http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Automatic heart activity diagnosis based on Gram polynomials and probabilistic neural networks
Francesco Beritelli,Giacomo Capizzi,Grazia Lo Sciuto,Christian Napoli,Francesco Scaglione 대한의용생체공학회 2018 Biomedical Engineering Letters (BMEL) Vol.8 No.1
The paper proposes a new approach to heartactivity diagnosis based on Gram polynomials and probabilisticneural networks (PNN). Heart disease recognition isbased on the analysis of phonocardiogram (PCG) digitalsequences. The PNN provides a powerful tool for properclassification of the input data set. The novelty of theproposed approach lies in a powerful feature extractionbased on Gram polynomials and the Fourier transform. Theproposed system presents good performance obtainingoverall sensitivity of 93%, specificity of 91% and accuracyof 94%, using a public database of over 3000 heart beatsound recordings, classified as normal and abnormal heartsounds. Thus, it can be concluded that Gram polynomialsand PNN prove to be a very efficient technique using thePCG signal for characterizing heart diseases.
Analytic study of a new conceptual propulsion device for ships
Muscia, Roberto,Sciuto, Giacomo The Society of Naval Architects of Korea 2010 International Journal of Naval Architecture and Oc Vol.2 No.2
In this work the possibility of obtaining a rectilinear motion of bodies partially or totally submerged without using propellers is evaluated. The system propulsion is based on a pair of counter rotating masses that generate the thrust. The fluid-body system has been schematized in order to carry out a very simple model. Using this model an evaluation of the body motion along a longitudinal direction was performed. The motion equations of the system were written and integrated. The external forces applied to the body depend on its velocity in relation to the water. These forces were obtained by fluid dynamic simulations. Regarding the mechanical configuration suggested, the results obtained show that a certain displacement of the body along a fixed direction is obtainable.
Analytic study of a new conceptual propulsion device for ships
Roberto Muscia,Giacomo Sciuto 대한조선학회 2010 International Journal of Naval Architecture and Oc Vol.2 No.2
In this work the possibility of obtaining a rectilinear motion of bodies partially or totally submerged without using propellers is evaluated. The system propulsion is based on a pair of counter rotating masses that generate the thrust. The fluid-body system has been schematized in order to carry out a very simple model. Using this model an evaluation of the body motion along a longitudinal direction was performed. The motion equations of the system were written and integrated. The external forces applied to the body depend on its velocity in relation to the water. These forces were obtained by fluid dynamic simulations. Regarding the mechanical configuration suggested, the results obtained show that a certain displacement of the body along a fixed direction is obtainable.