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WISKUNDIG MODELLEREN KUNST OF KUNDE?

WISKUNDIG MODELLEREN KUNST OF KUNDE?. 11 november 2009 Jaap Praagman CQM. Lekker biertje?. Detailed design: transfer functions. The design requirements are the quantitative performance specifications for each element of the design Use a transfer functions to develop the design requirements

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WISKUNDIG MODELLEREN KUNST OF KUNDE?

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  1. WISKUNDIG MODELLERENKUNST OF KUNDE? 11 november2009 JaapPraagman CQM

  2. Lekker biertje?

  3. Detailed design: transfer functions • The design requirements are the quantitative performance specifications for each element of the design • Use a transfer functions to develop the design requirements Y = f (X1, X2, X3, …, Xk) • Transfer functions clarify the relation between requirements and X’s at multiple levels Customer CTQ YCTQ = f1(Xsystem) System Parameters Ysystem = f2(Xsubsystem) Subsystem Parameters Ysubsystem = f3(Xcomponent) Component Parameters Ycomponent = f4(Xprocess) Process Parameters

  4. Transfer functions Senseo • Senseo End product parameters (CTQ’s) • Fresh cup of coffee • Quickly (less then 20 sec) • Constant quality (DS% within 1.56% +/- 0.1%) • Brew Amount(125 +/- 8 ml) • Crème layer • …. Performance just before market launch Who improves what ? Sara Lee | Douwe Egberts or Philips ?

  5. Transferfunctions Senseo • f = pump flow • p = pad weight • w = rel. water uptake • y = extraction yield • Transfer functions • Brew Amount = f - p * w + p * y • DS% = y * p / (f - p * w + p * y)

  6. Wanneer is de trein op tijd?

  7. Trein vertrek gereedmaken Rijweg instellen en sein veilig X % Start proces Vertrek proces Landelijke dispunctualitiet Y % Rij proces Z % Halteer proces

  8. Wat bepaalt de lijnbreedte?

  9. Bijzonder bedrijf hoge “wsk”dichtheid advies zelfstandig CQM

  10. drive echte problemen samen qm

  11. Toepassingsgebieden/speerpunten Optimalisatie van logistiek Verbetering van produkt en proces innovatie Specials

  12. hoe Projecten • 150 per jaar • van klein (paar dagen) tot groot (manjaren) • veel bij klant/opdrachtgever

  13. Voor wie?

  14. Door wie? 29 consultants • wsk – econometrie – inf • ongeveer 60% eerstebaan • 6(!) vrouwen • kleinehelftgepromoveerd • meerdan 350 jaarervaring

  15. NACHT VAN EINDHOVEN CQM24-25 mei 2007

  16. Waarom omrijden?

  17. Wat is glad?

  18. Wat is het effect van..?

  19. Wat is normaal?

  20. Waar produceren?

  21. wiskundig modelleren oplossing/ antwoord probleem/ vraag werkelijkheid modelwereld model oplossing wiskundig probleem

  22. waarom - begrijpen hoe de “wereld” in elkaar zit, • sturen • wat zijn de belangrijkste invloedsfactoren • “probleem” vs doel

  23. lessen Wat is de vraag? Wat is het onderliggende proces? Detailniveau Stochastiek in model. Stakeholder management. Acceptatie en validatie Model of werkelijkheid. Terugvertaling, wat betekent het voor de opdrachtgever?

  24. From ‘Problem’ to ‘Solution’ Real life ‘problem’ Assumptions, data, knowledge relevant reality Specific ‘problem’ (bounded reality) Solutions for specific ‘problem’ relevant Y’s model structure (relevant x’s and relationships) relevant data model conclusions model y=f(x,t) quantification analysis questions analysis answers

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