The Proceedings of the National Academy of Sciences of the United States of America, usually referred to as PNAS, is the official journal of the United States National Academy of Sciences (NAS). PNAS is an important scientific journal that printed its first issue in 1915 and continues to publish highly cited research reports, commentaries, reviews, perspectives, feature articles, profiles, letters to the editor, and actions of the Academy. Coverage in PNAS broadly spans the biological, physical, and social sciences. Although most of the papers published in the journal are in the biomedical sciences, PNAS recruits papers and publishes special features in the physical and social sciences and in mathematics. PNAS is published weekly in print, and daily online in PNAS Early Edition. PNAS was established by NAS in 1914, with its first issue published in 1915. The NAS itself had been founded in 1863 as a private institution, but chartered by the US Congress, with the goal to "investigate, examine, experiment, and report upon any subject of science or art." By 1914, the Academy was well established.
Machine learning & AI
Machine learning and AI are highly unstable in medical image reconstruction, and may lead to false positives and false negatives, a new study suggests.
May 12, 2020
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Electronics & Semiconductors
Rechargeable batteries are at the heart of many new technologies involving, for example, the increased use of renewable energies. More specifically, they are employed to power electric vehicles, cell phones, and laptops. ...
May 07, 2020
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256
Engineering
Imagine wind turbine blades that change shape to achieve the most efficiency in varying wind speeds, or airplane wings that bend and alter their own form without hydraulic rudders and ailerons. These are two potential uses ...
May 07, 2020
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Engineering
Theologians once pondered how many angels could dance on the head of a pin. Not to be outdone, Cornell researchers who build nanoscale electronics have developed microsensors so tiny, they can fit 30,000 on one side of a ...
Apr 22, 2020
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Engineering
When people suffer debilitating injuries or illnesses of the nervous system, they sometimes lose the ability to perform tasks normally taken for granted, such as walking, playing music or driving a car. They can imagine doing ...
Apr 20, 2020
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Energy & Green Tech
Electrical energy derived from renewable sources could be used to rearrange bonds in carbon dioxide (CO2) and water molecules into complex hydrocarbons, which can then be burnt to produce new energy and CO2, ultimately enabling ...
Apr 16, 2020 feature
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207
Electronics & Semiconductors
Scientists at Singapore's Nanyang Technological University (NTU Singapore) have created a paper-like material derived from pollen that bends and curls in response to changing levels of environmental humidity.
Apr 06, 2020
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189
Computer Sciences
As the world grapples with the COVID-19 pandemic, a new mathematical model could offer insights on how to improve future epidemic predictions based on how information mutates as it is transmitted from person to person and ...
Apr 06, 2020
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32
Business
New privacy laws like Europe's General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA) have spawned a new industry of companies and platforms advertising that they can anonymize your data ...
Apr 03, 2020
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48
Energy & Green Tech
Both sides of the political spectrum recognize a need to reduce American dependence on carbon-based energy sources, but how the nation does so remains a divisive issue, a new study from Indiana University researchers has ...
Mar 26, 2020
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