E-Jurnal Universitas Tunas Husada Tasikmalaya
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An Exploratory Research on Blockchain in Aviation: The Case of Maintenance, Repair and Overhaul (MRO) Organizations
No full textThe aircraft maintenance sector has high complexity with many intermediaries, multiple actors sharing data and needs to ensure high data security. The implementation of Blockchain technology can significantly contribute to the aforementioned characteristics. This research explores the implementation of Blockchain technology in Maintenance, Repair and Overhaul (MRO). For this research, a mixed-method approach was followed to obtain a holistic view of the adoption of Blockchain technology in an aircraft maintenance facility. Semi-structured interviews and a case study were used. The interview findings related to the current status of maintenance records management. The findings also highlighted the value of data storage within MRO’s and the benefits of Blockchain. The paper also discusses the readiness/willingness of aircraft maintenance facilities to implement Blockchain and the barriers to implementation. Recommendations and areas for further research are identified
Arts-based methods in business education: A reflection on a photo-elicitation project
No full textThis paper addresses research calls to explore the theory and practice of arts-based methods in business and management education to better understand the learning processes and the ways of knowing that these methods generate. By focusing on photo-elicitation as a pedagogical tool, we problematize an insufficient focus of current discourses on its arts-based origins and revisit photo-elicitation from an arts-based perspective. Based on a reflective account emerging from our teaching experience with photo-elicitation as an assessment strategy we provide a conceptualization of photo-elicitation as an (experiential) learning and teaching tool. This conceptualization teases out under-theorized elements (i.e. doing, power, multiple framing of meaning, audience) of the method and surfaces overlapping stages of a photo-elicitation learning process. We also offer novel insights into students’ encounters with the photo-elicitation method, thus illustrating the role of the method’s arts-based elements in understanding how learning occurs in such a context. Implications are also provided contributing to an understanding of the value of arts-based methods to the theory and practice of management education. </p
Eccentricity evolution of massive black hole binaries from formation to coalescence
No full textCoalescing supermassive black hole binaries (BHBs) are expected to be the loudest sources of gravitational waves (GWs) in the Universe. Detection rates for ground or space-based detectors based on cosmological simulations and semi-analytic models are highly uncertain. A major difficulty stems from the necessity to model the BHB from the scale of the merger to that of inspiral. Of particular relevance to the GW merger timescale is the binary eccentricity. Here we present a self-consistent numerical study of the eccentricity of BHBs formed in massive gas-free mergers from the early stages of the merger to the hardening phase, followed by a semi-analytical model down to coalescence. We find that the early eccentricity of the unbound black hole pair is largely determined by the initial orbit. It systematically decreases during the dynamical friction phase. The eccentricity at binary formation is affected by stochasticity and noise owing to encounters with stars, but preserves a strong correlation with the initial orbital eccentricity. Binding of the black holes is a phase characterised by strong perturbations, and we present a quantitative definition of the time of binary formation. During hardening the eccentricity increases in minor mergers, unless the binary is approximately circular, but remains largely unchanged in major mergers, in agreement with predictions from semi-analytical models based on isotropic scattering experiments. Coalescence times due to hardening and GW emission in gas-poor non-rotating ellipticals are 0.5 Gyr for the large initial eccentricities (0.5 ≤ e ≤ 0.9) typical of galaxy mergers in cosmological simulations
Lessons learned from the first 50 COVID-19 critical care transfer missions conducted by a civilian UK Helicopter Emergency Medical Service team
No full textBackgroundThe COVID-19 pandemic has placed exceptional demand on Intensive Care Units, necessitating the critical care transfer of patients on a regional and national scale. Performing these transfers required specialist expertise and involved moving patients over significant distances. Air Ambulance Kent Surrey Sussex created a designated critical care transfer team and was one of the first civilian air ambulances in the United Kingdom to move ventilated COVID-19 patients by air. We describe the practical set up of such a service and the key lessons learned from the first 50 transfers.MethodsRetrospective review of air critical care transfer service set up and case review of first 50 transfers.ResultsWe describe key elements of the critical care transfer service, including coordination and activation; case interrogation; workforce; training; equipment; aircraft modifications; human factors and clinical governance. A total of 50 missions are described between 18 December 2020 and 1 February 2021. 94% of the transfer missions were conducted by road. The mean age of these patients was 58 years (29–83). 30 (60%) were male and 20 (40%) were female. The mean total mission cycle (time of referral until the time team declared free at receiving hospital) was 264 min (range 149–440 min). The mean time spent at the referring hospital prior to leaving for the receiving unit was 72 min (31–158). The mean transfer transit time between referring and receiving units was 72 min (9–182).ConclusionCritically ill COVID-19 patients have highly complex medical needs during transport. Critical care transfer of COVID-19-positive patients by civilian HEMS services, including air transfer, can be achieved safely with specific planning, protocols and precautions. Regional planning of COVID-19 critical care transfers is required to optimise the time available of critical care transfer teams
Air pollution exposure assessment simulation of babies in a bike trailer and implication for mitigation measures 2
No full textYoung children are a vulnerable population cohort. They receive higher exposure to particulate matter than adults in outdoor roadside environments, necessitating research on an unexplored area of exposure to young children in electric bike trailers. We simulated the exposure profiles of an adult cyclist and young children sitting in a bike-trailer attached to it for multiple air pollutants – particulate matter ≤10µm in aerodynamic diameter (PM10), ≤2.5µm (PM2.5; fine particles), ≤1µm (PM1), BC, and CO2 – during the school run in the morning and afternoon hours. We assessed the differences in their exposure concentrations and analysed the impact of trailer covers and COVID-19 lockdown restrictions via simultaneous measurements under six settings forming three scenarios: (i) bike-trailer versus adult cyclist height; (ii) bike-trailer with and without the cover; and (iii) exposure during the lockdown and eased-lockdown periods. We carried out a total of 82 single runs covering a length of 172 km. These runs were repeated on a 2.1 km long predefined route between an origin (University campus) and destination (a local school) to simulate morning drop-off (08:00-10:00h; local time) and afternoon pick-up (15:00-17:00h) times of school children. Substantial variability was observed in concentrations of measured pollutants within each run (e.g., up to 97% for BC) and between different runs (e.g., ~93% for PM2.5 during morning versus afternoon) in bike-trailer. Compared with cyclist height, the average bike-trailer concentration of fine and coarse particles was higher by up to 14% and18%, respectively, during both morning and afternoon runs. The lockdown restrictions when schools were closed led to a reduction in bike-trailer PM2. concentrations by up to 91% compared with eased lockdown period when schools re-opened in March 2021. Trailer covers led up to 50% (fine particles) and 24% (BC; a component of PM2.5) reductions in concentrations compared with trailers without cover. Young children carried in bike trailers are exposed to higher air pollution concentrations compared with the cyclist, particularly during peak morning periods at urban pollution hotspots such as traffic lights
Linking Entrepreneurial Orientation to Environmental Collaboration: A Stakeholder Theory and Evidence from Multinational Companies in an Emerging Market
No full textRevisiting stakeholder theory as a potential theory of the firm giving rise to expectations about organizing, we analyze when and under what circumstances entrepreneurially oriented firms increase their environmental collaboration with suppliers. Specifically, we investigate the association between entrepreneurial orientation and environmental collaboration with suppliers by accounting for the degree of employees’ work engagement and market environment complexity as stakeholder-oriented moderators of this relationship. We test our hypotheses using multi-level analyses on 249 managers nested in 66 multinational companies (MNCs) in Turkey. We find that entrepreneurial orientation positively impacts environmental collaboration with suppliers. A high level of work engagement (as an organizing principle favouring a stakeholder focus) and a low level of market environment complexity (as an organizing principle favouring the customer as an instrumental stakeholder) moderate this linkage. We enrich the debate on entrepreneurial orientation, strategy, and environmental sustainability by providing logic rooted in stakeholder theory of the conditions under which MNCs’ entrepreneurial orientation in emerging markets prioritizes and privileges environmental collaboration with suppliers
Heat risk of mortality in two different regions of the United Kingdom Graphical abstract
No full textExecutive function, repetitive behaviour and restricted interests in neurodevelopmental disorders
No full textBackgroundIndividuals with genetic syndromes show unique profiles of repetitive behaviours and restricted interests (RRBs). The executive dysfunction account of RRBs suggests that in autistic (AUT) individuals executive function impairments underpin RRBs, but not communication and social interaction autistic characteristics.AimsTo 1) describe profiles of behavioural manifestations of executive function (EF behaviours) and 2) explore the relationship between EF behaviours and autistic traits across individuals with Cornelia de Lange (CdLS), fragile X (FXS) and Rubinstein-Taybi syndromes (RTS), and AUT individuals.MethodCarers completed the Behavior Rating Inventory of Executive Function – Preschool Version and the Social Communication Questionnaire. Data reporting on 25 individuals with CdLS (Mage = 18.60, SD = 8.94), 25 with FXS (Mage = 18.48, SD = 8.80), 25 with RTS (Mage = 18.60, SD = 8.65) and 25 AUT individuals (Mage = 18.52, SD = 8.65) matched on chronological age and adaptive ability were included in analyses.ResultsAll groups showed impairments across EF behaviours compared to two-to-three-year-old typically developing normative samples with no differences between groups. Different EF behaviours predicted RRBs in the syndrome groups with no associations found in the AUT group.ConclusionsSyndrome related differences should be considered when developing targeted interventions that focus on EF behaviours and/or RRBs in these groups
“They kind of found different ways of being together without being together” – family approaches to meeting children’s social needs during the COVID-19 pandemic.
No full textBefore the COVID-19 pandemic, there was already considerable concern for the mental health and wellbeing of UK children, including those of primary school age. Friendship and resilience are two factors which can help children to cope in times of adversity. The pandemic and measures such as lockdown and school closures made it difficult for children to maintain their friendships in the usual ways and moreover were themselves an enormous source of stress and worry, which is likely to have further impacted the mental wellbeing of the nation’s children. This study sought to explore how families experienced the pandemic in terms of their children’s lack of access to their habitual routines and contact with their friends, by interviewing fifteen mothers of primary school-aged children during the summer and early Autumn of 2020. Interviewees revealed how they and their children attempted to meet children’s social needs during the first national lockdown and its subsequent easing, aware, through attunement, that isolation and loneliness was detrimental to their children’s wellbeing. Reflexive thematic analysis was used to analyse and interpret the interview transcripts, and three main themes were constructed which explored the resilience and adaptation that parents and children exhibited in order to meet the children’s social needs. The implications and contribution of this research, as well as its limitations, are discussed. Children’s wellbeing, healthy development and their ability to cope in adversity are reliant on time and space to be with their friends (Graber et al., 2016). Caregivers can offer support and facilitation of this (online and offline) contact when children’s normal means of socialising become unavailable
Approximately in-person in the locked-down home: Approximation, digital ties and maternity amid the COVID-19 lockdown
No full textThis article explores strategies and practices of approximation to cope with needs of pregnancy and maternity in the locked-down home at a distinct point in time – the earliest lockdown in the course of the COVID-19 pandemic in the United Kingdom, where, disruption of in-person support, both formally and informally, had implications for new mothers, babies and families. Amid a turn to digital for mental health and related support, it appears, unsurprisingly from the fieldwork, that despite many benefits, the role of technology in this context has been complex, as contexts of use, maternal practices, literacies and the nature of perinatal support required deeply shaped the role technology played amid blanket lockdown restrictions. I explore attempts to 'approximate' in-person ties within the confines of mandatorily digitally mediated interactions by paying attention to the fatigue, materialities and unsettlement of approximation