Diversité phytosociologique et séries dynamiques de la végétation de l’Atlas tellien occidental de Tiaret (N-O Algérie) / Phytosociological diversity and dynamic series of the vegetation in the Western Tell Atlas of Tiaret (NW Algeria)

2020 ◽  
Vol 46 (1) ◽  
pp. 97-116
Author(s):  
Mohamed Djamel ◽  
Seghir Hadjadj Aoul ◽  
Guillaume Decocq
Keyword(s):  
Dynamic Series

Detection and representation of the basic peculiarities of vegetation cover by the mapping method (experience based on a research of goltsy-taiga territories)

2013 ◽  
pp. 32-47
Author(s):  
S. V. Osipov
Keyword(s):  
Vegetation Cover ◽  
Mapping Method ◽  
Vegetation Changes ◽  
Large Classes ◽  
High Rise ◽  
The Third ◽  
Altitudinal Belts ◽  
The One ◽  
Dynamic Series ◽  
River Valleys

Geobotanical mapping of the territory in riverheads Bureya of 4500 sq.km is carried out and the map of a actual vegetation cover of scale 1 : 200 000 is prepared. The legend of the map is presented in the form of the text with three-level hierarchy of classes. At the heart of structure of a legend of the map such regularities of a vegetation cover, as its latitudinal zonality / altitudinal belts, situation in a relief and dynamic series lie. The largest divisions of the legend reflect, first, change of large classes of mesocombinations of vegetation at the level of belts and, secondly, distinction in a boreal - forestry belt between a vegetation cover of tops and slopes of mountains, on the one hand, and the bottoms of river valleys, with another. Divisions of the legend of the second level reflect, first, vegetation changes in the form of high-rise and barrier changes of subbelts, secondly, distinctions of a vegetation cover in different geomorphological conditions (small and average river valleys, northern slopes, etc.). Divisions of the legend of the second level correspond to dynamic series of units of the third level. Essential addition to it are block diagrams of dynamics of a vegetation cover.

ANALYSIS OF THE STRUCTURE AND PREDICTION OF HIV INFECTION INCIDENCE IN THE VORONEZH REGION

2020 ◽  
pp. 147-152
Author(s):  
Евгений Николаевич Коровин ◽  
Юлия Викторовна Сиромашенко ◽  
Владимир Николаевич Коровин
Keyword(s):  
Hiv Infection ◽  
Graphical Representation ◽  
Linear Trend ◽  
Risk Groups ◽  
Extrapolation Methods ◽  
The Past ◽  
Voronezh Region ◽  
The Future ◽  
Dynamic Series ◽  
Exponential Smoothing Method

В статье приведены анализ и прогнозирование основных статистических показателей, характеризующих развитие эпидемической ситуации по вирусу иммунодефицита человека (ВИЧ) в Воронежской области, а именно распределение по путям инфицирования. В качестве данных для прогнозирования были использованы показатели заболеваемости прошлых лет. Применяемый метод прогнозирования основан на методах экстраполяции. Все методы экстраполяции объединяет то, что они проецируют на будущее ход событий, сложившийся в прошлом. При этом не устанавливаются никакие причинные связи - принимается, что действующие в прошлом силы без существенных изменений будут действовать и в будущем. При формировании прогнозов с помощью экстраполяции исходят из статистически складывающихся тенденций изменения тех или иных количественных характеристик объекта за определённый период. Прогнозирование заболеваемости ВИЧ осуществляется с помощью метода экспоненциального сглаживания с использованием линейного тренда и выбором оптимальных параметров сглаживания. Трендом называют аналитическое или графическое представление изменения переменной во времени, полученное в результате выделения регулярной (систематической) составляющей динамического ряда. Основной целью анализа и прогнозирования является выявление основных тенденций по распространению ВИЧ-инфекции, определение основных путей инфицирование, а также выделение ключевых групп риска среди населения Воронежской области The article analyzes and predicts the main statistical indicators that characterize the development of the epidemic situation of human immunodeficiency virus (HIV) in the Voronezh region, namely, the distribution by infection pathways. Previous years ' morbidity rates were used as data for forecasting. The applied forecasting method is based on extrapolation methods. What all extrapolation methods have in common is that they project the course of events in the past into the future. At the same time, no causal relationships are established - it is assumed that the forces operating in the past will continue to operate in the future without significant changes. When forming forecasts using extrapolation, they are based on statistically developing trends in changes in certain quantitative characteristics of an object over a certain period. Predicting the incidence of HIV is carried out using the exponential smoothing method using a linear trend and choosing the optimal smoothing parameters. A trend is an analytical or graphical representation of changes in a variable over time, resulting from the allocation of a regular (systematic) component of a dynamic series. The main goal of the analysis and forecasting is to identify the main trends in the spread of HIV infection, identify the main routes of infection, and identify key risk groups among the population of the Voronezh region

A Dynamic Series Voltage Compensator for the Mitigation of LCC-HVDC Commutation Failure

2021 ◽  
pp. 1-1
Author(s):  
Lingxi Hou ◽  
Shuqing Zhang ◽  
Yingdong Wei ◽  
Biao Zhao ◽  
Qirong Jiang
Keyword(s):  
Voltage Compensator ◽  
Commutation Failure ◽  
Dynamic Series

scholarly journals CYCLIC DYNAMICS OF INFLATION: EMPIRICAL ANALYSIS

2017 ◽  
Vol 5 ◽  
pp. 396-400
Author(s):  
Alexander Protasov ◽  
Tatyana Kotcofana ◽  
Polina Stazhkova
Keyword(s):  
Nonlinear Dynamics ◽  
Twentieth Century ◽  
Spectral Analysis ◽  
Empirical Analysis ◽  
Price Levels ◽  
The World ◽  
Cyclic Dynamics ◽  
Dynamic Series

The paper is dedicated to the study of nonlinear dynamics of inflation. We hypothesize that in the second half of the twentieth century, inflation cycles replaced the pre-existing inflation-deflation cycles. This hypothesis is based on the study of data about price levels in various countries of the world for the period of 1950 to 2016. The paper shows some results of a spectral analysis that was applied to the dynamic series of prices. The results of the spectral analysis confirmed the hypothesis about the existence of inflation cycles.

Quantitative Analysis of the Camera Market Based on the Integrated Application Of game-Theoretic and Econometric Approaches

2021 ◽  
pp. 15-22
Author(s):  
Dmitriy Vlasov ◽  
P. Karasev ◽  
Aleksandr Sinchukov
Keyword(s):  
Risk Factor ◽  
Quantitative Analysis ◽  
Marketing Strategies ◽  
Game Model ◽  
Managerial Decisions ◽  
Game Theoretic ◽  
Dynamic Series ◽  
Basic Game ◽  
Made In

This article contains a quantitative analysis of the camera market and discloses the possibilities of comprehensive application of quantitative analysis and theoretical game modeling in the practice of making decisions in the field of the photo industry. It is noted that almost any phenomenon in the financial and economic sphere requires a thorough and comprehensive assessment, and the method of analyzing data in the form of dynamic series and theoretical and game models is most in demand in the conditions of actualization of risks of various nature. It is shown that the analysis of the dynamic series allows you to evaluate and predict the development of the economic situation, to form recommendations for making managerial decisions. Particular attention is paid to the construction and analysis of the basic game model of the manufacturer's choice of camera equipment for the time of launch of products to the market, taking into account projected demand. The inclusion of the risk factor in the process of quantitative analysis of the camera market helps to improve the quality of decisions made, in particular when choosing marketing strategies.

scholarly journals Analysis of some dynamic series of forest production and trends of forest economics in the Czech Republic

2008 ◽  
Vol 53 (No. 3) ◽  
pp. 119-128 ◽  
Author(s):  
V. Kupčák
Keyword(s):  
Czech Republic ◽  
Forest Management ◽  
The Other ◽  
Forest Economics ◽  
Wood Production ◽  
The Czech Republic ◽  
Timber Sales ◽  
Management Regimes ◽  
The One ◽  
Dynamic Series

Functions of wood production in forestry are historically determined by felling possibilities of forest resources. Revenues from timber sales create a financial space for silvicultural operations thus providing for management continuity. These determinations have however recently shown a rather negative trend of development due to the development of timber prices on the one hand and due to increasing inputs on the other hand, last but not least also due to the projections of near-natural forest management methods and increasing area under special management regimes. In their synergy, all these factors lead to economic impacts reflected not only in the profit of forest owners but also in economic results of other entities. The paper presents an analysis into the trends of forest management primary economic variables in the Czech Republic in the period from 1998−2004.

Long-Term Care Diversity within the Care Continuum

1995 ◽  
Vol 14 (2) ◽  
pp. 245-262 ◽  
Author(s):  
Betty Havens
Keyword(s):  
Health Care ◽  
Long Term Care ◽  
Term Care ◽  
Care Continuum ◽  
Current State ◽  
Future System ◽  
Canadian Health ◽  
Canadian Health Care ◽  
Dynamic Series

ABSTRACTLong-term care spans a broad range of very diverse services and a pivotal location within the overall continuum of health and health care. Changes in one component of care affect and are affected by all other components as health care may be characterized as a dynamic series of interdependent processes and persons. The current state of Canadian health care, in general, and long-term care, in particular, demands the skilful juggling of universality and diversity to maximize both these characteristics without sacrificing either. In an atmosphere of reform and fiscal restructuring, the organizational, utilization and financing implications for this system on a tightrope are substantial. The challenges are of major proportions in maintaining a balance while securing a future system that is efficient, efficacious, equitable, effective and empowering.

Analysis on Proportion and Development of Steel Workers’ Hospitalization Costs

2011 ◽  
Vol 84-85 ◽  
pp. 715-719
Author(s):  
Su Feng Yin ◽  
Sha Li ◽  
Ying Zhao ◽  
Xiao Jing Wang ◽  
Jian Hui Wu
Keyword(s):  
Blood Transfusion ◽  
Laboratory Tests ◽  
Medical Costs ◽  
Steel Worker ◽  
Development Trends ◽  
Steel Workers ◽  
Hospitalization Costs ◽  
Dynamic Series ◽  
Observation Period

In order to understand the distribution of hospitalization costs and development trends in Steel worker hospital, we used the proportion, the dynamic series and other indicators to analyze the Proportion and the developments of all medical costs spent by inpatients in a hospital during 2002 to 2009. As a result, expenditure on medicine obtained the largest proportion of the hospitalization costs. In the observation period, the proportion of medicine and laboratory tests kept growing, particularly of the medicine costs. While the blood transfusion costs decreased. The results indicated that we should focus on medicine costs firstly and then on laboratory tests fees to control the growth of hospitalization costs of steel workers.

scholarly journals Peculiarities of Predicting Business Cycles in the Ukrainian Economy

2020 ◽  
Vol 87 (4) ◽  
pp. 28-35
Author(s):  
M. V. Puhachova
Keyword(s):  
Economic Activity ◽  
German Economy ◽  
The State ◽  
Composite Indicators ◽  
Business Climate ◽  
Economic Activities ◽  
Macroeconomic Indicators ◽  
The Business Cycle ◽  
Climate Indicator ◽  
Dynamic Series

It is argued in the article that any common person is able to get an idea about the economy’s conditions and its forthcoming change, if he/she learns information Business Tendency Surveys (BTS), i. e. with combination indicators computed on the basis of indicators from these surveys. A review of the methods for constructing several types of integral composite indicators, based on indicators of BTS of enterprises by selected economic activities, is provided. Indicators of business climate, computed by the methodology of ifo-Institute and European Commission, and indicators of confidence by economic activity are analyzed. Being ahead of the curve, these indicators give good signals on change in the phases of business activity cycles in European economies and allow one to have rather precise short-term predictions of change in GDP and output by economic activity.  The analysis covers dynamic series of these indicators for the Ukrainian economy, with making the conclusion that now only the indicators of confidences for four economic activities can be used for predicting the business cycle for 2 to 3 quarters. The Business Climate Indicator, computed by the European methodology, has good correlation with GDP, but it is only one quarter ahead of it. The Business Climate Indicator, computed by the methodology of ifo-Institute, did show rather good correlation with GDP, but could not demonstrate its good qualities as for the German economy. Unfortunately, this indicator could be computed only for the period before 2013, because subsequently its components were withdrawn from survey questionnaires.  One of the main recommendations given in the article is as follows: an organization performing BTS of enterprises (namely, the State Statistics Service of Ukraine) needs to more actively propagate the information about various composite indicators that can obviously be demanded by a broad range of statistical information users. These indicators should be, inter alia, displayed on the home page of the official web-site of the State Statistics Service of Ukraine together with hot news (probably, in a graph form together with macroeconomic indicators).

scholarly journals Sociocultural activities of the Russian business community of the XIX – beginning XX century in the context of quantitative history

2020 ◽  
Author(s):  
T. Kandaurova ◽  
Keyword(s):  
Quantitative Methods ◽  
Business Community ◽  
Annual Reports ◽  
Educational Institutions ◽  
Cultural Activities ◽  
Dynamic Series

The article presents the experience of analyzing the socio-cultural activities of the Russian business community using quantitative methods (building trend models based on the materials of dynamic series of annual reports) for the development of the Arnoldo-Tretyakov school, shows the contribution of entrepreneurs to the formation of funds for the development and construction of educational institutions, scholarship funds based on charitable practices.

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