This paper discusses the theory of green national accounting and, emphasizes on social welfare and sustainable accounting. Weitzman provides a foundation for net national product as the stationary equivalent of a wealth maximizing path when there is a constant interest rate and no exogenous...

This paper discusses the greenhouse gas emissions of the USA which cause the global warming in the atmosphere. In the last of the 20th century and the beginning of the 21st century, global climate change becomes more sever which is due to greenhouse gas emissions. The Kyoto Protocol is...

This paper shows how to prove the two Theorems first and second mock theta conjectures respectively.

This paper discusses the theory of the net national product and, emphasizes on social welfare and sustainable accounting in open economy. It is observed that the world economy following an egalitarian path, the aggregate capital gains being positive is equivalent to the interest rate tending to...

This paper deals with global Human Immunodeficiency Virus (HIV)/Acquired Immunodeficiency Syndrome (AIDS) and situation of this disease in Bangladesh. The disease is alarming in poorer areas as like Africa, Latin America, Caribbean islands and some parts of Asia. This paper aware the people who...

The Friedmann, Robertson-Walker universe is based on the assumption that the universe is exactly homogeneous and isotropic. This model expresses that there is an all encompassing big bang singularity in the past as the origin from which the universe emerges in a very hot phase and continues its...

Bangladesh is a densely populated developing country in the Southern Asia. Since the independence in 1971, its main concern is food insecurity. Food production in the country becomes about tripled in 2013 than that was in 1971, but population became more than double. In Bangladesh, about 31.51%...

Using method of Lagrange multipliers and applying first-order necessary conditions as well as second-order sufficient conditions for maximization, an attempt has been made to maximize an output of an agency subject to a nonlinear budget constraint by assuming that the agency gets price discounts...

During the last 30 years Chinese economy has increased rapidly. The pollution of air in many Chinese cities exceeds both national and international standards due to rapid urbanization, industrialization and increased energy consumption. At present China becomes the highest sulphur dioxide...