Young stars ejecting plasma could give us clues into the Sun’s past Kyoto, Japan — Down here on Earth we don’t usually notice, but the Sun is frequently ejecting huge masses of plasma into space. These are called coronal mass ejections (CMEs). They often occur together with sudden brightenings called flares, and sometimes extend far enough to disturb Earth’s magnetosphere, generating space weather phenomena including auroras or geomagnetic storms, and even damaging power grids on occasion. Scientists believe that when…
During equilibration ordinary many-body systems lose all information about the initial state. Every morning we experience an example for this behaviour. Milk…
“Nothing is impossible!” In line with this motto, physicists from the Quantum Dynamics Division of Professor Gerhard Rempe (director at the Max Planck…
Lasers have become indispensable to modern life since they were invented more than fifty years ago. The ability to generate and amplify light waves into a…
The Research Institute of Electrical Communication at Tohoku University (RIEC), Hitachi, Ltd. (TSE:6501, Hitachi) and Hitachi Solutions East Japan, Ltd….
The assay detects lgM antibodies with high sensitivity and specificity and thus provides a means for the early serological diagnosis of flavivirus infections. lt is based on an lgM-capture format and highly purified recombinant viral antigens, allowing the differentiation between infections with antigenically closely related flaviviruses like dengue and Zika viruses. The lgM-capture format is robust, can be easily standardized and readily adapted to existing diagnostic systems for antibody detection.
Monitoring of fish swarms in muddy waters or during the night with new procedure for operating and reading out of multi static sonars.
The invention offers an autoantibody set that can be used as a diagnostic tool for diagnosis and stratification of colorectal cancer patients.
Batteries are a fundamental part of any new electrical appliance and the increasing energy demand requires higher performance of batteries. We present a novel cathode material for LiS batteries with imporant strengths: Simple, sustainable and cost-effective production, Prevention of Shuttle Effect, High sulfur content, Higher cycle stability.
The novel mathematical concept of tangles is for the first time applied to identify highly connected regions in a graph. The applications of this analysis technique include image recognition & compression, cluster analysis & data mining and data quality assessment.
Engineers at Oregon State University have created a new computer modeling package that people anywhere in the world could use to assess the potential of a…
In less than a week, the spacecraft Juno will arrive at Jupiter, the culmination of a five-year, billion-dollar journey. It's mission: to peer deep inside the…
Astronomers at The University of Nottingham have released spectacular new infrared images of the distant Universe, providing the deepest view ever obtained…
Glasses are neither fluids nor crystals. They are amorphous solids and one of the big puzzles in condensed matter physics. For decades, the question of how…
Congestion occurs in packet-based communication networks when more traffic temporarily enters a network than can be forwarded. Congestion management detects congestion in a communication network and drops or marks packets to mitigate congestion. Still, a few heavy users can monopolize the bandwidth of a bottleneck link, e.g., by opening many flows or using non-responsive transport protocols to send at large data rate. A challenge is to drop or mark the right packets if fair capacity sharing and low delay are desired in a network.
We propose activity-based congestion management (ABC), with which users can share a network’s capacity fairly within an ABC domain while keeping packet delays low. To that end, activity meters and markers equip user traffic with activity information that reflects a user’s traffic rate. In case of congestion, traffic with high activity is preferentially dropped on bottleneck links. Thereby, users can achieve a fair share of the network’s transmission capacity.
Low delay is achieved by leveraging active queue management (AQM) in routers or switches that start dropping traffic in case of congestion to avoid extensive, permanent packet queueing. ABC-AQM is a modification of a normal AQM that increases drop probabilities for high-activity traffic and decreases them for low-activity traffic. The mechanism is easily adaptable to various AQMs.
“One of the big thrusts in terahertz technology is wireless communications,” said Kimberly Reichel, a post-doctoral researcher in Brown's School of Engineering…
How can a gecko move across a ceiling upside down? Two mechanisms are responsible: Adhesion via billions of extremely fine hairs on its feet, which enable it…
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