In this paper, we analyze a variety of approaches to obtain lower bounds for multi-level production planning problems with big bucket capacities, i.e., problems in which multiple items compete for the same resources. We give an extensive survey of both known and new methods, and also establish...

BC-PROD is a prototype modelling and optimization system designed and able to tackle a wide variety of the discrete-time lot-sizing problems arising both in practice and in the literature. To use BC-PROD, the user needs to formulate his/her problem as a mixed integer program using XPRESS-MP's...

In this paper, we study a multi-periodic production planning problem in agriculture. This problem belongs to the class of crop rotation planning problems, which have received considerable attention in the literature in recent years. Crop cultivation and fallow periods must be scheduled on land...

In bioenergy villages, local bioenergy plants are installed to supply electricity, which is fed into the national grid, and to heat households through a local heat distribution network. In this paper, a linear mathematical model, which economically optimizes local bioenergy production and...

Today, almost 70% of the electricity is produced from fossil fuels and power generation accounts for over 40% of global CO2 emissions. If the targets to reduce climate change are to be met, substantial reductions in emissions are necessary. Compared to other sectors emission reductions in the...

В статье исследуются общие вопросы управления логистическими транспортно-складскими центрами. Приводится классификация логистических процессов в...

Cost reduction, along with the satisfaction of patient's and other users' needs, is one of the major concerns of industries and organizations that provide health care services. Hospitals are complex organizations that deal with a wide range of materials. These materials require adequate and...