While several studies have explored parents' perceptions of their children's participation in research, very few studies have described the children's own perceptions of their participation in research. The aim of this study was to describe children's perceptions of their participation in a comprehensive longitudinal clinical study. Semi-structured qualitative interviews were conducted with 17 children aged seven participating in the Copenhagen Prospective Study on Asthma in Childhood. The interviews were audiotaped, transcribed and analysed using the template analysis method. The children rated (...) their experiences with venepunctures on a Wong-Baker faces scale. The regular visits to the hospital and comprehensive clinical tests did not seem to have affected the children negatively. In particular, the children would happily engage themselves in medical tests mimicking play (moving, walking, running or playing with a computer). A majority of the children, however, disapproved of the venepunctures and some even refused to have it done. The results of this study indicate that participation in even comprehensive paediatric research can be a positive experience to the participants, with the most popular tests being those that required active participation from the children. (shrink)

The purpose of the article is to elaborate on the scholarly debate on affect. We consider the site of affect to be the activities of embodied, socioculturally and spatially situated participants: “Affective activity is a form of social practice” (Wetherell, 2015, p. 147). By studying affect as a social phenomenon, we treat affect as a social ontology. Social practices are constituted through participation in social interaction, which makes it possible to study affect empirically. Moreover, we suggest that to consider affect (...) a social ontology connects affect to agency. We regard affect as a participants’ phenomenon where emotions and knowledge are not separated, i.e. as a social epistemology. To capture the complexity of affective activity, the study of situated participation requires video data. We collected data at a centre for persons with acquired brain injury (ABI), which highlights research ethics. The International Classification of Functioning, Disability and Health (ICF) framework defines participation as involvement in life situations. ICF focuses on two broader perspectives: the body and the individual in society. We turn ICF’s abstract societal perspective on participation to meaningful local accomplishments in lived social practices. Our focus is, in line with a critical social ontology in disability studies, on how-ability, the communicative abilities of the residents (Hughes, 2007). To get closer to life situations as they unfold, we analyse participation in its details as embodied actions during activities in the material environment of the centre. To conclude, we demonstrate a resident’s competent participation in an occupational therapy session through a fine-grained analysis of affective activity. Interaction, practices and phenomena are complex theoretical and practical issues. In the analysis of the encounters as complex multimodal and -sensorial situations, we use an extended version of Ethnomethodological Conversation Analysis (EMCA) that incorporates the body and material environment with the interconnectedness of interactional episodes. To do this, we enlarge the scope of analysis from the complexity of local occasions of affective activity to connections between consecutive affective entanglements. In the indicated work we draw on theoretical (lamination) and methodological (nexus analysis) suggestions in order to best pursue the sociocultural nature of situated interactions. (shrink)

In this paper we introduce a new technique of proving undecidability results. This technique is based on the notion of a Thue tree. We also give examples of applications of this method to term rewriting, Horn implication problem and database dependencies.

A previously unexplored method, combining logical and mathematical elements, is shown to yield substantial numerical improvements in the area of Diophantine approximations. Kreisel illustrated the method abstractly by noting that effective bounds on the number of elements are ensured if Herbrand terms from ineffective proofs of Σ 2 -finiteness theorems satisfy certain simple growth conditions. Here several efficient growth conditions for the same purpose are presented that are actually satisfied in practice, in particular, by the proofs of Roth's theorem due (...) to Roth himself and to Esnault and Viehweg. The analysis of the former yields an exponential bound of order exp(70ε -2 d 2 ) in place of exp(285ε -2 d 2 ) given by Davenport and Roth in 1955, where α is (real) algebraic of degree d ≥ 2 and $|\alpha - pq^{-1}| . (Thus the new bound is less than the fourth root of the old one.) The new bounds extracted from the other proof are polynomial of low degree (in ε -1 and log d). Corollaries: Apart from a new bound for the number of solutions of the corresponding Diophantine equations and inequalities (among them Thue's inequality), $\log \log q_\nu , where q ν are the denominators of the convergents to the continued fraction of α. (shrink)

Cách mạng 4.0 đã và đang mang đến sự thay đổi lớn trong đời sống của người dân Việt Nam. Sự tiện dụng của Grab, khả năng cập nhật 24/24 của Facebook, hay sự đa dạng về nội dung của YouTube thúc đẩy xã hội tiến tới thời đại mới của khởi nghiệp điện toán (Vuong, 2019). Ở đó, mỗi cá nhân đều có cơ hội để khởi nghiệp thông qua sự kết nối đến khắp mọi nơi trên thế giới (...) của Internet và sức mạnh tính toán nằm gọn trong long bàn tay. Hiện nay, sản xuất video trên YouTube, cho thuê nhà qua AirBnb, hay chạy xe cho Grab tạo ra công việc có khả năng tạo lợi nhuận cho người tham gia thị trường, dù là người lao động, hay tổ chức cung ứng dịch vụ. (shrink)

Mijn wetenschappelijke bijdrage sluit aan bij het stuk van Jan Willem Klop in deze zelfde afscheidsbundel, dat ik van Jan Willem onder embargo te lezen heb gekregen. Je zult je herinneren dat Jan Willem in de CWI lezing ter gelegenheid van zijn eredoctoraat kort refereerde aan de Thue Morse reeks. Noem deze reeks M . Jan Willem gaf de versie die start met 1. Noem het resultaat van omwisselen van nullen en enen in de Thue Morse reeks M (...) . De reeks M is wat je krijgt als je het Thue Morse proces start met 0. (shrink)