Selection of technological solutions within the framework of the development of the methodology of analytical design of antenna-feeder systems of special radio communication

2021 ◽  
Author(s):  
K.V. Kotkov ◽  
M.A. Minkin ◽  
M.I. Naryshkin ◽  
N.A. Nosov
Keyword(s):  
Design System ◽  
Radio Communication ◽  
Analytical Design ◽  
Parametric Sensitivity ◽  
Complex Models ◽  
Typical Composition ◽  
Further Development ◽  
Selection Of

The article is devoted to the substantiation of the directions of further development of the methodology of analytical design of antenna-feeder devices and systems in order to ensure the development of not only technical and design, but also technological solutions within the framework of a single design system. The analysis of the logic of the development of the methodology of analytical design of antenna-feeder systems allowed us to justify the relevance of the task of further improving this methodology by including technological solutions in the consideration. The nomenclature of materials and technologies used in the production of antenna-feeder systems, as well as the methodology of their design based on complex models, are considered. The typical composition of the antenna-feeder system and its decomposition are analyzed. The possibilities of estimating the influence of technological tolerances based on the use of the parametric sensitivity apparatus are investigated. The prospects for the development of methods for selecting technological solutions are justified and priority tasks in this direction are formulated. The proposed approach and justified priorities should form the basis for further research on the development of the methodology for analytical design of antenna-feeder systems.

CRITERIONS FOR THE EFFECTIVENESS OF SOCIALLY IMPORTANT INVESTMENT PROJECTS AND THEIR FORMULAS ADOPTED IN RUSSIAN PRACTICE

2020 ◽  
Vol 2 (8) ◽  
pp. 58-64
Author(s):  
A. F. AGEEVA ◽  
Keyword(s):  
Performance Indicators ◽  
Payback Period ◽  
Internal Rate Of Return ◽  
Investment Projects ◽  
Regulatory Documents ◽  
Project Analysis ◽  
Analytical Work ◽  
Methodological Approaches ◽  
Further Development ◽  
Selection Of

The article analyzes domestic guidelines for assessing the effectiveness of investment projects reflected in the regulatory documentation, both current and invalid. Considered are methodological approaches to calculating key performance indicators of investment projects - net discounted income, internal rate of return, discounted payback period and profitability index. The results of the analysis and recommendations for the further development of national regulatory documents for project analysis and methodological approaches to assessing the effectiveness of socially significant investment projects are presented. The results of the analytical work presented in the article are planned to be used to create a methodology for the selection of socially significant projects for the provision of state support.

scholarly journals An Analytical Approach for the Selection of Technologies to be Integrated in a Plug&play Façade Unit: The RenoZEB Case Study

Proceedings ◽  
2021 ◽  
Vol 65 (1) ◽  
pp. 29
Author(s):  
Alessandro Pracucci ◽  
Sara Magnani ◽  
Laura Vandi ◽  
Oscar Casadei ◽  
Amaia Uriarte ◽  
...  
Keyword(s):  
Building Envelope ◽  
Design System ◽  
Decision Matrix ◽  
Design Guideline ◽  
Existing Building ◽  
Building Conditions ◽  
Zero Energy Building ◽  
System A ◽  
Selection Of

The nearly Zero Energy building (nZEB) renovation market is currently the key feature in the construction sector. RenoZEB aims to develop a systematic approach for retrofitting by assembling different technologies in a plug and play building envelope. This paper presents the methodology used to transform the RenoZEB concept in the design system. A multi-criteria decision matrix is used for the selection of the best façade technologies within the market while the analysis of the existing building conditions allows to develop a replicable approach for designing deep retrofitting intervention through a plug&play façade. The methodology appears to be a valuable support for the selection of technologies and allows to define a design guideline for the envelope.

scholarly journals Development of a Colorimetric Sensor for Autonomous, Networked, Real-Time Application

Sensors ◽  
2020 ◽  
Vol 20 (20) ◽  
pp. 5857
Author(s):  
Brandy J. Johnson ◽  
Anthony P. Malanoski ◽  
Jeffrey S. Erickson
Keyword(s):  
Real Time ◽  
Field Trials ◽  
Wireless Sensor ◽  
Broad Area ◽  
Ongoing Effort ◽  
Environmental Air ◽  
Further Development ◽  
Real Time Application ◽  
Selection Of ◽  
Event Occurrence

This review describes an ongoing effort intended to develop wireless sensor networks for real-time monitoring of airborne targets across a broad area. The goal is to apply the spectrophotometric characteristics of porphyrins and metalloporphyrins in a colorimetric array for detection and discrimination of changes in the chemical composition of environmental air samples. The work includes hardware, software, and firmware design as well as development of algorithms for identification of event occurrence and discrimination of targets. Here, we describe the prototype devices and algorithms related to this effort as well as work directed at selection of indicator arrays for use with the system. Finally, we review the field trials completed with the prototype devices and discuss the outlook for further development.

scholarly journals Interrogating the Founding Gestures of the New Materialism

2016 ◽  
Vol 22 (2) ◽  
Author(s):  
Dennis Bruining
Keyword(s):  
New Materialism ◽  
The Past ◽  
The World ◽  
Further Development ◽  
Selection Of ◽  
The Way

In this article, I aim to further thinking in the broadly ‘new materialist’ field by insisting it attends to some ubiquitous assumptions. More specifically, I critically interrogate what Sara Ahmed has termed ‘the founding gestures of the “new materialism”’. These founding rhetorical gestures revolve around a perceived neglect of the matter of materiality in ‘postmodernism’ and ‘poststructuralism’ and are meant to pave the way for new materialism’s own conception of matter-in/of-the-world. I argue in this article that an engagement with the postmodern critique of language as constitutive, as well as the poststructuralist critique of pure self-presence, does not warrant these founding gestures to be so uncritically rehearsed. Moreover, I demonstrate that texts which rely on these gestures, or at least the ones I discuss in this article, are not only founded on a misrepresentation of postmodern and poststructuralist thought, but are also guilty of repeating the perceived mistakes of which they are critical, such as upholding the language/matter dichotomy. I discuss a small selection of texts that make use of those popular rhetorical gestures to juxtapose the past that is invoked with a more nuanced reading of that past. My contention is that if ‘the founding gestures of the “new materialism”’ are not addressed, the complexity of the postmodern and poststructuralist positions continues to be obscured, with damaging consequences for the further development of the emerging field of new materialism, as well as our understanding of cultural theory’s past.

Optoelectronic generation of transient waveforms for UWB radars with rejected frequencies

2020 ◽  
Vol 12 (7) ◽  
pp. 543-550
Author(s):  
Jeremy Hyvernaud ◽  
Gwenael Reineix ◽  
Romain Negrier ◽  
Joel Andrieu ◽  
Michele Lalande ◽  
...  
Keyword(s):  
Experimental Tests ◽  
Design System ◽  
System Software ◽  
Optoelectronic System ◽  
Short Pulses ◽  
Semiconductor Switches ◽  
Number Of Generators ◽  
Set Up ◽  
Switching Mode ◽  
Selection Of

AbstractIn this paper, a new design of an optoelectronic system for transient waveforms shaping, with a selection of rejected frequencies, is presented. The generation of short pulses is performed with several optoelectronic generators using photoconductive semiconductor switches (PCSS) operating in linear switching mode and triggered via a laser pulse. With the appropriate number of generators, the system generates a spectrum ranging from 300 MHz to 3 GHz, with rejected frequencies at 900 MHz and 1.8 GHz. A PCSS characterization has been set up to determine the necessary parameters for the establishment of an optoelectronic generator model on Keysight Advanced Design System software (ADS). Experimental tests have been realized using measurement benches to compare the simulated and measured signals.

scholarly journals Design and manufacture of artificial organs made of polymers

2019 ◽  
Vol 254 ◽  
pp. 06006 ◽  
Author(s):  
Marek Macko ◽  
Zbigniew Szczepański ◽  
Dariusz Mikołajewski ◽  
Joanna Nowak ◽  
Emilia Mikołajewska ◽  
...  
Keyword(s):  
Clinical Practice ◽  
3D Printing ◽  
New Technologies ◽  
Medical Training ◽  
Artificial Organs ◽  
Medical Applications ◽  
Surgical Operation ◽  
Design And Manufacture ◽  
Further Development ◽  
Selection Of

New technologies such as 3D printing and reverse engineering are becoming increasingly popular, including in medical applications. The paper presents possible ways to use 3D printing in the area of increasing the level of medical training specialists in their daily clinical practice and in the selection of the appropriate scenario before a real surgical operation. Descriptions of the projects carried out with the surgeons aimed at achieving the aforementioned goals were presented. The presented concepts are relatively new solutions, but their further development may lead to the extension of the field of application of these techniques in medicine, among others in relation to other specialties.

An Exploratory Study of the Discovery and Selection of Design Methods in Practice

2016 ◽  
Vol 138 (10) ◽  
Author(s):  
Kilian Gericke ◽  
Julia Kramer ◽  
Celeste Roschuni
Keyword(s):  
Communities Of Practice ◽  
Professional Practice ◽  
Exploratory Study ◽  
Design Methods ◽  
Web Based ◽  
New Methods ◽  
Potential Link ◽  
The Rich ◽  
Further Development ◽  
Selection Of

This work seeks to understand how design practitioners discover, select, and adapt design methods and methodologies. Design methods and methodologies are mainly used for educational purposes and are not formally transferred into design practice and industry. This prevents design practitioners from accessing the rich body of research and knowledge posed by academia. Various web platforms and textbooks allow users to discover or search for design methods, but little support is provided to assess whether or not a method is appropriate for the context or the task at hand. In this exploratory study, interviews were conducted with practicing engineers and designers. Interview responses were coded and analyzed in an effort to understand the patterns in searching, selecting, assessing, and exchanging experiences with peers in professional practice. This analysis showed that interviewees would like to search for design methods based on their desired outcomes. Additionally, interviewees considered their personal contacts to be the most valuable source of new methods. These insights show that web-based communities of practice may be a potential link between academia and industry, but existing web repositories and communities require further development in order to better meet the needs of the design practitioner community.

Optimal Design of Sandwich Beam With Frequency Constraints

2007 ◽  
Author(s):  
Vladimir B. Gantovnik ◽  
Alexander V. Lopatin ◽  
Lubov V. Shumkova
Keyword(s):  
Equations Of Motion ◽  
Sandwich Beam ◽  
Vibrational Analysis ◽  
Optimal Parameters ◽  
One Dimensional ◽  
Sandwich Plates And Shells ◽  
Complex Models ◽  
Plates And Shells ◽  
Transversal Vibrations ◽  
Selection Of

In this paper, we analyze selection of optimal parameters of sandwich beam in the presence of constraints on the frequencies of the transversal vibrations. The employed equations of motion take into account the transverse shear deformations in the core and rotatory inertia of the beam cross-section. The expressions for the transversal vibrations are obtained. The results show that one-dimensional model of the sandwich beam can be used for preliminary vibrational analysis of more complex models of sandwich plates and shells.

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