Like other software artefacts, metamodels evolve over time. We propose a transformational approach to assist metamodel evolution by stepwise adaptation. In the first part of the paper, we adopt ideas from grammar engineering to define several semanticsand instancepreservation properties in terms of metamodel relations. This part is not restricted to any metamodel formalism. In the second part, ...

purpose-the research aims at evaluating the standardization/adaptation of international marketing strategy in iran multinational companies (mncs) based a model in which the impact of external environmental variables on the marketing mix internal variables (i.e. product, promotion, price and place) is considered, while in the previous researches no attempt was done to examine the interdependency...

Background: Regarding nurses' significant role in improving quality of marital life in mastectomy patients and their families, implication of the adaptation model can help nurses reaching this goal. Aim: This study aimed to determine Effect of an educational-supportive program based on Roy This quasi-experimental study was performed on 69 mastectomy patients receiving chemotherapy in 2013 in cl...

Introduction: Campus life tends to make social and academic demands on college students. To cope with these demands, students are required to use their neurocognitive skills of problem- solving and planning intentional actions that target towards adaptation to college. This paper presents an illuminating perspective that would inform understanding of a new approach to cognitive neuroscience. Th...

the main purpose of this research was to study the variables and factors that affect adaptation of university to external environment and to develop a model for assessment of tehran public universities adaptation to external environment. a mixed method research approach involving a three-round delphi study was used to record responses to the closed-questions and open-ended-questions. other data...

This note provides a simple result showing, under suitable technical assumptions, that if a system Σ adapts to a class of external signals U , then Σ must necessarily contain a subsystem which is capable of generating all the signals in U . It is not assumed that regulation is robust, nor is there a prior requirement for the system to be partitioned into separate plant and controller components.