Results 41 to 50 of about 345 (187)
Coverage‐based rarefaction fails to quantify relative species richness
Oikos, EarlyView.Coverage‐based rarefaction (CBR) is a high‐profile tool for assessing biodiversity that provides relative species richness estimates by leveraging the Good‐Turing index u to interpolate. In contrast to alternatives such as the Shannon and Simpson indices, CBR's main appeal is providing values in units of species. CBR is tested against a series of other
John Alroy
wiley +1 more source
CSRcalculator: A reproducible framework for understanding plant ecological strategies
PLANTS, PEOPLE, PLANET, EarlyView.Understanding how plants respond to environmental change is essential for conserving biodiversity and managing ecosystems under climate change. We developed CSRcalculator, an open‐source platform that brings together major competitor, stress‐tolerator, ruderal (CSR) models to make ecological strategy classification accessible, reproducible and scalable.
Teddy Gaskin +6 more
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.It remains unclear how many plant species are not yet recorded by science. We illustrated the process by which species of the pineapple family in tropical America have been newly described to science to date, and we estimated how many species may still await scientific discovery in this group.
Georg Zizka +4 more
wiley +1 more source
A Study on Algebra of Groups and Rings Structures in Mathematics
Asian Journal of Organic & Medicinal Chemistry, 2021 openaire +1 more source
Supervised Protein Structure Classification Using Topological Persistence With DeltaFold
Proteins: Structure, Function, and Bioinformatics, EarlyView.ABSTRACT Recent advances in protein structure prediction have considerably increased the number of available structures, underscoring the need for scalable and accurate methods to compare and classify this huge amount of data. Current approaches based on sequence alignment or structural superposition often lack sensitivity and/or are computationally ...
Joseph Nardin‐Gennequin +3 more
wiley +1 more source
Impact of Packaging and Recycling Systems on Material Recirculation: A Stage‐Decomposition Model
Packaging Technology and Science, EarlyView.A system‐level view emerges from decomposing recycling into four stages (participation, collection, sorting and process yield), diagnosing constraints and targeting interventions. Cumulative equivalent uses (CEUs) quantify long‐term retention, revealing marginal improvements at high baselines generate disproportionately larger gains than low‐baseline ...
Diogo Figueirinhas +3 more
wiley +1 more source
中文:现代物理学存在标准模型与广义相对论无法自洽兼容、四种基本作用力难以统一、量子场发散、宇宙学常数疑难等关键难题。本文以无极本源、阴阳对偶演化、阴阳双重作用三条太极基础公设作为第一原理,借助抽象代数的群、环、域、模体系搭建阴阳物理系统的数学同构模型,构造二元复标量场,结合无极场完备约束与对称条件,推导出核心耦合常数 K=-1。依托该常数完成氢原子精细结构、兰姆位移、水星近日点进动经典物理结果复核,依据能标层级实现四大基本作用力统一,同时分门类提出14项可通过实验观测检验的物理预言,构建起由基础公理到数理方程、历史现象验证再到前瞻性实验预判的完整理论体系,为基础物理大统一方向提供新的研究思路。 English: Modern physics is faced with core ...
openaire +2 more sources
Low‐order system for eddy growth in the storm track
Quarterly Journal of the Royal Meteorological Society, EarlyView.Reanalysis data for the North Atlantic storm track are used to construct a low‐order model that optimally fits the observed interaction between the mean flow and baroclinic eddies. The resulting model is a certain type of predator–prey model. It explains various properties of the storm track, including why eddies grow linearly with the Eady growth rate,
Maarten H. P. Ambaum, Thomas H. A. Frame
wiley +1 more source
Sliding Motions on Non‐Euclidean State Spaces: A Differential‐Geometric Perspective
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT This paper extends sliding‐mode control theory to nonlinear systems evolving on smooth manifolds. Building on differential geometric methods, we reformulate Filippov's notion of solutions, characterize well‐defined vector fields on quotient spaces, and provide a consistent geometric definition of higher‐order sliding modes.
Fernando Castaños
wiley +1 more source
Journal of Field Robotics, EarlyView.ABSTRACT The design of a hexapod is complex and requires integration between kinematic models, control systems, and sensing. Existing literature has reviewed these sub‐systems in isolation. Since 2021, there has been no review of the field despite significant advancements in soft soil, lunar traversal, and artificial intelligence.
Akhil Rampersad, Bashan Naidoo
wiley +1 more source