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Quaestiohat einen Beitrag geschrieben.29. September 2022

Next generation of hearing aids could read lips through masks Researchers Qammer H. Abbasi, FRSA, FRET, Professor Muhammad Ali Imran, FRSE, FRSA, FIET, SFHEA, CEng. and the team from the James Watt School of Engineering, University of Glasgow, with computing scientists developed a technology, which pairs radio-frequency sensing with Artificial intelligence to identify lip movements. The system, when integrated with conventional hearing aid technology, could help tackle the cocktail party effect...

Pushing the limits of remote RF sensing by reading lips under the face mask - Nature Communications

This study aims to solve the fundamental limitations of camera-based systems by proposing a contactless and privacy-preserving radio frequency-based lip-reading framework, which can recognise lip movements under face masks.www.nature.com

Quaestiohat einen Beitrag geschrieben.29. September 2022

Print, recycle, repeat: Scientists demonstrate a biodegradable printed circuit. A team of researchers from the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California, Berkeley have developed a fully recyclable and biodegradable printed circuit. The researchers mention that the new device could divert wearable devices and other flexible electronics from landfill, and mitigate the health and environmental hazards posed by heavy meta...

Quaestiohat einen Beitrag geschrieben.26. August 2022

New Wearable Sensor Detects Even More Compounds in Human Sweat. Researcher Wei Gao and the team from Caltech have unveiled a new wearable sensor that can detect in-human sweat even minute levels of many common nutrients and biological compounds that can serve as an indicator of human health. The new sensor technology includes molecularly imprinted polymers, which are like artificial, reusable antibodies. To understand how they work, imagine a hypothetical object shaped like a plus sign. If y...

New Wearable Sensor Detects Even More Compounds in Human Sweat

Technological advances allow sweat sensors developed in the lab of Wei Gao to detect a greater variety of biological compounds in smaller amounts of sweat, opening the door to better monitoring of health conditions.www.caltech.edu

Quaestiohat einen Beitrag geschrieben.25. August 2022

Material Memory: Researchers discover a material that can learn like the brain. EPFL (École polytechnique fédérale de Lausanne) researcher Mohammad Samizadeh Nikoo and the team have discovered that Vanadium Dioxide (VO2), a compound used in electronics, is capable of remembering the entire history of previous external stimuli. This is the first material to be identified as possessing this property. Samizadeh Nikoo set out to discover how long it takes for VO2 to transition from one state to an...

Researchers discover a material that can learn like the brain

EPFL researchers have discovered that Vanadium Dioxide (VO2), a compound used in electronics, is capable of “remembering” the entire history of previous external stimuli. This is the first material to be identified as possessing this property, although there could be others.actu.epfl.ch

Quaestiohat einen Beitrag geschrieben.4. August 2022

Prototype battery only needs seconds of sunlight to keep smart wearables charged. The University of Surrey's Advanced Technology Institute (ATI) has demonstrated its new photo-rechargeable system, which merges zinc-ion batteries with perovskite solar cells, and how could allow wearables to spring back to life without the need to plug in. Researchers mention this technology provides a promising strategy for efficient use of clean energy and enables wearable electronics to be operated continuous...

Quaestiohat einen Beitrag geschrieben.3. August 2022

Food Scraps Get a Bold New Life. Researchers YUYA SAKAI and Kota Machida from the Institute of Industrial Science at The University of Tokyo have developed a new method to reduce food waste by recycling discarded fruit and vegetable scraps into robust construction materials. The cement-like product is made with a heat pressing technique normally used to turn wood powder into construction materials. They came up with the technology while researching sustainable materials that could perform like ...

Food Scraps Get a Bold New Life

Researchers at The University of Tokyo Institute of Industrial Science repurpose food waste to build materials with a bending strength comparable to concrete and that still taste good.www.iis.u-tokyo.ac.jp

Quaestiohat einen Beitrag geschrieben.26. Juli 2022

Deep learning technology enables faster and more accurate terahertz security inspection. A research team led by Prof. Fang Guangyou from the Aerospace Information Research Institute (AIR), Chinese Academy of Sciences (CAS), has trained and tested a promising detector based on deep residual networks using human image data collected by passive terahertz devices. The proposed method can be used for accurate and real-time detection of hidden objects in terahertz images. The research team replaced ...

Improved SSD network for fast concealed object detection and recognition in passive terahertz security images - Scientific Reports

With the strengthening of global anti-terrorist measures, it is increasingly important to conduct security checks in public places to detect concealed objects carried by the human body. Research in recent years has shown that deep learning is helpful for detecting concealed objects in passive terahertz images. However, previous studies have failed to achieve superior accuracy and performance for real-time labeling. Our research aims to propose a novel method for accurate and real-time detection of concealed objects in terahertz images. To reach this goal we trained and tested a promising detector based on deep residual networks using human image data collected by passive terahertz devices. Specifically, we replaced the backbone network of the SSD (Single Shot MultiBox Detector) algorithm with a more representative residual network to reduce the difficulty of network training. Aiming at the problems of repeated detection and missed detection of small targets, a feature fusion-based terahertz image target detection algorithm was proposed. Furthermore, we introduced a hybrid attention mechanism in SSD to improve the algorithm’s ability to acquire object details and location information. Finally, the Focal Loss function was introduced to improve the robustness of the model. Experimental results show that the accuracy of the SSD algorithm is improved from 95.04 to 99.92%. Compared with other current mainstream models, such as Faster RCNN, YOLO, and RetinaNet, the proposed method can maintain high detection accuracy at a faster speed. This proposed method based on SSD achieves a mean average precision of 99.92%, an F1 score of 0.98, and a prediction speed of 17 FPS on the validation subset. This proposed method based on SSD-ResNet-50 can provide a technical reference for the application and development of deep learning technology in terahertz smart security systems. In the future, it can be widely used in some public scenarios with real-time security inspection requirements.www.nature.com

Quaestiohat einen Beitrag geschrieben.25. Juli 2022

Gapwaves and Bosch enter into a joint development agreement for high-resolution radar antennas. Gapwaves AB and Bosch, a leading global automotive supplier, have entered into an agreement regarding the development and large-scale production of high-resolution radar antennas for automotive vehicle applications aiming at highly automated driving. Due to the increased demand for advanced active safety systems and autonomous applications, the market for high-resolution radar antennas for the highe...

Gapwaves and Bosch enter into a joint development agreement for high-resolution radar antennas

Gapwaves, a Swedish tech company and Bosch, a leading global automotive supplier, have entered into an agreement regarding the development and large-scale production of high-resolution radar antennas for automotive vehicle applications aiming at highly automated driving. The contract has an expected sales value of high double-digit million-euro range over the next decade. Corresponding contractswww.gapwaves.com

Quaestiohat einen Beitrag geschrieben.25. Juli 2022

'Smart necklace' biosensor may track health status through sweat. A team from The Ohio State University demonstrated a battery-free, wireless biochemical sensor that detected the blood sugar or glucose humans excrete from their skin when they exercise. The team fabricated a "smart necklace" complete with a functional clasp and pendant which, once placed around the necks, was used to monitor the glucose level of study participants as they exercised. Instead of a battery, it works using a resona...

Quaestiohat einen Beitrag geschrieben.25. Juli 2022

An All-in-one solar-powered tower makes carbon-neutral jet fuel. Researcher Aldo Steinfeld, a professor from ETH Zürich with a team has designed a fuel production system that uses water, carbon dioxide (CO2), and sunlight to produce aviation fuel. They have implemented the system in the field, and the design could help the aviation industry become carbon neutral. They demonstrate the entire thermochemical process chain from water and CO2 to kerosene in a fully-integrated solar tower system. Pr...

A solar tower fuel plant for the thermochemical production of kerosene from H2O and CO2

For the first time, the thermochemical production of kerosene using solar energy, water, and CO2 is demonstrated in a fully integrated solar tower fuel plant. Solar-made kerosene can replace fossil-derived kerosene and further make use of the existing global jet fuel infrastructures and engines, which are particularly critical for the long-haul aviation sector. This pioneer technological demonstration, performed at a pilot scale relevant to industrial implementation, represents a critical milestone on the path toward the production of sustainable aviation fuels.www.cell.com

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