Current Control theory News and Events

Current Control theory News and Events, Control theory News Articles.
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RUDN University mathematicians applied 19th century ideas to modern computerized algebra systems
A team of mathematicians from RUDN University added new symbolic integration functionality to the Sage computerized algebra system. The team implemented ideas and methods suggested by the German mathematician Karl Weierstrass in the 1870s. (2020-11-25)

Identical evolution of isolated organisms
Palaeontologists at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and the University of Calgary in Canada have provided new proof of parallel evolution: conodonts, early vertebrates from the Permian period, adapted to new habitats in almost identical ways despite living in different geographical regions. The researchers were able to prove that this was the case using fossil teeth found in different geographical locations. (2020-11-23)

Six years in 120 pages: Researchers shed light on Ricci flows
Researchers from University of Science and Technology of China (USTC) proved two core conjectures in geometric analysis: Hamilton-Tian conjecture and the Partial C0-conjecture. It is a major breakthrough in geometric analysis, and it no doubt will lead many other related research projects. (2020-11-23)

Early weight gain in children linked to ability to produce the hormone leptin
The brain controls weight by measuring levels of leptin in the blood, which is released by fat cells. In adults, leptin treatments have so far proved ineffective at treating obesity. New genetics research by scientists at the University of Copenhagen suggests that leptin plays a stronger role in controlling the weight of children than in adults. (2020-11-23)

Biophysics - geometry supersedes simulations
Ludwig-Maximilians-Universitaet (LMU) in Munich physicists have introduced a new method that allows biological pattern-forming systems to be systematically characterized with the aid of mathematical analysis. The trick lies in the use of geometry to characterize the dynamics. (2020-11-20)

Genetic code evolution and Darwin's evolution theory should consider DNA an 'energy code'
Darwin's theory of evolution should be expanded to include consideration of a DNA stability ''energy code'' - so-called ''molecular Darwinism'' - to further account for the long-term survival of species' characteristics on Earth, according to Rutgers scientists. (2020-11-16)

Handles and holes in abstract spaces: how a material conducts electricity better
A new theory has succeeded in establishing a new relationship between the presence or absence of 'handles' in the space of the arrangements of atoms and molecules that make up a material, and the propensity of the latter to conduct electricity. The insulating materials 'equipped with handles' can conduct electricity as well as metals, while retaining typical properties of insulators, such as transparency. (2020-11-13)

Evolution favours new diseases of 'intermediate' severity
New epidemic diseases have an evolutionary advantage if they are of ''intermediate'' severity, research shows. (2020-11-11)

RUDN University physicist developed software solution to measure the black holes stability
Even if a black hole can be described with a mathematical model, it doesn't mean it exists in reality. Some theoretical models are unstable: though they can be used to run mathematical calculations, from the point of view of physics they make no sense. A physicist from RUDN University developed an approach to finding such instability regions. (2020-11-05)

Understanding the spread of infectious diseases
Physicists at Münster University (Germany) have shown in model simulations that the COVID-19 infection rates decrease significantly through social distancing. For this, they combined the dynamical density functional theory to describe interacting particles and the SIR model, a theory to describe the spread of infectious diseases. (2020-11-04)

Breakdown of gene coordination during aging suggests a substantial challenge to longevity
In a study published in the journal Nature Metabolism, researchers from Bar-Ilan University in Israel report evidence that supports, for the first time, a longstanding theory on the aging process in cells. Using a novel approach from physics, they developed a computational method that quantifies the coordination level between different genes. With this approach, they measured the gene activity of individual cells and compared cells from old and young subjects, discovering phenomena never before observed. (2020-11-02)

Covid-19 "super-spreading" events play outsized role in overall disease transmission
MIT researchers find Covid-19 super-spreading events, in which one person infects more than six other people, are much more frequent than anticipated, and that they have an outsized contribution to coronavirus transmission. (2020-11-02)

Physicists circumvent centuries-old theory to cancel magnetic fields
A team of scientists including two physicists at the University of Sussex has found a way to circumvent a 178-year old theory which means they can effectively cancel magnetic fields at a distance. They are the first to be able to do so in a way which has practical benefits. (2020-10-28)

Scientists explain the paradox of quantum forces in nanodevices
Researchers proposed a new approach to describe the interaction of metals with electromagnetic fluctuations (i.e., with random bursts of electric and magnetic fields). Researchers proposed a new approach to describe the interaction of metals with electromagnetic fluctuations (i.e., with random bursts of electric and magnetic fields). (2020-10-27)

War songs and lullabies behind origins of music
Love is not the primary reason humans developed music. A new evolutionary theory of the origins of music argues more evidence supports music coming from the need for groups to impress allies and foes, and for parents to signal their attention to infants. They also argue against the theory that making music arose out of a need for social bonding, or that it is ''auditory cheesecake'' a fancy evolutionary byproduct with no purpose. (2020-10-26)

Timekeeping theory combines quantum clocks and Einstein's relativity
Cool research story with connections to atomic clocks, Einstein and quantum mechanics. The research shows the 'spooky' interference that can impact even the most sophisticated clocks. (2020-10-23)

Like humans, aging wild chimpanzees value their more "positive" friendships most
Like humans, wild chimpanzees focus on fewer yet more meaningful friendships as they grow older, say researchers who studied male chimps over two decades. (2020-10-22)

Temperature evolution of impurities in a quantum gas
A new, Monash-led theoretical study advances our understanding of the role of thermodynamics in the 'quantum impurity' problem, which studies the behaviour of deliberately introduced atoms (ie, 'impurities') that behave as particularly 'clean' quasiparticles within a background atomic gas, allowing a controllable 'perfect test bed' study of quantum correlations. (2020-10-13)

A new interpretation of quantum mechanics suggests reality does not depend on the measurer
For 100 years scientists have disagreed on how to interpret quantum mechanics. A recent study by Jussi Lindgren and Jukka Liukkonen supports an interpretation that is close to classical scientific principles. (2020-10-08)

New measurements of the solar spectrum verify Einstein's theory of General Relativity
An international team of researchers led by the Instituto de Astrofísica de Canarias (IAC) has measured, with unprecedented accuracy, the gravitational redshift of the Sun, a change in frequency of the lines in the solar spectrum which is produced when the light escapes from the gravitational field of the Sun on its way to Earth. (2020-10-08)

A RUDN University physicist simplified the Einstein-lovelock theory for black holes
Allowing for quantum corrections, the Einstein-Lovelock theory describes black holes with an equation that contains an infinite number of terms. However, according to a RUDN University physicist, the geometry of a black hole in this theory can be presented in a compact form, and a limited number of terms can suffice to describe the observed values. This could help scientists study black holes in theories with quantum corrections to Einstein's equations. (2020-10-03)

Einstein's description of gravity just got much harder to beat
Astrophysicists put general relativity to a new test with black hole images. (2020-10-01)

Helium, a little atom for big physics
Helium is the simplest multi-body atom. Its energy levels can be calculated with extremely high precision only relying on a few fundamental physical constants and the quantum electrodynamics (QED) theory. This makes the helium atom a very good platform for testing QED and these constants. A review of recent studies of helium atom precision spectroscopy towards this direction is presented in the National Science Review. (2020-09-28)

Switching up: Marine bacteria shift between lifestyles to get the best resources
Researchers from the University of Tsukuba and ETH Zurich have found that marine bacteria exploit resource patches efficiently by switching between attached and planktonic lifestyles, and fine-tuning the time spent on patches depending on their quality. Bacteria stayed longer on higher-quality patches, as predicted by patch use theory. Future studies in this area could help to predict the role of marine bacteria in the global carbon cycle. (2020-09-25)

Gravity causes homogeneity of the universe
Gravity can accelerate the homogenization of space-time as the universe evolves. This insight is based on theoretical studies of the physicist David Fajman of the University of Vienna. The results have been published in the journal 'Physical Review Letters'. (2020-09-24)

A question of reality
Physicist Reinhold Bertlmann of the University of Vienna, Austria has published a review of the work of his late long-term collaborator John Stewart Bell of CERN, Geneva in EPJ H. This review, 'Real or Not Real: that is the question', explores Bell's inequalities and his concepts of reality and explains their relevance to quantum information and its applications. (2020-09-24)

Young physicist 'squares the numbers' on time travel
Paradox-free time travel is theoretically possible, according to the mathematical modelling of a prodigious University of Queensland undergraduate student. (2020-09-23)

New theory predicts movement of different animals using sensing to search
A Northwestern University research team has developed a new theory that can predict the movement of an animal's sensory organs -- such as eyes, ears and nose -- while searching for something vital to its life. (2020-09-22)

Multiphase buffering by ammonia explains wide range of atmospheric aerosol acidity
Anthropogenic ammonia emissions and the water content matter more than dry particle composition for the acidity of atmospheric aerosols in populated regions. (2020-09-10)

Lineshape-tailoring of coupled plasmonic systems based on first principle
Coupled photonic systems attract intensive attentions, but available theories either cannot reveal the underlying physics or are empirical in nature. Scientists from Fudan University derive a rigorous theory from first principles, with all parameters directly computable without fitting. They experimentally illustrate how to ''design'' the line-shapes of photonic systems with their theory, including the realization of a completely ''dark'' mode. With profound physics revealed, the theory offers a powerful tool for fast designing functional devices. (2020-09-08)

Vortex top-hats emerge in superfluids
An Australian-led study provides new insight into the behaviour of rotating superfluids, including the emergence of a 'top hat' shaped super-vortex phenomenon. Fundamental understanding of the behaviour of vortices in superfluids (a 'zero viscosity' quantum material in which electrical current can flow without resistance) is vital to FLEET's search for ultra-energy efficient electronics based on superfluid transistors. (2020-09-07)

New mathematical method shows how climate change led to fall of ancient civilization
A Rochester Institute of Technology researcher developed a mathematical method that shows climate change likely caused the rise and fall of an ancient civilization. In an article recently featured in the journal Chaos: An Interdisciplinary Journal of Nonlinear Science, Nishant Malik, assistant professor in RIT's School of Mathematical Sciences, outlined the new technique he developed and showed how shifting monsoon patterns led to the demise of the Indus Valley Civilization, a Bronze Age civilization contemporary to Mesopotamia and ancient Egypt. (2020-09-03)

Understanding the link between hearing loss and dementia
Scientists have developed a new theory as to how hearing loss may cause dementia and believe that tackling this sensory impairment early may help to prevent the disease. (2020-09-01)

Eye of a fly: Researchers reveal secrets of fly vision for rapid flight control
By examining how fruit flies use eye movements to enhance flight control with a staggeringly fast reaction speed -- about 30 times faster than the blink of an eye -- Penn State researchers have detailed a framework to mimic this ability in robotics. (2020-09-01)

New theory hints at more efficient way to develop quantum algorithms
A new theory could bring a way to make quantum algorithm development less of an accidental process, say Purdue University scientists. (2020-08-31)

USU mathematicians unravel a thread of string theory
Thomas Hill and Andreas Malmendier of Utah State University, and Adrian Clingher of the University of Missouri-St. Louis, explore a string duality between F-theory and heterotic string theory in eight dimensions in paper published in 'Letters in Mathematical Physics.' (2020-08-17)

Layer of nanoparticles could improve LED performance and lifetime
Adding a layer of nanoparticles to LED designs could help them produce more light for the same energy, and also increase their lifetime. (2020-08-07)

COVID-19 may have a longer incubation period, suggests probability analysis of Wuhan cases
By applying the renewal theory in probability to reduce recall bias in initial case reports, scientists have come up with a new estimate for the incubation period of COVID-19. Their mean estimate of 7.76 days. (2020-08-07)

Study suggests optimal social networks of no more than 150 people
New rules of engagement on the battlefield will require a deep understanding of networks and how they operate according to new Army research. Researchers confirmed a theory that find that networks of no more than 150 are optimal for efficient information exchange. (2020-08-04)

Using games to study law of motions in mind
At Japan Advanced Institute of Science and Technology, researchers have successfully established relationships between games and law of motions in mind through analogy of physics and game refinement theory. (2020-07-31)

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