The ionosphere is a notable source of error that disrupts the accuracy of the global position system (GPS) signal to the ground by changing the speed and direction of the signal propagation and in the process causing a delay in the signal. Therefore, forecasting the ionospheric delay is very important to reduce the GPS positioning error. In this work, statistical Holt-Winter method was chosen d...

Exponential smoothing methods gave poor forecast accuracy in Fildes et al.’s study of telecommunications time series. We reexamine this study and show that parameter optimization improves the accuracy of the Holt and damped trend methods. Further improvement occurs when the time series are trimmed to eliminate irrelevant early data, and when the methods are fitted to minimize the MAD rather tha...

Forecasting is an art and a science predict events that will occur in the future based on data past. The ability of restaurant Management shows success taking advantage business opportunities optimal for interpreting past performance planning future. This research uses Triple HoltWinters Exponential Smoothing Multiplicative method sales forecasting. Holt-Winters Method has smallest percentage e...

COVER ARTICLE Atwater and Lewis et al. Si microwire-array solar cells PERSPECTIVE Park and Holt Recent advances in nanoelectrode achitecture for photochemical hydrogen production

Graph clustering is an important and difficult optimization problem that arises in Software Engineering (Rayside, Reuss, Hedges and Kontogiannis 2000, Koschke and Eisenbarth 2000, Tzerpos and Holt 2000), VLSI design (Alpert and Kahng 1995), Distributed and Parallel Processing (Kumar, Grama, Gupta and Karypis 1994), and in many other areas. We have developed a system (called HINTS) for graph clu...

Polarization-entangled photon pairs are generated using crossed Beta Barium Borate crystals analogous to Dehlinger and Mitchell’s method. The polarization state of the entangled pairs is projected onto the basis of two polarizers introduced in the signal and idler arms. The cosine-squared dependance of the probability amplitude of the entangled state on the relative polarizer angle is theoretic...

A Reconsideration of Gender Differences in Risk Attitudes This paper reconsiders the wide agreement that females are more risk averse than males providing a leap forward in its understanding. Thoroughly surveying the experimental literature we first find that gender differences are less ubiquitous than usually depicted. Gathering the microdata of an even larger sample of Holt and Laury replicat...