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Dynamic braking
Dynamic braking is a railway braking method in which traction motors act as generators to slow the train, with energy dissipated as heat or returned regeneratively.
Dynamic calibration
Dynamic calibration is a metrology method for characterizing how a sensor responds to time-varying or transient inputs rather than steady ones, yielding frequency response, phase, and damping ratio.
Dynamic community detection
Dynamic community detection is a family of network analysis algorithms that tracks how communities of densely connected nodes form, change, merge, and split over time in time-varying graphs.
Dynamic compaction
Dynamic compaction is a ground improvement method that densifies loose soils and fills by repeatedly dropping heavy tampers from a crane, used on embankments, landfills, reclaimed land, and liquefaction-prone sands.
Dynamic Containment (National Grid ESO)
Dynamic Containment is a fast frequency response service launched by National Grid ESO in Great Britain on 30 September 2020 to arrest large post-fault frequency changes.
Dynamic covalent bond
A dynamic covalent bond (DCB) is a covalent bond that reversibly forms, breaks, or exchanges under stimuli like heat, pH, or catalysts, combining covalent strength with adaptability.
Dynamic covalent polymers
Dynamic covalent polymers are polymers built from, or crosslinked by, reversible covalent bonds that break and reform under heat, light, or pH, enabling self-healing, shape memory, and reprocessability.
Dynamic dispatch
Dynamic dispatch, also called dynamic method dispatch or runtime dispatch, is the runtime selection of a polymorphic operation's implementation based on the object's actual type.
Dynamic DNS
Dynamic DNS (DDNS) is the automatic updating of Domain Name System records as a host's IP address changes, so a stable hostname keeps pointing at it, defined by RFC 2136 in 1997.
Dynamic fault tree
A dynamic fault tree (DFT) is a reliability model that extends static fault trees with time- and sequence-dependent gates, so failure can depend on the order components fail.
Dynamic frequency selection
Dynamic frequency selection (DFS) is a spectrum-sharing mechanism requiring Wi-Fi devices in the 5 GHz band to detect radar signals and vacate the channel within 10 seconds.
Dynamic gain equalizer
A dynamic gain equalizer (DGE), also called a dynamic gain-flattening filter, is an optical component that keeps all DWDM wavelength channels at comparable power levels.
Dynamic graph learning
Dynamic graph learning, also known as dynamic graph representation learning, is a machine learning approach that learns representations of graphs whose nodes and edges change over time.
Dynamic Host Configuration Protocol
The Dynamic Host Configuration Protocol (DHCP) is a client-server network protocol that automatically assigns IP addresses and settings like subnet mask, gateway, and DNS servers to devices, defined for IPv4 by RFC 2131 in 1997.
Dynamic line rating
Dynamic line rating (DLR) is a power-systems technique that sets an overhead transmission line's capacity from real-time weather, typically raising usable capacity 10 to 30% over static ratings.
Dynamic load management
Dynamic load management, also called dynamic load balancing, controls electric vehicle charging power in real time from live site measurements, keeping total demand within electrical limits while using available capacity fully.
Dynamic memory allocation
Dynamic memory allocation is a programming technique that reserves and releases memory for data structures while a program runs, rather than fixing their sizes at compile time.
Dynamic modulus (asphalt mixtures)
The dynamic modulus of an asphalt mixture, written |E|, measures asphalt concrete stiffness across temperatures and loading rates, and is a required stiffness input to the MEPDG.
Dynamic movement primitive
A dynamic movement primitive (DMP) is a mathematical formulation in robotics that represents movements as stable nonlinear dynamical systems, with trajectory shapes learned from demonstrations.
Dynamic multi-objective optimization
Dynamic multi-objective optimization (DMO) is the study of methods that track and update Pareto-optimal trade-off solutions while a problem's objectives or constraints change over time, using evolutionary algorithms.
Dynamic point selection
Dynamic point selection (DPS) is a downlink coordinated multi-point (CoMP) transmission scheme in cellular networks in which a user's data is sent from one cooperating transmission point, chosen dynamically.
Dynamic positioning
Dynamic positioning is a marine control method that automatically holds a vessel's position and heading using its own thrusters, without anchors, typically within 1 to 2 meters.
Dynamic power cable
A dynamic power cable is a submarine power cable connecting a floating offshore structure, usually a floating wind turbine, to the seabed while moving with waves and currents.
Dynamic program analysis
Dynamic program analysis is a software analysis method that examines a program while it executes, using runtime information from instrumentation to detect bugs, performance problems, and security vulnerabilities.
Dynamic programming
Dynamic programming is an algorithm design method, developed by Richard Bellman at RAND in the early 1950s, that solves optimization problems by breaking them into overlapping subproblems and reusing stored results.
Dynamic random-access memory
Dynamic random-access memory, or DRAM, is a volatile semiconductor memory storing each bit as charge on a single transistor and capacitor; its density makes it the main memory of most computers.
Dynamic relaxation
Dynamic relaxation is an iterative numerical method that solves a structure's static equilibrium equations by simulating a damped dynamic process, used mainly for form-finding of tension structures.
Dynamic soaring
Dynamic soaring is a flight technique in which an unpowered glider or bird gains energy from wind shear by repeatedly climbing and descending across the shear layer while turning.
Dynamic Source Routing
Dynamic Source Routing (DSR) is a reactive routing protocol for wireless ad hoc networks in which each packet carries its complete route, standardized as RFC 4728.
Dynamic state estimation
Dynamic state estimation is a family of filtering methods that estimate the time-varying hidden state of a dynamic system from noisy measurements, one time step at a time.