Results 81 to 90 of about 24,910 (238)

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

Complexity, 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, Sana Iqbal, Naveed Shahid, Nauman Ahmed, Ali Raza, Emad Fadhal, Lingzhong Guo   +6 more
wiley   +1 more source

Urban-rural equalization of basic public services, fertility behavior and growth

International Review of Economics & Finance
The equalization of basic public services is a central reform priority in China. This study develops a three-period overlapping generations (OLG) model with heterogeneous agents to examine how urban-rural equalization in pension subsidies and public ...
Ning Zhang, Yue Ding
doaj   +1 more source

Age at First RSV Hospitalisation and the Risk of Subsequent Bacterial Pneumonia

Acta Paediatrica, EarlyView.
Samuel Videholm, Karin Strandell, Maria Björmsjö, Andreas Tornevi, Sven Arne Silfverdal   +4 more
wiley   +1 more source

“Awakening consciousness”: Safe Care Linkage Theory From a Mixed Perspective—A Constructivist Grounded Theory Study

Journal of Nursing Management, Volume 2026, Issue 1, 2026.
Aim To explore how healthcare professionals, older adults, and caregivers across different contexts conceptualize and implement safe care and develop a substantive theory that reflects their perspectives. Background Geriatric care is delivered in a model of ongoing change, with healthcare professionals, older adults, and caregivers highlighting its ...
Lupei Yan, Xiaorong Wu, Yunman Huang, Li Liu, Fang Wang, Xiuying Hu, Paolo C. Colet   +6 more
wiley   +1 more source

Superintegrability on Three-Dimensional Riemannian and Relativistic Spaces of Constant Curvature

, 2005
A family of classical superintegrable Hamiltonians, depending on an arbitrary radial function, which are defined on the 3D spherical, Euclidean and hyperbolic spaces as well as on the (2+1)D anti-de Sitter, Minkowskian and de Sitter spacetimes is ...
Ballesteros, Angel, Herranz, Francisco J.   +1 more
core   +3 more sources

Effects of disruptive peers in endogenous social networks

Quantitative Economics, Volume 17, Issue 1, Page 92-134, January 2026.
This study uses sociometric data to show that social connections in the classroom shape the diffusion of the negative externalities on cognitive achievement generated by abused and neglected peers. We find the strongest negative effects for students who are socially closest to the abused and neglected peer. The fade‐out rate of the negative externality
Torsten Santavirta, Miguel Sarzosa
wiley   +1 more source

Orbital order, anisotropic spin couplings, and the spin-wave spectrum of the ferromagnetic Mott insulator YTiO3

, 2005
Using a point-charge calculation of the electrostatic crystal field, we determine the non-degenerate orbital ground state of the ferromagnetic Mott insulator YTiO3, which is found to agree perfectly with experiment.
Akimitsu, Altshuler, Arima, Bocquet, Cwik, Ewald, Garret, Hahn, Harrison, Haverkort, Itoh, Kaplan, Keimer, Komarek, Meijer, Mochizuki, Mochizuki, Mochizuki, Mochizuki, Okatov, Rückamp, Saitoh, Schmitz, Schmitz, Shekhtman, Slater, Solovyev, Takahashi, Ulrich, Ulrich, Watson, Yildirim   +31 more
core   +1 more source

Skill formation and the trouble with child noncognitive skill measures

Quantitative Economics, Volume 17, Issue 1, Page 135-172, January 2026.
This paper develops a framework to address issues of contamination in parent‐reported measures of child noncognitive skills. We estimate a dynamic model in which child and parental skills evolve jointly and leverage information provided by teachers and interviewers to deal with contamination of parent‐reported measures.
Emilia Del Bono, Josh Kinsler, Ronni Pavan   +2 more
wiley   +1 more source

A gyermekvállalás árnyékára és a teljes termékenységi ráta Magyarországon?

Competitio, 2017
Magyarországon a teljes termékenységi ráta a rendszerváltás óta meredeken csökken. Az arányszám ráadásul az 1980-as évek második fele óta messze elmarad a reprodukciós szinttől, a népességszám 1980 óta fogy. Releváns tehát a kérdés, hogy milyen tényezők
Szabolcs Pásztor
doaj   +1 more source

Control Node Placement and Structural Controllability of Water Quality Dynamics in Drinking Networks

Water Resources Research, Volume 61, Issue 12, December 2025.
Abstract Chlorine, the most widely used disinfectant, needs to be adequately distributed in water distribution networks (WDNs) to maintain consistent residual levels and ensure safe water. This is performed through control node injections at the treatment plant and via booster stations distributed across the WDNs.
Salma M. Elsherif, Ahmad F. Taha
wiley   +1 more source