A proposal for scheduling and delivery orders under VMI environment

[ENG] Vendor managed inventory (VMI) is a widely applied stock management method in SCM in which the inventory is controlled, planned and managed by the supplier, on behalf of the organization which consumes the product, based on an expected demand and on previously agreed inventory levels. Thus, is the supplier who, according to the customer inventory levels, generates a purchase order defining quantities and delivery dates. As a general rule, when such a stock management system is introduced, the objectives are diverse. One of the most important is to avoid excessive inventory levels in the different elements of the supply chain and the Bullwhip effect caused by demand variability. In addition, it is reasonable to expect a reduction of the administrative costs, due for instance to duplicity of administrative errors in the transmission of information. In the case described in this paper, the company QMC was able to identify the opportunity to improve some specific aspects on its operations management, relating to the products that as “vendor” would manage through VMI

Special issue: Advances in Engineering Networks

[EN] This special issue of the International Journal of Production Management and Engineering is dedicated on the most recent and relevant research, theories and practices in Industrial Engineering and Operations Management presented at the 12th International Conference on Industrial Engineering and Industrial Management and XXII Congreso de Ingeniería de Organización - CIO18.De Castro, R.; Gimenez, G.; Mula, J.; Boza, A.; Cuenca, L.; Gómez-Gasquet, P.; Vicens-Salort, E. (2019). Special issue: Advances in Engineering Networks. International Journal of Production Management and Engineering. 7(Número Especial):63-64. https://doi.org/10.4995/ijpme.2019.11901SWORD63647Número Especia

Modelo de trasvase indirecto de opciones de fabricación entre organizaciones: Una aplicación a la industria cerámica

In the current competitive contexts, it is widely accepted and proved that inter-enterprise collaboration lead in many occasions to better results. The Spanish ceramic industry must improve, dropping its manufacturing costs in order to be able to compete with low cost products coming from Asia. In this sense, this work presents the main results obtained from applying an innovative model, which facilitates the transfer of manufacturing options between two ceramic enterprises that share a common supplier in the scenario where one of them needs more manufacturing capacity than the one booked according to its demand forecast and the another need less. Then, some decisional mechanisms are applied, which output the values for certain parameters in order to augment the benefit of all the three participants. With the application of this model better organisational results both economic and of service level are achieved.En los contextos actuales de competitividad es ampliamente aceptado que la colaboración entre empresas conduce muchas veces a mejores resultados. Además, la industria cerámica española debe mejorar y reducir los costes de sus procesos de fabricación para así poder competir con los productos de menor coste que provienen principalmente de países asiáticos. En este sentido, este trabajo presenta los resultados de aplicar un modelo innovador para facilitar el trasvase indirecto de opciones de fabricación entre dos empresas fabricantes cerámicas competidoras que comparten un mismo proveedor de productos, cuando una de ellas necesita más capacidad de fabricación de la que reservó en base a sus previsiones de demanda y la otra tiene un excedente. Así, se desarrollan una serie de mecanismos decisionales los cuales proporcionan los valores que deben tomar ciertos parámetros para aumentar el beneficio de todos los participantes en el proceso. Con la aplicación de este modelo se alcanzan mejores resultados empresariales tanto económicos como de nivel de servicio

The Furongian break-up (rift/drift) unconformity in the central Anti-Atlas, Morocco

This paper presents a stratigraphic, sedimentological and palaeontological study of the Cambrian–Ordovician transition in the central Anti-Atlas in order to characterize the rift-drift transition of the Cambrian Atlas Rift. The event stratigraphy and sedimentology of the Cambrian–Ordovician transition in the central Anti-Atlas, and the endemic character of the latest shelly faunas from the Cambrian Atlas Rift have been reviewed, the latter by sampling the Bailiella Formation and the base of the Jbel Lmgaysmat Formation. In the vicinity of Foum Zguid, central Anti-Atlas, several unconformities (joined laterally into one single angular discordance or paraconformity) can be recognized across the Cambrian–Ordovician transition: (i) a ravinement surface capped by lenses of polymictic conglomerates marking the top of the Azlag Formation and reflecting reworking of the substrate under sharp transgressive conditions; (ii) a skeletal calcareous siltstone bed at the base of the Jbel Lmgaysmat Formation preserving surficial silicification (silcretization related to broad uplift, denudation and weathering of an exposed landscape dominated by silica-rich rocks), postdated by fissuring associated with hydrothermal mineralization of Fe (Ba-Mn-Pb) ore deposits, linked to the opening of the so-called El Graara graben; (iii) generalized uplift and denudation, followed by sedimentation of alluvial-to-fluvial and proximal coastal-plain deposits (lower member of the Lower Fezouata Formation); and (iv) a final drowning and shaly blanketing of the inherited palaeorelief by the upper member of the same formation, which marks the beginning of passive-margin conditions. The Bailiella Formation has yielded the trilobite species Planolimbus hessikouanus, Maladioidella? destombesi n.sp. and Bailiella sepulcra n.sp., and the Jbel Lmgaysmat Formation Bailiaspis? glabrata, which point to biogeographic connections with the neighbouring Avalonian and west-European margins of Northwest Gondwana and Baltica.Financial support for this work was provided by project CGL2017-87631-P from Spanish MINECO.Peer reviewe