riset-teknologi-informasi/slide/slide-06-system-design.md

---
marp: true
paginate: true
class: bagian-ii
header: 'RTI — Riset Teknologi Informasi | Universitas Putra Bangsa Kebumen'
footer: 'Helmi Bahar Alim, S.Kom., M.Kom. | 2026'
---





<style>
/* UPB Theme (inline) */

/*
  ============================================================
  UPB MARP THEME — Riset Teknologi Informasi
  Universitas Putra Bangsa (UPB), Kebumen
  Fak. Sains & Teknologi | Prodi Teknik Informatika
  ------------------------------------------------------------
  Penggunaan di frontmatter slide:
    theme: upb
    class: bagian-ii          ← opsional; ganti warna Bagian
  
  Kelas per Bagian:
    (kosong / default) = Bagian I  — Biru   #2563EB
    bagian-ii          = Bagian II — Hijau  #059669
    bagian-iii         = Bagian III — Oranye #d97706
    bagian-iv          = Bagian IV — Ungu   #7c3aed

  Kelas layout khusus (gunakan via <!-- _class: ... -->):
    cover              = Cover / halaman judul
    section-header     = Pembatas antar-topik
    integrative        = Bab 8 (UTS — gradien biru-ungu)
    fullcircle         = Bab 16 penutup (gradien gelap)
  ============================================================
*/

/* ============================================================
   1. CSS CUSTOM PROPERTIES — DEFAULT (Bagian I · Biru)
   ============================================================ */
section {
  --accent:        #2563EB;
  --accent-dark:   #1e3a5f;
  --accent-light:  #eff6ff;
  --accent-border: #bfdbfe;
  --cover-grad:    linear-gradient(135deg, #1e3a5f 0%, #2563EB 100%);
  --cover-sub:     #bfdbfe;
  --cover-meta:    #93c5fd;

  font-family: 'Segoe UI', Arial, sans-serif;
  font-size: 1.1em;
  color: #1e293b;
  padding: 40px 60px;
}

/* ============================================================
   2. VARIAN WARNA PER BAGIAN
   ============================================================ */

/* Bagian II — Hijau */
section.bagian-ii {
  --accent:        #059669;
  --accent-dark:   #064e3b;
  --accent-light:  #ecfdf5;
  --accent-border: #a7f3d0;
  --cover-grad:    linear-gradient(135deg, #064e3b 0%, #059669 100%);
  --cover-sub:     #a7f3d0;
  --cover-meta:    #6ee7b7;
}

/* Bagian III — Oranye */
section.bagian-iii {
  --accent:        #d97706;
  --accent-dark:   #78350f;
  --accent-light:  #fffbeb;
  --accent-border: #fde68a;
  --cover-grad:    linear-gradient(135deg, #78350f 0%, #d97706 100%);
  --cover-sub:     #fde68a;
  --cover-meta:    #fcd34d;
}

/* Bagian IV — Ungu */
section.bagian-iv {
  --accent:        #7c3aed;
  --accent-dark:   #3b0764;
  --accent-light:  #f5f3ff;
  --accent-border: #ddd6fe;
  --cover-grad:    linear-gradient(135deg, #3b0764 0%, #7c3aed 100%);
  --cover-sub:     #ddd6fe;
  --cover-meta:    #c4b5fd;
}

/* ============================================================
   3. LAYOUT: COVER
   ============================================================ */
section.cover {
  background: var(--cover-grad);
  color: white;
  justify-content: center;
  text-align: center;
}

/* Logo dimuat dari CSS — tidak perlu tag img di markdown */
section.cover::before {
  content: '';
  display: block;
  width: 90px;
  height: 90px;
  background: white url('theme/logo-upb.png') center / contain no-repeat;
  border-radius: 8px;
  padding: 6px;
  margin: 0 auto 14px;
  box-sizing: border-box;
}

section.cover h1 {
  color: white;
  font-size: 2em;
  margin-bottom: 8px;
  border-bottom: none;
}

section.cover h2 {
  color: var(--cover-sub);
  font-size: 1.1em;
  font-weight: normal;
}

section.cover p  { color: var(--cover-meta); font-size: 0.85em; }
section.cover strong { color: white; }

/* ============================================================
   4. LAYOUT: SECTION HEADER (pembatas topik)
   ============================================================ */
section.section-header {
  background: var(--accent);
  color: white;
  justify-content: center;
  text-align: center;
}

section.section-header h1 {
  color: white;
  font-size: 2.5em;
  border-bottom: none;
}

section.section-header h2 { color: rgba(255, 255, 255, 0.85); }

/* ============================================================
   5. LAYOUT: INTEGRATIVE (Bab 8 — UTS Checkpoint)
   ============================================================ */
section.integrative {
  background: linear-gradient(135deg, #1e3a5f 0%, #7c3aed 100%);
  color: white;
  justify-content: center;
  text-align: center;
}

section.integrative::before {
  content: '';
  display: block;
  width: 90px;
  height: 90px;
  background: white url('theme/logo-upb.png') center / contain no-repeat;
  border-radius: 8px;
  padding: 6px;
  margin: 0 auto 14px;
  box-sizing: border-box;
}

section.integrative h1 {
  color: white;
  font-size: 2.2em;
  border-bottom: none;
}

section.integrative h2   { color: #ddd6fe; font-size: 1.1em; }
section.integrative p    { color: #c4b5fd; font-size: 0.85em; }
section.integrative strong { color: white; }

/* ============================================================
   6. LAYOUT: FULLCIRCLE (Bab 16 — Penutup)
   ============================================================ */
section.fullcircle {
  background: linear-gradient(135deg, #1e293b 0%, #1e3a5f 50%, #1e293b 100%);
  color: white;
  justify-content: center;
  text-align: center;
}

section.fullcircle h1 {
  color: #ddd6fe;
  font-size: 2.2em;
  border-bottom: 3px solid #7c3aed;
}

section.fullcircle blockquote {
  border-left: 5px solid #7c3aed;
  background: rgba(255, 255, 255, 0.08);
  color: #ddd6fe;
  font-style: italic;
}

/* ============================================================
   7. ELEMEN KONTEN — menggunakan CSS vars dari bagian
   ============================================================ */

h1 {
  color: var(--accent);
  border-bottom: 3px solid var(--accent);
  padding-bottom: 8px;
}

h2 { color: var(--accent-dark); font-size: 1.3em; }
h3 { color: var(--accent);      font-size: 1.05em; }

blockquote {
  border-left: 5px solid var(--accent);
  background: var(--accent-light);
  padding: 12px 20px;
  margin: 16px 0;
  color: var(--accent-dark);
  font-style: italic;
  border-radius: 0 8px 8px 0;
}

table { font-size: 0.82em; width: 100%; border-collapse: collapse; }
th    { background: var(--accent); color: white; padding: 8px 12px; }
td    { padding: 6px 12px; border-bottom: 1px solid var(--accent-border); }
tr:nth-child(even) td { background: var(--accent-light); }

code {
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

pre {
  background: #f1f5f9;
  color: #1e293b;
  padding: 16px;
  border-radius: 8px;
  border-left: 4px solid var(--accent-border);
}

ul li, ol li { margin-bottom: 6px; line-height: 1.6; }

/* ============================================================
   8. HELPER CLASSES
   ============================================================ */

/* Status / penekanan */
.warn  { color: #d97706; font-weight: bold; }
.good  { color: #059669; font-weight: bold; }
.bad   { color: #dc2626; font-weight: bold; }

/* Kotak pernyataan akhir */
.final {
  background: #fef3c7;
  border-left: 5px solid #d97706;
  padding: 14px 20px;
  border-radius: 0 8px 8px 0;
  font-size: 1.1em;
}

/* Kotak highlight */
.highlight-box {
  background: var(--accent);
  color: white;
  padding: 16px 20px;
  border-radius: 8px;
  margin: 12px 0;
}

/* Kotak checkpoint bab 8 */
.checkpoint {
  background: #f5f3ff;
  border: 2px solid #7c3aed;
  border-radius: 8px;
  padding: 16px 24px;
  margin: 16px 0;
}

/* ============================================================
   9. PAGINATION & HEADER/FOOTER
   ============================================================ */
section::after {
  font-size: 0.7em;
  color: #94a3b8;
}

section[data-marpit-advanced-background] > div:last-child { padding: 40px 60px; }
</style>

<style>
/* UPB Theme (inline) */

/*
  ============================================================
  UPB MARP THEME — Riset Teknologi Informasi
  Universitas Putra Bangsa (UPB), Kebumen
  Fak. Sains & Teknologi | Prodi Teknik Informatika
  ------------------------------------------------------------
  Penggunaan di frontmatter slide:
        class: bagian-ii          ← opsional; ganti warna Bagian
  
  Kelas per Bagian:
    (kosong / default) = Bagian I  — Biru   #2563EB
    bagian-ii          = Bagian II — Hijau  #059669
    bagian-iii         = Bagian III — Oranye #d97706
    bagian-iv          = Bagian IV — Ungu   #7c3aed

  Kelas layout khusus (gunakan via <!-- _class: ... -->):
    cover              = Cover / halaman judul
    section-header     = Pembatas antar-topik
    integrative        = Bab 8 (UTS — gradien biru-ungu)
    fullcircle         = Bab 16 penutup (gradien gelap)
  ============================================================
*/

/* ============================================================
   1. CSS CUSTOM PROPERTIES — DEFAULT (Bagian I · Biru)
   ============================================================ */
section {
  --accent:        #2563EB;
  --accent-dark:   #1e3a5f;
  --accent-light:  #eff6ff;
  --accent-border: #bfdbfe;
  --cover-grad:    linear-gradient(135deg, #1e3a5f 0%, #2563EB 100%);
  --cover-sub:     #bfdbfe;
  --cover-meta:    #93c5fd;

  font-family: 'Segoe UI', Arial, sans-serif;
  font-size: 1.1em;
  color: #1e293b;
  padding: 40px 60px;
}

/* ============================================================
   2. VARIAN WARNA PER BAGIAN
   ============================================================ */

/* Bagian II — Hijau */
section.bagian-ii {
  --accent:        #059669;
  --accent-dark:   #064e3b;
  --accent-light:  #ecfdf5;
  --accent-border: #a7f3d0;
  --cover-grad:    linear-gradient(135deg, #064e3b 0%, #059669 100%);
  --cover-sub:     #a7f3d0;
  --cover-meta:    #6ee7b7;
}

/* Bagian III — Oranye */
section.bagian-iii {
  --accent:        #d97706;
  --accent-dark:   #78350f;
  --accent-light:  #fffbeb;
  --accent-border: #fde68a;
  --cover-grad:    linear-gradient(135deg, #78350f 0%, #d97706 100%);
  --cover-sub:     #fde68a;
  --cover-meta:    #fcd34d;
}

/* Bagian IV — Ungu */
section.bagian-iv {
  --accent:        #7c3aed;
  --accent-dark:   #3b0764;
  --accent-light:  #f5f3ff;
  --accent-border: #ddd6fe;
  --cover-grad:    linear-gradient(135deg, #3b0764 0%, #7c3aed 100%);
  --cover-sub:     #ddd6fe;
  --cover-meta:    #c4b5fd;
}

/* ============================================================
   3. LAYOUT: COVER
   ============================================================ */
section.cover {
  background: var(--cover-grad);
  color: white;
  justify-content: center;
  text-align: center;
}

/* Logo dimuat dari CSS — tidak perlu tag img di markdown */
section.cover::before {
  content: '';
  display: block;
  width: 90px;
  height: 90px;
  background: white url('theme/logo-upb.png') center / contain no-repeat;
  border-radius: 8px;
  padding: 6px;
  margin: 0 auto 14px;
  box-sizing: border-box;
}

section.cover h1 {
  color: white;
  font-size: 2em;
  margin-bottom: 8px;
  border-bottom: none;
}

section.cover h2 {
  color: var(--cover-sub);
  font-size: 1.1em;
  font-weight: normal;
}

section.cover p  { color: var(--cover-meta); font-size: 0.85em; }
section.cover strong { color: white; }

/* ============================================================
   4. LAYOUT: SECTION HEADER (pembatas topik)
   ============================================================ */
section.section-header {
  background: var(--accent);
  color: white;
  justify-content: center;
  text-align: center;
}

section.section-header h1 {
  color: white;
  font-size: 2.5em;
  border-bottom: none;
}

section.section-header h2 { color: rgba(255, 255, 255, 0.85); }

/* ============================================================
   5. LAYOUT: INTEGRATIVE (Bab 8 — UTS Checkpoint)
   ============================================================ */
section.integrative {
  background: linear-gradient(135deg, #1e3a5f 0%, #7c3aed 100%);
  color: white;
  justify-content: center;
  text-align: center;
}

section.integrative::before {
  content: '';
  display: block;
  width: 90px;
  height: 90px;
  background: white url('theme/logo-upb.png') center / contain no-repeat;
  border-radius: 8px;
  padding: 6px;
  margin: 0 auto 14px;
  box-sizing: border-box;
}

section.integrative h1 {
  color: white;
  font-size: 2.2em;
  border-bottom: none;
}

section.integrative h2   { color: #ddd6fe; font-size: 1.1em; }
section.integrative p    { color: #c4b5fd; font-size: 0.85em; }
section.integrative strong { color: white; }

/* ============================================================
   6. LAYOUT: FULLCIRCLE (Bab 16 — Penutup)
   ============================================================ */
section.fullcircle {
  background: linear-gradient(135deg, #1e293b 0%, #1e3a5f 50%, #1e293b 100%);
  color: white;
  justify-content: center;
  text-align: center;
}

section.fullcircle h1 {
  color: #ddd6fe;
  font-size: 2.2em;
  border-bottom: 3px solid #7c3aed;
}

section.fullcircle blockquote {
  border-left: 5px solid #7c3aed;
  background: rgba(255, 255, 255, 0.08);
  color: #ddd6fe;
  font-style: italic;
}

/* ============================================================
   7. ELEMEN KONTEN — menggunakan CSS vars dari bagian
   ============================================================ */

h1 {
  color: var(--accent);
  border-bottom: 3px solid var(--accent);
  padding-bottom: 8px;
}

h2 { color: var(--accent-dark); font-size: 1.3em; }
h3 { color: var(--accent);      font-size: 1.05em; }

blockquote {
  border-left: 5px solid var(--accent);
  background: var(--accent-light);
  padding: 12px 20px;
  margin: 16px 0;
  color: var(--accent-dark);
  font-style: italic;
  border-radius: 0 8px 8px 0;
}

table { font-size: 0.82em; width: 100%; border-collapse: collapse; }
th    { background: var(--accent); color: white; padding: 8px 12px; }
td    { padding: 6px 12px; border-bottom: 1px solid var(--accent-border); }
tr:nth-child(even) td { background: var(--accent-light); }

code {
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

pre {
  background: #f1f5f9;
  color: #1e293b;
  padding: 16px;
  border-radius: 8px;
  border-left: 4px solid var(--accent-border);
}

ul li, ol li { margin-bottom: 6px; line-height: 1.6; }

/* ============================================================
   8. HELPER CLASSES
   ============================================================ */

/* Status / penekanan */
.warn  { color: #d97706; font-weight: bold; }
.good  { color: #059669; font-weight: bold; }
.bad   { color: #dc2626; font-weight: bold; }

/* Kotak pernyataan akhir */
.final {
  background: #fef3c7;
  border-left: 5px solid #d97706;
  padding: 14px 20px;
  border-radius: 0 8px 8px 0;
  font-size: 1.1em;
}

/* Kotak highlight */
.highlight-box {
  background: var(--accent);
  color: white;
  padding: 16px 20px;
  border-radius: 8px;
  margin: 12px 0;
}

/* Kotak checkpoint bab 8 */
.checkpoint {
  background: #f5f3ff;
  border: 2px solid #7c3aed;
  border-radius: 8px;
  padding: 16px 24px;
  margin: 16px 0;
}

/* ============================================================
   9. PAGINATION & HEADER/FOOTER
   ============================================================ */
section::after {
  font-size: 0.7em;
  color: #94a3b8;
}

section[data-marpit-advanced-background] > div:last-child { padding: 40px 60px; }
</style>

<style>
/* UPB Theme (inline) */

/*
  ============================================================
  UPB MARP THEME — Riset Teknologi Informasi
  Universitas Putra Bangsa (UPB), Kebumen
  Fak. Sains & Teknologi | Prodi Teknik Informatika
  ------------------------------------------------------------
  Penggunaan di frontmatter slide:
        class: bagian-ii          ← opsional; ganti warna Bagian
  
  Kelas per Bagian:
    (kosong / default) = Bagian I  — Biru   #2563EB
    bagian-ii          = Bagian II — Hijau  #059669
    bagian-iii         = Bagian III — Oranye #d97706
    bagian-iv          = Bagian IV — Ungu   #7c3aed

  Kelas layout khusus (gunakan via <!-- _class: ... -->):
    cover              = Cover / halaman judul
    section-header     = Pembatas antar-topik
    integrative        = Bab 8 (UTS — gradien biru-ungu)
    fullcircle         = Bab 16 penutup (gradien gelap)
  ============================================================
*/

/* ============================================================
   1. CSS CUSTOM PROPERTIES — DEFAULT (Bagian I · Biru)
   ============================================================ */
section {
  --accent:        #2563EB;
  --accent-dark:   #1e3a5f;
  --accent-light:  #eff6ff;
  --accent-border: #bfdbfe;
  --cover-grad:    linear-gradient(135deg, #1e3a5f 0%, #2563EB 100%);
  --cover-sub:     #bfdbfe;
  --cover-meta:    #93c5fd;

  font-family: 'Segoe UI', Arial, sans-serif;
  font-size: 1.1em;
  color: #1e293b;
  padding: 40px 60px;
}

/* ============================================================
   2. VARIAN WARNA PER BAGIAN
   ============================================================ */

/* Bagian II — Hijau */
section.bagian-ii {
  --accent:        #059669;
  --accent-dark:   #064e3b;
  --accent-light:  #ecfdf5;
  --accent-border: #a7f3d0;
  --cover-grad:    linear-gradient(135deg, #064e3b 0%, #059669 100%);
  --cover-sub:     #a7f3d0;
  --cover-meta:    #6ee7b7;
}

/* Bagian III — Oranye */
section.bagian-iii {
  --accent:        #d97706;
  --accent-dark:   #78350f;
  --accent-light:  #fffbeb;
  --accent-border: #fde68a;
  --cover-grad:    linear-gradient(135deg, #78350f 0%, #d97706 100%);
  --cover-sub:     #fde68a;
  --cover-meta:    #fcd34d;
}

/* Bagian IV — Ungu */
section.bagian-iv {
  --accent:        #7c3aed;
  --accent-dark:   #3b0764;
  --accent-light:  #f5f3ff;
  --accent-border: #ddd6fe;
  --cover-grad:    linear-gradient(135deg, #3b0764 0%, #7c3aed 100%);
  --cover-sub:     #ddd6fe;
  --cover-meta:    #c4b5fd;
}

/* ============================================================
   3. LAYOUT: COVER
   ============================================================ */
section.cover {
  background: var(--cover-grad);
  color: white;
  justify-content: center;
  text-align: center;
}

/* Logo dimuat dari CSS — tidak perlu tag img di markdown */
section.cover::before {
  content: '';
  display: block;
  width: 90px;
  height: 90px;
  background: white url('theme/logo-upb.png') center / contain no-repeat;
  border-radius: 8px;
  padding: 6px;
  margin: 0 auto 14px;
  box-sizing: border-box;
}

section.cover h1 {
  color: white;
  font-size: 2em;
  margin-bottom: 8px;
  border-bottom: none;
}

section.cover h2 {
  color: var(--cover-sub);
  font-size: 1.1em;
  font-weight: normal;
}

section.cover p  { color: var(--cover-meta); font-size: 0.85em; }
section.cover strong { color: white; }

/* ============================================================
   4. LAYOUT: SECTION HEADER (pembatas topik)
   ============================================================ */
section.section-header {
  background: var(--accent);
  color: white;
  justify-content: center;
  text-align: center;
}

section.section-header h1 {
  color: white;
  font-size: 2.5em;
  border-bottom: none;
}

section.section-header h2 { color: rgba(255, 255, 255, 0.85); }

/* ============================================================
   5. LAYOUT: INTEGRATIVE (Bab 8 — UTS Checkpoint)
   ============================================================ */
section.integrative {
  background: linear-gradient(135deg, #1e3a5f 0%, #7c3aed 100%);
  color: white;
  justify-content: center;
  text-align: center;
}

section.integrative::before {
  content: '';
  display: block;
  width: 90px;
  height: 90px;
  background: white url('theme/logo-upb.png') center / contain no-repeat;
  border-radius: 8px;
  padding: 6px;
  margin: 0 auto 14px;
  box-sizing: border-box;
}

section.integrative h1 {
  color: white;
  font-size: 2.2em;
  border-bottom: none;
}

section.integrative h2   { color: #ddd6fe; font-size: 1.1em; }
section.integrative p    { color: #c4b5fd; font-size: 0.85em; }
section.integrative strong { color: white; }

/* ============================================================
   6. LAYOUT: FULLCIRCLE (Bab 16 — Penutup)
   ============================================================ */
section.fullcircle {
  background: linear-gradient(135deg, #1e293b 0%, #1e3a5f 50%, #1e293b 100%);
  color: white;
  justify-content: center;
  text-align: center;
}

section.fullcircle h1 {
  color: #ddd6fe;
  font-size: 2.2em;
  border-bottom: 3px solid #7c3aed;
}

section.fullcircle blockquote {
  border-left: 5px solid #7c3aed;
  background: rgba(255, 255, 255, 0.08);
  color: #ddd6fe;
  font-style: italic;
}

/* ============================================================
   7. ELEMEN KONTEN — menggunakan CSS vars dari bagian
   ============================================================ */

h1 {
  color: var(--accent);
  border-bottom: 3px solid var(--accent);
  padding-bottom: 8px;
}

h2 { color: var(--accent-dark); font-size: 1.3em; }
h3 { color: var(--accent);      font-size: 1.05em; }

blockquote {
  border-left: 5px solid var(--accent);
  background: var(--accent-light);
  padding: 12px 20px;
  margin: 16px 0;
  color: var(--accent-dark);
  font-style: italic;
  border-radius: 0 8px 8px 0;
}

table { font-size: 0.82em; width: 100%; border-collapse: collapse; }
th    { background: var(--accent); color: white; padding: 8px 12px; }
td    { padding: 6px 12px; border-bottom: 1px solid var(--accent-border); }
tr:nth-child(even) td { background: var(--accent-light); }

code {
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 2px 6px;
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}

pre {
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  color: #1e293b;
  padding: 16px;
  border-radius: 8px;
  border-left: 4px solid var(--accent-border);
}

ul li, ol li { margin-bottom: 6px; line-height: 1.6; }

/* ============================================================
   8. HELPER CLASSES
   ============================================================ */

/* Status / penekanan */
.warn  { color: #d97706; font-weight: bold; }
.good  { color: #059669; font-weight: bold; }
.bad   { color: #dc2626; font-weight: bold; }

/* Kotak pernyataan akhir */
.final {
  background: #fef3c7;
  border-left: 5px solid #d97706;
  padding: 14px 20px;
  border-radius: 0 8px 8px 0;
  font-size: 1.1em;
}

/* Kotak highlight */
.highlight-box {
  background: var(--accent);
  color: white;
  padding: 16px 20px;
  border-radius: 8px;
  margin: 12px 0;
}

/* Kotak checkpoint bab 8 */
.checkpoint {
  background: #f5f3ff;
  border: 2px solid #7c3aed;
  border-radius: 8px;
  padding: 16px 24px;
  margin: 16px 0;
}

/* ============================================================
   9. PAGINATION & HEADER/FOOTER
   ============================================================ */
section::after {
  font-size: 0.7em;
  color: #94a3b8;
}

section[data-marpit-advanced-background] > div:last-child { padding: 40px 60px; }
</style>

<style>
/* UPB Theme (inline) */

/*
  ============================================================
  UPB MARP THEME — Riset Teknologi Informasi
  Universitas Putra Bangsa (UPB), Kebumen
  Fak. Sains & Teknologi | Prodi Teknik Informatika
  ------------------------------------------------------------
  Penggunaan di frontmatter slide:
        class: bagian-ii          ← opsional; ganti warna Bagian
  
  Kelas per Bagian:
    (kosong / default) = Bagian I  — Biru   #2563EB
    bagian-ii          = Bagian II — Hijau  #059669
    bagian-iii         = Bagian III — Oranye #d97706
    bagian-iv          = Bagian IV — Ungu   #7c3aed

  Kelas layout khusus (gunakan via <!-- _class: ... -->):
    cover              = Cover / halaman judul
    section-header     = Pembatas antar-topik
    integrative        = Bab 8 (UTS — gradien biru-ungu)
    fullcircle         = Bab 16 penutup (gradien gelap)
  ============================================================
*/

/* ============================================================
   1. CSS CUSTOM PROPERTIES — DEFAULT (Bagian I · Biru)
   ============================================================ */
section {
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  --accent-dark:   #1e3a5f;
  --accent-light:  #eff6ff;
  --accent-border: #bfdbfe;
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  font-size: 1.1em;
  color: #1e293b;
  padding: 40px 60px;
}

/* ============================================================
   2. VARIAN WARNA PER BAGIAN
   ============================================================ */

/* Bagian II — Hijau */
section.bagian-ii {
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  --cover-sub:     #a7f3d0;
  --cover-meta:    #6ee7b7;
}

/* Bagian III — Oranye */
section.bagian-iii {
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  --accent-dark:   #78350f;
  --accent-light:  #fffbeb;
  --accent-border: #fde68a;
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  --cover-sub:     #fde68a;
  --cover-meta:    #fcd34d;
}

/* Bagian IV — Ungu */
section.bagian-iv {
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  --accent-border: #ddd6fe;
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  --cover-sub:     #ddd6fe;
  --cover-meta:    #c4b5fd;
}

/* ============================================================
   3. LAYOUT: COVER
   ============================================================ */
section.cover {
  background: var(--cover-grad);
  color: white;
  justify-content: center;
  text-align: center;
}

/* Logo dimuat dari CSS — tidak perlu tag img di markdown */
section.cover::before {
  content: '';
  display: block;
  width: 90px;
  height: 90px;
  background: white url('theme/logo-upb.png') center / contain no-repeat;
  border-radius: 8px;
  padding: 6px;
  margin: 0 auto 14px;
  box-sizing: border-box;
}

section.cover h1 {
  color: white;
  font-size: 2em;
  margin-bottom: 8px;
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}

section.cover h2 {
  color: var(--cover-sub);
  font-size: 1.1em;
  font-weight: normal;
}

section.cover p  { color: var(--cover-meta); font-size: 0.85em; }
section.cover strong { color: white; }

/* ============================================================
   4. LAYOUT: SECTION HEADER (pembatas topik)
   ============================================================ */
section.section-header {
  background: var(--accent);
  color: white;
  justify-content: center;
  text-align: center;
}

section.section-header h1 {
  color: white;
  font-size: 2.5em;
  border-bottom: none;
}

section.section-header h2 { color: rgba(255, 255, 255, 0.85); }

/* ============================================================
   5. LAYOUT: INTEGRATIVE (Bab 8 — UTS Checkpoint)
   ============================================================ */
section.integrative {
  background: linear-gradient(135deg, #1e3a5f 0%, #7c3aed 100%);
  color: white;
  justify-content: center;
  text-align: center;
}

section.integrative::before {
  content: '';
  display: block;
  width: 90px;
  height: 90px;
  background: white url('theme/logo-upb.png') center / contain no-repeat;
  border-radius: 8px;
  padding: 6px;
  margin: 0 auto 14px;
  box-sizing: border-box;
}

section.integrative h1 {
  color: white;
  font-size: 2.2em;
  border-bottom: none;
}

section.integrative h2   { color: #ddd6fe; font-size: 1.1em; }
section.integrative p    { color: #c4b5fd; font-size: 0.85em; }
section.integrative strong { color: white; }

/* ============================================================
   6. LAYOUT: FULLCIRCLE (Bab 16 — Penutup)
   ============================================================ */
section.fullcircle {
  background: linear-gradient(135deg, #1e293b 0%, #1e3a5f 50%, #1e293b 100%);
  color: white;
  justify-content: center;
  text-align: center;
}

section.fullcircle h1 {
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  font-size: 2.2em;
  border-bottom: 3px solid #7c3aed;
}

section.fullcircle blockquote {
  border-left: 5px solid #7c3aed;
  background: rgba(255, 255, 255, 0.08);
  color: #ddd6fe;
  font-style: italic;
}

/* ============================================================
   7. ELEMEN KONTEN — menggunakan CSS vars dari bagian
   ============================================================ */

h1 {
  color: var(--accent);
  border-bottom: 3px solid var(--accent);
  padding-bottom: 8px;
}

h2 { color: var(--accent-dark); font-size: 1.3em; }
h3 { color: var(--accent);      font-size: 1.05em; }

blockquote {
  border-left: 5px solid var(--accent);
  background: var(--accent-light);
  padding: 12px 20px;
  margin: 16px 0;
  color: var(--accent-dark);
  font-style: italic;
  border-radius: 0 8px 8px 0;
}

table { font-size: 0.82em; width: 100%; border-collapse: collapse; }
th    { background: var(--accent); color: white; padding: 8px 12px; }
td    { padding: 6px 12px; border-bottom: 1px solid var(--accent-border); }
tr:nth-child(even) td { background: var(--accent-light); }

code {
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

pre {
  background: #f1f5f9;
  color: #1e293b;
  padding: 16px;
  border-radius: 8px;
  border-left: 4px solid var(--accent-border);
}

ul li, ol li { margin-bottom: 6px; line-height: 1.6; }

/* ============================================================
   8. HELPER CLASSES
   ============================================================ */

/* Status / penekanan */
.warn  { color: #d97706; font-weight: bold; }
.good  { color: #059669; font-weight: bold; }
.bad   { color: #dc2626; font-weight: bold; }

/* Kotak pernyataan akhir */
.final {
  background: #fef3c7;
  border-left: 5px solid #d97706;
  padding: 14px 20px;
  border-radius: 0 8px 8px 0;
  font-size: 1.1em;
}

/* Kotak highlight */
.highlight-box {
  background: var(--accent);
  color: white;
  padding: 16px 20px;
  border-radius: 8px;
  margin: 12px 0;
}

/* Kotak checkpoint bab 8 */
.checkpoint {
  background: #f5f3ff;
  border: 2px solid #7c3aed;
  border-radius: 8px;
  padding: 16px 24px;
  margin: 16px 0;
}

/* ============================================================
   9. PAGINATION & HEADER/FOOTER
   ============================================================ */
section::after {
  font-size: 0.7em;
  color: #94a3b8;
}

section[data-marpit-advanced-background] > div:last-child { padding: 40px 60px; }
</style>

<!-- _class: cover bagian-ii -->


# Bab 6 — System Design sebagai Experimental Artifact

## Sistem sebagai Alat Uji, Bukan Tujuan Akhir

*Pertemuan 6 (M6) &nbsp;|&nbsp; Sub-CPMK 2.2 &nbsp;|&nbsp; CPMK02 &nbsp;|&nbsp; CPL06*

Fase: **Designing** (M5–M7) &nbsp;·&nbsp; Bagian II: Measurement & Design

**Universitas Putra Bangsa** &nbsp;|&nbsp; Fak. Sains & Teknologi &nbsp;·&nbsp; Prodi Teknik Informatika

---

## Agenda Pertemuan 6

1. Perubahan paradigma: sistem sebagai alat uji hipotesis
2. System as Experiment Model
3. 4 Prinsip desain sistem riset: Traceability, Modularity, Controllability, Measurability
4. Mapping RQ → System Component
5. Pentingnya control & isolation variabel
6. Dokumentasi arsitektur sebagai bagian metodologi
7. Cognitive Traps & Studi Kasus
8. Output Praktis: Diagram arsitektur + mapping ke variabel

---

## Capaian Pembelajaran

Setelah pertemuan ini, mahasiswa mampu:

- Menjelaskan perbedaan antara **sistem engineered** dan **sistem sebagai artefak penelitian**
- Memetakan **RQ → System Component** secara eksplisit
- Merancang sistem yang memenuhi **4 prinsip**: Traceability, Modularity, Controllability, Measurability
- Menjelaskan pentingnya **variabel control** dan **isolation** dalam desain eksperimen
- Mendokumentasikan arsitektur sebagai bagian metodologi riset

> Sub-CPMK 2.2 → Merancang sistem sebagai artefak eksperimen (CPL06)

---

## Perubahan Paradigma Fundamental

| Pertanyaan | Engineering View | Research View |
|-----------|-----------------|--------------|
| **Untuk apa sistem ini dibangun?** | Agar pengguna bisa menggunakannya | Agar hipotesis bisa diuji |
| **Ukuran keberhasilan utama** | Sistem berjalan sesuai requirement | Hipotesis terjawab secara signifikan |
| **Yang diprioritaskan** | Fitur lengkap, UX bagus | Kontrol variabel, reproducibility |
| **Arsitektur dirancang berdasarkan** | Kebutuhan fungsional | RQ dan variabel eksperimen |
| **Dokumentasi terpenting** | User manual, API docs | Experimental setup, parameter log |

> "Dalam penelitian, sistem bukan dibangun untuk digunakan, tetapi untuk **membuktikan sesuatu secara ilmiah**."

---

## System as Experiment Model

*RQ menentukan arsitektur, bukan sebaliknya*

<div class="highlight-box">

**Research Question** &darr; Variable (Independent & Dependent) &darr; System Component (apa yang perlu dibangun?) &darr; Experimental Setup (bagaimana dijalankan?) &darr; **Output / Measured Data**

</div>

Setiap komponen sistem harus bisa dijawab: **"Komponen ini mendukung variabel/hipotesis yang mana?"**

---

## 4 Prinsip Desain Sistem Riset

### 1. Traceability — setiap komponen bisa ditelusuri ke RQ

Setiap modul atau komponen sistem harus punya kaitan eksplisit ke variabel dalam RQ.

<div class="highlight-box">

**RQ:** "Apakah attention mechanism meningkatkan F1-score NER?"
- Modul A: BiLSTM encoder (baseline)
- Modul B: Attention layer (variabel independen)
- Modul C: CRF decoder (output)
- Modul D: Evaluasi F1 per entity (variabel dependen)

</div>

Jika ada komponen yang tidak bisa ditelusuri ke RQ → pertanyakan apakah komponen itu diperlukan.

---

## 4 Prinsip Desain Sistem Riset (lanjutan)

### 2. Modularity — komponen yang diuji harus bisa diswap

Sistem harus dirancang sehingga variabel yang diuji bisa diubah secara independen.

**Monolith:** Semua logika dalam satu fungsi besar → tidak bisa isolasi perubahan

**Modular:** Setiap komponen terpisah, bisa diganti tanpa mengubah yang lain

### 3. Controllability — bisa mengontrol kondisi eksperimen

Harus bisa mengatur: seed random, hyperparameter, ukuran dataset, split ratio — secara konsisten dan reproducible.

### 4. Measurability — output bisa langsung diukur

Output sistem harus langsung menghasilkan data dalam format yang bisa dievaluasi dengan metrik yang sudah didefinisikan.

---

## Mapping RQ → System Component

*Template traceability matrix*

| RQ / Hipotesis | Variabel | Komponen Sistem | Cara MengukurNya |
|----------------|---------|----------------|-----------------|
| H1: attention meningkatkan F1 NER | IndepVar: ada/tidaknya attention layer | Modul attention (swappable) | F1 per entity type |
| | DepVar: F1-score NER | Evaluation module | Seqeval library |
| H2: batch size pengaruhi training speed | IndepVar: batch size (16/32/64/128) | Training config (YAML) | Training time per epoch |
| | DepVar: convergence speed | Logger | Loss curve per epoch |

> **Traceability matrix** ini adalah bagian wajib dari bab Metodologi dalam laporan riset.

---

## Control & Isolation Variabel

**Prinsip eksperimen ilmiah:** Ubah **satu variabel pada satu waktu**, kontrol semua yang lain.

**Variabel yang harus dikontrol (contoh ML):**

| Variabel Kontrol | Cara Mengontrol |
|-----------------|----------------|
| Dataset split | Fixed seed, stratified split |
| Hyperparameter | Config file yang di-version control |
| Hardware | Sama untuk semua eksperimen |
| Random seed | Set di semua library (numpy, torch, sklearn) |
| Data preprocessing | Pipeline identik untuk semua kondisi |
| Jumlah epoch/run | Fixed, sama untuk semua kondisi |

> Mengubah lebih dari satu variabel dalam satu eksperimen → tidak bisa mengidentifikasi variabel mana yang menyebabkan perubahan output.

---

<!-- _class: section-header bagian-ii -->

# Cognitive Traps
## Bab 6 — System Design

---

## Cognitive Traps — Bab 6

**"Semakin kompleks sistem, semakin besar kontribusi"**
Kompleksitas bukan kontribusi. Sistem sederhana yang terkontrol dengan baik lebih kuat secara ilmiah daripada sistem kompleks yang tidak bisa diisolasi variabelnya. Reviewer menilai kontrol eksperimen, bukan jumlah fitur.

**"Arsitektur bisa ditentukan setelah RQ"**
Dalam engineering, RQ ≠ yang menentukan arsitektur. Dalam research, RQ **adalah** yang menentukan arsitektur. Desain tanpa traceability ke RQ akan sulit dipertahankan saat sidang.

**"Sistem monolith lebih mudah, jadi pakai itu saja"**
Monolith tidak bisa diisolasi. Jika Anda tidak bisa mematikan/menghidupkan satu komponen tanpa mengubah yang lain, Anda tidak bisa menguji pengaruh variabel secara independen.

---

## Studi Kasus 1 — Monolith vs Modular (Basic)

**Konteks:** Model ML untuk text classification. RQ: "Apakah pre-trained embedding meningkatkan F1?"

**Desain monolith:**
```python
def train_and_evaluate(data):
    # 500 baris kode: preprocessing + embedding + model + training + eval
    # semua dalam satu fungsi
```
Masalah: tidak bisa mengisolasi efek embedding. Preprocessing berubah → semua berubah.

**Desain modular:**
```python
preprocessor = TextPreprocessor(config)  # modul terpisah
embedder = EmbeddingLayer(type="pretrained" | "random")  # swappable
model = ClassificationModel(embedder)    # depend on embedder interface
evaluator = F1Evaluator()                # independent
```

*Sekarang bisa swap `type="pretrained"` ↔ `type="random"` tanpa mengubah yang lain.*

---

## Studi Kasus 2 — Multiple Feature Change (Advanced)

**Konteks:** Peneliti melaporkan: "Model baru 15% lebih baik dari baseline."

**Masalah — terlalu banyak perubahan sekaligus:**
- Menambahkan attention mechanism ✚
- Mengubah optimizer dari Adam ke AdamW ✚
- Menambahkan dropout layer ✚
- Mengubah learning rate schedule ✚

Pertanyaan reviewer: *"Peningkatan 15% berasal dari yang mana?"*

**Pendekatan yang benar: Ablation Study**

| Eksperimen | Attention | AdamW | Dropout | F1-score |
|-----------|-----------|-------|---------|----------|
| Baseline | – | – | – | 74.2% |
| + Attention | ✓ | – | – | 81.5% (+7.3%) |
| + AdamW | ✓ | ✓ | – | 82.1% (+0.6%) |
| + Dropout | ✓ | ✓ | ✓ | 85.7% (+3.6%) |

*Sekarang jelas: attention yang berkontribusi terbesar.*

---

## Research vs Engineering — System Design

| Aspek | Engineering | Research |
|-------|------------|---------|
| Tujuan rancangan | Sistem berfungsi | Hipotesis dapat diuji |
| Kompleksitas | Bisa kompleks jika diperlukan | Sesederhana mungkin agar terkontrol |
| Dokumentasi | User manual | Experimental setup (reproducibility) |
| Perubahan komponen | Untuk perbaikan fitur | Untuk ablation study |
| Evaluasi | Acceptance testing | Uji statistik vs baseline |
| Portability | Nice to have | Wajib (reproducibility) |

---

## Ringkasan Pertemuan 6

| Konsep | Inti |
|--------|------|
| Paradigma shift | Sistem **bukan** tujuan → alat uji hipotesis |
| System as Experiment | RQ → Variable → Component → Setup → Output |
| 4 Prinsip | Traceability · Modularity · Controllability · Measurability |
| Mapping RQ | Setiap komponen harus bisa ditelusuri ke variabel |
| Control | Ubah 1 variabel, kontrol semua → ablation study |
| Dokumentasi | Traceability matrix wajib dalam metodologi |

---

## Final Statement & Output Praktis

<div class="final">
"Dalam penelitian, sistem bukan dibangun untuk digunakan, tetapi untuk membuktikan sesuatu secara ilmiah."
</div>

### Output Praktis M6

Buat **2 dokumen**:

1. **Diagram Arsitektur Sistem** (Mermaid/draw.io) — annotated dengan label variabel:
   - Tandai: `[IndepVar]`, `[DepVar]`, `[Control]` pada setiap komponen
2. **Traceability Matrix** (tabel: RQ/Hipotesis → Variabel → Komponen → Cara Ukur)

*Dokumen ini menjadi bagian "System Design" dalam bab Metodologi.*

---

## Referensi Utama — Bab 6

- Hevner, A. R., March, S. T., Park, J., & Ram, S. (2004). Design science in information systems research. *MIS Quarterly, 28*(1), 75–105.

- Wieringa, R. J. (2014). *Design science methodology for information systems and software engineering*. Springer.

- Wohlin, C., Runeson, P., Höst, M., Ohlsson, M. C., Regnell, B., & Wesslén, A. (2012). *Experimentation in software engineering*. Springer.

- Peffers, K., Tuunanen, T., Rothenberger, M. A., & Chatterjee, S. (2007). A design science research methodology for information systems research. *Journal of Management Information Systems, 24*(3), 45–77.