Update latex/chapters/en/02_literature_review/index.tex

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

latex/chapters/01_introduction.tex

@@ -1,13 +1,23 @@
 \chapter{PENDAHULUAN}
+
 \section{Latar Belakang}
 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc consequat lectus dolor, a commodo odio suscipit nec. Aliquam posuere elit eget tellus dapibus, auctor ornare mi porttitor. Donec auctor aliquet nisl, quis convallis ligula rutrum id. Duis tortor ipsum, scelerisque vestibulum viverra eu, maximus vel mi. Nullam volutpat nunc et varius tempor. Vivamus convallis mi eros, aliquam semper dui tincidunt a. Morbi nunc dui, accumsan ac arcu nec, condimentum efficitur mauris. Etiam sed mauris semper, volutpat justo eu, placerat mauris. Suspendisse at erat eu arcu gravida mattis et id nunc. Aliquam malesuada magna odio, ac dictum erat vestibulum a. Mauris vel nisi sit amet elit tempor bibendum sit amet a velit. Morbi dignissim facilisis placerat.\par
 
+\begin{figure}
+    \centering
+    \includegraphics[width=0.5\linewidth]{frontmatter/img/slice1.jpg}
+    \caption{Enter Caption}
+    \label{fig:enter-label}
+\end{figure}
+
 Pellentesque vel accumsan lorem, id vulputate metus. Nulla mollis orci ante, et euismod erat venenatis eget. Proin tempus lobortis feugiat. Fusce vitae sem quis lacus iaculis dignissim ut eget turpis. Vivamus ut nisl in enim porttitor fringilla vel et mauris. Mauris quis porttitor magna. Pellentesque molestie viverra arcu at tincidunt. Maecenas non elit arcu.\par
 
 Etiam feugiat enim sit amet tortor interdum lobortis. Curabitur elementum faucibus sapien. Morbi eget facilisis lorem. In sed suscipit metus. Etiam porttitor, libero sit amet sodales hendrerit, libero dolor hendrerit nulla, sed convallis risus leo posuere metus. Cras gravida ac elit viverra ultrices. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia curae; Maecenas dictum urna elit, nec eleifend nulla mattis sit amet. Pellentesque suscipit metus vitae leo suscipit, a vehicula quam pretium. Sed eu est ut risus convallis hendrerit a vulputate justo. Nulla sollicitudin quam ut risus euismod, quis consequat dui mattis. Mauris id eros varius, pellentesque quam quis, venenatis tellus. Nulla vitae condimentum nisl. Vestibulum suscipit scelerisque dui, non posuere purus finibus nec. Nulla ultrices felis quis vestibulum porta. Suspendisse potenti.\par
 
 Nam tempus tincidunt interdum. Pellentesque at ligula ac massa semper efficitur vitae non ante. Suspendisse potenti. Cras vitae interdum erat, nec facilisis urna. Nulla commodo porttitor tellus non posuere. Vestibulum tristique ut urna quis porttitor. Sed pellentesque lectus sit amet ultrices aliquam. Aliquam erat volutpat. Nam dictum eu erat a mollis. Donec eget nulla vel risus aliquet suscipit sed at libero.\par
 
+
+
 Maecenas hendrerit pharetra bibendum. Donec ut tortor ac augue aliquam ullamcorper nec id eros. Quisque consectetur elementum ipsum vitae posuere. Sed ultricies ipsum nibh, vitae volutpat neque bibendum at. Morbi dictum metus eu bibendum malesuada. Nam scelerisque purus erat, id dictum nisl pretium vitae. Curabitur finibus commodo dui ac molestie. In sed sem ac dui dapibus ullamcorper. Aenean molestie nulla eu lorem maximus hendrerit. Vivamus viverra velit dolor, in vehicula eros facilisis at. Vivamus in rhoncus sem.
 \section{Lingkup Penelitian}
 \section{Tujuan Penelitian}

latex/chapters/02_literature_review.tex

@@ -1,6 +0,0 @@
-\chapter{TINJAUAN PUSTAKA DAN LANDASAN TEORI}
-\section{Tinjauan Pustaka}
-\section{Dasar Teori}
-\subsection{Short-Time Fourier Transform}
-\subsection{Machine Learning}
-% \subsubsection{Dolor}

latex/chapters/en/02_literature_review/index.tex

@@ -0,0 +1,10 @@
+\chapter{LITERATURE REVIEW AND THEORETICAL FOUNDATION}
+\section{Literature Review}
+\input{chapters/id/02_literature_review/literature_review/abdeljaber2017}
+
+\section{Theoretical Foundation}
+\input{chapters/id/02_literature_review/theoritical_foundation/stft}
+\input{chapters/id/02_literature_review/theoritical_foundation/machine_learning}
+
+\bigskip
+These theoretical foundations provide the methodological framework for implementing and evaluating the proposed damage localization system in this research. The combination of time-frequency analysis using STFT and classical machine learning classifiers enables an efficient and interpretable approach to structural health monitoring.

latex/chapters/en/02_literature_review/literature_review/abdeljaber2017.tex

@@ -0,0 +1,6 @@
+Traditional structural health monitoring methods often rely on hand-crafted features and manually tuned classifiers, which pose challenges in terms of generalization, reliability, and computational efficiency. As highlighted by [Author(s), Year], these approaches frequently require a trial-and-error process for feature and classifier selection, which not only reduces their robustness across structures but also hinders their deployment in real-time applications due to the computational load of the feature extraction phase.
+
+[Author(s), Year] introduced a CNN-based structural damage detection approach validated through a large-scale grandstand simulator at Qatar University. The structure, designed to replicate modern stadiums, was equipped with 30 accelerometers and subjected to controlled damage by loosening beam-to-girder bolts. Acceleration data, collected under band-limited white noise excitation and sampled at 1024 Hz, were segmented into 128-sample frames for training localized 1D CNNs—one per joint—creating a decentralized detection system. Across two experimental phases, involving both partial and full-structure monitoring, the method demonstrated high accuracy in damage localization, achieving a training classification error of just 0.54\%. While performance remained strong even under double-damage scenarios, some misclassifications occurred in symmetric or adjacent damage cases. Overall, the proposed method presents a highly efficient and accurate solution for real-time SHM applications.
+
+In the context of this thesis, the dataset and experimental setup introduced by [Author(s), Year] form the foundation for comparative analysis and algorithm testing. The authors have not only demonstrated the efficacy of a compact 1D CNN-based system for vibration-based structural damage detection, but also highlighted the value of using output-only acceleration data—a constraint shared in this thesis’s methodology. The decentralized design of their system, which allows each CNN to process only locally available data, is particularly aligned with this thesis's focus on efficient, sensor-level data analysis without requiring full-system synchronization. Furthermore, since the authors indicate plans to publicly release their dataset and source code, this thesis leverages that open data for applying alternative analysis methods such as support vector machines (SVM) or frequency domain feature extraction techniques, allowing a direct performance comparison between classical and deep learning-based SHM approaches. Thus, this work serves as both a benchmark reference and a data source in the development and evaluation of more accessible, lower-complexity alternatives for structural health monitoring systems.
+

latex/chapters/en/02_literature_review/theoritical_foundation/machine_learning.tex

@@ -0,0 +1,33 @@
+\subsection{Classification Algorithms}
+
+This research evaluates five classical machine learning algorithms to perform the classification task of damage localization. Each algorithm has different strengths and limitations, and their performance is benchmarked to identify the most suitable one for the given dataset.
+
+\subsubsection{Support Vector Machine (SVM)}
+
+SVM is a supervised learning algorithm that seeks an optimal hyperplane that separates data into classes with maximum margin. SVM performs well in high-dimensional spaces and is robust to overfitting, especially in cases with a clear margin of separation.
+
+SVM is appropriate for vibration signal classification due to its capability to handle nonlinear decision boundaries when equipped with kernel functions.
+
+\subsubsection{K-Nearest Neighbors (KNN)}
+
+KNN is a non-parametric, instance-based learning algorithm. It classifies a new data point based on the majority vote of its $k$ nearest neighbors in the feature space. Although simple, KNN can be effective when the data is well-distributed and class boundaries are smooth.
+
+Its performance is sensitive to the choice of $k$ and distance metric. For high-dimensional data like STFT features, dimensionality reduction or careful scaling may be required.
+
+\subsubsection{Decision Tree (DT)}
+
+Decision Tree is a rule-based classifier that splits data into classes using feature thresholds. It builds a tree where each internal node represents a feature, each branch a decision rule, and each leaf a class label. DTs are easy to interpret and can capture non-linear relationships.
+
+However, they are prone to overfitting, especially with noisy or small datasets.
+
+\subsubsection{Random Forest (RF)}
+
+Random Forest is an ensemble learning method based on constructing multiple decision trees during training and outputting the mode of the classes for classification. It improves the generalization capability of individual trees and reduces overfitting.
+
+RF is suitable for damage detection as it provides robustness to noise and variance, making it ideal for real-world sensor data.
+
+\subsubsection{Naïve Bayes (NB)}
+
+Naïve Bayes is a probabilistic classifier based on Bayes' theorem, assuming feature independence. Despite its simplicity, it often performs well in high-dimensional problems and with small datasets.
+
+NB is particularly effective when class-conditional independence holds approximately, which may occur when STFT features are well-separated in distribution.

latex/chapters/en/02_literature_review/theoritical_foundation/stft.tex

@@ -0,0 +1,11 @@
+\subsection{Short-Time Fourier Transform (STFT)}
+
+The Short-Time Fourier Transform (STFT) is a fundamental technique used to analyze non-stationary signals, such as those generated by structures under dynamic load or white noise excitation. While the traditional Fourier Transform provides frequency-domain information, it lacks time resolution. STFT overcomes this limitation by applying the Fourier Transform over short overlapping segments of the signal, thereby producing a time-frequency representation.
+
+Mathematically, the STFT of a signal $x(t)$ is given by:
+\begin{equation}
+X(t, \omega) = \int_{-\infty}^{\infty} x(\tau) w(\tau - t) e^{-j \omega \tau} d\tau
+\end{equation}
+where $w(\tau - t)$ is a window function centered at time $t$, and $\omega$ is the angular frequency.
+
+In this study, the STFT is employed to extract the time-frequency features of the vibration signals collected from the structure. These features are then used as inputs to machine learning classifiers. This process captures localized frequency content over time, which is crucial in identifying structural changes due to damage.

latex/chapters/id/02_literature_review/index.tex

@@ -0,0 +1,7 @@
+\chapter{TINJAUAN PUSTAKA DAN LANDASAN TEORI}
+\section{Tinjauan Pustaka}
+\input{chapters/id/02_literature_review/abdeljaber2017.tex}
+
+\section{Dasar Teori}
+\input{chapters/id/theoritical_foundation/stft.tex}
+\input{chapters/id/theoritical_foundation/machine_learning.tex}

latex/chapters/id/02_literature_review/literature_review/abdeljaber2017.tex

@@ -0,0 +1,3 @@
+Metode monitor kesehatan struktur (SHM) tradisional sering kali mengandalkan fitur yang dibuat secara manual dan pengklasifikasi (\textit{classifier}) yang diatur secara manual, yang menimbulkan tantangan dalam hal generalisasi, keandalan, dan efisiensi komputasi. Seperti yang disorot oleh \textcite{abdeljaber2017}, pendekatan-pendekatan ini umumnya memerlukan proses \textit{trial-and-error} dalam pemilihan fitur dan pengklasifikasi yang tidak hanya mengurangi ketangguhan metode tersebut di berbagai jenis struktur, tetapi juga menghambat penerapannya dalam pengaplikasian secara \textit{real-time} karena beban komputasi pada fase ekstraksi fitur.
+
+\textcite{abdeljaber2017} memperkenalkan pendekatan deteksi kerusakan struktur berbasis CNN yang divalidasi melalui \textit{large-scale grandstand simulator} di Qatar University. Struktur tersebut dirancang untuk mereplikasi stadion modern, dilengkapi dengan 30 akselerometer, dan dikenai kerusakan terkontrol melalui pelonggaran baut sambungan antara balok dan gelagar. Data percepatan yang dikumpulkan di bawah eksitasi \textit{band-limited white noise} dan disampel pada 1024 Hz, kemudian dibagi menjadi bingkai berukuran 128 sampel untuk melatih 1-D CNN yang dilokalkan—satu untuk setiap sambungan (\textit{joint})—menciptakan sistem deteksi terdesentralisasi. Dalam dua fase (skenario) eksperimen, yang melibatkan pemantauan sebagian dan seluruh struktur, metode ini menunjukkan akurasi tinggi dalam pelokalisasian kerusakan, dengan kesalahan klasifikasi saat pelatihan hanya sebesar 0.54\%. Meskipun performa tetap andal bahkan dalam skenario kerusakan ganda, beberapa salah klasifikasi terjadi pada kasus kerusakan yang simetris atau berdekatan. Secara keseluruhan, metode yang diusulkan ini menawarkan solusi yang sangat efisien dan akurat untuk aplikasi SHM secara \textit{real-time}.

latex/chapters/id/02_literature_review/literature_review/index.tex

@@ -0,0 +1,13 @@
+Metode monitor kesehatan struktur (SHM) tradisional sering kali mengandalkan fitur yang dibuat secara manual dan pengklasifikasi (\textit{classifier}) yang diatur secara manual, yang menimbulkan tantangan dalam hal generalisasi, keandalan, dan efisiensi komputasi. Seperti yang disorot oleh \textcite{abdeljaber2017}, pendekatan-pendekatan ini umumnya memerlukan proses \textit{trial-and-error} dalam pemilihan fitur dan pengklasifikasi yang tidak hanya mengurangi ketangguhan metode tersebut di berbagai jenis struktur, tetapi juga menghambat penerapannya dalam pengaplikasian secara \textit{real-time} karena beban komputasi pada fase ekstraksi fitur.
+
+\textcite{abdeljaber2017} memperkenalkan pendekatan deteksi kerusakan struktur berbasis CNN yang divalidasi melalui \textit{large-scale grandstand simulator} di Qatar University. Struktur tersebut dirancang untuk mereplikasi stadion modern, dilengkapi dengan 30 akselerometer, dan dikenai kerusakan terkontrol melalui pelonggaran baut sambungan antara balok dan gelagar. Data percepatan yang dikumpulkan di bawah eksitasi \textit{band-limited white noise} dan disampel pada 1024 Hz, kemudian dibagi menjadi bingkai berukuran 128 sampel untuk melatih 1-D CNN yang dilokalkan—satu untuk setiap sambungan (\textit{joint})—menciptakan sistem deteksi terdesentralisasi. Dalam dua fase (skenario) eksperimen, yang melibatkan pemantauan sebagian dan seluruh struktur, metode ini menunjukkan akurasi tinggi dalam pelokalisasian kerusakan, dengan kesalahan klasifikasi saat pelatihan hanya sebesar 0.54\%. Meskipun performa tetap andal bahkan dalam skenario kerusakan ganda, beberapa salah klasifikasi terjadi pada kasus kerusakan yang simetris atau berdekatan. Secara keseluruhan, metode yang diusulkan ini menawarkan solusi yang sangat efisien dan akurat untuk aplikasi SHM secara\textit{real-time}.
+
+\indent Metode berbasis getaran merupakan salah satu teknik paling umum dalam sistem pemantauan kesehatan struktur (SHM) karena kemampuannya dalam mendeteksi perubahan kondisi struktur secara non-destruktif. Pendekatan ini bergantung pada prinsip bahwa kerusakan pada suatu struktur, seperti kelonggaran sambungan atau penurunan kekakuan elemen, akan mengubah karakteristik dinamikanya, seperti frekuensi alami, bentuk mode, dan respons getaran terhadap eksitasi tertentu.
+
+\indent Salah satu jenis kerusakan struktural yang umum dijumpai dalam sambungan mekanis adalah kelonggaran baut akibat beban dinamis berulang, seperti getaran atau kejutan. Kondisi ini dapat menyebabkan penurunan integritas struktur dan berujung pada kegagalan sistem jika tidak terdeteksi sejak dini. Oleh karena itu, deteksi kelonggaran baut secara dini telah menjadi perhatian utama dalam bidang teknik sipil, mesin, maupun dirgantara [1, 11].
+
+\indent Teknik deteksi berbasis getaran terbukti efektif dalam mengidentifikasi tanda-tanda awal kelonggaran sambungan. Hal ini dilakukan dengan menganalisis perubahan spektrum frekuensi atau energi getaran antar kondisi sehat dan rusak. Dalam praktiknya, data getaran biasanya dikumpulkan melalui akselerometer yang dipasang pada titik-titik tertentu dalam struktur. Perubahan karakteristik getaran, seperti penurunan amplitudo, pergeseran frekuensi dominan, atau pola spektral lainnya, menjadi indikator keberadaan dan lokasi kerusakan.
+
+\indent Sejumlah penelitian telah menerapkan teknik ini dalam konteks struktur kompleks seperti sambungan multi-baut atau grid struktural. Misalnya, studi oleh Zhao et al. [10] menunjukkan bahwa perubahan rotasi kepala baut akibat kelonggaran dapat dikaitkan dengan pola getaran tertentu. Sementara itu, pendekatan yang lebih umum dalam domain teknik sipil adalah memanfaatkan sinyal akselerasi dari sambungan kolom atau balok sebagai masukan untuk sistem klasifikasi kerusakan berbasis pembelajaran mesin [12].
+
+\indent Kelebihan utama dari pendekatan berbasis getaran dibanding metode visual atau inspeksi manual adalah kemampuannya dalam mendeteksi kerusakan mikro secara lebih dini, bahkan sebelum tampak secara fisik. Namun, tantangan tetap ada, terutama dalam penempatan sensor yang optimal, pemrosesan sinyal, dan interpretasi pola dinamik yang kompleks dalam struktur grid. Oleh karena itu, kombinasi antara teknik transformasi sinyal seperti Short-Time Fourier Transform (STFT) dan algoritma pembelajaran mesin menjadi arah baru yang menjanjikan dalam riset SHM masa kini.

latex/chapters/id/02_literature_review/theoritical_foundation/machine_learning.tex

@@ -0,0 +1 @@
+\subsection{Machine Learning}

latex/chapters/id/02_literature_review/theoritical_foundation/stft.tex

@@ -0,0 +1 @@
+\subsection{Short-Time Fourier Transform}

latex/frontmatter/approval.tex

@@ -0,0 +1,65 @@
+% frontmatter/endorsement.tex
+\setmainfont{Times New Roman}
+\addcontentsline{toc}{chapter}{LEMBAR PERSETUJUAN TUGAS AKHIR}
+
+\begin{center}
+    \textbf{\Large LEMBAR PERSETUJUAN TUGAS AKHIR} \\[0.5em]
+    \textit{APPROVAL SHEET}
+\end{center}
+
+\vspace{1em}
+
+\renewcommand{\arraystretch}{1.2}
+\begin{tabular}{llp{10cm}}
+\textbf{Judul} & : & \thesistitle \\
+\textit{Title} &   & \\
+
+\textbf{Mahasiswa} & : & \studentname \\
+\textit{Student} &   & \\
+
+\textbf{Nomor Mahasiswa} & : &\studentid \\
+\textit{Student ID.} &   & \\
+
+\textbf{Dosen Pembimbing} & : & 1. \firstadvisor \\
+\textit{Advisors} &   & 2. \secondadvisor
+\end{tabular}
+
+\vspace{1em}
+\textbf{Telah disetujui oleh Tim Penguji:} \\
+\textit{Approved by the Committee on Oral Examination}
+
+\vspace{1em}
+\begin{tabular}{lp{5cm}}
+    \textbf{\firstadvisor} &:
+    % \vspace{2cm} % signature space
+    % \\[1em] % pull up next row
+    \\
+    \textit{Ketua Tim Penguji} & 
+    \noindent\makebox[5cm]{\hrulefill}\\[-0.5em]
+    \textit{\small Chair} & \small Yogyakarta, \dotfill 2020 
+    \\
+    \textbf{\secondadvisor} &:
+    % \vspace{2cm} % signature space
+    % \\[1em] % pull up next row
+    \\
+    \textit{Ketua Tim Penguji} & 
+    \noindent\makebox[5cm]{\hrulefill}\\[-0.5em]
+    \textit{\small Chair} & \small Yogyakarta, \dotfill 2020 \\
+\end{tabular}
+
+\vspace{1em}
+\noindent
+\textbf{Diterima dan disetujui sebagai persyaratan untuk memperoleh gelar Sarjana Teknik} \\
+\textit{Accepted in partial fulfillment of the requirements for the degree of Bachelor of Engineering}
+
+\vspace{2em}
+\begin{center}
+    \textbf{Ketua Program Studi} \\
+    \textit{Head of Department}
+\end{center}
+
+\vspace{3em}
+\begin{center}
+    \textbf{\headdepartement} \\
+    NIK. \headdepartementid
+\end{center}

latex/frontmatter/endorsement.tex

@@ -1,64 +1,7 @@
 % frontmatter/endorsement.tex
 \setmainfont{Times New Roman}
 
+\chapter*{LEMBAR PENGESAHAN TUGAS AKHIR}
 \begin{center}
-    \textbf{\Large LEMBAR PENGESAHAN TUGAS AKHIR} \\[0.5em]
-    \textit{APPROVAL SHEET}
-\end{center}
-
-\vspace{1em}
-
-\renewcommand{\arraystretch}{1.2}
-\begin{tabular}{llp{10cm}}
-\textbf{Judul} & : & \thesistitle \\
-\textit{Title} &   & \\
-
-\textbf{Mahasiswa} & : & \studentname \\
-\textit{Student} &   & \\
-
-\textbf{Nomor Mahasiswa} & : &\studentid \\
-\textit{Student ID.} &   & \\
-
-\textbf{Dosen Pembimbing} & : & 1. \firstadvisor \\
-\textit{Advisors} &   & 2. \secondadvisor
-\end{tabular}
-
-\vspace{1em}
-\textbf{Telah disetujui oleh Tim Penguji:} \\
-\textit{Approved by the Committee on Oral Examination}
-
-\vspace{1em}
-\begin{tabular}{lp{5cm}}
-    \textbf{\firstadvisor} &:
-    % \vspace{2cm} % signature space
-    % \\[1em] % pull up next row
-    \\
-    \textit{Ketua Tim Penguji} & 
-    \noindent\makebox[5cm]{\hrulefill}\\[-0.5em]
-    \textit{\small Chair} & \small Yogyakarta, \dotfill 2020 
-    \\
-    \textbf{\secondadvisor} &:
-    % \vspace{2cm} % signature space
-    % \\[1em] % pull up next row
-    \\
-    \textit{Ketua Tim Penguji} & 
-    \noindent\makebox[5cm]{\hrulefill}\\[-0.5em]
-    \textit{\small Chair} & \small Yogyakarta, \dotfill 2020 \\
-\end{tabular}
-
-\vspace{1em}
-\noindent
-\textbf{Diterima dan disetujui sebagai persyaratan untuk memperoleh gelar Sarjana Teknik} \\
-\textit{Accepted in partial fulfillment of the requirements for the degree of Bachelor of Engineering}
-
-\vspace{2em}
-\begin{center}
-    \textbf{Ketua Program Studi} \\
-    \textit{Head of Department}
-\end{center}
-
-\vspace{3em}
-\begin{center}
-    \textbf{\headdepartement} \\
-    NIK. \headdepartementid
+    {\normalsize\textit{ENDORSEMENT SHEET}}
 \end{center}

latex/frontmatter/originality.tex

@@ -0,0 +1,40 @@
+% frontmatter/originality.tex
+\setmainfont{Times New Roman}
+
+\chapter*{PERNYATAAN KEASLIAN}
+\addcontentsline{toc}{chapter}{PERNYATAAN KEASLIAN}
+% \begin{center}
+%     {\normalsize\textit{ORIGINALITY STATEMENT}}
+% \end{center}
+Saya yang bertanda tangan di bawah ini:
+\renewcommand{\arraystretch}{1.2}
+\begin{center}
+\begin{tabular}{llp{10cm}}
+\textbf{Nama} & : & \studentname \\
+\textbf{Nomor Mahasiswa} & : & \studentid \\
+\textbf{Judul} & : & \thesistitle \\
+\end{tabular}
+\end{center}
+Menyatakan dengan sebenarnya bahwa tugas akhir ini merupakan karya says sendiri. Apabila terdapat karya orang lain yang saya kutip, maka saya akan mencantumkan sumber secara jelas. Jika dikemudian hari ditemukan dengan ketidakbenaran dalam pernyataan in, maka saya bersedia menerima sanksi dengan aturan yang berlaku. Demikian pernyataan ini saya buat tanpa ada paksaan dari pihak mana pun.\par
+
+\begin{flushright}
+\begin{minipage}{0.5\textwidth}
+\centering
+Yogyakarta, \today \\[1em]
+Yang membuat pernyataan, \\[0.5cm] % space for signature
+% Materai box
+\hspace*{-2cm}% shift the box slightly left
+\begin{tabular}{@{}c@{}}
+  \fbox{
+    \begin{minipage}[c][2cm][c]{2.5cm}
+      \centering
+      Materai\\
+      6000
+    \end{minipage}
+  }
+\end{tabular}
+\\[1cm]
+% \rule{6cm}{0.4pt} % signature line
+Rifqi Damar Panuluh
+\end{minipage}
+\end{flushright}

latex/main.tex

@@ -19,9 +19,9 @@
 
 \maketitle
 \frontmatter
-\setcounter{page}{1}
-\theendorsementpage{toc}
-\originalitystatement{toc}
+\input{frontmatter/approval}\clearpage
+\input{frontmatter/originality}\clearpage
+\input{frontmatter/acknowledgement}\clearpage
 \tableofcontents
 \clearpage
 \mainmatter

latex/thesis.cls

@@ -9,6 +9,7 @@
 \LoadClass[a4paper,12pt,oneside]{book}
 
 % Load common packages
+\RequirePackage{polyglossia}
 \RequirePackage{fontspec}
 \RequirePackage{titlesec}
 \RequirePackage{fancyhdr}
@@ -20,6 +21,10 @@
 \RequirePackage{tocloft}
 \RequirePackage{tocbibind}
 
+% Polyglossia set language
+\setmainlanguage{bahasai}
+% \setotherlanguage{english}
+
 % Conditionally load the watermark package and settings
 \if@draftmark
   \RequirePackage{draftwatermark}
@@ -43,7 +48,7 @@
 \setmonofont{Courier New}
 
 % Metadata commands
-\input{metadata} % Load metadata from external file
+\input{metadata}
 
 \newcommand{\setthesisinfo}[7]{%
   \renewcommand{\thesistitle}{#1}%
@@ -55,7 +60,7 @@
   \renewcommand{\yearofsubmission}{#7}%
 }
 
-% Header and footer
+% % Header and footer
 \fancypagestyle{fancy}{%
     \fancyhf{}
     \fancyhead[R]{\nouppercase{\rightmark}}
@@ -73,11 +78,17 @@
 }
 
 % Chapter formatting
+\titlespacing{\chapter}{0pt}{0pt}{*1.5}
 \titleformat{\chapter}[display]
-  {\bfseries\Large\centering}
+  {\normalsize\bfseries\centering}
   {BAB~\Roman{chapter}} % << display format
   {1ex}
   {\MakeUppercase}
+\titleformat{\section}
+    {\normalsize\bfseries}{\thesection}{1em}{}
+
+\titleformat{\subsection}
+    {\normalsize\bfseries}{\thesubsection}{1em}{}
 
 % Ensure chapter reference in TOC matches
 \renewcommand{\cftchappresnum}{BAB~}
@@ -89,7 +100,7 @@
 \renewcommand{\maketitle}{\input{frontmatter/maketitle}}
 
 % Chapter & Section format
-\renewcommand{\cftchapfont}{\bfseries\MakeUppercase}
+\renewcommand{\cftchapfont}{\normalsize\MakeUppercase}
 % \renewcommand{\cftsecfont}{}
 % \renewcommand{\cftsubsecfont}{\itshape}
 % \renewcommand{\thesection}{\textup{\Roman{chapter}}.\arabic{section}}
@@ -99,36 +110,47 @@
 \setlength{\cftbeforechapskip}{0em}
 \setlength{\cftchapindent}{0pt}
 \setlength{\cftsecindent}{0em}
-\setlength{\cftsubsecindent}{3em}
-\setlength{\cftchapnumwidth}{4em}
-\setlength{\cftsecnumwidth}{2.5em}
+\setlength{\cftsubsecindent}{2.5em}
+\setlength{\cftchapnumwidth}{3.5em}
+\setlength{\cftsecnumwidth}{3.5em}
 \setlength{\cftsubsecnumwidth}{2.5em}
+\setlength{\cftfignumwidth}{5em}
+\setlength{\cfttabnumwidth}{4em}
 \renewcommand \cftchapdotsep{4.5} % https://tex.stackexchange.com/a/273764
 \renewcommand{\cftchapleader}{\normalfont\cftdotfill{\cftsecdotsep}}
 \renewcommand{\cftchappagefont}{\normalfont}
+\renewcommand{\cftfigpresnum}{\figurename~}
+\renewcommand{\cfttabpresnum}{\tablename~}
 
 % Ensure TOC and References Respect Custom Numbering
 \renewcommand{\thechapter}{\Roman{chapter}}
 \renewcommand\thesection{\arabic{chapter}.\arabic{section}}
 
+% Change figure numbering to include chapter (e.g., Figure 1.1, 1.2...)
+\renewcommand{\thefigure}{\arabic{chapter}.\arabic{figure}}
+\renewcommand{\thetable}{\arabic{chapter}.\arabic{table}}
+\renewcommand{\theequation}{\arabic{chapter}.\arabic{equation}}
 
-% Table of Contents (TOC) Title styling
-\renewcommand{\contentsname}{DAFTAR ISI}
-\renewcommand{\cfttoctitlefont}{\bfseries\MakeUppercase}
+% Table of Content (TOC) Title styling
+\renewcommand{\cfttoctitlefont}{\hfill\bfseries\MakeUppercase}
 \renewcommand{\cftaftertoctitle}{\hfill} % https://tex.stackexchange.com/a/255699/394075
+% List of Figures (LOF) Title styling
+\renewcommand{\cftloftitlefont}{\hfill\bfseries\MakeUppercase}
+\renewcommand{\cftafterloftitle}{\hfill}
+% List of Tables (LOT) Title styling
+\renewcommand{\cftlottitlefont}{\hfill\bfseries\MakeUppercase}
+\renewcommand{\cftafterlottitle}{\hfill}
+% \renewcommand{\cfttoctitlefont}{\bfseries\MakeUppercase}
 % \renewcommand{\cftaftertoctitle}{\vskip 2em}
 
-% Frontmatter Macro (Toggle TOC Inclusion)
-\newcommand{\frontmattersection}[3]{%
-  \centering
-  \ifstrequal{#1}{toc}{\thispagestyle{fancyplainfrontmatter}\addcontentsline{toc}{chapter}{#2}}{\chapter*{#2}}%
-  \input{frontmatter/#3}
-  \clearpage
-}
-
-% Wrapper Command for Each Page
-\newcommand{\theendorsementpage}[1]{\frontmattersection{#1}{Pengesahan}{endorsement}}
-\newcommand{\originalitystatement}[1]{\frontmattersection{#1}{Pernyataan Keaslian}{originality}}
-
+% % Apply a custom fancyhdr layout only on the first page of each \chapter, and use no header/footer elsewhere
+% % \let\oldchapter\chapter
+% % \renewcommand{\chapter}{%
+% %   \cleardoublepage
+% %   \pagestyle{fancyplainchapter}%
+% %   \oldchapter
+% %   \thispagestyle{fancyplainchapter} % ensure chapter start page uses it
+% %   \pagestyle{fancyplain}% switch for subsequent pages
+% % }
 
 \endinput