Results 71 to 80 of about 33,619 (222)

Exploring Asymmetric GARCH Models for Predicting Indian Base Metal Price Volatility

open access: yesFolia Oeconomica Stetinensia
Many studies have been done in the field of predicting the Volatility of Commodities; however, very little or no analysis has been conducted on any sector, industry, or indices to identify which model is best to understand the asset’s characteristics, as
Kumar Arya   +4 more
doaj   +1 more source

$gl(2|2)$ Current Superalgebra and Non-unitary Conformal Field Theory

open access: yes, 2002
Motivated by application of current superalgebras in the study of disordered systems such as the random XY and Dirac models, we investigate $gl(2|2)$ current superalgebra at general level $k$.
Belavin   +29 more
core   +3 more sources

Perceptual discrimination of complex objects: Apolipoprotein E e4 gene‐dose effects in mid‐life

open access: yesAlzheimer's &Dementia, Volume 21, Issue 6, June 2025.
Abstract INTRODUCTION Complex perceptual discrimination is supported by tau‐vulnerable regions of the medial temporal lobe (MTL); notably the perirhinal cortex. This research tests whether there is a gene‐dose effect of apolipoprotein E (APOE) e4 on perceptual discrimination in mid‐life.
Claire Lancaster   +4 more
wiley   +1 more source

Fine group gradings of the real forms of $sl(4,\C)$, $sp(4,\C)$, and $o(4,\C)$

open access: yes, 2007
We present an explicit description of the 'fine group gradings' (i.e. group gradings which cannot be further refined) of the real forms of the semisimple Lie algebras $sl(4,\C)$, $sp(4,\C)$, and $o(4,\C)$. All together 12 real Lie algebras are considered,
Patera, Jiří   +2 more
core   +2 more sources

Infinite Families of Gauge-Equivalent $R$-Matrices and Gradations of Quantized Affine Algebras

open access: yes, 1994
Associated with the fundamental representation of a quantum algebra such as $U_q(A_1)$ or $U_q(A_2)$, there exist infinitely many gauge-equivalent $R$-matrices with different spectral-parameter dependences.
Bracken, Anthony J.   +3 more
core   +1 more source

The Role of Lithium Ions on the Solubility of K4E4 in Ethylenediamine and the Oxidation of the Zintl Anions [E4]4− (E = Ge, Sn, Pb) as well as [Ge9]4−

open access: yesChemistry – A European Journal, Volume 31, Issue 26, May 8, 2025.
The solubility of K4Ge4, K4Sn4, and K4Pb4 phases and oxidation of comprised four‐atom clusters in ethylenediamine (en) is induced by the addition of LiCl. The 119Sn NMR spectra of [Sn9]4− with Li+ and K+ counterions indicate a cation‐dependent change in both the chemical shift and coupling constant, strongly suggesting K+/[Sn9]4− ion pairing, which is ...
Christian E. Fajman   +3 more
wiley   +1 more source

Radioactive nuclei from cosmochronology to habitability [PDF]

open access: yes, 2018
In addition to long-lived radioactive nuclei like U and Th isotopes, which have been used to measure the age of the Galaxy, also radioactive nuclei with half-lives between 0.1 and 100 million years (short-lived radionuclides, SLRs) were present in the ...
Kereszturi, Á., Lugaro, M., Ott, U.
core   +2 more sources

Joint Wire Cutting with Non‐Maximally Entangled States

open access: yesAdvanced Quantum Technologies, Volume 8, Issue 5, May 2025.
Wire cutting decomposes large quantum circuits into smaller subcircuits by severing connecting wires, enabling execution on multiple distributed devices. This study employs non‐maximally entangled (NME) states in joint wire cuts to reduce their overhead.
Marvin Bechtold   +4 more
wiley   +1 more source

Relationship of banking industry financial performance in ASEAN-6 countries: A panel data evidence

open access: yesJournal of Economics and Management
Aim/purpose – This study examines the effects of non-performing loans (NPL), net interest margin (NIM), and capital adequacy ratio (CAR) on the return on equity (ROE) of banks in selected ASEAN countries, namely Indonesia, Malaysia, Thailand, Singapore ...
Aris Muhammad   +3 more
doaj   +1 more source

Sex Differences in Cortical Thickness and Neuropsychiatric Symptom Burden Based on APOE4 Homozygosity in Alzheimer's Disease

open access: yesAmerican Journal of Medical Genetics Part B: Neuropsychiatric Genetics, Volume 198, Issue 2, March 2025.
ABSTRACT Sex differences in patterns of cortical thickness and neuropsychiatric symptom (NPS) burden were examined among individuals with Alzheimer's disease (AD) and two copies (homozygote carriers) of the e4 allele of the apolipoprotein gene (APOE). A total of 752 participants with a clinical etiologic diagnosis of AD were selected from the National ...
Marc A. Khoury   +8 more
wiley   +1 more source

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