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Analytical Frameworks and Theories of Electric Power in Non‐Linear Circuits

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
Based on the challenges of distorted currents and non‐linear components in modern power grids, this article reviews seminal electrical power theories that seek to generalize the traditional definitions of active, reactive, and apparent power. It provides a detailed analysis of their mathematical foundations, practical implementation, and validity.
Rafael Escudero, Luis Ibarra
wiley +1 more source

Crown structure and competitive interactions in mixed forests: Insights from an individual‐based model

Ecological Research, Volume 40, Issue 5, September 2025.
Conifers adapt to high‐latitude regions with narrow crowns, while broadleaf trees form spherical crowns in low‐latitude areas. This study utilized the Spatially Explicit Individual‐Based Dynamic Global Vegetation Model to analyze the impact of crown morphology on competition and ecosystem productivity.
Hisashi Sato, Akihiro Sumida
wiley +1 more source

Provenance Variation in Functional Traits of European Forest Trees: Meta‐Analysis Reveals Effects of Taxa and Age Despite Critical Research Gaps

Ecology and Evolution, Volume 15, Issue 8, August 2025.
This meta‐analysis on intraspecific variation in European trees studied the frequency of provenance variation, provenance–environment interaction, clinal variation along the climate of origin or transfer distance. While identifying trait group specific patterns of variation, research gaps have been identified in terms of age and geographical ...
Samuel Aspalter +4 more
wiley +1 more source

Sustainable Tourism and SDGs in the South Caucasus

Sustainable Development, Volume 33, Issue 4, Page 4867-4883, August 2025.
ABSTRACT This study examines sustainable tourism practices in the South Caucasus region (Armenia, Azerbaijan, and Georgia) through the lens of the United Nations Sustainable Development Goals (SDGs). A scoping literature review was conducted, analyzing academic papers from Scopus and Web of Science databases. Content analysis and expert validation were
Flavio Martins +5 more
wiley +1 more source

Sustainable tourist behavior: A systematic literature review and research agenda

Sustainable Development, Volume 32, Issue 4, Page 3356-3374, August 2024.
Abstract Sustainable tourist behavior is a rapidly growing field within sustainable tourism. This study contributes to this emerging body of knowledge through a systematic literature review combining bibliometric and qualitative analysis of 331 publications.
Jiawei Li +3 more
wiley +1 more source

Current obstacles, contemporary practices, and potential solutions for recovery in Vietnam tourism after the COVID-19 pandemic: Tour operators' perspectives. [PDF]