394 research outputs found
Study of fault-tolerant software technology
Presented is an overview of the current state of the art of fault-tolerant software and an analysis of quantitative techniques and models developed to assess its impact. It examines research efforts as well as experience gained from commercial application of these techniques. The paper also addresses the computer architecture and design implications on hardware, operating systems and programming languages (including Ada) of using fault-tolerant software in real-time aerospace applications. It concludes that fault-tolerant software has progressed beyond the pure research state. The paper also finds that, although not perfectly matched, newer architectural and language capabilities provide many of the notations and functions needed to effectively and efficiently implement software fault-tolerance
PMS4 Comparing the Efficacy and Safety of Biologics for the Treatment of Rheumatoid Arthritis Patients: A Network Meta-Analysis
Return to play management after concussion in football: recommendations for team physicians
EvaluaciĂłn del control de Rhipicephalus (Boophilus) microplus in vivo con Metarhizium anisopliae y extracto de Annona muricata.
CE2 Determining Comparative Effectiveness Benchmarks for Emerging Treatments for Hepatitis C Virus (Hcv) Infection in the Single Arm Study Design Setting
No acute changes in postural control after soccer heading
Background: Soccer heading has been proposed as a potential cause of cerebral dysfunction
Dietary interventions modify the gut microbiota during pregnancy in patients with gestational diabetes mellitus (GDM)
The Concussion Recognition Tool 5th Edition (CRT5): Background and rationale
The Concussion Recognition Tool 5 (CRT5) is the most recent revision of the Pocket Sport Concussion Assessment Tool 2 that was initially introduced by the Concussion in Sport Group in 2005. The CRT5 is designed to assist non-medically trained individuals to recognise the signs and symptoms of possible sport-related concussion and provides guidance for removing an athlete from play/sport and to seek medical attention. This paper presents the development of the CRT5 and highlights the differences between the CRT5 and prior versions of the instrument
Earliest evidence of dental caries manipulation in the Late Upper Palaeolithic
Prehistoric dental treatments were extremely rare, and the few documented cases are known from
the Neolithic, when the adoption of early farming culture caused an increase of carious lesions. Here
we report the earliest evidence of dental caries intervention on a Late Upper Palaeolithic modern
human specimen (Villabruna) from a burial in Northern Italy. Using Scanning Electron Microscopy
we show the presence of striations deriving from the manipulation of a large occlusal carious cavity
of the lower right third molar. The striations have a “V”-shaped transverse section and several
parallel micro-scratches at their base, as typically displayed by cutmarks on teeth. Based on in
vitro experimental replication and a complete functional reconstruction of the Villabruna dental
arches, we confirm that the identified striations and the associated extensive enamel chipping on
the mesial wall of the cavity were produced ante-mortem by pointed flint tools during scratching
and levering activities. The Villabruna specimen is therefore the oldest known evidence of dental
caries intervention, suggesting at least some knowledge of disease treatment well before the
Neolithic. This study suggests that primitive forms of carious treatment in human evolution entail an
adaptation of the well-known toothpicking for levering and scratching rather than drilling practices
- …