Ralf T. Jacobs, Thomas Wondrak and Frank Stefani
The contactless inductive flow tomography is a procedure that enables the reconstruction of the global three-dimensional flow structure of an electrically conducting fluid by…
Abstract
Purpose
The contactless inductive flow tomography is a procedure that enables the reconstruction of the global three-dimensional flow structure of an electrically conducting fluid by measuring the flow-induced magnetic flux density outside the melt and by subsequently solving the associated linear inverse problem. The purpose of this study is to improve the accuracy of the computation of the forward problem, since the forward solution primarily determines the accuracy of the inversion.
Design/methodology/approach
The tomography procedure is described by a system of coupled integral equations where the integrals contain a singularity when a source point coincides with a field point. The integrals need to be evaluated to a high degree of precision to establish an accurate foundation for the inversion. The contribution of a singular point to the value of the surface and volume integrals in the system is determined by analysing the behaviour of the fields and integrals in the close proximity of the singularity.
Findings
A significant improvement of the accuracy is achieved by applying higher order elements and by attributing special attention to the singularities inherent in the integral equations.
Originality/value
The contribution of a singular point to the value of the surface integrals in the system is dependent upon the geometry of the boundary at the singular point. The computation of the integrals is described in detail and the improper surface and volume integrals are shown to exist. The treatment of the singularities represents a novelty in the contactless inductive flow tomography and is the focal point of this investigation.
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Purpose: This study examines the key role of diversity management in supporting intellectual capital in organisations. Intellectual capital, which includes the knowledge, skills…
Abstract
Purpose: This study examines the key role of diversity management in supporting intellectual capital in organisations. Intellectual capital, which includes the knowledge, skills and innovative potential of employees, is recognised as a valuable resource that drives organisational success. By embracing diversity and managing it effectively, organisations can unleash the full potential of their intellectual capital and achieve a lot of benefits.
Methodology: The study is based on primary data. The research method used to achieve the objective and answer the research questions is a critical analysis of the literature on the subject, as well as an analysis of the qualitative research conducted by the author on the topic of building intellectual capital of enterprises in Poland conducted in 2019. The study used a dataset of 1,067 enterprises operating in Poland (with at least 10 employees).
Findings: It should be noted that this study underscores the crucial role of diversity management in enhancing intellectual capital within organisations. By embracing diversity and fostering an inclusive environment, organisations can tap into collective intelligence, creativity, and problem-solving capabilities of a diverse workforce. The benefits extend beyond organisational performance, encompassing innovation, employee engagement, and customer satisfaction.
Significance: The study highlights that it is imperative for organisations to implement effective diversity management strategies and continuously evaluate their progress to unlock the full potential of their intellectual capital and drive sustainable success in a rapidly evolving global landscape.
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Manfred Wondrak and Astrid Segert
The purpose of this paper is to study current problems of implementing Diversity Management (DM) in businesses and presents a concept for measuring and estimating a value for…
Abstract
Purpose
The purpose of this paper is to study current problems of implementing Diversity Management (DM) in businesses and presents a concept for measuring and estimating a value for diversity interventions.
Design/methodology/approach
An intellectual capital approach is used to identify a matrix of problems while implementing DM. To address the accounting problem for DM, advantages and disadvantages of the Diversity Scorecard are discussed and issues that require further conceptual development are identified.
Findings
Understanding DM as a part of intellectual capital helps solve accounting problems. The tests of the concept of Diversity Impact Navigator show that measuring DM at this stage requires a simple design, that using key indicators forces diversity interventions and that the process of valuation increases the understanding of DM by all stakeholders and thus its economic legitimation.
Originality/value
A newly developed concept helps solve the problem of measurement and valuation of DM. The paper presents the first test results.
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Rajneesh Kumar and Pradeep Kumar Jha
The purpose of this article is to numerically investigate the effect of casting speed on the fluid flow, solidification and inclusion motion under the influence of electromagnetic…
Abstract
Purpose
The purpose of this article is to numerically investigate the effect of casting speed on the fluid flow, solidification and inclusion motion under the influence of electromagnetic stirring (EMS) in the bloom caster mold with bifurcated submerged entry nozzle (SEN).
Design/methodology/approach
The electromagnetic field obtained by solving Maxwell’s equation is coupled with the fluid flow, solidification and discrete phase model using the in-house user-defined functions. An enthalpy porosity approach and Lagrangian approach are applied for the solidification analysis and non-metallic inclusions motion tracking, respectively.
Findings
Investigation shows that the casting speed and EMS significantly affect the steel flow, solidification and inclusion behavior inside the mold. Investigations are being conducted into the complex interplay between the induced flow and the SEN’s inertial impinging jet. In low and medium casting speeds, the application of EMS significantly increases the inclusion removal rate. Inclusion removal is studied for its different size and density and further effect of EMS is also reported on cluster formation and distribution of inclusion in the domain.
Practical implications
The model may be used to optimize the process parameter (casting speed and EMS) to improve the casting quality of steel by removing the impurities.
Originality/value
The effect of casting speed on the solidification and inclusion behavior under the influence of time-varying EMS in bloom caster mold with bifurcated nozzle has not been investigated yet. The findings may assist the steelmakers in improving the casting quality.
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Nils Böckler, Thorsten Seeger and Peter Sitzer
Purpose – The relationship of media influences and school shootings is analyzed on the background of an integrating metatheoretical framework, derived from socialization theory…
Abstract
Purpose – The relationship of media influences and school shootings is analyzed on the background of an integrating metatheoretical framework, derived from socialization theory and a media appropriation model grounded in action theory.
Design/approach – Empirical findings and dynamic models of the significance of the media in the genesis of school shootings are integrated into the framework based on a review of the literature. Special focus is placed on the subjective functionality of the perpetrators’ prior media use, which is examined for its dependence on individual, cultural/societal, and interpersonal factors.
Findings – School shootings are a form of extreme violence where monocausal explanations fall short and cannot adequately account for the complex multifactorial causes of the phenomenon. However, we come to the conclusion that particular media do play a special role in the origination of school shootings, but in a way that can only be adequately comprehended if they are examined in connection with specific individual, socio-cultural, and interpersonal dynamics.
Originality/value – The chapter presents a conceptual frame within which possible relationships between media influence and school shootings are identified in the socialization contexts of the adolescent perpetrators.