Tuesday 7 August 2018

Indian Regional Navigation Satellite System (IRNSS) : NavIC

IRNSS is an independent regional navigation satellite system being developed by India. It is designed to provide accurate position information service to users in India as well as the region extending up to 1500 km from its boundary, which is its primary service area. An Extended Service Area lies between primary service area and area enclosed by the rectangle from Latitude 30 deg South to 50 deg North, Longitude 30 deg East to 130 deg East.


IRNSS will provide two types of services, namely, Standard Positioning Service (SPS) which is provided to all the users and Restricted Service (RS), which is an encrypted service provided only to the authorised users. The IRNSS System is expected to provide a position accuracy of better than 20 m in the primary service area.


Some applications of IRNSS are:
  • Terrestrial, Aerial and Marine Navigation
  • Disaster Management
  • Vehicle tracking and fleet management
  • Integration with mobile phones
  • Precise Timing
  • Mapping and Geodetic data capture
  • Terrestrial navigation aid for hikers and travellers
  • Visual and voice navigation for drivers
The space segment consists of the IRNSS constellation of eight satellites, NavIC. Three satellites are located in suitable orbital slots in the geostationary orbit and the remaining four are located in geosynchronous orbits with the required inclination and equatorial crossings in two different planes. All the satellites of the constellation are configured identically. The satellites are configured with I-1K Bus to be compatible for launch on-board PSLV.

(Source: https://www.isro.gov.in/irnss-programme)

Monday 13 February 2017

Difference between The IMF and the World Bank ?


If you have difficulty distinguishing the World Bank from the International Monetary Fund, you are not alone. Most people have only the vaguest idea of what these institutions do, and very few people indeed could, if pressed on the point, say why and how they differ. Even John Maynard Keynes, a founding father of the two institutions and considered by many the most brilliant economist of the twentieth century, admitted at the inaugural meeting of the International Monetary Fund that he was confused by the names: he thought the Fund should be called a bank, and the Bank should be called a fund. Confusion has reigned ever since.

The fundamental difference is this: the Bank is primarily a development institution; the IMF is a cooperative institution that seeks to maintain an orderly system of payments and receipts between nations. Each has a different purpose, a distinct structure, receives its funding from different sources, assists different categories of members, and strives to achieve distinct goals through methods peculiar to itself.

The World Bank is an investment bank, inter-mediating between investors and recipients, borrowing from the one and lending to the other. Its owners are the governments of its 180 member nations with equity shares in the Bank, which were valued at about $176 billion in June 1995. The IBRD obtains most of the funds it lends to finance development by market borrowing through the issue of bonds (which carry an AAA rating because repayment is guaranteed by member governments) to individuals and private institutions in more than 100 countries. It also borrows money by selling bonds and notes directly to governments, their agencies, and central banks. The proceeds of these bond sales are lent in turn to developing countries at affordable rates of interest to help finance projects and policy reform programs that give promise of success.

The IMF is not a bank and does not intermediate between investors and recipients. Nevertheless, it has at its disposal significant resources, presently valued at over $215 billion. These resources come from quota subscriptions, or membership fees, paid in by the IMF's 182 member countries. Each member contributes to this pool of resources a certain amount of money proportionate to its economic size and strength (richer countries pay more, poorer less). While the Bank borrows and lends, the IMF is more like a credit union whose members have access to a common pool of resources (the sum total of their individual contributions) to assist them in times of need. Although under special and highly restrictive circumstances the IMF borrows from official entities (but not from private markets), it relies principally on its quota subscriptions to finance its operations. The adequacy of these resources is reviewed every five years.

The World Bank exists to encourage poor countries to develop by providing them with technical assistance and funding for projects and policies that will realize the countries' economic potential. The Bank views development as a long-term, integrated endeavor. It gives particular attention to projects that can directly benefit the poorest people in developing countries. The direct involvement of the poorest in economic activity is being promoted through lending for agriculture and rural development, small-scale enterprises, and urban development. The Bank is helping the poor to be more productive and to gain access to such necessities as safe water and waste-disposal facilities, health care, family-planning assistance, nutrition, education, and housing. Within infrastructure projects there have also been changes. In transportation projects, greater attention is given to constructing farm-to-market roads. Rather than concentrating exclusively on cities, power projects increasingly provide lighting and power for villages and small farms. Industrial projects place greater emphasis on creating jobs in small enterprises. Labor-intensive construction is used where practical. In addition to electric power, the Bank is supporting development of oil, gas, coal, fuelwood, and biomass as alternative sources of energy.

To illustrate the operation of IMF, let us take the example of a small country whose economy is based on agriculture. For convenience in trade, the government of such a country generally pegs the domestic currency to a convertible currency: so many units of domestic money to a U.S. dollar or French franc. Unless the exchange rate is adjusted from time to time to take account of changes in relative prices, the domestic currency will tend to become overvalued, with an exchange rate, say, of one unit of domestic currency to one U.S. dollar, when relative prices might suggest that two units to one dollar is more realistic. Governments, however, often succumb to the temptation to tolerate overvaluation, because an overvalued currency makes imports cheaper than they would be if the currency were correctly priced.
The other side of the coin, unfortunately, is that overvaluation makes the country's exports more expensive and hence less attractive to foreign buyers. If the currency is thus overvalued, the country will eventually experience a fall-off in export earnings (exports are too expensive) and a rise in import expenditures (imports are apparently cheap and are bought on credit). In effect, the country is earning less, spending more, and going into debt, a predicament as unsustainable for a country as it is for any of us. Moreover, this situation is usually attended by a host of other economic ills for the country. Finding a diminished market for their export crops and receiving low prices from the government marketing board for produce consumed domestically, farmers either resort to illegal black market exports or lose the incentive to produce. Many of them abandon the farm to seek employment in overcrowded cities, where they become part of larger social and economic problems. Declining domestic agricultural productivity forces the government to use scarce foreign exchange reserves (scarce because export earnings are down) to buy food from abroad. The balance of payments becomes dangerously distorted.

As an IMF member, a country finding itself in this bind can turn to the IMF for consultative and financial assistance. In a collaborative effort, the country and the IMF can attempt to root out the causes of the payments imbalance by working out a comprehensive program that, depending on the particulars of the case, might include raising producer prices paid to farmers so as to encourage agricultural production and reverse migration to the cities, lowering interest rates to expand the supply of credit, and adjusting the currency to reflect the level of world prices, thereby discouraging imports and raising the competitiveness of exports.

Because reorganizing the economy to implement these reforms is disruptive and not without cost, the IMF will lend money to subsidize policy reforms during the period of transition. To ensure that this money is put to the most productive uses, the IMF closely monitors the country's economic progress during this time, providing technical assistance and further consultative services as needed.
In addition to assisting its members in this way, the IMF also helps by providing technical assistance in organizing central banks, establishing and reforming tax systems, and setting up agencies to gather and publish economic statistics. The IMF is also authorized to issue a special type of money, called the SDR, to provide its members with additional liquidity.

Measuring the success of the IMF's operations over the years is not easy, for much of the IMF's work consists in averting financial crises or in preventing their becoming worse.

The Bank and the IMF have distinct mandates that allow them to contribute, each in its own way, to the stability of the international monetary and financial system and to the fostering of balanced economic growth throughout the entire membership. Since their founding 50 years ago, both institutions have been challenged by changing economic circumstances to develop new ways of assisting their membership. The Bank has expanded its assistance from an orientation toward projects to the broader aspects of economic reform. Simultaneously the IMF has gone beyond concern with simple balance of payment adjustment to interest itself in the structural reform of its members' economies. Some overlapping by both institutions has inevitably occurred, making cooperation between the Bank and the IMF crucial. Devising programs that will integrate members' economies more fully into the international monetary and financial system and at the same time encourage economic expansion continues to challenge the expertise of both Bretton Woods Institutions.

Friday 10 February 2017

What India Nobel Laureate and Economist Amartya Sen has to say on Demonetisation.

Nobel Laureate Amartya Sen has called the Narendra Modi government’s demonetisation move “despotic action that has struck at the root of economy based on trust.”
“It (demonetisation) undermines notes, it undermines bank accounts, it undermines the entire economy of trust. That is the sense in which it is despotic,” Prof. Sen told to a TV channel.
He further said his immediate point of view on demonetisation is on its economic aspect.
“It’s (demonetisation) a disaster on economy of trust. In the last 20 years, the country has been growing very fast. But it is all based on acceptance of each other’s word. By taking despotic action and saying we had promised but won’t fulfil our promise, you hit at the root of this,” Prof. Sen said.
Noting that capitalism has many successes that have come from having trust in businesses, he said if a government promises in promissory notes and breaks such promise, then it is a despotic act.
“I am not a great admirer of capitalism. On the other hand, capitalism has many successes... It’s despotic in the sense that if a government promises in promissory note that when given, we will give you this amount of compensation for it and to break such a promise is a despotic action,” Sen, who is currently Thomas W Lamont University Professor at Harvard University, said.
The demonetisation issue has also rocked Parliament as both Houses have been witnessing disruptions and adjournments due to noisy protests by Opposition parties for the past several days.

Wednesday 8 February 2017

Speech by Pandit Jawarharlal Nehru on 15th August, 1947 at 12 in the night from Red Fort, Delhi.

Long years ago we made a tryst with destiny, and now that time comes when we shall redeem our pledge, not wholly or in full measure, but very substantially. At the stroke of the midnight hour, when the world sleeps, India will awake to life and freedom. A moment comes, which comes but rarely in history, when we step out from the old to new, when an age ends, and when the soul of a nation, long suppressed, finds utterance.

It is fitting that at this solemn moment we take the pledge of dedication to the service of India and her people and to the still larger cause of humanity with some pride.

At the dawn of history India started on her unending quest, and trackless centuries which are filled with her striving and the grandeur of her successes and her failures. Through good and ill fortunes alike she has never lost sight of that quest or forgotten the ideals which gave her strength. We end today a period of ill fortunes and India discovers herself again.

The achievement we celebrate today is but a step, an opening of opportunity, to the greater triumphs and achievements that await us. Are we brave enough and wise enough to grasp this opportunity and accept the challenge of the future?

Freedom and power bring responsibility. That responsibility rests upon this assembly, a sovereign body representing the sovereign people of India. Before the birth of freedom we have endured all the pains of labour and our hearts are heavy with the memory of this sorrow. Some of those pains continue even now. Nevertheless, the past is over and it is the future that beckons to us now.

That future is not one of ease or resting but of incessant striving so that we might fulfill the pledges we have so often taken and the one we shall take today. The service of India means the service of the millions who suffer. It means the ending of poverty and ignorance and disease and inequality of opportunity.

The ambition of the greatest man of our generation has been to wipe every tear from every eye. That may be beyond us, but so long as there are tears and suffering, so long our work will not be over.

And so we have to labour and to work, and work hard, to give reality to our dreams. Those dreams are for India, but they are also for the world, for all the nations and people are too closely knit together today for anyone of them to imagine that it can live apart.

Peace has been said to be indivisible; so is freedom, so is prosperity now, and so also is disaster in this One World that can no longer be split into isolated fragments.

To the people of India, whose representatives we are, we make an appeal to join us with faith and confidence in this great adventure. This is no time for petty and destructive criticism, no time for ill will or blaming others. We have to build the noble mansion of free India where all her children may dwell.

The appointed day has come - the day appointed by destiny - and India stands forth again, after long slumber and struggle, awake, vital, free and independent. The past clings on to us still in some measure and we have to do much before we redeem the pledges we have so often taken. Yet the turning point is past, and history begins anew for us, the history which we shall live and act and others will write about.

A new star rises, the star of freedom in the east, a new hope comes into being, a vision long cherished materializes. May the star never set and that hope never be betrayed by.

On this day our first thoughts go to the architect of this freedom, the father of our nation, who, embodying the old spirit of India, held aloft the torch of freedom and lighted up the darkness that surrounded us.We have often been unworthy followers of his and have strayed from his message. We shall never allow that torch of freedom to be blown out, however high the wind or stormy the tempest.

We have hard work ahead. There is no resting for any one of us till we redeem our pledge in full, till we make all the people of India what destiny intended them to be.

We are citizens of a great country, on the verge of bold advance, and we have to live up to that high standard. All of us, to whatever religion we may belong, are equally the children of India with equal rights, privileges and obligations.

And to India, our much-loved motherland, the ancient, the eternal and the ever-new, we pay our reverent homage and we bind ourselves afresh to her service.

 Jai Hind. Jai Hind.

Tuesday 7 February 2017

ISRO eyeing a record: Preparing to launch 104 Satellites in a single mission

The Indian Space Research Organisation(ISRO) is on the cusp of making history when it sends 104 satellites(3 Indian+101 Foreign) into orbit on its PSLV-C37 rocket on February 15 from Satish Dhawan Space Centre, Sriharikota spaceport in Andhra Pradesh. If the mission is successful, then ISRO will hold the record of most satellites launched in a single go. The most Satellites successfully launched by ISRO are 20 carried by PSLV-C34. Previously, this record was held by Russian Space Agency, Dnepr launcher holds the record for lifting 37 satellites to orbit in June 2014.
More information related to PSLV-C37 Vehicle, its Occupants and The Mission:
The PSLV is one of world's most reliable launch vehicles. It has been in service for over twenty years and has launched various satellites for historic missions like Chandrayaan-1, Mars Orbiter Mission, Space Capsule Recovery Experiment, Indian Regional Navigation Satellite System(IRNSS) etc. PSLV remains a favourite among various organisations as a launch service provider and has launched over 40 satellites for 19 countries. In 2008 it created a record for most number of satellites placed in orbit in one launch by launching 10 satellites into various Low Earth Orbits.

Vehicle Specifications:
Height              : 44 m
Diameter           : 2.8 m
Number of Stages  : 4
Lift Off Mass       : 320 tonnes (XL)
Variants            : 3(PSLV-G, PSLV - CA, PSLV - XL)
First Flight         : September 20, 1993
Last Flight         : December 07, 2016(-XL carrying RESOURCESAT-2A)

2.    Occupants:
        a)    Indian Satellites:
It’s the main occupant of the PSLV weighing 650 Kgs and roughly covering half the space of the launch vehicle. It is the fourth satellite in the CARTOSAT series, a very High Resolution Earth Observation satellite. It will be the best Indian Eye for imaging Earth through space.
ii)    INS-1A and INS-1B:
            The two other satellites, Nano satellites weighing about 10 Kg each                            and having a lifespan of 6 to 12 months.          
         b)    Foreign Satellites:
i)     US Satellites:
There will be 88 Doves (Nano Satellites, also called Doves) of Planet (An Earth Observatory Company run by former NASA Scientists). It will be released in the sets of four cubesats. The 88 cubesats are part of Planet’s earth observation constellation of 100 satellites. They weigh around 5 kg each and are called ‘Doves’ or Flock 3p. For Planet, too, it will be the record largest number of cubesats to be flown in a single launch.
ii)    Other Countries:
The other co-passengers of the mission will be from different countries as well. Israel, the UAE, Kazakhstan, the Netherlands, Belgium, and Germany will be having their small specialised satellites to be placed in their orbits at around 500 Km from Earth.

3. The Mission:
The Mission of PSLV-C37 will be to place the CARTOSAT series satellite into the sun-synchronous orbit, about 500 km above the earth.