196,990 research outputs found
Relational Width of First-Order Expansions of Homogeneous Graphs with Bounded Strict Width
No full textSolving the algebraic dichotomy conjecture for constraint satisfaction problems over structures first-order definable in countably infinite finitely bounded homogeneous structures requires understanding the applicability of local-consistency methods in this setting. We study the amount of consistency (measured by relational width) needed to solve CSP(?) for first-order expansions ? of countably infinite homogeneous graphs ℋ := (A; E), which happen all to be finitely bounded. We study our problem for structures ? that additionally have bounded strict width, i.e., for which establishing local consistency of an instance of CSP(?) not only decides if there is a solution but also ensures that every solution may be obtained from a locally consistent instance by greedily assigning values to variables, without backtracking.
Our main result is that the structures ? under consideration have relational width exactly (2, ?_ℋ) where ?_ℋ is the maximal size of a forbidden subgraph of ℋ, but not smaller than 3. It beats the upper bound: (2 m, 3 m) where m = max(arity(?)+1, ?, 3) and arity(?) is the largest arity of a relation in ?, which follows from a sufficient condition implying bounded relational width given in [Manuel Bodirsky and Antoine Mottet, 2018]. Since ?_ℋ may be arbitrarily large, our result contrasts the collapse of the relational bounded width hierarchy for finite structures ?, whose relational width, if finite, is always at most (2,3)
Gesundes Leben trotz Klimawandel im Quartier?! Transdisziplinäres Kooperationsprojekt in Anlehnung an das Forschungsformat ‚Reallabor‘
No full textSiegler M, Wrona KJ. Gesundes Leben trotz Klimawandel im Quartier?! Transdisziplinäres Kooperationsprojekt in Anlehnung an das Forschungsformat ‚Reallabor‘. Presented at the Fachtagung Reallaborforschung im Gesundheits- und Sozialwesen, Bielefeld
Is students’ teamwork a dreamwork? A new DCE-based multidimensional approach to preferences towards group work
No full textThe data refer to the study on the preferences of lower secondary school students in Poland for different modes of learning and school subjects. It employs a discrete choice experiment to describe student preferences in light of the time devoted to studying. The study shows significant heterogeneity of student tastes for different study modes. Most students prefer studying in a group of peers, but there are important differences across students at different achievement levels and subjects. This study demonstrates how preferences toward learning can be properly measured using discrete choice experiments.Data related to publication: Gajderowicz, T., Jakubowski, M., Wrona, S. et al. Is students’ teamwork a dreamwork? A new DCE-based multidimensional approach to preferences towards group work. Humanit Soc Sci Commun 10, 154 (2023). https://doi.org/10.1057/s41599-023-01641-xDane dotyczą wyników badania metodą DCE poświęconego preferencjom uczniów gimnazjów w Polsce w zakresie różnych form nauki i przedmiotów szkolnych. Badanie pokazuje znaczną różnorodność upodobań uczniów w zakresie różnych trybów nauki. Większość uczniów woli uczyć się w grupie rówieśników, ale istnieją istotne różnice między uczniami w zależności od poziomu osiągnięć i przedmiotów. Badanie to pokazuje, w jaki sposób preferencje dotyczące uczenia się można właściwie zmierzyć za pomocą eksperymentów z dyskretnym wyborem.Zbiór danych jest powiązany z artykułem Gajderowicz, T., Jakubowski, M., Wrona, S. et al. Is students’ teamwork a dreamwork? A new DCE-based multidimensional approach to preferences towards group work. Humanit Soc Sci Commun 10, 154 (2023). https://doi.org/10.1057/s41599-023-01641-x</p
Quartiersarbeit in den CareTech-HUBs Kamphof/Schildesche: Gesund Leben trotz Klimawandel in Schildesche
No full textSiegler M, Wrona KJ. Quartiersarbeit in den CareTech-HUBs Kamphof/Schildesche: Gesund Leben trotz Klimawandel in Schildesche. Presented at the TransCareTech Forschungskolloquium
Zasoby podmiotowe i radzenie sobie ze stresem a zdrowie osób bliskich wspierających chorych na białaczkę
No full textThe aim of the conducted research was to learn the psychological mechanisms leading to health in relatives who support patients with leukaemia.
The Functional Health Model developed by Helena Wrona-Polańska (2003), which is based on a systems theory that takes into account the relationship between a person and his or her environment, is the theoretical basis of the work. According to Wrona-Polańska (2003, 2011), health is understood as a function of creative coping with stress, where the key role is played by resources or their deficits, which determine the effectiveness of coping. The fundamental importance in the adopted model is attributed to the pro-health personality, a complex variable that influences three pathways to health (the competence path, the emotional path and the tension path).
The research covered 100 people supporting patients with leukaemia. A standardized interview constructed on the basis of the Questionnaire of Stressful Life Events (KWS) by Helena Wrona-Polańska (2003), estimated scales and questionnaire tools were used in the research. Health was defined on the basis of the operational definition of health given by Wrona-Polańska (2003), it was measured with five indicators: a sense of health, a sense of calm, a sense of quality of life, a sense of lack of fatigue and participation in social life. The result obtained by the participants on the scale of anxiety as a state (Wrona-Polańska, 2011) was the indicator of stress level. Styles of coping with stress were measured by using the Coping Inventory for Stressful Situations Questionnaire (CISS). The questionnaire and standardized interviews were used to study the resources. Self-esteem was measured with The Rosenberg Self-esteem Scale (SES), sense of coherence was measured with Antonovsky's sense of coherence (SOC-29), dispositional anxiety was measure with State-Trait Anxiety Inventory (STAI X-2) developed by D. Spielberg, J. Strelau, M. Tysarczyk and K. Wrześniewski, sense of support and self-efficacy in struggling with the disease of a close relative was measured with a standardized interview.
The analysis of the results was qualitative and quantitative, and included the following groups of variables: health, stress and coping styles as well as resources. The statistical analyses, that were carried out, revealed that 2/3 of the participants assessed their health as average or high. Half of the people supporting leukaemia patients experience a high level of stress. 1/4 of respondents have a low level of sense of coherence and control, 1/3 of respondents have a low
sense of support and self-efficacy in coping with the disease of a close relative, half of the respondents have a high level of dispositional anxiety.
The statistical analyses, that were carried out, enabled to determine the predictors of health, stress and coping with stress. The regression analysis revealed that the positive predictors of health of people supporting leukaemia patients are: seeking social contacts and a sense of support from others, while negative ones are: a style focused on emotions and dispositional anxiety. Stress is explained by a style focused on emotions, a sense of coherence and dispositional anxiety. Subjective resources are the psychological mechanisms conditioning the health of people supporting leukaemia patients. The resources affect the health of close relatives who support patients with leukaemia, strengthen the sense of health, counteract high levels of stress and condition the coping with a difficult situation such as a close relative’s suffering from leukaemia. Health is conducive to the search for social contacts understood as seeking support, a strong sense of coherence, a sense of support from others and positive self- esteem, which helps to avoid concentration on negative emotions and motivates to engage in activities that release positive emotions. Concentration on negative emotions and high level of dispositional anxiety threaten the health of the participants.
The results of the research can be applied in psychological practice - to construct preventive and health promoting programs among people supporting patients with leukaemia
Realexperiment Klimakiosk: Ein quartiersbezogenes Beteiligungsformat zum Thema „Gesundes Leben trotz Klimawandel!?“
No full textWrona KJ, Siegler M. Realexperiment Klimakiosk: Ein quartiersbezogenes Beteiligungsformat zum Thema „Gesundes Leben trotz Klimawandel!?“. Presented at the Gesundheit – gemeinsam. Kooperationstagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie (GMDS), Deutschen Gesellschaft für Sozialmedizin und Prävention (DGSMP), Deutschen Gesellschaft für Epidemiologie (DGEpi), Deutschen Gesellschaft für Medizinische Soziologie (DGMS) und der Deutschen Gesellschaft für Public Health (DGPH) , Dresden
Parution : A. Wrona et M.-E. Thérenty (dir.), "L’écrivain comme marque"
No full textParution : Adeline Wrona et Marie-Ève Thérenty (dir.), L’écrivain comme marque, Sorbonne Université Presses. Si l’on voit pourquoi Nespresso dépense une fortune pour faire de Georges Clooney son ambassadeur what else, il est peut-être plus difficile de comprendre le gain que la marque espère tirer de l’association avec un écrivain comme David Foenkinos, publié dans la prestigieuse collection « Blanche » chez Gallimard. Et si le profit escompté par l’écrivain est uniquement financier, alors c..
Die Zugänglichkeit von Care-Technologien in den Frühen Hilfen
No full textHeckes KT, Wrona KJ, Siegler M. Die Zugänglichkeit von Care-Technologien in den Frühen Hilfen. In: Middendorf T, Parchow A, eds. Junge Menschen in prekären Lebenslagen. 1st ed. Weinheim und München: Beltz Juventa; 2024: 446
Precise Orbit Determination on LEO Satellite using Pseudorange and Pseudorange-Rate Measurements
No full textNowadays, along with the trend of developing highly autonomous satellites, there is a strong motivation to improve real-time Precise Orbit Determination (POD), in particular for Low Earth Orbit (LEO) satellites. The development of Global Navigation Satellite System (GNSS) sensors allows to obtain low-noise measurements and provide a satellite with autonomous continuous tracking onboard. Following the deactivation of Selective Availability, a representative real-time positioning accuracy of 10 m is presently achieved by means of Global Positioning System (GPS) receivers on LEO satellites. The introduction of dynamical filtering methods has opened a new way to improve this accuracy by making use of measurements such as pseudorange or carrier-phase. This paper presents a Kalman filtering approach using pseudorange and pseudorange-rate measurements instead of pseudorange and carrier-phase ones, with advantages in terms of storage and processing requirements. An error of around 0.2 m and 1e-3 m/s for position and velocity is obtained, which is in line if not better w.r.t. other approaches
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
- …
