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\node [style=circle] (0) at (-5, 5) {Simulations};
\node [style=circle] (1) at (5, 5) {Curves};
\node [style=circle] (3) at (-5, -5) {Data};
\node [style=circle] (4) at (5, -5) {};
\node [style=circle] (5) at (0, 0) {SARS-CoV-2};
\node [style=circle] (6) at (11, 0) {};
\node [style=circle] (7) at (11, 0) {};
\node [style=circle] (8) at (11, 0) {Bodies};
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\draw [style=edge] (1) to (4);
\draw [style=edge] (4) to (3);
\draw (5) to (8);
\draw [style=edge, in=180, out=90, loop] (0) to ();

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% from this example
\geometry{a4paper, landscape, margin=1cm}
{\huge Operational loop of COVID-19}\\
David Benqu\'e\\
Work in Progress: \today
% \section*{Operational loop of COVID-19}
\begin{tikzpicture}[>={Stealth[scale=2]}, % arrow head
shorten > = 3pt,
node distance = 5cm and 4cm,
el/.style = {inner sep=5pt, font=\normalsize, align=center, sloped},
state/.style = {minimum size=2.5cm, circle, draw=black, fill=white}, %node styles
sub/.style = {rectangle, xshift=2.5cm}
% every label/.append style = {font=\tiny}, unused node labels
\node (simulations) [state, align=center] {Models\\\&\\Simulations};
\node (data) [state, right=of simulations] {Data};
\node (virus) [state, left=of simulations, yshift=-3.7cm] {SARS-CoV-2};
\node (curves) [state,below=of simulations] {Curves};
\node (policy) [state,below=of data, align=center] {Policy\\Interventions};
\node (bodies) [state, right=of policy, yshift=3.7cm] {Populations};
\node (futures1) [sub, left=of simulations,yshift=0.7cm] {Thousands};
\node (futures2) [sub, left=of simulations] {of};
\node (futures3) [sub, left=of simulations, yshift=-0.7cm] {Futures};
(simulations) edge [in=110,out=70,max distance=1.5cm,loop] node[el,above] {Runs and re-runs} (simulations)
(virus) edge [in=110,out=70,max distance=1.5cm,loop] node[el, above] {Mutates} (virus)
(virus) edge [bend left=5] node[el, above, pos=0.15] {Infects} (bodies)
(bodies) edge [bend left=5] node[el, below, pos=0.15] {Antibodies} (virus)
(bodies) edge [bend right=10] node [el, above] {Counted} (data)
(data) edge [bend right=10] node[el,above] {Basis for} (simulations)
(simulations) edge [bend right=10] node[el, below] {Produce more\\Look like} (data)
(simulations) edge [bend right=10] node[el, below] {Represented as} (curves)
(data) edge [bend left=10] node[el, below, pos=0.2] {Represented as} (curves)
(policy) edge [bend left=10] node[el, below, pos=0.2] {Assessed with} (simulations)
(simulations) edge [bend left=10] node[el, above, pos=0.3] {Basis for} (policy)
(policy) edge [bend right=10] node[el, below] {Constrain} (bodies)
(policy) edge [bend right=10] node[el, below] {What gets counted} (data)
(curves) edge [bend right=10] node[el, below] {Legitimise} (policy)
(curves) edge [bend left=10] node[el, below] {Produce as shape\\e.g. waves, peaks, etc} (virus)
(simulations) edge [] node [el] {} (futures1)
(simulations) edge [] node [el] {} (futures2)
(simulations) edge [] node [el] {} (futures3);
Inspired by:\\
Dinno, Alexis. 2007. `Loop Analysis of Causal Feedback in Epidemiology: An Illustration Relating to Urban Neighborhoods and Resident Depressive Experiences`. \emph{Social Science \& Medicine} 65 (10): 204357.

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vertex/.style={circle,draw,minimum size=1.5em},
edge/.style={->,> = latex'}
% vertices
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% TiKZ style file generated by TikZiT. You may edit this file manually,
% but some things (e.g. comments) may be overwritten. To be readable in
% TikZiT, the only non-comment lines must be of the form:
% \tikzstyle{NAME}=[PROPERTY LIST]
% Node styles
\tikzstyle{circle}=[fill=white, draw=black, shape=circle, minimum size=2cm]
% Edge styles
\tikzstyle{edge}=[->, >=latex]

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The source code is available at:\\
\href{}{CC BY-SA 2.0}

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# Operational Loops of COVID-19
Diagrams commissioned by Jussi Parikka and Tony D. Sampson for their paper:
T. D. Sampson and J. Parikka. The Operational Loops of a Pandemic.*Cultural Politics*, 17(1):5568, Mar. 2021. ISSN1743-2197. [doi: 10.1215/17432197-8797529](
## Structure
[main.tex](main.tex) is the main file that produces LaTeX output as a PDF in [main.pdf](main.pdf). It imports the diagrams from their respective folders.
### Loop 1: Scalar logics
Found the [scalar_logics](scalar_logics/) folder.
SVG file drawn with Inkscape with text formatted by LaTeX following [Gilles Castel's method](
### Loop 2: Phase portrait diagram
Found in the [tornado](tornado/) folder.
Data visualisation in Python. Reproducing this graph requires installing the Python dependencies listed in [pyproject.toml](pyproject.toml). With [Poetry]( installed, run the following from the root of this repository:
poetry install
### Loop 3: Model Operations
Found in the [futures_loop](futures_loop/) folder.
Diagram drawn in LaTeX / TikZ. This diagram was not included in the Sampson & Parikka paper.
### Loop 4: Pandemic Wave
Found in the [wave_loop](wave_loop/) folder.
Diagram drawn in LaTeX / TikZ. This diagram was not included in the Sampson & Parikka paper.