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Price: EUR 250.00Authors: Fajer, Marcia | Fischer, Frida Marina
Article Type: Research Article
Abstract: The aim of this manuscript is to describe and compare regulatory aviation agencies according to their subordination and attributions to investigate air accidents. Possible consequences in identifying the contributory factors are also presented. Distinct procedures investigating air accidents among agencies lead to a lack of standardization of the statistics, making it difficult to analyze the data globally. Separately the information does not configure the entire scenario of what occurred, affecting the analysis and subsequent interventions. We recommend a joint and collaborative work between the different committees that operate in the investigation of air accidents.
Keywords: air accidents, regulatory agencies, accidents investigation, organizational factors, standardization
DOI: 10.3233/WOR-2012-0152-175
Citation: Work, vol. 41, no. Supplement 1, pp. 175-177, 2012
Authors: Haslbeck, Andreas | Schubert, Ekkehart | Onnasch, Linda | Hüttig, Gerhard | Bubb, Heiner | Bengler, Klaus
Article Type: Research Article
Abstract: This paper describes an experimental study investigating pilots’ manual flying skills. In today’s line oriented flight training, basic flying skills are neglected frequently. So, the study examines the manual flying skills of commercial airline pilots under the influence of several performance shaping factors like training, practice or fatigue in a landing scenario. The landing phase shows a disproportionate high percentage of aircraft accidents and it is typically flown by hand. The study is to be undertaken with randomly selected pilots in a full motion flight simulator to ensure a high validity of the results.
Keywords: manual flying skills, training, practice, performance shaping factors
DOI: 10.3233/WOR-2012-0153-178
Citation: Work, vol. 41, no. Supplement 1, pp. 178-183, 2012
Authors: Martins, Edgard
Article Type: Research Article
Abstract: There are situations in the operation of complex machinery which is significant pressure. In need of capturing, interpreting and processing information from instruments, often in seconds. This occurs in the middle where it operates the pilot and the aircraft will be established a set of operations that will culminate with a maneuver, consisting of a substantial and binding set of procedures performed for this driver. This has little time to evaluate and act, supported by aircraft instruments and external environmental signals captured by the senses, which will stimulate conditioned actions that, if executed without due accuracy, is reflected in a …deadly mistake. These situations cause a state of tension and unpredictability, especially when there is bad weather and / or no visibility and bad wind conditions occur and are not supportive or even shrinkage, or even partial or total ability to operate the airplane happen.. Show more
Keywords: processing information, ergonomic, simulation
DOI: 10.3233/WOR-2012-0154-184
Citation: Work, vol. 41, no. Supplement 1, pp. 184-187, 2012
Authors: Andrzejczak, Chris | Karwowski, Waldemar | Mikusinski, Piotr
Article Type: Research Article
Abstract: A study investigating what factors are present leading to pilots submitting voluntary anomaly reports regarding their flight performance was conducted. Diffusion Maps (DM) were selected as the method of choice for performing dimensionality reduction on text records for this study. Diffusion Maps have seen successful use in other domains such as image classification and pattern recognition. High-dimensionality data in the form of narrative text reports from the NASA Aviation Safety Reporting System (ASRS) were clustered and categorized by way of dimensionality reduction. Supervised analyses were performed to create a baseline document clustering system. Dimensionality reduction techniques identified concepts or keywords …within records, and allowed the creation of a framework for an unsupervised document classification system. Results from the unsupervised clustering algorithm performed similarly to the supervised methods outlined in the study. The dimensionality reduction was performed on 100 of the most commonly occurring words within 126,000 text records describing commercial aviation incidents. This study demonstrates that unsupervised machine clustering and organization of incident reports is possible based on unbiased inputs. Findings from this study reinforced traditional views on what factors contribute to civil aviation anomalies, however, new associations between previously unrelated factors and conditions were also found. Show more
Keywords: Data Mining, Dimensionality Reduction, Text Records, Clustering, Incident Reports
DOI: 10.3233/WOR-2012-0155-188
Citation: Work, vol. 41, no. Supplement 1, pp. 188-197, 2012
Authors: Legg, Stephen | Hill, Stephen | Mundel, Toby | Gilbey, Andrew | Schlader, Zac | Raman, Aaron
Article Type: Research Article
Abstract: The decreased pressure in the cabin of a pressurised aircraft (typically equivalent to ~8000 ft) reduces the oxygen level so that the blood oxygen saturation of all occupants falls from >97% (normoxia) at sea-level to below 92% (mild hypoxia). Although exposure to mild hypoxia does not affect well-learned cognitive and motor performance of aircrew, it has been proposed that it can affect the performance of some complex cognitive performance tasks involving multiple demands typical of emergency tasks that may have to be performed by pilots. In order to simulate some of these complex cognitive demands, 25 student volunteers participated in …an experiment which assessed performance of complex logical reasoning and and multiple memory tasks before and after 2 hours of exposure to normoxia and mild hypoxia. Performance for the more difficult components of the complex reasoning task, especially involving conflict decisions, were marginally significantly degraded by mild hypoxia. Since the effects were only marginally significant future studies should investigate the effects of mild hypoxia on more subtle complex decision-making tasks. Show more
Keywords: altitude, psychology, performance, aviation, decision-making, novel tasks
DOI: 10.3233/WOR-2012-0156-198
Citation: Work, vol. 41, no. Supplement 1, pp. 198-203, 2012
Authors: Oglesby, James M.
Article Type: Research Article
Abstract: In the future planned interplanetary expedition mission to Mars, spaceflight crewmembers will be exposed to an environment that is completely unique from anything they are accustomed to on Earth. Due to the characteristics of these missions, a challenge will be to design an environment that allows crewmembers to easily work and live in for extended durations. One of the challenges associated with these future missions is supplying the crew with essential resources for survivability such as food and water. In this case, the waste management system can play a role in a closed-loop life support system, as provisions sent with …the crew will be severely limited with no opportunity for resupply. The following looks at the rationale of designing a system for collecting, storing, and recycling human bodily waste that (1) is considered user-friendly by crewmembers in regard to habitability in spaceflight, and (2) provides applications for a self sustaining closed-loop life support system that will aid the crew during the mission. Future design processes should consider adhering to these guidelines to help in the spaceflight crew’s living environment and the conduction of the interplanetary expedition. Show more
Keywords: aerospace, sustainability, spaceflight, waste management, resource management
DOI: 10.3233/WOR-2012-0157-204
Citation: Work, vol. 41, no. Supplement 1, pp. 204-208, 2012
Authors: McDonald, Nick | Ward, Marie | Morrison, Rabea
Article Type: Research Article
Abstract: People are central to system functioning and this role has been dramatically extended by new information technology. This makes possible the fundamental transformation of processes across systems of systems. Can Ergonomics research play an effective role in systems integration innovation? To have real world impact on such problems the system of R and D needs to sustain strong designs that address the functionality of socio-technical systems and support the implementation of innovations, taking into account the complexity of change, the importance of values of dignity and trust, and creating a common understanding amongst all stakeholders to enable design for operations. …Strong research designs are more expensive, difficult, risky and prolonged than more commonly practiced weaker designs. They require active engagement with the industrial or service provider and involve overcoming cultural and other barriers to effective implementation and change. To create a virtuous cycle of research-generated impact it is necessary for strong designs to be well supported in the research community and for real world impact to be central to performance criteria of research excellence. Unfortunately neither of these criteria appear to be fulfilled. To ameliorate this, deficiencies in the full cycle of systems integration innovation need to be addressed. Show more
Keywords: research impact, systems integration, implementation, design for operations, trust
DOI: 10.3233/WOR-2012-0158-209
Citation: Work, vol. 41, no. Supplement 1, pp. 209-218, 2012
Authors: Campos, Reginaldo | Martins, Edgard | Soares, Marcelo
Article Type: Research Article
Abstract: Maintenance tasks, especially in heavy maintenance, may not be completed in a single shift. Aircraft maintenance technicians often take work in progress by colleagues, and spend the incomplete work for a change of team. The need for accuracy and efficiency of information transfer in many cases, without having time to have a meeting to pass the service is a crucial aspect of maintenance work. The ideal shift change can occur normally before delivery and continues to proceed normally after delivery. Although a shift change create challenges for communication, they also offer opportunities to detect and correct errors, where the task …of delivery is an opportunity to identify the problem and fix it. In this case, the task was done correctly the first round, however, a problem began when the second round took. One example is a case in which the first round have removed a defective part for replacement and let the component of aircraft at end of turn with problems. Instead of ordering and installation of an operational component, the second round was then reinstall the faulty component, not realizing he had information about the problem attached. Show more
Keywords: applied ergonomics, reliability, flight security
DOI: 10.3233/WOR-2012-0159-219
Citation: Work, vol. 41, no. Supplement 1, pp. 219-221, 2012
Authors: Martins, Edgard | Soares, Marcelo
Article Type: Research Article
Abstract: The probes allow the pilot to control the aircraft speed was essential to the balance of the flight. Opinions of experts who claim that “the design of the plane would have exercised a not inconsiderable role in the occurrence of a disaster. ” These messages revealed a series of important operating errors in a zone of turbulence, “making the plane uncontrollable, leading to a rapid depressurization device, according to these reports. A lawsuit in Toulouse and in Brazil aims to recognition of the liability of Air France and Airbus not insignificant role in the design and operation of the aircraft …in the event of catastrophe. Opinions are taken from senior pilots that no commercial aviation training for certain situations abnormal flight that, if realized, could have influenced the pilots of the AF-447 to remove the plane’s fatal dive show what experiments performed in simulators for military pilots, who are permanently subject to critical flight situations. Show more
Keywords: processing information, human error, trainning
DOI: 10.3233/WOR-2012-0160-222
Citation: Work, vol. 41, no. Supplement 1, pp. 222-224, 2012
Authors: Bezerra, Flávio G.V. | Ribeiro, Selma L.O.
Article Type: Research Article
Abstract: Military air operations and law enforcement operations in helicopters are examples of activities that require high performance of the operator. This article aimed at presenting a preliminary analysis of data obtained in the initial study in order to validate the instruments and the research protocol that focuses on the analysis of the workload imposed on helicopter pilots in emergency situations. The research was conducted in an environment of real flight training and used the NASA-TLX Scale to assess the workload and an interview guide to obtain reports on the main tasks performed. Preliminary data obtained is related to the participation …of 10 (ten) volunteer pilots with experience in different types of helicopters. Four scenarios involving helicopter emergency procedures of HB-350 "Squirrel” were outlined. For this article, the analysis used only the data regarding the Physical and Mental Demands of the NASA-TLX Scale. Preliminarily, the results indicate that the "time pressure" as a factor contributing to increase mental requirement in emergency situations in flight, and that this increase was reflected in the request of mental processes such as: identification of the breakdown, attention and monitoring parameters. Future steps include extending the sample and adding physiological tools to better understand the effects of these types of emergencies on pilot performance and flight safety. Show more
Keywords: workload, NASA-TLX scale, helicopter emergency, subjective measures, mental demand
DOI: 10.3233/WOR-2012-0161-225
Citation: Work, vol. 41, no. Supplement 1, pp. 225-231, 2012
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