Results 81 to 90 of about 10,202,946 (277)
Chemistry – A European Journal, EarlyView.The article describes the synthesis and molecular transformations of a silica‐supported bis(phosphine)methylplatinum(II) complex under reactive (H2, CO) and inert gas atmospheres. The focus lies on the stabilizing effect of the sterically non‐demanding trimethylphosphine ligand, which alters the reactivity of the surface sites, compared to other ...
Lea S. Kopietz +6 more
wiley +1 more source
Empirical Results of Modeling EUR/RON Exchange Rate using ARCH, GARCH, EGARCH, TARCH and PARCH models [PDF]
Revista Română de Statistică, 2017 The aim of this study consists in examining the changes in the volatility of daily returns of EUR/RON exchange rate using on the one hand symmetric GARCH models (ARCH and GARCH) and on the other hand the asymmetric GARCH models (EGARCH, TARCH and PARCH),
Andreea – Cristina PETRICĂ +1 more
doaj
Wake me up before you GO-GARCH [PDF]
In this paper we present a new three-step approach to the estimation of Generalized Orthogonal GARCH (GO-GARCH) models, as proposed by van der Weide (2002).
Boswijk, H.P., Weide, R. van der
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Chemistry – A European Journal, EarlyView.ESM‐RISM is applied to model electrochemical interfaces and benchmarked against Poisson–Boltzmann and molecular dynamics results. Density profiles, differential capacitance, and adsorption energetics at the gold–electrolyte interface are analyzed, highlighting the capabilities of this implicit electrolyte framework.
Alessandro Mangiameli +1 more
wiley +1 more source
, 2010 碩士本文研究對象為台灣加權股價指數、美元兌新台幣匯率、台積電股價、新竹商銀股價等日資料，分別以Gaussian GARCH、GARCH-t、GARCH-NoVaS等3種模型來進行實證，並以MAD作為比較基準，探討當金融資產報酬率存在高峰厚尾現象時，對於日報酬平方而言，何種模型的預測能力較佳。 實證結果證明GARCH-NoVaS模型的預測能力較Gaussian GARCH以及GARCH-t為佳，亦即當金融資產報酬率存在高峰態與厚尾現象時，GARCH-NoVaS不僅可以解決Gaussian ...
蔡宗和; Tsai, Tsung-ho
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Chemie Ingenieur Technik, EarlyView.This study explores the process chain for reverse engineering and additive manufacturing of a water pump impeller in a process plant. Key aspects include digital twin creation, CAD redesign, material certification, Hirtisation postprocessing, and performance testing. Insights highlight iterative design for improved precision and reliability.
Michael Stadler +3 more
wiley +1 more source
Regime switching GARCH models [PDF]
We develop univariate regime-switching GARCH (RS-GARCH) models wherein the conditional variance switches in time from one GARCH process to another. The switching is governed by a time-varying probability, specified as a function of past information.
Luc, BAUWENS +2 more
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Chemie Ingenieur Technik, EarlyView.This study evaluates how small water impurities—typical in ammonia cracking feedstock—affect catalyst performance at elevated pressures and temperatures. By decoupling permanent degradation from reversible inhibition, the findings highlight trace water as a significant factor for reliable catalyst screening and industrial ammonia cracking scale‐up ...
Bruno V. P. Lago +6 more
wiley +1 more source
Asymmetric Multivariate Normal Mixture GARCH [PDF]
An asymmetric multivariate generalization of the recently proposed class of normal mixture GARCH models is developed. Issues of parametrization and estimation are discussed.
Markus Haas +2 more
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A Fast and Highly Stable Aqueous Calcium‐Ion Battery for Sustainable Energy Storage
ChemSusChem, Volume 18, Issue 6, March 15, 2025.Aqueous batteries provide a low‐cost, safer alternative to lithium‐ion batteries, but their viability is often limited by rapid electrode degradation. This study shows that replacing K+ with divalent Ca2+ ions in the electrolyte significantly boosts the stability of both copper hexacyanoferrate cathodes and polyimide anodes, enabling fast‐charging ...
Raphael L. Streng +4 more
wiley +1 more source