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تعداد نتایج: 1201291 فیلتر نتایج به سال:
Knowledge of aircraft InfraRed Signature (IRS) is indispensable for assessing their detection probability, and thus their survivability in an hostile environment. By signature, we mean all the quantities for predicting the signal that would be observed by an optronic sensor when the aircraft is in its surroundings. For many reasons, the experimental approach is generally not feasible to evaluat...
چکیده سنگ های آتشفشانی فلسیک بخش قابل ملاحظه ای از توالی آتشفشانی ترشیری شمال غرب کاشان را به خود اختصاص داده است. این منطقه بخشی از کمان ماگمایی ارومیه – دختر محسوب شده و طیفی از سنگ های آندزیت بازالتی، آندزیت، داسیت و ریولیت را شامل می گردد. سنگ های آتشفشانی فلسیک منطقه به طور عمده دارای بافت پورفیریتیک و خمیره ای بسیار ریزدانه و گاه میکرولیتی تا شیشه ای هستند. فنوکریست های فلدسپات کم و بیش ...
abstract: since sugar consumption is directly related to diabetes and other illnesses such as obesity, the issue that will most heavily dominate the health food market is blood sugar management and low glycemic foods. using calcium chloride and gums such as sodium alginate and low ester pectin as thikener and a high-potency sweetener aspartame we were able to reduce sugar content of sour cherry...
Operational transconductance amplifier and capacitor (OTA-C) filters have outstood among different types of filter due to high frequency and low power capabilities in the main stream digital CMOS technology. They have been widely used in computer hard disk drive (HDD) and wireless communication transceivers. OTA-C filters based on cascade and passive ladder simulation are well-known. However, m...
The bona fide acquisition of immovable property from an unauthorized alienator is usually understood in China as its a person whose right mistakenly registered the register real estate rights, due to reasonable confidence acquirer registration record, payment rationally justified purchase price and publication his manner prescribed by law. This system based on combination traditional mechanism ...
this study aimed at examining the effects of iranian efl learners’ anxiety, ambiguity tolerance, and gender on their preferences for corrective feedback (cf, henceforth). the effects were sought with regard to the necessity, frequency, and timing of cf, types of errors that need to be treated, types of cf, and choice of correctors. seventy-five iranian efl students, twenty-eight males and forty...
a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...
In this paper, the frequency offset estimation schemes robust to the non-Gaussian noise for orthogonal frequency division multiplexing (OFDM) systems are addressed. First, a maximum-likelihood (ML) estimation scheme in non-Gaussian noise is proposed, and then a simpler estimation scheme based on the ML estimation scheme is presented. Numerical results show that the proposed schemes offer robust...
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