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A thick film superconductor paste has been produced to determine the properties of granulated superconductor materials and to observe the percolation effect. The base of the paste was chosen to be of the BiSrCaCuO system because of its high Tc and advantageous current density properties. For contacts, a conventional Ag/Pt paste was used. The critical temperature was between 110 K and 115 K depending on the printed layer thickness. The critical current density was between 200 and 300 A/cm2. The R‐T and U‐l functions were measured with different parameters (Imeasuring. Bexternal. Number of layers, T). The measurement results confirmed the conducting mechanism theory in the material. A percolation structure model was built and is described. Finally, some fundamental advantages and problems of the process are discussed and the high‐frequency electric field sensor realised is described.

Specially formulated frit materials have been applied in thick film superconductors similar to the standard thick film materials in order to achieve processing parameters closely compatible with conventional thick film technology and alumina substrates. The applied frits have improved the adhesion and superconductor properties at the same time due to a superconductor bridge formation between the grains. Both YBCO and BSCCO systems have been analyzed. The results are promising.

‘The Choice between Chip and Wire and High Density Surface Mount Packages (MCM‐X, COB, etc.)’ was the title of the above event. One of a regular series held by ISHM‐France, this technical seminar was attended by over 100 members and non‐members of ISHM who were eager to hear of the latest developments in the field of multichip modules. The eight papers presented are summarised below:

‘Soldering and Cleaning in Electronics’ international conference, including an exposition, took place in Brno on 12–13 October 1993. The conference was organised by SMT‐Info, together with the ISHM‐Czech and Slovak Chapter. The purpose of this common action was to bring together the professionals in surface mount technology and thick film technology. In the framework of the conference, in which 130 home and foreign delegates participated, the annual meeting of the ISHM‐Czech and Slovak Chapter took place.

This paper investigates how outcomes-based performance management (PM) regimes operate in the partnerships known as social impact bonds (SIBs), which bring together partners from the public, private and third sectors. The findings are analysed in the light of the different cultural world views of the partners.

Published evaluations of 25 UK SIBs were analysed by a qualitative multiple case study approach. This study of secondary sources permitted the analysis of a wide range of SIB partnerships from near contemporary accounts.

Outcomes frameworks led to rigorous PM regimes that brought the cultural differences between partners into focus. While partnerships benefitted from the variety of viewpoints and expertise, the differences in outlook simultaneously led to strains and tensions. In order to mitigate such tensions, some stakeholders conformed to the outlooks of others.

The need to achieve a predefined set of payable outcomes embeds a “linear” view of intervention and effect on the SIB partners and a performance regime in which some partners dominate. In designing accountability systems for partnerships such as SIBs, commissioners should consider how the performance regime will affect the interests of all stakeholders.

This study adds to the cultural theory literature which has rarely considered three-way partnerships embodying hierarchical, individualist and egalitarian world views and how performance regimes operate in such partnerships. Three-way partnerships are thought to be rare and short-lived, but this empirical study shows that they can be successful albeit over a predefined lifespan.

This article focuses on the consequences of having FraX‐E, the rare but well recognised variant of fragile X syndrome. The authors provide some background on the condition and report on recent research and evidence. Three case reports are outlined and the specific behavioural aspects of the syndrome are considered. The authors argue that it is important that the behavioural phenotype for FraX‐E is clearly identified and defined in order to give those with the condition relevant psychological and educational support in the future.

This paper aims to directly test the assertion by proponents of executive stock option repricing that repricing leads to increased management retention. Previous studies find either no effect or decreased retention following stock price repricing. This paper uses a more precise research design to re-examine the relationship between stock option retention and management retention.

The authors use an empirical methodology and construct a sample of 158 firms and 201 repricing events, and a control sample of 201 non-repricing firms. They then examine executive turnover in the four years following the stock option repricing event.

It was found that, consistent with agency theory, stock option repricing actually results in greater executive retention. Specifically, CEO retention is significantly greater for repricing firms relative to non-repricing firms for up to three years following the repricing date, and non-CEO executive retention is significantly greater for two years.

Firms continue to restructure management through stock option repricing. However, recent option repricing has been undertaken during a period when the economy is in decline, making it is difficult to disentangle effects of option repricing on management retention. Hence, this paper uses repricing data from an earlier period, from 1992-1997, when the economy was good.

Many firms argue that when stock options are out-of-the-money and managerial talent is in demand, repricing executive stock options is necessary to retain managers. Previous studies find contradictory or no support for this view. Using a much more precise methodology, this paper shows that firms do retain managers when they reprice their options compared to when they do not.

This paper aims to propose an integrated protection scheme for converters of a low-power, low-cost photovoltaic system. Power electronic converters use a variety of methods to limit overload and fault current. The use of insulated and non-insulated sensors along with additional circuits to detect and limit fault current can cause current to be limited or completely cut off before damage to semiconductor devices. In addition, fuses that have slower performance are used as backup for any type of protection.

First, all the candidate points for protection are investigated. In this paper, after examining the performance of glass fuses as linear resistors, they are used as a current feedback element. A simple, isolated and reliable circuit for fault detection at various points of the system has been proposed that can be implemented and operated in single shot or auto-reclose operating mode.

The experimental results of this circuit on a dc/dc converter and an H-bridge inverter show that it can cut off all instantaneous short circuit errors in less than 50 µs and prevent damage to the semiconductor switch.

In low-cost and low-power converters, it is usually not cost-effective to use complex and expensive devices. For this reason, these converters are more vulnerable to faults. On the other hand, in complex systems such as photovoltaics, several converters are used simultaneously in different parts, and the occurrence of a fault in each of them causes the whole system to fail.

This study aims to explore the impact of the use of the WeChat Mini Program by luxury brands on consumers' fashion impulsive purchasing and brand loyalty.

The stimulus–organism–response (S–O–R) model is adapted to construct a model (i.e. stimulus: patron status, informativeness and entertainment; organism: perceived enjoyment and perceived usefulness; responses: impulse buying behavior and luxury brand loyalty). An online survey was conducted by 200 Chinese participants who experienced WeChat Mini Program and luxury brand purchase.

The results indicate that luxury consumption related factors, task-related factors and mood-related factors in WeChat Mini Program have positive effects on consumers' impulsive purchasing behavior through perceived enjoyment and perceived usefulness.

This study provides a new understanding about factors influencing consumers' behaviors and brand loyalty in WeChat Mini Program.

The mobile social platform has been considered as an advanced tool for advertising. As the most popular mobile social media used by over 1 bn monthly active Chinese users—WeChat, little research attention has been attracted by researchers. To stress the WeChat Mini Program's role in the S-commerce background can fill the gap between the literature of the utilization of new marketing tools in retailing, marketing and the whole fashion industry. In terms of marketing management, the paper conducted research that participated by new generation consumers and offers some practical managerial implications for brands, retailers and marketers to generate new business models and marketing strategies.