'Virginia computer science' diaporamas de présentation

David Evans cs.virginia/evans

Lecture 19: Authentication. David Evans http://www.cs.virginia.edu/evans. John Daugman, http://www.cl.cam.ac.uk/users/jgd1000/iriscollage.jpg. CS588: Cryptography University of Virginia Computer Science. How do you authenticate?. Something you know Password Something you have

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David Evans cs.virginia/evans

Lecture 22: Low-Level Programming in C. David Evans http://www.cs.virginia.edu/evans. CS201j: Engineering Software University of Virginia Computer Science. Menu. PS5 C Programming Language Pointers in C Pointer Arithmetic Type checking in C Why is garbage collection hard in C?. PS5.

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David Evans cs.virginia/evans

Class 22: Classy Complexity Classes. Office hours note: my office hours tomorrow will be 10-11am in my office. David Evans http://www.cs.virginia.edu/evans. PS6 (the last one) is posted now and will be due Thursday, April 24. cs302: Theory of Computation

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David Evans http://www.cs.virginia.edu/evans

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CS216: Program and Data Representation University of Virginia Computer Science Spring 2006 David Evans

CS216: Program and Data Representation University of Virginia Computer Science Spring 2006 David Evans. Lecture 10: *&!%[]++. http://www.cs.virginia.edu/cs216. C Bounds Non-Checking. > gcc -o bounds bounds.c > bounds abcdefghijkl s is: abcdefghijkl x is: 9 > bounds abcdefghijklm

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David Evans cs.virginia/evans

Class 14: Intractable Problems. David Evans http://www.cs.virginia.edu/evans. CS150: Computer Science University of Virginia Computer Science. Smileys Problem. Input: n square tiles

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David Evans cs.virginia/evans

Lecture 11: Parsimonious Parsing. David Evans http://www.cs.virginia.edu/evans. cs302: Theory of Computation University of Virginia Computer Science. Menu. Fix proof from last class Interpretive Dance! Parsimonious Parsing (Parsimoniously). PS3 Comments Available Today

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David Evans http://www.cs.virginia.edu/evans

Lecture 11: Parsimonious Parsing. David Evans http://www.cs.virginia.edu/evans. cs302: Theory of Computation University of Virginia Computer Science. Menu. Fix proof from last class Interpretive Dance! Parsimonious Parsing (Parsimoniously). PS3 Comments Available Today

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David Evans http://www.cs.virginia.edu/~evans

Lecture 14: Blocking and Catching Photons. David Evans http://www.cs.virginia.edu/~evans. CS551: Security and Privacy University of Virginia Computer Science. Menu. Visual Cryptography Identify your pictures Work in groups to think about problem on manifest Quantum Cryptography

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David Evans http://www.cs.virginia.edu/~evans

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David Evans cs.virginia/evans

Class 16: NP-Completeness / The Story so Far. David Evans http://www.cs.virginia.edu/evans. CS150: Computer Science University of Virginia Computer Science. Menu. 3SAT Complexity class NP-Complete The Story so Far Some NP-Complete Problems. Problem Classes if P ? NP:.

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David Evans cs.virginia/evans

Lecture 18: Important Undecidable Problems (and what to do about them). David Evans http://www.cs.virginia.edu/evans. cs302: Theory of Computation University of Virginia Computer Science. Menu. What does undecidability mean for problems real people (not just CS theorists) care about?

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David Evans http://www.cs.virginia.edu/evans

Lecture 18: Important Undecidable Problems (and what to do about them). David Evans http://www.cs.virginia.edu/evans. cs302: Theory of Computation University of Virginia Computer Science. Menu. What does undecidability mean for problems real people (not just CS theorists) care about?

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David Evans http://www.cs.virginia.edu/evans

Lecture 39: Lambda Calculus. David Evans http://www.cs.virginia.edu/evans. CS150: Computer Science University of Virginia Computer Science. Equivalent Computers. . z. z. z. z. z. z. z. term = variable | term term | ( term )

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David Evans http://www.cs.virginia.edu/evans

David Evans http://www.cs.virginia.edu/evans. M. C. Escher, Day and Night. Class 17: Mutation. CS200: Computer Science University of Virginia Computer Science. Menu. Mutation Primitives Programming with Mutation PS 5. From Lecture 3:. Evaluation Rule 2: Names.

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David Evans cs.virginia/evans

Lecture 17: Proving Undecidability. David Evans http://www.cs.virginia.edu/evans. cs302: Theory of Computation University of Virginia Computer Science. Proofs of Decidability. How can you prove a language is decidable ?. What Decidable Means.

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CS216: Program and Data Representation University of Virginia Computer Science Spring 2006 David Evans

CS216: Program and Data Representation University of Virginia Computer Science Spring 2006 David Evans. Lecture 15: Compression. http://www.cs.virginia.edu/cs216. Menu. Garbage Collection Puzzle Encoding: Huffman, LZW, GIF Representing Numbers. Fighting Finalizers.

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David Evans cs.virginia/evans

Lecture 8: Recursion Practice. David Evans http://www.cs.virginia.edu/evans. CS200: Computer Science University of Virginia Computer Science. Simpler Gauss Sum?. (define (insertl lst f stopval) (if (null? lst) stopval (f (car lst)

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