The Effect of Combined Loads on the Destruction of Rocks with a Granular Structure

2021 ◽  
Vol 1022 ◽  
pp. 1-6
Author(s):  
Victoria S. Romanova ◽  
Viktor V. Gabov
Keyword(s):  
Ultimate Strength ◽  
Experimental Research ◽  
High Frequency ◽  
Granular Structure ◽  
Common Method ◽  
Crushed Material ◽  
Combined Loads ◽  
Rock Disintegration ◽  
The Common ◽  
Destruction Of Rocks

The article addresses the features of rock disintegration based on the principles of selective and preferential destruction in high-frequency cone vibratory crushers with a free-turning inner cone. Based on the common method for determining the ultimate strength of rocks, a method for investigating the process of ore destruction under repeated and versatile influences has been proposed depending on the structure of the crushed material. The results of an experimental research of the destruction of rock samples on a press with limited force are given.

scholarly journals Multivariate and Online Prediction of Closing Price Using Kernel Adaptive Filtering

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Shambhavi Mishra ◽  
Tanveer Ahmed ◽  
Vipul Mishra ◽  
Manjit Kaur ◽  
Thomas Martinetz ◽  
...  
Keyword(s):  
Adaptive Filtering ◽  
Stock Prices ◽  
High Frequency ◽  
Time Windows ◽  
Stock Index ◽  
Level Data ◽  
Traditional Classification ◽  
Regression Problems ◽  
The Common ◽  
Online Prediction

This paper proposes a multivariate and online prediction of stock prices via the paradigm of kernel adaptive filtering (KAF). The prediction of stock prices in traditional classification and regression problems needs independent and batch-oriented nature of training. In this article, we challenge this existing notion of the literature and propose an online kernel adaptive filtering-based approach to predict stock prices. We experiment with ten different KAF algorithms to analyze stocks’ performance and show the efficacy of the work presented here. In addition to this, and in contrast to the current literature, we look at granular level data. The experiments are performed with quotes gathered at the window of one minute, five minutes, ten minutes, fifteen minutes, twenty minutes, thirty minutes, one hour, and one day. These time windows represent some of the common windows frequently used by traders. The proposed framework is tested on 50 different stocks making up the Indian stock index: Nifty-50. The experimental results show that online learning and KAF is not only a good option, but practically speaking, they can be deployed in high-frequency trading as well.

Collapse Strength of Damaged Plating

2008 ◽  
Author(s):  
Plamen I. Nikolov
Keyword(s):  
Compressive Strength ◽  
Residual Stresses ◽  
Ultimate Strength ◽  
Fe Simulation ◽  
Compressive Loading ◽  
Simultaneous Presence ◽  
Bulk Carrier ◽  
Residual Deflection ◽  
Collapse Strength ◽  
The Common

In this paper, based on Finite Element (FE) simulation, the ultimate strength of damaged continuous plating is studied considering the combined effect of residual deflections and stresses. Firstly, damage over plating is simulated resulting to residual deflection in prescribed shape and magnitude accompanied by residual stresses. Then compressive loading is applied and the effect of simultaneous presence of both residual deflections and residual stresses on the plating ultimate strength is studied. It is found that (1) the compressive strength may be significantly overestimated when the damage related residual stresses are not considered, (2) a larger magnitude of initial dishing does not necessary result to a lower ultimate strength. It is shown that the simplified methods in the Common Bulk Carrier Rules need further improvements.

Factors responsible for a karyotypic polymorphism in the common shrew, Sorex araneus

1986 ◽  
Vol 229 (1256) ◽  
pp. 277-298 ◽  
Keyword(s):  
High Frequency ◽  
Common Shrew ◽  
Sorex Araneus ◽  
General Terms ◽  
Chromosome Arm ◽  
The Common ◽  
Common Shrew Sorex Araneus ◽  
The 1950S ◽  
Monobrachial Homology

A Robertsonian karyotypic polymorphism in the common shrew in the Oxford area, first described in the 1950s, was re-examined. The polymorphism involves chromosome arm combinations no and pr (characteristic of the Oxford karyotypic race), ko (characteristic of the Hermitage karyotypic race) and jl (found in both races). The poly- morphism for jl was sporadic along a north-south transect through the Oxford area, with the frequency of the twin-acrocentric morph never exceeding 10%. The frequency of the Oxford race-specific metacentrics decreased and the frequency of the Hermitage race-specific metacentric ko increased from north to south along the transect. At a latitudinal grid reference of about 180 km, there was a high frequency of individuals with chromosome arms k, n, o and q in the ancestral acrocentric state. This was coincident with the area of occurrence of ko-kq and ko-no OxfordHermitage hybrids. Such hybrids are double Robertsonian heterozygotes with monobrachial homology and are likely to suffer reduced fertility in consequence. It is proposed that this is a source of selection against the monobrachial hybrids and hence results in an increase in frequency of the acrocentric morphs. This scheme goes some way to explain the dines of polymorphism for arm combinations kq, and ko, but it is suggested that other selective factors are involved. It cannot explain the cline of polymorphism for pr, which is in general terms similar to that for kq and no, but is more shallow and centred further north.

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