Field oriented control (FOC) is one of the most successful control schemes for electrical machines. In this article new properties of FOC schemes for induction motors (IMs) are revealed by studying the cross-coupling of the flux-torque subsystem. Through the use of frequency-based multivariable tools, it is shown that FOC has intrinsic stator currents disturbance rejection properties due to the...

This study investigated the association between fear of childbirth (FOC) and women's knowledge about painless childbirth methods. The study was performed on 900 multiparous women within the last month of pregnancy. Data was obtained through a questionnaire including the Wijma Delivery Expectancy/Experience Questionnaire (W-DEQ) Turkish form A. FOC was defined as W-DEQ sum score ≥85. Women were ...

To explore and describe norms concerning maternity, femininity cisgender in lesbian bisexual women transgender people (LBT) assigned female at birth, with an expressed fear of childbirth (FOC). Semi-structured interviews were conducted self-identified LBT FOC. 17 participated. 15 had FOC, two non-afraid partners. Participants described how their FOC was related to ideals “the primal woman”, inc...

Fractional-Order Controllers (FOC) extend PID controllers by using non-integer order integral and derivative actions. They have many advantages even if the tuning methods are still at their infancy. Hence we apply Differential Evolution (DE) optimization to tune parameters of FOC in a unitary feedback linear control system of a first order plana with a lag plus an integrator. The FOC combines t...

Induction motors are widely used in the industry due to its relative low cost, low maintenance and high reliability. The development of the computer and electronic industry, as well as design of new control methods, has opened the door to control induction motors. In order to control the induction motors, scalar and vector control methods are used. Vector methods have faster response and more p...

This study examines the effects of "any willing provider" (AWP) and "freedom of choice" (FOC) laws on the market share of health maintenance organizations (HMOs) in metropolitan statistical areas over the period 1989-95. We use pooled cross-section time-series regression techniques with year and state fixed effects. HMO market share is hypothesized to be a function of state laws, market charact...

Pathogenic isolates of Fusarium oxysporum, distinguished as formae speciales (f. spp.) on the basis of their host specificity, cause crown rots, root rots and vascular wilts on many important crops worldwide. Fusarium oxysporum f. sp. cepae (FOC) is particularly problematic to onion growers worldwide and is increasing in prevalence in the UK. We characterized 31 F. oxysporum isolates collected ...

ABSTRACT A worldwide collection of Fusarium oxysporum f. sp. cubense was analyzed using anonymous, single-copy, restriction fragment length polymorphism (RFLP) loci. Several lines of evidence indicated that this pathogen has a clonal population structure. Of the 165 isolates examined, only 72 RFLP haplotypes were identified, and nearly half the isolates were represented by the five most common ...

Fear of childbirth (FOC) may affect family planning in lesbian, bisexual and transgender (LBT) couples with two potential carriers a pregnancy. FOC has previously been researched heterosexual women, while experiences LBT people have remained unattended. The choice birth-giving partner same-sex gained some attention previous research, but the complexities decision not studied. aim is to explore ...

The main aim of this contribution is to introduce the fundamentals of the Fractional Order Calculus (FOC) and outline its possible application to analysis and synthesis of control systems. The basic theoretical concepts of FOC are followed by techniques for potential fractional order systems description and stability investigation. Moreover, the paper offers the overview of the existing fractio...