Showing posts with label DEV & DESIGN. Show all posts
Showing posts with label DEV & DESIGN. Show all posts

Saturday, June 27, 2015

What updates should Android developers focus on from Google I/O?

What updates should Android developers focus on from Google I/O?


In this video, Android Engineer Kris Pena picks out the most important pieces of information that came out of this year's Google I/Oconference.
She dissects all the changes to Android app permissions, like prompting users just to allow ccess to location services or cameras in real time, versus presenting them with a long list of permissions before an install.
She also discusses some of the exciting new APIs released with the Android M preview, as well as Google's new Design Support Library, which makes it easier for designers to implement many of the features of material design without a lot of extra work.
Enjoy, and don't forget to subscribe to our Ask a Dev YouTube channel to catch more videos like this.

10 steps to take if your conversion rates drop — first, don't panic

10 steps to take if your conversion rates drop — first, don't panic


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Plummeting conversion rates can spell bad news for a business that relies primarily on online sales, and how you react is critical. Factors such as technology failures and sales funnel issues play into sudden conversion rate drops, as do overall market changes — but you won't know the real reason, or best way to respond, until you investigate the source.
Before you panic, take some time to analyze what might have gone wrong. I asked 10 entrepreneurs from Young Entrepreneur Council (YEC) to weigh in on what to do after spotting the initial decline. Their answers are below.

1. Trace your steps

Syed Balkhi
If you see your conversion rates are dropping suddenly, then the first thing you need to do is figure out what's causing the drop. Is it directly related to a drop in your website traffic or is it something else?
SEE ALSO: 14 traits every successful social media manager should have
If your traffic is the same and the conversion has dropped, then you should run through your checkout process and test that it is working in all different browsers. Often you will be able to find the problem during this process and fix it. If the drop in conversion is caused by drop in traffic, then you should look at any outlier drops. For example, if Google was your No. 1 source and it's down 80%, then log into your Webmaster tools to see if there are any penalties against your domain.
— Syed Balkhi, OptinMonster

2. Analyze your acquisition channels methodically

Joshua Dorkin
First, break out the data into your acquisition channels. From which acquisition channels are your conversion rates changing? Is it all of them or just one?
If it’s all of your channels, that’s indicative of a changing market. Perhaps a competitor is outdoing you, or perhaps your market is shrinking. You need to take a holistic view of your business and product and transform it to match the changing market landscape.
If it’s just one or two of your channels, even if they are major ones, that’s probably due to a lack of accountability or innovation within your marketing team’s control. Examine each step of your funnel and look for weak points. Engage in split testing and hold your staff accountable for getting those conversion rates back up.
— Joshua Dorkin, BiggerPockets

3. Consider seasonal effects

Justin Boggs
It is something I like to call buyer's fatigue. It is what happens to consumers right after the holidays, towards the end of January or right after Valentine's Day, when they are less willing to part with money anymore. They are still browsing, but aren't as quick to pull the trigger. The effects are rather sudden. While you might be getting the same level of traffic, less people are converting. It is important to think about these seasonal effects so that you don't inadvertently make changes to your site that may actually be detrimental to its success.
— Justin Boggs, ZeeBerry.com

4. Check the top of the funnel

Neil Thanedar
The longer you run the same marketing campaign, the less effective it becomes. This is true of paid and unpaid customer acquisition channels. Check to see if the quality of your incoming traffic has dropped recently. If so, it's time to build new content and test new platforms.
— Neil Thanedar, LabDoor
SEE ALSO: 9 marketing mistakes that make you look like a rookie

5. Act like a customer

Kevin Henrikson
Look at where your customers are coming from. Your answer will be different depending on whether your customer came from organic traffic, social media or paid advertising. Remember that within each of those groups are subgroups. Also check the functionality of the page they're landing on — something might be misfiring. I always prefer to do a test transaction myself on each of the major channels.
— Kevin Henrikson, Acompli (now Outlook iOS/Android @ Microsoft)

6. Take a look at your analytics

Jayna Cooke
This is a major issue that should be addressed as early as possible in order for it to not snowball into a larger problem. You need to dig into your analytics and look to see if the traffic that is coming in is the same as it has been. Ask yourself if you changed anything about your landing pages. I would have a friend randomly test it on your website so you can get honest feedback. This issue is originating somewhere and you need to decipher where it is coming from in your analytics.
— Jayna Cooke, EVENTup

7. Look over paid search campaigns

Miles Jennings
Give a once-over to your paid campaigns and their locations, and see if there have been any changes that you did not keep track of or were not aware of. Was the landing page for one of your links changed? Was a special offer or coupon removed from your landing page content, therefore bringing a lot less traffic to the site? Was your campaign budget hit? All of these things should be looked into and measured right when you see any kind of decrease, so that in the future you will know what may be causing a decline in conversion.
— Miles Jennings, Recruiter.com
SEE ALSO: 6 ways to build career skills on your own

8. Go through your lever checklist

Zach Robbins
Consider all of the levers influencing your conversions and investigate each of them. For example, I would run down the following checklist to see where the drop is coming from:
  1. Test the conversion flow.
  2. Dig into your back end for potential issues (tracking, attribution, configuration, etc.).
  3. Check impact of any tests that are running on ads, landers, etc.
  4. Check for increases in competition.
  5. Drill down into individual traffic sources.
  6. Segment out conversion rates by device, browser, geo, etc.
  7. Account for any industry trends or seasonality.
Then, most importantly, prioritize where there’s the biggest opportunity to move the needle and get to where you need to be.
— Zach Robbins, Leadnomics

9. Check your technology

Joel Apfelbaum
Make sure all your technology is working. Your could be having server issues, your forms may not be working, etc. Performance is typically a huge issue — people don't have patience to deal with slow websites or glitchy software. Thoroughly test all your technology.
— Joe Apfelbaum, Ajax Union

10. Don't panic

Justin Gray
Any market change has to be respected. First, don't panic — it isn’t time for sweeping change at the slightest indicator. Next, take a look at Google Analytics — what changed? If absolutely nothing has changed in terms of calls to action, digital assets, site ranking and authority, then the issue is simply that you haven’t followed the market. Take that as a cue to revisit your buyer personas and do a refresh. I will say, however, 9.9 times out of 10, something major has changed in terms of the site structure or content. Markets don't often turn on a dime — unless its 2000 or 2008.
— Justin Gray, LeadMD
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Scott Gerber is a serial entrepreneur, author (Never Get a 'Real' Job), TV commentator and founder of Young Entrepreneur Council (YEC), an invite-only organization comprised of the world's most promising young entrepreneur...more

Monday, June 22, 2015

Samsung attaches screen to semi-truck to show the road ahead

Samsung attaches screen to semi-truck to show the road ahead



IMAGE: SAMSUNG TOMORROW
Getting stuck behind a slow, smelly semi-truck is no fun, but big vehicles are often too hard to pass on a narrow two-lane road. But Samsung just came up with a very clever solution to this problem.
The Argentinian arm of the South Korean tech giant is showing off what it calls a Safety Truck, a semi truck with a wireless camera mounted on the front, displaying the road ahead on a screen tacked on to the back of the truck. The move is a part of an effort to reduce head-on collisions from passing.
SEE ALSO: Google launches website to address safety concerns about self-driving cars
The front-mounted camera broadcasts its signal to four monitors on the back of the truck
The front-mounted camera broadcasts its signal to four monitors on the back of the truck to give drivers behind the truck a good view ahead. In addition to making passing safer, Samsung says that this would let drivers see any obstacles in the road ahead, preventing the need for sudden emergency braking.

Samsung said the truck used for testing isn't currently operational anymore, but it is working with government and non-government safety agencies to develop the tech further.
It seems like it would work well on two-lane roads, but it wouldn't really have much use on multi-lane highways. The screen could also prove to be a distraction, and image quality issues could be a concern as well.
It's an innovative approach to road safety, but Samsung hasn't provided much of a timeline for its development, so who knows when, or even if it will be adopted.

Want the $35,000 Tesla Model 3? You'll have to wait until 2018

Want the $35,000 Tesla Model 3? You'll have to wait until 2018


Tesla-model-s-p85d
IMAGE: IMAGINECHINA/CORBIS
Elon Musk's dream of having everyone zip around in affordable electric cars has been delayed.
The Tesla Model 3 was expected to be unveiled as early as March 2016 and get a late 2017 launch date, but now it looks like it won't start production until 2018, according to documents obtained by electric-car news site Inside EVs.
SEE ALSO: Speed demon: One man's mission to make his Tesla go faster
The Model 3 will cost $35,000 before government subsidies, making it $40,000 less than the larger Model S, and putting it in line with the BMW's 3 Series.
Tesla is no stranger to production delays. Its Model X crossover was supposed to debut in 2013, but that date was pushed back to late 2015. At the time of this writing, Tesla has yet to debut a production version of the Model X.
Production delays are a reality of making cars, but what sets Tesla apart from others is its announcement of new models years before they hit the market.
Production delays are a reality of making cars, but what sets Tesla apart from others is its announcement of new models years before they hit the market. Typically, automakers don't make an official announcement until the car is nearly ready for production within a year or so.

Considering the Model 3 will be Tesla's first truly mainstream product — the Model S currently starts at $75,000 before government subsidies — the company would be wise not to rush a launch. The Model 3 will likely attract new customers, which makes it a bit of a make-or-break car for Tesla.
But competitors may be out to steal its thunder. Chevrolet is rumored to release its Bolt EV, which features a 200-mile range and price that undercuts the Model 3 at $30,000, in 2017. Meanwhile, Nissan will reportedly release a new Leaf that same year.

Sunday, June 21, 2015

Aussie Iron Man: Patient receives a 3D-printed titanium jaw

Aussie Iron Man: Patient receives a 3D-printed titanium jaw


Joint
A model of the 3D printed joint.
IMAGE: 3D MEDICAL
A Melbourne psychologist has taken a step towards becoming an Aussie Iron Man, after receiving a 3D-printed prosthetic jaw in May.
In an Australian-first operation, surgeons, academics and a local 3D-printing company collaborated to produce the customised titanium implant.
The patient, 32-year-old Richard Stratton, told Mashable Australia the journey began when doctors discovered he lacked a condyle — a portion of bone that connects the skull to the jaw — on the left-hand side of his jaw. Doctors haven't been able to work out how the deformity started, but it meant the right-hand side of his face was doing all the work.
SEE ALSO: 3D printing has been taken to a whole new level: Color

The journey to a 3D-printed jaw

As Stratton's jaw pain grew over the last few years, his doctor came to him with the idea of implanting a 3D-printed jaw joint.
Nigel Finch, chairman of Melbourne-based company 3D Medical, told Mashable AustraliaStratton's surgical team reached out to the company as they wanted a prosthetic that best suited the patient's unique jaw.

Richard Stratton before the surgery.
IMAGE: RICHARD STRATTON
In other cases, a standard prosthetic is chosen that's the nearest match to the patient's size and shape, Finch said. Surgical work is then done to change the anatomy of the patient to fit the implant. Computer generated manufacturing, on the other hand, means the implant is fitted precisely to the patient's body.
Working off medical imaging data, 3D Medical were able to build a model of Stratton's skull and jaw in virtual reality using image processing and rendering software. After numerous tests over a month-long period, the company printed the titanium implant to meet all medical standards. "It's made in an incredibly fine level of detail that we were able to achieve using a 3D printer," Finch said.
Because the patient's jaw did not need to be altered to fit a standard-sized prosthetic, the surgery time was shortened. In a single procedure over five hours on May 2 at Epworth Freemason hospital in East Melbourne, the jaw was opened and the implant inserted, Finch said.
The idea of customisation also meant a lot to Stratton. "Knowing it was something purposefully made for me, not just something off the shelf ... it felt like they'd really studied my skull and made it specifically for me," he said.

The results

Stratton said he's very happy with the results of the surgery. There's been some swelling and tightness, but six weeks on, it's calming down and his face is looking more symmetrical than previously. "I'm happy. I've always been conscience of my tilted smile," he added.
While he was nervous about the procedure, the enormity of the medical and technological feat has started to sink in. "I was glad I could be a part of that pioneering moment," he said. "The technology will continue to grow. I can't wait to see what they do with other prosthetics."
"I've got something 3D printed in me. How many people can say that right now?"

Richard Stratton recovering from his surgery.
IMAGE: RICHARD STRATTON

The future of 3D-printed prosthetics

3D Medical are planning to use 3D printing to produce medical implants in all shapes and sizes for different parts of the body. "This particular operation has validated our business model," Finch said.
In the future, he hopes the time between when an implant is required and when it is delivered will be drastically reduced. One day, implants could be printed on-demand using standard medical imaging data from procedures like magnetic resonance imaging (MRIs), X-rays and ultrasounds, he said. Most importantly, implants could be constructed to ideally suit the patient's anatomy.
3D printing prosthetics is not an expensive process and will only get cheaper as the technology is leveraged, Finch added. However, he suggested companies like his need to work with the hospital system, health insurers and surgical teams to demonstrate the efficacy of the system.
"The test here is who pays for it?" he said. "There's a lot of inertia around how these procedures are done ... It's just going to take time for the healthcare system to start to look at that and bring it into the mainstream."

3D printing has been taken to a whole new level: Color

3D printing has been taken to a whole new level: Color


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3D printing is driving a huge revolution in the world of design and technology. In the process, it is changing the way we think about the design, prototyping and manufacturing of just about everything.
But anyone who has played with a 3D printer will be aware of one significant problem. This 800-pound gorilla is the issue of color. 3D prints can be magnificent copies of more or less any shape. But in terms of color, they are mere shadows of the originals.
Today, that looks set to change thanks to the work of Alan Brunton and pals at the Fraunhofer Institute for Computer Graphics Research in Germany, who have worked out how to produce accurate colors in a 3D print for the first time. Their work promises to take 3D printing to an entirely new level.
The approach takes advantage of a relatively new way to make 3D prints. In general, these objects are made one layer at a time by fusing powder or laying down extruded plastic. Neither approach gives anything but rudimentary control over an object's color.
What's needed instead is a way of creating objects in the same way as 2D printers make images, pixel by pixel. In other words, this requires 3D prints to be laid down, not in layers, but voxel by voxel.
In the last year or so, exactly this technology has come to market. It works using a number of inkjets that lay down an object, droplet by droplet. These droplets are instantly cured by UV light to form a solid.
That immediately allows the possibility of much more accurate control of color, since each droplet can be thought of as a voxel. This is the approach that Brunton and pals have taken, but it is easier said than done for a number of reasons.
The first is the sheer volume of data and number crunching involved in creating a virtual color 3D object, even before the printing begins. 
The droplets from inkjets are tiny — there are some 18 million of them in a solid cubic centimeter.
The droplets from inkjets are tiny — there are some 18 million of them in a solid cubic centimeter. So any decent-sized object must be made up of tens of billions of voxels and the impact that each one has on the final color has to be calculated.

The second is that the droplets are translucent because UV light must be able to pass through to cure them. This has a significant impact on their visual appearance since light ends up passing through several layers of voxels, being scattered along the way.
That means droplet color has to be carefully controlled to a depth of several voxels throughout the object. And this dramatically increases the complexity of the algorithms needed to calculate their required colors.
The final challenge comes from the nature of 3D printing. In 2D printing, it is possible to combine up to three different inks at any point on an image. In a 3D print, each droplet must be a single material and that places important constraints on what is possible colorwise.
Nevertheless, Brunto and co have made significant advances by bringing to bear the many decades of research that has been done on color management for 2D printing and for color imaging in general.
Their approach is to combine two techniques. The first is the 3D equivalent of a 2D printing technique called half-toning. This is where continuous shade and color is replaced by an arrangement of dots of different sizes and spacing. The second is a way of calculating the color of a surface given the way light has been scattered for several layers of voxels below.
And the results look impressive. In the pictures above, three apples and the thumb are real. The rest are 3D prints but it is not easy task to tell them apart.
And Brunton and co say the results should get better in the near future as materials scientists develop less translucent printing materials and as printers become even higher resolution. In both these respects, the team's algorithms are future proof. Less translucent inks should be easier to handle and the higher resolution should be manageable too.
The ability to combine translucent and opaque inks should even make it possible to reproduce the surface appearance of many biological materials that are also semi-translucent, such as skin.
That's fascinating work. It will usher in a new generation of printing application. And it will make the current generation of printers look thoroughly old-fashioned in just a few years.
Ref: arxiv.org/abs/1506.02400 : Pushing the Limits of 3D Color Printing: Error Diffusion with Translucent Materials
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Injectable implants could help crack the brain’s codes

Injectable implants could help crack the brain’s codes


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A micrograph shows neurons (whose nuclei are stained blue) integrated with a flexible nanoelectronic mesh (green) inside a mouse brain.
IMAGE: MIT TECHNOLOGY REVIEW
 
Understanding how the brain works — or doesn't, as the case may be — depends on deciphering the patterns of electrical signals its neurons produce. Recording them requires inserting electrodes into the tissue. But the rigid devices traditionally used to record these signals, or to therapeutically stimulate certain regions, can damage the brain and elicit an immune response, and they tend not to work for very long.
Now researchers have shown that a new type of flexible electronic device, which can be delivered via injection, could be a gentler alternative.
In the near term, the technology could yield valuable insights about how the electrical activity of certain circuits, or networks of neurons, is related to discrete functions, like the creation of a lasting memory. It could also shed light on the brain's dysfunctions, like schizophrenia or Parkinson's disease (see "Cracking the Brain's Codes" and "Shining a Light on Madness"). Further down the road, the concept could lead to a better way to deliver therapeutic stimulation to address neurodegenerative diseases, or a stable brain-computer interface that might help disabled people do things their condition usually wouldn't allow them to do, like move prosthetic limbs or communicate (see "The Thought Experiment").
One current therapeutic use of implanted electronics is called deep brain stimulation, which is FDA-approved and used to treat Parkinson's disease. The therapy involves inserting electrodes into certain regions of the brain and producing electrical pulses meant to regulate abnormal ones. This approach is also being studied as a treatment for other disorders, such as epilepsy.
Today's technology is limited, not by the electronics, which are already "really powerful," but because the interface between the brain tissue and the electronics is far from ideal, saysCharles Lieber, a professor of chemistry and chemical biology at Harvard University. Existing implantable electrodes are too large and rigid, and this "mechanical mismatch" leads to tissue damage and immune response, he says.
Over time the devices tend to lose their ability to record or stimulate the area of interest. Researchers can only record for a matter of days or weeks. Implants for deep brain stimulation often must be repositioned or have their settings adjusted, and usually don't last for more than a few years.
In recent years, a lot of progress has been made in research labs toward designing new kinds of implantable electronic devices made of more flexible and biocompatible materials (see "Wireless Micro LEDs Control Mouse Behavior"), but none have overcome this problem, Lieber says. 
The new nanoelectronic "mesh" structure that Lieber's group has designed is much more like the biological tissue it is meant to interface with
The new nanoelectronic "mesh" structure that Lieber's group has designed is much more like the biological tissue it is meant to interface with, he says. Its features are the size of cells or smaller, and, according to the researchers, the mesh is several orders of magnitude more flexible than any previous implantable electronic device.

The group originally conceived of the design a few years ago with tissue engineering in mind. They developed a scaffold-like structure that could support the growth of cells in three dimensions, similar to how it happens in the body, and also house electronic sensors for taking measurements from those cells. That demonstration suggested that the technology was potentially useful for measuring cellular activity.
Now they've shown that they can use a syringe to inject the mesh scaffold into targeted areas in the brains of live mice. They also demonstrated the ability to record signals from the injected implants by attaching a wire to a section of the mesh that remains outside the body. Tests indicate very little harmful tissue response, suggesting that the technology offers "substantial promise" for long-term brain activity mapping.
Made using conventional photolithography techniques, the mesh is composed of nanoscale metal wires and polymers. Tiny electronic devices, such as sensors and electrode stimulators, can be built into it. A scaffold that is a centimeter and a half in width can fold into a size small enough to be injectable through a needle whose diameter is just a few hundred micrometers. Once inside the body, it unfolds to conform to its 3-D environment. When it encounters a ventricular cavity in the brain, for example, it can unfold to fill in the space, bridging the two sides. Over time, neurons integrate with the mesh, providing the opportunity to record from or stimulate many single cells in a given region. The cells and the mesh have a "very positive interaction," says Lieber, and the neurons "seem happy, at least over a month's timescale."
Lieber says his group has observed in unpublished experiments that it is possible to record for several months, from the same specific neurons, without signal degradation. He says the goal now is to demonstrate the same over six months to a year in mice before moving on to primates and, eventually, human trials.
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This article originally published at MIT Technology Review here