Results 111 to 120 of about 5,917,172 (242)
Journal of Time Series Analysis, EarlyView.ABSTRACT The paper deals with the construction of a synthetic indicator of economic growth, obtained by projecting a quarterly measure of aggregate economic activity, namely gross domestic product (GDP), into the space spanned by a finite number of smooth principal components, representative of the medium‐to‐long‐run component of economic growth of a ...
Alessandro Giovannelli +2 more
wiley +1 more source
Circular Restricted Three Body Manifold Trajectories via Koopman Operator Theory [PDF]
There are a multitude of computational techniques capable of modeling the behavior of nonlinear dynamic systems over time. In the field of astrodynamics, the most frequently used tools are numerical integrators, specifically Runge-Kutta algorithms. These
Langton, Lindsey
core
Boosting PM2.5 short-term prediction by coupling graph attention and koopman networks
Computational Urban ScienceAccurately predicting PM2.5 concentrations remains a major challenge due to the complex and nonlinear nature of its formation and transport processes. Traditional models often struggle to capture the spatiotemporal dynamics of PM2.5, particularly under ...
Yuhan Yu +6 more
doaj +1 more source
Psychology and Psychotherapy: Theory, Research and Practice, EarlyView.Abstract Objectives While rates of self‐harm are rising in the United Kingdom, people who self‐harm can often struggle to access appropriate treatment. This study sought to explore adult stakeholders’ perspectives and experiences of the barriers to, and facilitators of, accessing support for self‐harm and also how services could be better tailored to ...
Tara Chauhan +6 more
wiley +1 more source
A Koopman Operator Tutorial with Othogonal Polynomials [PDF]
, 2022 The Koopman Operator (KO) offers a promising alternative methodology to solve ordinary differential equations analytically. The solution of the dynamical system is analyzed in terms of observables, which are expressed as a linear combination of the ...
Linares, Richard +2 more
core
Public Administration Review, EarlyView.ABSTRACT The moral decision‐making and behavior of politicians is influenced by the distinctive and characteristic attributes of political office. This literature review analyzes 80 articles from public administration, political science and related disciplines to systematically map these attributes and their underlying mechanisms. This study identifies
Manon Koopman +2 more
wiley +1 more source
FlightKooba: A Fast Interpretable FTP Model
IEEE AccessFlight trajectory prediction (FTP) and similar time series tasks typically require capturing smooth latent dynamics hidden within noisy signals.
Jing Lu +4 more
doaj +1 more source
The World Economy, EarlyView.ABSTRACT China's rapid ascent as a global machinery exporter raises fundamental questions about competitive resilience of incumbent economies. This paper examines whether China's gains in revealed comparative advantage (RCA) are associated with declining competitive positions among 24 incumbent economies and whether such changes coincide with ...
Hyungbae Gil, Oonkyu Lee, Hangjung Zo
wiley +1 more source
Is the World Getting Smaller? Network‐Driven Heterogeneity in Gravity‐Model Elasticities
The World Economy, EarlyView.ABSTRACT Gravity models constitute the workhorse of empirical international trade research, yet the temporal stability of their core parameters—distance and GDP elasticities—remains underexplored, particularly in relation to the evolving structure of trade networks.
Zsolt T. Kosztyán +2 more
wiley +1 more source
International Transactions in Operational Research, Volume 34, Issue 1, Page 460-500, January 2027.Abstract The application of automated ground vehicles (AGVs) is well‐established in closed environments such as port terminals, while their operation in open areas remains challenging. In this work, we set out to overcome this limitation by introducing platooning as a transfer mode in heterogeneous vehicle networks.
Nadia Pourmohammad‐Zia +2 more
wiley +1 more source