Wednesday, November 19, 2008

Mission perfect- Chandrayan 1(India's Moon Mission)

The successful critical manoeuvre on November 8 that put Chandrayaan-1 in an orbit around the moon marked the completion of the most important phase of the Indian lunar mission. The rest of the mission involves only standard orbit manoeuvres, the likes of which the Indian Space Research Organisation (ISRO) is quite used to, and the performance of the on-board scientific instruments during the mission life of two years. The precision with which the crucial operation was exe cuted has unequivocally demonstrated ISRO’s capability to take up the more complex deep space missions as distinct from numerous near-earth missions in the past. The achievement has put India in the exclusive club of space-faring nations that have ventured beyond the sphere of earth’s gravitational influence. That ISRO brought this off in its first attempt is all the more commendable.
Although ISRO’s inherent scientific ability was never in doubt, Chandrayaan-1 — the maiden deep space endeavour — posed new technological challenges in telemetry, tracking, miniaturisation of on-board systems and devices, novel power packs and special thermal control of the spacecraft to withstand conditions of high solar load hitherto not experienced in the near-earth environment. The performance of the mission so far is testimony to ISRO’s advanced capabilities in all these respects. Nevertheless, as ISRO plans for Chandrayaan-2 in 2012-13 and a manned mission to space in 2015, when it will face even greater technology challenges, the question is whether the venture is worth the huge cost it will entail. A political factor that is relevant is the world’s constant India-China comparison and the latter’s demonstrated technological prowess in space technology. What is more, given the resurgent interest in tapping the moon’s resources, there is a strategic dimension to space missions. This becomes particularly relevant if one notes the discordance between the Moon Treaty, which very few countries have ratified, and the Outer Space Treaty, which most nations have. While the former emphasises the principle of ‘common heritage of mankind,’ the latter articulates it weakly. It is from this perspective that the rhetorical question posed by ISRO’s former chairman K. Kasturirangan, “Can we afford not to go to the moon?” and the basic question of whether India should venture into deep space need to be addressed. At the same time, as ISRO begins to think in terms of manned missions to space, which will cost a great deal more than unmanned missions, the cost-benefit analyses need to be done more rigorously than for relatively low-cost missions such as Chandrayaan. But these are policy issues that can be taken up later. Now is the time to congratulate ISRO on taking India’s exploration of space up a level — which very few developing countries have even aspired to reach.

RBI, SEBI unveil fresh measures to calm markets

Market regulator disapproves overseas lending by FIIs

MUMBAI: The Reserve Bank of India on Monday reduced the repo rate — a short term indicative lending rate under the Liquidity Adjustment Facility (LAF) — by 100 basis points to eight per cent with immediate effect, “in order to alleviate the pressures and, in particular, to maintain financial stability.”
The repo rate is the rate at which banks borrow from the central bank. The global financial situation continues to be uncertain and unsettled. Even as countries directly affected by the turmoil have taken aggressive action to manage the crisis, confidence and calm is yet to be fully restored in the financial markets. Due to financial integration, this uncertainty is transmitting also to countries outside the epicentre of the crisis. “India too is experiencing the indirect impact of the global liquidity constraint as reflected by some signs of strain in our credit markets in recent weeks,” the RBI stated in a press release on Monday.Global crisis
The RBI has taken a number of measures over the last one month to augment domestic and forex liquidity.
The RBI has been and will continue to monitor the impact of global developments on our financial markets and on our liquidity conditions and will take action as appropriate, it added. Meanwhile, the Securities and Exchange Board of India on Monday disapproved overseas lending and borrowing activity of foreign institutional investors (FIIs). The market regulator stated that “SEBI disapproves of the overseas lending and borrowing activity of FIIs and the consequent selling pressure in the cash market in India. SEBI has communicated its disapproval to the FIIs. The lending borrowing activity of FIIs is being monitored and if necessary stronger measures will be taken by SEBI as considered appropriate,” it added. SEBI further stated that it has been reviewing the data submitted by (FIIs) with regard to their stock lending activities abroad. On the domestic stock lending mechanism, SEBI stated that, it finds that this facility has not been used by the institutions while the stock lending mechanism has been made operational in the Indian market. “SEBI is reviewing the difficulties in the use of the lending borrowing facility and would be taking steps to make this mechanism more effective.”

India hit by ripple effects of global financial crisis: FM

Confident of achieving 7-8 per cent economic growth
Banks have little exposure to sub-prime lending
Sound fundamentals of country’s financial system

NEW DELHI: Finance Minister P. Chidambaram on Monday maintained that India was only experiencing the ripple effects of the global financial crisis without any direct impact on its economy which would succeed in growing by close to eight per cent during the current fiscal.
Speaking at a function to mark the completion of 50 years of Indo-German bilateral development cooperation here, he pointed out that even the most pessimistic estimates have projected a growth rate of not less than seven per cent. “But I am confident that the economy will grow between seven and eight per cent,” he said.
Elaborating as to why he hoped that the Indian economy would grow at an average of over eight per cent despite the global slowdown, Mr. Chidambaram said: “The global financial crisis will not directly affect India as Indian financial system has sound fundamentals and the Indian Government has put in place, systems and practices to promote a safe, transparent and efficient market to protect market integrity. Most of the Indian banks have negligible exposure to sub-prime lending.”
The Finance Minister, however, conceded that the cash crunch prevailing in the world would certainly affect the country’s financial markets indirectly, though at a limited scale.
“Credit crunch that the world faces has also impacted us. We have taken a series of measures to infuse greater liquidity and to restart the process of credit…We are moving at a calibrated pace. Our banking system is very strong and our banks are well capitalised and well regulated,” he said.
Echoing similar sentiment at a function organised by Controller General of Accounts (CGA) here, Minister of State for Finance Pawan Kumar Bansal noted that owing to the strong fundamentals of the Indian economy, the Government would be able to ward off the adverse impact of the global slowdown through swift actions. “The government will remain vigilant and take a quick action wherever required,” he said.
Mr. Bansal pointed out that one of the biggest challenges in the medium-to-long term would be to effectively sustain the high growth rate witnessed in recent years.
This, he said, would necessitate development of diverse, regionally balanced, physical and social infrastructure for which there was a need to find ways and means to mobilise resources and complete infrastructure projects without any cost or time overruns.

Wednesday, September 10, 2008


The Large Hadron Collider

Our understanding of the Universe is about to change...

The Large Hadron Collider (LHC) is a gigantic scientific instrument near Geneva, where it spans the border between Switzerland and France about 100 m underground. It is a particle accelerator used by physicists to study the smallest known particles – the fundamental building blocks of all things. It will revolutionise our understanding, from the minuscule world deep within atoms to the vastness of the Universe.

Two beams of subatomic particles called 'hadrons' – either protons or lead ions – will travel in opposite directions inside the circular accelerator, gaining energy with every lap. Physicists will use the LHC to recreate the conditions just after the Big Bang, by colliding the two beams head-on at very high energy. Teams of physicists from around the world will analyse the particles created in the collisions using special detectors in a number of experiments dedicated to the LHC.

There are many theories as to what will result from these collisions, but what's for sure is that a brave new world of physics will emerge from the new accelerator, as knowledge in particle physics goes on to describe the workings of the Universe. For decades, the Standard Model of particle physics has served physicists well as a means of understanding the fundamental laws of Nature, but it does not tell the whole story. Only experimental data using the higher energies reached by the LHC can push knowledge forward, challenging those who seek confirmation of established knowledge, and those who dare to dream beyond the paradigm.

Why the LHC

A few unanswered questions...

The LHC was built to help scientists to answer key unresolved questions in particle physics. The unprecedented energy it achieves may even reveal some unexpected results that no one has ever thought of!

For the past few decades, physicists have been able to describe with increasing detail the fundamental particles that make up the Universe and the interactions between them. This understanding is encapsulated in the Standard Model of particle physics, but it contains gaps and cannot tell us the whole story. To fill in the missing knowledge requires experimental data, and the next big step to achieving this is with LHC.

Newton's unfinished business...

What is mass?

What is the origin of mass? Why do tiny particles weigh the amount they do? Why do some particles have no mass at all? At present, there are no established answers to these questions. The most likely explanation may be found in the Higgs boson, a key undiscovered particle that is essential for the Standard Model to work. First hypothesised in 1964, it has yet to be observed.

The ATLAS and CMS experiments will be actively searching for signs of this elusive particle.

An invisible problem...

What is 96% of the universe made of?

Everything we see in the Universe, from an ant to a galaxy, is made up of ordinary particles. These are collectively referred to as matter, forming 4% of the Universe. Dark matter and dark energy are believed to make up the remaining proportion, but they are incredibly difficult to detect and study, other than through the gravitational forces they exert. Investigating the nature of dark matter and dark energy is one of the biggest challenges today in the fields of particle physics and cosmology.

The ATLAS and CMS experiments will look for supersymmetric particles to test a likely hypothesis for the make-up of dark matter.

Nature's favouritism...

Why is there no more antimatter?

We live in a world of matter – everything in the Universe, including ourselves, is made of matter. Antimatter is like a twin version of matter, but with opposite electric charge. At the birth of the Universe, equal amounts of matter and antimatter should have been produced in the Big Bang. But when matter and antimatter particles meet, they annihilate each other, transforming into energy. Somehow, a tiny fraction of matter must have survived to form the Universe we live in today, with hardly any antimatter left. Why does Nature appear to have this bias for matter over antimatter?

The LHCb experiment will be looking for differences between matter and antimatter to help answer this question. Previous experiments have already observed a tiny behavioural difference, but what has been seen so far is not nearly enough to account for the apparent matter–antimatter imbalance in the Universe.

Secrets of the Big Bang

What was matter like within the first second of the Universe’s life?

Matter, from which everything in the Universe is made, is believed to have originated from a dense and hot cocktail of fundamental particles. Today, the ordinary matter of the Universe is made of atoms, which contain a nucleus composed of protons and neutrons, which in turn are made of quarks bound together by other particles called gluons. The bond is very strong, but in the very early Universe conditions would have been too hot and energetic for the gluons to hold the quarks together. Instead, it seems likely that during the first microseconds after the Big Bang the Universe would have contained a very hot and dense mixture of quarks and gluons called quark–gluon plasma.

The ALICE experiment will use the LHC to recreate conditions similar to those just after the Big Bang, in particular to analyse the properties of the quark-gluon plasma.

Hidden worlds…

Do extra dimensions of space really exist?

Einstein showed that the three dimensions of space are related to time. Subsequent theories propose that further hidden dimensions of space may exist; for example, string theory implies that there are additional spatial dimensions yet to be observed. These may become detectable at very high energies, so data from all the detectors will be carefully analysed to look for signs of extra dimensions.

How the LHC works

The LHC, the world’s largest and most powerful particle accelerator, is the latest addition to CERN’s accelerator complex. It mainly consists of a 27 km ring of superconducting magnets with a number of accelerating structures to boost the energy of the particles along the way.

Inside the accelerator, two beams of particles travel at close to the speed of light with very high energies before colliding with one another. The beams travel in opposite directions in separate beam pipes – two tubes kept at ultrahigh vacuum. They are guided around the accelerator ring by a strong magnetic field, achieved using superconducting electromagnets. These are built from coils of special electric cable that operates in a superconducting state, efficiently conducting electricity without resistance or loss of energy. This requires chilling the magnets to about ‑271°C – a temperature colder than outer space! For this reason, much of the accelerator is connected to a distribution system of liquid helium, which cools the magnets, as well as to other supply services.

Thousands of magnets of different varieties and sizes are used to direct the beams around the accelerator. These include 1232 dipole magnets of 15 m length which are used to bend the beams, and 392 quadrupole magnets, each 5–7 m long, to focus the beams. Just prior to collision, another type of magnet is used to 'squeeze' the particles closer together to increase the chances of collisions. The particles are so tiny that the task of making them collide is akin to firing needles from two positions 10 km apart with such precision that they meet halfway!

All the controls for the accelerator, its services and technical infrastructure are housed under one roof at the CERN Control Centre. From here, the beams inside the LHC will be made to collide at four locations around the accelerator ring, corresponding to the positions of the particle detectors.





Wednesday, July 2, 2008

What is TOEFL?

What is TOEFL?

The Test Of English as a Foreign Language (or TOEFL , pronounced "toe-full") evaluates the potential success of an individual to use and understand standard American English at a college level. It is required for non-native applicants at many US and other English-speaking colleges and universities. The TOEFL is the product of the Educational Testing Service (ETS), which is contracted by the private, non-profit firm, the College Board to administer the test in institutions in the US; they also produce the SAT.

Where Can I Take the TOEFL TEST?

The test is usually taken on a computer in a test center, although paper versions are available where it is not possible to take it this way. TOEFL is administered worldwide.

What is the TOEFL CBT?

The Computer Based Test for TOEFL called the CBT , is an adaptive test; meaning that your next question's difficulty level depends on the correctness of your response to the current question. This helps TOEFL to grade the person's knowledge on the English language; by assuming him/her to be of an average capability at the beginning of the test, and with the responses received at the every question the program decides to give you a tougher or easier question based on whether your question was answered correctly or not. The CBT follows computer adaptive test strategy for the Listening and Structure section alone. The reading comprehension and Essay writing are not computer adaptive.

What Does the TOEFL Test Include?

The test consists of four sections:

  • Section I: Listening Comprehension
  • Section II: Structure and Written Expression
  • Section III: Reading Comprehension and Vocabulary
  • Section IV: Essay Writing

Why take the TOEFL® Test?

The TOEFL test gives you more choices about where you want to study.

  • TOEFL is accepted by more institutions than any other English-language test in the world — including the top colleges and universities.
  • See a list of 6,000+ institutions in 110 countries (PDF), including almost every university in the USA, UK, Australia, New Zealand and Canada, that rely on TOEFL scores for admissions, scholarship and graduation decisions.

The TOEFL test gives you more convenience and flexibility.

  • The entire test is taken in one day, which saves you travel time and costs. And, there are more than 4,000 test centers to choose from.
  • You can retake the test in just 7 days, if you want to improve your scores.

The TOEFL test gives you the skills you need to communicate in real-life, academic situations.

  • In the classroom and on campus, you will be able to communicate your ideas effectively.
  • Listen to lectures, read textbooks and online research, write academic papers and e-mails, and speak with other students and professors.

The TOEFL test is fair and accurate.

  • All test takers have a similar test-taking experience, which eliminates the inconsistency of interviews that could negatively impact your scores.
  • Scores are objective and unbiased. Tests are scored anonymously by ETS-certified experts.

INDIA’S MOON MISSION

INDIA’S MOON MISSION: Mission of Possibilities

In a bid to emerge as a global space power India plans an ambitious lunar launch that will boost its technological capability and ignite popular imagination. But there are still many naysayers.

On many of his evening walks in Bangalore, K. Kasturirangan gets a magnificent view of a rising full moon. Surprisingly, the spirited chairman of the Indian Space Research Organization (ISRO) admits that he rarely stops to admire the celestial spectacle. Having studied how the earth's closest astral neighbour is a dark grey, barren, crater-ridden spherical mass, he has long since shed any romantic notions about it. Of late, though, he says he does pause to stare at the moon, but more to size up the challenge that he plans to set for the nation. This week, following months of internal and external debate, Kasturirangan will put together a special team that will study the feasibility of ISRO going where no Indian has gone before: the moon.

In the next six months the team will wrestle with the details of launching such a mission, including its cost-effectiveness and the areas in which Indian scientists can significantly add to the mountain of knowledge that has already been collected about the moon. It will form the basis of a project report that ISRO will submit to the Central Government for approval. The objective: to have an Indian lunar mission sent up by 2005. "As a motivator, it will electrify the nation," Kasturirangan explained to INDIA TODAY last week. "If we go ahead, it will demonstrate to the world that India is capable of taking up a complex mission that is at the cutting edge of space.

In close to three decades of its existence, ISRO has never attempted anything as ambitious. It has so far built a dozen sophisticated satellites for communications, weather prediction and mapping natural resources. For instance, Doordarshan programmes are transmitted via INSAT channels. In rocketry, its top-of-the-line Polar Satellite Launch Vehicle (PSLV) can punch a satellite the size and weight of a Maruti car into an orbit 1,000 km in space. Later this year, it will test a far more powerful launcher, capable of placing a satellite into an orbit of around 36,000 km. But the moon at 3,84,467 km from the earth is still 10 times further than any distance that ISRO has attempted.

Given its current technological capability, the budgetary constraints and the time frame of five years it has set for itself, the organisation is clearly planning a modest first launch. Lunar buffs may be disappointed that India initially may not look at landing a man on the moon. What has emerged as the best option is a lunar orbiter bristling with an array of sophisticated cameras and measuring instruments that would circle the moon for several years and conduct a series of experiments.

To do this, apart from building such a hi-tech craft, ISRO would have to augment its rocketry and master the intricate and difficult task of navigating it over such a great distance and controlling it for several years. Although the moon appears like a giant football in the sky, getting a spacecraft to rendezvous with it is likened to hitting a one rupee coin placed at a distance of 25 km with a bullet from a rifle.

Yet the very nature of India's quest has already ignited fierce debate in scientific circles. Especially given that after the Soviet's Luna 2 became the first spacecraft to "impact" on its surface in 1959, the moon has been the most studied object in the solar system -- 97 per cent of its surface has already been mapped. The US stopped its man-on-the-moon programme three years after Apollo 11's historic landing in 1969. The Soviets, who were beaten in the race to the moon by the US, stopped sending orbiters to it since 1976. By then close to 382 kg of moon rock had been brought back to earth by various Apollo and Luna missions, giving scientists ample samples for research. The US and the Soviet Union then turned to exploring other planets in the solar system. Only in the '90s did interest resurface with the Japanese sending its Hiten orbiter, followed by the US-built Clementine and last year by the Lunar Prospector.

For these reasons many Indian scientists sneer at ISRO's attempt to "reinvent the wheel". Professor H.S. Mukunda, chairman, aerospace engineering department, Indian Institute of Science, Bangalore, says bluntly: "It is the stupidest thing to do. What others did 30 years ago, we are trying to do now. It won't bring the country any technical benefit." Mukunda instead wants ISRO to go commercial by specialising in low-cost access to space by providing the cheapest launchers in the business.

Some senior scientists also feel that the Space Department hasn't as yet fulfilled its basic objectives of collecting and transmitting accurate information about the country's resources. Data received from its remote-sensing satellites pile up unutilised though it's no fault of ISRO -- institutions to process them have still not been adequately set up. But with ISRO's limited budget, the scientists point out, it cannot afford to spend money on research and development that has no direct operational use. Instead, the money should be spent on building superior satellites.

They do have a point. Although ISRO already has six communications satellites orbiting the earth, the 80 transponders they provide form only half the projected demand. There is also a battle raging over whether building satellites should be the sole preserve of ISRO. Many private agencies feel that the space department has been too slow in perfecting its capability and either needs to speed up its act or get out of the way. They regard the moon mission as a "foolhardy" distraction.

Realising that its lunar plans were bound to raise controversy, ISRO scientists in the past year have been working quietly to build support for it. Last October, at the annual meeting of the Indian Academy of Sciences, they requested a special session and briefed the country's top scientists on their mission for three hours. Professor Narendra Kumar, director, Raman Research Institute and current president of the Indian Academy of Sciences, came out convinced that ISRO was on the right trajectory. Later he elaborated: "There is no doubt the spin-off technology is enormous. We will push our rocketry, processing systems and communications to the limits of their capability. Such a mission becomes a major point of convergence for frontier technology."

There is little doubt about the tremendous hi-tech bonanza that the Apollo and Luna missions have bes-towed on the world. Whether in the development of sophisticated error-free computers, light-weight batteries or advanced composites that strengthen tennis rackets. Moreover, the mid-'90s has seen a major renewal of interest in lunar exploration. In 1998, the Lunar Prospector made the most tantalising discovery that there is water-ice in some of the moon's craters. Though much more research has to be done to confirm the findings, it holds the possibility of humans not only colonising the moon, but also using it as a base station for future outer-space missions. Currently carting a litre of water from the earth to be used by astronauts costs close to $22,000 (Rs 9.68 lakh).

There have been other discoveries on its surface that have kindled interest, especially the presence of an abundance of helium 3 that is regarded as one of the cleanest fuels but is found in sparse quantities on the earth. With technology being developed to harness the gas to generate power, the moon holds enormous potential for earthlings. All these developments have seen several nations dusting their moon plans. Apart from the US, the European Space Agency is now planning a major expedition to the moon and has long-term plans of setting up a space station. Just as in Antarctica, everyone is suddenly eager to get a share of the pie.

Scientifically too, the moon holds many unanswered mysteries. With no atmosphere and not much geological churning going on, the moon's surface rocks are said to be 4.6 billion years old or around the age of the solar system. For researchers, it is akin to looking at the pristine state of the early universe through the lunar lens. ISRO anticipates that in the next decade or so, there would be international co-operation to speed up the exploration and exploitation of the moon's resources and would like to be part of the pack.

Perhaps the major reason that ISRO is attempting such a launch is that it is eminently do-able. Says S. Rangarajan, Satcom programme chief who will be the mission coordinator: "We already have the heritage in terms of the spacecraft needed. Now all we need to do is optimize its performance." In rocketry, for instance, there are no major modifications to be made to the PSLV. At best, its fourth-stage rocket has to be tanked up with 10 per cent more fuel, points out V. Adimurthy, group director, Aerospace Flight Dynamics at ISRO's Vikram Sarabhai Space Centre (VSCC) in Thiruvananthapuram.

Adimurthy, a part of the feasibility team, is in charge of souping up the PSLV to meet the lunar module's long-distance journey that is expected to take five days. In a normal flight, the PSLV ejects its payload of 1 tonne within 11 minutes of lift off. But in the modified version that Adimurthy is designing, the payload, which will be a lunar orbiter, will weigh only around 350 kg. That saving in weight will allow the last-stage motor carrying the orbiter to travel at times at superfast speeds of 28,800 km per hour needed to break free of the earth's clutches and put it on course for a lunar tryst. The real challenge will come in precisely navigating the spacecraft throughout its 120-hour journey to the moon and tracking it thereafter.

The orbiter itself will be designed and built at the ISRO Satellite Centre in Bangalore. Says P.S. Goel, the centre's director who is likely to head the team: "There is nothing fundamental that we have not already done." They do need to build sophisticated instruments such as spectrometers, reflectometers and stereoscopic cameras that will collect and process an array of data from the moon's surface as the orbiter regularly goes around it and transmits the information back to earth. Lunar expert N. Bhandari, a senior professor at ISRO's Physical Research Laboratory in Ahmedabad, is chalking out a range of experiments that Indians can do including studying such curious phenomenon as unexplained levitation of dust in the airless lunar environment and also exploring the possibility of water in the moon.

Sunday, June 22, 2008

Nightmare for India- Inflation hits Double Digits


NIGHTMARE FOR INDIA- INFLATION HITS DOUBLE DIGITS

NEW DELHI: The rate of inflation in India has galloped to a 13-year high to 11.05 per cent for the week ended June 7, confounding the worst fears of the United Progressive Alliance Government as general elections loom. This has been caused mainly by the June 5 increases in fuel prices and its cascading effect on all food commodities and other manufactured items, such as consumer durable goods and steel.

The unexpected spurt in the wholesale price index-based inflation from 8.75 per cent in the previous week evoked sharp criticism from all political parties, including the UPA’s coalition partners and Left allies, of the government’s failure to hold the price line and sustain the benefits of high growth.

Reserve Bank of India data show that the last time inflation was in double digits was in April-May 1995 when it ruled above 11 per cent.

Resignation demand

The Bharatiya Janata Party and the Left parties slammed the government. They sought Finance Minister P. Chidambaram’s exit for his “faulty” fiscal and other policy measures. These measures were a “total failure” in reining in inflation, they said.

Driven to the wall, the Congress, too, called for “hard steps” to contain the increase in prices even at the risk of lower economic growth.

While announcing the hike in fuel prices, the government had projected an inflationary fallout to the extent of 0.5 per cent to 0.6 per cent. Even as the complete lag effect of the fuel price decision is yet to become manifest, a seemingly dejected Mr. Chidambaram on Friday noted that a price spiral of this magnitude was anticipated when the government decided to increase fuel prices.

Holding out a promise to take stronger steps to douse inflationary expectations and hoping that the people would understand the government’s predicament, the Finance Minister said: “When the administered prices of petrol, diesel and LPG were increased, we had cautioned the Cabinet that inflation would touch double digit and that is what has happened. These are difficult times. The government is aware of difficulties... Naturally, we will have to look at stronger measures on demand and monetary sides and try to improve supply side also.”

Dear loans in prospect

Mr. Chidambaram did not elaborate on the inflation-control measures that are under consideration. But the general apprehension is that of yet another bout of monetary policy tightening by the RBI — which could lead to increases in lending rates with respect to automobile, housing and consumer loans.

The effect of the price spurt was seen on the bourses on Friday. The BSE sensitive index (Sensex) tanked over 350 points in intra-day trading and sank further to close 517 points lower at 14,571. All sectoral indices plummeted; banking shares were particularly mauled.

Inflation is no stranger to the Indian economy. In fact, till the early nineties Indians were used to double-digit inflation and its attendant consequences. But, since the mid-nineties controlling inflation has become a priority for policy framers.

The natural fallout of this has been that we, as a nation, have become virtually intolerant to inflation. While inflation till the early nineties was primarily caused by domestic factors (supply usually was unable to meet demand, resulting in the classical definition of inflation of too much money chasing too few goods), today the situation has changed significantly.

Inflation today is caused more by global rather than by domestic factors. Naturally, as the Indian economy undergoes structural changes, the causes of domestic inflation too have undergone tectonic changes.

Needless to emphasize, causes of today's inflation are complicated. However, it is indeed intriguing that the policy response even to this day unfortunately has been fixated on the traditional anti-inflation instruments of the pre-liberalization era.

Global imbalance the cause for global liquidity

To understand the text of the present bout of inflation, let us at the outset understand the context: the functioning of the global economy, which is in a state of extreme imbalance. This is simply because developed western economies, particularly the United States, are consuming on a massive scale leading to gargantuan trade deficits.

Crucially their extreme levels of consumption and imports are matched by the proclivity, nay fetish, of the developing countries in having an export-driven economic model. Thus while a set of developing countries produces, exports and also saves the proceeds by investing their forex reserves back in these countries, developed countries are consuming both the production and investment originating from the developing countries.

In effect, developing countries are building their foreign exchange reserves while the developed countries are accumulating the corresponding debt. After all, it takes two to a tango.

For instance, the US current account deficit is estimated to be 7 per cent of GDP in 2006 and stood at approximately $900 billion. Obviously, the current account deficit of the US becomes the current account surplus of other exporting countries, viz. China, Japan and other oil producing and exporting countries.

The reason for this imbalance in the global economy is the fact that after the Asian currency crisis; many countries found the virtues of a weak currency and engaged in 'competitive devaluation.'

Under this scenario, many countries simply leveraged their weak currency vis-à-vis the US dollar to gain to the global (read US) markets. This mercantilist policy to maintain their competitiveness is achieved when their central banks intervenes in the currency markets leading to accumulation of foreign exchange, notably the US dollar, against their own currency.

Implicitly it means that the developing world is subsidizing the rich developed world. Put more bluntly, it would mean that the US has outsourced even defending the dollar to these countries, as a collapse of the US currency would hurt these countries holding more dollars in reserves than perhaps the US itself!

In this connection, commenting on the above phenomenon in the Power and Interest News Report, Jephraim P Gundzik wrote that the world growth "was hardly sufficient to be behind the further rise of commodity prices in the first five months of this year (i.e. in 2006). Rather than demand pushing the value of commodities higher in the past 18 months, it has been the (impending) dollar's devaluation against commodities that has pushed commodity prices to record highs."

Naturally, as the players fear a fall in the value of the dollar and reach out to various assets and commodities, the prices of these commodities and assets too will rise.

The psychological dimension

But as the imbalance shows no sign of correcting, players seek to shift to commodities and assets across continents to hedge against the impending fall in the US dollar. Thus, it is a fight between central banks and the psychology of market players across continents.

As a corrective measure, economists are coming to the conclusion that most of the currencies across the globe are highly undervalued vis-à-vis the dollar, which, in turn, requires a significant dose of devaluation. For instance, a consensus exists amongst economists and currency traders that the Yen is one of the most highly undervalued currencies (estimated at around 60%) along with the Chinese Yuan (estimated at 50%) followed by other countries in Asia.

This artificial undervaluation of currencies is another fundamental cause for increasing global liquidity.

To get an idea of the enormity of the aggregation of these two factors on the world's supply of dollars, Jephraim P. Gundzik calculates the dollar value of rising prices of just one commodity -- crude oil.

In 2004, global demand for crude oil grew by a mere four per cent. Nevertheless higher oil prices advanced by as much as 34 per cent. Consequently, it is this factor that significantly contributed to increase the world's dollar supply by about $330 billion.

In 2005, international crude oil prices gained another 35 per cent and global demand for oil grew by only 1.6 per cent. Nonetheless, the world's supply of dollars increased by a further $460 billion.

Naturally, with all currencies refusing to be revalued, this leads to increased global liquidity. While one is not sure as to whether the increase in the prices of crude led to the increase of other commodities or vice versa, the fact of the matter is that, in the aggregate, increased liquidity has led to the increase in commodity prices as a whole.

Although some of this increase in the world's supply of dollars has been reabsorbed into US economy by the twin American deficits -- current as well as budgetary -- it is estimated that as much as $600 billion remains outside the US.

What has further compounded the problem is the near-zero interest rate regime in Japan. With almost $905 billion forex reserves, it makes sense to borrow in Japan at such low rates and invest elsewhere for higher returns. Obviously, some of this money -- estimated by experts to be approximately $200 billion -- has undoubtedly found its way into the asset markets of other countries.

Most of it has been parked in alternative investments such as commodities, stocks, real estates and other markets across continents, leveraged many times over. Needless to reiterate, the excessive dollar supply too has fuelled the property and commodity boom across markets and continents.

The twin causes -- excessive liquidity due to undervaluation of various currencies (technical) and fear of the US dollar collapse leading to increased purchase of various commodities to hedge against a fall in US dollar (psychological) -- needs to be tackled upfront if inflation has to be confronted globally.

Higher international farm prices impact Indian farm prices

What actually compounds the problem for India is the fact that lower harvest worldwide, specifically in Australia and Brazil, and the overall strength of demand vis-à-vis supply and low stock positions world over, global wheat prices have continued to rise.

Wheat demand is expected to rise, while world production is expected to decline further in the coming months, as a result of which global stocks, already at historically low levels, may fall further by 20 per cent. These global trends have put upward pressure on domestic prices of wheat and are expected to continue to do so during the course of this year.

No wonder, despite the government lowering the import tariffs on wheat to zero, there has been no significant quantity of wheat imports as the international prices of wheat are higher than the domestic prices.

Growth and forex flows

Another cause for the increase in the prices of these commodities has been due to the fact that both India and China have been recording excellent growth in recent years. It has to be noted that China and India have a combined population of 2.5 billion people.

Given this size of population even a modest $100 increase in the per capita income of these two countries would translate into approximately $250 billion in additional demand for commodities. This has put an extraordinary highly demand on various commodities. Surely growth will come at a cost.

The excessive global liquidity as explained above has facilitated buoyant growth of money and credit in 2005-06 and 2006-07. For instance, the net accretion to the foreign exchange reserves aggregates to in excess of $50 billion (about Rs 225,000 crore) in 2006-07. Crucially, this incremental flow of foreign exchange into the country has resulted in increased credit flow by our banks. Naturally this is another fuel for growth and crucially, inflation.

This Reserve Bank of India's strategy of dealing with excessive liquidity through the Market Stabilization Scheme (MSS) has its own limitations. Similarly, the increase in repo rates (ostensibly to make credit overextension costly) and increase in CRR rates (to restrict excessive money supply) are policy interventions with serious limitations in the Indian context with such huge forex inflows.

How about the revaluation of the Indian Rupee?

To conclude, all these are pointers to a need for a different strategy. The current bout of inflation is caused by a multiplicity of factors, mostly global and is structural. Monetary as well as trade policy responses, as has been attempted till date, would be inadequate to deal with the extant issue effectively.

Crucially, a stock market boom, a real estate boom and a benign inflation in the food grains market is an economic impossibility.

It has to be noted that the Indian market is structurally suited for leveraging shortages rather effectively. Added to this is the information asymmetry among various class of consumers as well as between consumers, on the one hand, and producers and consumers, on the other.

Further, the sustained flow of foreign money, thanks to the excessive global liquidity in the world, has fuelled the rise of the stock markets and real estate prices in India to unprecedented levels.

This boom has naturally led to corresponding booms in various related markets as much as the increased credit flow has in a way resulted in overall inflation.

Economic policy rests in the triumvirate of fiscal, monetary and trade policies. Theoretical understanding of economics meant that these policies are interdependent.

Also, one needs to understand that growth naturally comes with its attendant costs and consequences. While these policies are usually intertwined and typically compensatory, one has to understand that the issues with respect to inflation cannot be subjected to conventional wisdom in the era of globalization.

One policy route yet unexamined in the Indian context by the government is the exchange rate policy, especially revaluation of the Rupee as an instrument to control inflation.

It is time that we think about a revaluation of the Indian Rupee as a policy response to the complex issue of managing inflation; while simultaneously address the constraints on the supply side on food grains through increase in domestic production.

A higher Rupee value vis-à-vis the dollar would mean lower purchase price of commodities in Rupee terms. The Indian economy has undergone significant changes in the past decade and a half. With increased linkages to the global economy, it cannot duck the negatives of globalization.

Quite the contrary, it needs to come with appropriate policy responses for the same, which cannot be of the 1960s vintage. Allowing Rupee to appreciate is surely one of them. The time for a rethink on our exchange rate policy to tackle inflation is now. Are we ready?