It depends On my what aspect you're looking at it from. According to the theories of population growth and resources, Malthus theory states that population growth will cause resources to deplete to a point where resources (earths carrying capacity) are unable to support the population resulting in the Malthusian crisis. When the crisis happens, there will be positive checks in place such as droughts an famines to lower the population until a sustainable number for resource usage. This is supported by many Neo Malthusian theories aka modern interpretations but one main fact is that this was said in the 18 century and back then it was simply an agrarian society.
Hence there was boserup's theory which was based on necessity is the Mother of invention ( I think I got this quote wrong) and that basically when population growth increase there will be more technology and improvements to society to increase resources available for usage. Which is largely supported by the high dependence on agriculture in agriculture and technological advancements over the years such as the green revolution and industrial revolution,
Ultimately I support Malthusian theory as it makes sense that no matter what, population will always be a liability in terms of resource usage.
The boundary layer thickness is usually defined as the distance from the wall to the point where the flow velocity reaches 99 % of the free stream value.
In the very thin boundary layer associated with free stream flows with high Reynolds numbers, a steep rise in velocity occurs perpendicular to the wall.
Boundary layer thickness = 0.37*Distance on x-axis/(Reynolds Number^(1/5))
δ = 0.37*x/(Re^(1/5))
This formula uses 3 Variables:
Variables Used
Boundary layer thickness - (Measured in Meter) - Boundary layer thickness is the distance normal to the wall to a point where the flow velocity has essentially reached the 'asymptotic' velocity.
Distance on x-axis - (Measured in Meter) - Distance on x-axis is the distance of point measured along x-axis form origin.
Reynolds Number - The Reynolds number is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities. A region where these forces change behavior is known as a boundary layer, such as the bounding surface in the interior of a pipe.
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D. A frame is a list of the individuals in the population being studied.
Premier Li Keqiang called for “mass entrepreneurship and innovation” and made it the leading agenda of China's national economic strategy. ... China has grown to become the world's second-largest economy in merely three decades, and entrepreneurship has been identified as a key driver of China's fast growth.
hope this helps
