I write, therefore I am
With this variation on a famous statement by the philosopher Descartes, I would like to express that writing about what happens in my life is important to me.
Monday, February 8, 2010
Four Colors Suffice
Today, I finished reading the book Four Colors Suffice by Robin Wilson, which I started reading on February 6, after I bought it on the same day at 16:56:10 for € 14,95 from bookshop De Slegte. I enjoyed reading the book, although I have to remark that where Wilson takes great care to explain many rather trivial mathematical facts in the first chapters, this lacks in the latter chapters where the mathematical details become more and more complex.Saturday, February 6, 2010
Four Colors Suffice
This afternoon, at 16:56:10, I bought the book Four Colors Suffice by Robin Williams for € 14.95 from bookshop De Slegte. In the evening I started reading this book. When I showed Annabel the fake counter example by William McGregor, she immediately wanted to solve it, but failed to do so.Wednesday, February 3, 2010
Dementia 'losing out' to cancer in funding stakes
Today, I came across the article Dementia 'losing out' to cancer in funding stakes in the Health section of the BBC website. The article starts with stating:-
Dementia now costs the UK economy twice as much as cancer
but gets a fraction of the funding to find causes and cures,
a report seen by the BBC shows.
Tuesday, February 2, 2010
Link
A loop recording session with microKORG XL and Ableton LiveSaturday, January 30, 2010
More snow
It has been snowing in the past day again. This morning there was a blue clear sky, but also a thin layer of fresh snow. In the evening there was more snow. This evening, I discovered some interesting data on the site of the Royal Netherlands Meteorological Institute which also contained some data about snowfall in various parts of the country. I wrote a program to compare this data with my own observations through the years. This resulted in an interesting list containing a little more than nine hunderd days in which I saw some form of snow.75%
Today, the winter sale at bookshop Broekhuis was 75% off. At 16:15:17, I bought the following books:
- van Dale Jaarboek Taal 2009 for € 7.37.
- Spellingscarousel by Wim Daniës fo € 0.62.
- Tokyo pop out map for € 1.75.
- Philip Akkerman 2314 Self-Portraits 1981-2005 for € 18.75.
I also watched the exhibition of Bernard Dorbeck. In the evening, I started to read the book Spellingscarousel about the various reforms of the Dutch spelling rules.
Wednesday, January 27, 2010
Link
Project EulerSaturday, January 23, 2010
A Concise Chinese-English Dictionary for Lovers
Today, I finished reading the book A Concise Chinese-English Dictionary for Lovers by Xiaolu Guo, which I started reading last Thursday after I bought it. It is a novel about a young Chinese girl being send to England by her parents to learn English. Soon she meets an older man with whom she gets a relationship. She carries a dictionary with her. Most of the titles of the chapters in the book, which are often not more than four pages long, are entries taken from the dictionary. It is quite a funny book, but it also deals about some very serious issues and at some points it is even deep.Friday, January 22, 2010
Prof. C. Hoede
Today, I discovered that Prof. C. Hoede died exactly one year ago when I came across a in memoriam (in Dutch) written by Hajo Broersma. It is he who offered Li-Xia job here at the Discrete Mathematics and Mathematical Programming group at the University of Twente, without which I would never have met her. For an overview of his work on Knowledge Graphs, see the memo 25 Years Development of Knowledge Graph Theory: The Results and The Challenge. I think I first met him the fall of 1982 when he taught a class on Combinatorics (of something like that).Thursday, January 21, 2010
Book sale
During lunch time, I passed throught the city and I noticed that there was a Winter Sale at bookshop Broekhuis. I could not resist the temptation to go inside and check all the books that where on sale for half price. I found A Concise Chinese-English Dictionary for Lovers by Xiaolu Guo. At 13:22:34, I bought it for € 5.87. Next, I went to bookshop De Slegte where they were also selling books at half price. I looked at some of the books, but could not make up my mind. I went up-stairs to the new arrivals section. There I came across the book Christ the Ethernal Tao by Hieromonk Damascene. At 13:38:56, I bought it for ten Euro. The books that both contain Chinese characters. In the evening, I started reading the first book.
Thursday, January 14, 2010
Fixing video recorder
This evening, I set out to repair the play button of our video recorder, which stopped working a few days ago. I opened the lid by taking out three screws, and it was obvious why the button did not work anymore. It had been broken off on one side, which made the arm move to the left (seen from the front) and miss the switch installed on the circuit board. I immediately thought about putting a piece of LEGO on the left to stop it from moving in that direction. I removed the front, which contained the button, to have a better access. I took me a few minutes searching in the attic to find my box with LEGO and about a minute to find the smallest possible piece from the basic sets of stones. With some tape, I put the red piece inside the video recorder. (Then I took a picture.) It did work as designed. And, as usual, it took two attempts to but the thing together, because after the first attempt the tape door would no longer open when the tape was ejected. It is a long time ago I did some hardware hackingWednesday, January 13, 2010
Playing Go
Tonight, I went to the university to play Go. When I arrived, Rudi and Araldo where playing and Taco was watching them. I sat across Taco and we greed on a seven stone advance for me. Rudi and Araldo finished earlier and they watched us playing the end game. Of coure, I made some small mistakes, and I thought I was getting behind, and ready to resign. But we played our game till the end, and it turned out, I had lost with one point. I was quite happy with the result. We replayed the first part of the game.Monday, January 11, 2010
Entry
Last Thursday, I found the book Ingang tot Het Bureau (Entry to The Institute by J.J. Voskuil (which is a summary with page numbers of the seven volume novel by the author) in De Slegte in the new arrivals section. I didn't buy the book, but later that evening, I changed my mind. I thought about passing by the shop on Friday morning, but I didn't. On Saturday, I went to shop again, but did not find the book anymore. When I made some inquiries, I was told that some employee who was not present at the moment, had cleared the new arrivals section and put many books at the right place. This afternoon I went again, and found the said employee. He remembered where he had put the book. He had put it under biographies, the only section that I did not search on Saturday. At 17:45:45, I bought the book for € 5.Palindrome date
And again it is a palindrome date, the second time this month. This time it is when you write it in the format MM/DD/YY, which gives: 01/11/10.Sunday, January 10, 2010
More snow
Some snow fell during the night and also during the morning it snowed with big flakes of snow. But the temperatures are rising and barely above zero, which cause the snow to melt at certain places.Link
Tanya Khovanova: The Odd One OutSaturday, January 9, 2010
More snow
Yesterday, the KNMI issued a weather alarm for today, stating that it was better to stay inside. The reason for this was a strong wind from the East in combination with heavy snow fall. But this morning there was only a little fresh snow. Nevertheless, I decided that I would go and do some shoppings. It was not as cold as I had expected. But in the afternoon it started to snow till about eight o'clock in the evening. It was very loose snow, which was easily blown away. But still around here it did not cause major problems. In the North of the country more snow fell and the wind also was stronger. It seems that the problems there are much worse.Thursday, January 7, 2010
Little snow
This morning and also this afternoon, we got a little snow in Enschede. Yesterday evening Amsterdam and the area North of Amsterdam was hit hard by a lot of snow, causing traffic jams that lasted till two o'clock at night and started again at six o'clock this morning. The snow that fell last weekend is still here. It has been a very long time ago that we had such a long period with snow, and it looks like it is not going to be over soon. The biggest problem is that the country is running out off salt.
Sunday, January 3, 2010
10 cm of snow
This morning there was about 10 cm (4 inches) of snow outside. Because there was, and still is, no wind, the snow piled high up on the branches of the trees and the plants. I took some pictures this morning.
Saturday, January 2, 2010
Palindrome date
I received an email from Susan Shaffer, reminding me that today is a palingdrome date. It is indeed for the formats MM/DD/YYYY (01/02/2010) and YYYY.MM.DD (2010.01.02). She also made a suggestion for upside-down dates, which are dates that look the same when read upside-down. The closest upside down year is 1961. All upside-down dates are in the past or the far future.More snow
In the evening it started to snow again, and the snow everywhere on the ground, but also on the trees and plants. At least a few centimeters of snow.The Good Women of China
This evening, I finished reading the book Verborgen stemmen (The Good Women of China) by Xinran, which I started reading on December 25, 2009. I bought the book on April 5, 2009 from De Slegte for € 2.50. The book contains a number of gripping but also shocking stories from women in China. It tells about a side of China that you do not read about in the official history. Very interesting to read.Thursday, December 31, 2009
Snow
It snowed from the start of the day. At first the snow is not staying everywhere on the ground, probably because the temperature is only just below zero, but by the end of the afternoon it did. The snow is sticking onto the trees and plants, which is a very nice view.Wednesday, December 30, 2009
LED light
We bought a 1 Watt LED light for the bath room upstairs for € 8.99, which is a good price if you realize that it is expected to last 50,000 hours. Maybe the last light we will buy. Li-Xia noted that the light was still glowing when switched off. I went upstairs and discovered that it indeed does glow. The glowing stops when I take the bulb out and starts immediately when I put it in again. Either some current is leaking or there is some induction current running. But anyway, I do find it strange.Tuesday, December 29, 2009
Going into the city
At the end of the afternoon, Li-Xia and I went into the city biking against the cold wind. We first went to a Chinese shop where we bought some krupuk and "Light Superior Soy Sauce". Next we went to De Slegte where, at 17:37:29, I bought the following two books:- Dylan on Dylan by Bob Dylan and Jonathan Cott for € 2.50.
- Schetsen | Roughs: Noordknoop Céramique, Maastricht by Jo Coenen for € 2.75.
Monday, December 28, 2009
Link
24 Killer Portable Apps For Your USB Flash DriveTurn On, Tune In, Veg Out
Friday, December 25, 2009
A white Christmas
This morning, it was snowing a little, yet we do not really have a white Christmas, because it is to warm for the snow to stay and the snow that fell in the past week has melted away almost completely.Update: At my mothers place there was still a lot of snow, and later the KNMI would declare it as an official White Christmas, with 8 and 4 cm of snow on the two days of Christmas in De Bilt.
Wednesday, December 23, 2009
Link
Top economist Rifkin: Nobody sees the crisis that is comingTuesday, December 22, 2009
Introduction
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