Search results for " aviation"
showing 10 items of 21 documents
Mortality from cancer and other causes in commercial airline crews: a joint analysis of cohorts from 10 countries.
2014
Background Commercial airline crew is one of the occupational groups with the highest exposures to ionising radiation. Crew members are also exposed to other physical risk factors and subject to potential disruption of circadian rhythms. Methods This study analyses mortality in a pooled cohort of 93 771 crew members from 10 countries. The cohort was followed for a mean of 21.7 years (2.0 million person-years), during which 5508 deaths occurred. Results The overall mortality was strongly reduced in male cockpit (SMR 0.56) and female cabin crews (SMR 0.73). The mortality from radiation-related cancers was also reduced in male cockpit crew (SMR 0.73), but not in female or male cabin crews (SMR…
Cross-sectional area of the paraspinal muscles and its association with muscle strength among fighter pilots: a 5-year follow-up
2019
Background: A small cross sectional area (CSA) of the paraspinal muscles may be related to low back pain among military aviators but previous studies have mainly concentrated on spinal disc degeneration. Therefore, the primary aim of the study was to investigate the changes in muscle CSA and composition of the psoas and paraspinal muscles during a 5-year follow up among Finnish Air Force (FINAF) fighter pilots. Methods: Study population consisted of 26 volunteered FINAF male fighter pilots (age: 20.6 (±0.6) at the baseline). The magnetic resonance imaging (MRI) examinations were collected at baseline and after 5 years of follow-up. CSA and composition of the paraspinal and psoas muscles wer…
The application of the Market Economy Investor Principle to assess the existence of economic advantage in case of differentiated airport charges of t…
2019
The commercial aviation market is one of the fastest growing and most liberalised sectors of the economy in the EU. Development of low cost carriers changed the aviation world as regional airports experienced a boost of traffic and prospects of their financial sustainability. On the other hand, the expansion of low cost carriers in the EU airports resulted in many complaints from full service airlines. This resulted in the development of case law, both at the Commission and The Court of Justice of the European Union (CJEU) level. According to the case law, price differentiation of airport charges is not considered as granting of economic advantage to the particular undertaking if a market e…
Contrail ice particles in aircraft wakes and their climatic importance
2013
[1] Measurements of gaseous (NO, NOy, SO2, HONO) and ice particle concentrations in young contrails in primary and secondary wakes of aircraft of different sizes (B737, A319, A340, A380) are used to investigate ice particle formation behind aircraft. The gas concentrations are largest in the primary wake and decrease with increasing altitude in the secondary wake, as expected for passive trace gases and aircraft-dependent dilution. In contrast, the measured ice particle concentrations were found larger in the secondary wake than in the primary wake. The contrails contain more ice particles than expected for previous black carbon (soot) estimates. The ice concentrations may result from soot-…
The emission reduction potential of electric transport modes in Finland
2021
The transportation sector has become the fastest growing source of greenhouse gas (GHG) emissions. One solution to mitigate the impacts is a shift towards electric modes. Where previous studies have only focused on the replacement of individual modes, our study presents a more holistic approach by comparing land-based, water-based and airborne transportation modes. We study the GHG emission reduction potentials of electric cars, buses, trains, ferries and aircraft in comparison to existing modes on 34 routes within Finland and across the Baltic Sea to Sweden and Estonia. By comparing the GHG emissions in carbon dioxide equivalents (CO2-eq) per passenger kilometer for each mode, we also cons…
ALTERNATIVE MODELS FOR REGIONAL AIRPORTS IN LATVIA
2021
Regional airports play a significant role inpromotion of connectivity and regional development. This is one of reasons whyairports are treated as public assets and in 77 % cases (airportsproviding scheduled air transport services) owned and operated by public sectorin the EU. 71 % of these publicairports have corporatized airport operators. Latviahas threepublic civil aviation airports planned for scheduled flights until 2015: Riga InternationalAirport as well as Liepaja Airportand Ventspils Airport (Kurzeme planning region). Latviacurrently has decentralised operational model of airports. Riga InternationalAirport is owned by state and operatedby a joint stock company.Regional airports are…
Darbības vārda laika un aspekta lietojums angļu valodā aviācijas teorētiskajās apmācībās
2021
Valodnieki jau iepriekš ir pētījuši ne tikai darbības vārda laiku un aspektu angļu valodā, bet arī darbības vārda izteiksmi, tādējādi izanalizējot precīzu darbības vārdu laika un aspekta pielietojumu un veicot iegūto rezultātu apkopojumu. Ir veikti vairāki pētījumi, kas koncentrējas un darbības vārda un aspekta lietojumu angļu valodas kā pirmās svešvalodas apguvē un kas piedāvā studentiem skaidras darbības vārdu laika un aspekta vadlīnijas vieglākai angļu valodas apguvei. Šī pētījuma mērķis ir analizēt darbības vārda laika un aspekta pielietojumu un to formu biežumu aviācijas teorētiskajās apmācībās, tāpēc kopumā tika veikti 8 audio ieraksti no pilotu skolas teorētiskajām lekcijām. Vieglāka…
Digital Technologies for Transport and Mobility: Challenges, Trends and Perspectives
2020
This white paper aims at presenting the ideas emerging from the different fields pertaining to transport and mobility, to describe the capacities of current state-of-the-art digital technologies and the perspectives that are expected to shape the future of transport and mobility.
Stress Assessment of Vestibular Endurance Training for Civil Aviation Flight Students Based on EEG
2021
AbstractObjectiveThe main goal of our study is to clarify the EEG characteristics of the stress response caused by vestibular endurance training under the real conditions.MethodsTen pilot trainees received a series of acute anti-vertigo training stimulations on the rotary ladder while recording electroencephalographic data (64 electrodes). Afterwards, the subject’s anti-vertigo ability was tested for the best performance after 1 month of training, and verifying whether it is relating to the EEG signals we collected before.Results(1) The absolute power ofαwaves in the C3 and C4 regions is same as the difference between 1 min before and 2 min after stimulation, and their activity is enhanced …
The emission reduction potentials of First Generation Electric Aircraft (FGEA) in Finland
2020
Under the looming climate crisis, aviation needs to find new solutions to cut its greenhouse gas emissions. One pathway towards zero emissions is the use of electric aircraft. While current battery technology will not allow for medium and long-haul flights at full capacity, on short-haul routes First Generation Electric Aircraft (FGEA) could play a significant role in the near future. Current FGEA under development could carry 9–19 passengers on distances of 400–1046 km by 2025. This study focuses on the emissions reduction potentials of FGEA in Finland. It compares the carbon dioxide equivalent (CO2-eq) emissions and real travel times (RTT) from door-to-door of FGEA on 47 routes with exist…