DETERMINATION OF THE OPTIMAL BOUNDARIES AND CONFIGURATION OF THE IRKUTSK URBAN AGGLOMERATION

2021 ◽  
Vol 42 (2) ◽  
pp. 151-160
Author(s):  
V.L. BABURIN ◽  
A.V. RYBKIN
Keyword(s):  
Urban Agglomeration

scholarly journals Forest plant communities and their degeneration in the urban forests of Warsaw

2018 ◽  
Vol 60 (4) ◽  
pp. 269-280
Author(s):  
Wojciech Ciurzycki ◽  
Katarzyna Marciszewska
Keyword(s):  
Plant Communities ◽  
Urban Forests ◽  
Urban Agglomeration ◽  
Surface Protection ◽  
Current State ◽  
Fundamental Significance ◽  
Forestry Management ◽  
Historical Origins

Abstract This paper presents the results of an inventory of plant communities of the urban forests in Warsaw. It covers the occurrence of forest associations and forest plant communities in individual forest complexes. Due to their location within the boundaries of a large urban agglomeration, Warsaw’s city forests are particularly exposed to anthropopressure. The share of various degrees of degeneration and dominant forms of degeneration in individual complexes and over the whole surface under investigation was assessed. Possible causes of the conditions existing in the forests have been discussed; in particular, within the context of the development and use of these forests for tourism and recreation. Particular forests’ distinct historical origins, forestry management, and existing forms of surface protection possess fundamental significance for the determination of their current state.

Methodology of Assessing the Comlectarity of Consumer Services in the Territory of Urban Aglomeration

2021 ◽  
Vol 13 (4-2) ◽  
pp. 316-323
Author(s):  
Elena Razomasova ◽  
Keyword(s):  
Supply And Demand ◽  
Urban Agglomeration ◽  
Actual State ◽  
Pricing Policy ◽  
Strategic Development ◽  
Services Sector ◽  
Consumer Services ◽  
Methodological Approaches ◽  
Quantitative Indicators

The article presents methodological approaches to the formation of a criteria of assessing the level of consumer services sphere development on the territory of an urban agglomeration, taking into account the determination of the indicative supply rate of companies providing services. The semantic basis of the category "complectarity" is formulated and the significance of this category in the approach of assessing the actual state of the development level of the consumer services sphere is shown, taking into account the actual set of services provided by enterprises in relation to the set of services, which serve as a measure of their number. The application of this methodology allows us to reveal the unevenness of the supply of consumer services relative to real demand of this services and to explain the formation of pricing policy of companies, providing services in conditions of deviation from the equilibrium of supply and demand, which fully meets the principles of the theory of pricing formation by formulating a coherent strategy of the consumer services sphere development. Research carried out on the basis of using methodology of complectarity makes it possible to more accurately determine the species and quantitative disparities in supply in any territory of an urban agglomeration, taking into account the size of the population living in it. Evaluation of the supply of consumer services relative to their real demand based on the application of the bundling methodology allows us to determine the specific and quantitative disproportions of the supply of consumer services in any territory of an urban agglomeration relative to the number of people living there, which corresponds to the theory of pricing, explains the possibility of forming an equilibrium price, subject to the presence or absence of a package offer of consumer services, including specific and quantitative indicators. Thus, a program or strategy for the development of consumer services should be aimed at bringing the indicator of integral completeness to one. It is with this meaning that economic equilibrium and the absolute achievement of the goals of strategic development of the consumer services sector take place. This condition corresponds to the concepts of "set", "ideal completeness" and serves as a criterion for assessing the level of development of consumer services in the territory under consideration.

Traffic Demand Model to Study Urban Agglomeration Transportation System

2014 ◽  
Vol 587-589 ◽  
pp. 1805-1808
Author(s):  
Cheng Bing Li ◽  
Rui Xue Guo ◽  
Min Li ◽  
Jian Chao Wang
Keyword(s):  
Travel Demand ◽  
Demand Management ◽  
Transportation System ◽  
Urban Traffic ◽  
Urban Agglomeration ◽  
Demand Model ◽  
Traffic Demand ◽  
Core Content

The determination of traffic demand for urban transportation system is one of the core content of urban traffic planning, it is the basis for the traffic demand management strategy. First of all, the paper expounds the concept of urban agglomeration and features, on this basis, the traffic supply and traffic demand of urban agglomeration transportation system is analyzed. Second, according to land area for urban residents travel demand, according to the classification of goods transport industry production requirements were determined, thus to construct a system of urban agglomeration transportation traffic demand model.

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Distance to SN 1987A and the LMC

1999 ◽  
Vol 190 ◽  
pp. 549-554
Author(s):  
Nino Panagia
Keyword(s):  
Angular Size ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Light Curves ◽  
Distance Modulus ◽  
Absolute Size ◽  
Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

International determination of the total motion of the pole

1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  
Secular Motion ◽  
The Future

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

Large-scale Motion of Solar Filaments

2000 ◽  
Vol 179 ◽  
pp. 205-208
Author(s):  
Pavel Ambrož ◽  
Alfred Schroll
Keyword(s):  
Magnetic Flux ◽  
Proper Motion ◽  
Time Scale ◽  
Large Scale ◽  
Accuracy Of Measurements ◽  
Solar Filaments ◽  
General Movement ◽  
Scale Motion ◽  
Velocity Scatter

AbstractPrecise measurements of heliographic position of solar filaments were used for determination of the proper motion of solar filaments on the time-scale of days. The filaments have a tendency to make a shaking or waving of the external structure and to make a general movement of whole filament body, coinciding with the transport of the magnetic flux in the photosphere. The velocity scatter of individual measured points is about one order higher than the accuracy of measurements.

Practical Realization of a Reference System for Earth Dynamics by Satellite Methods

1975 ◽  
Vol 26 ◽  
pp. 341-380 ◽  
Author(s):  
R. J. Anderle ◽  
M. C. Tanenbaum
Keyword(s):  
Reference Frame ◽  
Polar Motion ◽  
Pole Position ◽  
Control Points ◽  
Significant Information ◽  
Crustal Motion ◽  
Average Reference ◽  
Future Data ◽  
Existing Data

AbstractObservations of artificial earth satellites provide a means of establishing an.origin, orientation, scale and control points for a coordinate system. Neither existing data nor future data are likely to provide significant information on the .001 angle between the axis of angular momentum and axis of rotation. Existing data have provided data to about .01 accuracy on the pole position and to possibly a meter on the origin of the system and for control points. The longitude origin is essentially arbitrary. While these accuracies permit acquisition of useful data on tides and polar motion through dynamio analyses, they are inadequate for determination of crustal motion or significant improvement in polar motion. The limitations arise from gravity, drag and radiation forces on the satellites as well as from instrument errors. Improvements in laser equipment and the launch of the dense LAGEOS satellite in an orbit high enough to suppress significant gravity and drag errors will permit determination of crustal motion and more accurate, higher frequency, polar motion. However, the reference frame for the results is likely to be an average reference frame defined by the observing stations, resulting in significant corrections to be determined for effects of changes in station configuration and data losses.

Models of Thermodynamic Properties of Prominences

1979 ◽  
Vol 44 ◽  
pp. 349-355
Author(s):  
R.W. Milkey
Keyword(s):  
Thermodynamic Properties ◽  
Mass Transport ◽  
Emission Spectrum ◽  
Thermodynamic Parameters ◽  
Working Group ◽  
Physical Processes ◽  
Theoretical Concepts ◽  
Group 3 ◽  
Observational Techniques

The focus of discussion in Working Group 3 was on the Thermodynamic Properties as determined spectroscopically, including the observational techniques and the theoretical modeling of physical processes responsible for the emission spectrum. Recent advances in observational techniques and theoretical concepts make this discussion particularly timely. It is wise to remember that the determination of thermodynamic parameters is not an end in itself and that these are interesting chiefly for what they can tell us about the energetics and mass transport in prominences.

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