C. Zardini, J.D. Pistre, F. Rodes and J.L. Aucouturier
Water cooling of hybrid modules allows a power dissipation much higher than that of conventional methods. This paper describes the design and construction of a copper‐clad Invar…
Abstract
Water cooling of hybrid modules allows a power dissipation much higher than that of conventional methods. This paper describes the design and construction of a copper‐clad Invar water‐cooled hybrid power circuit intended for use in a medical hand‐held tool which is a 25 mm diameter cylinder. The thermal study demonstrates the interest of a copper‐clad Invar heat exchanger: water flowing at a rate lower than 15 Ih−1 allows the dissipation of more than 50 W in the module while keeping the external temperature of the tool below 35°C.
Marc Monneraye, Panizza, Brian Waterfield, John Knowles and P.L. Bainbridge
A month or so after the Stresa meeting, the French ISHM chapter, organising a session on ‘Gallic inks’ (!), summoned me to deliver some comments on the 5th European Hybrid…
Abstract
A month or so after the Stresa meeting, the French ISHM chapter, organising a session on ‘Gallic inks’ (!), summoned me to deliver some comments on the 5th European Hybrid Microelectronics Conference. Although it was only a matter of interlude during this technical session, I felt the task quite a difficult one. It became a hazardous project when Brian C. Waterfield kindly asked me to let what is in fact a personal opinion—my personal opinion, standing back from my daily work—appear in Hybrid Circuits. I'll do my best.
Brian Waterfield, Peter Moran and Nihal Sinnadurai
ISHM (UK) presented a technical meeting on this topic on the 23rd October 1982 at the Cunard International Hotel, London. The meeting was attended by some 50 engineers, both those…
Abstract
ISHM (UK) presented a technical meeting on this topic on the 23rd October 1982 at the Cunard International Hotel, London. The meeting was attended by some 50 engineers, both those involved in the field of hybrids and potential users. It was generally felt that this was a useful meeting but more especially that it would have appealed to many potential users of hybrids, had the right people been able to be contacted.
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.
K. Arshak, E. Moore, G.M. Lyons, J. Harris and S. Clifford
This paper reviews the range of sensors used in electronic nose (e‐nose) systems to date. It outlines the operating principles and fabrication methods of each sensor type as well…
Abstract
This paper reviews the range of sensors used in electronic nose (e‐nose) systems to date. It outlines the operating principles and fabrication methods of each sensor type as well as the applications in which the different sensors have been utilised. It also outlines the advantages and disadvantages of each sensor for application in a cost‐effective low‐power handheld e‐nose system.
O. Korostynska, A. Mason and A. Al-Shamma'a
This paper aims to discuss the general principles behind the microwave sensing and demonstrates the potential of cavity microwave resonator device in real-time monitoring for…
Abstract
Purpose
This paper aims to discuss the general principles behind the microwave sensing and demonstrates the potential of cavity microwave resonator device in real-time monitoring for: environmental monitoring with the focus on wastewater pollution, a system for oil/gas/water content evaluation in a dynamic pipeline, a system for real-time determination of bacteria concentration and a method for non-invasive glucose determination.
Design/methodology/approach
Microwave sensing is a rapidly developing technology which has been successfully used for various industrial applications including water level measurements, material moisture content, in construction industry for non-invasive evaluation of structures and even in the healthcare industry for non-invasive real-time monitoring of glucose in diabetic patients. Novel microwave cavities designed and tested for specific applications are presented.
Findings
The paper provides experimental results of testing the novel microwave sensing systems in a range of industrial and healthcare applications and discusses the potential of these systems for real-time monitoring of processes and parameters.
Research limitations/implications
The concept of real-time microwave sensing was successfully tested, but further experiments are required to account for possible interference mechanisms before it can be used commercially on a large-scale.
Practical implications
It is suggested that a novel approach to wastewater monitoring, namely using specially designed microwave cavity sensors, could lead to a successful development of an advanced platform capable of providing for a real-time detection of water content with superior sensitivity. Also, a system for real-time multiphase fluid composition monitoring is reported, which is essential for sustainable oil industry operation.
Originality/value
The paper illustrated the potential of microwave sensing as a real-time monitoring platform for a broad spectrum of commercial applications, with a focus on system developed by the authors, namely, for the monitoring of a multiphase fluid flow in a dynamic oil pipeline, for real-time monitoring of nutrients concentration in wastewater and for healthcare industry, in particular for real-time non-invasive determination of the glucose levels and bacteria concentration.
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While qualitative work has a long tradition in the strategy field and has recently regained popularity, we have not paused to take stock of how such work offers contributions. We…
Abstract
While qualitative work has a long tradition in the strategy field and has recently regained popularity, we have not paused to take stock of how such work offers contributions. We address this oversight with a review of qualitative studies of strategy published in five top-tier journals over an extended period of 15 years (2003–2017). In an attempt to organize the field, we develop an empirically grounded organizing framework. We identify 12 designs that are evident in the literature, or “designs-in-use” as we call them. Acknowledging important similarities and differences between the various approaches to qualitative strategy research (QSR), we group these designs into three “families” based on their philosophical orientation. We use these designs and families to identify trends in QSR. We then engage those trends to orient the future development of qualitative methods in the strategy field.
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Giovanni Valentini and Maria Chiara Di Guardo
The paper explores the impact of mergers and acquisitions (M&As) on technological performance. We posit that the post‐acquisition technological performance is positively related…
Abstract
The paper explores the impact of mergers and acquisitions (M&As) on technological performance. We posit that the post‐acquisition technological performance is positively related to the technological combination potential of the merging firms and to their ability to realize this potential. In turn, the combination potential depends on M&As motives aimed at complementing firms’ technological resources, whereas firms’ ability to realize their potential is significantly influenced by their prior experience in M&As and technology integration.
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João Carvalho Santos, Hortênsia Barandas-Karl and Francisco Vitorino Martins
In this chapter we test a conceptual model to shed light on the psychic distance (PD) hazards in cross-border acquisitions’ (CBAs’) performance. Only a few studies have sought to…
Abstract
In this chapter we test a conceptual model to shed light on the psychic distance (PD) hazards in cross-border acquisitions’ (CBAs’) performance. Only a few studies have sought to examine the impact of national-level dimensions on CBAs’ performance, such as cultural distance or PD, with non-conclusive and contradictory results. Event study methodology is used to scrutinize the impact of the five key dimensions of psychic distance stimuli (PDS) on the stock market performance of the US acquirer firms and 26 countries involved in the CBA. Our results support that PD, as a whole, has a negative impact on CBAs’ performance although only in the short term there is a statistically significant negative impact, whereas in the long term no effect is statistically significant. Analyzing the different dimensions of PDS, only differences in language, education, and political systems are significant. This chapter is the first to empirically examine the PD hazards on CBAs by breaking down the PDS and test the effect of each dimension on CBAs´ performance. The findings of this study may be useful for managers of firms that wish to undertake CBAs as it denotes important dimensions which hinder post-deal performance.
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Beginning with the premise that complementary resources represent the most valuable resource combinations, theory is developed to explain the impact of complementary resources on…
Abstract
Beginning with the premise that complementary resources represent the most valuable resource combinations, theory is developed to explain the impact of complementary resources on firm boundary decisions. Uncertainty surrounding resource combinations or control of a complementary resource influences firm boundaries by impacting access to needed resources. An implication is that acquisition decisions and performance are influenced by prior investment. Resulting insights have competitive advantage implications of interest to both management research and practice.