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Article
Publication date: 1 March 1991

A.I. ADAMSONE and B.S. POLSKY

A half‐implicit absolutely stable method for 3D simulation of the transient processes in semiconductor devices is proposed. The calculations of transient processes in bipolar…

59

Abstract

A half‐implicit absolutely stable method for 3D simulation of the transient processes in semiconductor devices is proposed. The calculations of transient processes in bipolar transistor were carried out and were compared with the results of 2D simulation.

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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 10 no. 3
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 1 February 1992

E.D. LYUMKIS, B.S. POLSKY, A.I. SHUR and P. VISOCKY

An efficient numerical method for the solution of hot‐carrier transport equations describing transient processes in submicrometer semiconductor devices is proposed. The…

178

Abstract

An efficient numerical method for the solution of hot‐carrier transport equations describing transient processes in submicrometer semiconductor devices is proposed. The calculations of transient processes in submicrometer MOS transistor were carried out and compared with the results obtained by conventional drift‐diffusion model.

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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 11 no. 2
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 1 April 1993

Y. Apanovich, E. Lyumkis, B. Polsky, A. Shur and P. Blakey

The use of energy balance and simplified hydrodynamic models for simulating GaAs devices is investigated. The simplified hydrodynamic model predicts velocity spikes that are not…

72

Abstract

The use of energy balance and simplified hydrodynamic models for simulating GaAs devices is investigated. The simplified hydrodynamic model predicts velocity spikes that are not present in more detailed Monte Carlo simulation results. These velocity spikes are associated with overestimation of thermal diffusion. The simplified hydrodynamic model can predict terminal currents that are significantly lower than those predicted by the energy balance model. The differences between the models are significantly greater than those observed previously for silicon devices. The main conclusion of this study is that the energy balance model is preferable to the simplified hydrodynamic model as the basis for GaAs device simulation, but the energy balance model still needs refinement to improve the agreement with more general simulation and experimental results.

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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 12 no. 4
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 1 April 1993

Y. Apanovich, R. Cottle, B. Freydin, E. Lyumkis, B. Polsky, A. Tchernaiev and P. Blakey

Self‐consistent electrothermal simulation of modern semiconductor devices is required for the accurate and efficient design and optimization of many semiconductor devices. The…

36

Abstract

Self‐consistent electrothermal simulation of modern semiconductor devices is required for the accurate and efficient design and optimization of many semiconductor devices. The need to perform this type analysis in order to predict the behavior of power devices was realized many years ago. It is now clear that nonisothermal analysis can be very important for VLSI devices as well.

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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 12 no. 4
Type: Research Article
ISSN: 0332-1649

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Book part
Publication date: 11 December 2023

Piero Dominici

The ongoing anthropological transformation urges the rethinking of education, underlining the inadequacy of our schools and universities in dealing with hypercomplexity, that is…

Abstract

The ongoing anthropological transformation urges the rethinking of education, underlining the inadequacy of our schools and universities in dealing with hypercomplexity, that is, with the global extension of all political, social, and cultural processes and with their indeterminacy, interdependence, and interconnection. The idea that educational processes are questions of a purely technical/technological nature, solely a problem of skills and know-how, is the “great mistake” of the hypertechnological society, based on the illusion of being able to measure and quantify everything, to eliminate error and unpredictability, and to achieve total control and rationality. It is necessary to rethink education radically because the extraordinary scientific discoveries and the dynamics of the new technologies have completely overturned the complex interaction between biological and cultural evolution, doing away with the borders between the natural and the artificial. Emergence and emergency themselves are structural features of complex systems (living, social, and human systems), rendered hypercomplex through today’s acceleration and virality, regarding not only education and socialization but also the representations and perceptions of all systemic processes. The merging of fields of knowledge and an epistemology of error become essential for the analysis and interpretation of this hypercomplexity and the unpredictability that distinguishes it.

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Higher Education in Emergencies: Best Practices and Benchmarking
Type: Book
ISBN: 978-1-80117-379-7

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Article
Publication date: 1 February 1984

W. JÜNGLING, E. GUERRERO and S. SELBERHERR

We discuss three models describing the carrier densities in highly doped silicon, which have been used for process and device simulation. We calculate nie for each of the models…

45

Abstract

We discuss three models describing the carrier densities in highly doped silicon, which have been used for process and device simulation. We calculate nie for each of the models for various doping concentrations within temperature ranges interesting for the device and process simulation. We try to explain the behaviour of nie for high compensation and compare our calculated results to measured values of nie. We offer simple formulae for the calculated nie and show how far the relations between the carrier densities and the Fermi levels can be described by the simple formulae of Boltzmann statistics when we use a doping dependent effective intrinsic number.

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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 3 no. 2
Type: Research Article
ISSN: 0332-1649

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Book part
Publication date: 27 June 2023

Raunak Pahwa, Sapna Arora and Samandeep Kaur

Purpose: Consumer acceptance is considered the most important factor in functional food success and is given top priority in new product development. This study focussed on…

Abstract

Purpose: Consumer acceptance is considered the most important factor in functional food success and is given top priority in new product development. This study focussed on finding factors that influence consumer perceptions about active food and the pattern of active food consumption. This chapter aims to provide a deeper understanding of taste trading based on a consumer decision-making framework.

Research Methodology: Cross-sectional consumer data were collected by floating G-Doc containing the questionnaire which was supposed to be answered by people according to their behaviours, preferences, knowledge regarding functional foods etc. It contained questions about their income, gender, preference towards functional foods, factors affecting decision-making while purchasing functional foods etc.

Results of the Study: The findings suggest that the consumers' attitude towards functional foods was mainly influenced by the quality and suitability of the product. Purchase intent was found based on age, literacy of population, income and health benefits of active foods. Awareness of functional foods and their price significantly affected the purchase of functional foods. Most people were willing to spend more on functional foods in the future regardless of the taste and provided high quality and product suitability.

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Technology, Management and Business
Type: Book
ISBN: 978-1-80455-519-4

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Article
Publication date: 30 September 2013

Namrata Bhattacharya, Jessica Lamond, David Proverbs and Felix Hammond

The purpose of the research is to develop a conceptual framework to anticipate the vulnerability of value of commercial properties towards changing risk of flooding. The existing…

738

Abstract

Purpose

The purpose of the research is to develop a conceptual framework to anticipate the vulnerability of value of commercial properties towards changing risk of flooding. The existing patterns, themes, and issues associated with property value and their vulnerability towards flooding were identified and used to inform the development of the conceptual model.

Design/ methodology/approach

Literature review is performed to identify the factors affecting vulnerability of commercial property values to the impact of flood risk in the UK. The review approach was based on related literature contributing to identified themes and sub-themes. The extant literature is summarized into two distinct themes of “vulnerability” and “value” contributing to changing risk of flooding. The synthesised literature is then utilized in developing the conceptual map which further paved the way towards designing the conceptual framework.

Findings

The generic conceptual framework presented explores the interaction between different internal and external influencing factors affecting the vulnerability of value of commercial property system. The framework highlighted the importance of space and time within the system. An extensive review of previous studies in both the residential and commercial sectors for different disaster studies reveals that the main research challenge in assessing the vulnerability of property values are the intensive data requirements. The need for data is considered to be the main restrictive factor resulting in lack of empirical studies in this field.

Originality/value

This study brings together two existing research domains of flood vulnerability and property value. Practitioners and researchers will find this study useful in developing an improved understanding of the vulnerability of commercial properties to flooding. The conceptual framework is an important outcome of the research which will encourage further research in this considerably neglected field.

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International Journal of Disaster Resilience in the Built Environment, vol. 4 no. 3
Type: Research Article
ISSN: 1759-5908

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Article
Publication date: 1 April 1991

Sasa Sokolić, Slavko Amon, Franc Smole and Dejan Krizaj

A general algorithm for analysis of semiconductors with arbitrary models for heavy doping phenomena is presented. Different models, theoretical as well as empirical, were applied…

28

Abstract

A general algorithm for analysis of semiconductors with arbitrary models for heavy doping phenomena is presented. Different models, theoretical as well as empirical, were applied, and minority carrier concentration in the uncompensated n‐type silicon was analyzed. Recalculated into the term of apparent BGN, the results were compared with experimental data. Further analysis of apparent BGN indicated the weakness of empirical formulae for apparent BGN. Assumption of total ionization of impurities considered in the analysis is discussed and justified.

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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 10 no. 4
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 1 March 1994

R. VANKEMMEL, W. SCHOENMAKER and K. DE MEYER

This paper presents a new discretization technique of the hydrodynamic energy balance model based on a finite‐element formulation. The concept of heat source lumping is…

45

Abstract

This paper presents a new discretization technique of the hydrodynamic energy balance model based on a finite‐element formulation. The concept of heat source lumping is introduced, and the thermal conductivity model includes the effect of varying both carrier concentrations and temperatures. The energy balance equation is formulated to account for kinetic energy as a convective flow. The new discretization method has the advantage that it allows for assembling the functions out of elementary variables available over elements instead of along element links. Therefore, theoretically, calculation of the Jacobian should be three times faster than by the classic method. Results are given for three examples. The method suffers from mathematical instabilities, but provides a good basis for future work to solve these problems.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 13 no. 3
Type: Research Article
ISSN: 0332-1649

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