I've seen many glass sculptures made at RenFaires before, but never like this. All sculpted from one gather of molten glass without reheating. Wow!
I've seen many glass sculptures made at RenFaires before, but never like this. All sculpted from one gather of molten glass without reheating. Wow!
Two fascinating video clips from this site feature Adam Savage and Jamie Hyneman presenting some modern applications of glass: optical fibers, flexible "willow" glass and super-strong "gorilla" glass.
Can we finally put to rest the insane myth that these Jihadi groups are only interested in Israel giving up land? It's always been a desire to murder Jews, Christians, Hindus, and everybody else, including non-radical Muslims (and even radicals who belong to other organizations.)
I hope this defense fails miserably. I've never consumed pot, but I know enough to know that it doesn't make people paranoid and violent. There are other drugs that can do that, but (as the article says further down), Mr. Kirk had none of those drugs in his system.
This guy planned to murder his wife for the insurance money. He went and ate a bit of pot candy to use it as an excuse. I hope the court throws the book at him. I don't think Colorado has the death penalty, but if they do, he should get it.
Watching lots of home improvement shows, I've heard these terms thrown about and it's never been quite clear what they mean. Maybe I'm the only non-glazier who cares, but it was bugging me. This article explains the terms very well. Click through to the original article to see a bit more content, including illustrations of each.
Here's Verizon's page describing their pricing. Until the promo expires (no date is mentioned at this time), the $80 data plan is increasing from 6GB to 10GB and the $100 data plan is increasing from 10GB to 15GB. This is not just for new customers - current "MORE Everything" customers can also take advantage by simply changing their data plan.
I just did it for my account. I was paying $90/mo for 8GB. With this new pricing, I switched our contract to $80 for 10GB. It isn't every day that you get to pay less and get more data. $80/mo (plus the $120/mo line-access charges) is still a lot to pay, but it's better than paying $10 more for less data. Here's to hoping that the rivalry between Verizon and AT&T continues to drive prices lower.
Just a little something to share with your left-wing friends who believe the Hamas propaganda that the mainstream media reports as fact. Be sure to click through the various links to others who have added commentary of their own.
Ars Technica has an incredibly detailed (and long - 25 screens) article all about the latest version of Mac OS X. There's lots of interesting information in here for everybody, from system programmers to power users, to Mac afficionados, to people who just like to admire and criticize industrial design.
I'm sure you've heard about the above news already. For more information on this, TechCrunch wrote a great article all about CurrentC, how it works and why it even exists.
In Googling for the definitions, I found that it is very hard to find definitions for most of these. As a service to my readers, here are all the line items from my contract, and the best explanation I've found so far for them. Some come from Verizon or from user-forum discussions I ran across. Some are based on my own intuition and understanding of wireless technology.
Corrections are welcome and will help to make the list more complete. I don't promise that it's all correct, but I hope people with specific knowledge will be able to help me improve it and make it correct.
Updated on June 4, 2015, based on reader comments. Thanks much!
I have never installed Digital Editions, but you can be certain I won't ever install it in the future.
Please click through to the article. There are some followup posts. Adobe claims you agreed to all this when you clicked on the license agreement that everybody knows you didn't read. They also claim they are only phoning home about documents opened in Digital Editions, even though it's been demonstrated that such a claim is a lie.
Ever notice how the most expensive hotels charge the most for internet access?
For those who don't know, the Marrott Gaylord chain of hotels is incredibly expensive. A "cheap" room is several hundred dollars per night. And then they have the gall to charge an additional $250-1000 for internet access? And then deliberately jamming anybody who dares to try and access the internet through their own means? I'm surprised they didn't decide to jam the entire cell phone spectrum and tell people to use their room phones at $10/minute.
It's sleazy scumbag policies like this which convinced me (many many years ago) to avoid all those expensive "prestigious" hotels. When I travel, I stay at cheap places like Holiday Inn, where my room rate is 75% less expensive and where they include internet access and breakfast at no extra charge.
These self-described luxury hotels can keep their designer soaps pillow-chocolate. It's not worth paying hundreds of dollars extra per night and losing amenities that I consider critical when traveling (internet and breakfast.) Maybe they'll learn someday, but I doubt it. They're happy catering to business travelers who will just bill everything to the company without even thinking about the cost.
The above graphic is the result of running Comcast's speed test. (I'm paying for 25/5 service - which is what I'm getting.) Now that I've got my router straightened out, it's pretty nice. Interesting how IPv6 is about 2.7Mbps slower than IPv4.
Click through to the full article to see one insanely complicated approach to subtraction that kids are forced to memorize.
And this is a great example of why education should not be controlled by faceless Washington bureaucrats. Our schools are being forced to teach according to academic theories and experiments, without regard to whether or not the children will actually learn anything.
I'm very glad that Virginia (for the moment anyway) is not one of the 43 states participating in this brain-dead Common Core curriculum. But I'm sure Washington will find some way to force their will on us. They just need to shred another few pages of the Constitution before they decide we have no rights whatsoever.
I will never experience this first hand. Something about not having a spare $19,000 lying around, or if I do, I'd rather do something other than buy a round-trip plane ticket with it. But wow! That is the most luxurious plane ride ever. First class is just so pedestrian in comparison!
I just ran across this article.
Apparently, the cable modem that Comcast ships to business internet customers has a "Smart Packet Detection" feature that has a nasty habit of making connections go flaky from time to time. According to one report I read, it was actually causing the router to drop every other packet, which will obviously make your user experience less than ideal.
I'm not sure what this feature is supposed to do, and Googling reveals nothing but recommendations that you turn it off. But if turning it off fixes your problems, then I'd recommend doing it. Comcast's support staff don't always know about this, so they might not tell you to try this unless you're persistent enough to get your call escalated to high-level techs.
It's not just Comcast business customers. As some of you may know, I recently (in July) switched to Comcast internet as a result of moving to a location that has no other high speed internet service. I was seeing all kinds of flaky behavior, typically manifesting as web pages that would hang or take forever to load. The netstat command would show hundreds of connections in the "SYN_WAIT" state, meaning the TCP stack is waiting for connections to be established. This is very similar to the linked article.
After re-reading the article today, I decided to visit the firewall settings on my modem/router (a Zoom model 5352). There was no "smart packet detection" setting, but there were settings for "port scan detection" and "IP flood detection". According to the manual, these settings look for and block that activity on both the WAN (internet) side of the router and the LAN side.
Of course, when you open 30 tabs at once in a web browser (or just one site that has a lot of embedded content), it results in hundreds of TCP connections originating from a single IP address on the LAN. The router is clearly misinterpreting this as an IP flood attack, and it blocks them. When I disabled these features, I once again got the performance I have come to expect from high speed internet.
I sent e-mail to Zoom letting them know about this. I think they need to update their packet-flood detection algorithms. I also think they should have separate configurations for LAN-side and WAN-side detection. I would like to detect and block scans and floods that originate from the internet, but not from computers on my LAN.
I don't drink anything close to the amount of beer that would be necessary for such a gadget to make sense, but the geek in me would love to play with one. According to the description, it acts as a replacement for the faucet on a traditional tap system. So it should (in theory) be easy for any serious beer-drinking geek to install as a part of a bar or kegerator.
Your show has got to be pretty awful to be canceled before the first episode finishes airing, and for one network affiliate to not even allow it to run beyond the first commercial break.
Of course, having read about this, I now want to see if there's some way I could see it. Although offensive for 1969, I suspect it would be just fine for today's TV audience (on cable and home video if not broadcast TV). Of course, it might not be funny either, but I'd love to see it to find out.
None for me, thank you. It's an amusing looking novelty, but it doesn't look appetizing in any way.
They've been selling black buns for two years now. I assume successfully, if they're one-upping it with black ketchup and cheese now. But I fail to see why people would find it attractive.
I guess the Japanese are a bit different from the rest of the world....
This may be the first time I've ever shared something discovered via clicking on a banner ad, but this looks really awesome.
I've been a big fan of Keurig brewers for a long time, starting when my employer got a first-generation model back when they were only available as rentals from coffee-supply companies.
The product page seems a bit short on details, but I like the idea that they now support extra large "K-Carafe" packs to brew a whole pot at once, and while keeping the system compatible with existing K-Cups. One of the big problems they had with their previous next-generation "Vue" system was that it was incompatible with K-Cups, forcing upgraders to discard the coffee you already purchased.
I'm not going to be getting rid of the unit I've got right now, but when the time comes to replace it, this looks like a really good choice.
And the school appears to be standing by their brutality. The girl's mother tried to remove her from the school, to enroll her elsewhere, and the school administration threatened to arrest her if she didn't leave the building immediately. Quoting the original article:
Perez has been suspended until Friday, and her mother says they are still having problems with school staff.
"Yesterday I tried to take her out of this school, looking for another school, but police came in there and kicked me out," Santos said. She said they threatened to take her to jail if she did not leave.
So, is anyone going to file criminal charges here? It seems to me that this assistant principal and the three rent-a-cops are all guilty of felony assault and battery. Will anyone press charges? Will the national media pick up on this? Will the attorney general decide to get involved when a real case of police brutality against a child occurs?
To start, here's Homer Simpson:
So, all you gardeners. You better not remove those weeds or try to fight the kudzu or try to exterminate that colony of fire ants. If you do, you're really projecting racist hatred and bigotry and the BBC will tell the world just what a horrible disgusting person you really are. Don't deny it - we all know that denial constitutes proof.
h/t to Mallard Fillmore:
Is it just me or is it completely insane to go searching for high-risk "alternative" investments based on a free article on a web page? If you're not already enough of an expert to know about these ideas, then you don't know enough to understand the risks involved.
These kinds of investments might be fun speculation, but you'd have to be crazy to base some kind of money-making strategy on them if you've never heard of them before reading this article.
To quote Homer Simpson: After years of disappointment with get-rich-quick schemes, I know I’m gonna get rich with this scheme ... and quick!
Notice how although the article talks about "budget crunches that slow the pace of replacement", they made a point of not mentioning why the budgets are so tight.
Maybe there would be plenty of money if they weren't flushing all their tax revenues down the toilet on providing unnecessary services to a population that can't stop begging for more, giving the full benefit of our entitlement programs to people living in the country illegally, regulating low-cost contractors out of business, and generally spending hundreds of billions of dollars on things far less important than making sure the water mains are kept in good repair.
For TV service, we subscribed to Dish Network. Mostly because the previous owners used it and the dish was already on the roof. That installed quickly and after three weeks I’m quite happy with it. But that’s for TV only. Dish does offer satellite internet service, but the latency inherent in a geostationary satellite link (over half-second round-trip packet times) makes it useless for interactive services like remote-logins and VoIP. Since both my wife and I require interactive services (distance learning, telecommuting, FaceTime, etc.) satellite internet is a no-go.
Which leaves Comcast internet as the only possibility for high bandwidth and low latency. We subscribed to their 25Mbps internet-only service. Due to the fact that we were involved with moving and closing on two houses (buying the new home and selling the old one), I was in no state of mind to research and buy a modem, I elected to rent Comcast’s modem, at least for the first few months, just to keep it simple.
...struck a chord. It reminds me of real-world practice that I faced several years ago.
At that time, my employer's Federal sales group worked fairly closely with engineering. They would frequently request features - very specific micro-managed features. Sometimes these features didn't make sense - there were better and simpler ways to do the same thing.
As good engineers, we would ask them "what task are you trying to accomplish with this feature?" figuring that if we know what they were trying to do, we might be able to suggest a better or more efficient or at least standards-compliant way to solve their problem. The answer we always got back was "sorry, that's classified."
Fortunately, our sales people were fairly knowledgeable, so we could discuss the topic at length with them (never mentioning what the end customer actually wants to do, of course) and the sales people could help determine if an alternative feature would be better, but it was still a very frustrating way to work. Even when the feature is developed and tested, it's frustrating to know that you can't test it against the customer's usage because you aren't allowed to know what that usage is. And when you get a bug report devoid of actual usage data, it's really hard to find and fix the bug.
I think Dilbert (in today's strip) has it easy!
To those who don't know me in real life, move along, nothing to see.
Kodomoroid and Otonaroid are female-looking robots with surprisingly convincing personalities. They don't walk and have some bugs (not surprising with tech this cutting-edge), but the result is very impressive.
The article also described, but didn't show a photo of Telenoid. Telenoid appears to be more of an experiment - it is designed to be only minimally humanoid, with a face that could be male or female, and small enough (and soft enough) to be huggable. Telenoid is primarily (I think) meant to be remotely operated as a telepresence device, not an actual independent robot.
The article also makes reference to Pepper a three-wheeled robot designed to read human emotion from tone of voice and facial expressions, and respond appropriately. Pepper was developed by Softbank (one of the biggest Japanese telecom companies) and will likely start selling for under ¥200,000 ($2,000). At that price, if the product works as advertised, I think we'll start seeing a lot of people buying them.
Now if they can develop one that will clean the house for me, it will be perfect.
So I lit a fire
Isn't it good
My comments, then as now, was that this is a terrible song. It tells the story of a guy who tries to crawl into bed with a girl, is refused, and he retaliates by burning he house down.
Most people I tell this to think that can't possibly be right. Such a sweet happy song can't possibly be describing a psychotic arsonist.
Well, I decided to Google for it today, and as it turns out, the lyrics are explained on the song's Wikipedia page. John started writing the lyrics as a cryptic way of describing an affair he was having. Then Paul finished it up, and thought it would be funny to end with him burning the house down:
... So she makes him sleep in the bath and then finally in the last verse I had this idea to set the Norwegian wood on fire as revenge, so we did it very tongue in cheek. She led him on, then said, "You'd better sleep in the bath." In our world the guy had to have some sort of revenge ... so it meant I burned the place down ....
I feel justified, amused, and a just a little disturbed by this revelation.
I wonder what's next. "Queens"? "Manhattan"? "Staten Island"?
Sadly, it's not just cartoon housewives. I've frequently been in the same situation. The rest of the family goes out shopping for a few hours and I take the time to complete a bunch of chores around the house. I finally finish and go stretch out with the TV and everybody returns home within a few minutes.
We went a day and a half without any connectivity and let me tell you, it sucked big-time. Some of the things we were unable to do without this:
Fortunately, it was an easy repair. The power supply for the ONT (the optical network terminal on the side of the house that terminates the fiber connection) had died. The tech replaced it in about 30 minutes and all was well, but I was unpleasantly surprised to discover how much our lives depend on high-speed internet these days.
Unfortunately, there's not a whole lot that can be done about it. Jen's college work and my financial activity simply can't be done without internet access. And her school work requires a high-speed connection because it involves multimedia and VoIP conference calls. And needless to say, telecommuting is out of the question without high-speed access (VPNs are painful and our corporate VoIP phone system is impossible on a slow connection.)
I suppose we could ditch the VZ-supplied DVR and go with a TiVo, which would boot up without internet access and allow us to play stored content, and we could use it (with an antenna) to get over-the-air broadcasts of local channels. I may have to think about this some more. And I think I need to get some good games loaded onto my Mac's hard drive!
On the other hand, it gave me plenty of time to catch up on my reading.
The judge upheld the ticket, with the argument that he was parked there more than 75 minutes and the signs said so, and he knew about the signs because he installed them.
IMO, the 75 minutes shouldn't start ticking until after the sign is installed because, like most places, you can't be ticketed for a parking violation where there is no sign.
This framegrab image of the White House website obtained by The Associated Press shows an oil and gas industry advertisement that got some prime online real estate for their ad pressing President Barack Obama on the Keystone XL pipeline on the White House’s official website. (AP Photo)
Read the full article here.
I started wondering how it is that fish don't crash into the side of the tank. After all, they have no binocular vision, and their brain can't possibly be big enough to learn about things like invisible barriers.
The fish aren't using their eyes to "see" the glass, but rather a special pressure-sensing system called the lateral line. This system is made up of sensory units called neuromasts, consisting of cells on the body surface that have a projecting hair encased in a gelatinous cap. When pressure waves in the water move the gelatinous caps and bend the hairs, the firing rate of nerve impulses sent to the brain by the neuromasts changes, enabling the fish to detect the waves.
Fish set up pressure waves as they move through the water, and are able to detect the reflection and distortion of these waves from objects and thereby avoid them. They are also able to detect the pressure waves of other fish.
That's really awesome. Who'd have thought that a silly comic would lead to learning such interesting trivia. Go read the rest of the article for more interesting related facts.
And just for kicks, here are my answers. No I'm not going to hunt down a bunch of quizzes. These are just the answers I would give if asked the questions. Make of that what you will.
Yahoo recently upgraded the "security" of their mail servers in an attempt to curb spam. Unfortunately, they decided to use a protocol that is still under development, has serious known problems, and they configured it for maximum paranoia. The result is that they reject nearly all mailing-list traffic (legitimate or otherwise) that comes from a Yahoo user, potentially crippling the lists themselves. (Except for lists hosted by Yahoo's own servers, of course.)
Of course, some of these are more wrong than others, but it is a good read.
Unfortunately, trying to come up with replacement icons for some of these (especially the floppy disk) that will be intuitive to novice users is not an easy task.
...Read more. (Including a photo)
The Hasselblad 500 sold over the weekend is described by Vienna auctioneers Galerie Westlicht as part of the equipment carried by the 1971 Apollo 15 mission -- and the only camera ever bought back from the moon.
I am a bit disappointed that NASA decided to sell it. This camera really belongs in the National Air & Space museum, or possibly in the Kennedy Space Center museum - alongside the other Apollo artifacts.
Lots of people in high places in Target should lose their jobs for this. It's one thing to be the victim of crime. It's quite another to pay big bucks for an outsourced security system and then deliberately ignore them when they tell you there's a massive attack in progress.
The results are not too surprising. Verizon has the best coverage, with AT&T not far behind. T-Mobile and Sprint cover most of the populated areas, but with what could be annoying gaps if you travel the countryside. For example, Oswego New York is has coverage by all four networks, but the surrounding towns (Wolcott, Fulton, etc.) have no T-Mobile or Sprint coverage, and some of the towns (like Sterling, where the Renaissance Festival is held) are only covered by Verizon.
Fortunately, I never installed this app. I access my GDrive entirely using the web interface.
Some notable quotes:
Unfortunately, there is no point to distributing music in 24-bit/192kHz format. Its playback fidelity is slightly inferior to 16/44.1 or 16/48, and it takes up 6 times the space.
Yes, this surprised me too. Unnecessary, I agree, but inferior?. As it turns out, inaudible ultrasonic content frequencies can cause intramodular distortion that may be audible unless you've got very high-end equipment that can cleanly reproduce it.
The concept is similar to how high/mid/low frequencies can interfere with each other, which is why most good amplifiers and speakers use separate discrete components (along with appropriate filters and crossovers) to process these ranges independently.
The article also talks about how 16 bits really is enough to capture the full dynamic range a human ear is capable of hearing:
16 bit linear PCM has a dynamic range of 96dB according to the most common definition, which calculates dynamic range as (6*bits)dB. Many believe that 16 bit audio cannot represent arbitrary sounds quieter than -96dB. This is incorrect.
With use of shaped dither, which moves quantization noise energy into frequencies where it's harder to hear, the effective dynamic range of 16 bit audio reaches 120dB in practice, more than fifteen times deeper than the 96dB claim.
120dB is greater than the difference between a mosquito somewhere in the same room and a jackhammer a foot away.... or the difference between a deserted 'soundproof' room and a sound loud enough to cause hearing damage in seconds.
And has so much range that any recording actually using it would be annoying to listen to in a normal room - I'd be constantly turning the volume up (to hear the quiet parts) and down (to avoid pain during the loud parts.) Just like I sometimes have to do when listening to music in the car or when trying to watch a movie while others are talking in the same room.
I would contend that 16-bits is more than sufficient, because audio that is comfortable to listen to in an uncontrolled environment should be compressed to less thaneven 96dB. (Although the high dynamic range is definitely welcome when I'm in a quiet room listening on good equipment.)
Finally, I want to quote a section on how loudness can impact preferences. I always knew that people tend to prefer louder sound, but I didn't realize how subtle the changes can be, and why you can't eliminate this factor from audio testing without specialized equipment:
The human ear can consciously discriminate amplitude differences of about 1dB, and experiments show subconscious awareness of amplitude differences under .2dB. Humans almost universally consider louder audio to sound better, and .2dB is enough to establish this preference. Any comparison that fails to carefully amplitude-match the choices will see the louder choice preferred, even if the amplitude difference is too small to consciously notice. Stereo salesmen have known this trick for a long time.
The professional testing standard is to match sources to within .1dB or better. This often requires use of an oscilloscope or signal analyzer. Guessing by turning the knobs until two sources sound about the same is not good enough.
Please read the complete article including the footnotes. There's a lot of great information in here.
If people want to switch to a new audio format that sounds better than the MP3s they have now, they would be best off by simply re-ripping their CDs into a lossless format like FLAC or Apple Lossless. By simply removing all compression artifacts, you will get audio that will sound great if your playback equipment is up to the task.
Yes, I'm aware of the irony of sharing this comic on my blog. Please click through so John Kovalic can get some ad revenue from it.
A double-blind study (from 2008) demonstrates (and to me, proves) that the nay-sayers are right and the audiophiles are wrong.
According to a remarkable new study, however, the failure of new audio formats — at least the ones that claim superiority thanks to higher sample rates — to succeed commercially may in reality be meaningless. The study basically says that (with apologies to Firesign Theatre) everything you, I, Moorer and everyone else know about how much better high-sample-rate audio sounds is wrong.
The study was published in this past September's Journal of the Audio Engineering Society under the title "Audibility of a CD-Standard A/D/A Loop Inserted Into High-Resolution Audio Playback."
It was designed to show whether real people, with good ears, can hear any differences between “high-resolution” audio and the 44.1kHz/16-bit CD standard. And the answer Moran and Meyer came up with, after hundreds of trials with dozens of subjects using four different top-tier systems playing a wide variety of music, is, “No, they can't.”
Vitamin fans, take note: An editorial in the journal Annals of Internal Medicine suggests that multivitamins provide no health benefit in the long-run, and in fact, "should be avoided." The authors of the piece, "Enough is Enough: Stop Wasting Money on Vitamin and Mineral Supplements," summarize the work of three review studies in the same journal, which together find no effect for vitamins on cardiovascular health, cancer risk, cognitive health, or mortality. The bottom line, at least to the authors, is clear: We should stop wasting our money on multivitamins, since there’s little evidence to their benefit, and some evidence to their detriment. But as always, others say they jury is still out on this one.
It does go on to say, however, that this is in the context of trying to prevent chronic conditions and extend life. If you don't get enough of something your diet (e.g. many women have iron deficiencies, and people who eat a lot of junk food may lack all kinds of vitamins and minerals), then you should take supplements to make up the difference, but that's a completely different scenario from the person taking large doses of vitamins in order to try and prevent cancer, for example.
Read the rest of the article for more details.
A bug in the software that powers a broad array of Webcams, IP surveillance cameras and baby monitors made by Chinese camera giant Foscam allows anyone with access to the device’s Internet address to view live and recorded video footage, KrebsOnSecurity has learned.All I can say is d'Oh!
The issue came to light on the company’s support forum after camera experts discovered that the Web interface for many Foscam cameras can be accessed simply by pressing "OK" in the dialog box when prompted for a username and password.
...With luck, these app developers will also optimize their apps to use less CPU, less battery and less bandwidth on the high-powered phones used in the US. In the developing world, these issues may be business-crushing problems, but they're really annoying everywhere else too.
if you want to make smartphone applications that work for most people (not just most Americans), you have to think slow. Smartphones and the Internet are booming in the developing world. ... But the mobile Internet in the developing world is a fundamentally different beast than the one we typically talk about. That includes everything from the devices people use to to the plans they purchase, and the networks they run them on.
The most common smartphone in the world is, according to Ericsson, the K-Touch W 619. It has a single core processor, and a 3.5-inch display with 480 x 320 resolution. When you hear about the next billion people going online, that’s the kind of device they’re going to use to do it. What’s more, they’re going to run that phone on networks where traffic moves at kilobytes per second, not megabytes. In Ethiopia, for example, only 23 percent of network traffic can hit download speeds of greater than 1 Mbps; a mere 4 percent can upload at that speed. For bandwidth-hogging apps, this poses multiple problems. The first is that they may just not work. When phones are constantly trying to suck or push data to a network, and encountering problems doing so, it also eats up battery life. That’s a much bigger problem than simply needing to recharge your iPhone twice a day.
It's an amusing (if somewhat tenuous) way of drawing an analogy between the world/politics of UNIX-like operating systems and Christianity.
In the early days, the UNIX faith spread underground among nests of true believers; but they evangelized their friends and neighbours and gradually it began to spread in strange communities. And with the spread came the great split. By the mid-1970s there were two main sects: AT&T UNIX, which we may liken unto the Roman Catholic Church, and BSD UNIX, which we may approximate to the Orthodox Churches. And then lo, there were many schisms.
It's not pretty, but it works. It must've been fun to design and build this.
The instructions I followed are available here.
I bought a battery and matching toolkit (two small screwdrivers, plastic pry-tool and two tiny Phillips-head screws to replace Apple's annoying pentalobe screws,) from iFixit for $30. It took about 10 minutes (not counting the time to sync and backup the phone) to complete this repair. Far better than sending it to Apple, who would charge $80 and hold on to the phone for a week.
All of our battery problems appear to have gone away, thanks to this relatively simple fix.