Proceedings of CBU in Natural Sciences and ICT最新文献

AN INNOVATIVE TECHNOLOGY FOR PRODUCTION OF AXIAL INDUCTION MOTOR 轴向感应电机的创新生产技术

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2022-12-01 DOI: 10.12955/pns.v3.317

K. Kamberov, G. Todorov, Tsvetozar Ivanov

{"title":"AN INNOVATIVE TECHNOLOGY FOR PRODUCTION OF AXIAL INDUCTION MOTOR","authors":"K. Kamberov, G. Todorov, Tsvetozar Ivanov","doi":"10.12955/pns.v3.317","DOIUrl":"https://doi.org/10.12955/pns.v3.317","url":null,"abstract":"This study presents the latest technology to produce axial induction motors for application in electric vehicles. A review of current state-of-the-art technology is performed on the solutions with soft magnetic powder core or machined parts that are not appropriate for mass production. Therefore, new technology is proposed, based on analyzed production technologies specifics. It involves use of a standard metal strips to make both stator and rotor cores. This design includes a spirally wound strip of magnetically conductive material and stacked trapezoidal lamellas. The trapezoidal lamellae are cut using waste-free technology for e.g., guillotine, without specialized punches as in traditional engines. As a result, metal cutting operations are significantly simplified and require widely used production equipment in the industry. The developed technology is appropriate for mass production due to its relatively low cost and eases adaptability. The proposed design is at the physical prototyping and testing stage. Thus, it will be validated by testing the physical prototype in the real industrial environment. This innovative technology is patented and currently under commercialization.","PeriodicalId":296102,"journal":{"name":"Proceedings of CBU in Natural Sciences and ICT","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122500745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IN VITRO STUDY OF ANTIMICROBIAL ACTIVITY OF COMMERCIAL ESSENTIAL OILS OF THE LAMIACEAE FAMILY AGAINST STAPHYLOCOCCUS AUREUS ATCC 29213, ESCHERICHIA COLI ATCC 25922 AND CANDIDA ALBICANS ATCC 10231 兰科商品精油对金黄色葡萄球菌atcc 29213、大肠杆菌atcc 25922和白色念珠菌atcc 10231抑菌活性的体外研究

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2022-12-01 DOI: 10.12955/pns.v3.318

Yordanka Mihaylova, N. Ermenlieva, S. Stamova, Silviya Mihaylova, E. Georgieva, A. Tsvetkova, K. Georgieva

{"title":"IN VITRO STUDY OF ANTIMICROBIAL ACTIVITY OF COMMERCIAL ESSENTIAL OILS OF THE LAMIACEAE FAMILY AGAINST STAPHYLOCOCCUS AUREUS ATCC 29213, ESCHERICHIA COLI ATCC 25922 AND CANDIDA ALBICANS ATCC 10231","authors":"Yordanka Mihaylova, N. Ermenlieva, S. Stamova, Silviya Mihaylova, E. Georgieva, A. Tsvetkova, K. Georgieva","doi":"10.12955/pns.v3.318","DOIUrl":"https://doi.org/10.12955/pns.v3.318","url":null,"abstract":"The aim of this study is to evaluate the potential antimicrobial activity of four commercial essential oils: Thymus vulgaris and Origanum vulgare (two for external use and two for internal one). The antimicrobial activity of the tested essential oils was determined by using the serial two-fold dilutions method. The following bacterial and yeast strains were purchased and used in the study: E. coli, S. aureus, and C. albicans. The minimal inhibitory concentration (MIC) of Thyme oil (external use) against E. coli, and C. albicans was 2 µg/ml and 4 µg/ml, respectively. The observed minimum bactericidal concentration (MBC) for Thyme oil (external use) against S. aureus was 8 µg/ml. The Thyme oil for internal use demonstrated higher antimicrobial activity than the topical form. The evaluated MBC against S. aureus was 4 µg/ml, and for E.coli, and C. albicans, it was even lower than 1 µg/ml. While determining the MBC of Oregano oil (external) against S. aureus, E. coli, and C. albicans, antimicrobial activity is reported as : 16 µg/ml against S. aureus, 4 µg/ml for E.coli and 32 µg/ml against C. albicans. Also, the observed antimicrobial activity of Oregano oil for internal use is higher than external form – 2 µg/ml against S. aureus and lower than 1 µg/ml for the other pathogens. The results of MIC and MBC determination of Thyme and Oregano oils showed that E. coli, S. aureus and C. albicans demonstrate high sensitivity and can be used in therapeutic practice, and some of them probably in combination with other antimicrobial agents.","PeriodicalId":296102,"journal":{"name":"Proceedings of CBU in Natural Sciences and ICT","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127758069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RAPID MATERIALIZATION OF A SMALL SERIES OF BONE STRUCTURE REPLICATIONS FROM A DIGITALIZED MODEL, CREATED BY COMPUTER TOMOGRAPHY 通过计算机断层扫描创建的数字化模型快速物质化一小部分骨结构复制

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2021-10-24 DOI: 10.12955/pns.v2.147

T. Gavrilov, G. Todorov, Y. Sofronov

{"title":"RAPID MATERIALIZATION OF A SMALL SERIES OF BONE STRUCTURE REPLICATIONS FROM A DIGITALIZED MODEL, CREATED BY COMPUTER TOMOGRAPHY","authors":"T. Gavrilov, G. Todorov, Y. Sofronov","doi":"10.12955/pns.v2.147","DOIUrl":"https://doi.org/10.12955/pns.v2.147","url":null,"abstract":"The recreation of bone structures from the human body has very complex geometry and a lack of symmetry. A small series of vertebrae replications, digitized by computed tomography, could serve in exercises for medical students to help them perform operational planning for inserting implant structures, cage type implants, or screws and rods implants. Additionally, these replications could be used in the planning of extraordinary clinical cases, for example complex vertebrae deformities. The replicated structure could be fulfilled in a 1:1 ratio or scaled. For the selection of an appropriate production technology a block diagram is followed which considers suitable technologies for the production of polymer parts, compared to the series size and the complexity of the geometry. Both criteria must be taken into account when considering which technology should be used in the production of polymer parts. Comparing the advantages and disadvantages of additive technologies and replication in silicone mold, the best choice for technology is set to be replication in silicone mold. The initial preparation for the manufacture of the silicone mold includes a detailed analysis of the geometry of the model for replication. The first step includes defining the runner place as well as mounting the runner to the model. To ensure the mold is completely filled while casting, positive-shaped vents in the mold are defined. Because of the complex shapes of the spinal vertebrae and the need to take out elements in many directions, the mold is divided into multiple parts. A block-diagram that summarizes the entire manufacturing cycle for replication in a silicone mold is developed.","PeriodicalId":296102,"journal":{"name":"Proceedings of CBU in Natural Sciences and ICT","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115017841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DESIGN OF SPECIALIZED SURGICAL SCREW INSERTED IN PLATE TYPE CERVICAL IMPLANT 钢板型颈椎内固定专用手术螺钉的设计

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2021-10-24 DOI: 10.12955/pns.v2.146

Krasimira Dimova, G. Todorov, Y. Sofronov

{"title":"DESIGN OF SPECIALIZED SURGICAL SCREW INSERTED IN PLATE TYPE CERVICAL IMPLANT","authors":"Krasimira Dimova, G. Todorov, Y. Sofronov","doi":"10.12955/pns.v2.146","DOIUrl":"https://doi.org/10.12955/pns.v2.146","url":null,"abstract":"In the field of Implantology the screws are an important part because they transfer the loads that occur in the bones. Surgical screws are similar to those in Mechanical Engineering, but the materials should have specific characteristics like biocompatibility, strength, corrosion resistance and fatigue strength. The main function of the surgical screw is to create pressure between two bones which is necessary in order to heal the injured bones. The surgical screw transforms all forces of the movements to pressure and distributes the pressure on the bone’s surfaces. Surgical screws can help in the setting of implants into an injured area. It also ensures static position of the injured bones. The research aims to analyse how the surgical screw type affects the bone of the patient with the help of the Finite Elements Method (FEM). Based on the results from the analysis of the surgical screw a new specialized surgical screw was designed with complex geometry to withstand the occurring loads and also be able to transfer them to the bone tissue. In additional, a comparison analysis between two different types of surgical screws was conducted. This paper shows how a surgical screw could be optimized in order to improve its function with the help of virtual tools. Finally, the materials used are biocompatible and often used for such screws and surgical implant analysis, the challenge was to recreate the bone tissue properties and to used them in the FEM analysis.","PeriodicalId":296102,"journal":{"name":"Proceedings of CBU in Natural Sciences and ICT","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114809867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

STUDY OF THE CORRELATION BETWEEN THE CONTENT OF NANOOBJECTS AND SURFACE FEATURES 纳米物体含量与表面特征的相关性研究

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2021-10-24 DOI: 10.12955/pns.v2.152

N. Kamanina

引用次数: 0

DATAFICATION AS A NECESSARY STEP IN THE PROCESSING OF BIG DATA IN DECISION-MAKING TASKS OF BUSINESS 数据化是企业决策任务中处理大数据的必要步骤

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2021-10-24 DOI: 10.12955/pns.v2.156

M. Misut, Pavol Jurík

{"title":"DATAFICATION AS A NECESSARY STEP IN THE PROCESSING OF BIG DATA IN DECISION-MAKING TASKS OF BUSINESS","authors":"M. Misut, Pavol Jurík","doi":"10.12955/pns.v2.156","DOIUrl":"https://doi.org/10.12955/pns.v2.156","url":null,"abstract":"The digital transformation of business in the light of opportunities and focusing on the challenges posed by the introduction of Big Data in enterprises allows for a more accurate reflection of the internal and external environmental stimuli. Intuition ceases to be present in the decision-making process, and decision-making becomes strictly data-based. Thus, the precondition for data-based decision-making is relevant data in digital form, resulting from data processing. Datafication is the process by which subjects, objects and procedures are transformed into digital data. Only after data collection can other natural steps occur to acquire knowledge to improve the company's results if we move in the industry's functioning context. The task of finding a set of attributes (selecting attributes from a set of available attributes) so that a suitable alternative can be determined in its decision-making is analogous to the task of classification. Decision trees are suitable for solving such a task. We verified the proposed method in the case of logistics tasks. The analysis subject was tasks from logistics and 80 well-described quantitative methods used in logistics to solve them. The result of the analysis is a matrix (table), in which the rows contain the values of individual attributes defining a specific logistic task. The columns contain the values of the given attribute for different tasks. We used Incremental Wrapper Subset Selection IWSS package Weka 3.8.4 to select attributes. The resulting classification model is suitable for use in DSS. The analysis of logistics tasks and the subsequent design of a classification model made it possible to reveal the contours of the relationship between the characteristics of a logistics problem explicitly expressed through a set of attributes and the classes of methods used to solve them.","PeriodicalId":296102,"journal":{"name":"Proceedings of CBU in Natural Sciences and ICT","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115214176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LINGUISTIC SUMMARIES IN EVALUATING ELEMENTARY CONDITIONS AND THEIR APPLICATION IN SOFTWARE ENVIRONMENT 评价基本条件的语言总结及其在软件环境中的应用

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2021-10-24 DOI: 10.12955/pns.v2.159

Pavol Sojka

{"title":"LINGUISTIC SUMMARIES IN EVALUATING ELEMENTARY CONDITIONS AND THEIR APPLICATION IN SOFTWARE ENVIRONMENT","authors":"Pavol Sojka","doi":"10.12955/pns.v2.159","DOIUrl":"https://doi.org/10.12955/pns.v2.159","url":null,"abstract":"Data users are generally interested in two types of aggregated information: summarization of the selected attribute(s) for all considered entities and retrieval and evaluation of entities by the requirements posed on the relevant attributes. Less statistically literate users (e.g., domain experts) and the business intelligence strategic dashboards can benefit from linguistic summarization, i.e. a summary like most customers are middle-aged can be understood immediately. Evaluation of the mandatory and optional requirements of the structure P1 and most of the other posed predicates should be satisfied beneficial for analytical business intelligence dashboards and search engines in general. This work formalizes the integration of the aforementioned quantified summaries and quantified evaluation into the concept of database queries to empower their flexibility by, e.g., the nested quantified query conditions on hierarchical data structures. Later in our work, we adapted our research into practical application. We created a software environment for evaluating data based on a dataset retrieved from The Statistical Office of the Slovak republic. These datasets are aimed mainly on landscape characteristics like altitude, area sizes of towns and villages, and similar parameters. Based on user's preferences, our system recommends the most suitable place for holidays to spend on.","PeriodicalId":296102,"journal":{"name":"Proceedings of CBU in Natural Sciences and ICT","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128458037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MODEL-ORIENTED PROGRAMMING 面向模型的编程

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2021-10-24 DOI: 10.12955/pns.v2.154

L. Kruglov, Yury I. Brodsky

引用次数: 1

A COMPARISON OF CREATING AN ANDROID APPLICATION USER INTERFACE IN XAML AND IN C# CODE 用xaml和c#代码创建android应用程序用户界面的比较

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2021-10-24 DOI: 10.12955/pns.v2.153

I. Košťál, M. Misut

{"title":"A COMPARISON OF CREATING AN ANDROID APPLICATION USER INTERFACE IN XAML AND IN C# CODE","authors":"I. Košťál, M. Misut","doi":"10.12955/pns.v2.153","DOIUrl":"https://doi.org/10.12955/pns.v2.153","url":null,"abstract":"Almost 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.","PeriodicalId":296102,"journal":{"name":"Proceedings of CBU in Natural Sciences and ICT","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128196859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

STUDY OF THE DIGITIZATION LEVEL OF MANUFACTURING COMPANIES 制造业企业数字化水平研究

Proceedings of CBU in Natural Sciences and ICT Pub Date : 2021-10-24 DOI: 10.12955/pns.v2.149

P. Grznár, Beáta Furmannová, Vladimír Vavrík, N. Burganová, Š. Mozol, Maria Starek

{"title":"STUDY OF THE DIGITIZATION LEVEL OF MANUFACTURING COMPANIES","authors":"P. Grznár, Beáta Furmannová, Vladimír Vavrík, N. Burganová, Š. Mozol, Maria Starek","doi":"10.12955/pns.v2.149","DOIUrl":"https://doi.org/10.12955/pns.v2.149","url":null,"abstract":"Today, advances in ICT are exponential in nature, and many technologies are now being added from which businesses can benefit from their application in their processes. Digitization is a wide area that already finds active application in businesses processes. It helps create new possibilities in terms of improving process performance, responding more quickly to changes, or helping to reduce costs for different production areas. In general, digitization in an enterprise can be understood as having specific financial as well as personnel requirements. There are few levels of digitalization that we can achieve (document digitalization, digital factory, virtual factory, and smart factory). The research goal of the article is a detailed description and comparison of the individual digitization levels and their tools. The article contains two case studies in which the analysis of processes in the form of questionnaires defines the appropriateness of the level of digitization. Also, based on the analysis, it is possible to say each of the levels of digitization has a particular area of application depending on the nature of production. The main findings of the case studies are that irrelevant digitization is costly and personally demanding without achieving more significant results without analysis. Companies' more efficient operation can be achieved even if the company does not use the latest technological advances and what simple changes need to be incorporated.","PeriodicalId":296102,"journal":{"name":"Proceedings of CBU in Natural Sciences and ICT","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129775693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0