Jacek Puchalski Graduate: M.Sc. of the Faculty of Technical Physics and Applied Mathematics (1986) and the Faculty of Electronics (1988). Warsaw University of Technology. In 1995 - PhD dissertation on numerical methods of modeling gradient systems Work:In the years 1987–1995 - an assistant at the Warsaw University of Technology. . Author’s papers from  the field of his Ph.D. were published in the journals of the Optical Society of America and presented at scientific conferences in Beijing (China) – 1993 SPIE, and Rochester (USA) 1994.For the next 10 years, works on the new technologies industry in companies producing and importing cash registers (prepared and participated in the certification of new models of cash registers in the Ministry of Finance and conducted training and service of fiscal devices. Since 2006 work at the Central Office of Measures. Author and co-author of above 40 scientific papers published in domestic and foreign journals as well as presentations and published conference materials in the field of metrology, in particular regression and uncertainty estimation. Representative of the Central Office of Measures in the European metrology network MATHMET EMN.Member of the Optical Society of America and the American Institute of Physics.