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In this paper the authors review the recent numerical techniques proposed to solve the forward and inverse problems concerning the electromagnetic casting and electromagnetic levitation techniques of the metallurgical industry. In addition, the authors present a new topology optimization method to solve the inverse axisymmetric electromagnetic levitation problem.

The proposed method is based on an exact second-order topological expansion of a Kohn–Vogelius-like functional specially devised for this problem.

Through some examples the authors show that it can find suitable solutions efficiently.

The new method completes the set of efficient methods available to solve the inverse electromagnetic casting and the inverse axisymmetric electromagnetic levitation problems.

The purpose of this paper is to investigate the lateral forces during the fall of a magnet in a conducting pipe, when the direction of magnetization of the magnet is fixed. If the direction of magnetization is not parallel to the axis of the pipe, lateral forces occur and a decentration of the magnet happens.

The problem is studied numerically, with a T − h 3D FE formulation well‐suited for the problem. Computational results are compared with experimental results.

The physical model is given and the main force coefficients analyzed. The lateral forces and the decentration phenomenon are studied as a function of the main parameters (thickness and radius of the pipe).

The direction of magnetization is a key parameter to analyze the dynamics of a magnet motion inside a conducting pipe, when the radii of the pipe and the magnet are not so close. This analysis with a fixed direction of magnetization allows one to quantify the lateral forces and the decentration, and is a first step to understand the complete motion which includes the rotation which can be linked to the decentration.

This study aims to investigate the cross-sectional reshaping in transitioning/starting rectangular jets of aspect ratio 2 under various inlet perturbation conditions at the Reynolds number of Re = UD_h/v = 17,750.

Large eddy simulation results compared with the phase-locked particle image velocimetry data exhibit the cross-sectional jet deformations from rectangular to rounder shapes. Inflow velocity oscillations are introduced at the fundamental frequency associated with the Kelvin–Helmholtz instability characterized by the spectral analysis of the hotwire data and the linear stability predictions.

The initially rectangular cross-section of the jet reshapes into the rounder geometries with increased downstream distance while the edges of the jet become distorted due to the shear layer instability more significantly observed near the high curvature corners. The different expansion rates in the longer and shorter edges of the jet and the consequent cross-sectional reshaping are found to be sensitive to small levels of random inlet perturbations. In addition, introducing controlled sinusoidal oscillations results in the formation of more organized trailing shear layer where the stronger vortex rings go through the curvature-induced deformations.

Spatio-temporal study of vortex dynamics in transitioning rectangular jets reveals important information about the effect of the controlled jet forcing on local entrainment. Dynamics of the leading vortex dominates the entrainment in transitioning jets which are commonly used in practical applications. Near-field entrainment is also promoted proportional to the amplitude of the controlled inlet oscillations within the trailing vortex rings.

The main objective of this work is to develop a boundary treatment in lattice Boltzmann method (LBM) for curved and moving boundaries and using this treatment to study numerically the flow around a rotating isothermal circular cylinder with/without heat transfer.

A multi‐distribution function thermal LBM model is used to simulate the flow and heat transfer around a rotating circular cylinder. To deal with the calculations on the surface of cylinder, a novel boundary treatment is developed.

The results of simulation for flow and heat transfer around a rotating cylinder including the evolution with time of velocity field, and the lift and drag coefficients are compared with those of previous theoretical, experimental and numerical studies. Excellent agreements show that present LBM including boundary treatment can achieve accurate results of flow and heat transfer. In addition, the effects of the peripheral‐to‐translating‐speed ratio, Reynolds number and Prandtl number on evolution of velocity and temperature fields around the cylinder are tested.

There is a large class of industrial processes which involve the motion of fluid passing rotating isothermal circular cylinders with/without heat transfer. Operations ranging from paper and textile making machines to glass and plastics processes are a few examples.

A strategy for LBM to treat curved and moving boundary with the second‐order accuracy for both velocity and temperature fields is presented. This kind of boundary treatment is very easy to implement and costs less in computational time.

The aim of this paper is to propose a Web environment for pre-processing and post-processing for 2D problems in generalized coordinate systems.

The system consists of a Web service for client-server communication, a database for user information, simulation requests and results storage, a module of (for) calculation processing (front-end) and a graphical interface for visualization of discretized mesh (back-end).

The Web system was able to model real problems and situations, where the user can describe the problem or upload a geometry file descriptor, generated from computer graphics software. The Web system, programmed for finite difference solutions, was able to generate a mesh from other complex methods, such as finite elements method, adapting it to the proposed Web system, respecting the finite difference mesh structure.

The proposed Web system is limited to solve partial differential equations by finite difference discretization. We need to study about refinement and parameters adaptations to solve partial differential equations simulated with other methods.

The Web system includes implications for the development of a powerful real problems simulator, which is useful for computational physics researchers and engineers. The Web system uses several technologies, such as Primefaces, JavaScript, JQuery and HTML, to provide an interactive user interface.

The main contribution of this work is the availability of a generic Web architecture for including other types of coordinate systems and to solve others partial differential equations. Moreover, this paper presents an extended version of the work presented in ICCSA 2014.

The purchasing power of public sector organizations can be used to promote strategic policy objectives such as sustainability, innovation, and the concept of circular economy (CE). In Denmark, total greenhouse gas emissions from public procurement (PP) activities comprise approximately 12 million tons CO₂eq/year. Thus, if sustainability criteria and CE are considered in PP, there is a potential for environmental savings and for driving innovation toward circularity. Directive 2014/24/EU on PP makes it possible to include sustainability criteria or CE in public tenders. In order to aid this process, the case company Vraa Dampvaskeri has, together with researchers from Aalborg University, developed a guide for sustainable PP focusing on workwear and laundry services. In this chapter, we explore how this guide has been used in practice. This includes a consideration of the way in which such a guide can aid the process of setting sustainable and circular criteria in public tenders, thus supporting a transition to CE. Although the guide is now supported by national criteria for textiles in the Danish Partnership for Green PP, these tools cannot stand alone, as their use by PP officers is voluntary. Market engagement is imperative for inclusion of sustainability and CE in tenders, and the involvement of user groups is essentially important.

This paper aims to provide an integrated legal and marketing perspective on the imminent trademark challenges and opportunities for sports organizations operating in the metaverse.

The approach is a legal commentary that explores the ways in which the current legal framework, especially in the context of trademarks, might need to transform to offer robust protection for sports brands in the virtual marketplaces emerging within the metaverse.

Our analysis reveals that the traditional legal frameworks for trademarks are often inadequate to address the unique challenges posted by the metaverse, such as the issue of virtual goods replication and the global accessibility of branded content. The findings indicate that sport organizations must adopt proactive strategies to monitor and enforce their trademark rights effectively within these expansive digital environments. Moreover, legislative bodies may need to consider reforms or new regulations specifically tailored to the complexities of trademark protection in the digital realm to prevent dilution and misuse of sport brands.

In light of legal and branding issues related to metaverse-based trademarks, this paper is dedicated to examining the legal principles and foundations necessary to enhance the protection of sports brands within the virtual marketplace of the metaverse.

Je vous entretiendrai de ce qui tient lieu en France de politique de l'information. Je pense en réalité qu'il s'agit plutôt d'une non‐politique de l'information et je vais tenter de vous expliquer pourquoi. Il faut pour cela d'abord caractériser la situation qui prévaut en France en matière d'information.

The purpose of this paper is to offer a critical examination of industrial relations in Denmark.

The approach is based upon available data and a mixture of Marxist theory and systems theory. The theoretical position is discussed in relation to the academic discourses on the main characteristics of Danish industrial relations and provides a review of the foundation and historical development of the Danish system.

From this basis, it is analysed how the stagnation or decline has taken place in recent years regarding representation of workers’ interest as well as the ability of the Danish system to maintain its key importance when challenged by decentralisation, decreasing union affiliation rates, cuts in unemployment insurance and social dumping due to labour migration.

It is an original paper which offers a critical analysis of the institutional decline and increasing inequality that are the result of the liberalist political-economic hegemony.

This study aims to assess subjective responses in computer science education to understand students' grasp of core concepts. Extracting key ideas from short answers remains challenging, necessitating an effective method to enhance learning outcomes.

This study introduces KeydistilTF, a model to identify essential concepts from student and teacher responses. Using the University of North Texas dataset from Kaggle, consisting of 53 teachers and 1,705 student responses, the model’s performance was evaluated using the F1 score for key concept detection.

KeydistilTF outperformed baseline techniques with F1 scores improved by 8, 6 and 4% for student key concept detection and 10, 8 and 6% for teacher key concept detection. These results indicate the model’s effectiveness in capturing crucial concepts and enhancing the understanding of key curriculum content.

KeydistilTF shows promise in improving the assessment of subjective responses in education, offering insights that can inform teaching methods and learning strategies. Its superior performance over baseline methods underscores its potential as a valuable tool in educational settings.