Results 41 to 50 of about 892 (228)

Effect of finite beta on neoclassical transport characteristics in CFQS quasi-axisymmetric stellarator

Journal of Physics Communications
CFQS is the world’s first modular-coil-type quasi-axisymmetric stellarator, which is currently under construction. This study systematically investigates the effect of finite beta (volume-averaged beta, 〈 β 〉) on the neoclassical transport ...
Yang Lang, Mitsutaka Isobe, Akihiro Shimizu, Hiroyuki Yamaguchi, Kunihiro Ogawa, Haifeng Liu, Yuhong Xu   +6 more
doaj   +1 more source

Effect of Magnetic Islands on Neoclassical Heat Diffusivity in a Global Tokamak Simulation

Contributions to Plasma Physics, EarlyView.
ABSTRACT Resonant magnetic perturbations (RMPs) alter magnetic field topology via island formation and can modify core transport in toroidal fusion devices. Using the global gyrokinetic particle‐in‐cell code XGC‐S, originally developed for stellarator geometries, we quantify how island topology affects neoclassical heat transport in a circular tokamak ...
Joseph X. Li, Toseo Moritaka, Ryutaro Kanno, Gakushi Kawamura, Robert Hager, C.‐S. Chang   +5 more
wiley   +1 more source

The Unintended Consequences of Sugar‐Sweetened Beverage Taxes on Sales and Prices of Beer Beverages

Health Economics, EarlyView.
ABSTRACT This paper estimates the causal effect of Berkeley's sugar‐sweetened beverage (SSB) tax on beer purchases and prices using retail scanner data from 2014 to 2015. Applying both synthetic control and difference‐in‐differences (DID) approaches, we find that the tax reduced beer purchases within Berkeley by 8.9%, while having a negligible effect ...
Lei Pan, Xiaoyong Zheng
wiley   +1 more source

Investigation of RMP effects on W transport in the pedestal region in an ITER 15 MA H-mode scenario, using the nonlinear MHD code JOREK

Nuclear Fusion
Heavy impurities, such as tungsten (W) accumulating in the confined plasma core of tokamaks are detrimental to their performance and can lead to plasma disruptions due to radiative collapses.
S.Q. Korving, G.T.A. Huijsmans, A. Loarte, M. Becoulet, the JOREK Team   +4 more
doaj   +1 more source

Does Economic Growth Drive Equitable Water and Sanitation Access? Assessing Inequality Reduction Across 64 Nations

Sustainable Development, EarlyView.
ABSTRACT This article examines whether economic growth reduces inequalities in access to water and sanitation across 64 countries over an average period of 13.5 years. Drawing on disaggregated data by income quintiles and rural–urban location, and employing ordinary least squares (OLS), two‐stage least squares (2SLS), and Seemingly Unrelated Regression
Marcos García‐López, Samara López‐Ruiz, Gabriela Cuadrado‐Quesada   +2 more
wiley   +1 more source

Effects of non-axisymmetric magnetic field on neoclassical transport and ambipolar electric field in tokamak plasmas

Journal of Physics Communications
This study investigates how resonant magnetic perturbation (RMP) govern neoclassical transport and ambipolar electric field dynamics in tokamak plasmas.
Hanhui Li, Zhenggong Han, Yanyan Lu
doaj   +1 more source

The Role of Global Political Economy in Community‐Based Adaptation to Climate Change—Practitioners' Experience and Opinions

Sustainable Development, EarlyView.
ABSTRACT Community‐based adaptation scholars and practitioners acknowledge that power asymmetries pose significant barriers to project impact. Nevertheless, there is little research on the role of the global political economy as the root cause of vulnerability.
Tom Selje, Alexandra Klepp, Boris Heinz
wiley   +1 more source

Investor Heterogeneity, Sustainable Board Governance, and Corporate Social Responsibility Performance: Empirical Evidence From Europe

Sustainable Development, EarlyView.
ABSTRACT This study applies an agency‐theoretical lens to examine how investor heterogeneity, specifically institutional, foreign, and domestic ownership, influences corporate social responsibility (CSR) performance. Drawing on extensions of classical agency theory that account for heterogeneous shareholder preferences and principal‐principal conflicts,
Maximilian Focke
wiley   +1 more source

Controlling impurity transport in 5D gyrokinetic simulations using a transport barrier

Nuclear Fusion
The effects of transport barriers on impurity transport, specifically helium (He) and tungsten (W), are investigated using the global, flux-driven, full-F, 5D gyrokinetic code GYSELA.
G. Lo-Cascio, E. Gravier, M. Lesur, T. Réveillé, Y. Sarazin, X. Garbet, K. Lim, T. Rouyer, A. Guillevic   +8 more
doaj   +1 more source

Lagrangian formulation of neoclassical transport theory [PDF]

The Physics of Fluids, 1983
Neoclassical transport theory is developed in a Lagrangian formulation in contrast to the usual Eulerian development. The Lagrangian formulation is constructed from the three actions: magnetic moment, parallel invariant, and bounce-averaged poloidal flux.
Bernstein, I. B., Molvig, K.
openaire   +1 more source