This paper combines a data-rich environment with machine learning algorithm to provide new estimates of time-varying systematic expectational errors (“belief distortions”) embedded in survey responses. We find sizable distortions even for professional forecasters, all respondent-types overweighting the implicit judgmental component their forecasts relative what can be learned from publicly avai...

This article sheds light on the question of whether it is possible to create fairly accurate forecasts real oil prices. For this purpose, a multi-level machine learning model has been created analyze several sources heterogeneous data predict future The uses different types data: market condition data, titles, and transaction data. Then, they have processed be able load them into model. validat...

This work follows on from studies carried out by Jiles and Atherton magnetic hysteresis the magnetomechanical effect. The Jiles–Atherton equation, which models rate of change magnetization with respect to stress, was solved numerically in forward reverse directions for stress up 90 MPa, suggesting that stressing carbon steel will cause a lasting sample. confirmed experimentally measuring B-fiel...

For the machining of long and narrow surfaces when processing multiple pieces, planing technology is used, productivity which can be higher than that milling, although it relatively slow machining. The article aims to study degree influence geometry tool (the angle cutting-edge inclination tool-orthogonal rake), as well cutting conditions (cutting depth speed) on chip characteristics (temperatu...

In this study, S235JR (1.0037), 21NiCrMo2 (1.6523), C45 (1.0503), 42CrMo4 (1.7225) steels were coated with nickel, copper, silver, and tin. Then, the radiation shielding performances of uncoated investigated. The firstly designed by coating processes via electrolytic plating method on behalf Ni, Cu, Ag Sn metals. samples then irradiated radioactive sources for transmission gamma rays at 81–383 ...

In the 21 st century, numerical analysis is a proven tool for research and development of manufacturing processes. Mathematical modelling provides information about behaviour various materials during forming processes, instance. The real-world process therefore represented by an abstract mathematical model, on which calculations are performed. Three-roll skew rolling can be used grades steel. T...