Re: [HACKERS] Anyone know if Alvaro is OK?

2010-03-02 Thread Chris Browne
scrawf...@pinpointresearch.com (Steve Crawford) writes:
 Marc G. Fournier wrote:

 Is there a higher then normal amount of earthquakes happening
 recently? haiti, japan just had one for 6.9, there was apparently
 one in illinos a few weeks back, one on the Russia/China/N.Korean
 border and now Chile?

 Random events come in bunches - something I always stop to remind
 myself of whenever there is a sudden bunch of quakes, celebrity
 deaths, plane crashes, etc. Especially with relatively unusual events
 like great-quakes and plane crashes, it can be tough to see if there
 is any signal in the noise - a job I have to leave to experienced
 statisticians.

I'll nit pick a little bit...

Random events are often *noticed* when there is some reason to think
it's an unusually large batch.

Nobody really notices the carnage on the highways, because,
stochastically, there are such a large number of events, both positive
and negative (e.g. - millions of people making it home safely, and a
tiny number that don't) that it's difficult for there to be a
sufficiently large number of adverse events to notice.

People are a lot more worried about terrorists than about car accidents,
even though the latter are *enormously* more likely to cause one's
demise, by a *huge* factor.  (This mismeasurement irritates me a lot,
particularly when I visit airports!)

2010 has had more news about earthquakes than other nearby years, but as
you say, it is not obvious that there is any signal to be found in the
noise.

http://en.wikipedia.org/wiki/List_of_deadly_earthquakes_since_1900 is
an interesting list.  Very few quakes are listed for 2009; I wonder if
this results from events not being reported yet?  Preceding years
consistently have quite a lot of deadly earthquakes, dating back for
many years.  From that list, Chile has been seeing pretty potent
earthquakes on a regular basis since 1905.

I'm mighty glad to hear that Alvaro is OK, and that things weren't too
disastrously shaken up, for him.
-- 
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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-03-02 Thread Greg Stark
On Mon, Mar 1, 2010 at 11:11 PM, Chris Browne cbbro...@acm.org wrote:
 Nobody really notices the carnage on the highways, because,
 stochastically, there are such a large number of events, both positive
 and negative (e.g. - millions of people making it home safely, and a
 tiny number that don't) that it's difficult for there to be a
 sufficiently large number of adverse events to notice.

I don't think the number of positive events factors into it. It's that
the law of large numbers kicks in and the rate of death is pretty much
constant. Every now and then there's an atypical weekend for a given
town or city and the death toll spikes and people do in fact notice.
Suddenly the news is filled with stories about the carnage the prior
weekend and various imagined causal factors just like when the stock
market goes up or down and the news people try to explain why.

 People are a lot more worried about terrorists than about car accidents,
 even though the latter are *enormously* more likely to cause one's
 demise, by a *huge* factor.  (This mismeasurement irritates me a lot,
 particularly when I visit airports!)

Well there is also a difference here. Because there is an active
opponent in the terrorism case the security has non-linear game-theory
effects. In the car safety case you could spend 10x as much money and
reduce accident death rates by 1/10th. But there's a point of
diminishing returns and an optimal value somewhere. In the case of
terrorism it may well be the case that if you spend any money on
security you must spend a lot of money for it to reach the threshold
at which terrorists redirect their attacks elsewhere.

Earthquakes are of course not in that category. They just occur rarely
enough and then our perception of their severity is heavily influenced
by where they occur so clumpings are just inevitable.

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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-03-01 Thread Steve Crawford

Marc G. Fournier wrote:


Is there a higher then normal amount of earthquakes happening 
recently? haiti, japan just had one for 6.9, there was apparently one 
in illinos a few weeks back, one on the Russia/China/N.Korean border 
and now Chile? 


Random events come in bunches - something I always stop to remind myself 
of whenever there is a sudden bunch of quakes, celebrity deaths, plane 
crashes, etc. Especially with relatively unusual events like 
great-quakes and plane crashes, it can be tough to see if there is any 
signal in the noise - a job I have to leave to experienced statisticians.


The world averages one great (8+) earthquake/year which, of course, 
means some years like 2008 have none but 2007 had four. 7-7.9 like Haiti 
or our own Loma Prieta quake are far more common averaging ~17/year.


Haiti is a catastrophe not because the quake was of unusual size (it 
barely made it into the 7-7.9 category and released less that 1/15 the 
energy of the Chile quake) but because the hypocenter was both shallow 
and fairly close to Port-au-Prince combined with terrible construction 
standards and virtually non-existent emergency-response capabilities in 
Haiti.


Some general quake stats/facts are here:
http://earthquake.usgs.gov/earthquakes/eqarchives/year/eqstats.php

Cheers,
Steve


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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-28 Thread Devrim GÜNDÜZ

I'm happy that you and your family are fine, Alvaro. Same from my wife,
too.

On Sat, 2010-02-27 at 19:45 -0800, Alvaro Herrera wrote:
 Hi.  We're out of town right now, and it seems I can't get to my home
 machine (probably just a loose cable).  Our building was shaken badly
 enough that we'll have a lot of work to do to make it usable again.
 
 Our earthquake was 8.3 or 8.8 depending on who you ask, and whatever
 it really was, it was strong enough to tear down a bunch of
 buildings.  Not on my zone though, fortunately for us.  I have
 several friends on the worst area though :-(
 
 (I have to note that buildings here are built to resist this kind of
 thing, so the fact that some went down means that it was really
 strong)
 
 Re: the more frequent earthquakes, yeah I was thinking the same
 today.  An actual scientific study would be more useful than idle
 speculation though ...
 
 
-- 
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http://www.gunduz.org  Twitter: http://twitter.com/devrimgunduz


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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-28 Thread Boszormenyi Zoltan
It must be that someone has dropped a small amount of
cheese into a lactose-intolerant volcano god...

Marc G. Fournier írta:

 Is there a higher then normal amount of earthquakes happening
 recently? haiti, japan just had one for 6.9, there was apparently one
 in illinos a few weeks back, one on the Russia/China/N.Korean border
 and now Chile?

 Hrmmm ...

 On Sat, 27 Feb 2010, Bruce Momjian wrote:

 Josh Berkus wrote:
 There was a huge earthquake in Chile this morning ... Alvaro, you OK?

 Yes, I talked to Alvaro via IM about 2 hours ago.  He was already
 online.  His apartment building was shaken up but undamaged and his
 family is fine too.

 -- 
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  EnterpriseDB http://enterprisedb.com

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than these cometh of evil. (Matthew 5:37) - basics of digital technology.
May your kingdom come - superficial description of plate tectonics

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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-28 Thread Ron Mayer
Jaime Casanova wrote:
 At Saturday, 02/27/2010 on 4:21 pm Marc G. Fournier scra...@hub.org wrote:
 On Sat, Feb 27, 2010 at 10:45 PM, Alvaro Herrera alvhe...@alvh.no-ip.org 
 wrote:
 Is there a higher then normal amount of earthquakes happening recently?
 
 Re: the more frequent earthquakes, yeah I was thinking the same today.  An
 actual scientific study would be more useful than idle speculation though
 
 This is a technical list so i won't insist on this but those of you
 that wanna give a try can read Matthew 24:3, 7, 8 and Luke 21:11

I find these links useful:

http://earthquake.usgs.gov/earthquakes/eqinthenews/2010/
http://earthquake.usgs.gov/earthquakes/eqinthenews/2009/   ...

I note
an 8.1 in Samoa in Sep 2009
no 8.x's in 2008
an 8.5 in Sumatra Sep 12 2007
an 8.0 in Peru, Aug 2007
an 8.1 in Solomon Islands Apr 2007
an 8.1 in Kuril Islands Jan 13 2007
an 8.3 in Kuril Islands Nov 2006
an 8.7 in Sumatra, March 2005
an 8.1 in Macquarie Island Dec 2004
an 8.3 in Hokkaido Japan, Sep 2003


So yeah, if we're counting 8.8+'s this year's worse than usual;
but 2005's 8.7's close.
But if we're counting anything over 8.0, 2007's up there as well.


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[HACKERS] Anyone know if Alvaro is OK?

2010-02-27 Thread Josh Berkus
There was a huge earthquake in Chile this morning ... Alvaro, you OK?

--Josh Berkus

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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-27 Thread Bruce Momjian
Josh Berkus wrote:
 There was a huge earthquake in Chile this morning ... Alvaro, you OK?

Yes, I talked to Alvaro via IM about 2 hours ago.  He was already
online.  His apartment building was shaken up but undamaged and his
family is fine too.

-- 
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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-27 Thread Marc G. Fournier


Is there a higher then normal amount of earthquakes happening recently? 
haiti, japan just had one for 6.9, there was apparently one in illinos a 
few weeks back, one on the Russia/China/N.Korean border and now Chile?


Hrmmm ...

On Sat, 27 Feb 2010, Bruce Momjian wrote:


Josh Berkus wrote:

There was a huge earthquake in Chile this morning ... Alvaro, you OK?


Yes, I talked to Alvaro via IM about 2 hours ago.  He was already
online.  His apartment building was shaken up but undamaged and his
family is fine too.

--
 Bruce Momjian  br...@momjian.ushttp://momjian.us
 EnterpriseDB http://enterprisedb.com

 PG East:  http://www.enterprisedb.com/community/nav-pg-east-2010.do

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scra...@hub.org http://www.hub.org

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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-27 Thread Robert Haas
On Sat, Feb 27, 2010 at 7:21 PM, Marc G. Fournier scra...@hub.org wrote:
 Is there a higher then normal amount of earthquakes happening recently?
 haiti, japan just had one for 6.9, there was apparently one in illinos a few
 weeks back, one on the Russia/China/N.Korean border and now Chile?

 Hrmmm ...

Should I rocket my children to a solar system with a yellow sun?

...Robert

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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-27 Thread Michael Glaesemann


On Feb 27, 2010, at 20:33 , Robert Haas wrote:

On Sat, Feb 27, 2010 at 7:21 PM, Marc G. Fournier scra...@hub.org  
wrote:
Is there a higher then normal amount of earthquakes happening  
recently?
haiti, japan just had one for 6.9, there was apparently one in  
illinos a few

weeks back, one on the Russia/China/N.Korean border and now Chile?

Hrmmm ...


Should I rocket my children to a solar system with a yellow sun?

...Robert


Isn't that Rob-el?

Michael Glaesemann
grzm seespotcode net




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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-27 Thread Alvaro Herrera
Hi.  We're out of town right now, and it seems I can't get to my home
machine (probably just a loose cable).  Our building was shaken badly
enough that we'll have a lot of work to do to make it usable again.

Our earthquake was 8.3 or 8.8 depending on who you ask, and whatever
it really was, it was strong enough to tear down a bunch of
buildings.  Not on my zone though, fortunately for us.  I have
several friends on the worst area though :-(

(I have to note that buildings here are built to resist this kind of
thing, so the fact that some went down means that it was really
strong)

Re: the more frequent earthquakes, yeah I was thinking the same
today.  An actual scientific study would be more useful than idle
speculation though ...

At Saturday, 02/27/2010 on 4:21 pm Marc G. Fournier  wrote:

Is there a higher then normal amount of earthquakes happening
recently? 
haiti, japan just had one for 6.9, there was apparently one in
illinos a 
few weeks back, one on the Russia/China/N.Korean border and now
Chile?

 




Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-27 Thread Marc G. Fournier

On Sat, 27 Feb 2010, Alvaro Herrera wrote:


Hi.  We're out of town right now, and it seems I can't get to my home
machine (probably just a loose cable).  Our building was shaken badly
enough that we'll have a lot of work to do to make it usable again.

Our earthquake was 8.3 or 8.8 depending on who you ask, and whatever it
really was, it was strong enough to tear down a bunch of buildings.  Not on
my zone though, fortunately for us.  I have several friends on the worst
area though :-(


Glad to hear you were in a safer zone .. something I've never had to 
weather so far in my life, and would rather keep it that way ;(


Re: the more frequent earthquakes, yeah I was thinking the same today.  
An actual scientific study would be more useful than idle speculation 
though ...


One comment that one guy at work had about this was along the lines of 
aftershocks, where there is a ripple effect that radiates out from a big 
one affecting seemingly unrelated areas ... not sure how much I subscribe 
to that theory, as one would think that the 'aftershocks' would be less 
intense then the original, and, so far, 8.3/8.8 sounds *alot* higher then 
anything I've heard of recently ...


My thoughts and prays go out to you and your family ...


Marc G. FournierHub.Org Hosting Solutions S.A.
scra...@hub.org http://www.hub.org

Yahoo:yscrappySkype: hub.orgICQ:7615664MSN:scra...@hub.org

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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-27 Thread Jaime Casanova
At Saturday, 02/27/2010 on 4:21 pm Marc G. Fournier scra...@hub.org wrote:
 On Sat, Feb 27, 2010 at 10:45 PM, Alvaro Herrera alvhe...@alvh.no-ip.org 
 wrote:

 Is there a higher then normal amount of earthquakes happening recently?
 haiti, japan just had one for 6.9, there was apparently one in illinos a
 few weeks back, one on the Russia/China/N.Korean border and now Chile?

 Re: the more frequent earthquakes, yeah I was thinking the same today.  An
 actual scientific study would be more useful than idle speculation though


This is a technical list so i won't insist on this but those of you
that wanna give a try can read Matthew 24:3, 7, 8 and Luke 21:11

-- 
Atentamente,
Jaime Casanova
Soporte y capacitación de PostgreSQL
Asesoría y desarrollo de sistemas
Guayaquil - Ecuador
Cel. +59387171157

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Re: [HACKERS] Anyone know if Alvaro is OK?

2010-02-27 Thread Hiroshi Saito

Hi Alvaro.

Ooops, surprised at news now:-(
I'm wishing you and  your familys is no trouble.
However,  I look at one relief because your mail has arrived. !

- Original Message - 
From: Marc G. Fournier scra...@hub.org




On Sat, 27 Feb 2010, Alvaro Herrera wrote:


Hi. We're out of town right now, and it seems I can't get to my home
machine (probably just a loose cable). Our building was shaken badly
enough that we'll have a lot of work to do to make it usable again.

Our earthquake was 8.3 or 8.8 depending on who you ask, and whatever it
really was, it was strong enough to tear down a bunch of buildings. Not on
my zone though, fortunately for us. I have several friends on the worst
area though :-(


Glad to hear you were in a safer zone .. something I've never had to 
weather so far in my life, and would rather keep it that way ;(


Re: the more frequent earthquakes, yeah I was thinking the same today. 
An actual scientific study would be more useful than idle speculation 
though ...


One comment that one guy at work had about this was along the lines of 
aftershocks, where there is a ripple effect that radiates out from a big 
one affecting seemingly unrelated areas ... not sure how much I subscribe 
to that theory, as one would think that the 'aftershocks' would be less 
intense then the original, and, so far, 8.3/8.8 sounds *alot* higher then 
anything I've heard of recently ...


My thoughts and prays go out to you and your family ...


Marc G. FournierHub.Org Hosting Solutions S.A.
scra...@hub.org http://www.hub.org

Yahoo:yscrappySkype: hub.orgICQ:7615664MSN:scra...@hub.org

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