نتایج جستجو برای: low rate of conventional gain

تعداد نتایج: 21290171  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1393

the purpose of the present study was to investigate the relationship between fear of negative evaluation (fne) and communication strategies (css) among iranian efl learners. it was aimed to examine the differences in the use of communication strategies between speakers with high or low degree of fear of negative evaluation. the current study was a case study consisting of 10 english learners at...

In some industries applications such as fuel cells, we must use a high voltage gain dc-dc converters for increasing voltage, but, the conventional converters cannot provide the high voltage gain with increasing duty cycle and the converters efficiency is limited by the equivalent series resistances. For this reason, in this paper, a single switch transformerless high step-up dc-dc converter wit...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

‏‎applications such as high definition viedeo reproduction, portable computers, wireless, and multimedia demand, and ever-increasing need for ligh-frequency high-resolution and low-power analog-to-digital converters. flash, two-step flash, and pipeline convertors are fast but consume large amount of power and require large area. to overcome these problems, successive approximation converter blo...

Journal: :auditory and vestibular research 0
marjan soleimani department of audiology, school of rehabilitation, tehran university of medical sciences, tehran, iran seyyed jalal sameni department of audiology, school of rehabilitation sciences, iran university of medical sciences, tehran, iran farhad torabi nezhad department of speech therapy, school of rehabilitation sciences, iran university of medical sciences, tehran, iran yahya modarresi department of linguistics, institute for humanities and cultural studies, tehran, iran mohammad kamali department of rehabilitation management, school of rehabilitation sciences, iran university of medical sciences, tehran, iran

background and aim: as the most perceived and articulated errors of hearing aid users occur in high frequency speech phonemes, this study aimed to find a way to amplify and reconstruct the errors. thus, the study first prepared a recorded form of two persian fricative consonants as stimulus; then, the rate of the prescribed gain of the two methods of national acoustic laboratories-nonlinear 2 (...

Journal: :medical journal of islamic republic of iran 0
ashraf mohammadzadeh neonatal research center, school of medicine, mashhad universityof medical sciences. mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)سازمان های دیگر: neonatal research center ahmadshah farhat neonatal research center, school of medicine, mashhad university of medical sciences. mashhad, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)سازمان های دیگر: neonatal research center mohsen jafarzadeh neonatal research center, school of medicine, mashhad university of medical sciences.mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)سازمان های دیگر: neonatal research center leili hasanzadeh neonatal research center, school of medicine, mashhad university of medical sciences.mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)سازمان های دیگر: neonatal research center habiballah esmaeli neonatal research center, school of medicine, mashhad university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)سازمان های دیگر: neonatal research center

abstract   background: the aim of study was to compare the effect of kangaroo mother care (kmc) and conventional methods of care (cmc) in low birth weight babies less than 2000 grams.   method: one hundred babies with birth weight less than 2000 grams and without clinical problem were randomized in two groups the intervention group (n=50) who received kangaroo mother care and the control group ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1391

reinsurance is widely recognized as an important instrument in the capital management of an insurance company as well as its risk management tool. this thesis is intended to determine premium rates for different types of reinsurance policies. also, given the fact that the reinsurance coverage of every company depends upon its reserves, so different types of reserves and the method of their calc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

abstract present research considered to examine and compare shahrray 14 years girls and boys narrative concerning with their responsibilities in this research, statistical society are 14 years girls and boys of shahrry . for performing this research. first, 14 years of 50 boys and 50 girls were selected in accidental method and have filled memati hormaled adolescents responsibility questioner...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده شیمی 1391

in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم انسانی 1390

this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...

Journal: :international journal of electrical and electronics engineering 0
mohammad neshati ferdowsi university of mashhad ٍelias rahimi ferdowsi university of mashhad

in this paper a new low profile substrate integrated waveguide (siw) probe-fed h-plane horn antenna structure with improved gain is proposed. the proposed antenna consists of two waveguides including a rectangular and a taper one, in which both, first and third modes of the structure are simultaneously excited leading to a uniform field distribution along the radiating aperture of the antenna a...

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