How to access css or js from public folder in Rails 4.0? - ruby-on-rails-4

I migrated my application from Rails 3.2 to 4.0. I am having css and js in my assets folder and public -> technology folder.
Now while running the application, the css and js under public folder are not applicable.
This is my layout:
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<title>ABC TECHNOLOGIES</title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="/technology/css/vendor/bootstrap.css">
<link rel="stylesheet" href="/technology/css/all.css">
<link rel="stylesheet" href="/technology/css/colorbox.css">
<%= javascript_include_tag "application" %>
<script src="/technology/js/vendor/modernizr-2.6.2-respond-1.1.0.min.js"></script>
<script src="/technology/js/vendor/bootstrap.min.js"></script>
</head>
<body>
------------ some code ---------------
</body>
</html>
How to access my css / js from public folder in this layout?
Or is there any configurations I missed or made true/false in development.rb / application.rb etc; ?
This is the link I followed.

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Ember-CLI: Ember Build keeps building the wrong index.html

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.
.
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On initialising a firebase app, one is prompted:
? What do you want to use as your public directory? (public)
make sure to set the dist folder as the public directory, that is
? What do you want to use as your public directory? (public) dist
using the default public will cause the above behavior no matter how many times you build your Ember app.
To fix the problem, re-initialise the firebase app with the firebase init command, and set the right folder as the public directory.

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To use momentjs on ionic2 according to this link:
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-> also check conflict of js.
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below is the code sequence of added script file and CSS file.
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<!DOCTYPE html>
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(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
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The command I've used to generate the dist folder
ember build --environment production
Here's how I do it dist folder -> click the index.html.
Here's the result.
Here's the contents of the index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<script src="assets/vendor.js"></script>
<script src="assets/todo-mvc.js"></script>
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Here's the error message
I was doing it the wrong way. I deployed the app to an http web server. turns out by clicking the index.html. I'm accessing it via the file protocol