Uncertain population model with age-structure

نویسندگان

  • Yuhong Sheng
  • Rong Gao
  • Zhiqiang Zhang
چکیده

The partial differential equation has been vastly applied to analyzing the problems in the life sciences. However, these types of partial differential equation models are mostly deterministic. As we know, the real life is full of uncertain factors, hence the above deterministic partial differential equations are not enough to handle the problems with uncertain noises. For modelling these problems more rationally, we present an uncertain partial differential equation model involving age structure of population in this paper, and make a species analysis with it.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Robust Quadratic Assignment Problem with Uncertain Locations

 We consider a generalization of the classical quadratic assignment problem, where coordinates of locations are uncertain and only upper and lower bounds are known for each coordinate. We develop a mixed integer linear programming model as a robust counterpart of the proposed uncertain model. A key challenge is that, since the uncertain model involves nonlinear objective function of the ...

متن کامل

Investigating the Relationship between Population Structure and Poverty

Introduction: Poverty reduction is one of the important macroeconomic goals of any country, but achieving this important issue requires examining the factors affecting it. Changing the age structure of the population is one of the effective factors in reducing poverty in countries. Therefore, governments can make the most of their population, given the capacity of countries and providing the ne...

متن کامل

Interval network data envelopment analysis model for classification of investment companies in the presence of uncertain data

The main purpose of this paper is to propose an approach for performance measurement, classification and ranking the investment companies (ICs) by considering internal structure and uncertainty. In order to reach this goal, the interval network data envelopment analysis (INDEA) models are extended. This model is capable to model two-stage efficiency with intermediate measures i...

متن کامل

Investigating the Relationship between Population Structure and Poverty

Introduction: Poverty reduction is one of the important macroeconomic goals of any country, but achieving this important issue requires examining the factors affecting it. Changing the age structure of the population is one of the effective factors in reducing poverty in countries. Therefore, governments can make the most of their population, given the capacity of countries and providing the ne...

متن کامل

The Effect of Tuned Mass Damper on Seismic Response of Building Frames with Uncertain Structural Characteristics

Tuned mass dampers (TMDs) could be used to absorb the input energy of the applied load, and reduce the response of the building frames. However, the effectiveness of TMD in reducing the response of the building frames could be affected by inherited uncertainties in the structural characteristics of the frames. In this study, in order to investigate the probabilistic response of steel moment-res...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Journal of Intelligent and Fuzzy Systems

دوره 33  شماره 

صفحات  -

تاریخ انتشار 2017