Slashdot

Syndicate content Slashdot
News for nerds, stuff that matters
Updated: 13 min 21 sec ago

Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Ancient Shrimp-Like Creature Has Oldest Known Circulatory System

Tue, 08/04/2014 - 9:07am
sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Read more of this story at Slashdot.








Online Skim Reading Is Taking Over the Human Brain

Tue, 08/04/2014 - 6:59am
Hugh Pickens DOT Com (2995471) writes "Michael S. Rosenwald reports in the Washington Post that, according to cognitive neuroscientists, humans seem to be developing digital brains with new circuits for skimming through the torrent of information online at the expense of traditional deep reading circuitry... Maryanne Wolf, one of the world's foremost experts on the study of reading, was startled last year to discover her brain was apparently adapting, too. After a day of scrolling through the Web and hundreds of e-mails, she sat down one evening to read Hermann Hesse's challenging novel The Glass Bead Game. 'I'm not kidding: I couldn't do it,' says Wolf. 'It was torture getting through the first page. I couldn't force myself to slow down so that I wasn't skimming, picking out key words, organizing my eye movements to generate the most information at the highest speed. I was so disgusted with myself.' The brain was not designed for reading and there are no genes for reading like there are for language or vision. ... Before the Internet, the brain read mostly in linear ways — one page led to the next page, and so on. The Internet is different. With so much information, hyperlinked text, videos alongside words and interactivity everywhere, our brains form shortcuts to deal with it all — scanning, searching for key words, scrolling up and down quickly. This is nonlinear reading, and it has been documented in academic studies. ... Some researchers believe that for many people, this style of reading is beginning to invade our ability to deal with other mediums. 'We're spending so much time touching, pushing, linking, scrolling and jumping through text that when we sit down with a novel, your daily habits of jumping, clicking, linking is just ingrained in you,' says Andrew Dillon."

Read more of this story at Slashdot.








Qualcomm Announces Next-Gen Snapdragon 808 and 810 SoCs

Tue, 08/04/2014 - 4:04am
MojoKid (1002251) writes "Qualcomm has announced two fundamentally new chips today with updated CPU cores as well as Qualcomm's new Adreno 400-class GPU. The Snapdragon 808 and the Snapdragon 810 have been unveiled with a host of new architectural enhancements. The Snapdragon 810 will be the highest-end solution, with a quad-core ARM Cortex-A57 paired alongside four low-power Cortex-A53 cores. The Snapdragon 808 will also use a big.Little design, but the core layouts will be asymmetric — two Cortex-A57's paired with four Cortex-A53's. The Cortex-A57 is, by all accounts, an extremely capable processor — which means a pair of them in a dual-core configuration should be more than capable of driving a high-end smartphone. Both SoC's will use a 20nm radio and a 28nm RF transceiver. That's a major step forward for Qualcomm (most RF today is built on 40nm). RF circuits typically lag behind digital logic by at least one process node. Given that RF currently accounts for some 15% of the total area and 30-40% of the PCB, the benefits of moving to a smaller manufacturing process for the RF circuit are significant." To clarify, the 810 can use a combination of the Cortex-A57 and Cortex-A53 cores so a single task that needs a lot of power won't cause as large of a power jump. All of the chips are 64-bit ARM too.

Read more of this story at Slashdot.








Qualcomm Announces Next-Gen Snapdragon 808 and 810 SoCs

Tue, 08/04/2014 - 4:04am
MojoKid (1002251) writes "Qualcomm has announced two fundamentally new chips today with updated CPU cores as well as Qualcomm's new Adreno 400-class GPU. The Snapdragon 808 and the Snapdragon 810 have been unveiled with a host of new architectural enhancements. The Snapdragon 810 will be the highest-end solution, with a quad-core ARM Cortex-A57 paired alongside four low-power Cortex-A53 cores. The Snapdragon 808 will also use a big.Little design, but the core layouts will be asymmetric — two Cortex-A57's paired with four Cortex-A53's. The Cortex-A57 is, by all accounts, an extremely capable processor — which means a pair of them in a dual-core configuration should be more than capable of driving a high-end smartphone. Both SoC's will use a 20nm radio and a 28nm RF transceiver. That's a major step forward for Qualcomm (most RF today is built on 40nm). RF circuits typically lag behind digital logic by at least one process node. Given that RF currently accounts for some 15% of the total area and 30-40% of the PCB, the benefits of moving to a smaller manufacturing process for the RF circuit are significant." To clarify, the 810 can use a combination of the Cortex-A57 and Cortex-A53 cores so a single task that needs a lot of power won't cause as large of a power jump. All of the chips are 64-bit ARM too.

Read more of this story at Slashdot.








Qualcomm Announces Next-Gen Snapdragon 808 and 810 SoCs

Tue, 08/04/2014 - 4:04am
MojoKid (1002251) writes "Qualcomm has announced two fundamentally new chips today with updated CPU cores as well as Qualcomm's new Adreno 400-class GPU. The Snapdragon 808 and the Snapdragon 810 have been unveiled with a host of new architectural enhancements. The Snapdragon 810 will be the highest-end solution, with a quad-core ARM Cortex-A57 paired alongside four low-power Cortex-A53 cores. The Snapdragon 808 will also use a big.Little design, but the core layouts will be asymmetric — two Cortex-A57's paired with four Cortex-A53's. The Cortex-A57 is, by all accounts, an extremely capable processor — which means a pair of them in a dual-core configuration should be more than capable of driving a high-end smartphone. Both SoC's will use a 20nm radio and a 28nm RF transceiver. That's a major step forward for Qualcomm (most RF today is built on 40nm). RF circuits typically lag behind digital logic by at least one process node. Given that RF currently accounts for some 15% of the total area and 30-40% of the PCB, the benefits of moving to a smaller manufacturing process for the RF circuit are significant." To clarify, the 810 can use a combination of the Cortex-A57 and Cortex-A53 cores so a single task that needs a lot of power won't cause as large of a power jump. All of the chips are 64-bit ARM too.

Read more of this story at Slashdot.








Qualcomm Announces Next-Gen Snapdragon 808 and 810 SoCs

Tue, 08/04/2014 - 4:04am
MojoKid (1002251) writes "Qualcomm has announced two fundamentally new chips today with updated CPU cores as well as Qualcomm's new Adreno 400-class GPU. The Snapdragon 808 and the Snapdragon 810 have been unveiled with a host of new architectural enhancements. The Snapdragon 810 will be the highest-end solution, with a quad-core ARM Cortex-A57 paired alongside four low-power Cortex-A53 cores. The Snapdragon 808 will also use a big.Little design, but the core layouts will be asymmetric — two Cortex-A57's paired with four Cortex-A53's. The Cortex-A57 is, by all accounts, an extremely capable processor — which means a pair of them in a dual-core configuration should be more than capable of driving a high-end smartphone. Both SoC's will use a 20nm radio and a 28nm RF transceiver. That's a major step forward for Qualcomm (most RF today is built on 40nm). RF circuits typically lag behind digital logic by at least one process node. Given that RF currently accounts for some 15% of the total area and 30-40% of the PCB, the benefits of moving to a smaller manufacturing process for the RF circuit are significant." To clarify, the 810 can use a combination of the Cortex-A57 and Cortex-A53 cores so a single task that needs a lot of power won't cause as large of a power jump. All of the chips are 64-bit ARM too.

Read more of this story at Slashdot.








Qualcomm Announces Next-Gen Snapdragon 808 and 810 SoCs

Tue, 08/04/2014 - 4:04am
MojoKid (1002251) writes "Qualcomm has announced two fundamentally new chips today with updated CPU cores as well as Qualcomm's new Adreno 400-class GPU. The Snapdragon 808 and the Snapdragon 810 have been unveiled with a host of new architectural enhancements. The Snapdragon 810 will be the highest-end solution, with a quad-core ARM Cortex-A57 paired alongside four low-power Cortex-A53 cores. The Snapdragon 808 will also use a big.Little design, but the core layouts will be asymmetric — two Cortex-A57's paired with four Cortex-A53's. The Cortex-A57 is, by all accounts, an extremely capable processor — which means a pair of them in a dual-core configuration should be more than capable of driving a high-end smartphone. Both SoC's will use a 20nm radio and a 28nm RF transceiver. That's a major step forward for Qualcomm (most RF today is built on 40nm). RF circuits typically lag behind digital logic by at least one process node. Given that RF currently accounts for some 15% of the total area and 30-40% of the PCB, the benefits of moving to a smaller manufacturing process for the RF circuit are significant." To clarify, the 810 can use a combination of the Cortex-A57 and Cortex-A53 cores so a single task that needs a lot of power won't cause as large of a power jump. All of the chips are 64-bit ARM too.

Read more of this story at Slashdot.