Results 81 to 90 of about 813,474 (259)

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

Specification Testing for Multivariate Time Series Volatility Models [PDF]

Volatility models have been playing an important role in economics and finance. Using a multivariate generalized spectral approach, we propose a new class of generally applicable omnibus tests for univariate and multivariate volatility models. Both GARCH
Yongmiao Hong, Yoon-Jin Lee
core  

Conditional Transformation Models

, 2012
The ultimate goal of regression analysis is to obtain information about the conditional distribution of a response given a set of explanatory variables.
Bühlmann, Bühlmann, Bühlmann, Bühlmann, Chen, Chen, Cheng, Cheng, Currie, Dette, Doksum, Eilers, Fenske, Friedman, Gilchrist, Gneiting, Gneiting, Gneiting, Hall, Hall, Hayfield, He, Hofner, Hothorn, Koenker, Koenker, Koenker, Kriegler, Li, Lu, Lu, Mayr, Ridgeway, Rigby, Schemper, Schild, Schmid, Schnabel, Sexton, Shen, Tutz, Tutz, van de Geer, Wu, Zeng, Zheng   +45 more
core   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

The Transmuted Geometric-Weibull Distribution: Properties, Characterizations And Regression Models

, 2017
We propose a new lifetime model called the transmuted geometric-Weibull distribution. Some of its structural properties including ordinary and incomplete moments, quantile and generating functions, probability weighted moments, Renyi and q-entropies and ...
Z. Nofal, Y. M. E. Gebaly, E. Altun, M. Alizadeh, Nadeem Shafique Butt   +4 more
semanticscholar   +1 more source

Rates of convergence for empirical spectral measures: a soft approach

, 2016
Understanding the limiting behavior of eigenvalues of random matrices is the central problem of random matrix theory. Classical limit results are known for many models, and there has been significant recent progress in obtaining more quantitative, non ...
D. Voiculescu, E. M. Rains, E. Meckes, E. S. Meckes, E. S. Meckes, E. S. Meckes, E. Wigner, E. Wigner, F. J. Dyson, J. B. Hough, J. Gustavsson, J. P. Keating, L. C. Evans, L. Erdős, L. Erdős, L. Erdős, M. Gromov, N. Gozlan, N. Gozlan, R. Speicher, S. Chatterjee, S. Chatterjee, S. Dallaporta, S. O’Rourke, T. Tao, T. Tao, V. A. Marčenko, V. Kargin   +27 more
core   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Scaling-up Empirical Risk Minimization: Optimization of Incomplete U-statistics [PDF]

, 2016
In a wide range of statistical learning problems such as ranking, clustering or metric learning among others, the risk is accurately estimated by $U$-statistics of degree $d\geq 1$, i.e.
Bellet, Aurélien, Clémençon, Stéphan, Colin, Igor   +2 more
core   +2 more sources

Levy-stable distributions revisited: tail index > 2 does not exclude the Levy-stable regime

, 2001
Power-law tail behavior and the summation scheme of Levy-stable distributions is the basis for their frequent use as models when fat tails above a Gaussian distribution are observed.
DuMouchel W. H., Koutrouvelis I. A., McCulloch J. H., RAFAŁ WERON   +3 more
core   +1 more source

Dual‐Ligand Metal‐Organic Frameworks via In Situ Amidoxime Engineering for Selective Ion Separation

Advanced Functional Materials, EarlyView.
Inspired by microbial ion‐trapping mechanisms, a mild and universal strategy is developed to construct highly porous amidoxime‐functionalized MOFs. DFT calculations and molecular force measurements reveal that the dual‐ligand amidoxime configuration significantly strengthens Ga(III) affinity.
Zhifang Lv, Guixia Fan, Yun Bai, Guosheng Li, Peng Li, Wenjihao Hu, Yijun Cao, Wenshuai Yang, Daoguang Teng, Hongbo Zeng   +9 more
wiley   +1 more source