Real world well formulated examples of non linear optimization problems

Question

I'm trying to find around the web some real world examples of non linear optimization problems. I currently need examples of:

• Non restringed optimziation ( $\max$/$\min$ $f(x)$ for $x\in\mathbb{R}^{n}$ or with $x_{i}>0$)
• Lineary restringed optimization
• Quadratic optimization
• Convex optimization
• Separable optimization
• Non-convex optimization
• Geometric optimization
• Fraccional optimization
• complementary optimizacion

Also, any real-world example of optimization problem would be very much apreciated.

Answer 1

You might look at some of the case studies at http://www.neos-guide.org/ or browse the Optimization Online archive at http://www.optimization-online.org/