Recent content by Yo388

I think this has to do something with the dummy node? Because when we put the dummy demand, technically all supply is being used up. But in actuality its not as the excess is going to the dummy. I think if i can figure out which generator is sending the excess to dummy, that's probably the...

Here it is again

"struggled" with it a little bit and this is what i came up with. I think my constraints are right now. For the transshipped problem, if for example i made 12000 hours at node 2 and sent 1000 to node 1, 5000 to node 6, 6000 to 3 , and 1000imaginary hours to the dummy node. If I need to...

If I replace all undirected arcs by two oppositely oriented ones, wouldn't those just cancel out in the constraints? Regarding the issue of distinguishing between transhipped and generated power, that's the part I am most confused about. Also, i was wondering if I put a dummy node wouldn't...

Homework Statement Consider a power grid consisting of electricity producers that are connected to consumption points on the grid. The consumption points are affiliated with regional retail power companies that then distribute the power to their end users. The undirected graph (attached)...

Ya i know the first way as its stated in the textbook but the way the question is being asked to be done is how you stated in (2). So if I replace |x2| in this case by z and add the two constraints like you said, what i am wondering is what do the x2 and -x2 mean in the constraints because they...

Hey Ya sorry I just noticed as well that I made a mistake. Theres no x3,I meant x2. Anyways , you the way you have said I already know how to do. But the reason I am confused is that the question asks that the aforementioned observation be used in answering the question. P.S I can't seem to...

Homework Statement Here is an alternative approach to handling absolute value terms as the decision variables: abs(x) is the smallest value z that satisfies x \leq z and -x \leq z. Using this,convert the following into a lp Min 2x1 + 3abs(x2) S.T x1 + x2 \geq 6 Homework Equations Here is a...

Homework Statement I have uploaded the problem here as a diagram is included http://img201.imageshack.us/i/questions.png/ Homework Equations Summation of forces =0 summation of moment=0 statics problem The Attempt at a Solution So basically what I am trying to do is break up the problem and...