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q3-soln

Course: CS 490, Fall 2009
School: Hendrix
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CSci Solutions, 490, Spring 2005, Quiz 3 1. Curved surfaces are most easily represented in most systems with a polygon approximation, but rendering the polygon surfaces shows sharp shading differences if the polygons are relatively large, destroying the illusion of curves. Gouraud shading strives to smooth out the shading by interpolating the color of each pixel based on the colors computed for the various...

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CSci Solutions, 490, Spring 2005, Quiz 3 1. Curved surfaces are most easily represented in most systems with a polygon approximation, but rendering the polygon surfaces shows sharp shading differences if the polygons are relatively large, destroying the illusion of curves. Gouraud shading strives to smooth out the shading by interpolating the color of each pixel based on the colors computed for the various vertices of each polygon. 2. For each row of the image, we select one of ve formats: Raw data, offset of pixel color relative to pixel to the left, offset of pixel color relative to pixel above, offset of pixel relative to average of the pixel to the left and pixel above, and offset relative to the complex Paeth prediction formula After choosing the format, we apply standard text compression to the resulting numbers. 3. The two major ones that I emphasized in class were reection off of rough surfaces or refraction through transluscent surfaces. Also, Monte Carlo path tracing automatically estimates secondary reections (i.e., surfaces receive illumination from light bouncing off of other surfaces), whereas standard ray tracing cannot handle this directly. 4. P2 P1 P3 P0 The important point here is that a natural cubic spline will go through all of the control points. 5. A straightforward detection collision system would need to check each object against all other object to see whether it collides with any of them. This is a O(n 2 ) approach. With the objects stored within an octtree, we would only need to check for collisions between objects intersecting the same cube of the octtree; as a result, the amount of time taken is likely to be closer to O(n). 6. The le dialog study addressed placement of components within the dialog box, showing that placing them along a line in the order they will be used leads to faster usage. The BellSouth study addressed reporting data in a narrative format versus a more structured summary format. It found that the more structured summary permitted testers to view problems with the instruments more readil...

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Hendrix - CS - 490
Solutions, Quiz 1, CSci 490, Spring 20051. 100 pixels. [The projection of the wall onto the screen would be 1/2 a foot, since the distance:height ratio would be the same both for the wall (40:10) and for the projection of the wall onto the screen (2
Hendrix - CS - 490
CSci 490, Spring 2005, Quiz 1Name: 1. [6 pts] Suppose we are performing a perspective projection onto a vertical screen one foot square which is one foot away from the eye. Eighty feet away in the same direction, there is a wall ten feet high. If th
Hendrix - CS - 490
Questions 1 Question Q21: (Solution, p 2) What is the motivation behind generalizing homogeneous coordinates to allow the last entry to be other than 1? Question Q22: (Solution, p 2) Explain the concept of Gouraud shading. Question Q23: (Solution, p
Hendrix - ASSN - 490
CSci 490, Spring 2005, Assignment 1This assignment, worth 40 points, is due at 3pm, Friday, January 28. Submit it by attaching your modied les to an e-mail to cburch@cburch.com. This assignment involves writing two important pieces to a rather sophi
Hendrix - ASSN - 490
CSci 490, Spring 2005, Assignment 3This assignment, worth 30 points, is due at 3pm, Friday, February 11. Submit it by attaching your modied les to an e-mail to cburch@cburch.com. From the Web page you can download a set of Java classes that implemen
Hendrix - ASSN - 490
CSci 490, Spring 2005, Assignment 6This assignment, worth 40 points, is due at 3pm, Friday, April 8. Submit it by attaching your modied les to an e-mail to cburch@cburch.com. You can download the base code from the course Web page, which implements
Hendrix - ASSN - 6
CSci 490, Spring 2005, Assignment 6This assignment, worth 40 points, is due at 3pm, Friday, April 8. Submit it by attaching your modied les to an e-mail to cburch@cburch.com. You can download the base code from the course Web page, which implements
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CSci 280, Spring 2009, Exam 1This take-home exam is due Friday, February 13, at 4pm. You should submit your solution on paper, either handwritten or typed. E-mailed solutions will not be accepted. Answer only four of the following ve problems. If yo
Hendrix - CS - 210
Questions 1 Question 8.11: (Solution, p 3) Name at least two generic purposes of an operating system. Question 8.12: (Solution, p 3) One way of receiving a response from a device is to poll it periodically about whether it has any additional informat
Hendrix - CS - 210
CSCI 210 Assn. 5: Caching effectsLab note: You may work with up to one other person on this assignment and submit your solution together, or you may work alone. The write-up is due at 5:00pm on Friday, April 30. It is worth 40 points.ObjectivesA
Hendrix - CS - 210
Questions 1 Question 131: (Solution, p 4) Describe the inputs and outputs of a (1-way) they relate.Question 132: (Solution, p 4) In implementing HYMNs control unit, the fetch cycle and the execute cycle each consisted of two clock phases: one phase
Hendrix - CS - 210
Solutions, Quiz 4, CSCI 210, Spring 20041. When skip is 16,384, each access to arr[i] in the inner loop maps to the same set of cache lines, the lines accessed at the beginning of the inner loop will be dropped from the cache as the inner loop conti
Hendrix - CS - 210
Questions 1 Question 7.31: (Solution, p 2) Describe the contents of the object le that is created by the compiler and subsequently given to the linker. Question 7.32: (Solution, p 2) Describe two advantages of dynamic linking (load-time or run-time)
Hendrix - CS - 210
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Hendrix - CS - 210
Quiz 4, CSCI 210, Spring 2004Name: 1. [10 pts] Tests on an Intel Pentium III processor reveal that the performance of the code at right depends heavily on the value of skip. skip 16,352 16,384 time 40 ms 480 msSurprisingly, with a larger value of
Hendrix - CS - 210
Questions 1 Question 6.41: (Solution, p 4) In class, we examined an alternative to using a stack for supporting subroutines, where each subroutine would have its own static memory locations for remembering data. For example, consider the following sq
Hendrix - CS - 210
Lab 8: ThreadsObjectivesto gain experience using threads in a program. to understand competitive and cooperative synchronization.You can run getcs to get a minimal template for this assignment, called PrimeCount.java. Write a Java program that
Hendrix - CS - 210
Lab 6: System callsObjectivesTo become more familiar with the Intel x86 assembly language. To practice the use of interrupts for initiating system calls to Linux. To learn about how parameters typed on a command line are given to a program unde
Hendrix - CS - 210
Quiz 3, CSCI 210, Spring 2004Name: 1. [8 pts] At right, complete the Java program so that it runs two threads. One thread should execute the following code to continually update. totalfor(int i = 1; true; i+) total += i; public class Counter extend
Hendrix - CS - 210
Final, CSCI 210, Spring 2004Name: 1. [5 pts] How many bits does a kilobyte contain? 2. [7 pts] Approximate in the form need not be normalized.) 3. [8 pts] In the following function, you can assume that place is a power of two. Complete the functi
Hendrix - CS - 150
Questions1Question Seq1: (Solution, p 2) Tabulate how the circuit at right changes as the input the inputs at left. 0 1 0 1 0 1 0 1 0 1 DQ QQ1 Q0DQ Qck ! ! ! Question Seq2: (Solution, p 2) Design a ci
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Hendrix - CS - 210
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Hendrix - CS - 210
Exam 1, CSCI 210, Spring 2004Name: 1. [10 pts] How would the behavior of the following two Unix shell commands differ?unix% grep open f &gt; wc unix% grep open f | wc2. [5 pts] Suppose we are using an 7-bit oating-point representation with 3 bits fo
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CSci 360, Fall 2004, Assignment 4This assignment, worth 35 points, is due Friday, October 1, at 5:00pm. To submit, attach your nal solution (as described below) to an e-mail sent to cburch@cburch.com. Your job in this project is to implement an expr
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Hendrix - CS - 360
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Hendrix - CS - 360
Quiz 3, CSCI 360, Fall 2004Name: 1. [7 pts] Give a lambda expression representing the composition function. That is, the function represented by your expression should take two functions f and g as arguments and return the composition of the two fun
Hendrix - CS - 360
Solutions, Final, CSCI 360, Fall 20041. public class Deadlock {Thread a; Thread b; public void runA() { synchronized(a) { synchronized(b) { System.out.println(&quot;Im A&quot;); } } } public void runB() { synchronized(b) { synchronized(a) { System.out.printl
Hendrix - CS - 360
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Hendrix - CS - 360
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Hendrix - CS - 360
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