scholarly journals Digitization of subsoil use technologies

2021 ◽  
Vol 1 ◽  
pp. 70-78
Author(s):  
Eduard A. Khopunov ◽  
Keyword(s):  
Simulation Models ◽  
Raw Material ◽  
Digital Model ◽  
Sources Of Information ◽  
Initial State ◽  
Processing Technologies ◽  
Mineral Raw Material ◽  
Ore Processing ◽  
Production Area ◽  
The Many

Introduction. Economy digitalization trends show that industries involved in mineral extraction and processing will sooner or later have to face the challenges of introducing new management technologies. Expected innovations deal with large amounts of data both in terms of object initial state characteristics and in tracking changes in its parameters at all stages of raw material transformation into a marketable product. Research methodology includes assessing factors determining industry digitalization, as well as studying production area readiness for new management technologies introduction. The difficulty is that mineral raw material extraction and processing is represented by a set of technologies. Exploration, deposit 78 "Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal". No. 2. 2021 ISSN 0536-1028 description, reserves assessment, processing technologies, utilization and storage of tailings, dumps, reclamation, etc. – all these processes belong to different branches of science and are not always linked into a single technological cycle. Results. The paper provides a detailed analysis of the structure and sources of information flows required to form a unified digital model of mineral processing. It is shown that the data unit responsible for the “ore processing procedures databases” is the least ready to be embedded in a single digital model. Conclusions. Despite the many problems associated with the use of digital technologies, there are no fundamental obstacles to mineral raw material processing simulation models creation, including deposit identification, rock mass formation and all stages of obtaining a commercial product.

DARCY RIBEIRO UNIVERSITY CAMPUS MAP – 2017- TECHNICAL NOTE

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Rafael Sanzio Araújo dos Anjos ◽  
Jose Leandro de Araujo Conceição ◽  
Jõao Emanuel ◽  
Matheus Nunes
Keyword(s):  
Spatial Data ◽  
Spatial Information ◽  
Technical Note ◽  
University Campus ◽  
Communication Tool ◽  
Sources Of Information ◽  
Data Manipulation ◽  
Geographic Space ◽  
The Many ◽  
New Generation

The spatial information regarding the use of territory is one of the many strategies used to answer and to inform about what happened, what is happening and what may happen in geographic space. Therefore, the mapping of land use as a communication tool for the spatial data made significant progress in improving sources of information, especially over the last few decades, with new generation remote sensing products for data manipulation.

scholarly journals Synthesizing published knowledge of boreal forest cover change for large-scale landscape dynamics modelling

2003 ◽  
Vol 79 (1) ◽  
pp. 132-146 ◽  
Author(s):  
Dennis Yemshanov ◽  
Ajith H Perera
Keyword(s):  
Boreal Forest ◽  
Large Scale ◽  
Forest Canopy ◽  
Forest Cover ◽  
Forest Succession ◽  
Simulation Models ◽  
Limiting Factors ◽  
Sources Of Information ◽  
Forest Cover Change ◽  
Discrete State

We reviewed the published knowledge on forest succession in the North American boreal biome for its applicability in modelling forest cover change over large extents. At broader scales, forest succession can be viewed as forest cover change over time. Quantitative case studies of forest succession in peer-reviewed literature are reliable sources of information about changes in forest canopy composition. We reviewed the following aspects of forest succession in literature: disturbances; pathways of post-disturbance forest cover change; timing of successional steps; probabilities of post-disturbance forest cover change, and effects of geographic location and ecological site conditions on forest cover change. The results from studies in the literature, which were mostly based on sample plot observations, appeared to be sufficient to describe boreal forest cover change as a generalized discrete-state transition process, with the discrete states denoted by tree species dominance. In this paper, we outline an approach for incorporating published knowledge on forest succession into stochastic simulation models of boreal forest cover change in a standardized manner. We found that the lack of details in the literature on long-term forest succession, particularly on the influence of pre-disturbance forest cover composition, may be limiting factors in parameterizing simulation models. We suggest that the simulation models based on published information can provide a good foundation as null models, which can be further calibrated as detailed quantitative information on forest cover change becomes available. Key words: probabilistic model, transition matrix, boreal biome, landscape ecology

Laboratory work in Science for the Blind

1932 ◽  
Vol 25 (3b) ◽  
pp. 48-49 ◽  
Author(s):  
Emily A. Burke
Keyword(s):  
Department Of Education ◽  
Laboratory Work ◽  
Sources Of Information ◽  
Carnegie Museum ◽  
Museum Exhibits ◽  
Science And Art ◽  
Western Pennsylvania ◽  
The Many ◽  
Science Classes

Many schools, for various reasons, find it necessary to go to considerable expense to accumulate and maintain nature and museum exhibits for the use of their pupils in science and art classes. The Western Pennsylvania School for the Blind, being located only two blacks from the Carnegie Library and Museum in Pittsburgh, is availing itself of the many opportunities offered by this proximity, rather than attempting the accumulation of a collection of its own. The teachers are urged to co-ordinate and supplement their work by actual and consistent use of the Museum exhibits. This has been facilitated by the whole-hearted cooperation of Miss Jane White, Assistant Curator of Education, and Mrs. Emily A. Burke, Docent in the Department of Education at the Museum. We feel that the establishment of library and museum habits in our pupils is also important, and so encourage them to seek these sources of information on their own initiative as well as in assigned classes. The use of Carnegie Museum exhibits by the science classes, under the direction of Mr. Fred A. Hunt, has inspired Mrs. Burke to set forth in the following article the ways and means by which she is rendering to us this valuable but gratuitous service. B. S. Joice, Superintendent, Western Pennsylvania School for the Blind.

scholarly journals Children’s ability to edit their memories when learning about the environment from credible and noncredible websites

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Kim P. Roberts ◽  
Katherine R. Wood ◽  
Breanne E. Wylie
Keyword(s):  
Environmental Sustainability ◽  
Choice Test ◽  
Multiple Choice Test ◽  
Sources Of Information ◽  
Older Children ◽  
Inaccurate Information ◽  
The Many ◽  
The Individual ◽  
Many Sources ◽  
Website Content

AbstractOne of the many sources of information easily available to children is the internet and the millions of websites providing accurate, and sometimes inaccurate, information. In the current investigation, we examined children’s ability to use credibility information about websites when learning about environmental sustainability. In two studies, children studied two different websites and were tested on what they had learned a week later using a multiple-choice test containing both website items and new distracters. Children were given either no information about the websites or were told that one of the websites (the noncredible website) contained errors and they should not use any information from that website to answer the test. In both studies, children aged 7- to 9-years reported information from the noncredible website even when instructed not to, whereas the 10- to 12-year-olds used the credibility warning to ‘edit out’ information that they had learned from the noncredible website. In Study 2, there was an indication that the older children spontaneously assessed the credibility of the website if credibility markers were made explicit. A plausible explanation is that, although children remembered information from the websites, they needed explicit instruction to bind the website content with the relevant source (the individual websites). The results have implications for children’s learning in an open-access, digital age where information comes from many sources, credible and noncredible. Education in credibility evaluation may enable children to be critical consumers of information thereby resisting misinformation provided through public sources.

scholarly journals Using Matrix-Product States for Open Quantum Many-Body Systems: Efficient Algorithms for Markovian and Non-Markovian Time-Evolution

Entropy ◽  
2020 ◽  
Vol 22 (9) ◽  
pp. 984
Author(s):  
Regina Finsterhölzl ◽  
Manuel Katzer ◽  
Andreas Knorr ◽  
Alexander Carmele
Keyword(s):  
Time Evolution ◽  
Nearest Neighbor ◽  
Matrix Product ◽  
Body System ◽  
Many Body ◽  
Initial State ◽  
Matrix Product States ◽  
Open Quantum ◽  
Many Body Systems ◽  
The Many

This paper presents an efficient algorithm for the time evolution of open quantum many-body systems using matrix-product states (MPS) proposing a convenient structure of the MPS-architecture, which exploits the initial state of system and reservoir. By doing so, numerically expensive re-ordering protocols are circumvented. It is applicable to systems with a Markovian type of interaction, where only the present state of the reservoir needs to be taken into account. Its adaption to a non-Markovian type of interaction between the many-body system and the reservoir is demonstrated, where the information backflow from the reservoir needs to be included in the computation. Also, the derivation of the basis in the quantum stochastic Schrödinger picture is shown. As a paradigmatic model, the Heisenberg spin chain with nearest-neighbor interaction is used. It is demonstrated that the algorithm allows for the access of large systems sizes. As an example for a non-Markovian type of interaction, the generation of highly unusual steady states in the many-body system with coherent feedback control is demonstrated for a chain length of N=30.

Processing of Non-Ferrous Metallurgy Waste Slag for its Complex Recovery as a Secondary Mineral Raw Material

2021 ◽  
Author(s):  
A. S. Kolesnikov ◽  
B. E. Serikbaev ◽  
A. L. Zolkin ◽  
G. S. Kenzhibaeva ◽  
G. I. Isaev ◽  
...  
Keyword(s):  
Ferrous Metallurgy ◽  
Raw Material ◽  
Secondary Mineral ◽  
Mineral Raw Material

Microorganisms in Bioflotation and Bioflocculation: Potential Application and Research Needs

2009 ◽  
Vol 71-73 ◽  
pp. 319-328 ◽  
Author(s):  
K. Hanumantha Rao ◽  
Annamaria Vilinska ◽  
I.V. Chernyshova
Keyword(s):  
Energy Charge ◽  
Surface Reactivity ◽  
Basic Knowledge ◽  
Primary Data ◽  
Great Promise ◽  
Mineral Surface ◽  
Processing Technologies ◽  
Ore Processing ◽  
Charge Potential ◽  
Mineral Beneficiation

Conventionally, physico-chemical methods are used in mineral processing for recovering value minerals from ores. The ageing of ore processing tailings and waste rocks, and mining tailings contamination by chemical reagents constitute a major threat to the environment. It is imperative to develop novel economically more efficient and environmentally benign methods of flotation and waste processing, exploiting the intriguing and exciting ability of bacteria to selectively modify the surface properties of solids. Microorganisms have not only facilitate hydrometallurgical leaching operations but have also show a great promise in mineral beneficiation processes such as flotation and flocculation. Several laboratory investigations revealed that microorganisms could function similar to traditional reagents. Microorganisms have a tremendous influence on their environment through the transfer of energy, charge, and materials across a complex biotic mineral-solution interface. The bio-modification of mineral surfaces involves the complex action of microorganism on the mineral surface. The manner, in which bacteria affect the surface reactivity and the mechanism of bacteria adsorption, is still unknown and accumulation of the primary data in this area is only starting. The bio-flotation and bio-flocculation processes concern the mineral response to the bacterium presence, which is essentially interplay between microorganism and the physicochemical properties of the mineral surface, such as the atomic and electronic structure, the net charge/potential, acid-base properties, and wettability of the surface. There is an urgent need for developing basic knowledge that would underpin biotechnological innovations in the natural resource (re)processing technologies that deliver competitive solutions.

Mineral raw material requirements and associated climate-change impacts of the French energy transition by 2050

2019 ◽  
Vol 208 ◽  
pp. 1198-1205 ◽  
Author(s):  
Antoine Beylot ◽  
Dominique Guyonnet ◽  
Stéphanie Muller ◽  
Stéphane Vaxelaire ◽  
Jacques Villeneuve
Keyword(s):  
Climate Change ◽  
Climate Change Impacts ◽  
Energy Transition ◽  
Raw Material ◽  
Mineral Raw Material ◽  
Material Requirements
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