Development of statistical models for property valuation

Project manager at U-vivo Aps (2011) a medical device company spun-out from the Danish Technical University. U-vivo develops technology for disinfection of medical devices based on UV technology. The patented technology is based on solid scientific work and forms the basis for our prototyping and disinfection tests of various device parts. My work at U-vivo has been: project management, coordination of subcontractors, research, patenting, documentation, investor relations, fund raising and… Show more Project manager at U-vivo Aps (2011) a medical device company spun-out from the Danish Technical University. U-vivo develops technology for disinfection of medical devices based on UV technology. The patented technology is based on solid scientific work and forms the basis for our prototyping and disinfection tests of various device parts. My work at U-vivo has been: project management, coordination of subcontractors, research, patenting, documentation, investor relations, fund raising and running the company on a daily basis.Courses:1. The revised EN 60601 - series - how to apply safety and risk management to medical electrical equipment and systems (MEDICO Industrien 2014)2. Project management for product development of medical devices (MEDICO Industrien 2014)References:Bak J and Begovic T. 2012. A prototype catheter for UVC disinfection. Journal of Hospital Infection, vol: 84, issue: 2, pages: 173–177, 2013.Bak J, Begovic T, Bjarnsholt T, Nielsen A. 2011. A UVC Device for Intra-luminal Disinfection of Catheters: In Vitro Tests on Soft Polymer Tubes Contaminated with Pseudomonas aeruginosa, Staphylococcus aureus, Escherichia coli and Candida albicans. Photochemistry & Photobiology, 87: 1123-1128. Bak J., 2 patents (medical device parts for catheter disinfection) Show less

In 2007 I was employed at DTU Photonics. My main research activity was focused on the exploitation of newly developed UV LED diodes for disinfection applications. These diodes have exiting biological applications and can be used for disinfection, photodynamic therapy and spectroscopy. Scientific references:Bak J, Ladefoged SD, Begovic T, Winding A. 2010. UVC fluencies for preventative treatment of Pseudomonas aeruginosa contaminated polymer tubes. Biofouling, Vol. 26, No. 7, pp.… Show more In 2007 I was employed at DTU Photonics. My main research activity was focused on the exploitation of newly developed UV LED diodes for disinfection applications. These diodes have exiting biological applications and can be used for disinfection, photodynamic therapy and spectroscopy. Scientific references:Bak J, Ladefoged SD, Begovic T, Winding A. 2010. UVC fluencies for preventative treatment of Pseudomonas aeruginosa contaminated polymer tubes. Biofouling, Vol. 26, No. 7, pp. 821-828. Bak J, Jørgensen TM, Gravemann U., Helfmann J., Vorontsova I. 2010 Potential in-vivo UVC disinfection of catheter lumens: Estimation of the doses received by the blood flow outside the catheter tip hole. Photochemistry & Photobiology, 87: 350-356.Bak J, Ladefoged SD, Tvede M, Begovic T, Gregersen A. 2010. Disinfection of Pseudomonas aeruginosa biofilm contaminated tube lumens with ultraviolet C light emitting diodes. Biofouling, Vol. 26, No. 1, pp. 31-38.Bak J, Ladefoged SD, Tvede M, Begovic T, Gregersen A. 2009. Dose requirements for UVC disinfection of catheter biofilm. Biofouling, Vol. 25, No. 3, pp. 289-296. Show less

In national and EU funded projects high temperature gas cells for measurements of fundamental gas data were developed and experimental procedures for quantitative determination of gases under extreme conditions were invented and tested in combustion systems and in aircraft exhaust plumes. Quantitative on site FTIR analysis of aircraft exhaust gases, for instance, relies on rapid calculations of gas spectra from a spectral data base such as Hitran or experimental data. I developed data… Show more In national and EU funded projects high temperature gas cells for measurements of fundamental gas data were developed and experimental procedures for quantitative determination of gases under extreme conditions were invented and tested in combustion systems and in aircraft exhaust plumes. Quantitative on site FTIR analysis of aircraft exhaust gases, for instance, relies on rapid calculations of gas spectra from a spectral data base such as Hitran or experimental data. I developed data analytical methods based on chemometrics for data compression in which the calculated gas spectra could be retrieved rapidly.In order to push the detection limits of for instance glucose in aqueous solutions with existing FTIR and FT-NIR instruments, a dual-beam FT-NIR set-up for real-time referencing was proposed. A dual-beam FT-NIR set-up was developed for analysis of trace molecules in aqueous solutions. During my collaboration with the hospital I got involved in the problem of infected medical implants (catheters). Research activities using Ultraviolet – C (UVC) light to disinfect contaminated catheters were initiated. Conventional UVC equipment for disinfection was tested on patient catheters.Selected references:Jensen, P.S.; Bak, J., Measurements of urea and glucose in aqueous solutions with dual-beam near-infrared Fourier-transform spectroscopy. Appl. Spectrosc. (2002) 56 1593-1599Bak, J.; Andersen, H.V.; Friderichsen, A.; Clausen, S. Comparison of noise sources in dual- and single-beam Fourier-transform near-infrared spectrometry. Appl. Opt. (2005) 44 , 6167-6175 Bak, J.; Clausen, S., FTIR emission spectroscopy methods and procedures for real time quantitative gas analysis in industrial environments. Meas. Sci. Technol. (2002) 13 , 150-156Bak, J., Modeling of gas absorption cross sections by use of principal-component-analysis model parameters. Appl. Opt. (2002) 41 , 2840-2846 Show less

The major part of my research activities was funded by the Danish Ministry of Energy and the Danish power industries. A major activity was the use of laser based methods for in-situ flow velocity measurements in large pulverized coal fired combustions systems (2 MW). These systems were engineered at Risø and optical diagnostic measurements on these systems were carried out under varying drift conditions. The goal of the overall research activities was to develop diagnostic methods that could be… Show more The major part of my research activities was funded by the Danish Ministry of Energy and the Danish power industries. A major activity was the use of laser based methods for in-situ flow velocity measurements in large pulverized coal fired combustions systems (2 MW). These systems were engineered at Risø and optical diagnostic measurements on these systems were carried out under varying drift conditions. The goal of the overall research activities was to develop diagnostic methods that could be used on full scale combustors used in power plants.I developed infrared spectroscopy methods primarily for gas analysis into the arsenal of measuring techniques present in the department. At that time, calibration of full spectrum analyzers such as Fourier Transform Infrared Instruments (FTIR) was done by the end user. The FTIR analyzer is a multi-component gas analyzer. A substantial calibration work for various important gases was done using chemometrics for calibration and prediction. The FTIR spectroscopic equipment was used routinely for quantitative and qualitative measurements in a broad range of applications. I developed a gas conditioning system, which was interfaced to both an atmospheric and pressurized thermo gravemetric analyzer (TGA) for characterization of solid fuels (coal, coke and bio mass). With the combined TGA-FTIR set-up, gases evolved from the solid fuel samples were measured on-line and correlated to the weight change of the fuel sample. Selected references:Bak, J., Measurements of impurities in strongly absorbing powdery materials by DRIFTS. Internet J. Vib. Spectrosc. (1998) 2 (no.4)Bak, J.; Kindl, B., Quantitative analysis of mineral powders by DRIFTS: Determination of SrCO3 in superconductor precursor powders. Appl. Spectrosc. (1997) 51 , 1730-1735Bak, J.; Larsen, A., Quantitative gas analysis with FT-IR: Method for CO calibration using partial least-squares with linearized data. Appl. Spectrosc. (1995) 49 , 437-443 Show less

Newly graduated from university I was employed from 1988 to 1990 as a process engineer in Mercante International, a Danish LED printer company. Here I was part of the team developing the xerographic process module. With my optical and spectroscopic background I had the responsibility for the photoconductor technology, LED light exposure modules and toner technology. During this employment, I took part in specification and testing activities at two Japanese companies (Hitachi and Fuji Electric).… Show more Newly graduated from university I was employed from 1988 to 1990 as a process engineer in Mercante International, a Danish LED printer company. Here I was part of the team developing the xerographic process module. With my optical and spectroscopic background I had the responsibility for the photoconductor technology, LED light exposure modules and toner technology. During this employment, I took part in specification and testing activities at two Japanese companies (Hitachi and Fuji Electric). . Show less

Trainee as a smith. Employed in the marine boiler department.