The end goal is to build the right solution to the business problem. So don’t be afraid to improvise, and create engaging, clear, consistent and concise diagrams. A slightly unconventional diagram that helps to bring clarity is better than strict adherence to the rules in the models that the audience does not understand. Remind the stakeholders that the new system will not replace all the old clunkersĪ business analyst must use a variety of tools to create a shared understanding of business requirements.Shows the complexity of the system interconnections at high level – can be used as a communication tool with business stakeholders and executive sponsors.Brings attention to interfaces (automated or manual) that must exist to exchange data between systems.Highlights actors that must use multiple systems to do their job (“swivel-chair” user experience).Captures multiple systems required to support the complete user experience.Provides a view of use cases across the end-to-end process.Expanded use case diagram – includes multiple systemsĪdvantages of the expanded use case diagram: Even without explicitly showing integrations between systems, we have more useful information about the context of the new solution. In the expanded diagram, we can see other systems that are involved, and what use cases each system supports. This is where an expanded use case diagram comes in handy. What happens with the orders that are ready for delivery? How are the deliveries scheduled? Who ensures that all required ingredients are purchased? Now, do you understand how the order will be processed end-to-end? Not really, as the new system clearly deals with only subset of use cases. The boundary of the new system has been defined, and use cases in scope have been captured: Simple use case diagram – one system boundary The project is going to build a new Online Ordering System. Adding more to the model can save you a lot of explaining and additional narrative. 2 days ago &0183 &32 Step 4: Create a bar chart. In these circumstances, a use case diagram that includes several systems can help understand who does what and where. Many organizations manage complex landscapes of legacy systems, and new applications and COTS implementations with various degrees of interconnectedness. What about other use cases that are not in the diagram? How will those be accomplished? And the context usually involves other systems.Ī use case diagram that focuses on one system only will leave some questions unanswered. In real life, however, whenever we capture the scope of a solution or a system, we need to keep the context in mind. It may be sufficient for discussing the system itself. Without getting into specifics of relationships such as extended and included use cases, a high-level use case diagram is perfect for depicting a scope of a solution for all audiences.Ī classic use case diagram has a single system boundary. It has three self-explanatory elements – the boundary, the actors and the use cases. It’s simple, clear and business-friendly.
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They’re known for loving attention and being great with kids. Like the Devon Rex, the curly hair and affectionate personality of Cornish Rex cats make them popular pets. So, if you are away from home for long periods of time, the Devon Rex may not be the best breed for you. This breed is affectionate and intelligent, but they need a lot of attention from their family. With short, curly hair, the Devon Rex is another one of the best cats for allergies. But that lack of hair doesn’t mean they don’t need to be groomed-for their skin to remain healthy and free of oil, they need regular maintenance. Sphynx cats can be completely bald or have a thin layer of peach fuzz, but all produce fewer allergens than many furry breeds. Sphynx Photo credit: iStock/Drazen_Ĭompared to other cat breeds, Sphynx cats have a unique hypoallergenic quality: their near-nakedness. These calm kitties can be shy around strangers and may take some time to warm up to new people. Hypoallergenic Russian Blue cats have an affectionate personality and a quiet nature that make them popular pets. Russian Blue Photo credit: iStock/Drazen_ But these energetic and intelligent cats can be a handful for the unsuspecting pet parent, and some cities have regulations-or full-on bans-in place against them. Their gorgeous, spotted short coat comes from their Asian leopard cat ancestors, giving them a wild appearance that makes them stand out. Bengal Photo credit: Adobe/inguskīengal cats are a unique hypoallergenic breed. However, they can be demanding in terms of attention and aren’t a good fit for families that are often away from home. Known for their vocal nature and adoration for their pet parents, Siamese cats have a lot to offer. This means they don’t produce as many allergens as some other breeds. While there are zero non-shedding cats, this blue-eyed feline has a short coat that doesn’t shed heavily. Siamese Photo credit: Adobe/VesnaĪnother hypoallergenic cat is the Siamese. Along with being a good cat for allergies, Siberians are friendly, affectionate, and make great family pets-if you can keep up with their regular grooming needs. Despite having thick, long hair, they produce less allergen-causing proteins than many other cats. Siberians are a popular hypoallergenic breed. Keep in mind that, before bringing home a “hypoallergenic” cat, spend time with the breed to determine how your allergies react. Here are some of the most common cat breeds for people with allergies. There is no such thing as a completely hypoallergenic cat, but certain breeds might be a better fit for some people who sneeze and itch around kitties. While all cats produce allergens in their fur, saliva, and urine, some breeds (commonly called “hypoallergenic cats”) produce lower levels of the proteins that trigger allergies. That said, there are some “hypoallergenic” cats that can be a good fit for your allergies. But if you’re allergic, opening your house to a feline friend can be … complicated. The Rincon Mountains are the backdrop, and you'll see why this area is called the Cactus Forest - saguaros abound. When we went in March, the wildflowers were just starting, and it was beautiful. You can access several trailheads from this loop road and there are plenty of pull-outs and vistas. He said that the tortoises spend a lot of their time underground. They tag the tortoises, then listen to beeps as they walk along with the antenna in order to find them and gather information on how far they travel, etc. We stopped at the first pull-out and we were lucky enough to run into a ranger who was tracking tortoises with an antenna. It's a combination one-way and two-way road, but trailers over 35 feet are not permitted. This scenic drive is about eight miles but it will take you a while because you'll want to stop and look around and take photos. You can ask for trail maps and information at the visitor center, buy some souvenirs, then follow the signs to the loop drive. There is a loop drive through the western part of the Rincon District that you should definitely investigate. The Rincon Mountain District of Saguaro National Park is easy to get to: Take the Old Spanish Trail from Tucson to the Rincon Visitor Center. There are two different parts to this park: the Tucson District west of Tucson, and the Rincon District which is just southeast of Tucson. This is a gorgeous time of year to visit Saguaro National Park. After all these files are loaded, the GPU enables the CPU with the kernel as the starting execution point. The most important data that start4.elf (or one of the alternatives) loads into memory are a kernel, an initial ramdisk and the kernel parameters. The Pi will take from this directory whatever it needs. Pi-prepared operating systems will contain all necessary files in a single directory. It’s not necessary to think too much about which specific files will be loaded. This alternative boot file disables some GPU features that can only function when more memory is available. For example, if config.txt states that the GPU should only use 16 MB of memory then start4cd.elf will be loaded instead. Their location has already been determined earlier.Īfter parsing config.txt, commonly start4.elf and other related boot files are downloaded and executed. This file only determines which files are loaded, not from where they are retrieved. This file determines which boot files will be downloaded next, and can freely be configured by the Linux distribution or the user. The first file that is actually downloaded is config.txt. If it fails to detect start4.elf in its own directory, the Pi will attempt to get the boot files from the root directory of the TFTP server instead. This function allows each Pi in the same network to have its own boot files. If the TFTP server reports that start4.elf exists in this directory, all other boot files will also be loaded from the same directory. While connecting to the TFTP server, the Pi 4B will first attempt to get start4.elf from a directory based on the Pi’s serial number, the embedded Ethernet controller’s MAC address or a custom value, depending on the configuration in bootconf.txt contained in the EEPROM. When booting from network, all necessary network configuration parameters can either be provided through DHCP (as with previous Pi models) or in the early boot configuration contained in the EEPROM. Check out this page for the last beta version. Newer versions have been released since then that fix bugs. A beta version of the EEPROM boot code was released on 23 September 2019 which allows a Pi 4B to load the necesary files either from an SD card or from a TFTP server using the embedded Ethernet controller. Fortunately, the EEPROM can be reprogrammed with newer boot code released by the Raspberry Pi Foundation. All current Pi 4B computers were shipped with EEPROM boot code that can only load the necessary files from an SD card. The purpose of the EEPROM boot code is to load and execute the next boot stage contained in start4.elf. The early boot configuration (bootconf.txt).Note that the Pi 4B does not use bootcode.bin. A proprietary binary blob, similar to bootcode.bin for the older Raspberry Pi models.The EEPROM contains 512 KiB of boot code that is executed after the ROM code is executed. The system on chip (SoC) of the Pi 4B is the BCM2711B0, which contains an embedded EEPROM. It is after executing the code in ROM that the new boot process differs. Some non-critical boot files are not mentioned, such as fixup4.dat (used for shared memory management between the GPU and CPU).Īs noted in the older article, a Pi’s boot process always starts with the graphical processing unit (GPU) running proprietary code from ROM. A few liberties were taken to simplify the drawing. However, some preparation of the Pi 4B might be necessary, depending on its age.Ī typical Raspberry Pi 4 network boot is shown in the above figure. It is possible to network boot a Raspberry Pi 4 Model B (Pi 4B) without an SD card. This post does contain an up-to-date DHCP server configuration which can also be used to boot older Pi models in addition to the Pi 4B. Some parts were taken from my previous post concerning network booting older Raspberry Pi models. What is written here is based on this page from the Raspberry Pi Foundation and on my own findings. The new boot process will be explained, and a configuration will be offered that will allow network booting of both older and newer Raspberry Pis in a single network. The new boot procedure of the Pi 4B is unlike its predecessors, and this warrants a new post. I did this earlier for older Raspberry Pi models. In this post I explain the ins and outs of network booting a Raspberry Pi 4 Model B (Pi 4B). Space is a dangerous place to do business-but it’s a very rich one as well. There is no denying either, however, that in that same decade, the Webb should return magnificent science too. But there is no denying the certainty that over the decade or so the telescope is set to be operating it will be tattooed again and again by high speed dust and grains. NASA can often forecast the approach of micrometeoroid showers and the telescope can be moved to position its mirror away from the direction of the incoming debris. Ground crews have already adjusted the damaged segment accordingly, keeping the telescope on track to release its first images to the public on July 12. The position of the mirror segments can be moved in increments measured in nanometers-or billionths of a meter-allowing a damaged segment to be precisely refocused to cancel out the effect of the ding. That does not remotely mean that the telescope is seriously damaged before it can even go about its work. “This one…is larger than our degradation predictions assumed.” “With Webb’s mirror exposed to space, we expected that occasional micrometeoroid impacts would gracefully degrade telescope performance over time,” Lee Feinberg, a Webb telescope optical manager, said in a statement. What makes the recent micrometeoroid hit especially troubling is that while NASA scientists simulated such collisions on the ground, the impact that occurred is bigger than the ones they modeled. But if you’re going to do your work where Webb does, it’s a risk you have to take. That’s a heck of a piece of hardware to leave exposed to the space elements. Meanwhile, the beryllium is so smoothly polished that if it were expanded to the size of the United States, its biggest imperfection would be 7.6 cm (3 in.). All of them are covered with reflective gold, but in a film so thin that if it were peeled off and tamped down into a sphere, it would measure no bigger than a golf ball. Together, the segments, made of beryllium, have an area of 25 sq. Measuring 6.5 m (21 ft., 4 in.) across, it’s made up of 18 hexagonal segments, each of which can be moved along seven different axes to allow controllers to focus the overall instrument. Its high-resolution and high-sensitivity instruments allow it to view objects too old, distant, or faint for the Hubble Space Telescope. The Webb’s mirror is an exquisite piece of engineering. The James Webb Space Telescope (JWST) is a space telescope specifically designed to conduct infrared astronomy. Note: If you haven’t set a file or folder to online-only, then all files and folders in the Dropbox folder on your computer are available offline. If you’re on Mac, check for the sync symbol described in this article. If you’re on Windows, check for the sync symbol described in this article. How do I know if a file is online-only or available offline? If you don’t want a file or folder to take up storage space on your device, set it to online-only. This means that it’ll take up storage space on your computer or mobile device and. If a file or folder is available offline, you can open it from the Dropbox folder on your computer or the Dropbox mobile app even when you’re not connected to the internet. Online-only files take up storage space on. When you set a file to online-only, it’s stored online and it won’t take up storage space on your computer or mobile device. This won’t affect existing files and folders. New files won’t take up storage space on your computer. This setting means that all future files and folders that you add to the Dropbox folder on your computer will be online-only. Click the dropdown next to New files default.Click your avatar (profile picture or initials) in the top-right corner.Click the Dropbox icon in your notification center (Windows) or menu bar (Mac).To make all files that you add to the Dropbox folder on your computer online-only by default: This means that the file or folder is online-only. Tap “ ⁝“ (vertical ellipsis) for more options.To make files online-only in the Dropbox mobile app: If you’d like to store the file or folder on your hard drive instead, click Make available offline.Navigate to the file or folder you’d like to set to online-only.To make files online-only in the Dropbox desktop app: You can change it back to online-only at any time by following the instructions below. This means the file is stored on your hard drive. Note: When you open an online-only file from the Dropbox folder on your computer, Dropbox automatically downloads the file so you can access it. Online-only files won’t take up storage space on your computer’s hard drive. You can make files online-only from the Dropbox folder on your computer, or on the Dropbox mobile app. It supports over 400 formats, with most being video presets. That's because this site is quick to load and is simple to navigate. Whenever I want to convert small files of any format online, Online-Convert immediately comes to my mind. They are neat, quick, and support an extensive collection of formats. Top 8 Anything to MP4 Converter Online Freeīesides the Wondershare UniConverter, you can also transcode anything to MP4 using some conversion sites. If you want to share your MP4 file on either Vimeo or YouTube, scroll down the list and choose these presets.Īfter setting your target destination or folder path under the File Location section, just hit the Convert button or Start All, and the UniConverter will take care of the rest.įree Download Free Download Part 2. After that, click the MP4, then select a resolution. To select a different format, click the setting icon, then tap the Video. Also, note that the UniConverter supports batch conversion. Run this MP4 converter, then drop your MP4 video on the Converter window or click the to locate and upload local files. And lest I forget, the UniConverter comes with a robust multimedia player for playing anything. It can also edit MP4 before converting by flipping, rotating, cropping, and so on. It can convert MP4 to AU, AAC, OGG, MOV, VOB, TS, M2TS, etc. That said, Wondershare UniConverter supports 1,000+ video and audio formats. It's lightweight, quick, and feature-rich. Wondershare UniConverter is the best anything to MP4 video converter program for desktops. Anything to MP4: Convert Anything to MP4 with UniConverter Top 8 Anything to MP4 Converter Online Free So if you have videos of different formats, this guidepost will show you the quickest method of converting anything to MP4 with lossless quality. It offers vivid images, clear sounds, is small in size, and is supported on all websites and devices. However, no other video format can compare to MP4. From WEBM and WMV to MOV and AVI, your movies will come in all sizes and forms. There are lots of digital video formats currently. 3.34 Simple Steps to Convert WMA Format to iTunes Format in 2020.3.33 5 Recommended Ways to Convert AC3 Format in 2020.3.32How to Convert WAV to MIDI Format in 2020.3.31 Best Way to Convert MIDI to WAV Format in 2020.3.30 6 Tips for Converting SWF Files in 2020.1.23 How to Use Handbrake to Convert WebM to Any Video Format.1.22 Best Way to Convert 3GPP to Other Formats in 2020.1.20 How to Convert WMA to MP4 Format with VLC in 2020.1.19 How Can You Convert MP4 to MIDI Format in 2020.1.18 Easy Steps to Convert Videos to MIDI Files in 2020.1.15 Trim Videos on Windows Media Player.1.14 Easy Steps to Convert Video to Live Photos.1.13 Top 10 Song to Ringtone Converters. There’s a red-eye tool that helps desaturates the red pixels on the target area and lessens the effect. You just need to tap to remove the red-eye of people or pets from your favorite photos. You can instantly fix crooked images, fix horizontal and vertical perspective distortions, and correct distorted camera angles. Moreover, you can share these photos in e-mail WhatsApp, Facebook Messenger, Line, Photoshop, Lightroom, Creative Cloud, Google Photos, Dropbox, Facebook, or the camera roll to inspire others. Also, you can post your beautiful photos to Facebook, Instagram, Twitter, Flickr, and other social media platforms. You can upload images from different sources and formats. Moreover, the comprehensive photo editor helps in polishing the photos for you to turn your imagination into reality. The app’s easy-to-use interface provides flawless switching between different edits. Also, you can take or snap photos within the app. You can quickly open your photos from your device. The slider controls help to have fine-tuned color temperature, tint, and other color effects. Dehazing pictures are removing the fog in the scene and applying filters to pictures. Also, it has added whites, blacks, sharpen, saturation, and de-haze to make your photos more appealing. It provides adjustments for exposure, brightness, contrast, highlights, and shadows. One-Touch Adjustments, New Corrections, and Slider Controls Also, crop provides easy one-touch default aspect ratios. Moreover, you can crop, straighten, rotate clockwise or anticlockwise, and flip photos horizontally and vertically. You can freely and quickly fix your photos. Moreover, you can create vignette effects, apply borders and photo frames, and stamp creations with watermarks. Also, you can style your photos by adding text with different fonts and layouts. You can customize the images by adding stickers, memes, and captions. To give you an idea, here are some of the best features this photo editing app has. Imagine your regular Adobe Photoshop but only on steroids and you’ll get the picture. It is easy to remove or erase spots or imperfections.Īdobe Photoshop Express offers an extensive and robust set of features creatives can exploit. You can apply the style you used in one image to all images in a collage. Also, we can add stickers, tattoos, and text styles. We can add different styles with impressive borders, layouts, and backgrounds. It makes us creative by using eye-catching effects. We can adjust the contrast and exposure in just one click. It serves as a one-touch transforming app for our photos. It can also be installed on Windows desktops and laptops with Windows 8 and up via the Microsoft store.ĭownload Adobe Photoshop Express for AndroidĪdobe Photoshop Express makes it easy for us to edit our pictures, be creative enough, and share our amazing photos on social media. This app is available on Android, iOS, and Windows phones and tablets. Furthermore, even complete beginners will be able to produce amazing pictures. The wide range of easy-to-use adjustment tools and filters makes it easy for you to make unique creations out of your photos. Also, it offers sliders, which can be used in adjusting colors, contrast, vibrance, and more. Using that, you can instantly adjust the brightness, exposure, and shadow. This app also includes the Auto-fix function. These include crop, rotate, straighten, flip, contrast, red-eye removal, and many more. You can use this to touch up and improve your photos with its features. Moreover, it helps you to make adjustments and filters to your photos and make the most out of them. It lets you make quick, powerful, and easy editing of photos and create collages that will satisfy you. What Is Adobe Photoshop Express? Photo by Yannn on Īdobe Photoshop Express is a free image editing and collage-making mobile app. Have Amazing Photos With Adobe Photoshop Express.How To Download And Install Adobe Photoshop Express On Android Devices.How To Use The Adobe Photoshop Express To Edit Photos. As YouTube’s partner product manager Varun Talwar notes, the team “developed these features with the expectation many more of you will eventually use YouTube Live, and like we said last year, this process takes time to roll out broadly. Sadly, though, this first anniversary doesn’t mark the full rollout of YouTube Live to all publishers. Wirecast for YouTube Live will enable producers to easily capture and switch between different sources and add live effects and overlays to their videos. With this, YouTube’s partners should be able to produce more live events and make them look more professional. Google today also announced that it will make a special YouTube Live version of Wirecast, a professional webcasting solution that generally retails for around $449, available to all of its partners. It’s worth noting that Ustream and a number of other live streaming services have offered pay-per-view as an option for a while now. Publishers will now also be able to see how many users are watching a live stream in real time. Publishers, of course, can also chooseto display Google ads as well. Now, YouTube publishers in the U.S., Canada, France, Japan and Great Britain who have access to YouTube Live can set up this service in a few minutes and start monetizing their events this way. Until now, pay-per-view was only an option for select publishers who worked directly with Google. The most important new feature, though, is the addition of pay-per-view as a monetization option for all publishers. Most of these (new production software, improved publishing flows and real-time analytics) are mostly of interest to video producers. To mark this event, YouTube is adding a number of new features to Live today. It’s a tool I use all the time to make tutorials and edit together videos.YouTube Live, Google’s live streaming platform, celebrated its first birthday over the weekend. Pop over and get Wirecast now and have a ball! Want to record your screen or edit video? Just because you can do such a myriad of things with Wirecast doesn’t mean you have to! Grab it now And I recommend getting that “Titler” plugin working so that you can display live Facebook comments. It’s nice to make sure the broadcast is actually going and the audio is working. It’s also nice to have a second laptop or tablet to watch the live show as the audience sees it. For example, I often forget to un-mute the audio output, so I’m 5 minutes into the broadcast and I go check the comments that no one can hear me! When you go live, you can just tell your audience, “Hey I’m trying to figure out this live broadcast thing!” And have fun with it! I still mess up from time to time. Don’t be too serious about your test run, because you’ll learn a lot. I suggest you carve out 2 or 3 hours to go through the tutorial and then set up your own scene for a test run. We talked a lot about quadcopters and streaming, but really about many other subjects too. I did an interview with the great team over there at Wirecast. If you had a person in a “producer” role they could do all the scene swapping, then even more is possible. Usually I just do the broadcast myself, so I can’t be switching around to a bunch of different scenes. You can have multiple talking heads, people connecting via Skype, mix together live feeds and canned video, special titling, multiple scenes. You can basically do everything a news network can. Wow you can do a thousand things with this software. Wirecast Play (Free), Wirecast Pro and Flash Media Encoder.
It delivers the room, visibility and all-wheel drive of an SUV in a package that's affordable, small and easy to park. There's a lot to like about the 2015 Chevrolet Trax. The Juke scored 28 m.p.g., but it uses premium gasoline, so running it will cost more than the Trax. The Mitsubishi Outlander Sport matched the Trax's combined rating. It's likely the CX-3 and some models of the 500X and Renegade will also top the Trax. Its combined rating beat the Trax by 2 m.p.g. The HR-V is the only one of the new subcompact SUVs the EPA has rated so far. in the city, 31 on the highway and 27 in combined driving. The suspension absorbs bumps well, though road and wind noise are quite noticeable at highway speeds. It slips with ease into spots that would squeeze a midsize sedan, much less a bigger sedan. The Trax's small size makes it a delight to park. That translates to good acceleration around town and power for fast highway cruising. The 1.4L four-cylinder turbo generates a healthy 148 pound-feet of torque from just 1,850 engine rpm. The optional Bose audio sounded terrific. There were also some glitches after I paired my phone. Siri's lag time is acceptable in a $12,000 vehicle like the Chevy Spark, but at $26,530, the Trax LTZ competes with better systems. The built-in VR systems other vehicles offer respond much more quickly. Voice recognition is poor, largely because of Siri's slow response time. There are no dials for the audio system, although toggles for volume and tuning on the steering wheel help. The touchscreen is small and difficult to use in a moving vehicle. The high seating position and big windows provide a very good field of view. There's good storage space for a small vehicle, including a small drawer under the passenger seat in my top-of-the-line LTZ. The interior materials are pretty basic, with hard surfaces covering the dash and door tops. A 60/40 split folding rear seat and fold-flat front passenger seat allow the Trax to carry larger items than you imagine possible in a vehicle that's 5 inches shorter than a Ford Fiesta subcompact sedan. The interior provides plenty of head and legroom. Its controls, voice recognition and fuel economy – are likely to be at the low end of its class, however. The Trax is a roomy, comfortable vehicle and attractive vehicle with some nice features. The Trax compares well to the Mitsubishi Outlander Sport and Nissan Juke, which are already on sale. The available evidence suggests the Trax will be at the low end of both prices and fuel economy in the segment. We know the Trax's price and EPA fuel economy rating, but we do not yet have all that information on the Fiat 500X, Honda HR-V, Jeep Renegade and Mazda CX-3. Rating the Trax is tricky because its most direct competitors aren't on sale yet. I tested a loaded all-wheel-drive LTZ that had a touchscreen 10 air bags cruise control Bluetooth compatibility Bose audio backup camera rear parking assist power driver's seat, windows and locks remote start, and voice recognition that used my iPhone 6's Siri assistant. All models come with a 1.4L turbocharged four-cylinder engine and six-speed automatic transmission. Trax prices start at $20,120 for a front-wheel-drive model. The Trax's "best by" date may be about to pass as newer competitors reach dealerships. The result is like buying a Michigan Honeycrisp apple that's been in the produce department a day or two too long: Still tastier than any other apple in the produce department, but it would've been a real delicacy if you bought it a day or two ago. Chevrolet sells the Trax in nearly 70 countries. has been on sale in other countries for several years. That's because the Trax - just going on sale in the U.S. The three-star 2015 Chevrolet Trax LTZ AWD subcompact SUV is a new vehicle, but there's a strong likelihood it'll feel old soon. Watch Video: 2015 Chevrolet Trax LTZ AWD video review |
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