Results 31 to 40 of about 143,254 (254)

Domain Concept Clustering Method Based on Graph Entropy Extreme Value Theory [PDF]

open access: yesJisuanji gongcheng, 2020
In domain ontology learning,in order to implement optimal clustering of concepts of the same domain without concept overlapping,this paper introduces the graph entropy extreme value theory and proposes a domain concept clustering method.According to the ...
AN Jingmin, LI Guanyu
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

An application of extreme value theory in estimating liquidity risk

open access: yesEuropean Research on Management and Business Economics, 2017
The last global financial crisis (2007–2008) has highlighted the weaknesses of value at risk (VaR) as a measure of market risk, as this metric by itself does not take liquidity risk into account.
Sonia Benito Muela   +2 more
doaj   +1 more source

A global climatological model of extreme geomagnetic field fluctuations

open access: yesJournal of Space Weather and Space Climate, 2020
This paper presents a multi-parameter global statistical model of extreme horizontal geomagnetic field fluctuations (dBH/dt), which are a useful input to models assessing the risk of geomagnetically induced currents in ground infrastructure.
Rogers Neil C.   +4 more
doaj   +1 more source

Records in Athletics Through Extreme-Value Theory [PDF]

open access: yesSSRN Electronic Journal, 2006
In this paper we shall be interested in two questions on extremes relating to world records in athletics.The first question is: what is the ultimate world record in a specific athletics event (such as the 100m for men or the high jump for women), given today's state of the art?Our second question is: how `good' is a current athletics world record?An ...
Einmahl, John H. J., Magnus, Jan R.
openaire   +6 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Tail Estimates Motivated by Extreme Value Theory [PDF]

open access: yesThe Annals of Statistics, 1984
This paper deals with the problem of estimating the upper tail of a distribution function. The proposed estimator is based on the upper m order statistics from a random sample of size n (m\(\to \infty\), m/n\(\to 0\) as \(n\to \infty)\) and is shown to be consistent for a wide class of distribution functions.
Davis, Richard, Resnick, Sidney
openaire   +3 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Intuitionistic fuzzy probability and two theorems from extreme value theory [PDF]

open access: yesNotes on IFS
The aim of this contribution is to formulate a variation of Fisher–Tipett–Gnedenko theorem and a variation of Pickand—Balkema—de Haan theorem for intuitionistic fuzzy observables using an intuitionistic fuzzy probability.
Katarína Čunderlíková
doaj   +1 more source

Characterizing Wind Power Forecast Error Using Extreme Value Theory and Copulas

open access: yesIEEE Access, 2022
Wind energy is one of the fastest-growing renewable energy sources in the world. However, wind power is variable in all timescales. This variability is difficult to predict with perfect certainty, with potentially significant financial implications when ...
Ndamulelo Mararakanye   +2 more
doaj   +1 more source

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