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Access count:#!/usr/bin/perl $log='counts.log'; $iplog='ips.log'; $lastip='lastip.log'; $host=$ENV{'REMOTE_ADDR'}; $path=$ENV{'DOCUMENT_URI'}||$ENV{'REQUEST_URI'}; print "Content-Type: text/html\n\n"; my $sameip=0; open(LASTIP,"+<$lastip"); flock(LASTIP,2); $lastrec=; ($lasthost,$lastpath,undef)=split(/\|/,$lastrec); if (($lasthost eq $host) && ($lastpath eq $path)){$sameip=1;} if ($sameip eq 0) { seek(LASTIP,0,0); truncate(LASTIP,0); $lastrec=join('|',$host,$path,"\n"); print LASTIP $lastrec; } flock(LASTIP,8); close(LASTIP); open(CNT,"+< $log"); flock(CNT,2); @count=; for($el=0;$el<=$#count;$el++) { ($ct,$rec,undef)=split(/\|/,$count[$el]); if($fnd=($path eq $rec)) { if ($sameip eq 0) {$count[$el]=join('|',++$ct,$rec,"\n");} else {$count[$el]=join('|',$ct,$rec,"\n");} last; } } push(@count,join('|',$ct='1',$path,"\n")) unless $fnd; seek(CNT,0,0); truncate(CNT,0); print CNT sort{($b=~/(\d+)/)[0]<=>($a=~/(\d+)/)[0]} @count; flock(CNT,8); close(CNT); print $ct; my $found=0; open(IPR,"< $iplog"); flock(IPR,1); while() { chomp; last if $found=($_ eq $host); } flock(IPR,8); close(IPR); unless($found) { open(IPW,">> $iplog"); flock(IPW,2); print IPW $host,"\n"; flock(IPW,8); close(IPW); }

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Supervised Ph.D-Theses:

W. Fleischer: Charakterisierung des asymptotischen Verhaltens der Lösungen von Funktional-Differentialgleichungen mit Hilfe zweiseitiger Lösungen, Technical University of Berlin, 1974.

W. Desch: Nichtlineare Funktional-Differentialgleichungen im Raum L-unendlich, University of Graz, 1978.

K. Kunisch: Neutrale Funktional-Differentialgleichungen und Halbgruppentheorie, Technical University of Graz, 1978.

G. Peichl: Funktionaldifferentialgleichungen und die Theorie von Neustadt, Technical University of Graz, 1978.

M. Opitz: Dualität bei linearen Systemen, University of Würzburg, 1980.

E. Fuchs: Entartung bei linearen autonomen Funktionaldifferentialgleichungen, University of Würzburg, 1980.

H. Reinbacher: Steuerbarkeit für neutrale Funktionaldifferentialgleichungen, University of Graz, 1982.

S. Thaller: Translationshalbgruppen und Funktionaldifferentialgleichungen, University of Graz, 1982.

Kangpei Zhang: On a neutral equation with nonatomic D-operator, University of Graz, 1983.

G. Propst: Piecewise linear approximation for hereditary control problems, University of Graz, 1985.

R. Peer: Mathematische Modellierung von grundlegenden Regelungsvorgängen im Herz-Kreislauf-System, University of Graz, 1988.

W. Prager: A one parameter family of spline-type schemes for approximation of delay systems, University of Graz, 1989.

W. Huyer: A size structured population model with dispersion, University of Graz, 1991.

M. A. H. Esmail: The linear quadratic regulator problem for degenerate systems in Hilbert spaces, Minia University, El-Minia, Egypt, 1994.

Sri Wahyuni: Similarity of matrices over principal ideal domains, University of Graz, 1996.

I. Groselj: Global optimization by clustering: an algorithm, University of Graz, 1996.

S. Lafer: Mathematical modelling of the baroreceptor loop, University of Graz, 1996.

S. Timischl: A global model for the cardiovascular and respiratory system, University of Graz, 1998.

Abd el Rahman Aly Hussein: Application of the Trotter-Kato theorem to collocation methods, Minia University, El-Minia, Egypt, 1999.

Ari Suparwanto: Optimal control of almost decoupled systems, University of Graz, 2001.