CBU International Conference on Innovations in Science and Education
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291 research outputs found
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PARANEOPLASTIC ECZEMA AS AN INITIAL MANIFESTATION OF A RENAL CELL CARCINOMA
No full textParaneoplastic skin manifestations are well-known accompanying disorders in cases with a malignant tumor. If not treated, some may lead to serious disability. In fact, these conditions disappear after the tumor removal. Plantar hyperkeratosis as the first manifestation of clearcell renal cell carcinoma has not been reported. We present a patient with severe untreatable hyperkeratosis of the soles of the feet. The paraneoplastic etiology of the eczema was suggested, and a left kidney tumor was diagnosed and operated. Rapid improvement of the keratoderma eczema was observed within a week of the tumor removal. The patient has no local and distant metastases.
Paraneoplastic skin manifestations as initial syndromes of malignant disease can help in the early diagnosis of cancer at a stage that allows complete cure
SURFACE ROUGHNESS OF LITHIUM DISILICATE PRESS CERAMICS AFTER DIFFERENT TYPES OF POLISHING
No full textINTRODUCTION: The smoothness of a ceramic’s surface is very important of its esthetic and prophylactic qualities.
AIM: The purpose of this investigation is to study the possibilities of polishing lithium disilicate ceramics after making a correction on the glazed ceramic surface.
MATERIALS AND METHODS: The subject of the study were 20 test samples made of lithium disilicate press ceramics. They were divided into 4 groups according to the method of processing and polishing. Group 1 was treated with a red diamond bur and polishing set; Group 2 was treated with a green diamond bur and polishing set; Group 3 was treated with a red diamond bur, polishing set and diamond paste; Group 4 was treated with a diamond bur with green coding, polishing set and diamond paste. The samples were examined with an atomic force microscope to observe the change in surface relief. The reference point for comparison was the surface of the glazed ceramic.
RESULTS: After polishing with diamond paste, the surface became smoother compared to the treatment of the surface with a polishing kit alone.
CONCLUSION: Regardless of the polishing protocol used, there was a difference in the topography of the ceramic surface before and after treatment
CLINICALLY EVALUATED ACCURACY OF SINGLE GUIDED IMPLANTATIONS WITH TWO DIFFERENT SYSTEMS – PRELIMINARY RESULTS
No full textIntroduction: Guided single implant placement ensures an optimal implant position, enables in-surgery immediate loading, and creates a predisposition for predictable treatment results.
Aim: This article aims to present the surgical and loading protocols and assess the accuracy of two guided implant systems.
Materials and methods: Ten patients missing a single molar were included. The semi-guided procedures with the two implant systems – AB Dental and Alpha Bio-Tec, were randomly assigned to each participant. The computer-assisted planning was performed with Implant Studio (3Shape, Denmark). Surgical guides and long-term, temporary, screw-retained restorations were virtually generated within the 3Shape system. Surgical appliances were printed from SG resin (Formlabs, USA), and crowns were milled from Telio CAD (Ivoclar Vivadent, Lichtenstein). Planning accuracy was evaluated based on the crown’s fit and relation to the adjacent teeth and antagonists.
Results and discussion: The patients included for preliminary analysis (6 female and 4 male) were with a mean age of 33.42. The youngest was 24, and the oldest 49 years old. There were no surgical and technical complications for the period of evaluation, which ranged from 1 to 3 months. The crown’s fit was excellent in 8 cases. In two cases, minor adjustments were necessary – 1 in relation to the antagonists and 1 to the adjacent teeth. In one case, a healing screw was placed for 48 hours to facilitate adequate soft-tissue space for the Ti-base.
Conclusion: The preliminary results presented in this report suggest that the clinical and laboratory protocols used for guided implantation and immediate loading are highly efficient
A SURVEY OF E-COMMERCE SECURITY THREATS AND SOLUTIONS
No full textE-commerce security is part of the Web security problems that arise in all business information systems that operate over the Internet. However, in e-commerce security, the dimensions of web security – secrecy, integrity, and availability-are focused on protecting the consumer’s and e-store site’s assets from unauthorized access, use, alteration, or destruction. The paper presents an overview of the recent security issues in e-commerce applications and the usual points the attacker can target, such as the client (data, session, identity); the client computer; the network connection between the client and the webserver; the web server; third party software vendors. Discussed are effective approaches and tools used to address different e-commerce security threats. Special attention is paid to Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF), phishing attacks, SQL injection, Man-in-the-middle, bots, denial-of-service, encryption, firewalls, SSL digital signatures, security certificates, PCI compliance. The research outlines and suggests many security solutions and best practices
A COMPARISON OF CREATING AN ANDROID APPLICATION USER INTERFACE IN XAML AND IN C# CODE
No full textAlmost every Android user application has some kind of user interface. Android programmers who create Xamarin.Forms applications and who uses the Microsoft Visual Studio development environment to do so can create user interfaces in the XAML (the Extensible Application Markup Language) or in the C# programming language. This paper deals with a comparison of creating this user interface by the first and the second way. We demonstrate the differences in the creation of Android application user interfaces in XAML and in C# by way of using two of our Android applications which were created by the Microsoft Visual Studio 2019 Enterprise, which work as text editors with the ability to store text to disc, and have user interfaces that are visually identical. However, the user interface of the first Android application was created in XAML with a C# support code, whereas the user interface of the second Android application was created entirely in C#. While comparing the source codes of the user interfaces of both these Android applications, we identify the advantages and disadvantages of both approaches to creating a user interface and we try to find out which of these approaches is better for maintaining and modifying user interfaces. In this study, we also contrast the processes of handling events of controls of a user interface created in the XAML code for the first Android application as well as that of the same user interface created in the C# code for the second Android application. Furthermore, we were interested in determining whether the different ways of creating user interfaces affected the execution time of basic operations that included disc files that were performed on the same data by both the applications. We assume that it does not fundamentally affect the execution time, and so, we performed an experiment to confirm or refute our assumption
eRESEARCH IN THE DEGREE OF ADHERENCE BY ASTHMA PATIENTS – A PILOT STUDY
No full textIntroduction: Non-adherence to treatment is a global issue which in recent years has reached epidemic proportions. The WHO has reported that treatment adherence in chronic patients is 50% in developed countries on average. According to data from the Association of Bulgarians with Bronchial Asthma (ABBA) the percentage of asthma patients who are not regularly treated is the highest compared with other chronic diseases. Non-adherence to treatment not just influences the patient’s quality of life but increases the health care costs in society.
Objectives: The aim of this study is to analyse the degree of adherence to prescribed treatment in asthma patients.
Methods: An anonymous survey was made among 50 outpatients with asthma using an adapted survey card consisting of two parts: a questionnaire that collects information about the demographic profile of the patient (gender, age, educational background, etc) and a validated tool, the Morisky test, which is a questionnaire that defines the degree of treatment adherence.
Results: The results from the Morisky test (Morisky coefficient 2.22) showed a mean degree of adherence both for the whole sample and for men and women separately, with a minimal difference of 0.01 in favour of men (Morisky coefficient 2.24 in men and 2.23 in women).
Conclusions: The studied asthma patients show unsatisfactory adherence to the prescribed treatment. The mean degree of adherence reported in the study indicates the need for educating patients, monitoring and collaboration among doctors, patients, pharmacists and other healthcare professionals
AN APPROACH FOR DEVELOPMENT AND APPLICATION OF CPSS- EDUCATIONAL ENVIRONMENTS IN BULGARIAN SCHOOL
No full textModern realities in the era of Industry 4.0 and the global Covid-19 pandemic place new challenges to education. It is a fact that classical learning, supported by modern information and communication technologies, provides an effective learning process, but the Covid-19 realities require a rapid transition to distance absentee learning. The use of computer-based training systems and cloud platforms has its advantages, but also problems related to the low level of personalization of the learning process and the adaptability of the learning content to the specific characteristics of each student.
Cyber-physical and social systems (CPSS) largely solve the problems associated with integrating processes and interactions in the virtual world with the dynamically changing conditions of the physical world in which learning occurs. This gives grounds to draw the attention of specialists to the creation of CPSS educational platforms for secondary school. Following this approach, we created a prototype of ь CPSS educational space called BLISS. The results of the test application of this platform in the school environment give us reason to believe that if we put the learner with his/her peculiarities, goals, and interests at the center of such a system, and present him/her in the virtual space through his / her personal assistant, we could significantly increase the interactivity of the learning process and the adaptability of the offered learning content
SALES EXPERIMENT OF A NEWSPAPER PUBLISHER: "PAY WHAT YOU WANT"
No full textDigitalization poses great challenges for companies and especially for newspaper publishers. Due to the large number of digital competitors on the advertising market, media companies are forced to proactively win customers. A major German media company has thus dared to experiment and put the question of pricing for booking newspaper advertising in the hands of its customers. With the so-called "pay what you want" (PWYW) payment model, customers can be won and additional budgets spent. This paper explores the question of whether PWYW is a suitable sales model for newspaper companies and which factors have an influence. The results of the interviews with those involved show solutions, opportunities, problems and that additional turnover can be generated
ASSESSMENT OF SELECTED DETERMINANTS OF BURNOUT SYNDROME AND COPING STRATEGIES IN TERMS OF GENDER IN ENTREPRENEURS
No full textNowadays, the issue of burnout syndrome is relatively extensive and increasingly manifested. Although burnout syndrome can affect anyone, certain differences in its occurrence are noticeable, especially in personality traits, gender, or the character of work. This article aims to assess the signals of burnout syndrome and coping strategies in terms of gender. The main determinants of burnout syndrome are Emotional Exhaustion, Depersonalization, and Personal Accomplishment and are included in the Maslach Burnout Inventory, consisting of twenty-two questions, separately dealing with mentioned individual determinants. The Brief Cope inventory, which outlines fourteen strategies about how to cope with stress, was used to find out which coping strategies entrepreneurs used in difficult situations. The research was carried on a representative sample of entrepreneurs (N = 113) in the Slovak Republic by online questionary. The result of the analysis reported the existence of statistically significant differences (p < .05) between determinants of burnout syndrome and coping strategies in terms of gender among entrepreneurs in the assessment of selected determinants. Entrepreneurs used mostly problem-focused coping strategies like Active coping and Planning, an emotion-focused coping strategy of Humor, a dysfunctional coping strategy of Venting to mitigate the influence of difficult situations. The research assumed the existence of positive differences between the assessment of determinants of burnout syndrome in terms of gender. The results reported a higher tendency of female entrepreneurs to be more often emotionally exhausted than males. Personal Accomplishment and Depersonalization did not report any statistically significant differences in terms of gender
NON-FINANCIAL INFORMATION REPORTING AFTER 2016 FOR THE EXAMPLE OF BULGARIAN GREENHOUSE GAS EMITTERS
No full textAir pollution is one of the main environmental reasons for many diseases in Bulgaria. Plenty of studies indicate that the country is still far from achieving air quality levels that do not pose a risk to people and the environment.
The current research is directed toward eight companies in Bulgaria, which are responsible for over 70% of greenhouse gas emissions from fixed installations. The study was conducted during the period of 2016 to 2019. The main hypothesis is that due to the public importance of these companies’ activities, the quantity and quality of non-financial information disclosed by them will be significant. Additionally, it is examined how the required obligation for some companies to publish together with their annual financial statements and non-financial declaration has reflected on the disclosures made by them. The research is conducted on the basis of annual financial statements published by the companies, non-financial declarations, annual activity reports and information contained on their websites