نتایج جستجو برای: system theory
تعداد نتایج: 2832163 فیلتر نتایج به سال:
the cooperation theory of the parties and the judge in the settlement of disputes is a new issue in the civil procedure that has been presented by one researcher in recent years. the cooperation theory is defined to mean law enforcement. in other wllmords, the parties and the judge participate with each other to settle a dispute. although in some of the new rules this theory can be seen sporadi...
most of authors (1-7) have used discontinious methods based on trial and error procedures for determination of optimum distribution of kh and ?h. optimal control theory has not been used for gas reservoirs. hence, in this paper optimal control theory is utilized for mathematical simulation of gas reservoir and optimum distributions of kh and ?h are presented. one of themain advantages of this n...
In this paper, we propose a Controlled Inductance Power Filter (CIPF) to solve power quality problems in industrial DC power supply systems. This method is based on the theory of magnetic potential equilibrium combined with active hybrid filter technology. Initially the system structure and filter wiring scheme are presented and the equivalent circuit is performed with the mathematical models o...
the adaptation of sociological theories to historical subjects, despite the problems it encounters, is something that new historiography should start to do for dynamism and to avoid pure quotation of historical events and it should enjoy the results of other fields studies, especially sociology. in this case, system theory has an important position in appropriate analysis and explanation of his...
this paper presents the thermal vibration analysis of double-layer graphene sheet embedded in polymer elastic medium, using the plate theory and nonlocal continuum mechanics for small scale effects. the graphene is modeled based on continuum plate theory and the axial stress caused by the thermal effects is also considered. nonlocal governing equations of motion for this double-layer graphene s...
previous studies have aimed at testing a hypothesis but the present study is data-first research in which researcher tries to form a theory from data rather than the use of data to test a hypothesis. this study aims at exploring teachers perceptions of the strengths and weaknesses of the current syllabus for college preparatory course. eight experienced teachers were selected to collect data du...
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 ...
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