Results 61 to 70 of about 4,569,395 (350)

BRIDGING TRADITION AND INNOVATION: A LITERATURE REVIEW ON PORTFOLIO OPTIMIZATION

Annals of the University of Oradea: Economic Science
Portfolio optimization plays a crucial role in investment decision-making by balancing risk and return objectives. With the aim of improving portfolio performance, while enhancing risk management, this literature review explores traditional and ...
Ștefan RUSU, Marcel BOLOȘ
doaj   +1 more source

s‐Orbital Mediated Metavalent Bonding Enables State‐Of‐The‐Art n‐Type AgBiSe2 Thermoelectrics

Advanced Functional Materials, EarlyView.
Metavalent bonding (MVB) underpins the exceptional property portfolio of chalcogenides. Typical MVB solids are mainly found in p‐bonded systems. This work reveals that MVB can also be formed with s‐p orbital interactions upon forming a single‐electron σ‐bond, as exemplified in AgBiSe2.
Binrong Huang, Dasol Kim, Yuan Yu, Jinxuan Zhong, Jianbo Zhu, Yaoling Shen, Yu Guo, Moran Wang, Jiawei Huang, Tu Lyu, Nan Lin, Yongsheng Zhang, Matthias Wuttig, Lipeng Hu   +13 more
wiley   +1 more source

Two-Stage Portfolio Optimization Integrating Optimal Sharp Ratio Measure and Ensemble Learning

IEEE Access, 2023
The traditional portfolio theory has relied heavily on historical asset returns while ignoring future information. Based on ensemble learning and maximum Sharpe ratio portfolio theory, this paper proposes a two-stage portfolio optimization method by ...
Zhongbao Zhou, Zhengyang Song, Tiantian Ren, Lean Yu   +3 more
doaj   +1 more source

Engineering Aging: Approaches to Model and Deconstruct Biological Complexity

Advanced Materials, EarlyView.
The macro‐experiences of aging are the result of an accumulation of micro‐changes that occur over time. Abstract The disparity between the global increase in life expectancy and the steady decline in health outcomes with age has been a major driver for developing new ways to research aging.
Habib Joukhdar, Sunny Shinchen Lee, Thomas R. Cox, Yu Suk Choi, Steven G. Wise, Jennifer L. Young, Giselle C. Yeo, Khoon S. Lim   +7 more
wiley   +1 more source

Entropic Data Envelopment Analysis: A Diversification Approach for Portfolio Optimization

Entropy, 2017
Recently, different methods have been proposed for portfolio optimization and decision making on investment issues. This article aims to present a new method for portfolio formation based on Data Envelopment Analysis (DEA) and Entropy function.
Paulo Rotela Junior, Luiz Célio Souza Rocha, Giancarlo Aquila, Pedro Paulo Balestrassi, Rogério Santana Peruchi, Liviam Soares Lacerda   +5 more
doaj   +1 more source

Sustainable Liquid Metal Composites for Soft Electronics and E‐Waste Reduction

Advanced Materials, EarlyView.
Liquid metal (LM) composites embody recyclability, repairability, renewability, and resilience (4R), offering a sustainable route for soft electronics. With exceptional conductivity, stretchability, and eco‐friendly recovery, these systems enable closed‐loop lifecycles and reduce e‐waste.
Abdollah Hajalilou, Elahe Parvini, Carmel Majidi   +2 more
wiley   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source

Risk management under Omega measure [PDF]

, 2017
We prove that the Omega measure, which considers all moments when assessing portfolio performance, is equivalent to the widely used Sharpe ratio under jointly elliptic distributions of returns. Portfolio optimization of the Sharpe ratio is then explored,
Metel, Michael R., Pirvu, Traian A., Wong, Julian   +2 more
core   +2 more sources

Preparation of Model Surfaces to Mimic Porous Cellulose Structures

Advanced Materials Interfaces, EarlyView.
This study presents 2D ultrathin nanocellulose model surfaces that mimic porous cellulose materials. The surfaces are prepared via a sacrificial templating approach, by spin coating nanocellulose and polystyrene nanoparticles suspension on a substrate, followed by nanoparticle removal.
Tiinamari Seppänen, Kristoffer Meinander, Monika Österberg, Emily D. Cranston, Tekla Tammelin   +4 more
wiley   +1 more source

Semi-Metric Portfolio Optimization: A New Algorithm Reducing Simultaneous Asset Shocks

Econometrics, 2023
This paper proposes a new method for financial portfolio optimization based on reducing simultaneous asset shocks across a collection of assets.
Nick James, Max Menzies, Jennifer Chan
doaj   +1 more source