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Empirical tests in the 1990s found little evidence of poor countries catching up with rich - unconditional convergence - since the 1960s, and divergence over longer periods. This stylized fact spurred several developments in growth theory, including AK models, poverty trap models, and the concept of convergence conditional on determinants of steady ...
Michael Kremer, Jack Willis, Yang You
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Converging to Converge? A Comment [PDF]
Kremer, Willis, and You (2021) revisit cross-country convergence patterns over the last six decades. They provide evidence that the lack of convergence that applied early in the sample has now been replaced by modest convergence. They also argue this relationship is driven by convergence in various determinants of economic growth across countries and a
Daron Acemoglu, Carlos Molina
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Role of oxygen vacancies in ferroelectric or resistive switching hafnium oxide
HfO2 shows promise for emerging ferroelectric and resistive switching (RS) memory devices owing to its excellent electrical properties and compatibility with complementary metal oxide semiconductor technology based on mature fabrication processes such as
Jaewook Lee +7 more
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Promoting N2 electroreduction to ammonia by fluorine-terminating Ti3C2Tx MXene
Two-dimensional MXene-based materials are potential of presenting unique catalytic performances of electrocatalytic reactions. The surface functionalization of MXene-based catalysts is attractive for developing efficient electrocatalysts toward nitrogen ...
Yu Ding +8 more
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A key economic issue is whether poor countries or regions tend to grow faster than rich ones: are there automatic forces that lead to convergence over time in the levels of per capita income and product? We use the neoclassical growth model as a framework to study convergence across the 48 contiguous U.S. states.
Barro, Robert, Sala-i-Martin, Xavier
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Weak Convergence and Weak Convergence [PDF]
Abstract In this article, we deal with weak convergence on sequences in real normed spaces, and weak* convergence on sequences in dual spaces of real normed spaces. In the first section, we proved some topological properties of dual spaces of real normed spaces. We used these theorems for proofs of Section 3.
Keiko Narita +2 more
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In this study, we performed metal (Ag, Ni, Cu, or Pd) electroplating of core–shell metallic Ag nanowire (AgNW) networks intended for use as the anode electrode in organic light-emitting diodes (OLEDs) to modify the work function (WF) and conductivity of ...
Hyungseok Kang +7 more
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Protein nanoparticles directed cancer imaging and therapy
Cancer has been a serious threat to human health. Among drug delivery carriers, protein nanoparticles are unique because of their mild and environmentally friendly preparation methods. They also inherit desired characteristics from natural proteins, such
Yao Miao +4 more
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Deep Q-network to produce polarization-independent perfect solar absorbers: a statistical report
Using reinforcement learning, a deep Q-network was used to design polarization-independent, perfect solar absorbers. The deep Q-network selected the geometrical properties and materials of a symmetric three-layer metamaterial made up of circular rods on ...
Iman Sajedian +3 more
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Omni-directional wind-driven triboelectric nanogenerator with cross-shaped dielectric film
Triboelectric nanogenerators (TENGs) are actively being researched and developed to become a new external power unit for various electronics and applications.
Yoseop Shin +3 more
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