**Sept. 2014: **On coarse graining of information and its application to pattern recognition; 34rd International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering (MaxEnt 2014). Amboise, France.

**Sept. 2013:** Characterisation of dislocation content in multicrystallinesilicon wafers; Gettering and Defect Engineering in Semiconductor Technology 2013 (GADEST 2013). Oxford, UK.

**Dec. 2013: **On coarse graining of information and prior probabilities; 33rd International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering (MaxEnt 2013). Canberra, Australia.

**Sept. 2010: **On in-line NIR based defect detection systems for multi-crystalline silicon wafers; The 23th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2008). Valencia, Spain.

**Jul. 2009: **On Application of MaxEnt to Modelling of Complex Systems; 29th International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering (MaxEnt 2009). Oxford, USA.

**Jul.** **2006: **On Characterization of Mixture of Granular Materials; Gordon Conference on Granular & Granular-Fluid Flow (GRC). Oxford, UK.

**Aug. 2005:** On Statistical Theory for Granular Matters ; News, EXpectations and Trends in Statistical Physics (NEXT-SigmaPhi). Crete, Greece.

**May 2003: **Continuous Mixing of Particulate Materials; 4th International Conference for Conveying and Handling of Particulate Solids (CHoPS 2003). Budapest, Hungary.

**Jul. 1996:** Classification of Time-like Surfaces and Space-like Hyper surfaces in 4-dimensional Bianchi Cosmological Classes; 21st International Colloquium on Group Theoretical Methods in Physics (Group 21). Goslar, Germany.