نتایج جستجو برای: tail depth

تعداد نتایج: 212192  

K Neisi M Shafai Bejestan

Formation of hydraulic jump is necessary for dissipation of the excess kinetic energy downstream of spillways and gates. Hydraulic jump stilling basins of sudden expansion are one of the energy dissipater structures which are used where the available tail water depth is less than the required sequent depths. In the present study to further reduce the hydraulic jump sequent depths ratio, a rough...

ژورنال: علوم آب و خاک 2011
جواد فرهودی, , حسین حمیدی فر, , محمد حسین امید, ,

This paper presents the results of an analytical and experimental study on the characteristics of hydraulic jump in a triangular channel. The analytical consideration is based on the momentum conservation law for the upstream and downstream sections of the jump. The experiments were carried out in a triangular channel of glass side walls with the vertex angle of 94.4°. A wide range of discharge...

Journal: :international journal of environmental research 0

light is never being distributed homogeneously and it forms a gradient over biomass. the unidirectional nature of light gives rise to a vertical gradient of light intensity as a function of depth. the maximum depth of the light zone suitable for phytoplankton photosynthesis is designated as the euphotic depth. this study was designed to test the hypothesis of mixing depth of phytoplankton and i...

2017
Benjamin Rossman

We show that the decision tree size of a function f : {0, 1} → {0, 1} computed by an AC circuit of depth d and size s is at most O(2(1−p)n) where p = 1/O(log s)d−1. This result follows from an exponential tail bound on the decision tree depth of the randomly restricted function f Rp: for all t ≥ 0, we show that P[ DTdepth(f Rp) ≥ t ] ≤ exp(−t). For t ≤ log s, this is a straightforward consequen...

2016
V. K. Agrawal Mohammad Hasan

In this work we investigate broad band (1-79 keV) spectral nature of the atoll source 4U 1636-536 using the combined Nu-STAR and SWIFT-XRT data. The spectra are complex and have emission components from the disc, boundary-layer and corona. In addition to that a broad iron line is also observed. A relativistic line model assuming Schwarzchild metric fits this feature. The total flux varies from ...

Journal: Desert 2015

One of the most concerning issues for researchers is to predict the shape and dimensions of the scour pit nearhydraulic structures such as the base of bridges, weirs, valves and stilling basins due to both financial and humanhazards induced by destruction of the structure. As the scour issue has its own complexity in relation to themultiplicity of effecting factors on it, in this study therefor...

The scouring process at downstream of the hydraulic structures is a complex phenomenon and many parameters affecting its amount. Failure to control this phenomenon causes damages to the dam and its associated hydraulic structures. In this research, the scouring caused by the combination of jets outlet from a gated spillway was investigated experimentally and the combination of jets adjacent to ...

An experimental study was performed to investigate the effects of the body angle of attack on the tail surface pressure distribution for a half body-tail combination in subsonic flow. The results show, in small deflection angle regions, that the tail deflection has the same effect on the surface pressure as the body angle of attack. However at moderate to high deflections, the flowfiled caused ...

Journal: :The journal of risk 2021

In risk management, tail risks are of crucial importance. The quality a model, which is determined by data from an unknown distribution, depends critically on the subset used to model tail. Based suitably weighted mean square error, we present method that can separate required subset. selected determine parameters model. Notably, no parameter specifications have be made apply proposed procedure...

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