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This paper describes the elastic state of heterogenous materials within the framework of the mechanics of heterogenous continua. Failure condition of a two‐phase material is formulated and the dependencies of hydroabrasive and cavitational wear of steel on the spacing of the inclusions of martensite in steels with ferritic‐cementitic and austenitic structures are established. The dependence of the wear resistance criterion on the stress, distribution density and austenitic grain diameter is also presented. The results made it possible to develop an effective structure‐energy model to describe wear processes of materials and coatings.

The purpose of this paper is to analyse the phenomenon of wear resistance of some metals and alloys with allowance for the stiffness of their stressed‐strained state of the surface.

An original criterion (in the form of limiting deformation power density) of wear resistance on the basis of structure‐energy theory of friction is proposed. Experimental data on the wear resistance are generalized using the criterion for the conditions of hydroabrasive, impact‐abrasive and cavitational erosion.

The dependence of the criterion on stiffness coefficient of the stressed‐strained state of the surface of materials is demonstrated. It has been found that an increase of the stiffness results in the reduction in the energy capacity and wear resistance of both metals and alloys investigated.

The structure‐energy criterion can be used for choosing suitable frictional materials and to compare and estimate the theoretical considerations with experimental data.

The proposed structure‐energy approach allows systemizing the results of our analyses and the experimental data.

The purpose of this paper is to focus on social representations of Warsaw (Poland) as a tourist destination of 210 first visitors from seven EU and extra-EU countries (France, Germany, Italy, Spain, Poland, United Kingdom and United States of America) interviewed before and after their visit. In the framework of the social representations theory, the “cultural baggage”, rooted in the collective and social memory, forms anticipatory representations of the imagined places that may undergo transformations after the visit. How does this transformation occur?

The authors consider the transformation of social representations as detected by means of a self-administered questionnaire that comprised the following tools: scales to measure the strength of various information sources about Warsaw (school, literature, movies, songs, internet, press, tourist guides, documentaries, interpersonal communication and other); associative networks (de Rosa, 2002) with the stimulus word “Warsaw”; a list of adjectives describing the city and its centre, as well as a list of the most important places in Warsaw. The questionnaires were coded to ensure anonymity of participants while enabling the researcher to administer them for the second time (after the visit). According to the modelling approach to social representations (de Rosa, 2013a), the research was guided by three related hypotheses concerning transformation of social representations of Warsaw.

The results confirmed the hypotheses of potential changes in the representations that shift the focus from Warsaw as “communist” to “green” capital city, and of the role of the Polish language as a “communicative barrier” for recalling specific names of city-places after their visit.

Social representations exist in people’s minds, and they include images that are further interpreted (Howarth, 2011). Especially when visitors are asked about places, it is likely that they recall specific images, but not their names. Since the questionnaires required them to write down the answers, words often did not correspond to the volatile and dynamic images that the human mind creates. In spite of recalling a specific park or fountain, participants resorted to general categories and simply wrote “park” or “fountain”. However, this limitation is familiar to the majority of social psychological researchers and very difficult, if not impossible, to overcome. The new research directions launched to integrate the research line of field studies with investigations based on new media offer complementary insights and opportunities (de Rosa and Bocci, 2014).

Destination branding has numerous practical implications. According to Ekinci and Hosany (2006), developing efficient communication methods is crucial to launching a distinctive and attractive destination personality. Hosany et al. (2006) have demonstrated that personality traits are ubiquitous in consumers’ evaluations of tourism destinations and therefore promotional campaigns should emphasize the distinctive personality of tourism destinations, based on the emotional components of destination image. European capital cities compete for visitors in the mature and saturated market, where brand strength is positively related to tourism intensity (Mikulić et al., 2016).

Examining how social representations of a city are transformed by the visit from the perspective of the supra-disciplinary theory of Moscovici constitutes an original way to link imagery and tourist practices. The major cultural issues, such as history, language, art and traditions affect the theory and practice of urban tourism. For the first time, this theoretical framework is being used in case of a post-communist European destination such as Warsaw.

The purpose of this paper is to describe a computer‐assisted learning experience in operations management (OM) higher education that entailed the development of interactive learning software, its evaluation in an experimental environment and the formal analysis of the teaching method's influence on student perceptions.

The software design follows the constructivist focus based on widely‐accepted educational technology principles. Objective tests of knowledge and subjective appraisal of the learning process were used in the experiment to compare two educational scenarios (computer‐assisted learning and on‐site class). Students' perceptions of the software's technical and teaching features are also analyzed.

The study shows that the teaching method can significantly affect students' perceptions of the learning process. The findings also confirm the pedagogical effectiveness of the software that was designed and that information communication technologies (ICT)‐based methods are an alternative to traditional methods used in OM education.

The experiment involved strict control over various potential threats to validity. From a statistical point‐of‐view, the conclusions can only be generalized in the population analyzed. Nevertheless, the features of the software and the student profile allow the main conclusions to be generalized to other OM environments.

The use and evaluation of interactive software in OM educational environments are reflected on, with emphasis on the influence that the teaching methodology has on students' attitudes to the learning process. It is of interest for researchers interested in improving teaching through the use of ICT.

There are very few studies on interactive self‐learning software for OM and its effects on student perceptions. This paper is a new contribution to this field.

The purpose of this paper is to investigate COVID-19 as a super crisis in the design and management of places.

This theory-driven work outlines why and how, by treating COVID-19 as a super crisis, the immunological view rises in priority and swiftly ushers in short- and long-term implications for space design and place management.

First, this paper looks at the short-term impact of COVID-19 upon space and place management in addressing how porous bubbling, stippling and flexible curtaining respond to immediate retrofitting needs during the pandemic. Using the concept of COVID-19-induced collective trauma, this paper draws attention to health-care facilities, schools, workplaces, commercial buildings and public outdoor spaces. These sites require short-term improvisation in place and space design and will, where the collective trauma of COVID-19 leaves strong traces, require long-term redesign and rethinking.

As a super crisis, COVID-19 generates contradictions in the existing trend in space and place studies from the notion of space and place as a container to one focusing on “flow.” A focus on flow highlights a focus on space and place as adaptable to changes in flow, especially as augmented and mediated by technology.

This treatment of COVID-19 as a super crisis is intended to stimulate the design and management of spaces and places in the post-COVID-19 period.