Merge pull request #82 from project-lovelace/ali/new-batch

populate_production_env.bash

@@ -12,7 +12,7 @@ echo "Migrating Django changes..."
 docker-compose -f docker-compose.prod.yml exec django python manage.py migrate --no-input
 
 echo "Populating Django database..."
-docker-compose -f docker-compose.prod.yml exec django python manage.py loaddata lovelace_website.json
+docker-compose -f docker-compose.prod.yml exec django python manage.py loaddata lovelace_django_dumpdata.json
 
 echo "Collecting static files..."
 docker-compose -f docker-compose.prod.yml exec django python manage.py collectstatic

populate_staging_env.bash

@@ -12,7 +12,7 @@ echo "Migrating Django changes..."
 docker-compose -f docker-compose.staging.yml exec django python manage.py migrate --no-input
 
 echo "Populating Django database..."
-docker-compose -f docker-compose.staging.yml exec django python manage.py loaddata lovelace_website.json
+docker-compose -f docker-compose.staging.yml exec django python manage.py loaddata lovelace_django_dumpdata.json
 
 echo "Collecting static files..."
 docker-compose -f docker-compose.staging.yml exec django python manage.py collectstatic

spin_up_lovelace_website.bash

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+cd src/
+docker-compose build
+docker-compose up --detach
+

src/entrypoint.sh

@@ -17,6 +17,9 @@ echo "Migrating Django changes..."
 python manage.py migrate --no-input
 
 echo "Populating Django database..."
-python manage.py loaddata lovelace_website.json
+python manage.py loaddata lovelace_django_dumpdata.json
+
+echo "Collecting static files..."
+python manage.py collectstatic
 
 exec "$@"

src/problems/templates/problems/compound-interest.html

@@ -0,0 +1,82 @@
+{% extends "problems/problem.html" %}
+
+{% load static %}
+
+{% block you_will_learn %}
+  the most powerful force in the world according to Einstein. <sup>[<a href="https://quoteinvestigator.com/2019/09/09/interest/">citation needed</a>]</sup>
+{% endblock %}
+
+{% block problem_body %}
+<p class="has-text-justified">
+  Compound interest is when interest on a loan or investment is added back to the loan or investment. So it's like
+  interest on interest! Compounding leads to exponential growth so it makes your investments grow big over time but
+  also makes it much harder to pay off predatory loans and credit card debt.
+</p>
+<br>
+<p class="has-text-justified">
+  If you start with an amount of money $m$ and the compound interest is calculated once a year with interest rate $r$
+  (as a fraction between 0 and 1) then after $n$ years you end up with a new amount $M$ given by
+
+  $$ M = m (1 + r)^n $$
+</p>
+<br>
+
+This plot shows the growth of $m = 1,000$ dollars compounded every year at 10% ($r = 0.1$) for $n = 25$ years.
+
+<figure style="text-align: center;">
+  <div id="compound-interest-figure"></id>
+</figure>
+<br>
+
+<p class="has-text-justified">
+  Submit some code with a function <tt>compound_interest(m, r, n)</tt> that computes the final amount $M$ after
+  starting with an amount $m$ compounded yearly at a rate $r$ for $n$ years.
+</p>
+{% endblock %}
+
+{% block input_description %}
+Starting amount $m$, rate $r$, and number of years $n$.
+{% endblock %}
+
+{% block output_description %}
+Final amount $M$.
+{% endblock %}
+
+{% block examples %}
+<article class="message">
+  <div class="message-header">
+    <p>Example</p>
+  </div>
+  <div class="message-body"
+       style="font-family: monospace; text-align: justify; word-wrap: break-word; white-space:pre;"><b>Input</b>: 1000, 0.07, 25
+<b>Output</b>: 5427.43</div>
+</article>
+{% endblock %}
+
+{% block function_signature %}
+compound_interest(m, r, n)
+{% endblock %}
+
+{% block notes_and_references %}
+<div class="content">
+  <h3>Notes</h3>
+  <ul>
+    <li>
+      Charging compound interest on loans was and is still considered a kind of <a href="https://en.wikipedia.org/wiki/Usury">usury</a>
+      by many religions and societies. The Romans and the Christian Bible condemn charging interest on loans to poor people as
+      it is seen as a form of exploitation. On the extreme end, Islam forbids the charging of any kind of interest as it sees borrowing
+      and lending as social transactions aimed at benefiting others and thus should not be profitable.
+    </li>
+    <li>
+      The number $e$ was actually discovered by Jacob Bernoulli in 1683 when investigating compound interest.
+      Now of course called Euler's number because of <a href="https://en.wikipedia.org/wiki/Stigler%27s_law_of_eponymy">Stigler's law</a>.
+    </li>
+    <li>
+      The <a href="https://en.wikipedia.org/wiki/Rule_of_72">Rule of 72</a> is a quick rule/approximation for figuring
+      out how long it would take for the amount to double: it's $72/r$ where $r$ is the interest rate as a percentage.
+    </li>
+  </ul>
+</div>
+{% endblock %}
+
+{% block discourse_topic_id %}x{% endblock %}

src/problems/templates/problems/logistic-growth.html

@@ -0,0 +1,49 @@
+{% extends "problems/problem.html" %}
+
+{% load static %}
+
+{% block you_will_learn %}
+  modeling population growth and numerically solving a differential equation.
+{% endblock %}
+
+{% block problem_body %}
+<p class="has-text-justified">
+  $$ \frac{dP}{dt} = rP \left( 1 - \frac{P}{K} \right) $$
+
+  $$ P^{n+1} = P^n + \Delta t rP^n \left( 1 - \frac{P^n}{K} \right) $$
+</p>
+<br>
+
+<figure style="text-align: center;">
+  <div id="logistic-growth-app"></id>
+</figure>
+<br>
+{% endblock %}
+
+{% block input_description %}
+P^0, \Delta t, r, K, N
+{% endblock %}
+
+{% block output_description %}
+P(t) = {P^0, P^1, ..., P^N}
+{% endblock %}
+
+{% block examples %}
+<article class="message">
+  <div class="message-header">
+    <p>Example</p>
+  </div>
+  <div class="message-body"
+       style="font-family: monospace; text-align: justify; word-wrap: break-word; white-space:pre;"><b>Input</b>: $1,000, 0.07, 25
+<b>Output</b>: $5,427.43</div>
+</article>
+{% endblock %}
+
+{% block function_signature %}
+logistic_growth(P0, dt, r, K, N)
+{% endblock %}
+
+{% block notes_and_references %}
+{% endblock %}
+
+{% block discourse_topic_id %}x{% endblock %}

src/problems/templates/problems/plump-moose.html

@@ -0,0 +1,106 @@
+{% extends "problems/problem.html" %}
+
+{% load static %}
+
+{% block you_will_learn %}
+  cold moose have more fat
+{% endblock %}
+
+{% block problem_body %}
+<p class="has-text-justified">
+  Bergmann's rule says that animals living in colder climates tend to be larger in size. Swedish scientists measured
+  the body mass of different moose populations in Sweden and found that the further north you go, the bigger the moose
+  get! Taking their data we can fit a line through it to predict the body mass of a moose at some latitude using the
+  equation
+
+  $$ \text{mass} = a \times \text{latitude} + b $$
+
+  where $a = 2.757$ and $b = 16.793$.
+</p>
+<br>
+
+<figure style="text-align: center;">
+  <div id="moose-mass-figure"></id>
+</figure>
+<br>
+
+<p class="has-text-justified">
+  Submit some code with a function <tt>moose_body_mass(latitude)</tt> that returns the expected body mass of a moose
+  living at the input latitude using the equation from above.
+</p>
+{% endblock %}
+
+{% block input_description %}
+Latitude
+{% endblock %}
+
+{% block output_description %}
+The expected body mass of a moose living at the input latitude.
+{% endblock %}
+
+{% block examples %}
+<article class="message">
+  <div class="message-header">
+    <p>Example</p>
+  </div>
+  <div class="message-body"
+       style="font-family: monospace; text-align: justify; word-wrap: break-word; white-space:pre;"><b>Input latitude</b>: 60.5
+<b>Output body mass</b>: 183.5915</div>
+</article>
+{% endblock %}
+
+{% block function_signature %}
+moose_body_mass(latitude)
+{% endblock %}
+
+{% block notes_and_references %}
+<div class="content">
+  <h3>Notes</h3>
+  <ul>
+    <li>
+      Bergmann's rule is a generalization and so it doesn't apply to every species. In fact many counter-examples to
+      Bergmann's rule exist but it seems to hold true in many cases (Meiri and Dayan, 2003).
+    </li>
+    <li>
+      The original explanation given by Bergmann (1847) for why animals are larger in colder climates is due to the need to
+      conserve heat. Since larger animals have a lower surface area to volume ratio, they lose less body heat per
+      unit mass helping to keep them warmer when it's cold. More recent studies don't support this hypothesis though
+      (Ashton et al., 2000).
+    </li>
+  </ul>
+
+  <h3>References</h3>
+  <dl>
+    <dt>
+      Sand, Cederlund &amp; Danell (1995), <a href="https://doi.org/10.1007/BF00341355">
+      Geographical and latitudinal variation in growth patterns and adult body size of Swedish moose (Alces alces)</a>,
+      Oecologia <b>102</b>, 433–442.
+    </dt>
+    <dd>This is where we got the data from.</dd>
+    <br>
+
+    <dt>
+      Bergmann (1847), <a href="https://books.google.com/books?id=EHo-AAAAcAAJ&amp;pg=PA3">
+      Über die Verhältnisse der Wärmeökonomie der Thiere zu ihrer Grösse</a>, Göttinger Studien <b>3</b>(1), 595–708.
+    </dt>
+    <dd>
+      This is the original article by Bergmann in German at over a 100 pages long! Google translates the title to English
+      as "About the relation of the heat economy of animals to their size".
+    </dd>
+    <br>
+
+    <dt>
+      Meiri and Dayan (2003), <a href="https://doi.org/10.1046/j.1365-2699.2003.00837.x">On the validity of Bergmann's rule</a>,
+      Journal of Biogeography <b>30</b>, 331-351.
+    </dt>
+    <br>
+
+    <dt>
+      Ashton, Tracy, &amp; de Queiroz (2000), <a href="https://doi.org/10.1086/303400 ">
+      Is Bergmann’s Rule Valid for Mammals?</a>, The American Naturalist <b>156</b>(4), 390-415.
+  </dl>
+  <br>
+</div>
+{% endblock %}
+
+{% block discourse_topic_id %}x{% endblock %}

src/problems/templates/problems/rna-translation.html

@@ -0,0 +1,54 @@
+{% extends "problems/problem.html" %}
+
+{% load static %}
+
+{% block you_will_learn %}
+  genetics and strings.
+{% endblock %}
+
+{% block problem_body %}
+<p class="has-text-justified">
+  As you learned in <a href"dna-transcription.html">DNA transcription</a>, the first step in converting DNA to proteins
+  is transcribing the DNA into RNA. The second step is translating the RNA into a chain of amino acids, called a
+  polypeptide. The process is biochemically complex but the resulting amino acid sequence is quite simple: each set of
+  three base pairs (called a nucleotide triplet or codon) is translated to a single amino acid. The chart below shows
+  how to translate each codon to an amino acid.
+</p>
+<br>
+
+<figure style="text-align: center;">
+  <img style="width: 75%; margin: 0 auto;" src="{% static 'img/codon_table.png' %}">
+  <figcaption class="help">
+  </figcaption>
+</figure>
+{% endblock %}
+
+All sequences begin with the start codon and end with one of the end codons.
+
+{% block input_description %}
+An RNA sequence.
+{% endblock %}
+
+{% block output_description %}
+A sequence of amino acids.
+{% endblock %}
+
+{% block examples %}
+<article class="message">
+  <div class="message-header">
+    <p>Example</p>
+  </div>
+  <div class="message-body"
+       style="font-family: monospace; text-align: justify; word-wrap: break-word; white-space:pre;"><b>Input</b>: $1,000, 0.07, 25
+<b>Output</b>: $5,427.43</div>
+</article>
+{% endblock %}
+
+{% block function_signature %}
+translate(rna)
+{% endblock %}
+
+{% block notes_and_references %}
+{% endblock %}
+
+{% block discourse_topic_id %}x{% endblock %}

src/problems/templates/problems/speed-of-light.html

@@ -3,7 +3,7 @@
 {% load static %}
 
 {% block you_will_learn %}
-	submitting code and that light is <i>fast</i>.
+  light is <i>fast</i>.
 {% endblock %}
 
 {% block problem_body %}

src/static/code_stubs/c/compound_interest.c

@@ -0,0 +1,7 @@
+double compound_interest(double amount, double rate, int years) {
+    double new_amount = 0.0;
+
+    // Your code goes here!
+
+    return new_amount;
+}

src/static/code_stubs/c/plump_moose.c

@@ -0,0 +1,7 @@
+double moose_body_mass(double latitude) {
+    double mass = 0.0;
+
+    // Your code goes here!
+
+    return mass;
+}

src/static/code_stubs/javascript/compound_interest.js

@@ -0,0 +1,7 @@
+function compound_interest(amount, rate, years) {
+    var new_amount = 0
+
+    // Your code goes here!
+
+    return new_amount
+}

src/static/code_stubs/javascript/plump_moose.js

@@ -0,0 +1,7 @@
+function moose_body_mass(latitude) {
+    var mass = 0
+
+    // Your code goes here!
+
+    return mass
+}

src/static/code_stubs/julia/compound_interest.jl

@@ -0,0 +1,7 @@
+function compound_interest(amount, rate, years)
+    new_amount = 0
+
+    # Your code goes here!
+
+    return new_mount
+end

src/static/code_stubs/julia/plump_moose.jl

@@ -0,0 +1,7 @@
+function moose_body_mass(latitude)
+    mass = 0
+
+    # Your code goes here!
+
+    return mass
+end

src/static/code_stubs/python/compound_interest.py

@@ -0,0 +1,6 @@
+def compound_interest(amount, rate, years):
+    new_amount = 0
+
+    # Your code goes here!
+
+    return new_amount