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The study aims to assess the COVID-19 event in three European countries (Germany, Italy and the UK) by investigating the quality of their performance management of it.

Pragmatic constructivism (PC) is employed as a lens through which the performance management of each country can be examined and compared over a period encompassing the first wave of COVID-19.

Official statistics show that one of the countries has a significantly lower death rate. It developed and operated a more detailed and precise system of performance management. From the perspective of PC, this system supported efforts to build a functioning reality construction integrating facts, possibilities, values and communication.

The evaluation of different national approaches to the performance management of the COVID-19 reality is novel to the literature on management accounting. PC is used as a diagnostic tool to pinpoint strengths and weaknesses of the performance management of public sector activities in different countries.

This paper introduces the second part of a AAAJ special issue on accounting, accountability and management during the COVID-19 emergency. The authors analyse the themes that emerge from the second part of the special issue, which allows us to identify the diverse accounting and accountability practices across different geographical and organisational contexts. The authors also provide an overall picture of the contributions of the special issue, with insights into avenues of future research.

Building on the first part of the AAAJ special issue, the paper draws together and identifies additional emerging themes related to research into the COVID-19 pandemic and how it impacts accounting, accountability and management practices. The authors reflect on the contributions of the special issue to the interdisciplinary accounting research project.

The authors identify two macro-themes and outline their contributions to the accounting literature. The first deals with the changes and dangers of accounting and accountability practices during the pandemic. The second considers accountability practices in a broader sense, including reporting, disclosure and rhetorical practices in the management of COVID-19.

The paper shows the pervasive role of accounting and accountability in the unprecedented and indiscriminate health crisis of COVID-19. It highlights the important role of special issues in producing timely research that responds to unfolding events.

This paper contributes to current debates on the roles of accounting and accountability during COVID-19 by drawing together the themes of the special issue and identifying future interdisciplinary accounting research on the pandemic's aftermath.

The present study provides a comprehensive review of the advancements in five active heating modes for cold-proof clothing as of 2021. It aims to evaluate the current state of research for each heating mode and identify their limitations. Further, the study provides insights into the optimization of intelligent temperature control algorithms and design considerations for intelligent cold-proof clothing.

This article presents a classification of active heating systems based on five different heating principles: electric heating system, solar heating system, phase-change material (PCM) heating system, chemical heating system and fluid/air heating system. The systems are analyzed and evaluated in terms of heating principle, research advancement, scientific challenges and application potential in the field of cold-proof clothing.

The rational utilization of active heating modes enhances the thermal efficiency of cold-proof clothing, resulting in enhanced cold-resistance and reduced volume and weight. Despite progress in the development of the five prevalent heating modes, particularly with regard to the improvement and advancement of heating materials, the current integration of heating systems with cold-proof clothing is limited to the torso and limbs, lacking consideration of the thermal physiological requirements of the human body. Additionally, the heating modes of each system tend to be uniform and lack differentiation to meet the varying cold protection needs of various body parts.

The effective application of multiple heating modes helps the human body to maintain a constant body temperature and thermal equilibrium in a cold environment. The research of heating mode is the basis for realizing the temperature control of cold-proof clothing and provides an effective guarantee for the future development of the intelligent algorithms for temperature control of non-uniform heating of body segments.

The integration of multiple heating modes ensures the maintenance of a constant body temperature and thermal balance for the wearer in cold environments. The research of heating modes forms the foundation for the temperature regulation of cold-proof clothing and lays the groundwork for the development of intelligent algorithms for non-uniform heating control of different body segments.

The present article systematically reviews five active heating modes suitable for use in cold-proof clothing and offers guidance for the selection of heating systems in future smart cold-proof clothing. Furthermore, the findings of this research provide a basis for future research on non-uniform heating modes that are aligned with the thermal physiological needs of the human body, thus contributing to the development of cold-proof clothing that is better suited to meet the thermal needs of the human body.