Table 1 Meaning of specific abbreviations in the formulas.

From: Urban population prediction based on multi-objective lioness optimization algorithm and system dynamics model

Variables

Details

NI

The number of people moving in

GDPF

Economic impact factors affecting population migration

MF

Health infrastructure influencing factors of population migration

ERF

Educational infrastructure influencing factors of population migration

GDPP

Economic growth rate

FR

Growth rate of fixed assets

RSR

Real wage growth rate

SLR

Growth rate of science and technology level

RDP

R&D capital growth rate

STR

Growth rate of the proportion of scientific expenditure

ADA

Growth rate of doctors per capita

ABA

Growth rate of beds per capita

ER

Growth rate of proportion of education expenditure

ENP

Growth rate of teaching facilities

SRP

Growth rate of the number of students in school per capita

TRP

Growth rate in the number of teachers per capita

NO

Natural emigration rate

MO

Mechanical emigration rate of population

LF

Influencing factors of living environment on mechanical emigration rate of population

IF

Influencing factors of wage income on mechanical emigration rate of population

EIP

Expected income ratio

PD

The population density

SF

Factors affecting the speed of population transformation

JER

The employment rate

EC

The coefficient of employment