نتایج جستجو برای: dynamic systems

تعداد نتایج: 1517174  

Journal: مهندسی دریا 2007
Ali Akbar Golafshani, Mohammad Reza Tabeshpour, Mohammad saied Seif,

However it is possible to use of numerical methods such as beta-Newmark in order to investigate the structural response behavior of the dynamic systems under random sea wave loads but because of necessity to analysis the offshore systems for extensive time to fatigue study it is important to use of simple stable methods for numerical integration. The modified Euler method (MEM) is a simple nume...

Journal: :international journal of environmental research 2011
a. ataei k.s. lee j.j. lim m.j. kim h.b. liu

in this paper, we introduce environmental systems engineering (ese) and describe some of its applications combined with process systems engineering (pse) to problems related to environmental systems. these systems—the water cycle and ecosystem cycles—are complex and highly dynamic, with an uncertainty level comparable to that of chemical systems. to illustrate the challenges of applying pse to...

Gholami, Amin, Naeimi Kia, Maliheh, Yaali, Rasoul,

The aim of this study was to determine the effect of weight transfer training on static and dynamic balance of older women. 20 accessible subjects that met our criteria divided randomly into two experimental and control groups. The experimental group trained for 6 weeks, 3 times a week and each session 60 minutes a day. Biodex balance system used for training and testing procedures. Data analys...

پایان نامه :موسسه آموزش عالی غیر دولتی و غیرانتفاعی علامه محدث نوری (ره) - پژوهشکده اقتصاد 1393

dynamic assessment according to vygotskys sociocultural theory, states that instruction and assessment are interrelated. using static forms of assessment with second and foreign language students could do more harm than good. many teachers neglect to take account of the complexity involved in learning a second or foreign language and often wonder why learning of a language take so long. thi...

H. Nahvi and M. Sobhani,

In this paper, dynamic and stability analysis of a flexible cam-follower system is investigated. Equation of motion is derived considering flexibility of the follower and camshaft. Viscous and Coulomb frictions are considered in the rocker arm pivot. The normalized equation of motion of the system is a 2nd- order differential equation with periodic coefficients. Floquet theory is employed to s...

Increasing the number of cores in order to the demand of more computing power has led to increasing the processor temperature of a multi-core system. One of the main approaches for reducing temperature is the dynamic thermal management techniques. These methods divided into two classes, reactive and proactive. Proactive methods manage the processor temperature, by forecasting the temperature be...

Journal: :journal of ai and data mining 2016
y. vaghei a. farshidianfar

in recent years, underactuated nonlinear dynamic systems trajectory tracking, such as space robots and manipulators with structural flexibility, has become a major field of interest due to the complexity and high computational load of these systems. hierarchical sliding mode control has been investigated recently for these systems; however, the instability phenomena will possibly occur, especia...

Evolving models have found applications in many real world systems. In this paper, potentials of the Evolving Linear Models (ELMs) in tracking control design for nonlinear variable structure systems are introduced. At first, an ELM is introduced as a dynamic single input, single output (SISO) linear model whose parameters as well as dynamic orders of input and output signals can change through ...

A Bagheri, M Hasanlu

Neutralization of external stimuli in dynamic systems has the major role in health, life, and function of the system. Today, dynamic systems are exposed to unpredicted factors. If the factors are not considered, it will lead to irreparable damages in energy consumption and manufacturing systems. Continuous systems such as beams, plates, shells, and panels that have many applications in differen...

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