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101.374  Articles
1 of 10.138 pages  |  10  records  |  more records»
Introduction: This study investigates basic dosimetric properties of unflattened 6 MV photon beam shaped by multileaf collimator and compares them with those of flattened beams.Materials and Methods: Monte Carlo simulation model using BEAM code was develo... see more

Multi-beam massive multiple-input–multiple-output (MIMO) configurations that utilize high-power beam selection in the analog parts and blind algorithms such as the constant modulus algorithm (CMA), which do not require channel state information (CSI), in ... see more

Antenna array-based multi-dimensional infinite-impulse response (IIR) digital beamformers are employed in a multitude of radio frequency (RF) applications ranging from electronically-scanned radar, radio telescopes, long-range detection and target trackin... see more

In this work, we study the effect of the thickness variation of viscoelastic layer inserted in a laminated multi-layer beam in forced vibration on the vertical displacements and on the natural frequencies. The new structure is a sandwich structure compose... see more

Teknologi 4G Long Term Evolution (LTE) menawarkan kecepatan akses paket data yang jauh lebih cepat dari generasi sebelumnya. Namun pada kondisi area-area padat penduduk, kecepatan akses paket data yang dirasakan oleh pengguna akan dirasakan berbeda. Hal i... see more

This paper newly proposes a frequency domain backoff scheme dedicated to continuous beamforming space division multiple access (CB-SDMA) on massive antenna systems for wireless entrance (MAS-WE). The entrance base station (EBS) has individual base band si... see more

Efficient usage of energy resources is a growing concern in today’s communication systems. Energy harvesting is a new paradigm and allows the nodes to recharge their batteries from the environment. In this paper, we focus on the design of optimal linear b... see more

Multi-photon polymerization by interference is a promising technique for mass fabrication of 3D periodic micro-structures over large areas, which can be used in various fields such as biomedicine (cell growing), photonics (photonics crystals), etc. As dir... see more

The dynamics of spatial beam systems using the theory of graphs and automats is considered. It is shown that the structural composition of multidimensional models can be set using the spatial matrices. An efficient algorithm for the separation of the syst... see more

1 of 10.138 pages  |  10  records  |  more records»