scholarly journals Air Traffic Forecast Empirical Research Based on the MCMC Method

2012 ◽  
Vol 5 (5) ◽  
Author(s):  
Jian-bo Wang ◽  
Chong-jun Fan ◽  
Lei Bai
Pomorstvo ◽  
2019 ◽  
Vol 33 (1) ◽  
pp. 92-101
Author(s):  
Dora Naletina ◽  
Kristina Petljak ◽  
Marta Sremac

Air traffic is a very important traffic branch, since it provides the possibility of fast travelling long distances between countries and contributes to the development of economy, trade and tourism. The number of long-distance travels has been increasing, people have started to travel more and therein, the importance of air traffic has been growing. The Republic of Croatia has to take advantage of its favourable geographical position at the crossroads of West and East Europe, which facilitates the development of air traffic. Airports have major significance for the development of air traffic, and it is of great importance that they provide high quality services, i.e. that their users are satisfied. With the aim of establishing the level of user satisfaction with transportation and the supporting services in Croatian airports, an empirical research via an online survey has been conducted, where the respondents were asked about how often they used the airports in the Republic of Croatia, their supporting services, the importance of the factors influencing the decision-making on buying the ticket for the specific airline and overall satisfaction with the services in Croatian airports. The results of the primary research suggest that the users, when deciding on buying the ticket, put the price and safety first. The users are not entirely satisfied with the price-quality ratio and are not content with the prices of the parking in airports and with the airport facilities that provide hospitality services. Furthermore, it has been established that user satisfaction with transportation and the supporting services can be perceived through three factors: 1) additional services; 2) user satisfaction with additional services; 3) satisfaction with the staff and prices of additional services. The paper also analysed user satisfaction with transportation and the supporting services considering socio-demographic characteristics of the respondents. The key limitation of the research paper is the impossibility of conducting the research on site, at Croatian airports, where the users have “contact with the service”, especially the supporting services. It is highly plausible that conducting research at the airports would contribute to more representative research findings and recommendations for the management.


2008 ◽  
Vol 18 (1) ◽  
pp. 19-24
Author(s):  
Erin C. Schafer

Children who use cochlear implants experience significant difficulty hearing speech in the presence of background noise, such as in the classroom. To address these difficulties, audiologists often recommend frequency-modulated (FM) systems for children with cochlear implants. The purpose of this article is to examine current empirical research in the area of FM systems and cochlear implants. Discussion topics will include selecting the optimal type of FM receiver, benefits of binaural FM-system input, importance of DAI receiver-gain settings, and effects of speech-processor programming on speech recognition. FM systems significantly improve the signal-to-noise ratio at the child's ear through the use of three types of FM receivers: mounted speakers, desktop speakers, or direct-audio input (DAI). This discussion will aid audiologists in making evidence-based recommendations for children using cochlear implants and FM systems.


2015 ◽  
Vol 5 (1) ◽  
pp. 3-17 ◽  
Author(s):  
Michaela Schwarz ◽  
K. Wolfgang Kallus

Since 2010, air navigation service providers have been mandated to implement a positive and proactive safety culture based on shared beliefs, assumptions, and values regarding safety. This mandate raised the need to develop and validate a concept and tools to assess the level of safety culture in organizations. An initial set of 40 safety culture questions based on eight themes underwent psychometric validation. Principal component analysis was applied to data from 282 air traffic management staff, producing a five-factor model of informed culture, reporting and learning culture, just culture, and flexible culture, as well as management’s safety attitudes. This five-factor solution was validated across two different occupational groups and assessment dates (construct validity). Criterion validity was partly achieved by predicting safety-relevant behavior on the job through three out of five safety culture scores. Results indicated a nonlinear relationship with safety culture scales. Overall the proposed concept proved reliable and valid with respect to safety culture development, providing a robust foundation for managers, safety experts, and operational and safety researchers to measure and further improve the level of safety culture within the air traffic management context.


2019 ◽  
Vol 9 (1) ◽  
pp. 2-11
Author(s):  
Marina Efthymiou ◽  
Frank Fichert ◽  
Olaf Lantzsch

Abstract. The paper examines the workload perceived by air traffic control officers (ATCOs) and pilots during continuous descent operations (CDOs), applying closed- and open-path procedures. CDOs reduce fuel consumption and noise emissions. Therefore, they are supported by airports as well as airlines. However, their use often depends on pilots asking for CDOs and controllers giving approval and directions. An adapted NASA Total Load Index (TLX) was used to measure the workload perception of ATCOs and pilots when applying CDOs at selected European airports. The main finding is that ATCOs’ workload increased when giving both closed- and open-path CDOs, which may have a negative impact on their willingness to apply CDOs. The main problem reported by pilots was insufficient distance-to-go information provided by ATCOs. The workload change is important when considering the use of CDOs.


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