Wednesday, 21 October 2015

Trick That Doubles Wireless Data Capacity Stands Up in Cell Network Tests

Data_Capacity

Doubling Capacity of Wireless Data Connection


Start-up Kumu Networks, in 2012, rolled out of Stanford University to profit from a clever trick with the capabilities of doubling the capacity of any type of wireless data connection. Tests have been carried out recently by one of America’s biggest wireless carriers as well as by Deutsche Telekom, the German telecom colossal owning a major stake in U.S. carrier T-Mobile.

 It has been indicated that doubling is achievable in real cellular networks. The effects showed the products of Kumu Networks, for cellular operators could aid in expanding the capacity of mobile data networks. The company in the longer term anticipates in delivering further capacity boosts by developing its technology adequately compact to accommodate in mobile devices.

Kumu had invented in research which had disapproved the long held supposition that radios could not transmit and receive at the same time and that belief was established on the fact that if radios made attempts to do both at the same time, its outgoing signal tends to drown out incoming one. This is due to it being billions of times stronger and for this reason, the radios in our phone and computers tend to use separate channels to send as well as to received or switch in the midst of sending and receiving on a single channel.

Full Duplex Connection


The founders of Kumu had designed hardware and software which permits the receiver of a radio to filter out interference from outgoing signals. The device is said to then transmit and receive simultaneously what according to Kumu is known as `full duplex’ connection.

This tends to double the effective capacity of an individual radio channel. It could also make it possible to use one where two were needed initially. Kumu had worked with main wireless carriers this summer, on the first test of its technology in real cellular network situations.

An associate professor at Columbia University, Harish Krishnaswamy states that Kumu’s trialsrecommend the idea of full duplex wireless connection could bepractical though the company may have not made public, the detailed results. He mentioned that the work coming out of Kumu seems to be the first clue of realistic demonstration of the technology and there are still more challenges though they are seeing the possibility.

Wireless Carriers – Small Mobile Base Station


The first products of Kumu would be focused on wireless carriers which would be a version of the small mobile base station called small cells utilised to improve coverage in busy areas like stadium. Small cells tend to link back to carrier’s network utilising cable.

 Its version would be cable-free and would utilise the full duplex technology and at the same time serve the nearby devices making a high powered LTE link back to the central network.Creating small cells totally wireless could be helpful for carriers in deploying them in wider range of locations, improving on data coverage and capacity, according to Steven Hong, director of product and cofounder of Kumu.

He anticipates that next year, the carriers would test that product in the field attending live traffic. Kumu also seems to be working on a chip making it possible to reduce the package containing the company’s technology from the size of a hardback book to something similar to a credit card. Earlier in the year, Krishnaswamy’s group had demonstrated a full duplex chip smaller than a fingertip at Columbia and was confident that the technology would ultimately land in phones.

Tuesday, 20 October 2015

This Car Knows Your Next Misstep before You Make It



Experimental New Dashboard Computer – Keep Track of Behaviour Behind Wheel


With the increase in road accidents that are often occurring on the roads due to the driver’s negligence or failure on control of the vehicle, a new development has come up. This is in the form of experimental new dashboard computer which can keep track of the behaviour behind the wheel as well as predict what one is about to do next. Volvo, GM together with the others is on their way of testing systems which would be monitoring head and the eye position in order to identify signs of distraction.

Study by researchers at Cornell University and Stanford portray a more advanced method which could be educated in recognizing body language as well as behaviour which precedes a certain movement. This could activate early alerts like a blind spot vigilant, in advance thereby helping in avoiding serious accidents as per the academics involved.

Saxena Ashutosh, director of a project known as Robo Brain, at Cornell University and Stanford who oversaw the driving project, comments saying that `one could imagine yourself driving on a highway and you look to the right for a second since you intend making a right turn and as you are starting to make a right turn, some other driver pulls into the space which you probably thought was empty’.

Cutting Edge Machine Learning Algorithms


A car could in this instance issue an alert or prevent the driver form pulling into the lane. This method has been trained utilising cutting edge machine learning algorithms which predicts with over 90% precision whenever a driver is about to change lanes in the next few seconds. This lane change is generally signalled with a glance over the shoulder together with indicative head movement and changes in the steering, braking as well as acceleration.

 Ashutosh states that the accuracy achieved is quite excellent to be utilised in a production system. The researchers are exploring various ways for a vehicle to monitor and expect the driver’s behaviour through the project – Brain4Cars. The process involves utilising a machine learning approach known as deep learning in order to distinguish the actions that led the effort of lane changing.

 The systems were trained using data gathered as 10 different individuals drove around 1,180 miles around various locations of California. The researchers propose to make the ensuing data set easily available in order that the other academics and auto researchers could utilise the same.

Luxury Cars Equipped with Sensors


In recent years deep learning is said to be particularly beneficial in recognizing complex or elusive patterns like video and audio. The same has already been used allowing vehicle computers to identify various kinds of obstacles on the road. The team in their recent work had combined data from a video camera with GPS data and information from a computer system of a car.

Several luxury cars are now equipped with sensors which enable safety warnings and automatic breaking and steering. A student of Saxena’s and project lead on Brain4Cars, Ashesh Jain has commented that monitoring activity within a car and outside tends to make such safety systems intelligent.

He says that if the driver is distracted for a moment, if there is nothing in front, the car could be smart enough and not alert the drive. It is about how one utilises the info from all these sensors.

Monday, 19 October 2015

iPhone 6S Plus Review


iPhone_6S_Plus
iPhone 6S Plus offers better screen, robust performance, longer battery life and an awesome camera but it does have its own shortcomings.

No new improvements in looks and designs

It is very difficult for the users to spot the difference between the two models i.e. 2014 iPhone 6 Plus and latest iPhone 6S Plus. Apple has introduced a new color scheme for the iPhones this year which is ‘Rose Gold’ and it is not available for the last year’s model. If any user possesses this color then he will be able to make the difference otherwise both the phones are undistinguishable from each other. However latest iPhone 6S has a small ‘S’ stamped right at the back cover, happens to be just 0.2 mm thicker and 20 g heavier than last year’s variant.

iPhone 6S Plus is a phablet device which comes with 5.5 inch display at a resolution 1080p along with pressure sensitive touch feature. It has a pixel density of 401 pixels but seems almost similar to the last year’s model.

iPhone 6S Plus offers a splendid performance

iPhone 6S Plus is christened with new Apple’s dual core A9 processor which offers splendid performance. It is loaded with a GB RAM which makes it faster than other iPhone models as they run on A8 processor. Moving from one app to another, multitasking and playing or running system intensive apps is quite great but not as smooth as found on the Android devices with similar specifications.

One thing worth mentioning is that this iPhone remains throughout the software and hardware intensive usage which is a delight for the iPhone users. Battery life as expected is pathetic on this device which fails to offer a full day usage without the need of pluging in the charger. Phone’s battery happens to drain quite steeply when browsing the web but the stand by time has been improved considerably.

Apple’s new iOS 9

Apple has unveiled its new iOS 9 along with bundling with iPhone 6S Plus and updates has been released to bring it on the all the iPhones. This OS is more responsive on the iPhone 6S Plus and comes loaded with a number of iOS 9 features like ever on Siri and minor changes in the user interface. It is quite tricky to make Siri understand your voice pattern and it will require a really quite place to do so.

More features makes iPhone 6S Plus more adorable

3D touch will take a little time to get accustomed to and this feature offers an opportunity to perform various tasks without really opening a number of apps. Touch ID sensor will allow you to add another layer of security to the phone wherein you can lock and unlock your device by simply pressing your thumb on the home button.

Apple has just provided users with a 12 megapixel but it is as good as any other camera even better in some instance. iPhone 6S Plus boasts of the 4k video recording capability but it is extremely memory consuming as a one minute video can take up-to 300 mb of space.

Watch a Floating Green Ball of Water Effervesce in Space in Glorious 4K

Green_Ball_of_Water

NASA Astronauts aboard ISS Assessing 4 K Cameras


The astronauts of NASA, aboard the International Space Station- ISS, have been presently assessing a 4K camera for filming science experiments which means that the recording would be at higher frame rate, higher resolution than the usual HD camera and would be offering more information to researcher studying the recordings. Moreover, it would also add more fun together with interesting videos.

Most recent is the video starring astronaut Scott Kelly and the ball of changing colours is unique because of the first space videos which NASA shot in 4K ultra-high definitions HD. Kelly who is part of NASA’s crew, had spent a year in space instead of the standard six months, in order to scale the effects on the body of long term Mars mission, toying with water.

 Subsequent to the 8K UHD, 4K UHD is said to provide the highest resolution viewing experience one can get and is four times the definition which the standard 1080p HD television could offer. NASA has explained in a description of the video that astronaut Scott Kelly had taken on board the ISS, that the higher resolution images and higher frame rate videos seems to disclose more information when utilised on science investigations providing the researchers with valuable new tool aboard the space station.

Video Beautiful Highlighting Various Colours/Texture/Movements


His video is just not beautiful but tends to highlight various colours, textures as well as movements which show the high resolution camera’s tremendous potentials. Kelly has a globule of water in which is added things and is filming the effects.

Water floats in the air as quivering blobs, in microgravity, which tends to make for some experiments which the astronauts finds it fun, like the popping water balloons, or injecting air bubbles and watching how the water tends to move.

In July, Terry Virts, NASA astronaut had inserted an effervescent tablet in a ball of water to observe it dissolve and release gases in the water and in the air. In Kelly’s experiment, he tends to switch it a little wherein he creates the water globule first and then adds what seems like blue and yellow edible dye to colour the water into an algae green.

Camera – Huge Sensors/Potential of High Resolution Imaging


Thereafter he adds effervescent tablets that cause the green globule to bubble and distort as tablet tends to quickly break down producing carbon dioxide. One can observe individual pockets of water explode off the surface after the effervescent tablet has dissolved which is because as the tablet liquefies it generates bubbles of carbon dioxide gas in the water which would generally rise to the surface of a glass on Earth.

However in space it moves to the outer edge of the sphere increasing in size till the bubbles pop flinging bits of water everywhere.The camera – the Red Epic Dragon 4K has also been utilised in the production of films like Peter Jackson’s – the Hobbit, series. Rodney Grubbs, program manager for NASA’s Imagery Experts Program of the camera in July, informs that this is a big leap in camera technology for spaceflight.

These cameras tend to have huge sensors with the potential of very high resolution imaging at high frame rates. It seems like having a high speed 35MM motion picture film camera though it is compact and can use lenses which are already up there besides being digital.



How a 3 D Printer Changed a 4-Year Old's Heart and Life

3D printed heart

Mia’s Malformation Treated With 3-D Printer


Mia Gonzalez who had been suffering from malformation in her aorta, the vessel that pumps blood from the heart, had to spend the first three and a half years of her life missing on most of the activities in life. She had to miss out on day care as well as dance classes due to the condition of colds and pneumonia.

When she was unable to go out and play, she was easily breathless and had to take multiple asthma medication to aid in the breathing. After around 10 hospital stay she had been diagnosed of this ailment. This four year old was in need of an operation to block off the part of her aorta which was putting pressure on her windpipe, making it hard to breathe, swallow and get rid of phlegm whenever she got a cold.

Mia’s mother, Katherine Gonzalez informed that they got out, thinking that she had asthma only to be told that she needed to undergo open heart surgery. However, her malformations seemed to be complicating. The surgeons at Nicklaus Children’s Hospital in Miami, treating Mia would have been apprehensive regarding the process if it was not for the new technology, the 3-D printer

Printer Use Images From MRI/CT Scan Images as Templates


The hospital had obtained a 3-D printer, earlier in the year, which makes the exact models of organs which the doctors could use to plan surgery as well as practice operations. The printer then to use images from patients’ MRI or CT scan images as template and lays down layers of rubber or plastic.

The director of paediatric cardiovascular surgery at Nicklaus Children’s Hospital, Dr Redmond Burke, considered the model of Mia’s heart for couple of weeks and showed it to his colleagues for their contribution regarding the same. He even carried it in his gym bag for quick reference.

He finally had the right insight and instead of making an incision on the left side of this kind of heart defect, known as double aortic arch, he cut into Mia’s chest from the right. Burke informed that without the model he would have been less certain about Mia’s operation and that would have led him in making a larger incision which would cause more pain with longer recovery time. He added that using the model there was no room for doubt and surgeons dislike doubts.

Model Saved Team/Patient – 2 Hours in Operation Theatre


He points that the model saved the team as well as the patient about two hours in the operation theatre since he was capable of having a clearer plan in performing the surgery. Though 3-D printers had been clinically utilised for the last 20 or 25 years in making prototypes for surgical tools as well as other usages, it only began with simulated organs in the last few years, according to Rader.

 Surgeons had utilised the simulated organs for preparing all types of complicated surgeries like the surgery to remove a brain tumour or to correct a severe cleft palate, informs Rader. He further adds that, doctors could operate on them with regular surgical tools again and again till they found the optimal way of doing the surgery.

 For Mia, four months thereafter, her mother informed that the surgery seemed like ancient history to her and she had forgotten all about the surgical scar and had little pain. Though she had some minor colds, none had given her reason to be in the hospital and a month later she was also in a position to participate in her dance performance