Showing posts with label dynamic. Show all posts
Showing posts with label dynamic. Show all posts

Monday, April 8, 2013

NASA's Mars Rover Curiosity: Remaining atmosphere still dynamic

This image shows the first holes into rock drilled by NASA's Mars rover Curiosity, with drill tailings around the holes plus piles of powdered rock collected from the deeper hole and later discarded after other portions of the sample had been delivered to analytical instruments inside the rover. 

Credit Image: NASA/JPL-Caltech/MSSS

Mars has lost much of its original atmosphere, but what's left remains quite active, recent findings from NASA's Mars rover Curiosity indicate.

Rover team members reported diverse findings today at the European Geosciences Union 2013 General Assembly, in Vienna.

Evidence has strengthened this month that Mars lost much of its original atmosphere by a process of gas escaping from the top of the atmosphere.

Curiosity's Sample Analysis at Mars (SAM) instrument analyzed an atmosphere sample last week using a process that concentrates selected gases.

The results provided the most precise measurements ever made of isotopes of argon in the Martian atmosphere.

Isotopes are variants of the same element with different atomic weights.

"We found arguably the clearest and most robust signature of atmospheric loss on Mars," said Sushil Atreya, a SAM co-investigator at the University of Michigan, Ann Arbor.

This illustration shows the instruments and subsystems of the Sample Analysis at Mars (SAM) suite on the Curiosity Rover of NASA's Mars Science Laboratory Project. 

Credit Image: NASA/JPL-Caltech 

SAM found that the Martian atmosphere has about four times as much of a lighter stable isotope (argon-36) compared to a heavier one (argon-38).

This removes previous uncertainty about the ratio in the Martian atmosphere from 1976 measurements from NASA's Viking project and from small volumes of argon extracted from Martian meteorites.

The ratio is much lower than the solar system's original ratio, as estimated from argon-isotope measurements of the sun and Jupiter.

This points to a process at Mars that favored preferential loss of the lighter isotope over the heavier one.

Curiosity measures several variables in today's Martian atmosphere with the Rover Environmental Monitoring Station (REMS), provided by Spain.

Wednesday, August 1, 2012

Tail Assisted Dynamic Self Righting Robot - YouTube



This video is a demonstration of two robots, the 160g Tailbot (a 4 wheeled robot) and the 8.1kg XRL (a RHex hexapedal robot), using their inertial tails to perform aerial self righting behaviours.

What a difference a tail makes. Robots with tails can fly through the air while maintaining their orientation, evidence that appendages for robots can enhance performance and effectiveness.

Past research from UC Berkeley explored what happens when you give a wheeled robot a controllable tail, as that used by the lizard.

Now an extremely adept X-RHex Lite, or XRL for short, robot shows it can stay upright no matter how challenging the attempt is to make it do otherwise.

The XRL is the result of a collaboration between UC Berkeley and the University of Pennsylvania.

The robot is based on RHex, UPenn's original hexapod robot, but the most distinguishing features of the newer version are that it is more modular, and it has an actuated tail. The common challenge has been getting mobile robots to land and stay on their feet.

This work was presented at CLAWAR 2012, and the paper can be found here: http://kodlab.seas.upenn.edu/

Saturday, October 24, 2009

Dyslexia Untied: Prevention is Preferred

Olive Hickmott: Wouldn't prevention be better?

I am an experienced health and education coach, and have been for many years. I enjoy helping and working with people who are facing particular challenges.

I try to avoid complexity at least until I am confident that all the simple approaches have been taken. Complexity can come in many forms, normally I see it in the form of other people's intervention and interpretations.

Unfortunately, this unwanted complexity can come from the medical establishment who are often too quick to 'label' a child in difficulty and dismiss any claims that there is an intelligent spirit trapped inside, screaming to get out. They don't have the key to unlock the door and doubt that anyone else has, meanwhile an innocent child is condemn to a life of torment.

There is a key and there is a way to release the child within. You need patience and insight but most of all you need to listen. People do tend to over complicate things and then it is more difficult to see with true clarity, what is really happening and what is being most effective.

On meeting a new client, I always feel a sense of reluctance. Part of my reluctance in jumping straight in, is that I want to quickly solve the problem. I want to release this child from it's misery but I have this insistent little voice in my head, which is encouraging me to find the real source of the problem and to try and 'prevent' things happening in the first place.

It is always easier to address and treat the symptoms but this will not solve the problem, it will simply re-occur in a different form later. Something that is all to obvious in the short term effect of 'gadgets' and 'gizmos'.

Prevention is so much less stressful for everyone. It takes less effort, uses less time and resources and is much more effective. We all know it is difficult to break regular habits and practices, even if they are detrimental to our good health. We see the signs on cigarette packets but people still smoke.

I am currently taking part in a research project that will prove the real effectiveness of the work I do; helping people change their experience when they are very confused, clarifying their goals, building on their successes, etc. This research is aimed at overcoming the negative attitude of some educationlists and the cynical outlook of modern society.

It is important to prove the effectiveness of prevention, so that we can demolish these artificial barriers to progress and unshackle the men, women and children who are burdened by this way of seeing and perceiving their world.

Clearly, this will mean introducing the concept of 'visualisation' into teacher training, at an early stage and then adopting it as 'normal practice' in every school in the English speaking world. Having said, English speaking, the idea of 'visualisation' as a tool for enabling literacy is, by it's nature, not language specific.

It is interesting to note that Dyslexia is almost unknown in countries like China and Japan, where the symbols used in their written language are based on representative images or 'picture' characters.

Releasing the literacy geni from it's 'bottle', is not going to be an easy task and will require a lot of effort from everyone. If you would like to help support this worthy challenge in any way possible, I should be delighted to hear from you.

There is still much work to be done. The goal of overcoming Dyslexia, improving literacy and watching the trapped spirit of a child emerge from confusion, is amazing. The sooner you contact me, the sooner the adventure begins!

Olive Hickmott - Empowering Learning (Everywhere)

Dyslexia Untied: ADHD / Dyspraxia research

Olive Hickmott: ADHD / Dyspraxia research

I have developed a New Perspectives model for Dyspraxia and ADHD. At a recent Dyspraxia conference of parents and teachers this really resonated with all the delegates I met.

The model brings together my work on literacy and numeracy and adds energetic skills for helping youngsters ground and clearing energy blocks, through EnergeticNLP, that I have been using for the 3 years for people with chronic health conditions.

The results are extraordinary and offer a really new opportunity for these youngsters. Clearing blocked energy helps youngsters and parents alike let go of negative emotions. Recently a mum improved her own 'tennis elbow' whilst helping her daughter and a boy cleared a block that was causing double vision. This work is simply done through stories.

There is a huge overlap in diagnoses for learning difficulties, e.g. 52% of those with Dyspraxia also have Dyslexia and it is now clear exactly why this happens. If you have a youngster who is no doubt very bright and effected by Dyspraxia do book up an appointment or come to one of my training events. I am including dyspraxia in the expert programme and my health coaching events.

I am speaking at the NLP conference in November on Chronic Fatigue, including how some of the same symptoms are seen in Dyspraxia.

Parents who find themselves exhausted might like to look at www.recoveryourenergy.co.uk. A simple way to learn where your energy is going and how to recover it.

Dyslexia Untied: Great Tips about Learning

This month's great tips from Olive Hickmott

  1. NEVER learn spellings from of a list. Copy them onto postits - just one word per postit. If you learn a whole list from a single page, visual children with store the whole list of words together - may be good for the spelling test but useless for subsequent written work.
  2. Dyslexics normally turn letters around. Has anyone else noticed that 11 upper case letters, turn around and you won't notice the difference - this is nearly half of the alphabet. If you reverse upper case letters they are either the same or don't make another letters. If you reverse lower case, b becomes d, p becomes q etc. None of them turn around and stay the same. This explains to a great extent why some are dyslexic in lower case and not upper case.
  3. Multilingual children can have a nightmare in literacy - they not only have to learn multiple languages but different phonics too. If you visualise you simply see the word in different languages and you can use different colours to distinguish them.

Dyslexia Untied: What does it feel like?

It is difficult to describe the feelings and sensations that swirl around your head and eyes but this YouTube video does well to illustrate the difficulties. More on Dyslexia Untied