Exponential smoothing technique is one of the most important quantitative techniques in forecasting. The accuracy of forecasting of this technique depends on exponential smoothing constant. Choosing an appropriate value of exponential smoothing constant is very crucial to minimize the error in forecasting. This paper addresses the selection of optimal value of exponential smoothing constant to ...

We address a single-machine scheduling problem where the objective is to minimize the weighted mean absolute deviation of job completion times from their weighted mean. This problem and its precursors aim to achieve the maximum admissible level of service equity. It has been shown earlier that the unweighted version of this problem is NP-hard in the ordinary sense. For that version, a pseudo-po...

In 2017 to 2020 the Jakarta Islamic Index (JII) showed a positive trend and was quite stable compared LQ45 index. The selection of JII stock index in this study is intended obtain maximum profits. Investors are expected create series portfolios get profit. One ways identify stocks for portfolio formation use factor analysis. Factor analysis used summarize large number variables into new, smalle...

In this work, the primary compressive strength components of human femur trabecular bone are qualitatively assessed using image processing and wavelet analysis. The Primary Compressive (PC) component in planar radiographic femur trabecular images (N=50) is delineated by semi-automatic image processing procedure. Auto threshold binarization algorithm is employed to recognize the presence of mine...

This article presents deviation based exponentially weighted moving average control charts to monitor type-I censored data. Due practical applications, this study considers Weibull distribution assess the performance of proposed memory-type charts. The observations are replaced with conditional expected value (CEV), median (CM), and standard (CSD) Various shifts, smoothing weights, censoring ra...

In this paper we argue on the use of the mean absolute deviation in 1D random walk as opposed to the commonly accepted standard deviation. It presents an in detail derivation of the closed-form formula for the 1D mean absolute distance, including the proof by induction. The limit for the infinite number of steps is included.

objectives: knowledge about gender differences in intra-limb coordination during walking provides insight into the adaptability of central nervous system for controlling gait in older adults. we assessed the variability and phase dynamic of the intra-limb coordination in older men and women during walking. methods: twenty two older people, 11 female and 11 male, participated in this study. they...