Thursday, February 13, 2025

Installing Window Managers

Installing Window Managers

It is easy.

 Synaptic Package Manger is necessary.

With root permission type Window Manager.

From Blackbox to Fluxbox to Cinnamon, KDE to Plasma to XFCE  to MATE are available

Except MATE, Xmonad and compiz, I installed all.

Enlightenment data is heaviest and needed 401 MB for DATA.

Enjoy the freedom

e GPU Build UP Dock

Old M.2 Adaptor
Connects M.2. SSD or mSSD
NVMe Drive is new small form factor Hard Disk coming in with new mini PC.
My NUC has a port for 2.5" SATA disks.
I have collected several SSDs over time and I wish not through them away.

When Linux 13 kernel come which is going to support these hardware, I might consider buying a new NUC.
Possibly ACMagic
Morfine
GHTech
Or any other model which fits my Budget.
Until then I am a YouTube Educator.

It needs M.2 adaptor with a OCulink port for internal/external expandion.


1. OCulink Board
PCIe slot
OCulink port
150;watts
No cooling necessary 
This dock or board has a on off switch,too.



PCIe 3
TB3
TB4
USB4
No OCulink
40bits per second 


PCI 4
OCulink 
63bits per second 
24 pins ATX 
Pico Power supply
Pic power supply has ports for SATA disks.

M.2 to OCulink adaptor is avaible.

2. Fix the power adaptor to 24 ATX pins.

3. Fix the GPU to the Oculink Board.

4. Fix 4 ruuber plugs to the base

5. You are in for connecting to a Mini PC or a Laptop

Modernization and Loss of Biodiversity

 July 10, 2011
Modernization and Loss of Biodiversity
In the city and the villages that surrounded it where I grew up,  almost anything that one throws away grows (Plants and Seeds) on its own provided they did not rot away due to too much water.

There was no need to water plants and like a clockwise fashion rain did come in 10 to 14 day cycles even in the dry season.

Inter-monsoon rain was regular and now I understand and believe that the vegetation itself fashion this rain and its cycles.

More trees mean more regular  inter-monsoon rain.
Less trees means less rain, for sure, inter-monsoon period.
I lived for short period in Kurunegala and we moved there since doctors advised my father to move out to reduce the recurrence of wheezy episodes I had in Kandy, when I very young.
I moved back and never had any problems and the problems were probably, related to growing up and poor nutrition, I ponder now.

That is just to restate the damply state of affairs of my city, of yesteryear.

Even Kurunegala the weather, then, when compared to as it is now with lot of vegetation and coconut trees was very mild with more frequent dry spells than in Kandy.

Now we are going through perennial failure of rain and even the rain fails in the upcountry regions where the most of the hydroelectric  power plants are located.

All these are related to modernization and clearing up of scanty vegetation for what we call development
. 
It is going to get worse and there is no master plan to arrest it except adding more vulnerable projects including coal power plants.

Coal Power Plants will cause irreversible damage to our eco-system and by the time it is recorded by scientific pundits, I would have been long gone (Dead wood sitting on a cremation site) but I hope somebody will trace back to year 2005 where I started voicing this on a regular basis in the web.

It would have been earlier had it not been for the slow pace of development of the Web but the slow pace of the printed paper of course accelerated my efforts.

Now I have made it a pastime and I study what I call the “my sphere of activity” (very limited indeed, indeed) and its observation and I want everybody who is versed in biology (or not) would contribute to this type of observations and record them since
we cannot believe the government and will never make any worthwhile consideration (except pass legislation they, themselves violate with political patronage with impunity) to this effort since politicians and their stooges won’t understand their policy impact on mother nature.

Like the mess we have inherited with cricket after 1996 and filling up an ancient tank and building a cricket ground on it is the classic example of the idiocy of our policy makers cricket or otherwise.

We are set for power cuts in spite of thermal power added to the system
.

Now if I do not water the plants including water plants they will dry up and wilt away in as short as three days.

Unfortunately there is nobody to help me with a little background knowledge in biology to look after my plants.
If I go out for a short holiday for two weeks abroad, all the plants I have collected over the period of a decade will be no more.
I was late in using my power of observation since when we were young we did not have to worry about plants wilting away.
The observation period is over 25 years.
This started rapidly from 1975 when plantation section was nationalized.
Everything, I observe is in the direction of loss of bio-diversity.
The little exotic (
I have lost all the orchids) plants I have now if I do not replant will be lost, if not in the wild, but in my garden which is very very tiny.
Lot in my neighbourhood has changed and except for the remaining jack-tree and the breadfruit tree (which is gradually dying) which stand tall, all the other trees have been felled by the owners and all the tree shade/s we have now is / are less than 20 years old.
Glad to say I have contributed to many of the remaining ones with a few exotic palm trees in that lot.
None of them were for commercial value but for shear beauty of their presence in my garden.
Now I have to make a significant observation and this writing was prompted by need to emphasize that.
We live in a small hill (in the middle) not very steep but the road now we use is where the waste water ran down and I believe there was a little stream trickling (probably during the heavy rainy season) down and the underground water table is very near the surface with solid rocks on top and we were without pipe born water and we had to dig a well for our daily use.
It took another 10 years to get the pipe born water and with my friends who were engineers (they worked hard) were instrumental in the
Nilambe Project from which present politicians in the city steal water when they come for a respite from Colombo.
Particular president made sure he gave connections only to his partisans (he is no more) and I had to wait till he died for everybody in the area to get a regular water supply and that was the only time we had a President from the hill country.
 
Now what they do is surreptitiously divert our water to Kandy and elsewhere and depriving us at times of greater need.

Suffice is to say they never started a new scheme for a very long period of time.
 
There was a natural shallow well at our level which we used liberally during the construction of the house and I used to take a bath on some days for pleasure.
There were plenty of fresh water crabs there (they are gone now) and I had saved couple of big crabs who landed on our low roof to safety who had escaped on flight from birds of prey.
You should not believe that the crabs could fly on to my roof. 
Way our politicians travel by air I have to believe even frogs and crabs would learn to fly if they happen to be partisan with politicians, with or without wings.
The whole place is dry now in spite of ancient minor stream long long time ago.
We came to this area when water was becoming scarce but there was still some underground water, left.
 
Now to my point and re-directing my thoughts and the reason why I came this far.
1. I said I live in the middle.
2. The road was once where there would have been a minor stream, now totally dry.
3. Unlike those days which I drove a car (disposed it when I discovered it was consuming lot of petrol), I walk up the road for my exercise which is my workout and the day I cannot walk up the road, I would retire from this world for good and
do not need a bypass or a borrowed organ or two to live
. 
As a living destitute.

4. Unlike those days (it was a brisk walk,then) now I take my time to watch the flora and fauna (now dogs and cats only and a few birds).
 
5. I one day notice the flowers of the seeds I tried to grow in my plot but could not on the wayside at the beginning which is the ground zero level.
 
5. Seeds that I used to get sometimes from abroad are germinating in not my plot of land but in the plot of land at the bottom.
 
6. All the seed I put at the middle level could have got washed away and settle at the lowest level.
 
7. Strangest of my observations was a white flower (I got the seeds from botanical garden and tried to grow in our plot but never succeeded). 
Very pleasant surprise and the owners had left to Canada over 20 years ago and that house is still empty and once in 5 years somebody cleans it up and there was no way the cleaner (not a gardener) had planted it.
Few of them are still there.
 
8. Same day I went to the botanical garden from where I got the seeds (from the hanging runners coming over the fence). 
To my horror those runners have all gone, no flowers and dried up stems were seen in a tall tree.

I think I did some honours to the Botanical garden for picking few seeds (which I never was able to see  flowering in my garden) and spread in my garden which had got washed away and landed on a foreign soil where nobody was living now.
 
9. The sense of Sympathetic joy (Upekka) was overwhelming and that is why I have to pen it down here.

10. I now remember, just couple of meters away there was an exotic plant and on a rainy day dug up the yams and I now have an enormous collection (personal favorite) of it in my rooftop garden. They guy who brought me the specimen is dead. He became an alcoholic.
 
This Sunday when I walk up I will be picking up some seeds from that flower and then try again to germinate them, and perhaps I might even donate it to the botanical garden chief (previous one was a good friend of mine and I never asked him for any exotic plants except those on sale.
The present one when I met, I suggested  he should start selling water plants -which has become a monopoly of a selected few- and I am glad to say he has obliged and there are a few new guys doing water plants in Kandy, now.
I should now go for cuppa tea and wind up after stating from whom I learned the secret of throwing seeds all over the foot path (by accident) where I walk, now, though ambling.
 
It was my wife’s grandma.
 
She had the habit of spreading the seeds all over the garden and I used to pull most of them out to get some order in the garden. She was a sweet lady and she needed flowers for her daily offering to Buddha and we had at least 5 varieties almost everyday.
Now she and her daughter and my mother all gone we cannot pluck two varieties on a single day.

Strangely enough my rooftop garden has three to six including three varieties of Jasmine
which I grow (a trick I learned from my mother) in the memory of my mother who died well past 90 (and the other two ladies too, I fondly remember when I see these flowers).
 
I wish I should not live that long since then there won’t be any birds or wild flowers to smell in this blessed island.

But as long as I could walk up the footpath (any footpath, for that matter), I am going to pluck dry flowers and spread the seeds like birds do.
I don’t care where they start germinating and like a good Buddhist I have to lose attachment to any worldly thing including flowers from now onward.
In this scenario I differ slightly from Buddhist virtues.
I want our great great grandchildren to have a reminder of the old times not of my photographs but some beautiful and fragrant flowers which we are losing by the day.
We do not have bees and the the little innocent black variety which were there for over 20 years and they come collect honey from my tiny water plants.
20 years ago, there was a seed I tried to germinate by various mean but never could.
Then one day I asked the lab assistant who was a keen gardener and my patient till he died when nearing 90 told me that the seeds crack when there is intense heat and then when the rain comes it germinate and if I soak the seeds it will rot.
Just today, I picked up three of those plants to pot before they are run by the three wheeler drivers. 
The road is now finished with concrete to lure the voters get heated up and the seeds on either side crack and germinate. 
They planted a photo of Ranil at the bottom.
Suffice it to say all the seeds coming from a plants / trees my mother in law planted.
When a generation take the exit pathway like in America we will have only commercial growers and mono-culture.

Blessing in Disguise-Linux Games

 February 26, 2011
Blessing in Disguise-Linux Games
I have avoided using games as a plus point or a weakness of Linux.
 
You may wonder why?

Whether we like it or not games are essential for life.

Too much of any game or demanding sports may break a marriage.

Similarly lack of games can terminate a marriage.

So when, I talk about games, I always start with that advantage point which is neutral to begin with.

We tend to associate games with children and young adults and as a growing up process.

But I would like to disagree.

Even animals love games as young ones and they start playing with the mum and the litter and not only that process teaches them cooperation and learning to avoid dangers when the leave the adults as solitary animals.

Dogs digs the earth when they are bored.

For them this process is essential and leaving some stuff dug up and some hidden material and getting the dog to discover the bones is a standard game.

That takes the boredom out of their system.

The very same pattern of boredom sets into adults if we do not occupy with some gaming activity.

The Cricket World Cup is now in full swing and every body who is somebody is now slowly making their entry into the fray.

If you cannot play at least watch the game.

It is good for your health, if you are not gambling with the outcome of the game.

Regarding Linux of course one of the weak points as I saw in the early stages was its lack of games. 
For me who had by that time almost addicted to DOS and Windows was a blessing in disguise.

That made me to delve deep into Linux and I am now almost daily writing something or teaching somebody its virtues or doing some activity with Linux (in Dropbox) and 24 hours of the day is not enough for me.

Similarly, if one is introducing computer science to a young one not having games is an advantage. 
 
So the child can concentrate on learning nitty gritty points of computing.

In the same tone in very young child, the games can be a vehicle for introducing learning techniques.

What is important is that the games should be age appropriate and should be of short duration and easy to perform.

There are lot of little games in Linux but there is paucity of very advanced games.

The context is so bad I bought a book that dealt with Linux games thinking one day when I have time I will start making an attempt to produce at least some elementary games for kids. I still have the book but misplaced its DVD (was a blessing) and never made a game in my adult life.

Mind you making games for very young kids is difficult. 
 
Their attention span is short unlike the bigger children. 
In the bigger children their attention span is so intense and they get absorbed so much gradually game becomes an addition.

I have a very simple solution for that.

When we played it was a habit that the entire extended family get involved in the game and the computer games that we played were of the group category. 
We used to take turns, those watching will help with the clues.

Most of the Waltz Disney games come under this category.

Tarzan, Lion King and Zero to Hero were a few of them and gradually migrated to Italian Job, Raider of the Lost Ark and Indiana Jones.

Mind you all of them were Windows based and none of that intensity was found in Linux.

Then I discovered
Tux Racer, Pinguy and a few others in Linux.

There are big Linux game packs.

I have not seen a single yet.

It takes at least two weeks to download them. 
When I have finished addressing the Linux 100 and Linux Extras, I may consider downloading.

I have eventually decided to download the big game pack even if it takes a month to do so.

Or else if I happen to go abroad I will keep two days for that activity.

I have tried few friends outside.

Unfortunately the are not versed with Linux.

Ten (10) plus nuances that annoys the desktop user

 February 25, 2011
Ten (10) plus nuances that annoys the desktop user 
Mind you, Developers have done a wonderful things during the past 15 years.
 
From its origin Linux was developed by developers for the developers.

Its architecture and file hierarchy is archaic and resistant to change.

I have been using it long enough, it is stable, robust and I do not need to worry about it except running it 24 /7 schedule in spite of electricity bills going up to get its maximum. 
Since I am doing regular download of Linux distributions for testing (a hobby of some sort) this rigmarole is OK. 
 
All the CRON jobs are (regular maintenance) done for me and I do not need to worry about configuring it to suit my needs.

Since I am not a Server Master but only a Desktops User (perhaps as workstation) how the developer can figure out what I do with my computer in the 24 hour schedule is something, I ponder.

I would like the computer to be my slave rather than it masters things for me.

1.That is one of the weaknesses. 
Linux is a work horse but my horse is very finicky in its behaviour what he eats and what schedule he follows.
He follows the developers schedule and not my finicky behaviour schedule. One can say in that case you configure it yourself. That is a good argument but with file architecture being streamlined, rigid and resistant to change, one cannot change a cabinet and put it in an less obtrusive place for me. 
If I do that whole file system crashes and even with the root permission. When the system boots next time it goes back to its preferred protocol.

I need to know like a developer every bit of file structure and of scheduling (Deamons) routine. I love to do that but I am a professional in another field not computer field. 
My field needs and structures are completely different form automatic response of a computer.

2. My needs are customer based. 
That is the second nuance. The file hierarchy and resources are good for a Server but not an ordinary human being like me.
I do not want to go to the loo, exactly at the same time and same place and void exact amount of void. 
In other words I need some personality to my voiding or consumption habits that vary from day to day.

Not the way the developer voids and eats.

The file hierarchy is stable and is not customizable.

3. The sames goes with programs. 
I cannot change a system program and go for a more flexible program. 
In that case I have to go for a different distribution or for a different desktop (Gnome or KDE or LXDE).

I cannot interchange desktop experience. 
It can be done by installing Gnome and KDE versions in the same computer separately but one can use only one session at a time. They do not speak to each others library systems and GTKs are different. 
That is the third.

4. The real disadvantage is the package management system. 
One has to be satisfied with one grand package version and and cannot go back to old or new one without radical change to the system and install procedure. 
One has to wait for the rolling system or to a new radically changed system. 
For example I have been using Redhat for years (not really I cut my teeth with it and changed with Fedora evolution and migrated to PCLinux) and the company changes its protocol from Fedora 13 to 14 with sea of changes (like Microsoft) and file formats. 
The other distributions resident in the same computer cannot mount them or effect changes to the files in the home partitions. 
This is ridiculous change for the user who had being doing something as a routine is changed without his feed back.

It is a corporate decision not a community decision or request.  
Now I shun both Suse and Redhat.

I am not resistant to change. 
I am for it but uses are not scape goats or made vulnerable like what Microsoft or Apple does to its customer base.

This is the change that make Microsoft user looking for other avenues like Linux. If Linux distributions also on commercial bent use the same strategy it will certainly misfire.

GoBo Linux had been trying to address this issue by radically changing the file architecture and ability to use old and new in versions (say Open Office and LibreOffice libraries are organized in a structurally different architecture with sharing (common) and not sharing (independent), Java Suite.
This can be done but this distribution has not received the backing of the rest of the community. In fact, I have been waiting for its new release over last three years and it does not seem to be coming. 
It is long overdue.

I hope LibreOffice coming it to its existence they should attempt to reorganize the library system (at archive level and user level) and make innovations.

It is hard work but worth a try.

Then we can have long term (L.T.S) support for 10-15 years instead of the present 3 to 5 years instead.

5. Other nuance is the release cycles. 
It is at its extreme from months to years to decades. 
There is no agreed protocol (Debian / Gnome has taken this head on and it is stable and reliable) and they have this rolling system, also. 
It is OK for distro-hoppers but not for old people like me. 
I of course hopped distributions, at a regular interval and I have 5 to 8 distributions in my laptop, that does not mean that I use them regularly.

They are for a particular purpose.

I keep GoBo Linux and Yoper because of their original approach and I love their changes and that gives me some opportunity for research material to engage in.

Then I can give perhaps some visionary advice.

GoBo thinks of the file architecture and its rearrangement.

YOPER thinks of truncating file extensions and throughput.

Linux is a visionary approach.

It needs new vision and dimensions for the current century.

Live CDs was a vision (demo to begin with) but now it is a universal approach.

Try it before you use it.

Then speed of booting is another vision.

6. With big hard disk coming we must make not 15 to 60 partition limitations but 1000 or more partitions.

Linux can handle it but Microsoft does not. 
The number of partition a distribution uses (the minimum and the maximum) changes constantly.

7. Hardware compatibility is a major issue. 
This is not due to the fault of Linux. 
It is the manufacturers and vendors ploy to support one particular operating system over the other. 
It is time we should have legislature to regularize this at least in the European Community, if not America and UK.

8. Cloud Computing is taking a corporate stand now with Google taking a bigger bite. 
Linux User must be ready for dual purpose. 
One is browsing, the other is using Linux utilities like Gimp, Sribus, Inkcape and Blender for personal use. 
We must not let these excellent utilities disappear with Cloud Computing.

9. There are over 300 very good distributions and reviewers review only a few and the reviews are also not balanced. 
They do not do it at a research level. 
They do it at the level of blogging not professional to say the least. Gut feeling like in politics and daily papers.

Review means reviews
(pros and cons and neutrals) and not shoddy hasty writing. 
There is professional responsibility attached to this word.

Nothing more nothing less.

10. Last but not least. many distributions do not have a mult-ilanguage capability. 
Only recently Sinhala has two distributions supporting it. 
This is essential for children programs Doudou Linux (french) is attempting it.

Others should follow.

11. The lack of commercial software or similar equivalents applications (Flash, Java) is another handicap.

There are many other minor matters but this is to highlight no operating system is perfect. 
We only have to know the good and the bad and drop all the ugly ones.

The Gadgetmania or a Matter of Choice

 February 20, 2011

The Gadgetmania or a Matter of Choice
There is a Gadget Mania going on unabated in the West.

While in some developing countries having a square meal for a kid is something wanting, the craze for gadgets is evident, as in the West.
It is not the work the gadget does but it is the status symbol that carry with it, that matters.
 
For a fancy iPod or a laptop may costs a lot. 

The money spent can be better utilized to buy some school equipment to help children’s education but again the money somehow get channeled out.
For example money spent on a flashy Apple Macintosh computer could have been converted to about 25 to 30 O.L.P.S. (one laptop per child) but what matters again is the profit per each item sold but not the number of uses or users the item provides.

This is true in the developing world too, unfortunately
.

Following is a summary of gadget mania, I once suffered but somehow I have transmigrated from this phenomenon.

I have gone through this phase of mania in a mild and moderate manner as a young one.

I had to buy the correct brand , when I buy something new, say a camera.

Then when the camera prices came down I had several and I found that if one has a “good camera eye" , it does not matter what camera one uses.
I am still a camera addict not cellphones
.
One can always catch the moment in a snapshot with any makeshift camera if one is prepared.

In came the video camera, the whole ball game has changed.

This was the time I was a bachelor.

The money and choice were not a problem, then
.

Then came the computer.

They were expensive but I had to buy (Commodore 64-128, Amiga, Compaq, Atari) what was available.

When the notebooks of Old Era came I could not afford them.

I thank god for that.

I lost interest in them till Windows came into existence.

We were hooked to it and trapped beyond our control till I discovered Linux and
the meaning of freedom and correct choice.

Then followed the period of transition in my mind along with struggling with money matters. When there are money matters there is no choice left, one has to survive preserving only a few of one’s favorite hobbies that included computers to me.

Common sense, pragmatism and rationalization take precedence over the trends, emotions an attachment.

When the comparatively cheap laptops hit the market, I had to make a choice.

My calculations told me I can have there desktops for the price of one laptop. One for me in office, one at home for me and one for the kids, all assembled to my specification with the hardware available at the time.

Now I have 6 out of 7 old computers all doings (thanks to Linux) some useful function at home.

One computer busted while recording Cricket World Cup in 2007.

The rationalization then was, I don’t have to carry any heavy luggage (laptop) on the move.

Then I bought the first laptop (I needed one to test Linux distributions), ACER of course, one third the price in Singapore without an operating system and booted it with Linux at the airport on my return home.

Another second hand laptop (for testing Linux) and new netbook (for my daughter) were added to my armory without feeling the pinch.

This is my rationalization going berserk.

I carry a cellphone (it is a hindrance to my peace and well being), only when I travel abroad and feel like dropping it into a dustbin in the airport but resisted and gave it to my wife instead.

It boils dow
n to 3 phases, my transmigration.

1. Choice with lot of spare money in hand

2. Pragmatism with barely enough money in hand to survive

3. Rationalization while enjoying all the intellectual freedom that one get with Linux.

If Linux, did not come into existence I would not have known
what I mean by freedom of choice.

Wednesday, February 12, 2025

Nuclear Accidents,Fire Hazards, Electrical Supply and Global Warming

 April 4, 2011

I post this as  a reminder to the guys in the Electricity Board who are all political crooks.

Nuclear Accidents, Fire Hazards, Electrical Supply and Global Warming
 

Please not these mini computers for Gamers are a real fire Hazard without proper coolers.

Now that the Cricket World Cup is over, it is time for me to concentrate on more important issues relevant to safety at home and on the road. 
It is with deep sadness I edit this page that one of my students died and other seriously injured, a motor bike accident. 
 
I always say more people die on the road than the death toll in a tsunami.
 
Before that I would like to make some passing reference to why we lost.

I should pen it down here since our journalist are the worst stooges of the politicians and won’t make the comments I make below as points of reference in their daily chores.
I may become very unpopular but I am not a politicians vying for votes rigged or otherwise.

First reason is that in Ceylon we never were united after the war whereas Indians were all behind the Indian Team and Sachin.
Indian papers were critical but were not destructive.

1. In our case one of the government channels run by political stooges raised a claim that Mahela played to the hands of Pakistan deliberately. 
What I understand now is that this comment was done by players rejected or not selected to the team with political intent.

Of course, Mahela answered the critics with his bat like Ponting and that was the very best of Mahela after his 167 odd runs in his first appearance against India in home soil.

What is important this time is, it is on Indian soil with nobody behind him except his team mates.

2. We were not ready for the world cup and we did not have a regular team up for the finals and poor Sanaga had to fiddle round and use his gut feelings. While playing on the round robin stage he had to select the players in best form from the makeshift team given to him by the selectors. There were only  five or six who were worth the mettle and naming them here is not appropriate and others were filling the numbers from 6 or 15.

3. Then come the crunch game and politicians get activated and like after the war they want to reap benefit at the expense of cricketers and bloat their image while failing in their duties at ground and grass root level.

4. Now come the big political manoeuvre and Randive catapults into World Cup stage and comes home wicketless.

5. I have my praise for Gary Kirsten, graceful South African opener who did all the ground work for the victory after 2008 debacle. 
There were no politicos influencing him. 
Similarly the praise should go to Alan Donald the South African fast baller lifting the New Zealand team up to the Semifinals.

The difference here is everything form ground construction to ground preparation to celebrations have to be sanctioned by politicos or their stooges.

Everything is politicized and corrupt.

6. I feel sorry for army man Ajantha and poor but Big Ball Boy Dilhara who was worse than a political stooge. He was the one who could have taken the wicket of Tandukar in a crunch game. Yes, he might give some extras and few no balls but we did not want him to ball full quota of 10 overs. Three overs form him would have been better than full quota of Randive.

This whole episode destroyed both the big boy Dilhara and new find Randive.

Who is to blame I leave it open.

Lesson from Dhoni is that he took the full responsibility of Srisanth’s selection and he managed him accordingly but did not break his backbone like what we Ceylonese do.
 
We win the war and then break the backbone of soldiers.

That is the way we go up the ladder.

It is cut throat politics, even in sports.

This one for the Indians.

In the built up to the semifinals there is a little consensus among few of the intellectuals that if we win the World Cup, the government will increase the price of petrol and with it all the other commodities and Ceylon should not win.

I also subscribe to this especially as a teaser, something that I enjoy when spirits are high and I was the only one in Ceylon who supported New Zealand on the day. I went on to say to irritate my close friends, if we played on a neutral ground we would lose knowing very well New Zealand would not make it through.

This is like a Ceylonese government officials who vote for the opposition on the day of the election and goes to work on the next day attired in a blue dress and a red or gray tie.

In my case if somebody volunteered money I would have put a bet for Ceylon to win and support New Zealand in front of the TV.

Here money and win matters but usually it is the Santhosum or political bribes that do the job.

In India the commodity prices may not go up but cricket corruption and betting will surge with this win.
 
Even though, I subscribed to the view that petrol will go up in price after New Year and before New year if we win the World Cup as a teaser for my friends, I was of the strong opinion that our politicians are only sensitive to the voter only before and during election, that they are so insensitive they will increase the prices whether we win or lose.
In that context it is better to support our team irrespective of political realities and that is what we should do come finals.
I am of the strong opinion politicians and religious dignitaries should not get involved in sports.
Leave them to sports specialists and the coach and pay them well and on results basis like top CEOs and not to political bum suckers.
And come win or lose be prepared to tighten our belts for another 5 or 10 years and the promised land may never come true with global realities and food prices going up by the minute and production not keeping up with the demand from banis, bananas to political bana.

Safety First
That is almost like a lecture in point form but we never correct our mistakes but the one I am going to write below if you do not take notice one might lose everything including life.

It is the fire hazard that we go through in March to May.
 
There are two factors one is external and other is internal.

External one is global warming and Ceylon included and exaggerated by our Coal Power Plant going into full operation soon.

The other is lightening and fire crackers.

I was happy that we lost the Cricket and if we won the fire crackers would have ignited a few fires burning even our precious forest reserve.

I am the one for banning fire crackers in entirety.

It serves no purpose and many of our dogs die of fear during New year festivals when owners go out on holidays leaving vulnerable dogs to fire crackers and thieves (they poison dogs).

Other one is internal.

That is our Electricity Supply which fluctuate in voltage. 
This risk is increased with thunder that accompany rain.
 
One computer and two voltage stabilizers busted from the month of January to now.

This not the first time and some time ago, I lost almost everything (electrical equipment that included a TV, a tumbler dryer and a washing machine) including 20 odd bulbs in one night and morning due to power surge going above 400. 
My investigation revealed that guys put hooks on the live wire and pilfer electricity and two of them were in contact to raise the voltage to 400 or more.

The has become a perennial problem now. If not fire one can get electrocuted.
The only way I have saved few equipment is by using UPS not voltage stabilizers (two of the Ceylonese voltage stabilizers caught fire and there is no alarm. system). 
At least the UPS has the alarm that goes up and we cannot buy any imported voltage stabilizers in Ceylon, now.

This New Year I decided to work on reducing fire hazard.

1. I have three or four digital thermometers.
One is on top of the computer I am working now. The other is on top of the switched off computer. The temperature difference is 7 degree F and time is mid night.

2. I do not switch on any equipment if the outside temperature is above 88 degree F except the fridge.

3. I use the computer in the night and who is going to go for air conditioning with electricity bill above Rs.6000/=

4. I use UPS. 
Recent ones have better quality internal circuits and integraters.

5. Check all the connectors and replace them with sturdy not cheap ones.

6. Be vigilant and safety first from kitchen to to bed room to living room.

7. No fire crackers.

8. Switch off all the equipment not in use.

9. Emergency lamps with all diodes and keep them charged for an emergency.

10. Keep an eye on the meter and the monthly bill which is going up by the minute.

Pathology at its BEST

My last book is on doctors and their mistakes.

 I will publish it in my death bed so that I won't leave a doctor to administer a lethal dose of sedatives.

As a True Buddhist I need to die in a "Lucid State" with a proper Gathi Nimitta (which I deserve) and having no control  of mine.

Assumption was every illness was related to infection in the pre-antibiotic era. 

Viral infection did not excite inflammation to begin with.

Diagnosis pneumococcal bacterial pneumonia needed specific signs without and X-ray.

Viral pneumonia in infants can be missed unless an X-ray is take at the precise time.

28, 32, 40 ratio was unknown.

28% could be diagnosed without ancillary investigations

32% with the help of investigations.

40% missed by even learned professors.

They end up at the pathologist and the pathologist knows he cannot fill up the 40% in all his life. This was told to me my professor to which I am grateful to this day.

That put me off completely.

This is the list I put in my histology class and nobody could define the word definition.

I use tuberculosis as a model disease which only 5% show symptoms. In 95% the patients it heals by itself leaving a site of calcification which vary from where the bacteria enters the body.

1. Definition, 

2. Incidence, 

3. Etiology,

4. Bacteriology, (applies this only to bacterial infections)

5. Morbid anatomy,

6. Symptoms, 

7. Diagnosis, 

8. Complications, 

9. Prognosis, 

10. Treatment and 

11. Prophylaxis.

Russell LaFayette Cecil (1881-1965).

 Russell LaFayette Cecil (1881-1965)
At the time of his death in 1965, Russell LaFayette Cecil could plausibly be called “the best known American physician in the world”  due to his editorship of his Textbook of Medicine . 
He was born on 13 October 1881 in Nicholsville, Kentucky, son of the Reverend Russell Cecil DD, and Alma Miller Cecil. Cecil’s father became pastor of the Second Presbyterian Church in Richmond, Virginia and his son Russell graduated from Princeton University in 1902 and from the Medical College of Virginia in 1906. Cecil’s Princeton graduation yearbook describes the typical member of his class as male, Presbyterian, Republican, a history major, and a baseball fan . The class’s favorite teacher was Woodrow Wilson who later became President of the United States. Their favorite authors were Scott, Dickens and Thackeray.

Cecil described himself as a 150 pound, 5 feet 10 ½ inches tall, Presbyterian Democrat, whose favorite author was Dickens, favorite study was biology, and favorite sport was tennis. During each of his four years in the class he made the ‘second honors’ group list. His classmates reported their best friends (‘Kid’, ‘Bunt’ and ‘Charlie’ for example), but unlike them, Cecil said his ‘familiarity’ was his mother .

In his class report seven years after graduation (1910) he had the following to say about his life:

The story of my life since leaving Princeton can be told in brief and simple measures. I took up the study of Medicine in the fall of 1902 and pursued it with considerable strenuosity for four years.

Cecil spent the summer of 1906 in Vienna and the winter and summer of 1907 at Johns Hopkins. He then became resident pathologist at Presbyterian Hospital in New York, where he had a junior clinical faculty appointment at Columbia University Medical School from October 1911 to June 1916,  when he joined the faculty at Cornell University Medical School in New York City.

He remarked at the time: “The truth is I have been working too hard during the last seven years to give the matter of matrimony its proper consideration. He’s promising a reform and an early desertion from the ranks of bachelorhood.”. It took him another 13 years to decide to marry Eileen Cumming, a native of Sydney, Australia on Sept. 20, 1923. They had one son, Russell Cumming Cecil, who was born on 6 October 1926  and became an architect in New York.

Cecil joined the US Army on 16 June 1917. He was approached by the Surgeon General to study pneumonia, and carried out two very large trials of vaccination. He was creative in conducting these trials in difficult circumstances, beyond his control, including one of history’s greatest wars and pandemics. Cecil left the Army on 30 September 1919 as a Major, and returned to the faculty of Cornell Medical School (where he became a full professor in 1933 and became Emeritus Professor in 1950).

Cecil’s experience with large controlled vaccine trials in the army was relevant when he became a visiting physician at Belleview Hospital, New York, between 1921 to 1932. He took advantage of the great size of this hospital to pioneer the development and implementation of controlled trials. Cecil was also one of the first physicians in the United States to decide that rheumatic disease would be his area of special interest. In 1922, he opened one of America’s first arthritis clinics, based at the Cornell Medical Center,  and his interest in arthritis and rheumatism became central in the second half of his life (he was a founder of the American Rheumatism Association and its president from 1937 to 1938, and founder of the Arthritis and Rheumatism Foundation, and its medical director from 1954 to 1958).

Cecil was elected to the Inter-urban Clinical Club in 1923.  This group, founded by Sir William Osler, consisted of a small group of America’s elite clinical medicine researchers. This can be seen as a clear indication of respect by the leaders of academic internal medicine. By 1928, he had received an honorary doctorate of science from the Medical College of Virginia.

In the 1920’s Cecil found himself still using Sir William Osler’s monumental Principles and Practice of Medicine.   Although this had been revised in 1919, it was becoming dated . Osler may have been the last physician who could hope to cover all of internal medicine by himself. Cecil’s response to the challenge presented by the new era of medical specialization was brilliant in its simplicity. He invited 130 experts to write chapters covering their fields
for the textbook he edited. Reviewing the first edition of Cecil’s textbook, it is clear that there is a strong editorial hand at work. Most of the hundreds of entries about an illness or health condition are organized in a similar way with sections titled:  
Definition, Incidence, Etiology, Bacteriology, Morbid anatomy, Symptoms, Diagnosis, Complications, Prognosis, Treatment and Prophylaxis. 
 
At the time of his death the 12th edition was in preparation, and the 22nd edition was published in 2004. Cecil’s textbook seems likely to last until it is succeeded by an on-line Wikipedia for internal medicine, which can be revised constantly and is not limited by the economics of the printed page.

After practicing medicine for over 50 years and receiving the American Medical Association’s Distinguished Service Award in 1962, Cecil died on 1 June 1965 at the age of 83, in New York City. He had many interests outside medicine, including Greek classicism, golf, poetry, painting, sailing, walking and swimming. He was described as an “urbane and witty man” with an uncanny ability to note the strengths in others that stood him in good stead in his work . His wife said of him, “He is impatient with stupidity, unforgiving of unreliability and deeply resentful of careless medical practice.” .

Dr. Robert F. Loeb (1895-1973)

 Dr. Robert F. Loeb (1895-1973)
 A common phrase heard at many medical centers is “Days of the Giants”, referring to an earlier era in which legendary physicians supposedly strolled the wards. In its most common usage, the term implies that these earlier doctors were somehow superior, either due to their dedication, knowledge, or teaching skills. For decades, medical school alumni magazines have promoted this idea by publishing laudatory feature stories and obituaries about past professors. These articles provide fond memories for alumni and reflect on past accomplishments by the institutions in question.  
As time marches on, virtues are recalled and blemishes forgotten. 
Lately, however, alumni publications have begun to publish pieces that recount darker episodes in the history of medical centers and that even criticism renowned physicians.
The study of medical history is inextricably intertwined with the reverence of earlier physicians. The first historians of medicine were themselves doctors, often retired, who decided to document past medical achievements, many of which they themselves had witnessed. Characteristic of these works was the assumption that as each new generation of physicians marched forward, they stood on the shoulders of the previous one. Among the best known of such works is the Pulitzer Prize-winning 1925 biography of the acclaimed early 20th-century physician William Osler by his former trainee and colleague Harvey W Cushing, himself a renowned neurosurgeon. Occasional scholars, most notably Swiss-born physician-historian Henry E Sigerist, bucked this trend, studying both “great men” as well as the economics and politics of medicine, but it was not until the rise of social history in the 1970s that equating historical progress with the achievements of great doctors was formally challenged. These social historians not only situated medical history in a social and cultural context, but often criticized past physicians as having been autocratic, sexist, and racist.
For the most part, medical school alumni magazines have been immune from this historiographical trend. But over the past several years, this has begun to change. For example, in 2004, Dartmouth Medicine published an article on a 1966 episode in which eleven Dartmouth professors resigned in protest of organizational decisions made by an “authoritarian” dean, Gilbert Mudge. 2 years later, Yale Medicine ran a piece on Cushing, whose family was donating his collection of brain specimens to Yale, stating that many of the revered neurosurgeon's contemporaries saw him as “an egotistical, hard-driving, selfish, mean son-of-a-bitch”. Nevertheless, it was surprising when, in 2007, the P&S Journal (now Columbia Medicine, the alumni magazine of the Columbia College of Physicians and Surgeons), began to publish a series of frank assessments of the career of Robert F Loeb, a legendary physician and professor who was the chairman of Columbia's Department of Medicine from 1947 to 1960. Not only are there physicians still at Columbia who worked directly with Loeb but his son, John, remains on the faculty. The writers—largely alumni—have fiercely debated Loeb's legacy, terming him, among other things, “abusive” and “scornful”. What lessons can be learned by revisiting the past in such a provocative and honest manner?
Loeb was born into a medical family. His father was German-born Jacques Loeb, a world-renowned physiologist and a founding member of the Rockefeller Institute for Medical Research. After completing medical school at Harvard and training in internal medicine at the Massachusetts General Hospital and Johns Hopkins Hospital, Loeb moved to Columbia-Presbyterian Medical Center, where he would spend 37 years until becoming an emeritus professor in 1960. In his early years at Columbia, Loeb spent much time in the laboratory, where his seminal studies of Addison's disease clarified how the adrenal gland and kidney maintained electrolyte balance in the body. With enormous ramifications for diabetes mellitus and many other diseases, Loeb's research, many believed, warranted a Nobel Prize. Meanwhile, Loeb climbed the academic ladder at Columbia, becoming the Bard Professor and Chairman of Medicine in 1947. He was often the first physician to arrive in the morning and spent many weekends on the wards, expanding his encyclopedic knowledge of medicine, mentoring house officers and students, and paying extra visits to ward patients he had met during rounds. Loeb was for years the co-editor of the Cecil-Loeb Textbook of Medicine, the bible to generations of internists. In addition, Loeb had an uncanny ability to remember patients he had not seen in many years. In one case, he not only remembered a 35-year-old woman he had treated 25 years before when she was a child, but what bed she had been in and who her residents were. One former student called Loeb the “mentor of mentors” and credited him with his own “life-long dedication to scholarship and the pursuit of knowledge”. With this sort of biography, how could Loeb's legacy become so tarnished?
The critical assessments in the P&S Journal began with a remembrance by Clifton K Meador, who had trained with Loeb and had written a book on famous physicians. Meador painted a complicated picture of Loeb, describing how the senior physician had first effusively praised him for making a diagnosis of Budd-Chiari syndrome but then unfairly turned on him for failing to examine a diabetic patient expeditiously. Meador also described how he later redeemed himself by preventing unnecessary surgery in another patient, but his image of Loeb as arbitrary and judgmental nevertheless persisted. Meador's article inspired other negative recollections by former Columbia medical students and residents who recalled having been put on the spot when making rounds with Loeb on the wards. For example, Alex Caemmerer, Jr, wrote that Loeb had taught by “humiliation and intimidation”, treating students as “the lowest of the low”. When Ollie Cobb suggested that a patient might have Rocky Mountain spotted fever, Loeb responded with a booming “Fiddle-De-Dee”, the phrase he used when a reply did not meet his standards. David Marshall recounted a story in which Loeb told a student who had missed a question to “go down and see the dean and tell him you are through at P&S”. Although Loeb quickly called the student back, the event was nonetheless disturbing. This type of behaviour, Norman Spencer wrote, showed Loeb's “very public and destructive personality failure”. Another anecdote came from Lawrence W Norton, who wrote an article commemorating the 50th anniversary of Loeb's retirement. Although Norton's patient, who had lung disease, felt perfectly fine and had been diagnosed by chance, Loeb repeatedly demanded that Norton describe the patient's symptoms. This interchange apparently infuriated the patient, who barked at Loeb to “leave my doctor alone, you old man!”

What can we learn from this discussion of Loeb's faults? 
 
For one thing, such dialogue can produce a more honest assessment of past medical practice and education. As Dana C Grossman, former editor of Dartmouth Medicine, wrote: “There is surely no P&S alum of the Loeb era who didn't know both sides of his character.” 
Such candour thus avoids whitewashing the past. 
But more importantly, Loeb's story reminds us of the importance of placing physicians and medicine in proper historical context. Decades ago, it was common for medical students to be drilled with questions, often uncomfortably. Professors genuinely believed that such hazing helped students learn to think on their feet and thus become better doctors. Presentations had to be memorized, again as a way to show mastery of knowledge. The large, impersonal type of rounds that Loeb led, in which dozens of physicians, students, and distinguished visitors crowded around the bedside, often uninterested in the patient's input, also happened routinely. 
Paternalism ruled medicine. 
Expectations were also drastically different 50 years ago. Physicians, taught to have an almost fanatical devotion to their patients, spent most of their waking hours either in the hospital or reading about diseases.  
They spun their own haematocrits and made their own Gram stains. 
The terms “house officer” and “resident” bespoke the idea that physicians-in-training were expected to reside in the house—that is, the hospital.
In retrospect, Loeb took this philosophy to its zenith. He had “extremely high standards for himself”, Wendell Hatfield wrote, and believed that all doctors (and nurses) under his command should show the same dedication. When students, residents, or even attending physicians made mistakes or—even worse—cut corners, Loeb saw this as an affront not only to himself but, more importantly, to the patients who deserved their doctors' complete and utmost attention and devotion. “There is no such thing as a dull patient,” he liked to say, “only a dull physician”. 
Indeed, Loeb cherished—and remembered—particularly good diagnoses made by young physicians under his tutelage, especially ones that he himself had missed. Years later, he walked by one such doctor and said “You really got me on that one.”

Robert F Loeb (1895–1973)
Copyright © 2012 Archives & Special Collections, Columbia University Health Sciences Library
Medicine today has changed vastly from the mid-20th century. Concerns about excessive workload and sleep deprivation have led to the institution of night floats and the use of physician assistants. Having an outside life is now seen as crucial to the professional development of physicians. Meanwhile, patients are active participants on rounds; members of the team are expected to introduce themselves and never treat patients as “teaching material”. Perhaps Loeb's “true” legacy is to remind us that great doctors, like other heroic figures, often have character flaws. While we should reject how Loeb taught students, we should remember why he acted as he did: his fanatical devotion to the care of patients.

Dr. Robert F. Loeb Dead at 78; Metabolic Expert, Noted TeacheR

Dr. Robert F. Loeb, Bard Professor of Medicine Emeritus and former chairman of the department of medicine at the College of Physicians and Surgeons of Columbia University, who was considered one of the nation's leading medical teachers, died Sunday at his home, 950 Park Avenue. He was 78 years old.

Dr. Loeb was a specialist in diseases of metabolism and was widely known as a foremost clinician and clinical investigator. In 1922 he was one of group of physicians at Columbia who administered the first insulin treatment for diabetes.

Ten years later, Dr. Loeb first demonstrated the role of the adrenal glands in control of Salt and water metabolism. He went on to demonstrate that patients with Addison's disease could be maintained indefinitely by having large quantities of salt their Until then Addison's disease was invariably fatal.

In one of Dr. Lobb's bestknown studies at Columhia, he and other members of the department of medicine undertook a detailed examination of the fluid and electrolyte, abnormalities that accompany the withdrawal of insulin from diabetic patients. The group was able to provide a rational basis for the modern management of diabetic acidosis.

Research on Malaria

During World War II, Dr. Loeb served as chairman of the Board for Coordination of Malarial Studies. Studies under his direction led to the development of chloroquine and a number of other important antimalarial drugs still in use today.

Dr. Loeb served for many years as vice chairman of the board of trustees of the Rockefeller University, as a trustee of the Rockefeller Foundation, as an overseer of Harvard College and as a member of the President's Scientific Advisory Committee under Presidents Truman, Eisenhower and Kennedy.

He was a past president of the American Society for Clinical Investigation, the Assodirtion of American Physicians and the Harvey Society, and was a member of the National Academy of Sciences, the American Philosophical Society and the Century Association.

Born in Chicago on March 14, 1895, Dr. Loeb studied at the University of Chicago. After two years he entered Harvard Medical School, from which he graduated magna cum laude in 1919. He served his interneship at Massachusetts General Hospital and in 1921 after a year at Johns Hopkins Hospital joined the staffs of Columbia University and Presbyterian Hospital.

Co‐editor of Textbook

Dr. Loeb continued to teach and do research at ColumbiaPresbyterian Medical Center until his retirement as chairman of the department of medicine in 1960. From 1947 to 1960 he was co‐editor of the Cecil‐Loeb Textbook of Medicine. He was editor of Martini's “Principles and Practice of Physical Diagnosis,” and in 1962 he served as Regius Professor of Medicine at Oxford University.

The recipient of honorary degrees from numerous universities, including Harvard, Columbia, Oxford, Rockefeller and the Universities of Paris and Strasbourg, Dr. Loeb was cited by Harvard in 1969 as “a man whose career epitiomizes both the compassion and the brilliance of medical science.”

Surviving are his widow, the former Dr. Emily Guild Nichols; a son, Dr. John N. Loeb; a daughter, Miss Elizabeth G. Loeb; a brother, Prof. Leonard B. Loeb of Berkeley, Calif., and a sister, Mrs. Anne L. Osborne of Hampton, Conn.

A funeral service will be held Thursday at 2 P.M. at the Brick Presbyterian Church, Park Avenue and 91st Street.

Tuesday, February 11, 2025

OCulink and Thunderbolt

Oculink and Thunderbolt 
Thunderbolt is hardware interface that connects external peripheral to a computer.
It was developed by Intel and Apple collaboration and is proprietary product.
There are four versions and version 5 planned for the future with bus speed of 80 Gbit per second
1 and 2 supports 20 Gbit and 3 and 4 supports 40 Gbit per second.
1 and 2 have 20 pins 3 and 4 has 24 points.
 
They have fast and slow data transfer lanes but only selected lanes are connected to data access. Other pins are for grounding and power supply.

PCIe is Peripheral Connect Interphase Express for high speed connection of the motherboard (internal)  to  an external hardware.
 
OCulink port and cables are used to connect to the external devices to the computer motherboard, directly unlike the thunderbolts which are intermediate connections. 
This is to prevent latency in data transfer. 
This factor is very important in playing games in high fps rates and pixel resolution. 
 
Physiology of Motion
FPS means frames per second, Medical Terminology, the brain can see individual frames if the are moving slow. If my memory of undergraduate physiology is right anything above 36 frames per second, the brain interpret as a motion .
There is also lag of election transfer from eye to the brain and back to the eye to see the picture of image. This is about milli seconds that depends on the length of the never. An impulse from toe of the toe takes longer than from the tip of the finger.
This called latency and these films guys have taken this word from medical terminology, I believe.
This comes from reeled motion pictures. The reel has to run at least 36 per second to emulate motion but there is latency of the film projector, too. When we take all these factors into consideration 24 frames per minute has no strain for the eye (brain does not feel pain but the eye does)
Even though one need 36 frames for motion for practical purposes for videos 24 frames per minute is barely enough considering the latency factor. Even though, light travel in space without scatter there is an element of scatter and that is why we see the sky as blue not white.
There is something called spectrum of energy, too and the eye uses certain part of the spectrum for (analog vs physiology) for visualization and we can distinguish only about 16 to 24 colours, whereas the computer can distinguish million colour shades. I am guy with colour blindness which I realized playing billiards on dim light (not in natural light) at night which is getting worse with age.
By the way, we had worse medical teachers of that time, who were learning physiology and anatomy with us. They had gone abroad had got PhDs and they were meant to train them in methodology in a science and not teaching. Our teachers came from Carlo Fonseka Era but Osmund Jayaratne was my fovourite with his brilliant exposition of matters about clouds and lightening and many other topics in physics. 
I loved physics and hated medicine.
Let me come to digital facts.
Digital technology of current era exploits human physiological facts and human weaknesses and use high frame rates of video games to entice people including an old guy like me. 
It is an illusion of motion.
I will leave at that.
 
Graphic cards manage the pixels and rendering and that is why they have lot of pins (20 to 24 pins). 
Not all pins are used for data exchange and some are reserved for grounding and power supply.
They work on 12 volt direct current and the heating that generate while running is due to speed of data transfer and also due to components (transistors, capacitors and gates) within the CPU, RAM, GPU and the Hard Disks. 
These components are connected in parallel and they work independently. Therefore, the current that runs in parallel may vary from 3.3V, 5V and 12V.
The AC power supply which is 220 or 110 is stepped down to direct (battery current) current of 12V and for some components 3.3V and some 5V.

CPU cords have 8 pins.
GPU cords have 20 pins
ATX Motherboard power cord has 24 pins.

There are no components needing series current, except perhaps CMOS battery supply on a computer. 
The advantage of parallel current is the system does not breakdown due to one component failing. 
That is why computer is better gadget than a bulb or an iron or a fridge.

OCulink is the connection system to PCIe internals and externals.
Small firm factor
Direct Connection as opposed to intermediate like thunderbolt connection.
 
It uses PCIe connection
Peripheral Connect Interphase Express
 
Connect to external PCIe
Connected to Graphic Card
Connected to SSDs and docking stations.
Connects the motherboard to the external expansion cards like, Graphic cards, external SSDs and  Network cards.
 
1. Fast
2. Cost effective
3. Less interference  with other electrical circuits.

Prof. Osmund Jayaratne -A lifetime of teaching

Prof. Osmund Jayaratne retired from the Physics Department, University of Colombo and Peradeniya, after a long and distinguished career spanning 44 years. His primary research interest was terrestrial a cloud physics. In his teaching, Prof. Jayaratne mentored more than a thousand students. He also served Sri Lanka in the area of policy related to higher education.
In addition to teaching, Dr. Jayaratne also conducted research on the lightning patterns of Sri Lanka in collaboration with Prof. Lakshman Kannangara.

Loss of sight


A few years after retirement,
Prof. Jayaratne’s eyes developed cataracts. Lens implants, a new procedure in Sri Lanka at that time, were attempted. An infection occurred in one eye and spread to the other. Despite repeated surgical interventions, Prof. Jayaratne suffered complete loss of sight in both eyes — confining him to his home in a nearby suburb of Colombo. His wife, Joyce, is his eyes to the world. She reads to him the latest scientific developments reported in newspapers and magazines.

Bad Things about Min PCs

Bad Things about Min PCs

1. Build Quality

Plastic vs Metal Frame 

2. Available Ports and Extensibility 

3. Upgradedability 

4. Cooling System 
Smaller fan spin at high rate and add to noise level

5. Ventilation and Air Flow

6. More open space means more dust het collected and dust in circuits killer

7. Soldered CPU and Integrated Graphic Cards means poor upgradability.

8. Cost may mount to a standard PV
Dream very support


9. Guarantee and after sale are important.

10. Driver Support for Microsoft Guys 

A6 Mini PC

A 6 Mini PC