Monday, November 30, 2009

Animal Clichés

We have all heard them. We've all used 'em: well-worn clichés about animals that we use as metaphors to describe one another. He's quiet as a mouse. She eats like a bird. But what do these pithy phrases tell us about animals? When it comes to accurately depicting animals, Let's take a look at some familiar animal clichés and see if there is a grain of truth, or just a grain of sand, in these pearls of wisdom.

QUIET AS A MOUSE: Most mice are pretty quiet, except when they are frightened into squeaking. But one species—the grasshopper mouse of the Midwest and the American Southwest—is known for the noise it makes. This mouse marks its territory in part by unleashing long, high-pitched squeals, just like tiny howling wolves. And although these rodents weigh less than half an ounce and scarcely project the look of a voracious hunter, but they're predators, hunting down insects, scorpions and sometimes even other rodents.

EYES LIKE A HAWK: This is what you want your optometrist to tell you. A hawk can see a rabbit from two miles away or a dime from 1,200 feet. The smallest object a human can see from 1,200 feet is a grapefruit.

BLIND AS A BAT: "All bats can see. But most species—about 70 percent—augment their vision with echolocation." Many bats have tiny eyes, which probably gave rise to the belief that they are blind. In experiments, bats with their vision completely obscured have been able to fly across rooms crisscrossed wall to wall with string and not become entangled.

CRAZY AS A COOT: The coot's reputation may be founded on several behavioral characteristics. Coots splash when they spot predators, but that's hardly crazy. The behavior that earned them their place in the world of clichés is probably their method of taking flight. Because their wings are stubby, coots can't get aloft efficiently. They run along the surface of the water, flapping and squawking and generally raising a ruckus long before they rise into the air. For short flights of 100 yards or so, they may not even get airborne. They just run across the water. Crazy? Not likely, but it sure looks that way.

HUNGRY AS A BEAR: Now that's hungry. In fall when salmon first arrive in the streams and grizzlies are most hungry, a big male can eat up to 90 pounds of fish in a single day. A hungry polar bear may be able to eat more than 100 pounds of blubber and meat in a day. So if you have friends who eat like polar bears, you might tell them to watch their cholesterol. And remind them that about 80 percent of the grizzly bear's diet is made up of plenty of greens, fruit and tubers—some 200 plant species in all.

BUSY AS A BEE: Bees are very busy. All the bees in a hive have assigned duties. For the queen and also the males, called drones, the tasks are simple. The queen lays eggs, producing more bees, and the drones fertilize the queen. But the real busy bees are the workers, which are undeveloped females. Workers gather nectar to make honey, build the wax combs in which larvae are raised, defend the hive, feed the queen and the larvae, and when the hive gets too warm, they cool things down by flapping their wings—up to 11,000 times per minute. A big hive will include as many as 60,000 busy workers.

WISE AS AN OWL: Wise as an owl looks might be a better way to phrase it. Hawks and crows are often thought of as the whiz kids of the bird world, but if appearances count, owls are at the head of their class. Owls have eyes that face forward similar to ours and they look calm, indifferent and scholarly, like a judge. The owl's reputation for wisdom traces to Greek mythology. Athena, goddess of wisdom, traveled with an owl on her shoulder. The link of owls to wisdom, at least in ancient Greece, apparently dates to 490 B.C., when King Darius I of Persia was attacking Athens. In a battle on the Plain of Marathon, 10,000 Greeks fought back and seemed to be losing when an owl soared over the field and landed on the shoulder of the Greek general, Miltiades. The Greeks took this to mean that Athena was on their side and, heartened, won the battle. After that, owls were popular in Athens. The wealthy even strolled around town with owls in cages or perched on their shoulders.

BIG AS A MOOSE: That's plenty big. The moose is the largest member of the deer family. The biggest moose come from Alaska, where they may weigh more than 1,800 pounds and stand more than 7.5 feet tall at the shoulder.

EATS LIKE A BIRD: If someone says you eat like a bird and has songbirds in mind, you might consider going on a diet. Birds are voracious eaters. Most birds eat 25 to 50 percent of their body weight daily. Birds have high metabolisms, burning up calories faster than a long-distance runner. Hummingbirds are probably the metabolic champs, maintaining their wing- blurring flight by eating almost continuously all day long, putting away a meal of flower nectar—supplemented with the occasional spider or insect—every 10 minutes. They must eat about twice their body weight daily, the equivalent of a 150-pound man chowing down about 1,000 quarter-pound burgers a day, bread and all.

LAZY AS A SLOTH: Sloths, those tree-hanging denizens of Latin American rain forests that look like little bears suspended upside down from branches, are not lazy. They're just slow. And their slowness is a product of their metabolism, which is only 40 to 45 percent of what a biologist would expect to see in an animal a sloth's size. Everything they do is slow. On average, a sloth will move about 125 feet per day. Sloths even digest slowly, taking a full month to process the food in a full stomach.

Animal clichés, right or wrong, are the mementos of a time when we knew far less about wildlife than we do now. In many cases the phrases are what remains of long-ago beliefs and mistaken ideas. What say?

Source: nwf.org

Mohan Rao.

The mad mind does not halt. If it halts, it is enlightenment.
- Zen Proverb

Saturday, November 28, 2009

The man they could not hang

Good Morning. Here is the daily dose for the day.

Throughout history there have been many magical and mysterious men whose legends survive for ever. But the man we are going to see today is a mystery man from our very recent past. Just read on.

For the past 100 years, the myths surrounding John 'Babbacombe' Lee's story have taken on a life of their own. Lee, nicknamed The Man They Could Not Hang, came to prominence when he was convicted of murdering his employer, Emma Keyse, and setting fire to her Babbacombe home, called The Glen.

During his trial, the prosecution portrayed Lee as a depraved lunatic capable of smashing an old lady's head with an axe, then slashing her throat with a knife. The judge, in passing sentence of death, remarked how calm Lee's demeanour had been throughout the trial.

"In the days leading up to the date of execution, Lee read the Bible prodigiously and proclaimed his innocence. It is said he told the prison chaplain the real culprit was the lover of his half-sister, Elizabeth Harris, who was cook at The Glen and expecting a child which was later delivered out of wedlock in Newton Abbot Workhouse."

The prison governor's logbook states on the morning of the execution, as Lee approached the gallows trapdoor, he told two prison guards he had dreamt 'three times the bolt was drawn, and three times the bolt failed to act'.

Lee was a lonely figure on the gallows — but each time an attempt was made to open the trapdoor, it stuck. After each failed attempt the trapdoor was tested and it opened normally, but when Lee stood on it again the door would not open. Three times this happened, each with the same outcome.

The Home Secretary told Parliament he could not expect a man to 'twice face the pangs of imminent death'. Lee began a 23-year prison sentence in Exeter, and from that day the myths about his life spread across the world.

Some theories include:

1. Witchcraft and devilish incantations were often talked of when people tried to reason Lee's escape from death.

2. Other people told stories of how Lee's mother had visited the church graveyard near her home at Abbotskerswell, recited the Lord's Prayer backwards and summoned the Devil to save her son.

3. In 1905, the witchcraft theory gained credence from a surprising source — the Archdeacon of Westminster, Basil Wilberforce.

The editor of The Times, who poured scorn on the Home Secretary's decision to eventually reprieve Lee, said Lee's story would 'encourage foolish and superstitious people to believe, in spite of evidence as clear as noonday, that Lee was wrongfully convicted'.

After his release, Lee went to London, where he then eloped with a barmaid, abandoning his wife who was expecting their second child. He then seemingly disappeared without trace — having reportedly visited Australia, America and Canada — and Mike Holgate only recently discovered that Lee died in 1945.

Records show Lee died, aged 80, on March 19, 1945. The legend certainly did not die with Lee.


Source: thisissouthdevon.co.uk

Mohan Rao.

Make happy those who are near, and those who are far will come.
- Zen Proverb.

Thursday, November 26, 2009

Backronym

We have heard of acronym, but this is something many have unheard of Backronym (or bacronym or also retronym)

It is a phrase that is constructed "after the fact" from a previously existing word or abbreviation, the abbreviation being an initialism or an acronym. Backronyms can be classified along various types. Note that these types are not all exclusive of each other, that is, a backronym can be mnemonic, pure, and recursive.

Pure Backronyms - It occurs when the root word was not previously or commonly known as an acronym or abbreviation Eg) Adidas has been written about in All Day I Dream About Sports: The Story of the Adidas Brand. Adidas comes from the name of the shoe company's founder, Adolf Dassler, whose nickname was Adi (Dassler).

Replacement Backronyms: Some backronyms are back-formed from an initialism or acronym that is an abbreviation with another meaning Eg) IBM is the official abbreviation for "International Business Machines", but is sometimes jokingly referred to as "I've been moved", used among many IBM employees because of the frequent position changes within the company

A recursive backronym:It is an abbreviation that refers to itself in the expression for which it stands. Eg) VISA — Visa International Service Association


Apronym

Many backronyms are apronyms, that is, the word itself is relevant to its associated phrase.[18] The relevance may be either serious or ironic.
Eg) The term BASE jumping, which was coined to signify a parachute jump from one of the bases building, antenna, span, or earth.

Anacronym

Some backronyms are replacements of other phrases that have become obsolete, either for technological, political or marketing reasons. The result is an anacronym.
Eg) DVDs were originally designed as media for audio-visual data, and as such the abbreviation originally stood for "Digital Video Disc". As the format inevitably came into common use for other data storage, a different semi-official expansion was created, namely "Digital Versatile Disc". However, "DVD" officially does not stand for anything.

Mohan Rao.

Tuesday, November 24, 2009

A frowned upon dace form

Sadir is a very ancient dance form of India with no exact date of origination. Some say that sculptural evidence points it's roots back to the fifth century AD.It is said to be artistic yoga as said in the scriptures, because it requires pure dedication.

During the Palava and Chola Dynasty (4Ad -12AD) the art of dancing flourished due to its immense patronage. The intimate association of dance with religion as ritual was established in the temples, and the institution of Devadasi was created

Local kings often invited temple dancers (devadasi) to dance in their courts, the occurrence of which created a new category of dancers -- rajanarthakis By the 18th century, the dance form of Tamil Nadu had crystallised into a distinct and separate style, called Dasiattam, because it was performed by the devadasis in temples.

The conquest of India by the British took its toll on the art as it did on everything else Indian. In the westerners eyes, the devadasi tradition was considered little better than prostitution and fell into disrepute.Under such a puritanical atmosphere, the classical science of dance was ignored, and a dancer was considered a woman of ill repute. An Act of the Madras Presidency banning temple dancing sounded the death knell for dance.

In the early 1930s, the rising national consciousness that had awaked across India led to reformation in the cultural spheres. A meeting was convened at the Music Academy at Alwarpet, Chennai, to save this art form. The first step taken was to give it a new name so as to give it a new lease of life. It was re-christened as "BHARATA NATYAM".


Mohan Rao.

The reverse side also has a reverse side
- Zen Proverb

Monday, November 23, 2009

Age of a Horse

Good Morning. Here is something useless to know for the day.

We all know that the young one of the horse is called as pony. But not many know that pony is a general term and there are further classifcations to it.

The following terminology is used to describe horses of various ages:

Foal: a horse of either sex less than one year old. A nursing foal is sometimes called a suckling and a foal that has been weaned is called a weanling. Most domesticated foals are weaned at 5 to 7 months of age, although foals can be weaned at 4 months with no adverse effects.

Yearling: a horse of either sex that is between one and two years old.

Colt: a male horse under the age of four. A common terminology error is to call any young horse a "colt," when the term actually only refers to young male horses.

Filly: a female horse under the age of four.

Mare: a female horse four years old and older.

Stallion: a non-castrated male horse four years old and older. Some people, particularly in the UK, refer to a stallion as a "horse".

A ridgling or "rig" is a male horse which has an undescended testicle or is improperly castrated.[16] If both testicles are not descended, the horse may appear to be a gelding, but will still behave like a stallion.

Gelding: a castrated male horse of any age, though for convenience sake, many people also refer to a young gelding under the age of four as a "colt".

In horse racing, the definitions of colt, filly, mare, and stallion may differ from those given above. In the UK, Thoroughbred horse racing defines a colt as a male less than five years old, and a filly as a female less than five years old. In the USA, both Thoroughbred racing and harness racing defines colts and fillies as four years old and younger.

Now are you Confused about what to call a horse. You better be.

source: Wikipedia

Mohan Rao.

If you want to know your past--look into your present conditions. If you want to know your future--look into your present actions. - Zen Proverb

Friday, November 20, 2009

Access Control

We all have been used to passwords. we have used them for our log-ins, emails etc. The passwords are primarily used for access control to your files. But did you know that there are also other methods available for access control. Just read on.

Single-use passwords. Having passwords which are only valid once makes many potential attacks ineffective. Most users find single use passwords extremely inconvenient. They have, however, been widely implemented in personal online banking, where they are known as TANs. As most home users only perform a small number of transactions each week, the single use issue has not led to intolerable customer dissatisfaction in this case.

Security tokens are similar in some ways to single-use passwords, but the value to be entered is displayed on a small (generally pocketable) item and changes every minute or so.

Access controls based on public key cryptography e.g. Secure Shell. The necessary keys are usually too large to memorize (but see proposal Passmaze) and must be stored on a local computer, security token or portable memory device, such as a flash disk or floppy disk.

Biometric methods promise authentication based on unalterable personal characteristics, but currently (2008) have high error rates and require additional hardware to scan, for example, fingerprints, irises, etc. They have proven easy to spoof in some famous incidents testing commercially available systems, for example, the gummie fingerprint spoof demonstration,[10] and, because these characteristics are unalterable, they cannot be changed if compromised; this is a highly important consideration in access control as a compromised access token is necessarily insecure.

Single sign-on technology is claimed to eliminate the need for having multiple passwords. Such schemes do not relieve user and administrators from choosing reasonable single passwords, nor system designers or administrators from ensuring that private access control information passed among systems enabling single sign-on is secure against attack. As yet, no satisfactory standard has been developed.

Envaulting technology is a password-free way to secure data on e.g. removable storage devices such as flash drives. Instead of user passwords, access control is based on the user's access to a network resource.

Non-text-based passwords, such as graphical passwords or mouse-movement based passwords. Another system requires users to select a series of faces as a password, utilizing the human brain's ability to recall faces easily.. So far, these are promising, but are not widely used.

Graphical passwords are an alternative means of authentication for log-in intended to be used in place of conventional password; they use images instead of text. In some implementations the user is required to pick from a series of images in the correct sequence in order to gain access. While some believe that graphical passwords would be harder to crack, others suggest that people will be just as likely to pick common images or sequences as they are to pick common passwords.

2D Key (2-Dimensional Key) is a 2D matrix-like key input method having the key styles of multiline passphrase, crossword, ASCII/Unicode art, with optional textual semantic noises, to create big password/key beyond 128 bits to realize the MePKC (Memorizable Public-Key Cryptography) using fully memorizable private key upon the current private key management technologies like encrypted private key, split private key, and roaming private key.

Source: Wikipedia

Mohan Rao.

With coarse rice to eat, with water to drink, and my bended arm for a pillow - I have still joy in the midst of these things. Riches and honors acquired by unrighteousness are to me as a floating cloud. - Confucius

Abel Prize

Noble prize is the most honorable prize given to people for outstanding contribution to Peace, Literature, Chemistry, Physiology or Medicine, economics and Physics. But there is no Nobel prize award for mathematics(a reason as to why this subject was omitted is still being speculated).

So how can be Mathematicians honoured. Yes there is an international award that is being awarded to mathematicians for contribution to mathematics. It is called the "Abel's Prize".

The Abel Prize is an international prize presented annually by the King of Norway to one or more outstanding mathematicians. The prize is named after Norwegian mathematician Niels Henrik Abel (1802–1829). It has been described as the "mathematician's Nobel" prize and is among the most prestigious awards in mathematics. (Though The Fields Medal is often described as the "Nobel Prize of mathematics", but it differs in being awarded only once every four years to people younger than forty years old)

The prize was first proposed to be part of the 1902 celebration of 100th anniversary of Abel's birth. In 1899, shortly Sophus Lie, the Norwegian mathematician, proposed establishing an Abel Prize when he learnt that Alfred Nobel's plans for annual prizes would not include a prize in mathematics. However, Lie's influence waned after his death, and the dissolution of the Union between Sweden and Norway in 1905 ended the first attempt to create the Abel Prize.

In 2001, after interest in the prize had risen, a working group was formed to develop a proposal, which was presented to the prime minister of Norway in May. In August 2001, the Norwegian government announced that the prize would be awarded beginning in 2002, the two-hundredth anniversary of Abel's birth.


The superior man is satisfied and composed; the mean man is always full of distress
- Confucius