Flora and Vegetation Characteristics of the Natural Habitat of the Endangered Plant Pterygopleurum neurophyllum

This study analyzed the flora, life form, and vegetation of the Nakdong River wetland. Vegetation analysis was performed on 37 plots using the phytosociological method of the Zürich-Montpellier School. PCA analysis was conducted by using the vegetation data (ground cover of class; 1~9) of 37 plots surveyed by phytosociological method. PCA (Principal Component Analysis) was used to statistically analyze the objectivity of the community classification and the character species. The traditional classification and mathematical statistic methods were used. A total of 82 taxa belonging to 28 families, 65 genera, 72 species, 2 subspecies, and 8 varieties were present in the vegetation of the survey area. The life form was analyzed to be the Th-R5-D4-e type. The communities were classified into seven communities: Miscanthus sacchariflorus community, Phragmites communis community, Phragmites communis–Carex dispalata community, Ulmus parvifolia community, Zizania latifolia community, Setaria viridis community, and Salix koriyanagi–Salix chaenomeloides community. As a result of PCA analysis, it was classified into seven communities. Seven communities were analyzed, where the most dominant species (M. sacchariflorus, P. communis, C. dispalata, U. parvifolia, Z. latifolia, S. viridis, S. koriyanagi, S. chaenomeloides) of each community were examined as character species. Another species is analyzed as Salix koreensis. Of the sixteen M. sacchariflorus communities, Pterygopleurum neurophyllum was present in six plots (A-2 group) but not in ten plots (A-1 group). These two groups showed differences in coverage and the number of occurring species. As for the relative net contribution degree (r-NCD) in the A-2 group, most species showed low r-NCD except for M. sacchariflorus, which showed an r-NCD of 100. The r-NCDs in the A-1 group were as follows: Miscanthus sacchariflorus (100), P. neurophyllum (21.74), and Persicaria perfoliata (10.14). Therefore, P. neurophyllum is difficult to grow in the A-1 group. As a result, it is thought that the high density of M. sacchariflorus affects the growth and distribution of P. neurophyllum. In order to expand and maintain P. neurophyllum, the habitat environment needs to be altered by adjusting the density of M. sacchariflorus.

EXPERIMENTAL TESTING OF THE METHODOLOGY OF BUILDING PRE-SERVICE FOOD TECHNOLOGIST’S SPEECH PRODUCTION COMPETENCE

The article presents the results of experiment organized to test the effectiveness of the methodology for building pre-service food technologist’s speech production competence in the process of self-directed work. The present research is based on the using of the following methods: studying and analyzing scientific publication on methodological experiment, observing the process of training, conducting methodological experiment, interpreting the results of experiment with the help of the methods of mathematical statistic. The hypothesis, the object, the subject, the task of the experiment, experimental materials, the varied and non-varied values, the experimental phases (organization, realization and dates constatation), the experiment nature (base, natural, opened, vertical-horizontal) are outlined. According to the hypothesis of the experiment the building pre-service food technologist’s speech production competence will be more effective provided by the using of special selected authentical professional oriented video texts, realization of the studying on the base of the professional oriented exercises subsystem, selection of the more optimal variant of studying organization on the stage of preparation. The data of pre-experimental and post- experimental sections are analyzed using the coefficient of the training proposed by V. P. Bespalko. The results of the experimental training using the criterion the Fisher transformation are interpreted. The data of the pre-experimental test declared that students in both experimental groups had the identical low level of speech production competence. The data of the pre-experimental test declared the growth of speech production competence. According to the experiment data one of the methodology variants has been proven to have a higher effect. The experimental testing proves the effectiveness of the methodology for building pre-service food technologist’s speech production competence of future pre-service food technologists as well as the effectiveness of the developed subsystem of exercises.

Portfolio Optimization in Post Financial Crisis of 2008-2009 in the Mongolian Stock Exchange

In this study, we present the Mongolian stock market’s performance post phenomenal financial crisis of 2008-2009, opportunities to invest and the risks problems. For analysis of the study, we used financial portfolio optimization models with restricted structure, mathematical statistic methods and financial methods. First, we considered about portfolio optimization in the Mongolian Stock Exchange using Markowitz’s modern portfolio theory and Telser’s safety first model. We used MSE weekly trading data chosen 50 most traded stocks out of 237 stocks listed at the MSE between 2009 and 2013. We generated 50 weeks mean-variance portfolio and safety first portfolio for 2014 and discussed. We considered weekly investment in the MSE using mean-variance portfolio andsafety first portfolio. The mean-variance portfolio has the best performance of weekly portfolio return with average weekly return and cumulative return. We found stable portfolio against investing risk and did back-test the result. For prospect investors in the MSE, we suggest invest and earn high return in the MSE.

Constitution of swine in ontogenesis and phylogenesis

Aim. Determination of the peculiarities of the formation of constitutional types in ontogenesis in animals of the modern large white breed of pigs in comparison with the wild european boar (Sus scrofa ferus) is a form of the breeding process, that has both theoretical and practical significance. Methods. The objects of the study are embryos, fetuses, newborns and adult animals of large white breed of pigs and wild boar in different periods of ontogenesis using zootechnical, morphological and mathematical-statistic methods of research. Results. Individual development of animals can be conventionally divided into two main periods: morphogenetic (or embryonic prenatal) and postmorphogenetic (or post-embryonic, postnatal). The morphogenetic period is the most crucial period in the ontogenesis of animals, the period of the highest activity of genes, which provides a fundamental placement and development of the basic functional systems of the body. Therefore, for the consideration of signs of embryonic development becomes one of the criteria of artificial selection of individuals for their natural hereditarily determined type of exteriors, constitutions, and metabolism. It particularly reflects the leading role of embryogenesis in the formation of the body structure and productive qualities of animals. Conclusions. For the species practice of selection, breeding and domestication consisted of changes in quantitative and qualitative relationships in growth and development, which, combined with subsequent targeted selection, contributed to the formation of modern breeds of pigs. The constitutional type analysis of the animals formation in ontogenesis has the most selective significance, which is primarily manifested in the exterior features. Domestication of the Sus scrofa consisted of consequently the exterior is expediently evaluated at different stages of ontogenesis, starting with the embryonic period and, especially, from birth. Keywords: phylogeny, domestics, ontogenesis, constitution, selection, species, breed.

Management of the River Vedi Annual Runoff

The article presents the following tasks for the Vedi river: to study and analyze the main physical and geographical factors determining the runoff; to collect, work out, analyze and estimate the results of factual hydro-meteorological observations of the river basin; to discover and analyze the features of intra-year distribution of the river runoff basin; to study dynamic changes of the river runoff; to create the methods of long-term forecasting of monthly and annual runoff; to create a map of spatial distribution of the river runoff. For these purposes were used the data of hydrological and meteorological stations, points of basin observations and mathematical-statistic, geographic, mapping, analytical and correlation methods.

GEOGRAPHICAL ANALYSIS OF EXTERNAL LABOR MIGRATIONS FROM UKRAINE

The purpose of the article lies in socio-geographical analysis of external labor migrations from Ukraine to European countries. Methodology is based on searching, processing and presentation of statistical information which describes the migration process. The main methods are descriptive, analytical, mathematical-statistic. Results. The current state of external labor migrations from Ukraine, their dynamics, scale, regional structure, main causes and transformations to develop an effective migration politics has been clarified. Scientific novelty lies in identifying stimulating factors of external labor migration of ukrainian people, the scale, structure and directions of external labor migration of the ukrainian population in the modern period. The practical value lies in the fact that the causes, scale, structure and geography of external labor migration are disclosed, that is the basis for conducting socio-economic procedures to prevent external migration processes at the regional level.

Enterprise’s Risk Assessment Of Complex Construction Projects

The purpose of this article is to present the preparation of Project Risk Assessment Methodology and its mitigation in complex construction projects. The main text provides a summary of the approach, the method used and the findings. The conclusions have been drawn that the proper tools for quantifying risks have to be based on the criteria specific for mathematical statistic and probability or at least fuzziness. Function, which makes possible to categorize any risks into one of the five categories, is a combination of probability and the impact on one of the items: people and their safety or budget, cost, schedule and planning or quality and performance. An attempt was made to express numerically the relationship between risks impacts and their level of likelihood. Also, a method of associating the influence of projects risks impacts on the extent of the likelihood of project risk occurrence which makes possible to determine the direction and the strength of this relationship was presented.