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# Våren 2021
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-
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name: Våren 2021
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href: 21v
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courses:
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-
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||||||
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course: ttt4280
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desc: Sensorer og instrumentering, våren 2021.
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updated: 2021-01-11
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# Høsten 2020
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# Høsten 2020
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-
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-
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course: tfe4152
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name: Høsten 2020
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desc: Design av integrerte kretser, høsten 2020.
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href: 20h
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updated: 2020-12-16
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courses:
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href: tfe4152/summary
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-
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-
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course: tfe4152
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course: ttt4120
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desc: Design av integrerte kretser, høsten 2020.
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desc: Digital signalbehandling, høsten 2020.
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updated: 2020-12-16
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updated: 2020-12-06
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href: tfe4152/summary
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href: ttt4120/summary
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-
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-
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course: ttt4120
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course: mfel3010
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desc: Digital signalbehandling, høsten 2020.
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desc: Medisin for teknologi- og realfagsstudenter, høsten 2020.
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updated: 2020-12-06
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updated: 2020-11-25
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href: ttt4120/summary
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href: mfel3010/summary
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-
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-
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course: mfel3010
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course: tfe4146
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desc: Medisin for teknologi- og realfagsstudenter, høsten 2020.
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desc: Halvlederkomponenter, høsten 2020.
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updated: 2020-11-25
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updated: 2020-11-23
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href: mfel3010/summary
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||||||
href: tfe4146/summary
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-
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course: tfe4146
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desc: Halvlederkomponenter, høsten 2020.
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updated: 2020-11-23
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href: tfe4146/summary
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# Våren 2020
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# Våren 2020
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||||||
-
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-
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course: ttt4270
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name: Våren 2020
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desc: Elektronisk systemdesign, prosjekt, våren 2020.
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href: 20v
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updated: 2020-05-05
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courses:
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-
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course: ttt4270
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desc: Elektronisk systemdesign, prosjekt, våren 2020.
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updated: 2020-05-05
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# Høsten 2019
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# Høsten 2019
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||||||
-
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-
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course: ttt4265
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name: Høsten 2019
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desc: Elektronisk systemdesign og -analyse II, høsten 2019.
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href: 19h
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updated: 2019-12-02
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courses:
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-
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-
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course: tdt4160
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course: ttt4265
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desc: Datamaskiner og digitalteknikk, høsten 2019.
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desc: Elektronisk systemdesign og -analyse II, høsten 2019.
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updated: 2019-11-28
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updated: 2019-12-02
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-
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course: tdt4160
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desc: Datamaskiner og digitalteknikk, høsten 2019.
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updated: 2019-11-28
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# Våren 2019
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# Våren 2019
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||||||
-
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-
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course: ttt4260
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name: Våren 2019
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||||||
desc: Elektronisk systemdesign og -analyse I, våren 2019.
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href: 19v
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updated: 2019-05-05
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courses:
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-
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-
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course: tma4105
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course: ttt4260
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desc: Matematikk 2, våren 2019.
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desc: Elektronisk systemdesign og -analyse I, våren 2019.
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updated: 2019-05-21
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updated: 2019-05-05
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-
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-
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course: tdt4102
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course: tma4105
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desc: Prosedyre og objektorientert programmering, våren 2019.
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desc: Matematikk 2, våren 2019.
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updated: 2019-05-15
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updated: 2019-05-21
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-
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course: tdt4102
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desc: Prosedyre og objektorientert programmering, våren 2019.
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updated: 2019-05-15
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2
about.md
@ -1,5 +1,5 @@
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---
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---
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layout: layouts/page
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layout: layouts/list
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title: Om
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title: Om
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||||||
permalink: /om/
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permalink: /om/
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---
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---
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57
ntnu/21v/ttt4280/lectures/2021-01-11/2021-01-11.md
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---
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title: "TTT4280 - Måleusikkerhet"
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description: "2021-01-11"
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math: true
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---
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||||||
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## Faglig innhold
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* Måleusikkerhet
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* Støyanalyse
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* Sensorer og aktuatorer
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* Sensortyper
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## Hva er sensorer
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Noe som kan lese den fysiske verdenen til noe vi kan prosessere.
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Finnes mange forskjellige sensorer. Flere i biler, telefoner, klokker osv.
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Tidligere ble det estimert at vi skulle ha ca 50 milliarder sensorer i 2020.
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## Måleusikkerhet
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Bruk av sensor = Utføre en måling.
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...og måleverdier har en usikkerhet.
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I visse situasjoner har måleusikkerheten masse å si, i andre har det ikke så mye å si.
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Sensitivitet er en måling for å ikke gjøre en Type II feil (alarmen løser **ikke** ut).
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Spesifisitet er en måling for å ikke gjøre en Type I feil (**falsk** alarm).
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### Grunnmodell for måleprosess
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||||||
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I realiteten er det støy i alle ledd.
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Sannsynligheten for at et sensorsystem gir riktig svar påvirkes av (minst) to faktorer:
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* Hvor entydig er underliggende sammenhenger?
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* Hvor nøyaktig kan vi måle de fysiske størrelsene?
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$$ \text{SNR} = \frac{\text{(Effekten for) sann verdi}}{\text{(Effekten for) støy}} $$
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### Målefeil
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Stokastiske feil (Type A feil) påvirker målingens *presisjon*.
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Presisjonen beskriver hvor reproduserbar en måling er.
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Systematiske feil (Type B feil) påvirker målingens *sannhet*.
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Sannheten er en måling på hvor langt unna den sanne verdien en måling er.
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BIN
ntnu/21v/ttt4280/lectures/2021-01-11/figures/grunnmodell.jpg
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ntnu/21v/ttt4280/lectures/2021-01-11/figures/true-prec.jpg
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ntnu/21v/ttt4280/ttt4280.md
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---
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layout: layouts/list
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||||||
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title: "TTT4280"
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description: "Sensorer og instrumentering"
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---
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## Forelesninger
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[2021-01-11](./lectures/2021-01-11/) - Intro og målesikkerhet
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@ -4,13 +4,15 @@ title: "NTNU"
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description: "Alt som har med studier på NTNU å gjøre."
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description: "Alt som har med studier på NTNU å gjøre."
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||||||
---
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---
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||||||
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||||||
{% assign courses = site.data.ntnu-courses | sort: 'update' %}
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{% for semester in site.data.ntnu-courses %}
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<h2>{{ semester.name }}</h2>
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{% assign courses = semester.courses | sort: 'update' %}
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<div class="row row-cols-1 row-cols-md-3">
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<div class="row row-cols-1 row-cols-md-3">
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{% for course in courses %}
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{% for course in courses %}
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<div class="col mb-4">
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<div class="col mb-4">
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<div class="card h-100">
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<div class="card h-100">
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<div class="card-body">
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<div class="card-body">
|
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<h5 class="card-title no-anchor" data-toc-skip><a href="{% if course.href %}{{ course.href }}{% else %}{{ course.course }}{% endif %}">{{ course.course | upcase }}</a></h5>
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<h5 class="card-title no-anchor" data-toc-skip><a href="{{ semester.href }}/{% if course.href %}{{ course.href }}{% else %}{{ course.course }}{% endif %}">{{ course.course | upcase }}</a></h5>
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<p class="card-text">{{ course.desc }}</p>
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<p class="card-text">{{ course.desc }}</p>
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</div>
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</div>
|
||||||
<div class="card-footer">
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<div class="card-footer">
|
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@ -19,4 +21,5 @@ description: "Alt som har med studier på NTNU å gjøre."
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</div>
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</div>
|
||||||
</div>
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</div>
|
||||||
{% endfor %}
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{% endfor %}
|
||||||
</div>
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</div>
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||||||
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{% endfor %}
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