There are many examples of a man-made nightmare created by man in the world. What is more amusing, the current example is revered today as an example of avaricious northern beauty, although a thousand years ago it could have claimed the status of “northern paradise”. What is this example?
Iceland before the settlement of the first people was, for a minute, for a THIRD occupied by the forest. Yes, this forest consisted of Icelandic birch, not the best tree. But he was, and the first settlers-Scandinavians, who arrived in the midst of the climatic optimum, liked the island hefty.
A lot of free land, optimum + Gulf Stream - it's not too hot outside, of course, but not too cold. Forests, fresh water ...
The "extra" forests were the first to go for firewood - after all, the sheep need to be grazed somewhere. When firewood was not needed, the forest was simply burned. Then they began to cut down for the sake of wood, since the fin forest did not provide the island for it, and it was expensive to transport logs from the continent.
The 7-Zip archiver does an excellent job of compressing data efficiently. It can be called a "Swiss knife" in the world of archivers. It supports various compression algorithms and a wide variety of data formats such as ZIP, gzip, tar and RAR. A separate plus is that the archiver is free.
The first version of 7-Zip was released on July 18, 1999; in a relatively short time, the archiver could become very popular. A relative disadvantage of 7-Zip is that there is only a version for Windows (official client). But now, after only 22 years, there is also a version for Linux, an official build from the developers.
This story began when I learned about existence bpytop ... I was amazed at the detail of the charts and I began to figure out how it was done. It turned out that Braille characters were used to display the graphs, which are a combination of 8 points: 2 points in width and 4 points in height. After looking for ready-made solutions using this approach, I found on reddit announcement such the project ... In the very first comment of the announcement, I read:
It's cool, but why don't people just rediscover ReGIS (vector graphics in the terminal) and sixel (pixel graphics in the terminal).Until this moment, I did not know anything about sixel. Digging deeper, I found out that in theory sixel should be supported by xterm. I ran xterm on my ubuntu 20.04 in vt340 emulation mode
xterm -xrm "XTerm*decTerminalID: vt340" -xrm "XTerm*numColorRegisters: 256"executed the following command (convert is a command from the imagemagick package)
clear && convert <(curl -s https://upload.wikimedia.org/wikipedia/en/7/7d/Lenna_%28test_image%29.png) sixel:-and saw this:
Wow, it works!
Google said that community, bringing people together is at the core of their corporate culture and office spirit, so they are investing $ 7 billion in an existing office, as well as opening offices in Minnesota, Texas (the highest priority point for technological growth in recent years) and North Carolina. Also Google plans to double office expenses. This decision seems significant and even somewhat surprising against the backdrop of the triumphant march of the distance, which the companies became closely acquainted with in the "covid" 2020.
In a pandemic year, Google, like everyone else, slowed down recruitment, but now is the time to pick up steam. The company said it will add thousands of new employees at existing sites in Atlanta, Washington, DC, Chicago and New York, expanding the company's multi-year expansion beyond Silicon Valley. According to Alphabet, there were over 135,000 Google employees worldwide as of last year.
New GKE mode is more expensive and less flexible, but easier and safer
Autopilot in GKE manages pods for you
Two things are well known about Kubernetes clusters. The first is that it is absolutely the best tool for the mission-critical task of container orchestration. And second, its complexity is a barrier to implementation and a common cause of errors. Even Google, the inventor and main promoter of Kubernetes, admits it.
To simplify the deployment and management of clusters, the company provided all GKE customers with access to the service. Autopilot which google already has been using Borg in its own clusters for a long time ... It is automatic resource configuration based on machine learning.
Crystal structure of S. aureus Cas9 in complex with crRNA and its target DNA
In past posts, you asked tell in more detail about CRISPR / Cas9 and approaches to genome editing. I just did not include such a voluminous material in the last post. And in this I will not include, for example, the TALEN method, which can potentially be more accurate and has its advantages. But darling, yes.
Let's try to walk through the already well-described method of genetic modification using CRISPR-Cas9 and look a little more broadly at the prospects that it opens up for us. I was wildly interested in the direction of xenogeneic transplantation from pigs to humans. The first, "pre-correction" methods showed that such a pig transplant is killed by the body within a few minutes ... But the method was not discarded at all. Still, this is a promising way not to wait until the next potential organ donor dies, but to grow them in advance. Then it turned out that pigs also carry a pack of specific retroviruses that are built into their genome and can cause an epidemic of a new xenozoonosis. And viruses, too, must somehow be picked out before transplantation. And somewhere here people in white coats appear on the stage, doing something incomprehensible in their laboratories ...
In the early 1960s, the world was dominated by Fortran (IBM's John Backus) for scientific and Cobol (IBM's Jean Summet and Department of Defense) for commercial use. Programs were written on paper, then perforated on cards, after which the results of their execution were waited for the whole day. Programming languages were considered important assistants and accelerators of the programming process.
In 1960, an international committee published the Algol 601 language specification. For the first time, a language was defined by well-defined constructs and a precise, formal syntax. Two years later, it became clear that some fixes and improvements were required. However, the main task was to expand the range of applications, since ALGOL 60 was intended only for scientific computing (computational mathematics). To work on this project, a Working Group (WG 2.1) was assembled under the auspices of the International Federation for Information Processing (IFIP).
“What's wrong with the computer - it has an nvme drive installed, but opening the explorer, if you haven't done it for a long time, takes about 10 seconds, opening the .zip file on the desktop takes about a minute, and when you press the“ Start ”key, you need to wait about 20 seconds? "
Around the end of January, I was shown a Twitter post in which a Windows user with a powerful machine talks about random freezes in Explorer. Many unscientific theories have been proposed. I don’t usually do the analysis of performance problems with strangers, but this case seemed interesting, so I decided to study it.
Puzzle loverGerald Selby has always loved riddles: where others saw only noise, he strove to find order and harmony. While working at Kellogg's Oatmeal Factory, he analyzed materials to increase shelf life. One day, while studying cereal from other companies, Jerry came across a strange sequence of characters on the back of a General Mills box. Instead of a date and a manufacturing factory, a mysterious code was printed there. Jerry decided to decipher it: taking several boxes of Kellogg's and General Mills breakfasts, he began to compare their moisture content, realizing that cereals with approximately the same moisture content should have close production dates. By making notes on paper, he identified some patterns. Soon he was able to decipher everything that made it possible to determine the place, date and time of manufacture. In a more aggressive line of business, “hacking” competitors' secrets could have been a huge benefit, but not in the production of oatmeal, so management was not enthusiastic about its discovery.
Everyone is discussing an insanely beautiful story about how the guys from Reddit were able to defeat arrogant hedge funds, but not everyone understands what exactly happened in the markets. In this article, I explain in simple terms what exactly led to the current situation.