We present a highly detailed study of calving dynamics at Tunabreen, a tidewater glacier in Svalbard. A time-lapse camera was trained on the terminus and programmed to capture images every 3 seconds over a 28-hour period in August 2015, producing a highly detailed record of 34 117 images from which 358 individual calving events were distinguished. Calving activity is characterised by frequent events (12.8 events h−1) that are small relative to the spectrum of calving events observed, demonstrating the prevalence of small-scale calving mechanisms. Five calving styles were observed, with a high proportion of calving events (82%) originating at, or above, the waterline. The tidal cycle plays a key role in the timing of calving events, with 68% occurring on the falling limb of the tide. Calving activity is concentrated where meltwater plumes surface at the glacier front, and a ~ 5 m undercut at the base of the glacier suggests that meltwater plumes encourage melt-under-cutting. We conclude that frontal ablation at Tunabreen may be paced by submarine melt rates, as suggested from similar observations at glaciers in Svalbard and Alaska. Using submarine melt rate to calculate frontal ablation would greatly simplify estimations of tidewater glacier losses in prognostic models.

In Western countries, an increasing number of companies has difficulties with recruiting and retaining employees, along with growing employer responsibilities in the workplace. Therefore, companies’ interest in disability management programs has increased. This article examines employee perspectives of disability management and how it is related to job satisfaction, physical and mental health, workplace morale and sickness absence. Employees from seven Swiss companies (N=482), from the private and public sector, participated in either an online and paper-and-pencil survey for this present study. The survey asked employees to report their views of how disability management is related to job satisfaction, mental health, physical health, workplace morale and absenteeism. The Swiss employees participating in the study knew about disability management and related programs, which are implemented in their company. They valued them as moderately helpful for a variety of factors related to workplace wellbeing, and regarded the programs generally as high quality and wanted them to continue, because they contribute to job satisfaction, mental health, physical health, workplace morale and reduced sickness absence. However, employees also saw more value in disability prevention (DP) and stay at work (SAW) programs than in return to work (RTW) programs. Male employees and those working for public organisations saw more benefit in disability management programs than female employees and those working in the private sector.

A Canadian sample was collected as an aspect of a large international project, with representation from Australia, Canada, China, and Switzerland. In each country, interview and survey data were collected using team-created research tools. Canadian survey data on disability management (DM) perceptions were collected from 218 employees in both public and private organisations. Our Canadian employee sample reported perceived influence of disability prevention on job satisfaction, physical health, mental health, and morale for both themselves and their coworkers. Return to work programs were seen as valuable for job satisfaction of both the employee and coworkers, as well as the physical health of coworkers. Similarly, stay at work programs were seen as valuable for mental health and morale of coworkers. There was no relationship between perceived influence of DM interventions and reduction of sickness absence. The influence of DM was perceived as more positive for private and/or nonunionised workplaces. No gender differences were evident.

Disability management is now recognised as an effective means of managing the increasing global costs of injury and disability. However, research on disability management particularly employee perceptions of its value, are sparse. This paper reports on the Australian findings of a large international project that included Canada, China, Switzerland and Australia, which examined employee perspectives of disability management related to job satisfaction, physical and mental health, workplace morale and reduced sickness absence. Data was collected from 365 employees in 10 large private and public companies using an online survey tool that focused on three components of a disability management program — disability prevention (DP), stay at work (SAW) and return to work (RTW) programs — in relation to the dependent variables of job satisfaction, physical and mental health, workplace morale, sickness absence. Multivariate regression was used to predict disability management's influence on the dependent variables. Results demonstrated positive perceptions regarding the perceived benefits of disability management to both individual employees and their perceptions of coworkers. It was apparent that each component of a disability management program (DP, SAW, and RTW) is positively related to job satisfaction, physical and mental health, workplace morale and reduced sickness absence Disability management programs were perceived as more beneficial in private, as opposed to public, workplaces; however, no differences were evident according to union status or gender of the respondent. It is possible disability management may impact on organisational productivity via variables associated with workplace culture, as well as through the direct benefits flowing from preventing and managing injury. Given the significant costs associated with absenteeism, an outcome of interest to many employers was the finding that employees perceived SAW programs as the most beneficial in terms of reducing absenteeism for both themselves and their coworkers.

Heart rate (HR) variability and large arterial compliance can be improved using fish oils. DHA, a component of fish oil, has cardiovascular health benefits, but its effect on HR variability (HRV) and arterial compliance is yet to be quantified. Sixty-seven overweight or obese adults (thirty-six males and thirty-one females; 53 (sem 2) year; BMI 31·7 (sem 1·1) kg/m2) were randomly allocated to consume either 6 g/d sunola oil (control; n 17), fish oil (260 mg DHA+60 mg EPA per g) at doses of 2 g/d (n 16), 4 g/d (n 17) or 6 g/d (n 17). Blood pressure, HR and compliance of large and small arteries were measured while supine at baseline and after 12 weeks in all participants, and HRV was assessed in a subgroup of forty-six participants. There was no effect of fish oil on blood pressure, small artery compliance or HR. However, the low frequency:high frequency ratio of HRV decreased with increasing doses of fish oil (r − 0·34, P = 0·02), while large artery compliance increased (r 0·34, P = 0·006). Moreover, the changes in these biomarkers were significantly correlated (r − 0·31, P = 0·04) and may reflect fish oil-induced improvements in arterial function and cardiac autonomic regulation.

In failing to abide by the chief rule of their genre, the Enigmata of Aldhelm have themselves become something of a riddle: for why should their author give, in the form of a title word or phrase, the solution to each of the one hundred riddles? By violating from the start the essential quality of any riddle – a seeming impossibility of solution – Aldhelm would seem to neglect the point made in this Swedish riddle about riddles: ‘When one does not know what it is, then it is something; but when one does know what it is, then it is nothing.’ Certainly the work of Symphosius provided Aldhelm with a precedent for including solutions to his riddles; but this fact in itself does not explain very much about Aldhelm's practice, for it ignores the pleasure he took in exploring the possibilities of the riddle as a genre. Since his work as a whole demonstrates a taste for the difficult and esoteric, it is not surprising that his Enigmata should pose this riddle of their own. His practice in this regard is all the more intriguing because very few of the enigmata are difficult to solve, even without their titles. They differ quite markedly from the riddles of the Exeter Book, many of which are insoluble. In the paradoxical fashion so beloved of riddlers, the mystery of the enigma is also the important clue. That is, the title word or phrase offers in the obvious sense a solution; but in a more esoteric, linguistic sense it may also present a riddle of its own.