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عنوان فارسی مقاله:
تاثیر تنوع در شیوه های گزارش دهی بر اعتبار فرآیندهای ارزیابی ریسک برخورد پرنده برای فرودگاه
عنوان انگلیسی مقاله:
The impact of variation in reporting practices on the validity of recommended birdstrike risk assessment processes for aerodromes
سال انتشار : 2016
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بخشی از مقاله انگلیسی:
2. Materials and methods
2.1. Detailed description of the current birdstrike risk assessment methodology Table 1 shows the risk assessment matrix published by Allan (2006). The probability categories are based on a 5 year rolling mean of the number of strikes reported per year with a particular bird species at the airport being risk-assessed. The severity categories are based on national data combining all strikes for the species concerned and determining the proportion of those strikes that resulted in damage to the aircraft involved. There is a problem when calculating the severity measure for rarely struck bird species because the proportion of strikes resulting in damage varied widely due to random chance. In order to control this variation, a linear regression of proportion of strikes causing damage against mass, weighted according to the number of strikes recorded for each species (expressed as a percentage), was calculated. This used only species struck more than 5 times during the period in question. Assuming that different bird species of similar mass caused similar damage, the proportion of strikes resulting in damage (i.e. the measure of severity in the matrix) could then be read directly from the graph for any species for which the body mass was known. Reexamination of the data shows that the fit of the data to the linear regression model is poor, with high residual values (i.e. a poor fit to the line). It was not possible, however, to find an alternative, more complex, model that provided a good fit to the data. Because any risk assessment model needs to be easy to use and understandable by the airport staff involved, and because Allan (2006) used a simple weighted linear regression in the original methodology, this paper has kept to the same process for the purposes of this re-evaluation.
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کلمات کلیدی:
[PDF]The Completeness and Accuracy of Bird Strike Reporting ... - SKYbrary skybrary.aero/bookshelf/books/1157.pdf Nov 4, 2006 - The Completeness and Accuracy of Birdstrike Reporting in the UK .... suggests that these were not due to purely random variation and changes had .... possibly, a need for guidance to encourage best practice in sharing information .... Operators need to be reminded to consider the statistical validity. [PDF]an assessment of bird strike risk at national level - International Bird ... www.int-birdstrike.org/Athens_Papers/IBSC27%20WPVI-1.pdf by D Nicholls - Related articles May 27, 2005 - Variations in reporting rate confound the picture ... The major influences on risk were identified and corresponding measures to reduce risk suggested. ..... Its validity was reviewed using an analysis of expert advice on over 200 planning ... consider issuing guidance on best practice control in low visibility. 6 ... [PDF]Wildlife Hazard Management at Aerodromes - Civil Aviation Authority https://publicapps.caa.co.uk/docs/33/CAP%20772Issue1.pdf Standards, recommended practices and requirements. 7 ... and standards supported by the International Birdstrike Committee, ACI and the .... reporting control issues to aerodrome management and airside or flight ..... strike occurrences to ensure validity. ..... dependent on the weed species present and seasonal variation. A Land-Use Perspective for Birdstrike Risk Assessment: The Attraction ... https://www.ncbi.nlm.nih.gov › NCBI › Literature › PubMed Central (PMC) by F Coccon - 2015 - Cited by 1 - Related articles Jun 26, 2015 - Collisions between aircraft and birds, birdstrikes, pose a serious ... It follows that land-use practices within this radius from the airport .... In fact, this is a relatively recent past, thus not affected to long-term variations in wildlife populations. ... to the Bird strike Reporting Form (BSRF), available in the APT01-B, ... Wildlife Strike Risk Assessment in Several Italian Airports ... - CORE https://core.ac.uk/display/8657153 This second version of the Birdstrike Risk Index (BRI2) is a sensitive tool that ... The impact of variation in reporting practices on the validity of recommended ... Journal of Air Transport Management Open Access Articles - Elsevier https://www.journals.elsevier.com/journal-of-air-transport.../open-access-articles Oct 10, 2016 - The variation in Level of Service (LOS) and the objective of the Public ... The impact of variation in reporting practices on the validity of recommended ... Birdstrikes are a major hazard to aviation; costing millions of pounds a ...
