In inventory theory, the (Q,r) model is used to determine optimal ordering policies. It is a class of inventory control models that generalize and combine...

In reflection seismology, Q models are mathematical models used to study how the Earth affects seismic waves by measuring energy loss and speed changes...

combination: Q : S × A → R {\displaystyle Q:{\mathcal {S}}\times {\mathcal {A}}\to \mathbb {R} } . Before learning begins, ⁠ Q {\displaystyle Q} ⁠ is initialized...

In seismology, the Kolsky Q models are mathematical Q models developed by Herbert Kolsky to describe how seismic waves lose energy and change speed as...

model efficiency coefficient (NSE) is used to assess the predictive skill of hydrological models. It is defined as: NSE = 1 − ∑ t = 1 T ( Q o t − Q m...

search query. It is a theoretical model estimating the probability that a document dj is relevant to a query q. The model assumes that this probability of...

notable glamour models. Contents A B C D E F G H I J K L M N O P Q R S T U V W X Y Z List of pornographic performers by decade List of Playboy models...

{\displaystyle p} and q {\displaystyle q} are said to be logically equivalent if they have the same truth value in every model. The logical equivalence...

t q = D _ _ ∇ 2 q + R ( q ) , {\displaystyle \partial _{t}{\boldsymbol {q}}={\underline {\underline {\boldsymbol {D}}}}\,\nabla ^{2}{\boldsymbol {q}}+{\boldsymbol...

mathematical model is an abstract description of a concrete system using mathematical concepts and language. The process of developing a mathematical model is termed...

are: λ 1 = − ( r − q − 1 2 σ 2 ) + ( r − q − 1 2 σ 2 ) 2 + 2 σ 2 r σ 2 λ 2 = − ( r − q − 1 2 σ 2 ) − ( r − q − 1 2 σ 2 ) 2 + 2 σ 2 r σ 2 {\displaystyle...

The Kuramoto model (or Kuramoto–Daido model), first proposed by Yoshiki Kuramoto (蔵本 由紀, Kuramoto Yoshiki), is a mathematical model used in describing...

follows: Q ˙ = T i − T o R i + R 1 + R 2 + R o = T i − T 1 R i = T i − T 2 R i + R 1 = T i − T 3 R i + R 1 + R 2 = T 1 − T 2 R 1 = T 3 − T o R 0 {\displaystyle...

replenishment with backorders: (Q,r) model Demand varies deterministically over time: Dynamic lot size model or Wagner-Whitin model Demand varies deterministically...

= k q e q g r 2 ⋅ r 3 R 3 ⋅ cos ⁡ φ = b k q e q g R 3 {\displaystyle F_{\text{y}}={\frac {kq_{\text{e}}q_{\text{g}}}{r^{2}}}\cdot {\frac {r^{3}}{R^{3}}}\cdot...

d_{j}=(w_{1,j},w_{2,j},\dotsc ,w_{n,j})} q = ( w 1 , q , w 2 , q , … , w n , q ) {\displaystyle q=(w_{1,q},w_{2,q},\dotsc ,w_{n,q})} Each dimension corresponds to...

similarities. The notation MA(q) refers to the moving average model of order q: X t = μ + ε t + θ 1 ε t − 1 + ⋯ + θ q ε t − q = μ + ∑ i = 1 q θ i ε t − i + ε t ...

theoretical model. This can provide an assessment of goodness of fit that is graphical, rather than reducing to a numerical summary statistic. Q–Q plots are...

two most significant results of the Drude model are an electronic equation of motion, d d t ⟨ p ( t ) ⟩ = q ( E + ⟨ p ( t ) ⟩ m × B ) − ⟨ p ( t ) ⟩ τ...

In seismology, the Azimi Q models are mathematical Q models developed to study how the Earth reacts to seismic waves by measuring how these waves weaken...

units. For each unit, the transformer model learns three weight matrices: the query weights W Q {\displaystyle W^{Q}} , the key weights W K {\displaystyle...

p ′ , q ) {\displaystyle {\text{ARMA}}(p',q)} model is given by X t − α 1 X t − 1 − ⋯ − α p ′ X t − p ′ = ε t + θ 1 ε t − 1 + ⋯ + θ q ε t − q , {\displaystyle...

the Boltzmann distribution is exactly q ( x ) {\displaystyle q(x)} . Therefore, to model q ( x ) {\displaystyle q(x)} , we may start with a particle sampled...

water) can be modeled by a zero-order absorption rate (here Ring in units of mass over time): d Q g d t = F g ( C a r t − Q g P g V g ) + R i n g {\displaystyle...

The model is usually denoted ARMA(p, q), where p is the order of AR and q is the order of MA. The general ARMA model was described in the 1951 thesis of...

    = q ≡ 0 mod ⁡ 4 ,   q ≥ 8     1 2 ⨁ r = 2 1 q − 1 ⨁ s = 1 p − 1 R r , s ⊗ R ¯ r , s ⊕ 1 2 ⨁ r = 2 2 q − 2 ⨁ s = 1 p − 1 R r , s ⊗ R ¯ q − r , s  ...

diameters of the disk. Distances in this model are Cayley–Klein metrics. Given two distinct points p and q inside the disk, the unique hyperbolic line...

→ Q ⊨ ( P ∧ R ) → Q {\displaystyle P\to Q\models (P\land R)\to Q} Transitivity: ( P → Q ) ∧ ( Q → R ) ⊨ P → R {\displaystyle (P\to Q)\land (Q\to R)\models...

of the Bohr model with a radial quantization (condition by William Wilson, the Wilson–Sommerfeld quantization condition): ∫ 0 T p r d q r = n h , {\displaystyle...

the inventory level is q {\displaystyle q} , each unit of demand above q {\displaystyle q} is lost in potential sales. This model is also known as the newsvendor...