Results 21 to 30 of about 129,657 (313)
Parabolic pulse generation through passive reshaping of Gaussian pulses in a normally dispersive fiber [PDF]
, 2007 We numerically and experimentally demonstrate that a Gaussian pulse can be reshaped into a pulse with a stable parabolic intensity profile during propagation in normally dispersive nonlinear ...
David J. Richardson +9 more
core +1 more source
Dizhen xuebao, 2020 基于美国NGA数据库，在断层投影距小于25 km范围内挑选了1387条地震加速度记录，分别按照断层距和场地条件进行分组，对近断层速度脉冲型地震动的频谱特性、特征周期，及其与断层距、震级的相关性予以分析。结果显示：① 出现速度脉冲型地震动的比例与断层投影距之间存在明显的线性相关关系，但其与震级的变化不相关；② 地震动速度脉冲周期与震级之间存在强相关；③ 对于近断层速度脉冲型地震动，采用动态变化的加速度和速度反应谱峰值周期进行特征周期的计算，更加符合真实情况；④ 地震动速度脉冲有放大地震动特征周期的作用 ...
Ruifang Yu +4 more
doaj +1 more source
, 2022 openLa grande incidenza delle malattie cardiovascolari nel mondo spinge alla ricerca di nuove soluzioni che permettano di individuare precocemente i processi patologici e forniscano una diagnosi più precisa basata su valutazioni multiparametriche.
ROSSI, BEATRICE
core
Electromagnetic modelling of a monolithic pulse reshaper based on a photonic crystal waveguide integrated with a SOA [PDF]
, 2006 Finite difference time domain (FDTD) and finite element (FE) frequency domain methods are used to study the propagation of arbitrary chirped pulses in photonic crystal (PhC) waveguide.
M. Cryan +29 more
core +1 more source
Analytical Aspects of Velocity Pulses on Seismic Behaviour of Mid-Rise Compound Skeleton of Steel Moment Frame and Eccentrically Braced Panels [PDF]
Journal of Structural and Construction Engineering, 2019 Steel moment frame and bracing panels compound structures are suitable systems for medium-height resistant skeletons due to their desirable ductility along with high rigidity when facing large dynamic forces caused by earthquakes.
Parsa Khazaei Rad +2 more
doaj +1 more source
Review of the identification of near-fault velocity pulse-like strong ground motions
地球与行星物理论评, 2023 Strong pulse-like ground motions have caused extensive damage to many engineering structures and are one of the main factors influencing earthquake damage in near-fault regions.
Xiaofen Zhao, Zengping Wen
doaj +1 more source
Assessment of pulse wave velocity
Artery Research, 2008 Measurement of pulse wave velocity is of increasing importance for assessment of arterial stiffness and risk evaluation. Different techniques are available, based either on pressure, distension or Doppler waveforms.
Pierre Boutouyrie +4 more
doaj +1 more source
Biomedicines, 2021 Primary aldosteronism (PA) is associated with higher arterial stiffness compared to essential hypertension (EH). However, few studies have compared different pulse wave velocity (PWV) parameters to detect aldosterone-induced arterial stiffness.
Zheng-Wei Chen +13 more
doaj +1 more source
Pulse wave velocity in the carotid artery [PDF]
2008 IEEE Ultrasonics Symposium, 2008 The pulse wave velocity (PWV) in the carotid artery (CA) has been estimated based on ultrasound data collected by the experimental scanner RASMUS at DTU. Data is collected from one test subject using a frame rate (FR) of 4000 Hz. The influence of FRs is also investigated.
Sørensen, Gertrud Laura +4 more
openaire +2 more sources
Applied Sciences, 2020 This paper presents the results of shake table tests of a scaled long span cable-stayed bridge (CSB). The design principles of the scaled CSB are first introduced. The first six in-plane modes are then identified by the stochastic subspace identification
Chao Zhang +6 more
doaj +1 more source