Primaire biliaire cirrhose met sclerodermie en hypothyreoidie

Contains fulltext : 4297.pdf (publisher's version ) (Open Access

Post-traumatic cutaneous meningioma.

Cutaneous meningiomas are extremely rare tumours and their diagnosis is difficult. We describe the case of a patient who developed a paranasal swelling after head trauma and associated fractures in the same region years before. Histopathological examination of an incisional biopsy revealed the diagnosis of cutaneous meningioma. After one and a half years' follow up, surgical excision was performed because of progressive growth of the tumour and associated aesthetic problems. Extracranial meningiomas can develop probably secondary to trapping of meningeal tissue after trauma. If there is no intracranial connection surgical removal can be considered

Modelling asset correlations: A nonparametric approach

This article proposes a time-varying nonparametric estimator and a time-varying semiparametric estimator of the correlation matrix. We discuss representation, estimation based on kernel smoothing and inference. An extensive Monte Carlo simulation study is performed to compare the semiparametric and nonparametric models with the DCC speci fication. Our bivariate simulation results show that the semiparametric and nonparametric models are best in DGPs with gradual changes or structural breaks in correlations. However, in DGPs with rapid changes or constancy in correlations the DCC delivers the best outcome. Moreover, in multivariate simulations the semiparametric and nonparametric models fare the best in DGPs with substantial time-variability in correlations, while when allowing for little variability in the correlations the DCC is the dominant speci fication. The methodologies are illustrated by estimating the correlations for two interesting portfolios. The rst portfolio consists of the equity sectors SPDRs and the S&P 500 composite, while the second one contains major currencies that are actively traded in the foreign exchange market. Portfolio evaluation results show that the nonparametric estimator generally dominates its competitors, with a statistically significant lower portfolio variance

Implementing creative dance activities for primary school children to improve health and wellbeing: a qualitative study in the North East England

\ua9 Royal Society for Public Health 2024.Aims: Evidence suggests that group arts activities with children build resilience and positive mental wellbeing. However, insufficient attention has been paid to how such activities can be implemented in practice across different contexts, particularly in socio-economically disadvantaged areas. Therefore, we explored the implementation of a dance-based intervention in two primary schools situated in an area of high economic deprivation in North East England. Methods: Our study explored Year 1 (age 5–6) and Year 5 (age 9–10) children, their parents, teachers and dance artists’ views of a creative dance intervention (South Tees Arts project; STAR) in two schools in North East England, using interviews and focus groups, combined with innovative data capture activities (i.e. movement activities, graffiti walls, songs and Vox Pops). Results: Children felt that STAR contributed positively to their emotional wellbeing and physical health. Teachers noticed improved confidence, engagement, literacy, and social and motor skills and less disruptive behaviour in class. Benefits continued beyond school, with children exercising at home to practice their dance moves. Several implementation barriers were identified ranging from limited time, large classes, dealing with challenging behaviours, the impact of COVID-19, stigma and anxiety. In response to these challenges, several solutions were developed during project delivery, such as artists and children working in pairs and role modelling by teachers and dance artists. Conclusions: We found three underlying mechanisms for successful implementation: (1) constant communication between teachers, dance artists and parents was essential to managing challenging behaviours, building personal relationships with children, and helping parents to get involved and support their children at home. (2) Linking dance activities to the school curriculum (using narratives from existing reading schemes) helped to support skill gaps. (3) A strong ethos of partnership between school, dance and arts providers and researchers ensured the adaptability and flexibility of projects

Shigellosis and AIDS : Report of a case and brief review of the literature

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Defining the business ecosystem of peer-to-peer electricity trading

Purpose: The purpose of this paper is to introduce the value proposition and structure of the business ecosystem of peer-to-peer electricity trading through a future oriented approach. Design/Methodology/Approach: This study follows a qualitative approach. It conducts conceptual analyses by utilizing previously validated tools in similar contexts. First, different views on business ecosystems are introduced and an argument is made to justify an ecosystem perspective for peerto-peer electricity trading. Second, the value proposition of the peer-to-peer electricity trading ecosystem is identified by utilising a meta-model which consists of four elements: end customer value, business value (shareholder value), collaborative value (business value to the supply chain) and societal value (value creation in the supply chain and control of negative externalities). Third, based on the structural view of business ecosystems, the study identifies actors, positions, links, and activities in the traditional electricity trading. And last, (structural) changes of the ecosystem for peer-to-peer electricity trading are discussed. Findings: This paper elaborates the business ecosystem of peer-to-peer electricity trading and highlights the structural changes it imposes to the status quo. Practical and social implications: The ecosystem construct adds insights into actors’ ecosystem strategy regarding their business models for peer-to-peer electricity trading as well as into the governance of this type of trading. It provides a comprehensive view for policy makers. It enhances the research designs in detailed aspects of the peer-to-peer electricity trading by providing a wide lense. Originality/Value: The identified business ecosystem of peer-to-peer electricity trading provides a comprehensive, multi-stakeholder perspective to incorporate complexities and include externalities