Object Representation by Means of Nominimal Division Quadtrees and Octrees
Quadtree representation of two-dimensional objects is performed with a tree that describes the recursive subdivision of the more complex parts of a picture until the desired resolution is reached. At the end, all the leaves of the tree are square cells that lie completely inside or outside the object. There are two great disadvantages in the use of quadtrees as a representation scheme for objects in geometric modeling system: The amount of memory required for polygonal objects is too great, and
Author(s): Ayala, D., P. Brunet and Juan (et al)

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Rounding Word Problem About Fish Food
This short video explains how to solve a word problem involving rounding and addition using a fish tank.  It is hard to hear the original word problem when the students read it out loud.  The students in the video show to steps necessary to correctly complete the problem.

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Antenna Design and Measurement Techniques
The aim of this short course is to familiarize students with antennas, in a quite practical way. Students will acquire knowledge about all the main aspects of designing and measuring antennas. The course is divided into two different parts: Antenna Design and Antenna Measurement (course main topics). Students are also going to be taught about Smart antennas and signal processing with antennas (special topic, with invited professors). In the Antenna Design Part, students are going to deal with
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Copyright 2009, by the Contributing Authors

Brief Overview of William Shakespeare
This video clip starts with a quote from one of his plays. Learn about the life of Britain's famous bard and writer of plays, William Shakespeare. (01:31)
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Electrical Switches, Part 3, Pushbutton and Selector Switches
This five-minute video describes pushbutton switches and selector switches, including different configurations and terminology.
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Virtual Maths, Shapes, Space and Measure, Demonstration of a Theodolite Survey in action
Using a theodolite to calculate the height of a building, demonstration 'in the field', includes interactive simulation tools and formulae
Author(s): Leeds Metropolitan University

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How Ideas Take Flight - Jennifer Aaker (Stanford GSB)
Stanford Graduate School of Business professor Jennifer Aaker shares the power behind creating ideas that can build momentum. Through her research on the perception of happiness and meaning, Aaker describes how these concepts relate to a successful and powerful social media campaign. A well-planned effort catches audience attention and offers them an engaging story. Aaker, co-author of The Dragonfly Effect, also offers several personal and corporate examples of effective viral campaigns that gar
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How to Properly Hold a Xylophone Mallet
This video will teach you how to properly hold your xylophone mallet.
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Song - Move Your Body, by Hi 5
The live action video shows group Hi 5 singing and dancing.  The song names the parts of the body and kids in the studio imitating the movements. (1:59)
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CAD Creativeness
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Author(s): Asanowicz, Aleksander and Sawicky, Bogumil (Eds.)

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#292: Prey for the oceans: How marine predators influence reef ecology

Marine biologist, Prof Robert Warner, discusses the relationship between marine predators and their prey. He also explains why marine environments may be more robust than terrestrial ecosystems in the face of human impacts. Presented by Dr Dyani Lewis.

Author(s): up-close@unimelb.edu.au (University of Melbourne)

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Harmonie dans l'univers : entre science et musique (Vidéo)

Conférence de l'Institut d'Astrophysique de Paris présentée par Jean-Philippe Uzan (astrophysicien à l'IAP, directeur adjoint de l'Institut Henri Poincaré), le 7 janvier 2014.


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The Future of East Timor
In his first visit to Australia as Prime Minister of Timor-Leste, Dr Jose Ramos-Horta discusses the current political situation in his country. Dr Ramos-Horta, a Nobel Peace Prize laureate and accomplished diplomat, was handed one of the biggest challenges of his life on 10 July 2006, he became Timor-Leste’s second Prime Minister. He came to the position amid high expectations that he restore political stability, reconstitute the security forces, promote development, eradicate corruption a
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Termodinámica Aplicada
La asignatura de Termodinámica Aplicada pertenece a la materia de Ingeniería Energética. Después de cursar esta asignatura los alumnos deberán alcanzar un conocimiento de los conceptos elementales de la Termodinámica. Deberán ser capaces de aplicar los conocimientos básicos de la profesión relacionados con el análisis de sistemas térmicos y energéticos, es la base a utilizar para el desarrollo de otras competencias dentro del campo de la ingeniería térmica en la industria. Se fomen
Author(s): Joaquín Zueco Jordán

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Fisica II
El conocimiento y uso del método científico y sus valores se consideran de vital importancia para que el Ingeniero desarrolle su actividad profesional con el rigor adecuado.En este contexto, la asignatura de Física II se plantea como una introducción a los conceptos y leyes básicas para la descripción de la óptica, las ondas y las interacciones electromagnéticas. Este bagaje es imprescindible a la hora de afrontar las competencias que se exigirán al futuro profesional en cursos superior
Author(s): Esther Jódar Ferrández

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WWI Firsts (1:18)
WWI may have been the war to end all wars, but it was also the beginning of many military and civilian technologies. This 1:18 animation has some excellent statistics and other facts that are not well known and can help students better understand this war.
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Cold War: The Wall Comes Down - part 1/5
Part 1 of 5 about the Berlin Wall and its impact and significance during the Cold War.

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Kladifko, R., Li, J., and Dunlap, J. (October 2011). The School Principal: A Tough Job with Few Ta
Robert Kladifko, Jinyi Li, Jody Dunlap
An ever-challenging and increasing dilemma facing schools is finding qualified individuals who are willing to take school leadership positions. This s

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Joost Hiltermann on Iraq on the Edge

Joost Hiltermann speaks with Nathan Thrall about the political crisis facing Iraq as it prepares for parliamentary elections in 2010 and the final withdrawal of all American troops by the end of the following year.


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17.407 Chinese Foreign Policy (MIT)
This lecture course provides students with a comprehensive introduction to the international relations of the People’s Republic of China. China’s foreign relations during the Cold War as well as contemporary diplomatic, security and economic issues will be examined to identify and explain China’s foreign policy goals and their implementation since 1949. Throughout, this course will investigate the sources of conflict and cooperation in China’s behavior, assessing competin
Author(s): Fravel, M. Taylor

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative C