What I Learnt Today

Add a comment

The Japanese spirit of ‘falling forwards’ has inspired this blog from Day 1, and the philosophy of Kaizen informs our efforts in Practice Improvement.

The resilience and resourcefulness of the Japanese people is remarkable – but how would you start to recover from the destruction we have seen this week.

The enormity of the task is made clear in a slideshow of ‘before and after’ shots Google has posted to Picasso.

 

This eye witness video on Gizomdo shows how quickly a stream flowing down a street changed into an ocean flowing through a town.

Google Earth have set up special resources that demonstrate the extent of the destruction

 

View Larger Map

 

With 500,000 people now homeless, our thoughts and prayers go out to the Japanese people.

http://redcross.org.au/japan2011.htm

 

Add a comment

On the weekend we attended a birthday party where there were some excellent speeches.

It is normal to be anxious before giving a talk or making a speech. Using this nervous energy is the key to being natural and engaging. At a 50th birthday party at the weekend we heard some excellent speeches.

It is a great pity that we miss out on the wisdom of many people because their anxiety prevents them from sharing it before a crowd.

The most important part of public speaking is being prepared. I’m in awe of people who can get up before a crowd and speak completely off the cuff. Some politicans I’ve seen are excellent at this (Tony Abbott is very good, and I suspect Julia Gillard is also). School teachers are also excellent at speaking without much notice. For us lesser mortals, the key to giving a good speech is preparation.

At our workshops, I’ve seen some professional speakers give wonderfully engaging, funny and informative talks – and they appear to be making it up as they go along. When we get them back at subsequent workshops, they give the same ‘impromptu’ talk – word for word, pause for pause, gesture for gesture. Preparation.

Garr Reynolds, our friend from Presentation Zen, has a post this week on ‘Dealing with Public Speaking Nerves‘. He includes five tips from Les Posen, a Melbourne based psychologist who has his own blog called ‘Presentation Magic‘. 

Les’s tip are:

1. Chunking and exposure.

Break your talk into small parts.

 

2. Rehearsal.

Visualise yourself wowing the crowd as you practice

 

3. Self-talk.

“I can do this”.

 

4. Arousal control via diaphragmatic breathing.

Slow, deep breaths.

 

5. Deliberate practice.

Practice the beginning, ending and other key parts of the talk.

You can read more about Les’s tips at Presentation Zen. 

I look forward to seeing and hearing your next ‘tour de force’.

PS. I suspect some of the nerves of the speakers at the birthday party we attended were quelled using a very traditional liquid remedy (or two). Moderation is the key to this particular cure.

Add a comment

Internet access on the go using your iPhone as a modem.

Apple released an upgrade to the iPhone operating system this week (iOS 4.3), which makes it easy to create a ‘Personal Hotspot’ using your iPhone.

This means that you can use your iPhone to give your laptop or iPad access to the internet. This is of particular advantage if you are using the non-3G enabled iPad (Robyn take note).

It is easy to activate  ‘Personal Hotspot’.

Open ‘Settings’ on your iPhone

Select ‘Personal Hot Spot’

You will see that a random password has been supplied. Change it if you like.

Slide the switch to turn Personal Hot Spot On.

That’s it.

If you have an iPhone 4, your phone will be discoverable as one of the WiFi networks available to your laptop or iPad(on the Mac, this is from the Airport menu). Up to 3 devices can network via WiFi.

You will also be able to use the HotSpot via a USB connection or Bluetooth – so you could provide internet access to 5 devices altogether.

(If you have an iPhone 3 or 3GS, only the HotSpot or Bluetooth options are available – the WiFi option does not work on these older models)

Make sure that you have a good data plan before using your iPhone as a hot spot. Excess data charges can be vey high – especially overseas!

 

Add a comment

Seismograph at Riverview Observatory, Sydney.

The Earthquake this weekend in Japan measured 8.9 on the Richter Scale. Christchurch’s earthquake on Feb 21st scored 6.3. Yet they say Japan’s was 1000 times stronger than New Zealand’s. How does that work?

The magnitude of an earthquake is measured using a scale developed by Charles Richter in 1934.  It is based on the largest earth movement detected during a quake on a seismograph. The range of possible wave amplitudes is vast – from tiny movements that humans won’t notice to the enormous tremors we have seen in Japan and NZ.

This is the seismograph recording taken from the Riverview Observatory in Syndey on March 11th this week. You can see the Honshu earthquake hitting at 5.46 (UTC)

Because of the large range of possible readings, the Richter Scale is logarithmic. This means that a quake that is one unit bigger than another on the scale actually causes 10 times more movement.  A quake measuring 9 causes ten times bigger movement than a quake measuring 8, one hundred times more than a quake measuring 7, and a thousand times more than a quake measuring 6.

This table, reproduced from http://www.geo.mtu.edu/UPSeis/magnitude.html, shows how earthquakes are graded according to this scale.

Earthquake Magnitude Scale

Magnitude	Earthquake Effects	Estimated Number Each Year
2.5 or less	Usually not felt, but can be recorded by seismograph.	900,000
2.5 to 5.4	Often felt, but only causes minor damage.	30,000
5.5 to 6.0	Slight damage to buildings and other structures.	500
6.1 to 6.9	May cause a lot of damage in very populated areas.	100
7.0 to 7.9	Major earthquake. Serious damage.	20
8.0 or greater	Great earthquake. Can totally destroy communities near the epicenter.	One every 5 to 10 years

So the Richter Scale measures the amount of shaking movement an earthquake causes. However, the actual destructive power of an earthquake (it’s seismic power) scales to a higher factor against the amount of movement. So, a difference of one on the Richter Scale means 10 times the amount of shake but 30 times the destructive power. A difference on the Richter Sale of 2 means 100 times more movement but 1000 times more destructive power. Hence the relationship quoted in the initial text above. The Christchurch earthquake had 42 Kilotons of energy – the Japanese earthquake 336 Megatons!

The amount of damage done by a quake to a city also depends on how close the epicenter of the quake is to the city centre, how deep the quake is, and on the nature of the buildings in the city.

The earthquake in Christchurch was only 6km from the city center, at a depth pf 5km. The Japanese earthquake was 130km from Sendai (in the Pacific Ocean) at a depth of 24km. (most of the destruction has been caused by the ensuing tsunamai).

Earth tremors occur every 5 minutes in Japan, and there are 2000 quakes a year that can be felt by people. Because of the risk, traditional houses use paper architecture, and there are earthquake instruction signs in every building. This all seemed funny when we were there – but very sensible now.

On the US Geological Survery site you can compare detailed measurements of the Japanese earthquake on March 11th and of the Christchurch quake on Feb 21st

The recent Japanese earthquake was one of the largest ever recorded. The Indian Ocean earthquake in 2004 (which caused the devastating Tsunamai_ measured 9.3, and the largest earthquake ever recorded was the Valdivia earthquake in Chile in 1960, measuring 9.5.

It is somewhat sobering to view all the earthquakes happenning around the world each day. There have been 507 earthquakes in the last week, as shown on the map below. You can check the live report here.

 

 

 

 

Add a comment