Results 91 to 100 of about 21,807,131 (299)

On (g − 2) μ from gauged U(1) X

Journal of High Energy Physics, 2022
We investigate an economical explanation for the (g − 2) μ anomaly with a neutral vector boson from a spontaneously broken U(1) X gauge symmetry. The Standard Model fermion content is minimally extended by 3 right-handed neutrinos.
Admir Greljo, Peter Stangl, Anders Eller Thomsen, Jure Zupan   +3 more
doaj   +1 more source

Environmental Sustainability in Wineries: How Contingency Factors and Environmental Management Accounting Tools Influence Environmental Performance?

Business Strategy and the Environment, EarlyView.
ABSTRACT How do wineries design sustainability practices and use environmental management accounting (EMA)? This study addresses that question by analyzing the influence of contingency factors on the adoption of sustainability practices and the use of EMA tools to improve the environmental performance of wineries. The research was carried out through a
Andréia Cittadin, Fabricia Silva da Rosa, Januario Monteiro   +2 more
wiley   +1 more source

Nonstandard numerical methods for a class of predator-prey models with predator interference

Electronic Journal of Differential Equations, 2007
We analyze a class of predator-prey models with Beddington-DeAngelis type functional response. The models incorporate the mutual interference between predators, which stabilizes predator-prey interactions even when only a linear intrinsic growth rate of ...
Dobromir T. Dimitrov, Hristo V. Kojouharov   +1 more
doaj  

Numerical Analysis of the Susceptible Exposed Infected Quarantined and Vaccinated (SEIQV) Reaction-Diffusion Epidemic Model

Frontiers in Physics, 2020
In this paper, two structure-preserving nonstandard finite difference (NSFD) operator splitting schemes are designed for the solution of reaction diffusion epidemic models.
Nauman Ahmed, Nauman Ahmed, Mehreen Fatima, Dumitru Baleanu, Dumitru Baleanu, Kottakkaran Sooppy Nisar, Ilyas Khan, Muhammad Rafiq, Muhammad Aziz ur Rehman, Muhammad Ozair Ahmad   +9 more
doaj   +1 more source

Computational and Machine‐Learning Studies of Ethylene Oligomerization

Carbon and Hydrogen, EarlyView.
This review focuses on recent advances in computational and machine‐learning studies of ethylene oligomerization, highlighting mainstream catalyst systems based on Co, Ta, Ti, Zr, and Hf, with particular emphasis on Fe‐ and Cr‐based catalysts and their controlling factors governing reactivity and LAO distribution.
Zhixin Qin, Zhihui Song, Heying Feng, Li Jin   +3 more
wiley   +1 more source

On the consequences of the fact that atomic levels have a certain width

, 2009
This note presents two ideas. The first one is that quantum theory has a fundamentally perturbative basis but leads to nonperturbative states which it would seem natural to take into account in the foundation of a theory of quantum phenomena.
Audoin C., CLAUDE BILLIONNET, Cohen-Tannoudji C., Jaksic V.   +3 more
core   +1 more source

Rational Design Strategies for Stimuli‐Responsive DNAzymes Using Modified and Artificial Nucleotides

Chemistry – A European Journal, EarlyView.
Activity control of RNA‐cleaving DNAzymes in response to external stimuli has attracted growing interest for applications in DNA‐based diagnostics, therapeutics, and dynamic DNA nanotechnology. This review summarizes rational design strategies for stimuli‐responsive DNAzymes using modified or artificial nucleotides, including split and caged DNAzymes ...
Yusuke Takezawa, Mitsuhiko Shionoya
wiley   +1 more source

Fixed Points of Self-embeddings of Models of Arithmetic

, 2018
We investigate the structure of fixed point sets of self-embeddings of models of arithmetic. In particular, given a countable nonstandard model M of a modest fragment of Peano arithimetic, we provide complete characterizations of (a) the initial segments
Bahrami, Saeideh, Enayat, Ali
core   +1 more source

Hidden Markov graphical models with state‐dependent generalized hyperbolic distributions

Canadian Journal of Statistics, EarlyView.
Abstract In this article, we develop a novel hidden Markov graphical model to investigate time‐varying interconnectedness between different financial markets. To identify conditional correlation structures under varying market conditions and accommodate shape features embedded in financial time series, we rely upon the generalized hyperbolic family of ...
Beatrice Foroni, Luca Merlo, Lea Petrella   +2 more
wiley   +1 more source

Nonstandard Foundations of Equilibrium Search Models [PDF]

We develop an equilibrium sequential search model which includes most of the literature as special cases. In particular, the model can accommodate heterogeneity in buyers’ search costs and demand functions and firms’ cost functions, with general demand ...
Michael T. Rauh
core