scholarly journals Integrative model of a magnetically levitated train's traction force

2017 ◽  
Vol 3 (1) ◽  
pp. 58-68 ◽  
Author(s):  
V A Polyakov ◽  
N M Hachapuridze
Keyword(s):  
Process Model ◽  
Traction Force ◽  
Integrative Model ◽  
Energy Transformation ◽  
Correct Description ◽  
Present Stage ◽  
Advantages And Disadvantages ◽  
Analysis And Synthesis ◽  
Electromechanical Energy ◽  
Magnetically Levitated

Magnetically levitated train's (MLT) motor's traction force realization (TFR) occurs in the process of electromechanical energy transformation by inductor's and armature's magnetic fields interaction. Accordingly, the aim of this study is to obtain a correct description of such energy transformation. At the present stage, a mathematical and, in particular, computer simulation is the main and most universal tool of process’s and system's analysis and synthesis. At the same time, a radical advantage of this tool makes it even more important precision selecting a particular methodology of the study. Especially important it is for such a large and complex system, which is an MLT. Therefore the special attention in the work is given to the reasoned choice and substantiation of research paradigm's selective features. The results of analysis of existing versions of TFR process model indicate that each of these versions possesses both advantages and disadvantages. Therefore, one of the main results of this study should be the creation of a mentioned process's mathematical model's new version. The created version of the model should preserve the advantages of previous versions, but to be free of their disadvantages. The rationality of application, for the purposes of motor's TFR process research, of the integrative holistic paradigm was convincingly proved in the work. The priority of creation of such paradigm and corresponding version of the TFR process model constitute the scientific novelty of research. The main manifestation of practical value of this research in the opportunity, in case of use of its results, of a significant increasing of efficiency of MLT's dynamic investigations, on the condition that their generalized costs will not increase.

scholarly journals Model of a magnetically levitated train's levitation forc

2017 ◽  
Vol 3 (3) ◽  
pp. 5-24
Author(s):  
Vladislav A Polyakov ◽  
Nicholas M Hachapuridze
Keyword(s):  
Levitation Force ◽  
Electric Circuit ◽  
Field Theories ◽  
Practical Significance ◽  
Research Paradigm ◽  
Correct Description ◽  
Present Stage ◽  
Model Account ◽  
Analysis And Synthesis ◽  
Magnetically Levitated

The implementation of the magnetically levitated train’s (MLT) levitation force (LF) occurs during the interaction between fields of superconductor train (STC) and short-circuited track contours (SCTC), which are the elements of levitation module (LM). Purpose. Based on above, the purpose of this study is to obtain a correct description of such interaction. At the present stage, the main and the most universal tool for the analysis and synthesis of processes and systems is their mathematical and, in particular, computer modeling. At the same time, the radical advantages of this tool make even more important the precision of choosing a specific methodology for research conducting. Methodology. This is particularly relevant in relation to such large and complex systems as MLT. For this reason, the work pays special attention to the reasoned choice of the selective features of the research paradigm. The analysis of existing versions of LF implementation’s models show that each of them, along with the advantages, also has significant drawbacks. Results. In this regard, one of the main result of the study should be the construction of this force implementation’s mathematical model, which preserves the advantages of the mentioned versions, but would be free from their shortcomings. The rationality of application, for the train’s LF researching, of an integrative holistic paradigm, which assimilates the advantages of the electric circuit and magnetic field theories, is reasonably justified in work. The scientific novelty of the research. The priority of creation of such a paradigm and the corresponding version of the implementation of LF’s model account for the novelty of the research. Practical significance of the work. The practical significance consists in the possibility, in case of using its results, of significantly increasing the efficiency of dynamic MLT research while reducing their resource costs.

THE APPLICATION OF WELLBEING RESEARCH TO REGIONAL LEVEL IN LITHUANIA

2015 ◽  
Author(s):  
Gintarė VAZNONIENĖ ◽  
Bernardas VAZNONIS
Keyword(s):  
Social Sciences ◽  
Regional Development ◽  
Good Practice ◽  
Research Problem ◽  
Regional Level ◽  
Advantages And Disadvantages ◽  
Foreign Countries ◽  
Analysis And Synthesis ◽  
Key Factor ◽  
Development Context

In this article the significance of wellbeing research in the regional level in Lithuania has been analyzed, the advantages and disadvantages of the objective and subjective wellbeing research have been evaluated. The results of the analysis of wellbeing research reveal that the wellbeing research in the regional level is poorly amplified, the wellbeing research in the social sciences is not marked, the wellbeing is investigated in other fields not in social sciences or according to the aims of the researher and more often causes and outcomes of social economical inequality for regional development are emphasized. Scientific studies show that wellbeing research can have big influence for shaping the future of regions because it concerns local people, their choices and overall wellbeing of a particular region. Findings from foreign countries good practice disclose that wellbeing is currently widely used as a key factor and trend for the development policy evaluation. Accordingly in this article big attention is drawn to wellbeing research possible effect for policymakers. It can be concluded that wellbeing research should become an important discussion object in the regional development context because it reveals the situation about people overall wellbeing and particular life domains. The main aim of this article is to analyse the importance of wellbeing research to regional level in Lithuania. The research problem of this article is the fact that the poor experience of wellbeing research in Lithuania insufficiently reveals the wellbeing expression and use in the regional level. In the research common research methods like analysis and synthesis of the scientific literature, analysis of documents and comparative analysis have been employed.

scholarly journals TECHNICAL CONDITION OF CORRUGATED METAL TRANSPORT STRUCTURES

2021 ◽  
pp. 38-50
Author(s):  
J. J. LUCHKO ◽  
V. V. KOVALCHUK
Keyword(s):  
Bearing Capacity ◽  
Technical Condition ◽  
The Body ◽  
Soil Environment ◽  
Metal Structures ◽  
Advantages And Disadvantages ◽  
Methods Of Calculation ◽  
Analysis And Synthesis ◽  
The Impact ◽  
Corrugated Metal

Purpose. The purpose of the work is to establish the real technical condition of transport structures made of corrugated metal structures on the basis of the analysis of scientific and technical sources.And to analyze the experience of operation of metal corrugated structures in the soil environment and to form and generalize the problems of ensuring the reliability and durability of structures made of metal corrugated structures in the conditions of operation on railways and highways of Ukraine. Methodology. To achieve this goal, a review of scientific and technical sources and regulations of different countries on the technical condition of transport facilities in Ukraine was conducted. In particular, data on the distribution of bridges and pipes made of corrugated metal structures by mode of transport are given. It is shown that the development and implementation of new technologies for the repair of existing defective pipes and small bridges, both on the railways and highways of Ukraine is a very important issue. A thorough analysis of the experience of operation of corrugated metal structures in the soil environment in different countries was conducted. Data on the main inadmissible defects of pipes and the reasons of their development are given. CMS' (corrugated metal structures) corrosion and other defects are given. A number of examples of overpass defects, collapse of bridges and structures with MCS in operation are presented. The qualitative indicators of metal corrugated structures, their advantages and disadvantages are also considered, the problems and the analysis of ensuring the reliability and durability of the structures with CMS in the conditions of operation on the railways and highways of Ukraine are formulated. Findings. An analysis of domestic and foreign scientific and technical sources on the technical condition of transport facilities in Ukraine was conducted. In particular, the experience of operation of corrugated metal structures in different countries of the world is studied and generalized. The analysis and synthesis of problems of ensuring the reliability and durability of buildings with CMS in the conditions of operation on the railways and highways of Ukraine. Originality. As a result of the analysis of the technical condition of transport facilities operated on railways and highways of Ukraine, it was found that about 15 % of transport facilities – small and medium bridges and culverts on Ukrainian railways and about 45 % of transport facilities on Ukrainian roads have unacceptable defects and require immediate repair and replacement. Also, it was established on the basis of research that there are no methods for assessing the load-bearing capacity of transport facilities with CMS in the presence in the body of the embankment of the railway or highway metal corrugated structures with a diameter greater than 6 m. It was determined that standards don't include regulations on design and monitoring of CMS on railway tracks. Practical value. On the basis of these data it was possible to offer directions of theoretical and experimental research and methods of calculation, tests of CMS and diagnostics of a technical condition of transport structures with CMS. In particular, the measurement of the impact of the environment on the bearing capacity of the CMS and the measurement of residual deformations of the corrugated metal pipe on the railway track. Execution of the analysis and synthesis of methods of calculation of transport constructions with CMS will lead to improvement of methods of calculation of CMS.

Assessment of methods for analyzing the economic security of the university

2021 ◽  
Vol 20 (12) ◽  
pp. 2365-2384
Author(s):  
Elizaveta E. ERMOSHINA
Keyword(s):  
Higher Education ◽  
Security Analysis ◽  
Education Institution ◽  
Economic Security ◽  
Management Decisions ◽  
Advantages And Disadvantages ◽  
Analysis And Synthesis ◽  
Commercial Organizations ◽  
The University ◽  
Methodological Guidelines

Subject. The article investigates the analysis of economic security of a higher education institution. It defines its directions, analytical indicators, methodological guidelines, considering the specific nature of activity, which contribute to improving the economic security and the quality of management decisions made by key executives of universities. Objectives. The purpose is to conduct a critical review and evaluate the main methods of economic security analysis of higher education institutions, taking into account the specifics of their activities. Methods. The study rests on general and specific methods of cognition (analysis and synthesis, induction and deduction, grouping, comparison, etc). Results. I reviewed the existing methods of analyzing the economic security of commercial organizations and higher educational institutions, systematized advantages and disadvantages of methods developed by scientists, substantiated the need to introduce diagnostic indicators to improve the quality and efficiency of analytical information for making informed management decisions. The paper offers to conduct an analysis of economic security, using indicators of intensity and productivity of labor, which consider the specifics of activities of universities in comparison with other organizations of the public sector. Conclusions. Currently, there is no unified approach to the analysis of economic security of universities. The conducted critical assessment of methodology may form a basis for further development of ideas and methodological guidelines on the analysis of economic security, and informed and effective management decisions.

A Semantic-Enabled Framework for E-Government Systems Development

2014 ◽  
pp. 15-31
Author(s):  
Jean Vincent Fonou-Dombeu ◽  
Magda Huisman
Keyword(s):  
Critical Analysis ◽  
Process Model ◽  
Systems Development ◽  
Weighting Matrix ◽  
Advantages And Disadvantages ◽  
Support Tools ◽  
One Stop ◽  
Phases Of Development ◽  
Development Phases ◽  
Seamless Service

The ultimate goal of e-Governance is to reach the stage of seamless service delivery in one-stop e-Government. This raises the engineering issues of integration, reusability, maintenance, and interoperability of autonomous e-Government systems of government departments and agencies. Therefore, appropriate methodologies that consistently address the aforementioned engineering issues throughout clearly defined e-Government development phases are needed. This chapter provides the design and specification, of a framework that amalgamates features from maturity models, software engineering and Semantic Web domains for semantic-enabled development of e-Government systems. Firstly, the methods and techniques used for the planning, design, and implementation of e-Government systems worldwide are investigated; a critical analysis is carried out to identify their advantages and disadvantages, as well as their contribution towards addressing the aforementioned engineering issues. Secondly, the proposed framework is drawn and specified. Finally, support tools including a business process model, an alignment matrix of stages and phases of development, and a weighting matrix of the intensity of semantic activities at various phases of development is drawn and described.

A Semantic-Enabled Framework for E-Government Systems Development

2017 ◽  
pp. 501-518 ◽  
Author(s):  
Jean Vincent Fonou-Dombeu ◽  
Magda Huisman
Keyword(s):  
Critical Analysis ◽  
Process Model ◽  
Systems Development ◽  
Weighting Matrix ◽  
Advantages And Disadvantages ◽  
Support Tools ◽  
One Stop ◽  
Phases Of Development ◽  
Development Phases ◽  
Seamless Service

The ultimate goal of e-Governance is to reach the stage of seamless service delivery in one-stop e-Government. This raises the engineering issues of integration, reusability, maintenance, and interoperability of autonomous e-Government systems of government departments and agencies. Therefore, appropriate methodologies that consistently address the aforementioned engineering issues throughout clearly defined e-Government development phases are needed. This chapter provides the design and specification, of a framework that amalgamates features from maturity models, software engineering and Semantic Web domains for semantic-enabled development of e-Government systems. Firstly, the methods and techniques used for the planning, design, and implementation of e-Government systems worldwide are investigated; a critical analysis is carried out to identify their advantages and disadvantages, as well as their contribution towards addressing the aforementioned engineering issues. Secondly, the proposed framework is drawn and specified. Finally, support tools including a business process model, an alignment matrix of stages and phases of development, and a weighting matrix of the intensity of semantic activities at various phases of development is drawn and described.

A Semantic-Enabled Framework for E-Government Systems Development

2015 ◽  
pp. 311-327
Author(s):  
Jean Vincent Fonou-Dombeu ◽  
Magda Huisman
Keyword(s):  
Critical Analysis ◽  
Process Model ◽  
Systems Development ◽  
Weighting Matrix ◽  
Advantages And Disadvantages ◽  
Support Tools ◽  
One Stop ◽  
Phases Of Development ◽  
Development Phases ◽  
Seamless Service

The ultimate goal of e-Governance is to reach the stage of seamless service delivery in one-stop e-Government. This raises the engineering issues of integration, reusability, maintenance, and interoperability of autonomous e-Government systems of government departments and agencies. Therefore, appropriate methodologies that consistently address the aforementioned engineering issues throughout clearly defined e-Government development phases are needed. This chapter provides the design and specification, of a framework that amalgamates features from maturity models, software engineering and Semantic Web domains for semantic-enabled development of e-Government systems. Firstly, the methods and techniques used for the planning, design, and implementation of e-Government systems worldwide are investigated; a critical analysis is carried out to identify their advantages and disadvantages, as well as their contribution towards addressing the aforementioned engineering issues. Secondly, the proposed framework is drawn and specified. Finally, support tools including a business process model, an alignment matrix of stages and phases of development, and a weighting matrix of the intensity of semantic activities at various phases of development is drawn and described.

scholarly journals Review and performance evaluation of FIFO, PQ, CQ, FQ, and WFQ algorithms in multimedia wireless sensor networks

2020 ◽  
Vol 16 (6) ◽  
pp. 155014772091323
Author(s):  
Hani Attar ◽  
Mohammad R Khosravi ◽  
Shmatkov Sergiy Igorovich ◽  
Kuchuk Nina Georgievan ◽  
Mohammad Alhihi
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Process Model ◽  
Real Data ◽  
Priority Queue ◽  
Wireless Sensor ◽  
Outcome Analysis ◽  
Advantages And Disadvantages ◽  
And Performance ◽  
First In First Out

The best service mechanism in multimedia wireless sensor networks can be achieved based on the multimedia traffic flow by developing a proper simulation algorithm process model, to be a trustable indication for real implementations, which is proposed in this article, together with the algorithm model outcome analysis. The quality estimation of the proposed mechanism is investigated by simulating real data transmission and obtaining the integral criterion of the processed mechanism, to determine the queue formation and loading control. Accordingly, it was proved that the first-in first-out algorithm is not useful as a flow algorithm; however, it is regarded as suitable to be considered as the benchmark algorithm when compared with the other algorithms such as priority queue, custom queue, fair queuing, and weighted fair queuing algorithms. Finally, each algorithm’s advantages and disadvantages were verified and the best usage conditions according to certain parameters, such as packet loss probability, average time delay, and jitter, were declared.

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