Results 61 to 70 of about 566,258 (283)

S3RL: Enhancing Spatial Single‐Cell Transcriptomics With Separable Representation Learning

Advanced Science, EarlyView.
Separable Spatial Representation Learning (S3RL) is introduced to enhance the reconstruction of spatial transcriptomic landscapes by disentangling spatial structure and gene expression semantics. By integrating multimodal inputs with graph‐based representation learning and hyperspherical prototype modeling, S3RL enables high‐fidelity spatial domain ...
Laiyi Fu, Penglei Wang, Gaoyuan Xu, Jitao Lu, Qinke Peng, Danyang Wu, Hequan Sun   +6 more
wiley   +1 more source

Multi-Guide Set-Based Particle Swarm Optimization for Multi-Objective Portfolio Optimization

Algorithms, 2023
Portfolio optimization is a multi-objective optimization problem (MOOP) with risk and profit, or some form of the two, as competing objectives. Single-objective portfolio optimization requires a trade-off coefficient to be specified in order to balance ...
Kyle Erwin, Andries Engelbrecht
doaj   +1 more source

Durable Thin‐Film Porous Transport Electrodes for High Current Density PEM Water Electrolysis

Advanced Science, EarlyView.
Water electrolysis using porous transport electrodes with sputter‐deposited, ionomer‐free thin films of rutile IrO2 catalyst suppresses Ir dissolution by >10x over other forms of IrOx. The rutile IrO2 catalyst prepared by this readily scalable electrode synthesis method provides stable cell operation at 3 A cm−2 while using low Ir loading (0.4 mg Ir cm−
James L. Young, Diana E. Beltrán, Sarah J. Blair, Ricardo P. M. Duarte, Makenzie R. Parimuha, Haoran Yu, Lonneke van Eijk, Kimberly S. Reeves, Tomas Grejtak, Jorge Martinez, Bennett A. Chao, Jacob Wrubel, Melissa E. Kreider, Elisa M. Miller, Julia D. Lenef, Karen N. Heinselman, Svitlana Pylypenko, David A. Cullen, Guido Bender   +18 more
wiley   +1 more source

The Markowitz model for portfolio selection

Management Letters/Cuadernos de Gestión, 2002
Since its first appearance, The Markowitz model for portfolio selection has been a basic theoretical reference, opening several new development options.
MARIAN ZUBIA ZUBIAURRE, ALAITZ MENDIZÁBAL ZUBELDIA, LUIS M. MIERA ZABALZA   +2 more
doaj  

Optimizing Omega [PDF]

, 2009
"The original publication is available at www.springerlink.com " Copyright Springer. DOI: 10.1007/s10898-008-9396-5This paper considers the Omega function, proposed by Cascon, Keating & Shadwick as a performance measure for comparing financial assets. We
Bartholomew-Biggs, M., Cross, M., Dewar, M., Kane, S.J.   +3 more
core   +2 more sources

Modification Strategies of Carbon‐Based Electrodes From Structural Regulation to Multifunctional Integration

Advanced Science, EarlyView.
Tracing the evolution from structural regulation to multifunctional integration, this paper systematically analyzes modification strategies for carbon‐based electrodes. It evaluates how element doping, surface functionalization, and composite material design affect the electrode performance, and offers perspectives on future applications and challenges
Yunlei Wang, Shitao Dou, Yifan Wu, Mingguang Wang, Taibin Wu   +4 more
wiley   +1 more source

Investigating the Performance of Active and Passive Individual Investors in Tehran Stock Exchange by Using Portfolio Study and Own Benchmark Abnormal Return Approaches [PDF]

Journal of Asset Management and Financing, 2019
Objective: The purpose of this research is to compare the performance of investors who are actively involved in stock transactions with other investors’.
Naser Jamshidi, mohammad esmaiel fadaie nejad   +1 more
doaj   +1 more source

Higher‐Level Structural Classification of Pseudomonas Cyclic Lipopeptides through Their Bioactive Conformation

Advanced Science, EarlyView.
Solution structures of a series of cyclic lipodepsipeptides from Pseudomonas reveal that these specialized metabolites adopt left‐handed alpha helical conformations of only two types, being either ‘stapled’ or ‘catch‐pole’ helix. The particular modular distribution of the biosynthetic gene clusters is found to determine the extent of their conserved ...
Benjámin Kovács, Durga Prasad, Vic De Roo, Matthias Vanheede, Penthip Muangkaew, Annemieke Madder, Monica Höfte, René De Mot, Niels Geudens, José C. Martins   +9 more
wiley   +1 more source

Environmental, social, and governance (ESG) scores and portfolio performance: evidence from South Africa

Journal of Applied Economics
The study examines the impact of Environmental, Social and Governance (ESG) ratings on portfolio performance. In addition to using the individual ESG components, we also overcome the shortcomings of an alpha-based performance evaluation by applying a ...
Jared A. Short, Godfrey Ndlovu
doaj   +1 more source

Bridging Green Chemistry and Circular Economy: A Pathway to Sustainable Polyester Plastics Through Feedstock, Synthesis, and Waste Upcycling

Advanced Science, EarlyView.
This review summarizes green and low‐carbon strategies throughout the entire life cycle of polyester plastics, including sustainable monomer synthesis, optimization polymerization, efficient recycling, and advanced upcycling technologies. The synergistic implementation of these strategies is expected to significantly promote the development of a ...
Jinzhou Li, Junliang Chen, Yingbing Zhang, Li Wang, Pin Gao, Jianping Yang   +5 more
wiley   +1 more source