Depressive anxiety and dissociative disorders
The DSM is organized by combining disorders of the same category. What are the symptomatic similarities that necessitate the clustering of these disorders? Select one class of disorders (depressive, anxiety, dissociative, etc.) and discuss.
Distinguish between the different types of terrorism
Question 1
Briefly define four types of security. Discuss the similarities and differences that exist between the types of threats associated with each type of security and the security measures implemented to address the threats associated with each type of security discussed.
Your response should be a minimum of 200 words in length.
Question 2
Distinguish between the different types of terrorism. Briefly outline the government response to terrorism. Thoroughly discuss the difficult trade-offs that arise when combating terrorism. Include examples of the trade-offs discussed.
Estimate the hydraulic conductivity
Estimate the hydraulic conductivity
Civil Engineering
An excavation is made for a canal that is fed by a stream, as shown in Figure
P6.12. The measured flow into the canal is 0.25 × 10-4 m3 /s per unit area. Two
pore water pressure transducers, A and B, placed along a line parallel to the slope
and approximately at the canal mid height gave readings of 3 kPa and 2.5 kPa.
Assuming flow parallel to the slope, estimate the hydraulic conductivity.
Find the equation of elastic curve by successive integration
Find the equation of elastic curve by successive integration
Civil Engineering
1. A simply supported beam has a concentrated downward force P at a distance of a
from the left support, as shown in the figure below. The flexural rigidity EI is
constant. Find the equation of the Elastic Curve by successive integration.
1657_img1.png
2. Determine the rotations at A and B due to an applied moment MB on the beam, as
shown in the figure below. Use the Method of Virtual Work.
452_img2.png
3. Find the strain energy stored per unit volume for the materials listed below
when they are axially stressed to their respective proportional limits.
Material
Proportional Limit (N/mm2)
Modulus of Elasticity Proportional Limit (N/mm2)
Mild Steel
247
2.06 x 105
Aluminium
412
7.20 x 104
Rubber
2.06
2.06
4. As shown in the figure below, find the downward deflection of the end C caused
by the applied force of 2 kN in the structure. Neglect deflection caused by shear.
Let E = 7 x 107 kN/m2.
750_img4.png
5. For the loaded beam, as shown in the figure below, determine the magnitude of
the counter weight Q for which the maximum absolute value of the bending moment is
as small as possible. If this beam section is 150 mm x 200mm, determine the maximum
bending stress. Neglect the weight of the beam.
527_img5.png
6. A wooden beam with sectional dimensions of 150 mm x 300 mm, carries the loading
as shown in the figure below. Determine the maximum shearing and bending stress for
the beam.
1809_img6.png
7. For the box beam shown in the figure below, determine the maximum intensity w of
the distributed loading that can be safely supported if the permissible stresses in
bending and shear are 10 N/mm2 and 0.75 N/mm2 respectively.
2188_img7.png
8. A beam of rectangular section 450 mm wide and 750 mm deep has a span of 6
metres. The beam is subjected to a uniformly distributed load of 20 kN per metre
run (including the self-weight of the beam) over the whole span. The beam is also
subjected to a longitudinal axial compressive load of 1500 kN. Find the extreme
fibre stresses at the middle section span.
9. A hollow alloy tube 5 metres long with external and internal diameters equal to
40 mm and 25 mm respectively, was found to extend by 6.4 mm under a tensile load of
60 kN. Find the buckling load for the tube when it is used as a column with both
ends pinned. Also find the safe compressive load for the tube with a Factor of
Safety of 4.
10. A cantilever beam of length l carrying a distributed load varies uniformly from
zero at the free end to w per unit run at the fixed end. Find the slope and
downward deflection of the free end B.
739_img10.png
Compute the maximum acceptable tensile load
Compute the maximum acceptable tensile load
Civil Engineering
Compute the maximum acceptable tensile load Pu, on an angle L6x4x3/4 when connected
to both legs. The 4 in. leg contains a single gage line of 7/8in. diameter bolts,
and the 6in. leg contains a double gage line of 7/8in. diameter bolts. Assume no
stagger of bolts, and all bolts participate in carrying load. Solve for (b) A572
Grade 50 steel.
What is station and elevation of the lowest point on curve
What is station and elevation of the lowest point on curve
Civil Engineering
An equal tangent vertical curve conects an initial grade of -3% and a final grade
of +1% and is designed for 60mi/h. The PVI is at station 250+50 and elevation 732
ft. What is the station and elevation of the lowest point on the curve?
What is station and elevation of the lowest point on curve
What is probability that clearance meets the specifications
What is probability that clearance meets the specifications
Civil Engineering
A cylindrical hole is drilled in a block, and a cylindrical piston is placed in the
hole. The clearance is equal to one-half the difference between the diameters of
the hole and the piston. The diameter of the hole is normally distributed with a
mean 15 cm and standard deviation 0.025 cm, and the diameter of the piston is
normally distributed with mean 14.88 cm and standard deviation 0.015 cm.
(a) Find the mean clearance.
(b) Find the standard deviation of the clearance.
(c) What is the probability that the clearance is less than 0.05 cm?
(d) Find the 25th percentile of the clearance.
(e) Specifications call for the clearance to be between 0.05 and 0.09 cm. What is
the proba
bility that the clearance meets the specification?
(f) It is possible to adjust the mean hole diameter. To what value should it be
adjusted so as to maximize the probability that the clearance will be between 0.05
and 0.09 cm?
You are the chief civil engineer for the enhanced
You are the chief civil engineer for the enhanced
Civil Engineering
You are the Chief Civil Engineer for the Enhanced Protein Production Plant on the
planet Zog where the gravitational constant is 15 ft/s2. A protein storage tank has
developed a structural problem and must be drained. There is a 6 inch diameter
orifice near the bottom of the tank that can be opened, which will allow a free
discharge (Torocelli experiment) of the liquid protein from the tank. You estimate
that the coefficient of discharge (CD) for this orifice is 0.5. The tank is a
truncated cone whose diameter is 15 ft at the centerline of the orifice and 5 ft at
the top of the tank which is 10ft above the orifice and the tank is completely full
. Estimate the time, in minutes, required to drain the tank to the level of the
orifice.
How to estimate the concentration of a in the reservoir
How to estimate the concentration of a in the reservoir
Civil Engineering
Wastewater of a town is directly discharged into a reservoir, which has a volume of
50*106 m3. The retention time of the reservoir water is 2 years. The 350 residents
of the city, each generate an average of 70 kg/year of contaminant A, all of which
is discharged into the reservoir with the town’s wastewater. The rate constant for
decay of contaminant A in the reservoir is k=1.5 (1/year). Assuming the population,
discharge rate, and reservoir conditions have been stable for a long time, estimate
the concentration of A in the reservoir.
Explain the slipping of atoms and the effect on material
Explain the slipping of atoms and the effect on material
Civil Engineering
1.A 300 acre parking lot has a runoff coefficient of 0.8 and a time of
concentration of 40 minutes. Using the rational method (Q=CIA), what is peak Q if a
4″/hr rain falls for 10 minutes?
2.Coal has about 2% sulphur. how many kilograms of sulphur would be emitted from
coal fired power plants in the united states in 1 year?(u.s electricity production
is about 0.28*10^12 watts and coal has an energy content of about 30*10^6 j/kg.
note that 1j=1w-sec)
3.Explain the slipping of atoms and the effect on material deformation.
4.Brine flood in a 1.9-in-long and 1.5-in-diameter core plug from the North Sea
resulted in a stabilized pressure drop of 46.05 psi. The flood was carried out at
0.05 mL/min with brine viscosity of 0.443 cP. Determine the absolute permeability
of this plug in millidarcies.