... and describes depth. Z also adds the third dimension. A cylindrical arm also has three degrees of freedom, but it moves linearly only along the Y and Z axes. Its third degree of freedom is the rotation at its base around the two axes. The work envelope is in the shape of a cylinder. The spherical arm replaces up and down movements along the two axes with a rocking motion of the arm. The spherical arm's work envelope is a ... hole. Your arm would rotate around an axis that goes through the center of your wristbone. This motion is called roll. What a robot does is stated in its program. Th...

• Word Count: 2637
• Approx Pages: 11
• Grade Level: High School

... not for the parents, the kids would be fine The state does a fine job of allowing parents to screw up their kids. Children need a stable and nurturing environment and visiting mom and dad in the pen every two weeks is more damaging than the state will ever attempt to admit." --Bob Selby, Police Officer, Ames, IA The past 25 years the number of persons becoming ... depends on a large number of variables, including the age at which the parent-child separation occurs, length of the separation, health of the family, disruptiveness of the incarceration, child's familiarity with the placement ...

• Word Count: 3878
• Approx Pages: 16
• Has Bibliography
• Grade Level: Undergraduate