Results 51 to 60 of about 18,041,869 (292)

Optimality of Refraction Strategies for Spectrally Negative Lévy Processes [PDF]

open access: yesSIAM Journal of Control and Optimization, 2015
We revisit a stochastic control problem of optimally modifying the underlying spectrally negative Levy process. A strategy must be absolutely continuous with respect to the Lebesgue measure, and the objective is to minimize the total costs of the running
D. Hernández-Hernández   +2 more
semanticscholar   +1 more source

Perfusion Bioreactor Culture Incorporating Mechanical Confinement Enhances Mesenchymal Stem Cell Extracellular Vesicle Production and Wound Healing Potential

open access: yesAdvanced Materials Technologies, EarlyView.
Scalable manufacturing challenges and limited potency remain two of the most intransigent issues limiting clinical translation of EV therapeutics. Mechanical cues can induce phenotypic changes and increased vesiculation in EV source cells without the use of extraneous reagents, chemicals, and/or cargo, thereby potentially drastically improving the ...
Emily H. Powsner   +10 more
wiley   +1 more source

Stochastic flows for Lévy processes with Hölder drifts

open access: yesRevista matemática iberoamericana, 2015
In this paper, we study the following stochastic differential equation (SDE) in R d Rd: dX t =dZ t +b(t,X t )dt,X 0 =x, whereZ is a Levy process. We show that for a large class of Levy processes Z and Holder continuous drifts b , the SDE above has a ...
Zhen-Qing Chen, R. Song, Xicheng Zhang
semanticscholar   +1 more source

A Generalization of the Space-Fractional Poisson Process and its Connection to some Lévy Processes [PDF]

open access: yes, 2015
The space-fractional Poisson process is a time-changed homogeneous Poisson process where the time change is an independent stable subordinator. In this paper, a further generalization is discussed that preserves the Levy property.
F. Polito, E. Scalas
semanticscholar   +1 more source

Nanozyme Microrobots: Programmable Spatiotemporal Catalysis for Targeted Therapy and Diagnostics

open access: yesAdvanced Science, EarlyView.
This review presents nanozyme microrobots as emerging catalytic systems that integrate mobility, external actuation, and adaptive reactivity to achieve precise biochemical functions. By examining mobility‐regulated catalysis, spatial targeting, integrated designs, and translational demonstrations, the article highlights how nanozyme robotics enables ...
Hong Huy Tran   +5 more
wiley   +1 more source

Transportation distance between the Lévy measures and stochastic equations for Lévy-type processes

open access: yesModern Stochastics: Theory and Applications, 2014
The notion of the transportation distance on the set of the Lévy measures on $\mathbb{R}$ is introduced. A Lévy-type process with a given symbol (state dependent analogue of the characteristic triplet) is proved to be well defined as a strong solution to
T. Kosenkova, A. Kulik
doaj   +1 more source

Combinatorial Lévy processes [PDF]

open access: yes, 2016
Combinatorial Levy processes evolve on general state spaces of countable combinatorial structures. In this setting, the usual Levy process properties of stationary, independent increments are defined in an unconventional way in terms of the symmetric ...
Harry Crane
semanticscholar   +1 more source

Heterogeneous Integration of Flipped Oxide Heterostructure Membranes for Nanoelectronics

open access: yesAdvanced Electronic Materials, EarlyView.
A flipped electronically reconfigurable STO/LAO freestanding membrane is demonstrated and integrated with various host platforms via controlled transfer. Using ultra‐low‐voltage electron‐beam lithography, conductive nanostructures are created at the buried STO/LAO interface. This novel approach enables heterogeneous integration of flipped complex oxide
Ruiqi Sun   +9 more
wiley   +1 more source

Special greeks of a variance-gamma driven vasicek model

open access: yesScientific African, 2023
Abrupt happenings in financial markets have resulted to the need to adopt Lévy processes such as a variance gamma process in modelling financial derivatives since it has the ability to capture jumps that occur in such scenario.
Adaobi M. Udoye, Lukman S. Akinola
doaj   +1 more source

Price Premiums for Single‐Name and Compound‐Name Geographical Indications in Swiss Cheese Trade

open access: yesAgribusiness, EarlyView.
ABSTRACT Geographical indications (GIs) have become increasingly important in agri‐food markets, especially in Europe. For Swiss cheese imports and exports, we analyze whether GIs are associated with higher trade prices. We find that price premiums can be obtained for both exports and imports. However, this is only the case for cheeses with single name
Judith Irek
wiley   +1 more source

Home - About - Disclaimer - Privacy