地域的な違い,分布のダイナミクス,そして長江経済帯域における多次元的な食糧安全保障レベルの収束

Jing Cheng1, Yaning Liu1

  • 1School of Humanities and Social Sciences, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China.

PloS one
|February 19, 2026
PubMed
まとめ

川経済帯域の食糧安全保障は着実に改善しているが,地域格差は残っている. 不均衡な発展に対処し,統合された食料安全保障と生態保護を確保するために,異なる戦略が必要である.

関連する概念動画

Distribution and Dispersion00:54

Distribution and Dispersion

Ecology is the study of how organisms interact with their environment and with one another. An important aspect of ecology is understanding where species are found and how individuals are distributed within those areas. The geographic range of a species refers to the total area where its members are located, while dispersion describes the pattern of spacing of individuals within that range.Geographic Range and Dispersion PatternsWithin a species’ geographic range, individuals may be distributed...
Region of Convergence of Laplace Tarnsform01:20

Region of Convergence of Laplace Tarnsform

The Region of Convergence (ROC) is a fundamental concept in signal processing and system analysis, particularly associated with the Laplace transform. The ROC represents an area in the complex plane where the Laplace transform of a given signal converges, determining the transform's applicability and utility.
Consider a decaying exponential signal that begins at a specific time. When deriving its Laplace transform, the time-domain variable is replaced with a complex variable. This substitution...
Region of Convergence01:17

Region of Convergence

The z-transform is a powerful mathematical tool used in the analysis of discrete-time signals and systems. It is a crucial tool in the analysis of discrete-time systems, but its convergence is limited to specific values of the complex variable z. This range of values, known as the Region of Convergence (ROC), is fundamental in determining the behavior and stability of a system or signal. The ROC defines the region in the complex plane where the z-transform converges, which can take various...