After several days of no writing, I will make up by publishing some edited notes that I used during one guest lecture this week. This is a short bio of a brilliant female mathematicians who lived about 150 years ago. Her story is an example of personal determination and brilliant mind, but also can make […]
Month: February 2015
The "Helsinki walnut" dataset
Our research group has made an open access dataset for image reconstruction available at the following link: www.fips.fi/dataset.php The measurement data was collected and documented by K. Hämäläinen, L. Harhanen, A. Kallonen, A. Kujanpää, E. Niemi and S. Siltanen. Our group used the walnut data for testing several tomographic reconstruction algorithms, as you can see […]
EXTREMA COST action: live from Leiden
This week I am taking part to the workshop at Lorentz Center (Leiden, The Netherlands) "Artefacts in X-ray tomography". The workshop is part of the COST action, a European framework that allocates funds for multidisciplinary innovative projects, stimulating an active and fruitful collaboration among European researchers and professionals. This is my third workshop of the EXTREMA […]
Creating a voice: a challenging inverse problem (part 2)
(a continuation of this previous post) In this post, I will describe how the human voice is produced and why this is useful to the approach of the Inverse Problems Group at University of Helsinki. Our voice is produced by air flowing from our lungs through our vocal folds and vocal tract. Vocal folds - commonly known as […]
Ettore Majorana: is the mystery solved?
A breaking piece of news appeared today on one Italian national newspaper: there is proof of Ettore Majorana being in Venezuela in the 1950s. Maybe you have never heard of him, but Majorana was a gifted Italian physicist who had produced great theoretical results in particle physics and quantum mechanics. The discovery of neutrinos was bestowed […]
Research idealism VS real world
Have you ever had the experience of a kid who asks you a candid and simple question, that has a complicated answer? The kind of question like "Why we have so much and there are kids starving in India?", where you think "I wish the world was so simple and fair, like the spirit with […]