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Synthesising an individual–opportunity nexus model, this research aims to develop a model of early internationalisation by integrating international competitiveness readiness, entrepreneurial motives and home country institutions and empirically assesses this model using a multi-level estimate design.

Drawing upon a global context comprising 79,402 entrepreneurs from 87 countries, this research applies a Heckman 2-step model together with a multi-level approach that allows to deal with self-selection bias and to take the hierarchical nature of the data into account.

The findings show that early internationalisation is significantly affected by entrepreneurs' international competitiveness readiness and this association is moderated by entrepreneurial motives. In addition, the findings demonstrate that the individual-level effects are further modified by the quality of country-level governance.

The research findings have significant implications and value for policy-makers who are aiming to stimulate the rate of early internationalisation by influencing the quality of governance.

The results contribute to the development of knowledge and theoretical bases in international entrepreneurship (IE). The results provide a multi-level view on the relationships between entrepreneurs and the internationalisation of entrepreneurs' firms from an integrative perspective, thereby complementing the perspective of international competitiveness readiness that primarily focuses on the effects of inherent resources and capabilities.

The purposes of this research are to examine how individuals' cognition is related to the rate of entrepreneurial start-ups and how this relationship can be modified by three institutional pillars.

Drawing upon a multilevel analysis and a global context comprising 67 countries, cross-level analyses are performed to assess the joint effects of entrepreneurial cognition and institutions on the rate of entrepreneurial start-ups.

The findings confirm the role of entrepreneurial cognition (i.e. self-efficacy, risk attitude and opportunity perception) in individuals' decisions to start new businesses and reveal how this relationship can be diversely influenced by country-level institutional pillars.

This paper could be useful for designing policies to promote entrepreneurial activity through institutions in different countries.

The results contribute to the development of theoretical and knowledge bases by offering a multilevel perspective on how entrepreneurial cognition and institutional environments operate as interacting determinants that influence entrepreneurship.

The shape of a product plays a crucial role in shaping consumer behavior. Despite the voluminous research on factors influencing consumers’ shape preferences, there remains a limited understanding of how the busy mindset, a mentality increasingly emphasized by marketing campaigns, works. This study aims to fill this gap by exploring the relationship between a busy mindset and the preference for angular-shaped versus circular-shaped products and brand logos.

This research consists of seven experimental studies using various shape stimuli, distinct manipulations of busy mindset, different assessments of shape preference and samples drawn from multiple countries.

The findings reveal that a busy mindset leads to a preference for angular shapes over circular ones by amplifying the need for uniqueness. In addition, these effects are attenuated when products are scarce.

This research represents one of the pioneering efforts to study the role of a busy mindset on consumers’ aesthetic preferences. Beyond yielding insights for practitioners into visual marketing, this research contributes to the theories on the busy mindset and shape preference.

The purpose of this paper is to study conducted electromagnetic interference (EMI) of the high-low voltage DC/DC converter based on GaN high-electron-mobility transistors (HEMTs) in electric vehicle, and design EMI filters to suppress the conducted EMI.

The conducted EMI propagation model is established through simulation and analysis studying the influences of parasitic parameters, operation mode, output power and near-field capacitive coupling effects on conducted EMI of the DC/DC converter and comparing the suppression effects of EMI filters with different topologies to select the best EMI filter.

It is shown that parasitic parameters, operation mode, output power and near-field capacitive coupling effects can affect the conducted EMI of the DC/DC converter, and EMI filters of the CLC topology can effectively suppress the conducted EMI below the limit of CISPR 25.

Analysis of conducted EMI and design of EMI filters greatly facilitate further explorations and studies on EMI problems of the high-low voltage DC/DC converter based on GaN HEMTs.

The purpose of this paper is to investigate the effects of nano‐titanium dioxide and nano‐silicon dioxide particles on the mechanical and antimicrobial properties of denture base resin.

Nano‐titanium dioxide and nano‐silicon dioxide particles were introduced to heat‐curing denture base resin to prepare composites. Electronic universal testing machine and friction tester were used to test tensile strength and frictional resistance properties of the samples prepared, respectively; also, film adhesion method was used to test the in vitro antimicrobial activity against Candida albicans and Streptococcus mutans.

Addition of nano‐titanium dioxide particles could improve the antimicrobial property of denture base resin, and addition of nano‐silicon dioxide particles could improve the tensile strength and frictional resistance of denture base resin. Mixture of the two nano‐particles, at a certain ratio, could improve the tensile strength, frictional resistance and antimicrobial property of denture base resin to a certain extent.

Nano‐titanium dioxide and nano‐silicon dioxide denture base resin composites were obtained. The mechanical and antimicrobial properties of the composites were improved compared to the raw denture base resin.

Nano‐titanium dioxide and nano‐silicon dioxide denture base resin composites with excellent performance could be obtained. Longer service life, greater hardness and clearness helped improve the patients' quality of life. Limited work with respect to the improved denture base resin was performed, which could form the theme of a future study. The outcomes of the research reported here set a new milestone in the field of denture base resin.