Two Hemisphere Model Driven Approach for Generation of UML Class Diagram in the Context of MDA

The Model Driven Architecture (MDA) separates the system business aspects from the system implementation aspects on a specific technology platform. MDA proposes a software development process in which the key notions are models and model transformation, where the input models are platform independent and the output models are platform specific and can be transformed into a format that is executable. In this paper principles of MDA and model transformations are applied for generation of UML class diagram from two hemisphere model, which is presented in the form of business process model related with concept model. Two hemisphere model is developed for the problem domain concerned with an application for driving school and UML class diagram is generated using the approach offered in the paper

Epidemiology of the vestibular schwannomas in Ukraine and our experience of surgical and radiosurgical treatment

Aim: Figuring out the occurrence of vestibular schwannomas (VS) and their management tendencies in Ukraine.Materials and methods: Data about VS detection and treatment were collected among all Ukrainian neurosurgical and radiological facilities which are enrolled in providing care for these patients. Together with those who were treated overseas the total number in 2016-2018 was 903 people. There were 665 cases (73.6  %) treated surgically, 124 cases (13.8  %) irradiated and 114 (12.6  %) observed via serial imaging.Results: The prevalence of VS in Ukraine is about 7.27 per 1 million people which corresponds to data around the world (CBTRUS trial suggested VS incidence 10-20 people per 1 million during 2004-2009).Most of verified VSs were treated surgically (73.6  %), lesser part was irradiated (13.8  %) and 12.7 % were followed-up by wait-and-scan strategy. Our data regarding surgical management was higher than worldwide. At the same time, the volume of detected tumors was much larger in comparison to published data. Seventy-three per cent of all cases were Koos T4 tumors as a possible result of poor diagnosis and lack of alertness making surgical interventions more common and difficult.Total and subtotal resection rate was 79  % as the result of combined microsurgical and endoscopic techniques under intraoperative electrophysiological neuromonitoring guidance. The facial nerve was preserved in 94.2  % of cases, cochlear — in 8.5  % of cases. The average mortality rate during 2016-2018 in Ukraine was 3.1  % with 1.3  % in Subtentorial Neurooncology Department of the Romodanov Neurosurgery Institute.Conclusions: For further improvements and development of optimal management strategies for patients with VS, it is necessary to improve earlier diagnosis and reasonable to provide neurosurgical care in high-volume centers based on the profound expertise with further advances in technologies for functionally favorable outcomes

Definition of the Criteria for Layout of the UML Use Case Diagrams

Nowadays, the topicality and applicability of model-driven development in the object-oriented development approach has increased, so it is important that created models and diagrams display not only the content, but also visually reflect information. Transparent diagram placement that influences work productivity is important for displaying information. Manual layout of diagrams is a time-consuming activity, which can also be ineffective, so in this paper the application of UML use case automatic layout is reviewed. The paper also examines the requirements of use case diagrams and placement criteria, which will serve as a basis for the creation of an automatic use case diagram layout algorithm

Results From Expert Survey on System Analysis Process Activities

System analysis is a crucial and complex step in software engineering process, which affects the overall success of the project and quality of the project outcome. Even though Agile methods have become widely popular, these methods have no structure when it comes to requirements elicitation and specification, which can have impact on whether a project has favourable outcome. Nevertheless, regardless of the chosen approach by industry practitioners, it is important to identify, which activities are currently performed, and analyse the causes and possible issues, which are encountered. The paper presents results from expert survey on the importance of activities related to requirements elicitation, analysis and specification process and the use of tools to support this process. Delphi method, which is used to evaluate the responses, is described. Lists of activities are ranked according to importance and additional information on expert responses is given in the paper. The information can give an insight into the activities and tools that are used in the industry

Mapping of Activities for Object-Oriented System Analysis

Even though object-oriented approach exists for more than 20 years, there are many issues regarding objectoriented system analysis: ambiguity, incompleteness and redundancy in requirements, difficulties with definition and traceability of non-functional requirements, requirements ignorant of business processes that are important for business operations and others. Although software can be engineered using many methodologies, different approaches to the analysis should be considered as they can provide a solution to the known issues. The paper describes the result of the research on object-oriented system analysis in a form of mapping activities offered in advanced software development methods

Applied Computer Systems

The Journal Applied Computer Systems is an open access scientific journal published biannually in May and December. The journal serves for experience generation in computer science and information technologies use in different applications and is a source of information for the industry practitioners, for academic personnel and students. The journal publishes research papers describing new results, original ideas and applications or reports on the development and maintenance of actual systems addressing issues concerning theory, development, management and applications of advanced applied computer science

Anemic Domain Model vs Rich Domain Model to Improve the Two-Hemisphere Model-Driven Approach

Evolution of software development process and increasing complexity of software systems calls for developers to pay great attention to the evolution of CASE tools for software development. This, in turn, causes explosion for appearance of a new wave (or new generation) of such CASE tools. The authors of the paper have been working on the development of the so-called two-hemisphere model-driven approach and its supporting BrainTool for the past 10 years. This paper is a step forward in the research on the ability to use the two-hemisphere model driven approach for system modelling at the problem domain level and to generate UML diagrams and software code from the two-hemisphere model. The paper discusses the usage of anemic domain model instead of rich domain model and offers the main principle of transformation of the two-hemisphere model into the first one

A Prototype of Description Language for the Two-Hemisphere Model

Nowadays, it is a modern trend to develop a CASE tool for system modelling with an ability to transform models defined in different notations and also to generate a program code. However development of such a tool often involves experimentation with transformation algorithms that may require changes to the source model structure. Since CASE tools are basically used to represent a model in diagram’s form, implementing experimental changes in a modelling tool can require additional effort. In order to solve this problem, authors propose a way of describing the two-hemisphere model using Domain Specific Language. This paper covers the language’s syntax as well as provides an example of the two-hemisphere model defined with its help

Brief Overview of Modelling Methods, Life-Cycle and Application Domains of Cyber-Physical Systems

Cyber-Physical Systems (CPSs) are systems that connect the physical world with the virtual world of information processing. They consist of various components that work together to create some global behaviour. These components include software systems, communication technologies and sensors, executive mechanisms that interact with the real world, often including embedded technologies. One CPS may include a variety of components from different manufacturers or service providers, often without even knowing that their products and services are integrated with others as a result of CPS. This paper systematises information about CPS modelling methods and domains and presents the CPS modelling cycle – from abstraction to architecture and from concept to realisation

Reflection of Arctic geocultures in the sounding attributes of the shaman costumes of Sakha, Evenks and Nganasans

The purpose of this research is to study the sounding pendants on the shamanic costume of the Evenks, Sakha and Nganasans in the unity of the shamanic ritual complex and ritual musical traditions. Shamanic pendants are interpreted as a special text of culture, a reflection of the geocultural ideas of the peoples of the Arctic. The paper is based on the materials of field research carried out by the authors in Taimyr in 1989-1990, in the Olenek Evenk national region of Yakutia in 2014 and scientific publications. The sound world of shamanic ritual is a complex phonic picture, which is formed when using vocal, verbal, vocal-speech, signal, instrumental types of intonation. The movements of shaman are accompanied by the sound of colliding pendants on the costume of shamans and its components (headband, shoes, mittens). The sounding pendants were described by ethnographers and musicologists, but they were not considered in connection with geocultural studies. Metal pendants on a shaman costume mark sacred spatial models of the Universe (images of heavenly bodies - the sun, the moon, stars), mythological spaces of the Upper, Middle and Lower worlds inhabited by the shaman's helper spirits - birds, animals, anthropomorphic creatures, they symbolize parts of the human body, etc. The prospects for the study of shaman costume pendants as a symbolic embodiment of the landscape are contained in a more complete description and generalization of all known materials, including the analysis of shaman costumes from ethnographic museum collections