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Title          
GRASP Lab UPenn 
   
 
Abstract
This video premiered at the TED2012 Conference in Long Beach, California on February 29, 2012. Deputy Dean for Education and GRASP lab member Vijay Kumar presented some of this groundbreaking work at the TED2012 conference, an international gathering of people and ideas from technology, entertainment, and design. Flying robot quadrotors perform the James Bond Theme by playing various instruments including the keyboard, drums and maracas, a cymbal, and the debut of an adapted guitar built from a couch frame. The quadrotors play this "couch guitar" by flying over guitar strings stretched across a couch frame; plucking the strings with a stiff wire attached to the base of the quadrotor. A special microphone attached to the frame records the notes made by the "couch guitar". These flying quadrotors are completely autonomous, meaning humans are not controlling them; rather they are controlled by a computer programed with instructions to play the instrume...
 
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Added By - A Ghosh
Subject - Computer Science
Document Type - Demonstration
Video Duration - moderate
 
 
 

 

Title          
Infinite loop in a software program 
   
 
Abstract
An infinite loop (also known as an endless loop or unproductive loop) is a sequence of instructions in a computer program which loops endlessly, either due to the loop having no terminating condition, having one that can never be met, or one that causes the loop to start over. In older operating systems with cooperative multitasking, infinite loops normally caused the entire system to become unresponsive. With the now-prevalent preemptive multitasking model, infinite loops usually cause the program to consume all available processor time, but can usually be terminated by the user. Busy-wait loops are also sometimes called "infinite loops". One possible cause of a computer "freezing" is an infinite loop; others include deadlock and access violations.
 
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Added By - A Ghosh
Subject - Computer Science
Document Type - Course Lecture
Video Duration - moderate
 
 
 

 

Title          
Most Influential Masters Thesis 
   
 
Abstract

Claude Elwood Shannon (April 30, 1916 – February 24, 2001) was an American mathematician, electronic engineer, and cryptographer known as "the father of information theory". Shannon is famous for having founded information theory with one landmark paper published in 1948. But he is also credited with founding both digital computer and digital circuit design theory in 1937, when, as a 21-year-old master's student at MIT, he wrote a thesis demonstrating that electrical application of Boolean algebra could construct and resolve any logical, numerical relationship. It has been claimed that this was the most important master's thesis of all time. Shannon contributed to the field of cryptanalysis during World War II and afterwards, including basic work on code breaking.

Shannon's Master's Thesis

 
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Added By - A Ghosh
Subject - Computer Science
Document Type - Documentary
Video Duration - moderate
 
 
 

 

Title          
Text Compression and Searchability in Compres... 
   
 
Abstract
In this paper, a new compression scheme for text is presented. The same is efficient in giving high compression ratios and enables super fast searching within the compressed text. Typical compression ratios of 70-80% and reducing the search time by 80-85% are the features of this paper. Till now, a trade-off between high ratios and searchability within compressed text has been seen. In this paper, we show that greater the compression, faster the search. This finds applicability in so many places where data as natural language text is present.
 
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Added By - udayan
Subject - Computer Science
Document Type - Interviews
Video Duration - moderate
 
 
 

 

Title          
Computer Hard Drive Components 
   
 
Abstract

Computer Hard Drive Components.

A hard disk drive (HDD), commonly referred to as a hard drive, hard disk, or fixed disk drive,[1] is a non-volatile storage device which stores digitally encoded data on rapidly rotating platters with magnetic surfaces. Strictly speaking, "drive" refers to a device distinct from its medium, such as a tape drive and its tape, or a floppy disk drive and its floppy disk. Early HDDs had removable media; however, an HDD today is typically a sealed unit (except for a filtered vent hole to equalize air pressure) with fixed media.[2]

HDDs (introduced in 1956 as data storage for an IBM  

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Added By - justin
Subject - Computer Science
Document Type - Demonstration
Video Duration - 00:01:06
 
 
 

 

Title          
Lecture: Probabilistic Methods in Computer Sy... 
   
 
Abstract
EE 465 Course on DEN: Review of probability; random variables; stochastic processes; Markov chains; and simple queueing theory. A hidden Markov model (HMM) is a statistical model in which the system being modeled is assumed to be a Markov process with unknown parameters, and the challenge is to determine the hidden parameters from the observable parameters. The extracted model parameters can then be used to perform further analysis, for example for pattern recognition applications. A HMM can be considered as the simplest dynamic Bayesian network. In a regular Markov model, the state is directly visible to the observer, and therefore the state transition probabilities are the only parameters. In a hidden Markov model, the state is not directly visible, but variables influenced by the state are visible. Each state has a probability distribution over the possible output tokens. Therefore the sequence of tokens generated by an HMM gives some information about the sequence of states. Hidden Markov models are especially known for their application in temporal pattern recognition such as speech, handwriting, gesture recognition, musical score following, partial discharges and bioinformatics.
 
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Added By - matlabuser
Subject - Computer Science
Document Type - Course Lecture
Video Duration - 01:22:14
 
 
 

 

Title          
Seth Lloyd's Quantum Computer 
   
 
Abstract
Professor Seth Lloyd talks about the world's smallest universe, quantum mechanics, quantum computers, and pushing Moore's Law beyond the capacity of the human brain. A quantum computer is any device for computation that makes direct use of distinctively quantum mechanical phenomena, such as superposition and entanglement, to perform operations on data. In a classical (or conventional) computer, information is stored as bits; in a quantum computer, it is stored as qubits (quantum bits). The basic principle of quantum computation is that the quantum properties can be used to represent and structure data, and that quantum mechanisms can be devised and built to perform operations with this data. http://en.wikipedia.org/wiki/Quantum_computer
 
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Added By - matlabuser
Subject - Computer Science
Document Type - Profile
Video Duration - 00:03:59
 
 
 

 

Title          
Hamiltonian Circuit and Travelling Salesman P... 
   
 
Abstract
Hamiltonian Circuit and Travelling Salesman Problem
 
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Added By - Ipshita Chakraborty
Subject - Computer Science
Document Type - White Board
Video Duration - 00:07:09
 
 
 

 

Title          
msaccess simple queries 
   
 
Abstract
An introduction to the construction of simple queries in Microsoft Access.
 
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Added By - Ipshita Chakraborty
Subject - Computer Science
Document Type -
Video Duration - 00:22:08
 
 
 

 

Title          
The stack data structure-Part 2 
   
 
Abstract
The stack data structure-Part 2
 
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Added By - pierce
Subject - Computer Science
Document Type - Demonstration
Video Duration - 00:05:46
 
 
 

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