Results 111 to 120 of about 4,981,556 (256)
Invertibility Conditions for Exponential Smoothing Models [PDF]
In this article we discuss invertibility conditions for some state space models, including the models that underly simple exponential smoothing, Holt's linear method, Holt-Winters' additive method and damped trend versions of Holt's and Holt-Winters ...
Rob J. Hyndman +2 more
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A PROOF OF THE FACTORIAL APPROXIMATION VIA THE EXPONENTIAL DISTRIBUTION
Tạp chí Khoa họcThe factorial of a natural number n, denoted n!, is defined as the product of natural numbers from 1 to n. This is a familiar concept to students. Although this concept is defined simply, the function n!
Phan Thi Tuyet∗ , Pham Tien Dung, Ho Cong Manh Duc, Nguyen Hoang Ha, Nguyen Thi Thuy Trang, Dang Viet Tuan
doaj +1 more source
X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites
Advanced Functional Materials, EarlyView.We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim +21 more
wiley +1 more source
Half logistic-truncated exponential distribution: Characteristics and applications. [PDF]
PLoS One, 2023 Gul A +5 more
europepmc +1 more source
Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies
Advanced Functional Materials, EarlyView.The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley +1 more source
Some Nonlinear Exponential Smoothing Models are Unstable [PDF]
This paper discusses the instability of eleven nonlinear state space models that underly exponential smoothing. Hyndman et al. (2002) proposed a framework of 24 state space models for exponential smoothing, including the well-known simple exponential ...
Rob J Hyndman, Muhammad Akram
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Comrade Black Distribution [February 1998 catalogue]
, 1998 The catalog of a D.I.Y. retail distributor of political and small press books and pamphlets. Started in 1996, CB Distribution is an effort to counter the homogeneity of political and artistic thought that dominates the mainstream media.
Comrade Black Distribution
core +1 more source
Statistical Inference of the Mixed Exponential–Beta Distribution
MathematicsThe classical exponential (Exp) distribution may have limited capability in describing asymmetric lifetime data and observations with different tail characteristics. In this paper, a new extended exponential model, called the Mixed Exponential–Beta (MEB)
Yuqi Zhao +3 more
doaj +1 more source
Advances in Sustainable and Wearable Textile Based Soft Robotics
Advanced Functional Materials, EarlyView.This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas +6 more
wiley +1 more source
On the Conjecture of Kochar and Korwar [PDF]
In this paper, we solve for some cases a conjecture by Kochar and Korwar (1996) in relation with the normalized spacings of the order statistics related to a sample of independent exponential random variables with different scale parameter.
Michael P. Wiper +2 more
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