Parachute use to prevent death and major trauma when jumping from aircraft: randomized controlled trial
Objective To determine if using a parachute prevents death or major traumatic injury when jumping from an aircraft.Design Randomized controlled trial.Setting Private or commercial aircraft between September 2017 and August 2018.Participants 92 aircraft passengers aged 18 and over were screened for participation. 23 agreed to be enrolled and were randomized.Intervention Jumping from an aircraft (airplane or helicopter) with a parachute versus an empty backpack (unblinded).Main outcome measures Composite of death or major traumatic injury (defined by an Injury Severity Score over 15) upon impact with the ground measured immediately after landing.Results Parachute use did not significantly reduce death or major injury (0% for parachute v 0% for control; P0.9). This finding was consistent across multiple subgroups. Compared with individuals screened but not enrolled, participants included in the study were on aircraft at significantly lower altitude (mean of 0.6 m for participants v mean of 9146 m for non-participants; P0.001) and lower velocity (mean of 0 km/h v mean of 800 km/h; P0.001).Conclusions Parachute use did not reduce death or major traumatic injury when jumping from aircraft in the first randomized evaluation of this intervention. However, the trial was only able to enroll participants on small stationary aircraft on the ground, suggesting cautious extrapolation to high altitude jumps. When beliefs regarding the effectiveness of an intervention exist in the community, randomized trials might selectively enroll individuals with a lower perceived likelihood of benefit, thus diminishing the applicability of the results to clinical practice.
I wrote A Modern CSS Reset almost 4 years ago and, yeh, it’s not aged overly well. I spotted it being linked up again a few days ago and thought it’s probably a good idea to publish an updated version. I know I also have a terrible record with open source maintenance, so I thought […]
Finding the Right Platform: A Crosswalk of Academy-Owned and Open-Source Digital Publishing Platforms
A key responsibility for many library publishers is to collaborate with authors to determine the best mechanisms for sharing and publishing research. Librarians are often asked to assist with a wide range of research outputs and publication types, including eBooks, digital humanities (DH) projects, scholarly journals, archival and thematic collections, and community projects. These projects can exist on a variety of platforms both for profit and academy owned. Additionally, over the past decade, more and more academy owned platforms have been created to support both library publishing programs. Library publishers who wish to emphasize open access and open-source publishing can feel overwhelmed by the proliferation of available academy-owned or -affiliated publishing platforms.
For many of these platforms, documentation exists but can be difficult to locate and interpret. While experienced users can usually find and evaluate the available resources for a particular platform, this kind of documentation is often less useful to authors and librarians who are just starting a new publishing project and want to determine if a given platform will work for them.
Because of the challenges involved in identifying and evaluating the various platforms, we created this comparative crosswalk to help library publishers (and potentially authors) determine which platforms are right for their services and authors’ needs.
FYI, when a website erases your text that you just spent an hour writing, you can use this little trick to recover it 99% of the time: 1. find the firefox pid $ pgrep -l firefox 2. attach gdb to firefox and dump its core $ sudo gdb gcore firefox.dump quit 3. find your lost text in the coredump $ strings firefox.dump | grep "a unique word/sentence from ur text" i just did this today to recover a long post i wrote, and figured i'd show others!! :uxn:
This 1982 cult classic juxtaposes Cold War history, propaganda, music and culture, seamlessly crafted from government-produced educational and training films, newsreels and advertisements. The Atomic Cafe is an absurdist blast from the past that would be downright laughable if it weren’t so eerily relevant to our fake news present.
#movie #movies #film #documentary #nuclearwar #coldwar #oppenheimer #fatman #littleboy #atomicbomb #atombomb #wwii #nuclear #nuclearwinter #oppenheimermovie