Results 161 to 170 of about 1,408,918 (247)
Donor‐acceptor fractal synergy: Decoding self‐similarity for stable organic photovoltaics
FlexMat, EarlyView.Morphological congruence between donor and acceptor refines the fractal structure of bulk heterojunction films and enhances their self‐similarity. This optimized multiscale morphology preserves charge‐transport pathways against external disturbances, suppresses structural degradation, and improves the operational stability of organic solar cells while ...
Runzheng Gu +13 more
wiley +1 more source
A New Implementation of Network GARCH Model for Stock Volatility and Co‐Volatility Forecasting
Journal of Forecasting, EarlyView.ABSTRACT Volatility clustering and spillovers are key features of financial time series with many cross‐sectional assets. While network analysis links similar or correlated stocks and helps trace volatility spillovers, contemporary multivariate ARCH‐GARCH formulations struggle to represent structured network dependence and remain parsimonious.
Peiyi Zhou
wiley +1 more source
SRAM based Gaussian noise generation for post quantum cryptography. [PDF]
Sci RepKim MS, Jeon SB, Kim S.
europepmc +1 more source
A Multi‐Objective Periodic Vehicle Routing Model for Sustainable Healthcare Waste Collection
The International Journal of Health Planning and Management, EarlyView.ABSTRACT The collection of infectious waste from healthcare facilities (HCF) constitutes a recurring operational challenge. Indeed, despite the inherent health risks posed by the storage and the transportation of infectious materials, most of the existing waste collection systems tends to prioritise cost optimization and to underaddress the safety ...
Hajer Ben‐Romdhane
wiley +1 more source
A new family of <i>q</i>-hypergeometric congruences from Andrews' multi-series transformation. [PDF]
Rev R Acad Cienc Exactas Fis Nat A MatGuo VJW, Schlosser MJ.
europepmc +1 more source
Journal of Applied Econometrics, EarlyView.ABSTRACT We estimate the causal effects of the introduction of the minimum wage in Germany on the distributions of hourly wages, monthly earnings, and hours worked, combining rich large‐scale data sources. We compare linear and non‐linear versions of distribution regression difference‐in‐differences (DR‐DiD) and also estimate bivariate DR‐DiD.
Martin Biewen +2 more
wiley +1 more source
Topological Complexity of the Length-Constrained Systems of Finite Symbols. [PDF]
Entropy (Basel)Wang Q, Yao C, He J, Hou B.
europepmc +1 more source
Mixed Steiner Triple Systems With Shortest Length
Journal of Combinatorial Designs, EarlyView.ABSTRACT A mixed Steiner triple system is a 3‐GDD which is viewed as a code with minimum Hamming distance 3. These codes are the minimum weight codewords of a 1‐perfect code over a mixed alphabet, when the related codes exist, and provide the connection between 3‐GDDs and coding theory.
Tuvi Etzion
wiley +1 more source
Most totally real fields do not have universal forms or the Northcott property. [PDF]
Proc Natl Acad Sci U S ADaans N +4 more
europepmc +1 more source
Exact Values and Bounds on Covering Schemes of Strength Two
Journal of Combinatorial Designs, EarlyView.ABSTRACT In this work, we investigate covering schemes of strength 2 over finite abelian groups, establishing new lower and upper bounds and evaluating new exact values. A main result is a new general lower bound that improves the trivial one and achieves optimality for the binary case. We also develop a recursive relation based on subsets of the group
André G. Castoldi +4 more
wiley +1 more source