Prediction of Internal Defect Area in Wooden Components by Stress Wave Velocity Analysis

Stress wave velocity patterns in the longitudinal-radial plane of trees for defect diagnosis

analysis of power in the network society

اندیشمندان و صاحب نظران علوم اجتماعی بر این باورند که مرحله تازه ای در تاریخ جوامع بشری اغاز شده است. ویژگیهای این جامعه نو را می توان پدیده هایی از جمله اقتصاد اطلاعاتی جهانی ، هندسه متغیر شبکه ای، فرهنگ مجاز واقعی ، توسعه حیرت انگیز فناوری های دیجیتال، خدمات پیوسته و نیز فشردگی زمان و مکان برشمرد. از سوی دیگر قدرت به عنوان موضوع اصلی علم سیاست جایگاه مهمی در روابط انسانی دارد، قدرت و بازتولید...

prediction of ignition delay period in d.i diesel engines

a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

Age-Specific Determinants of Pulse Wave Velocity among Metabolic Syndrome Components, Inflammatory Markers, and Oxidative Stress

AIM Pulse wave velocity (PWV) is thought to have different relationships with metabolic syndrome (MS) components, inflammatory markers, and oxidative stress, according to age. However, age-specific determinants of PWV have not yet been studied. We investigated age-dependent relationships among PWV and MS components, inflammatory markers, and oxidative stress. METHODS A total of 4,318 subjects...

Wave Velocity Dispersion and Attenuation in Media Exhibiting Internal Oscillations

Modeling the propagation of acoustic or fully elastic (i.e. seismic) waves is an important tool for interpreting, understanding and predicting real-world measurements in various industrial disciplines. In this context, modeling can be anything from three-dimensional full waveform modeling using numerical techniques (e.g. finite difference method, finite element method, spectral method; Kelly & ...