An Alternative to EPA Method 9: Field Validation of a Digital Opacity Compliance System (DOCS)

2004 ◽  
Author(s):  
Michael J. Calidonna ◽  
Paul E. Kerch ◽  
Daniel A. Stone ◽  
Michael J. McFarland ◽  
Tomas J. Logan ◽  
...  
Keyword(s):  
Field Validation

scholarly journals Field Validation of Wake Steering Control with Wind Direction Variability

2020 ◽  
Vol 1452 ◽  
pp. 012012 ◽  
Author(s):  
Eric Simley ◽  
Paul Fleming ◽  
Jennifer King
Keyword(s):  
Wind Direction ◽  
Steering Control ◽  
Field Validation

Field Validation of Supercritical CO2 Reactivity with Basalts

2016 ◽  
Vol 4 (1) ◽  
pp. 6-10 ◽  
Author(s):  
B. Peter McGrail ◽  
Herbert T. Schaef ◽  
Frank A. Spane ◽  
John B. Cliff ◽  
Odeta Qafoku ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Co2 Reactivity ◽  
Field Validation

scholarly journals Design of Mechanism and Preliminary Field Validation of Low-Cost Transfemoral Rotator for Use in the Developing World

2016 ◽  
Author(s):  
Matthew L. Cavuto ◽  
Matthew Chun ◽  
Nora Kelsall ◽  
Karl Baranov ◽  
Keriann Durgin ◽  
...  
Keyword(s):  
Developing World ◽  
Low Cost ◽  
Field Studies ◽  
Field Validation ◽  
User Testing ◽  
Common Solution ◽  
Locking Mechanism ◽  
Medial Rotation ◽  
Transfemoral Amputees ◽  
And Function

Transfemoral (above-knee) amputees face a unique and challenging set of restrictions to movement and function. Most notably, they are unable to medially rotate their lower-leg and subsequently cross their legs. The best and most common solution to this issue today is a transfemoral rotator, which allows medial rotation of the leg distal to the knee through a lockable turntable mechanism. However, currently available transfemoral rotators can cost thousands of dollars, and few equivalent technologies exist in the developing world. This paper, supported by the results of field studies and user testing, establishes a framework for the design of a low-cost and easily manufacturable transfemoral rotator for use in the developing world. Two prototypes are presented, each with a unique internal locking mechanism and form. A preliminary field study was conducted on six transfemoral amputees in India and qualitative user and prosthetist feedback was collected. Both prototypes successfully allowed all subjects to complete tasks such as crossing legs, putting on pants, and tying shoes while maintaining functionality of walking and standing. Future iterations of the mechanism will be guided by a combination of the most positively received features of the prototypes and general feedback suggestions from the users.

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