Published on: 2025-04-21 02:00:00
These indirect systems rely on a combination of field sampling—foresters roaming among the trees to measure their height and diameter—and remote sensing technologies like lidar scanners, which can be flown over the forests on airplanes or drones and used to measure treetop height along lines of flight. This approach has worked well in North America and Europe, which have well-established forest management systems in place. “People know every tree there, take lots of measurements,” Scipal says.
Keywords: band like radar space trees
Find related items on AmazonPublished on: 2025-04-30 04:15:08
For trees, lightning strikes are the great leveller. Stick your neck out by growing taller than the rest, and you risk getting zapped into oblivion. Hundreds of millions of trees suffer this fate every year. But the opposite appears to be the case for the towering tonka bean tree (Dipteryx oleifera), a native of the rainforests of Panama that grows up to 130 feet tall and lives for hundreds of years. Lightning is a weapon in its arsenal, and it wields it masterfully. When an opportune lightnin
Keywords: lightning researchers tonka tree trees
Find related items on AmazonPublished on: 2025-04-30 03:15:26
Now well into his second term, it's no secret that Donald Trump wields his emergency powers like Elon Musk uses slurs. That is to say, he does it a lot. So far, Trump's declared national emergencies to classify drug smugglers as terrorists, the migrant crisis as an invasion, and the International Criminal Court's arrest warrant for Benjamin Netanyahu as infringing "upon the sovereignty of the United States" — not to mention skirting around some annoying procedures which would have delayed his n
Keywords: emergency national nepa trees trump
Find related items on AmazonPublished on: 2025-05-10 09:37:57
Twenty years ago today, Linus Torvalds made the very first commit to Git, the information manager from hell. Over these last 20 years, Git went from a small, simple, personal project to the most massively dominant version control system ever built. I have personally had a hell of a ride on this particular software roller coaster. I started using Git for something you might not imagine it was intended for, only a few months after it’s first commit. I then went on to found GitHub, write arguabl
Keywords: commit git linus tree version
Find related items on AmazonPublished on: 2025-05-19 16:46:45
Unitree G1, a humanoid robot, made its stunning debut at Shanghai Fashion Week, walking the runway alongside human models. On March 26, Unitree Robotics’ humanoid robot Unitree G1 made a striking debut at the Xintiandi catwalk during Shanghai Fashion Week. Sharing the runway with human models, G1 brought a bold, futuristic twist to the fashion world, offering a new perspective on human-machine interaction. Walk Confidently Down the Runway Launched in May 2024 with a starting price of 99,000 y
Keywords: fashion g1 human robot unitree
Find related items on AmazonPublished on: 2025-05-22 23:30:22
blue95 A desktop for your childhood home's computer room. Blue95 is a modern and lightweight desktop experience that is reminiscent of a bygone era of computing. Based on Fedora Atomic Xfce with the Chicago95 theme. For more screenshots, see screenshots.md. Try It Out Note Live CD is a new feature and is still in testing. We are now creating a Live ISO that can be used to boot into a Blue95 live environment. Test it out without needing to install anything. Note that the included installer
Keywords: blue95 image latest ostree rebase
Find related items on AmazonPublished on: 2025-05-22 19:00:00
In the late 2000s, McKenzie and the pioneering complexity theorist Stephen Cook devised a problem that seemed like a promising candidate. Called the tree evaluation problem, it involves repeatedly solving a simpler math problem that turns a pair of input numbers into a single output. Copies of this math problem are arranged in layers like the matches in a tournament bracket: The outputs of each layer become the inputs to the next layer until there’s just one output remaining. Different tree eval
Keywords: cook evaluation memory problem tree
Find related items on AmazonPublished on: 2025-05-22 16:00:19
If you’re stuck outside in the middle of a lightning storm, the most common advice is to stay away from trees, which might attract lightning. And while getting struck by lightning would certainly be very bad news for you, new research suggests certain trees might draw unexpected benefits from the electrocution. A team of researchers has revealed that Dipteryx oleifera—a tall tropical tree with a large crown and native to Colombia, Costa Rica, Nicaragua, and Panama—not only tolerates lightning s
Keywords: lightning oleifera struck tree trees
Find related items on AmazonPublished on: 2025-05-24 15:52:58
Getting zapped with millions of volts of electricity may not sound like a healthy activity, but for some trees, it is. A new study, published in New Phytologist, reports that some tropical tree species are not only able to tolerate lightning strikes, but benefit from them. The trees may have even evolved to act as lightning rods. The research was led by Evan Gora, a forest ecologist at Cary Institute of Ecosystem Studies. Gora studies how lightning impacts biodiversity and carbon storage in Pan
Keywords: lightning oleifera struck tree trees
Find related items on AmazonPublished on: 2025-05-29 07:33:16
“Our results demonstrate that the above-ground and below-ground parts of a tree follow separate calendars, allowing for underground growth to be prioritized in winter and aerial growth at the beginning of spring,” says CREAF researcher Paolo Zuccarini, a co-author of the study. This divergence could offer a strategic advantage: in winter, while the rest of the tree is dormant, its roots store reserves of carbohydrates and nitrogen-rich substances, such as proteins and amino acids. Thus, when the
Keywords: ground growth photosynthesis roots tree
Find related items on AmazonPublished on: 2025-06-02 19:42:10
Mozilla.ai developed and released the OpenStreetMap AI Helper Blueprint. If you love maps and are interested in training your own computer vision model, you’ll enjoy diving into this Blueprint. Motivation At Mozilla.ai, we believe that there are a lot of opportunities where artificial intelligence (AI) can empower communities driven by open collaboration. These opportunities need to be designed carefully, though, as many members of these communities (and people in general) are increasingly wo
Keywords: ai map model models openstreetmap
Find related items on AmazonPublished on: 2025-06-03 21:33:54
Game of Trees 0.110 released February 20, 2025 Game of Trees -portable 0.110 released March 21, 2025 Game of Trees (Got) is a version control system which prioritizes ease of use and simplicity over flexibility. Got is still under development; it is being developed on OpenBSD and its main target audience are OpenBSD developers. Got uses Git repositories to store versioned data. Git can be used for any functionality which has not yet been implemented in Got. It will always remain possible to
Keywords: game git got openbsd trees
Find related items on AmazonPublished on: 2025-06-12 11:55:38
World's tallest tree Hyperion is a coast redwood (Sequoia sempervirens) in California that is the world's tallest known living tree, measured at 116.07 metres (380.8 ft) tall in 2019.[1][3] Hyperion was discovered on August 25, 2006, by naturalists Chris Atkins and Michael Taylor.[4] The tree height of 115.55 m (379.1 ft) was verified by Stephen Sillett in 2006 using both a laser range finder and a fiberglass tape to measure the tree from the base to the crown.[5][6] The tree has grown since t
Keywords: ft hyperion park redwood tree
Find related items on AmazonPublished on: 2025-06-18 22:31:47
My teen years: The transputer operating system In my previous article I talked about how I managed to create a self-contained operating system for transputer. This included the basic operating system, a text editor, a Small-C compiler, and an assembler. The year was 1995, I was age 16, Lemon Tree and Zombie were being played in the radio, ARPANET closed around 1990, and it started to be known as Internet, and in Mexico only a handful of people used it through Compuserve Mexico. I wasn't so luc
Keywords: code disk file transputer tree
Find related items on AmazonPublished on: 2025-06-20 05:00:31
The Star Trek replica drink receptacle arms race is heating up faster than a phaser set to “whatever the hell was necessary at the end of ‘Conspiracy’.” Late last year, we got news that, after almost a decade of hiatus, an official recreation of the glass cup Picard famously drank tea from across The Next Generation would be making it back to shelves. Now, for the coffee drinkers, there’s an alternative: this wonderful take on the funky mugs DS9‘s Replimat offered for the far superior drink of c
Keywords: cherrytree cup fans mug mugs
Find related items on AmazonPublished on: 2025-06-20 10:00:31
The Star Trek replica drink receptacle arms race is heating up faster than a phaser set to “whatever the hell was necessary at the end of ‘Conspiracy’.” Late last year, we got news that, after almost a decade of hiatus, an official recreation of the glass cup Picard famously drank tea from across The Next Generation would be making it back to shelves. Now, for the coffee drinkers, there’s an alternative: this wonderful take on the funky mugs DS9‘s Replimat offered for the far superior drink of c
Keywords: cherrytree cup fans mug mugs
Find related items on AmazonPublished on: 2025-06-20 16:36:50
Credits Matthew Ponsford is a London-based writer and researcher. Even in early summer, when Sherwood Forest is thick with lime-colored new leaves, you start to see it from a few hundred paces away. Its trunk is 36 feet around and its canopy stretches for almost three bus-lengths. Its broad, bowl-shaped crown is propped up by a ring of metal columns, like walking sticks measured to fit each of its groaning boughs. The Major Oak, as it’s called, is surrounded by a fence that keeps its many visit
Keywords: forest harris like tree trees
Find related items on AmazonPublished on: 2025-06-25 23:00:00
A Queens-based bike courier who goes by the mononym of Quentin echoes Berlanga’s sentiment, noting how New York’s streets suddenly feel more spacious than ever. “These just a lot more elbow room now,” Quentin says, admitting that part of him misses the traffic, as the gridlock often made his job more exciting. “The Avenues, especially through Midtown, just seem wide open, and you can tell there are so many less cars on the road.” But it’s not only couriers enjoying the City’s less trafficked s
Keywords: bicycle bike city dutch streets
Find related items on AmazonPublished on: 2025-06-27 00:23:28
To B or not to B: B-Trees with Optimistic Lock Coupling B-Trees are one of the few specialized data structures which truly stood the test of time, being over 50 years old. They were invented in year zero of unix time, on a system with a whopping 7.25MB of disk storage — Not DRAM! They are only one month younger than the idea of relational databases itself and witnessed the birth of multi-core architectures, complex cache hierarchies, fast network attached storage and many more groundbreaking ch
Keywords: data lock node root tree
Find related items on AmazonPublished on: 2025-06-29 16:09:00
There's a reason that the suburbs of Phoenix, Arizona, were home to many autonomous vehicle programs: Driving on wide streets in great weather is easy mode for an AV. But a commercial robotaxi service that only works when the sun is shining is a commercial robotaxi service that will never recoup the billions it would cost to develop. That's why Moia—Volkswagen's AV division—has begun testing its autonomous ID Buzzes around the streets of Oslo, Norway, this winter. For a while, autonomous drivin
Keywords: aurora autonomous av commercial streets
Find related items on AmazonPublished on: 2025-07-07 18:17:29
Thursday, February 27, 2025 A few years ago I blogged about custom tree-sitter-based syntax highlighting in emacs. I started out with highlighting certain keywords in red. I wanted to show the keywords that interrupt control flow: Screenshot showing syntax highlighting of keywords in black or red I highlight regular keywords ( while , if ) in bold. I highlight control flow interrupting keywords ( return , continue ) in red. That's syntax highlighting. But I also wanted to highlight names ba
Keywords: font highlight keyword python treesit
Find related items on AmazonPublished on: 2025-07-08 19:04:13
Chinese robotics company Unitree has shown off its G1 humanoid robot pulling some gnarly kung fu moves. In a video released this week, the child-sized robot can be seen punching the air and even deliver a swooping roundhouse kick. "We have continued to upgrade the Unitree G1's algorithm, enabling it to learn and perform virtually any movement," the company wrote in the video's caption. "What other moves would you like to see. Do share with us in the comments." "Please keep a safe distance fro
Keywords: company g1 robot unitree video
Find related items on AmazonPublished on: 2025-07-09 12:12:26
Hey HN! We’re Jai and Sanket, co-founders of DeepSource (YC W20). We're open-sourcing Globstar ( https://github.com/DeepSourceCorp/globstar ), a static analysis toolkit that lets you easily write and run custom code quality and security checkers in YAML [1] or Go [2]. After 5+ years of building AST-based static analyzers that process millions of lines of code daily at DeepSource, we kept hearing a common request from customers: "How do we write custom checks specific to our codebase?" AppSec an
Keywords: checkers code globstar sitter tree
Find related items on AmazonPublished on: 2025-07-09 12:01:43
A while back my machine was so messed up that I could barely ssh onto it. 3,200% CPU utilization - all 32 cores on the host were fully utilized! Compare that to my last bug where it only used 1 core, 100% Fortunately, it was using Java 17 runtime which had thread dumps with CPU time! Sorting by CPU time brought a bunch of threads that looked similar to this: "Thread-0" #22 [14700] prio=5 os_prio=0 cpu=10359.38ms elapsed=11.49s tid=0x000001cdc35aaf60 nid=14700 runnable [0x00000047cfffe000] java
Keywords: base java reproduce thread treemap
Find related items on AmazonPublished on: 2025-07-14 12:00:01
A PayPal sign is seen at its headquarters in San Jose, California, on Jan. 30, 2024. For Frank Keller, it's a pivotal moment at PayPal . After two years, two CEOs and endless brand strategy meetings, the company is, in his view, ready to redefine the world of business payments. With the launch this week of PayPal Open, Keller, who is executive vice president for the enterprise merchant group, and his team are consolidating many of the company's offerings — Braintree, Zettle, Hyperwallet, Charg
Keywords: braintree business keller open paypal
Find related items on AmazonPublished on: 2025-07-12 03:06:05
Our scene representation is a hybrid of primitive and volumetric model. (a) Primitive component. We explicitly allocate voxels primitives to cover different scene level-of-details under an Octree layout. Note that we do not replicate a traditional Octree data structure with parent-child pointers or linear Octree. We only keep voxels at the Octree leaf nodes without any ancestor nodes. (b) Volumetric component. Inside a voxel is a volumetric (trilinear) density field and a (constant) spherical ha
Keywords: octree primitive volumetric voxel voxels
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