Friday, July 19, 2019

Data Visualisation Presentation..

Dr. Sukanya explaining the finer aspects of Data Visualisation in R
Today 19 July 2019, Business school and Engineering school of Alliance University joined hands for an interesting session on Data Visualisation using interesting free and open source software available, thanks to the Free Software Foundation. R, Python and Gnuplot .. 👍👍🙏

The session was well attended by students and faculty alike. 

Data visualisation is a very important aspect of Data analytics given Big Data and different forms of data including videos and audios available in the Internet ecosystem. 

Dr. Sukanya spoke of using R and Dr. Shobhana spoke of Python and it's capabilities in Data Visualisation.  Dr. George spoke of the slightly old gnuplot with its strength in visualising graphical data in 2D and 3D.

This will be followed up soon by sessions soon to discuss detailed aspects of Data Visualisation using R and Python separately. 

Dr. Shobana from Alliance Engineering gave a top class presentation on Python
The effort put up by both the faculty members in sparing their time to read, think and do a presentation on Data Visualisation has not only improved their professional competence a great deal, it has made them competent and confident to engage serious sessions for senior students both in the Engineering and Business schools.

The impact on the audience in getting exposed to a highly important and emergent area of Data Analytics , ie., Data Visualisation was an added bonus.  

Looking forward to more such presentations in cutting edge areas in future.

George..

Tuesday, July 16, 2019

The greatness of Pandit Jawaharlal Neru ..

A true and great leader to the core ..
Pandit Jawaharlal Nehru was the first Indian Prime Minister. He also happens to be a widely misunderstood politician because of the political allegations and accusations that have been labeled against him by an illiterate and selfish political class.

I feel whatever be the personal working style of Nehru, he is one of the greatest Indian politicians India has ever had, who could be put in seniority after Mahatma Gandhi. He who has spent almost ten years in British prisons fighting for Indian freedom from British exploitation and misrule.

Nehru has been a great literateur who has enriched global literature by his literary contributions through four of the greatest books on Indian culture and civilization,  
  • Discovery of India
  • Glimpses of World History,  
  • Letters from a father to his daughter and 
  • An Autobiography
The sad fact with people slinging mud on Nehru are people who are ignorant and have not made any attempt to read any of these books, most of them have been written while in prison.
The dead cannot defend themselves ...
One of greatest works on India, ever ..
The other contender of the fundamentlist thinking group in the country have nothing to say when asked neither how many years Sardar Vallabhai Patel has spent in British prisons raising his voice against British oppression of Indians nor his literary contributions to the world ? Was Patel an opportunist who was careful not to antagonise the British and be in their bad books, history will say.

If India never had a leader and a global statesman like Jawaharlal Nehru, would we have progressed so much in Science and Technology ? Would we have had all the great establishments in Space Science, Atomic energy, IITs, IIMs, the green revolution, the white revolution and the like .. ?

If Nehru had not called Vikram Sarabhai aside in 1961-62 and had not asked him to start some basic and simple space experiments, initially sounding rockets to study the altitude variation of temperature and gaseous composition from Thumba, Trivandrum, to understand the truths of space and nature, would Indian space science and technology have matured to this state now ?

 And Nehru knew exactly which all sectors of the economy and areas of science and technology, our crappy bureaucrats should be allowed to interfere and where all it should be left free to the specialists and subject experts. 

That is why we are now a great nation now. We had great leaders who suffered in prisons for long periods even for three years at a stretch, often for total periods of individually upto 9-10 years, in non-cooperation and Quit India movements, fighting for Indian freedom. 

Leaders who were intelligent, sincere and honest to the core for the sake of the country ..

George ..

Monday, July 15, 2019

World Class Manufacturing ..

Here is a link ..

Click here for a video of WCM ..

george..

History of lunar robotic probes ..

History behind lunar missions 

Moon surface bright North hemisphere, courtesy Washington Post.
After India’s successful lunar orbiter Chandrayaan 1 success in 2008, the Chandrayaan 2 robotic rover launch was planned for 2012, but was postponed when Russia grew jittery with sharing their technology.

Despite this hiccup, India developed the technology indigenously, launch date was fixed in January 2019. Knowing that some more maturing of technology was needed, the launch got postponed to April ‘19 This is the greatest satisfaction and point of consolation in this whole exercise. We may learn slowly, but the learning is firm and sure..

With the orbiter and rover technology indigenously developed we have the wherewithal and capability to launch extra terrestrial missions to anywhere in the Universe.

July '19, Courtesy Washington Post (WP)
After the Israeli private lunar launch failure, our launch was postponed from April to July for carrying out more checks and now again to another slot not decided yet . Lifting a 640 Tonne craft to 200-300 km altitude has it’s own challenges. Europe is decades away from such high technology ..

Doing some research found these facts and dates - Prior to this, Chinese Yutu robotic rover aboard Chang’e 3 did a moonwalk in 2013. Earlier Lunokhod 1 of Russia (USSR) aboard the Luna 1 did moonwalk in 1970. That was the earliest history of moonwalking..

If India never had a leader and a global statesman like Jawaharlal Nehru, would we have progressed so much in Science and Technology ? Would we have had all the great establishments in Space Science, Atomic energy, IITs, IIMs, the green revolution, the white revolution and the like .. ?

If Nehru had not called Vikram Sarabhai aside in 1961-62 and had not asked him to start some basic and simple space experiments, initially sounding rockets to study the altitude variation of temperature and gaseous composition from Thumba, Trivandrum, to understand the truths of space and nature, would Indian space science and technology have matured to this state now ?

A true and great leader to the core ..
 And Nehru knew exactly which all sectors of the economy and areas of science and technology, our crappy bureaucrats should be allowed to interfere and where all it should be left free to the specialists and subject experts.

It is so gratifying to note that the Indian government supports the stance of our founding fathers and are making the right choices and steps taking it to the forefront of nations in high technology applications.

While closely preserving our democratic traditions, bringing the high impact areas of renewable energy, space exploration, hi-technology research, employment generating growth and poverty alleviation to the forefront should be the lookout of all citizens of the country.  Effective and efficient decision making, devoid of favouritism and corruption, should be the the mantra of the political class to take the country forward meaningfully and gainfully.

George.

Sunday, July 14, 2019

10 critical moments in Chandrayaan 2 mission ..

10 critical moments in the 9 week Chandrayaan 2 Moon mission of ISRO .. The July 15 2019 mission of Chandryaan 2 was abandoned as a glitch was detected in the spacecraft functioning.

1. Launch to GSLV rocket from Sriharikota 

2. Launch of spacecraft after escaping earths gravity

3. Traveling distance to the moon

4. Entering lunar orbit

5. Drops down and settles in a 100 km altitude lunar orbit

6. Drops the lander with rover

7. Rover has a soft touchdown near lunar South Pole

8. Lander releases the rover

9. Rover steps out to lunar surface 

10. Over 14 days rover does a 200 m *Moonwalk*  ..

And all this is controlled remotely from the ISRO Deep Space Network at Byalalu near Bangalore 3,74,000 km away from lunar surface .. 

🙏🙏🙏👏👏👏

Thursday, July 11, 2019

Better by Atul Gawande ..

Atul Gawande, a US surgeon of Indian parentage
Finished reading an excellent book Better by Dr. Atul Gawande, an American surgeon, published by Penguin books. 

Dealt with many issues like the treatment / operation camps and casualties in the US-Iraq war, to euthanasia, capital execution by injections to oncology, cystic fibrosis affected children, etc.. really excellent writing ..

Helps get good understanding of the medical profession in general, doctor's mind in particular and the moral dilemmas faced by medical professionals and understand how medical science has helped through better medical care and mass immunisation drives reduce infant mortality and improve human longevity across the world..

One chapter talks exclusively on how male and female doctors attend patients of the opposite sex and the ethical issues involved.. Another talks of how and why doctors are taken to litigation on the very sensitive issue of medical / surgical failures, which essentially leads to higher medical costs in US and the world. 

The impact of the Apgar score to reduce infant mortality rates across the world is well illustrated . 

The Apgar Score is a method to quickly summarize the health of newborn children against infant mortality. Virginia Apgar, an anesthesiologist at NewYork–Presbyterian Hospital, developed the score in 1952 to quantify the effects of obstetric anesthesia on babies. - Wikipedia

The Apgar score used in the paediatrics section in medicine, helps me to innovate its application into retailing and other service sectors in the industry.

The importance of the influence of bell shaped normal distribution in medical treatment also gets special mention in the book. 

A good read. I have also read some of his earlier books like Checklists (click here) and Being Mortal. His writing style is captivating and explains complex medical concepts, conditions and medical treatments in very simple terms to be clearly understood by the layman.

George 

Chandrayaan II - the details and what to look out for !!

The trajectory of the rocket and the spacecreft
In spite of all the high profile Apollo missions by US planned under a spirited Kennedy administration in the early 60s and executed by the Nixon administration in the late sixties, 1969 to be precise, it took 39 more years until Indian ISRO’s lunar orbiter Chandrayaan I discovered the presence of magmatic water on a moon crater in 2008.
  
Even though US disbanded the successful Apollo Moon Mission programme by Dec. '72 after 7 missions after the Apollo 17 mission, the data brought down from lunar atmosphere and rock samples from lunar surface were not tested for water presence, considered the most vital element in the subsistence of organic life as we know it, anywhere in the Universe. Even though controversies abound, if the US moon landings are ever debunked by future generations, it will indeed be a sad day for global science and technology ..

Click here for the Astronomy Now website that gives a very clear pic of the mission ..

The second Indian mission Chandrayaan II is headed for a landing of the lander Vikram for the first time ever in the treacherous area exactly 600 kms away from the South Pole of the moon between the craters Manzenius C and Simpelius N at 70 degree South latitude on 6 September 2019. The rover Pragyaan in the lander has a one lunar day life (14 earth days) and is capable of moving 150-200 m on lunar surface.

There are a lot of ifs here, but on a positive note, will it make some surprising discoveries about the origin of the moon ?

The assembly of the spacecraft payloads traveling to lunar orbit
What is the difference between the Chandrayaan I and Chandrayaan II missions ?

1. Chandrayaan I spacecraft was just an orbiter of the moon with a crash landing module (finished it's mission in 2008 itself) while Chandrayaan II is planning a soft landing on the moon using a lander and move a robotic rover on lunar surface for about 200 m to collect data for studying it's origins.

2. Chandrayaan I was launched on a less powerful rocket, Polar Satellite Launch Vehicle (PSLV C11) which through a series of slingshot missions helped the spacecraft of the Chandrayaan I orbiter escape the earth's gravitational pull. In contrast, Chandrayaan II uses the Geostationary Launch Vehicle (GSLV Mk III) with higher power that vertically takes off and develops enough thrust to escape the earth's gravitational pull. The spacecraft is put on the solar orbit after six slingshot maneouvres for its seven week sojourn to the lunar orbit.

3. Chandrayaan I mission objectives were to just orbit the moon and crash land a module while Chandrayaan II objectives are much laudable and can help throw light on the evolution of the solar system itself.

Why are we interested in knowing about the origin of the moon ?
Firstly, it will help us to understand the formation of the other planets and their moons a couple of billions of years back and secondly, perhaps throw light on the formation of the solar system and galaxies billions of years back.  It is going to be a scientific and technological treat for the scientific and technical brains of the space agency as well as a treat for the people of the world to know how their planet came to be what it is today after 4.6 billion years of evolution. A great satisfaction for the Engineers and Scientists at ISRO to have furthered the frontiers of knowledge in understanding the Solar system ..

There are presently 4 theories floating in scientific circles about the origin of the moon. 

1. Double Planet Theory (Co-creation theory) - at the origin of Universe itself, Earth and moon were co-created as separate planets
2. Fission Theory - material spun off from earth over millions of years resulting in the formation of the moon
3. Capture Theory - Space debris floating around was captured by Earth and one of the captured large debris happened to the moon
4. Large Impact Theory (Giant Impact Hypothesis)  - an unknown large object is said to have impacted the earth resulting in many fragments. The heavier fragments coalesced to form the Earth and the lighter fragments got thrown off and became the moon.
Sept 6, 2019 will be a great day for Indian space research .

Even though the Moon is the closest space object from the earth, we still do not known how it was formed and when. Probably Chandraayan 2 would throw more light on the origin of the moon and help us to debunk the other three ..

The safe ejection from the Chandrayaan II orbiter, of the Lander (Vikram) and Rover (Pragyaan) from a 100 km altitude orbit, riding piggyback on 3.3 T space vehicle is very crucial. The craft is taken outside earth orbit on the 640 T GSLV MkIII M1 rocket from Sriharikotta. The trip in the sun's orbit over a 6 week long period covering 3,82,000 kms is an event the whole world is eagerly looking forward to. 

India's successful Chandraayan I launched in 2008 had the orbiter and the Moon Impact Probe while this mission comes with the complete package to walk around the moon and do some basic and simple data collection and experimentation.
The mission in brief ..
Even though the Chandraayan II project should have taken place around 2012-13 as per original plans, due to unforeseen delays with a collaboration with Russia for the lander and the rover technology, that did not materialise, it got delayed. Then India, thanks to the government at that time which gave full support, embarked on the indigenous technology route when the lander and rover were developed indigenously all alone. The project thus got extended to 2019.

The list of instruments on the Orbiter, lander and rover are given below. (courtesy space.com, click here for the link)

On the Orbiter :
  • Terrain Mapping Camera 2 (TMC-2), which will map the lunar surface in three dimensions using two on-board cameras. A predecessor instrument called TMC flew on Chandrayaan-1.
  • Collimated Large Array Soft X-ray Spectrometer (CLASS), which will map the abundance of minerals on the surface. A predecessor instrument called CIXS (sometimes written as C1XS) flew on Chandrayaan-1.
  • Solar X-ray Monitor (XSM), which looks at emissions of solar X-rays.
  • Chandra's Atmospheric Composition Explorer (ChACE-2), which is a neutral mass spectrometer. A predecessor instrument called CHACE flew on Chandrayaan-1's Moon Impact Probe.
  • Synthetic Aperture Radar (SAR), which will map the surface in radio waves. Some of its design is based on Chandrayaan-1's MiniSAR.
  • Imaging Infra-Red Spectrometer (IIRS), which will measure the abundance of water/hydroxl on the surface.
  • Pragyaan in close quarters ..
  • Orbiter High Resolution Camera (OHRC) to examine the surface, particularly the landing site of the lander and rover.
  • Laser Retroreflector Array (LRA) from NASA
The lander's instruments include:
  • Instrument for Lunar Seismic Activity (ILSA), to look for moonquakes.
  • Chandra's Surface Thermophysical Experiment (ChaSTE), to examine the surface's thermal properties.
  • Radio Anatomy of Moon Bound Hypersensitive ionosphere and Atmosphere (RAMBHA-Langmuir Probe), to look at plasma density on the surface.
The rover instruments include : two science instruments to look at the composition of the surface:
  • the Laser-Induced Breakdown Spectroscope (LIBS) and 
  • the Alpha Particle X-Ray Spectrometer (APXS).      courtesy space.com
The mission in graphics, courtesy ToI ..
What happens on lunar surface ??  

The orbiter at a height of 100 km above lunar surface with release the lander-rover combo for a soft landing on lunar surface. After detaching itself from the lander, the rover Pragyaan will spend a lunar day, almost 14 earth days on the lunar surface and walk about 150 - 200 m on the unexplored rocky terrain in the South pole of Moon from Sept 6 to Sept 20, 2019 collecting data and samples of surface rocks.

It is the first time that any country is attempting a landing on the dark side of the moon in the Southern hemisphere.

George ..

Data Visualisation Presentation..

Dr. Sukanya explaining the finer aspects of Data Visualisation in R Today 19 July 2019, Business school and Engineering school of Alli...

My popular posts over the last month ..