Results 61 to 70 of about 1,191 (137)

Triggered Dissolution of Electrostatically Crosslinked Hydrogels from Star‐Shaped Polyampholytic Block Copolymers

open access: yesMacromolecular Chemistry and Physics, Volume 227, Issue 4, 26 February 2026.
We investigate pH or salt‐induced hydrogel formation and dissolution for oppositely charged star‐shaped block copolymers. The experiments are supported by coarse grained simulations which explain hydrogel formation over a broad pH range. ABSTRACT We explore the possible reversible formation of hydrogels through electrostatic interactions between four ...
Jonas Julius Grün   +12 more
wiley   +1 more source

Bounds for the Combinations of Neuman-Sándor, Arithmetic, and Second Seiffert Means in terms of Contraharmonic Mean

open access: yesAbstract and Applied Analysis, 2013
We give the greatest values r1, r2 and the least values s1, s2 in (1/2, 1) such that the double inequalities C(r1a+(1-r1)b,r1b+(1-r1)a)
Zai-Yin He   +4 more
doaj   +1 more source

Are i‐Motif Structures in DNA Compatible with Cytosine–Ag(I)–Cytosine Base Pairs?

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 2, 9 January 2026.
An i‐motif/duplex junction was evaluated with respect to its ability to replace the protons from the hemi‐protonated C:CH+ pairs by AgI ions to form C–AgI–C base pairs. Interestingly, only one such metal‐mediated base pair can be formed before the oligonucleotide rearranges into a duplex structure.
Victoria Seiffert   +8 more
wiley   +1 more source

Pricing and Hedging of SOFR Derivatives

open access: yesMathematical Finance, Volume 36, Issue 1, Page 180-202, January 2026.
ABSTRACT The London Interbank Offered Rate (LIBOR) has served since the 1970s as a fundamental measure for floating term rates across multiple currencies and maturities. However, in 2017, the Financial Conduct Authority announced the discontinuation of LIBOR from the end of 2021, and the New York Fed declared the Treasury repo financing rate, called ...
Matthew Bickersteth   +2 more
wiley   +1 more source

Balanced Underbagged Ensemble Approach for Classifying Highly Imbalanced Datasets in the Insurance and Financial Sectors

open access: yesIntelligent Systems in Accounting, Finance and Management, Volume 32, Issue 4, December 2025.
ABSTRACT Data bias is a critical challenge in machine learning applications within the financial and insurance sectors, as it can lead to misleading risk assessments and inaccurate predictive models. A prevalent source of bias in real‐world datasets is the imbalanced distribution of classes, which is particularly problematic in fraud detection, credit ...
Alberto Gutierrez‐Gallego   +4 more
wiley   +1 more source

Environmental evolution of cover deposits on chemically distinctive bare ground, New Zealand: review and temporal contexts

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 68, Issue 5, Page 1120-1152, December 2025.
ABSTRACT Chemically distinctive features such as high salinity, low nutrient contents, and extremes of pH can limit the development of a vegetation cover on soil‐free bare ground. This study synthesises our previous work on the geoecology of numerous chemically distinctive bare sites in the South Island and adds a temporal component within the last ...
Dave Craw, Cathy Rufaut
wiley   +1 more source

Seiffert Means in a Triangle

open access: yes, 2004
Simple geometric proofs of some old and new inequalities between the Seiffert mean and classical ...
Witkowski, Alfred
core  

Optimal Bounds for Seiffert Mean in terms of One-Parameter Means

open access: yes, 2020
The authors present the greatest value r 1 and the least value r 2 such that the double ...
Yu-Ming Chu, Hua-Nan Hu, Guo-Yan Tu
core  

Optimal two parameter bounds for the Seiffert mean

open access: yes, 2012
In this note we obtain sharp bounds for the Seiffert mean in terms of a two parameter family of means. Our results generalize and extend the recent bounds presented in the Journal of Inequalities and Applications (2012) and Abstract and Applied Analysis (2012).
Chu, Yu-Ming   +2 more
openaire   +2 more sources

On a Paper of Mihaly Bencze on the Seiffert Mean

open access: yes, 2002
In this short note, the author shows that among the 65 inequalities presented in [1], some are trivial or known, or follow from each other.
Sándor, József
core  

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