All articles starting with D

Dynamic logic (computer science)

Dynamic logic is a family of modal logics whose modalities are indexed by programs, generalizing box and diamond; its propositional variant PDL was introduced by Fischer and Ladner in 1979.

Oct 21, 2026

Dynamic Maze

Dynamic Maze (다이나믹 메이즈) is a South Korean indoor mission-maze attraction chain by Creative Tong, with branches in Seoul Insadong, Sokcho, Jeju, and Busan; visitors clear 15-16 puzzle and obstacle stages in about 30-40 minutes.

Dynamic mechanical analysis

Dynamic mechanical analysis (DMA), also called dynamic mechanical thermal analysis (DMTA), applies oscillatory stress or strain to measure a material's viscoelastic properties across temperature or frequency.

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 mode decomposition

Dynamic mode decomposition (DMD) is a data-driven technique, proposed by Peter Schmid in 2008, that decomposes snapshot sequences into modes, each with one frequency and growth rate.

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 network analysis

Dynamic network analysis (DNA) is a family of methods in social network analysis for modeling networks whose nodes, ties, and attributes change over time rather than as static snapshots.

Dynamic nuclear polarization

Dynamic nuclear polarization (DNP) is a magnetic resonance technique that transfers the large spin polarization of unpaired electrons to atomic nuclei, amplifying NMR signals by orders of magnitude.

Dynamic panel model

The dynamic panel data model, or dynamic panel data model, is a panel regression with a lagged dependent variable, estimated consistently by Arellano–Bond difference GMM or system GMM.

Dynamic PET

Dynamic PET is a nuclear medicine imaging method that records PET data continuously after tracer injection, fitting tracer kinetics to quantify physiological rate constants rather than a single static image.

Dynamic plasticity

Dynamic plasticity is the study of permanent deformation of solids at high strain rates and under shock loading, studied with tests like the split Hopkinson pressure bar.

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 posturography

Dynamic posturography is a clinical assessment that measures postural sway and balance reactions while visual and support-surface cues are perturbed, quantifying the sensory and motor contributions to balance.

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 pressure

Dynamic pressure, also known as velocity pressure or wind pressure, is half the fluid density times flow velocity squared, equal to the kinetic energy per unit volume of the flow.

Dynamic pricing

Dynamic pricing is the practice of adjusting prices frequently in response to market conditions, using demand forecasting and optimization, as pioneered by American Airlines' yield management.

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 range

Dynamic range is the ratio between the largest and smallest signal a system can detect or reproduce without distortion, expressed in decibels and spanning audio, radar, imaging, and scientific instruments.

Dynamic range compression

Dynamic range compression (DRC), also called audio level compression, is an audio signal processing technique that narrows the difference between loud and quiet passages of a signal.

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 rupture simulation

Dynamic rupture simulation is a computational seismology method that numerically models spontaneous earthquake fault rupture by solving for stress, friction, and wave propagation, unlike kinematic models.

Dynamic semantics

Dynamic semantics is a view of natural language meaning in which a sentence's meaning is an instruction to update the conversational context, not a set of truth conditions.

Dynamic shear rheometer

A dynamic shear rheometer (DSR) is a laboratory instrument that measures viscoelastic properties by oscillating a thin sample between parallel plates, standard for asphalt binders.

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.