@misc{BlumeRattayHoffmannetal., author = {Blume, Miriam and Rattay, Petra and Hoffmann, Stephanie and Spallek, Jacob and Sander, Lydia and Herr, Raphael and Richter, Matthias and Moor, Irene and Dragano, Nico and Pischke, Claudia R. and Iashchenko, Iryna and H{\"o}vener, Claudia and Wachtler, Benjamin}, title = {Health Inequalities in Children and Adolescents: A Scoping Review of the Mediating and Moderating Effects of Family Characteristics}, series = {International Journal of Environmental Research and Public Health}, volume = {18}, journal = {International Journal of Environmental Research and Public Health}, number = {15}, issn = {1660-4601}, doi = {10.3390/ijerph18157739}, pages = {33}, abstract = {This scoping review systematically mapped evidence of the mediating and moderating effects of family characteristics on health inequalities in school-aged children and adolescents (6-18 years) in countries with developed economies in Europe and North America. We conducted a systematic scoping review following the PRISMA extension for Scoping Reviews recommendations. We searched the PubMed, PsycINFO and Scopus databases. Two reviewers independently screened titles, abstracts and full texts. Evidence was synthesized narratively. Of the 12,403 records initially identified, 50 articles were included in the synthesis. The included studies were conducted in the United States (n = 27), Europe (n = 18), Canada (n = 3), or in multiple countries combined (n = 2). We found that mental health was the most frequently assessed health outcome. The included studies reported that different family characteristics mediated or moderated health inequalities. Parental mental health, parenting practices, and parent-child-relationships were most frequently examined, and were found to be important mediating or moderating factors. In addition, family conflict and distress were relevant family characteristics. Future research should integrate additional health outcomes besides mental health, and attempt to integrate the complexity of families. The family characteristics identified in this review represent potential starting points for reducing health inequalities in childhood and adolescence.}, language = {en} } @misc{MeyerBorislavovEckertetal., author = {Meyer, Werner and Borislavov, Borislav and Eckert, Friedrich and Richter, Christian and R{\"o}mer, Ronald and Beim Graben, Peter and Huber, Markus and Wolff, Matthias}, title = {Formalisierung und Implementierung einer adaptiven kognitiven Architektur unter Verwendung von Strukturdiagrammen}, series = {Elektronische Sprachsignalverarbeitung 2021 : Tagungsband der 32. Konferenz Berlin, 3.-5. M{\"a}rz 2021}, journal = {Elektronische Sprachsignalverarbeitung 2021 : Tagungsband der 32. Konferenz Berlin, 3.-5. M{\"a}rz 2021}, editor = {Hillmann, Stefan and Weiss, Benjamin and Michael, Thilo and M{\"o}ller, Sebastian}, publisher = {TUDpress}, address = {Dresden}, isbn = {978-3-959082-27-3}, issn = {0940-6832}, pages = {67 -- 76}, abstract = {Das Fachgebiet der Kognitiven Technischen Systeme zeichnet sich durch einen hohen Grad an Interdisziplinarit{\"a}t (z. B. Kenntnisse auf den Gebieten Biologie, Psychologie, Informatik und den Ingenieurwissenschaften) aus. Nach wie vor besteht Bedarf an einer methodischen Darstellung des Fachgebietes, bei der die theoretische Durchdringung von Zusammenh{\"a}ngen zwischen den verschiedenen Wissensgebieten zus{\"a}tzlich durch Anschaulichkeit unterst{\"u}tzt wird. Die vorliegende Arbeit stellt einen Fortschrittsbericht zur Realisierung eines Forschungs- und Experimentiersystems dar, mit dem wir dieses Anliegen unterst{\"u}tzen und {\"u}ber das wir erstmals konzeptionell in [1] berichtet haben. In diesem Beitrag folgen wir einem integrativen Ansatz zur Entwicklung einer kognitiven Architektur, mit der unter Verwendung repr{\"a}sentationaler Datenstrukturen adaptives Verhalten auf verschiedenen Zeitskalen sowie zwei wichtige Verhaltensprogramme f{\"u}r das Probleml{\"o}sen (Objektfindung, Exploration) auf der gemeinsamen Grundlage von Markov-Entscheidungsprozessen umgesetzt werden. Mit einem Kurzbericht zum Entwicklungsstand der physikalischen Experimentierumgebung und einer Zusammenfassung der bislang erreichten Ergebnisse beschließen wir den diesj{\"a}hrigen Beitrag.}, language = {de} } @misc{HerkeMoorWinteretal., author = {Herke, Max and Moor, Irene and Winter, Kristina and Hack, Miriam and Hoffmann, Stephanie and Spallek, Jacob and Hilger-Kolb, Jennifer and Herr, Raphael and Pischke, Claudia R. and Dragano, Nico and Novelli, Anna and Richter, Matthias}, title = {Role of contextual and compositional characteristics of schools for health inequalities in childhood and adolescence: a scoping review}, series = {BMJ Open}, volume = {12}, journal = {BMJ Open}, number = {2}, issn = {2044-6055}, doi = {10.1136/bmjopen-2021-052925}, pages = {16}, abstract = {Objectives: To synthesise the evidence on the role of compositional or contextual characteristics of schools in the association between students' socioeconomic position and their health in primary and secondary education in developed economies. Design: Scoping review. We included studies examining the role of at least one school or class characteristic on students' health inequalities and was published since 1 January 2000, in English or German. We searched PubMed/Medline, Web of Science and Education Resources Information Center. We provided a narrative synthesis and an overview of findings. School characteristics were grouped into five broad categories: school composition, school climate, school policies and organisation, food environment and facilities. Results: Of 8520 records identified, 26 studies were included. Twelve studies found a moderating and 3 a mediating effect. The strongest evidence came from studies examining the moderating effect of school composition, that is, the negative impact of a low individual socioeconomic position on mental health and well-being was aggravated by a low average socioeconomic position of schools. Evidence concerning the role of school climate, school stratification (eg, performance base tracking) and sponsorship, food environment and sport facilities and equipment was generally weak or very weak and mostly based on singular findings. Overall, favourable meso-level characteristics mitigated the negative impact of low individual socioeconomic position on health outcomes. Conclusions: School characteristics affect health inequalities in children and adolescents to some degree, but future research is necessary to strengthen the existing evidence and address under-represented aspects in school characteristics and health outcomes.}, language = {en} } @misc{StrobelAlvaradoChavarinLeszczynskietal., author = {Strobel, Carsten and Alvarado Chavarin, Carlos and Leszczynski, Sebastian and Richter, Karola and Knaut, Martin and Reif, Johanna and V{\"o}lkel, Sandra and Albert, Matthias and Wenger, Christian and Bartha, Johann Wolfgang and Mikolajick, Thomas}, title = {Improved Graphene-base Heterojunction Transistor with Different Collector Semi-conductors for High-frequency Applications}, series = {Advanced Materials Letters}, volume = {13}, journal = {Advanced Materials Letters}, number = {1}, issn = {0976-3961}, doi = {10.5185/amlett.2022.011688}, abstract = {A new kind of transistor device with a graphene monolayer embedded between two n-type silicon layers is fabricated and characterized. The device is called graphene-base heterojunction transistor (GBHT). The base-voltage controls the current of the device flowing from the emitter via graphene to the collector. The transit time for electrons passing by the ultrathin graphene layer is extremely short which makes the device very promising for high frequency RF-electronics. The output current of the device is saturated and clearly modulated by the base voltage. Further, the silicon collector of the GBHT is replaced by germanium to improve the device performance. This enabled the collector current to be increased by almost three orders of magnitude. Also, the common-emitter current gain (Ic/Ib) increased from 10-3 to approximately 0.3 for the newly designed device. However, the ON-OFF ratio of the improved germanium based GBHT has so far been rather low. Further optimizations are necessary in order to fully exploit the potential of the graphene-base heterojunction transistor.}, language = {en} } @misc{MatosFialhoDraganoReuteretal., author = {Matos Fialho, Paula Mayara and Dragano, Nico and Reuter, Marvin and Deindl, Christian and Schleberger, Sarah and Metzendorf, Maria-Inti and Hoffmann, Stephanie and Diehl, Katharina and Wachtler, Benjamin and Sch{\"u}ttig, Wiebke and Herke, Max and Richter, Matthias and Pischke, Claudia R.}, title = {School-to-work and school-to-university transition and health inequalities among young adults: a scoping review}, series = {BMJ Open}, volume = {12}, journal = {BMJ Open}, number = {7}, issn = {2044-6055}, doi = {10.1136/bmjopen-2021-058273}, pages = {e058273}, abstract = {Objectives The main objective was to systematically map evidence regarding the emergence of health inequalities in individuals aged 16-24 years during school-to-work and school-to-university transition (STWT). Second, we aimed to summarise the evidence on potential effects of contextual and compositional characteristics of specific institutional contexts entered during STWT on health and health behaviours. Design Scoping review. Study selection Relevant literature was systematically searched following the methodological framework proposed by Arksey and O'Malley. Ovid MEDLINE and Web of Science, and websites of the International Labour Organization and National Institute for Occupational Safety and Health were searched, using a predetermined search strategy. Articles in English or German published between 1 January 2000 and 3 February 2020 were considered. Data extraction To collect the main information from the selected studies, a data extraction spreadsheet was created. Data were summarised and grouped into five health outcomes and five institutional contexts (school, vocational training, university, work, unemployment). Results A total of 678 articles were screened for inclusion. To be able to draw a picture of the development of various health outcomes over time, we focused on longitudinal studies. Forty-six prospective studies mapping health-related outcomes during STWT were identified. Higher family socioeconomic position (SEP) was associated with higher levels of health behaviour and lower levels of health-damaging behaviour, but there was also some evidence pointing in the opposite direction. Disadvantaged family SEP negatively impacted on mental health and predicted an adverse weight development. There was limited evidence for the outcomes physical/somatic symptoms and self-rated health. Meso-level characteristics of the institutional contexts identified were not systematically assessed, only individual-level factors resulting from an exposure to these contexts, rendering an analysis of effects of contextual and compositional characteristics on health and health behaviours impossible. Conclusions This scoping review demonstrated a wide range of health inequalities during STWT for various health outcomes. However, knowledge on the role of the core institutional contexts regarding the development of health inequalities is limited.}, language = {en} } @misc{StrobelAlvaradoChavarinRichteretal., author = {Strobel, Carsten and Alvarado Chavarin, Carlos and Richter, Karola and Knaut, Martin and Reif, Johanna and Völkel, Sandra and Jahn, Andreas and Albert, Matthias and Wenger, Christian and Kirchner, Robert and Bartha, Johann Wolfgang and Mikolajick, Thomas}, title = {Novel Graphene Adjustable-Barrier Transistor with Ultra-High Current Gain}, series = {ACS Applied Materials \& Interfaces}, volume = {14}, journal = {ACS Applied Materials \& Interfaces}, number = {34}, issn = {1944-8244}, doi = {10.1021/acsami.2c10634}, pages = {39249 -- 39254}, abstract = {A graphene-based three terminal barristor device was proposed to overcome the low on/off ratios and insufficient current saturation of conventional graphene field effect transistors. In this study, we fabricated and analyzed a novel graphene-based transistor, which resembles the structure of the barristor but uses a different operating condition. This new device, termed graphene adjustable-barriers transistor (GABT), utilizes a semiconductor-based gate rather than a metal-insulator gate structure to modulate the device currents. The key feature of the device is the two graphene-semiconductor Schottky barriers with different heights that are controlled simultaneously by the gate voltage. Due to the asymmetry of the barriers, the drain current exceeds the gate current by several orders of magnitude. Thus, the GABT can be considered an amplifier with an alterable current gain. In this work, a silicon-graphene-germanium GABT with an ultra-high current gain (ID/IG up to 8 × 106) was fabricated, and the device functionality was demonstrated. Additionally, a capacitance model is applied to predict the theoretical device performance resulting in an on-off ratio above 106, a swing of 87 mV/dec, and a drivecurrent of about 1 × 106 A/cm2.}, language = {en} } @misc{ReuterHerkeRichteretal., author = {Reuter, Marvin and Herke, Max and Richter, Matthias and Diehl, Katharina and Hoffmann, Stephanie and Pischke, Claudia R. and Dragano, Nico}, title = {Young people's health and well-being during the school-to-work transition: a prospective cohort study comparing post-secondary pathways}, series = {BMC Public Health}, volume = {22}, journal = {BMC Public Health}, issn = {1471-2458}, doi = {10.1186/s12889-022-14227-0}, pages = {1 -- 13}, abstract = {Background: At the end of secondary education, young people can either start vocational training, enter university, directly transition to employment or become unemployed. Research assumes that post-secondary pathways have immediate and/or long-term impacts on health and well-being, but empirical investigations on this are scarce and restricted to few countries. Therefore, this study traced the development of health and well-being throughout the highly institutionalised school-to-work transition (STWT) in Germany. Methods: We used longitudinal data of the National Educational Panel Study (NEPS), a representative sample of 11,098 school-leavers (50.5\% girls) repeatedly interviewed between 2011 and 2020. We estimated the effect of post-secondary transitions on self-rated health and subjective well-being by applying fixed-effects (FE) regression, elimi-nating bias resulting from time-constant confounding and self-selection into different pathways. A multiple-sample strategy was used to account for the increasing diversity of STWTs patterns. Models were controlled for age, as well as household and residential changes to minimise temporal heterogeneity. Results: Findings indicate that leaving school was good for health and well-being. Compared with participants who did not find a training position after school, direct transitions to vocational training or university were linked to higher absolute levels of health and well-being, but also to a lower relative decline over time. Furthermore, upward transi-tions (e.g. to programs leading to better education or from unemployment to employment) were associated with improvements in health and well-being, while downward transitions were followed by deteriorations. Conclusion: Findings suggest that school-leave is a sensitive period and that post-secondary pathways provide young people with different abilities to maintain health and well-being. Youth health interventions might benefit when setting a stronger focus on unsuccessful school-leavers.}, language = {en} } @misc{DeindlDiehlSpalleketal., author = {Deindl, Christian and Diehl, Katharina and Spallek, Jacob and Richter, Matthias and Sch{\"u}ttig, Wiebke and Rattay, Petra and Dragano, Nico and Pischke, Claudia R.}, title = {Self-rated health of university students in Germany-The importance of material, psychosocial, and behavioral factors and the parental socio-economic status}, series = {Frontiers in Public Health}, volume = {11}, journal = {Frontiers in Public Health}, issn = {2296-2565}, doi = {10.3389/fpubh.2023.1075142}, abstract = {Health inequalities start early in life. The time of young adulthood, between late teens and early twenties, is especially interesting in this regard. This time of emerging adulthood, the transition from being a child to becoming an adult, is characterised by the detachment from parents and establishing of an own independent life. From a health inequality perspective, the question about the importance of the socio-economic background of parents is important. University students are an especially interesting group. Many students come from a privileged background and the question of health inequality among university students has not yet been properly studied. Based on the National Educational Panel Study (NEPS), we analysed health inequalities among 9,000 students in Germany ({\O} 20 years in the first year of their studies) over a period of eight years. We found that university students in Germany report a good and very good health. Yet, we still found substantial health inequalities. Students whose parents had a higher occupational status also reported less health problems. We were also able to tie health inequality on health behaviour, psychosocial resources, and material conditions.}, language = {en} } @misc{ReuterDiehlRichteretal., author = {Reuter, Marvin and Diehl, Katharina and Richter, Matthias and Sundmacher, Leonie and H{\"o}vener, Claudia and Spallek, Jacob and Dragano, Nico}, title = {A longitudinal analysis of health inequalities from adolescence to young adulthood and their underlying causes}, series = {Advances in Lifecourse Research}, volume = {Vol. 59}, journal = {Advances in Lifecourse Research}, issn = {1879-6974}, doi = {10.1016/j.alcr.2024.100593}, abstract = {Research suggests that children of low-educated parents face greater health burdens during the passage from adolescence to young adulthood, as they are more likely to become low-educated themselves, establish behavioural and psychosocial disadvantages, or being exposed to unhealthy working conditions. However, studies examining the development and drivers of health inequalities during this particular life stage are limited in number and have produced varied results. This study investigates trajectories of self-rated health and overweight from 14 to 25 years of age, stratified by parental education, and explores the role of potential mediators (educational achievement, health behaviours, psychosocial factors, working conditions). We rely on prospective cohort data from the National Educational Panel Study (NEPS), a representative sample of 14,981 German ninth graders interviewed yearly from 2011 to 2021 (n = 90,096 person-years). First, we estimated random-effects growth curves for self-rated health and overweight over participants' age and calculated the average marginal effect of high versus low parental education. Second, a series of simulation-based mediation analyses were performed to test how much of health inequalities were explained by children's educational attainment (years of school education, years in university), health behaviours (smoking, alcohol, physical inactivity), psychosocial factors (number of grade repetitions, years in unemployment, chronic stress, self-esteem) and working conditions (physical and psychosocial job demands). We accounted for potential confounding by controlling for age, sex, migration background, residential area, household composition, and interview mode. Results show that higher parental education was related to higher self-rated health and lower probabilities of being overweight. Interaction between parental education and age indicated that, after some equalisation in late adolescence, health inequalities increased in young adulthood. Furthermore, educational attainment, health behaviours, psychosocial factors, and early-career working conditions played a significant role in mediating health inequalities. Of the variables examined, the level of school education and years spent in university were particular strong mediating factors. School education accounted for around one-third of the inequalities in self-rated health and one-fifth of the differences in overweight among individuals. Results support the idea that the transition to adulthood is a sensitive period in life and that early socio-economic adversity increases the likelihood to accumulate health disadvantages in multiple dimensions. In Germany, a country with comparatively low educational mobility, intergenerational continuities in class location seem to play a key role in the explanation of health inequalities in youth.}, language = {en} } @misc{WinterMoorMarkertetal., author = {Winter, Kristina and Moor, Irene and Markert, Jenny and Bilz, Ludwig and Bucksch, Jens and Dadaczynski, Kevin and Fischer, Saskia M. and Helmchen, Ronja M. and Kaman, Anne and M{\"o}ckel, Juliane and Rathmann, Katharina and Ravens-Sieberer, Ulrike and Reiß, Franziska and Schierl, Theresa and Sch{\"u}tz, Raphael and Sendatzki, Saskia and St{\"u}rmer, Elisabeth and Sudeck, Gorden and Richter, Matthias}, title = {Concept and methodology of the Health Behaviour in School-aged Children (HBSC) study - Insights into the current 2022 survey and trends in Germany}, series = {Journal of Health Monitoring}, volume = {9}, journal = {Journal of Health Monitoring}, number = {1}, issn = {2511-2708}, doi = {10.25646/11878}, pages = {99 -- 117}, abstract = {Background: Health Behaviour in School-aged Children (HBSC) is one of the largest international studies on child and adolescent health and cooperates with the World Health Organization (WHO). In Germany, adolescents aged 11, 13 and 15 are surveyed every four years about their health, health behaviour and social conditions. This article describes the HBSC study and in particular the methodology of the current 2022 survey and prior surveys conducted between 2009/10 and 2017/18. Method: 174 schools with a total of 6,475 students participated in the 2022 survey. The survey was conducted using questionnaires and covered a wide range of topics (including mental health, physical activity, bullying experiences, social determinants of health and experiences related to COVID-19). The 2022 survey was complemented by a school principal survey (N = 160). In addition to the current sample, the samples of the three previous surveys with representative data for Germany are presented: 2009/10 (N = 5,005), 2013/14 (N = 5,961) and 2017/18 (N = 4,347). Discussion: The health of children and adolescents is of great public health importance. The HBSC study makes a substantial contribution by providing internationally comparable results, analysing trends, and providing stakeholders with comprehensive and representative health monitoring data.}, language = {en} } @misc{BammertSchuettigIashchenkoetal., author = {Bammert, Philip and Sch{\"u}ttig, Wiebke and Iashchenko, Iryna and Spallek, Jacob and Rattay, Petra and Schneider, Sven and Richter, Matthias and Pischke, Claudia R. and Dragano, Nico and Sundmacher, Leonie}, title = {The role of sociodemographic, psychosocial, and behavioral factors in the use of preventive healthcare services in children and adolescents: results of the KiGGS Wave 2 study}, series = {BMC Pediatrics}, volume = {24}, journal = {BMC Pediatrics}, issn = {1471-2431}, doi = {10.1186/s12887-024-04650-0}, abstract = {Background: In Germany, various preventive services are offered to children and adolescents. These include regular standardized examinations (so called U/J examinations) and several vaccinations. Although strongly recommended, most of them are not mandatory. Our aim is to identify factors associated with the use of U/J examinations and vaccination against diphtheria, hepatitis B, Hib, pertussis, polio, and tetanus. While previous research has focused on sociodemographic factors, we also include socioeconomic, behavioral, and psychosocial factors. Methods: We analyzed cross-sectional data from 15,023 participants (aged 0-17 years) of the nationwide representative KiGGS Wave 2 Survey. Participation in U/J examinations was assessed using a questionnaire, filled out by participants and/or their parents. Information on vaccination status was drawn from the participants' vaccination booklets. To identify relevant determinants for the use of preventive examinations and vaccinations, unadjusted and adjusted logistic regression models were employed with up to 16 different independent variables. Results: Various independent variables showed an association with the use of preventive services. Higher socioeconomic status, absence of migration background, and lower household size were associated with significantly higher utilization of U examinations. Parents' marital status, area of residence, behavioral and psychosocial factors yielded insignificant results for most U/J examinations. Higher vaccination rates were found for children with no migration background, with residence in eastern Germany, lower household size, and with married parents. Conclusion: This study attempted to depict the influence of sociodemographic, psychosocial, and behavioral factors on the use of several preventive services. Our results indicate that predominantly sociodemographic variables influence the use of preventive services. Further efforts should be made to investigate the interplay of different determinants of healthcare use in children and adolescents.}, language = {en} } @misc{MoorWinterBilzetal., author = {Moor, Irene and Winter, Kristina and Bilz, Ludwig and Bucksch, Jens and Finne, Emily and John, Nancy and Kolip, Petra and Paulsen, Lisa and Ravens-Sieberer, Ulrike and Schlattmann, Marina and Sudeck, Gorden and Brindley, Catherina and Kaman, Anne and Richter, Matthias}, title = {Die Health Behaviour in School-aged Children (HBSC)-Studie 2017/18 - Methodik der Kinder- und Jugendgesundheits­studie der Weltgesundheitsorganisation}, series = {Journal of Health Monitoring}, volume = {5}, journal = {Journal of Health Monitoring}, number = {3}, issn = {2511-2708}, doi = {10.25646/6896}, pages = {93 -- 108}, abstract = {Die „Health Behaviour in School-Aged Children (HBSC)"-Studie ist ein international kooperatives Forschungsprojekt, das von der Weltgesundheitsorganisation (WHO) seit {\"u}ber 35 Jahren unterst{\"u}tzt wird. HBSC ist die weltweit gr{\"o}ßte Studie zur Kinder- und Jugendgesundheit und f{\"u}r die WHO eine der wichtigsten Datengrundlagen zur international vergleichenden Gesundheitsberichterstattung. Im vierj{\"a}hrigen Turnus werden Daten zur Gesundheit und zum Gesundheitsverhalten von Sch{\"u}lerinnen und Sch{\"u}lern im Alter von 11, 13 und 15 Jahren sowie zu den Rahmenbedingungen f{\"u}r ein gesundes Aufwachsen erhoben. Insgesamt geh{\"o}ren 50 L{\"a}nder dem HBSC-Netzwerk an, an dem Survey 2017/18 beteiligten sich insgesamt 45 L{\"a}nder. Deutschland beteiligt sich seit 1993/94 an der HBSC-Studie. F{\"u}r die aktuelle Erhebung 2017/18 in Deutschland wurden Sch{\"u}lerinnen und Sch{\"u}ler an 146 Schulen befragt (Responserate Schulen: 15,6 \%). Insgesamt konnte f{\"u}r Deutschland eine Netto-Stichprobe von n=4.347 M{\"a}dchen und Jungen (Responserate: 52,7 \%) erzielt werden. Die freiwillige Teilnahme an der Befragung erfolgte in ganzen Schulklassen der Jahrgangsstufen f{\"u}nf, sieben und neun. Mit Hilfe einer Gewichtung sind repr{\"a}sentative Aussagen zur gesundheitlichen Lage von Kindern und Jugendlichen in Deutschland m{\"o}glich. Die HBSC-Studie leistet einen wichtigen Beitrag f{\"u}r die Gesundheitsberichterstattung und bietet wichtige Ansatzpunkte f{\"u}r die Identifikation von Bedarfen, Risikogruppen und Handlungsfeldern, um gezielte und bedarfsorientierte Maßnahmen zur Pr{\"a}vention und Gesundheitsf{\"o}rderung im Setting Schule zu initiieren.}, language = {de} } @misc{WinterMoorMarkertetal., author = {Winter, Kristina and Moor, Irene and Markert, Jenny and Bilz, Ludwig and Bucksch, Jens and Dadaczynski, Kevin and Fischer, Saskia M. and Helmchen, Ronja M. and Kaman, Anne and M{\"o}ckel, Juliane and Rathmann, Katharina and Ravens-Sieberer, Ulrike and Reiß, Franziska and Schierl, Theresa and Sch{\"u}tz, Raphael and Sendatzki, Saskia and St{\"u}rmer, Elisabeth and Sudeck, Gorden and Richter, Matthias}, title = {Konzept und Methodik der Studie Health Behaviour in Schoolaged Children (HBSC) - Einblicke in den aktuellen Survey 2022 und die Entwicklung in Deutschland}, series = {Journal of Health Monitoring}, volume = {9}, journal = {Journal of Health Monitoring}, number = {1}, issn = {2511-2708}, doi = {10.25646/11877}, pages = {108 -- 127}, abstract = {Hintergrund: „Health Behaviour in School-aged Children (HBSC)" ist eine der gr{\"o}ßten internationalen Kinder- und Jugendgesundheitsstudien und kooperiert mit der Weltgesundheitsorganisation (WHO). In Deutschland werden im vierj{\"a}hrigen Turnus jeweils Heranwachsende im Alter von 11, 13 und 15 Jahren zur Gesundheit, zum Gesundheitsverhalten und zu sozialen Rahmenbedingungen befragt. Der Beitrag widmet sich der Beschreibung der HBSC-Studie und speziell der Methodik des aktuellen Surveys 2022 sowie der vorherigen Erhebungen von 2009/10 bis 2017/18. Methode: Am Survey 2022 beteiligten sich 174 Schulen mit insgesamt 6.475 Sch{\"u}lerinnen und Sch{\"u}lern. Die Erhebung erfolgte mittels Fragebogen und erfasst ein breites Themenspektrum (u. a. mentale Gesundheit, Bewegungsverhalten, Mobbingerfahrungen, soziale Determinanten der Gesundheit sowie Erfahrungen im Zusammenhang mit COVID-19). Erg{\"a}nzt wurde die Erhebung 2022 um eine Schulleitungsbefragung (N = 160). Neben der aktuellen Stichprobe werden auch die Stichproben der vorangegangenen drei Surveys mit repr{\"a}sentativen Angaben f{\"u}r Deutschland vorgestellt: 2009/10 (N = 5.005), 2013/14 (N = 5.961) und 2017/18 (N = 4.347). Diskussion: Die Kinder- und Jugendgesundheit hat eine hohe Public-Health-Relevanz. Dazu leistet die HBSC-Studie einen elementaren Beitrag, denn sie liefert international vergleichbare Ergebnisse, erm{\"o}glicht die Analyse von Trendentwicklungen und stellt umfangreiche, repr{\"a}sentative Daten zum Gesundheitsmonitoring f{\"u}r Stakeholder bereit.}, language = {de} } @misc{KarnapkeRichterWerner, author = {Karnapke, Reinhardt and Richter, Martin and Werner, Matthias}, title = {Virtualization in robot swarms: past, present, and future}, series = {2024 IEEE 21st Consumer Communications \& Networking Conference (CCNC)}, journal = {2024 IEEE 21st Consumer Communications \& Networking Conference (CCNC)}, publisher = {IEEE}, isbn = {979-8-3503-0457-2}, doi = {10.1109/CCNC51664.2024.10454838}, pages = {1 -- 6}, abstract = {Robot swarms have come a long way since the first mobile sensor/actuator networks. Since then, we have seen the rise of operating systems for robots and swarm operating systems that ease the use of robots, and especially of large swarms of them, a lot. Still, the description of a task is often not easy and best done by experts. In this paper we envision future swarm operating systems, where task descriptions take a form which can be realized by non-experts. We describe our idea of hugely increased virtualization in the swarm and how this can be used to realize the aforementioned vision.}, language = {en} } @misc{RichterSmolinaPawlaketal., author = {Richter, Lukas and Smolina, Irina and Pawlak, Andrzej and Schob, Daniela and Roszak, Robert and Maasch, Philipp and Ziegenhorn, Matthias}, title = {Thermomechanical analysis of PBF-LB/M AlSi7Mg0.6 with respect to rate-dependent material behaviour and damage effects}, series = {Applied Mechanics}, volume = {5}, journal = {Applied Mechanics}, number = {3}, publisher = {MDPI}, issn = {2673-3161}, doi = {10.3390/applmech5030030}, pages = {533 -- 552}, abstract = {This paper describes the self-heating effects resulting from mechanical deformation in the additively manufactured aluminium alloy AlSi7Mg0.6. The material's self-heating effect results from irreversible changes in the material's microstructure that are directly coupled with the inelastic deformations. These processes are highly dissipative, which is reflected in the heat generation of the material. To describe such effects, a numerical framework that combines an elasto-viscoplastic Chaboche model with the Gurson Tvergaard Needleman damage approach is analysed and thermomechanically extended. This paper characterises the sample preparation, the experimental set-up, the development of the thermomechanical approach, and the material model. A user material subroutine applies the complete material model for the finite element software Abaqus 2022. To validate the material model and the parameters, a complex tensile test is performed. In order to check the finite element model, the energy transformation ratio is included in the evaluation. The numerical analyses of the mechanical stress evolution and the self-heating behaviour demonstrate good agreement with the experimental test. In addition, the calculation shows the expected behaviour of the void volume fraction that rises from the initial value of 0.0373\%to a higher value under a complex mechanical load.}, language = {en} } @misc{HerkeReuterMayeretal., author = {Herke, Max and Reuter, Marvin and Mayer, A. and Spallek, Jacob and Rattay, Petra and Moor, Irene and Richter, Matthias}, title = {Wie wirkt sich die sozio{\"o}konomische Komposition der Schule auf Ungleichheiten im subjektiven Wohlbefinden von Sch{\"u}lerinnen und Sch{\"u}lern in Deutschland aus?}, series = {Gesundheitswesen}, volume = {84}, journal = {Gesundheitswesen}, number = {08/09}, publisher = {Georg Thieme Verlag}, doi = {10.1055/s-0042-1753867}, pages = {826}, abstract = {Einleitung Zielsetzung des Beitrags ist es, zu untersuchen, inwiefern die sozio{\"o}konomische Komposition von Schulen mit dem Wohlbefinden von Sch{\"u}lerinnen und Sch{\"u}lern in Deutschland assoziiert ist. Konkret wurden die Assoziationen der Bildung, des Einkommens und des beruflichen Status der Eltern auf Individualebene und aggregiert auf Schulebene sowie die Interaktionen zwischen diesen Ebenen auf das subjektive Wohlbefinden von Sch{\"u}lern der Sekundarstufe I untersucht. Methoden Es wurden Daten der Startkohorte „Klasse 5" des Nationalen Bildungspanels (NEPS) herangezogen. Die Kohorte startete 2010 mit einer repr{\"a}sentativen Stichprobe von F{\"u}nftkl{\"a}sslern in Deutschland, welche j{\"a}hrlich nachverfolgt wurden. Es wurden Erhebungswellen von der f{\"u}nften bis zur neunten Klasse zusammengefasst. Damit konnten 14.265 Beobachtungen mit vollst{\"a}ndigen Angaben von 3.977 Sch{\"u}lerinnen und Sch{\"u}lern in 218 Schulen in den Analysen ber{\"u}cksichtigt werden. Mit Mixed-Models wurde getestet, ob die sozio{\"o}konomische Position auf individueller und/oder schulischer Ebene und die ebenen{\"u}bergreifende Interaktion dieser Indikatoren mit dem Wohlbefinden (adaptierter Personal Well-Being - School Children-Index) der Jugendlichen assoziiert ist. Es wurde f{\"u}r Alter, Geschlecht, Migrationshintergrund, Familienform, Schultyp und Notendurchschnitt kontrolliert. Ergebnisse Auf individueller Ebene war das elterliche Einkommen mit h{\"o}herem Wohlbefinden verbunden. Der berufliche Status der Eltern zeigte keine signifikanten Assoziationen. Auf Schulebene fanden wir einen geringen, positiven Zusammenhang zwischen dem durchschnittlichen elterlichen Einkommen und dem individuellen Wohlbefinden, aber auch einen m{\"a}ßig negativen Einfluss eines hohen Anteils hoch gebildeter Eltern auf das Wohlbefinden. In Sensitivit{\"a}tsanalysen blieben diese Zusammenh{\"a}nge auch bei separater Betrachtung dieser Indikatoren bestehen. Die Zusammenh{\"a}nge auf Individualebene wurden nicht durch die sozio{\"o}konomische Komposition von Schulen moderiert, es konnten keine signifikanten ebenen{\"u}bergreifende Interaktionen festgestellt werden. Schlussfolgerung Es wurde ein Zusammenhang der sozio{\"o}konomischen Zusammensetzung der Schule mit dem subjektiven Wohlbefinden der Jugendlichen gefunden. Internationale Befunde einer Moderation der Zusammenh{\"a}nge auf individueller Ebene durch sozio{\"o}konomische Charakteristika auf Schulebene konnten jedoch nicht repliziert werden. Die Zusammenh{\"a}nge zwischen individueller SEP und Wohlbefinden variieren somit nicht in Abh{\"a}ngigkeit von der SEP auf Schulebene. Es zeigen sich vielmehr in Teilen additive Effekte f{\"u}r die individuelle und schulische SEP.}, language = {de} } @misc{ReuterPischkeRigoetal., author = {Reuter, Marvin and Pischke, Claudia R. and Rigo, Mariann and Diehl, Katharina and Spallek, Jacob and Richter, Matthias and H{\"o}vener, Claudia and Dragano, Nico}, title = {Health inequalities among young workers: the mediating role of working conditions and company characteristics}, series = {International Archives of Occupational and Environmental Health}, volume = {96}, journal = {International Archives of Occupational and Environmental Health}, number = {10}, issn = {1432-1246}, doi = {10.1007/s00420-023-02010-6}, pages = {1313 -- 1324}, abstract = {Objective Few studies have investigated health inequalities among young workers. The objectives of this study are to assess the extent of health inequalities in a sample of job starters and to explore the contribution of job demands and organisational factors. Methods We analyze data from the BIBB/BAuA Youth Employment Survey 2012. The cross-sectional survey includes a representative sample of 3214 German employees, apprentices, and trainees aged 15-24 years. Individuals were grouped by their years of schooling into low (< 12 years) and high levels of education (≥ 12 years). Regression analysis estimated the link between education and four health outcomes: self-rated health, number of health events, musculoskeletal symptoms, and mental health problems over the last 12 months. Counterfactual mediation analysis tested for indirect effects of education via working conditions (i.e., physical and psychosocial job demands) and company characteristics (i.e., company size, health prevention measures, financial situation, downsizing). All analyses were adjusted for age, sex, nationality, region, working hours, job tenure, employment relationship, and economic sector. Results Highly educated workers reported better self-rated health (b = 0.24, 95\% CI 0.18-0.31) and lower numbers of health events (Rate Ratio (RR) = 0.74, 95\% CI 0.67-0.82), musculoskeletal symptoms (RR = 0.73, 95\% CI 0.66-0.80) and mental health problems (RR = 0.84, 95\% CI 0.76-0.93). Total job demands explained between 21.6\% and 87.2\% of the educational differences (depending on health outcome). Unfavourable company characteristics were associated with worse health, but showed no or only small mediation effects. Conclusions Health inequalities are already present at the early working career due to socio-economically stratified working hazards. To enhance prevention measures that aim at reducing inequalities in workplace health, we propose shifting attention towards earlier stages of life.}, language = {en} } @misc{HoffmannSanderRattayetal., author = {Hoffmann, Stephanie and Sander, Lydia and Rattay, Petra and Blume, Miriam and H{\"o}vener, Claudia and Schneider, Sven and Richter, Matthias and Pischke, Claudia R. and Sch{\"u}ttig, Wiebke and De Bock, Freia and Spallek, Jacob}, title = {Do family characteristics contribute to a socioeconomic gradient in overweight in early childhood? - Single mediation analyses of data from German preschool children}, series = {Preventive Medicine Reports}, volume = {33}, journal = {Preventive Medicine Reports}, issn = {2211-3355}, doi = {10.1016/j.pmedr.2023.102178}, abstract = {Children's overweight is strongly associated with family socioeconomic position (SEP) and family characteristics (FC). There is limited research on the extent to which FC account for a socioeconomic gradient in childhood overweight. This study examined whether FC explain SEP differences in the prevalence of overweight. The study used baseline data of preschool-aged children from the German 'PReschool INtervention Study'. The sample (n = 872, 48\% girls) was recruited at kindergartens in Baden-W{\"u}rttemberg, Germany. Data included children's measured weight status and parents' reports on socioeconomic indicators (e.g., school education, vocational education, income) and FC. Variables represent main determinants of overweight (nutrition: sweets consumption in front of TV, soft drink consumption, regular breakfast, child sets table; physical activity: outdoor sports; parental role model). In single mediation analyses indirect effects of SEP on overweight were analysed (OR[95\%CI]). Preschool girls and boys with low parental education had higher odds for overweight than children with high parental education. Among boys, low levels of parental education contributed to the odds of overweight via indirect effects by both factors 'sweets consumption in front of TV' (OR = 1.31[1.05-1.59]) and 'no sports' (OR = 1.14[1.01-1.38]). Among girls, FC measured did not explain SEP differences in overweight. Family nutrition and parental/family physical activity contribute to inequalities in overweight among preschool boys, but not girls. Research is needed to identify FC that explain inequalities in overweight for both.}, language = {en} } @misc{SchobRichterKoteckietal., author = {Schob, Daniela and Richter, Lukas and Kotecki, Krzysztof and Kurpisz, Dariusz and Roszak, Robert and Maasch, Philipp and Ziegenhorn, Matthias}, title = {Characterization and Simulation of Shear-Induced Damage in Selective-Laser-Sintered Polyamide 12}, series = {Materials}, volume = {17}, journal = {Materials}, number = {1}, issn = {1996-1944}, doi = {10.3390/ma17010038}, pages = {15}, abstract = {This paper presents the characterisation of selective-laser-sintered (SLS) samples of polyamide 12 (PA12) under shear loading. PA12 is a semi-crystalline thermoplastic and is used in various industries. Its behaviour under shear stress, which is particularly important for product reliability, has not yet been sufficiently investigated. This research focuses on understanding the material and damage behaviour of PA12 under shear-induced stress conditions. The study included quasi-static experiments and numerical simulations. Samples were prepared via SLS and tested according to ASTM standards. Digital image correlation (DIC) was used for precise deformation measurements. The Chaboche material model was used for the viscoplastic behaviour in the numerical simulations. Due to existing material discontinuities in the form of voids, the material model was coupled with the Gurson-Tvergaard-Needleman (GTN) damage model. A modified approach of the GTN model was used to account for low stress triaxiality under shear loading. These models were implemented in MATLAB and integrated into Abaqus via a User Material (UMAT) subroutine. The results of the experiments and simulations showed a high degree of accuracy. An important finding was the significant influence of the shear factor kw on the damage behaviour, especially during failure. This factor proved to be essential for the accurate prediction of material behaviour under shear-induced stress conditions. The integration of the modified GTN model with the Chaboche material model in UMAT enables an accurate prediction of the material and damage behaviour and thus makes an important contribution to the understanding of the mechanical material behaviour of SLS PA12 specimens.}, language = {en} } @misc{RichterKarnapkeWerner, author = {Richter, Martin and Karnapke, Reinhardt and Werner, Matthias}, title = {Utilizing sensor and actuator virtualization to achieve a systemic view of mobile heterogeneous cyber-physical systems}, series = {Proceedings of the 14th International Conference on Simulation and Modeling Methodologies, Technologies and Applications}, journal = {Proceedings of the 14th International Conference on Simulation and Modeling Methodologies, Technologies and Applications}, publisher = {SCITEPRESS - Science and Technology Publications}, isbn = {978-989-758-708-5}, doi = {10.5220/0012715800003758}, pages = {207 -- 214}, abstract = {When programming cyber-physical systems, application developers currently utilize physical sensors and actuators individually to achieve the desired observations and impacts within the physical world. This is an error-prone and complex task given the size, heterogeneity, and mobility of prevailing cyber-physical systems. We introduce an application model that allows the application developers to take a physical perspective. By means of this model, the programmers describe desired observations and influences with respect to the physical world without directly referencing physical devices. We present an additional model for a runtime environment that transparently utilizes the available physical devices to reach the application developers' targets. We show that an implementation of our models is functional via simulation.}, language = {en} } @misc{DadaczynskiKamanRavensSiebereretal., author = {Dadaczynski, Kevin and Kaman, Anne and Ravens-Sieberer, Ulrike and Fischer, Saskia M. and Bilz, Ludwig and Sendatzki, Saskia and Helmchen, Ronja M. and Rathmann, Katharina and Richter, Matthias}, title = {Problematische Nutzung digitaler Medien und Gesundheitskompetenz von Sch{\"u}lerinnen und Sch{\"u}lern in Deutschland : Befunde der HBSC-Studie 2022}, series = {Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz}, journal = {Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz}, publisher = {Springer Science and Business Media LLC}, issn = {1436-9990}, doi = {10.1007/s00103-025-04008-6}, pages = {11}, abstract = {Hintergrund Der digitale Alltag von Kindern und Jugendlichen ist durch eine hohe Nutzung sozialer Medien und digitaler Spiele gepr{\"a}gt. Bisherige Forschung konnte gesundheitsabtr{\"a}gliche Konsequenzen einer problematischen Mediennutzung aufzeigen. Hingegen wurden Zusammenh{\"a}nge mit der Gesundheitskompetenz kaum untersucht, obgleich Rahmenmodelle Gesundheitskompetenz als Determinante des Gesundheitsverhaltens nahelegen. Methoden Dieser Beitrag greift auf Daten der repr{\"a}sentativen Studie „Health Behaviour in School-aged Children" (HBSC) in Deutschland aus dem Jahr 2022 mit n = 6475 Sch{\"u}lerinnen und Sch{\"u}lern zur{\"u}ck. Es wurden Zusammenh{\"a}nge zwischen der problematischen Nutzung von sozialen Medien und der Videospielintensit{\"a}t sowie der Gesundheitskompetenz unter Ber{\"u}cksichtigung soziodemografischer und -{\"o}konomischer Merkmale bivariat und multivariat untersucht. Ergebnisse Die Pr{\"a}valenz der problematischen Nutzung sozialer Medien betrug 11,1 \% und etwa ein Drittel gab an, mehr als 9 h pro Woche mit digitalen Spielen zu verbringen. Eine geringe Gesundheitskompetenz stand mit beiden Formen der Mediennutzung in signifikantem Zusammenhang. Zudem war die problematische Nutzung sozialer Medien mit einer weiblichen und genderdiversen Geschlechtszugeh{\"o}rigkeit, dem Alter von 13 Jahren, dem Vorliegen eines Migrationshintergrunds und der Zugeh{\"o}rigkeit zu einer anderen Schulform als das Gymnasium verbunden. Eine hohe Spielintensit{\"a}t war mit einer m{\"a}nnlichen und genderdiversen Geschlechtszuordnung, der Zugeh{\"o}rigkeit zu den Altersgruppen der 13- und 15-J{\"a}hrigen und einem geringen famili{\"a}ren Wohlstand assoziiert. Diskussion Die Ergebnisse liefern nicht nur Hinweise f{\"u}r die Identifikation von Heranwachsenden mit besonderem Pr{\"a}ventionsbedarf, sondern betonen auch die Relevanz, die der Gesundheitskompetenz f{\"u}r das Mediennutzungsverhalten zukommt. Exemplarische Empfehlungen werden unter R{\"u}ckgriff auf die internationale Literatur aufgegriffen.}, language = {de} } @misc{KraljevskiDuckhornJuetal., author = {Kraljevski, Ivan and Duckhorn, Frank and Ju, Yong Chul and Tsch{\"o}pe, Constanze and Richter, Christian and Wolff, Matthias}, title = {Acoustic Resonance Recognition of Coins}, series = {2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 25-28 May 2020, Dubrovnik, Croatia}, journal = {2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 25-28 May 2020, Dubrovnik, Croatia}, publisher = {IEEE Xplore}, isbn = {978-1-7281-4460-3}, doi = {10.1109/I2MTC43012.2020.9129256}, pages = {6}, abstract = {In this study, we compare different machine learning approaches applied to acoustic resonance recognition of coins. Euro-cents and Euro-coins were classified by the sound emerging when throwing the coins onto a hard surface.The used dataset is a representative example of a small data which was collected in carefully prepared experiments.Due to the small number of coin specimens and the count of the collected observations, it was interesting to see whether deep learning methods can achieve similarly or maybe even better classification performances compared with more traditional methods.The results of the multi-class prediction of coin denominations are presented and compared in terms of balanced accuracy and Matthews Correlation Coefficient metrics. The feature analysis methods combined with the employed classifiers achieved acceptable results, despite the relatively small dataset.}, language = {en} } @inproceedings{TschoepeDuckhornRichteretal., author = {Tsch{\"o}pe, Constanze and Duckhorn, Frank and Richter, Christian and Bl{\"u}thgen, Peter and Wolff, Matthias}, title = {Intelligent Signal Processing on a Miniaturized Hardware Module}, series = {IEEE SENSORS Proceedings, Glasgow, Scotland, UK, Oct. 29 - Nov. 1, 2017}, booktitle = {IEEE SENSORS Proceedings, Glasgow, Scotland, UK, Oct. 29 - Nov. 1, 2017}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5090-1012-7}, doi = {10.1109/ICSENS.2017.8234023}, language = {en} } @inproceedings{TschoepeDuckhornRichteretal., author = {Tsch{\"o}pe, Constanze and Duckhorn, Frank and Richter, Christian and Bl{\"u}thgen, Peter and Wolff, Matthias}, title = {An embedded system for acoustic pattern recognition}, series = {IEEE SENSORS Proceedings, Glasgow, Scotland, UK, Oct. 29 - Nov. 1, 2017}, booktitle = {IEEE SENSORS Proceedings, Glasgow, Scotland, UK, Oct. 29 - Nov. 1, 2017}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5090-1012-7}, doi = {10.1109/ICSENS.2017.8234380}, pages = {3}, language = {en} }