Photographic Definition. I

I. Introduction. Definition

A case definition and photographic screening tool for the facial phenotype of fetal alcohol syndrome.

OBJECTIVES The purpose of this study was to demonstrate that a quantitative, multivariate case definition of the fetal alcohol syndrome (FAS) facial phenotype could be derived from photographs of individuals with FAS and to demonstrate how this case definition and photographic approach could be used to develop efficient, accurate, and precise screening tools, diagnostic aids, and possibly surve...

Photographic response to x-ray irradiation. I: Estimation of the photographic error statistic and development of analytic density-intensity equations.

Formulations for specular optical density as a function of incident x-ray intensity are shown to be inadequate, theoretically and compared with available data. Approximations assuming low intensities, grain densities, or energies yield significant error in typical emulsions. Unjustifiable simplifications limit analysis and consequent results. The avoidance of assumptions leads to models for rou...

Definition and Uses of the i* Metamodel

The clear definition of a metamodel can be considered helpful for any conceptual modeling approach, and the i* framework is not an exception. Agreeing on a metamodel for i* can be considered even more convenient than ever when we are aware of the different dialects and variations that the community proposed, and keep proposing, over the seminal i* definition. In this paper we present the revise...

A Metrics Definition Framework for i*

Measuring is a central task in the any engineering discipline, and modelling is not an exception. The need for measuring properties over i* models arises in different contexts. We have analysed this need over i* models of organizations, projects, systems and architectures. As a result, we have proposed a framework which includes: (a) a metamodel of i* that defines the elements that build the mo...