Roussos Dimitrakopoulos

Back

Cahiers du GERAD

91 results — page 3 of 5

, , and

This paper analyzes the effects of geological heterogeneity representation in a producing reservoir, when different stochastic simulation methods are used, s...

BibTeX reference
, , and

For pattern-based simulation methods such as SIMPAT, filtersim, wavesim, ect, patterns are stored by scanning a training image with a sliding template. Dimen...

BibTeX reference
and

The traditional mine planning framework employs a flawed approach in the design of ultimate pit limits and phases. Conventional methods arbitrarily confine ...

BibTeX reference
and

This paper presents three hyper-heuristic approaches for the stochastic open-pit mine production scheduling problem with one processing stream (SMPS) and one...

BibTeX reference
and

Complex polymetallic mining projects with multiple processing streams tend to require tight blending constraints, with different operational and processing t...

BibTeX reference
and

With the advent of inexpensive sensors and digital storage, increasing amounts of data about a mining complex can be collected. This can include camera imagi...

BibTeX reference
and

Every mining operation faces a decision on additional drilling at some point during its lifetime. The two questions that always arise with this decision are ...

BibTeX reference
and

Recent developments in the global rare earth elements (REE) sector have caused a surge in motivation for nations outside of China to secure their own REE sup...

BibTeX reference
and

A decomposition method is developed to optimize a mineral value chain composed of a one or multiple mines and a material flow circuit. In the proposed decomp...

BibTeX reference
and

As open pit mining of a mineral deposit deepens, the cost of extraction may increase up to a threshold where transitioning to mining through underground meth...

BibTeX reference
and

High-order sequential simulation techniques for complex and non-Gaussian spatially distributed variables were developed over the last few years. This paper p...

BibTeX reference
and

Mineral value chains consist of material from multiple sources, several processing streams, and transportation systems that combine to generate various salea...

BibTeX reference
and

Over the past several years, there has been substantial progress in developing new stochastic mine planning optimization models and computationally efficient...

BibTeX reference
and

This paper presents a new high-order, non-stationary sequential simulation approach, aiming to deal with the typically complex, curvilinear structures and hi...

BibTeX reference
, , and

A stochastic integer-programming (SIP) model is presented to optimize long-term scheduling of underground mine operations while considering geological uncert...

BibTeX reference
and

The optimization of mine complexes and related value chains is a challenging problem due to the simultaneous presence of a highly-dimensional decision space,...

BibTeX reference
and

This paper addresses the optimization of mineral supply chain operations under metal and material type uncertainties. A mathematical model to simultaneously ...

BibTeX reference
, , and

This paper presents a mixed integer programming formulation dealing with the effective minimisation of risk incurred when optimizing mining production rates ...

BibTeX reference
and

Traditional geostatistical simulation methods assume that the first two order statistics are sufficient to model mineral deposits. However, these methods are...

BibTeX reference
and

Modeling and assessing spatial uncertainty of mineral deposits is critical for capital investments in mining projects. However, traditional approaches for mo...

BibTeX reference