as one of the most promising distributed generation (dg) sources, wind power technology has been widely developed in recent years. doubly fed induction generator (dfig) is currently employed as one of the most common topologies for wind turbine generators (wtgs). this generator operates as a synchronous/asynchronous hybrid generators. therefore, it is necessary to power engineers find understan...

Traditional slope stability analysis is limited to the use of single valued parameters to analyze a slope‟s characteristics. Consequently, traditional analysis methods yield single valued estimates for factor of safety of a slope‟s stability. However, the inherent variability of the soil characteristics which affect slope stability indicates that the stability of a slope is a probabilistic rath...

in this paper, the enhancement of vehicle stability and handling is investigated by control of the active geometry suspension system (ags). this system could be changed through control of suspension mounting point’s position in the perpendicular direction to wishbone therefore the dynamic is alternative and characteristics need to change. for this purpose, suitable controller needs to change mo...

The hydro turbine dynamics have a considerable influence on the dynamic stability of power system. In the study of dynamic stability, the system is modeled by the linear differential equations (small  signal analysis). Small signal stability of power systems is needed in all conditions and only is dependent on the conditions of power system performance before commotion occurrence. This paper pr...

in this study extract of olive leaf was added to butter samples at three concentrations, 0.05, 0.1 and 0.5% and after vaccum packaging, were kept in refrigerator for 90 days. acid and peroxide value, microbial culture , polyphenol content of samples ,hardness, oxidative stability, sensory characteristics of samples including flavor, textural and apparent characteristics of samples and dpph radi...

APrIl 2017 IZA DP No. 10696 The Temporal Stability of Children’s Neighborhood Experiences: A Follow-up from Birth to Age 15 Despite increasing attention being paid to the temporal dynamics of childhood disadvantage, children’s neighborhood characteristics are often measured at a single point in time. Whether such cross-sectional measures serve as reliable proxies for children’s long-run neighbo...

Persons with amblyopia, especially those with strabismus, are known to exhibit abnormal fixational eye movements. In this paper, we compared six characteristics of fixational eye movements among normal control eyes (n=16), the non-amblyopic fellow eyes and the amblyopic eyes of anisometropic (n=14) and strabismic amblyopes (n=14). These characteristics include the frequency, magnitude of landin...

We report a detailed analysis of atmospheric stabilities in the mesopause region (85–100 km) based on over 2,000 hr high-resolution temperature and horizontal wind measurements made with Na lidar at Andes Lidar Observatory, located Cerro Pachón, Chile (30.25°S, 70.74°W). The square Brunt–Väisälä frequency Richardson number are calculated, occurrence probabilities convective dynamic instabilitie...