Results 51 to 60 of about 25,476 (184)

Downsystem grain-size trends and mass balance of an ancient wave-influenced sediment routing system: Middle Jurassic Brent Delta, northern North Sea, offshore UK and Norway

open access: yesSedimentologika
We reconstruct spatial variations in grain size in the sediment routing system of the data-rich Middle Jurassic Brent Group of the northern North Sea, using published stratigraphic, thickness, palaeogeographic, provenance and age constraints combined ...
Ikenna C. Okwara   +3 more
doaj   +1 more source

Stabilizing Inference in Dirichlet Regression via Ridge‐Penalized Model

open access: yesStatistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 1, February 2026.
ABSTRACT We propose a penalized Dirichlet regression framework for modeling compositional data, using a softmax link to ensure that the mean vector lies on the simplex and to avoid log‐ratio transformations or zero replacement. The model is formulated in a GLM‐like setting and incorporates an ℓ2$$ {\mathrm{\ell}}_2 $$ (ridge) penalty on the regression ...
Andrea Nigri
wiley   +1 more source

A Two-populations Ising model on diluted Random Graphs

open access: yes, 2010
We consider the Ising model for two interacting groups of spins embedded in an Erd\"{o}s-R\'{e}nyi random graph. The critical properties of the system are investigated by means of extensive Monte Carlo simulations. Our results evidence the existence of a
Agliari E   +14 more
core   +1 more source

Operational Employability Model: A Case Study of Graduate Employability in Croatia

open access: yesBusiness Systems Research
The employability of graduates has become a central topic in higher education policy and research. However, the construct still needs to be clarified.
Tecilazić Ana
doaj   +1 more source

A double-sum Kronecker-type identity

open access: yes, 2016
We prove a double-sum analog of an identity known to Kronecker and then express it in terms of functions studied by Appell and Kronecker's student Lerch, in so doing we show that the double-sum analog is of mixed mock modular form.
Mortenson, Eric T.
core   +1 more source

Underweight Status Amplifies Respiratory Infection Mortality in Diabetes: Findings From a Nationwide Cohort Study

open access: yesJournal of Cachexia, Sarcopenia and Muscle, Volume 17, Issue 2, April 2026.
ABSTRACT Background Diabetes increases susceptibility to infectious respiratory diseases, but the impact of underweight status on mortality from these conditions remains unclear. We evaluated the association between low body mass index (BMI) and respiratory infection‐related mortality in a large nationwide cohort of individuals with diabetes.
Hun Jee Choe   +7 more
wiley   +1 more source

Crossing conditions in coupled cluster theory [PDF]

open access: yes, 2017
We derive the crossing conditions at conical intersections between electronic states in coupled cluster theory, and show that if the coupled cluster Jacobian matrix is nondefective, two (three) independent conditions are correctly placed on the nuclear ...
Kjønstad, Eirik F.   +3 more
core   +2 more sources

Antenatal Corticosteroid Administration and Childhood Respiratory Morbidity: A Regression Discontinuity Study

open access: yesBJOG: An International Journal of Obstetrics &Gynaecology, Volume 133, Issue 2, Page 263-271, January 2026.
ABSTRACT Objective To determine if routine administration of antenatal corticosteroids affects the risk of infant lower respiratory tract infection and/or childhood asthma. Design Linked population‐based cohort analysed using a regression discontinuity design, which better controls for confounding than standard observational studies.
Jennifer A. Hutcheon   +8 more
wiley   +1 more source

Tackling financialization amidst rising labor cost in China

open access: yesBorsa Istanbul Review
Suppressing corporate financialization exacerbated by rising labor costs is an important micro-level issue for revitalizing the manufacturing industry.
Zhuo-Ya Du, Qian Wang
doaj   +1 more source

Stability and Stochastic Dynamics of an Extended SUC Epidemic Model With Delays via NSFD Scheme: Implications for Public Health Planning

open access: yesComplexity, Volume 2026, Issue 1, 2026.
As of April 11, 2025, the World Health Organization (WHO) reports that Pakistan has recorded 1,581,936 confirmed COVID‐19 cases, with 30,664 deaths and 1,538,689 recoveries. Motivated by this context, we develop an extended Susceptible–Uninfected–Carrier (SUC) epidemic model incorporating both time delays and stochastic effects to capture more ...
Wafa F. Alfwzan   +6 more
wiley   +1 more source

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