Copyright Proposalmr. Mac's Virtual Existence
- Virtual PC for Mac Earlier software from Microsoft that enabled Windows applications to run on PowerPC-based Macs under Mac OS X up to, but not including, the G5 processor. It contained a complete version of Windows XP Home or Pro or Windows 2000 Professional that ran as a Mac application.
- Fannie Mae and Freddie Mac announce flexibility with regard to post-closing quality control (QC) requirements for all loans selected for post-closing QC review until June 2020 QC selections. Subject to conditions, for specific income, employment or asset reverifications that are typically mailed, the verifications may be completed verbally.
- The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudoedit.c race condition in replacing a user.
- Your service request number is a tracking number for your copyright certificate. Can I copyright my recipe? If you are trying to protect just a listing of recipes, copyright law will not protect the work. Also, copyright law will not protect just listings of ingredients such as those found in formulas, compounds, or prescriptions.
MAC'S VIRTUAL EXISTENCE. Online Learning Home Design/Media 10 Design/Media 20 Design/Media 30 Saving and the Network Drive.
Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.virtual memory
[′vər·chə·wəl ′mem·rē] (computer science)virtual memory
(memory management)Virtual memory is usually much larger than physical memory, making it possible to run programs for which the total code plus data size is greater than the amount of RAM available. This is known as 'demand paged virtual memory'. A page is copied from disk to RAM ('paged in') when an attempt is made to access it and it is not already present. This paging is performed automatically by collaboration between the CPU, the memory management unit (MMU), and the operating systemkernel. The program is unaware of virtual memory, it just sees a large address space, only part of which corresponds to physical memory at any instant.
The virtual address space is divided into pages. Each virtual address output by the CPU is split into a (virtual) page number (the most significant bits) and an offset within the page (the N least significant bits). Each page thus contains 2^N bytes (or whatever the unit of addressing is). The offset is left unchanged and the memory management unit (MMU) maps the virtual page number to a physical page number. This is recombined with the offset to give a physical address - a location in physical memory (RAM).
The performance of a program will depend dramatically on how its memory access pattern interacts with the paging scheme. If accesses exhibit a lot of locality of reference, i.e. each access tends to be close to previous accesses, the performance will be better than if accesses are randomly distributed over the program's address space thus requiring more paging.
In a multitasking system, physical memory may contain pages belonging to several programs. Without demand paging, an OS would need to allocate physical memory for the whole of every active program and its data. Such a system might still use an MMU so that each program could be located at the same virtual address and not require run-time relocation. Thus virtual addressing does not necessarily imply the existence of virtual memory. Similarly, a multitasking system might load the whole program and its data into physical memory when it is to be executed and copy it all out to disk when its timeslice expired. Such 'swapping' does not imply virtual memory and is less efficient than paging.
Some application programs implement virtual memory wholly in software, by translating every virtual memory access into a file access, but efficient virtual memory requires hardware and operating system support.
virtual memory
Simulating more random access memory (RAM) than actually exists, allowing the computer to run larger programs and multiple programs concurrently. A common function in most every OS and hardware platform, virtual memory uses storage (hard drive or SSD) to temporarily hold what was in RAM.Virtual memory allows multiple programs to load in RAM at the same time. Each application addresses RAM starting at zero, but virtual memory takes control of the RAM addressing and lets each application function as if it had unlimited RAM.
Note that virtual 'memory' and virtual 'machine' are not the same. Virtual memory is used all the time, whereas a virtual machine is an optional approach for running applications and pertains mostly to servers (see virtual machine).
Virtual Memory Pages
Copyright Proposalmr. Mac's Virtual Existence Server
The computer's real memory (RAM) is broken up into smaller segments, called 'pages,' typically 4KB in size. When RAM fills up, pages not currently in use by open applications are written to storage in a virtual memory 'swap file.' When any swapped out page in storage is required again, once again a page in RAM is written to storage to make room, and the required page in storage is retrieved.
RAM is the computer's workspace, and since there is often several hundred times more storage space than RAM space, virtual memory dramatically increases the computer's capacity to do work. However, there is a penalty. When a user has too many open programs, there can be excessive amounts of page swapping, causing applications to slow down. In addition, switching between applications is no longer instantaneous (see thrashing).
Hardware Is Required
Virtual memory can be implemented in software only, but efficient operation requires specialized hardware circuits. All modern, general-purpose CPUs have memory management units (MMUs) that support virtual memory. They provide 'page tables' that are used to translate between the program's 'virtual' addresses and the 'real' addresses in RAM and storage, which may change at any time. Although a program may initially load as a contiguous block of code, it can wind up in pages randomly scattered around RAM.
Virtual memory claims are sometimes made for specific applications that bring additional parts of the program in as needed; however, true virtual memory is built into the operating system and hardware and works with all applications. See Windows swap file.
Memory Is Extended to Storage |
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Virtual memory allows more programs to be opened simultaneously by using the hard drive or solid state drive (SSD) as temporary storage of RAM pages. |
Page Out, Page In |
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When RAM (real memory) is full and the current program needs instructions that are not in RAM, pages are swapped. In this example, program A needs a page from the disk, and a page from program C is swapped out to make room. |
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Every day you’re inundated by images. They appear in tweets, texts, and articles. You’ve probably laughed, liked, and shared countless ones. But have you ever wondered where the original image came from? More importantly, is that person even getting proper credit?
For content, it’s common knowledge that if you quote another person’s work, you better have permission -- and at the very least, cite the source. Otherwise, you’re infringing on copyright laws, which can have costly consequences.
But when it comes to images in content, it gets a little more complicated. For many, they think if it’s on the internet, it’s fair game. But that’s not how it works (that’s not how any of this works).
Source: S.quickmeme.com
Most people think by adding a couple of words, they’ve created an original meme, or by adding a different filter, they’ve created an original JPEG. Wrong. The harsh reality is that’s not always the case. The “text” or “filter” might be “original,” but the image isn’t.
Being unaware of copyright rules for images not only will leave you in hot water, but they’ll also put a dent in your wallet, too. Before you share, make sure you’re familiar with the following:
1. Digital Millennium Copyright Act
In 1998, Congress implemented the Digital Millennium Copyright Act. Like the Copyright Act, DMCA offers protection to content such as ebooks, photographs, websites, music, even databases.
Under DMCA, you must request permission from the copyright holder or their agent to do any of the following:
- Scan a photograph.
- Use an image from a website.
- Post an image to a website.
- Forward an email with an image in the body or as an attachment.
For example, PBS.org has a food blog that includes recipes from “In Julia’s Kitchen with Master Chefs.” Note PBS provides proper attribution for the recipe, citing both “Julia’s Kitchen with Master Chefs” and Georges Vongerichten who made the dish for Julia Child.
Source: PBS.org
However, just because PBS provides credit for the recipe, it doesn’t leave them off the hook for the image. What’s interesting here is there’s no attribution for the photo. So what’s the deal? It could be their own image, but it’s also quite possible they’re using a stock photo.
Using a stock photo site for images isn’t an uncommon practice. And there are plenty of sites out there that offer free and legal images for your blogs and websites. With a paid subscription, oftentimes, you can use the photos without including attribution (e.g. Thinkstock). But always err on the side of caution and double-check for potential stipulations.
Now, what would have happened if the image was originally taken by Julia Child? In an ideal world, we would email her, get permission, and be on our merry way. But she’s deceased. Uh-oh. In this case, you would defer to the Copyright Clearance Center. Oftentimes they can grant instant authorization. This is also helpful for when you’re not sure where the image originated.
2. Fair Use
Sometimes your image may fall under Fair Use, which means you don’t have to ask for permission. Typically, anything that is considered criticism, commentary, educational, or news-related will qualify.
Here are four factors to determine if your image falls within the realm of Fair Use:
- Purpose. Images that are noncommercial and nonprofit educational are fair game. And if you plan to transform the image (e.g. transformative use), even better. By adding something new, you’re usually in the clear.
- Originality. Authors of unpublished and more creative works tend to be off-limits. Steer clear of using their images.
- Amount. How much of the copyrighted material you plan to use will determine if it's considered Fair Use. The more you use, the less it will be fair. For instance, let’s say you plan to create a GIF featuring 95 out of 100 movie scenes. Here, you’re going to need permission.
- Value. If unregulated use could potentially harm the market for the original, expect to be denied Fair Use.
Typically GIFs/memes fall within the realm of Fair Use because they’re either educational or only use a snippet of the original. It’s both educational and only a portion of the original video. Where Fair Use gets murky is when you use other people’s photographs because it’s 100% of the original unlike a five-second clip from a TV show. There’s also the issue of devaluing the image, which happens when an image is used for less than savory reasons. After all, you might not want your creatives to be used in support of drug use. In scenarios like these, it’s best to stick to copyright rules, not Fair Use.
What Happens When You Violate Fair Use
So what happens when you use a GIF that isn’t Fair Use compliant? Sometimes you get kicked off of Twitter like Deadspin and SB Nation did.
Using NFL footage, the two created GIFs or Vines and posted them on Twitter. But the NFL wasn’t feeling the GIFs, and called foul, claiming the two media companies crossed the line from Fair Use into copyright infringement.
Source: Neimanlab.org
Technically according to Fair Use, Deadspin and SB Nation transformed the original footage. But in the eyes of the NFL, they didn’t change it enough. Fair Use is largely open to interpretation. And depending on how strict someone wants to be, it can be hard to assert Fair Use rights.
If you don’t feel like battling, play it safe and stick to Creative Commons (remember to include attribution) or use a stock photo site.
Copyright Proposalmr. Mac's Virtual Existence Key
3. Social Media Sharing Rules
Sharing images on social media is a tricky one, and Facebook actually has a whole section devoted to Copyright FAQ under their Help Center. Here are some responses you’ll want to pay attention to:
- Always Get Permission. When in doubt (or unable to get permission) -- don’t post. And if you’ve already posted, remove it promptly.
- Remember You Don’t Own that Film. Just because you recorded something (concert, show, sporting event) doesn’t make it your own (e.g. Deadspin and SB Nation NFL GIF). Always get permission before posting.
- A Photo of You Doesn’t Equal Ownership. Did your friend take a picture of you and later turn it into a meme? If someone takes a photo of you, and you don’t like it, tough luck. You don’t own it -- the photographer does.
Meanwhile Instagram’s sharing rules defer to standard copyright laws as outlined under their Basic Terms and Rights section. And for Twitter, make sure that if you decide to republish another Twitter user’s photos, you use Twitter’s embed tool.
Fair Use
With regards to Fair Use, when you choose to share your own original Facebook content/images (e.g. selfies, quotes, pics of food, etc.) publicly on a platform like Facebook, Fair Use becomes fuzzy. Since it’s considered public, that falls under Fair Use should another person on and/or outside of Facebook decide to use your image, which they can without repercussions. However, if your privacy settings are set to private, and someone uses your image, then they’re violating copyright laws.
So, if you’re looking for images to share (or use) without a care in the world, public images on Facebook are a great source. Just remember posting images publicly can potentially relinquish your copyright privileges. So don’t post anything that you wouldn’t want to lose the rights to.
4. Getty Image Rules
Remember: the problem isn’t the meme itself, but the image. (click to tweet) German Blogger -- Geeksisters -- knows this all too well. They used the meme “Socially Awkward Penguin” on their site and ended up receiving a letter from Getty Images demanding payment.
The penguin used is actually a National Geographic photo taken by photographer George F. Mobley and available for licensing on Getty.
Here, this case was particularly expensive, costing Geeksisters $785.40 in back license fees. Infringers are responsible for paying the copyrighter’s lost profits and licensing fee, which are not as high as what Getty demands. Getty usually ups the ante and includes their legal court fees, inflating the price. In fact, Getty demand letters are often referred to as “extortion letters.”
So lesson to be learned: if Geeksisters had just asked permission from Getty, the whole expensive episode could have been avoided.
Copyright Proposalmr. Mac's Virtual Existence Meaning
Don’t let copyright rules suck the fun out of using images in your content. Stay compliant, and simply avoid trouble in the first place. Know your DMCA and Fair Use rules, and when in doubt, avoid using the Socially Awkward Penguin.