the main cause of dental related stomatitis in humans and stomatitis in dogs. Stomatitis treatment implies the use of azoles and polyenes to which yeasts build up resistance. The research is directed to the use of natural compounds such as essential oils. The aim of this paper is to define the antifungal activity of thyme oil on 15 clinical strains of Candida spp., isolated from humans and dogs and to determine if there is a difference in susceptibility between human and dog isolates. Sampling in patients with stomatitis was done by swabbing the denture or oral mucosa swab while sampling in dogs was done by swabbing the oral cavity mucosa after stomatitis has been diagnosed. In order to investigate the antifungal activity of thyme oil in vitro, microdilution method was used. Thyme oil expressed antifungal effects on all investigated strains. Also, our data show that the values of minimum fungicide concentration (MFC) and minimum inhibitory concentration (MIC) are lower in human strains. Explanation is that in most cases, stomatitis in humans is asymptomatic and thus not treated, so Candida strains have not developed resistance. On the other hand, stomatitis in dogs is followed by a marked clinical picture and treated is by antimicotics (mostly by azoles), therefore resistant Candida strains are more likely to occur.Candida spp. je sastavni deo mikrobioma usne duplje čoveka i psa. Međutim Candida spp. predstavlja glavni uzročnik proteznog stomatitisa kod čoveka i stomatitisa kod psa. Terapija stomatitisa podrazumeva korišćenje azola i poliena na koje poslednjih godina gljivice razvijaju otpornost. Istrživanja se usmeravaju ka primeni prirodnih preparata kao što su etarska ulja. Cilj rada je utvrdi antifungalnu aktivnost ulja timijana na kliničke izolate Candida spp. čoveka i psa, i utvrdi da li postoji razlika u osetljivosti sojeva Candide spp. izolovanih kod čoveka i psa. Uzorkovanje kod pacijenata sa stomatitisom je vršeno brisom proteze ili brisom sluzokože. Kod pasa je uzrokovanje vršeno brisom sluzokože usne duplje kada je dijagnostikovan stomatitis. Zasejani sojevi su in vitro tretirani korišćenjem mikrodilucione metode da bi se utvrdilo da li ulje timijana deluje na kliničke izolate Candida spp. čoveka i psa. Rezultati pokazuju da su vrednosti minimalne fungicidne koncentracije (MFC) i minimalne inhibitorne koncentracije (MIC) manje kod čoveka. Stomatitis je kod ljudi najčešće je asimptomatski, pacijenti se ne podvrgavaju lečenju, pa sojevi Candida spp. nisu razvili rezistenciju na antifungicidne preparate. Kod pasa stomatitis je praćen burnijom kliničkom slikom, leči se antimikoticima (uglavnom azolima) pa je verovatnoća pojave rezistentnih sojeva Candida spp. veća

Airport Ground Operations Risks and Establishment of the Safety Indicators

This paper brings a relatively new approach to air transport safety. This approach introduces the safety indicators whose application’s primer goal is to reduce the number of aviation safety events and to search for their causes. These causes are defined as factors contributing to safety event realisation. These are supposed to be adequately identified and then prevented or at least mitigated. Defined safety indicators are focused on airport processes and subjects

State Safety Programme and State Safety Plan - Part one – State Safety Programme structure

State Safety Programme and plan are considered the main instruments in safety management. In that matter, this paper focuses on their description and simultaneously tries to clarify a need and significance of their establishment and implementation within respective state. All elements, defined in ICAO doc. 9859 as State Safety Programme (SSP) fundamentals, are separately described. These elements are divided into four groups, further detailed in individual chapters – State Safety Policy and objectives, State Safety Risk management, State safety assurance, State Safety Promotion.</span

Suppression of torsional oscillations based on IMPACT controlling structure

In this paper, an algorithm for suppression of the torsional oscillations, in the computer controlled servo systems, is purposed. A few modification of the IMPACT structure (Internal Model Principle and Control Together) in the digitally controlled electrical drives are proposed. The IMPACT structure suitable for suppression of the torsional oscillations in a servo system with the flexible coupling has been presented. The approach, proposed in this paper, gives better solutions for the problem of the mechanical resonance in the modern servo drive than the previous ones. The presented structure is simple with a small number of adjustable parameters that could be easily set to achieve the desired robust, filtering, and dynamic properties of the system

State Safety Programme and State Safety Plan - Part two – States’ approaches to the issue

The aim of this article is to bring a closer look on the various state approaches to the State Safety Programme (SSP) and plan implementation and realization. Therefore, article describes and compares French, the United Kingdom, Finland, Belgium and Ireland approaches. Besides that, it also focuses on the differences between the old and newly issued French safety plan. The article brings an overview of the specific risks, defined in the individual state safety plans, and their classification into particular categorie