Sunday, October 28, 2012

Food grain availability in India

Problem Narrative

India in the second largest country in the world in terms of its population. This translates into feeding more mouths in India than anywhere else in the world. Hence the production of various food grains, which for a country that is mainly vegetarian, is one of the prime concerns. Inspite of the green revolution in India and the increase of food grain production overall, the per-capita availability of food grain has diminished over the years. One of the chief problems is the rising prices of food. Hence the impact of the per-capita availability of food grains is mainly felt by the poorer and more vulnerable sections of the society. Indians today are consuming far less protein than they used to. Pulses is one of the most important sources of protein for a mainly vegetarian diet. India is one of the largest producers and consumers of pulses in the world. However the per capita domestic production of pulses has dropped from 63 gms in 1970 to a very low 36 gms in 2008.


Behavior Over Time

http://www.globalhealthcheck.org/wp-content/uploads/2012/01/ghosh-graph51.jpg


http://www.growmorepulses.com/upload/images/pulses_nutrition_graph.gif


As you can see from the above graphs, that even though the overall production of food grains has increased over the years, the high growth of population has led to overall decrease in the per-capita availability of various food grains.

Relevance of a Systems Perspective

Foodgrain availability is an ideal systems problem for analysis. The problem over time has been that the population of India is increasing at a much more rapid pace than the increase in foodgrain production. There are multiple factors affecting the availability of food grains. Constant rising population translates into more mouths being fed every day, this creates a gap in food grains supply and demand. Supply doesn't match up to the rapidly increasing demand. Still in effort to meet the demand, food grain production increases in hopes to catch up to the demand. However the food production is not increasing as rapidly as the population, hence the per capita availability of foodgrain is still diminishing. This inturn increases the supply demand gap even further. Another factor is limited availability of cultivable land and increasing the yields from cultivable land. Government’s basic concern of feeding poor people and increasing food grain production while developing more urban areas for the overall growth of the country are the competing goals at play.

Study Objective and Questions to be Addressed

The World Health Organization (WHO) recommends a minimum of 80 gms of pulses consumption per person per day for Indians for their daily dose of nutrition. The main purpose of this research is how to achieve these goals to meet the demand supply mismatch. According to the WHO recommendations and the expected growth of Indian population, India will need to produce substantially more foodgrains. The main concern is that the availability of cultivable land is constant due to geographically restraints and on the contrary reducing due to development of urbanization and infrastructure. So with the development of various technologies why is India’s foodgrain production still lagging behind? The overall production of foodgrains have increased, but why is it not able to keep up with the population growth? How will India manage its growth of foodgrain production to not only mend the current supply demand gap but also keep up with the ever increasing population of India?

Hence, in my opinion, India will either have to double its acreage at the current yield levels or will have to double the yield at the fixed acreage. Since both these alternatives are not feasible in isolation, a synergistic effect needs to take place where a combination of both is the eventual goal. 


Dynamic Hypothesis

India is the second most populous nation in the world. Hence to feed its huge population, it needs to grow an equally large number of foodgrains. However, even with the rise of food production over the years, India in not able to keep up with the ever rising demand created by the ever increasing population. Currently, India is a foodgrain deficient nation and does not produce sufficient food grain for its own population. Various steps have been taken by government to step up the production of foodgrains but it has failed to match up to the rising demands. This has created a big supply demand gap which will continue to grow if concrete steps are not taken by the government. 


In the first loop, the main actors at play here is the rising population and the Government of India. As described in the loop below, as the population of India is rising on a fast pace, it is creating a big supply demand gap in food grains. The current capacity of the food grain production is not able to match up to the rising demand.

Food grain is one of the most important source of nutrition for a majority of people in India. Hence in an effort to reduce the supply demand gap, the government issues various policies for food grains. Most of the government policies in the past, like the ‘Green Revolution’ in the 1960’s, have been regarding food grain production. These policies results in increase production of food grain. Once the production of food grains and the supply for food grains rises, the supply demand mismatch reduces accordingly.



As observed in the first loop, the rising population has caused the government to issue various policies to reduce the supply demand gap by increasing the foodgrain production. With increase in food grain production, food grain production per capita also increases. However, even with higher food grain production, due to substantial rise in population every year there is always more per capita food grain need and people being fed than per capita production of food grain. Even with various government policies the supply demand gap grows with the rising population of India and continues to do so.


Ideal situation is a reinforcing loop, which behaves as a best case scenario in this issue. The increase in food production leads to the intention of increasing the food-grain inventory. Having a greater food inventory reduces the supply demand gap causing the prices for food grain to come down significantly. This in turn increases the overall food grain sale. The higher food grain sales gives farmers a greater monetary incentive to produce more food grains and thus encourages them to purchase more farmland. Thus the overall effect of higher sales, more farmland for production and greater incentive for farming causes the overall production of food grains to rise. 


 As described in the Loop 3(ideal situation), as the farmers see more profits in producing food grains, there is a greater incentive for farming, which leads to more purchase of farmland. But the overall growth of the country lies in industrialization and urbanization. The focus of a developing country is to increase urbanization and industrial production. Thus with the rising farmlands, there is no available land for urbanization of the country. Hence the Government will also incorporate policies for the urbanization of India. This loop is trying to display the two competing goals of increasing farmland vs increasing land for urbanization.






Sunday, October 14, 2012

Food Grain availability in India

Problem Narrative

India in the second largest country in the world in terms of its population. This translates into feeding more mouths in India than anywhere else in the world. Hence the production of various food grains, which for a country that is mainly vegetarian, is one of the prime concerns. In-spite of the green revolution in India and the increase of food grain production; the overall per-capita availability of food grain has diminished over the years. One of the chief problems is the rising price of food and high population growth. Hence the poorer and more vulnerable sections of the society mainly feel the impact of the per-capita availability of food grains. Indians today are consuming far less protein than they used to. Pulses are one of the most important sources of protein for a mainly vegetarian diet. India is one of the largest producers and consumers of pulses in the world. However the per capita domestic production of pulses has dropped from 63 gms in 1970 to a very low 36 gms in 2008.

Behavior Over Time


As you can see from the above graphs, that even though the overall production of food grains has increased over the years, the high growth of population has led to overall decrease in the per-capita availability of various food grains.

Relevance of a Systems Perspective

Food grain availability is an ideal systems problem for analysis. There are multiple factors affecting the per-capita availability of food grains. Constant rising population translates into more mouths being fed everyday, limited availability of cultivable land, and increasing the yields from cultivable land are the various dynamic factors. Government’s basic concern of feeding poor people and increasing food grain production while developing more urban areas for the overall growth of the country are the competing goals at play.

Study Objective and Questions to be Addressed

The World Health Organization (WHO) recommends a minimum of 80 gms of pulses consumption per person per day for Indians for their daily dose of nutrition. The main purpose of this research is how to achieve these goals to meet the demand supply mismatch. According to the WHO recommendations and the expected growth of Indian population, India will need to produce substantially more food grains. The main concern is that since the availability of cultivable land is constant due to geographically restraints and on the contrary reducing due to development of urbanization and infrastructure. Hence India will either have to double its acreage at the current yield levels or will have to double the yield at the fixed acreage. Since both these alternatives are not feasible in isolation, a synergistic effect needs to take place where a combination of both is the eventual goal.

Friday, September 28, 2012

Revised rocket man



B1: Effect of air and altitude
Depending on higher or lower altitude, effect of air density and force at which the air pushes against the rocket directly affects the descent rate of rocket.

B2: Effect of air pushing against rocket
As descent rate increases. Rocket is getting close to the earth. Hence there is higher force of air resistance on the rocket, which in turn slows down the rocket’s descent rate.

B3: Left over fuel
As throttle setting increase the rate at which fuel burns also increases which results in less remaining fuel then before, which in turn makes the rocket lighter, Once the rocket is lighter the force of gravity on rocket increases which increases rockets downward acceleration and in turn decent rate. If decent rate increases, altitude decreases which increases the goal decent rate. Finally when goal decent rate increases the throttle setting of the rocket decreases.

B4: Fuel control
As throttle setting increases the fuel burn rate also increases, because of that there is decreases in remaining fuel in rocket. If there is a decrease in remaining fuel in rocket, goal decent rate of the rocket increase which in turn decreases the throttle setting.

B5: Safe Decent
Once the descent rate of the rocket increases, altitude of the rocket above the earth decreases. Which brings us close to our goal decent rate. If the goal descent rate decreases then we increase the rockets throttle setting, which also increases the rocket’s fuel burn rate. If the fuel-burn rate increases then the thrust from the rocket burn also increases. Once the thrust from the rocket burn increases rockets upward acceleration from the rocket engine also increases, which in turn decreases the descent rate of the rocket.

B6: Effect of mass and gravity pull
As rockets descent rate increases the altitude decreases, if the altitude decreases then the goal descent rate of the rocket also decreases, which in turn increases the throttle setting of the rocket. Increase in throttle setting also increases the fuel burn rate of the rocket. If the fuel-burn rate increases then the remaining rocket fuel decreases. Which in turn decreases the rocket mass. If the rocket’s mass decreases, upward acceleration from the rocket engine increases. Which in turn decrease the rockets decent rate.   

R1: Effect of gravity
If descent rate of rocket increase then rocket gets closer and closer to the earth decreasing the altitude. Due to which earth’s gravity pull on rocket gets stronger and rocket’s downward acceleration increases. Which in turn also increase the descent rate of rocket. 


  • DelayThere might be some delay between fuel burn rate setting of the rocket and thrust from the rocket burn. It might take some time (not much but some) for rocket engine to burn the fuel and effect the rocket thrust setting.

Behavior of the system at different times through the flight.  
  1. I think B3 and B6 loops will help in determining the flight of the rocket early in the flight, because in early stages of rocket descending towards earth rockets engine and earths gravity will do most the work.
  2. Loop R1, B2, B4 and B1 will dominate in final seconds of the flight of the rocket, because by now rocket will be close to the earth. Which means rocket will be effected by lots of variables like gravity, air density, air resistance on the rocket and downward acceleration from gravity stronger than before.