Research

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ColdFire M5271 Initialize 52Kb SRAM & allocate C-stack there to test DRAM at boot ?

Hello,Anybody (on any RTS) on ColdFire M5271 tried to initialize 52Kb SRAM &allocate C-stack there to test (using C-code) DRAM at the boot time ?See relevant info I found so far (but there the guy considersallocating stack on DRAM and jumping over it during DRAM test - anybodytried that ?)Newsgr...

0 answers | 8597 bytes |

Evaluation of heuristics

I have a heuristic algorithm (not randomized!) to find solutions in acombinatorial problem. What is the best way to prove/evaluate thealgorithm (correctness, completeness, perfomrance, average distance ofresults to global optimum).I thought about fitness landscapes, but my real-life-problem isNP...

3 answers | 543 bytes |

Algorithm for advanced planning, scheduling and Sourcing

Hi All,I am a manager in an apparel company near Noida, Delhi. Recently weare planning to implement enterprise wide Planning Scheduling,Sourcing and Critical Path Management Software for our apparel company.I really want to know about the algorithms used to develop suchsoftware. The purpose of t...

2 answers | 612 bytes |

College student considering operations research

Hi,I'm a college student who discovered operations research last year andhave been planning on majoring in it. I find it highly interesting. ButI'm not sure the discipline fits well with my strengths, and am thusconsidering majoring in pure math instead.I'm very good at discrete m...

10 answers | 1052 bytes |

Cplex Callable Library & Options for creating the problem

Hi,I am planning to use Cplex Callable Library to solve a subproblemnumerous times in an algorithm. I am coding the algorithm in C. Thesubproblem is an LP; but not a very basic one, due to a few complicatedconstraints such assh1(i,t) S1(i,t) =e= (d1(i)- Sum(tau$(ord(tau) leord(t)),Sum(r$(N(r,i)...

4 answers | 1679 bytes |

Graphical error analysis

Those familiar with the problems involved with error estimationwill appreciate the graphical error analysis performed on the Besselfunction (See web page below).Bessel functions' analytical and numerical characteristics are welldocumented (See A&S, G&R). When getting into the particularsof...

0 answers | 769 bytes |

MMU page-fault handling in RTOS embedded system

Hi all,I am new to this forum.anyone here has experience working with an MMU which handles page-faultin RTS embedded system?Is there a contradiction between page-fault handling (a case where notall the code is resident in RAM/RM) and RTS?I would really appritiate any help on this...

1 answers | 335 bytes |

Proift max & Cost Min

Hi, I am looking for spreadsheet examples on Profit max & cost min(excel solver) product mix applicationsusing MIP, LP, NLPformulations. I have seen the solver site. can someone help....

2 answers | 210 bytes |

Call for Papers

CALL FR PAPERSAlgorithmic Research (AR)Special Issue on Modeling Under UncertaintyDEADLINE: April 1, 2007Guest EditorsHarvey J. Greenberg (Ed.) John BirgeUniversity of Colorado at Denver University of ChicagoHarvey.Greenberg@cudenver.edu John.Birge@ChicagoGSB.eduGeorge Klir J KohlasBinghamton Un...

0 answers | 1627 bytes |

Trigonometric Functions in CPLEX

Isn't that quite funny not having built in trigonometric functions inCPLEX?As simple as sin(30) = 1/2...

20 answers | 133 bytes |

Enums in the SingleStep

Hi, all,I use psos and the SingleStep v.7.4 debugger and have the followingproblem with enums. By default, an enum variable is displayed in thewatch window as an integer. When I try to edit properties the variableand set "Change type to" field (which works fine with "struct" types)to an enum typ...

0 answers | 661 bytes |

Optimal order

Hi,I have an integer problem where I should find some sort of optimalorder in which some tasks should be performed.Lets say I have the continuous decision variables 0 <= x_{i,k} <= 1 fori in I, k in K.The problem is then to:max sum_{i in I} sum_{k in K} c_i x_{i,k}s.t.sum{i in I} a_i x_{i,...

3 answers | 1724 bytes |