ERP Future 2013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Felix Piazolo and Michael Felderer Part I Keynotes Crossing the Boundaries: e-Invoicing/e-Procurement as Native ERP Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Christian Huemer, Marco Zapletal and Philipp Liegl Returning Lost Elements in the Sales Process: Manum D...

Markov-modulated processes have been used in stochastic inventory models with setup costs for modeling demand under the innuence of uncertain environmental factors, such as uctuat-ing economic and marketing conditions. The analyses of these models have been carried out in the literature only under the assumption that unsatissed demand is fully backlogged. We study a Markovian demand model in th...

We consider an M/M/1 queueing system with inventory under the (r,Q) policy and with lost sales, in which demands occur according to a Poisson process and service times are exponentially distributed. All arriving customers during stockout are lost. We derive the stationary distributions of the joint queue length (number of customers in the system) and on-hand inventory when lead times are random...

Recall that some of the unknown parameters in our brand sales model are specified as categoryand brand-specific while others are not (see Equation 6 in the paper). To estimate this model we have data available for 2,831 brands over a period of 21 quarters starting in quarter 4/2000 until quarter 4/2005. Since the brand sales model includes lagged sales the first quarter is inherently lost. In a...

Word-of-Mouth (WOM) has been recognized as one of the most influential resources of information transmission especially for the experience goods. It has been shown that a higher volume of WOM has a positive effect on increasing the demand for a certain product. In addition to the WOM-sales interdependence, there is also dependence between sales and inventory. It is a well-studied concept that s...

Due to the strong competition that exists today, most manufacturing organizations are in a continuous effort for increasing their profits and reducing their costs. Accurate sales forecasting is certainly an inexpensive way to meet the aforementioned goals, since this leads to improved customer service, reduced lost sales and product returns and more efficient production planning. Especially for...