Efficient estimation of parameters is a major objective in analyzing longitudinal data. We propose two generalized empirical likelihood based methods that take into consideration within-subject correlations. A nonparametric version of the Wilks theorem for the limiting distributions of the empirical likelihood ratios is derived. It is shown that one of the proposed methods is locally efficient ...

Subject island effects are variable and unstable. Previous accounts, relying on well-defined structural properties of subjects, fail to capture this variability. We argue that subjects are islands only when they satisfy the Subject Criterion, which implies that at the interface they are interpreted outside the predicative nucleus of the clause, in a categorical structure (à la Ladusaw 1994); on...

Subject island effects are variable and unstable. Previous accounts, relying on well-defined structural properties of subjects, fail to capture this variability. We argue that subjects are islands only when they satisfy the Subject Criterion, which implies that at the interface they are interpreted outside the predicative nucleus of the clause, in a categorical structure (à la Ladusaw 1994); on...

In this paper the correlation between class attendance and performance has been analyzed to identify whether attendance is a factor which affects the students’ performance in a computers related subject. The data for analysis was taken from two classes of undergraduate students of Computer Application Course at a college in New Delhi India. The correlation was found using Pearson correlation co...

A first preliminary remark will relate to the relevance of European Union education policies for both educationand teacher education studies. Education and training have become priorities of policies of the Council of the European Union within the framework of more comprehensive economic and social policies (cf. Lisbon process). Strategic objectives for the development of education and training...

Subject classification schemes and vocabularies for subject indexing, i.e. subject vocabularies, have a crucial role in the development of subject gateways. From our experiences on a few subject gateway projects which are designed for regional and domainspecific communities, we learned that the subject gateways require a subject vocabulary which is reasonably small and tailored in accordance wi...

Recently, the European Federation of Clinical Chemistry Laboratory Medicine (1), within the frame of its Science Committee, has created a working group (WG) on biological variation. In its website (2), this WG describes its structure and its purpose (“Terms for reference”). Some members of this WG and other authors published a very interesting systematic review of data on biological variation f...