CBU International Conference on Innovations in Science and Education
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EXPLORING OPPORTUNITIES FOR THE RETURN OF BULGARIAN MIGRANTS IN RESPONSE TO THE GROWING NEED FOR SPECIALIZED STAFF IN SOFIA
No full textThis article examines the issues related to Bulgarian migration after the country acceded to the EU in 2007 and focuses its research on the phenomenon of “brain drain” – the process of mass emigration during which specialists, scientists and skilled workers leave. Today, this phenomenon is quite typical for Bulgaria as part of the former socialist countries of Eastern Europe. The problems associated with the “brain drain” are very relevant as the country suffers significant economic and cultural losses while the host countries acquire large and inexpensive intellectual capital.
During the years of transition, Bulgaria strives to be a full member of the EU and provide opportunities for development and realization of specialists, scientists, and researchers. This requires the adoption of measures and initiatives to establish sustainable development in the capital and in the country and meet the need for highly skilled labor in the industrial sphere.
The article aims to explore the possibilities for the return of Bulgarian migrants in response to the growing need for specialized staff in Sofia. The quantitative study involved more than 500 Bulgarian migrants residing in different host countries, selected randomly and responded voluntarily.
The article defends the thesis that if Bulgaria provides opportunities to develop specialized staff through the undertaking of specific initiatives, this can be an attraction and a motive for the return of Bulgarian migrants.
The study methodology utilizes the quantitative studies model (and, more specifically, the questionnaire method). To obtain more reliable results, their interpretation also includes additional statistical tools. The question whether a correlation exists between the age and the degree of settlement of Bulgarians abroad is of special interest and has been investigated using the Cramér V.
The results show that in recent years the need for specialized staff is constantly growing. In response to this need, the initiatives that are undertaken are aimed at innovations in science and education. The study also takes into account the readiness of Bulgarian migrants to return home
LINGUISTIC ASPECTS OF CHARTED KNITTING PATTERNS
No full textThe paper outlines the linguistic and semiotic aspects of a specialty text – a knitting pattern. In today’s busy world, nobody wants to read long and complicated texts if it can be easier illustrated by a photograph or a charted image that uses a set of specific symbols with their own, non-arbitrary meanings to make a text reader’s time usage more effective but also clear. Aspects of signs, semiotics, and language games are also explored in alignment with knitting charts as the main reference, as a knitting chart symbol is a concrete referent in its context. Finally, the translation of knitting charts is described, including the importance of a chart key and what transformations of text have occurred in the translation of knitting charts from English into Latvian. Charted knitting patterns could become a that could be easily transferred between different languages and cultures, helping people share their skills and heritage. Knitting and linguistics and translation studies is a new area of research that could bring many new insights about crafting and specialized language use
OPTIMIZING THE BEHAVIOR OF THE EMERGING ADULT BY DECREASING OF MALADAPTIVE MENTAL SCHEMAS
No full textThe article presents the research results on the effects of a program for optimizing emerging adults’ behavior in Romania. Behavior optimization was achieved by improving maladaptive mental schemas through group cognitive-behavioral interventions. The research was conducted in two stages. The research's initial stage consisted of an investigation of a group of 212 young people (19-30 years old) belonging to the NEET category (Not in Education, Employment, or Training). The psychological tools assessed the personality, the level of manifestation of cognitive and emotional maladaptive schemas, Personal Autonomy, and Self Efficacy. The second stage of the research involved 48 NEET young people who participated in a personal development program to optimize behavior for a period of 18 months. Participants experienced improvements in dysfunctional mental schemas, reported increases in personal autonomy and flexibility, and adaptive changes in personality structure. This research is a first in Romania and joins the efforts to improve the psycho-social condition of young NEETs in Romania (currently at 16.8%)
SPECIFICS OF TEACHING THE INVERSE RELATIONS BETWEEN THE ARITHMETIC OPERATIONS ADDITION AND SUBTRACTION DURING THE EDUCATION IN MATHEMATICS IN GRADE 1
No full textOne of the fundamental knowledge in mathematics in Primary school is related to the arithmetic operations addition and subtraction. According to the educational programs in mathematics in the Republic of Bulgaria, students start studying these operations in grade 1.
The article presents theoretical concepts affecting studying the arithmetic operations addition and subtraction in the education in mathematics at a primary school.
The research work identified the specifics of studying the inverse connections between the arithmetic operations addition and subtraction in the education in mathematics for grade 1 are also presented. Some of the significant tasks with importance for discovering the relations between the forward operation addition and the reverse operation subtraction were proposed in the study. A new methodology system of work with tasks where these relations are used was developed and tested.
The author studied the knowledge, skills, and competencies of the grade 1 students to solve arithmetic operations addition and subtraction tasks. After the exit diagnostic, it was found out that the students of the class where the new methodology system of work was applied during their education in mathematics have got a higher level of knowledge and skills from competency Cluster Numbers in respect of the arithmetic operations addition and subtraction.
The use of mathematical tasks with reverse relations between the arithmetic operations addition and subtraction help the students to develop both the overall mathematical knowledge and the logical thinking of the first-graders
MATERNAL LEUKOCYTOSIS AS DIAGNOSTIC MARKERS IN SPONTANEOUSLY DECLARED PRETERM BIRTH
No full textSpontaneous preterm birth is the basic problem of perinatal mortality in Bulgaria. Pregnancy is characterized by physiological leukocytosis - determined by twice increased neutrophils levels, unchanged monocyte levels, and a reduction in the levels of lymphocytes, eosinophils, and basophils. The leukocytosis is particularly pronounced in the last trimester, due to physiological stress during pregnancy, and it is a result of the increased inflammatory response, a consequence of selective immune tolerance, immunosuppression, and fetus-immunomodulation.
The objective of this study was to investigate and to appreciate maternal leukocytosis as potential diagnostic markers in spontaneously declared preterm birth and term birth declared cases.
Methods: The case–control study was performed in UMBAL-City Hospital, Stara Zagora during 2017–2020. The study involved 200 patients, split into two groups: G1- the healthy pregnant women, n1=100 with а registered singleton pregnancy, at gestational age 37-39+6, gave birth on the term (TB); G2- the PTB patients, n2=100, confirmed clinically by cardiotocography for gestation >32 weeks. The highly sensitive Leuko-TIC-ELISA-WBC (upper limit of the normal number of Leuc during pregnancy - 15x109 per L) test was used for investigation. Blood samples were taken by puncture of the v.cubitalis in an anticoagulant at the time of hospitalization and examined within 1 hrs. Patients with systemic chronic illness and infections were excluded from the study.
The results showed statistically significant Leuc reduction in SPTB patients (14.31±2.66×109/L, p>0.03), compared to the increased (14.67±3.21×109/L) (in normal-15x109L) Leuc values in the TB group.In conclusion, the results of the Leuc value confirm the presence of a systemic leukocytosis/oxidative inflammatory reaction at the time of declaring SPTB and TB
C-REACTIVE PROTEIN LEVELS - INDICATOR FOR PROGNOSIS OF SPONTANEOUS PRETERM BIRTH IN BULGARIAN WOMEN
No full textIt is estimated that every year fifteen million premature babies are born worldwide mainly due to spontaneous preterm birth (sPTB). Furthermore, in clinical settings, there still are no reliable and accurate tools to predict preterm labor. Hence, the aim of this pioneering research was to estimate the relationship between the maternal inflammatory indicator and sPTB in a case-control study between 220 South Bulgarian women. The study was conducted at UMBAL, Stara Zagora, Bulgaria (2017-2020) and enrolled a total of 220 women, determined into two groups: 1) TB (n = 110), who were to give birth at term ≥ 37 to ≤ 39 + 6 gestation weeks with active labor at the time of hospitalization; and 2) sPTB (n = 110), women with preterm birth ≤ 32–34 + 6 gestation weeks and declared active labor, who were to give birth within 5-24 hrs. The inflammatory indicators/CRP concentration was quantified in plasma by immunoturbidimetric methods within 2 hrs. in mg/l. The median maternal CRP (8.77 ± 3.91), with cutoff = 4.9 mg/l was identified as optimal inflammation with highest risk of sPTB (sensitivity = 86.6%; specificity = 53.7%, р < 0.0001). Moreover, a cutoff CRP = 4.9 mg/l was found to be most effective in determining maternal age ≤ 19 years, the sensitivity of 68.6%, and positively correlated OR = 8.122 vs. OR = 2.354, with increased total sPTB risk at ≤ 32-34 + 6 weeks, respectively (p < 0.001).
In conclusion, increased CRP concentrations and a decreased maternal age were associated with increased risks of sPTB, before ≤ 32-34 + 6 weeks. Minimal inflammation and other factors in combination may also act as sPTB prognosis
LIFE QUALITY OF PATIENTS WITH RHEUMATOID ARTHRITIS ACCORDING TO THE LEVEL OF PAIN
No full textThis is a transversal (cross-sectional) descriptive study. The aim of the study is to evaluate the quality of life of patients with rheumatoid arthritis
Objectives: To identify the level of pain related to daily activities in patients with RA according to gender and age groups.
Conclusions: 77% of these patients have poor quality of life because of pain associated with RA. The FSI for pain resulted in 0.25, 0.39 for addiction and 0.26 for difficulty. 
Front Matter: Volume 2
No full textThis PDF file contains the front matter of the Proceedings of CBU in Proceedings of CBU in Medicine and Pharmacy Volume 2 including the Title Page, Copyright information, Table of Contents, Introduction, and Conference Committee listing. 
THE EFFECT OF 3D TECHNOLOGIES IN STEREOMETRY TRAINING
No full textThe software proposed in the report can be used as a technological tool in the teaching and learning of the discipline of stereometry. The aim is to improve the learning process by supporting the development of students’ creativity and spatial imagination, qualities needed in the study of spatial geometric bodies. A new boundary method is used in the generation of geometric objects. This new method uses elements of the Cavalieri Indivisible method and Isaac Newton's boundary method, thus achieving higher accuracy with respect to generated objects compared to 3D systems that use the rules of trigonometry in the construction of geometric bodies. This article performs a comparative analysis between a traditional and a new method for generating 3D geometric objects according to certain parameters and criteria. The new method involved in the analysis was proposed by the author of the report. While the traditional one is based on trigonometry. Two parameters were studied, one for accuracy in generating objects, and the second determining speed. In order to generate cylindrical bodies, are used the quadratic Bézier curve and the 3D modeling technique known as an extrusion, which transforms two-dimensional objects into three-dimensional ones.. One way to generate a prism and pyramid is by extruding polygons. This report presents a new way of constructing edged bodies. The considered technique for 3D modeling participates in the analysis of the studied methods
THE INFLUENCE OF THE COVID-19 PANDEMIC ON ALLOCATION OF ASSETS IN INVESTORS PORTFOLIO
No full textInvesting during a pandemic is very challenging. Even in these difficult times, the investor must appropriately allocate assets into his portfolio. In this article, we discuss investing in the stock market. We are interested in creating portfolios of shares that consist of financial assets. The individual methods we use are designed to provide an allocation of funds in between individual shares. In the modern portfolio theory, the Markowitz model (Markowitz, 1952) is being used to solve these problems. The paper's main goal is to propose an efficient, robust approach to solve the Markowitz optimization problem adjusted for periods of a global decline in financial markets. In our research, we focus on robust optimization. Instead of precisely given input parameters, we propose a set of parameters from which we always select the worst possible parameter (so-called worst-case optimization). The robustness of optimization is achieved using so-called filter matrices. These matrices are used to modify historical data directly during optimization. The proposed model modifies the data by using different lengths of historical returns. Our proposed model is then compared with the original Markowitz non-robust model. We compare these two models using the properties of the second derivative of the optimization problem. Our results are visualized for different levels of investor’s risk aversion. We present our methods on historical price data of five randomly selected companies traded on the US market. By comparing the proposed robust approach with the non-robust one, we show that different lengths of historical returns capture volatility changes earlier. The investor can thus reduce his risk aversion and increase his expected returns