A.C. Flory's Blog, page 37

Another win for Innerscape – real surgical robots

This is the Mako Stryker:

https://www.stryker.com/us/en/portfolios/orthopaedics/joint-replacement/mako-robotic-arm-assisted-surgery.html

I just stumbled across the Mayo Stryker in an article about ’12 Medical Miracle Technologies’ on Medium. All twelve will save countless lives, but this one made my heart skip a beat:

https://medium.com/predict/12-medical-miracle-technologies-to-watch-23e9b7b6ec52

Those of you who’ve read the first book of the trilogy – Miira – may remember the scene in which an autonomous AI controlled robot pares Miira’s body back to the bits that still work. The process is overseen by a team of surgeons who never touch the patient at all.

That scene was more or less in its finished version by May, 2015.

I don’t have a crystal ball, nor do I have the kind of expert knowledge that results in a breakthrough like the Mayo Stryker, but I am a problem solver, and it seems that my theoretical, fictional solution was logical enough to become real.

Before I get too fat a head, however, I have to acknowledge how much I get absolutely wrong, starting with the speed of development. I think a great many of these logical solutions will become reality decades before I thought they would. Ah well… I’ll take my wins where I find them.

cheers,
Meeks

Do you re-read old favourites?

My thanks to Audrey Driscoll for her post about re-reading The Lord of the Rings and the magnificent song that went with it:

I have re-read The Lord of the Rings, about three times. I’ve also re-read the entire Dune series about eight times and the Death Gate cycle at least three times, the most recent being just a couple of years ago. But… I’ve never re-read any of the books on my Kindle.

Is that because there are so many new books available to read?

In her hugely successful blog posts about the TBR [To Be Read] list, D. Wallace Peach brought a touch of humour to the phenomenon of buying and downloading hundreds of books that people never end up reading. I didn’t contribute because I don’t actually have a TBR. I’m a voracious reader and get seriously anxious if I don’t have something new lined up to read, but now I have to wonder: why does my reading have to be ‘new’? Why don’t I re-read any of the books on my Kindle when I do re-read at least some of my paperbacks?

I know the answer doesn’t lie in the quality of books on my Kindle; a lot of them are as good as The Lord of the Rings, Dune, or any of my other favourite paperbacks. The answer can’t be readability either because my eyesight is not great any more so paperbacks are actually harder for me to read. So what is it?

I have no answers on this one so I’ll throw the question out to all of you:

Do you re-read books and if so, are they print books or ebooks?

Puzzled,
Meeks

From my phone… Update

We’re back! I have no idea what happened or why, but we haz internet again. -dance- Night night.

We lost our NBN last night and have no idea when it will be restored. As a result I have finally had to use my phone to communicate…and I hate it. I feel as if I’m chiselling a message in stone. Anyway I’m alive and well and will post properly as soon as the internet is back. Hugs, Meeks.

From my phone… 😣

We lost our NBN last night and have no idea when it will be restored. As a result I have finally had to use my phone to communicate…and I hate it. I feel as if I’m chiselling a message in stone. Anyway I’m alive and well and will post properly as soon as the internet is back. Hugs, Meeks.

Wetware

https://www.reddit.com/r/MortalKombat/comments/f3q3zf/nrs_we_need_a_half_robot_face_terminator_skin_in/

In the Terminator movies, the robot played by Arnold Schwarzeneger looks like a human on the outside thanks to artificial flesh – i.e. skin and muscle. Well now the researchers at Freiburg University have made an all-protein muscle:

‘For the new study, researchers at the University of Freiburg created artificial muscles that are entirely “bio-based.” They’re made of elastin, a natural protein that gives tissues like skin and blood vessels their elasticity.’

https://newatlas.com/robotics/artificial-muscles-human-proteins/?utm_source=New+Atlas+Subscribers&utm_campaign=c5257d2ee4-EMAIL_CAMPAIGN_2022_02_01_11_50&utm_medium=email&utm_term=0_65b67362bd-c5257d2ee4-92416841

But wait…there’s more. The new, artificial muscle can respond to certain kinds of stimuli which means it can react to the outside world. This is huge, not just for robotics but for all sorts of prosthetics and implants.

And then there’s the development of artificial nerves.

‘Sensory nerves carry information from the outside world to our spinal cord and brain. In particular, our ability to perceive touch sensation is achieved by a type of sensory nerve ending called mechanoreceptors which are located in our skin. When pressure is applied to the skin, the mechanoreceptors respond by changing their electric voltage (i.e., a measure of electrical energy). The voltages from multiple mechanoreceptors are combined and transmitted to a single neuron, or nerve cell. At a certain voltage threshold, the neuron generates repetitive electrical pulses that are forwarded to other neurons via junctions called synapses, eventually reaching the neurons in the brain to register the touch sensation. The frequency at which the electric pulses are generated (measured in hertz, i.e., number per second) is determined by the applied pressure. Higher pressures produce electrical pulses at higher frequencies, while lower pressures produce lower frequency pulses (Figure 1). These electrical pulses are eventually transmitted to and processed by the brain to feel the pressure of the external stimulus, according to the pulse frequencies.’

https://sitn.hms.harvard.edu/flash/2018/artificial-nerves/

If we could make artificial skin and muscle, and then give that skin artificial nerve endings, we could create robots capable of ‘feeling’.

‘Artificial sensory nerves are at a very early stage in their development… To mimic its biological counterpart, the artificial sensory nerve is constructed using three components: resistive pressure sensors, ring oscillators, and a synaptic transistor, corresponding to the biological mechanoreceptors, neurons, and synapses, respectively (Figure 2).’

https://sitn.hms.harvard.edu/flash/2018/artificial-nerves/

Why am I so interested in these developments? Because there are all sorts of stories in the world of Innerscape, including that of Jaimie and Ari. Jaimie is on the ‘inside’. Ari is on the ‘outside’. They can never really be together unless Ari gets very sick and is inducted into Innerscape, not a fate either of them would wish for.

But what if Jaimie could somehow project himself outside? If he could invent a robot capable of ‘feeling’, he could ride the robot in the outside world but ‘feel’ what the robot feels via the Innerscape AI. It would be like the reverse of the gaming suits and biofluid that outsiders use to temporarily project themselves inside Innerscape.

I’ve been thinking about the possibilities for some time, but couldn’t see how I could make it happen, not without making it all up. Now I won’t have to.

I know you guys aren’t really interested in my tech posts but…I don’t write them for you. I actually write them for myself so I can find important information months or even years after I originally discover it.

Thanks for putting up with my idiosyncrasies.

Meeks

How do you measure success in a pandemic?

I’m writing this as someone who lives in the most locked down city on Earth – Melbourne. We suffered through the first wave of Covid-19 and lost 820 people to the virus, but that death toll could have been much, much worse; during the first wave in Italy, 35,142(1) Italians lost their lives.

Returning to the first wave of Covid-19 in Melbourne, we eliminated the virus and kept it from spreading to the rest of Victoria and the other states by putting ourselves into a VERY strict lockdown. That lockdown included a curfew and a ‘cordon sanitaire’ around Melbourne. It worked. In fact, the same restrictions continued to eliminate the virus from Victoria until NSW, with the tacit approval of the Federal government, decided that we all had to ‘live with Covid’. Thanks to our long border with NSW, we could no longer keep the virus out.

The other States and territories – Queensland, South Australia, Western Australia, Tasmania, Northern Territory and the ACT – continued to keep Delta out until Omicron came along. Western Australia is now the only state still trying to keep Omicron out. Across the ditch, our New Zealand cousins have not given up the fight against Covid-19 either. The battle may have changed from elimination to a fighting retreat, but it continues. The battle also continues in many of the countries of Asia, but we hear so very little about them.

I created the following spreadsheet from data published by https://www.worldometers.info/coronavirus/#countries The website provides covid-19 related information about every nation on Earth.

That’s a lot of data and the forest tends to get lost in the trees so I created a subset(2) of the data to show the difference between the Asian approach to Covid-19 and that of most Western countries. I’ve included Australia and New Zealand as part of Asia, because that is what we are.

In the screenshot below, the data is sorted by total deaths:

Iceland did the best with just 46 deaths while the USA did the worst with 904,038 deaths, but Iceland has a very small population while the USA has a very large one. In the next screenshot, I sorted the data according to deaths per million in order to account for differences in population size:

Iceland appears on the top of the list, again, because something is screwy with the ‘per million’ figure. I suspect a human error resulted in the decimal point being left off, but I’m too lazy to look up the population of Iceland to be sure.

Setting Iceland aside, the data suddenly reveals two surprises:

China does the best with just 3 deaths per million. [Remember that China has a population of roughly 1.4 billion people]Hungary does the worst with 4,285 deaths per million.

Hungary is the country of my birth. It’s a small country with a small population [roughly 9.6 million]. That population is now smaller by 41,229 people. I’m glad my parents are no longer alive to see what has happened to their country. That said, the USA and the UK have the dubious honour of having the second and third worst results after Hungary.

So how do you measure success in a pandemic? Is it money saved? Or lives?

In a recent video, Dr John expressed disbelief that China would continue to eliminate the virus ‘in the age of Omicron’. In the comments, all sorts of theories were raised, most denigrating China’s strategy as futile, draconian and only possible in such a tightly regulated nation. The unspoken assumption was that no sane person would want to live like that.

I’m not an apologist for China because I don’t think it needs one. Yes, the Chinese government probably is guilty of human rights violations, but people in glass houses shouldn’t throw stones. The murder of George Floyd in the US brought the plight of Black America into sharp focus. When police feel they can kill Black Americans without fear of consequences, that’s a human rights violation. When children can be murdered at school because there is no gun control, that’s a human rights violation.

Here in Australia, the media shone a spotlight on our asylum seekers recently, but only because a famous tennis star was locked up with them for a very short time. What we’ve done to asylum seekers in the name of ‘stopping the boats’ is also a human rights violation. Would they be treated the same way if they were white and came from a European country?

But our human rights violations aren’t restricted to asylum seekers. The ‘deaths in custody’ of hundreds of First Nations Australians doesn’t rate a mention unless there’s some political twist to the story. That’s an ongoing human rights violation, yet no one wants to haul Australia off before the Court of International Justice in The Hague. Is it because we belong to ‘us’ and everyone else is ‘them’?

I’m sure China’s strategy of elimination isn’t motivated by pure altruism, but I suspect the Chinese government has worked out that its economy depends on the health of the populace. Dead people can’t manufacture anything. Dead people can’t buy anything either. Maybe that’s a lesson all neo-liberal governments need to learn.

Vaccines are great but they’re not a silver bullet that will save us from the inconvenience of old fashioned contagion control. To save lives, we have to have both. To save our economies, we have to save lives first.

Meeks

(1) Finding the number of total deaths in the first wave [for Italy] was surprisingly hard, or perhaps I didn’t search for the right terms. In the end, I had to calculate the number of death [for Italy] from a graph put out by the WHO:

https://covid19.who.int/region/euro/country/it

If you go to that graph and hover your mouse over each column, you can see the total deaths for that period. I copied the raw numbers into the spreadsheet below so I could get a total just for the first wave in Italy:

(2) The data I used for the comparison between Asian and Western Covid-19 results is detailed below:

Ballet as you’ve never seen it!

My thanks to My OBT who posted about this incredible duo and introduced me to their unique synthesis of ballet, acrobatics, music and the glorious shapes that two bodies can make. Think of a moving work of art, or multiple works of art all telling a single story.

There are some truly fantastic video’s showcasing the work of AcroDuoBallet, but this is my favourite:

Click here to be taken to their Youtube channel, but be warned, you may not leave for a while, a long, long while…

-Meeka-acting-like-a-stunned-mullet-

Why did I ever think this would be easy?

It took me an age to get the musculature of the Vokh right, but once it was done I assumed that slapping on some wings would be easy. Har de har har….

When working with Corel, I create one half of everything then copy-flip it to the other side. As a result, this image is only half finished. I was going to complete it, but then I realised it was an effective way of showing the muscles themselves instead of just the suggestion of muscles beneath the skin of the wings.

Anyway, I’ve been sweating blood over the damn wings since the Offspring – a real artist – pointed out that this fudge didn’t work:

I had to admit that the Offspring was right, but it left me in a quandary because I couldn’t work out how to do it properly. Then I found this picture of a bat:

Turning the reference pic of the bat upside down gave me an idea of how the skin would ‘pull’, but I forgot that the lighting was upside down too. -facepalm-

To cut a long story short, I have done little else but obsess about this pic for days. Now, at last, I can breathe a sigh of relief and relax, at least until tomorrow.

cheers,
Meeks

We haz apples!

I couldn’t resist showing you the alpaca-possum-bird-proof enclosure the Offspring and I built for the apple tree:

This poor little tree almost died a couple of years ago…now look at it, 3 different grafted apples, all fruiting like crazy. We also have 4 different kinds of peaches, a quince tree and a couple of fejoia that look as if they’re going to have a bumper crop too.

If you want to see more luscious photos of home grown produce, check out my friend Dale’s post. She and her partner live in NSW where the weather is more tropical. She also has a green thumb, and it shows.

cheers,
Meeks

The Weeknd

And no, that title is not a typo. ‘The Weeknd’ is the name of a Canadian singer I just discovered thanks to the Offspring. Part singer, part actor, part philosopher, this young man really knows how to tell a story:

But while the writer in me loves the concept behind ‘Gasoline’ – the reverse of Eudaimon, if you will – ‘Call Out My Name’ is the music that engages my emotions at a visceral level. Damn he can sing!

cheers,
Meeks