Links to download the wedo 2.0 software can be found on lego education downloads. Source: Īll you need is a computer, an internet connection, and a robotics set (lego wedo 1.0, or wedo 2.0, or lego mindstorms nxt, or ev3). Laptop or tablet) the box with bricks opens from the top. Additional curriculum materials are also available from lego education. To open scratch, you just need to type into your browser … Curriculum support that is targeted to science and computing is available from within software. Wedo (1.0 and 2.0) can also be programmed using scratch. It is used to control the wedo motors and sensors (and your computer’s built in sound sensor) as well as enabling the user to add sounds, backgrounds and text. Kids will build with gears, motors and sensors. They are the 12 original designs for the the wedo kit. Curriculum support that is targeted to science and computing is available from within software. Source: Wedo 1.0 (9580) original lego wedo core set Additional curriculum materials are also available from lego education. One kit can be used to teach up to two children. A video projector may be used to support your lesson, but it's not required. Lego education wedo 2.0 kit Laptop or tablet) the box with bricks opens from the top. Lego education wedo 2.0 kit Lego wedo 1.0 camps combine building and programming techniques for the younger level kids. ![]() Wedo 1.0 (9580) original lego wedo core set Free shipping on orders over $300 now for home learning. Free shipping on orders over $300 now for home learning. Wedo 1.0 (9580) original lego wedo core set Build and program lions that roar, monkeys that drum, tops that spin, birds that chirp, alligators that snap and much more! Rube goldberg goes digital with scratch. From lesson plans to software downloads, solution support to technical advice, find everything you need to bring lego® education solutions into your classroom. Wedo 1.0 (9580) original lego wedo core set Prepare scratch for programming lego wedo¶ to program wedo in scratch you essentially need 3 things: It is used to control the wedo motors and sensors (and your computer’s built in sound sensor) as well as enabling the user to add sounds, backgrounds and text. ![]() Series designed for keen young engineers of the future, who want to learn about technologies and solutions that help us improve everyday life in a modern city. Lego robotics wedo building instructions from Prepare scratch for programming lego wedo¶ to program wedo in scratch you essentially need 3 things:
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![]() Once we’ve cleaned out the spam scripts, we find out which web application vulnerability was used for the attack, and patch the application to prevent further infections.Įmail login compromises are comparatively easy to find. We look at the upload time, and code of these scripts to determine if they are spam scripts, and if yes, we delete them from the server. Here at Bobcares, we systematically analyze server event logs to locate the spam source.įirst we find out from the mail logs when the spamming started, and then we check the web logs to find our all script activations at that time. These scripts listen for commands from a remote “bot master” and send spam based on these commands. Someone stole the login details to an email account, and is sending out spam through that account.Īttackers exploit web application vulnerabilities to upload spam scripts or bots.Someone was able to exploit a web application vulnerability and upload a spam script.You can check if your mail IP is blacklisted by performing a search here : ![]() If your mail server IP is listed in a DNS blacklist (DNSBL), a majority of your emails will bounce – especially from large providers such as Google, Hotmail, etc. Generally we’ve seen as a reliable blacklist which weeds out only actual spammers and is well maintained. If we see all mails rejected by a single DNSBL, we remove it from the referral list. So, when we notice a sudden dip in mail volume (compared to the same hour in previous days), we analyze the mail logs and review recent changes to the mail server settings. Here at Bobcares, we monitor the incoming & outgoing mail traffic volume, and we investigate any spike or sudden drop in mails. Such discontinued services mark all incoming mails as spam to force customers to stop using it. we’ve seen servers that used discontinued DNSBLs such as ORDB, Virbl, etc. The most common reason for this error is IP blacklisting, where the sender’s server IP is listed as a spam source in SpamHaus, Senderbase, or other such email reputation tracking services.ĭNS blacklists (aka DNSBL) are a great way to keep out potential spammers.īut it can easily backfire if the anti-spam settings are misconfigured.įor eg. These third party services analyze incoming mail and classify them as spam or not-spam based on the sender’s server IP, message header, attachments, and more.Īlmost all mail servers refuse to admit mails marked as spam, and it shows the error “ 550 Email blocked“. Mail servers use 3rd party services such as SpamCop, MSRBL, JunkEmailFilter, etc. What causes the error “550 Email blocked”? It means that the recipient’s mail server rejected the mail from mx. because the spam filter at classified the mail as spam. The mail system : host said: 550 Email blocked by (in reply to RCPT TO command) I'm sorry to have to inform you that your message could not be delivered to one or more recipients. Here’s a typical bounce message: -Original Message-įrom: Mail Delivery System Thursday, J02:22 PM Here at, our Support Engineers maintain and support servers of web hosts, digital marketers and other online businesses.ĥ50 Email blockedis an email bounce error that we usually see in Shared servers, VPS servers and Cloud Instances. ![]() Granite and sandstone are among the most common choices for foundation stones. These will be the largest rocks used during the project. These are the stones that will make up the perimeter of your waterfall/pond. ![]() No matter what you end up doing, you will need to start with the foundation stones. The landscape experts at these locations will get you headed in the right direction. If you are unsure of where to start, you should do a little window shopping at a local landscape material shop. A uniform design may come off as more drab and boring. Note: For the best aesthetics, you are encouraged to use rocks of different shapes and sizes. There is an abundance of different materials that can be used to make a waterfall maybe you’ll end up liking something that you’ve never heard of or seen before. Doing so is necessary if you want an accurate cost estimate at the end of the planning process.
![]() Here, an inner query is used along with the 'WHERE' clause to achieve the desired outcome. In this last scenario we will see how it is also possible to create a new table from an existing one with partial data. In the previous scenario, the response was the text ' SELECT 2' which indicated 2 rows of data were inserted in the new table and in this example the system's response is a different text ' CREATE TABLE AS' which means table is created but with no data. The important point to observe here is the response from the PostgreSQL engine post table creation. Let us create a new table named ' books3' from the existing table ' books' to better understand the scenario. CREATE TABLE new_table AS TABLE existing_table This scenario is particularly important for testing the application across different environments. It is also possible to copy only the table structure and not its data. CREATE TABLE books2 AS TABLE books įrom this image, we can see a new table named ' books2' is created which is having the same structure and same set of data. Next we will execute the below COPY query to create the new table from the existing table ' books'. This image depicts the current scenario of the database. ![]() Let us look at the basic syntaxes of all the possible ways to do so: Copy table along with its data CREATE TABLE new_table AS TABLE existing_table The copy table functionality helps to copy an existing table with all its entirety. psql -U postgres -d targetdb -f sourcedb.sql Restore the dump file on the target server. Create a fresh database in target server. Copy the file to target server via putty or any other file transfer process.ģ. pg_dump -U postgres -d sourcedb -f sourcedb.sqlĢ. Dump the source database into a SQL file. Lets us take a look at the steps and their respective commands.ġ. The most efficient way to copy a database from one server to another is explained below. The ' demo' database contains a couple of schemas as shown above in the 1st image.Īfter executing the COPY query, ' demo2' database is created with the same structure. The images below explain the scenario in detail.īefore copying ' demo' database. ![]() Database is copied keeping its internal structure intact which means all schemas and their tables and other objects are copied and made available in the new database. The above query instructs PostgreSQL engine to create a new database named ' demo2' using the template of the existing database ' demo'. Let us take a look at the below query query to explain the scenario. This statement copies the source_database to the target_database. PostgreSQL helps to achieve the same using the CREATE DATABASE statement as shown below: Basic Syntax: CREATE DATABASE target_database Copy database within the same serverĪt times it is required to create an exact copy of an existing database within the same server for development or testing purposes. We will discuss both in this article.įirst we will discuss the process of copying a PostgreSQL database on the same server or from a server to another and then we will talk about various ways of copying an existing table to a new table in PostgreSQL. There are two variants of 'COPY' statement, copy a database and copy a table. In this article, we will discuss the 'COPY' functionality of PostgreSQL database which is one of the most important and often used features in practical world. Nearly 400,000 subscribers received the newsletter complete with a handwritten tip every day. Amazon has kept the Fire HD 8 Plus, which costs 20 / 20 extra, just as it did in 2020. When the last generation was launched in 2020, it cost 89.99 / 89.99, but the 2022 model starts from 99.99 / 99.99. He gave advice on dark web scans on Miami's NBC 6, discussed Windows XP's demise on WGN-TV's Midday News in Chicago, and shared his CES experiences on WJR-AM's Guy Gordon Show in Detroit.Ĭhris also ran MakeUseOf's email newsletter for two years. As with the new Fire 7, the HD 8 has had a price hike for the first time in years. In addition to his extensive writing experience, Chris has been interviewed as a technology expert on TV news and radio shows. ![]() The company's project was later reportedly shut down by the U.S. A wave of negative publicity ensued, with coverage on BuzzFeed News, CNBC, the BBC, and TechCrunch. At CES 2018, he broke the news about Kodak's "KashMiner" Bitcoin mining scheme with a viral tweet. Starting in 2015, Chris attended the Computer Electronics Show (CES) in Las Vegas for five years running. His work has even appeared on the front page of Reddit.Īrticles he's written have been used as a source for everything from books like Team Human by Douglas Rushkoff, media theory professor at the City University of New York's Queens College and CNN contributor, to university textbooks and even late-night TV shows like Comedy Central's with Chris Hardwick. His roundups of new features in Windows 10 updates have been called "the most detailed, useful Windows version previews of anyone on the web" and covered by prominent Windows journalists like Paul Thurrott and Mary Jo Foley on TWiT's Windows Weekly. Instructional tutorials he's written have been linked to by organizations like The New York Times, Wirecutter, Lifehacker, the BBC, CNET, Ars Technica, and John Gruber's Daring Fireball. The news he's broken has been covered by outlets like the BBC, The Verge, Slate, Gizmodo, Engadget, TechCrunch, Digital Trends, ZDNet, The Next Web, and Techmeme. Beyond the column, he wrote about everything from Windows to tech travel tips. He founded PCWorld's "World Beyond Windows" column, which covered the latest developments in open-source operating systems like Linux and Chrome OS. He also wrote the USA's most-saved article of 2021, according to Pocket.Ĭhris was a PCWorld columnist for two years. Beyond the web, his work has appeared in the print edition of The New York Times (September 9, 2019) and in PCWorld's print magazines, specifically in the August 2013 and July 2013 editions, where his story was on the cover. ![]() With over a decade of writing experience in the field of technology, Chris has written for a variety of publications including The New York Times, Reader's Digest, IDG's PCWorld, Digital Trends, and MakeUseOf. Chris has personally written over 2,000 articles that have been read more than one billion times-and that's just here at How-To Geek. Chris Hoffman is the former Editor-in-Chief of How-To Geek. ![]() Led by Good Housekeeping's Chief Technologist & Executive Technical Director Rachel Rothman, GHI editors and testers put a host of various cargo carriers, racks, and bags through the paces of everyday life and travel using different types of vehicles. ![]() Then, they mounted them on their cars and used the heck out of them. First, they checked each product's dimensions and versatility to pinpoint luggage carriers for every need-family road-trippers, skiers, car campers, pack rats, etc. For this test, the Institute evaluated a slew of rooftop pods, carriers, bags, and racks on the market to find the best versions of each type. The Good Housekeeping Institute has been evaluating consumer products for over 100 years, and while the methods and measurements have changed over the years, GHI's dedication to getting it right is as strong as ever. So until we can perform our own evaluations of rooftop cargo carriers, we turned to the people we know and trust: the Good Housekeeping Institute. The ability to stow your luggage and/or gear in a weatherproof, aerodynamic rooftop pod frees up cabin space for the passengers inside.Ĭargo carriers are getting better and more popular every year, but too many are difficult or unwieldy to mount, add too much weight or drag to the vehicle, or are impossible to access with convenience. Unless you drive a full-size SUV, van, or pickup truck, modern cars are generous with comfort but can be stingy on things like headroom, back-seat legroom, and interior cargo space. ![]() But all that efficiency comes at the expense of something else. Today's hatchbacks, compact SUVs, and cars are sleeker, lighter, and more fuel-efficient than the vehicles of yore. ![]() Craftsman's V20 4-Tool kit, another winner in our Home Renovation Awards, features a cordless drill, an impact driver, a reciprocating saw and a flashlight, as well as two 20-volt batteries and a charger. Lab pick: Combo kits let you build up a collection of power tools without overspending. Although the bulk of Craftsman's offerings are battery-powered, it also carries many corded electric tools, especially heavy-duty products, such as chop saws and grinders. "You might even see professional contractors walking out with a Craftsman," Berendsohn says, noting that its tools sometimes perform as well as their professional-grade competitors in Popular Mechanics tests. After Craftsman was bought by Stanley Black & Decker in 2017, our experts have seen serious improvements to the legacy tool brand, which still offers some of the best prices around. Lowe’s customers should check out Craftsman, since the big-box giant is one of the brand’s biggest retailers. $115 at Amazon $126 at Walmart $139 at Home Depot Credit: Ryobi "The drill has plenty of power for drilling into drywall and dimensional lumber, and the driver's extra speed and torque is great for removing large lag bolts,” noted one tester. Lab pick: Although many Ryobi tools make our lists of winners, our experts were particularly impressed with the ONE+ HP 18V Brushless Drill and Impact Driver Kit, enough to make it a winner in Good Housekeeping's 2023 Home Renovation Awards. "It's nice knowing that the same battery that powers my cordless drill will also work for my leaf blower or the inflator for my kid’s bike tires.” "This is one of my top choices for DIYers," says home improvement and lifestyle expert Kathryn Emery of Be The Best Home. (The brand's 18V ONE+ line has more than 280 products in all, and the 40V line has close to 100.) ![]() Our experts like the incredible breadth of Ryobi's battery platform, which allows the same battery pack to be used across multiple tools. Ryobi is one of two Home Depot–exclusive power tool brands, along with Ridgid. ![]() If you shop at Home Depot, you've probably seen this manufacturer's products, with their signature yellow-and-black branding. Play icon The triangle icon that indicates to play Once you've perused our picks, read on for more expert advice on shopping for power tools. We divided the list into brands geared toward DIYers and those aimed at professionals. For good measure, we also gathered insights from Roy Berendsohn, senior home editor at Popular Mechanics, our partner publication, as well as other experts in the field.īased on those inputs, below are the 10 brands to consider as you build out your arsenal of power tools. ![]() That raises the question: Which brand is right for you? Having tested hundreds of tools over the last decade from all the major players, our experts at the Good Housekeeping Institute's Home Improvement & Outdoor Lab are here to steer you in the right direction. No wonder home centers and hardware stores have aisle after aisle of power tools. And a capable circular saw is the only way to cut through large pieces of lumber, short of sweating for hours over a handsaw. A high-powered pressure washer can blast away stains from decks and driveways in a fraction of the time it takes to tackle them manually with a scrub brush and elbow grease. A trusty cordless drill will help you speed through a range of projects, from hanging shelves to assembling furniture. You don't need to be a remodeling contractor or professional woodworker to appreciate the many benefits of power tools. ![]() ![]() This is the year that will reveal which opinion is more correct. ![]() He will have a team that is slightly worse but similar to 2021. But in 2022, Prescott will be the healthiest he has been in years. In 2021, the inconsistency started after the calf strain. These are the two opinions that are observable with one search for “2022 QBs ranked.” And 2022 is an important year for these two dissenting opinions.īecause in 2020, Prescott only played five games and excelled in those matchups. Prescott clearly has the talent to be a top-tier quarterback but the application of that talent is not consistent enough to inspire the utmost faith. While Prescott’s 2021 campaign might have been respectable as a whole, between weeks it was inconsistent, messy, and led to an early exit in the postseason. This seems to be the group that most Cowboys fans side with. He still mixed in enough boffo games to finish with strong stats, but the bar is higher for Prescott, considering his teammates. But the inability to win in the postseason is starting to raise a few questions.Īnd then we have the “week-by-week” group, which can be summarized with the NFL’s evaluation:Īfter Prescott’s fast start to the season, his inaccuracy and tentative play made for one of the most inexplicable stories in the entire league. While the playoff loss against the 49ers was not Prescott’s greatest moment, the “big picture” group doesn't seem too concerned with it. When looking at the 2021 season as a whole they saw a Cowboys offense that finished first by points and yards, won 12 games, and took the third seed in the NFC. We can label this opinion the “big picture” group. All we’re waiting to see from Prescott is if he can get the Cowboys beyond the divisional round - he’s 1-3 in the postseason, including a loss to the 49ers in the wild-card round this year. There is group one, which can be best summarized with NBC Sport’s evaluation of Prescott:ĭak’s sixth pro season was by far his best, with career-high marks in touchdowns, completion percentage and passer rating, finishing in the top five in the league in all three categories. And one group is going to be right in 2022. Because the most prevalent takeaway from these ten rankings is that two groups have emerged. Since he almost exclusively falls as either eighth or ninth, one would think that people seem to be on the same page about Prescott.īut this is not the case. But by all other accounts, the NFL community views Prescott as a top-ten quarterback. At face value, PFF seems to have Prescott inside their top ten while CBS Sports does not. CBS Sports: Tier 4 “You Can Win With Them,” right behind Derek Carr, Kirk Cousins, and Ryan Tannehill.PFF: Tier C “The Mixed Bag,” right ahead of Kyler Murray and Derek Carr.So, at the most basic level, here is where Prescott lands when power ranking the current quarterbacks in the league heading into 2022: The outlets selected were the first 10 results that appear when searching for a ranking of the 2022 NFL quarterbacks. We will look at 10 different sports media outlets. But from a bird’s eye view, what is the prevailing opinion of Dak Prescott? By most accounts, Dak is a top 10 quarterback but this is a telling year Photo by Michael Zagaris/San Francisco 49ers/Getty Images The beauty of sports is that all of these opinions are able to coexist. Some might see him as a hyper-competitive quarterback who will do anything to win. Others might see him as a player that doesn't win when it matters. Some might think of Prescott as a dual-threat quarterback at times. Some might see Dak as a polished pocket passer. And when looking this closely, there are different aspects that people might see. Dallas Cowboys quarterbacks are placed under a microscope. Saying the name Dak Prescott is enough to warrant opinions of all shapes and sizes. ![]() You could also go all in and roll your own luma-only converter, though that's probably overkill. It's not quite the same as a luma value, but it means you can do it all in matplotlib.Īlternatively, you could use PIL or the builtin colorsys.rgb_to_yiq() to convert to a colorspace with a true luma value. Try using _to_hsv(img) then slicing the last value (V) from the array for your grayscale. matplotlib does not appear to provide a mechanism to convert to YUV/YIQ, but it does let you convert to HSV. The basic steps you need to do are to transform from the RGB colorspace to a colorspace that encodes with something approximating the luma/chroma model, such as YUV/YIQ or HSL/HSV, then slice off the luma-like channel and use that as your greyscale image. The tutorial is cheating because it is starting with a greyscale image encoded in RGB, so they are just slicing a single color channel and treating it as greyscale. Img_diff = np.ndarray(shape=img1.shape, dtype='float32') Photoshop: Turn Any Image Into An 8-Bit Image Instance 158 subscribers Subscribe 29 Share 4.8K views 5 years ago Thanks for watching my video on how to turn any image into an 8it. Img2 = np.array(Image.open(z).convert('L')) Print(' seconds'.format(k, sum(v) / len(v))) Run_times.append(time.time() - start_time) Img = np.array(Image.open(z).convert('L')) Run_times.append(time.time() - start_time) start_time = time.time() Run_times = dict(sk=list(), pil=list(), scipy=list()) In addition the colors are converted slightly different, see the example from the CUB-200 dataset. PIL and SciPy gave identical numpy arrays (ranging from 0 to 255). Three of the suggested methods were tested for speed with 1000 RGBA PNG images (224 x 256 pixels) running with Python 3.5 on Ubuntu 16.04 LTS (Xeon E5 2670 with SSD). If necessary, set the new size of the image and the angle. In the horizontal toolbar, which lists the set of target formats, select, by pressing, the formats in which you want to convert your images. Gray = 0.2989 * r + 0.5870 * g + 0.1140 * b To convert or modify your images, you need to perform several sequential steps: Click 'Upload File' and select the image file you want to convert. Matlab's (NTSC/PAL) implementation: import numpy as np Sebastian has improved my function, but I'm still hoping to find the built-in one. It's horribly inefficient, but that's why I was hoping for a professional implementation built-in. I wrote a very simple function that works with the image imported using imread in 5 minutes. Isn't this a common operation in image processing? I find it hard to believe that numpy or matplotlib doesn't have a built-in function to convert from rgb to gray. You may also select buttons representing the 8-bit / 16-bit retro game consoles of ages past, and we will make some educated guesses based upon your image size. They just read in the image import matplotlib.image as mpimgĪnd then they slice the array, but that's not the same thing as converting RGB to grayscale from what I understand. Instructions: Drag your image in and modify the amount of pixelation and color reduction by using the sliders above. ![]() In the matplotlib tutorial they don't cover it. In matlab I use this: img = rgb2gray(imread('image.png')) I'm trying to use matplotlib to read in an RGB image and convert it to grayscale. ![]() If there were decent musicians who could still play instruments, producers who put more value on it than compiling music on PCs and laptops, the format would be superfluous. Honestly, I don’t need it and don’t buy a new Dac because of the hype.īesides, I’m someone who wants to enjoy music and not know what’s being mixed, so I’m not interested. ![]() Since I don’t have a Mqa Dac, I don’t know how good Mqa is. To quit Tidal because of Mqa is a waste of time.Įven up-sampled in DSD format, there were zero differences. In conjunction with Tidal and Quboz did not reveal anything alarming.Īlthough the Tidal version was in Mqa, and in Quboz 24/x, I upsampled with Audirvana on my non-Mqa Dac and in my 32/96 format, there were zero differences. Who knows, Tidal might start to sell content in MQA, just like Qobuz does for high resolution PCM. DSD streaming will not be a reality any time soon. That’s where MQA has the biggest potential. It’s also true that a higher quality DAC will make a greater difference than MQA ever can.Īfter years of MP3 being good enough, even the consumer oriented streaming services are now looking at offering a higher quality streaming. It was no longer a problem of support on the reproduction end, there was just not enough content to make it viable. Because of the superior oversampling chips, the normal CDs sounded better. Something similar happened to HDCD when most of the higher end CD players started supporting it. It’s a somewhat well kept secret that MQA DACs can sound better with regular PCM content due to better processing chips. It’s not worse than that and you’ll have potentially some benefit with quality MQA DAC. ![]() If you’re focusing on redbook audio, MQA would also make sense. I wouldn’t mind it being just one more format being offered. MQA will never by be all and all solution. |
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