scholarly journals Comparative analysis of morphological, mineralogical and spectral properties of cryoconite in Jakobshavn Isbræ, Greenland, and Canada Glacier, Antarctica

2013 ◽  
Vol 54 (63) ◽  
pp. 147-157 ◽  
Author(s):  
M. Tedesco ◽  
C.M. Foreman ◽  
J. Anton ◽  
N. Steiner ◽  
T. Schwartzman
Keyword(s):  
Comparative Analysis ◽  
Visible Region ◽  
Mineralogical Composition ◽  
Infrared Region ◽  
Primary Role ◽  
Dry Valleys ◽  
Infrared Wavelengths ◽  
Shortwave Infrared ◽  
The Antarctic

AbstractWe report the results of a comparative analysis focusing on grain size, mineralogical composition and spectral reflectance values (400-2500 nm) of cryoconite samples collected from Jakobshavn Isbræ, West Greenland, and Canada Glacier, McMurdo Dry Valleys, Antarctica. The samples from the Greenland site were composed of small particles clumped into larger rounded agglomerates, while those from the site in Antarctica contained fragments of different sizes and shapes. Mineralogical analysis indicates that the samples from Jakobshavn Isbræ contained a higher percentage of quartz and albite, whereas those from Canada Glacier contained a higher percentage of amphibole, augite and biotite. Spectral measurements confirmed the primary role of organic material in reducing the reflectance over the measured spectrum. The reflectance of the samples from the Antarctic site remained low after the removal of organic matter because of the higher concentration of minerals with low reflectance. The reflectance of dried cryoconite samples in the visible region was relatively low (e.g. between ∼0.1 and ∼0.4) favouring increased absorbed solar radiation. Despite high reflectance values in the shortwave infrared region, the effect of the presence of cryoconite is negligible at infrared wavelengths where ice reflectance is low.

The Role of the Zakat System during the Colonial-period in Malaysia and Uzbekistan: A Comparative Analysis

2017 ◽  
Vol 04 ◽  
pp. 40-54
Author(s):  
Avazbek Ganiyev Oybekovich ◽  
◽  
Hassan Shakeel Shah ◽  
Mohammad Ayaz ◽  
◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Colonial Period

The role of graining in ensuring food security

2020 ◽  
pp. 75-79
Author(s):  
R. M. Gambarova
Keyword(s):  
Food Security ◽  
Comparative Analysis ◽  
Systems Approach ◽  
Point Of View ◽  
Government Support ◽  
Grain Production ◽  
The Government ◽  
Favorable Conditions ◽  
Grain Farms

Relevance. Grain is the key to strategic products to ensure food security. From this point of view, the creation of large grain farms is a matter for the country's selfsufficiency and it leading to a decrease in financial expense for import. Creation of such farms creates an abundance of productivity from the area and leads to obtaining increased reproductive seeds. The main policy of the government is to minimize dependency from import, create abundance of food and create favorable conditions for export potential.The purpose of the study: the development of grain production in order to ensure food security of the country and strengthen government support for this industry.Methods: comparative analysis, systems approach.Results. As shown in the research, if we pay attention to the activities of private entrepreneurship in the country, we can see result of the implementation of agrarian reforms after which various types of farms have been created in republic.The role of privateentrepreneurshipinthedevelopmentofproduction is great. Тhe article outlines the sowing area, production, productivity, import, export of grain and the level of selfsufficiency in this country from 2015 till 2017.

Sports Photography and Historical Development

2018 ◽  
Vol 5 (1) ◽  
pp. 93-115
Author(s):  
Miloš Stamenković
Keyword(s):  
Historical Development ◽  
Emotional Reaction ◽  
Main Role ◽  
Primary Role

SummarySports photography undoubtedly has a significant place in sports press and publicism. It’s main and primary role is to present sports to the readers as art, which it is. Sport is characterized by dynamic and varied movements, and the main role of sports photography is reflected in the fact that it is in this way that sport shows its essence. Having in mind that photography tells more than a thousand words it sends a clear message to the reader as well to people who are informed about events via sports portals. Sports photography is a multidimensional art for many reasons. When we say “multi”, it primarily refers to a wider range that sports photography has to offer, which means sports photography is not only directed at presenting athletes on the move and the main actors who contribute to achieving the results by their engagement – it also has the role of sports “psychophotography” which is an analysis and capture of the emotional reaction of an athlete after winning or losing from the opposing team.

OBOLESCENCE AND THE DIFFUSION OF INNOVATIONS

2020 ◽  
pp. 113-130
Author(s):  
A.V. GOLUBEV ◽  
Keyword(s):  
Diffusion Of Innovations ◽  
Time Lag ◽  
Practical Implementation ◽  
Primary Role ◽  
Innovation Development ◽  
Scientific Hypothesis ◽  
Scientific Papers ◽  
The Moment ◽  
Sociological Studies

The diffusion of innovations is described as a process in a number of scientific papers. At the same time, the causes of this process have not been sufficiently studied. The author’s goal is to consider the main regularities, under which the life cycle of innovations begins, and propose measures to enhance diffusion in modern conditions. As a scientific hypothesis, the author accepts the postulate about the primary role of the obolescence of attracted innovations in this process. The analysis revealed not only the economic proportions that initiate the start of innovation promotion, but also the influence on the diffusion rate of the obsolescence degree of innovations and the market share occupied by the new product. Methodological approaches have been developed to determine economic efficiency depending on the moment of technological change-over, as well as to determine the absolute and relative speed of innovation diffusion. Sociological studies were conducted to determine the state of innovation development and the time lag between obtaining information about an innovation and its practical implementation. The author presents his “Agroopyt” information system developed to disseminate knowledge in the agricultural sphere and ensure technology transfer in agriculture. Digital methods provide for significant accelerateion of the diffusion of innovations and expand its scope.

Russian Museum of Emperor Alexander III as a place of memory

2020 ◽  
Vol 2020 (11-1) ◽  
pp. 132-147
Author(s):  
Dmitry Rakovsky
Keyword(s):  
Comparative Analysis ◽  
Historical Consciousness ◽  
Russian Society ◽  
Museum Collection ◽  
Works Of Art ◽  
History Of ◽  
The Creation ◽  
Historical Representations

The main purpose of this article is to study the role of the Russian Museum in the formation of the historical consciousness of Russian society. In this context, the author examines the history of the creation of the Russian Museum of Emperor Alexander III and its pre-revolutionary collections that became the basis of this famous museum collection (in particular, the composition of the museum’s expositions for 1898 and 1915). Within the framework of the methodology proposed by the author, the works of art presented in the museum’s halls were selected and distributed according to the historical eras that they reflect, and a comparative analysis of changes in the composition of the expositions was also carried out. This approach made it possible to identify the most frequently encountered historical heroes, to consider the representation of their images in the museum’s expositions, and also to provide a systemic reconstruction of historical representations broadcast in its halls.

The role of science in the study of and response to space threats

2019 ◽  
Vol 89 (8) ◽  
pp. 777-799
Author(s):  
B. M. Shustov
Keyword(s):  
Comparative Analysis ◽  
20Th Century ◽  
21St Century ◽  
Space Debris ◽  
The Sun ◽  
National Program ◽  
Biological Hazard ◽  
Academy Of Sciences ◽  
Space Activities

During the second half of the 20th century and the beginning of the 21st century, space hazards multiplied, the most urgent of which is space debris. Professionals working in space are exposed to this hazard daily and are aware of it as a problem. Furthermore, increasing attention is being paid to the unpredictable behavior of the Sun, which produces the so-called space weather. The asteroid-comet hazard is considered as potentially having the most catastrophic consequences. No manifestations of biological hazard have yet been observed, although as space activities develop, it is becoming increasingly important. The appropriate time scale for astrophysical hazards is many millions of years, so from a practical perspective, they have no importance. This article briefly describes the main types of space hazards. The author analyzes the results of research and practical work in the field, both worldwide and specifically in Russia. Comparative analysis leads to the clear conclusion that a national program must be developed for the study of space hazards and to respond to space threats. This article is based on a report made by the author at the meeting of the Presidium of the Russian Academy of Sciences (RAS) on January 15, 2019.

Analysis of incidence of cadets studying in one climate region according to priority classes of diseases

2020 ◽  
pp. 73-79
Author(s):  
R. Rakhmanov ◽  
E. Bogomolova ◽  
A. Tarasov ◽  
S. Zaytseva
Keyword(s):  
Risk Factors ◽  
Comparative Analysis ◽  
Respiratory Diseases ◽  
Subcutaneous Tissue ◽  
Annual Incidence ◽  
Climatic Region ◽  
Climate Region ◽  
Military Schools

Comparative analysis of the incidence was conducted for the leading classes – “Respiratory diseases” and “Diseases of the skin and subcutaneous tissue” – among cadets of two military schools studying in the same climatic region. General features in prevalence, indicators, structure, trends by years of study, and general features in the seasonality of increase in annual incidence are revealed. Role of the influence of synergistic risk factors for health is determined.

Sign in / Sign up

Export Citation Format

Share Document