1. Welcome 2. BIG BANG 3. CONTENTS Introduction History Time line FLRW Metric Horizons Observational evidence Features & problems The Future 4. INTRODUCTION “ Big-bang…

Information Security Introduction Attacks, services and mechanisms Security attacks Security services Methods of Defense A model for Internet work Security Attacks, Services…

1. DARK MATTER Dark Energy 2. CONTENTS:  Introduction i. Dark matter ii. Dark Energy  Distribution of matter  Dark matter models  Candidates of dark matter i.…

Slide 1The complete history of the Universe (abridged) The Big Bang and the Cosmic Microwave Background (With thanks to Angela Taylor)Sutton Trust Summer School 2005 Keith…

1. Cryptography and Network Security Third Edition by William Stallings Lecture slides by Lawrie Brown 2. Chapter 2 –Classical Encryption Techniques Many savages at the…

CSCE 815 Network Security Lecture 3 Data Encryption Standard (DES) Outline Review classical cryptography ± ± ± ± ± ± Monoalphabetic Ciphers cryptanalysis using letter…

1. CS595-Cryptography and Network Security Cryptography and Network Security Xiang-Yang Li 2. CS595-Cryptography and Network Security 3. CS595-Cryptography and Network Security…

1. How Fast the Universe Expanding? There are a lot of changes happens to the universe. Based on the study of the NASA the expansion or contraction happens to the universe…

1. The Big Bang Theory: Origin & Evolution of the Universe Hally Stone UB PASI 2010 2. Newton’s Static Universe • Universe is static and composed of an infinite number…

A few historical cipher systems David Kahn, “The code breakers” (1996) Symmetric Encryption or conventional / private-key / single-key sender and recipient share a common…