Helping scientists and engineers bring their models to the web
If you are a reservoir engineer, you need money to do your job. Your financial managers don’t understand much about your work, and it’s difficult for them to prioritize the budgets; so they occasionally ask you to quantify the value of your work in financial terms. If this gives you headaches, this webinar is for you.
[Read more…] about On the value of calculating water balances
The Plastiras Lake in Greece is a typical example where everyone wants something different. The electricity company wants to use it to produce energy. The farmers want to use it to water their fields. The nearby city is supplied with water from it, and therefore wants the water to be of good quality. The tourist resorts around the lake would prefer it if the others didn’t take any water at all, because drawing water makes the lake less beautiful. So fifteen years ago we were given the task of studying these conflicting objectives and proposing a way to manage the lake better.
(A presentation I made on 7 November 2015 at a Greek free software conference, the FOSSCOMM 2015, TEI of Athens)
Although my subject is Enhydris, we will only take a short look at it towards the end. We will first talk about development methodologies and about good and bad uses of technology.
I am under the impression that unit testing is still considered something exotic by many developers. I think that this has to do with a certain kind of provincialism that we have. I’m not talking about Greece, but about many developers all over the planet who don’t work on great projects like Python and Django. [Read more…] about Enhydris: A free web application for meteorological measurement management
In this concise introduction, I explain essential things you need to know when working with geographical co-ordinate systems. I explain why many geographical co-ordinate systems are being used and how to use the free Proj software to convert between them, and I make recommendations on how to store co-ordinates in your database. I assume you already know what latitude and longitude means and what cartesian (x-y) co-ordinates are, and that you have some understanding of the geometrical term “projection”, notably what we mean by “project a 3d shape to a plane”. The last section is intended for programmers.
[Read more…] about Introduction to geographical co-ordinate systems