scholarly journals The dynamic programming management model of groundwater with covariates: a case study for the Songyuan area, Jilin Province, China

2017 ◽  
Vol 17 (5) ◽  
pp. 1260-1267
Author(s):  
Fu-rong Yu ◽  
Bai-zhong Yan ◽  
Ji-hong Qu ◽  
Zhi-ping Li ◽  
Zhi-peng Gao ◽  
...  
Keyword(s):  
Dynamic Programming ◽  
Theoretical Foundation ◽  
Jilin Province ◽  
Management Model ◽  
Area Of Interest ◽  
Western Jilin Province ◽  
Groundwater Management Model ◽  
The Relationship ◽  
Western Jilin

This research analysed the action and characteristics of the relationship between mutual-feed joint-variations of groundwater. On this basis, a theory and method for constructing a dynamic programming management model for groundwater with covariates was proposed which used the state transition equation method. The model was solved using the differential dynamic programming (DDP) method. Thereafter, the groundwater system of the Songyuan area in western Jilin Province was treated as an area of interest to study the major problem of the relationships governing mutual-feed joint-variation. Based on the numerical simulation model, the research paid more attention to Qianguo County and Fuyu County and established a dynamic programming management model of the groundwater with covariates for these areas. Then the optimised amount of pumping, the groundwater level, and the covariates were solved simultaneously. To sum up, this research enriched the theory and method for dealing with mutual-feed joint-variations in the groundwater management model. Thereby, it established a theoretical foundation and provided technical support for the solution of various practical problems.

A case study on the relationship between soil geochemical components and salinization in the western Jilin Province of China

2004 ◽  
Author(s):  
Yingbo Zhu ◽  
Quansheng Ge ◽  
Jiyuan Liu ◽  
Yunxuan Zhou ◽  
Zhiqiang Gao ◽  
...  
Keyword(s):  
Jilin Province ◽  
Western Jilin Province ◽  
The Relationship ◽  
Western Jilin

scholarly journals Diversity in the relationship between low and upland society in mountainous Southeast Asia

Impact ◽  
2021 ◽  
Vol 2021 (3) ◽  
pp. 61-63
Author(s):  
Shinsuke Tomita
Keyword(s):  
Southeast Asia ◽  
Political Power ◽  
Agricultural Productivity ◽  
Associate Professor ◽  
Rice Farming ◽  
Area Of Interest ◽  
Key Drivers ◽  
The Relationship ◽  
Shed Light

The mountainous areas of mainland Southeast Asia have been an area of interest for researchers for decades. The mountains are located in a region that stretches out to the southern and western parts of China and encompasses different ethnic groups, forming a unique political, historical, social and cultural space. Associate Professor Shinsuke Tomita, Asian Satellite Campuses Institute, Nagoya University, Japan, is exploring the relationship between lowland and upland society in mountainous Southeast Asia, as well as investigating how agricultural productivity can be understood in the context of culture and society. In previous studies, researchers have surmised that interactions between the two societies are one of the key drivers behind the region's formation. An example of this is wet rice farming, which is regarded as the source of political power of the chieftains of the region due to its higher agricultural productivity. As such, researchers have been prompted to better understand the political power derived from wet rice farming and rethink lowland and upland relationships. From a case study in northern Laos, Tomita and the team shed light on relationships that cannot be explained by agricultural productivity. The researchers have also unearthed interesting findings relating to the power of the chieftain, including that the wet rice fields owned by the chieftain are not necessarily larger than other villagers and the power of the chieftain is likely unstable.

Sign in / Sign up

Export Citation Format

Share Document