Results 101 to 110 of about 18,593,943 (305)

Strategic Asset Allocation in a Continuous-Time VAR Model [PDF]

open access: yes
This note derives an approximate solution to a continuous-time intertemporal portfolio and consumption choice problem. The problem is the continuous-time equivalent of the discrete-time problem studied by Campbell and Viceira (1999), in which the ...
George Chacko   +3 more
core  

Event-triggered control for discrete-time systems

open access: yes, 2010
— In this paper, event-triggered strategies for control of discrete-time systems are proposed and analyzed. Similarly to the continuous-time case, the plant is assumed input-to-state stable with respect to measurement errors and the control law is ...
Kyriakopoulos, KJ   +7 more
core   +1 more source

Generalized continuous-time random walks, subordination by hitting times, and fractional dynamics [PDF]

open access: yes, 2009
Functional limit theorems for continuous-time random walks (CTRW) are found in the general case of dependent waiting times and jump sizes that are also position dependent.
Kolokoltsov, V. N. (Vasiliĭ Nikitich)
core   +1 more source

Stability of Continuous Time Difference Systems

open access: yesAbstract and Applied Analysis
We propose new sufficient conditions for the exponential stability of a class of nonlinear delay difference equations with continuous time (DECT). The above conditions provide a direct estimation of the exponential decay rate of the system.
Rigoberto Medina
doaj   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

open access: yesFEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Integral-Value Models for Outcomes over Continuous Time [PDF]

open access: yes
Models of preferences between outcomes over continuous time are important for individual, corporate, and social decision making, e.g., medical treatment, infrastructure development, and environmental regulation.
Charles M. Harvey, Lars Peter Østerdal
core  

Rex Bergstrom's contributions to continuous time macroeconometric modelling

open access: yes, 2009
This paper reviews the contributions of Rex Bergstrom to the development of continuous time dynamic disequilibrium macroeconomic modeling since the early 1960s.
Nowman, K.B.
core   +1 more source

Responses of positive standard and fractional linear systems and electrical circuits with derivatives of their inputs [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2018
T. Kaczorek
doaj   +1 more source

Doubly stochastic continuous time random walk

open access: yesPhysical Review Research
Since its introduction some 60 years ago, the Montroll-Weiss continuous time random walk has found numerous applications due its ease of use and ability to describe both regular and anomalous diffusion. Yet, despite its broad applicability and generality,
Maxence Arutkin, Shlomi Reuveni
doaj   +1 more source

Epigenetic reprogramming of lineage switching in cancer

open access: yesFEBS Letters, EarlyView.
Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı   +4 more
wiley   +1 more source

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