G. De Mey, L. Rottiers, M. Driscart, E. Boone and L. Van Schoor
In this paper the temperature distribution in hybrid circuits will be studied in two different ways. First of all the results of numerical simulations obtained with the programs…
Abstract
In this paper the temperature distribution in hybrid circuits will be studied in two different ways. First of all the results of numerical simulations obtained with the programs PROMETHEE and HYBRITHERM will be shown. Secondly, experimental temperature plots obtained with infra‐red thermography will be compared with the theoretical results. The influence of the substrate material (epoxy, glass, Al2O3, AlN and BeO) on the temperature distribution will be demonstrated. Various ways of cooling will also be considered. It will be shown that using high quality substrates such as AlN or BeO is not always useful from a thermal point of view.
In this contribution a linear thermal model for hybrid circuits is presented. Both the heat dissipated in screen printed resistors and in mounted components such as transistors…
Abstract
In this contribution a linear thermal model for hybrid circuits is presented. Both the heat dissipated in screen printed resistors and in mounted components such as transistors and integrated circuits is taken into account.
In this contribution a short review is given on thermal analysis of hybrid circuits using 2‐D, 3‐D and time‐dependent models. It will be shown which models are necessary to be…
Abstract
In this contribution a short review is given on thermal analysis of hybrid circuits using 2‐D, 3‐D and time‐dependent models. It will be shown which models are necessary to be included in a CAD system for hybrid circuit design.
The paper presents a two‐dimensional and three‐dimensional thermal model of the power hybrid circuit. Measurement of the accuracy of temperature computation using the…
Abstract
The paper presents a two‐dimensional and three‐dimensional thermal model of the power hybrid circuit. Measurement of the accuracy of temperature computation using the two‐dimensional model is carried out. Based on both models, the AUTO_T program for thermal analysis is created. This program chooses the proper model according to the required accuracy of computation. The reduction of the computational time is evident.
Ouided Dehas, Laidi Babouri, Yasmina Biskri and Jean-Francois Bardeau
This study aims to deal with both the development and mechanical investigations of unsaturated polyester matrix (UPR) composites containing recycled polyethylene terephthalate…
Abstract
Purpose
This study aims to deal with both the development and mechanical investigations of unsaturated polyester matrix (UPR) composites containing recycled polyethylene terephthalate (PET) fibers as new fillers.
Design/methodology/approach
UPR/PET fibers composites have been developed as mats by incorporating 5, 8, 13 and 18 parts per hundred of rubber (phr) of 6-, 10- and 15-mm length PET fibers from the recycling of postconsumer bottles. The mechanical and physical properties of the composites were investigated as a function of fiber content and length. A significant increase in stress at break and in ultimate stress (sr) were observed for composites reinforced with 5 and 8 phr of 15-mm length PET fibers. The Izod impact strength of UPR/mat PET fiber composites as a function of fiber rate and length showed that the 5 and 8 phr composites for the 15-mm length PET fiber have the optimal mechanical properties 13.55 and 10.50 Kj/m2, respectively. The morphological study showed that the strong adhesion resulting from the affinity of the PET fiber for the UPR matrix. The ductile fracture of materials reinforced with 5 and 8 phr is confirmed by the fiber deformation and fracture surface roughness.
Findings
This study concluded that the PET fiber enhances the properties of composites, a good correlation was observed between the results of the mechanical tests and the structural analysis revealing that for the lower concentrations, the PET fibers are well dispersed into the resin, but entanglements are evidenced when the fiber content increases.
Originality/value
It can be shown from scanning electron microscopy micrographs that the fabrication technique produced composites with good interfacial adhesion between PET fibers and UPR matrix.
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B. Radojcoić, R. Ramović and O. Aleksić
A two‐dimensional model for hybrid circuits is presented in this paper. Simulation results of a hybrid power module for different power dissipation of components and ambient…
Abstract
A two‐dimensional model for hybrid circuits is presented in this paper. Simulation results of a hybrid power module for different power dissipation of components and ambient temperature are given. The experimental contribution is based on thermal measurements of the realized hybrid power module using a matrix of flip‐chip sensors. Thermal measurements were taken at different ambient temperatures and different hybrid module power values. The temperature distributions obtained theoretically and experimentally are compared and analyzed. Finally, the contribution of the temperature distributions and measured temperatures to the reliability of the hybrid power module is given.
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Marialuisa Saviano, Asha Thomas, Marzia Del Prete, Daniele Verderese and Pasquale Sasso
This paper aims to contribute to the discussion on integrating humans and technology in customer service within the framework of Society 5.0, which emphasizes the growing role of…
Abstract
Purpose
This paper aims to contribute to the discussion on integrating humans and technology in customer service within the framework of Society 5.0, which emphasizes the growing role of artificial intelligence (AI). It examines how effectively new generative AI-based chatbots can handle customer emotions and explores their impact on determining the point at which a customer–machine interaction should be transferred to a human agent to prevent customer disengagement, referred to as the Switch Point (SP).
Design/methodology/approach
To evaluate the capabilities of new generative AI-based chatbots in managing emotions, ChatGPT-3.5, Gemini and Copilot are tested using the Trait Emotional Intelligence Questionnaire Short-Form (TEIQue-SF). A reference framework is developed to illustrate the shift in the Switch Point (SP).
Findings
Using the four-intelligence framework (mechanical, analytical, intuitive and empathetic), this study demonstrates that, despite advancements in AI’s ability to address emotions in customer service, even the most advanced chatbots—such as ChatGPT, Gemini and Copilot—still fall short of replicating the empathetic capabilities of human intelligence (HI). The concept of artificial emotional awareness (AEA) is introduced to characterize the intuitive intelligence of new generative AI chatbots in understanding customer emotions and triggering the SP. A complementary rather than replacement perspective of HI and AI is proposed, highlighting the impact of generative AI on the SP.
Research limitations/implications
This study is exploratory in nature and requires further theoretical development and empirical validation.
Practical implications
The study has only an exploratory character with respect to the possible real impact of the introduction of the new generative AI-based chatbots on collaborative approaches to the integration of humans and technology in Society 5.0.
Originality/value
Customer Relationship Management managers can use the proposed framework as a guide to adopt a dynamic approach to HI–AI collaboration in AI-driven customer service.
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Nick Vink, Alain Deloire, Valerie Bonnardot and Joachim Ewert
The purpose of this article is to attempt to synthesise the lessons from at least four different ways of looking at the South Africa wine industry: economics, climatology…
Abstract
Purpose
The purpose of this article is to attempt to synthesise the lessons from at least four different ways of looking at the South Africa wine industry: economics, climatology, viticulture, and the sociology of work.
Design/methodology/approach
The economic performance of South Africa's wine industry since democratisation in the early 1990s is reviewed, as is the effect of climate change on the industry. This is followed by an assessment of possible strategies for building international competitiveness whilst simultaneously coping with the effects of climate change.
Findings
While industry systems should allow the marketing of speciality wines (e.g. from a single vineyard, from a single estate), this is not a viable strategy for most wine producers. Furthermore, climate change will lead to volatility in the characteristics that identify different terroirs.
Practical implications
Industry strategies should rather focus on the benefits of diversity, but with a range of adaptations that will also result in better quality wines. These encompass quality; geographic location; viticultural practices; the style of wines and the renewal of skills. In synthesising this argument, the authors then consider whether such a strategy could enhance or hinder greater international competitiveness for the industry.
Originality/value
The results can be taken into consideration by policy makers and industry stakeholders in designing future strategies.
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Keywords
Morteza Abdullatif Khafaie, Narges Mobasheri, Mahin Kheirollahi and Leila Ghahremani
To evaluate the efficacy of a PRECEDE model-based educational program in enhancing awareness, attitudes and preventive behaviors against diabetes complications among rural…
Abstract
Purpose
To evaluate the efficacy of a PRECEDE model-based educational program in enhancing awareness, attitudes and preventive behaviors against diabetes complications among rural patients with type 2 diabetes mellitus (T2DM).
Design/methodology/approach
This quasi-experimental study included 160 T2DM patients from rural health centers in Andimeshk, Iran (2020–2021). Participants were randomly assigned to intervention (n = 80) or control (n = 80) groups. The intervention group received a six-session in-person educational program, supplemented by weekly lifestyle videos via WhatsApp over six weeks, guided by PRECEDE model constructs. A validated questionnaire assessed knowledge, attitudes, enabling and reinforcing factors, and preventive behaviors pre- and post-intervention.
Findings
Post-intervention, the intervention group demonstrated significantly (p < 0.001) higher mean scores in knowledge, attitudes, enabling factors, reinforcing factors and preventive behaviors than controls. Fasting blood sugar (FBS) levels were significantly (p < 0.001) reduced in the intervention group at three-month follow-up.
Originality/value
The findings demonstrate that a comprehensive program grounded in the PRECEDE model can significantly enhance patients’ awareness, strengthen positive attitudes, increase enabling and reinforcing factors and promote preventive lifestyle behaviors. Importantly, the intervention led to improved glycemic control, as evidenced by reduced fasting blood sugar levels at three-month follow-up. These results suggest that tailored, theory-driven educational initiatives have the potential to empower rural patients with type 2 diabetes to make sustainable lifestyle changes and better manage their condition. The study provides a model for developing and implementing effective diabetes self-management programs in underserved rural communities, which can ultimately contribute to reducing diabetes-related complications and improving overall health outcomes in this population.