We investigate languages for querying and transforming unstructured data by which we mean languages than can be used without knowledge of the structure (schema) of the database. There are two reasons for wanting to do this. First, some data models have emerged in which the schema is either completely absent or only provides weak constraints on the data. Second, it is sometimes convenient, for t...

background: among all cancers, malignancies of gastrointestinal tract are the most common cancer among iranian population. dietary behavior is thought to be the most important risk factor in gastric cancer. fear and perceived severity are two important constructs of the protection motivation theory (pmt). despite the evidence of the impact of these two constructs in modifying dietary habits aga...

This paper introduces and describes a five aspect framework for the engineering of complex systems. The framework serves three purposes: (1) characterizing and elaborating engineering methods to ensure coverage of essential aspects; (2) providing an organizing taxonomy for research initiatives related to developing methods and practices; and (3) providing a focusing framework to develop managem...

Introduction: The existence of standard tools is one of the basic needs of scientists of healthy behavior for predicting health-related behaviors. The aim of the present study was to design a psychometrically sound instrument to measure the protection motivation theory constructs regarding self-medication for elderly Iranians. Methods: The study was conducted in spring 2016. The sample con...