# 4OR

4OR - A Quarterly Journal of Operations Research is a peer-reviewed scientific journal that was established in 2003 and is published by Springer Science+Business Media. It is a joint official journal of the Belgian,French, andItalian Operations Research Societies. The journal publishes research papers and surveys on the theory and applications of Operations Research.The Editors-in-chief are Yves Crama (University of Liège), Michel Grabisch (Pantheon-Sorbonne University), and Silvano Martello (University of Bologna). (Wikipedia).

What is the 4th Dimension REALLY? - 4D Golf Devlog #2

A more practical explanation for those interested in exploring 4D spaces. For those not already familiar with basic 4D concepts, here's some videos I can recommend: "Visualizing 4D Geometry" https://www.youtube.com/watch?v=4URVJ3D8e8k "The things you'll find in higher dimensions" https:/

From playlist 4D Golf

Spherical 4R mechanism 2c

Modification of "Spherical 4R mechanism 2a" and "Spherical 4R mechanism 2b". Because it is a combination of two spherical 4R joints, angles between line connecting two joint centers and the shaft axles must be set equal to each other in order to get constant velocity.

From playlist Mechanisms

4th dimension 'n stuff -- Day 5

alright, 4th dimension visualized! -- Watch live at https://www.twitch.tv/simuleios

From playlist 4d visualization

4Runner - Dreams

GOOD 4 WHEN UR DRIVING SOMEWHERE

From playlist Music.

4th dimension 'n stuff -- Day 1

alright, trying to visualize 4d. We'll see how this goes! -- Watch live at https://www.twitch.tv/simuleios

From playlist 4d visualization

4th dimension 'n stuff -- Day 4

alright, figured out some of this projection nonsense. Not all of it, but some of it... -- Watch live at https://www.twitch.tv/simuleios

From playlist 4d visualization

Spherical 4R mechanism 2d

Persian joint. It is a modification of "Spherical 4R mechanism 2c" by adding more connecting rods for balancing. Because it is a combination of two spherical 4R joints, angles between line connecting two joint centers and the shaft axles must be set equal to each other in order to get co

From playlist Mechanisms

Hubble Realms of Light 4K

Revel in some of the highest resolution images from the Hubble Space Telescope. Experience anew the detail in these inspiring images, snatched from distant galaxies, exploding stars, brilliant gas clouds, and black holes.

From playlist SpaceRip 4K

Ex 1: Factor a Sum or Difference of Cubes

This video provides and example of how to factor a sum or difference of cubes. Library: http://www.mathispower4u.com Search: http://www.mathispower4u.wordpress.com

From playlist Factoring a Sum or Difference of Cubes

Ex 2: Dividing Rational Expressions

This video provides examples on how to divide rational expressions. Library: http://mathispower4u.com Search: http://mathispower4u.wordpress.com

From playlist Multiplying and Dividing Rational Expressions

Ex: Function Arithmetic - Function Division (Dividing by a Monomial)

This video provides two examples of how to find the quotient of two functions. The examples involve dividing by a monomial.

From playlist The Properties of Functions

Ex 1: Rational Equation Application - Painting Together

This video provides an application problem using rational equations to determine how long it would take for two people to work together to paint a room. Library: http://mathispower4u.com Search: http://mathispower4u.wordpress.com

From playlist Solving Applications using Rational Equations

Ex 4: Evaluate a Natural Logarithmic Expression Using the Properties of Logarithms

This video explains how to expand a logarithmic expression in order to evaluate the expression based upon given values. Site: http://mathispower4u.com Blog: http://mathispower4u.wordpress.com

From playlist Using the Properties Logarithms

Why Do Dogs Shake to Dry Off?

Everyone loves a slow motion video of a dog shaking to dry off, but what is the science behind it? Host: Hank Green We're conducting a survey of our viewers! If you have time, please give us feedback: https://www.surveymonkey.com/r/SciShowSurvey2017 Hosted by: ---------- Support SciShow

From playlist Biology

Spherical 4R mechanism 2g

Persian joint. It is a modification of "Spherical 4R mechanism 2e" by adding more connecting rods for balancing. Because it is a combination of two spherical 4R joints, angles between line connecting two joint centers and the shaft axles must be set equal to each other (45 deg.) in orde

From playlist Mechanisms

Ex 3: Solve Logarithmic Equations

This video provides two basic examples of how to solve logarithmic equations. Library: http://mathispower4u.com Search: http://mathispower4u.wordpress.com

From playlist Solving Logarithmic Equations

Ex 1B: Solving a Trigonometric Equation with a Multiple Angle Using Substitution

This video solving a trig equation with a multiple angle using substitution. Reference triangles are used. Site: http://mathispower4u.com

From playlist Solving Trigonometric Equations

Ex 2: Find Composite Function Values With Fractions

This video provides several examples of how to determine composite function values. Site: http://mathispower4u.com

Spherical 4R mechanism 2e

Modification of "Spherical 4R mechanism 2a" and "Spherical 4R mechanism 2b". Because it is a combination of two spherical 4R joints, angles between line connecting two joint centers and the shaft axles must be set equal to each other in order to get constant velocity. Inventor files of t

From playlist Mechanisms

Ex 2: Determine the Function From the Graph of a Piecewise Defined Function

This video explains how to determine the function rule given the graph of a piecewise defined function. Site: http://mathispower4u.com Blog: http://mathispower4u.com

From playlist Graphing Functions (Algebra 1)