Homepage of Kees Lemmens

Some course activities :

• Some material for the introduction to Maple 9.5 during the course "An introduction to perturbation methods" as organised by the "J.M. Burgerscentrum"; Delft, February 2006
• Wiskunde in Actie 2006 : A popular introduction to Differential Equations for high school students (PDF in Dutch); Delft, January 2006
• Advanced course on Linux management and networking at Maputu University; Mozambique, October 2003
• Course on Linux system administration + management of wireless and wired networks at Moi University Eldoret; Kenya, July 2003
• Course on "Parallel and distributed programming" at ITB Bandung; Indonesia, June 2002
• Course on "Installation, management and daily use of the Linux operating system" at ITB Bandung ; Indonesia, May 2001
• Java Programming : a 4 session course, organised for our local PhD students, Oct 2001
• Maple workheets for Wi1129 and Wi1157 : Introduction to Differential Equations
• Maple workheets for Wi4082 and Wi2084 : Introduction to Partial Differential Equations
• Java 3D: lecture at RIKZ, The Hague, Nov. 25 1999
• Presentation HPUX usergroup (upgrade HPUX 9 -> HPUX 10) in Dutch

Some Articles :

• Old Church Delft: Mathematical model for the bell motion (2004) (PDF format)
• New light on the old Pythagoras theorem :-) (2003) (PDF format)
• Contribution for the Eurosim '98 Conference in Helsinki : article and presentation (both in Postscript format)
• Master thesis: A comparison of several particle simulation methods (converted from TeX by TTH)
• Master thesis : A comparison of several particle simulation methods (Gzipped Postscript)
• Report (1994): Realisation of a realtime position determination system (Gzipped Postscript)

Software and Linux stuff :

• 2.6.20 kernel patch for the OTI6858 driver based on an older 2.6.18 driver found on the Gnokii Wiki
  The OTI6858 kernel driver supports the CA-42 Nokia cable with USB-ID 0x0ae0-0x6858 (and no other cables). The protocol is limited : only slow communication using software handshaking works reliable. Therefore "gnokii" doesn't work well and "gammu" only works (but very reliable !) with "connection = at19200" and "port = /dev/tts/USB0" in .gammurc.
  The "AT" commands do not support more advanced operations, but they makes it at least possible to read and write your phonebook and to download/upload sms messages and that is probably what most people want. If you want more you probably better use InfraRed, Bluetooth or a cable with full support for Linux (like the pl2303 based ones).
• Using 802.1x wireless networks under Linux at the TU Delft (May 2006)
• Compilation of problems and solutions with external software under Slackware"
• How to install Slackware Linux on a system with a SCSI disk for which there is no bootkernel included on the boot/install disk
• How to get hardware on the new ASUS P5GD1 motherboards working under Linux (Jan 2005)
• Using 802.11b wireless networks under Linux (June 2004)
• How to install Slackware 9.1 Linux on a Dell Latitude D500
  (i.e. harddisk, pcmcia, video, Xwindows, sound, network) (November 2004)
• How to install Linux on a Libretto 70 CT
  (i.e. large harddisk, hibernation, 16-bit sound) (March 2001)
• GEQUEL MySQL frontend at sourceforge
• GEQUEL MySQL frontend (local and latest version)
• FTP site with some of my Open Source software for Linux
• Inmos ANSI-C Transputer Toolset problem with icconf/icollect on Solaris 2.6
  (only occurs on Classic and UltraSparcs systems).

Miscellaneous topics :

• Precompiled Linux version of Open Source and OpenGL crrcsim Model Airplane Flight Simulator
  Had some trouble to compile it as GLUT and GLE were not (completely) installed on my Slackware 9.1, but got it working after compiling an old Glut version from the web. I decided to make this very nice program also accessible to people with less (or zero ;) programming skills, so here it is !
• Roberto's probleempje (Java)
• Java programming : An example for the TUDFINVOL project (an applet showing the airflow around an airplane wing) can be found here.
• SSH (Secure Shell) information and client programs for several platforms
• Homepage for the Eurosim 2001 conference (I was a member of the Organising Committee)

Some personal information :

Qualifications :

• 1986: Bachelor of Science (History and Politics), Nutsacademie, Rotterdam.
• 1991: Bachelor of Science (Education of Physics), Hogeschool Rotterdam en Omstreken.
• 1994: Master of Science (Education of Physics), Hogeschool Rotterdam en Omstreken.
• 1997: Engineer in Physics, Faculty of Applied Physics, Delft University of Technology.

Occupations :

• Responsible for mathematical student laboratories involving (Partial) Differential Equations with Maple and Matlab :
  • Wi1129-1157 Introduction to Differential Equations (former Wi125)
  • Wi2082-2084 Introduction to Partial Differential Equations (former Wi226)
  • Wi4082-84 id. for other than math students (former Wi426-7)
  • Wi3028 Mathematical Methods in Physics II (former Wi362)
  • Maple Laboratory for "Instellingspakket Differentiaal Vergelijkingen"
• Responsible for the Parallel Programming Laboratory with MPI on a Beowulf cluster which is part of the Parallel Programming Course of our group. (Wi4017)
• System design and management for the infrastructure of the Technical Mathematical Analysis group. This implies Unix system management and software design, installation and development.
• Helpdesk function for C and Java programming, Unix, Linux system management, Maple, LaTeX, Xfig, MPI and many other software packages under Unix.
• Particle Simulation methods: mainly Particle-Mesh and Tree-Code methods (subject of my master thesis).
• Parallel Algorithms on several platforms and environments (PVM and MPI on clusters of workstations, Parsytec transputers, etc.).
• Software development, also for the Open Source community (mostly Linux).

Personal interests :

• The best son in the world ( Mark ) is (mostly) cheering up our household since 1992.

• (One of) the Best Motorcycle(s) in the World is my F650GS (since 2008).

• The best guitar builder in the world made my personal favorite in 1998 (a Yamaha CG150CA).

• NOTE: Some people think my wife should be on this page as well, but she doesn't seem to be one of them ...

• My latest hobby : flying model airplanes (currently only in Dutch)
• My Webserver @ home (Giant)

One of my all-time favorites : the most flattering image of Bill Gates I know about ;-)

Hits since December 5, 2008 :