Results 51 to 60 of about 2,986 (264)

Implementation of Neoclassical Effects in Momentum Transport Analysis at LHD

, 2017
Plasma rotation plays an important role in the suppression of turbulence, leading to an increase in energy and particle confinement. Significant rotation also leads to a stabilisation of the resistive wall mode.
YOKOYAMA, Masayuki, SEKI, Ryosuke, IDA, Katsumi, EMOTO, Masahiko, BECKERS, Jasper, YOSHINUMA, Mikirou, JASPERS, Roger   +6 more
core   +3 more sources

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

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

The Bazaar as a Model for Knowledge Work

Knowledge and Process Management, EarlyView.
ABSTRACT This paper presents fieldwork that extends existing metaphors of knowledge work as a process shaped by hierarchical or market forces. A qualitative, ethnographic study of six knowledge‐intensive businesses in two countries identifies striking parallels with the Middle Eastern bazaar in contrast to Western impersonal markets and hierarchies. We
Reed Elliot Nelson, Andrew B. Hargadon, José Osvaldo De Sordi   +2 more
wiley   +1 more source

Low Z impurity transport in tokamaks. [Neoclassical transport theory]

, 1978
Low Z impurity transport in tokamaks was simulated with a one-dimensional impurity transport model including both neoclassical and anomalous transport. The neoclassical fluxes are due to collisions between the background plasma and impurity ions as well ...
S.P. Hirshman, Hawryluk, R.J., Suckewer, S., S. Suckewer, Hirshman, S.P., R.J. Hawryluk   +5 more
core   +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

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

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

Effect of toroidal rotation on impurity transport in tokamak improved confinement

Nuclear Fusion
The centrifugal force effects from toroidal rotation in improved confinement plasmas are analyzed on high- Z impurities in tokamaks. Tungsten (W) transport simulations are performed using the impurity transport code developed in the integrated code TASK.
Shota Mochinaga, Naohiro Kasuya, Atsushi Fukuyama, Masatoshi Yagi   +3 more
doaj   +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