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Atlas of proteins reveals inner workings of cells

Computers and Math from Science Daily Feed - Wed, 07/10/2024 - 10:09am
Researchers discover how proteins behave inside cells using AI, which has the potential to guide drug design.
Categories: Science

Atlas of proteins reveals inner workings of cells

Matter and energy from Science Daily Feed - Wed, 07/10/2024 - 10:09am
Researchers discover how proteins behave inside cells using AI, which has the potential to guide drug design.
Categories: Science

Compact and scalable multiple-input multiple-output systems for future 5G networks

Matter and energy from Science Daily Feed - Wed, 07/10/2024 - 10:09am
A 28GHz time-division multiple-input multiple-output (MIMO) receiver with eight radio frequency elements, each occupying just 0.1 mm, has been developed using 65nm CMOS technology. This innovative design reduces chip size for beam-forming. Achieving -23.5 dB error vector magnitude in 64-quadrature amplitude modulation and data rates up to 9.6 Gbps, this receiver offers the highest area efficiency and fastest beam switching among reported MIMO receivers.
Categories: Science

Compact and scalable multiple-input multiple-output systems for future 5G networks

Computers and Math from Science Daily Feed - Wed, 07/10/2024 - 10:09am
A 28GHz time-division multiple-input multiple-output (MIMO) receiver with eight radio frequency elements, each occupying just 0.1 mm, has been developed using 65nm CMOS technology. This innovative design reduces chip size for beam-forming. Achieving -23.5 dB error vector magnitude in 64-quadrature amplitude modulation and data rates up to 9.6 Gbps, this receiver offers the highest area efficiency and fastest beam switching among reported MIMO receivers.
Categories: Science

A new material derived from graphene improves the performance of neuroprostheses

Matter and energy from Science Daily Feed - Wed, 07/10/2024 - 10:09am
Neuroprostheses allow the nervous system of a patient who has suffered an injury to connect with mechanical devices that replace paralyzed or amputated limbs. A study demonstrates in animal models how EGNITE, a derivative of graphene, allows the creation of smaller electrodes, which can interact more selectively with the nerves they stimulate, thus improving the efficacy of the prostheses.
Categories: Science

A breakthrough on the edge: One step closer to topological quantum computing

Matter and energy from Science Daily Feed - Wed, 07/10/2024 - 10:09am
Researchers have achieved a significant breakthrough in quantum materials, potentially setting the stage for advancements in topological superconductivity and robust quantum computing.
Categories: Science

A breakthrough on the edge: One step closer to topological quantum computing

Computers and Math from Science Daily Feed - Wed, 07/10/2024 - 10:09am
Researchers have achieved a significant breakthrough in quantum materials, potentially setting the stage for advancements in topological superconductivity and robust quantum computing.
Categories: Science

Researchers customize AI tools for digital pathology

Computers and Math from Science Daily Feed - Wed, 07/10/2024 - 10:09am
Scientists developed and tested new artificial intelligence (AI) tools tailored to digital pathology--a rapidly growing field that uses high-resolution digital images created from tissue samples to help diagnose disease and guide treatment.
Categories: Science

Young people believe that artificial intelligence is a valuable tool for healthcare

Computers and Math from Science Daily Feed - Wed, 07/10/2024 - 10:09am
Children and young people are generally positive about artificial intelligence (AI) and think it should be used in modern healthcare.
Categories: Science

The origins of dark comets

Space and time from Science Daily Feed - Wed, 07/10/2024 - 10:09am
Up to 60% of near-Earth objects could be dark comets, mysterious asteroids that orbit the sun in our solar system that likely contain or previously contained ice and could have been one route for delivering water to Earth, according to a new study.
Categories: Science

Strong evidence for intermediate-mass black hole in Omega Centauri

Space and time from Science Daily Feed - Wed, 07/10/2024 - 10:08am
Most known black holes are either extremely massive, like the supermassive black holes that lie at the cores of large galaxies, or relatively lightweight, with a mass of under 100 times that of the Sun. Intermediate-mass black holes (IMBHs) are scarce, however, and are considered rare 'missing links' in black hole evolution.
Categories: Science

BESSY II shows how solid-state batteries degrade

Matter and energy from Science Daily Feed - Wed, 07/10/2024 - 10:07am
Solid-state batteries have several advantages: they can store more energy and are safer than batteries with liquid electrolytes. However, they do not last as long and their capacity decreases with each charge cycle. But it doesn't have to stay that way: Researchers are already on the trail of the causes.
Categories: Science

Researchers show promising material for solar energy gets its curious boost from entropy

Matter and energy from Science Daily Feed - Wed, 07/10/2024 - 10:07am
Researchers discovered a microscopic mechanism that solves in part the outstanding performance achieved by a new class of organic semiconductors known as non-fullerene acceptors (NFAs).
Categories: Science

Could high-temperature single crystals enable electric vehicles capable of traveling up to one million kilometers?

Matter and energy from Science Daily Feed - Wed, 07/10/2024 - 10:05am
Researchers unveil a microstructure design guide to enhance the durability of lithium secondary batteries.
Categories: Science

How a simple physics experiment could reveal the “dark dimension”

New Scientist Feed - Wed, 07/10/2024 - 9:50am
Could the universe's missing matter be hiding in a "dark" extra dimension? We now have simple ways to test this outlandish idea - and the existence of extra dimensions more generally
Categories: Science

Academic boycotts against Israel spread

Why Evolution is True Feed - Wed, 07/10/2024 - 9:30am

This new article from the Wall Street Journal describes in some detail the way the world is boycotting Israel since October 7, both because it’s defending itself and because it’s a Jewish state.

Such boycotts aren’t new, of course, as the BDS (Boycott, Divestment, and Sanctions) movement has been in swing since about 2001, but the boycotts, and calls for them, have intensified since the war in Gaza.  I’m most concerned with the call for academic boycotts, in which non-Israeli universities swear that they won’t exchange scholars or knowledge with Israeli universities. Such boycotts violate the free exchange of ideas that is the lifeblood of academia. But there are also material boycotts as well: BDS was, I believe, mainly meant to impede the exchange of goods. The academic part began around 2014, and was very quiet—until recently. And that’s what this article documents:

Click below to read the article, though it’s not archived (pdf available with judicious inquiry). I’ll give some quotes (indented):

Some examples of boycotts or calls for them:

When an ethics committee at Ghent University in Belgium recommended terminating all research collaborations with Israeli institutions in late May, Israeli computational biologist Eran Segal didn’t see it coming.

The sciences had seen little impact from global boycott movements, even months into the war, and Segal’s work had nothing to do with the Israeli military effort. The university’s research collaborations, the Ghent committee noted, include research on autism, Alzheimer’s disease, water purification and sustainable agriculture.

. . . Israelis are finding they are no longer welcome at many European universities, including participating in scientific collaborations. Their participation in cultural institutions and defense trade shows is increasingly becoming taboo.

Ghent University is, of course, where my philosopher colleague Maarten Boudry works. He’s vehemently opposed to such boycotts, and has decried them in Belgian and Dutch magazines and newspapers.

Below is an example of Israel being booted out of international meetings, though this one has little to do with academia:

Lidor Madmoni, chief executive of a small Israeli defense startup, prepared for months for a June international weapons show in Paris. The conference, Eurosatory, would be a rare opportunity for his small staff to expand their business, he said. Then came an email informing him that, because of a French court decision, his company was prohibited from attending.

“We have the obligation to block your access to the exhibition starting tomorrow,” the organizers said on the eve of the event, citing court orders that followed a French defense ministry ban issued in response to Israeli military operations in Rafah, the Gaza city where more than one million people had sought refuge.

The French decisions “shocked the entire community” of Israeli defense technology companies, said Noemie Alliel, managing director in Israel for Starburst Aerospace, an international consulting firm that develops and invests in startups in aerospace and defense. Conference organizers said they had appealed to overturn the court decision and told Israeli companies in an email that they were doing all that they could to enable them to attend.

. . . The Israeli defense-exports sector—flourishing before the war, with a record $13 billion in sales in 2023—got wind in March that it could be a target, when Chile barred Israeli companies from taking part in Latin America’s biggest aerospace fair. The French ban followed in June.

Back to academics (my bolding):

When the war began, new boycotts began to trickle in, mainly from humanities and social-science departments, said Netta Barak-Corren, a law professor who heads an antiboycott task force formed during the war at the Hebrew University in Jerusalem.

The boycotts began to widen around two months ago, spreading to the hard sciences and to the university level—“universitywide movements and more importantly decisions to cut all ties with Israeli universities and Israeli academics,” she said.

More than 20 universities in Europe and Canada have adopted such bans, she said.

O Canada!  And from Europe:

An Israeli student who was preparing to study at the University of Helsinki said she was already looking for housing in Finland—until the school told her in May that it had suspended its exchange agreements with Israeli universities.

The University of Helsinki stopped sending students to Israel after Oct. 7 and decided to suspend exchanges in May to express its concern about the conflict, said Minna Koutaniemi, the head of the school’s international exchange services. The university doesn’t intend to restrict its researchers from collaborating with Israelis, she said.

From the U.S. (this “ban” may be rescinded):

Boycotts are gaining traction across the academic spectrum. Cultural Critique, a journal published by the University of Minnesota Press, told an Israeli sociologist in May that his essay was barred from consideration because, they believed, he was affiliated with an Israeli institution.

The journal told the scholar that it follows BDS guidelines, “which include ‘withdrawing support from Israel’s…cultural and academic institutions’.”

Cultural Critique subsequently apologized for excluding the article on the basis of the scholar’s academic affiliation and amended its website to say that submissions would be evaluated “without regard to the identity and affiliation of the author.” It invited the scholar to resubmit.

Authors participate as well:

. . . some creative artists abroad are cutting themselves off from Israel. Since the start of the war, a few dozen authors, most of them American, have refused to have their books translated into Hebrew and sold in Israel, said Efrat Lev, the foreign-rights director at the Deborah Harris Agency in Israel, a literary agency.

One author who had worked with the agency and wrote a young-adult book focusing on queer acceptance refused to publish a second book in Israel, although a contract had already been signed and a translation to Hebrew was under way, said Lev.

“I felt that it was an important book for Israeli kids who are experiencing similar experiences,” she said. “This broke my heart.”

Better to demonize Israel than to help gay Israeli kids!

Academic boycotts seem to me worthless; indeed, they’re counterproductive because they divide a worldwide academic community and impede the dissemination of knowledge.  The University of Chicago issued this statement when Bob Zimmer was President:

On December 22, 2013, the University of Chicago released the following statement on the subject of academic boycotts:

“The University of Chicago has from its founding held as its highest value the free and open pursuit of inquiry. Faculty and students must be free to pursue their research and education around the world and to form collaborations both inside and outside of the academy, encouraging engagement with the widest spectrum of views. For this reason, we oppose boycotts of academic institutions or scholars in any region of the world, and oppose recent actions by academic societies to boycott Israeli institutions.”

It’s not rocket science!  But people, including academics who should know better, are hell-bent on punishing Israel and, of course, those uppity Jews who defended themselves against Hamas.  As Dorian Abbot also pointed out, such boycotts violate the Mertonian Academic Norms:

Boycotting Israeli academics is an unacceptable violation of the Mertonian Scientific Norm of universalism.https://t.co/o83TlXF1jU

— Dorian Schuyler Abbot (@DorianAbbot) July 10, 2024

You can see those norms here, which were given by sociologist Thomas Merton as “the four norms of good scientific research. . . . These norms are communism, universalism, disinterestedness, and organized skepticism.”  The one Dorian refers to is the second:

  • “universalism: scientific validity is independent of the sociopolitical status/personal attributes of its participants.”

Ergo the status of “being Israeli” has no bearing on whether science should be exchanged or impeded.  Academic boycotts are, to use the argot, stupid.

Categories: Science

A long-standing mystery about breastfeeding may have been solved

New Scientist Feed - Wed, 07/10/2024 - 9:00am
Researchers have discovered a hormone in mice that prevents bone loss during lactation and could one day be used to treat osteoporosis
Categories: Science

The plague may have wiped out most northern Europeans 5000 years ago

New Scientist Feed - Wed, 07/10/2024 - 9:00am
DNA evidence from tombs in Sweden and Denmark suggests major plague outbreaks were responsible for the Neolithic decline in northern Europe
Categories: Science

An unanswered letter to the head of the University of Auckland

Why Evolution is True Feed - Wed, 07/10/2024 - 7:45am

This brouhaha all started in 2021 when seven faculty members at the University of Auckland posted the “The Listener letter on science”, a call to prevent teaching indigenous “ways of knowing” as science.   The letter is archived here and here though the text isn’t online.  If you click to enlarge the screenshot below, you’ll see it’s not all that controversial in itself; but its call that indigenous knowledge  “falls far short of what we can define as science itself” got plenty of Kiwi hackles up.  (The authors are talking about the local indigenous “way of knowing”, Mātauranga Māori (MM), which the government and schools were pushing should be taught in science classes as coequal to modern science.)

The authors were widely demonized, two were investigated by New Zealand’s Royal Society (who insisted at first that MM was indeed science), and several were threatened with academic punishment. As I wrote in my post of Dec. 14, 2021, the Vice-Chancellor of Auckland Uni, who is the head of the institution, also criticized the letter and its arguments:

Earlier this summer, Vice-Chancellor Dawn Freshwater issued a statement explicitly criticizing The Listener letter and its seven signers, making their identities easy to find. Two of her statements from Freshwater’s official announcement of July 26:

A letter in this week’s issue of The Listener magazine from seven of our academic staff on the subject of whether mātauranga Māori can be called science has caused considerable hurt and dismay among our staff, students and alumni.

Note the “hurt and dismay claim”, which at the very outset puts her statement in a context of emotionality rather than reason. And there was more:

While the academics are free to express their views, I want to make it clear that they do not represent the views of the University of Auckland.

The University has deep respect for mātauranga Māori as a distinctive and valuable knowledge system. We believe that mātauranga Māori and Western empirical science are not at odds and do not need to compete. They are complementary and have much to learn from each other.

This view is at the heart of our new strategy and vision, Taumata Teitei, and the Waipapa Toitū framework, and is part of our wider commitment to Te Tiriti and te ao principles.

Now it’s not even clear if the University of Auckland even has an official view about science vs. mātauranga Māori, yet note that Freshwater characterizes the latter as “a distinctive and valuable knowledge system”, maintaining that “mātauranga Māori and Western empirical science are not at odds and do not need to compete.”  That is an arrant falsehood. For one thing, mātauranga Māori is creationist, which puts it squarely at odds with evolution. I won’t go on; you can find for yourself many other ways the two areas are “at odds” with each other.

Freshwater subsequently walked back her opposition after some pushback, and announced twice that year that the University of Auckland would host a series of discussions, debates, and panels on the relationship of local indigenous knowledge to modern science. All of us dealing with this issue from the “modern-science-is-not-equivalent-to-indigenous knowledge” side eagerly awaited this event.

It never happened. That of course is not surprising given that the climate in NZ sacralizes indigenous knowledge, and if you question it as a form of science you can be fired or deplatformed.  But of course I’m not a Kiwi, and I can say what I want. What I’ve wanted to do all these four years is to ask Dr. Freshwater what happened to the debates. So I wrote her this email last week:

Dear Vice-Chancellor Freshwater,

 

I’ve followed for some time the debates in New Zealand about the relationship between modern science and Mātauranga Māori.  Looking at my records,I see that on August 13 and December 14 of 2021, you sent out two notices that the University of Auckland would hold a series of lectures, panels, and debates on this issue.

This is from August 13, 2021:

In recent weeks we have witnessed a widespread public debate on the issue of mātauranga Māori and science. The debate has raised important questions about freedom of expression, respect for opposing views, academic freedom and the role of universities in Aotearoa New Zealand. On Tuesday the NZ Herald published an opinion piece on these issues, which you can read on our News pages here.

 

We will be setting up a series of VC lectures, panels and debating sessions, both within the University and externally, to address this and other topics. Universities like ours have an important thought-leadership role to play on these issues, which we embrace, while recognising that we need to foster an environment within which such debates can take place positively, respectfully and constructively.

And from December 14 of the same year:

I am calling for a return to a more respectful, open-minded, fact-based exchange of views on the relationship between mātauranga Māori and science, and I am committing the University to action on this.

In the first quarter of 2022 we will be holding a symposium in which the different viewpoints on this issue can be discussed and debated calmly, constructively and respectfully. I envisage a high-quality intellectual discourse with representation from all viewpoints: mātauranga Māori, science, the humanities, Pacific knowledge systems and others.

As far as I know, no symposia, discussions, or debates were ever held, though this was nearly three years ago. Was this idea discarded, or did I miss something?

Thanks for your attention.

Cordially, Jerry Coyne Professor Emeritus Dept. Ecology and Evolution The University of Chicago

I have had no reply.  Do you think I will get one? I’m not holding my breath.  I know, because Auckland Uni scours the internet for its mentions (I’ve received stern emails from them demanding corrections of my posts), that they’ll see this, even if Freshwater doesn’t read my email.

The upshot is that there’s never been ANY discussion or debate of this kind in New Zealand, although there have been articles written back and forth, most of them defending the scientific aspect of MM. But rumor has it that there will soon be some significant pushback soon on equating MM with science.

But the University of Auckland, the premier university in New Zealand, has failed abysmally in its promise to encourage free discussion of this important issue. It’s important because resolving whether indigenous knowledge should be taught as science will decide how the country and its students fare in competition with other first-world countries in scientific advances and education.  One of the purposes of a university is to find the truth, but that can’t be done if free discussion is banned.

Categories: Science

Readers’ wildlife photos

Why Evolution is True Feed - Wed, 07/10/2024 - 6:45am

I have about three batches left, so if you have wildlife photos, please send them in.

Today’s photos is the second installment of photos from Texas contributed by Damon Williford (part 1 is here).  Damon’s narrative and captions are indented, and you can enlarge his photos by clicking on them. Here’s his introduction to the set.

I took these photos at Brazos Bend State Park on June 23 of this year. Brazos Bend State Park is located about 45 miles south of central Houston and 45 miles north of Bay City where I live. The park contains a variety of habitats, including prairie, woodlands, marshes, swamps, and lakes. The Brazos River forms the eastern boundary of the park.

Eastern Cottontail (Sylvilagus floridanus):

A juvenile American Alligator (Alligator mississippiensis) hanging out near a footbridge:

Blanchard’s Cricket Frog (Acris blanchardi):

A male Eastern Pondhawk (Erythemis simplicicollis):

A Question Mark Butterfly (Polygonia interrogationis) feeding on a severed crayfish claw. I was aware that some species of butterflies will feed on carrion, but this was the first time I have personally observed it:

Black-eyed Susan (Rudbeckia hirta):

Violet Ruellia (Ruellia nudiflora):

American Lotus (Nelumbo lutea):

American Lotus:

Water Hyacinth (Pontederia crassipes):

Mushrooms in the genus Chlorophyllum (maybe). That is the best I could do with the identification:

I used iNaturalist to help me identify the organisms in photos 14-22 because my ID skills become progressively worse as the list moves from amphibian (average) to plants (poor) to fungi (non-existent).

Camera information: I used a Canon EOS R7 mirrorless camera body for all photographs. I used the Canon RF800mm f/11 IS USM lens for photos 1-8, and the Canon RF100-400mm f/5.6-8 IS USM lens for the remaining photos.

Categories: Science

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