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Dr. Varsha Ramachandran from the Center for Astronomy of Heidelberg University (ZAH) and her colleagues uncovered the first “stripped” star of intermediate-mass. This discovery marks a missing link in our picture of stellar evolution toward systems with merging neutron stars, which are crucial to our understanding of the origin of heavy elements, such as silver and gold. Dr. Ramachandran is a postdoc in the research group of Dr. Andreas Sander, located at ZAH’s Astronomisches Rechen-Institut (ARI). These results were now published in Astronomy & Astrophysics.

The team of researchers discovered the first representative of the long-predicted, but as yet unconfirmed population of intermediate-mass stripped stars. “Stripped stars” are stars that have lost most of their outer layers, revealing their hot and dense helium-rich core, which results from the nuclear fusion of hydrogen to helium. Most of these stripped stars are formed in binary star systems in which one star’s strong gravitational pull peels off and accretes matter from its companion.

For a long time, astrophysicists have known of low-mass stripped stars, known as subdwarfs, as well as their massive cousins, known as Wolf-Rayet stars. But until now, they have never been able to find any of the so-called “intermediate-mass stripped stars,” raising questions whether our basic theoretical picture needs a major revision.

NASA technicians have installed the heat shield on the Artemis 2 Orion spacecraft, which will carry astronauts around the moon in late 2024.

Associated Press.

“What a silent tension,” said Sophia as she read the room. Sophia is developed by Hanson Robotics and is the first robot innovation ambassador for the UN Development Program. “Humanoid robots have the potential to lead with a greater level of efficiency and effectiveness than human leaders.”

Use WebMD’s slideshow to find out why symptoms like arm pain, fatigue, lightheadedness, and nausea are signs of heart trouble — and what you should do about it.

When thinking of the applications of low-loss materials in 5G devices, the first that comes to mind for most is 5G smartphones. After all, low-loss materials are integral in enabling advanced 5G antennas-in-packages (AiP) for smartphones, and high-profile smartphone manufacturers like Apple have gone back and forth about which low-loss material they chose for their 5G antennas in their flagship phones like the iPhone. However, another 5G application for low-loss materials hiding in plain sight will act as an important driver for this US$1.8 billion market as forecast by IDTechEx: 5G customer premises equipment (CPEs).

5G fixed wireless access (5G FWA) and cpes.

This application area is based on the increasing deployment of 5G fixed wireless access (FWA). FWA offers wireless internet access to homes and businesses without requiring the laying of fiber or cables to facilitate connectivity. FWA enables customers to get high-speed internet access with speeds comparable to wired broadband connections in places where fiber or cable installation is too expensive or difficult. While fixed wireless technologies based on 4G/LTE do exist, they cannot match the speeds of wired broadband and are also not economically viable to deploy.

Engineers at the University of Illinois Urbana-Champaign have developed a new test that can predict the durability of cement in seconds to minutes—rather than the hours it takes using current methods. The test measures the behavior of water droplets on cement surfaces using computer vision on a device that costs less than $200. The researchers said the new study could help the cement industry move toward rapid and automated quality control of their materials.

The results of the study, led by Illinois civil and environmental engineering professor Nishant Garg, are reported in the journal npj Materials Degradation. The paper is titled “Rapid prediction of cementitious initial sorptivity via surface wettability.”

Continue reading “Engineers develop fast, automated, affordable test for cement durability” »

The competitive nature of AI development poses a dilemma for organizations, as prioritizing speed may lead to neglecting ethical guidelines, bias detection, and safety measures. Known and emerging concerns associated with AI in the workplace include the spread of misinformation, copyright and intellectual property concerns, cybersecurity, data privacy, as well as navigating rapid and ambiguous regulations. To mitigate these risks, we propose thirteen principles for responsible AI at work.

Page-utils class= article-utils—vertical hide-for-print data-js-target= page-utils data-id= tag: blogs.harvardbusiness.org, 2007/03/31:999.359663 data-title=13 Principles for Using AI Responsibly data-url=/2023/06/13-principles-for-using-ai-responsibly data-topic= Technology and analytics data-authors= Brian Spisak; Louis B. Rosenberg; Max Beilby data-content-type= Digital Article data-content-image=/resources/images/article_assets/2023/06/Jun23_30_200245321-001-383x215.jpg data-summary=

Companies need to consider a set of risks as they explore how to adopt new tools.

Plants have the unique ability to regenerate entirely from a somatic cell, i.e., an ordinary cell that does not typically participate in reproduction. This process involves the de novo (or new) formation of a shoot apical meristem (SAM) that gives rise to lateral organs, which are key for the plant’s reconstruction.

At the cellular level, SAM formation is tightly regulated by either positive or negative regulators (genes/protein molecules) that may induce or restrict shoot regeneration, respectively. But which molecules are involved? Are there other regulatory layers that are yet to be uncovered?

To seek answers to the above questions, a research group led by Nara Institute of Science and Technology (NAIST), Japan studied the process in Arabidopsis, a plant commonly used in genetic research. Their research—which was published in Science Advances —identified and characterized a key negative regulator of shoot regeneration.

This benefits customers by accelerating access to future vehicles that feature the latest technology while also enabling their current vehicles to be eligible to receive updates and improvements over time—unlocking additional value beyond the initial point of purchase. And for large enterprises, shorter development cycles with less ground-up engineering can equate to significant cost savings and allow more investment in innovation.

Beyond vehicles themselves, the tools, techniques and processes that are required to engineer and manufacture at scale are also benefitting from developments in the latest hardware technology. Advancements in raw material chemistry and processing, fabrication and physical sciences are leading to lighter, stronger and better-performing vehicle applications in parallel with greater connectivity.

As advancements in transportation technology continue to evolve, it’s important for companies to balance their focus on the continual development of both hardware and software technologies. Forgoing advancements in one without investing in the development of the other can lead to significant risks and missed opportunities for long-term success.