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Question #1. I can not
access the assignment. Can you help me?
Answer #1. The web page is up. I do not know why you could not access it. It is possible that you did not capitalize the first letter of Nikolaidis.html
You can find the assignment at
http://www.eng2.uconn.edu/~nikos/ce294ass1.html
Let me know if you have problems.
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Question #2. With solving the homework assigment of course CE-320, I have two questions.
1. Where I can find the world population data (for problem 2) ?
2. Could you teach us several widely used statistical criteria such as Chi-square test, Paired t-test and Linear least-square regression as introduced in example 1.3 of textbook ?
Answer #2.
1. You can find the population data in the library, probably under world population statistics or atlases.
2. You can follow the procedure outlined in the book, or you can use EXCEL to compute these statistics for your data. If you have trouble with interpreting the results you should come and see me.
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Question #3. How should we compare the observed with the modeled data?
Answer #3. Use the same statistics as in the book: chi^2, t-test, and r^2. Let me know if you have any questions.
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Question #4.
1. Should it be assumed that Lake Superior is marine
water?
2. Is it okay to assume that chromate is both chromium(hex)
and chromium(tri)?
3. Is the water quality criteria applicable to ground
water or is the human health criteria(which includes drinking
water MCL) just applicable to groundwater?
4. Are there any criteria for rainwater or should
I just assume that all the criteria applies to rain water also?
Answer #4.
1. I believe that Lake Superior is freshwater.
2. Chromate is hexavalent only.
3. I believe that the various State Ground Water
Protection Criteria involve both.
4. No. Use the Water Quality Criteria.
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Question #1. Do we need to get the maximum solubility
>for phenol (if so what type) and chromium? If not than what would Co equal to
>in the equation C = Co + ( C background - Co)
* erf(zeta).
Answer #1. No need to
find solubilities.
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Question #2. The question,
(C-Co)/(Cb-Co)=erf(X), was used to solve the problem. Co=1.5 mg/L(Initial
Conc.) Cb= 0 mg/L (Since no Phenol in clay layer in the begining)
C=0.01 mg/L ( When c > 0.01 mg/L, the Phenol Conc., in the
G.W., it is the time that the clay lechate will begin to contaminate
the G.W.) Is the solving philosophy correct ? If not, please give
a direction.
Answer #2. Cb = 0.01.
The contamination begins when C>0.01. You are on the right
track.
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Question #3. Would it
be possible to have homework assignments due on Friday morning
so that we could have a few minutes to ask questions during class
on Thursday? This might minimize repetition of the same question
and stimulate some discussion.
Answer #3. This is a great
idea. I'll change the due date of the assignments. Thank you.
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Question #1. Problem
1. In calculating the vertical dispersion coefficient, are we
to use the same value as the mean depth (D) for the depth of the
river (z)? If so then it would be zero.
Answer #1. z takes values from 0 to 10 m. So you can find the vertical distribution
of dispersion with depth. You can use increaments
of 1 m. Plot Ez vs Z.
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Instructor: Dr. Nikolaos P. Nikolaidis
Office: FLC Rm 318
e-mail: nikos@eng2.uconn.edu
Homepage: http://www.eng2.uconn.edu/cee/bio/Nikolaidis.html
Office Hours: Th 11:00
- 1:00 PM
Lecture: Th 8:00 - 11:00
AM, STORRS HALL 311
TA: Peg Engwall