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Article
Publication date: 1 January 2006

Andrey B. Andreev and Todor D. Todorov

To study and to analyze a second order finite‐element boundary‐flux approximation using isoparametric numerical integration.

Abstract

Purpose

To study and to analyze a second order finite‐element boundary‐flux approximation using isoparametric numerical integration.

Design/methodology/approach

The numerical finite‐element integration is the main method used in this research. Since a domain with curved boundary is considered we apply an isoparametric approach. The lumped flux formulation is another method of approach in this paper.

Findings

This research study presents a careful analysis of the combined effect of the numerical integration and isoparametric FEM on the boundary‐flux error. Some L2‐norm estimates are proved for the approximate solutions of the problem under consideration.

Research limitations/implications

The authors offer a general study within the framework of the boundary‐flux approximation theory, which completes the results of published works in this scientific field of research.

Practical implications

A useful application is to employ appropriate quadrature formulae without violating the precision of the boundary‐flux FEM. The lumped mass approximation is also an important practical approach to the problem in question.

Originality/value

The paper presents an entire investigation in FE boundary‐flux approximation theory, in particular, elements of arbitrary degree and domains with curved boundaries. The work is addressed to the possible related fields of interest of postgraduate students and specialists in fluid mechanics and numerical analysis.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 16 no. 1
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 15 June 2020

Andrey G. Paulish, Anatoly V. Gusachenko, Alexander O. Morozov, Vladimir A. Golyashov, Kirill V. Dorozhkin and Valentin I. Suslyaev

The purpose of this paper is to study the spectral sensitivity characteristics of new pyroelectric sensor based on tetraaminodiphenyl film within the wavelength range of 0.4-10 µm…

Abstract

Purpose

The purpose of this paper is to study the spectral sensitivity characteristics of new pyroelectric sensor based on tetraaminodiphenyl film within the wavelength range of 0.4-10 µm and 300-3,000 µm.

Design/methodology/approach

Mylar film with the thickness of about 70 µm was used as the input window. The MDR-41 monochromator-based spectrometric complex and the quasi-optical spectrometer with the set of backward-wave oscillators were used for measurements of the pyrodetector spectral characteristics within the 0.4-10 µm and 300-3,000 µm ranges, respectively.

Findings

Mylar was found to have absorption lines within the range of 0.4-10 µm, which must be taken into account when broadband detectors developing. The noise equivalent power in the visible and infrared ranges was less than 6 × 10–10 W/Hz1/2, which is about five times lower than for analogue ones. In the sub-THz range, the pyrodetector sensitivity is 2-8 times higher than the Golay cell. The sensitivity of such pyrodetector weakly depends on the wavelength in the total measured range.

Practical implications

The pyroelectric sensor has good prospects for use in super wide spectral range, from ultraviolet to millimeter radiation, in spectrometers for scientific research, in industry for the operational control of THz radiation sources, as well as in security THz-systems.

Originality/value

The spectral sensitivity characteristics of the pyroelectric photosensor based on TADPh in the visible, infrared and terahertz ranges were measured. The prospects for the use of such sensors were determined.

Details

Sensor Review, vol. 40 no. 3
Type: Research Article
ISSN: 0260-2288

Keywords

Case study
Publication date: 22 June 2018

Andrey Shapenko, Vladimir Korovkin and Benoit Leleux

Entrepreneurship, Innovation Management, Bringing Technology to Market, International Growth Strategy from Emerging Markets, Russia, B2B Marketing.

Abstract

Subject area

Entrepreneurship, Innovation Management, Bringing Technology to Market, International Growth Strategy from Emerging Markets, Russia, B2B Marketing.

Study level/applicability

MBA and executive education programs, technology management programs and electives.

Case overview

The case investigates the 20-years growth story of ABBYY, one of the most successful Russian technological companies in a global market. It covers the company’s roots, development of unique technology, evolution of products, market development and globalization and discusses a strategic threat from Google Translate to the company’s sustainable position and its business model.

Expected learning outcomes

The expected learning outcome is to discuss the key issues associated with establishing, growing and globalizing technology-driven business in an emerging market: bringing technology to market, defining customer value proposition, entering overseas markets from Russia, building partnerships, developing organizational structure to fit growth, financing rapid growth and solving “Innovator’s Dilemma”.

Supplementary materials

Teaching Notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.

Subject code

CSS 3: Entrepreneurship.

Details

Emerald Emerging Markets Case Studies, vol. 8 no. 2
Type: Case Study
ISSN: 2045-0621

Keywords

Article
Publication date: 4 November 2013

Julia Zinkina, Andrey Korotayev and Aleksey I. Andreev

The purpose of this paper is to encourage discussions regarding the existing approaches to globalization measurement (taking mainly the form of indices and rankings) and their…

3113

Abstract

Purpose

The purpose of this paper is to encourage discussions regarding the existing approaches to globalization measurement (taking mainly the form of indices and rankings) and their shortcomings in terms of applicability to developing Global Studies curricula. Another aim is to propose an outline for the globalization measurement methodology that would take a systemic approach to revealing the global flows (both their direction and content) and networks, which will allow the multidimensionality in globalization measurement crucial for proposing and verifying formal explanations and hypotheses, as well as for developing globalization forecasts.

Design/methodology/approach

Several methodologies for globalization measurements are compared in the paper, among the most important are variations of the index compilation methodology, and methods of network analysis.

Findings

For Global Studies curricula, globalization measurement tools much more complex than indices are needed. A possible solution could lie in the analysis of country-to-country flows (and networks which these flows form), which appears much more data- and effort-consuming than the methodologies behind the index compilation, will allow the elaboration of a systemic vision of globalization and the interactions between its various aspects, which should necessarily underlie the Global Studies curricula.

Research limitations/implications

The research concentrates upon the most widespread approaches to globalization measurements, such as the most widely recognized globalization indices, and the few attempts at country-to-country flows and networks measurement.

Originality/value

The paper's originality/value lies in proposing an outline for a new multidimensional approach to measuring globalization based upon country-to-country flows and networks.

Article
Publication date: 11 August 2014

Andrey Korotayev and Julia Zinkina

The aim of this paper is to investigate whether the structure of the international migration system has remained stable through the recent turbulent changes in the world system…

Abstract

Purpose

The aim of this paper is to investigate whether the structure of the international migration system has remained stable through the recent turbulent changes in the world system.

Design/methodology/approach

The methodology draws on the social network analysis framework – but with some noteworthy limitations stipulated by the specifics of data.

Findings

The list of the most central nodes demonstrates remarkable stability over time, with the USA consistently occupying the first place and Russia and Germany stably entering the top-five (or even top-three ever since 1990). Centrality analysis also clearly demonstrates the emergence (in the 1970s) and development of the Gulf countries (particularly Saudi Arabia and UAE) as major migration destinations.

Research limitations/implications

The results of the analysis present a mixture of evidence to support both the principles of the neoclassical migration theory, and some of its critiques, as the migration patterns are strongly influenced by historical links (such as colonial ties), geographical distance, cultural distance, etc. Defining the scope of influence of each of these factors lies beyond the scale of this paper. However, further application of social network analysis to studying the global migration network, in the authors ' opinion, has quite remarkable potential for contributing to this line of research.

Originality/value

The paper views the specific features in the structure of the global migration network and their implications for world system studies.

Details

Journal for Multicultural Education, vol. 8 no. 3
Type: Research Article
ISSN: 2053-535X

Keywords

Article
Publication date: 17 September 2019

Meenu Chopra and Vikas Gupta

The purpose of this study is to develop a decomposed model to inspect the effect of knowledge management practices (knowledge sharing culture [KSC], knowledge-based human resource…

Abstract

Purpose

The purpose of this study is to develop a decomposed model to inspect the effect of knowledge management practices (knowledge sharing culture [KSC], knowledge-based human resource management [KHRM], strategy and leadership [S&L], information and communication technology [ICT] on organizational performance [OP]) by using the four balanced scorecard outcomes (BSC) (learning and growth [L&G], internal process [IP] perspective, customer satisfaction [CS] perspective and financial performance [FP]).

Design/methodology/approach

The research methodology included development of a research model based on comprehensive literature review followed by survey of knowledge-intensive organizations. A sample of 277 employees was obtained and structured equation modeling analysis using SPSS AMOS was conducted to test the proposed hypotheses.

Findings

The study shows that KSC and KHRM have a highly significant effect on all the four aspects of OP; S&L positively and significantly affects only L&G and IP but does not have any significant effect on the other two, i.e. CS and FP, while ICT practices did not affect any of the measures significantly.

Research limitations/implications

The data are limited to 277 middle and senior level managers of Indian firms, which may be a limiting factor for generalizability.

Originality/value

The proposed model uncovers the dynamics of individual relationships between KM practices and measures of performance (proposed by BSC) in comparison to existing models which have mainly focused on the overall effect.

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