Results 71 to 80 of about 17,889,928 (308)

Mixed effect model for absolute log returns of ultra high frequency data [PDF]

open access: yes, 2005
The influence of covariates on absolute log returns of ultra high frequency data is analysed. Therefore we construct a mixed effect model for the absolute log returns. The parameters are estimated in a state space approach.
Haug, Stephan   +3 more
core   +1 more source

Bone‐Inspired Recyclable Composites for Damage‐Tolerant Circular Materials

open access: yesAdvanced Functional Materials, EarlyView.
Bone‐inspired architected composites are developed by combining osteon‐like reinforcements with a recyclable Elium thermoplastic matrix. The hierarchical architecture redirects cracks and promotes energy dissipation, while enabling recovery of intact, aligned, load‐bearing reinforcement units that retain their original stiffness, revealing a route ...
Alessandro Stagni   +4 more
wiley   +1 more source

Risk spillovers between the financial market and macroeconomic sectors under mixed-frequency information: A frequency domain perspective

open access: yesInternational Review of Economics & Finance
We construct the Mixed-Frequency Vector Autoregression of Frequency Domain Decomposition model, labeled as MF-VAR-FDD, to investigates the risk spillovers between financial market and the macroeconomic sectors.
Mengting Li   +3 more
doaj   +1 more source

Modelling the EU Internal Electricity Market: The PRIMES-IEM Model

open access: yesEnergies, 2019
The paper presents a newly built model used to simulate the European Union (EU) internal electricity market and assess market reform policies. The model performs an hourly simulation of all stages of the wholesale markets at a Pan-European scale ...
Maria Kannavou   +2 more
doaj   +1 more source

The World Gas Model: A Multi-Period Mixed Complementarity Model for the Global Natural Gas Market [PDF]

open access: yes
We provide the description and illustrative results of the World Gas Model, a multi-period complementarity model for the global natural gas market. Market players include producers, traders, pipeline and storage operators, LNG liquefiers and regasifiers ...
Ruud Egging   +2 more
core  

An Integrated Oxygen‐Supplying Device and Predictive Multiphysics Model for Extended Ambient Transport of Insulin‐Producing Cells

open access: yesAdvanced Functional Materials, EarlyView.
Cell therapies typically rely on cold‐chain logistics and cryopreservation, limiting access and compromising cell quality. Here, a dual‐chamber device separates an oxygen‐supplying chamber from a hyaluronic acid cargo chamber, sustaining oxygen delivery for over 70 h and enabling ambient‐temperature shipment.
Daniel A. Domingo‐Lopez   +9 more
wiley   +1 more source

Black Market International Proposal [PDF]

open access: yes, 2002
Proposal from Black Market International offering two performance options.

core  

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

open access: yesAdvanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source

Designing and Preparing the Development Model of Marketing in Volleyball Super League of Iran

open access: yesAnnals of Applied Sport Science, 2019
Background. Marketing is essential for any kind of conscious movement in today's market; a market that no longer recognizes either the borders or a particular customer. Objectives. The aim of this research is designing and preparing the development model
ُSiavash Khodaparast Sareshkeh   +3 more
doaj  

An optimal operation method for hydrogen refueling stations considering the electric energy-reserve-hydrogen coupling market environment

open access: yesZhejiang dianli
To enhance the operational revenue of on-site hydrogen production hydrogen refueling stations (HFS), a bi-level stochastic optimization model is proposed, considering the electric energy-reserve-hydrogen coupling market environment. The upper-level model
ZHOU Xin   +4 more
doaj   +1 more source

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