Results 51 to 60 of about 4,775,724 (235)

Time‐Frequency Market‐State Learning for Execution‐Aware Directional Prediction: Evidence From the CSI 300 Index

open access: yesInternational Studies of Economics, EarlyView.
ABSTRACT Financial markets can be viewed as multiscale information systems in which short‐lived disturbances, recurrent temporal patterns, liquidity conditions, and execution constraints jointly shape index price movements. This study develops an empirical‐wavelet‐and‐Fourier time‐frequency (EFT) feature block integrated with a ConvTransformer ...
Yi Chen, Ranzhe Jing, Qiang Li
wiley   +1 more source

PSYNDEX Tests Review für BMT - BILDUNGSMOTIVATIONSTEST

open access: yes, 1988
This is a PSYNDEX Tests Review of BMT - BILDUNGSMOTIVATIONSTEST. PSYNDEX Tests Reviews are written in German and describe and evaluate psychological and educational tests used in the German-speaking countries.
Kroiss, Josef
core   +1 more source

Land Degradation Pathways of Open‐Pit and Underground Mining in Karst Regions: A Spatial Indicator Assessment

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Mining in the karst regions of southwest China threatens ecosystem stability and accelerates land degradation. Regional evaluation rarely distinguishes between degradation pathways in open‐pit and underground operations, due to spatial heterogeneity and geomorphological confounding effects.
Xiaofu Chen   +5 more
wiley   +1 more source

PSYNDEX Tests Review für MDT 8 - MATHEMATIK-DIDAKTISCHE TESTS FÜR DIE 8. SCHULSTUFE

open access: yes, 1983
This is a PSYNDEX Tests Review of MDT 8 - MATHEMATIK-DIDAKTISCHE TESTS FÜR DIE 8. SCHULSTUFE. PSYNDEX Tests Reviews are written in German and describe and evaluate psychological and educational tests used in the German-speaking countries.
Lukesch, Helmut
core   +1 more source

Intercomparison of carbon‐13 and carbon‐14 tracer approaches for estimating marine calcification and net primary production

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Accurate measurements of phytoplankton net primary production (NPP) and calcification are essential for quantifying marine carbon cycling, yet in situ calcification rates remain poorly constrained. We compared 13C‐ and 14C‐based tracer methods for NPP in laboratory cultures of the diatom Chaetoceros tenuissimus and the coccolithophore ...
Chloe L. Smith   +4 more
wiley   +1 more source

"Probability Distribution and Option Pricing for Drawdown in a Stochastic Volatility Environment" [PDF]

open access: yes
This paper studies the probability distribution and option pricing for drawdown in a stochastic volatility environment. Their analytical approximation formulas are derived by the application of a singular perturbation method (Fouque et al. [7]).
Kyo Yamamoto   +2 more
core  

PSYNDEX Tests Review für LFB-FOT - LEHRERFRAGEBOGEN ZUM EINSATZ FEHLERORIENTIERTER TESTS

open access: yes, 1989
This is a PSYNDEX Tests Review of LFB-FOT - LEHRERFRAGEBOGEN ZUM EINSATZ FEHLERORIENTIERTER TESTS. PSYNDEX Tests Reviews are written in German and describe and evaluate psychological and educational tests used in the German-speaking countries.
Eberwein, Manfred
core   +1 more source

Nonlinear interactive effects of temperature and soil moisture on plant biomass and carbon fluxes

open access: yesOikos, EarlyView.
Climate warming is affecting plant growth and CO2 fluxes in high‐latitude ecosystems. However, soil moisture – and how it responds to warming – can alter the shape of the relationship between temperature and both plant performance and ecosystem processes. We conducted a microcosm experiment to test the interactive effects of temperature, soil moisture,
Radim Šarlej   +6 more
wiley   +1 more source

PSYNDEX Tests Review für WDG - WIENER DETERMINATIONSGERÄT

open access: yes, 1988
This is a PSYNDEX Tests Review of WDG - WIENER DETERMINATIONSGERÄT. PSYNDEX Tests Reviews are written in German and describe and evaluate psychological and educational tests used in the German-speaking countries.
Eberwein, Manfred
core   +1 more source

A Functional Flows Framework for the Terminal Great Salt Lake Basin: Can We Have Our Lake and Drink It Too?

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Terminal basins provide unique aquatic environments that are often highly sensitive to streamflow contributions, making them a focal point for environmental water management. However, the water needs for terminal lake, wetland, and river ecosystems, and how they relate, remain a fundamental knowledge gap that constrains our ability to ...
Belize Lane   +9 more
wiley   +1 more source

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