Sangaku Japanese Geometry Problems

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Level: High School, SAT Prep, College geometry

IKN Recommends....

...this new blog on the Japanese tsunami and nuclear situation. Site friend Ryu has done a fine thing and has started blogging in English about what's going on in Japan, so if you like your news unspinned by either side and direct from the people that matter, check out his blog now. It's also found on our linklist as of today. You rule Ryu.

A Japanese reader writes in

These are the people that really matter, a ordinary guy out there who's concerned about how things are developing, but keeping it real and trying to get informed. Thanks Ryu, good of you to take time out and write in. Hopefully, others will benefit from your vigilance, too. Here's Ryu's mail:

Otto,

Hi, my name is Ryu from Japan. I've been reading your blog for quite a while now and really enjoying it. Anyway, I'm in the western part of Japan so I'm affected by the recent earthquake. But, the situation in the nuclear power plants in Fukushima is really concerning. So, I'm trying to get information as much as possible. Yeah, your blog posts are helpful, too. So, I've been looking through the web and would like to share some stuff I found.

Japan Visual Journalists Association's members have been in the town of Futaba,  where the Fukushima No.1 Power Plant located. The members are the well-known  photojournlists like Takashi Morizumi and Ryuichi Hirokawa. And, here's what  they found so far. Well, it's in Japanese, and what it says is that at 10:20am, March 13th, they  measured radiation at the front gate of the town hall with three kinds of  equipments (BEIGER COUNTR DZX2, VICTOREEN 209-SI, and MYRate PRD-10), and the  amount of radiation is well over the limits they can detect. The journalists  also went to the general hospital, and the result was the same.

Another good source of information is Citizens' Nuclear Information Center's  website. They had a press conference at the Foreign Correspondents Club of  Japan, and you can watch the video. It's in English as well. Here's the direct  link to the video:

I'm just a guy who is very concerned with the situation and hoping it won't get  worse. I just wanted to share the info so maybe someone can find it useful. If  you need more precise translation for the articles, please let me know.

Regards,
Ryu

UPDATE: Ryu shares more. Thanks man:

You may have noticed already, but Citizens' Nuclear Information Center has its dedicated English site.
http://www.cnic.jp/english/

Also, a non-profit group called Green Action is blogging about the nuclear situation in English. They interviewed Japan Visual Journalists Association's journalists who went to near the Fukushima Daiichi. Unfortunately the interview video is in Japanese, but they transcribed and translated in English. It's better than my summary.

http://www.greenaction-japan.org/modules/entop2/

So, you can share the links on your blog if you'd like. Thanks for your attention, and I really appreciate you and people from all over the world expressing their support. I hope the situation will be like what the article, you posted the linked to, said.

Best,
Ryu

Straight, sensible and informed talk on the Japanese nuclear situation

Highly recommended is the twitterfeed of @arclight who knows the field expertly (just check out his tweets and they'll leave you in little doubt) and is out there informing and keeping it real. There's no hyperbolic spin given out on either side of this serious situation by arclight, just facts and reasonable interpretations.

Go read now.

Basic deduction

The unfolding situation in Japan isn't one that truly falls under the scope of this blog, so although it's consuming far too much of my screentime this morning it's best left to other places and smarter voices for commentary. However, a couple of random thoughts.

1) Any statement along the lines of "there is no need for alarm" does not jive with images of a large explosion at a nuclear power plant. It matters not whether radiation levels are reported to have dropped afterwards or that authorities tell us the main metal reactor wall was undamaged by the blast. Let's be clear here: There is every cause for a lot of alarm.

2) By a combo of geographical focus, ignorance and plain luck, your author doesn't hold much in the way of U exposure in the junior market. This may turn out to be a good thing, as anyone involved in the sector around the 3 Mile Island can testify. Talk to those guys and you'll hear how sector funding turned itself off like a spigot from one week to the other and it didn't matter a jot whether the decisions taken were rational or otherwise. I do feel a little callous about turning my thoughts to capitalism and markets at this early stage, but it's a reflection I have on the matter, so I'm noting it down here and being done.

And now I have a weekly to write. So I'd better get on with it and tear myself away from events that really deserve the undivided attention of us all.

Update: Reader AS sends in the following re-printable Stratfor piece:

A March 12 explosion at the earthquake-damaged Fukushima Daiichi nuclear power plant in Okuma, Japan, appears to have caused a reactor meltdown. 

The key piece of technology in a nuclear reactor is the control rods. Nuclear fuel generates neutrons; controlling the flow and production rate of these neutrons is what generates heat, and from the heat, electricity. Control rods absorb neutrons — the rods slide in and out of the fuel mass to regulate neutron emission, and with it, heat and electricity generation. 

A meltdown occurs when the control rods fail to contain the neutron emission and the heat levels inside the reactor thus rise to a point that the fuel itself melts, generally temperatures in excess of 1,000 degrees Fahrenheit, causing uncontrolled radiation-generating reactions and making approaching the reactor incredibly hazardous. A meltdown does not necessarily mean a nuclear disaster. As long as the reactor core, which is specifically designed to contain high levels of heat, pressure and radiation, remains intact, the melted fuel can be dealt with. If the core breaches but the containment facility built around the core remains intact, the melted fuel can still be dealt with — typically entombed within specialized concrete — but the cost and difficulty of such containment increases exponentially. 

However, the earthquake in Japan, in addition to damaging the ability of the control rods to regulate the fuel — and the reactor’s coolant system — appears to have damaged the containment facility, and the explosion almost certainly did. There have been reports of “white smoke,” perhaps burning concrete, coming from the scene of the explosion, indicating a containment breach and the almost certain escape of significant amounts of radiation. 

At this point, events in Japan bear many similarities to the 1986 Chernobyl disaster. Reports indicate that up to 1.5 meters (4.9 feet) of the reactor fuel was exposed. The reactor fuel appears to have at least partially melted, and the subsequent explosion has shattered the walls and roof of the containment vessel — and likely the remaining useful parts of the control and coolant systems. 

And so now the question is simple: Did the floor of the containment vessel crack? If not, the situation can still be salvaged by somehow re-containing the nuclear core. But if the floor has cracked, it is highly likely that the melting fuel will burn through the floor of the containment system and enter the ground. This has never happened before but has always been the nightmare scenario for a nuclear power event — in this scenario, containment goes from being merely dangerous, time consuming and expensive to nearly impossible. 

Radiation exposure for the average individual is 620 millirems per year, split about evenly between manmade and natural sources. The firefighters who served at the Chernobyl plant were exposed to between 80,000 and 1.6 million millirems. The Nuclear Regulatory Commission estimates that exposure to 375,000 to 500,000 millirems would be sufficient to cause death within three months for half of those exposed. A 30-kilometer-radius (19 miles) no-go zone remains at Chernobyl to this day. Japan’s troubled reactor site is about 300 kilometers from Tokyo. 

The latest report from the damaged power plant indicated that exposure rates outside the plant were at about 620 millirems per hour, though it is not clear whether that report came before or after the reactor’s containment structure exploded. 

This report may be forwarded or republished on your website with attribution to www.stratfor.com

UPDATE 2: A final chunkette and we're done. Here's a mail received from long-standing reader RB, a person with an opinion I always listen to. As usual, he makes good points

"2) By a combo of geographical focus, ignorance and plain luck, your author doesn't hold much in the way of U exposure in the junior market. This may turn out to be a good thing, as anyone involved in the sector around the 3 Mile Island can testify. Talk to those guys and you'll hear how sector funding turned itself off like a spigot from one week to the other and it didn't matter a jot whether the decisions taken were rational or otherwise. I do feel a little callous about turning my thoughts to capitalism and markets at this early stage, but it's a reflection I have on the matter, so I'm noting it down here and being done." 

Nothing to apologize for - when you train your mind to draw inferences from events, you automatically consider these things.

I agree up to a point - we'll definitely see a sell-off and anyone aiming to build nuclear plants in the US or anywhere with a strong green lobby is probably toast, but there's one element to the equation that wasn't there the last time around: China.  I expect they'll use the opportunity to pick up companies on the cheap, especially those with production or proven deposits outside the USA. The other thing that comes out of this is reduced supply, which over time means much higher u308 prices. I dare say this puts a bid under coal as well.

Moral dilemmas confront us at every stage of our lives, but there's a difference between reacting to an event, as opposed to taking advantage. Taking advantage is when you turn a blind eye to abuses of the kind you document in your blog. Reacting is simply recognizing the likely course of events and positioning yourself accordingly.  Both are part of the capitalist equation, but not exclusive to it. Human nature is what it is, and any other system of arranging our affairs will produce the same, or worse results.

This for the ages


Amazing.

Japan, Chile, nuclear power and earthquake risk

Scotia daily mining scoop e-mail has a smart rundown of market implications of the Japan earthquake this morning and includes this point as one of the things to watch:

c)       Nuclear Plants:  The International Atomic Energy Agency’s Incident and Emergency Centre noted that four of Japan ’s nuclear power plants located near the quake-impacted area have been shut down and that a fire at the Onagawa nuclear plant has been extinguished.  However, it also noted that “a heightened state of alert has been declared at Fukushima Daiichi nuclear power plant”.  Something to keep an eye on considering earthquake and terrorist attacks are often cited as risks by nuclear power opponents.   http://news.smh.com.au/breaking-news-world/no-radiation-leaks-from-japan-nuke-plants-20110312-1brnk.html

Your author's thoughts immediately turned to Chile and its rising star politico, Mining and Energy Minister Laurence Golborne, currently riding a continued wave of popularity after being the centre of the successful rescue of "the 33". Golborne has recently been a strong proponent of nuclear power for Chile and has also minimized the potential dangers of earthquake risk to such a strategy (and we're talking Chile here folks, land of serious shakers).

Japanese Robotics: Ishikawa-Komuro Laboratory

Video and News
Department of Information Physics and Computing, Department of Creative Informatics, The University of Tokyo.

Click the figure below to see the video and news.


See more:
Japanese Robotics: Ishikawa-Komuro Lab

The Abacus in Japan: Amazing Math Video

Video
The abacus is an excellent substitute for rote memorization of multiplication tables. Abacus calculation relies on the manipulation of beads rather than use of traditional arithmetic.
Click the figure below to see the video.


See more:
The abacus in Japan

Peruvian reality check

More claptrap from the USA's new best regional friend, i.e. Twobreakfasts' Peru.

February 24th: Peru Ex-Vice Minister of Commerce gives a bright and shiny interview to El Comercio, explaining how it would be great to be the supplier to Japanese industry.

February 25th: Japan's export trade figures show a 45.7% YoY drop the country runs a record deficit and goes deeper into recession.

It's incredible the lengths this officialist mouthpiece Comercio will go to get a positive spin on things. Yep, they featured the EX VICE minister, a nonentity named Diego Calmet (probably now at a nce cushy post with Toyota or Sumitomo or something). These people will do anything and say anything to maintain this ongoing lie.

Lilly-livered yellow-bellied political opportunists and their lapdog media are currently selling a whole country down the river in exchange for some nominal GDP growth number that is largely dependent on foreign investors coming in and extracting all profits as remittances. Peru's pandering to the failed neoliberal policies of the United States and their corrupt banking system makes me want to vomit. Watching a whole country get raped by greedy and uncaring egoists is not much fun.

Studies reveal DNA links between Pre-Inca Mochicas and Japanese

A study of ancient reveals an interesting finding. The second phase of the research will analyze the DNA of the descendants.
To confirm the ties that existed between the people of Lambayeque, Peru and citizens of other parts of the ancient world, Dr. Ken-Ichi Shinoda conducted during three years, a series of DNA analysis, with support from U.S. laboratories, under the coordination of the head of the Archaeological Project Sicán, Izumi Shimada.




Continue reading at:
incas.homestead.com/genetic_link_mochica_japanese_shinoda_dna.html