In this paper, we describe secure gateway for Internet of Things (IoT) devices with internal AAA mechanism, implemented to connect IoT sensors with Internet users. Secure gateway described in this paper allows to (1) authenticate each connected device, (2) authorise connection or reconguration performed by the device and (3) account each action. The same applies to Internet users who want to connect, download data from or upload data to an IoT device. Secure Gateway with internal AAA mechanism could be used in Smart Cities environments and in other IoT deployments where security is a critical concern. The mechanism presented in this paper is a new concept and has been practically validated in Polish national research network PL-LAB2020.

In studying contemporary transformations of social relations and family life, researchers and social theorists have been focused on the increased diversity of forms of bonding, coupling and other interpersonal connections. When single people are discussed, either it is to emphasize the disintegration of their ties and the crisis of the family, or their single life is considered as an identity choice. The aim of this text is to look at the experience of singleness not by choice among contemporary corporate employees in Poland and to try to set this experience against the background of a broader social reality, especially the reality of professional work. The text also examines the relationship between relational forms (including being single) and the social system in late capitalism. The experiences of people who are not single by choice are discussed and contrasting variants for people whose single situation is associated with low interpersonal skills and for those with an interactional proficiency are distinguished. In the conclusion, the authors are looking for patterns of connection between being unwillingly single and operating on the late capitalist labour market.

The aim of the study was to develop an assessment methodology for the temperature of the surface of the friction pair during the braking for mine hoists. During the braking process, the work of friction is transformed into heat at the level of friction surfaces, and in case high temperatures are reached, the friction coefficient is influenced negatively, thus the risk of braking failure exists. In the first part of the study we measured the temperature of the friction surfaces for a particular case of hoist in real braking conditions. In the second part of the study is presented a theoretical model for the calculation of the temperatures resulted in the braking process for the hoist equipped with shoe brakes. The theoretical model for calculation was simulated numerically for a particular case in real braking conditions. Based on the conclusions resulted after the study, a series of hypotheses and recommendations for adjusting the control of the process parameters have been given out, in order to avoid the excessive heating of the brakes of the hoists and, respectively, their improved safety, maintenance and availability.

Cheerleading is a new sport, practiced in 110 nations; since 2016 enjoys provisional Olympic status. Its leaders claim that it is a “happy” sport, but research on its psychological effects is lacking. In this field-study we examined core-affect, positive-affect, and negative-affect in 65 cheerleaders before, during, after, and one-hour after a cheerleading training. Core-affect was more positive during and immediately after training, but it tapered off one hour following the training when feeling states were still more positive than at baseline. Negative-affect declined linearly from baseline to one-hour following training when it became significantly lower than its previous values. Positive-affect showed quadratic dynamics, in parallel with arousal, being higher during and immediately after training than during baseline, or one-hour after training. These results demonstrate for the first time that cheerleading is a “happy” sport, which apart from the skill-development also yields positive psychological emotions both during and after training.

The research reported in this paper is a continuation of the experimentation on the articulation of the Polish /r/ in the intervocalic and postconsonantal positions (cf. Stolarski 2013a and 2013b, respectively). According to Biedrzycki (1978: 83-84), in these two phonetic contexts the rhotic happens to be articulated as a tap. Such an assumption stands in contrast to the widely accepted view that the Polish rhotic is generally realised as a trill. The results reported in Stolarski (2013a) and (2013b) amply prove that in these two environments tapping of the Polish /r/ is extremely frequent. In this article the articulation of the Polish rhotic is examined in the preconsonantal and word-final phonetic contexts. Biedrzycki’s account suggests that in these environments /r/ should be realised as a trill. The results obtained in the current research, however, indicate that even in such contexts the rhotic is mostly tapped. The conclusion which must be drawn from these findings is that the basic allophone of the Polish /r/ is the tap, and not the commonly assumed trill.

This paper analyses diaspora advocacy on behalf of Ukraine as practiced by a particular diaspora group, Ukrainian Canadians, in a period of high volatility in Ukraine: from the EuroMaidan protests to the Russian invasion of Eastern Ukraine. This article seeks to add to the debate on how conflict in the homeland affects a diaspora’s mobilisation and advocacy patterns. I argue that the Maidan and the war played an important role not only in mobilising and uniting disparate diaspora communities in Canada but also in producing new advocacy strategies and increasing the diaspora’s political visibility. The paper begins by mapping out the diaspora players engaged in pro-Ukraine advocacy in Canada. It is followed by an analysis of the diaspora’s patterns of mobilisation and a discussion of actual advocacy outcomes. The second part of the paper inves-tigates successes in the diaspora’s post-Maidan communication strategies. Evidence indicates that the dias-pora’s advocacy from Canada not only brought much-needed assistance to Ukraine but also contributed to strengthening its own image as an influential player. Finally, the paper suggests that political events in the homeland can serve as a mobilising factor but produce effective advocacy only when a diaspora has already achieved a high level of organisational capacity and created well-established channels via which to lobby for homeland interests.

This article deals with migrants’ experiences of precarious working conditions in the cleaning and con-struction industries in the Danish labour market as seen from their perspective. The experiences are retained through biographical narrative interviews with migrant workers from Central and Eastern Europe and are used to gain an understanding of the concrete strategies they apply when coping with their short-term contracts, demanding working hours, risk of unemployment and other insecurities. Mi-grants’ experiences of precarity and insecurity in their work is confirmed, to some degree, in numerous research studies. However, the resistance and strategies expressed by the migrant workers in their nar-ratives show that they have also developed specific ways to cope with this precarity. The article con-tributes to a new understanding of migrants’ responses to precarity in which they engage their social and cultural resources to cope with the labour market conditions they face in Denmark.

Research has given increasing recognition to the important role that children play in family decisions to migrate and the significant impact of migration on family relationships. At the same time, the role of emotional labour involved in feeling ‘at home’ and the sense of ontological security and everyday be-longing that families develop post-migration can benefit from further exploration. Drawing on data collected with Eastern European migrant families in Scotland, this article explores intergenerational understandings of (in)securities by comparing parents’ and children’s views on their lives post-migra-tion. It shows that, while adults constructed family security around notions of stable employment and potential for a better future, children reflected more on the emotional and ontological insecurities which families experienced. Family relationships are often destabilised by migration, which can lead to long-term or permanent insecurities such as family disintegration and the loss of a sense of recognition and be-longing. The article reflects on the ways in which insecurities of the past are transformed, but are un-likely to be resolved, by migration to a new country. It does this by grounding the analysis in young people’s own understandings of security and by examining how their narratives challenge idealised adult expectations of family security and stability post-migration. It also shows that young people’s involvement in migration research brings an important perspective to the family dynamics post-migra-tion, challenging adult-centred constructs.

This paper addresses the issue of language and belonging in the transnational context of migration. It draws on two research projects with first-generation children of Polish labour migrants in Scotland. The paper examines the role that language plays in fostering multiple ways of being and belonging, and in understanding how children make sense of their identity. It suggests that language should take a more central place in debates about cultural connectivity and transnational migration. Findings point to the need for a more holistic approach to supporting migrant children, including the explicit recognition of family cultural and language capital in the host society.