id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-968	Švec, P.; Jandák, V.	The Influence of PZT Actuators Positioning in Active Structural Acoustic Control	2007	4	.pdf	application/pdf	2364	118	62	[1] for the clamped sides (at x � 0 and x a� ) � � � � 2 2 3 30 0 u x u x � �, (4) and for the free sides (at y � 0 and y � b) The total power � radiated by a planar source, e.g., a vi- brating panel, is proportional to the normal velocity of its sur- face, and can be expressed as �( ) ( , ) � � � � � � � � � �� � �� � ��0 0 2 2 2 2 28 c k V k k k k k k k z x y x y x yd d � � � � , (1) where k is the wave number vector magnitude, kx, ky are its components in the x and y directions, �0 and c0 are air density and phase speed of sound respectively, Vz is the 2D k-space Fourier transform of the normal velocity of the vibrating surface, and � ( ) means the real part of its argument.	cache/ap-968.pdf	txt/ap-968.txt