study presents a statistical assessment of clothed human skin model exposure from 20 to 100 GHz. Dielectric property data for two typical textile materials, i.e., cotton and wool, were provided for the first time over the entire frequency range. A statistical analysis of the ratio of absorbed power density (APD) to skin temperature elevation was pe...
High-performance electric drive applications necessitate a high fidelity model to predict the terminal characteristics of machines in the design stage to fulfill a system-level evaluation together with the converters. This article interprets winding function theory (WFT) from the field perspective and incorporates secondary effects, such as slottin...
This article presents a study of the impact of finite-radius wire antennas in the High Frequency (HF) and the Very HighFrequency (VHF) bands on human operators located in the near-field zone. Modeling a finite-radius wire antenna can be a verytricky task, since the antenna parameters, such as the input impedance and the radiated power depend on the...
Design optimization of a permanent magnet eddy current brake (PM-ECB) is performed by applying multiobjective particle swarm optimization (MO-PSO) for cost minimization. A previously designed and patented PM-ECB is used as a reference model in the study. A quasi-3-dimensional (3D) analytical modeling approach based on a reluctance network consideri...
Megavoltage radiotherapy to irregular superficial targets is challenging due to the skin sparing effect. We developed a three-dimensional bolus (3DB) program to assess the clinical impact on dosimetric and patient outcomes. Planar commercial bolus (PCB) and 3DB density, clarity, and net bolus effect were rigorously evaluated prior to clinical imple...
Soft magnetic composites (SMCs) based magnetic cores are attractive in high frequency inductor design. The desired overall core permeability of SMC core can be achieved by adjusting the powder size, addition of insulation material and phosphoric acid, and pressure during the preparation process to reduce the air gap loss and ease the inductor desig...
In the present work, an easily implementable method to reduce CPU time for some 3D FEM problems is presented. A translational displacement between two parts on both sides of a planar airgap is taken into account with a change of coordinates in the airgap region along the z-axis. To achieve this, formulation and post processing are slightly adapted....
Yoke-based permanent magnetic circuits are widely used in Kibble balance experiments. In these magnetic systems, the coil current, with positive and negative signs in two steps of the weighing measurement, can cause an additional magnetic flux in the circuit and hence a magnetic field change at the coil position. The magnetic field change due to th...
Published in Brachytherapy
Postinsertion computed tomography (CT) can identify air gaps (AGs) around the cylinder in vaginal cuff brachytherapy (VCB). This study investigates the incidence and location of AGs. Planning CTs of 22 prospectively recruited patients (NCT02091050) treated with 2.6 cm (n = 8) and 3.0 cm (n = 14) cylinders were evaluated. In addition, a systematic l...
To investigate the dosimetric effect of air gaps under bolus on skin dose for left-sided post-mastectomy radiotherapy with loco regional involvement. Eight patients were planned retrospectively with volume modulated arc therapy (VMAT) and conventional static Field-in-Field (FinF) methods. Three different setups were applied for the 5-mm bolus over ...
