Friday, August 22, 2008

Supply and demand


The price P of a product is determined by a balance between production at each price (supply S) and the desires of those with purchasing power at each price (demand D). The graph depicts an increase in demand from D1 to D2, along with a consequent increase in price and quantity Q sold of the product.

In economics, supply and demand describes market relations between prospective sellers and buyers of a good. The supply and demand model determines price and quantity sold in a market. This model is fundamental in microeconomic analysis, and is used as a foundation for other economic models and theories. It predicts that in a competitive market, price will function to equalize the quantity demanded by consumers, and the quantity supplied by producers, resulting in an economic equilibrium of price and quantity. The model incorporates other factors changing equilibrium as a shift of demand and/or supply.
Strictly speaking, the model of supply and demand applies to a theoretical type of market called perfect competition in which no single buyer or seller has much effect on prices, and prices are known. The quantity of a product supplied by the producer and the quantity demanded by the consumer are dependent on the market price of the product. The law of supply states that quantity supplied is related to price. It is often depicted as directly proportional to price: the higher the price of the product, the more the producer will supply, ceteris paribus ("all other things being equal"). The law of demand is normally depicted as an inverse relation of quantity demanded and price: the higher the price of the product, the less the consumer will demand, ceteris paribus. The respective relations are called the supply curve and demand curve, or supply and demand for short.
The supply-and-demand model (sometimes described as the law of supply and demand) posits that a market tends toward equilibrium price and quantity of a commodity at the intersection of consumer demand and producer supply. At this point, quantity supplied equals quantity demanded (as shown in the figure[1] ). If the price for a good is below equilibrium, consumers demand more of the good than producers are prepared to supply. This defines a shortage of the good. A shortage results in producers increasing the price until equilibrium is reached. If the price of a good is above equilibrium, there is a surplus of the good. Producers are motivated to eliminate the surplus by lowering the price, until equilibrium is reached.
The supply schedule, graphically represented by the supply curve, is the relationship between market price and amount of goods produced. In short-run analysis, where some input variables are fixed, a positive slope can reflect the law of diminishing marginal returns, which states that beyond some level of output, additional units of output require larger amounts of input. In the long-run, where no input variables are fixed, a positively-sloped supply curve can reflect diseconomies of scale.
For a given firm in a perfectly competitive industry, if it is more profitable to produce than to not produce, profit is maximized by producing just enough so that the producer's marginal cost is equal to the market price of the good.

The supply curve of labour is an example of increasing net input(e.g., wages) above a certain point resulting in decreased net output (hours worked).
Occasionally, supply curves bend backwards. A well known example is the backward bending supply curve of labour. Generally, as a worker's wage increases, he is willing to work longer hours, since the higher wages increase the marginal utility of working, and the opportunity cost of not working. But when the wage reaches an extremely high amount, the employee may experience the law of diminishing marginal utility. The large amount of money he is making will make further money of little value to him. Thus, he will work less and less as the wage increases, choosing instead to spend his time in leisure.[2] The backwards-bending supply curve has also been observed in non-labor markets, including the market for oil: after the skyrocketing price of oil caused by the 1973 oil crisis, many oil-exporting countries decreased their production of oil.
The supply curve for public utility production companies is unusual. A large portion of their total costs are in the form of fixed costs. The supply curve for these firms is often constant (shown as a horizontal line).
Another postulated variant of a supply curve is that for child labor. Supply will increase as wages increase, but at a certain point a child's parents will pull the child from the child labor force due to cultural pressures and a desire to concentrate on education[clarify]. The supply will not increase as the wage increases, up to a point where the wage is high enough to offset these concerns. For a normal demand curve, this can result in two stable equilibrium points - a high wage and a low wage equilibrium point.
Five-year plans of India


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The economy of India is based in part on planning through its five-year plans, developed, executed and monitored by the Planning Commission. With the Prime Minister as the ex officio Chairman, the commission has a nominated Deputy Chairman, who has rank of a Cabinet minister. Montek Singh Ahluwalia is currently the Deputy Chairman of the Commission. The tenth plan completed its term in March 2007 and the eleventh plan is currently underway.
Contents[hide]
1 First plan (1951-1956)
2 Second plan (1956-1961)
3 Third plan (1961-1966)
4 Fourth plan (1969-1974)
5 Fifth plan (1974-1979)
6 Sixth plan (1980-1985)
7 Seventh plan (1985-1989)
8 Period between 1989-91
9 Eighth plan (1992-1997)
10 Ninth plan (1997-2002)
11 Tenth plan (2002-2007)
12 Eleventh plan (2007-2012)
13 External links
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First plan (1951-1956)
The first Indian Prime Minister, Jawaharlal Nehru presented the first five-year plan to the Parliament of India on December 8, 1951. The total plan budget of 206.8 billion INR (23.6 billion USD in the 1950 exchange rate) was allocated to seven broad areas: irrigation and energy (27.2 percent), agriculture and community development (17.4 percent), transport and communications (24 percent), industry (8.4 percent), social services (16.64 percent), land rehabilitation 4.1 percent), and other (2.5 percent).
The target growth rate was 2.1 percent annual gross domestic product (GDP) growth; the achieved growth rate was 3.6 percent. During the first five-year plan the net domestic product went up by 15 percent. The monsoons were good and there were relatively high crop yields, boosting exchange reserves and per capita income, which went up 8 percent. Lower increase of per capita income as compared to national income was due to rapid population growth. Many irrigation projects were initiated during this period, including the Bhakra Dam, Hirakud Dam, and Mettur Dam in South India. The World Health Organization, with the Indian government, addressed children's health and reduced infant mortality, contributing to population growth.
At the end of the plan period in 1956, five Indian Institutes of Technology (IITs) were started as major technical institutions. University Grant Commission was set up to take care of funding and take measures to strengthen the higher education in the country.
Contracts were signed to start five steel plants; however these plants did not come into existence until the middle of the next five-year plan.

[edit] Second plan (1956-1961)
The second five-year plan focused on industry, especially heavy industry. Domestic production of industrial products was encouraged, particularly in the development of the public sector. The plan followed the Mahalanobis model, an economic development model developed by the Indian statistician Prasanta Chandra Mahalanobis in 1953. The plan attempted to determine the optimal allocation of investment between productive sectors in order to maximise long-run economic growth .
Hydroelectric power projects and five steel mills at Bhilai, Durgapur, and Jamshedpur were established. Coal production was increased. More railway lines were added in the north east.
The Atomic Energy Commission was formed in 1957 with Homi J. Bhabha as the first chairman. The Tata Institute of Fundamental Research was established as a research institute. In 1957 a talent search and scholarship program was begun to find talented young students to train for work in nuclear power.

Third plan (1961-1966)
The third plan stressed on agriculture and improving production of rice, but the brief Sino-Indian War in 1962 exposed weaknesses in the economy and shifted the focus towards defense. In 1965-1966, the Green Revolution in India advanced agriculture. The war led to inflation and the priority was shifted to price stabilization. The construction of dams continued. Many cement and fertilizer plants were also built. Punjab begun producing an abundance of wheat.
Many primary schools were started in rural areas. In an effort to bring democracy to the grassroot level, Panchayat elections were started and the states were given more development responsibilities.
State electricity boards and state secondary education boards were formed. States were made responsible for secondary and higher education. State road transportation corporations were formed and local road building became a state responsibility.Gross Domestic Product rate during this duration was lower at 2.7% due to 1962 Sino-Indian War and Indo-Pakistani War of 1965.[citation needed]

Fourth plan (1969-1974)
At this time Indira Gandhi was the Prime Minister. The Indira Gandhi government nationalized 19 major Indian banks. In addition, the situation in East Pakistan (now independent Bangladesh) was becoming dire as the Indo-Pakistani War of 1971 and Bangladesh Liberation War took place.
Funds earmarked for the industrial development had to be used for the war effort. India also performed the Smiling Buddha underground nuclear test in 1974, partially in response to the United States deployment of the Seventh Fleet in the Bay of Bengal to warn India against attacking West Pakistan and widening the war.

Fifth plan (1974-1979)
Stress was laid on employment, poverty alleviation, and justice. The plan also focused on self-reliance in agricultural production and defense. In 1978 the newly elected Morarji Desai government rejected the plan. Electricity Supply Act was enacted in 1975, which enabled the Central Government to enter into power generation and transmission.[citation needed]

Sixth plan (1980-1985)
Called the Janata government plan, the sixth plan marked a reversal of the Nehruvian model.
When Rajiv Gandhi was elected as the prime minister, the young prime minister aimed for rapid industrial development, especially in the area of information technology. Progress was slow, however, partly because of caution on the part of labor and communist leaders.
The Indian national highway system was introduced for the first time and many roads were widened to accommodate the increasing traffic. Tourism also expanded.
The sixth plan also marked the beginning of economic liberalization. Price controls were eliminated and ration shops were closed. This led to an increase in food prices and an increased cost of living.
Family planning also was expanded in order to prevent overpopulation. In contrast to China's harshly-enforced one-child policy, Indian policy did not rely on the threat of force. More prosperous areas of India adopted family planning more rapidly than less prosperous areas, which continued to have a high birth rate.

Seventh plan (1985-1989)
The Seventh Plan marked the comeback of the Congress Party to power. The plan lay stress on improving the productivity level of industries by upgradation of technology.

[edit] Period between 1989-91
1989-91 was a period of political instability in India and hence no five year plan was implemented. Between 1990 and 1992, there were only Annual Plans. In 1991, India faced a crisis in Foreign Exchange (Forex) reserves, left with reserves of only about $1 billion (US). Thus, under pressure, the country took the risk of reforming the socialist economy. P.V. Narasimha Rao)(28 June 1921 – 23 December 2004) also called Father of Indian Economic Reforms was the twelfth Prime Minister of the Republic of India and head of Congress Party, and led one of the most important administrations in India's modern history overseeing a major economic transformation and several incidents affecting national security. At that time Dr. Manmohan Singh (currently, Prime Minister of India) launched India's free market reforms that brought the nearly bankrupt nation back from the edge. It was the beginning of privatization and liberalization in India.

Eighth plan (1992-1997)
Modernization of industries was a major highlight of the Eighth Plan. Under this plan, the gradual opening of the Indian economy was undertaken to correct the burgeoning deficit and foreign debt. Meanwhile India became a member of the World Trade Organization on 1 January 1995.This plan can be termed as Rao and Man mohan model of Economic development. The major objectives included, containing population growth,poverty reduction,employment generation,strengthening the infrastructure,Institutional building, Human Resource development,Involvement of Panchayat raj,Nagarapalikas,N.G.OSand Decentralisation and peoples participation. Energy was given prority with 26.6% of the outlay. An average annual growth rate of 6.7%against the target 5.6% was achieved.

Ninth plan (1997-2002)
During the Ninth Plan period, the growth rate was 5.35 per cent, a percentage point lower than the target GDP growth of 6.5 per cent.
http://www.hinduonnet.com/thehindu/2002/10/12/stories/2002101200051000.htm

Tenth plan (2002-2007)
The main objectives of the 10th Five-Year Plan were:
Reduction of poverty ratio by 5 percentage points by 2007;
Providing gainful and high-quality employment at least to the addition to the labour force;
All children in india in school by 2003; all children to complete 5 years of schooling by 2007;
Reduction in gender gaps in literacy and wage rates by at least 50% by 2007;
Reduction in the decadal rate of population growth between 2001 and 2011 to 16.2%;
Increase in Literacy Rates to 75 per cent within the Tenth Plan period (2002-3 to 2006-7);
Reduction of Infant mortality rate (IMR) to 45 per 1000 live births by 2007 and to 28 by 2012;
Reduction of Maternal Mortality Ratio (MMR) to 2 per 1000 live births by 2007 and to 1 by 2012;
Increase in forest and tree cover to 25 per cent by 2007 and 33 per cent by 2012;
All villages to have sustained access to potable drinking water within the Plan period;
Cleaning of all major polluted rivers by 2007 and other notified stretches by 2012;
Economic Growth further accelerated during this period and crosses over 8% by 2006.

Eleventh plan (2007-2012)
The eleventh plan has the following objectives:
Income & Poverty
Accelerate GDP growth from 8% to 10% and then maintain at 10% in the 12th Plan in order to double per capita income by 2016-17
Increase agricultural GDP growth rate to 4% per year to ensure a broader spread of benefits
Create 70 million new work opportunities.
Reduce educated unemployment to below 5%.
Raise real wage rate of unskilled workers by 20 percent.
Reduce the headcount ratio of consumption poverty by 10 percentage points.
Education
Reduce dropout rates of children from elementary school from 52.2% in 2003-04 to 20% by 2011-12
Develop minimum standards of educational attainment in elementary school, and by regular testing monitor effectiveness of education to ensure quality
Increase literacy rate for persons of age 7 years or more to 85%
Lower gender gap in literacy to 10 percentage points
Increase the percentage of each cohort going to higher education from the present 10% to 15% by the end of the plan
Health
Reduce infant mortality rate to 28 and maternal mortality ratio to 1 per 1000 live births
Reduce Total Fertility Rate to 2.1
Provide clean drinking water for all by 2009 and ensure that there are no slip-backs
Reduce malnutrition among children of age group 0-3 to half its present level
Reduce anaemia among women and girls by 50% by the end of the plan
Women and Children
Raise the sex ratio for age group 0-6 to 935 by 2011-12 and to 950 by 2016-17
Ensure that at least 33 percent of the direct and indirect beneficiaries of all government schemes are women and girl children
Ensure that all children enjoy a safe childhood, without any compulsion to work
Infrastructure
Ensure electricity connection to all villages and BPL households by 2009 and round-the-clock power.
Ensure all-weather road connection to all habitation with population 1000 and above (500 in hilly and tribal areas) by 2009, and ensure coverage of all significant habitation by 2015
Connect every village by telephone by November 2007 and provide broadband connectivity to all villages by 2012
Provide homestead sites to all by 2012 and step up the pace of house construction for rural poor to cover all the poor by 2016-17
Environment
Increase forest and tree cover by 5 percentage points.
Attain WHO standards of air quality in all major cities by 2011-12.
Treat all urban waste water by 2011-12 to clean river waters.
Increase energy efficiency by 20 percentage points by 2016-17.