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301.
Marginalised models, also known as marginally specified models, have recently become a popular tool for analysis of discrete longitudinal data. Despite being a novel statistical methodology, these models introduce complex constraint equations and model fitting algorithms. On the other hand, there is a lack of publicly available software to fit these models. In this paper, we propose a three-level marginalised model for analysis of multivariate longitudinal binary outcome. The implicit function theorem is introduced to approximately solve the marginal constraint equations explicitly. probit link enables direct solutions to the convolution equations. Parameters are estimated by maximum likelihood via a Fisher–Scoring algorithm. A simulation study is conducted to examine the finite-sample properties of the estimator. We illustrate the model with an application to the data set from the Iowa Youth and Families Project. The R package pnmtrem is prepared to fit the model. 相似文献
302.
303.
We consider the estimation of the parameters in two partitioned linear models, denoted by 𝒜 = {y, X 1 β 1 + X 2 β 2, V 𝒜} and ? = {y, X 1 β 1 + X 2 β 2, V ?}, which we call full models. Correspondingly, we define submodels 𝒜1 = {y, X 1 β 1, V 𝒜} and ?1 = {y, X 1 β 1, V ?}. Using the so-called Pandora's Box approach introduced by Rao (1971, we give new necessary and sufficient conditions for the equality between the best linear unbiased estimators (BLUEs) of X 1 β 1 under 𝒜1 and ?1 as well as under 𝒜 and ?. In our considerations we will utilise the Frisch–Waugh–Lovell theorem which provides a connection between the full model 𝒜 and the reduced model 𝒜 r = {M 2 y, M 2 X 1 β 1, M 2 V 𝒜 M 2} with M 2 being an appropriate orthogonal projector. Moreover, we consider the equality of the BLUEs under the full models assuming that they are equal under the submodels. 相似文献
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305.
Lineke B.E. van Hal Agnes Meershoek Angelique de Rijk Frans Nijhuis 《Disability & Society》2012,27(1):81-93
In western welfare states, labour participation is increasingly considered a vital aspect of taking part in society. Vocational rehabilitation programmes are intended to support people in the process of returning to work. These programmes pay much attention to the skills that clients need to develop in order to return to work. We argue, however, that vocational rehabilitation is more than the acquirement of skills, and that further attention should be paid to clients’ ‘identity work’ processes. Based on 45 life-stories, we present an analysis of the identity work expressed by people with a work disability in the Netherlands. We describe ‘separative’, ‘integrative’, and ‘pending’ processes of identity work. The presented typology can help vocational rehabilitation professionals become more sensitive to clients’ processes, and supports more inclusive vocational rehabilitation. 相似文献
306.
In this case study, focus is on how persons with AD use their remaining linguistic and cognitive resources, together with non-verbal aspects of the storytelling event, as resources in communicating and negotiating their identities in everyday encounters. The results of the analysis, focusing on the telling of the stories, indicate that other aspects than the temporal and referential organization of the narratives has become important resources for the teller in establishing and negotiating identity. The telling of temporally discontinuous narratives does not appear to affect or disrupt the teller's experience of some sort of a continuous sense of self and identity but are probably more a problem to persons without this kind of diagnosis. Being afflicted by AD most likely leads persons to try to invent and use alternative communicative recourses in order to sustain factors like their senses of self and identities. For researchers this makes it important to try to base their analysis on the actual organization of the talk and to focus on the functions of various responses and utterances in the interaction. 相似文献
307.
Sevgül Dönmez Ruşen Öztürk Banu Karaoz Weller Simge Zeyneloğlu 《Journal of American college health : J of ACH》2019,67(5):410-417
Objective: The researchers aimed to evaluate the knowledge and perceptions of first-year female nursing students about human papillomavirus (HPV), cervical cancer (CC), and HPV vaccination. Participants: The sample included 690 female nursing students from sampled universities between April and June 2015. Methods: Students were surveyed by using a pretested HPV and CC awareness questionnaire. Results: More than half of the students (65.1%) answered questions incorrectly with a mean HPV knowledge score of 6.085?±?3.38. The majority of students (82.6%) did not hear HPV vaccine. Only, 2.8% of the students had been vaccinated. A statistically significant relationship was found between HPV knowledge score and hearing about HPV vaccine (U?=?28280.500, p?=?.015), and believing HPV vaccine protectiveness (χ2?=?14.153, p?=?.001). Conclusions: This study highlights the lack of knowledge and low level of awareness about HPV, CC, and HPV vaccination among first-year nursing college students. 相似文献
308.
İzzettin Kök 《International Journal of Listening》2018,32(3):163-179
This study explores the relationship between students’ listening comprehension strategy use and their listening comprehension proficiency with regard to the group, level, and degree of strategy use. Forty-four university students of an English Language teaching department comprised the study population. Three listening comprehension tests were given to participants with two-week intervals to measure their listening comprehension proficiency. To measure the students’ listening comprehension strategy use, a listening comprehension strategy inventory developed by the researcher was used. Data analysis showed a positive correlation between the level of listening comprehension strategy use and listening comprehension proficiency. When different groups of listening comprehension strategy use of learners were taken into account, there was a statistically significant difference between the students’ listening comprehension achievements in favor of the group with high metacognitive strategy use. 相似文献
309.
In 2007, Petrova and Tarrow coined the term transactional activism, arguing that, despite weak individual-level political participation, civil societies in Central and Eastern Europe were surprisingly strong due to their capacity to establish transactional links. Yet the research which followed, relying mostly on quantitative data, has not uncovered much evidence of how transactional activism works. To make advances here, we take a more qualitative approach and focus on transactional ties among NGOs, developing a more fine-grained conceptualization. Specifically, we distinguish associative ties of loosely defined cooperation and interlocking ties based on the division of labour. We utilize this new conceptualization through a successful anti-corruption initiative known as ‘Reconstruction of the State’. The initiative presented itself largely in transactional terms (plurality of participating actors) and was extremely successful in the run-up to the Parliamentary elections in 2013 in the Czech Republic, inspiring similar initiatives abroad. We use social network analysis and qualitative interviews to test our concept of interlocking transactional ties. In contrast to our expectations, we find limited division of labour in the initiative, with just one organization, in the main, shouldering most of the important tasks. We use our findings to question the previously claimed importance of transactional activism in Central and Eastern Europe. Specifically, we call for more robust evidence describing how cooperation among organizations empowers civil society. 相似文献
310.