Results 151 to 160 of about 1,974,901 (308)

AlphaAgent: LLM-Driven Alpha Mining with Regularized Exploration to Counteract Alpha Decay [PDF]

arXiv
Alpha mining, a critical component in quantitative investment, focuses on discovering predictive signals for future asset returns in increasingly complex financial markets. However, the pervasive issue of alpha decay, where factors lose their predictive power over time, poses a significant challenge for alpha mining.
arxiv  

Enhanced Terahertz Spectroscopy of a Monolayer Transition Metal Dichalcogenide

Advanced Functional Materials, EarlyView.
An ad‐hoc engineered metallic surface is employed to perform enhanced terahertz spectroscopy of a monolayer transition metal dichalcogenide (TMD). Thanks to a local absorption boost of 104, this technique allows for the extraction of the phonon resonance features and effective permittivity of the 2D material, paving the way for the rational design of ...
Xin Jin, Vincenzo Aglieri, Young‐Gyun Jeong, Atiye Pezeshki, Lilian Skokan, Mostafa Shagar, Yuechen Jia, Pablo Bianucci, Andreas Ruediger, Emanuele Orgiu, Andrea Toma, Luca Razzari   +11 more
wiley   +1 more source

Members of Damshahre Sepidkooh Producers’ Cooperative in Khorram Abad and their Problems: An Attitudinal Survey [PDF]

تعاون و کشاورزی, 2012
The current research aims at surveying the attitudes of the members of Damshahre Sepidkooh Producers' Cooperative in Khorram Abad- Lorestan Province to learn about their problems and difficulties.
S Gholamrezai, M Bahadori, S.M Musavi
doaj  

Butterfly‐Inspired Hierarchical Hybrid Composites for Lightweight Structural Thermal Management Applications

Advanced Functional Materials, EarlyView.
Emulating nature's unparalleled engineering, this work introduces butterfly‐inspired hybrid composites for high‐performance transportation and defense sectors. Leveraging biomimicry, these lightweight composites feature butterfly leg‐inspired hierarchical fibrous assemblies and butterfly wing‐inspired sandwich‐structured architecture, to achieve ...
Nello D. Sansone, Rafaela Aguiar, Mahmoud Embabi, Nichole Cheung, Anthony V. Tuccitto, Nathan R. S. Chang, Matthew Leroux, Patrick C. Lee   +7 more
wiley   +1 more source

On non-uniqueness in the option valuation problem [PDF]

arXiv
It is known that the value of a call option in the case of constant elasticity processes (CEV) with the indicator $\alpha$ exceeding the critical $\alpha=1$ is determined in a non-unique way. We show how, based on an already existing mathematical theory concerning the correctness of boundary conditions for degenerate parabolic equations on the semi ...
arxiv  

Ultra‐Effective Light‐Activated Antibacterial Activity via Carboxyl Functionalized Graphene Quantum Dots and Films

Advanced Functional Materials, EarlyView.
Carboxyl‐functionalized graphene quantum dots (cGQDs) exhibit high singlet oxygen quantum yield due to strong spin–orbit coupling. cGQDs achieve minimum bactericidal concentration of only 0.4 µg mL−1 against S. aureus under low‐intensity illumination.
Muhammad Hassnain, Laure S. van Hofwegen, Humeyra Nur Kaleli, Temirlan Kubanaliev, Zafer Eroglu, Asim Onal, Payal P. S. Balraadjsing, Onder Metin, Fahri Alkan, Sebastian A. J. Zaat, Sedat Nizamoglu   +10 more
wiley   +1 more source

Asymptotic Error Distribution of the Euler Scheme for Fractional Stochastic Delay Differential Equations with Additive Noise [PDF]

arXiv
In this paper we consider the Euler scheme for a class of stochastic delay differential equations driven by a linear fractional $\alpha$-stable L\'evy motion with index $H\in(0,1)$. We establish the consistency of the scheme and study the limit distribution of the normalized error process. We show that in the rough case, i.e.
arxiv  

Assessment of effects in advances of accounting technologies on quality financial reports in Jordanian public sector

Uncertain Supply Chain Management
The study aimed to examine the effects of accounting technology improvements on the generation of accurate and reliable financial reports in the public sector of Jordan.
Ahmad Y. A. Bani Ahmad, H. Abusaimeh, Abedalqader Rababah, Mohammad Alqsass, Nofan Hamed Al-Olima, Mohammad Naser Hamdan   +5 more
semanticscholar   +1 more source

A Close Look at the Local Structure of Functional Polymers: The Example of Poly(Vinylidene Fluoride)

Advanced Functional Materials, EarlyView.
To accurately develop structure‐property relationships in functional macromolecules, it is increasingly important to consider the local chain arrangement in addition to long‐range order. It is demonstrated in the case of poly(vinylidene fluoride) that solid‐state nuclear magnetic resonance (NMR) spectroscopy can provide detailed insights into the local
Henry J. Kantrow, Claire Welton, Neethu Thomas, Vincent Sarou‐Kanian, Tomasz Pawlak, Natalie Stingelin, G. N. Manjunatha Reddy   +6 more
wiley   +1 more source

RiskMiner: Discovering Formulaic Alphas via Risk Seeking Monte Carlo Tree Search [PDF]

arXiv
The formulaic alphas are mathematical formulas that transform raw stock data into indicated signals. In the industry, a collection of formulaic alphas is combined to enhance modeling accuracy. Existing alpha mining only employs the neural network agent, unable to utilize the structural information of the solution space.
arxiv