Results 81 to 90 of about 2,547,829 (287)

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

On an Aggregation Theory for Indicators Expressing Behaviors of Complex Systems With an Application to Sustainability

Sustainable Development, EarlyView.
ABSTRACT Certain attributes of large‐scale complex systems are often expressed through sets of indicators. For example, the sustainability of an entity, be it a nation, a city, an energy system, a corporation etc., can be effectively represented by indicators and corresponding data series.
Vassilis S. Kouikoglou, Yannis A. Phillis   +1 more
wiley   +1 more source

Dynamics of zonal flow-like structures in the edge of the TJ-II stellarator

, 2012
The dynamics of fluctuating electric field structures in the edge of the TJ-II stellarator, that display zonal flow-like traits, is studied. These structures have been shown to be global and affect particle transport dynamically [J.A. Alonso et al., Nucl.
Alonso J, B Ph Van Milligen, C Hidalgo, C Silva, D Carralero, Helander P, Hidalgo C, J A Alonso, J Arévalo, J L Velasco, M A Pedrosa, Motojima O, Pedrosa M A, Scott B, Tala T, Velasco J, Velasco J, Velasco J L Arévalo J Alonso J A, Wobig H, Wobig H, Xu Y   +20 more
core   +1 more source

Impurity transport in a mixed-collisionality stellarator plasma [PDF]

, 2017
A potential threat to the performance of magnetically confined fusion plasmas is the problem of impurity accumulation, which causes the concentration of highly charged impurity ions to rise uncontrollably in the center of the plasma and spoil the energy ...
Helander, Per, Mollén, Albert, Newton, Sarah L., Smith, Håkan M.   +3 more
core   +2 more sources

Advancing Sustainable Development Through Exports of Clean Energy Products From Emerging Asian Economies: A Poisson Pseudo Maximum Likelihood Estimation Approach

Sustainable Development, EarlyView.
ABSTRACT The promotion of clean energy is critical to achieving sustainable development. This study investigates the factors that affect the exports, trade potential, and revealed comparative advantage (RCA) of clean energy products (CEPs) in the emerging Asian economies (EAEs).
Arvind Goswami, Rajesh Kumar Jangir, Vijay Kumar Chattu   +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

Critical gradient turbulence optimization toward a compact stellarator reactor concept

Physical Review Research, 2023
Integrating turbulence into stellarator optimization is achieved by targeting the onset for the ion-temperature-gradient mode, highlighting effects of field line curvature, parallel connection length, local magnetic shear, and flux surface expansion. The
G. T. Roberg-Clark, G. G. Plunk, P. Xanthopoulos, C. Nührenberg, S. A. Henneberg, H. M. Smith   +5 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

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

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