نتایج جستجو برای: power takeoffs
تعداد نتایج: 487068 فیلتر نتایج به سال:
Urban air traffic has gradually attracted attention in recent years, which will bring endless vitality to future urban development. An objective and accurate method of assessing vertiport capacity is the basis for flow management UAVs, plays an important role improving efficiency airspace resources. First all, this paper establishes a theoretical calculation model ground facilities such as take...
after the soviet union dissolution, a chaotic period was begun in the russia. russia lost its glory and felt disgrace. the first group of elites came to power under yeltsin; they tried to re-define russia’s identity as a european country and build a foreign policy on this baseline. therefore russia tried to become closer with the west especially with the u.s. according to their view the sovie...
a note on character kernels in finite groups of prime power orde
A mathematical model of free balloon launches in windy conditions is based on the conservation linear momentum horizontal and vertical axes. Linear equations are represented by a set four nonlinear first-order ODEs. Some ODEs were solved analytically, while Riccati ODE with variable coefficients for acceleration was using numerical solvers. Transient aerodynamic lift drag caused slip flow over ...
In this study, we analyzed the relationship between ground reaction force (GRF) and both leg kinetics in kicking pullovers, with aim of clarifying mechanics techniques for acquiring vertical GRF moment single-leg takeoffs aerial rotation. applied to support foot kinematics were recorded takeoff phase successful pullovers by 11 adult males. Using a 12-segment, sagittal-plane rigid body link mode...
the speech act of disagreement has been one of the speech acts that has received the least attention in the field of pragmatics. this study investigates the ways power relations, social distance, formality of the context, gender, and language proficiency (for efl learners) influence disagreement and politeness strategies. the participants of the study were 200 male and female native persian s...
phatic communion is a cultural concept which differs across cultures. according to hofstede (2001), the u.s. tends to have individualistic culture; however, asian countries tend to have collectivistic cultures. these cultures view phatic communion differently. in individualistic cultures like u.s., phatic communion reflects speakers’ socio-cultural relationships in conversations. to see whether...
the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
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