Contribui？？o teórico-conceitual para a pesquisa avaliativa no contexto de vigilancia da saúde

initially this article revises some of the conceptual and operational elements on evaluative research by gathering knowledge and action fields on public health practices. such concepts are taken according to a wider conception of quality. then, the article intends to arrange a theoretical model design considering the proposition for implementation of health surveillance actionsan image-objective definition of organization and integration of health polices and practices based on hierarchic and local logic also take place. finally, becomings and challenges around the theory in the health evaluation field turn to be the aim of our reflection in order to enable the production of knowledge and approaches to construct logic models which reveals the complexity of interventionist objects as well as its transforming nature of social practices.