ORCID Profile
0000-0002-9160-025X
Current Organisations
Queensland University of Technology
,
Queensland University of Technology Faculty of Health
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Publisher: Productivity Press
Date: 29-09-2020
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 02-2022
Publisher: Springer International Publishing
Date: 2021
Publisher: SAGE Publications
Date: 19-04-2023
DOI: 10.1177/21650799231157086
Abstract: Although medicinal cannabis is prescribed for conditions such as pain, epilepsy, nausea and vomiting during cancer treatment, evidence about associated adverse side effects is still evolving. Because adverse events (AEs) might impact the performance of workers, it is important to consider their implications on workplace health and safety (WHS). This study aimed to map the types and prevalence of the AEs associated with medical cannabis and articulate how those events could impact WHS. A scoping review of systematic reviews and/or meta-analyses published between 2015 and March 2021 was performed to identify the AEs of medicinal cannabis in adults. Publications in English and full text available online were collected from Embase, MEDLINE, PsychINFO, PubMed, Scopus, and Web of Science. Of 1,326 papers identified from the initial search, 31 met the inclusion criteria and were analyzed. The studies reported various AEs with the most predominant being sedation, nausea/vomiting, dizziness, and euphoria. Acute and chronic pain was the most prevalent disorder under review. Adverse events associated with the use of medicinal cannabis could increase workplace risks, including decreased alertness and reaction times, increased absenteeism, reduced ability to safely drive or operate machinery and an increased probability of falling. Focused research into the risk to workers and workplaces from the use of medical cannabis and related human performance impairment is urgently warranted.
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: Macrothink Institute, Inc.
Date: 11-12-2016
Abstract: class="Default" The continuous increase of accident and incident reports has indicated the potential of drones to threaten public safety. The published regulatory framework for small drones is not visibly based on a comprehensive hazard analysis. Also, a variety in the constraints imposed by different regulatory frameworks across the globe might impede market growth and render small-drone operations even more complicated since light drones might be easily transferred and operated in various regions with erse restrictions. In our study we applied the Systems-Theoretic Process Analysis (STPA) method to small-drone operations and we generated a first set of Safety Requirements (SR) for the authority, manufacturer, end-user and automation levels. Under the scope of this paper, we reviewed 56 drone regulations published by different authorities, and performed (1) a gap analysis against the 57 SRs derived by STPA for the authority level, and (2) Intra-Class Correlations in order to examine the extent of their harmonization. The results suggest that the regulations studied satisfy 5.3% to 66.7% of the SRs, and they are moderately similar. The harmonization is even lower when considering the range of values of various SRs addressed by the authorities. The findings from the drones’ case show that regulators might not similarly and completely address hazards introduced by new technology such a condition might affect safety and impede the distribution and use of products in the international market. A timely and harmonized standardization based on a systematic hazard analysis seems crucial for tackling the challenges stemmed from technological advancements, especially the ones available to the public.
Publisher: Inderscience Publishers
Date: 2016
Publisher: Inderscience Publishers
Date: 2016
Publisher: Hogrefe Publishing Group
Date: 03-2018
Publisher: International Journal of Safety Science
Date: 03-2018
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: EDP Sciences
Date: 2019
DOI: 10.1051/MATECCONF/201927302001
Abstract: In safety science and practice, there have been various safety models, each of them reflecting a particular approach to safety management and accident causality. The large variety of models suggested in literature and applied in practice serve the communication of erse perspectives towards safety and the need to consider contextual factors, but it does not allow the establishment of a common language within and across organisations and industry sectors. Considering the potential benefits of talking a lingua franca when it comes to safety and inspired by the Standard Model used in particle physics and recent suggestions from relevant studies, we thought of exploring the possibility to introduce a Standard Safety Model (STASAM). As a first step, we focused on four representative safety and accident models widely used, discussed and debated: the Swiss Cheese Model, AcciMap, Functional Resonance Analysis Method (FRAM) and Systems-Theoretic Accident Model and Processes (STAMP). We reviewed literature which compares the particular models, and we listed the strengths and weaknesses of each as a means to set the grounds for the STASAM. The combinations of these models with a focus to host their advantages and avoiding their disadvantages led to a three-level STASAM. The concept STASAM was used in two random incident investigation reports to assess its applicability and visualisation against the original models. The results of the application along with the STASAM concept were reviewed by three safety professionals and three safety researchers. The comments received were in the positive direction and indicated the potential of establishing an inclusive and commonly accepted safety/accident model. The next research phase will be the additional review of the STASAM and its pilot application to a variety of safety events and systems as a means to test its reliability and strengthen its validity.
Publisher: EDP Sciences
Date: 2019
DOI: 10.1051/MATECCONF/201927302003
Abstract: This paper utilises a methodology named “Risk SituatiOn Awareness Provision” (RiskSOAP). RiskSOAP expresses the capability of a system to meet its safety objectives by controlling its processes and communicating threats and vulnerabilities to increase the situation awareness of its end-users and support their decision-making. In reality safety-related system features might be partially available or unavailable due to design incompleteness or malfunctions. Therefore, respectively, the availability and capability of RiskSOAP mechanisms might fluctuate over time. To examine whether changes in RiskSOAP values correspond to a system degradation, we used the results of a previous study that applied the RiskSOAP methodology to the Überlingen mid-air collision accident. Complementary to the previous application where the RiskSOAP was calculated for four milestones of the specific event, in this study we ided the accident further into seventeen time-points and we calculated the RiskSOAP indicator per time-point. The results confirmed that the degradation of the RiskSOAP capability coincided with the milestones that were closer to the mid-air collision, while the plotting of the RiskSOAP indicator against time showed its nonlinear fluctuation alongside the accident development.
Publisher: EDP Sciences
Date: 2019
DOI: 10.1051/MATECCONF/201927302005
Abstract: In the frame of an on-going 4-years research project, the Aviation Academy Safety Management Systems (AVAC-SMS) metric for the self-assessment of aviation Safety Management Systems (SMS) was designed based on the Safety Management Manual of the International Civil Aviation Organization and in cooperation with knowledge experts and aviation companies. The particular metric evaluates three areas, namely (1) the degree of institutionalisation of SMS (design and implementation of processes), (2) the extent of managers' capability to deliver the SMS processes, and (3) the employees' perceived effectiveness of the SMS-related deliverables. The metric concludes with a score per area and per SMS component/element assessed, and it is scalable to the size and complexity of each organisation. Results of a survey at 18 aviation companies did not show statistically significant differences in their SMS scores across all three assessment areas but revealed a distance between the area of Institutionalization and the areas of Capability and Effectiveness. Also, differences were detected regarding the scores per SMS component and element within and across companies and assessment areas. The various assessment options offered for the AVAC-SMS metric accommodates the resources each SME and large company can invest in the application of the metric. Even the lowest level of resolution of the SMS metric can trigger companies to investigate further their weaker areas and foster their SMS-related activities. Therefore, the AVAC-SMS metric is deemed useful to organisations that want to self-assess their SMS and proceed to comparisons amongst various functions and levels and/or over time.
Publisher: Aviation Academy, Amsterdam University of Applied Sciences
Date: 2016
Publisher: Hogrefe Publishing Group
Date: 05-2016
Publisher: Elsevier BV
Date: 12-2023
Publisher: Elsevier BV
Date: 09-2018
Publisher: Emerald
Date: 18-01-2013
DOI: 10.1108/02656711311293544
Abstract: The aim of this paper is to explore the usefulness of repairable parts simple historical databases in assisting the human factors experts to identify candidate areas for applying human factors methods. Therefore, also contributing to the search for maintenance quality improvement. The study was based on the failure history of part fleets installed on the same type of jet engines, and used mean time between failures (MTBF) and failure rates plots, the Laplace trend test, the AMSAA‐Crow‐Duane model and serial correlations. Increasing and decreasing trends in failure rates indicated factors that cause deflection from the literature assumptions of constant failure mode and “as good as new” maintenance philosophy. Further statistical calculations revealed patterns between MTBF and frequency of maintenance, specific serial numbers (SN) vulnerability to replacement and depot maintenance tasks, correlations between MTBF and number of both installations and maintenances, and influence of the maintenance month on the maintenance‐failure hours' interval. The literature refers to the relation between the parts reliability and the human factors in the maintenance domain. The research confirmed the literature references in data collection problems coming from human factors interferences the patterns found were attributed to system deficiencies related to workload management, parts configuration management, supervision and manufacturing problems. The application of this research in combination with methods such as field observations and interviews of personnel involved in the maintenance domain can uncover specific maintenance working environment weaknesses and lead to suitable remedies.
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: Elsevier BV
Date: 08-2020
Publisher: Inderscience Publishers
Date: 2019
Publisher: Elsevier BV
Date: 05-2020
Publisher: MDPI AG
Date: 17-01-2020
Abstract: As part of the airworthiness requirements, an aircraft cannot be dispatched with an inoperative equipment or system unless this is allowed by the Minimum Equipment List (MEL) under any applicable conditions. Commonly, the MEL mirrors the Master MEL (MMEL), which is developed by the manufacturer and approved by the regulator. However, the increasing complexity of aircraft systems and the ersity of operational requirements, environmental conditions, fleet configuration, etc. necessitates a tailored approach to developing the MEL. While it is the responsibility of every aircraft operator to ensure the airworthiness of their aircraft, regulators are also required to publish guidelines to help operators develop their MELs. Currently, there is no approved standard to develop a MEL, and this poses a challenge to both aviation regulators and aircraft operators. This paper reviews current MEL literature, standards and processes as well as MEL related accidents/incidents to offer an overview of the present state of the MEL development and use and reinstate the need for a systematic approach. Furthermore, this paper exposes the paucity of MEL related literature and the ambiguity in MEL regulations. In addition, it was found that inadequate training and guidance on the development and use of MEL as well as lack of prior experience in airworthiness topics can lead to mismanagement and misapplication of the MEL. Considering the challenges outlined above, this study proposes the combination of system engineering and socio-technical system approaches for the development of a MEL.
Publisher: Springer International Publishing
Date: 2016
Publisher: Hogrefe Publishing Group
Date: 11-2015
DOI: 10.1027/2192-0923/A000083
Abstract: Abstract. Market competition and global financial uncertainty have been the principal drivers that impel aviation companies to proceed to budget cuts, including decreases in salary and work force levels, in order to ensure viability and sustainability. Under the concepts of Maslow and Herzberg’s motivation theories, the current paper unfolds the influence of employment cost fluctuations on an aviation organization’s accidents attributed to human error. This study exploited financial and accident data over a period of 13 years, and explored whether rates of accidents attributed to human errors of flight, maintenance, and r crews, correlate with the average employment expenditures (N = 13). In addition, the study took into account the relationship between average task load (ratio of flying hours per employee) and accident rates related to human error since task load, as part of total workload, is a constraint of modern complex systems. The results revealed strong correlations among accident rates linked to human error with the average employment costs and task load. The use of more specific data per aviation organizational department and professional group may further validate the results of this study. Organizations that seek to explore the association between human error and employment budget and task load might appropriately adapt the approach proposed.
Publisher: Aviation Academy, Amsterdam University of Applied Sciences
Date: 2016
Publisher: Hogrefe Publishing Group
Date: 09-2019
Publisher: Aviation Academy, Amsterdam University of Applied Sciences
Date: 2017
Publisher: Unpublished
Date: 2018
Publisher: EDP Sciences
Date: 2019
DOI: 10.1051/MATECCONF/201927301008
Abstract: Communication problems are acknowledged as hazardous eventualities affecting operations negatively. However, a few systematic attempts have been made to understand the pattern of communication issues and their contribution to safety events. In this paper, we present the AVAC-COM communication model and taxonomy based on the cybernetics approach and a literature review. The model elements and taxonomy variables regard the actors, signals, coders, interference, direction and timing, predictability, decoders, and channels. To test the applicability and potential value of the AVAC-COM framework, we analysed 103 safety investigation reports from aviation published between 1997 and 2016 by the respective authorities of Canada, the United States, Australia, the United Kingdom and the Netherlands. The overall results of the 256 cases of communication flaws detected in the reports suggested that these regarded more frequently Human-Media and Human-Human interactions, verbal and local communications as well as unfamiliarity of the receivers with the messages transmitted. Further statistical tests revealed associations of the region, time period, event severity and operations type with various variables of the AVAC-COM taxonomy. Although the findings are only indicative, they showed the potential of the AVAC-COM model and taxonomy to be used to identify strong and weak communication elements and relationships in documented data such as investigation and hazard reports.
Publisher: MDPI AG
Date: 10-06-2018
Publisher: Informa UK Limited
Date: 20-12-2018
Publisher: SAGE Publications
Date: 21-10-2022
DOI: 10.1177/03611981211051617
Abstract: Although effective risk management during operations relies on risk perception and risk communication, the aviation industry has not systematically considered the contribution of these two constructs to safety events. This study analyzed a representative s le of safety investigation reports (1) to identify the degree to which risk perception and communication and their factors have been influential overall and across various flight operation stages of investigated events, and (2) to examine whether their contribution has changed with time. The analysis of 140 reports showed environmental factors affected risk communication and perception most frequently, whereas emotional and physiological factors were found in the s le with very low frequencies. Also, risk communication and perception and their factors did not appear with the same frequency across the various flight stages, and a few variations were observed over time. The aviation industry could consider the results of this study to steer its efforts toward mitigating the adverse effects of factors related to ineffective risk perception and communication. This could include the inclusion of respective factors in safety reporting schemes, investigation methods and analyses and, possibly, a tailored approach to the various flight stages and targeted risk literacy interventions.
Publisher: Informa UK Limited
Date: 02-07-2016
Publisher: Elsevier BV
Date: 04-2022
Publisher: Productivity Press
Date: 29-09-2020
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: CRC Press
Date: 17-11-2022
Publisher: Elsevier BV
Date: 2024
Publisher: Elsevier BV
Date: 06-2023
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: Queensland University of Technology
Date: 2020
Publisher: Informa UK Limited
Date: 10-02-2022
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: Springer Science and Business Media LLC
Date: 27-01-2022
Publisher: International Information and Engineering Technology Association
Date: 30-09-2018
Publisher: Elsevier BV
Date: 10-2018
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: Wiley
Date: 02-08-2018
DOI: 10.1111/RISA.12867
Abstract: Currently, published risk analyses for drones refer mainly to commercial systems, use data from civil aviation, and are based on probabilistic approaches without suggesting an inclusive list of hazards and respective requirements. Within this context, this article presents: (1) a set of safety requirements generated from the application of the systems theoretic process analysis (STPA) technique on a generic small drone system (2) a gap analysis between the set of safety requirements and the ones met by 19 popular drone models (3) the extent of the differences between those models, their manufacturers, and the countries of origin and (4) the association of drone prices with the extent they meet the requirements derived by STPA. The application of STPA resulted in 70 safety requirements distributed across the authority, manufacturer, end user, or drone automation levels. A gap analysis showed high dissimilarities regarding the extent to which the 19 drones meet the same safety requirements. Statistical results suggested a positive correlation between drone prices and the extent that the 19 drones studied herein met the safety requirements generated by STPA, and significant differences were identified among the manufacturers. This work complements the existing risk assessment frameworks for small drones, and contributes to the establishment of a commonly endorsed international risk analysis framework. Such a framework will support the development of a holistic and methodologically justified standardization scheme for small drone flights.
Publisher: MDPI AG
Date: 15-11-2020
DOI: 10.3390/SU12229498
Abstract: Although the value and impact of safety award programmes (SAPs) have been criticised in literature, various programmes still operate within and across industries to recognise safety achievements, motivate employees and organisations, promote participation in safety improvements and raise the overall profile of nominees. In our study, following the request of a large aviation organisation (LAO) already implementing a SAP based merely on rates of safety events and occurrences, we introduced an award scheme by including and balancing safety positives and negatives as per the suggestions of contemporary safety thinking. The new SAP was based on the existing safety management system of the organisation and the data already available, included contributions to safety and considered differences in the context nominees operated along with lagging indicators. The pilot implementation of the new programme resulted in remarkable differences from the results obtained via the previous award scheme, a finding that satisfied management. Nonetheless, difficulties relating to the inadequate understanding of the new SAP by the targeted nominees and inconsistencies in the recording of data across the organisation led to the suspension of the programme after its first launch. Due to its limitations, this study does not recommend a safety awards standard for the industry. However, its methodological approach, the concepts embraced and the difficulties encountered could be considered by any organisation.
Publisher: American Chemical Society (ACS)
Date: 11-03-2021
Publisher: Elsevier BV
Date: 08-2023
Publisher: Elsevier BV
Date: 10-2017
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: Elsevier BV
Date: 11-2021
Publisher: Informa UK Limited
Date: 02-01-2020
Publisher: Elsevier BV
Date: 02-2022
Publisher: CRC Press
Date: 15-06-2018
Publisher: Elsevier BV
Date: 2015
Publisher: Elsevier BV
Date: 12-2022
Publisher: AHFE International
Date: 2022
DOI: 10.54941/AHFE1002684
Abstract: This study was performed at a truck manufacturing company with three production lines. It employed a paper-based survey with two demographic questions, 16 Likert-type questions covering physical, cognitive and organisational human factors, and three qualitative questions to invite workers to state improvement ideas and current challenges and strengths. The response rate was 35%. The median across the 70 completed surveys for all human factors areas investigated was M=3 out of 4 maximum, except for the quality of instructions (M=2), physical load demands (M=2) and job variety (M=4). Statistically significant differences amongst the three production lines were observed for four human factors aspects. The years of work experience in the company were found significantly and negatively correlated with three human factors aspects. Most of the improvements suggested by the workers were related to organisational and procedural aspects. A similar focus was revealed for the challenges met, whereas collegial relationships were appreciated as the strongest area.
Publisher: EDP Sciences
Date: 2019
DOI: 10.1051/MATECCONF/201927301001
Abstract: Modern safety thinking and models focus more on systemic factors rather than simple cause-effect attributions of unfavourable events on the behaviour of in idual system actors. This study concludes previous research during which we had traced practices of new safety thinking practices (NSTPs) in aviation investigation reports by using an analysis framework that includes nine relevant approaches and three safety model types mentioned in the literature. In this paper, we present the application of the framework to 277 aviation reports which were published between 1999 and 2016 and were randomly selected from the online repositories of five aviation authorities. The results suggested that all NSTPs were traceable across the s le, thus followed by investigators, but at different extents. We also observed a very low degree of using systemic accident models. Statistical tests revealed differences amongst the five investigation authorities in half of the analysis framework items and no significant variation of frequencies over time apart from the Safety-II aspect. Although the findings of this study cannot be generalised due to the non-representative s le used, it can be assumed that the so-called new safety thinking has been already attempted since decades and that recent efforts to communicate and foster the corresponding aspects through research and educational means have not yet yielded the expected impact. The framework used in this study can be applied to any industry sector by using larger s les as a means to investigate attitudes of investigators towards safety thinking practices and respective reasons regardless of any labelling of the former as “old” and “new”. Although NSTPs are in the direction of enabling fairer and more in-depth analyses, when considering the inevitable constraints of investigations, it is more important to understand the perceived strengths and weaknesses of each approach from the viewpoint of practitioners rather than demonstrating a judgmental approach in favour or not of any investigation practice.
Publisher: Amsterdam University Press
Date: 05-2018
Publisher: Elsevier BV
Date: 02-2015
Publisher: Macrothink Institute, Inc.
Date: 11-12-2016
Abstract: A literature review, which was conducted during the research project “Measuring Safety in Aviation – Developing Metrics for Safety Management Systems”, identified several problems and challenges regarding safety performance metrics in aviation. The findings from this review were used to create a framework for interviewing 13 companies in order to explore how safety performance is measured in the industry. The results from the surveys showed a wide variety of approaches for assessing the level of safety. The companies encounter and/or recognise problematic areas in practice when implementing their safety management. The findings from the literature review are partially confirmed and it seems that the current ways of measuring safety performance are not as straight forward as it might be assumed. Further research is recommended to explore alternative methods for measuring aviation safety performance.
Publisher: Informa UK Limited
Date: 20-01-2022
Publisher: EDP Sciences
Date: 2019
DOI: 10.1051/MATECCONF/201927301004
Abstract: In the frame of an on-going 4-years research project, the Aviation Academy Safety Culture Prerequisites (AVAC-SCP) metric was developed to assess whether an organisation plans and implements activities that correspond to prerequisites for fostering a positive safety culture. The metric was designed based on an inclusive theoretical framework stemmed from academic and professional literature and in cooperation with knowledge experts and aviation companies. The goal of the AVAC-SCP is to evaluate three aspects, namely (1) the extent to which the prerequisites are designed/documented, (2) the degree of the prerequisites’ implementation, and (3) the perceptions of the employees regarding the organizational safety culture as a proxy for the effectiveness of the prerequisites’ implementation. The prerequisites have been grouped into six categories (common prerequisites and just, flexible, reporting, information and learning cultures) and the metric concludes with scores per aspect and category. The results from surveys at 16 aviation companies showed that these companies had adequately included most of the Safety Culture Prerequisites (SCP) in their documentation where Just culture plans scored the lowest and Reporting culture plans were found with the highest percentage of planning. The level of SCP implementation was the same high as the organisational plans and quite uniform across the companies and sub-cultures. The perceptions were at the same overall level with implementation, but employees perceived the organisational environment as less fair and more flexible than managers claimed. Although the study described in this report was exploratory and not explanatory, we believe that the results presented in combination with the ones communicated to the participating companies can trigger the latter to investigate further their weaker areas and foster their activities related to Safety Culture Prerequisites. Also, the AVAC-SCP metric is deemed useful to organisations that want to self-assess their SCP levels and proceed to comparisons amongst various functions and levels and/or over time.
Publisher: Macrothink Institute, Inc.
Date: 11-12-2016
Abstract: align="center" strong Editorial of the 1 sup st /sup International Cross-Industry Safety Conference proceedings /strong
Publisher: Informa UK Limited
Date: 24-06-2017
Publisher: Macrothink Institute, Inc.
Date: 11-12-2016
Abstract: Modern engineering systems are complex socio-technical structures with a mission to offer services of high quality, while in parallel ensuring profitability for their owners. However, practice has shown that accidents are inevitable, and the need for the use of systems-theoretic tools to support safety-driven design and operation has been acknowledged. As indicated in accident investigation reports, the degradation of risk situation awareness (SA) usually leads to safety issues. However, the literature lacks a methodology to compare existing systems with their ideal composition, which is likely to enhance risk SA. To fill this gap, the risk SA provision (RiskSOAP) is a comparison-based methodology and goes through three stages: (1) determine the desired/ideal system composition, (2) identify the as-is one(s), (3) employ a comparative strategy to depict the distance between the compared units. RiskSOAP embodies three methods: STPA (System Theoretic Process Analysis), EWaSAP (Early Warning Sign Analysis) and dissimilarity measures. The practicality, applicability and generality of RiskSOAP is demonstrated through its application to three case studies. The purpose of this work is to suggest the RiskSOAP indicator as a measure for safety in terms of the gap between system design and operation, thus increasing system’s risk SA. RiskSOAP can serve as a criterion for planning system modifications or selecting between alternative systems, and can support the design, development, operation and maintenance of safe systems.
Location: United States of America
Location: United Kingdom of Great Britain and Northern Ireland
Location: Australia
Location: United Kingdom of Great Britain and Northern Ireland
Start Date: 2021
End Date: 2021
Funder: Lloyd's Register Foundation
View Funded ActivityStart Date: 2015
End Date: 2019
Funder: Nationaal Regieorgaan Praktijkgericht Onderzoek SIA
View Funded Activity