نتایج جستجو برای: feedback anc

تعداد نتایج: 150467  

1997
S. Johansson M. Winberg T. Lago I. Claesson

In helicopters, the low frequency noise generated by the rotors and engines often masks and jeopardizes safe communication. Additionally, pilots are likely to suffer from hearing damages due to the higher sound levels in the headset produced whencompensatingfor the noiseby increasedspeakerlevels. A feasible approach is to reduce the low frequency noise using active techniques, thereby enabling ...

2011
Iman Tabatabaei Ardekani Waleed H. Abdulla

This paper represents a short review on active noise control (ANC) with the emphasis on ANC systems implemented by using FxLMS adaptation algorithm. The physical mechanism behind active noise control, based on which local silence zones can be created is detailed. Basic configurations for realization of ANC systems are then introduced. It is shown that FxLMS algorithm has been widely used in dif...

Journal: :South African Historical Journal 2012

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده ادبیات و علوم انسانی 1390

the present study was concerned with exploring the frequency and linguistic focus of corrective feedback types given by novice and experienced female teachers working with young learners and compared it with those of elementary classes for adults. moreover, it aimed at measuring learners’ acknowledgement of teachers’ corrective feedback in the form of uptake in relation to linguistic coverage o...

Journal: :Frontiers in Astronomy and Space Sciences 2020

Journal: :Journal of physics 2022

Abstract In the contemporary society, ANC (active noise cancellation) technology has become more and popular. It grown from its originally military industry fields into commercial fields, it is still being implemented areas fields. this paper, we briefly introduce some principal of algorithms contrast their results with traditional ones focus on challenges for future applications.

2011
Toan K Tran Chuc TK Nguyen Hinh D Nguyen Bo Eriksson Goran Bondjers Karin Gottvall Henry Ascher Max Petzold

BACKGROUND The use of antenatal care (ANC) varies between countries and in different settings within each country. Most previous studies of ANC in Vietnam have been cross-sectional, and conducted in rural areas before the year 2000. This study aims to compare the pattern and the adequacy of ANC used in rural and urban Vietnam following two cohorts of pregnant women. METHODS A comparative stud...

2016
Sohail Agha Hannah Tappis

BACKGROUND Policymakers and program planners consider antenatal care (ANC) coverage to be a primary measure of improvements in maternal health. Yet, evidence from multiple countries indicates that ANC coverage has no necessary relationship with the content of services provided. This study examines the relationship between the timing of the first ANC check-up, a potential predictor of the conten...

2014
Svetlana V Doubova Ricardo Pérez-Cuevas Eduardo Ortiz-Panozo Bernardo Hernández-Prado

BACKGROUND Evaluation of the quality of antenatal care (ANC) using indicators should be part of the efforts to improve primary care services in developing countries. The growing use of the electronic health record (EHR) has the potential of making the evaluation more efficient. The objectives of this study were: (a) to develop quality indicators for ANC and (b) to evaluate the quality of ANC us...

Journal: :Nagoya journal of medical science 2010
Yang Ye Yoshitoku Yoshida Md Harun-Or-Rashid Junichi Sakamoto

The aim of this study was to identify the socio-demographic characteristics, knowledge, attitude and accessibility factors related to the utilization of antenatal care (ANC) service among pregnant women in the Kham District, Laos. Data for this cross-sectional study were collected in July 2008, using a two-stage cluster sampling strategy from 24 selected villages in the Kham District. A total o...

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