Локализация пластического сдвига при ударном нагружении

Приведены результаты экспериментальных исследований локализации сдвига в КЭП-образцах при ударном нагружении. По данным металлографических исследований материала в области пластического течения получено характерное распределение величины деформации поперек полосы сдвига.КЕП-зразках при ударному навантаженні. За даними металографічних досліджень матеріалу в області пластичної течії одержано характерний розподіл деформації поперек смуги зсуву.We present test results on shear localization in disk-shaped (HAT) specimens under impact loading conditions. Based on the metallographic analysis of the material in the plastic flow zone, we obtained the strain distribution across the shear slip

Attempted suicide and suicide of young Turkish women in Europe and Turkey:A systematic literature review of characteristics and precipitating factors

BACKGROUND: The increased risk of suicidal behaviour among Turkish women living in Europe and Turkey is a serious public health problem. This study compares and synthesises the empirical evidence of demographic, social, psychological and interpersonal characteristics and precipitating factors in the suicides and attempted suicides of Turkish women in Europe and Turkey. METHODS: We systematically searched eight databases (PsycINFO, PubMed, Med Line, Web of Science, Smart Cat, Safety Lit, BASE and Ulakbim), using search terms in English, Turkish, German and Dutch, as well as the reference lists of the retrieved papers. We extracted data on countries/regions, population characteristics, sample characteristics, recruitment, method of data collection, type of suicidal behaviour (suicide or attempted suicide) and precipitating factors and characteristics. The results were qualitatively synthesised. RESULTS: We retrieved nine studies on attempted suicide in Europe (from Germany, Switzerland and the Netherlands), 17 studies on attempted suicide in Turkey and 10 studies on suicide in Turkey (36 in total). Overall, we found similar precipitating factors and characteristics of attempted suicide and suicide in Turkey and Europe, including socio-demographic factors (young age and not being enrolled in the labour market), poverty and, to some extent, mental illness. Moreover, conflicts with family or spouses and violence against women, including so-called honour violence, were particularly common for women living in or originating from traditional areas in Turkey. CONCLUSION: The framework of intersectionality is relevant to understanding our results, because structural inequalities in gender roles, gender role expectations as well as power imbalances among socio-economic classes collectively impact the suicidal behaviour of Turkish women. Moreover, the importance of violence against women points to the cultural continuity of the patriarchal and oppressive structures of Europe and Turkey. Suicide prevention efforts should address cultural attitudes underlying violence against women and girls through community education programmes, cultural and gender-sensitive care provision and jurisdiction

Suicide and attempted suicide of young people in Amsterdam

Introduction: At the end of 2016, suicide among adolescents has been on the rise with 70% in Dutch youth. This finding highlights the importance of collecting relevant information concerning adolescent suicide. In this study, we will take a first step in collecting knowledge prior to this rise regarding the background, characteristics and precipitating factors of suicidality in Dutch youth in Amsterdam in the period between 19968 and 2010. Methods: Two types of files were collected; for suicides in Amsterdam, coroners’ files were collected (19968-2010). For suicide attempts, we collected medical files from the emergency room of a hospital in Amsterdam (2003-2006). Results: Regarding suicides of young people, we mainly see young men between the ages of 18-23 who mainly died through hanging, jumping from height or in front of a train. Few other factors were recorded in the coroners’ files. Regarding suicide attempts, five themes were visible, 1) Stressful life events, particularly sexual abuse and parental divorce 2) psychiatric disorders, especially depression and borderline personality 3) demographic and social factors; older adolescents and girls were strongly overrepresented, and a third of all attempters had a non-Dutch origin 4) trigger factors consisting of conflicts and disputes with parents or a partner and 5) previous self-harm or attempts were frequently noted. Discussion and Conclusion: This study provides a very first indication of relevant factors that could assist in explaining the recent rise in Dutch adolescent suicide and guide prevention efforts. To generate more specific epidemiological knowledge, and in order to formulate prevention strategies more optimal data-gathering systems are needed that systematically take a wide range of known risk factors into account

The ethnic identity complexity of transculturally placed foster youth in the Netherlands

This study addresses the ethnic identity of transculturally placed adolescent foster youth with ethnic minority backgrounds in The Netherlands. We conducted qualitative interviews to provide insight into the lifeworlds of twenty foster youth. We found that constructing an ethnic identity was complex for these ethnic minority foster youth. The foster youth showed ethnic identity ambivalence, and contradictory messages about ethnicity by birth parents, foster parents, peers, and strangers contributed to this process. The foster youth also sometimes distanced themselves from their ethnic minority background whereby the intersection of their ethnic minority background and the background of being a foster child could play a role. Additionally, some foster youth told stories of longing for and belonging to their ethnic minority background, especially when birth parents and foster parents cooperated in ethnic socialization. Overall, contradictory and intersecting messages provided by birth parents, foster parents, and peers influenced the extent to which they experienced their ethnic identity as complex. Therefore, future studies should be conducted to provide more insight into these processes, so foster care agencies and foster parents can be trained to fulfill a more guiding role in the ethnic identity development of transculturally placed foster youth

Perceived discrimination against Dutch Muslim youths in the school context and its relation with externalising behavior

The role of the source of discrimination in relation to minority Muslim youths’ psychosocial well-being has received remarkably little attention in the post-9/11 climate. We have examined one of the aspects of psychosocial well-being that is given prominent attention in the media and public discourse, namely externalising behaviour. The article reports whether perceived discrimination by four sources (school peers and teachers, peers, and adults outside the school) is related to externalising behaviour. Links between perceived discrimination sources and externalising behaviour among Dutch Muslim youths (n = 308, ages 14–18) were examined through surveys. The quantitative findings guided our qualitative analyses of interviews with 10 Muslim Dutch youths on their accounts of discrimination in the school context. When comparing different discrimination sources, only teacher discrimination was found to predict externalising behaviour significantly (explaining 15% of the variance). The qualitative follow-up illustrated the significance of teacher discrimination: Some Muslim youths felt that their teachers held back their school progress, while others reported receiving insults from teachers about their parents’ native country and their religion. We argue that students’ perceived powerlessness within the teacher-student relationship deserves further attention, as some Dutch Muslim youths reported painful experiences, with perceived teacher discrimination linked to higher levels of externalising behaviour

The ethnic identity of transracially placed foster children with an ethnic minority background:A systematic literature review

BackgroundEthnic minority foster children are frequently placed in families with ethnic majority backgrounds. In the international literature these placements are most commonly called transracial placements.AimsWith this study, we aim to obtain an encompassing view of the empirical scientific literature on how transracial placements may affect the ethnic identity of foster children.Materials and methodsTo gain insight into the ethnic identity of transracially placed foster children and the way they are ethnically socialized, we conducted a systematic literature review. We thereby followed the guidelines of the PRISMA statement.ResultsTransracially placed foster children may experience higher fluctuations in their racial/ ethnic identity over time than adolescents with a minority background in the general population. They also seem to be prone to experience disconnection from, or on the contrary, connection with the birth network; and some transracially placed foster children struggle with societal messages they receive about minority ethnicity and race. They may have an increased awareness of their minority ethnic background because of different physical appearances between themselves and the foster family. Foster parents can play a pivotal role in these processes, since culturally competent foster parents may guide foster children in their ethnic identity development by being open towards children’s cultural minority background as well as being self‐reflective regarding their own cultural values and beliefs.DiscussionThe ethnic development of transracially placed foster children seems to be influenced by intersecting mechanisms of being in foster care and having a minority ethnicity. Although the selected articles assume that foster parents impact the ethnic identities of their ethnic minority foster children, none of them measured the impact of foster parents’ skills and knowledge on foster children’ s ethnic identity development directly.ConclusionBeing transracially placed impacts the ethnic identity of foster children. Foster parents need to be cultural competent to encourage their foster children’s ethnic identity development

Hanging Out in the Past: Looking for Trouble or Romance? An Exploration of the Practice and Meaning of Hanging Out for Young Dutch People in 1930–60

Young people’s ‘hanging out’ has had different meanings in the recent and distant past in various countries and cultures, including delinquency or a common social phenomenon. Although there is evidence for hanging out as social behaviour in various countries, Dutch research on hanging out as a common social phenomenon is scarce. This article retrospectively explores the practice and meaning of hanging out for young people in the Netherlands between 1930 and 1960. Semi-structured qualitative interviews (n = 60) were analysed using the Constant Comparative Method, resulting in three key themes: familiarity, features and the meanings assigned to hanging out. Results indicate that hanging out was practised and known by most respondents, and included particular features (time, location, gender and routines). Meet, flirt with and date other young people was the most frequently mentioned meaning associated with hanging out. Accordingly, hanging out can indeed be considered to have been a common social phenomenon