Lucid Manager
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Peter Prevos is a civil engineer and social scientist with a PhD in business. He manages the data science team at a regional water utility in Australia. His task is to create value by creating useful, sound and aesthetic data products. His goal is to write a book about data science for water utilities using R. Follow this blog where he shares his experiments he has performed using R language.
Lucid Manager
6M ago
Project Euler 7 delves into the wonderful world of prime numbers. These numbers are interesting because they don't follow a predictable pattern. There is no algorithm to calculate primes, which is what makes them valuable in cryptography.
As the numbers get larger, the gaps between consecutive primes also increase. There are, however, some interesting patterns. There seem to be infinitely many twin primes, which are prime numbers that with a difference of two, such as (3, 5), (5, 7) and (11, 13). Another pattern in prime numbers are sexy primes, which differ by six: e.g. (5,11), (7, 13) and (1 ..read more
Lucid Manager
6M ago
Euler Problem 35 takes us back to the world of prime numbers and circular primes.
Euler Problem 35 Definition
The number 197 is a circular prime because all rotations of the digits: 197, 971, and 719, are themselves prime.
There are thirteen such primes below 100: 2, 3, 5, 7, 11, 13, 17, 31, 37, 71, 73, 79, and 97.
How many circular primes are there below one million?
Proposed Solution in R
This code reuses the function that strips all digits for a number, presented in Euler Problem 30. The solution for this problem also use the is.prime function to test whether a number is a prime, develo ..read more
Lucid Manager
6M ago
The first step in the Emacs Writing Studio workflow is ingestion (reading, listening and watching) new content. Reading ebooks with Emacs is straightforward as it provides functionality to read several popular types of electronic documents, such as PDF and ePub. The software can also browse the web with an unobtrusive plain text browser.
This article is part of the Emacs Writing Studio (EWS), which explains how to use Emacs to undertake research and write and publish articles, books and websites.
You can find the EWS configuration on GitHub:
Download from GitHub
PDF files
The Portable Documen ..read more
Lucid Manager
6M ago
Over the years I have tried a cornucopia of digital applications to take notes, eventually ending up in Emacs. Emacs has several note-taking packages that extend basic functionality to help you manage your solidified thoughts. Org Roam is a popular note-taking package that uses Org mode as its central repository. The disadvantage of this package is that it relies on a database and can only manage Org mode files. I used Org roam for a couple of years but moved to the Denote package by Protesilaos Stavrou. This package excels in its simplicity and the ease by which it can be extended. The most e ..read more
Lucid Manager
6M ago
Let's face it, the configured Emacs interface is hard on the eyes. This article further explains how to improve the Emacs user interface. These settings are obviously opinionated, so this article is, more than anything else, an example of how to configure Emacs to your personal preferences.
This article is part of the Emacs Writing Studio series. You can download the complete configuration file for the articles on this website from GitHub.
Download from GitHub
Improving the Emacs user interface
The default Emacs user interface is a hybrid between keyboard and mouse-driven operations. While us ..read more
Lucid Manager
6M ago
Writing in Emacs means that everything is plain text, which is a different experience for those people moving from word processors such as MS Office, Apple Pages or Google Docs. This article discusses the principles and benefits of writing plain text and why you should adopt it as a writer.
This article is part of the Emacs Writing Studio, which explains how to use Emacs to undertake research and write and publish articles, books, film and theatre scrips and websites.
Writing plain text
Plain text is not formatted and most commonly has a .txt extension. There are, however, many other plain te ..read more
Lucid Manager
6M ago
Emacs is the Swiss Army Chainsaw of productivity tools. This venerable software tool can help you undertake almost every task in the writing process, from idea generation to writing and publishing. Experienced users say they "live inside Emacs" as virtually all computing activities can be done in this software. This article describes a possible Emacs workflow for writers.
This article is part of the Emacs Writing Studio configuration, which explains how to use Emacs to undertake research and write and publish articles, books, and websites.
The Emacs Workflow
The process of writing can be chao ..read more
Lucid Manager
6M ago
Most people believe that the first step in becoming more productive is finding the perfect software tool to help you manage the vast amounts of information we consume daily. Most people manage a complex web of tools to satisfy their needs: email clients, note-taking applications, task managers, word processors and so on are needed to complete a project. This article explains why you should use Emacs for writing as you can use it to undertake almost every task in your writing project from ideation to publication.
I used to hop from application to application to perform what I needed to do—jumpi ..read more
Lucid Manager
10M ago
We can physically measure the water supply process from catchment to tap, but what happens downstream of the connection is a matter of psychology and sociology instead of chemistry and physics. This chapter discusses analysing the customer experience using surveys. The learning objectives for this chapter are:
Understand the principles of measuring the customer experience with surveys
Assess the reliability of surveys with a correlation matrix
Assess the validity of surveys using factor analysis
Data Science for Water Utilities
Data Science for Water Utilities: Data as a Source of Value i ..read more
Lucid Manager
10M ago
The book Data Science for Water Utilities introduces using R for water utilities through realistic case studies.
Data Science for Water Utilities
Data Science for Water Utilities: Data as a Source of Value is an applied, practical guide that shows water professionals how to use data science to solve urban water management problems.
Routledge Amazon
What is Data Science?
Data science is the systematic analysis of data to create business value. It exists in the confluence of mathematics, computer science and domain knowledge. Many people in the data science industry suggest that people wi ..read more