diff --git a/original_submission/images/gps.pdf b/original_submission/images/gps.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..3e8c8dea50bb86d975f3a4244b102bcdede9e503
Binary files /dev/null and b/original_submission/images/gps.pdf differ
diff --git a/original_submission/images/gps.tex b/original_submission/images/gps.tex
new file mode 100644
index 0000000000000000000000000000000000000000..c2ec294c631b3a0f2ff0103edce867f4d9cd5628
--- /dev/null
+++ b/original_submission/images/gps.tex
@@ -0,0 +1,43 @@
+\documentclass{standalone}
+
+\usepackage{fontspec}
+\usepackage{pst-geo}
+\usepackage{graphicx}
+
+\begin{document}
+
+\scalebox{0.6}{%
+\begin{pspicture}(-5,-4)(6,6)
+\psset{RotX=-23, RotZ=30, PHI=46.5833, THETA=0.3333,
+  visibility=false, Decran=15,
+  path=/usr/share/texlive/texmf-dist/tex/generic/pst-geo/data}
+% map
+\WorldMapThreeD[circles=false, blueEarth=false]
+\WorldMapThreeD[circles=false, visibility=true, opacity=0.8]
+% s1
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](-3,5){0.1}
+\psline[linecolor=red, linewidth=0.1](0.8,0.8)(-3,5)
+\rput[tl](-2.75,5.2){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_1$}}
+% s2
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](5.5,5.5){0.1}
+\psline[linecolor=red, linewidth=0.1](0.78,0.83)(5.5,5.5)
+\rput[tl](5.5,5.3){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_2$}}
+% s3
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](5,3){0.1}
+\psline[linecolor=red, linewidth=0.1](0.75,0.82)(5,3)
+\rput[tl](4.8,2.8){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_3$}}
+% s4
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](1.25,5){0.1}
+\psline[linecolor=red, linewidth=0.1](0.78,0.82)(1.25,5)
+\rput[tl](1.45,5.15){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_4$}}
+% s5
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](0.5,4.5){0.1}
+\psline[linecolor=red, linestyle=dashed, linewidth=0.1](0.8,0.82)(0.5,4.5)
+\rput[tl](-0.1,4.5){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_5$}}
+% curve for satelite s3
+\pscurve[linecolor=red, linestyle=dotted]{->}(5,3)(5.75,3.2)(4,1.5)
+% delay and distance for s1
+\rput[tl](-4.4,4.3){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$\{\Delta_1, d_1\}$}}
+\end{pspicture}}
+
+\end{document}
diff --git a/original_submission/sections/03-model.tex b/original_submission/sections/03-model.tex
index 01adacc3010f60fa972756d55c64b403e6bacbfd..c5ecaf492dc8990bc02f61bd6db27d9d4ad3306a 100644
--- a/original_submission/sections/03-model.tex
+++ b/original_submission/sections/03-model.tex
@@ -5,39 +5,7 @@ choices.
 
 \begin{figure}
 \centering
-\scalebox{0.6}{%
-\begin{pspicture}(-5,-4)(6,6)
-\psset{RotX=-23, RotZ=30, PHI=46.5833, THETA=0.3333,
-  visibility=false, Decran=15,
-  path=/usr/share/texlive/texmf-dist/tex/generic/pst-geo/data}
-% map
-\WorldMapThreeD[circles=false, blueEarth=false]
-\WorldMapThreeD[circles=false, visibility=true, opacity=0.8]
-% s1
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](-3,5){0.1}
-\psline[linecolor=red, linewidth=0.1](0.8,0.8)(-3,5)
-\rput[tl](-2.75,5.2){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_1$}}
-% s2
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](5.5,5.5){0.1}
-\psline[linecolor=red, linewidth=0.1](0.78,0.83)(5.5,5.5)
-\rput[tl](5.5,5.3){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_2$}}
-% s3
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](5,3){0.1}
-\psline[linecolor=red, linewidth=0.1](0.75,0.82)(5,3)
-\rput[tl](4.8,2.8){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_3$}}
-% s4
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](1.25,5){0.1}
-\psline[linecolor=red, linewidth=0.1](0.78,0.82)(1.25,5)
-\rput[tl](1.45,5.15){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_4$}}
-% s5
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](0.5,4.5){0.1}
-\psline[linecolor=red, linestyle=dashed, linewidth=0.1](0.8,0.82)(0.5,4.5)
-\rput[tl](-0.1,4.5){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_5$}}
-% curve for satelite s3
-\pscurve[linecolor=red, linestyle=dotted]{->}(5,3)(5.75,3.2)(4,1.5)
-% delay and distance for s1
-\rput[tl](-4.4,4.3){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$\{\Delta_1, d_1\}$}}
-\end{pspicture}}
+\includegraphics{images/gps.pdf}
 \caption{Trilateration: GPS receiver and satellites.}
 \label{fig:globe}
 \end{figure}
diff --git a/paper/Makefile b/paper/Makefile
index a09e6c9be6314ddc6ba838295a788120b896551c..e415d253228d6c7c7d63f6bc5584e0078773837e 100644
--- a/paper/Makefile
+++ b/paper/Makefile
@@ -1,6 +1,12 @@
-all:
-	xelatex main.tex
+all: images/gps.pdf
+	pdflatex main.tex
 	bibtex main
-	xelatex main.tex
-	xelatex main.tex
+	pdflatex main.tex
+	pdflatex main.tex
 	rm -f main.aux main.bbl main.blg main.log	main.out
+	
+gpsfig:
+	cd images && xelatex gps.tex
+	rm -f images/gps.aux
+	rm -f images/gps.log
+
diff --git a/paper/images/gps.pdf b/paper/images/gps.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..7b0014496bb65a35c81977e8656a6dd94055daa0
Binary files /dev/null and b/paper/images/gps.pdf differ
diff --git a/paper/images/gps.tex b/paper/images/gps.tex
new file mode 100644
index 0000000000000000000000000000000000000000..c2ec294c631b3a0f2ff0103edce867f4d9cd5628
--- /dev/null
+++ b/paper/images/gps.tex
@@ -0,0 +1,43 @@
+\documentclass{standalone}
+
+\usepackage{fontspec}
+\usepackage{pst-geo}
+\usepackage{graphicx}
+
+\begin{document}
+
+\scalebox{0.6}{%
+\begin{pspicture}(-5,-4)(6,6)
+\psset{RotX=-23, RotZ=30, PHI=46.5833, THETA=0.3333,
+  visibility=false, Decran=15,
+  path=/usr/share/texlive/texmf-dist/tex/generic/pst-geo/data}
+% map
+\WorldMapThreeD[circles=false, blueEarth=false]
+\WorldMapThreeD[circles=false, visibility=true, opacity=0.8]
+% s1
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](-3,5){0.1}
+\psline[linecolor=red, linewidth=0.1](0.8,0.8)(-3,5)
+\rput[tl](-2.75,5.2){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_1$}}
+% s2
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](5.5,5.5){0.1}
+\psline[linecolor=red, linewidth=0.1](0.78,0.83)(5.5,5.5)
+\rput[tl](5.5,5.3){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_2$}}
+% s3
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](5,3){0.1}
+\psline[linecolor=red, linewidth=0.1](0.75,0.82)(5,3)
+\rput[tl](4.8,2.8){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_3$}}
+% s4
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](1.25,5){0.1}
+\psline[linecolor=red, linewidth=0.1](0.78,0.82)(1.25,5)
+\rput[tl](1.45,5.15){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_4$}}
+% s5
+\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](0.5,4.5){0.1}
+\psline[linecolor=red, linestyle=dashed, linewidth=0.1](0.8,0.82)(0.5,4.5)
+\rput[tl](-0.1,4.5){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_5$}}
+% curve for satelite s3
+\pscurve[linecolor=red, linestyle=dotted]{->}(5,3)(5.75,3.2)(4,1.5)
+% delay and distance for s1
+\rput[tl](-4.4,4.3){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$\{\Delta_1, d_1\}$}}
+\end{pspicture}}
+
+\end{document}
diff --git a/paper/main.tex b/paper/main.tex
index 77dd4dcb4232be2bbfbd3b638420b49e2bb1a82d..a8496e84ad07d5948f6cc3445584c246389a1d51 100644
--- a/paper/main.tex
+++ b/paper/main.tex
@@ -26,12 +26,8 @@
 \acmPrice{15.00}
 
 \input{sections/00-header}
-
-\usepackage{fontspec}
-\usepackage{graphicx}
-\usepackage{xcolor}
-\usepackage{pst-geo}
 \usepackage{soul}
+\usepackage{xcolor}
 \usepackage[english]{babel}
 \usepackage{amsmath}
 \usepackage{amssymb}
diff --git a/paper/sections/03-model.tex b/paper/sections/03-model.tex
index 01adacc3010f60fa972756d55c64b403e6bacbfd..c5ecaf492dc8990bc02f61bd6db27d9d4ad3306a 100644
--- a/paper/sections/03-model.tex
+++ b/paper/sections/03-model.tex
@@ -5,39 +5,7 @@ choices.
 
 \begin{figure}
 \centering
-\scalebox{0.6}{%
-\begin{pspicture}(-5,-4)(6,6)
-\psset{RotX=-23, RotZ=30, PHI=46.5833, THETA=0.3333,
-  visibility=false, Decran=15,
-  path=/usr/share/texlive/texmf-dist/tex/generic/pst-geo/data}
-% map
-\WorldMapThreeD[circles=false, blueEarth=false]
-\WorldMapThreeD[circles=false, visibility=true, opacity=0.8]
-% s1
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](-3,5){0.1}
-\psline[linecolor=red, linewidth=0.1](0.8,0.8)(-3,5)
-\rput[tl](-2.75,5.2){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_1$}}
-% s2
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](5.5,5.5){0.1}
-\psline[linecolor=red, linewidth=0.1](0.78,0.83)(5.5,5.5)
-\rput[tl](5.5,5.3){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_2$}}
-% s3
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](5,3){0.1}
-\psline[linecolor=red, linewidth=0.1](0.75,0.82)(5,3)
-\rput[tl](4.8,2.8){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_3$}}
-% s4
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](1.25,5){0.1}
-\psline[linecolor=red, linewidth=0.1](0.78,0.82)(1.25,5)
-\rput[tl](1.45,5.15){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_4$}}
-% s5
-\pscircle[linecolor=red, fillcolor=red, fillstyle=solid](0.5,4.5){0.1}
-\psline[linecolor=red, linestyle=dashed, linewidth=0.1](0.8,0.82)(0.5,4.5)
-\rput[tl](-0.1,4.5){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$s_5$}}
-% curve for satelite s3
-\pscurve[linecolor=red, linestyle=dotted]{->}(5,3)(5.75,3.2)(4,1.5)
-% delay and distance for s1
-\rput[tl](-4.4,4.3){\fontsize{16pt}{16pt}\selectfont\textcolor{red}{$\{\Delta_1, d_1\}$}}
-\end{pspicture}}
+\includegraphics{images/gps.pdf}
 \caption{Trilateration: GPS receiver and satellites.}
 \label{fig:globe}
 \end{figure}