Results 51 to 60 of about 459,919 (378)

e-Government Lessons from South Africa 2001-2011: Institutions, State of Progress and Measurement

open access: yesThe African Journal of Information and Communication, 2012
Electronic governance is the future of public governance globally. Governments that do not make the transition from paper-based systems of public administration to electronic platforms of public governance may swiftly undermine their chances of ...
Fanie Cloete
doaj   +1 more source

AUTOMATION, STAGNATION, AND THE IMPLICATIONS OF A ROBOT TAX

open access: yesMacroeconomic Dynamics, 2020
We assess the long-run growth effects of automation in the overlapping generations framework. Although automation implies constant returns to capital and, thus, an AK production side of the economy, positive long-run growth does not emerge. The reason is
Emanuel Gasteiger, K. Prettner
semanticscholar   +1 more source

Electricity Generation From Ambient Water Evaporation in the Absence of Sunlight via PVA‐Based Porous Hydrogels

open access: yesAdvanced Functional Materials, EarlyView.
In this article, a water‐evaporation driven energy harvester is devised that works even in the absence of sunlight. This is achieved by combining PVA hydrogel with thermoelectrics (TEG) to directly capture energy from water evaporation. Under mild conditions (RH 40%, T of 26 °C, and 2.8 m s−1 wind), 1.71 mW (1.02 W m−2) power can be generated, >3 fold ...
Zichen Gong, Ady Suwardi, Jing Cao
wiley   +1 more source

One-dimensional radiation-hydrodynamic simulations of imploding spherical plasma liners with detailed equation-of-state modeling

open access: yes, 2012
This work extends the one-dimensional radiation-hydrodynamic imploding spherical argon plasma liner simulations of T. J. Awe et al. [Phys. Plasmas 18, 072705 (2011)] by using a detailed tabular equation-of-state (EOS) model, whereas Awe et al.
Cassibry, J. T.   +4 more
core   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Computational Fluid Dynamics of Blood Flow in an Extracorporeal Blood Circuit for the Analysis of Thrombogenic Hemodynamic Factors

open access: yesJournal of Biomechanical Science and Engineering, 2011
Blood flow in a filter for an extracorporeal blood circuit was analyzed numerically to assess fluid mechanical quantities related to thrombogenesis. Results showed stagnant flow regions, in particular at the downstream side of the ceiling of a filter.
Masanori NAKAMURA   +2 more
doaj   +1 more source

Ion and Solvent Dynamics in Charged 2D Clay Nanoslits with Unprecedented Ångström‐Precise Slit Height Control

open access: yesAdvanced Functional Materials, EarlyView.
The slit height of fluorohectorite 2D‐nanochannels is tuned with Å‐precision (2.4–250 Å). Slit‐height‐dependent ion and water mobilities are quantified by applying EIS, PFG‐NMR, and SFG‐NMR with MD simulations guiding interpretation. Diffuse properties are investigated with CP‐AFM, MD, and PB.
Max Stevenson   +11 more
wiley   +1 more source

Una valutazione dell’austerità e del debito pubblico italiani (An assessment of Italian austerity programs and public debt)

open access: yesMoneta e Credito, 2021
Partendo da un’analisi del debito di Sylos Labini (2003) e Pasinetti (1998), il presente articolo re-esamina criticamente le raccomandazioni di politica economica suggerite dalle teorie che scoraggiano l’intervento dello stato e sostengono l’austerità ...
Daniela Tavasci, Luigi Ventimiglia
doaj   +1 more source

Growth of Legionella during COVID-19 lockdown stagnation

open access: yesEnvironmental Science: Water Research & Technology, 2020
While “avoiding stagnation” has been the mantra of building water experts, support for how this terminology is used is not overly convincing. Carefully nuanced COVID stagnation studies can improve water quality research and communication strategies.
W. Rhoads, F. Hammes
semanticscholar   +1 more source

Ultrafast Adhesion/Friction Bidirectionally Switchable Control by Vibration

open access: yesAdvanced Functional Materials, EarlyView.
Bioinspired gradient smooth architectures enable vibration‐switchable adhesion/friction with 62.02 kPa adhesion strength, 131.57 kPa shear strength, tilt angles ≥ 3°, roughness ≥ Ra 0.8 µm, 400 Hz antivibration robustness, and dual‐mode control. The synergy of geometry optimization and vibration modulation tuning bridges multidomain adaptability and ...
Jian Chen   +10 more
wiley   +1 more source

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