A distance measure for automatic document classification by sequential analysis

This research has investigated the feasibility of using a distance measure, called the Bayesian distance, for automatic sequential document classification. It has been shown that by observing the variation of this distance measure as keywords are extracted sequentially from a document, the occurrence of noisy keywords may be detected. This property of the distance measure has been utilized to design a sequential classification algorithm which works in two phases. In the first phase keywords extracted from a document are partitioned into two groups—the good keyword group and the noisy keyword group. In the second phase these two groups of keywords are analyzed separately to assign primary and secondary classes to a document. The algorithm has been applied to several data bases of documents and very encouraging results have been obtained.     

Graduate degrees by external studies: the Nova University programmes in Florida

This article examines the graduate degrees by external study programmes offered by Nova University, Florida. These programmes have generated much criticism from traditional institutions in the United States of America, but the success of the programmes rests on the quality of academic staff recruited, programme evaluation techniques and student demand for the awards.     

Promoting self-control of learning

The process of learning with understanding was investigated by case study of three male students learning genetics at a tertiary college. Five conclusions regarding the process arise from the study. These conclusions are: (1) Learning outcome is determined by decisions made by the learner. These decisions are influenced by learner perceptions and interpretations. (2) Inadequate learning is due to ineffective decision-making. This ineffective decision-making is associated with specific, recurring learning deficiencies. The main types of deficiency, deficient processing tendencies and misconceptions, cause inadequate performance and preclude learning with understanding. A total of seven tendencies was observed. Each learner applied tendencies idiosyncratically. Tendencies also generated particular misconceptions which further inhibited learning. (3) It takes energy to learn with understanding, or to unlearn a misconception. (4) Learners often are unaware of their deficiencies. This lack of awareness generates inappropriate attitudes. (5) Increased learner awareness of the nature and process of learning changes attitudes and procedures. The major implication of this study relates to promoting self-control of learning. It is proposed that improved learning will result from increasing learner awareness of the nature and process of learning, and by training learners in procedures for enhancing self-evaluation and decision-making.     

Scaffolding Voluntary Summer Reading for Children in Grades 3 to 5: An Experimental Study

The effects of a voluntary summer reading intervention with teacher and parent scaffolding were investigated in an experimental study. A total of 24 teachers and 400 children in Grades 3, 4, and 5 were randomly assigned to one of four experimental conditions: control, books only, books with oral reading scaffolding, and books with oral reading and comprehension scaffolding. Books were matched to children's reading levels and interests. Children were pre- and posttested on measures of oral reading fluency (DIBELS) and silent reading ability (Iowa Test of Basic Skills [ITBS]). Results showed that children in the books with oral reading and comprehension scaffolding condition scored significantly higher on the ITBS posttest than children in the control condition. In addition, children in the two scaffolding conditions combined scored higher on the ITBS posttest than children in the control and books only conditions combined. Practical implications for summer voluntary reading interventions are discussed.     

An SEM Approach for the Evaluation of Intervention Effects Using Pre-Post-Post Designs

A directly applicable latent variable modeling procedure for classical item analysis is outlined. The method allows one to point and interval estimate item difficulty, item correlations, and item-total correlations for composites consisting of categorical items. The approach is readily employed in empirical research and as a by-product permits examining the latent structure of tentative versions of multiple-component measuring instruments. The discussed procedure is straightforwardly utilized with the increasingly popular latent variable modeling software Mplus, and is illustrated on a numerical example.     

The development of a model of culturally responsive science and mathematics teaching

This qualitative theoretical study was conducted in response to the current need for an inclusive and comprehensive model to guide the preparation and assessment of teacher candidates for culturally responsive teaching. The process of developing a model of culturally responsive teaching involved three steps: a comprehensive review of the literature; a synthesis of the literature into thematic categories to capture the dispositions and behaviors of culturally responsive teaching; and the piloting of these thematic categories with teacher candidates to validate the usefulness of the categories and to generate specific exemplars of behavior to represent each category. The model of culturally responsive teaching contains five thematic categories: (1) content integration, (2) facilitating knowledge construction, (3) prejudice reduction, (4) social justice, and (5) academic development. The current model is a promising tool for comprehensively defining culturally responsive teaching in the context of teacher education as well as to guide curriculum and assessment changes aimed to increase candidates’ culturally responsive knowledge and skills in science and mathematics teaching.