Faced with the problem of high consumption, pollution and restrained resource brought by the high development of economy, the project management field begins to apply the idea of recycle economy to the whole course of the project management too. The project management systems under recycle economy were all carried out around 3R principle.
21~st century is the era of Cyberspace Economy and its emergence &development would bring dramatic changes in traditional patterns of resources distribution, market structures and consumption modes as well as business management.
It is promoting a new kind of consumption mode that is progressive, reasonable and healthy. It tries to improve our life quality and protect our existence environment from polluting and consuming excessively all at once.
The cultural realization of economy is a new trend of economic development with the increasingly frequent interaction between economy and culture since the seventies of the 20th century, which refers to the conversion from the realization of production value and increase of profit through the heavy consumption of simple labor, natural resources and capital to the economic increase depending on such elements as the science and technology, knowledge, information and even aesthetic, psychology, etc.
Only by improving the level of productive technology, reducing energy consumption, improving the efficiency of energy utilization, it is possible to realize economic sustainable growth in long under the condition of guaranteeing sustainable utilization of energy.
A direct method in optimal portfolio and consumption choice
In this paper, we use a direct method to solve the optimal portfolio and consumption choice problem in the security market for a specific case, in which the utility function is of a given homogenous form, i.e.
An optimal investment/consumption problem with higher borrowing rate
In this paper, optimal investment and consumption decisions for an optimal choice problem in infinite horizon are considered.
this paper gets the optimal consumption and optimal investment in the form of with .