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Last Monday, I found a piece of stone while during weeding at Hereenboeren Usseler Es. I used it to sharpen the hoe I was using. I
thought about keeping it for that purpose, but I forgot about it. This morning,
I found it at the place I left it. When I cleaned it with some water, I
discovered that it was a piece of stonewhere. Below an image with pictures from
It looks like it is from the top of a round piece of earthware. I guess its
diameter must have been about 7 cm. The top looks flat and the edge sticks a
bit out. I have tried to determine it, but did not arrive at a final
conclusion. My best guess is that it is from the period 1280 to 1400. But I
could be totally wrong. I did find around 2008 some archaeological research was
performed on the Usseler Es and that findings from various periods were found.
At least from the Roman area but also possible settlements from the bronze or
iron age. The reports (in Dutch) are:
I read that archaeological finds always have to be reported so I reported it,
primarily because I want to know from which age it is. If I have to hand in the
fragment, I am happy to do so.
I got a response from an archaeologist with respect to the piece of stoneware
that I found last Saturday. The piece probably comes from
the foot of the pottery. The rim on the top half of the
middle photograph is most likely a fracture surface that the bottom was
attached to. So, the pieces are shown upside-down on the photographs. It is
difficult to estimate the age of the piece, the best guess is that it is
probably from the Middle Ages (500 - 1500), although it cannot completely ruled
out that it is even older and comes from Roman times. The find is interesting
but not really of much archaeological significance because it was made in the
top soil layer that has probably been plowed many times and disturbed in other
ways. There is a long tradition that arable areas were raised with manure and
peat soil from elsewhere.
Chestnut and hazelnuts
Conny gave me a chestnut and two hazelnuts, which she found yesterday. The chestnut was
still half in it shield. We decided to plant the nuts in the back garden. I placed them, half in the soil between some sunflowers.
Almost all of the sunflowers have topped over. We have had and still have a lot
of flowers in the back garden. Still can smell the scent of them. We harvested
two uniform-colored zucchini from our garden from three plants. The plants got
a lot of male flowers. We do not know why they did not bear more fruits
(growing from female flowers). The two grapevines that we planted on May 2 have not grown much, maybe because they were in the shadow of some
flowers. The wisteria sinensis 'Prolific' is doing fine. The clematis have
been doing less well. One of them seems to have died.
The temperature at Twenthe Airport has gone up to
30.0° Celsius, which breaks the previous record of 26.7° on this date
in 2005. Yesterday, the temperature reached 30.2° Celsius and the days
before 29.7° and 25.6° Celsius. Which means that if tomorrow the
temperature reaches 30.° again, which is quite likely, it means we have a
regional heat wave.
This evening, I went to GOGBOT with the
title Feed your head: Drugs & AI. The exhibition only opened around
nine in the evening after the official opening speeches. This is the twentieth
time that GOGBOT has been organized and the last time that Kees de Groot will organize it. I found the following works of
the exhibition noteworth:
At 22:48, I bought the book How to Change Your Mind written by Michael Pollan in English and published by Penguin Publishing Group in
2019, ISBN:9780735224155, from Underbelly for
GOGBOT and more
I first went to TETEM art space to see the
the exhibition Liquid Dreams by Annika
Kappner. This is also part of GOGBOT. During the guided
meditation of the exhibition, I fell asleep. Next, I went to the other GOGBOT
locations. I found some more works notable:
I bought three cotton shirts for € 29.99 each. I next went to
bookshop Broekhuis where at 16:16:03, I bought
the book The Andy Warhol Diaries written by Andy Warhol (in English), edited by Pat Hackett, published by Hachette UK
in 2009, ISBN:9780446571241, for € 20.00.
The temperature at Twenthe Airport has gone up to
29.8° Celsius, which breaks the previous record of 27.8° on this date
Who owns the land? the countryside?
I went to the exhibition Van wie is het
(platte)land (which you could translate to 'Who owns the land? the
countryside?') at Rijksmuseum Twenthe. It is
actually a combination of three exhibitions of which one is also part of the
photo manifestation that will be held in Enschede this fall. The first visited
the exhibition Terra Libera (Latin for 'The Free land'). I found the
following works noteworth:
- Landing: Rituals for Siturted Sonic Reverence, Budhaditya Chattopadhyay, 2023.
- Ware Afbeelding vande Bedyckte Beemster-Landen inden iare M.DC.XLIII, Daniel van Breen, 1644.
- The Chronicle of Gaia, Carlijn Kingma, 2019.
- Arbeider aan het werk in tulpenveld, Overveen, Anton Koster, undated.
- Untitled XIX, Andreas Gursky, 2015.
- Synthesis-micro (6×), Hanneke Francken, 2021-2022.
- Algemene kaart van Suriname, Alexander de Lavaux, 1737-1757.
- Grid Corrections #245, #352, #441, Gerco de Ruijter, 2018.
- Molens aan een vaart, Jan Hendrik Weissenbruch, circa 1875-1900.
- Blood Related, Basse Stittgen, 2017-ongoing.
- Landschap met koeien, Willem Maris, undated.
- Footprint, Hendrik Coetzee, 2021.
- Les Mées, Andreas Gursky, 2016.
- Nose Patro, Christiaan Zwanikken, 2015-2016.
- Postnaturalia, Krištof Kintera, 2016.
Works from the second exhibition, called Extractivism, I found
- Terra Nullus - Ownership and Pioneering on Ice, Esther Kolemeijer, 2013-ongoing.
- Terminal Beach, Troika, 202.
- Phosphor Tailing #6, Near Lakeland, Florida, USA, Edward Burtynsky, 2012.
- Coal Mine #1, North Rhine, Westphalia, Edward Burtynsky, 2015.
- Salt Pan #21, Little Rann of Kutch, Gukarat, India, Edward Burtynsky, 2016.
- Turmoil, Leon de Bruijne, 2021.
- The Subterranean Imprint Archive, Lo-Def Film Factory, 2021.
From the normal collection, I saw:
Finally, I saw third exhibition, which is part of the photo manifistation,
In the garden, Strings of
Soul was playing.
I was looking for what was the last record temperature for yesterday, so I
downloaded a zip file with weather data for weather station 290: Twente starting from 1951 till
yesterday. I was a bit surprised that it mentioned higher maximum temperatures
than the ones I find on weather graphs on a Dutch rain radar website. This might be because these
graphs are based on a less frequent sampling, thus missing some of the
fluctuations. Starting from September, it mentions the temperatures:
25.6°C, 29.7°C, 30.5°C, 30.2°C, 30.0°C, and 28.8°C
(for yesterday). That means we had already had a regional heat wave on Friday
according to the
definition used by the Royal Netherlands Meteorological Institute. Today,
the temperature at Twenthe Airport reached (at
least) 29.2° Celsius, which breaks the record of 28.7° Celsius in 1959.
I wrote a program to process the file and list the records. Below the list
starting from 2020. If a higher (or lower) temperature was achieved than I
mentioned, than I have added the mentioned temperature. There are also some
that I did not mention. Of course, this might be because I missed them, but it
is also possible that it is not real a record, because a the temperature was
already reached in a year before 1951.
- January 31, 2020: Record maximum temperature of 12.3°C beating record of 1990
- February 16, 2020: Record maximum temperature of 17.5°C (not 17.4°C) beating record of 2019
- March 30, 2020: Record maximum temperature of -5.9°C (not -5.6°C) beating record of 1996
- April 6, 2020: Record maximum temperature of 23.3°C beating record of 1961
- April 8, 2020: Record maximum temperature of 24.4°C beating record of 2018
- May 12, 2020: Record minimum temperature of -1.6°C beating record of 2019
- May 15, 2020: Record minimum temperature of -1.8°C beating record of 1973
- August 9, 2020: Record maximum temperature of 32.5°C beating record of 1992
- August 10, 2020: Record maximum temperature of 33.2°C (not 32.9°C) beating record of 1975
- August 11, 2020: Record maximum temperature of 34.7°C (not 34.6°C) beating record of 2003
- August 14, 2020: Record maximum temperature of 30.4°C beating record of 1985
- August 16, 2020: Record maximum temperature of 31.3°C beating record of 1973
- August 21, 2020: Record maximum temperature of 30.7°C beating record of 1959
- September 15, 2020: Record maximum temperature of 32.1°C beating record of 2016
- November 2, 2020: Record maximum temperature of 19.5°C (not 19.4°C) beating record of 1968
- November 15, 2020: Record maximum temperature of 17.0°C beating record of 1986
- February 13, 2021: Record minumum temperature of -13.2°C beating record of 1969
- February 21, 2021: Record maximum temperature of 18.0°C beating record of 1990
- February 22, 2021: Record maximum temperature of 16.8°C (not 16.7°C) beating record of 1966
- February 23, 2021: Record maximum temperature of 18.3°C beating record of 1990
- February 24, 2021: Record maximum temperature of 18.7°C (not 18.5°C) beating record of 1990
- March 31, 2021: Record maximum temperature of 24.4°C beating record of 2017
- June 16, 2021: Record maximum temperature of 30.3°C (not 30.2°C) beating record of 1966
- June 17, 2021: Record maximum temperature of 33.8°C (not 33.6°C) beating record of 2002
- December 30, 2021: Record maximum temperature of 14.1°C beating record of 2017 (not 1925)
- December 31, 2021: Record maximum temperature of 13.9°C (not 13.8°C) beating record of 2017
- January 1, 2022: Record maximum temperature of 13.5°C beating record of 2012
- April 3, 2022: Record minimum temperature of -6.0°C (not -5.8°C) beating record of 1996
- May 18, 2022: Record maximum temperature of 29.6°C beating record of 1976
- June 21, 2022: Record maximum temperature of 2.9°C beating record of 1964
- June 23, 2022: Record maximum temperature of 32.2°C (not 32.1°C) beating record of 2016
- July 15, 2022: Record maximum temperature of 5.8°C beating record of 1977
- July 19, 2022: Record maximum temperature of 38.0°C (not 37.7°C) beating record of 2006
- July 28, 2022: Record maximum temperature of 7.1°C beating record of 1996
- August 14, 2022: Record maximum temperature of 32.1°C beating record of 2020 (not 1973)
- August 23, 2022: Record maximum temperature of 30.7°C (not 30.6°C) beating record of 1955
- August 24, 2022: Record maximum temperature of 32.7°C (not 32.3°C) beating record of 2016
- October 28, 2022: Record maximum temperature of 22.7°C beating record of 2005
- October 29, 2022: Record maximum temperature of 22.3°C (not 22.1°C) beating record of 2005
- November 12, 2022: Record maximum temperature of 15.4°C (not 15.3°C) beating record of 2015
- December 31, 2022: Record maximum temperature of 16.2°C beating record of 2021
- January 1, 2023: Record maximum temperature of 15.8°C (not 15.7°C) beating record of 2022
- May 3, 2023: Record minimum temperature of -2.2°C beating record of 1981
- June 11, 2023: Record maximum temperature of 30.4°C (not 30.2°C) beating record of 1966
- June 12, 2023: Record maximum temperature of 30.2°C (not 29.7°C) beating record of 2006
- July 8, 2023: Record maximum temperature of 32.9°C (not 32.8°C) beating record of 1959
- September 7, 2023: Record maximum temperature of 30.2°C (not 30.0°C) beating record of 2005
- September 8, 2023: Record maximum temperature of 30.0°C (not 29.8°C) beating record of 2005
OSV2020 software hacked?
This evening, there was a news item on Dutch national tv (broadcast at 18:00) about the Dutch vote counting software OSV2020. See
also: Hacker discovered serious vulnerabilities in Dutch vote counting software.
It was not in the actual counting software, but the investigators found some
passwords through the installer, allowing them theoretically, to replace the
official counting software with a replacement that could change the summation.
For a detailed description, read: The importance of post-build audits: Do you know what you ship? It was
verified that no actual attack was performed and the the vulnerabilities were
closed. The official report in Dutch about this is: Opgeloste beveiligingsmelding inzake de ondersteunende software verkiezingen
(OSV2020). This again emphasizes the need for totally independent
verification based on the published files.
After the Storm
This evening, I visited the exhibition After
the Storm by Fernanda Gomes (on
instagram). She arrived
on July 5 in the Netherlands by plane and was stuck at the airport due to the
trains not running because of the Storm Poly. In the projects that she made since her stays, she was
wearing a blue dress. At the exhibition she wore a green dress. I understand
that that is related to the next theme. Before she did a project with the
colour red. I did not stay until the preformance that she was going to give.
I went to Amsterdam. On the way there, I traveled through Utrecht where I left
the train station to visit bookshops Steven Sterk and Aleph (just shortly).
In Amsterdam, I went to see the exhibition
The Art Experience at RTXP. It
mainly consisted of reproduction of famous paintings. They did not mention the
names of the artists that made the reproductions. There were some original art
works. I found the following noteworthy:
- Royal Flowers, Yvonne Michiels, 2020.
- Black Girl with a Pearl Earring, Mona van den Berg, 2020.
- Les Temps Perdu, Nard Kwast, 2020.
- Still life with Quince Apples and the Green Glass, Nard Kwast, 2022.
- Still life with "Perished Pears", Nard Kwast, 2022.
- Godess of the Night, Nard Kwast, 2019.
- Winter Landscape, Nard Kwast, 2009.
- La Lienne, Nard Kwast, 2021.
Next, I visited Foam Fotografiemuseum Amsterdam where I saw a number of exhibitions. I
first watched the documentary Seahorse Parents by Miriam Guttmann. Next, I saw the exhibition Next Level: Sara
Cwynar in reverse order. I found the following works noteworthy:
- Pamela as Pamela, 2023.
- Tracy in Camo II, 2023.
- Sahara from SSENSE.com 1, 2023.
- Red Film, 2018.
- Tracy (Yellow Grid), 2017.
- Rudy on Film in Western Costume, 2023.
Then I saw the major exhibition: A Play of Light and Shadow with photographs by Ara Güler. The photographs do not have titles. They are shown with
a location and a date. I found the following photographs noteworthy:
- Beyoğlu, Istanbul, 1955.
- Taşlıtarla, Istanbul, 1959.
- Beyoğlu, Istanbul, 1957. (sex worker)
- Gakatasaray, Istanbul, 1960s.
- Tophana, Istanbul, 1958,
- Old Galata Bridge, Istanbul, 1957.
- Istanbul. (kites)
- The Golden Horn, Istanbul, 1958
- Istanbul, 1964 (self portrait with camera)
- Revolution days, May-June, Istanbul, 1960.
- Noah's Ark, Adruaman, 1962.
- Ani, Kars, 1963.
- Antakya, 1960s.
- Alftred Hitchcock, United States, 1974.
- Imogen Cunningham, United States, 1974.
- Ansel Adams, United States, 1974.
- Salvador Dali, Paris, 1971.
- Portrait of Ara Güler by Imogen Cunningham, United States, 1974.
- Eitrea, 1978.
- Mount Arat, Ağri, 1965.
- Istanbyl, 1970s. (abstract)
- Istanbyl, 1970s. (abstract)
- Late 1940s/earlt 1950s (3×)
- Brigitte Bardot, Nice, France, 1957.
- Kim Novak, Cannes Film Festival, 1959.
- James Baldwin, Paris, France, 1973.
- Imogen Cunningham and Ara Güler, United States, 1974.
- Dave Brubeck, Unites States, 1974.
After this visited, I visited the following bookshops: De Slegte, Athenaeum
boekhandel Amsterdam, The American Book Center, and Scheltema Boekverkopers.
The later used to have a second hand section on the top floor. The remaindered
books (ramsj in Dutch) that used to be on the second or third floor now can
be found on the top floor. I found it a bit chaotic. I also went to the
high-end department store De Bijenkorf, where at 18:06:24 I bought a Moleskin daily planner for 2024
for € 23.90. The trip home by train took a bit longer due an
international train requiring reservations and two trains that were canceled.
I finished reading the book De Broodschrijver:
over de Herman Brood-biografie van Bart Chabot by Arjan Peters, which I
started reading this morning after I bought it on May 30. (Later, I discovered this was actual the second reading of the
book, the first time being April 3-4, 2011.) The book contains interviews of
Bart Chabot about his
writting the biography of Herman Brood. I read one part of the four book biography. Chabot wrote
this during a period of seven years. It was interesting to read (for a second
Last weekend, I worked on my Exact Cover
program in order to see if I could
get a beter estimate for the Octopuszle. I did
get it to work and also fixed a problem with calculating the estimate based on
statistics. I did find many new solutions to the puzzle, but the estimation
did not converge. This evening, I let it run with slightly different parameters
and it came back with much lower numbers. The numbers I have been seeing are
in the 10163 and 10166 range. Which is similar to what I
reported before. Among the solutions that were found by the various runs, there
were solutions that where rather similar, sometimes just with four tiles being
swapped. When I thought about this, I realized that it is actually quite
likely that these kind of swaps occur in any given solution (due to the
I got a reply to the report that I submitted on the second of
this month about the piece of stoneware that I found. It has been
registered under number 5463631100. The report states that it is (in Dutch)
'ruwwandig aardewerk, gedraaid', which translate to: 'rough-walled earthenware,
turned'. The report also states that it is possibly from the late Roman time,
which (in the Netherlands) is the periode from 270 to 450. This is a bit
earlier than the one I got on sixth of the month. When I
replied to that one that the piece was quite hard, I got the answer that it is
more likely that it is from a later period.
Exhibition of 6Sprong artist
In the afternoon, I went into the city and visted the exhibition Ateliers 6Sprong op bezoek at Concordia with works
by artist who have a studio at 6Sprong. I liked the following works:
This weekend and this evening, I spend some time writing a program to analyze
the solutions to the OctoPuszle I found last
weekend. First, I wrote some code to check the number of pairs of tiles that
can be swapped, meaning that there exists a pair of horizontal, vertical or
diagonal touching tiles that can be swapped with a similar pair elsewhere
because they match on the outside, but differ on the inside. I checked this
for all the solutions found. Below the number of solutions with the given
From this the average number of pairs of tiles that can be swap is 1.427715.
Next, I wrote some code to compare each combination of two solutions to see
how many differences there are between them and the smallest rectangle area in
which the differences occured. The most common number of differences between
two pairs is 253, meaning that there are just three tiles the same. This is
probably close to average number of tiles that any two solutions have in
common. Of the 890445 combinations of two solutions there were 184825 that had
253 differences. Although there are zero combinations with 238 differences,
there are many combinations with 54 and less differences. There are 1256
combinations with 35 differences. The frequences of the difference do not
match with the actual differences for all solutions. This is due to limited
number of solutions, some rather close to eachother, that were found with the
algoritm that was used. It is interesting to investigate the average number of
solutions that have a certain number of differences.
Wheat grain cleaning
Today at the issue of Herenboeren Usseler Es we
received approximately two kilos of wheat grain to clean. The wheat had already
gone through a winnowing machine twice. This is a hand-driven machine with which the
wheat is sieved and the chaff is blown away by wind. There is also a lot of
grass seed among the wheat. The purpose of cleansing (also called reading) is
to remove the last impurities. This mainly concerns seeds that are still among
the wheat. We quite enjoyed doing it. I did it at the end with a plastic fork
on a large plate, filling the plate with a handful of grain each time and then
push the grain forward with the fork and remove all the rubbish from between.
The last bit from the bag was the most work because most of the rubbish had
slowly fallen to the bottom by the shaking of us getting hands of grains out of
the bag. Last week, approximately 40 kilos of wheat was already ground at the
windmill in Lonneker.
This months interesting links
| August 2023
| October 2023