The purpose of this study is to investigate the impact of using Trigonometric Graphs, a teacher created web-based simulation, and asynchronous online discussion on students’ understanding of and performance in sketching transformation of trigonometric curves. The participants of the study were 29 Grade 9 students from a Singapore school. The students worked in groups of three or four in experim...

Whether as team members brainstorming, or cultures experimenting with new technologies, problem solvers communicate and share ideas. This paper examines how the structure of communication networks among actors can affect system-level performance. We present an agent-based model of information sharing, where the less successful emulate the more successful. Results suggest that where agents are d...

In a recent study, a new concept, namely elucidative fusion systems, was proposed and demonstrated using case based reasoning as the fusion tool. Elucidative fusion systems are designed to offer not only optimally fused decisions but also elucidate the relative contributions made by the different data sources (sensors) to the fused decisions. In the earlier study, the concept was illustrated us...

BACKGROUND Western diets are associated with obesity, vascular diseases, and metabolic syndrome and might increase dementia risk in later life. If these associations are causal, those low- and middle-income countries experiencing major changes in diet might also see an increasing prevalence of dementia. OBJECTIVE To investigate the relationship of dietary supply and the prevalence of dementia...

BACKGROUND Maternal mortality (MM) is an avoidable death and there is national, international and political commitment to reduce it. The objective of this study is to examine the relation of MM to socioeconomic factors and its inequality in Iran's provinces at an ecologic level. METHODS The overall MM from each province was considered for 3 years from 2004 to 2006. The five independent variab...

The cancer mortality ratios (CMRs) in Poland in high and low level radiation areas were analyzed based on information from national cancer registry. Presented ecological study concerned six regions, extending from the largest administration areas (a group of voivodeships), to the smallest regions (single counties). The data show that the relative risk of cancer deaths is lower in the higher rad...

S e presentan dos métodos que se pueden utilizar como alternativas al GWAS para localizar QTLs en ganado. El primero se centra en el análisis de secuencias de homocigosis (runs of homozygosity, ROH) en grupos de animales (p.ej. casos y controles); el segundo es un método de remuestreo basado en la frecuencia de inclusión de los SNP en modelos predictivos. Las ROH se aplicaron a la identificació...

Purnose The incorporation of polymers into artificial tears both increases the thickness of the precorneal tear film and decreases the rate of drainaae of the for8nulations. On the basis of these effects, we hypothesized that a time study of the artificial increase in tear volume induced by such formulations could be a useful method of assessing their precorneal residence time. Methods New Zeal...