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You are a computer forensics investigator for a law firm. The firm acquired a new client, a young woman

You are a computer forensics investigator for a law firm. The firm acquired a new client, a young woman who was fired from her job for inappropriate files discovered on her computer. She swears she never accessed the files.

What is the importance of documentation?
Why is preservation of evidence important to a criminal investigation?

Describe the different steps necessary to solve the discrete logarithm problem

Everything must be original on this one. 
The security of Diffie-Hellman relies on the difficulty of the discrete logarithm problem. This project describes attempts to determine what size primes are required for security. In particular, evaluate the secure identification option of the Sun Network File System, which uses Diffie-Hellman algorithm with a prime p of 192 bits.
Objectives
To describe the different steps necessary to solve the discrete logarithm problem (DLP).
To discuss the state-of-the-art results obtained for the solution of DLP.
Present the SUN NFS cryptosystem, and discuss some of its deficiencies.
Recommendations in order to have a secure size for the prime number p used in the Diffie-Hellman algorithm.
Your report should include
Abstract
Table of contents
Body of report
Conclusion
Page number in the textbook references
Glossary
Acknowledgments
Appendixes
When writing a report you should consider
Communicative quality
Ideas and organization
Grammar and vocabulary
Punctuation and spelling
Your report organization is very important. You should lay out ideas in logical order and build arguments piece by piece, grouping related ideas and sentences into paragraphs and paragraphs into sections.
Pay attention to your writing style
Use a natural language style
Avoid jargon, slang, and colloquial terms
Define technical terms
Avoid repetition and vague language
Be precise and specific
Use active rather than passive voice
Avoid presenting too many details and personal observations
Include signposts
Your report should not be less than 1,500 words in length (body of the paper) and should be submitted in MS Word, arial 12-pt font, with double spacing, and APA style.
Grading Criteria AssignmentsMaximum PointsMeets or exceeds established assignment criteria40Demonstrates an understanding of lesson concepts20Clearly presents well-reasoned ideas and concepts30Mechanics, punctuation, sentence structure, spelling, APA formatting.10Total100

New type of high load capacity of bearing seal discussion

In general, the bearing seals are even more important than the dust cover, and is limited by flexible rotation and a relatively low speed rotation. Designers in choosing a proper seal, the performance of the lubricant must be considered and transportation system and the desired working conditions.
For roll bearing in use to withstand high loading, strong impact, and rust particles and water invasion, NSK company developed a new type of high load capacity of the sealing type, clean roll bearing lubrication. It is said that the load capacity of the bearing can be increased by 34%, with a higher reliability, can be in bad lubrication conditions to work long hours. After its improved seal bearing performance, combine the optimization of mechanics principle design patent technology, new material and seals, and easy installation.
In ordinary sealed roller bearings, main seal and width limit the length of the roller, which limits the bearing load capacity. As a result, they in the new type roller bearing design, will keep frame file included in the seal gap, can make the roller is longer, so that maintains a diameter increased and the elongation of the roller and cage length does not increase, rising 34% basic load rating capacity, equivalent to extend bearing life 27 times. The bearing selection of high-quality “T – F bearing steel,” was the key to improve the bearing performance, because the material of impurities and uneven lubrication is the main cause of premature bearing failure.
Experience shows that under the condition of the pollution of the work, bearing inner into the debris, and these clastic particles can damage raceway, cause stress concentration. In addition, if the lubrication is not uniform, the metal rigid contact surface, tiny “peeling” damage, can also lead to the contact area of stress concentration, the two kinds of results to cause stress concentration areas of the metal surface and crack, and ultimately shorten the bearing life.
NSK company research shows that by changing the organization of the bearing steel, can improve the bearing under the condition of the pollution of impurities, or the working life of the edge of the lubrication condition, improve the ability of them to release the stress concentration on the edge.
However, one of the best practical protective measures are: when impurities appeared, just stop it. A new type of seal NSK the advantages of both the above two patents. This new type of hole type seal can not only solve the inhibition of form a negative pressure, prevent water from inside the bearing, the primary seal is not directly exposed to the water, from “breathing” in the water, and can play the function of impurity blocking in the groove.

Confidence Intervals and Chi Square discussion

<Note:
use right click on row numbers to insert rows to perform analysis below any
question>
For
question 3 below, be sure to list the null and alternate hypothesis
statements.  Use .05 for your
significance level in making your decisions.
 
 
 
 
 
 
For
full credit, you need to also show the statistical outcomes – either the
Excel test result or the calculations you performed.
 
 
 
 
 
 
 
 
 
 
 
 
1
One question we might
have is if the distribution of 
graduate and undergraduate degrees independent of the grade the
employee?
 
 
 
 
 
 
(Note: this is the same
as asking if the degrees are distributed the same way.)
 
 
 
 
 
 
Based on the analysis of
our sample data (shown below), what is your answer?
 
 
 
 
 
 
 
 
 
 
Ho: The populaton
correlation between grade and degree is 0.
 
 
 
 
 
 
Ha: The population
correlation between grade and degree is > 0

 
 
 
 
 
 
Perform analysis:
 
 
 
 
 
 
OBSERVED
A
B
C
D
E
F
Total
 
 
 
 
 
 
COUNT – M or 0
7
5
3
2
5
3
25
 
 
 
 
 
 
COUNT – F or 1
8
2
2
3
7
3
25
 
 
 
 
 
 
total
15
7
5
5
12
6
50
 
 
 
 
 
 
EXPECTED
 
 
 
 
 
 
7.5
3.5
2.5
2.5
6
3
25
<Highlighting each
cell with show how the value
 
 
 
 
 
7.5
3.5
2.5
2.5
6
3
25
is found: row total times
column total divided by
 
 
 
 
 
15
7
5
5
12
6
50
grand total.>
 
 
 
 
 
 
 
 
 
 
 
By using either the
Excel Chi Square functions or calculating the results directly as the text
shows, do we
 
 
 
 
 
 
reject or not reject the
null hypothesis?  What does your
conclusion mean?
 
 
 
 
 
 
Interpretation:
 
 
 
 
 
 
 
 
 
 
 
 
2
Using our sample data,
we can construct a 95% confidence interval for the population’s mean salary
for each gender.
 
 
 
 
 
 
Interpret the
results.  How do they compare with the
findings in the week 2 one sample t-test outcomes (Question 1)?
 
 
 
 
 
 
Males
Mean
St error
Low
to
High
 
 
 
 
 
 
52
3.65878
44.4483
59.5517
Results are mean
/-2.064*standard error
 
 
 
 
Females
38
3.62275
30.5226
45.4774
2.064 is t value for 95%
interval
 
 
 
 
 
<Reminder: standard
error is the sample standard deviation divided by the square root of the
sample size.>
 
 
 
 
 
 
Interpretation:

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3
Based on our sample
data, can we conclude that males and females are distributed across grades in
a similar pattern within the population?
 
 
 
 
 
 
 
 
 
 
 
 
4
Using our sample data,
construct a 95% confidence interval for the population’s mean service
difference for each gender.
 
 
 
 
 
 
Do they intersect or
overlap?  How do these results compare
to the findings in week 2, question 2?
 
 
 
 
 
 
 
 
 
 
 
 
5
How do you interpret
these results in light of our question about equal pay for equal work?
 
 
 
 
 
 
 
 
 
 
 
 

Forensics Report discussion

 
The security of Diffie-Hellman relies on the difficulty of the discrete logarithm problem. This project describes attempts to determine what size primes are required for security. In particular, evaluate the secure identification option of the Sun Network File System, which uses Diffie-Hellman algorithm with a prime p of 192 bits.
Objectives
To describe the different steps necessary to solve the discrete logarithm problem (DLP).
To discuss the state-of-the-art results obtained for the solution of DLP.
Present the SUN NFS cryptosystem, and discuss some of its deficiencies.
Recommendations in order to have a secure size for the prime number p used in the Diffie-Hellman algorithm.
Your report should include
Abstract
Table of contents
Body of report
Conclusion
Page number in the textbook references
Glossary
Acknowledgments
Appendixes
When writing a report you should consider
Communicative quality
Ideas and organization
Grammar and vocabulary
Punctuation and spelling
Your report organization is very important. You should lay out ideas in logical order and build arguments piece by piece, grouping related ideas and sentences into paragraphs and paragraphs into sections.
Pay attention to your writing style
Use a natural language style
Avoid jargon, slang, and colloquial terms
Define technical terms
Avoid repetition and vague language
Be precise and specific
Use active rather than passive voice
Avoid presenting too many details and personal observations
Include signposts
Your report should not be less than 1,500 words in length (body of the paper) and should be submitted in MS Word, arial 12-pt font, with double spacing, and APA style.
Grading Criteria AssignmentsMaximum PointsMeets or exceeds established assignment criteria40Demonstrates an understanding of lesson concepts20Clearly presents well-reasoned ideas and concepts30Mechanics, punctuation, sentence structure, spelling, APA formatting.10Total100

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