920 research outputs found
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
Formal Modelling of Content-Based Protection and Release for Access Control in NATO Operations
No full textThe successful operation of NATO missions requires the effective and secure sharing of information among coalition partners and external organizations, while avoiding the disclosure of sensitive information to unauthorized users. To resolve the conflict between confidentiality and availability in a dynamic coalition and network environment while being able to dynamically respond to changes in protection requirements and release conditions, NATO is developing a new information sharing infrastructure. In this paper we present the Content-based Protection and Release (CPR) access control model for the NATO information sharing infrastructure. We define a declarative specification language for CPR based on the first-order logical framework underlying a class of efficient theorem-proving tools, called Satisfiability Modulo Theories solvers, and describe how they can support answering authorization queries. We illustrate the ideas in a use case scenario drawn from the NATO Passive Missile Defence system for simulating the consequences of intercepting missile attacks
Impact of virtual reality applications in the treatment of anxiety disorders: A systematic review and meta-analysis of randomized-controlled trials
No full textSchröder D, Wrona KJ, Müller F, Heinemann S, Fischer F, Dockweiler C. Impact of virtual reality applications in the treatment of anxiety disorders: A systematic review and meta-analysis of randomized-controlled trials. Journal of Behavior Therapy and Experimental Psychiatry . 2023;81: 101893.BACKGROUND AND OBJECTIVES: Anxiety disorders are the most prevalent mental disorders worldwide. Virtual reality (VR) treatment approaches have increasingly been studied. Before clinical implementation, it is necessary to evaluate the treatment effect of VR applications. The objective is to evaluate the treatment effect of virtual reality applications in the treatment of anxiety disorders compared to conventional therapy.; METHODS: A systematic literature review with meta-analysis was conducted. Four databases were used to identify randomized controlled trials published between April 2011 and April 2021 which compare VR applications with non-VR interventions or waiting lists. Study characteristics, pre- and post-treatment data were extracted. Hedges g was calculated as effect size. Primary outcome was anxiety symptoms.; RESULTS: Data from 17 studies from 827 participants was extracted. The studies examined specific phobia (n=9), social anxiety disorder (n=4), agoraphobia (n=2) and panic disorder (n=2). 16 out of 17 studies used head-mounted displays as VR application. A non-significant effect size with significant heterogeneity was observed in favor of the use of VR applications in anxiety symptoms (g, 0.33; 95%-CI, -0.20-0.87). Compared to passive control groups, VR applications are associated significant with lower anxiety symptoms (g, 1.29; 95%-CI, 0.68-1.90).; LIMITATIONS: The study and patient characteristics varied between the individual studies which is reflected in a high statistical heterogeneity of the effect sizes.; CONCLUSIONS: The added value of VR applications over waiting-list or psychoeducation only control groups is obvious. VR applications can be used as part of the treatment of anxiety disorders, especially when conventional therapy is unavailable. Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved
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
Efficacy of gamified Applications of mental Health Promotion and Prevention: Results of a systematic Review
No full textAschentrup L, Dadaczynski K, McCall T, Steimer P, Fischer F, Wrona KJ. Wirksamkeit von gamifizierten Anwendungen der psychischen Gesundheitsförderung und Prävention: Ergebnisse eines systematischen Reviews. In: Soziale Gesundheit neu denken: Herausforderungen für Sozialmedizin und medizinische Soziologie in der digitalen Spätmoderne – Gemeinsame Jahrestagung der DGSMP und der DGMS 2022. Das Gesundheitswesen. Vol 84. Stuttgart: Thieme; 2022: 861
Zero-Field Spin Torque Oscillator Based on Magnetic Tunnel Junctions with a Tilted CoFeB Free Layer
No full textSkowronski W, Stobiecki T, Wrona J, Reiss G, van Dijken S. Zero-Field Spin Torque Oscillator Based on Magnetic Tunnel Junctions with a Tilted CoFeB Free Layer. Applied Physics Express. 2012;5(6): 63005.Microwave emission from spin torque oscillators based on CoFeB/MgO/CoFeB magnetic tunnel junctions is analyzed with respect to the thickness of the magnetically free electrode. Taking advantage of the ferromagnetic interlayer exchange coupling between the free and reference layers and the perpendicular interface anisotropy of thin CoFeB electrodes on MgO, we demonstrate that large-amplitude oscillations of the tilted CoFeB free layer can be generated in zero applied magnetic field. (C) 2012 The Japan Society of Applied Physic
Home peripheral nerve catheters: the first 24 months of experience at a children’s hospital
No full textAndrew Gable,1,2 Candice Burrier,1,3 Jenna Stevens,1 Sharon Wrona,1 Kevin Klingele,4,5 Tarun Bhalla,1,3 David P Martin,1,3 Giorgio Veneziano,1,3 Joseph D Tobias1,3 1Department of Anesthesiology and Pain Medicine, Nationwide Children’s Hospital, Columbus, 2Heritage College of Osteopathic Medicine, Ohio University, Athens, 3Department of Anesthesiology and Pain Medicine, The Ohio State University, 4Department of Orthopedics, Nationwide Children’s Hospital, 5Department of Orthopedics, The Ohio State University, Columbus, OH, USA Context: Home peripheral nerve catheters (PNCs) have become common practice for adult patients after major orthopedic surgery. However, use in pediatric patients is a recent application.Objectives: The purpose of this study was to review the demographics and outcomes of pediatric patients receiving a PNC at our institution.Methods: This retrospective study included patients from October 2012 through October 2014 undergoing orthopedic procedures with a PNC placed for postoperative pain management.Results: A total of 118 patients aged 3.2–25.3 years were identified. The types of catheters included femoral (80.5%), interscalene (11.9%), sciatic (5.9%), and supraclavicular (1.7%). The majority of patients were discharged to home on the day of surgery (77.1%). In the postanesthetic care unit, the average pain score was 2.5, the incidence of nausea/emesis was 5.9%, and the need for opioid administration was 50.8%. There were no major complications. Minor complications included a 7.6% rate of early catheter removal with 5.9% of those due to catheter leakage and an unsecure dressing. There was one case of metallic taste in the mouth without other symptoms of local anesthetic toxicity that resolved without further complication.Conclusion: The implementation of a home PNC program in pediatric patients at our institution has been highly successful with a high rate of ambulatory catheters, low pain scores, low rates of nausea and vomiting, and no serious complications. Minor complications included leaking of the catheter and early discontinuation of the catheter. Keywords: peripheral nerve catheter, pediatric, regional anesthesi
Health of musically gifted young people in the context of coping with stage fright
No full textThe article discusses the health issues of musically gifted young people, who, due to the nature of music education, are exposed to experiencing stage fright, understood as a specific type of stress that does not necessarily has negative impact on health. The purpose of the research was to answer the questions concerning the level of health of secondary school music students and its determinants. The Functional Health Model developed by Helena Wrona-Polańska (2003) was adopted as a theoretical basis, according to which health is a function of creative coping with stress. Health and stage fright were defined operationally. In the research the standardized interview and questionnaire techniques developed by the author were used. The research group comprised 132 students of secondary music schools. The results have shown that a quarter of students rate their health as bad, whereas more than half experience high level of stage fright and its symptoms, and cope with stage fright by focusing on emotions. Stage fright and emotional style have turned out to be negative predictors of health. The results point to the need of implementing interventions aimed at promoting the health of young people engaged in music education
Prasa krakowska na warsztatach historyków : próba syntetycznego spojrzenia
No full textArticle includes a systematic review of the achievements of research on the history of the press in Krako
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