Results 21 to 30 of about 14,082,827 (312)

Integrated OU Processes. [PDF]

open access: yes, 2001
In this paper we study the detailed distributional properties of integrated non-Gaussian OU (intOU) processes. Both exact results and approximate results are given. We emphasise the study of the tail behaviour of the intOU process. Our results have many potential applications in financial economics, for OU processes are used as models of instantaneous ...
Ole E. Barndorff-Nielsen, Neil Shephard
openaire   +2 more sources

Deep Electronic State Regulation through Unidirectional Cascade Electron Transfer Induced by Dual Junction Boosting Electrocatalysis Performance

open access: yesAdvanced Science, 2023
Unidirectional cascade electron transfer induced by multi‐junctions is essential for deep electronic state regulation of the catalytic active sites, while this advanced concept has rarely been investigated in the field of electrocatalysis. In the present
Wenlin Zhang   +5 more
doaj   +1 more source

COINTEGRATION FOR PERIODICALLY INTEGRATED PROCESSES [PDF]

open access: yesEconometric Theory, 2007
Summary: Integration for seasonal time series can take the form of seasonal periodic or nonperiodic integration. When seasonal time series are periodically integrated, we show that any cointegration is either full periodic cointegration or full nonperiodic cointegration, with no possibility of cointegration applying for only some seasons.
Tomas del Barrio Castro, Denise R Osborn
openaire   +2 more sources

Magic of hydrogen spillover: Understanding and application

open access: yesGreen Energy & Environment, 2022
The hydrogen spillover effect (HSPE) plays an important role in heterogeneous catalysis and hydrogen storage as an interfacial phenomenon, which facilitates the improvement of hydrogen storage properties of porous nanomaterials and indirectly or directly
Haifang Shen   +3 more
doaj   +1 more source

On the integration processes of A. Huťa [PDF]

open access: yesJournal of the Australian Mathematical Society, 1963
Huta [1], [2] has given two processes for solving a first order differential equation to sixth order accuracy. His methods are each eight stage Runge-Kutta processes and differ mainly in that the later process has simpler coefficients occurring in it.
openaire   +1 more source

Perpetual Integrals for Lévy Processes [PDF]

open access: yesJournal of Theoretical Probability, 2015
We ask for necessary and sufficient conditions for almost sure finiteness of the perpetual integrals of a Levy process. Zero-one laws are already known for Brownian motion with drift and spectrally one-sided Levy processes. Under the assumption that local times exist, we use fluctuation theory and Jeulin's lemma to prove the zero-one law.
Döring, Leif, Kyprianou, Andreas E.
openaire   +3 more sources

Review of Developments in Plate Heat Exchanger Heat Transfer Enhancement for Single-Phase Applications in Process Industries

open access: yesEnergies, 2023
A plate heat exchanger (PHE) is a modern, effective type of heat transfer equipment capable of increasing heat recuperation and energy efficiency. For PHEs, enhanced methods of heat transfer intensification can be further applied using the analysis and ...
Olga Arsenyeva   +4 more
doaj   +1 more source

Waste heat recovery of the hydrogen–water mixture from high‐temperature water electrolysis by cascade heat pump for steam generation

open access: yesEnergy Science & Engineering, 2023
Waste heat recovery is common in high‐temperature water electrolysis production, but the latent heat from the hydrogen–water mixture is not fully utilized, and the electric heater to generate steam consumes much energy.
Zhicong Fang   +3 more
doaj   +1 more source

Amphiphilic Bowl-Shaped Janus Particles Prepared via Thiol–Ene Click Reaction for Effective Oil–Water Separation

open access: yesNanomaterials, 2023
Janus particles for oil–water separation have attracted widespread attention in recent years. Herein, we prepared a bowl-shaped Janus particle that could rapidly separate oil and water through a thiol–ene click reaction and selective etching.
Xian Qi   +3 more
doaj   +1 more source

A Cogeneration System Based on Solid Oxide and Proton Exchange Membrane Fuel Cells With Hybrid Storage for Off-Grid Applications

open access: yesFrontiers in Energy Research, 2019
Solid oxide fuel cells (SOFC) have developed to a mature technology, able to achieve electrical efficiencies beyond 60%. This makes them particularly suitable for off-grid applications, where SOFCs can supply both electricity and heat at high efficiency.
Francesco Baldi   +4 more
doaj   +1 more source

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