Este trabajo ilustra no sólo una innovadora forma de estudiar el efecto látigo, o una forma distinta de modelar las cadenas de suministro usando los principios. Se debe a un desajuste en la cadena de suministro entre las Relación entre precio-demanda pueden incrementar o mitigar el efecto látigo. Efecto Latigo Solución CPFR Planeación agregada. Es la sincronización de la estrategia de la cadena de suministro y de competitiva. Causas.

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Daniela Pertuz

Smoothing Supply Chain Dynamics. Therefore, the model shows that given the heuristic policies from the supply chain managers during the yearno shortage to customers was experienced.

We finally agree that forecasting was going to be again a responsibility of production, but under the assessment of the sales department When a production shortage happens, they use past sales as a guide to assign available products to fulfil demand orders from RDCs. The model lays emphasis on the modelling of policies of the supply chain managers that may be based on their own experience or knowledge. The model is described in mathematical form as follows.

I always try to follow my policy, which is optimal. Given the motive of this business, it is not possible to count on the supply of backorders either.

Tatiana Lara on Prezi

Management Science35, 3, pp. This phase lag it is not caused by the delivering time, which is less than a week, but by the demand which is first served from the RDC before the RDC manager sends an order to the DCs. As a consequence a SD model will be good in explaining but limited in predicting. In figure 9 we can also see the existence of a one week delay between the purchase order and supply. What is intended on this paper is to emphasize methodology used to examine a particular problem, especially because in our opinion, and we coincide with many other authors, the Bullwhip Effect is a problem concerned with the information flow and policy alignment.


This has generated in the sales managers the culture of over ordering when rationing expectations appear. We will illustrate just what kind of scenarios could be developed for a more detailed study, and how to asses the impact of new policies.

Daniela Pertuz on Prezi

Suminitro initial inventory is 20, units. We have selected for feecto validation and calibration parameterization the historic demand for the year As with any other beverages companies, EMSA is mainly interested in perfect order policies. We see the increased distortion of oscillation manifest the Bullwhip Effect, as described by Forrester The continuous line represents sales: Modelling considerations In our case study we work with the main bottler of PepsiCo Beverages International in Mexico: This oscillatory distortion is explained next.

Therefore, we will consider only the behaviour of the system after the 10 th week.

The variable value or constant is communicated to another variable by drawing a single arrow. In each time step, material is moved from one level to the next, until it reaches the final level, where it is output. Consider also that the suppliers can receive orders that vary from 80, to zero units from one month to the next.


… more than classic ‘beer game’.

Therefore, the model is limited in detail but not in meaning since our analysis of distortions is of an aggregated nature. The bullwhip effect is attributed mainly to two causes: The objective of supply chain dynamics problems is to minimize operational costs derived from those distortions and amplifications by improving managers order policies.

The value of Input at DelayTime time units earlier in the simulation. And additional volume growth came from products under the Dole and SoBe brands. This is because the coverage policy is 3 days of demand. International Journal of Production Economics78, pp.

The dotted line represents the forecast value and in green we have the ‘real’ demand. We shall say that the maximum demand is for 60, units, that is, 20, units less than the previous policy, with the advantage of stability for the supplier.

Even though the bullwhip effect has decreased we cannot declare it to be solved. However, notice that the raw material inventory variation does not have any relationship with efcto demand variation.