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Determination of three small streams’ chemical water quality in Budapest
Published August 6, 2020
69-75

The location and development of cities has been influenced basically by various environmental factors. However, the relationship is bilateral, because not only the environment can affect the city, but the city can affect the environment in different ways, depending on recovery. This is especially true in the case of large cities such as Budapes...t where the different geological, geomorphological, hydrological, soil and bio-geographical conditions can be changed in very small areas, which implies that land use can be also modified as well. The aim of our study was to determine the chemical water quality of three small streams in Budapest which have same water flow and compare the field and the laboratory test results. Between many natural characteristics of these streams similarity is evident, however, several differences were found between the watersheds in terms of human land use. Statistical data analysis was performed as well, which was the aim to explore the relationship between the parameters. Overall, according to our study it can be concluded, the small streams have similar water chemical properties, but some parameters need special attention in the future, because the investigated small streams can be categorized into polluted and sometimes heavily polluted category.

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Application of mathematical and statistical paradoxes in tourism
Published August 6, 2020
230-239

The paradox is a well-founded statement / method, derived from a specific area of science and the application possibilities worth to try a different area of the farm in their respective fields. The world of chances and its mathematics is abound of paradoxes. Mathematics and statistics are separate disciplines and related sciences of many areas ...at the same time. Application of advanced education and research is essential. The study presents analyzing evaluation options in
the field of tourism based on two paradoxes (regression and maximum-likelihood) factor analysis and multidimensional scaling analysis.

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SEGMENTATION USING A DECISION TREE
Published August 21, 2020
49-54

In the field of economics, the knowledge of high-level mathematical and statistical methods is necessary for a demanding analysis. Today the various items, indexes, and distributions are user-friendly analytical tools that have been built into computer programmes. In the case of uncertain decisions, decision trees are being applied in more and ...more areas. Using this method, decision rules can be created, so they can be used for segmentation as well. The study presents a
classification suitable for such a grouping.

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AN EXAMINATION OF INVENTORY MANAGEMENT OF A STORE IN DISADVANTAGED SUBREGION
Published August 21, 2020

How a retailer can manage in Tiszasas, in one of the villages of the most disadvantageous districts in Jász-Nagykun-Szolnok County, among extremely unfavorable micro environmental factors where customers have especially low discretionary incomes. Our objective was to estimate how the improving stock management contributes to the growing turnov...er.

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SHORT TERM EFFECT OF HEALTH RELATED BEHAVIOUR INTENTION’S FORMED DURING WELLNESS TRAVELLING ON HEALTH BEHAV-IOUR
Published August 21, 2020
36-43

The short and long-term effect of tourism on behavior can be verified by empirical studies mainly in ecotourism. The results of present research focus on the short-term impact of be-havioral attitudes on health tourism and post-journey health behavior. The study is basically based on the guidelines of international literature, showing a discrep...ancy in the applied sta-tistical calculations. The analysis was performed in the non-parametric Kruskal-Wallis test, for further confirmation from the descriptive statistical calculations using median and mode tests. According to the responses, the health tourism trips appeared in a field of support for the maintenance and development of health.

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