Results 121 to 130 of about 57,800 (281)

Absolute scaling of small‐ and wide‐angle X‐ray scattering images recorded with short duration X‐ray pulses on a large area fiber‐taper X‐ray detector

open access: yesJournal of Synchrotron Radiation, EarlyView.
An X‐ray scattering setup designed to capture small‐ and wide‐angle X‐ray scattering on a single, large area detector features a partially transmissive beamstop that facilitates non‐invasive recording of X‐ray beam position and intensity during acquisition of X‐ray scattering images.
Hyun Sun Cho   +3 more
wiley   +1 more source

Integrated Energy Efficient Train Trajectory Planning Optimization for Urban Rail Transit Lines Based on MILP

open access: yesKongzhi Yu Xinxi Jishu, 2021
Energy efficient train trajectory planning for urban rail transit lines is a hot topic. One of the key measures to save energy is to reduce tractive energy consumption.
ZHANG Miao   +4 more
doaj  

Particle Swarm Optimization with non-smooth penalty reformulation for a complex portfolio selection problem [PDF]

open access: yes
In the classical model for portfolio selection the risk is measured by the variance of returns. It is well known that, if returns are not elliptically distributed, this may cause inaccurate investment decisions. To address this issue, several alternative
Giovanni Fasano   +2 more
core  

The importance of considering regimes in long‐term asset allocation to real estate

open access: yesReal Estate Economics, EarlyView.
Abstract We investigate the long‐term, regime‐dependent asset allocation of an investor's wealth in a mixed‐asset portfolio that includes publicly traded real estate. We show that augmenting standard VAR models with Markov‐switching features not only improves predictive power for asset returns but also introduces economically meaningful horizon effects
Massimo Guidolin   +2 more
wiley   +1 more source

Non‐Rigid 3D Shape Correspondences: From Foundations to Open Challenges and Opportunities

open access: yesComputer Graphics Forum, EarlyView.
Abstract Estimating correspondences between deformed shape instances is a long‐standing problem in computer graphics; numerous applications, from texture transfer to statistical modelling, rely on recovering an accurate correspondence map. Many methods have thus been proposed to tackle this challenging problem from varying perspectives, depending on ...
A. Zhuravlev   +14 more
wiley   +1 more source

Reaction network reduction with mixed-integer nonlinear programming

open access: yes, 2021
In this study, a Mixed-Integer Nonlinear programming (MINLP) problem is formulated for reaction network model reduction. The MINLP problem introduces binary variables for the existence of rate constants in addition to traditional continuous variables to minimize the prediction error.
ERTÜRK, Emrullah   +2 more
openaire   +3 more sources

A decomposition-based design optimization method with applications [PDF]

open access: yes
A two-level design optimization metholology is described. A progress report of its application to Printed Wiring Board (PWB) assembly examples is given.
Azarm, Shapour   +3 more
core   +1 more source

Multi‐period optimal bidding strategy with energy storage

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract We consider a setting where a wind power producer (WPP) bids in a multi‐period ahead electricity market. The new elements we take into account are (i) the integration of electricity storage devices, (ii) the extension from single‐period to multi‐period optimal bidding, (iii) the implementation of a short‐sighted strategy versus a far‐sighted ...
Azin Khaleghi, Wouter Baar, Dario Bauso
wiley   +1 more source

A genetic algorithm simheuristic for solving the stochastic project portfolio selection problem with portfolio reliability constraints

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract In response to the increasing complexity of modern products, dynamic markets, and intensified competition, project‐based organizations are actively seeking methodologies to efficiently manage their expanding project portfolios. This paper analyzes the project portfolio selection problem in uncertain environments. Despite recent advances in the
Miguel Saiz   +3 more
wiley   +1 more source

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