Results 91 to 100 of about 1,614,043 (308)

Unraveling Energy Flow Mechanisms in Semiconductors by Ultrafast Spectroscopy: Germanium as a Case Study

open access: yesAdvanced Science, EarlyView.
A multi‐technique pump‐probe setup capable of performing both transient reflectivity and time‐resolved Raman spectroscopy after ultrafast excitation, provides a comprehensive understanding of ultrafast electronic and phononic processes. Distinct decay rates for the temperature, frequency, and linewidth of the phonon mode in germanium are observed ...
Grazia Raciti   +10 more
wiley   +1 more source

A Random Walk to Economic Freedom? [PDF]

open access: yesThe European Journal of Comparative Economics, 2013
Given the wide use of economic freedom in economic literature it is imperative to understand how economic freedom evolves. Results suggest that levels of economic freedom are dominated by random shocks. Using a test for stationarity devised by Westerlund
Witte, Mark David, Hefner, Frank
doaj  

The Guarantees of Freedom [PDF]

open access: yes
Hayek (1960) distinguishes the institutions of English freedom, which guarantee the independence of judges from political interference in the administration of justice, from those of American freedom, which allow judges to restrain law-making powers of ...
Andrei Shleifer   +3 more
core  

Multifunctional Gelatin‐Based Smart Films Integrating Thermochromic Encryption, Temperature‐Regulated Photothermal Management, Reprocessability, and Biodegradability for Sustainable Applications

open access: yesAdvanced Science, EarlyView.
Multifunctional gelatin films synergizing thermochromic encryption, self‐regulating photothermal management, and closed‐loop recyclability offer sustainable solutions for intelligent packaging. ABSTRACT Multifunctional gelatin‐based smart films are engineered by incorporating hyperbranched polyglycerol (HBPG) as a plasticizer, dialdehyde β‐cyclodextrin
Yuehong Zhang   +4 more
wiley   +1 more source

Poverty and Economic Freedom: Evidence from Cross-Country Data [PDF]

open access: yes
This paper explores the empirical relationship between poverty and economic freedom. In doing so, it estimates the levels of absolute poverty for a panel of over forty developing countries and then utilizes fixed effects and GMM-IV estimators to derive ...
M.G. Quibria, Rana Hasan, Yangseon Kim
core  

Urea‐Formaldehyde Resin Confined Silicon Nanodots Composites: High‐Performance and Ultralong Persistent Luminescence for Dynamic AI Information Encryption

open access: yesAdvanced Science, EarlyView.
Schematic illustration of SiNDs composite materials synthesis and its internal photophysical process mechanism. And an AI‐assisted dynamic information encryption process. ABSTRACT Persistent luminescence materials typically encounter an intrinsic trade‐off between high phosphorescence quantum yield (PhQY) and ultralong phosphorescence lifetime.
Yulu Liu   +9 more
wiley   +1 more source

Improving the measurement of economic freedom by replacing government size with government effectiveness [PDF]

open access: yesThe European Journal of Comparative Economics
The Fraser Institute’s Economic Freedom of the World index and the Heritage Foundation’s Index of Economic Freedom allow researchers to empirically test the hypothesis that greater economic freedom leads to higher economic growth.
Thomas R. Scholz
doaj   +1 more source

Competitiveness, Economic Freedom and Real Exchange Rate. Evidence from Romania [PDF]

open access: yes
In the new context of European Integration, Romania has to improve some important macroeconomic indicators, such as: competitiveness, economic freedom and real exchange rate for a sustainable economic growth.
Herciu, Mihaela, Toma, Ramona
core   +1 more source

Advancing Energy Materials by In Situ Atomic Scale Methods

open access: yesAdvanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
Progress in in situ atomic scale methods leads to an improved understanding of new and advanced energy materials, where a local understanding of complex, inhomogeneous systems or interfaces down to the atomic scale and quantum level is required. Topics from photovoltaics, dissipation losses, phase transitions, and chemical energy conversion are ...
Christian Jooss   +21 more
wiley   +1 more source

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