Personal

Education

Experience

Below a list of projects while self employed, as well as important projects for various employers:

Apr. 2000 - Apr. 2007: project "Declic"

DECLIC is a scientific facility for use in the International Space Station. I'm involved in multiple facets: system design and engineering, realtime programming, temperature calibration and verification, documentation and quality assurance. An interesting article on Declic has appeared in Linux Journal (Aug. '04).
Reference: Dr. Frank Kayzel, Declic project manager, IDEAS! UvA B.V. +31(0)20-5256394

Jul. 2007 - Mar. 2008: research project sonar

I developed sonar equipment for a confidential project, where I used high speed data acquisition, and analysis algorithms implemented in Xilinx fpga's. I used Qt and Qwt for the visualization of the rapidly changing data.

Jan. - Mar. 2008 : Macintosh USB driver

The Dutch company Elomax produces some chips that interface pc's via the USB bus to digital and analog electronics. Elomax doesn't provide Macintosh software, so I built some myself, and decided to offer it as Open Source.
The downloads are not yet finalized ( 9-3-2008), but on request I'll send functional but unfinished code.

Apr. 2000 - Nov. 2001: "Documentation Management System" (DMS)

For aerospace projects a careful management of documents and document versions is a requirement, and the DMS is an intranet web application that takes care of this. It provides all users with a well-organized overview of the complete project documentation database. Integral parts of the DMS are version control, and mandatory document numbering according to the Product Assurance rules of the project.

Jun. - Dec. 2000: E6B "whiz wheel" simulator

This application is being used in pilot education, and clarifies the use of a navigation instrument (the 'E6B Whiz Wheel'). I developed the prototype in Java, it can be tried with this online demo.

Sept. 2004: Macintosh version of FEV1 calculator

I developed a Macintosh version of the FEV1 calculator application of PT Medical. This application is being used by physicians for the calculation of the 'FEV1' lung function value.

Apr. - Jul. 2000: KPN Internet Cost Control

For KPN I developed a Mac application that could calculate the actual costs of a modem internet connection based on the complex cost structure of the phone company. The program could also ration internet usage for multiple users on one computer.

Sept. - Dec. 1999: Spectrostar dll conversion

The interface between the colorimeter hardware and the desktop software was handled by a Windows DLL, which I converted to a Macintosh shared library with the same API.
I also developed a GUI program for showing and analyzing the results of the colorimeter.

Mar. 1998 - Aug. 1999: airport risk analysis

I worked in a team developing risk models, and doing calculations with these models. Our main task was doing quantitative risk analysis for the Schiphol area. My specific function was the application of visualization and analysis techniques to verify and clarify the methodology of the calculations.

Aug. 1992 - Aug. 1995: project "Alice-2"

Alice-2 was a successor of project Alice ('91-'93). Its regulation- and telemetry software were converted from assembler to C. I was responsible for technical documentation, software QA management and testing of the software.

1991 - 1993: project "Alice"

The Alice project was used for long duration studies of critical gasses in the Russian MIR space station. I was responsible for the realtime software and system engineering of the thermal system. I wrote the software in assembly language.

1993 - 1994: project "CPF-2"

CPF-2 was a successor of CPF ('89-'92). CPF-2 was flown in the IML-2 mission of the Spaceshuttle. I've developed many technical and scientific applications for this equipment.

1989 - 1992: project "CPF"

The Critical Point Facility is scientific instrument that was flown in the IML-1 mission of the Spaceshuttle. I wrote custom user interface software for this project.

1997: project "Foon4Mac"

I developed this shareware application together with Axel Roest ( Axel Development & Support), so that one could use PTT Windows-only phonebook cd-roms on Mac computers.

1997: "Where's the Waste?"

I developed an application that would provide visibility of the losses that occur when using harddisks with large application blocks. This application was 'Macintosh shareware of the week' at Applelinks in june 1997.

1985 until today : Experience with analog electronics

During my career I didn't only do software development, with several projects (Alice and Declic for instance), I was deeply involved in the analog signal handling hardware. My experience in analyzing and solving analog noise sources is significant. I'm also an expert in the area of high accuracy temperature measurements.
I've also built and debugged the hardware of custom computers so I'm also fairly experienced with digital hardware.