Results 71 to 80 of about 53,168 (261)
Growing the efficient frontier on panel trees
Journal of Financial EconomicsWe introduce a new class of tree-based models, P-Trees, for analyzing (unbalanced) panel of individual asset returns, generalizing high-dimensional sorting with economic guidance and interpretability. Under the mean-variance efficient framework, P-Trees construct test assets that significantly advance the efficient frontier compared to commonly used ...
Lin William Cong +3 more
openaire +2 more sources
Advances in Sustainable and Wearable Textile Based Soft Robotics
Advanced Functional Materials, EarlyView.This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas +6 more
wiley +1 more source
Optimal dynamic mean-variance asset-liability management under the Heston model
Advances in Difference Equations, 2018 This paper studies a continuous-time mean-variance asset-liability management problem under the Heston model. Specifically, an asset-liability manager is allowed to invest in a risk-free asset and a risky asset whose price process is governed by the ...
Jian Pan, Zujin Zhang, Xiangying Zhou
doaj +1 more source
Advanced Functional Materials, EarlyView.Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska +5 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Atomic layer deposition is used to conformally surface engineer polymeric membranes to fabricate inorganic–organic hybrid membranes. These membranes have exceptionally strong attraction toward water even in high oil containing emulsions, which leads to an extremely strong hydration layer at the interface.
Bratin Sengupta +8 more
wiley +1 more source
Magnesium‐Based Transient Bioelectronics, Bio‐Optics and Bio‐Scaffolds
Advanced Functional Materials, EarlyView.This paper reviews the state of the art and recent advances in magnesium‐based thin‐film, foils, and scaffolds for applications in transient bio‐optics, bioelectronics and tissue engineering. The design principles, fabrication methods, material properties, and integration strategies are discussed in detail.
Massimo Mariello, Yves Leterrier
wiley +1 more source
A Dynamic Optimization Model for the Natural Gas Revenues [PDF]
فصلنامه پژوهشهای اقتصادی ایران, 2007 In this paper we study one of the most important challenges facing the Iranian Oil authorities: The allocation of natural gas reserves to different uses like exports, petrochemical plants, and injection to oil reserves for enhancing recovery factor.
Ahmad Jafari Samimi, Toraj Dehghani
doaj
Advanced Functional Materials, EarlyView.Geometry‐driven design of soft cellular metamaterials is systematically investigated by combining experiments, finite element modeling, and statistical prediction. The study quantifies how unit cell geometry and material properties govern stiffness, instability, densification, and energy absorption.
Alice Berardo +4 more
wiley +1 more source
ECONOMICSThe main of the study is to comprehend how the mean variance efficient frontier method may be used in conjunction with Markowitz portfolio theory to produce an optimal portfolio.
Mallieswari R. +5 more
doaj +1 more source
Performance Evolution Pattern [PDF]
مطالعات مدیریت بهبود و تحول, 2012 In this paper with the aims to examine the changes in productivity, two well-known techniques of evaluation over time studied that window Analysis and Malmquist productivity index and by selecting the appropriate length for the windows, the window ...
Mohammad Rahim Ramazanian +2 more
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