文章资讯
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- 2015-06-29 Study demonstrates wearable sensors to detect firearm use
- A new study from the University of Pennsylvania demonstrates that wearable sensors could one day transform the correctional system by tracking gun use by community-based offenders, who account for a disproportionate share of fatal and non-fatal shootings.
Currently, detecting and deterring this type of crime can be challenging in the absence of reliable evidence that a particular community-supervised offender illegally used a firearm. - See Details
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- 2015-06-27 Wearable clip tells parents, coach about head impact
- According to the U.S. Centers for Disease Control and Prevention, a concussion is a type of injury caused by a bump, blow, or jolt to the head that can change the way your brain normally works. Concussions may occur from a blow that causes the head and brain to move quickly back and forth. Sport-related concussion has been a frequent topic in the media as professionals have expressed concern over incidents that may go underreported.
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- 2015-06-27 Technique enables improved sensing of toxic mercury compounds and pesticides
- Fluorescence-based detection of pesticides and other environmentally harmful chemicals is limited by the ability of current methods to reliably and selectively sense specific chemical species. A*STAR researchers have now developed a co-precipitation process that removes excess reagents to improve the efficiency of fluorescent sensors.
The fluorescence properties of protein-protected gold clusters make them useful for detecting and sensing various chemical species, such as hydrogen peroxide and mercury. However, the detection sensitivity is hampered by any free protein molecules that remain in the cluster solution, as these proteins may reduce the fluorescence or interact with the chemical species under detection. - See Details
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- 2015-06-27 RobotsLAB offers tiny BMW Z4 for NAO robot to drive around (w/ Video)
- Aldebaran Robotics' RobotsLAB, maker and seller of the small humanoid robot, NAO, has built a miniature version of the BMW Z4 for the NAO robot to drive around—and it's for sale to consumers already.
The NAO robot has made a splash in the educational community—it comes with a dual camera computer system, a sonar sensor to allow for gauging distance, dual infrared emitters along with receivers, eight pressure sensors and nine tactile sensors. - See Details
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- 2015-06-27 Nanoscience makes your wine better
- One sip of a perfectly poured glass of wine leads to an explosion of flavours in your mouth. Researchers at Aarhus University, Denmark, have now developed a nanosensor that can mimic what happens in your mouth when you drink wine. The sensor measures how you experience the sensation of dryness in the wine.
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- 2015-06-27 Fingertip sensor gives robot unprecedented dexterity
- Researchers at MIT and Northeastern University have equipped a robot with a novel tactile sensor that lets it grasp a USB cable draped freely over a hook and insert it into a USB port.
The sensor is an adaptation of a technology called GelSight, which was developed by the lab of Edward Adelson, the John and Dorothy Wilson Professor of Vision Science at MIT, and first described in 2009. The new sensor isn't as sensitive as the original GelSight sensor, which could resolve details on the micrometer scale. - See Details
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- 2015-06-27 Image sensor for analysis of blood samples for early diagnosis of diabetes and Alzheimer's disease
- Professor Kazuaki Sawada and Dr. Takigawa of the National Center for Geriatrics and Gerontology and colleagues at Toyohashi University of Technology have established an easy to use, low-cost, rapid, and high sensitivity semiconductor-imaging based medical diagnostic biosensing system for analyzing blood and urine for early diagnosis of ailments including diabetes and Alzheimer's disease.
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- 2015-06-27 Robot cheerleading squad showcases sensor technology
- A team of cheerleading robots made their dancing debut in Tokyo on Thursday as creator Murata Manufacturing demonstrated its cutting-edge sensor technology.
With curtains pulled back and Japanese pop music pulsing in the background, 10 doll-like robot girls with illuminated pom-poms rolled out onto a stage to perform their choreographed routine. - See Details
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- 2015-06-27 Kickstarter project SAM kit helps teach hardware system coding
- SAM Labs, a London based startup has created a Kickstarter project that looks to take do-it-yourself project making and teaching how to program digital hardware, to a new and simpler level. Their SAM kits allow for physically connecting individual hardware components together and then using an intuitive software interface to create software that makes the newly created hardware device work as desired.
Imagine physically connecting a light sensor to a Bluetooth enabled text generator—when the sensor senses a light being turned on or off, it sends a message to the text generator which in turns sends a text message to someone who wants to know about it. Then imagine being able to generate the software that allows it all to happen, with an easy to use drag-and-drop user interface. - See Details
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- 2015-06-27 Analyzing gold and steel – rapidly and precisely
- Optical emission spectrometers are widely used in the steel industry but the instruments currently employed are relatively large and bulky. A novel sensor makes it possible to significantly reduce their size and, moreover, enables a more precise analysis in half the time previously required.
Gold is expensive, so it is only natural that jewelry buyers should want assurance that the precious ring or necklace they have set their heart on is really made of genuine gold. Jewelers in India are required by law to test the purity of gold using an optical emission spectrometer that analyzes the composition of the metal on the basis of the emittedlight spectrum. - See Details
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- 2015-06-27 Scientists probe leak risk from seabed CO2 stores
- A UK-led international research team has carried out the first experiment to recreate what would happen if CO2started leaking after being stored deep under the sea floor. Their findings add weight to the idea that this could be a viable way to cut our impact on the climate.
They piped 4.2 tonnes of the gas 11 metres below the seabed in Ardmucknish Bay, near Oban in Scotland, releasing it into the sediments there over 37 days. They then used chemical sensors and acoustic monitoring equipment to track how it emerged, while also measuring the effects on the ecosystem. - See Details
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- 2015-06-26 Analysis tracks origins of algal light sensors to a shared ancestor one billion years ago
- Researchers determined the origin of a group of protein-based light sensors in land plants and a series of related phytoplankton by sequencing and comparing RNA in these genomes.
Marine phytoplankton are considered responsible for roughly half of the global carbon dioxide fixed annually. The study provides insights into how major primary producers (organisms that fix CO2 into biomass by photosynthesis) such as plankton use light signals to respond to the environment. - See Details
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- 2015-06-26 Team invents sensor that uses radio waves to detect subtle changes in pressure
- Stanford engineers have invented a wireless pressure sensor that has already been used to measure brain pressure in lab mice with brain injuries.
The underlying technology has such broad potential that it could one day be used to create skin-like materials that can sense pressure, leading to prosthetic devices with the electronic equivalent of a sense of touch. - See Details
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- 2015-06-26 Nanodevices for clinical diagnostic with potential for the international market
- In order to obtain accurate and immediate diagnosis, a group of researchers in the area of Nano-Optics at the Center for Scientific Research and Higher Education of Ensenada, Baja California (CICESE), in the north of Mexico, developed a sensor based on the properties of light to perform, among other things, blood analysis, giving health specialists accurate information.
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- 2015-06-26 The breathing sand: New measurement technique detects oxygen supply to the bottom of the North Sea
- New analytical methods show for the first time, how the permeable, sandy sediment at the bottom of the North Sea is supplied with oxygen and which factors determine the exchange. Based on the detailed investigation and new measurement technology described by a research team led by GEOMAR Helmholtz Centre for Ocean Research Kiel, the turnover of organic matter and nutrients at the sea floor as well as future changes within the dynamic ecosystem can be better assessed.
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- 2015-06-26 Blocks will go beyond just imagining a snap-together smartwatch
- "Imagine countless blocks of cutting-edge technology, which you can snap together to build your own personal, unique wearable device..." such is the beckoning call of a modular concept in smartwatch assembly—not by the technician in a factory but by you, the owner. Just as the modular piece concept gained media attention with Google Project Ara, a team of engineers and designers behind Blocks have been working to provide a smartwatch wearable in customizable blocks form.
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- 2015-06-26 Review: Apple Pay in action
- If there ever comes a day I can ditch my wallet and use my phone to pay for everything, I'll look back to my first purchase through Apple Pay: a Big Mac and medium fries for $5.44. That wallet-free day won't be coming for a while, if ever, but Apple's new payments system brings us much closer.
There were a few unexpected steps setting up Apple Pay on Monday, and the employee at a local McDonald's looked befuddled as I stood there after waving an iPhone 6 over the wireless reader in front of the cash register. - See Details
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- 2015-06-26 Review: Better cameras, less glare in iPad Air 2
- If I've seen you taking photos with a tablet computer, I've probably made fun of you (though maybe not to your face, depending on how big you are). I'm old school: I much prefer looking through the viewfinder of my full-bodied, single-lens reflex camera, even though it has a large LCD screen.
But as I tested out Apple's new iPad Air 2, I see why people like to shoot pictures with a tablet. Images look great on the large screen, and there's less guesswork about whether or not small details, such as lettering on a sign, will be in focus. - See Details
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- 2015-06-26 Using sound to picture the world in a new way
- Have you ever thought about using acoustics to collect data? The EAR-IT project has explored this possibility with various pioneering applications that impact on our daily lives. Monitoring traffic density in cities and assisting energy saving devices in houses, for example, could enable the development of smart cities and buildings.
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- 2015-06-26 Packing for Mars
- Like surgeons in an operating room, the technicians work gowned and masked in ESA's ultraclean microbiology laboratory, ensuring a high-tech sensor will not contaminate the Red Planet with terrestrial microbes.
This temperature sensor is destined to land on Mars as part of ESA's Schiaparelli module in late 2016. - See Details
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- 2015-06-26 Sweat and a smartphone could become the hot new health screenin
- A University of Cincinnati partnership is reporting a significant leap forward in health diagnostics that are more accurate than what's available today, yet considerably less invasive than something like a blood screening. It's a lightweight, wearable device that analyzes sweat by using a smartphone.
In an article published in the latest issue of IEEE Spectrum Magazine, Jason Heikenfeld, a UC professor of electrical engineering and computing systems, highlights new developments regarding the gadget that can gather vital medical information in almost real time. - See Details
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- 2015-06-25 Line camera makes magnetic field lines visible in 3D and real time
- Fraunhofer scientists have developed a high-resolution magnetic line camera to measure magnetic fields in real time. Field lines in magnetic systems such as generators or motors, which are invisible to the human eye, can be made visible using this camera. It is especially suitable for industrial applications, for example in quality assurance during the manufacture of magnets. A prototype will be on display for the first time at electronica 2014 in Munich from November 11-14 (Hall A4 / Booth 113).
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- 2015-06-25 BeBop Sensors to offer sensor expertise to wearables
- Keith McMillen has been an innovator in audio and music technology for nearly 30 years. His bio notes tell us that "He has been working his entire adult life on one single problem —how to play live interactive music in an ensemble using extended instruments moderated by computer intelligence." Keith McMillen Instruments, the California-based company, said on its company site that "We believe when a computer is played as a musical instrument it should feel and respond like one, with all the nuance and sensitivity that makes an instrument musical."
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- 2015-06-25 World's first photonic pressure sensor outshines traditional mercury standard
- For almost 400 years, mercury gauges have prevailed as the most accurate way to measure pressure. Now, within weeks of seeing "first light," a novel pressure-sensing device has surpassed the performance of the best mercury-based techniques in resolution, speed, and range at a fraction of the size. The new instrument, called a fixed-length optical cavity (FLOC), works by detecting subtle changes in the wavelength of light passing through a cavity filled with nitrogen gas.
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- 2015-06-25 Health screening for industrial machines
- Germany's Industry 4.0 initiative aims to develop industrial machinery with built-in intelligence based on smart self-monitoring functions. Researchers have now come a step closer to the ideal of a self-maintaining machine. A technology developed as part of the iMAIN project provides real-time online monitoring of unprecedented quality.
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- 2015-06-25 A medical lab for the home
- Fraunhofer FIT demonstrates a mobile wireless system that monitors the health of elderly people in their own homes, using miniature sensors. Besides non-invasive sensors this platform integrates technology to take a blood sample and to determine specific markers in the patient's blood. At its core is the home unit, a compact device located in the patient's home. It incorporates the necessary software as well as sensors and the analytical equipment.
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- 2015-06-25 Researchers use artificially engineered materials to create breakthrough for sound sensors
- University of Maryland (UMD) A. James Clark School of Engineering researchers have developed breakthrough technology to improve sound sensor capabilities through the use of artificially engineered materials.
Sound, or acoustic sensors, play important roles in a wide range of uses. From sonar navigation and detection to medical imaging for cancer and therapies, sensors are an important part of daily life. However, current sensors, like ultrasound for tumor detection or sensors monitoring a bridge's structural health, are limited in their ability to detect weak acoustic signals. - See Details
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- 2015-06-25 Researcher developing wearable device to track diet
- Sensors and software used to track physical activity are increasingly popular, as smart phones and their apps become more powerful and sophisticated, but, when it comes to food, they all rely on the user to report meals.
Dr. Edward Sazonov, an associate professor of electrical and computer engineering at The University of Alabama, hopes to change that through development of a sensor worn around the ear that would automatically track diet, giving medical professionals and consumers accurate information that can be missed with self-reporting. - See Details
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- 2015-06-25 Researchers test first 'smart spaces' using light to send data
- One of the problems in the high-tech field of visible light communication (VLC) - or using light to send data wirelessly - is decidedly low tech: The data transmission stops whenever the light is blocked by people's movements, shadows or other obstacles.
But Dartmouth researchers are experimenting with the first "smart spaces" that feature an interplay of algorithms, ceiling-mounted LEDs, or light-emitting diodes, and light sensors embedded in floors and in smart devices. Such smart spaces track users' gestures and separate shadows from light, enabling a continuous flow of data wirelessly not only between personal computers but smart devices in rooms, buildings, trains and other indoor places. - See Details
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- 2015-06-25 ESA image: Sahara desert, Algeria
- This satellite image was captured over southeastern Algeria in the heart of the Sahara desert.
The heat and lack of water render vast desert areas highly unwelcoming, making satellites the best way to observe and monitor these environments on a large scale.
Satellites provide information on desert ecosystems and their expansion, and about areas at risk of soil degradation, erosion and desertification. Data from spaceborne sensors also assist in the water management of inhabited arid regions, and can track and help predict the movement of dust storms. - See Details