This paper considers high sampling rate digital control of an electromagnetically levitated shaft. Inner loop feedback and outer loop repetitive controls are realized by a Field Programmable Gate Array (FPGA) at 100 kHz rate based on considerations made on limited FPGA computing resources, numerical dynamic range, selection of word length for fixed point computation, and distribution of paralle...

Optimizing executions of queries is the ultimate goal of the query optimizer. Unfortunately, due to the complexities of queries, accuracy of statistics, validities of assumptions, etc., query optimizers often cannot find the best execution plans in their search spaces, conveniently called the optimal plans, for the queries. In this paper, we develop a comprehensive framework for re-optimization...

This paper describes a technique that speeds up both the modelling and the sampling processes for a ramified object. By introducing the notion of substructure, we divide the ramified object into a set of ordered substructures, among which only a part of basic substructures is selected for implicit modelling and point sampling. Other substructures or even the whole object can then be directly in...

Acceptance sampling had become an essential practical tool for quality assurance application, closely related with incoming inspection. Acceptance sampling plans provide the decision rule for product acceptance to meet the preset product quality required by the vendor and the buyer. As today’s modern paradigm of quality improvement, reduction of variance from the target value is the guiding pri...

Objective: To analyze the effect of postpartum depression treated with high-frequency repetitive transcranial magnetic stimulation combined general acupuncture. Methods: Screening 45 patients diagnosed in our hospital during period from August 2019 to 2022 as study subjects, according treatment plan chosen by patients, we included 22 who received conventional conservative medication into contro...

the aim of this study was to investigate national jump roping plan on static and dynamic balance of students. in this study, pretest and posttest were used with two experimental and control groups for male students of fourth grade of elementary school in 2011-2012 in baharestan city (a region in robat karim, tehran). for this purpose, 60 students were selected from students of fourth grade of e...

Repetitive control (RC) scheme presents an attractive solution to achieve excellent steady-state tracking error and low total harmonic distortion (THD) for periodic signals. RC can produce extremely large gains at fundamental and each harmonic frequency of reference signal to achieve all harmonics suppression. However, a DC-AC inverter always has uneven THD distribution, e.g. THD concentrates a...

This experimental study evaluated the possible effects of textual input- based enhancement on the acquisition of passive form on Iranian pre-intermediate EFL learners. Sixty Iranian EFL learners at the pre-intermediate level of proficiency were randomly assigned into three groups; two experimental group and one comparison group. The first experimental group received passages in which the passiv...

A sequence r1, r2, . . . , r2n such that ri = rn+i for all 1 ≤ i ≤ n, is called a repetition. A sequence S is called non-repetitive if no block (i.e. subsequence of consecutive terms of S) is a repetition. Let G be a graph whose edges are coloured. A trail is called non-repetitive if the sequence of colours of its edges is non-repetitive. If G is a plane graph, a facial non-repetitive edge-colo...