The loads in the deep beams are transmitted diagonally from load area to support by means of strut and tie. It is characterized having a small span depth ratio. which causes distribution stresses be non-linear within beam, motivates researchers study effect placing longitudinal hollows extent these holes affect behavior for types beams. In addition advantages added hollow beam such as reducing ...

Flattening filter-free (FFF) beams are available on an increasing number of commercial linear accelerators. FFF beams have higher dose rates than flattened beams of equivalent energy which can lead to increased efficiency of treatment delivery, especially in conjunction with increased FFF beam energy and arc-based delivery configurations. The purpose of this study is to quantify and assess the ...

background: the purpose of this paper is to establish an easy and reliable biodosimeter protocol to evaluate the biological effects of proton beams. materials and methods: human peripheral blood lymphocytes were irradiated using proton beams (let: 34.6 kev μm−1), and the chromosome aberrations induced were analyzed using cytokinesis-blocked (cb) micronucleus (mn) assay. to determine the efficie...

The inclusion of D-regions within a reinforced-concrete member may affect largely the general behavior structure. Different techniques and approaches were proposed to control behaviour D-regions, such as shear-friction approach STM model. Such proposals not be applicable for all types Dregions. current work presents nonlinear finite element model using ANSYS software, that is adopted study thre...

This letter studies deep learning methods for beam selection in multiuser beamforming with limited feedback. We construct a set of orthogonal random beams and allocate the to users maximize sum rate, based on feedback regarding channel power beams. formulate allocation problem as classification or regression task using neural network (DNN). The results demonstrate that DNN-based achieve higher ...

in this paper, collapse behavior of simple and reinforced thin-walled channel- section beams, subjected to three- point bending, is investigated. many simple channel- section beams of different geometry and some reinforced ones were tested, and their strengths after collapse were obtained thoroughly. since the available theories in this area are complicated and little attention has been paid to...

A new solution for the acoustic field produced by a point source in a wedge-shaped ocean channel with pressure-release boundaries is presented. The solution is in the form of a sum of normal modes, which reduces in the immediate vicinity of the source point to the free-field solution for a point source. The radiation field associated with each mode forms a well-defined beam which diverges as th...