Researchers are developing a technique that uses the special synchrotron X-ray light from the Swiss Light Source SLS to non-destructively digitize recordings from high-value historic audio tapes—including treasures from ...
General Physics
Apr 8, 2024
1
195
Near the entrance to Michael Levin's lab at Tufts, four deer antlers are mounted on wooden boxes. They represent an incredible feat of regeneration in mammals: Deer shed their antlers annually and regrow the bone, blood vessels, ...
Cell & Microbiology
Mar 25, 2024
0
13
When a total solar eclipse comes to the Dallas-Fort Worth area on April 8, and the moon starts to cover the sun in the sky, it may feel safe to sneak a peek without eclipse glasses. But experts say that staring at the sun ...
Space Exploration
Feb 5, 2024
0
5
Bone regeneration is a complex process, and existing methods to aid regeneration including transplants and growth factor transmissions face limitations such as the high cost. But recently, a piezoelectric material that can ...
Analytical Chemistry
Feb 1, 2024
0
45
Electrical deep brain stimulation (DBS) is a well-established method for treating disordered movement in Parkinson's disease. However, implanting electrodes in a person's brain is an invasive and imprecise way to stimulate ...
Bio & Medicine
Jan 18, 2024
0
16
Researchers at the University of California San Diego have developed a neural implant that provides information about activity deep inside the brain while sitting on its surface. The implant is made up of a thin, transparent ...
Bio & Medicine
Jan 11, 2024
1
100
Every search engine query, every AI-generated text and developments such as autonomous driving: In the age of artificial intelligence (AI) and big data, computers and data centers consume a lot of energy. By contrast, the ...
Nanomaterials
Dec 21, 2023
0
0
Researchers from SUTD have developed an advanced system of breast cancer cell detection with improved speed and sensitivity, using a viral mechanism to enhance the tool's sensing accuracy.
Bio & Medicine
Dec 19, 2023
0
6
Satellite and spacecraft operators may finally be able to detect small pieces of debris orbiting Earth using an approach proposed by researchers from the University of Michigan.
Astronomy
Dec 4, 2023
0
24
Plants in which an ion channel of the vacuole is hyperactive are extremely stressed and grow poorly. But the broad bean is an exception, as Würzburg researchers have discovered. Their research is published in the journal ...
Plants & Animals
Nov 24, 2023
0
1
In the fields of communications, signal processing, and in electrical engineering more generally, a signal is any time-varying or spatial-varying quantity.
In the physical world, any quantity measurable through time or over space can be taken as a signal. Within a complex society, any set of human information or machine data can also be taken as a signal. Such information or machine data (for example, the dots on a screen, the ink making up text on a paper page, or the words now flowing into the reader's mind) must all be part of systems existing in the physical world – either living or non-living.
Despite the complexity of such systems, their outputs and inputs can often be represented as simple quantities measurable through time or across space. In the latter half of the 20th century, electrical engineering itself separated into several disciplines, specializing in the design and analysis of physical signals and systems, on the one hand, and in the functional behavior and conceptual structure of the complex human and machine systems, on the other. These engineering disciplines have led the way in the design, study, and implementation of systems that take advantage of signals as simple measurable quantities in order to facilitate the transmission, storage, and manipulation of information.
This text uses material from Wikipedia, licensed under CC BY-SA
