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1 – 3 of 3Marta Osta, Claudio Carretero, Pilar Blasco, Enrique Carretero and Rafael Alonso
This paper aims to analyze the conical-shaped compensator applied to infrared (IR) thermometry for planar materials.
Abstract
Purpose
This paper aims to analyze the conical-shaped compensator applied to infrared (IR) thermometry for planar materials.
Design/methodology/approach
The compensator for the IR thermometry system has been analyzed by means of numerical simulations performed in a commercial finite element analysis tool. Afterwards, the characteristics of a final system have been proposed. The simulation results have been validated by means of experimental measurements performed in a prototype of the proposed system.
Findings
The proposed conical shape geometry of the compensator is suitable to reduce the errors associated with the temperature estimation by IR thermometry when emissivity of the material is not known with adequate accuracy.
Practical implications
This work proposed an arrangement of conical-shaped compensator to increase the precision in the IR radiation thermometry of planar materials.
Originality/value
In this paper, the conical shape geometry is proposed instead of the classical semi-spherical geometry for the compensator of an IR radiation thermometry system with the purpose of reducing the thickness of the complete system. This new proposal can be advantageous when geometrical constraints are imposed.
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Claudio Carretero, Óscar Lucía, Jesús Acero, Rafael Alonso and José M. Burdío
The aim of this paper is to propose a design procedure based on the impedance boundary condition in order to simplify the design of inductors for domestic induction heating…
Abstract
Purpose
The aim of this paper is to propose a design procedure based on the impedance boundary condition in order to simplify the design of inductors for domestic induction heating systems.
Design/methodology/approach
An electromagnetic description of the inductor system is performed to substitute the effects of a component, named system load, for a mathematical condition, the so‐called impedance boundary condition. This is suitable to be used in electromagnetic systems involving high conductive materials at medium frequencies, as it occurs in an induction heating system. Applying this approach, a simplified electrical model arises from the general system.
Findings
A considerable reduction in the efforts devoted to design a coil for induction heating purposes is achieved, because the solution considering the variation of three physical parameters are projected to a one‐dimensional space only depending on a single parameter named corrected penetration depth. This proposal assesses the working conditions of standard induction systems.
Practical implications
This work is performed to achieve a better understanding of the fundamentals involved in the electromagnetic modeling of an induction heating system. The main goal is the definition of a better coil design process because it is probably the most time‐consuming task in the construction of a complete induction system.
Originality/value
In this paper, the so‐called corrected penetration depth is defined. This single parameter allows explaining the influence of the physical parameter of the inductor load and the excitation frequency in the equivalent of the complete inductor system. The numerical results carried out considering the corrected penetration depth instead of the physical load properties have been validated experimentally.
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Carlos Lopezosa, Dimitrios Giomelakis, Leyberson Pedrosa and Lluís Codina
This paper constitutes the first academic study to be made of Google Discover as applied to online journalism.
Abstract
Purpose
This paper constitutes the first academic study to be made of Google Discover as applied to online journalism.
Design/methodology/approach
This paper constitutes the first academic study to be made of Google Discover as applied to online journalism. The study involved conducting 61 semi-structured interviews with experts that are representative of a range of different professional profiles within the fields of journalism and search engine positioning (SEO) in Brazil, Spain and Greece. Based on the data collected, the authors created five semantic categories and compared the experts' perceptions in order to detect common response patterns.
Findings
This study results confirm the existence of different degrees of convergence and divergence in the opinions expressed in these three countries regarding the main dimensions of Google Discover, including specific strategies using the feed, its impact on web traffic, its impact on both quality and sensationalist content and on the degree of responsibility shown by the digital media in its use. The authors are also able to propose a set of best practices that journalists and digital media in-house web visibility teams should take into account to increase their probability of appearing in Google Discover. To this end, the authors consider strategies in the following areas of application: topics, different aspects of publication, elements of user experience, strategic analysis and diffusion and marketing.
Originality/value
Although research exists on the application of SEO to different areas, there have not, to date, been any studies examining Google Discover.
Peer review
The peer-review history for this article is available at: https://publons.com/publon/10.1108/OIR-10-2022-0574
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