نتایج جستجو برای: wave parameters
تعداد نتایج: 779811 فیلتر نتایج به سال:
In this article, the stress-time or speed-time relation for a steady intense shock wave front and effective parameters on it in solid metals (except alkaline metals) were studied. First, the parameters relevant to the deformation of a pure material were identified and a relation between them was found. Then with simplifying assumptions, a stress change equation was obtained. Afterwards, the mod...
The major problems in modeling of different oceanographic and meteorological parameters are limitations in numerical methods and human incomplete knowledge in physical processes involved. As a result, significant differences between the results of these models and in situ observations of these parameters might exist. One of the powerful solutions for decreasing the forecast errors in the models...
Wave height as well as water depth at the breaking point are two basic parameters which are necessary for studying coastal processes. In this study, the application of soft computing-based methods such as artificial neural network (ANN), fuzzy inference system (FIS), adaptive neuro fuzzy inference system (ANFIS) and semi-empirical models for prediction of these parameters are investigated. Th...
background: we sought to assess right ventricular (rv) systolic and diastolic functions via tissue doppler imaging (tdi) in order to discriminate right-to-left (bidirectional) from left-to-right intracardiac shunts. methods: a tissue doppler velocity study via doppler echocardiography was performed in 20 patients with left-to-right shunt (without evidence of significant pulmonary hypertension) ...
Prediction of wave height is of great importance in marine and coastal engineering. In this study, the performances of artificial neural networks (feed forward with back propagation algorithm) for online significant wave heights prediction, in Persian Gulf, were investigated. The data set used in this study comprises wave and wind data gathered from shallow water location in Persian Gulf. Curre...
t-wave oversensing occurs when the counter starts giving dual beeps for every cardiac cycle instead of one. this usually happens when the monitoring lead displays a tall t wave, which is also sharp. r wave sensing algorithms of the devices do not sense t wave because the slow rate of the t wave is much less than that of the r wave. but the slow rate of t waves may change with time and also beca...
we propose a scheme for localizing an atom in a four-level configuration inside a classical standing wave field, conditioned upon the measurement of frequency of a weak probe field. in the classical standing wave field, the interaction between the atom and the field is position dependent due to the rabi-frequency of the driving field. hence, as the absorption frequency of the probe field is mea...
اثر متقابل فاز پادفرومغناطیس (af) و ابررسانایی (sc) همواره مورد توجه فیزیکدانان تجربی و نظری بوده است. رقابت میان دو پارامتر نظم متفاوت در بسیاری از سیستم های گوناگون از جمله ابررساناهای دمای بالا دیده شده است. در برخی ترکیبات مثل اکسید مس فازهای پادفرومغناطیس و ابررسانایی بسیار نزدیک بهم ولی مجزا هستند؛ در حالی که در ترکیبات دیگری از قبیل ابررساناهای آلی، ترکیبات سه تایی و ترکیبات فرمیون های س...
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