The comparison of two systems of vegetation classification of steppe communities in the Minusinskaja kotlovina basin (South Siberia)

1981 ◽  
Vol 16 (2) ◽  
pp. 125-132 ◽  
Author(s):  
Pavel Kovář ◽  
Vera Georgijevna Volkova
Keyword(s):  
Vegetation Classification ◽  
South Siberia ◽  
Two Systems ◽  
Steppe Communities

Second international scientific conference «Present fundamental problems of vegetation classification» (Yalta, 15–20 September 2019)

2019 ◽  
pp. 135-142
Author(s):  
K. V. Ivanova ◽  
A. M. Lapina ◽  
V. V. Neshataev
Keyword(s):  
Plant Communities ◽  
National Archive ◽  
Botanical Garden ◽  
Vegetation Classification ◽  
Scientific Conference ◽  
Scientific Journals ◽  
Time Dynamics ◽  
The Past ◽  
Research Organizations

The 2nd international scientific conference «Fundamental problems of vegetation classification» took place at the Nikitskiy Botanical Garden (Yalta, Republic of Crimea, Russia) on 15–20 September 2019. There were 56 participants from 33 cities and 43 research organizations in Russia. The conference was mostly focused on reviewing the success in classification of the vegetation done by Russian scientists in the past three years. The reports covered various topics such as classification, description of new syntaxonomical units, geobotanical mapping for different territories and types of vegetation, studies of space-time dynamics of plant communities. The final discussion on the last day covered problems yet to be solved: establishment of the Russian Prodromus and the National archive of vegetation, complications of higher education in the profile of geobotany, and the issue of the data leakage to foreign scientific journals. In conclusion, it was announced that the 3rd conference in Nikitskiy Botanical Garden will be held in 2022.

Classification of woody-shrub vegetation of the forest-steppe complex of Privolzhskaya Upland

2009 ◽  
pp. 27-53
Author(s):  
A. Yu. Kudryavtsev
Keyword(s):  
Plant Community ◽  
Plant Communities ◽  
Dominant Species ◽  
Large Scale ◽  
Nature Reserve ◽  
Vegetation Mapping ◽  
Vegetation Classification ◽  
Forest Steppe ◽  
Mapping Data

Diversity of plant communities in the nature reserve “Privolzhskaya Forest-Steppe”, Ostrovtsovsky area, is analyzed on the basis of the large-scale vegetation mapping data from 2000. The plant community classi­fication based on the Russian ecologic-phytocoenotic approach is carried out. 12 plant formations and 21 associations are distinguished according to dominant species and a combination of ecologic-phytocoenotic groups of species. A list of vegetation classification units as well as the characteristics of theshrub and woody communities are given in this paper.

scholarly journals Validation of a new wearable device for type 3 sleep test without flowmeter

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0249470
Author(s):  
Mauro Contini ◽  
Antonio Sarmento ◽  
Paola Gugliandolo ◽  
Alessandra Leonardi ◽  
Gianluigi Longinotti-Buitoni ◽  
...  
Keyword(s):  
Simultaneous Recording ◽  
Screening Tests ◽  
Respiratory Flow ◽  
Ventilation Monitoring ◽  
Two Systems ◽  
Test Instrumentation ◽  
Central Apneas ◽  
Type 3

Background Ventilation monitoring during sleep is performed by sleep test instrumentation that is uncomfortable for the patients due to the presence of the flowmeter. The objective of this study was to evaluate if an innovative type 3 wearable system, the X10X and X10Y, is able to correctly detect events of apnea and hypopnea and to classify the severity of sleep apnea without the use of a flowmeter. Methods 40 patients with sleep disordered breathing were analyzed by continuous and simultaneous recording of X10X and X10Y and another certified type 3 system, SOMNOtouch, used for comparison. Evaluation was performed in terms of quality of respiratory signals (scores from 1, lowest, to 5, highest), duration and classification of apneas, as well as identification and duration of hypopneas. Results 580 periods were evaluated. Mean quality assigned score was 3.37±1.42 and 3.25±1.35 for X10X and X10Y and SOMNOtouch, respectively. The agreement between the two systems was evaluated with grades 4 and 5 in 383 out of 580 cases. A high correlation (r2 = 0.921; p<0.001) was found between the AHI indexes obtained from the two systems. X10X and X10Y devices were able to correctly classify 72.3% of the obstructive apneas, 81% of the central apneas, 61.3% of the hypopneas, and 64.6% of the mixed apneas when compared to SOMNOtouch device. Conclusion The X10X and X10Y devices are able to provide a correct grading of sleep respiratory disorders without the need of a nasal cannula for respiratory flow measurement and can be considered as a type 3 sleep test device for screening tests.

Carabid Beetle and vegetation associations in the Tasmanian Eastern Tiers: implications for conservation

1998 ◽  
Vol 4 (3) ◽  
pp. 240 ◽  
Author(s):  
Karyl Michaels ◽  
Louise Mendel
Keyword(s):  
Evaluation Criteria ◽  
Vegetation Classification ◽  
Carabid Beetle ◽  
Conservation Value ◽  
Pitfall Traps ◽  
High Conservation ◽  
Conservation Values ◽  
Conservation Assessments ◽  
Sclerophyll Forests

The distribution and abundance of the carabid beetle fauna of selected grassy ecosystems, wet and dry sclerophyll forests, and wet heaths in the Eastern Tiers, Tasmania was examined using pitfall traps. The conservation values of the sites were assessed by applying evaluation criteria typically used for vegetation (i.e., representativeness, typicalness, diversity and rarity) to both the carabid fauna data and the vegetation data. Sites of high conservation value for carabids and vegetation were identified and compared. Sites that ranked highest in terms of the carabid fauna on all conservation criteria were not the sites that ranked highest based on the vegetation. Classification of sites produced different results depending on whether plant or carabid data were used. Conservation based solely on vegetation attributes will therefore not necessarily conserve a rich and/or representative carabid fauna. If the objective to conserve a representative range of all biota is to be met, the use of additional taxa such as carabids in conservation assessments is desirable.

Primitive Genus Two Groups of Meta Type

2018 ◽  
Vol 7 (1-2) ◽  
pp. 1
Author(s):  
Haval Mohammed Salih
Keyword(s):  
Computer Algebra ◽  
Computer Algebra System ◽  
Complete Classification ◽  
Permutation Groups ◽  
Affine Groups ◽  
Two Systems ◽  
Genus Two

This paper is a contribution to the classification of the finite primitive permutation groups of genus two. We consider the case of affine groups. Our main result, Lemma 3.10 gives a complete classification of genus two systems when . We achieve this classification with the aid of the computer algebra system GAP.

SOME ASPECTS OF INDUSTRIAL CLASSIFICATION IN The SOVIET UNION

1967 ◽  
Vol 19 (5) ◽  
pp. 129-145
Author(s):  
T.J. GRAYSON
Keyword(s):  
Soviet Union ◽  
Classification Systems ◽  
The Soviet Union ◽  
Two Systems ◽  
Component Production ◽  
Research Institute

Basically there are two industrial classification systems in operation in the Soviet Union: the classification of industrial documents and their related commodities, and the classification of industrial workpieces. However, these two systems exist in diverse forms. In this paper it is proposed to examine some of the codes which either have direct state approval through ministerial or All‐Union research institute agencies, or have been specifically designed for standardizing component production.

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