This article proposes a fast and robust technique for instantaneous phase angle estimation of three-phase voltage systems under unbalanced distorted conditions. It mainly relies on the Clarke transformation, Teager energy operator, delayed signal cancellation (DSC) approach. Unlike an adaptive DSC-based synchronous-reference frame phase-locked loop (PLL), proposed avoids interdependent loops, t...

Purpose: The purpose of this study is to examine the differences of kinetic and kinematic variables in middle-aged women with genu varum and normal knee angle during walking and running. Methods: Eight middle-aged women with genu varum (age: 45.12 ±12.74 y, height: 160.62 ± 5.26 cm, weight: 71.75 ± 16.38 kg, right tibiofemoral angle: -4 ± 3.9, left tibiofemoral angle: -5.1 ± 4.6) and 7 wi...

Dragonflies achieve agile maneuverability by flapping four wings independently. Different phase angles between the flapping forewing and hindwing have been observed during various flight modes. The aerodynamic performance depends on phase angle control, as exemplified by an artificial flying ornithopter. Here, we present a dragonfly-like ornithopter whose phase angle was designed to vary accord...

With increase in the unauthorized users access, it is required to increase the security in the Near Field Communication (NFC). In the paper we propose a user behavior based enhanced protocol entitled ‘User Behavior based Enhanced Protocol (UBEP)’ to increase the security in NFC enabled devices. The UBEP works on the history of interaction of a user with system.The propose protocol considers fou...

this study investigated 1) whether the effect of teacher-developed graphic organizers vis-à-vis student-developed ones was more significant on improving intermediate efl learners’ writing, and 2)whether the use of both graphic organizers had any impact on their writing. the participants were selectedin two stages: 130 students sat for a piloted proficiency test. those who scored above half ofth...

OBJECTIVE To calculate the values of the phase angle of septic patients using bioelectrical impedance analysis, correlate the values with clinical and biochemical variables, and compare them to reference values. METHODS Cohort study conducted with 50 septic patients aged ≥ 18 years old, admitted to intensive care units, and assessed according to prognostic indexes (APACHE II and SOFA), clinic...

Brewster angle microscopy N·dodecyl·y·hydroxybutyric acid amide synchrotron X·ray grazing incidence diffraction 4'·oclyl-1,1 '-biphenyl-4·carbonilride Brewster angle microscopy has been involved in some of tho recent advances in tho field of monomolecular layers, such as the detection of a phase transition in monolayars formed by a surfactant at the solution surface, the determination of the li...

Introduction: An accurate phase function is necessary for precise photometric correction of the Clementine lunar UVVIS images. Although several researchers have proposed photometric models for Clementine UVVIS images using empirical phase functions (e.g., [1] [2] [3]), additional work is required for correction of the data at small phase angle (<20), because the phase function at small phase an...