In evaluating the quality of waveform energy, Total Harmonic Distortion can be one of the unique testing parameters showing the disturbance effect on pure waveform or regenerated waveform. As harmonics may added to distort the fundamental waveform, the analysis of signal dynamic characteristic and the measurement of harmonics effect on the integrity of the waveform will be study to explore and ...

COVID-19患者では，凝固異常が合併しやすいことが知られている．私たちは，ACL-TOP 700 hemostasis testing systemにて，APTT凝固波形解析をしたところ，COVID-19患者では，高率に凝固波形パターン異常がみられることを経験した．その後の報告をみると，当該測定系以外の測定系では，このような波形パターン異常は報告されておらず，測定系特異的な現象と考えられる．一方で，凝固塊の形成速度，加速度を示す指標は，調べた範囲のすべての測定系で上昇しており，COVID-19での凝固異常をAPTT凝固波形解析は反映していると考えられる．その機序としては，現在のところ特定できていないが，凝固波形パターン異常を示す検体では，特にフィブリノゲンが高値を示していた．その他，ループスアンチコアグラント，VWF/ADAMTS13，血中脂質の変動などが要因として考えられる．一...

that is, #Uq = φ(q), the Euler function. For n ∈ Uq we use n to denote the modular inverse of n, that is, nn ≡ 1 (mod q), n ∈ Uq. The classical question of D. H. Lehmer (see [9, Problem F12]) about the joint distribution of the parity of n and n has been solved by W. Zhang [19, 20]. Recently this question has been generalised by E. Alkan, F. Stan and A. Zaharescu [1] as follows. Given vector a ...

Advances in speech coding technologies have enabled speech coders to achieve bit-rate reductions at a great extent while maintaining roughly the same speech quality. One of the most important driving forces behind this feat is the analysis-by-synthesis paradigm. Code Excited Linear Predictive coder (CELP) is the quite efficient closed loop analysis-by-synthesis method for narrow and medium band...