نتایج جستجو برای: centralcomposite design
تعداد نتایج: 960118 فیلتر نتایج به سال:
this study investigated the effect of prior knowledge on the listening comprehension performance of fl learners. twenty students, male and female, drawn from the two intact groups of the senior and junior english language and literature majors were chosen as the participants of this study . the two groups were then randomly assigned into the experimental and control group. the experimental gr...
رابطه ی انسان با طبیعت موضوعی جذاب و مورد توجه در امر طراحی و معماری است که میزان این رابطه دائماً در نوسان بوده است. دغدغه پاسخگویی به این نیاز منجر به پیدایش گرایشاتی در حوزه ی طراحی گشته است. گرایشاتی نظیر طراحی ارگانیک، طراحی پایدار، طراحی سبز و طراحی اکوتک. اما در این میان گرایشی با عنوان طراحی طبیعت دوست “biophilic design” شکل گرفته که در پی دستیابی به راهکارهایی است که طی آن طبیعت بکر را ...
the purpose of this study was to find the relationship between critical thinking and self-regulation with reading comprehension of iranian female elementary language learners. the present study is a correlational one having a descriptive design. two questionnaires, critical thinking questionnaire and self-regulation questionnaire which were valid and reliable questionnaires and four reading com...
Since nature of architecture is quite different from that of other fields of study, the criteria used forjudging projects in this field continuously undergo some changes. On the other hand, because of the undeniable role ofhuman factors in judging the projects, there is always a percentage of deviation from the standard given the interestsof the judging committee. The standards of judging archi...
Here, we present a novel two-step approach for optimum design of cellular truss-beams based on desired natural frequencies. The proposed approach at- tempts to decrease the design complexities, based on the so called Axiomatic Design, before any eort to solve the physical problem itself. It also serves as a generic approach which nds its generality through dimensional analysis with its accuracy...
Natural ventilation is among those effective methods that is useful in hot dry climates. One of its important uses is in the atrium spaces in the office buildings. Although, as a passive solution, it has a significant impact on the reduction of energy consumption, the control of inlet and outflow of air as well as the control of air current temperature has always been a challenge for architects...
this thesis is presented 10 ghz voltage controlled ring oscillator for high speed application. the voltage controlled ring oscillator was designed and fabricated in 0.13یm cmos technology. the oscillator is 7-stages ring oscillator with one inverter replaced by nand-gate for shutting down in the ring oscillator during idle mode. tri-state inverter was used to control of 126 bit vector in ri...
در این پایان نامه به آنالیز و طراحی و همچنین شبیه سازی یک میکسر در باند فرکانسی ghz 0.5-6 با استفاده از تکنولوژی tsmc rf cmos 0.18 µmپرداخته شده است. هسته اصلی این میکسر ساختار کسکود می باشد که باعث افزایش بهره و خطسانی و نویز فیگر می شود، اما معمولا داری توان تلفاتی نسبتا بالایی می باشد. در این پایان نامه برای بهبود معضل یاد شده، از تکنیک تزریق بدنه استفاده شده است. استفاده از دژنراسیون مقاومت...
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