Rising radiosonde The National Weather Service releases approximately 70,000 radiosondes every year to collect data from the atmosphere. Attached to a balloon, a radiosonde rises at about 1000 ft/mm until the balloon bursts in the upper atmosphere Suppose a radiosonde is released from a point 6 ft above the ground and that 5 seconds later, it is 83 ft above the ground Let f ( t ) represent the height (in feet) that the radiosonde is above the ground t seconds after it is released. Evaluate f ( 5 ) − f ( 0 ) 5 − 0 and interpret the meaning of this quotient.
Rising radiosonde The National Weather Service releases approximately 70,000 radiosondes every year to collect data from the atmosphere. Attached to a balloon, a radiosonde rises at about 1000 ft/mm until the balloon bursts in the upper atmosphere Suppose a radiosonde is released from a point 6 ft above the ground and that 5 seconds later, it is 83 ft above the ground Let f ( t ) represent the height (in feet) that the radiosonde is above the ground t seconds after it is released. Evaluate f ( 5 ) − f ( 0 ) 5 − 0 and interpret the meaning of this quotient.
Rising radiosonde The National Weather Service releases approximately 70,000 radiosondes every year to collect data from the atmosphere. Attached to a balloon, a radiosonde rises at about 1000 ft/mm until the balloon bursts in the upper atmosphere Suppose a radiosonde is released from a point 6 ft above the ground and that 5 seconds later, it is 83 ft above the ground Let f(t) represent the height (in feet) that the radiosonde is above the ground t seconds after it is released. Evaluate
f
(
5
)
−
f
(
0
)
5
−
0
and interpret the meaning of this quotient.
8d6 عدد انباء
Q/ Design a rectangular foo
A
ing of B-2.75m to support a column of
dimensions (0.46 x 0.46) m, dead load =1300kN, live load = 1300kN,
qa-210kPa, fc' 21 MPa, fy- 400 MPa.
=
Q1/ Two plate load tests were conducted in a C-0 soil as given belo
Determine the required size of a footing to carry a load of 1250 kN for the
same settlement of 30 mm.
Size of plates (m) Load (KN) Settlement (mm)
0.3 x 0.3
40
30
0.6 x 0.6
100
30
Qx 0.6z
The OU process studied in the previous problem is a common model for interest rates.
Another common model is the CIR model, which solves the SDE:
dX₁ = (a = X₁) dt + σ √X+dWt,
-
under the condition Xoxo. We cannot solve this SDE explicitly.
=
(a) Use the Brownian trajectory simulated in part (a) of Problem 1, and the Euler
scheme to simulate a trajectory of the CIR process. On a graph, represent both the
trajectory of the OU process and the trajectory of the CIR process for the same
Brownian path.
(b) Repeat the simulation of the CIR process above M times (M large), for a large
value of T, and use the result to estimate the long-term expectation and variance
of the CIR process. How do they compare to the ones of the OU process?
Numerical application: T = 10, N = 500, a = 0.04, x0 = 0.05, σ = 0.01, M = 1000.
1
(c) If you use larger values than above for the parameters, such as the ones in Problem
1, you may encounter errors when implementing the Euler scheme for CIR. Explain
why.
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.
Differential Equation | MIT 18.01SC Single Variable Calculus, Fall 2010; Author: MIT OpenCourseWare;https://www.youtube.com/watch?v=HaOHUfymsuk;License: Standard YouTube License, CC-BY