Perturbation function is a mathematical term. It refers to a function that relates to both primal and dual problems. It is sometimes called the bifunction. The value function is also sometimes called the perturbation function.
Gene perturbation refers to changes in the activity or expression of genes, which can have significant effects on cellular function and development. These changes can disrupt normal cellular processes, leading to altered protein production, signaling pathways, and ultimately impacting the development and function of the cell. Gene perturbation can result in a variety of outcomes, including cell death, abnormal growth, or changes in cell behavior, all of which can have profound effects on overall cellular function and development.
Harmonic perturbation refers to a periodic external force or disturbance applied to a system that is close to its natural harmonic frequency. This perturbation can affect the behavior of the system, causing resonance or other dynamic responses that are not present in the absence of the perturbation. Understanding and analyzing harmonic perturbation is important in various fields such as physics, engineering, and biology.
Perturbation is a noun for anxiety or mental uneasiness; a cause of anxiety or mental uneasiness; or a deviation of system or moving object from its normal function or direction. Example sentence:His perturbation was a telltale sign that anyone could recognise and respond to.
We discovered that the perturbation was coming from a fight in the neighbor's yard.
Frank Herbert Brownell has written: 'Explicit perturbation formulae and convergence theorems' -- subject(s): Convergence, Perturbation theory (Mathematics), Perturbation (Mathematics)
Ji-Huan He has written: 'Perturbation methods' -- subject(s): Perturbation (Mathematics)
Anthropogenic perturbation refers to disturbances or disruptions to ecosystems and natural processes caused by human activities. This can include activities such as deforestation, pollution, habitat destruction, and climate change, which can have negative impacts on biodiversity, ecosystem services, and overall ecological balance.
Perturbation
Stephen M. Omohundro has written: 'Geometric perturbation theory in physics' -- subject(s): Differential Geometry, Perturbation (Mathematics), Perturbation (Quantum dynamics), Plasma (Ionized gases), Statistical mechanics
The doctor says, "A great perturbation in nature, to receive at once the benefit of sleep, and do the effects of watching!". "Perturbation" means a disturbance, and to the mind of the doctor, the disturbance in nature is the fact of sleepwalking, where one can be asleep but act as if one is awake. The perturbation in nature does not cause the sleepwalking, it IS the sleepwalking.
Common perturbation theory problems encountered in quantum mechanics include the calculation of energy shifts and wavefunction corrections for a system when a small perturbation is applied. Solutions to these problems involve using perturbation theory formulas to calculate the first-order and higher-order corrections to the energy levels and wavefunctions of the system. These corrections help to account for the effects of the perturbation on the system's behavior and provide a more accurate description of its quantum properties.
Time-independent perturbation theory is a method used in quantum mechanics to calculate the energy corrections of a quantum system due to the presence of a perturbing potential. It involves solving for the corrections to the eigenvalues and eigenstates of the unperturbed system using a series expansion in terms of the strength of the perturbation. This theory is particularly useful when the perturbation is small compared to the unperturbed Hamiltonian.