Results 41 to 50 of about 499,937 (337)

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

Portfolio optimization for heavy-tailed assets: Extreme Risk Index vs. Markowitz

, 2015
Using daily returns of the S&P 500 stocks from 2001 to 2011, we perform a backtesting study of the portfolio optimization strategy based on the extreme risk index (ERI).
Mainik, Georg, Mitov, Georgi, Rüschendorf, Ludger   +2 more
core   +1 more source

A Robust Statistics Approach to Minimum Variance Portfolio Optimization [PDF]

, 2015
We study the design of portfolios under a minimum risk criterion. The performance of the optimized portfolio relies on the accuracy of the estimated covariance matrix of the portfolio asset returns.
Couillet, Romain, McKay, Matthew R., Yang, Liusha   +2 more
core   +4 more sources

Amido‐Amine Co(II) Precursor‐Based Atomic/Molecular Layer Deposition Processes for Cobalt‐Organic Thin Films and Their Thermal Conversion to CoO Thin Films

Advanced Materials Technologies, EarlyView.
Three new atomic/molecular layer deposition processes are developed for Co‐organic thin films using a promising all‐nitrogen‐coordinated cobalt precursor. The study examines film growth, reaction mechanisms, chemical stability, and decomposition pathways of the resulting films through extensive characterization techniques and DFT calculations ...
Topias Jussila, Jorit Obenlüneschloß, Ji Liu, Olga Partanen, Sami Vasala, Detlef Rogalla, Pieter Glatzel, Michael Nolan, Anjana Devi, Maarit Karppinen   +9 more
wiley   +1 more source

A Heuristic Approach to Forecasting and Selection of a Portfolio with Extra High Dimensions

Mathematics, 2023
The performance of a financial portfolio depends on the output of two tasks: first, a forecasting process, where quantities of interest for the investors, such as the rate of return and risk for each stock, are predicted into the future, and second, an ...
Yujia Hu
doaj   +1 more source

From Brittle to Flexible: Influence of Glucose‐Based Additives on Cellulose Nanocrystal Self‐Assembly in Suspension and Dried Photonic Films

Advanced Optical Materials, EarlyView.
Cellulose nanocrystals (CNCs) self‐assemble in aqueous suspension into chiral nematic liquid crystals, resulting in structurally colored films upon drying. Here, the influence of sugar additives on CNC self‐assembly in suspension and in films are studied.
Buse Tatli, Alexandra R. Rousseau, Wenkui Xing, Matteo Hirsch, Emily D. Cranston, Tiffany Abitbol   +5 more
wiley   +1 more source

Decision-making model of electricity purchasing agent service of power grid enterprises for multi-time-scale market transactions

Zhejiang dianli, 2023
Power grid enterprises need to monitor the purchasing load of the agent and the changes of the market price， and evaluate the risks caused by the multiple uncertainties of the fluctuation of market transaction price， actual load fluctuation and demand ...
WU Huahua, ZHANG Si, GAN Wen, SHEN Chengliang, JIANG Xinyue, LI Yating, YANG Li   +6 more
doaj   +1 more source

Genetically‐Programmed Hypervesiculation of Lactiplantibacillus Plantarum Increases Production of Bacterial Extracellular Vesicles with Therapeutic Efficacy in a Preclinical Inflammatory Bowel Disease Model

Advanced Science, EarlyView.
The development of a novel engineered strain of Lactiplantibacillus plantarum (Lp) is reported that can produce bacterial extracellular vesicles (BEVs) at >60‐fold higher yields than the unmodified parental strain. These Lp BEVs retain therapeutic bioactivity as validated in a mouse model of dextran sodium sulfate‐induced colitis.
Nicholas H Pirolli, Daniel Levy, Alyssa Schledwitz, Natalia Sampaio Moura, Mitali Sarkar, Talia J. Solomon, Emily H. Powsner, Raith Nowak, Zuzanna Mamczarz, Christopher J. Bridgeman, Sulayman Khan, Andrew Hui, Nidhi Anne, Laura Reus, William E. Bentley, Jean‐Pierre Raufman, Steven M. Jay   +16 more
wiley   +1 more source

Fuzzy Portfolio Selection with Sugeno Type Fuzzy Neural Network: Investing in the Mexican Stock Market

Revista Mexicana de Economía y Finanzas Nueva Época REMEF, 2021
The objective of this research is to compare the returns of the portfolios developed by the proposed methodology called Fuzzy Portfolio Selection with Sugeno Type Fuzzy Neural Network against Markowitz’s portfolio theory; to identify the best investment ...
Judith Jazmin Castro Pérez, José Eduardo Medina Reyes   +1 more
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, Kardar, Kesten, Kim, Matteo Marsili, Sergei Maslov, Tu, Yi-Cheng Zhang   +7 more
core   +1 more source