نتایج جستجو برای: dynamic stability
تعداد نتایج: 688430 فیلتر نتایج به سال:
In this paper, considering all the linear and nonlinear inertia terms of moving masses on a flexible beam, the dynamic response and dynamic stability of the beam are studied. Homotopy perturbation method is used to perform the analysis and results are provided in a stability map for the different values of mass and velocity of the moving masses. It is concluded that there is a borderline in the...
Introduction: Balance is one of the most important factors regarding physical fitness and is also considered a basic element in controlling the posture and in carrying out sports skills. Thus the purpose of this study was to investigate the influence of the eight weeks of jumping training on balance and core stability of female. Methods: Static and dynamic balance and core stability of 40 he...
Purpose: Recently, the Functional Movement Screen (FMS) and Y Balance Tests are used to assess the key movement patterns, dynamic stability and to identify individuals at high risk of injury. But, there are few studies to assess the relationship between the FMS test and Y Balance Test. This study aimed to assess the relationship between dynamic stability and the FMS test. Methods: The subjects...
The accelerating fields (e. g. centrifugal acceleration and constant acceleration) can change the physical performance of nano-sensors significantly. Herein, a new size-dependent model is developed to investigate the scale-dependent dynamic behavior of nanowire-fabricated sensor operated in an accelerating field. The scale-dependent equation of motion is developed by employing a consolidation o...
Introduction: Musculoskeletal disorders of the neck and shoulders are the most common reported complaints in sitting occupations such as dentistry. These disorders, in addition to create pain, can cause the impairment of postural control mechanisms. The aim of this study was to investigate the relationship between the postural stability disorder and the forward head posture (FHP) in the dentist...
Purpose: People who have Down Syndrome (DS) usually have deficiencies in muscular strength, muscular endurance, the development of motor skills, postural control, and gait cycle. These muscular and balance deficits impair daily living activities in people with DS; therefore, attention to improving these factors in various recreational environments seems necessary. Thus, the present study aimed ...
This paper investigates the stability analysis of fuzzy relational dynamic systems. A new approach is introduced and a set of sufficient conditions is derived which sustains the unique globally asymptotically stable equilibrium point in a first-order fuzzy relational dynamic system with sumproduct fuzzy composition. This approach is also investigated for other types of fuzzy relational composit...
it is definitely necessary to understand the concept and behavior of causation of life insurance policies and its determinants for insurance managers, regulators, and customers. for insurance managers, the profitability and liquidity of insurers can be increasingly influenced by the number of causation through costs, adverse selection, and cash surrender values. therefore, causation is a materi...
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