what is bellman's principle?
364028
Richard Bellman made this principle in regards to a two-stage optimization to get V(t+s, x, φ)\n\n   Using any U up to a time t, with a controller U changes to an optimal one.   At time t+s we get a performance J(t,x,V(s,∙,φ),U).  If you take the supremum with respect to U you get V(t+s, x, φ)
102873
Archimedes Principle.  The bouyant force pushing up on an object in a fluid is equal to the weight of the fluid displaced by the object.  So as long as the ship displaces more than its weight in water, it will float.  This is why ships made of steel and other dense materials tend to be very big and hollow.
366270
I love this riddle, haven't seen it a while... quite simple :) okay its takes a while: $25 to hotel, $2 for bellboy in transit, $3 returned to the GUYS = $30. Each guy DID spend $27, plus the $2 bellman pocketed (tricky part is do not add but SUBTRACT!) they had no idea they're supposed to spend $25! should've stayed home, lol
730275
It's called 'impulse' and any good, lower division, physics book will have an explanation of what it is and how it works.\n\n\nDoug
230741
Newton's laws of motion.\nConservation of engery.\nConservation of momentum.
479068
I remembered this however, I couldn't be sure so I looked it up for you. is this economics 101, empirical evidence? well if so, here's something to get you pointed in the right direction. \n\nhttp://en.wikipedia.org/wiki/Principal-agent_problem\n\nHope this helps...\n\nKoop and Potter (1999) find evidence in favor of Hamilton s model using Bayesian techniques\nhttp://citeseer.ist.psu.edu/context/109357/0\n\nYou will also find Potter's e-mail address here:\nhttp://papers.ssrn.com/sol3/papers.cfm?abstract_id=67808\n\nGood luck.
458965
I don't know...his Three laws of Motion? Something about inertia that an object in motion must stay in motion until acted on by another force. Something like that.
302156
I think it is the same principle as when you take your car into the shop and suddenly nothing was wrong with it.  \n\n:)
1147597
Is that the same principle as two negatives making a positive?\nThen the answer would be yes.
478057
It is a montecalro method based on the markov chain process, where in you calculate the change in energy of the system and then generate a random number and if the random number is less than exp((-Energy)/T) then you accept a move,else the move is rejected, and T is the parameter which controls the randomness of the system
55798
do u mean the Le Chatelier's principle for chemical equilibrium? This principle states that: \n\nIf a chemical system at equilibrium experiences a change in concentration, temperature or total pressure the equilibrium will shift in order to minimize that change.\n\nThis is often used by chemists to increase yield of products. For example, in the reaction \n\n                   CO + 2H2 ↔ CH3OH\n\nIf we increase the amount of carbon monoxide, according to the principle, methanol yield will increase so as to decrease CO concentration.
689943
e) always EQUAL to\n\nmass of products = mass of reactants \n\nso mass is conserved i.e. remains the same.\n\nThe only reactions that "violate" this principle are nuclear reactions, where the matter 'lost' is converted into energy.
96913
Pascal's principle : Pressure applied to an enclosed fluid is transmitted undiminished to every part of the fluid, as well as to the walls of the container.  \nAn example: hydraulic lift.
228745
Check out the Bernoulli principle (try wikipedia).  That will explain all.
97749
There is no such thing as LAW OF SUPPLY AND DEMAND -- comparably to the LAW OF GRAVITATION (or Newton's Law) ... it is all being intercepted by governments and political parties.\n\nThese institutions are always thinking of their own "self-interest".
449795
For many, the Peter Principle (PP) was a revelation. For me too. I was, I realised, not, after all, the unique victim of bloody minded destiny. And neither are you. Our positions of oppression were, and are, produced by a natural law of the universe. Yes indeed. Someone had at last explained why it is that so many people in positions of authority seem to be incompetent. They are. In case you missed this gem of insight, let me recap. \n\nThe Peter Principle states that - \n\nIn a mature bureaucracy people are promoted to their own level of incompetence. \n\nWhen a person, working in a hierarchical bureaucracy, does his or her task competently, he or she will gain promotion to a higher post which is more demanding. If the person finds this new task beyond his or her capabilities he or she will then perform that task incompetently. No further promotion will be gained and the person will, from that moment on, be stuck in that post. The PP has about it the simple elegance of Darwin's theory of evolution. When it is explained, you see that it must be so and you wonder who you didn't think of it yourself. And yet ... it contains an insidious flaw. \n\nDeficiencies of the Peter Principle.\n\n(1) When a person is promoted (the promotEE), there has to be another person (the promotER) who does the promoting. The Peter Principle depends crucially upon the promoter's job being performed competently. The promoter must be able to distinguish competence from incompetence in candidates for promotion. So what happens if the promoter has already reached his or her level of incompetence? And there are other sources of error in the Peter Principle -\n\n(2) PP contains a hidden assumption that the difficulty of a task, at any level in a hierarchy, increases with increasing level. And we all know that that is not always true. The hardest task in any hierarchy is the one YOU are doing. Everyone else is getting a ride on your back especially the person who is just one level above you. \n\n(3) PP also assumes that there is only one kind of difficulty and only one kind of competence. Again not true. As predicted by the PP the best football players do not always make good managers but is it not also true that some of the best managers were indifferent players. Further - \n\n(4) PP predicts that when a person reaches their incompetence level they will be only marginally incompetent. The theory does not begin to explain the ubiquitous presence of super-incompetence. How, for example, can it explain how John Major became the British Prime Minister when he had already reached his incompetence level when he was a trainee bank clerk? So there has to be more. The PP may be a valuable insight, it may explain why so many people in high places are incompetent, but it not why they are so abysmally incompetent.
111866
The theory delves into concepts of predestination, predetermination, and free-will. It proposes that human beings, animals, and others are really not in control of their own lives. Rather, what we do, when we do it, and how we go about doing it are determined by a complex set of interactions provided by the environment, people around us, etc. It is not hard to imagine some machine or random algorithm controlling these interactions, much like AI in a video game (FEAR, call of duty II...).