further work

thesis/sections/background.tex

@@ -16,43 +16,55 @@ Around day 14 of a typical cycle, ovulation occurs, marking the transition to th
 Ovulation refers to the rupture of the mature ovarian follicle and the release of an egg cell into the fallopian tube.
 Figure~\ref{fig:background_basic_female_reproductive_system} illustrates the female reproductive system,
 including the ovaries and the fallopian tubes.
-\\
-\begin{figure}
+
+\begin{figure}[htb]
     \centering
     \includegraphics[width=0.4\textwidth]{background_female_reproductive_organs}
     \caption{The basic female reproductive system~\cite{wikimedia_commons_basic_2019}.}
     \label{fig:background_basic_female_reproductive_system}
 \end{figure}
+
 Ovulation is triggered by a surge in \textbf{luteinizing hormone (LH)}
 and \textbf{follicle-stimulating hormone (FSH)}, following a peak in estradiol levels.
 As ovulation occurs, estradiol levels drop, progesterone levels begin to rise and a slight increase in body temperature
 (typically around 0.5°C) can be observed.
 This marks the beginning of the luteal phase.
-\\
+
 During the luteal phase, the endometrium thickens further, creating an optimal environment for embryo implantation.
 LH and FSH levels decrease, while progesterone remains elevated to support endometrial maintenance.
 If fertilization does not occur, progesterone levels drop, leading to the shedding of the endometrial lining along
 with the unfertilized egg.
 This process, known as menstruation, marks the beginning of a new cycle.
-\\
-The menstrual cycle typically lasts around 28 days, with ovulation occurring near the midpoint.
-However, variations, particularly in the follicular phase length, are common and can be influenced by factors such as stress, diet, exercise and age~\cite{silberstein_physiology_2000}.
-Figure~\ref{fig:background_menstrual_cycle_physiology} provides a detailed overview of the hormonal and physiological changes
-throughout the menstrual cycle.
 
-%TODO: implement a graph of a "normal" cycle with labeled phases for a better understanding of its structure
-
-\begin{figure}[htbp]
+\begin{figure}[htb]
     \centering
     \includegraphics[width=0.6\textwidth]{background_menstrual_cycle_physiology}
     \caption{Physiological changes during the menstrual cycle~\cite{pedroso_menstrual_2022}.}
     \label{fig:background_menstrual_cycle_physiology}
 \end{figure}
 
+The menstrual cycle typically lasts around 28 days, with ovulation occurring near the midpoint.
+However, variations, particularly in the follicular phase length, are common and can be influenced by factors such as stress, diet, exercise and age~\cite{silberstein_physiology_2000}.
+Figure~\ref{fig:background_menstrual_cycle_physiology} provides a detailed overview of the hormonal and physiological changes
+throughout the menstrual cycle.
+
+\begin{figure}[htb]
+    \centering
+    \includegraphics[width=0.9\textwidth]{background_labeled_cycle}
+    \caption{A cycles temperature curve with its phases and ovulation}
+    \label{fig:background_labeled_cycle}
+\end{figure}
+
+Figure~\ref{fig:background_labeled_cycle} shows the temperature curve over the course of a menstrual cycle with the
+menstruation, fertile phase and ovulation marked.
+It starts with a menstruation and ends just before the next menstruation.
+The follicular phase starts at the beginning and goes on until the ovulation.
+The luteal phase begins at the ovulation and continues until the next menstruation.
+
 Not every cycle results in ovulation—a phenomenon known as anovulation—which leads to a monophasic temperature pattern.
 Anovulation can have various causes, including hormonal imbalances, stress, or underlying health conditions~\cite{rosenfield_adolescent_2013}.
 
-\begin{figure}[htbp]
+\begin{figure}[htb]
     \centering
     \includegraphics[width=0.9\textwidth]{background_anovulatory_cycle}
     \caption{Example of a cycle without an ovulation and the resulting absence of a temperature rise}
@@ -71,14 +83,14 @@ Figure~\ref{fig:background_anovulation} shows a cycle that does not have an ovul
 To illustrate the diversity of real-world menstrual cycles, Figures~\ref{fig:background_long_cycle} and~\ref{fig:background_short_cycle}
 show examples of cycles that are significantly longer or shorter than a normative 28-day cycle.
 
-\begin{figure}[htbp]
+\begin{figure}[htb]
     \centering
     \includegraphics[width=0.9\textwidth]{background_long_cycle}
     \caption{Example of a long cycle with a length of 111 days}
     \label{fig:background_long_cycle}
 \end{figure}
 
-\begin{figure}[htbp]
+\begin{figure}[htb]
     \centering
     \includegraphics[width=0.9\textwidth]{background_short_cycle}
     \caption{Example of a short cycle with a length of 22 days}
@@ -97,7 +109,7 @@ rather than relying on population-wide assumptions.
 For a regular cycle pattern, sophisticated analysis or predictions are often not necessary, as the last ovulation day
 can reliably be used as the next.
 
-\begin{figure}[htbp]
+\begin{figure}[htb]
     \centering
     \includegraphics[width=0.9\textwidth]{background_irregular_cycle_example}
     \caption{Example of a woman with irregular menstrual rhythm}
@@ -355,7 +367,7 @@ linearly projected from the input and used to compute attention scores.
 \end{figure}
 
 
-Figure~\ref{fig:background_transformer_architecture} illustrates the original encoder-decoder model introduced by~\citeyear{vaswani_attention_2017}.
+Figure~\ref{fig:background_transformer_architecture} illustrates the original encoder-decoder model introduced by~\citeauthor{vaswani_attention_2017}.
 
 The Transformer architecture consists of two components: an \emph{Encoder} and a \emph{Decoder}.