Roger Chen and Rui Max from Harvard Business Review explain how ByteDance became the world's most valuable startup. What's the secret? According to the editors, it's the company's shared-service platform, or SSP, which it uses to power innovation. From the report: Bytedance uses its SSP platform differently from most companies. The company's product teams or units don't control their own operating resources. Instead, many common business, technology, and operating functions (among them HR and legal) are centralized and organized into corresponding teams. The teams are highly specialized, so that the right people can be found and flexibly deployed as needed to each new venture. Cloud and shared operational tools, some of which have been developed in house, allow ByteDance to maintain this seemingly complex organizational setup. Product and related teams still focus on serving customer needs, but they rely on different SSP teams to accelerate development and growth. For example, when ByteDance tasks a new venture team with investigating user needs and market opportunities, the team can go to the user-research specialists at the SSP for data support, saving time on market analysis. In other companies, these tasks are undertaken by the product team, which is rarely best equipped for such information gathering. Subsequently, when a use case has been identified that justifies developing a new app or product feature, the product team is paired with engineers at the SSP level to develop the new product or feature.

In some cases, product teams customize existing technologies that have already been developed by the SSP. Algorithms are a case in point. Product teams at ByteDance work with SSP algorithm engineers to fine-tune their enormously powerful recommendation engines. The SSP has also brought together other important teams: user-growth teams, which help identify and acquire desired users; content teams, which establish partnerships to acquire new content; analytics teams, which help to develop deeper user insights; and sales teams, which drive monetization. As expected, because so many capabilities have been centralized into this large SSP, the actual product teams tend to be small and focused, especially in the exploration stage. Douyin, for example, began with just a handful of employees, and the education team began with just two. Importantly, the relationship between the SSP and market-facing teams is symbiotic and mutually beneficial. It's this virtuous loop of continued discovery and improvement that has enabled ByteDance's success.

Relying on its SSP, ByteDance has developed unique innovation and growth strategies. These strategies have five main characteristics: [broad exploration, rapid iteration, selective focus, maximum-capability cross-pollination, and productizing platform services]. [...] ByteDance's SSP strategy -- accelerate new projects by providing instant access to best in class technology and operations -- has been so successful that one would expect many other companies to have embraced it. Yet few companies have managed to replicate ByteDance's success with the strategy. Why? Because they have not put in the organizational enablers that helped ByteDance overcome fiefdom mindsets, which inhibit collaboration. Three of these organizational enablers are particularly important: [OKR system, explicitly flattened hierarchy, and data-driven culture]. [...]

ByteDance's SSP-based innovation strategy has clearly played a key role in its first decade of explosive growth. It has allowed the company to incubate rapidly and broadly and to scale efficiently, by using centralized but flexibly deployed technical and operational stacks. This strategy has served the company well in part because of the similarity among its various algorithm-driven products. ByteDance is now exploring other product categories and is refining its strategy to be more suitable for its evolving organizational model and processes, but no matter how the company evolves, its SSP-based innovation strategy is sure to play an important role.

An intelligence panel investigating the cause of a spate of mysterious incidents that have struck dozens of US officials across the globe has said that some of the episodes could "plausibly" have been caused by "pulsed electromagnetic energy" emitted by an external source, according to an executive summary of the panel's findings released Wednesday. CNN reports: But the panel stopped short of making a definitive determination, saying only that both electromagnetic energy and, in limited circumstances, ultrasound could explain the key symptoms -- highlighting the degree to which the murky illness known colloquially as "Havana Syndrome" has remained one of the intelligence community's most stubborn mysteries. "We've learned a lot," an intelligence official familiar with the panel's work told reporters, speaking on anonymity under terms set by the Office of the Director of National Intelligence. "While we don't have the specific mechanism for each case, what we do know is if you report quickly and promptly get medical care, most people are getting well."

The scientific panel emphasized that the cases it studied were "genuine and compelling," noting that some incidents have affected multiple people in the same space and clinical samples from a few victims have shown signs of "cellular injury to the nervous system." An executive summary of the panel's work provided new details about how the government is categorizing cases as possible Havana Syndrome, a clinically vague illness that has long frustrated firm diagnosis because victims have suffered from such a diverse array of symptoms. Although officials declined to say how many cases the panel examined as part of its inquiry, they said they studied cases that met four "core characteristics": the acute onset of sounds or pressure, sometimes in only one ear or on one side of the head; simultaneous symptoms of vertigo, loss of balance and ear pain; "a strong sense of locality or directionality"; and the absence of any known environmental or medical conditions that could have caused the other symptoms.

Both pulsed electromagnetic energy, "particularly in the radiofrequency range," and ultrasonic arrays could feasibly cause the four core symptoms, the panel found. Both could originate from "a concealable source." But ultrasound can't travel through walls, the panel found, "restricting its applicability to scenarios in which the source is near the target." Sources of radiofrequency energy, on the other hand, are known to exist, "could generate the required stimulus, are concealable, and have moderate power requirements," the panel said. "Using nonstandard antennas and techniques, the signals could be propagated with low loss through air for tens to hundreds of meters, and with some loss, through most building materials." But intelligence officials familiar with the panel's work emphasized that important information gaps remained, forestalling them from reaching firmer conclusions. The experts panel also ruled out so-called psycho-social factors. They also ruled out "ionizing radiation, chemical and biological agents, infrasound, audible sound, ultrasound propagated over large distances, and bulk heating from electromagnetic energy."

"The panel made seven recommendations, including developing better biomarkers that are 'more specific and more sensitive for diagnosis and triage' of cases," reports CNN. "It also recommended utilizing 'detectors' and obtaining 'devices to aid research.' Finally, officials urged swift action by medical officials whenever a case is reported, emphasizing that individuals who have been treated immediately after an event have improved."

Mark Forkner, Boeing's 737 Max chief technical pilot during the aircraft's development, has been charged with misleading aviation regulators about safety issues blamed for two fatal crashes of the 737 Max. According to the U.S. Department of Justice, "he faces a maximum penalty of 20 years in prison on each count of wire fraud and 10 years in prison on each count of fraud involving aircraft parts in interstate commerce." Slashdot reader McGruber shares an excerpt from the press release: A federal grand jury in the Northern District of Texas returned an indictment charging Mark A. Forkner, former Chief Technical Pilot for The Boeing Company (Boeing), with deceiving the Federal Aviation Administration's Aircraft Evaluation Group (FAA AEG) in connection with the FAA AEG's evaluation of Boeing's 737 MAX airplane, and scheming to defraud Boeing's U.S.based airline customers to obtain tens of millions of dollars for Boeing.

As alleged in the indictment, Forkner provided the agency with materially false, inaccurate, and incomplete information about a new part of the flight controls for the Boeing 737 MAX called the Maneuvering Characteristics Augmentation System (MCAS). Because of his alleged deception, a key document published by the FAA AEG lacked any reference to MCAS. In turn, airplane manuals and pilot-training materials for U.S.-based airlines lacked any reference to MCAS -- and Boeing's U.S.-based airline customers were deprived of important information when making and finalizing their decisions to pay Boeing tens of millions of dollars for 737 MAX airplanes.

On or about Oct. 29, 2018, after the FAA AEG learned that Lion Air Flight 610 -- a 737 MAX -- had crashed near Jakarta, Indonesia, shortly after takeoff and that MCAS was operating in the moments before the crash, the FAA AEG discovered the information about the important change to MCAS that Forkner had withheld. Having discovered this information, the FAA AEG began reviewing and evaluating MCAS. On or about March 10, 2019, while the FAA AEG was still reviewing MCAS, the FAA AEG learned that Ethiopian Airlines Flight 302 -- a 737 MAX -- had crashed near Ejere, Ethiopia, shortly after takeoff and that MCAS was operating in the moments before the crash. Shortly after that crash, all 737 MAX airplanes were grounded in the United States.

The Seattle Times reports: Haunted by the two deadly crashes of Boeing 737 MAX jets and his agency's role in approving the plane, veteran Federal Aviation Administration (FAA) safety engineer Joe Jacobsen is stepping forward publicly to give the victims' families "a firsthand account of what the truth is." In a detailed letter sent last month to a family that lost their daughter in the second MAX crash in Ethiopia two years ago this week, and in interviews with The Seattle Times, Jacobsen gave the first personal account by an insider of the federal safety agency's response to the MAX crashes...

He believes additional system upgrades are needed beyond Boeing's fix for the MAX that was blessed by the FAA and other regulators.

And Jacobsen argues that the plane would be safer if Boeing simply removed altogether the new software — the Maneuvering Characteristics Augmentation System (MCAS) — that went wrong in the two crashes that killed 346 people. Jacobsen also calls for the replacement of some of the people at "the highest levels of FAA management," whom he blames for creating a culture too concerned with fulfilling the demands of industry. In his letter and interview, Jacobsen also described in more depth than previously reported how an autothrottle system issue may have contributed to the crash in Ethiopia in March 2019.

Boeing and the FAA said in separate statements they believe the MAX is fixed and safe, and that regulators worldwide have validated this conclusion...

A week after the Lion Air crash on Oct. 29, 2018, Jacobsen received an email from a colleague asking if there was an issue paper on MCAS. "This was the first day that I heard about MCAS," he wrote. "We had no issue papers, and if we had, I would have been the engineer responsible for providing technical content and comment on such an issue paper." When he did get a look at the system, Jacobsen said he was "shocked to discover that the airplane was purposely designed and certified to use just one AOA (Angle of Attack) input for a flight critical function."

If given the chance during the original certification, he's certain that he and "6 to 8 of our most experienced engineers in the Seattle office" would have identified that as a serious design flaw because there's "a long history of AOA sensor failures."

Instead, Boeing minimized MCAS and kept the details of its assessment to itself...
The article also argues that Boeing itself didn't grasp the danger of its system. "Michael Teal, 737 MAX chief engineer, testified to Congress that he first learned only after the Lion Air crash that MCAS relied on a single sensor.

Cambridge Engineering alumnus Hal Evans has built a fully-functioning replica of a 1930s Polish cyclometer -- an electromechanical cryptologic device that was designed to assist in the decryption of German Enigma ciphertext. The replica currently resides in King's College, Cambridge. TechXplore reports: Work on the hardware-based replica began in 2018, as part of Hal's fourth year Master's project under the supervision of King's College Fellow and Senior Tutor Dr. Tim Flack. The aim was to investigate further into cryptologist Marian Rejewski's cyclometer -- an early forerunner to Cambridge University mathematician Alan Turing's machine, known as the Bombe, which was used to crack the German Enigma code during the Second World War. Hal said he chose to work on the cyclometer as it was the very first machine used to assist the decryption effort. To his knowledge, the replica is the first fully-functioning hardware-based electromechanical cyclometer to exist since the years preceding the Second World War. The original machines would have been destroyed in 1939 to prevent them from falling into the hands of German invaders.

Rejewski's cyclometer exploited the German's procedure at the time of double encipherment of the Enigma message key, and semi-automated the process for calculating what were known as 'characteristics' for every possible Enigma rotor starting position. There were more than 100,000 of these rotor starting positions, and they each needed their characteristic to be calculated and catalogued in a card index system. The cyclometer therefore eliminated the arduous task of calculating these characteristics by hand. The machine consisted of, in effect, two interlinked Enigma systems side-by-side -- one offset by three positions relative to the other -- and 26 lamps and switches to cover the alphabet. On operation, a certain number of bulbs illuminated, indicating the lengths of the characteristics. These were recorded for every single possible rotor starting position to create an immense look-up catalogue. Once this was completed, obtaining the daily Enigma rotor starting settings to decode messages was a simple matter of intercepting enough messages and referencing the catalogue, taking only a matter of minutes.

A reader shares a report from SciTechDaily: MIT mathematicians and engineers have developed a mathematical model that predicts how stable a knot is, based on several key properties, including the number of crossings involved and the direction in which the rope segments twist as the knot is pulled tight. "These subtle differences between knots critically determine whether a knot is strong or not," says Jorn Dunkel, associate professor of mathematics at MIT. "With this model, you should be able to look at two knots that are almost identical, and be able to say which is the better one." "Empirical knowledge refined over centuries has crystallized out what the best knots are," adds Mathias Kolle, the Rockwell International Career Development Associate Professor at MIT. "And now the model shows why."
[...]
In comparing the diagrams of knots of various strengths, the researchers were able to identify general "counting rules," or characteristics that determine a knot's stability. Basically, a knot is stronger if it has more strand crossings, as well as more "twist fluctuations" -- changes in the direction of rotation from one strand segment to another. For instance, if a fiber segment is rotated to the left at one crossing and rotated to the right at a neighboring crossing as a knot is pulled tight, this creates a twist fluctuation and thus opposing friction, which adds stability to a knot. If, however, the segment is rotated in the same direction at two neighboring crossing, there is no twist fluctuation, and the strand is more likely to rotate and slip, producing a weaker knot. They also found that a knot can be made stronger if it has more "circulations," which they define as a region in a knot where two parallel strands loop against each other in opposite directions, like a circular flow.

By taking into account these simple counting rules, the team was able to explain why a reef knot, for instance, is stronger than a granny knot. While the two are almost identical, the reef knot has a higher number of twist fluctuations, making it a more stable configuration. Likewise, the zeppelin knot, because of its slightly higher circulations and twist fluctuations, is stronger, though possibly harder to untie, than the Alpine butterfly -- a knot that is commonly used in climbing. The findings have been published in the journal Science.

A recent TechCrunch article claimed to have identified the best indicator of programming language popularity: GitHub's annual "State of the Octoverse" reports. So Austin-based technology reporter Mike Melanson explored the new verdict in GitHub's 2018 report: It felt to me like the overarching theme of the numbers was one of quiet stasis for the year past, at least when it comes to those languages deemed the cream of the crop. One of the first graphics offered in the post shows the top languages according to the number of repositories created and we see that everything seems to be flowing along, just as it has for the last decade. While GitHub points to a "steady uptick" for JavaScript after 2011, it looks like this list of languages hasn't changed much over time. [The graphic shows the four most popular languages -- every year since early 2014 -- have been JavaScript, Java, Python, and PHP.]

When we look at the top languages according to the number of contributors, we see a similar story, with the top four languages mirrored. In this chart, of course, we see that Ruby is on a steady decline, while Typescript is on a steady rise. The only surprise to be seen here is that C, after a brief uptick in popularity, has taken a bit of a nosedive over the past year. Either way, seven of 10 languages have the same exact ranking....

Finally, beyond the language rankings themselves, GitHub offers a wonderful analysis of just what it is that makes a particular language popular in 2018, boiling it down to three key characteristics: thread safety, interoperability, and being open source.
GitHub's report also identifies its fastest growing languages over the last year -- including Kotin, TypeScript, Rust, Python, and Go. "This year, TypeScript shot up to #7 among top languages used on the platform overall, after making its way in the top 10 for the first time last year," the report notes.

"TypeScript is now in the top 10 most used languages across all regions GitHub contributors come from -- and across private, public, and open source repositories."

Recently the founder of the Mars Settlement Research Organization and author of The International Mars Research Station Shaun Moss agreed to sit down and answer any questions you had about space exploration and colonizing Mars. Below you will find his answers to your questions.

A couple of weeks ago you had a chance to ask former Vice President of One Laptop per Child, and current Senior Director of the Global Learning XPRIZE Matt Keller about education and the competition. The XPRIZE challenges teams from around the world to develop open source software that will allow children in developing countries to teach themselves basic reading, writing and arithmetic with a Grand Prize of $10 million. Below you will find his answers to your questions.

A while ago you had the chance to ask amateur scientist, and author of the Getting Started in Electronics and the Engineer's Mini-Notebook series, Forrest Mims, a number of questions about science, engineering, and a lifetime of educating and experimenting. Below you'll find his detailed answers to those questions.

crookedvulture writes "Slashdot has already covered the four main flavors of Cherry MX mechanical key switches: red, black, blue, and brown. Now, there's a green MX variant that emulates the feel of the buckling spring switches in old-school IBM Model M keyboards. The green switches combine tactile feedback, an audible click, and a stiff spring that requires 80g of actuation force. They're a stiffer version of the MX blues that more closely matches the characteristics of IBM's buckling spring design. Previously reserved for use with space bars, the green switches have now taken over an entire Cooler Master keyboard. And, unlike the old Model M and contemporary copycats, the new CM Storm Trigger has modern conveniences like an integrated USB hub, LED backlighting, and programmable macros." I've had my hopes raised and then dashed by some other keyboards whose makers promised Model M feel, so I'll believe it when I feel and hear it.

Gunkerty Jeb writes "Researchers working on the 'physically unclonable functions found in standard PC components (PUFFIN) project' announced last week that widely used graphics processors could be the next step in online authentication. The project seeks to find uniquely identifiable characteristics of hardware in common computers, mobile devices, laptops and consumer electronics. The researchers realized that apparently identical graphics processors are actually different in subtle, unforgeable ways. A piece of software developed by the researchers is capable of discerning these fine differences. The order of magnitude of these differences is so minute, in fact, that manufacturing equipment is incapable of manipulating or replicating them. Thus, the fine-grained manufacturing differences can act as a sort of a key to reliably distinguish each of the processors from one another. The implication of this discovery is that such differences can be used as physically unclonable features to securely link the graphics cards, and by extension, the computers in which they reside and the persons using them, to specific online accounts."

Jon Brodkin writes "Few game series other than Final Fantasy have consistently provided epic adventures for 25 years—and perhaps no company outside of Nintendo capitalizes on its history like Square Enix. In its latest attempt to merge the best of past and present into one experience, Square Enix has produced the music game Theatrhythm Final Fantasy for the Nintendo 3DS. Joining Guitar Hero-style mechanics, 3D perspective, RPG-like character building and battling, and the rich music catalog of the Final Fantasy franchise, Theatrhythm is impressive, enjoyable, and one of the best examples of why it's worth owning a 3DS and that wacky stylus." Read below for the rest of Jon's review.

DeviceGuru writes "It's looking like 2012 will be a watershed year for cord-cutters wanting to replace expensive cable TV services with low-cost gadgets that stream movies and TV shows from the Internet via free, subscription, and pay-per-view services. Accordingly, this DeviceGuru smackdown pits five popular streaming media player devices against each other. The smackdown compares Roku, Google TV, Apple TV, the Boxee Box, and Netgear's NeoTV, tabulating their key features, functions, specs, supported multimedia formats, and other characteristics, and listing the main advantages and disadvantages of each device. Then, it provides a summary chart that attempts to quantify the whole thing, so you (theoretically) can pick the best one based on what characteristics are most important to you. Of course, the market's evolving so quickly that the entire process will need to be redone in 6 months, but what else is new."

snydeq writes "Canonical CEO Jane Silber discusses the Ubuntu maker's ambitions in the mobile market, saying there is plenty of room for a new player in tablets, TVs, and maybe even smartphones. 'There is a real demand for an alternative platform. We believe Ubuntu has all the characteristics that are needed to become that platform,' Silber says, adding that she expects to see Ubuntu on tablets later this year. 'And we think we can do that effectively because of characteristics of Ubuntu as a platform, industry dynamics, and an increased wariness around the walled gardens of Apple and to some extent Google and even Amazon, as they are increasingly in this game as well.' Silber cites openness, open governance, collaboration, and a strong developer ecosystem as key for Ubuntu as a tablet platform, when compared with Android and iOS."

MojoKid writes "NVIDIA just announced their next generation of 3D Vision technology that claims to deliver greater realism and immersion for 3D games, movies and photos. 3D Vision 2 is very similar to NVIDIA's original 3D Vision. The technology is backwards compatible with NVIDIA's first gen 3D emitter technology. However, NVIDIA has made a number of physical and technical tweaks that enhance the technology in a few key ways. NVIDIA's active-shutter glasses have been redesigned with 20% larger lenses and the company has worked with partners to bring new, larger, full-HD 3D Vision compatible monitors to market. NVIDIA has also developed a new technology dubbed LightBoost that ultimately results in brighter on-screen imagery and better environmental lighting characteristics in 3D content as well."

KuanH writes "Amazon SimpleDB Developer Guide is billed as a complete guide to using Amazon's SimpleDB database API. It's most detailed for PHP. It's helpful for Python. But the Java code and explanations aren't up to the standard of the others. It includes a primer on using Amazon S3 with SimpleDB: files stored on S3, file metadata stored in SimpleDB — again, less good for Java. It also covers tuning to reduce usage costs, caching using memcached, and ways to batch-update and make serial or parallel requests to SimpleDB. However, it's missing some information that beginners might need, and it's perhaps not quite advanced enough for the more experienced. Downloadable example code is available only for PHP." Keep reading for the rest of Kuan's review.

RickJWagner writes "Manning has just released a new Erlang title, called Erlang and OTP in Action. For quite some time now, there's been a definitive guide to Erlang-- Joe Armstrong's excellent book Programming Erlang. Well, it's time to make a little extra room on the bookshelf, because the Erlang book-o-sphere has just shifted. There are now two must-have resources for an Erlang programmer." Keep reading for the rest of Rick's review.

Michael J. Ross writes "Of all the online resources devoted to assisting Web designers and developers, Smashing Magazine is one of the most highly regarded, primarily because of the depth and consistent quality of the articles that appear on its website. This apparently motivated many of its readers to encourage the magazine's editors to develop and release a book on Web design, which the company did in 2009, appropriately titled The Smashing Book." Read below for Michael's review.

Michael J. Ross writes "Of the leading content management systems used by developers for creating websites, Drupal is highly regarded for many characteristics, including a much smaller initial footprint, compared to Joomla and other CMSs. Yet some developers find this a disadvantage as well, because one of the most common criticisms leveled against Drupal is its lack of built-in support for images and multimedia elements — thereby forcing new Drupal developers to choose from the thousands of contributed Drupal modules those that would be optimal for implementing their websites' multimedia functionality. Aaron Winborn's book Drupal Multimedia is intended as a guide to help such developers." Keep reading for the rest of Michael's review.