نتایج جستجو برای: griffings method 1
تعداد نتایج: 4076496 فیلتر نتایج به سال:
دیوارهای خاک مسلّح ، دیوارهای مقرون به صرفه ای هستند که امروزه کاربرد زیادی در پروژه های عمرانی دارند. پایداری دیوارهای خاک مسلّح از دو جنبه پایداری خارجی و پایداری درونی مدّ نظر است. پایداری درونی دیوار شامل پایداری در برابر گسیختگی و بیرون کشیدگی مسلّح کننده ها می باشد. جهت بررسی پایداری درونی دیوار بایستی نیروی مسلّح کننده ها محاسبه شود. برای محاسبه این نیروها روش های مختلفی ارائه شده که در این ت...
the purpose of this study was the relationship between problem – solvi ability with fdi cognitive style of students.the research method was correlation method. for data analysis pearson test was used. statistical society in this research was all the students of alligoodarz city in 1391-92 year.to sampling of statiscal population was used sampling multi-stage random the size of sample selected 2...
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
Interest in studying nonlinear models has been increasing recent years. Dynamical systems, which the state of system changes continuously over time, have interactions. The use unique differential equations is inescapable evaluation such systems. In mathematical point view, for obtaining analytical solutions equations, it must be fully integrable. Consequently, importance integrable science becom...
In this paper, based on sinh-cosh method and sinh-Gordon expansion method,families of solutions of (2+1)-dimensional breaking soliton equation are obtained.These solutions include Jacobi elliptic function solution, soliton solution,trigonometric function solution.
in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry all...
طی یک بررسی آینده نگر که ازتاریخ 71/5/1 لغایت 71/10/15 انجام شد، 150 بیم بصورت کاملا تصادفی انتخاب شده و بررسی های لازم در مورد آنها صورت گرفت .از 50 بیمار 84 نفرمرد) 56(و 66 مورد) 44(زن بودند و حداکثر موارد ابتلا دربین گروه های سنی 40-60 ساله بود.از تعداد کل بیماران 53 نفر) 35(سابقه مصرف سیگار راذکر می کردند و 42 نفر ازبیماران 28 سابقه خانوادگی پرفشاری شریانی رادرخانواده خودبیان می کردند . روش...
the aim of this study has been to find answers for the following questions: 1. what is the effect of immediate correction on students pronunciation errors? 2. what would be the effect of teaching the more rgular patterns of english pronunciation? 3. is there any significant difference between the two methods of dealing with pronuciation errore, i. e., correction and the teaching of the regular ...
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
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