The fundamental frequencies and mode shapes of steel and carbon fiber–reinforced plastic (CFRP) cylindrical shells with steel inserts were investigated using finite element analysis and modal testing. The free-free boundary condition was tested with modal testing using the roving hammer method and verified by finite element analysis using ABAQUS. The results show good agreement between the test...

Voices can be characterized by their fundamental frequency as well as by speech timbre characteristics, such as formant frequencies. While infants’ responses to fundamental frequency characteristics are well established, very little is known about how infants respond to changes in formant frequencies. This study tested whether 6-month-old infants prefer listening to speech with raised formant f...

Dosulepin and doxepin are tricyclic antidepressants. The molecular geometries, harmonic vibrational frequencies, quantum chemical parameters and thermodynamic properties of dosulepin and doxepin were calculated by Generalized Gradient Approximation methods developed by Perdew and Wang (GGA-PW91) and Becke-Lee-Yang-Parr (GGA-BLYP) in the gas phase and solution media. The local reactivity of thes...

Spiros Alexakis, Markus Bauer, Albina Pace, Alexa Schumacher CAS Software AG, Wilhelm-Schickard-Str. 10-12, 76131 Karlsruhe, GERMANY [email protected] [email protected] [email protected] [email protected] Andreas Friesen SAP Research, CEC Karlsruhe, Vincenz-Prießnitz-Str. 1, 76131 Karlsruhe, GERMANY [email protected] Athanassios Bouras Institute of Communication and Computer...

Gabor filters are a widely used feature extraction method in image analysis. In this study, a new method is presented that utilises Gabor filters for extracting fundamental frequencies of objects. The fundamental frequencies represent the shape of an object and can be used to classify objects with dissimilar spatial dimensions. Theoretical results are verified by experiments with real images of...

Received 9 September 2007; in final form 20 December 2007 Abstract The fundamental frequencies and the mean values of the internal coordinates are extracted from the trajectories of classical dynamics based on the relation between the classical and the quantum mechanical frequencies using quasi-classical direct ab initio molecular dynamics, where the oscillator amplitude is specified by setting...