Results 71 to 80 of about 343,410 (309)
A General Framework for Portfolio Theory. Part III: Multi-Period Markets and Modular Approach
Risks, 2019 This is Part III of a series of papers which focus on a general framework for portfolio theory. Here, we extend a general framework for portfolio theory in a one-period financial market as introduced in Part I [Maier-Paape and Zhu, Risks 2018, 6(2), 53 ...
Stanislaus Maier-Paape +2 more
doaj +1 more source
Classification of the frontier in the three-country, three-good Ricardian model [PDF]
The production assignment problem assumes a central role in the multi-country, multi-good Ricardian trade model. However, resolution of the problem is not sufficient to illustrate the shape of the world production frontier, even if the examination is ...
Takeshi Ogawa
core
Backbone Heterojunction Photocatalysts for Efficient Sacrificial Hydrogen Production
Advanced Functional Materials, EarlyView.Herein, a ‘single‐component’ organic semiconductor photocatalyst is presented in which a molecular donor is bonded to a polymer acceptor. The resultant material demonstrates exceptional photocatalytic activity for hydrogen evolution in aqueous triethylamine with an outstanding external quantum efficiency of 38% at 420 nm.
Richard J. Lyons +11 more
wiley +1 more source
The Recursive Thick Frontier Approach to Estimating Efficiency [PDF]
The traditional econometric techniques for frontier models, namely the Stochastic Frontier Approach (SFA), the Thick Frontier Approach (TFA) and the Distribution Free Approach (DFA) have in common that they depend on a priori assumptions that are ...
Schure, Paul, Wagenvoort, Rien
core
MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance
Advanced Functional Materials, EarlyView.Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley +1 more source
A mean-variance frontier in discrete and continuous time [PDF]
The paper presents a mean-variance frontier based on dynamic frictionless investment strategies in continuous time. The result applies to a finite number of risky assets whose price process is given by multivariate geometric Brownian motion with ...
Bekker, Paul A.
core +1 more source
Advanced Functional Materials, EarlyView.We introduce a nucleic acid nanoparticle (NANP) platform designed to be rrecognized by the human innate immune system in a regulated manner. By changing chemical composition while maintaining constant architectural parameters, we identify key determinants of immunorecognition enabling the rational design of NANPs with tunable immune activation profiles
Martin Panigaj +21 more
wiley +1 more source
Geometric Representation of the Mean-Variance-Skewness Portfolio Frontier Based upon the Shortage Function [PDF]
The literature suggests that investors prefer portfolios based on mean, variance and skewness rather than portfolios based on mean-variance (MV) criteria solely.
Amine Mounir +3 more
core
Advanced Functional Materials, EarlyView.Molecular engineering of a nonconjugated radical polymer enables a significant enhancement of the glass transition temperature. The amorphous nature and tunability of the polymer, arising from its nonconjugated backbone, facilitates the fabrication of organic memristive devices with an exceptionally high yield (>95%), as well as substantial ...
Daeun Kim +14 more
wiley +1 more source
Decomposing stochastic frontier efficiency into secular and organisational efficiencY
Journal of Computational and Applied Mathematics, 1991 AbstractIn this article we propose to decompose the frontier efficiency into two distinct parts, namely a secular part (long-term) and an organisational part (short-term). A product life-cycle model for twelve industries of the Belgian manufacturing sector has been tested for the period 1979–1983 by using cluster analysis.
Van Den Broeck, Julien +2 more
openaire +2 more sources