Results 191 to 200 of about 14,908,682 (295)

Risk premia reconsidered: Illiquidity and selection bias for stocks and corporate bonds in the pre‐First World War period

The Economic History Review, EarlyView.
Abstract Financial history is plagued by a visibility trap. Using the Brussels Stock Exchange (1850–1913), we demonstrate that asset illiquidity introduced selection bias, which systematically inflated historical risk premia. Applying a latent return model, we argue that correcting for this illiquidity decreases the equity and corporate bond risk ...
Justin Case, Eline Poelmans, Gertjan Verdickt   +2 more
wiley   +1 more source

Assessment of goose-beaked whale responses to mid-frequency active sonar using a hierarchical hidden Markov model. [PDF]

Mov Ecol
DeRuiter SL, Falcone EA, Coates SN, Rone BK, Sweeney DA, Dolan KA, Jarvis SM, Andrews RD, Watwood SL, Schorr GS.   +9 more
europepmc   +1 more source

Under the cover of darkness: Foraging behaviour increases on cloudy, new moon nights in a pelagic seabird

Ibis, EarlyView.
While many visual predators feed exclusively during the day, others exploit foraging opportunities at night, although the efficiency with which they do so is strongly influenced by ambient light levels. We investigated the influence of variation in nocturnal light on the foraging behaviour of a small pelagic seabird, the European Storm‐petrel ...
Darren Wilkinson, Adam Kane, Mark Jessopp, John L. Quinn   +3 more
wiley   +1 more source

State-specific disruptions of dynamic functional connectivity in young migraine without aura: a hidden Markov model approach. [PDF]

Front Neurosci
Xu C, Zhan S, Tan W, Cheng JM, Gong S, Lu S, Wang H, Liu F, Jiang S, Wang W, Yang Y.   +10 more
europepmc   +1 more source

Measuring the Stringency of Building Height Regulations

International Economic Review, EarlyView.
ABSTRACT This study proposes a novel methodology to measure the stringency of building height regulations. This measure gauges the difference in building heights with and without regulations. The primary challenge is to recover unobserved building heights in the absence of regulations.
Yusuke Adachi
wiley   +1 more source

The hidden Markov model and its applications in bioinformatics analysis. [PDF]

Genes Dis
Ma Y, Chen H, Kang J, Guo X, Sun C, Xu J, Tao J, Wei S, Dong Y, Tian H, Lv W, Jia Z, Bi S, Shang Z, Zhang C, Lv H, Jiang Y, Zhang M.   +17 more
europepmc   +1 more source

A deeper look into the diversity of suckermouth catfishes (Mochockidae: Chiloglanis Peters 1868) of southern Africa, with the description of four new species

Journal of Fish Biology, EarlyView.
Abstract Suckermouth catfishes of the genus Chiloglanis Peters 1868 are small and predominantly rheophilic fishes endemic to Africa. This genus is quite diverse, with over 70 species distributed across most river systems on the continent, except for the Cape Fold ecoregion and most of northern Africa.
Tadiwa Isaac Mutizwa, Tholoana Ntokoane, Albert Chakona   +2 more
wiley   +1 more source

Noise reduction of low-dose electron holograms using the wavelet hidden Markov model. [PDF]

Microscopy (Oxf)
Tomita Y, Midoh Y, Tamaoka T, Murakami Y.   +3 more
europepmc   +1 more source

TaANT11‐4A enhances grain yield by orchestrating photosynthesis and carbohydrate metabolism through direct transcriptional activation

Journal of Integrative Plant Biology, EarlyView.
TaANT11‐4A is a positive regulator of wheat grain size and yield, directly activating TaEGY2, TaAAE1, and TaAAE2 to enhance photosynthesis and carbohydrate metabolism. The favorable Hap2 haplotype increases TaANT11‐4A expression and grain size, providing a genetic resource for breeding higher‐yielding wheat varieties.
Pengpeng Zhang, Jingjing Wen, Shan Gao, Jiajun Ma, Jiahui Jin, Xiaofei Ma, Wen‐Ting Liu, Juan Li, De‐Jun Han, Yue‐Qiang Zhang, Kun‐Ming Chen   +10 more
wiley   +1 more source

Unveiling state-specific neural dynamics in migraine with and without depressive symptom: a hidden Markov model and interpretable machine learning approach. [PDF]

J Headache Pain
Zhang Z, Xie C, Dong L, Zeng L, Sun M, Fu Q, Ouyang X, Yan Q, Wang T, Zhang Q, Wang X, Zhao L.   +11 more
europepmc   +1 more source