Age-related maintenance versus reliability centred maintenance: a case study on aero-engines

2000 ◽  
Vol 67 (2) ◽  
pp. 113-118 ◽  
Author(s):  
J Crocker ◽  
U.D Kumar
Keyword(s):  
2013 ◽  
Vol 3 (3) ◽  
pp. 219 ◽  
Author(s):  
Mette Lykke Nielsen ◽  
Johnny Dyreborg ◽  
Pete Kines ◽  
Kent J. Nielsen ◽  
Kurt Rasmussen

Young adult workers aged 18–24 years have the highest risk of accidents at work. Following the work of Bourdieu and Tannock, we demonstrate that young adult workers are a highly differentiated group. Accordingly, safety prevention among young adult workers needs to be nuanced in ways that take into consideration the different positions and conditions under which young adult workers are employed. Based on single and group interviews with 26 young adult workers from six various sized supermarkets, we categorize young adult retail workers into the following five distinct groups: ‘Skilled workers,’ ‘Apprentices,’ ‘Sabbatical year workers,’ ‘Student workers,’ and ‘School dropouts.’ We argue that exposure to accidental risk is not equally distributed among them and offer an insight into the narratives of young adult workers on the subject of risk situations at work. The categorizations are explored and expanded according to the situated ways of ‘doing’ risk and safety in the working practices of the adult workers. We suggest that the understanding of ‘young’ as an age-related biological category might explain why approaches to prevent accidents among young employees first and foremost include individual factors like advice, information, and supervision and to a lesser degree the structural and cultural environment wherein they are embedded. We conclude that age cannot stand alone as the only factor in safety prevention directed at workers aged 18–24 years; if we do so, there is a risk of overemphasizing age-related individual characteristics such as awareness and cognitive limitations before structural, relational, and hierarchical dimensions at the workplace.


2015 ◽  
Vol 7 (3) ◽  
pp. 78-92 ◽  
Author(s):  
Lilit Hakobyan ◽  
Jo Lumsden ◽  
Dympna O'Sullivan

Ongoing advances in mobile technologies have the potential to improve independence and quality of life of older adults by supporting the delivery of personalised and ubiquitous healthcare solutions. The authors are actively engaged in participatory, user-focused research to create a mobile assistive healthcare-related intervention for persons with age-related macular degeneration (AMD): the authors report here on our participatory research in which participatory design (PD) has been positively adopted and adapted for the design of our mobile assistive technology. The authors discuss their work as a case study in order to outline the practicalities and highlight the benefits of participatory research for the design of technology for (and importantly with) older adults. The authors argue it is largely impossible to achieve informed and effective design and development of healthcare-related technologies without employing participatory approaches, and outline recommendations for engaging in participatory design with older adults (with impairments) based on practical experience.


2012 ◽  
Vol 442 ◽  
pp. 104-108
Author(s):  
Xiao Lan Bai ◽  
Yu Zhang

Pipe routing is to design the routes for pipes in 3D space, meeting various constraints and engineering rules. This paper proposes the engineering rules-based orthogonal and variable-steps pipe routing algorithm. Firstly, the cylindrical coordinate system was adopted to describe the layout space and obstacles. In view of two endpoints of the pipe and obstacles in between, the local searching space was built. Then, the searching algorithm was given according to engineering rules, which was involved with the orthogonal searching directions and their order, the searching variable-steps. Moreover, the specific flow of this algorithm was described. The algorithm requires less memory space and has a fast search speed. The case study shows it is feasible and effective.


Loquens ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 060
Author(s):  
Elisa Pellegrino

Speech rhythm varies noticeably from language to language, and within the same language as a function of numerous linguistic, prosodic and speaker-dependent factors, among which is the speaker’s age. Cross-sectional studies comparing the acoustic characteristics of young and old voices have documented that healthy aging affects speech rhythm variability. This kind of studies, however, presents one fundamental limitation: They group together people with different life experiences, healthy conditions and aging rate. This makes it very difficult to disentangle the effect of aging from that of other factors when interpreting the rhythmic differences between younger and older adults. In the present paper, we overcame such difficulty by tracing rhythmic variability within one single individual longitudinally. We examined 5 public talks held by Noam Chomsky, from when he was 40 to when he was 89. Within-speaker rhythmic variability was quantified through a variety of rate measures (segment/consonant and vowel rate) and rhythmic metrics (%V, %Vn, nPVI-V, n-PVI-C). The results showed that physiological aging affected speech rate measures, but not the durational characteristics of vocalic and consonantal intervals. More longitudinal data from numerous speakers of the same language are necessary to identify generalizable patterns in age-related rhythmic variability.


2020 ◽  
Author(s):  
Jorge Rodríguez ◽  
Mauricio Patón ◽  
Juan M Acuña

SummaryBackgroundThe unprecedented rapid development of vaccines against the SARS-CoV-2 virus creates in itself a new challenge for governments and health authorities: the effective vaccination of large numbers of people in a short time and, possibly, with shortage of vaccine doses. To whom vaccinate first and in what sequence, if any at all, to avoid the most fatalities remains an open question.MethodsA compartmental model considering age-related groups was developed to evaluate and compare vaccine distribution strategies in terms of the total avoidable fatalities. Population groups are established based on relevant differences in mortality (due to e.g. their age) and risk-related traits (such as their behaviour and number of daily person-to-person interactions). Vaccination distribution strategies were evaluated for different vaccine effectiveness levels and population coverage in a case study for Spain.FindingsOur results unambiguously show that planning vaccination by priority groups can achieve dramatic reductions in total fatalities compared to no prioritisation. Our results also indicate that the best strategy for vaccine distributions appears to be to prioritise groups with the highest number of daily person-to-person interactions. This is due to the importance of the avoided subsequent infections inflicted on the rest of the population by those in those groups.InterpretationThese results are in direct contradiction with several published guidelines for COVID-19 vaccination and therefore highlight the importance of conducting an open comprehensive and thorough analysis of this problem leaving behind possible preconceptions.


1991 ◽  
Vol 85 (6) ◽  
pp. 249-252 ◽  
Author(s):  
L.M. Chalifoux

This article presents an overview of information on macular degeneration for professionals who help persons with the disease adjust to their visual loss. It covers the types of macular degeneration, the etiology of the disease, and current treatment. In addition, it presents a composite case study, drawn from recent research, on the psychosocial problems and other difficulties that persons with age-related macular degeneration face.


Nutrients ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1646 ◽  
Author(s):  
Francisco Javier Leyva-Jiménez ◽  
Jesús Lozano-Sánchez ◽  
María de la Luz Cádiz-Gurrea ◽  
David Arráez-Román ◽  
Antonio Segura-Carretero

Epidemiological studies have reported convincing evidence that natural dietary compounds may modify inflammation, it being an important event described in the pathophysiology of age-related infirmity. Among different dietary components, nutritional phenolics have demonstrated links to a lower risk of inflammation in the most common degenerative and chronic diseases. In this way, the healthy potential of phenolics against inflammation and the emergence of new functional ingredients have caused an enhancement of nutraceutical and functional food formulation. The present review focuses on: (a) nutritional phenolics and their effects on inflammation and (b) functional ingredients based on phenolic compounds with anti-inflammatory properties. Furthermore, the emerging interest in health-promoting products by consumers has caused an increase in the demand for functional products and nutraceuticals. Additionally, this review includes a case study of the Lippia genus, which has shown anti-inflammatory effects claiming to be a natural alternative for the management of this physiological disorder. This report is a practical tool for healthcare providers.


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