Multi-period

A MILP model of the aggregated scheduling problem of the EPS process was proposed by Sand and Engell [16]. The model is formulated as a discrete time multi-period model where each period i e 1,..., 1 corresponds to two days. The degrees of freedom of the aggregated problem are the following discrete production decisions ... [Pg.208]

I. (2004) Approximation to multi-stage stochastic optimization in multi-period batch plant scheduling under demand uncertainty. Industrial and Engineering Chemistry Research, 43, 3695—3713. [Pg.214]

Fig. 47 Principle of multi-period transportation and transit inventories...

R8 Multi-period transport and transit inventory planning 3... [Pg.126]

Concluding, the areas mostly impacted by the global scope such as global material flow planning and multi-period transport and transit inventory planning are covered best by global models (s. table 15). [Pg.127]

Multi-period transport and transit inventory planning Static and dynamic inventory planning Variable production processes, input and output planning... [Pg.135]

Distribution planning described in subchapter 5.5 handles multi-period transportation time and transit inventories as global material flow planning. Moreover, static and dynamic inventory planning is supported. [Pg.136]

Sahinidis, N.V. and Grossmann, I.E. (1992) Reformulation of multi-period MILP model for planning and scheduling of chemical processes. Operations Research,... [Pg.78]

In the context of within-patient designs, for example the multi-period crossover, there could however, be some additional considerations. Such designs are frequently used in phase I where sample sizes are small and the gains afforded by the common estimation of standard deviation could well be worthwhile, so we should not by any means dismiss these methods completely. [Pg.79]

Capacity. Both uncapacitated (-) and capacitated (C) models exist. Some of the multi-period, capacitated models also allow expansions (E), relocations (RL) or reductions (R) of capacity throughout the planning horizon. [Pg.55]

Fleischmann et al. (2006) provide a global production network planning model used at BMW that extends the simpler load planning model proposed by Flenrich (2002). The model is a multi-period, multi-product model with an objective function that maximizes the pre-tax net present value of the network. It includes decisions on product-plant allocation, production volumes, material sourcing volumes by supply region, structural and product-specific investments and use of overtime capacity. A major contribution of the model is the incorporation of the time-distribution of investment expenditures typically observed in automobile production networks. While tariffs are included in the transportation costs, the model does not consider further aspects of international trade such as currencies, duty drawbacks or local content rules which play a major role in practice. [Pg.59]

Melo et al. (2005) propose a multi-period, deterministic, multiple-product MILP model for strategic supply chain planning. The model does not impose any restrictions on the number and type of facilities and the transportation links between facilities. The basic model explicitly covers relocation of capacity to new facilities. It can be extended to include capacity expansions and reductions. To this end, two fictitious, non-selectable facilities are introduced that provide additional or absorb excessive capacities. Capacity is assumed to be adjustable on a continuous scale but an extension to modular capacity is also provided. The model is very... [Pg.61]

Kouvelis et al. (2004) present a relatively simple multi-period MILP plant location model for global production network design with investment decisions only allowed in the first period. The production system consists of component-dedicated manufacturing sites and final assembly sites. It is limited to two production levels and one final product. The objective function maximizes the NPV of the production network. The main purpose of the model is to analyze the effects financing subsidies, tax regimes, tariff structures and local content requirements have on optimal network design. The analysis is based on theoretical considerations and a numerical example. More complex aspects of international trade such as duty drawbacks are not considered. [Pg.63]

The model proposed by Bhutta et al. (2003) is a multi-period, deterministic multiple-product MILP model integrating plant location, production, distribution and investment planning in a global environment. It is relatively simple both mathematically (no binary decision variables but integer production quantities) and with respect to the assumptions made for key modeling parameters. Capacity can be modified continuously without lower or upper bounds. International features are limited to exchange rates and tariffs. [Pg.63]

Antunes A, Peeters D (2001) On solving complex multi-period location models using simulated annealing. European Journal of Operational Research 130 190-201... [Pg.209]

Canel C, Das SR (1999) The uncapacitated multi-period facilities location with profit maximization. International Journal of Physical Distribution Logistics 29 409-433... [Pg.214]

Canel C, Khumawala BM (1997) Multi-period international facilities location an algorithm and application. International Journal of Production Research 35 1891-1910... [Pg.214]

Canel C, Khumawala BM, Law J, Loh A (2001) An algorithm for the capacitated, multi-commodity multi-period facility location problem. Computers Operations Research 28 411-427... [Pg.214]

Dogan K, Goetschalckx M (1999) A primal decomposition method for the integrated design of multi-period production-distribution systems. HE Transactions 31 1027-1036... [Pg.217]

The multi-period nature of allocations, which drives dependence both upon post-2012 decisions and the risk of perverse incentives ... [Pg.9]

If the objective of free allocation is to compensate existing assets for the impact of new regulation, it should not be required for new entrants. In practice, most governments set aside free new entrant reserves , which economically amount to an investment subsidy. If the volume were unlimited, such subsidies might reduce the product price - which may be part of the aim, but is not actually achieved." Governments use NERs to help support new construction, but giving free allowances in proportion to the carbon intensity of new plants, can bias the incentive towards more carbon-intensive investments (Neuhoff et al., this issue). When projected forwards, such distortions are amplified by the multi-period nature of the EU ETS, to which we now turn. [Pg.15]

As indicated above (and see note 9), uncertainty about the future carries a cost, and early clarity about post-2012 continuation would be valuable. The rules surrounding future allocations, however, need to address a number of issues arising from the potential incentives surrounding multi-period allocations. [Pg.16]

Thus, the given excitation creates a multi-periodic response field with nojo (for n = 1, 2, 3,.) as the frequencies in Eqn. (2.7.3). [Pg.128]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...