The Experts below are selected from a list of 10305 Experts worldwide ranked by ideXlab platform
Paavo V. Komi - One of the best experts on this subject based on the ideXlab platform.
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Takeoff analysis of a champion ski Jumper
Journal of Biomechanics, 1994Co-Authors: Mikko Virmavirta, Paavo V. KomiAbstract:The takeoff technique of the all time best ski Jumper M. Nykiinen\n(MN) was analyzed \n\nby comparing his takeoff performance with the other Jumpers in plastic\nski jumping \n\ncompetition. The continuously accelerative movement toward the takeoff\nedge seemed to \n\nbe the major advantage of MN revealed from the recorded takeoff force\ncurve. The high \n\nforce production of MN at the end of the takeoff gave him a high vertical\nas well as \n\nhorizontal velocity at the release instant from the takeoff table.\nBy keeping his \n\nshank from moving too much backwards during the takeoff MN could move\nhis upper body \n\nforward and thus get a proper flight position. The different variables\nmeasured in \n\nthis study showed that the superiority of the takeoff of MN was not\ndue to only one \n\nor two attributes, but it was a sum of many takeoff factors which\ninfluence the ski \n\njumping performance.
Mikko Virmavirta - One of the best experts on this subject based on the ideXlab platform.
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Takeoff analysis of a champion ski Jumper
Journal of Biomechanics, 1994Co-Authors: Mikko Virmavirta, Paavo V. KomiAbstract:The takeoff technique of the all time best ski Jumper M. Nykiinen\n(MN) was analyzed \n\nby comparing his takeoff performance with the other Jumpers in plastic\nski jumping \n\ncompetition. The continuously accelerative movement toward the takeoff\nedge seemed to \n\nbe the major advantage of MN revealed from the recorded takeoff force\ncurve. The high \n\nforce production of MN at the end of the takeoff gave him a high vertical\nas well as \n\nhorizontal velocity at the release instant from the takeoff table.\nBy keeping his \n\nshank from moving too much backwards during the takeoff MN could move\nhis upper body \n\nforward and thus get a proper flight position. The different variables\nmeasured in \n\nthis study showed that the superiority of the takeoff of MN was not\ndue to only one \n\nor two attributes, but it was a sum of many takeoff factors which\ninfluence the ski \n\njumping performance.
Guangwei Zhou - One of the best experts on this subject based on the ideXlab platform.
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performance of transit signal priority with queue Jumper lanes
Transportation Research Record, 2005Co-Authors: Guangwei ZhouAbstract:Queue Jumper lanes are a special type of bus preferential treatment that allows buses to bypass a waiting queue through a right-turn bay and then cut out in front of the queue by getting an early green signal. The performance of queue Jumper lanes is evaluated under different transit signal priority (TSP) strategies, traffic volumes, bus volumes, dwell times, and bus stop and detector locations. Four TSP strategies are considered: green extension, red truncation, phase skip, and phase insertion. It was found that queue Jumper lanes without TSP were ineffective in reducing bus delay. Queue Jumper lanes with TSP strategies that include a phase insertion were found to be more effective in reducing bus delay while also improving general vehicle operations than those strategies that do not include this treatment. Nearside bus stops upstream of check-in detectors were preferred for Jumper TSP over far-side bus stops and nearside bus stops downstream of check-in detectors. Through vehicles on the bus approach we...
David A Covell - One of the best experts on this subject based on the ideXlab platform.
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a cephalometric study of class ii division 1 malocclusions treated with the jasper Jumper appliance
Angle Orthodontist, 2009Co-Authors: David A Covell, Dennis W Trammell, Roger P Boero, Richard WestAbstract:Abstract This lateral cephalometric study investigated the dental and skeletal effects of the Jasper Jumper appliance used in the correction of Class II Division 1 malocclusions. A sample of 36 growing patients treated with the Jasper Jumper appliance was divided into two groups: (1) 24 patients with records obtained at the start and completion of orthodontic treatment, and (2) 12 patients with records available at the beginning and end of the Jumper phase of treatment. Treatment effects were determined by statistical comparisons of cephalometric changes in the patients relative to age-adjusted cephalometric standards, and from structural superimpositions. While the Jumpers were in place, maxillary incisors were retroclined and the molars were moved distally, tipped back, and intruded. The mandibular incisors were proclined and intruded, while the molars were translated mesially, tipped forward, and extruded. Skeletal measures showed reduced forward maxillary displacement and no significant alteration of ...
Richard West - One of the best experts on this subject based on the ideXlab platform.
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a cephalometric study of class ii division 1 malocclusions treated with the jasper Jumper appliance
Angle Orthodontist, 2009Co-Authors: David A Covell, Dennis W Trammell, Roger P Boero, Richard WestAbstract:Abstract This lateral cephalometric study investigated the dental and skeletal effects of the Jasper Jumper appliance used in the correction of Class II Division 1 malocclusions. A sample of 36 growing patients treated with the Jasper Jumper appliance was divided into two groups: (1) 24 patients with records obtained at the start and completion of orthodontic treatment, and (2) 12 patients with records available at the beginning and end of the Jumper phase of treatment. Treatment effects were determined by statistical comparisons of cephalometric changes in the patients relative to age-adjusted cephalometric standards, and from structural superimpositions. While the Jumpers were in place, maxillary incisors were retroclined and the molars were moved distally, tipped back, and intruded. The mandibular incisors were proclined and intruded, while the molars were translated mesially, tipped forward, and extruded. Skeletal measures showed reduced forward maxillary displacement and no significant alteration of ...
