Change in seating position of children in towaway crashes from 1989 to 2019

2021 ◽  
Vol 159 ◽  
pp. 106280
Author(s):  
David C. Viano ◽  
Chantal S. Parenteau
Keyword(s):  
2020 ◽  
Vol 1 ◽  
pp. 2485-2494
Author(s):  
S. W. Eikevåg ◽  
A. Kvam ◽  
M. K. Bjølseth ◽  
J. F. Erichsen ◽  
M. Steinert

AbstractWhen designing high performance sports equipment for Paralympic athletes, there are many unknowns for the design engineer to consider. The design challenge is an optimisation task per individual athlete. However, modelling this optimisation is difficult due to the many variables. This article presents the design of an experiment for identifying and evaluating various seating positions in Paralympic rowing by using a rowing ergometer with a modified seat. Results indicate that changing seating position has a substantial impact on per-athlete rowing performance.


1938 ◽  
Vol 18 (2) ◽  
pp. 423-427 ◽  
Author(s):  
F. Nowell Jones ◽  
Joseph B. Cooper

PEDIATRICS ◽  
1969 ◽  
Vol 44 (5) ◽  
pp. 847-854
Author(s):  
G. Anthony Ryan

The part that children play in traffic accidents has been studied by numerous workers from differing points of view. Slätis,1 in a study of 5,291 persons injured in traffic accidents and receiving medical treatment in Sweden, found that 16.3% were less than 15 years of age. An examination by Mackay2 of a series of 250 accidents investigated at the scene in Birmingham, England, found that children less than 16 years of age formed 6.2% of the 464 persons involved. In Brisbane, Australia, Jamieson and Tait3 found that children less than 15 years old formed 10.9% of a group of 1,000 admissions or deaths from traffic accidents. Gädeke4 in Germany, found children less than 15 years old were injured more often in rural accidents, that traffic accidents formed 35 to 40% of all fatal accidents in children, and that injuries to the head and lower limb were most common. In Sweden, Ekström, et al.5 found that the majority of children involved in accidents they studied were pedestrians or pedal cyclists, and 40% were between 5 and 9 years old. Moore and Lilienfeld6 reported on 31,001 occupants of known age in 14,520 automobiles involved in injury-producing accidents on rural highways in the United States. They found that children less than 12 years of age formed 9%, adolescents age 12 to 18 years formed 16%, and adults of more than 18 years formed 75%. They found that children received fewer and less severe injuries than adolescents or adults, in each seating position. Front seat passengers in each age group were injured more often and more severely than rear seat passengers.


2020 ◽  
Vol 10 (6) ◽  
Author(s):  
Liping Liu ◽  
Weinan Ju ◽  
Hongwei Liu
Keyword(s):  

2013 ◽  
Vol 372 ◽  
pp. 657-660 ◽  
Author(s):  
Chee Fai Tan ◽  
Wei Chen ◽  
G.W. Matthias Rauterberg

Travel by air with long hours will create discomfort feeling for aircraft passenger especially economy class aircraft passenger. Long hour air travel will create physiological stress on aircraft passenger. It may due to seat space limitation, noise, vibration, cabin humidity as well as seat comfort. Seat comfort is a subjective feeling that related to psychological aspect of aircraft passenger. The current aircraft passenger seat is equipped with a passive function where the passenger themselves needs to adjust the seat for comfort seating position. The aircraft passenger will not able to adjust the seat when the aircraft passenger is in the low activity condition. The active seat support system was developed to support the aircraft passenger actively. The first prototype of active seat support system is focus on neck section. The head position of the aircraft seat was embedded with the system to detect the head position of the passenger. During the development of the active seat support system, total design technique was used. Five conceptual designs were generated for selection. To determine the final design of active neck support system, the matrix evaluation method was used. The weight of the concept was obtained through weight analysis.


2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Nobunaga Okada ◽  
Tasuku Matsuyama ◽  
Kotaro Takebe ◽  
Tetsuhisa Kitamura ◽  
Junya Sado ◽  
...  

2017 ◽  
Vol 2 (2) ◽  
pp. 97-104 ◽  
Author(s):  
Cas D.P. van’t Hullenaar ◽  
Ben Hermans ◽  
Ivo A.M.J. Broeders

AbstractBackground:Robot-assisted surgery is considered to improve ergonomics over standard endoscopic surgery. Nevertheless, previous research demonstrated ergonomic deficits in the current console set-up.Aim:This study was designed to objectively assess body posture in the da Vinci console during robot-assisted endoscopic surgery.Methods:Multiple sagittal photographs from six physicians were taken during robot-assisted procedures. Trunk, neck, shoulder, elbow, hip, and knee angles were calculated and compared to ergonomic preferable joint angles. A 2D geometric model was developed using individual anthropometrics. Optimal seat height, armrest height, and viewer height were calculated. These results were compared to the findings of the sagittal photographs.Results:Mean joint angles show potentially harmful neck angles for all participants. Trunk angles vary between surgeons, from inadequate to correct. In short and very tall individuals, optimal armrest height is outside the adjustment range of the console.Conclusion:The da Vinci Surgical System console seating position results in a nonergonomic neck and trunk angle. The developed geometric model revealed that armrest height has a limited adjustment range. Adjustments to the console and optimization of preoperative settings are goals to further improve ergonomics in robot-assisted surgery.


JAMA ◽  
1997 ◽  
Vol 278 (17) ◽  
pp. 1418-1425 ◽  
Author(s):  
J. D. Graham

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