Results 241 to 250 of about 6,489 (302)

Incorporating sampling bias into ENM/SDM permutation tests: new methods and a case study on neotropical ants

Ecography, EarlyView.
Spatial sampling bias in occurrence data can generate spurious environmental associations in models of species distributions and ecological niches, and can also undermine inferences based on permutation tests made using these models. Geographic randomization tests are often used to generate distributions of expected behavior under the null hypothesis ...
Dan L. Warren, Alexandre Cassadei‐Ferreira, Evan P. Economo, Russell Dinnage, Jamie M. Kass   +4 more
wiley   +1 more source

Supervised and Unsupervised Learning with Numerical Computation for the Wolfram Cellular Automata. [PDF]

Entropy (Basel)
Tuo K, Deng S, Yang Y, Wang Y, Wang Q, Li W, Zhang W.   +6 more
europepmc   +1 more source

Mixing Behavior of Natural Gas and Hydrogen in a High‐Efficiency Vane (HEV) Static Mixer

Energy Science &Engineering, EarlyView.
Static mixers play a crucial role in the safe transport of hydrogen‐blended natural gas. Computational fluid dynamics (CFD) was employed to investigate the effects of structural parameters of the HEV static mixer on the mixing behavior and homogeneity of natural gas and hydrogen. The modeling approach was well validated against experimental data.
Xiang Zhou, Jun Zheng, Weiqing Xu, Dewen Kong, Yan Shi, Maolin Cai   +5 more
wiley   +1 more source

Transient dynamics and nonlinear fitness: A matrix approach to pulse and press perturbation. [PDF]

Ecology
Jaggi H, Tuljapurkar S, Zuo W, Gascoigne SJL, Kajin M, Salguero-Gómez R.   +5 more
europepmc   +1 more source

Intraday Functional PCA Forecasting of Cryptocurrency Returns

Journal of Forecasting, EarlyView.
ABSTRACT We study the functional PCA (FPCA) forecasting method in application to functions of intraday returns on Bitcoin. We show that improved interval forecasts of future return functions are obtained when the conditional heteroscedasticity of return functions is taken into account.
Joann Jasiak, Cheng Zhong
wiley   +1 more source

Mathematical Comparison of Time-Based and Stroke-Based Fatigue Models in Elite Sprint Cycling: Convergence Analysis and Practical Applications. [PDF]

Scand J Med Sci Sports
Dunst AK, Scharf V, Ueberschär O.
europepmc   +1 more source

Forecasting Volatility of Commodity, Currency, and Stock Markets: Evidence From Markov‐Switching Multifractal Models

Journal of Forecasting, EarlyView.
ABSTRACT This paper adopts a bivariate Markov‐switching multifractal (BMSM) model to reexamine comovement in SV between commodity, foreign exchange (FX), and stock markets. After the 2007–2008 global financial crisis understanding volatility linkages and the correlation structure between these markets becomes very important for risk analysts, portfolio
Ruipeng Liu, Mawuli Segnon, Oguzhan Cepni, Rangan Gupta   +3 more
wiley   +1 more source

ADP-Net: a hierarchical attention-diffusion-prediction framework for human trajectory prediction. [PDF]

Front Artif Intell
Zhang Z, Xiao S, Yu Z.
europepmc   +1 more source

Evaluating Forecasts at Multiple Horizons: An Extension of the Diebold–Mariano Approach

Journal of Forecasting, EarlyView.
ABSTRACT Forecast accuracy tests are fundamental tools for comparing competing predictive models. The widely used Diebold–Mariano (DM) test assesses whether differences in forecast errors are statistically significant. However, its standard form is limited to pairwise comparisons at a single forecast horizon.
Andrew Grant, Matus Mrazik, Steve Satchell   +2 more
wiley   +1 more source

Comparative Outcomes of Transabdominal Preperitoneal and Totally Extraperitoneal Laparoscopic Inguinal Hernia Repair: A Retrospective Cohort Study. [PDF]

Cureus
Jarupla SN, Vadthya G, Naik AK, Dixit H, Pillai P, Managutti A, Gupta S.   +6 more
europepmc   +1 more source