In connection with elaboration of scientific project �Statistical study of forestry companies competitiveness� and on the basis of the accumulated national and foreign experience a system of indicators and sub-indicators for complex quantitative assessment of forestry companies competitiveness has been offered. The proposed indicators are: competitiveness of product being offered; labor productivity; financial results; enterprise growth; market adaptability; economic realization of property of forest resources; silvicultural activities. In current paper are presented the scientific results from the verification of the offered indicators and sub-indicators reliability.1. The verification is carried out on the basis of questionnaire survey among specialists connected with forestry. The questionnaire includes two parts. Through the first one is checked the reliability of the system of indicators related with competitiveness of economic subjects that manage Bulgarian forest territories. By means of the second part is checked the reliability of the system of indicators connected with competitiveness of economic subjects engaged with timber harvesting and silvicultural activities in Bulgarian forest territories. On the grounds of the collected and processed data the initial system of indicators and sub-indicators is supplemented and improved.
The aim of the present article is to research the availability of rules in the change of the prices of the most spread flats in the neighbourhoods of Sofia. The results from a research in the change of the offered prices of the residential real estates by months for an annual period of time (from October 2016 to September 2017) have been presented. The presence of an uprising tendency for the bigger share of the neighbourhoods has been proven. For those of them where there is a tendency missing are calculated indices for seasonality by the method of the mean chronological value. Upcoming seasonal deviations of the mean monthly prices from the average annual by the separate types of flats (studios, one-bedroom and two-bedroom flats), whereas the highest values are registered in the summer and the early autumn - the months August and September, and the lowest in the late autumn - the months October and November. The most significant are the fluctuations in the variation of the prices in the studios, followed by the two-bedroom flats and one-bedroom flats. The results could be useful to some potential investors.
The present study is devoted to the influence of housing affordability on the fertility rate in Bulgaria. Both data published by NSI and data obtained by individual request were used. Housing affordability is a factor and is represented as the ratio of the average price of a 70 m2 apartment and the average gross salary of an employed person, as well as the ratio of the average housing price and the average income per person in a household. Fertility has the role of an outcome variable and is represented by the gross fertility rate, average age of the mother at the birth of the first child and at the birth of a child, number of live births by age of the mother and total fertility rate. Such lag values of the factor variable were used due to the long period from the moment of availability of housing to its acquisition, completion, furnishing and commissioning, and the long biological period from the decision to implement reproductive intentions to the birth of a child. The Pearson correlation coefficient was used to assess the direction and strength of the relationship. A strong negative relationship is found between housing affordability and fertility rate, except for the relationship with the total fertility rate, which is weakly positive. The change in the lag has a minimal effect on the value of the correlation coefficients. Therefore, a conclusion can be made that children are mostly born where housing affordability is low and parents are forced to raise them in unsuitable housing conditions.
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