Results 81 to 90 of about 42,233 (256)
Investigation of Stray‐Light Patterns in the eROSITA X‐Ray Cameras
Astronomische Nachrichten, EarlyView.ABSTRACT eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the soft X‐ray instrument aboard the Spectrum‐Roentgen‐Gamma (SRG) mission, developed under the responsibility of the Max Planck Institute for Extraterrestrial Physics (MPE).
Veronika Stieglitz +4 more
wiley +1 more source
Multimodality and the GARCH Likelihood [PDF]
We investigate several aspects of GARCH models which are relevant for empirical applications. In particular, we note that the inclusion of a dummy variable as regressor can lead to multimodality in the GARCH likelihood.
Jurgen A. Doornik, Marius Ooms
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Biotechnology and Bioengineering, EarlyView.ABSTRACT Single‐stranded DNA (ssDNA) solutions are promising innovations shaping the future of genetic research and medical therapies. In principle, biotechnological mass production of ssDNA can be achieved using Escherichia coli in a high‐cell density fed‐batch process by secreting phagemid particles derived from the filamentous M13 bacteriophages ...
Nathalie Hafner +4 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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Do Commodity Prices and Energy Markets Drive Asymmetric Volatility in Biodiversity Finance?
Business Strategy and the Environment, EarlyView.ABSTRACT This study examines symmetric and asymmetric volatility spillovers among biodiversity finance, commodity prices, and energy markets using daily data from 2019 to 2025. We apply the Diebold–Yilmaz time–domain connectedness model, Baruník–Křehlík frequency–domain decomposition, and an asymmetric spillover framework.
Ijaz Younis +4 more
wiley +1 more source
New Medit, 2019 Barley is one of the main crops after wheat and rice. The importance of this product increases because it is an essential input in the livestock and poultry industries.
Behzad Fakari Sardahaie +2 more
doaj +1 more source
Exploring the Financial Perspective in Sustainability Strategies: The Case of the Tourism Industry
Business Strategy and the Environment, EarlyView.ABSTRACT This study examines the relationship between sustainability and corporate financial performance in the tourism sector. To address the mixed and inconclusive evidence in prior research, we develop an integrated theoretical framework that combines stakeholder theory, the resource‐based view, legitimacy theory, and agency theory and distinguishes
Rebecca Levy Orelli +3 more
wiley +1 more source
Estimación de modelos de volatilidad en series de rendimientos bursátiles: 2000-2014
Pensamiento Crítico, 2015 Las series temporales de alta frecuencia observadas en los mercados financieros y cambiarios se caracterizan por ser asimétricas, leptocúrticas, agrupamiento de la volatilidad, mostrar una elevada persistencia en volatilidad, correlaciones en los ...
Rafael Bustamante Romaní
doaj +1 more source
A Continuous Time GARCH Process of Higher Order [PDF]
, 2005 A continuous time GARCH model of order (p,q) is introduced, which is driven by a single Lévy process. It extends many of the features of discrete time GARCH(p,q) processes to a continuous time setting.
Lindner, Alexander M. +2 more
core +1 more source
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