Other Tech 

Harmless “T-Ray” Vision Sees Through Boxes, Walls and Skin

Call it the “X-ray vision” app: In several years, smartphones could come equipped with a microchip that lets users peer through boxes, walls and other objects. Rather than dangerous X-rays, however, the chip beams out waves in the harmless terahertz frequency, a little-used portion of the electromagnetic spectrum between microwaves and far-infrared. Terahertz generators historically have been bulky, expensive affairs. But now Caltech researchers have succeeded in crafting terahertz-emitting silicon chips that are smaller than a dime using a standard, inexpensive electronics manufacturing technique. The researchers harnessed an array of…

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Machine Learning for Text Classification

Machine Learning for Text Classification Machine learning can used to classified different category of texts, by using various classifiers. The common machine learning classifiers are support vector machine, Naive Bayes and even ensemble models, such as stochastic gradient descent. Besides, deep learning neural network is also a choice for the text classification. Those classifiers and neural network enable us to category the text and even to find the author for the specific text. The general idea is that we input the text of specific category or author, and then we…

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Other Tech 

NEW SOLID OXIDE FUEL CELL TECHNOLOGY

Scientists are tirelessly working on sources of alternative energy so that we can have a better substitute for fossil fuels in near future. We know that sunlight, wind and geothermal sources of energy are better for everyone. But they also need efficient fuel cells for better utilization of power. Solid oxide fuel cells (SOFCs) seem promising enough for both stationary and mobile applications. Stationary use can cover residential applications to power plants. Mobile applications contain energy for ships at sea and in space, as well as for automobiles. Another advantage of the…

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3 Implications of Memory-Boosting Devices

In fall, DARPA announced a major success in its Restoring Active Memory (RAM) program. Researchers implanted targeted electrical arrays in the brains of a few dozen volunteers — specifically in brain areas involved in memory. The researchers found a way to read out neural “key codes” associated with specific memories, and then fed those codes back into the volunteers’ brains as they tried to recall lists of items or directions to places. While the results are still preliminary, DARPA claims that the RAM technique has already achieved “promising results” in improving memory…

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Miniature fuel cell to keep drones aloft for over an hour and phones charged for a week

Drones are being utilized in everything from parcel delivery to search and rescue, but their limited flight times are restricting their ability to travel great distances or stay for extended periods of time in the field. Simply adding more batteries, however, affects flight characteristics and reduces the load the drone can carry. To help solve this problem, researchers at the Pohang University of Science and Technology (Postech) have created a miniature fuel cell they claim not only provides enough energy to keep a drone in the sky for over an hour, but may…

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Other Tech 

How Trucks Can Make Delivery Drones a Reality

Delivery drones may still seem a ways off because of new U.S. commercial drone regulations requiring drones to stay within sight of their human operators on the ground. But such rules pose no problem for a U.S. startup that developed a drone capable of launching from delivery trucks and dropping off packages within the driver’s line of sight. The HorseFly drone developed by Workhorse Group, an electric vehicle company in Cincinnati, Ohio, is an octocopter designed to ride aboard a delivery truck. Once it gets a delivery mission, the drone can take off through the truck’s roof with a…

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Defeat Hardships With Hard work

Defeat Hardships With Hard work I believe in hard work even there are various hardships in my life wants to stop my step of moving forward. I was not born with the world’s highest IQ, and I was not born with special talents. I am just an ordinary person who was born in an average middle-class Chinese family. That cannot be any more normal. The only way I can stand out from the normal is by hard work. I always make every piece of my work the best performance I…

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Google Play’s new delta algorithm reduces size of Android app updates

Google today announced Google Play store improvements focused on the size of updates. A new delta algorithm, bsdiff, has been rolled out to further reduce patches for apps and games. Mobile users are sensitive to the amount of data they use, especially when Wi-Fi is not available. Google is thus trying to reduce the data required for Google Play app installs and updates, as well as make data cost clearer to users. Google says that for approximately 98 percent of app updates from the Play Store, only deltas to APK files (the…

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Leading Netflix-Style App in China is Finally Exploring the Social Video

Leading Netflix-Style App in China is Finally Exploring the Social Video The biggest Netflix-like online streaming site & app in China finally has come up with a proper plan towards getting into the rapidly expanding zone of social & user-generated short-form videos online. However, the company iQiyi Inc. claims that it might take as long as 3 years to reach the top. The spin-off by Baidu Inc had previously recognized the given potential, but had aimed at focusing on its core business, as told by the Chief Executive Officer of…

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Drone flight powered by lightweight hydrogen-producing pellets

At first glance, hydrogen fuel cells sound like a great power source for fixed-wing drones making long flights – they have much longer run times than batteries, and they emit no emissions other than water vapor. Unfortunately, the hydrogen typically has to be stored in large heavy pressurized tanks. Last month, however, a Raptor E1 electric drone made a successful test flight running on a unique new system that’s actually lighter than the lithium-ion battery it replaced. The flight was carried out on Jan. 19th at Scotland’s Oban Airport, by a team…

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