296. Implemention of an Effective Low Cost Engineering Control for an HVAC Related Noise Problem at a Pediatric Hospital

2001 ◽  
Author(s):  
R. Stephenson ◽  
B. Weinstein ◽  
C. Nenadic
2011 ◽  
Vol 110-116 ◽  
pp. 1582-1588
Author(s):  
Shahida Khatoon ◽  
Dhiraj Gupta

In order to enable a mini-UAV to perform target acquisition, localization and continuous surveillance in real world environment one must develop a technology which may be a combination of aircraft engineering, control systems, and wireless communication. The major limiting factors in developing the capabilities of small low cost UAVs are connectivity, computational processing power and lack of resource integration. To overcome these limitations in this research we have tried to assemble an experimental fixed wing prototype glider plane capable of being remotely controlled in the range of 20 meters. We started with a light and flexible fat-propylene twine flute material and developed the airframe, interfaced it with radio controlled remote and embedded on-board micro controller on the glider airframe. Our glider took stable flight with the assembled propeller for 20 minutes successfully. The brushless DC servomotors used for electronic speed control of the UAV worked efficiently and were able to control the rudder and elevator in both directions. The significance of this research is that all the devices used here are low cost and highly efficient. In this paper we have investigated the use of reconfigurable computing as a viable alternative to increase the amount of computational power whilst at the same time minimizing the amount of weight, size, and power consumption.


1996 ◽  
Vol 14 (2) ◽  
pp. 111-114 ◽  
Author(s):  
David J Lawson
Keyword(s):  
Low Cost ◽  

1996 ◽  
Vol 5 (3) ◽  
pp. 096369359600500 ◽  
Author(s):  
R. Heijenrath ◽  
T. Peijs

Natural-fibre-mat-reinforced thermoplastics (NMTs) based on flax fibres and a polypropylene (PP) matrix were manufactured using a film-stacking method. The influence of fibre content on stiffness and strength is reported and compared with data for glass-matreinforced-thermoplastics (GMTs), including the influence of improved fibre/matrix adhesion as a result of the use of maleic-anhydride grafted PP. Additionally, unidirectional and random-flax-mat composites based on epoxy resin were manufactured as reference materials. Results indicated that NMTs are of interest for low cost engineering applications, especially when a high stiffness per unit weight is desirable.


2018 ◽  
Vol 47 (3) ◽  
pp. 246-274
Author(s):  
Fanhe Meng ◽  
Bernard J. Van Wie ◽  
David B. Thiessen ◽  
Robert F. Richards

Vaccine ◽  
2020 ◽  
Vol 38 (29) ◽  
pp. 4609-4615 ◽  
Author(s):  
Ioannis Kopsidas ◽  
Grammatiki-Christina Tsopela ◽  
Stefania Maroudi-Manta ◽  
Eleni Kourkouni ◽  
Dimitrios Charalampopoulos ◽  
...  

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