Results 61 to 70 of about 18,829 (175)

Hybrid Reaction–Diffusion Epidemic Models: Dynamics and Emergence of Oscillations

Mathematical Methods in the Applied Sciences, Volume 49, Issue 5, Page 4074-4095, 30 March 2026.
ABSTRACT In this paper, we construct a hybrid epidemic mathematical model based on a reaction–diffusion system of the SIR (susceptible‐infected‐recovered) type. This model integrates the impact of random factors on the transmission rate of infectious diseases, represented by a probabilistic process acting at discrete time steps.
Asmae Tajani, Cristiana J. Silva, Guillaume Cantin   +2 more
wiley   +1 more source

On the Optimality of State-Dependent Base-Stock Policies for an Inventory System with PH-Type Disruptions

Logistics
Background: The management of inventory under realistic supply chain disruptions, which are often non-exponential, challenges classical control theory.
Davide Castellano
doaj   +1 more source

Adiabatic reduction of a model of stochastic gene expression with jump Markov process

, 2013
This paper considers adiabatic reduction in a model of stochastic gene expression with bursting transcription considered as a jump Markov process. In this model, the process of gene expression with auto-regulation is described by fast/slow dynamics.
Lei, Jinzhi, Mackey, Michael C., Yvinec, Romain, Zhuge, Changjing   +3 more
core   +3 more sources

Optimal dividends for a NatCat insurer in the presence of a climate tipping point

Canadian Journal of Statistics, Volume 54, Issue 1, March 2026.
Abstract We study optimal dividend strategies for an insurance company facing natural catastrophe claims, anticipating the arrival of a climate tipping point after which the claim intensity and/or the claim size distribution of the underlying risks deteriorates irreversibly.
Hansjörg Albrecher, Pablo Azcue, Nora Muler   +2 more
wiley   +1 more source

Predictive maintenance for the heated hold-up tank

, 2013
We present a numerical method to compute an optimal maintenance date for the test case of the heated hold-up tank. The system consists of a tank containing a fluid whose level is controlled by three components: two inlet pumps and one outlet valve.
Aldemir, Aven, Benoîte de Saporta, Cojazzi, Davis, de Saporta, de Saporta, Devooght, Dutuit, Grall, Gugerli, Huilong Zhang, Li, Marseguerra, Marseguerra, Marseguerra, Pagès, Pagès, Pagès, Schoenig, Siu, van Noortwijk, Zhang   +22 more
core   +3 more sources

Structural Health Monitoring of a Unidirectional Isolation Bridge: Bidirectional Seismic Behavior, Stochastic Model Updating, and Prediction

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 3, Page 759-780, March 2026.
ABSTRACT Accurate mechanical characterization of civil engineering structures after construction remains challenging due to the unique complexities of each structure, including geometric configurations, imperfect design modeling assumptions, soil conditions, and pervasive uncertainties in actual operational environments. Leveraging actual measurements,
Xinhao He, Shigeki Unjoh, Takuya Makino, Chiaki Nagao, Akira Shibasaki, Tadayuki Noro, Shinsuke Yamazaki, Hiroshi Ogami   +7 more
wiley   +1 more source

Stochastic modeling of a gene regulatory network driving B cell development in germinal centers.

PLoS ONE
Germinal centers (GCs) are the key histological structures of the adaptive immune system, responsible for the development and selection of B cells producing high-affinity antibodies against antigens.
Alexey Koshkin, Ulysse Herbach, María Rodríguez Martínez, Olivier Gandrillon, Fabien Crauste   +4 more
doaj   +1 more source

Delay-Optimal Buffer-Aware Probabilistic Scheduling with Adaptive Transmission

, 2015
Cross-layer scheduling is a promising way to improve Quality of Service (QoS) given a power constraint. In this paper, we investigate the system with random data arrival and adaptive transmission.
Chen, Wei, Chen, Xiang
core   +1 more source

Optimal Refund Mechanism With Consumer Learning

The RAND Journal of Economics, Volume 57, Issue 1, Page 205-224, Spring 2026.
ABSTRACT This article studies the optimal refund mechanism when an uninformed buyer learns about their valuation over time. We consider various refund mechanisms including simple return policies (no returns or free returns), and stochastic return policies, which allow the buyer to keep the product with some probability upon receiving a refund.
Qianjun Lyu
wiley   +1 more source

Different Approaches on Stochastic Reachability as an Optimal Stopping Problem [PDF]

, 2008
Reachability analysis is the core of model checking of time systems. For stochastic hybrid systems, this safety verification method is very little supported mainly because of complexity and difficulty of the associated mathematical problems.
Bujorianu, L.M.
core   +2 more sources