Results 31 to 40 of about 2,349,576 (338)

A novel simultaneous grey model parameter optimization method and its application to predicting private car ownership and transportation economy

Journal of Industrial and Management Optimization, 2022
Common models used for grey system predictions include the GM (1, 1), GM (1, N), and GM (N, 1). Their whitening equations are ordinary differential equations.
M. Cheng, Zhun Cheng
semanticscholar   +1 more source

Grey Zone in the Real Estate Market

Real Estate Management and Valuation, 2016
The grey area exists in all countries of the world. It is visible in various areas of activity, which means that it is widespread. It is a sign of the weak state institutional structures and overregulation of the economy. Traces of it are also visible on
Kucharska-Stasiak Ewa
doaj   +1 more source

Living standards during previous recessions [PDF]

, 2009
The current recession is the first that the UK has experienced since the early 1990s. Much has changed since then, and society's collective memory of who fared worst during previous recessions seems likely to have faded.
Muriel, A., Sibieta, L.
core   +1 more source

Application of Grey Lotka-Volterra Model in Water-Economy-Industry-Technology Innovation System in Beijing-Tianjin-Hebei Region

International Journal of Environmental Research and Public Health, 2022
With the proposal of China’s high-quality development strategy, how to promote regional stability and coordinated development based on a deep understanding of the main contradictions and changes in China’s society has become the focus of research.
Xiaorui Guo, Lifeng Wu, Meng Wang
semanticscholar   +1 more source

Research on the Day-Ahead Operation Decision Making Method for the Electric-Thermal System Based on Grey Fuzzy Evaluation

Zhongguo dianli, 2023
The day-ahead operation decision of the electric-thermal system affects the economy and reliability of the next day's system operation. Therefore, it is significant to develop a reasonable operation decision plan.
Zhe WANG, Xu YANG, Di ZHU, Xianglong LI, Qijing XING, Liyong WANG, Linyu WANG   +6 more
doaj   +1 more source

Architecture Profitable for All

Проект Байкал, 2017
The scope of development and even the existence of the shadow economy are recognized by the official economic science rather unwillingly. In the meanwhile, the shadow (“grey”) economy is not only the way of economic behavior, but also a style of life. It
Konstantin Lidin
doaj   +1 more source

Assessment and Prediction for China’s Regional Agricultural Sustainability [PDF]

E3S Web of Conferences, 2021
This paper proposes a sustainable agricultural development index (SADI) and a hybrid grey model for measuring the changes in agricultural sustainability over time.
Zhao Yu, Xie Qiyang, Zhang Yu
doaj   +1 more source

Health cycles and health transitions [PDF]

, 2013
We study the dynamics of poverty and health in a model of endogenous growth and rational health behavior. Population health depends on the prevalence of infectious diseases that can be avoided through costly prevention.
Chakraborty, Shankha, Papageorgiou, Chris, Perez Sebastian, Fidel   +2 more
core   +4 more sources

Forecasting Guangdong’s Marine Science and Technology, Marine Economy, and Employed Persons by Coastal Regions—Based on Rolling Grey MGM(1,m) Model

Water, 2022
The development of marine scientific and technological innovation is an important force for realizing the high-quality development of the marine economy.
Xin Shan, Yun Cao
semanticscholar   +1 more source

The characteristics of informal economy in the Russian Federation [PDF]

Međunarodni Problemi, 2005
The informal economy is today the reality of all countries in the world, including both those in transition and the developed ones, but to a varying degree.
Vučićević Milena
doaj   +1 more source