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Wyświetlanie 1-3 z 3
Tytuł:
4D gas geological research on coal seam with gas hazard potential in mining panel
Autorzy:
Cui, Hongqing
He, Xin
Wang, Zehua
Powiązania:
https://bibliotekanauki.pl/articles/2201387.pdf
Data publikacji:
2022
Wydawca:
Główny Instytut Górnictwa
Tematy:
gas geology
gas hazard prevention
small geological structure
fine geological survey
4D analysis
geologia gazowa
zapobieganie zagrożeniom gazowym
mała struktura geologiczna
szczegółowe badania geologiczne
analiza 4D
Opis:
According to regulations of the mining industry in China, it is necessary to carry out gas hazard prevention projects in advance when mining coal seams with gas hazard potential, and gas geological research should be taken as the basic work for optimal design and effective construction of gas hazard prevention projects. Research on coal seam with gas hazard potential have shown that anomalous geological area could be the gas hazard potential area as well, where superimposed tectonic and mining stress field usually results in tectonically disturbed coal and pressured gas. A 4D gas geological research method is used to find out the anomalous geological area and assess its gas hazard potential. The method covers two ranges of gas geological research: fine geological survey and 4D analysis. The former includes a comprehensive prospect of concealed small geological anomalies (such as small fault, small fold and coal thickness variation) by use of gas extraction projects; The latter includes a dynamic forecast of gas hazard potential from space-time perspective based on numerical simulation analysis on additional stress fields around small geological structures beyond coal mining face. Its research benefit the optimal design and effective implementation of gas hazard prevention measures in coal mining panel with high coal and gas outburst potential.
Źródło:
Journal of Sustainable Mining; 2022, 21, 2; 112--119
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic strategies used by companies dealing with information goods, based on software example
Autorzy:
Andrzejuk, A.
Powiązania:
https://bibliotekanauki.pl/articles/94811.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
economic models
economic strategies
information good
market analysis
after-effect
cinema 4d
YouTube
Opis:
In this article, analysis was conducted on companies involved in production and trade of information goods. The research offers insight into methods of conducting business in information goods sector, which involves intellectual products such as, video tutorials, templated 3d models etc. related to professional graphics software packages, in this case Adobe After Effects and Cinema 4d. The paper explores how firms make use of special economic strategies, as described by Varian and Shapiro, particularly useful for trade in intellectual property products. An attempt was carried out to establish a connection between the number of strategies used by companies, and the number of potential clients which determine the success of a company. For that purpose a proxy system was contrived. The YouTube search engine was used as a way of finding required companies.
Źródło:
Information Systems in Management; 2016, 5, 2; 161-174
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlations of somatic traits and postural defects in girls and boys aged 10–12
Autorzy:
Wilczyński, Jacek
Bieniek, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/306297.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
wady postawy
cechy somatyczne
impedancja bioelektryczna
dzieci
somatic features
variables of postural defects
bioelectrical impedance analysis
Diers formetric III 4D
Opis:
The aim of the study was to analyse correlations between somatic features and variables of postural defects in girls and boys aged 10–12. Methods: The study included 301 children aged 10–12. Variables of somatic features were assessed using the method of bioelectrical impedance analysis – BIA, which consists of the evaluation of resistance to the flow of an electric current. Body posture was examined via the optoelectronic method – Diers formetric III 4D – using raster stereography. Results: The majority of participants demonstrated proper somatic features. Over half of the studied children had scoliotic posture, while a small group comprised those with scoliosis. Cases of reduced kyphosis and shallowed lordosis were also observed. Significant relationships were noted between somatic features and postural defect variables. Conclusion: Body posture is a psychomotor habit that is associated with somatic development, composition and body structure. Along proper body composition and somatic structure, shaping the habit of correct posture is much easier. Both in the prevention and correction of postural defects, one should gradually move away from the unilateral, usually singlecomponent therapeutic effect. An approach considering both somatic and morphological as well as neurophysiological, emotionalvolitional and environmental factors seems to be appropriate.
Źródło:
Acta of Bioengineering and Biomechanics; 2019, 21, 1; 79-86
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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