objective: to determine the pattern of stability changes as a reflection of early healing around single-stage roughened-surface implants in humans utilizing resonance frequency analysis (rfa). materials and methods: hundred twenty-five patients who demanded dental implants were treated with two different implant (nobel biocare replacetm and strummantm iti) systems. bone type was classified into...

ground penetrating radar (gpr) is one of high resolution geophysical methods for locating missed objects, buried equipments. gpr is a nondestructive testing method that is useful in various kinds of explorations such as mapping the archaeological sites. the safety of the archaeological sites is one of the most concerns of the archaeologists. one of the best gpr applications is in archaeology as...

seismic coherency is a measure of lateral changes in acoustic impedance that are caused by variations in structure, stratigraphy, lithology, porosity, and fluid content. seismic coherency is a geometrical attribute that establishes temporal and lateral relationships with other attributes. seismic coherency can be defined by coherency attributes. when coherency attributes are applied to seismic ...

background: investigators frequently encounter continuous outcomes with plenty of values clumped at zero called semi-continuous outcomes. the gensini score, one of the most widely used scoring systems for expressing coronary angiographic results, is of this type. the aim of this study was to apply two statistical approaches based on the categorization and original scale of the gensini score to ...

We read the debate on antidepressants and suicide with interest, especially the issue concerning the importance of controlling for possible confounding variables in ecological studies and the associated difficulties in drawing conclusions from such ecological observations. One potentially important confounder, which has been overlooked, is the size of the family of origin. Birth cohort studies ...

• Ensure that a sample is random • Use observations of a sample to judge the features of the population • Plan the study: this includes the appropriate analysis • Establish a hypothesis: usually that there is no difference • Estimate the probability that the observed data could have occurred by chance • Consider the probabilities of more extreme data as well • If you find ‘no difference’ this i...

We read the debate on antidepressants and suicide with interest, especially the issue concerning the importance of controlling for possible confounding variables in ecological studies and the associated difficulties in drawing conclusions from such ecological observations. One potentially important confounder, which has been overlooked, is the size of the family of origin. Birth cohort studies ...

Data interpretation is an essential element of mature software project management and empirical software engineering. As far as project management is concerned, data interpretation can support the assessment of the current project status and the achievement of project goals and requirements. As far as empirical studies are concerned, data interpretation can help to draw conclusions from collect...

We read the debate on antidepressants and suicide with interest, especially the issue concerning the importance of controlling for possible confounding variables in ecological studies and the associated difficulties in drawing conclusions from such ecological observations. One potentially important confounder, which has been overlooked, is the size of the family of origin. Birth cohort studies ...