Search results for "HTI"
showing 10 items of 828 documents
A comparison of the temporal weighting of annoyance and loudness
2009
The influence of single temporal portions of a sound on global annoyance and loudness judgments was measured using perceptual weight analysis. The stimuli were 900-ms noise samples randomly changing in level every 100 ms. For loudness judgments, Pedersen and Ellermeier [J. Acoust. Soc. Am. 123, 963-972 (2008)] found that listeners attach greater weight to the beginning and ending than to the middle of a stimulus. Qualitatively similar weights were expected for annoyance. Annoyance and loudness judgments were obtained from 12 listeners in a two-interval forced-choice task. The results demonstrated a primacy effect for the temporal weighting of both annoyance and loudness. However, a signific…
On orienting the hand to reach and grasp an object.
1996
Subjects were required to reach and grasp a parallelepiped, the position, orientation and size of which were varied. The kinematics of reaching and grasping movements was studied in full vision and in no vision conditions. Both direction and movement amplitude of reaching were affected by object orientation. Conversely, both the time course of finger axis orientation and the angular displacement of the hand at wrist were influenced by object position. These results were not modified by the absence of visual control. Finger aperture during grasping was affected by both object size and orientation. This latter result was not due to a distorted size perception, as shown by a control matching e…
Sports injuries in an America's Cup yachting crew: A 4-year epidemiological study covering the 2007 challenge
2009
The aim of this study was to describe the injuries sustained by an America's Cup crew during eight preparatory competitions of the 32nd America's Cup 2007 and the Louis Vuitton Cup (from October 2004 to June 2007). The anatomical location, type of injury, and mechanism of injury were recorded. The injuries were categorized based on each sailor's position on the boat according to three intensities of physical demands. The injury rates per sailor and per 1000 h of competition were determined. In total, 90 injuries were registered. The overall incidence was 10 injuries per 1000 competition hours. Overuse injuries accounted for 76.6% of all lesions. The most common anatomical location of injuri…
Different strategies for sports injury prevention in an America's Cup yachting crew.
2009
PURPOSE:: To analyze the effectiveness in reducing the number of sport injuries after application of different strategies of preventive physiotherapy during competition periods in an America's Cup yachting crew. METHODS:: A prospective physiotherapy intervention study during competition periods for three seasons was conducted on an America's Cup yachting race crew of 30 professional sailors. In the first two acts (2004), athletes did not receive any preventive physiotherapy. In the two acts celebrated in 2005, preventive intervention (phase 1) consisted of stretching exercises before the yacht race and preventative taping. During the four acts corresponding to the 2006 season, the physiothe…
Luonto ja eläimet Eija-Liisa Ahtilan teoksessa Tänään
2014
Sivuttukielmassa käsitellään taiteilija Eija-Liisa Ahtilan kolmikanavaista videoinstallaatiota Tänään (1996–1997). Erityisesti pohditaan teoksesta avautuvia käsityksiä luonnosta ja eläimistä. Taustaksi tutkimukselle esitellään videoinstallaatioiden kehitystä taidemuotona 1990-luvun lopulla sekä erityisesti Eija-Liisa Ahtilan tapoja käyttää monikuvainstaalaatiota taiteensa välineenä. Myös Ahtiloan tuotannossa olennaiset käsitteet aika, paikka ja subjekti tulevat myös kytketyiksi tutkimukseen.