IBM wants to cool data centers with their own waste heat | ExtremeTech

To take one calorie of heat out of a hot classroom in the summertime, or to add a calorie to a cold space in the winter, Ball State University’s boilers, all from the middle of the last century, have to burn one calorie of coal. But in a few months, the university’s heating and cooling system will become seven times more efficient by dumping heat or gathering it, depending on the season, from the dirt around six feet under the campus.

It seems that universities are competing more and more these days in the efficiency of heating and cooling. New York University recently unveiled a heating and cooling system that it says is 90 percent efficient. Ball State, in Muncie, Ind., says its technology – called a ground source heat pump – is not new, but that its system will soon be the largest installation of its kind in the country, if not the world.

As with a conventional air conditioning or heating system, water is heated in winter or chilled in summer and moved through pipes that have room air blowing over them. Yet the heart of the technology is machinery that can transfer heat in either direction.

In the summer, it can take heat out of the piping that runs to the room air and put it in a separate water loop that can be sent to a cooling tower. In winter it can draw heat from a separate loop and add it to the piping for room air.

The key to the system is a series of pipes buried below the frost line, which in Indiana means about six feet under the ground. In the summer, water carrying heat from the air conditioning system can give off that unwanted energy to the soil, which is at 55 degrees. This expends considerably less energy than giving it off to the warm, muggy air. In the winter, it can pull out water at 55 degrees and extract heat from it to warm the rooms.

‘When you’re heating or cooling, everything is about transferring energy,” said James W. Lowe, the director of engineering, construction and operation at Ball State, where he oversees the heating and cooling of some 5.5 million square feet.

The system will eliminate almost all of the university’s $3 million annual bill for fuel but will take about $1 million a year in electricity to run.

The installation, which will take several years, will cost $75 million to $80 million, Mr. Lowe said.

That would seem to imply a payback time of about 40 years. But two of the university’s boilers date from 1940 and another two from 1955, and all are due for replacement. The university priced out new boilers, which could have burned coal but also up to 30 percent wood or other biomass, but those would have cost $65 million to $70 million, Mr. Lowe said. So the additional cost involved in cycling energy into and out of the ground is at most $15 million, he said.

models feet after fashion week

Marc Jacobs Glued Models’ Feet Into Their Shoes at the …

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Meet the ‘Toe Whisperer’ Who Fixes Models’ NYFW Feet … Model Meghan Collison said her heels from the Chanel resort show were so damaging to her feet, she couldn’t wear MOCCASINS for a week. … After sitting front-row at Fashion Week for years and undoubtedly witnessing …

This Is the Bruised and Battered Foot of a Runway Model at … Meet the ‘Toe Whisperer’ Who Fixes Models‘ NYFW FeetFashion Week, he says, is one of his busiest time of year. … is comfortable from the moment its on your foot, and not relying on the shoe “to stretch after a few wears.”.

Models Feet- Model Feet At Fashion Week – Refinery29 This is the state it was in on the last day of Fashion Week in Paris, as she walked the Louis Vuitton show. After wearing probably more than a …

Mangled, Mashed and Mutilated: The Fate of Models’ Feet … Have you seen what a model’s feet look like after Fashion Week? Check out this horrifying pic of a Fashion Week model’s feet.

Marc Jacobs reveals how he GLUES shoes onto models … Fashion month is a mad whirlwind of collections where we see Anna … finally–the actual shows–a model’s foot takes one heck of a beating.

Battered, bruised and swollen: After a month of Fashion … His spectacles always close Paris Fashion Week, so there is added pressure to … of a month of fashion shows in New York and London too, the modelsfeet are …. Nick Cannon left fuming after producer Stevie J boasts about …


Happy feet: a step-by-step guide to hotfooting it through December

‘Tis the season to buy a totally extravagant pair of shoes so -forgetting your bank balance – treat your feet to a pair of Dolce & Gabbana’s crystal- and jewel-studded court shoes. Yes, they’re totally excessive; no, they won’t go with everything; and yes, you’ll probably regret your decision when debt collectors disappear with your Mac Air next spring. But frankly, who cares? It’s Christmas and your feet look TOTES AMAZE! (£945,

2. Marvel at Manolos

While the idea that you can judge the comfort of a pair of shoes by their price tag is as far-fetched as the tooth fairy, I am a believer in the magic of Manolo Blahnik. The cobbler king is an undoubted genius when it comes to properly covetable heels that are comfortable too. Of course, you’ll need a wad of cash (ask the tooth fairy?) in order to get your hands on a pair. (£485,

3. Covet colour

Now, I love navy blue as much as the next fashion editor but COME ON, it’s Christmas and high time we injected our personal shoe offering with a punch of colour. A simple pair of ruby red courts (opt for a heel that’s four inches or less) will work wonders on your favourite (navy) sweater, and as an added bonus they look rather swish with grey too. (£278,

4. Get in training

If you don’t wear a pair of trainers to at least one evening engagement this festive season, you’re not half as smart as I thought you were. After all, what could be cooler, more practical and frankly more London than down-staging Kelly from accounts and her red corseted ensemble by wearing a slouchy trouser suit and a pair of skater shoes to your Christmas booze-up? These sequin skaters from Saint Laurent are something special. (£440,

5. Find a middle ground

Changing up into your heels after a hard day in the office might sound like a glamorous pastime but, in truth, there is nothing less elegant than the sight of you, shoeless and delving into your overspill bag in the alley adjacent to The Red Lion. Avoid this sorry scene by choosing a mid-height heel that allows you to make it from morning Tube ride to midnight Addison Lee journey with ease. (£29.99,

6. Wild things

If a leopardprint dress says you’re the life and soul of the party, a leopardprint shoe merely hints that you might be (a much cooler feat). These snakeskin-effect sandals from Topshop are among our favourites. Wear them with a tux and classic white T-shirt. (£35,

7. Wear socks

As every self-respecting fashion assistant and kookily dressed blogger on Earth will happily confirm, there is nothing weird about wearing socks with your favourite dancing shoes. A word of warning, though – this is not a look for everyone. For the chicest way to work this trend, team black ankle socks (a fine-knit pair is essential) with a mid-length skirt and classic courts.

8. Don’t fear the flat

Stumbling through the tunnels of Old Street station in six-inch stilettos is neither funny nor smart, so leave the neck-breakers at home. A well-chosen pair of flats – see Russell & Bromley’s festive slippers (£195) – look gorgeous with beautifully cut black trousers and super-cute with a knee-length skirt and a jolly sweater. (

9. Life in plastic, it’s fantastic

While there is little (outside of Soho) that’s festive about PVC, these Perspex courts by shoe god Gianvito Rossi are topping our Santa list. A wholly flattering choice because they succeed in making the most unsightly feet look slimmer – these bad boys are a clear-cut contender for shoe of the year. (£470,

10. Do your homework

In December, nights on the sofa are a precious thing. Make the most of yours by allowing your poor throbbing feet the R&R they desperately deserve. A regular tea-tree or lavender-oil soak will ensure a smooth entry into your party shoes, while a hydrating treat is always a good idea. I swear by Margaret Dabbs Intensive Treatment Foot Oil. (£22,

Hitting a fashion show? Crazy heels required

It’s a blustery day – February tends to be that way in New York – and Marian Kihogo, a fashion stylist and blogger from London, is dashing from one runway show to another, from the tents at Lincoln Center to studios and galleries scattered around Manhattan.

As she strides by on her ‘architectural heels’ by Nicholas Kirkwood for Peter Pilotto, the heels hollowed out for artistic effect, this reporter dares to suggest she might be more comfortable in running shoes.

She laughs. ‘Running shoes! That would be fashion suicide. I think the fashion powers-that-be would stone me!’

An exaggeration? Maybe just a bit. Kihogo is merely giving a colorful rendition of an unspoken rule at Fashion Week: It’s all about the shoes. And we’re not talking about the models. We’re talking about the audience.

Never mind the snow, rain or sleet. Never mind the subway steps or those dashes for a cab. Never mind the long hours on one’s feet. Most Fashion Week regulars wouldn’t be caught dead without a pair of statement heels.

It’s all a little intimidating for the uninitiated, who may find themselves panicking the first time they sit in the front row of a runway show. For us, the command, ‘Uncross your legs!’ induces something akin to terror.

That’s what the pack of photographers at the foot of the runway calls out to ensure their camera shots won’t be ruined by a dangling foot. But it’s also the moment that all eyes shift downward, and suddenly one’s feet feel naked.

Scratch that. Bare feet would actually be better than a scruffy pair of booties with worn-down heels and cracked toes. (Sorry Aerosoles, they were lovely six years ago when I bought them.) Or, the Land’s End children’s rain boots your 11-year-old has grown out of, but still fit you.

Now, we don’t mean to exaggerate. Sometimes you can find a pair of sneakers in the front row. Usually they’re studded, perhaps part of an overall grunge look belonging to some handsome and hip young man, or to a woman on crutches. Although, last year, this reporter witnessed a woman on crutches at a fashion show, the injured foot in an orthopedic boot, the other in … wait for it … a stiletto.

‘Wow,’ says an admiring Pamela Pekerman, who’s covering fashion for AfterBuzz TV, hearing the anecdote. ‘That’s going for it.’

Pekerman thinks she’s found a happy medium – a pair of Brian Atwood heels in lavender that she bought on sale at Saks Fifth Avenue and swears are comfortable. ‘I could run for you right now, I really could,’ she says. We’ll take her word for it.

‘I’ve seen a lot of crazy shoes here that belong in the circus,’ Pekerman says. ‘People are wobbling around. But some girls, they just want to stick out.’ As she speaks, one such woman teeters behind her, stepping rhythmically but gingerly across Lincoln Center Plaza and over to 65th Street, where we pray the traffic light gives her enough time to cross.

Pekerman does have one little secret – foot petals, basically soft pads you sneak into your shoes to provide a little cushioning. But some women, says one fashion insider, have another, darker secret.

‘I know from experience that there are plenty of flats tucked away in tote bags,’ says Ken Downing, fashion director for Neiman Marcus, with a wink. ‘And sitting in the back seats of sedans.’ Let’s face it, says Downing, ‘We all know what a beating Fashion Week can be on the feet.’

Downing scans the front row of the Cushnie et Ochs runway show, where we’re sitting. There’s barely a flat in sight, but he points out a colleague, Roopal Patel, who’s wearing black high-top Louboutin sneakers with silver studs. And she’s on crutches. She injured her knee two weeks ago.

‘It sent me into a panic – what was I going to wear to Fashion Week?’ says Patel, fashion director of the online retail site ‘Ninety percent of my closet is heels. Ballerina flats? Not my style.’ But a colleague suggested the Louboutins – ‘the perfect solution.’ She’ll be wearing them to the upcoming shows in London, Milan and Paris.

Downing, of Nieman Marcus, says there’s a good reason for all the dressing up. After all, the fashionistas who form most of the audience at runway shows – buyers, stylists, major clients and of course celebrities – have rather a duty to, well, take one for the team. (Easy for him to say.) ‘Listen,’ Downing says, ‘footwear is a true indicator of style, and where fashion is, and where it’s going. We’re an industry of image. So it’s important that we do our part.’

And it’s not a burden, offers Patel – it’s a pleasure. ‘Fashion Week is like going back to school – you want to pull out your new clothes and new shoes and show everyone,’ she says. Even better: ‘You’re not the only one teetering on 140-milimeter gold platform heels. Everyone is. It’s wonderful!’

At a packed Fashion Week party a few nights earlier, Clement Z., as this stylist from Shanghai calls himself, is chatting with friends. Your eyes gravitate down to his feet. How can they not? They’re brilliantly jeweled. He’s wearing what he calls his Aladdin shoes.

‘They’re Armani, from the women’s collection,’ he says. ‘I can do that because I’m just a size 39.’ (That’s a size 8 for Americans.) Kudos to Clement – they look great. And he knows it.

‘Shoes are the most important part of the whole outfit,’ he says. ‘I tell my clients: Buy the most basic outfits, but follow the trends of shoes every season.’

Kyle Anderson couldn’t agree more. We catch up with the accessories director for Marie Claire at the Phillip Lim show, an especially hip event peopled by indie musicians. He’s wearing an extremely colorful pair from Prada. ‘All accessories, including shoes, are a million times more important than clothes,’ he says. ‘You can buy simple clothes, but you can’t fake accessories.’

On a frigid Sunday morning, on line outside the Catherine Malandrino show with the wind whipping off the Hudson River, is a woman who’s definitely NOT faking the accessories.

A fashion outsider might look at the feet of Laetitia Chaix and think she is trying to emulate Chewbacca from ‘Star Wars.’ Yes, the Wookiee. That person would be wrong.

Chaix is actually wearing seriously chic Chanel fur boots. They would not be out of place at the South Pole (or on the planet Alderaan.) ‘I call them my grizzly boots,’ she says. ‘They were perfect for today. I don’t get to wear them too much, because they are so hot.’

In fact, muses Chaix, the boots are so hot, ‘one could wear them today with only a little bathing suit.’

Now, THAT’S going for it.

2015 June | Wi-Fi Blog | Site Survey, Planning, Troubleshooting

By Dean Zaremba

For nearly 10 years, I have worked on many Wi-Fi projects with my friend George Stefanick (@wirelesssguru). Just a few weeks ago, we decided to start a Wi-Fi consulting company – Free Space (@freespacewifi). We figured, at worst it would be a paid way to travel, drink beer, play poker and work on some Wi-Fi.

As we complete projects, I plan on blogging about different topics that we discover in the field. Today’s topic is a hypothesis I develop during our project last week. I would like help from the Wi-Fi community to help prove or disprove. For years, when doing surveys with software mapping tools, I rarely, let the tool place the APs for me, because the software seemed to be wrong frequently.

Our project last week was a survey for remediation and expansion, so we did a passive survey of the multi-story property using Ekahau ESS 8.0. After surveying the initial floor, ESS placed 28 APs on the floor I was surveying. I immediately cleared the APs and chalked it up to my previous notion that these tools just cannot place APs correctly. But then I surveyed two floors above and two floors below, and I noticed something interesting. ESS replaced the APs, and on the original floor, ESS was now only placing 4 APs. While I was surveying, George was using his Fluke Air Check and confirmed exactly 4 APs existed on this original floor. So I thought, maybe ESS is better at placing APs then I thought, once I gave ESS a full picture and data points all around the original floor, it nailed the location of the 4 APs within 10 – 12 feet. Enter Hypothesis part 1.

Hypothesis Part 1: The more survey points you give ESS in all directions, the more accurate it could place APs.

However, even if this is true, I am not sure how much value it adds to the Wi-Fi engineer, since you typically know where your APs are located. But then, after surveying the rest of the property, I noticed something else. There was a large open area that went up all 15+ floors at this property. There was an AP on the ground floor, but within the open area. Even though I had a complete survey with tons of data points, ESS put this AP on the 11 th floor! I thought, so much for the first part of my hypothesis. I mean, I have tons of survey data in the file, how can ESS be so wrong? So, I isolated that AP in ESS and checked out its coverage area. It was blasting up the Atrium and giving RSSI in the 60s, all the way to the 18 th floor! So, maybe putting on the 11 th floor was not such a crazy thing. Enter part 2 of my hypothesis.

Hypothesis Part 2: If you give ESS proper data points in all directions around an AP, and ESS does not accurately place the AP, then it is a bad spot for an AP.

Now, this part was very intriguing to me. Consider, that If an AP in the field is not propagating according to intended design, then ESS is going to get is wrong. Is that really ESS’s fault? Or is it poor placement of the AP that is causing it to propagate in an undesired fashion?

We all know placing and AP in an open air Atrium is a bad idea, and in this case, ESS confirmed it. But what about other locations that are not as clear-cut. What if a wall has metal in it that you did not know about? What if any number of issues causes the signal to propagate differently that your predictive model? Could ESS tell you there was an issue when you do your validation survey, simply by getting the placement wrong? Should all good AP placements produce predictable propagation where ESS knows right where that AP is located? Is the accuracy of the ESS placement directly and linearly related to quality of the AP placement? If any or all of these questions held true, it could be very valuable design information for the Wi-Fi professional.

So, I did a little more investigating. On this same project, there was another AP on the roof of a building covering an outdoor bar area. The building was one story above the bar, and the AP was on the roof. Additionally, it was shooting over a large landscaped area of about 50 feet. So the AP was both 50 feet away and 30 feet in the air and thus about 60 feet line of site to the desired coverage area. The antenna was 120 degree sectional, pointing at the coverage area. Where did ESS put the AP? 30 feet on the opposite side of the bar, 90 feet away from actual AP location, as if it was on the ground level, just on the other side of the bar, and was a directional antenna in the exact opposite direction. ESS again confirmed that the placement of this AP was not really very good. This information supported Hypothesis part 2. (We now had two APs that we are going to move as part of the remediation redesign).

My third piece of data was collected after I arrived home. Yesterday, I went to the local soccer field. Placed a test AP in the middle and walked around the AP. The only thing affecting the propagation was Free Space loss and thus ESS got the AP location accurate to within 2 feet. This information also supports Hypothesis part 2.

In conclusion, I cannot make any conclusions at this time off of just 3 AP locations. But I think this knowledge can be valuable in the Wi-Fi community. So I ask you to check your old ESS project files, keep an eye out on your new projects and post your data here.

As a community, let’s find out if this is a new method to use ESS to help improve new designs and remediate poor designs.

Dean Zaremba

George Stefanick

Custom Designed Shoes for your Wide Width or Larger Foot? Shoes of Prey | The Curvy Fashionista

Imagine if you could design your own shoes. Up to a size 15 and in your desired width.

‘Your design. Your size. Your perfect shoes.’

Because after all, whether plus size or tall, sometimes finding a shoe that is big enough, wide enough and FASHIONABLE for your feet is a task…

However, there is an option.

Have you heard of Shoes of Prey?

Since 2009 and based out of Australia, Shoes of Prey has been making flats, heels, wedges, sandals and BEYOND, ‘because they’re designed by you, for you.’

Using a 3D designer, you choose the shape, color and height of your shoes. Then they custom make them to your specifications, within four weeks, and ship them to you wherever you are in the world.

The result?

Your OWN pair of designer shoes, tailored specifically to your style, taste, and comfort level! You’ll never see the same pair on anyone else! How about that?

I know you may be asking about YOUR wide width feet and the fit, well, check this out:

‘The best way for you to describe the width of your feet to us is by in one of the two following formats. The first option is by telling us if you have wide or extra wide feet. The other option is to tell us your foot length (i.e. I am a size 39 length) and your width (i.e. I am a size 40 width). We don’t use the alphabetical system because it is much more complex than the above two options.

We can’t promise to get sizing right for you first time, but we’ll certainly do our best and so far we’ve been right about 70% of the time in our first attempt. If your shoes don’t fit we’ll remake or alter them for you free of charge as per our returns policy. We guarantee you’ll love the shoes or your money back (even if we’ve made the shoes wider for you).’


What do you have to lose? All the images in this post are ones that I played in and designed in my personal Shoes of Prey closet! LOL

Start designing your custom heels, flats, or sandals now from Shoes of Prey here!

Have you shopped from Shoes of Prey Before? Let us know! Would you custom design your own shoes? WHAT are YOUR dream shoes?