Results 111 to 120 of about 3,960 (256)

Drift Estimation for Stochastic Partial Differential Equation Driven by Fractional Brownian Motion

Mathematics
This paper presents a systematic asymptotic analysis of the least squares estimator (LSE) for the drift parameter in a fractional stochastic heat equation driven by fractional Brownian motion.
Hongsheng Qi, Lili Gao, Litan Yan
doaj   +1 more source

Integrating experimental and observational approaches facilitates scaling species interactions to biodiversity patterns

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract To investigate how niche and fitness differences determine the outcome of species interactions and shape local biodiversity patterns, research has typically focused on either simplified experimental systems that test specific mechanisms or observational studies where ...
Jared D. Huxley, William D. Bowman, Marko J. Spasojevic   +2 more
wiley   +1 more source

Intraspecific variability in feather moult extent declines under both low and high constraints

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Intraspecific trait variability (ITV) is a fundamental feature of biological populations and the raw material upon which natural selection acts, yet its drivers remain poorly understood.
Aylon Steinberg, Yosef Kiat
wiley   +1 more source

Optimal deep learning activity recognition pipeline using animal bio‐logging data

Methods in Ecology and Evolution, EarlyView.
Abstract Animal activity recognition using supervised machine learning on bio‐logging data has revolutionized behavioural studies on wildlife and livestock over the past decade. These studies' analytic pipelines differ substantially though, being based on various sensors, features, algorithms and hyperparameter values, which has caused suboptimal or ...
Jasper A. J. Eikelboom
wiley   +1 more source

Terrain Synthesis and Authoring based on Iso‐Contours

Computer Graphics Forum, EarlyView.
Abstract Digital terrains are central to realistic landscape depiction, yet authoring tools must balance perceptual realism with intuitive artistic control. We propose a compact vector‐based representation that models terrain as nested iso‐contours, inspired by geomorphology and cartography.
B. Huftier, H. Schott, E. Galin, O. Argudo, A. Peytavie, E. Guérin   +5 more
wiley   +1 more source

Translocation of livestock‐raiding lions under specific conditions can mitigate conflict

Conservation Science and Practice, EarlyView.
Human‐wildlife conflict is a pervasive threat that imperils many carnivore species worldwide, and although translocation is often used as a conflict mitigation strategy, it is widely regarded as ineffective. Here, we demonstrate that careful selection of suitable release sites can improve outcomes, as 80% of stock‐raiding lion translocations in ...
Willem D. Briers‐Louw, João Almeida, Carlos Lopes Pereira, Hugo Pereira, Hagnésio Chiponde, Peter Lindsey, Tamar Kendon, Dário Ngalijuane, Holly Rosier, Jo Taylor, Ellery Worth, Marnus Roodbol, Eugenio Manhiça, David Gaynor, Alison Leslie, Vincent N. Naude   +15 more
wiley   +1 more source

Fuzzy Pricing and Empirical Analysis of Binary Options Under Long Memory

Axioms
To address the limitations of traditional binary option pricing models in capturing the long-range dependence characteristics of financial time series and in neglecting the cognitive fuzziness of parameters, this paper proposes an innovative pricing ...
Tao Yu, Zhuoxi Yu, Xianwei Lin, Zhiqiang Hua   +3 more
doaj   +1 more source

The Role of Index Fund Ownership in the Era of Say‐on‐Pay

Financial Management, EarlyView.
ABSTRACT We examine whether and how index funds influence executive compensation in the post‐Say‐on‐Pay era. Using the annual reconstitution of the Russell indexes as a source of exogenous variation in index fund ownership, we document a causal effect of index ownership on CEO pay structure.
Kiseo Chung, Hwanki Brian Kim
wiley   +1 more source

Life Cycle Consumption and Portfolio Choice Under Real Interest Rate Risk

Financial Management, EarlyView.
ABSTRACT We set up a life cycle model with real interest rate risk to demonstrate that real interest rates have implications for optimal household consumption and investments. Lower interest rates lead to higher optimal stock investments and lower consumption.
Marcel Fischer, Natascha Jankowski
wiley   +1 more source

Fractional Poisson Process for Estimation of Capacity Degradation in Li-Ion Batteries by Walk Sequences

Fractal and Fractional
Each charging/discharging cycle leads to a gradual decrease in the battery’s capacity. The degradation of capacity in lithium-ion batteries represents a non-monotonous process with random jumps.
Jing Shi, Feng Liu, Aleksey Kudreyko, Zhengyang Wu, Wanqing Song   +4 more
doaj   +1 more source