Results 51 to 60 of about 503,543 (339)
"Nonlinear" covariance matrix and portfolio theory for non-Gaussian multivariate distributions
, 1999 This paper offers a precise analytical characterization of the distribution of returns for a portfolio constituted of assets whose returns are described by an arbitrary joint multivariate distribution.
Andersen, J. V. +2 more
core +1 more source
Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities
Advanced Materials, EarlyView.This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen +7 more
wiley +1 more source
Cooperative Game Theory of Hierarchies: One Approach to Solving the Low-Risk Puzzle?
RisksIn this article, we extend the application of cooperative game theory to the so-called low-risk puzzle. Specifically, we apply concepts that consider hierarchies on the assets in the allocation of portfolio risk.
Tobias Hiller
doaj +1 more source
Coherent Diversification Measures in Portfolio Theory: An Axiomatic Foundation
Risks, 2022 We provide an axiomatic foundation for the measurement of correlation diversification in a one-period portfolio model. We propose a set of eight desirable axioms for this class of diversification measures.
Gilles Boevi Koumou, Georges Dionne
doaj +1 more source
Dynamical Optimization Theory of a Diversified Portfolio
, 1998 We propose and study a simple model of dynamical redistribution of capital in a diversified portfolio. We consider a hypothetical situation of a portfolio composed of N uncorrelated stocks.
Cont +7 more
core +1 more source
Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
wiley +1 more source
Portfolio Selection with Housing Market Boom and Bust [PDF]
پژوهشهای اقتصادی, 2011 For the first time, this paper analyzes the portfolio selection theory in the presence of housing market in Iran. One of the important theories about the housing price is household portfolio theory.
Ali Akbar Qolizadeh, Masoud Tahuri Matin
doaj
The theory contribution of case study research designs
Business Research, 2017 The objective of this paper is to highlight similarities and differences across various case study designs and to analyze their respective contributions to theory.
Hans-Gerd Ridder
doaj +1 more source
Stable Diffusion Models Reveal a Persisting Human–AI Gap in Visual Creativity
Advanced Science, EarlyView.This study examines visual creativity in humans and generative AI using the TCIA framework. Human artists outperform AI overall, yet structured human guidance substantially improves AI outputs and evaluations. Findings reveal that alignment with human creativity depends critically on contextual framing, highlighting both the promise and current ...
Silvia Rondini +8 more
wiley +1 more source
Advanced Science, EarlyView.This work provides a practical guide for neuroengineers to design advanced neural interfaces, embracing and tailoring the concept of functional disorder. By bridging 2D and 3D in vitro models, this work highlights how non‐periodic, spatially heterogeneous, multiscale nanotopography can enable more physiologically relevant platforms for studying neural ...
F. Maita +4 more
wiley +1 more source