Bravicheva O.S.
METHODS AND INSTRUMENTAL MEANS OF RESEARCH OF FACTORS INFLUENCE ON DURATION OF WORK SEARCH ^{[№ 2 ' 2006]}
Influence of sex, work experience presence, age, education, profession and specialty of unemployed on duration of work search is discovered with help of nonparametric methods of statistics, realized in the pocket Statistica 6.0. The influence of these factors on time of job placement is characterized in this work.

Erunov V.P., Bravicheva O.S.
MODELLING AND ESTIMATION OF EFFICIENCY OF EDUCATIONAL PROCESS FUNCTIONING IN HIGH SCHOOL ^{[№ 10 ' 2005]}
In the article the description is given of a technique of formation model of educational process development in high school. As an example, quantitative models are received and investigated of educational process on specialities of the Orenburg State University, the degree of influence of the allocated factors on criterion function is appreciated, efficiency of educational process is determined and the two-factorial forecast of quality of preparation of experts is received.

Renner A.G., Bravicheva O.S.
MODELING OF LABOUR-MARKET TAKING INTO CONSIDERATION THE DATA HETEROGENEITY ^{[№ 10 (app.1) ' 2005]}
The authors offer the approach to labour-market modeling. They take into account the data heterogeneity both of subjects of examination and periods of time. The approach is applied by the example of labour force market of Orenburg using statistic packet Stata 6.0. In the result of modeling the labour market’s most and less popular categories of unemployed depending on sex, age, education and profession were stated.

Fot N.P., Bravicheva O.S.
CLUSTER ANALUSIS USAGE BASING FOR STAPHYLOCOCCI'S SPECIFIC IDENTIFICATION ^{[№ 3 ' 2002]}
The article scrutinizes the compound biological objects identification (such as staphylococci). Multi-measured statistic methods of data treatment were used in the research. To solve this problem, cluster analysis was used.