نتایج جستجو برای: static stability
تعداد نتایج: 403468 فیلتر نتایج به سال:
This paper presents a simple simulation approach to study static voltage stability in power systems. Symbolic and Optimization toolboxes in MATLAB are used to simulate load flow, continuation power flow and optimization techniques to easily assess and understand static voltage stability of power systems. P-V curves are constructed to calculate loadability margins. These margins are verified wit...
Background: Core stability is the ability of the lumbopelvic-hip complex to prevent spinal instability and return to equilibrium after a perturbation. The special physical condition in students and especially the female ones- makes them prone to Trunk Defects (TDs); thus, it makes them prone to numerous injuries, like problems in balance. The present study aimed to examine the effect of Core St...
Postural stability is an important measure in both research and clinical practice. A portable, easy to use device that can provide higher resolution than current clinical tests may allow for better identification of patients or athletes with postural stability deficits. The purpose of this study was to evaluate the ability of a tri-axial accelerometer to quantify postural stability in a healthy...
In this paper, the performance of two types of FACTS devices in order to enhance the power system static voltage stability has been investigated. These devices include Static Var Compensator (SVC) and Thyristor Controlled Series Capacitor (TCSC). The modeling of the Single Machine Infinite Bus (SMIB) and aforesaid devices has been made up in steady state mode with disregarding of the generator ...
Objectives: The purpose of this study was to investigate relationship between body composition indices with static and dynamic balance and rate of falling in active elderly people. Methods & Materials: This research was a correlation study. Active elderly women volunteered for participation in this research (n=45). Body composition indices (body fat mass, fat free mass, body mass index, wais...
To investigate the effects of gender on static and dynamic postural stability in community dwelling healthy older adults. Thirty men and 30 women older than 65 years participated in the study. They completed 4 balance tests, including one-legged stance test (OLST) with eyes open (EO), OLST with eyes closed (EC), Sharpened Romberg (SR) and Dynamic postural stability (Turn 180). Means of static a...
Abstract—Background: Diabetic sensorimotor polyneuropathy (DSP) is one of the most common microvascular complications of type 2 diabetes. Loss of sensation is thought to contribute to a lack of static and dynamic stability and increased risk of falling. Purpose: The purpose of this study was to compare the effects of low-level laser (LLL) and monochromatic near-infrared photo energy (MIRE) on p...
When a wheelchair user reaches and leans, the static stability decreases in the direction of the lean and increases in the opposite direction. The purpose of this study was to determine the extent of this effect. We studied 21 nondisabled subjects in a representative wheelchair, measuring the static forward, rear, and lateral stability on a tilting platform. Reaching and leaning away from the t...
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