Results 21 to 30 of about 80,358 (260)
Gravitational Interaction. A Conceptual Approach from Mechanics Perspective [PDF]
INCAS BulletinThe paper brings to attention the well-known interaction of gravity alongside the well-known property of inertia stated as in classical mechanical motion.
Sorin Stefan RADNEF
doaj +1 more source
Recognizing and understanding the inertia of innovation in knowledge-based companies; Fuzzy mapping analysis of antecedent and posterior factors with FCM [PDF]
مدیریت راهبردی دانش سازمانی, 2023 In the turbulent environment of today's world, if a company or organization does not have the ability to adapt to global changes and developments, it is doomed to collapse and destruction.
Reza Sepahvand +2 more
doaj +1 more source
Cooperative Control Strategy of Virtual Synchronous Generator Based on Optimal Damping Ratio
IEEE Access, 2021 Wind power, photovoltaics and other new energy sources are connected to the grid on a large scale. The power electronic interface cannot provide inertia and damping support for the microgrid.
Shengwei Qu, Zhijie Wang
doaj +1 more source
Numerical study on aerodynamic effects in passive pitching dynamics of insect flapping wings
Nihon Kikai Gakkai ronbunshu, 2014 This study is concerned with aerodynamic effects in passive pitching dynamics of insect flapping wings, which would be based on the Fluid-Structure Interaction (FSI). Thus, we evaluated them using three-dimensional numerical analyses for the FSI based on
Daisuke ISHIHARA +2 more
doaj +1 more source
Компьютерная оптика, 2022 Topography is the study of an area on the earth's surface. This term relates to the land's slope or contour, which is the interval of elevation differences between two adjacent and parallel contour lines. Topography generally presents a three-dimensional
P. Musa +4 more
doaj +1 more source
Energies, 2021 Power system inertia is an essential part of grid frequency control. The number of synchronously connected machines, which inherently provide inertia, is decreasing due to the transition to renewable energies.
Henning Thiesen, Clemens Jauch
doaj +1 more source
The Impact of Frequency Support by Wind Turbines on the Small-Signal Stability of Power Systems
Energies, 2022 Rising wind energy integration, accompanied by a decreasing level of system inertia, requires additional sources of ancillary services. Wind turbines based on doubly fed induction generators (DFIGs) can provide inertial and primary frequency support when
Antonio Pepiciello +2 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Nephrogenic rests (NRs) and nephroblastomatosis (NBM) are precursor lesions for development of Wilms tumor (WT). Their association with the risk of relapse has not been properly assessed, partly due to misunderstanding of their diagnostic criteria and terminology.
Gordan M. Vujanić +5 more
wiley +1 more source
IEEE AccessMicrovibrations of spacecraft are mainly generated by control moment gyroscopes (CMGs), which seriously reduces the effectiveness of spacecraft attitude control. Considerable work about vibration isolators has been conducted for isolating microvibrations
Lei Chen +5 more
doaj +1 more source