This paper describes latest RF Automated Test Equipment (RF ATE) technologies that include device under test (DUT) connections, a calibration method, and an RF test module mainly focusing on low cost of test (COT). Most important respect for low COT is how achieve a number of simultaneous measurements and short test time as well as a plain calibration. We realized these respects by a newly prop...

Abstract. Random Forest (RF) is a powerful ensemble method for classification and regression tasks. It consists of decision trees set. Although, a single tree is well interpretable for human, the ensemble of trees is a black-box model. The popular technique to look inside the RF model is to visualize a RF proximity matrix obtained on data samples with Multidimensional Scaling (MDS) method. Here...

objective: titration of viruses is important to determine the quantity of virus in vaccine development, master virus seed stock preparation, viral vector studies and virus replication. in this study, we compared the ccid50% and plaque assay as a standard titration method for rotavirus (rf) and hsv-1.   methods: the ma104 and vero cells were inoculated by rf and hsv-1 in 6- and 96-well plates. f...

Introduction: One of the major causes of image non-uniformity in MRI is due to the existence of  non-homogeneity in RF receive and transmit. This can be the most effective source of error in  quantitative  studies  in  MRI  imaging.  Part  of  this  non-homogeneity  demonstrates  the  characteristics of RF coil and part of it is due to the interaction of RF field with the material being  imaged...

Objective(s): Nowadays, the electromagnetic field-emitting devices are used routinely in our lives. Controversial reports exist concerning the effects of mobile radiofrequency (RF) on different parts of the body, especially stress hormones. The main goal of the present work was to study the long-term effects of mobile RF900 MHz exposure with special focus on the adrenal gland pathophysiology an...

Objectives. To assess the reliability of the automated radio frequency (RF)-based US measurement of carotid intima media thickness (IMT) performed by rheumatologists and to evaluate the variability between this method and the conventional B-mode US measurement of carotid IMT in RA patients. Methods. Twelve rheumatologists measured in two blinded rounds the IMT of both common carotid arteries (C...

Radio-Frequency (RF) ablation is a minimally invasive method for treatment of primary and metastatic hepatic tumors. A catheter is introduced transcutaneously into the tumor, and tissue is heated up by application of radio-frequency current. In this work, I present the application of the Finite Element Method (FEM) for creating models of hepatic RF ablation to evaluate and improve catheter desi...

Introduction: A conformal RF coil array design for use in a MRI system is proposed. In particular, the coil array is designed without the use of any cumbersome mutual decoupling schemes. Coil elements are designed based on orthogonality, which will naturally minimise the problematic mutual coupling effects that inherently exist in most MRI phased-array systems [1]. A prototype of a knee coil co...

An RF adaptive array antenna (RF-AAA) configured with variable capacitors is proposed. This antenna system can control the power combining ratio and phase value of received signals. In this paper, we focus on the diversity effects of RF-AAA. First, we show the design methodology of the combiner circuit to realize the effective combining. Second, the perturbation method and the steepest gradient...