Generation of Patterns From Concentric Ring Arrays With Dipoles and Waveguides

Author(s):  
Ketavath Kumar Naik

Radiation patterns are produced from concentric ring arrays by using practical elements, such as dipoles and waveguides which is presented in this article. Ring arrays, which produces high sidelobes, create electromagnetic interference (EMI) problems. To overcome this problem, analysis and synthesis is carried out and generates the directional patterns of concentric ring arrays using practical radiators. The directivity is observed for concentric dipole ring arrays and concentric waveguide ring arrays is 72.21 dB. The comparative data is presented in the result.

2018 ◽  
Vol 26 (1) ◽  
pp. 41-53 ◽  
Author(s):  
Manuel Aprile ◽  
Natalia Castro ◽  
Graciela Ferreira ◽  
Juan Piccini ◽  
Franco Robledo ◽  
...  

Author(s):  
A. Pechenyuk

The subject of the research is tourist orientation as a component of the business paradigm of development of territorial communities of Ukraine The purpose of the study is to substantiate the theoretical foundations and criteria for the formation of a new business paradigm of tourism orientation of rural communities. General scientific and special research methods are used. Scientific method - for systematization of existing theoretical approaches to the researched problem; analysis and synthesis (for detailing the object and subject of research and their generalization); abstract-logical (in the formation of generalizations, conclusions and proposals; the method of systematic approach - in considering tourist orientation as a system consisting of a number of interconnected elements, and, interacting, affects the communication and social efficiency of rural communities; the method of scientific abstraction - when allocating stable, typical connections in tourism orientation, which allowed to form criteria for assessing the tourist orientation of communities. Tourist orientation as a direction of formation of business paradigm of development of united communities is investigated. It is established that the strengthening of the tourism-oriented component will contribute to the creation of an innovative tourism product and attract new consumers. The main approaches to customer orientation are studied, the connection between the defined definition and tourist orientation is established. The own definition of tourist orientation of communities is offered. The stages of formation of a positive tourist-oriented environment are outlined. The principles of tourist orientation are described, cognitive marketing is defined as the basis for the formation of consumer loyalty. The criteria of tourist orientation are given and the indicators that characterize it are determined. The results of the study can be used to develop an effective strategy for rural development, taking into account and evaluating the criteria identified by the study at the stage of forming a business paradigm of tourism orientation of the community will increase investment in infrastructure, dissemination of information technology, restoration, reconstruction, objects of historical and cultural heritage, the formation of information, cognitive and tourist competencies of community residents. Key words: united communities, tourism orientation, tourism development, business paradigm, tourist impressions, cognitive marketing.


Author(s):  
Evgeniy N. Smirnov

The world economy recovers from global financial crisis slowly and unevenly that calls a question about efficiency and advantage of economic globalization for the countries of the world. Developing countries recovered from global financial crisis of 2008–2009 comparative quickly, and it was promoted in many respects by the high prices of raw materials and low levels of debt of these countries. NowChinatakes leader positions in the international capital flow and world trade. Globalization had significant effect on scales of the involvement of the country into world economic communications that became one of the reasons of overheating of national economy. The economy ofChina, besides the increasing overheating potential, begins to be under pressure from the trade conflict initiated by theUSA. In these conditions problems of structural reforming ofChina’ economy, on that depend competitive positions of the country in the world economy depend, become aggravated. In modern Sinology, the problems of trade conflicts between countries are studied very fragmentally. Approaches of the author are based on the results previously obtained by Russian scientists Y. M. Galenovich, A. P. Mozias, M. L. Titarenko, and theoretical developments of leading research centers. Historical approach, comparative, system analysis and synthesis, prognostic and problem analysis were used as instrumental scientific methods in the research presented in the article. The author's ideas are based on the hypothesis of the relationship of «overheating», appearing in the economies with the growth of economic contradictions and conflicts between them.


2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Krisna Yetti ◽  
Roro Tutik Sri Hariyati ◽  
Rona Cahyantari Merduati

Background: Someone who will die should be supported and accompanied spiritually for passing their end of life. The spiritual involvement is needed a convenient place since its support will transform a frightening moment to be a peaceful one. Purpose: the aim of the study was describes the convenient place to die peacefully using philosophical approach.Methods: This study used method of Actual Problem, it is a philosophy reflective study about the assumption of researcher that a patient with terminal illness wants to be accompanied by people who proper to deliver the prayers. In this study, problems in the place of die are directly exposed, then it is synthesized to solve a fundamental problem. Analysis and synthesis of unsatisfied place to die to be expected can solve the problem. Results: Hospice care is a program or facility which gives specific care for the patient in end of life. It can be said that hospice is a way of care based on philosophy about the end of life. Hospice can be a convenient place to die because there are its staff who will substitute the role of family, in case they experience physical and emotional burden. Conclusion: Hospice can be an alternative of convenient place for patient with dying process and its nursing care can make the process as peaceful as possible Keywords:Convenient Place, Dying Process, Hospice, Peaceful, Terminal illness 


Author(s):  
S. V. Kuzmin ◽  
K. O. Korovin ◽  
T. R. Raimzhanov

Introduction. Modern radar and communications systems contain phased array antennas. One of the synthesis problems of such systems is the formulation of requirements for components, modules and units which are comprised in it. To solve this problem, one needs to build a coverage area and to analyze an impact of characteristics of its parts. The quality of analysis and synthesis of such complex systems can be enhanced by use of interactive data visualization, which requires a fairly quick calculation of characteristics.Aim. Development of an interactive application for increasing the synthesis capabilities of communication systems containing antenna arrays and for improving the characteristics of systems of interest.Materials and methods. To accelerate the calculation of radiation patterns, the antenna array pattern in a form suitable for the fast Fourier transform algorithm was used. To find the required amplitude-phase distributions, Kotelnikov series expansion and genetic algorithm were used.Results. In the developed application, amplitude-phase distribution, directivity pattern of a linear equidistant array and coverage area were displayed. An interactive change of the amplitude-phase distribution at radiation elements and synthesized radiation patterns in given directions were possible. With introduction of changes to the radiation pattern, the amplitude-phase distribution and the array radiation pattern itself changed in directions other than the specified one. The coverage area was rebuilt when any of the characteristics changes. If necessary, the coverage area display could be turned off. The paper provides an example of using the application in the synthesis of a communication system with an aircraft.Conclusion. The use of the developed application allows one to extend the capabilities and significantly reduce the analysis and synthesis time of the communication secondary radar systems with antenna arrays too. Besides, the application is used for training specialists for industry enterprises.


Sign in / Sign up

Export Citation Format

Share Document