Wednesday, 7 May 2014

GATE Preparation: Tips to make notes




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There are students who prepare at home with the number of book options available in the market today. Then there are few aspirants who opt for correspondence coaching courses. A coaching material cannot be assessed until one goes through the same word by word. Hence GATE aspirants can go by some tips of their seniors.
Those who are getting regular classroom coaching need to check whether the institute suits their requirement or not by considering some of the following parameters:
Distinct Study Material- Now-a-days all the coaching institutes offer study material for assistance in studies. But if this material simply copy paste or re-write of materials taken from other books then these hold minimal importance. In comparison to all this, there are several standard books on each subject by good authors which can make your study enjoyable as well as interesting.
Compilation of quality books- While studying theory, conceptualization and building application capabilities, and one needs good collection of books, which can really put our brain on exercise. Ensure that your coaching institute has a collection of good and informative books.
Flexibility- There are aspirants who have slow or fast grasping power than the average. In such cases, it is better to ascertain the model that suits your needs and provide enough guidance to you at the same time.
Tests and Evaluation Model- Ensure and track your progress through a set of tests and evaluation as this is the most crucial part of the preparation. This is the main area where the students fail due to lack of essential test and evaluation material.



Make notes short and concise
·         Maintain formulas, short-cuts and tips/tricks in notes
·         Every field of study has its own vocabulary, so identify words and terms used to represent specific concepts. Maintain them in your notes.
·          Sometimes objective questions can be used to test your ability to distinguish concepts, ideas, theories, events, facts from each other. Construct diagrams, charts, tables or lists to summarize relationships.

What Are We Doing On This Weekend!!!



We usually don’t realize the potential of using our weekend for studies. Have you ever caught in a situation where you don’t have anything to do on weekend? You don’t have a friend to talk, no one at home, nothing is being planned for the weekend. Usually in this situation we either try to sleep or sit in front of TV and change channels, try to call some friend or just find a way to pass our time.
If we think a little, we actually need to make a situation like this to make best use of this time for GATE preparations. To make best use of weekend, let’s make an environment like, there is no plan or commitment on weekends, no friends, no family members, no TVs, no phone calls and no going out. Don’t ever think that life is boring that way. Usually students get into wrong association between wasting time and entertainment. Similarly they associate some useful act, such as studying, reading a book or novel, playing skilled game as boring life. This will usually keep them away from constructive work, making all constructive effort as boring and time consuming.
I always told my friends that if we want to be called lucky we should be either genius or hardworking. I am saying lucky because these are the people make best of their lives and time. With genius I don’t mine the talkative, I mean the real sharp mind that understand and remember everything in one short. They are god gifted and very few of us are blessed with this. Another attribute is hardworking that will definitely an alternative to not being genius at certain level.
I am not a genius for sure, but I am good in giving a try in a best possible way, whether physical or mental. What I learned in M.Tech was a great asset to me and a building block for growth so far. Continuous hard work with clear focus will take you to a place where most of the genius struggle or miss to reach. If a smart guy understands something in an hour and a normal guy understand the same stuff repeating or rereading the same stuff three times, he should do it. And always remember if that smart guy goes out for a day and the normal guy study that day he is already ahead of him. If he keeps doing it continually, we see that he already ahead of the best known in class.
On the other hand, the worst thing is being an average student and not having a motivation and patience to beat the best in class. We need three hours to understand and we are not patient enough to give it an hour, then we can understand where we will be. The lazy attitude is like cancer, kill a human being slowly and finally take us to a very painful death our dreams.
Let’s decide what do we want in life, are we ready to give our nights and weekends for that? If not then we should not take the challenges and live a life that takes us somewhere we don’t know. If we want a life that goes according to our dreams, we need to give hard work with patience to realize them. And I strongly believe, this will make us happy and on the same time, family and friends will be proud of us.The bottom line is there is no alternative to hard work with consistency. Opportunity only knock our doors when are prepared to welcome it, otherwise opportunity never look like an opportunity itself.
Let’s tighten our waist and work hard for the coming GATE exam. We don’t have time to waste, as exam is too close and there is so much to cover. I really wish you all a wonderful luck for GATE preparation and I hope you will make the best out of it.

21 amazing facts about pigeons

1. How old are pigeons?

Pigeons have lived alongside man for thousands of years with the first images of pigeons being found by archaeologists in Mesopotamia (modern Iraq) and dating back to 3000BC. Urban flock of pigeons
Urban flock of pigeons
It was the Sumerians in Mesopotamia that first started to breed white doves from the wild pigeon that we see in our towns and cities today and this undoubtedly accounts, certainly in part, for the amazing variety of colours that are commonly found in the average flock of urban pigeons. To ancient peoples a white pigeon would have seemed miraculous and this explains why the bird was widely worshipped and considered to be sacred. Throughout human history the pigeon has adopted many roles ranging from symbols of gods and goddesses through to sacrificial victims, messengers, pets, food and even war heroes!

2. Biblical reference

The first biblical reference to the pigeon (or dove) was in the Old Testament of the Bible in the first millennium AC and was the story of Noah and the dove of peace. Later, in the New Testament, the pigeon was first mentioned during the baptism of Christ where the dove descended as the Holy Spirit, an image now used extensively in Christian art. These early biblical references have paved the way for the many different ways that the urban pigeon is viewed in modern societies worldwide. Perception of the pigeon through the centuries has changed from God to devil and from hero to zero!
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3. Pigeon guano – foul or fantastic?

Although pigeon guano is seen as a major problem for property owners in the 21st century, it was considered to be an invaluable resource in the 16th, 17th and 18th centuries in Europe. Pigeon guano was a highly prized fertiliser and considered to be far more potent than farmyard manure. So prized, in fact, that armed guards were stationed at the entrances to dovecotes (pigeon houses) to stop thieves stealing it! Not only this, but in England in the 16th century pigeon guano was the only known source of saltpetre, an essential ingredient of gunpowder and considered to be a highly valued commodity as a result. In Iran, where eating pigeon flesh was forbidden, dovecotes were set up and used simply as a source of fertilizer for melon crops. In France and Italy it was used to fertilize vineyards and hemp crops.
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4. The pigeon as a war hero

In modern times the pigeon has been used to great effect during wartime. In both the First and Second World Wars the pigeon saved hundreds of thousands of human lives by carrying messages across enemy lines. Pigeons were carried on ships in convoys and in the event of a U-boat attack a messenger pigeon was released with details of the location of the sinking ship. In many cases this led to survivors being rescued and lives saved. In the First World War mobile pigeon lofts were set up behind the trenches from which pigeons often had to fly through enemy fire and poison gas to get their messages home. The birds also played a vital role in intelligence gathering and were used extensively behind enemy lines where the survival rate was only 10%. In the Second World War pigeons were used less due to advances in telecommunications, but the birds still relayed invaluable information back to the allies about the German V1 and V2 Rocket sites on the other side of the English Channel.
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5. The pigeon as a messenger

The earliest large-scale communication network using pigeons as messengers was established in Syria and Persia around the 5th century BC. Much later, in the 12th century AD, the city of Baghdad and all the main towns and cities in Syria and Egypt were linked by messages carried by pigeons. This was the sole source of communication. In Roman times the pigeon was used to carry results of sporting events, such as the Olympic Games, and this is why white doves are released at the start of the Olympic Games today. In England, prior to the days of telegraphs, pigeons were often taken to football matches and released to carry home the result of the game. Their use as a messenger in wartime resulted in many pigeons being awarded honours by both the British and French Governments. Incredibly, the last ‘pigeon post’ service was abandoned in India in 2004 with the birds being retired to live out the rest of their days in peace.

6. The religious significance of the pigeon

Guru Gobind Singh
Guru Gobind Singh
Many religious groups, including Muslims, Hindus and Sikhs, feed pigeons for religious reasons. Many older Sikhs feed pigeons ceremoniously to honour the high priest and warrior Guru Gobind Singh who was a known friend of the pigeon (or rock dove). Some Sikhs feed pigeons because they believe that when they are reincarnated they will never go hungry if they have fed pigeons in their previous life. Other religious groups in India believe that when a person dies his or her soul assumes the form of a bird (normally a pigeon) and therefore by feeding pigeons and other birds they are caring for the souls of their departed ancestors.
Monk Feeding Pigeons
The pigeon is revered in India with huge flocks numbering many thousands of birds being fed daily at Hindu temples in town and city centres throughout the country.
In both eastern and western societies many of the most entrenched pigeon-related problems in urban areas are considered to be caused, certainly in part, by religious feeding of pigeons.
In the Christian religion the pigeon is both a symbol of peace and of the Holy Spirit.
Sources:

7. Famous pigeons

Cher Ami -
World War I Hero
During the First World War a pigeon named Cher Ami (dear friend) saved the lives of many French soldiers by carrying a message across enemy lines in the heat of battle. Cher Ami was shot in the chest and the leg, losing most of the leg to which the message was attached, but continued the 25-minute flight avoiding shrapnel and poison gas to get the message home. Cher Ami was awarded the French ‘Croix de Guerre’ medal for heroic service. President Wilson -
World War I Hero

GI Joe -
World War II hero
Another heroic pigeon named G.I. Joe saved the lives of a thousand soldiers in World War 2 after British troops had established a position within an Italian town that was due to be bombed by allied planes. Communication equipment was down and the only means of stopping the raid was to attach a hastily written message to G.I. Joe and send him to the allied HQ. G.I. Joe flew 20 miles in 20 minutes arriving at the air base whilst the planes were taxiing on the runway. Disaster was averted with 5 minutes to spare. G.I. Joe received the ‘Dickin’ medal for his bravery.

8. ‘Rock dove’ or ‘pigeon’?

The feral pigeon that we see in our towns and cities today is descended from the rock dove (Columba livia), a cliff-dwelling bird historically found in coastal regions. The word ‘pigeon’ is actually derived from the Latin word ‘pipio’, which means ‘young bird’. The word then passed into Old French as ‘pijon’ and thus the English name ‘pigeon’ was derived, which is now used the world over as a common name for the rock dove. Other common names include ‘domestic pigeon’ and the ‘feral pigeon’.
In 2004 British and American ornithologists officially re-named the bird the ‘rock pigeon’.

9. Why do pigeons bob their heads?


Pigeons feeding
The pigeon has side-mounted eyes, unlike humans and owls which have forward facing eyes. As pigeons have monocular vision rather than binocular vision they bob their heads for depth of perception. The pigeon’s eyes function much better with stationary images and therefore as the pigeon takes a step forward the head is temporarily left behind. The next step jerks the head forward again and so on. This allows the bird to correctly orient itself.

10. Pigeon-gram Air Mail service

Illustration 1: Map of Pigeon Airmail Route
The first organised pigeon airmail service was started in 1896 between New Zealand and the Great Barrier Island. The sinking of the SS Wairarapa off the Great Barrier Island, with the loss of 134 lives, was a catalyst for the service. News of the disaster did not reach New Zealand for 3-days and as a direct result a pigeon-gram service was set up between the two islands. Pigeon-Gram StampPigeon-Gram StampThe first message was carried in January 1896 and took less than 1.75 hours to reach Auckland. Up to 5 messages were carried by each pigeon with the record time for the journey being held by a pigeon called ‘Velocity’ taking only 50 minutes and averaging 125 kmph (only 40% slower than a modern aircraft!). Special pigeon-gram stamps were issued costing 2/- (10 pence) each with the fee being paid in cash before the pigeon was released.

11. Pigeons in Wall Street

Medals Commemorating the Arrival of the Pigeon Post in Paris 1870
Medals Commemorating the Arrival of the Pigeon Post in Paris 1870
One of the richest and most famous families in the world amassed its wealth, certainly in part, as a result of exploiting the pigeon. In the early 1800s the Rothschild family set up a network of pigeon lofts throughout Europe and used homing pigeons to carry information between its financial houses. This method proved to be quicker and more efficient than any other means of communication available at the time. The speed of the service and the ability to send and receive information ahead of the competition helped the Rothschild family amass a fortune, which still exists today.

12. Mating habits of the pigeon

Pigeon Squab and
Egg in Nest
The pigeon mates for life and can breed up to 8 times a year in optimum conditions, bringing two young into the world each time. The frequency of breeding is dictated by the abundance of food. Pigeon eggs take 18/19 days to hatch with both parents incubating the eggs. Young dependant pigeons are commonly known as ‘squabs’.

Pigeon Nest
with 2 Eggs
Both parents feed the young with a special ‘pigeon milk’ that is regurgitated and fed to the squabs. Each squab can double its birth weight in one day but it takes 3 days before the heart starts beating and 4 days for the eyes to open.

Pigeon Squab -
3 Days Old
When squabs are hungry they ‘squeak’ whilst flapping their wings and as a result they are also commonly known as ‘squeakers’.

Pigeon Squabs -
10 Days Old
At approximately 2 months of age the young are ready to fledge and leave the nest. This longer-than-average time spent in the nest ensures that the life expectancy of a juvenile pigeon is far greater than that of other fledglings. Back to top

13. Pigeons are big business

Champion Racing
Pigeon
We normally think of the pigeon as being an unwelcome guest in our towns and cities, but most of us are unaware that racing pigeons can be worth huge sums of money. One racing pigeon recently sold for a staggering $132,517.00! The 3-year old bird was a champion racer, beating 21,000 other pigeons in one long distance race. For this reason he was bought by a British company that breeds racing pigeons for ‘stud’. One very happy pigeon! The previous record price for a racing pigeon was $73, 800.00.

14. How do pigeons navigate?

There are many theories about how pigeons manage to return ‘home’ when released 100s of miles from their loft. A champion racing pigeon can be released 400-600 miles away from its home and still return within the day. This amazing feat does not just apply to ‘racing’ or ‘homing’ pigeons; all pigeons have the ability to return to their roost. A 10-year study carried out by Oxford University concluded that pigeons use roads and motorways to navigate, in some cases even changing direction at motorway junctions. Other theories include navigation by use of the earth’s magnetic field, visual clues such as landmarks, the sun and even infrasounds (low frequency seismic waves). Whatever the truth, this unique ability makes the pigeon a very special bird.

15. Famous people and pigeons

Noah with the
Dove of Peace
The humble pigeon has attracted some very famous fans over the last few thousand years ranging from royalty to rock and roll singers and actors through to fashion designers. One of the most famous royals is Queen Elizabeth of England who has lofts and pigeon keepers at her estate in Sandringham, Norfolk. Elvis Presley
Elvis Presley had a soft spot for pigeons and Mike Tyson is also an enthusiastic pigeon keeper.Mike TysonMike Tyson Even Maurizzo Gucci, the internationally renowned fashion designer, is a keen pigeon fancier spending a reputed $10,000 on one American pigeon. One famous couple, Paul Newman and Joanne Woodward, are reputedly both keen pigeon fanciers, but after being swamped by autograph hunters at a pigeon show they are apparently less comfortable to show their affection for the birds publicly. Last but not least, and probably the most famous of all ... Noah!

16. Pigeon disasters

Passenger Pigeon
Probably the greatest disaster to befall the species was the extermination of the passenger pigeon in North America in the early part of the 20th century. It is estimated that there were 3-5 billion passenger pigeons in North America at the time. Flocks of 100,000s of the birds would blacken the skies as they flew over, but early settlers managed to wipe out every last bird by 1914 through over-hunting.
Passenger Pigeon
Great Pigeon Race 1997A more recent and quite bizarre disaster befell tens of thousands of racing pigeons released from Nantes in France as part of a race held to celebrate the centenary of the Royal Pigeon Racing Association in England. 60,000 pigeons were released but only a few birds ever arrived back at their lofts throughout southern England. One theory suggests that the sonic boom created by Concorde as it flew over the English Channel, at the precise time the pigeons would have been at the same point, completely disorientated the birds, throwing out their inbuilt navigation system.

17. Pigeons as lifesavers

Although the pigeon is one of the most intelligent of all the bird species, man has found limited uses for the birds other than for the purposes of sport, food and as a message carrier. A team of navy researchers, however, has found that pigeons can be trained to save human lives at sea with high success rates. Project Sea Hunt has trained a number of pigeons to identify red or yellow life jackets when floating in the water.
Lifesaving Crew
The pigeons were not only found to be more reliable than humans, but they were also many times quicker when it came to spotting survivors from a capsized or sinking boat. The pigeon can see colour in the same way that humans do but they can also see ultra-violet, a part of the spectrum that humans cannot see, and this is one of the reasons they are so well adapted to lifesaving.

18. Pigeons in the news

Reuters, News Agency
One of the world’s most famous news agencies, Reuters, started its European business by using trained homing pigeons. The service was started in 1850 with 45 pigeons carrying the latest news and stock prices from Aachen in Germany to Brussels in Belgium. Although a telegraph service between the two countries existed, numerous gaps in the transmission lines made communication difficult and slow. The birds travelled the 76 miles in a record-breaking two hours, beating the railway by four hours.

19. Why do you never see a baby pigeon?

Juvenile Pigeons
Most small birds rear and fledge their young in 2/3 weeks with young birds sometimes leaving the nest after only 10 days of life, but pigeons are different; their young remain in the nest for up to 2 months before fledging. Juvenile Pigeon
& Mother
This gives the young pigeon a distinct advantage over many other species of bird due to the fact that it leaves the nest as a relatively mature juvenile, allowing the bird to cope better in the first few days of its life, a dangerous time for all youngsters. Juvenile Pigeons
in Nest
Juveniles can be told apart from adults but it takes an experienced eye. A juvenile’s beak often appears to be far too long for the size of its body and the cere (the fleshy area at the top of the beak) is white in adults and greyish pink in juveniles.

20. What is the natural predator of the pigeon?



Peregrine Falcon
Although the natural enemy of the feral pigeon is now man, with millions of pigeons being killed in control operations the world over, it is the peregrine falcon that is the pigeons’ real natural predator. Although a shy and retiring bird that has its natural habitat along rocky coastlines, the peregrine is now being introduced into towns and cities as a ‘natural’ pigeon control. The peregrine is the fastest bird on the planet when in a dive and can achieve speeds in excess of 200 mph, over 130 mph faster than a pigeon.

21. Are pigeons intelligent?

Pigeons are considered to be one of the most intelligent birds on the planet and able to undertake tasks previously thought to be the sole preserve of humans and primates. The pigeon has also been found to pass the ‘mirror test’ (being able to recognise its reflection in a mirror) and is one of only 6 species, and the only non-mammal, that has this ability. The pigeon can also recognise all 26 letters of the English language as well as being able to conceptualise. In scientific tests pigeons have been found to be able to differentiate between photographs and even differentiate between two different human beings in a photograph when rewarded with food for doing so.