Results 91 to 100 of about 278,646 (326)
Fruit‐quality tradeoffs generate asymmetry in plant reliance on mutualistic frugivores
Oikos, EarlyView.Seed dispersal is a fundamental ecological process influencing the evolution of plant life‐history strategies. In fleshy‐fruited plants dispersed by mutualistic frugivores, variation in fruit traits among closely related species may shape the temporal and spatial dynamics of dispersal events critical to population success.
João Vitor S. Messeder, Tomás A. Carlo
wiley +1 more source
Algebras with dual basis(带有对偶基的代数)
Zhejiang Daxue xuebao. Lixue ban, 2002 特征为零域上的中心单代数具有很好的性质是因为它们都有对偶基;而当域的特征不为零时,同样是中心单代数,情况就不一样了,主要是它们不具有对偶基.因而给出了在域F的特征p为不零情况下,单分离代数存在对偶基的充分必要条件是很有趣的.设A是域F上的n维单分离代数,且其特征p不整除n,则对A的任何一组基{a1, a2, …, an},都存在惟一的对偶基.如果C是A的中心,A在C上的维数不能被p整除,则其任何基都存在对偶基.我们还利用对偶基来刻画这样的分离代数的中心,进而推广了特征为零时的Whitehead引理.最后,
WUZhi-xiang(吴志祥)
doaj +1 more source
New Techniques for Computing Geometric Index
, 2017 We introduce \textcolor{red}{general} new techniques for computing the geometric index of a link $L$ in the interior of a solid torus $T$. These techniques simplify and unify previous ad hoc methods used to compute the geometric index in specific ...
Andrist, Kathryn B. +3 more
core +1 more source
Oikos, EarlyView.Competition theory suggests that interspecific prey competition can result in changes to the dietary niche, but obtaining timeseries of data from sympatric species experiencing temporal variation in competition is challenging. Scotland is an important area for two species of seals, but over the past 20 years, populations of harbour seals Phoca vitulina
Izzy Langley +7 more
wiley +1 more source
PLoS ONE, 2014 BackgroundDisembodiment is a core feature of depersonalization disorder (DPD). Given the narratives of DPD patients about their disembodiment and emotional numbing and neurobiological findings of an inhibition of insular activity, DPD may be considered ...
Matthias Michal +7 more
doaj +1 more source
Trapped in the web: network architectures spread coevolution and shape adaptation
Oikos, EarlyView.Adaptation is critical for biodiversity to persist under global change. Within ecological communities, species often face tradeoffs between adapting to shifting abiotic conditions and navigating the complex selective pressures imposed by interaction networks.
Alexandre Fuster‐ Calvo +5 more
wiley +1 more source
Prenatal Diagnosis, EarlyView.ABSTRACT Objective The heterogeneity of fetal surgery has led to variability in the nature and frequency of fetal instability. Understanding these differences is critical for optimizing management. Methods We reviewed all fetal atrial septal interventions (FASI) and fetoscopic myelomeningocele (fMMC) repairs with fetal instability performed at our ...
Claire A. Naus +13 more
wiley +1 more source
Semiotic Interpretation of Lotka–Volterra Model and its Usage in Knowledge Management
SHS Web of Conferences, 2016 Convergence of NBICS-technologies makes relevant the exact definition of objective goals’ spectrum, which pursued this self-organizing system of technologies.
Evdokimov Kirill E. +3 more
doaj +1 more source
Sustainable Development, EarlyView.ABSTRACT The Social and Solidarity Economy (SSE) offers strong potential for sustainable development in low‐income regions, yet its enterprises often operate with scarce resources, weak monitoring systems, and limited visibility. These constraints hinder both their capacity to demonstrate contributions to sustainable development (SD) and their own ...
Maria‐del‐Mar Magallón +1 more
wiley +1 more source
Contract Farming and Children's Education: Evidence From Maize Producers in Ghana
Sustainable Development, EarlyView.ABSTRACT The institution of contract farming (CF) has continued to proliferate in the small farm sector of developing countries. While its effects on smallholders across welfare outcomes such as income and food security have been well documented, there are growing concerns about its broader social implications especially on children.
Francis E. Ndip +2 more
wiley +1 more source