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Article
Publication date: 1 March 1988

G.B. Parravicini, G. Samoggia, B. Morten and M. Prudenziati

A weak change of resistivity caused by visible radiation both for commercial and for model thick‐film (cermet) resistors (TFRs) has been observed and studied in the temperature…

20

Abstract

A weak change of resistivity caused by visible radiation both for commercial and for model thick‐film (cermet) resistors (TFRs) has been observed and studied in the temperature range 10–380 K. A possible origin of this photoelectric effect in terms of photoexcited electrons emitted from the metallic grain surface into the glassy region is discussed.

Details

Microelectronics International, vol. 5 no. 3
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 1 September 2005

P. Di Barba, E.R. Mognaschi, M.E. Mognaschi and A. Savini

The purpose of the paper is to define a methodology for identifying the electric conductivity and permittivity of lossy dielectric materials employed in a class of small…

447

Abstract

Purpose

The purpose of the paper is to define a methodology for identifying the electric conductivity and permittivity of lossy dielectric materials employed in a class of small dielectric motors, knowing the motor torque. Reference is made to data measured on an existing prototype.

Design/methodology/approach

The motor operates because of the interaction between a rotating electric field, generated by a three‐phase system of electrodes, and the charge density induced at the surface of the rotor, which lags with respect to the field. The stator and the rotor are hollow cylinders made of dielectric materials. A finite‐element model of the motor has been developed. For a given set of material properties, the time‐averaged value of starting torque acting on the rotor is evaluated by means of the Maxwell stress tensor.

Findings

A family of curves of starting torque vs conductivity for different values of rotor permittivity are obtained. Each curve is well approximated by a Lorentz distribution.

Originality/value

A field model of the motor was exploited to estimate the conductivity that gives rise to a prescribed value of the starting torque. The solution of the underlying inverse problem, which is ill‐posed, can give an helpful insight for maximizing the torque.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 24 no. 3
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 10 September 2024

Carla Del Gesso, Paola Parravicini and Renato Ruffini

Intellectual capital (IC) is an increasingly important strategic asset for sustainable value creation in organisations. This paper aims to provide a conceptual perspective on the…

88

Abstract

Purpose

Intellectual capital (IC) is an increasingly important strategic asset for sustainable value creation in organisations. This paper aims to provide a conceptual perspective on the university’s role as a catalyst for IC creation and development within the dynamic landscape of organisations, exploring the nexus to capture its essence.

Design/methodology/approach

Adopting a conceptual framework development approach, key concepts were cohesively and coherently synthesised from various theoretical underpinnings, namely, the multiple capitals approach to maximising corporate value creation, the evolved triple bottom line approach to corporate sustainability, the triple helix innovation model and its subsequent extensions, the upper echelons theory and the social licence construct linked to stakeholder, legitimacy and institutional theories.

Findings

A comprehensive conceptual framework was developed that outlines universities’ role in catalysing four corporate IC forms crucial to sustainable organisational value creation: human capital, governance capital, social/relational capital and structural/organisational capital. The framework interprets this role of universities as dynamic IC reservoirs serving regional ecosystems for sustainable development. It highlights the synergistic sustainable value creation between universities and organisations in host communities and broader society, with university governance acting as a key driver.

Originality/value

This paper offers a theoretically grounded interpretation of universities’ pivotal role in catalysing essential forms of IC to support contemporary organisations’ sustainable value-creation processes. The proposed framework has the potential to ignite conversations on the crucial connection between universities and corporate IC development relevant to sustainable organisations, inspiring future empirical research, reflection and discussion.

Details

International Journal of Organizational Analysis, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1934-8835

Keywords

Available. Open Access. Open Access
Article
Publication date: 31 October 2023

Emilia Kääriä and Ahm Shamsuzzoha

This study is focused to support an ongoing development project of the case company's current state and the challenges of the order-to-cash (O2C) process. The O2C process is the…

3116

Abstract

Purpose

This study is focused to support an ongoing development project of the case company's current state and the challenges of the order-to-cash (O2C) process. The O2C process is the most visible process to the customer, and therefore, its punctual and fluent order management is vital. It is observed that the high degree of manual work in the O2C process causes mistakes, delays and rework in the process. The purpose of this article is therefore to analyze the case company's current state of the O2C process as well as to identify the areas of development in this process by deploying the means of Lean Six Sigma tools such as value stream mapping (VSM).

Design/methodology/approach

The study was conducted as a mix of quantitative and qualitative analysis. Based on both the quantitative and qualitative data, a workshop on VSM was organized to analyze the current state of the O2C process of a case company, engaged in the energy and environment sector in Finland.

Findings

The results found that excessive manual work was highly connected to inadequate or incorrect data in pricing and invoicing activities, which resulted in canceled invoices. Canceled invoices are visible to the customer and have a negative impact on the customer experience. This study found that by improving the performance of the O2C process activities and improving communication among the internal and external stakeholders, the whole O2C process can perform more effectively and provide better customer value.

Originality/value

The O2C process is the most visible process to the customer and therefore its punctual and fluent order management is vital. To ensure that the O2C process is operating as desired, suitable process performance metrics need to be aligned and followed. The results gathered from the case company's data, questionnaire interviews, and the VSM workshop are all highlighted in this study. The main practical and managerial implications were to understand the real-time O2C process performance, which is necessary to ensure strong performance and enhance continuous improvement of the O2C process that leads to operational excellence and commercial competitiveness of the studied case company.

Details

International Journal of Productivity and Performance Management, vol. 73 no. 11
Type: Research Article
ISSN: 1741-0401

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Article
Publication date: 3 August 2015

Reza Ansari, Mahdi Mirnezhad, Hessam Rouhi and Majid Bazdid-Vahdati

Based on the molecular mechanics approach, the purpose of this paper is to analytically investigate the torsional buckling behavior of single-walled silicon carbide nanotubes…

356

Abstract

Purpose

Based on the molecular mechanics approach, the purpose of this paper is to analytically investigate the torsional buckling behavior of single-walled silicon carbide nanotubes (SiCNTs) with different values of diameter and chiral angles.

Design/methodology/approach

To this end, the mechanical properties and atomic structure of a silicon carbide (SiC) sheet are evaluated based on the density functional theory (DFT) within the framework of the generalized gradient approximation. After that force constants of the total potential energy are theoretically obtained through establishing a linkage between the viewpoints of the quantum mechanics and molecular mechanics. Explicit expressions are presented to obtain the critical buckling shear strain corresponding to different types of chirality. The present model is capable to calculate the torsional buckling behavior of SiCNTs related to various chiral angles. The critical buckling shear strain is obtained for various types of chirality and compared with each other.

Findings

It is concluded that for all diameters, zigzag nanotubes are more stable than armchair ones. Besides it is found that the minimum critical buckling shear strain is for nanotubes with (n, n/2) chiral vector.

Originality/value

Investigating the torsional buckling behavior of single-walled SiCNTs with different values of diameter and chiral angle. Obtaining the mechanical properties and atomic structure of the SiC sheet based on the DFT calculations. Establishing a linkage between the molecular mechanics and quantum mechanics and obtaining the force constants of the molecular mechanics. Presenting the closed-form expression to calculate the critical buckling shear strain of single-walled SiCNTs corresponding to various types of chirality.

Details

Engineering Computations, vol. 32 no. 6
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 1 May 1993

Giovanni Azzone, Umberto Bertele and Cristina Masella

Evaluating investments in new product development has been a muchdebated question over the last few years. Traditional methods arerecognized as inadequate but there is no dominant…

456

Abstract

Evaluating investments in new product development has been a much debated question over the last few years. Traditional methods are recognized as inadequate but there is no dominant methodology. Presents a case study, developed at Olivetti, in which new and old methodologies have been used together to analyse and evaluate an investment project in new product development. The suggested approach supports decision making better than scoring methods, and data obtained are more reliable than those provided by traditional financial methods.

Details

Management Decision, vol. 31 no. 5
Type: Research Article
ISSN: 0025-1747

Keywords

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Article
Publication date: 27 January 2012

Céline Bérard, L. Martin Cloutier and Luc Cassivi

If the use of information technology (IT) supporting clinical trial projects offers opportunities to optimize the underlying information management process, the intricacy of the…

968

Abstract

Purpose

If the use of information technology (IT) supporting clinical trial projects offers opportunities to optimize the underlying information management process, the intricacy of the identification and evaluation of relevant IT options is generally seen as a complex task in healthcare. Hence, the purpose of this paper is to examine the problem of ex ante information system evaluation, and assess the impact of IT on the information management process underlying clinical trials.

Design/methodology/approach

Combining Unified Modeling Language (UML) and system dynamics modeling, a simulation model for evaluating IT was developed. This modeling effort relies on a case study conducted in a clinical research organization, which, at that time, faced an IT investment dilemma.

Findings

Some illustrative results of sensitivity analyzes conducted on error rates in clinical data transmission are presented. These simulation results allow for quantifying the impact of different IT options on human resources' efforts, time delays and costs of clinical trials projects. Notably, the results show that although the technology has no real influence on the duration of a clinical trial project, it impacts the number of projects that can be carried out simultaneously.

Originality/value

The research provides insights into the development of an innovative approach appropriate to the evaluation of IT supporting clinical trials, through the use of a mixed‐method based on qualitative and quantitative modeling. The results illustrate two critical issues addressed in the IS literature: the necessity to extend IT evaluation beyond the quantitative‐qualitative dichotomy; and the role of evaluation in organizational learning, and in learning about business dimensions.

Available. Open Access. Open Access
Article
Publication date: 8 February 2023

Edoardo Ramalli and Barbara Pernici

Experiments are the backbone of the development process of data-driven predictive models for scientific applications. The quality of the experiments directly impacts the model…

996

Abstract

Purpose

Experiments are the backbone of the development process of data-driven predictive models for scientific applications. The quality of the experiments directly impacts the model performance. Uncertainty inherently affects experiment measurements and is often missing in the available data sets due to its estimation cost. For similar reasons, experiments are very few compared to other data sources. Discarding experiments based on the missing uncertainty values would preclude the development of predictive models. Data profiling techniques are fundamental to assess data quality, but some data quality dimensions are challenging to evaluate without knowing the uncertainty. In this context, this paper aims to predict the missing uncertainty of the experiments.

Design/methodology/approach

This work presents a methodology to forecast the experiments’ missing uncertainty, given a data set and its ontological description. The approach is based on knowledge graph embeddings and leverages the task of link prediction over a knowledge graph representation of the experiments database. The validity of the methodology is first tested in multiple conditions using synthetic data and then applied to a large data set of experiments in the chemical kinetic domain as a case study.

Findings

The analysis results of different test case scenarios suggest that knowledge graph embedding can be used to predict the missing uncertainty of the experiments when there is a hidden relationship between the experiment metadata and the uncertainty values. The link prediction task is also resilient to random noise in the relationship. The knowledge graph embedding outperforms the baseline results if the uncertainty depends upon multiple metadata.

Originality/value

The employment of knowledge graph embedding to predict the missing experimental uncertainty is a novel alternative to the current and more costly techniques in the literature. Such contribution permits a better data quality profiling of scientific repositories and improves the development process of data-driven models based on scientific experiments.

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Article
Publication date: 7 August 2023

Sunil Sangwan, Narayan Chandra Nayak and Vikas Sangwan

Regulation is critical for sustainable microfinance sector growth. Under this premise, the study aims to examine the different regulatory noncompliance (RNC) practices prevalent…

101

Abstract

Purpose

Regulation is critical for sustainable microfinance sector growth. Under this premise, the study aims to examine the different regulatory noncompliance (RNC) practices prevalent in the operations of microfinance institutions (MFIs) at the ground level.

Design/methodology/approach

Both the quantitative and qualitative (observations, interviews and focus group discussions) techniques are used to extract the findings.

Findings

The study highlights the different RNC practices exercised by the loan officers at the field level in their microfinance loan disbursements.

Originality/value

This study is based on the primary data collected from microfinance clients. The arguments put forth for the RNC practices are extracted from direct personal interviews with the loan officers and the clients. The role of various dilemmas/circumstances of the loan officers and the beneficiaries that implicate the MFIs in RNC is highlighted.

Details

Journal of Financial Regulation and Compliance, vol. 31 no. 5
Type: Research Article
ISSN: 1358-1988

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Article
Publication date: 1 February 1999

Stewart Robinson

The publication of the first results of the SERVQUAL instrument provoked a debate on how best to measure service quality. With more than a decade since the publication of those…

9049

Abstract

The publication of the first results of the SERVQUAL instrument provoked a debate on how best to measure service quality. With more than a decade since the publication of those results many researchers have attempted to demonstrate the efficacy, or not, of the SERVQUAL instrument, or to develop their own measurement methods. This paper reviews this debate in relation to six key aspects: the purpose of the measurement instrument; the definition of service quality; models for service quality measurement; the dimensionality of service quality; issues relating to expectations; and the format of the measurement instrument. The main areas of agreement and disagreement are identified. As a result the continued use of the SERVQUAL instrument is called into question, and areas for further research are identified.

Details

Marketing Intelligence & Planning, vol. 17 no. 1
Type: Research Article
ISSN: 0263-4503

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